[RFC PATCH net-next 0/5] net: improve support for SCTP checksums

[RFC PATCH net-next 0/5] net: improve support for SCTP checksums

[Davide Caratti]

When NETIF_F_CSUM_MASK bits are all 0 on netdev features, validate_xmit_skb
uses skb_checksum_help to compute 16-bit, 2-complement checksum on non-GSO
skbs having ip_summed equal to CHECKSUM_PARTIAL.
This results in a systematic corruption of SCTP packets, since they need
to be checksummed with crc32c. Moreover, this is done regardless the value
of NETIF_F_SCTP_CRC, so any chance to offload crc32c computation on the 
NIC is lost. Finally, even when at least one bit in NETIF_F_CSUM_MASK is
set on netdev features, validate_xmit_skb skips checksum computation - but
then most NIC drivers can only call skb_checksum_help if their HW can't
offload the checksum computation. Depending on the driver code, this
results in wrong handling of SCTP, leading to:

- packet being dropped
- packet being transmitted with identically-zero checksum
- packet being transmitted with 2-complement checksum instead of crc32c

This series tries to address the above issue, by providing:
- the possibility to compute crc32c on skbs in Linux net core [patch 1]
- skb_sctp_csum_help, a function sharing common code with the original
  skb_checksum_help, that performs SW checksumming for skbs using crc32c
  [patch 2 and patch 3]
- skb_csum_hwoffload_help, called by validate xmit skb to perform SW
  checksumming using the correct algorithm based on the value of IP
  protocol number and netdev features bitmask [patch 4]
- an update to Linux documentation [patch 5]

Davide Caratti (5):
  skbuff: add stub to help computing crc32c on SCTP packets
  net: split skb_checksum_help
  net: introduce skb_sctp_csum_help
  net: more accurate checksumming in validate_xmit_skb
  Documentation: add description of skb_sctp_csum_help

 Documentation/networking/checksum-offloads.txt |   9 +-
 include/linux/netdevice.h                      |   1 +
 include/linux/skbuff.h                         |   5 +-
 net/core/dev.c                                 | 132 +++++++++++++++++++++----
 net/core/skbuff.c                              |  20 ++++
 net/sctp/offload.c                             |   7 ++
 6 files changed, 151 insertions(+), 23 deletions(-)

-- 
2.7.4

[RFC PATCH net-next 0/5] net: improve support for SCTP checksums

[Davide Caratti]

When NETIF_F_CSUM_MASK bits are all 0 on netdev features, validate_xmit_skb
uses skb_checksum_help to compute 16-bit, 2-complement checksum on non-GSO
skbs having ip_summed equal to CHECKSUM_PARTIAL.
This results in a systematic corruption of SCTP packets, since they need
to be checksummed with crc32c. Moreover, this is done regardless the value
of NETIF_F_SCTP_CRC, so any chance to offload crc32c computation on the 
NIC is lost. Finally, even when at least one bit in NETIF_F_CSUM_MASK is
set on netdev features, validate_xmit_skb skips checksum computation - but
then most NIC drivers can only call skb_checksum_help if their HW can't
offload the checksum computation. Depending on the driver code, this
results in wrong handling of SCTP, leading to:

- packet being dropped
- packet being transmitted with identically-zero checksum
- packet being transmitted with 2-complement checksum instead of crc32c

This series tries to address the above issue, by providing:
- the possibility to compute crc32c on skbs in Linux net core [patch 1]
- skb_sctp_csum_help, a function sharing common code with the original
  skb_checksum_help, that performs SW checksumming for skbs using crc32c
  [patch 2 and patch 3]
- skb_csum_hwoffload_help, called by validate xmit skb to perform SW
  checksumming using the correct algorithm based on the value of IP
  protocol number and netdev features bitmask [patch 4]
- an update to Linux documentation [patch 5]

Davide Caratti (5):
  skbuff: add stub to help computing crc32c on SCTP packets
  net: split skb_checksum_help
  net: introduce skb_sctp_csum_help
  net: more accurate checksumming in validate_xmit_skb
  Documentation: add description of skb_sctp_csum_help

 Documentation/networking/checksum-offloads.txt |   9 +-
 include/linux/netdevice.h                      |   1 +
 include/linux/skbuff.h                         |   5 +-
 net/core/dev.c                                 | 132 +++++++++++++++++++++----
 net/core/skbuff.c                              |  20 ++++
 net/sctp/offload.c                             |   7 ++
 6 files changed, 151 insertions(+), 23 deletions(-)

-- 
2.7.4

[RFC PATCH net-next 1/5] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
it can't be used in net core. Like it has been done previously with other
symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
to allow computation of SCTP checksum in net core after sctp.ko (and thus
libcrc32c) has been loaded.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h |  2 ++
 net/core/skbuff.c      | 20 ++++++++++++++++++++
 net/sctp/offload.c     |  7 +++++++
 3 files changed, 29 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 6f63b7e..44fc804 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3119,6 +3119,8 @@ struct skb_checksum_ops {
 	__wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
 };
 
+extern const struct skb_checksum_ops *sctp_csum_stub __read_mostly;
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index f8dbe4a..60e9963 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2235,6 +2235,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
 }
 EXPORT_SYMBOL(skb_copy_and_csum_bits);
 
+static __wsum warn_sctp_csum_update(const void *buff, int len, __wsum sum)
+{
+	net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+	return 0;
+}
+
+static __wsum warn_sctp_csum_combine(__wsum csum, __wsum csum2,
+					 int offset, int len)
+{
+	net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+	return 0;
+}
+
+const struct skb_checksum_ops *sctp_csum_stub __read_mostly =
+	&(struct skb_checksum_ops) {
+	.update  = warn_sctp_csum_update,
+	.combine = warn_sctp_csum_combine,
+};
+EXPORT_SYMBOL(sctp_csum_stub);
+
  /**
  *	skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
  *	@from: source buffer
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 7e869d0..1c9c548 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
 	},
 };
 
+static const struct skb_checksum_ops *sctp_csum_ops __read_mostly =
+	&(struct skb_checksum_ops) {
+	.update  = sctp_csum_update,
+	.combine = sctp_csum_combine,
+};
+
 int __init sctp_offload_init(void)
 {
 	int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
 	if (ret)
 		goto ipv4;
 
+	sctp_csum_stub = sctp_csum_ops;
 	return ret;
 
 ipv4:
-- 
2.7.4

[RFC PATCH net-next 1/5] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
it can't be used in net core. Like it has been done previously with other
symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
to allow computation of SCTP checksum in net core after sctp.ko (and thus
libcrc32c) has been loaded.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h |  2 ++
 net/core/skbuff.c      | 20 ++++++++++++++++++++
 net/sctp/offload.c     |  7 +++++++
 3 files changed, 29 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 6f63b7e..44fc804 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3119,6 +3119,8 @@ struct skb_checksum_ops {
 	__wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
 };
 
+extern const struct skb_checksum_ops *sctp_csum_stub __read_mostly;
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index f8dbe4a..60e9963 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2235,6 +2235,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
 }
 EXPORT_SYMBOL(skb_copy_and_csum_bits);
 
+static __wsum warn_sctp_csum_update(const void *buff, int len, __wsum sum)
+{
+	net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+	return 0;
+}
+
+static __wsum warn_sctp_csum_combine(__wsum csum, __wsum csum2,
+					 int offset, int len)
+{
+	net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+	return 0;
+}
+
+const struct skb_checksum_ops *sctp_csum_stub __read_mostly +	&(struct skb_checksum_ops) {
+	.update  = warn_sctp_csum_update,
+	.combine = warn_sctp_csum_combine,
+};
+EXPORT_SYMBOL(sctp_csum_stub);
+
  /**
  *	skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
  *	@from: source buffer
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 7e869d0..1c9c548 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
 	},
 };
 
+static const struct skb_checksum_ops *sctp_csum_ops __read_mostly +	&(struct skb_checksum_ops) {
+	.update  = sctp_csum_update,
+	.combine = sctp_csum_combine,
+};
+
 int __init sctp_offload_init(void)
 {
 	int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
 	if (ret)
 		goto ipv4;
 
+	sctp_csum_stub = sctp_csum_ops;
 	return ret;
 
 ipv4:
-- 
2.7.4

[RFC PATCH net-next 2/5] net: split skb_checksum_help

[Davide Caratti]

skb_checksum_help is designed to compute the Internet Checksum only. To
avoid duplicating code when other checksumming algorithms (e.g. crc32c)
are used, separate common part from RFC1624-specific part.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/core/dev.c | 51 +++++++++++++++++++++++++++++++++++----------------
 1 file changed, 35 insertions(+), 16 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index ad5959e..6742160 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2532,13 +2532,36 @@ static void skb_warn_bad_offload(const struct sk_buff *skb)
 	     skb_shinfo(skb)->gso_type, skb->ip_summed);
 }
 
-/*
- * Invalidate hardware checksum when packet is to be mangled, and
+/* compute 16-bit RFC1624 checksum and store it at skb->data + offset */
+static int skb_rfc1624_csum(struct sk_buff *skb, int offset)
+{
+	__wsum csum;
+	int ret = 0;
+
+	csum = skb_checksum(skb, offset, skb->len - offset, 0);
+
+	offset += skb->csum_offset;
+	BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__sum16))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__sum16 *)(skb->data + offset) = csum_fold(csum) ?: CSUM_MANGLED_0;
+out:
+	return ret;
+}
+
+/* Invalidate hardware checksum when packet is to be mangled, and
  * complete checksum manually on outgoing path.
+ *    @skb - buffer that needs checksum
+ *    @csum_algo(skb, offset) - function used to compute the checksum
  */
-int skb_checksum_help(struct sk_buff *skb)
+static int __skb_checksum_help(struct sk_buff *skb,
+			       int (*csum_algo)(struct sk_buff *, int))
 {
-	__wsum csum;
 	int ret = 0, offset;
 
 	if (skb->ip_summed == CHECKSUM_COMPLETE)
@@ -2560,24 +2583,20 @@ int skb_checksum_help(struct sk_buff *skb)
 
 	offset = skb_checksum_start_offset(skb);
 	BUG_ON(offset >= skb_headlen(skb));
-	csum = skb_checksum(skb, offset, skb->len - offset, 0);
-
-	offset += skb->csum_offset;
-	BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
-
-	if (skb_cloned(skb) &&
-	    !skb_clone_writable(skb, offset + sizeof(__sum16))) {
-		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
-		if (ret)
-			goto out;
-	}
 
-	*(__sum16 *)(skb->data + offset) = csum_fold(csum) ?: CSUM_MANGLED_0;
+	ret = csum_algo(skb, offset);
+	if (ret)
+		goto out;
 out_set_summed:
 	skb->ip_summed = CHECKSUM_NONE;
 out:
 	return ret;
 }
+
+int skb_checksum_help(struct sk_buff *skb)
+{
+	return __skb_checksum_help(skb, skb_rfc1624_csum);
+}
 EXPORT_SYMBOL(skb_checksum_help);
 
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
-- 
2.7.4

[RFC PATCH net-next 2/5] net: split skb_checksum_help

[Davide Caratti]

skb_checksum_help is designed to compute the Internet Checksum only. To
avoid duplicating code when other checksumming algorithms (e.g. crc32c)
are used, separate common part from RFC1624-specific part.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/core/dev.c | 51 +++++++++++++++++++++++++++++++++++----------------
 1 file changed, 35 insertions(+), 16 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index ad5959e..6742160 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2532,13 +2532,36 @@ static void skb_warn_bad_offload(const struct sk_buff *skb)
 	     skb_shinfo(skb)->gso_type, skb->ip_summed);
 }
 
-/*
- * Invalidate hardware checksum when packet is to be mangled, and
+/* compute 16-bit RFC1624 checksum and store it at skb->data + offset */
+static int skb_rfc1624_csum(struct sk_buff *skb, int offset)
+{
+	__wsum csum;
+	int ret = 0;
+
+	csum = skb_checksum(skb, offset, skb->len - offset, 0);
+
+	offset += skb->csum_offset;
+	BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__sum16))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__sum16 *)(skb->data + offset) = csum_fold(csum) ?: CSUM_MANGLED_0;
+out:
+	return ret;
+}
+
+/* Invalidate hardware checksum when packet is to be mangled, and
  * complete checksum manually on outgoing path.
+ *    @skb - buffer that needs checksum
+ *    @csum_algo(skb, offset) - function used to compute the checksum
  */
-int skb_checksum_help(struct sk_buff *skb)
+static int __skb_checksum_help(struct sk_buff *skb,
+			       int (*csum_algo)(struct sk_buff *, int))
 {
-	__wsum csum;
 	int ret = 0, offset;
 
 	if (skb->ip_summed = CHECKSUM_COMPLETE)
@@ -2560,24 +2583,20 @@ int skb_checksum_help(struct sk_buff *skb)
 
 	offset = skb_checksum_start_offset(skb);
 	BUG_ON(offset >= skb_headlen(skb));
-	csum = skb_checksum(skb, offset, skb->len - offset, 0);
-
-	offset += skb->csum_offset;
-	BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
-
-	if (skb_cloned(skb) &&
-	    !skb_clone_writable(skb, offset + sizeof(__sum16))) {
-		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
-		if (ret)
-			goto out;
-	}
 
-	*(__sum16 *)(skb->data + offset) = csum_fold(csum) ?: CSUM_MANGLED_0;
+	ret = csum_algo(skb, offset);
+	if (ret)
+		goto out;
 out_set_summed:
 	skb->ip_summed = CHECKSUM_NONE;
 out:
 	return ret;
 }
+
+int skb_checksum_help(struct sk_buff *skb)
+{
+	return __skb_checksum_help(skb, skb_rfc1624_csum);
+}
 EXPORT_SYMBOL(skb_checksum_help);
 
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
-- 
2.7.4

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Tom Herbert]

On Mon, Jan 23, 2017 at 8:52 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> skb_checksum_help is designed to compute the Internet Checksum only. To
> avoid duplicating code when other checksumming algorithms (e.g. crc32c)
> are used, separate common part from RFC1624-specific part.
>
> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  net/core/dev.c | 51 +++++++++++++++++++++++++++++++++++----------------
>  1 file changed, 35 insertions(+), 16 deletions(-)
>
> diff --git a/net/core/dev.c b/net/core/dev.c
> index ad5959e..6742160 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2532,13 +2532,36 @@ static void skb_warn_bad_offload(const struct sk_buff *skb)
>              skb_shinfo(skb)->gso_type, skb->ip_summed);
>  }
>
> -/*
> - * Invalidate hardware checksum when packet is to be mangled, and
> +/* compute 16-bit RFC1624 checksum and store it at skb->data + offset */
> +static int skb_rfc1624_csum(struct sk_buff *skb, int offset)
> +{
> +       __wsum csum;
> +       int ret = 0;
> +
> +       csum = skb_checksum(skb, offset, skb->len - offset, 0);
> +
> +       offset += skb->csum_offset;
> +       BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
> +
> +       if (skb_cloned(skb) &&
> +           !skb_clone_writable(skb, offset + sizeof(__sum16))) {
> +               ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
> +               if (ret)
> +                       goto out;
> +       }
> +       *(__sum16 *)(skb->data + offset) = csum_fold(csum) ?: CSUM_MANGLED_0;
> +out:
> +       return ret;
> +}
> +
> +/* Invalidate hardware checksum when packet is to be mangled, and
>   * complete checksum manually on outgoing path.
> + *    @skb - buffer that needs checksum
> + *    @csum_algo(skb, offset) - function used to compute the checksum
>   */
> -int skb_checksum_help(struct sk_buff *skb)
> +static int __skb_checksum_help(struct sk_buff *skb,
> +                              int (*csum_algo)(struct sk_buff *, int))
>  {
> -       __wsum csum;
>         int ret = 0, offset;
>
>         if (skb->ip_summed == CHECKSUM_COMPLETE)

skb_checksum_help is specific to the Internet checksum. For instance,
CHECKSUM_COMPLETE can _only_ refer to Internet checksum calculation
nothing else will work. Checksums and CRCs are very different things
with very different processing. They are not interchangeable, have
very different properties, and hence it is a mistake to try to shoe
horn things so that they use a common infrastructure.

It might make sense to create some CRC helper functions, but last time
I checked there are so few users of CRC in skbufs I'm not even sure
that would make sense.

Tom

> @@ -2560,24 +2583,20 @@ int skb_checksum_help(struct sk_buff *skb)
>
>         offset = skb_checksum_start_offset(skb);
>         BUG_ON(offset >= skb_headlen(skb));
> -       csum = skb_checksum(skb, offset, skb->len - offset, 0);
> -
> -       offset += skb->csum_offset;
> -       BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
> -
> -       if (skb_cloned(skb) &&
> -           !skb_clone_writable(skb, offset + sizeof(__sum16))) {
> -               ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
> -               if (ret)
> -                       goto out;
> -       }
>
> -       *(__sum16 *)(skb->data + offset) = csum_fold(csum) ?: CSUM_MANGLED_0;
> +       ret = csum_algo(skb, offset);
> +       if (ret)
> +               goto out;
>  out_set_summed:
>         skb->ip_summed = CHECKSUM_NONE;
>  out:
>         return ret;
>  }
> +
> +int skb_checksum_help(struct sk_buff *skb)
> +{
> +       return __skb_checksum_help(skb, skb_rfc1624_csum);
> +}
>  EXPORT_SYMBOL(skb_checksum_help);
>
>  __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
> --
> 2.7.4
>

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Tom Herbert]

On Mon, Jan 23, 2017 at 8:52 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> skb_checksum_help is designed to compute the Internet Checksum only. To
> avoid duplicating code when other checksumming algorithms (e.g. crc32c)
> are used, separate common part from RFC1624-specific part.
>
> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  net/core/dev.c | 51 +++++++++++++++++++++++++++++++++++----------------
>  1 file changed, 35 insertions(+), 16 deletions(-)
>
> diff --git a/net/core/dev.c b/net/core/dev.c
> index ad5959e..6742160 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2532,13 +2532,36 @@ static void skb_warn_bad_offload(const struct sk_buff *skb)
>              skb_shinfo(skb)->gso_type, skb->ip_summed);
>  }
>
> -/*
> - * Invalidate hardware checksum when packet is to be mangled, and
> +/* compute 16-bit RFC1624 checksum and store it at skb->data + offset */
> +static int skb_rfc1624_csum(struct sk_buff *skb, int offset)
> +{
> +       __wsum csum;
> +       int ret = 0;
> +
> +       csum = skb_checksum(skb, offset, skb->len - offset, 0);
> +
> +       offset += skb->csum_offset;
> +       BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
> +
> +       if (skb_cloned(skb) &&
> +           !skb_clone_writable(skb, offset + sizeof(__sum16))) {
> +               ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
> +               if (ret)
> +                       goto out;
> +       }
> +       *(__sum16 *)(skb->data + offset) = csum_fold(csum) ?: CSUM_MANGLED_0;
> +out:
> +       return ret;
> +}
> +
> +/* Invalidate hardware checksum when packet is to be mangled, and
>   * complete checksum manually on outgoing path.
> + *    @skb - buffer that needs checksum
> + *    @csum_algo(skb, offset) - function used to compute the checksum
>   */
> -int skb_checksum_help(struct sk_buff *skb)
> +static int __skb_checksum_help(struct sk_buff *skb,
> +                              int (*csum_algo)(struct sk_buff *, int))
>  {
> -       __wsum csum;
>         int ret = 0, offset;
>
>         if (skb->ip_summed = CHECKSUM_COMPLETE)

skb_checksum_help is specific to the Internet checksum. For instance,
CHECKSUM_COMPLETE can _only_ refer to Internet checksum calculation
nothing else will work. Checksums and CRCs are very different things
with very different processing. They are not interchangeable, have
very different properties, and hence it is a mistake to try to shoe
horn things so that they use a common infrastructure.

It might make sense to create some CRC helper functions, but last time
I checked there are so few users of CRC in skbufs I'm not even sure
that would make sense.

Tom

> @@ -2560,24 +2583,20 @@ int skb_checksum_help(struct sk_buff *skb)
>
>         offset = skb_checksum_start_offset(skb);
>         BUG_ON(offset >= skb_headlen(skb));
> -       csum = skb_checksum(skb, offset, skb->len - offset, 0);
> -
> -       offset += skb->csum_offset;
> -       BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
> -
> -       if (skb_cloned(skb) &&
> -           !skb_clone_writable(skb, offset + sizeof(__sum16))) {
> -               ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
> -               if (ret)
> -                       goto out;
> -       }
>
> -       *(__sum16 *)(skb->data + offset) = csum_fold(csum) ?: CSUM_MANGLED_0;
> +       ret = csum_algo(skb, offset);
> +       if (ret)
> +               goto out;
>  out_set_summed:
>         skb->ip_summed = CHECKSUM_NONE;
>  out:
>         return ret;
>  }
> +
> +int skb_checksum_help(struct sk_buff *skb)
> +{
> +       return __skb_checksum_help(skb, skb_rfc1624_csum);
> +}
>  EXPORT_SYMBOL(skb_checksum_help);
>
>  __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
> --
> 2.7.4
>

RE: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[David Laight]

From: Tom Herbert
> Sent: 23 January 2017 21:00
..
> skb_checksum_help is specific to the Internet checksum. For instance,
> CHECKSUM_COMPLETE can _only_ refer to Internet checksum calculation
> nothing else will work. Checksums and CRCs are very different things
> with very different processing. They are not interchangeable, have
> very different properties, and hence it is a mistake to try to shoe
> horn things so that they use a common infrastructure.
> 
> It might make sense to create some CRC helper functions, but last time
> I checked there are so few users of CRC in skbufs I'm not even sure
> that would make sense.

I can imagine horrid things happening if someone tries to encapsulate
SCTP/IP in UDP (or worse UDP/IP in SCTP).

For UDP in UDP I suspect that CHECKSUM_COMPLETE on an inner UDP packet
allows the outer checksum be calculated by ignoring the inner packet
(since it sums to zero).
This just isn't true if SCTP is involved.
There are tricks to generate a crc of a longer packet, but they'd only
work for SCTP in SCTP.

For non-encapsulated packets it is a different matter.

	David

RE: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[David Laight]
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=

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Davide Caratti]

hello Tom and David,

thank you for the attention.

> From: Tom Herbert
> > 
> > Sent: 23 January 2017 21:00
> ..
> > 
> > skb_checksum_help is specific to the Internet checksum. For instance,
> > CHECKSUM_COMPLETE can _only_ refer to Internet checksum calculation
> > nothing else will work. Checksums and CRCs are very different things
> > with very different processing. They are not interchangeable, have
> > very different properties, and hence it is a mistake to try to shoe
> > horn things so that they use a common infrastructure.
> > 

true, we don't need to test CHECKSUM_COMPLETE on skbs carrying SCTP.
So maybe we can simply replace patches 2/5 and 3/5 with the smaller one at
the bottom of this message.

> > It might make sense to create some CRC helper functions, but last time
> > I checked there are so few users of CRC in skbufs I'm not even sure
> > that would make sense.

This is exactly the cause of issues I see with SCTP. These packets can be
wrongly checksummed using skb_checksum_help, or simply not checksummed at
all; and in both cases, the packet goes out from the NIC with wrong L4
checksum.

For example: there are scenarios, even the trivial one below, where skb
carrying SCTP packets are wrongly checksummed, because the originating
socket read NETIF_F_SCTP_CRC bit in the underlying device features.
Then, after the kernel forwards the skb, the final transmission
happens on another device where CRC offload is not available: this
typically leads to bad checksums on transmitted SCTP packets.



namespace 1 |                   namespace 2
            |
            |                      br0
            |         +------- Linux bridge -------+
            |         |                            |
            |         V                            V
vethA <-----------> vethB                        eth0
            |
            |

when a socket bound to vethA in namespace 1 generates an INIT packet,
it's not checksummed since veth devices have NETIF_F_SCTP_CRC set [1].
Then, after vethB receives the packet in namespace 2, linux bridge
forwards it to eth0, and (depending on eth0 driver code), it will be
transmitted with wrong CRC32c or simply dropped.

On Tue, 2017-01-24 at 16:35 +0000, David Laight wrote:
> 
> I can imagine horrid things happening if someone tries to encapsulate
> SCTP/IP in UDP (or worse UDP/IP in SCTP).
> 
> For UDP in UDP I suspect that CHECKSUM_COMPLETE on an inner UDP packet
> allows the outer checksum be calculated by ignoring the inner packet
> (since it sums to zero).
> This just isn't true if SCTP is involved.
> There are tricks to generate a crc of a longer packet, but they'd only
> work for SCTP in SCTP.
> 
> For non-encapsulated packets it is a different matter.

If we limit the scope to skbs having ip_summed equal to CHECKSUM_PARTIAL,
like it's done in patch 4, we only need checksumming the packet starting
from csum_start to its end, and copy the computed value to csum_offset.
The difficult thing is discriminating skbs that need CRC32c, namely SCTP,
from the rest of the traffic (that will likely be checksummed by
skb_checksum_help).

Currently, the only way to fix wrong CRCs in the scenario above is to
configure tc filter with "csum" action on eth0 egress, to compensate the
missing capability of eth0 driver to deal with SCTP packets having
ip_summed equal to CHECKSUM_PARTIAL [2].

Patch 4 in the series is an attempt to solve the issue, both for
encapsulated and non-encapsulated skbs, calling skb_csum_hwoffload_help()
inside validate_xmit_skb. In order to look for unchecksummed SCTP packets,
I took inspiration from a Linux-4.4 commit (6ae23ad36253 "net: Add driver
helper functions ...) to implement skb_csum_hwoffload_help, then I called
it in validate_xmit_skb() to fix situations that can't be recovered by the
NIC driver (it's the case where NETIF_F_CSUM_MASK bits are all zero).

Today most NICs can provide at least HW offload for Internet Checksum:
that's why I'm a bit doubtful if it's ok to spend extra CPU cycles in
validate_xmit_skb() to ensure correct CRC in some scenarios. 
Since this issue affects some (not all) NICs, maybe it's better to drop
patch 4, or part of it, and provide a fix for individual drivers that
don't currently handle non-checksummed SCTP packets. But to do that, we
need at least patch 1 and the small code below.

------------------- 8< --------------------------
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -200,7 +200,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an FCOE checksum, a driver that supports
  *     both IP checksum offload and FCOE CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
  *
  * E. Checksumming on output with GSO.
  *
diff --git a/net/core/dev.c b/net/core/dev.c
index ad5959e..fa9be6d 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2580,6 +2580,42 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_sctp_csum_help(struct sk_buff *skb)
+{
+	__le32 crc32c_csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		goto out;
+	if (unlikely(skb_is_gso(skb)))
+		goto out;
+	if (skb_has_shared_frag(skb)) {
+		ret = __skb_linearize(skb);
+		if (ret)
+			goto out;
+	}
+
+	offset = skb_checksum_start_offset(skb);
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+				  skb->len - offset, ~(__u32)0,
+				  sctp_csum_stub));
+
+	offset += offsetof(struct sctphdr, checksum);
+	BUG_ON(offset >= skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+EXPORT_SYMBOL(skb_sctp_csum_help);
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4
------------------- >8 --------------------------

Thank you again for paying attention to this, and I would appreciate if
you share your opinion.

Notes:

[1] see commit c80fafbbb59e ("veth: sctp: add NETIF_F_SCTP_CRC to device
features")
[2] see commit c008b33f3ef ("net/sched: act_csum: compute crc32c on SCTP
packets").  We could also turn off NETIF_F_SCTP_CRC bit from vethA, but
this would generate useless crc32c calculations if the SCTP server is not
outside the physical node (e.g. it is bound to br0), leading to a
throughput degradation.

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Davide Caratti]

hello Tom and David,

thank you for the attention.

> From: Tom Herbert
> > 
> > Sent: 23 January 2017 21:00
> ..
> > 
> > skb_checksum_help is specific to the Internet checksum. For instance,
> > CHECKSUM_COMPLETE can _only_ refer to Internet checksum calculation
> > nothing else will work. Checksums and CRCs are very different things
> > with very different processing. They are not interchangeable, have
> > very different properties, and hence it is a mistake to try to shoe
> > horn things so that they use a common infrastructure.
> > 

true, we don't need to test CHECKSUM_COMPLETE on skbs carrying SCTP.
So maybe we can simply replace patches 2/5 and 3/5 with the smaller one at
the bottom of this message.

> > It might make sense to create some CRC helper functions, but last time
> > I checked there are so few users of CRC in skbufs I'm not even sure
> > that would make sense.

This is exactly the cause of issues I see with SCTP. These packets can be
wrongly checksummed using skb_checksum_help, or simply not checksummed at
all; and in both cases, the packet goes out from the NIC with wrong L4
checksum.

For example: there are scenarios, even the trivial one below, where skb
carrying SCTP packets are wrongly checksummed, because the originating
socket read NETIF_F_SCTP_CRC bit in the underlying device features.
Then, after the kernel forwards the skb, the final transmission
happens on another device where CRC offload is not available: this
typically leads to bad checksums on transmitted SCTP packets.



namespace 1 |                   namespace 2
            |
            |                      br0
            |         +------- Linux bridge -------+
            |         |                            |
            |         V                            V
vethA <-----------> vethB                        eth0
            |
            |

when a socket bound to vethA in namespace 1 generates an INIT packet,
it's not checksummed since veth devices have NETIF_F_SCTP_CRC set [1].
Then, after vethB receives the packet in namespace 2, linux bridge
forwards it to eth0, and (depending on eth0 driver code), it will be
transmitted with wrong CRC32c or simply dropped.

On Tue, 2017-01-24 at 16:35 +0000, David Laight wrote:
> 
> I can imagine horrid things happening if someone tries to encapsulate
> SCTP/IP in UDP (or worse UDP/IP in SCTP).
> 
> For UDP in UDP I suspect that CHECKSUM_COMPLETE on an inner UDP packet
> allows the outer checksum be calculated by ignoring the inner packet
> (since it sums to zero).
> This just isn't true if SCTP is involved.
> There are tricks to generate a crc of a longer packet, but they'd only
> work for SCTP in SCTP.
> 
> For non-encapsulated packets it is a different matter.

If we limit the scope to skbs having ip_summed equal to CHECKSUM_PARTIAL,
like it's done in patch 4, we only need checksumming the packet starting
from csum_start to its end, and copy the computed value to csum_offset.
The difficult thing is discriminating skbs that need CRC32c, namely SCTP,
from the rest of the traffic (that will likely be checksummed by
skb_checksum_help).

Currently, the only way to fix wrong CRCs in the scenario above is to
configure tc filter with "csum" action on eth0 egress, to compensate the
missing capability of eth0 driver to deal with SCTP packets having
ip_summed equal to CHECKSUM_PARTIAL [2].

Patch 4 in the series is an attempt to solve the issue, both for
encapsulated and non-encapsulated skbs, calling skb_csum_hwoffload_help()
inside validate_xmit_skb. In order to look for unchecksummed SCTP packets,
I took inspiration from a Linux-4.4 commit (6ae23ad36253 "net: Add driver
helper functions ...) to implement skb_csum_hwoffload_help, then I called
it in validate_xmit_skb() to fix situations that can't be recovered by the
NIC driver (it's the case where NETIF_F_CSUM_MASK bits are all zero).

Today most NICs can provide at least HW offload for Internet Checksum:
that's why I'm a bit doubtful if it's ok to spend extra CPU cycles in
validate_xmit_skb() to ensure correct CRC in some scenarios. 
Since this issue affects some (not all) NICs, maybe it's better to drop
patch 4, or part of it, and provide a fix for individual drivers that
don't currently handle non-checksummed SCTP packets. But to do that, we
need at least patch 1 and the small code below.

------------------- 8< --------------------------
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -200,7 +200,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an FCOE checksum, a driver that supports
  *     both IP checksum offload and FCOE CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
  *
  * E. Checksumming on output with GSO.
  *
diff --git a/net/core/dev.c b/net/core/dev.c
index ad5959e..fa9be6d 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2580,6 +2580,42 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_sctp_csum_help(struct sk_buff *skb)
+{
+	__le32 crc32c_csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		goto out;
+	if (unlikely(skb_is_gso(skb)))
+		goto out;
+	if (skb_has_shared_frag(skb)) {
+		ret = __skb_linearize(skb);
+		if (ret)
+			goto out;
+	}
+
+	offset = skb_checksum_start_offset(skb);
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+				  skb->len - offset, ~(__u32)0,
+				  sctp_csum_stub));
+
+	offset += offsetof(struct sctphdr, checksum);
+	BUG_ON(offset >= skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+EXPORT_SYMBOL(skb_sctp_csum_help);
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4
------------------- >8 --------------------------

Thank you again for paying attention to this, and I would appreciate if
you share your opinion.

Notes:

[1] see commit c80fafbbb59e ("veth: sctp: add NETIF_F_SCTP_CRC to device
features")
[2] see commit c008b33f3ef ("net/sched: act_csum: compute crc32c on SCTP
packets").  We could also turn off NETIF_F_SCTP_CRC bit from vethA, but
this would generate useless crc32c calculations if the SCTP server is not
outside the physical node (e.g. it is bound to br0), leading to a
throughput degradation.

RE: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[David Laight]

From: Davide Caratti
> Sent: 02 February 2017 15:07
> > From: Tom Herbert
> > >
> > > Sent: 23 January 2017 21:00
> > ..
> > >
> > > skb_checksum_help is specific to the Internet checksum. For instance,
> > > CHECKSUM_COMPLETE can _only_ refer to Internet checksum calculation
> > > nothing else will work. Checksums and CRCs are very different things
> > > with very different processing. They are not interchangeable, have
> > > very different properties, and hence it is a mistake to try to shoe
> > > horn things so that they use a common infrastructure.
> > >
> 
> true, we don't need to test CHECKSUM_COMPLETE on skbs carrying SCTP.
> So maybe we can simply replace patches 2/5 and 3/5 with the smaller one at
> the bottom of this message.

I have to admit to not knowing exactly what the CHECKSUM_xxx flags actually mean.
I have a good idea about what the intention is though.

...
> On Tue, 2017-01-24 at 16:35 +0000, David Laight wrote:
> >
> > I can imagine horrid things happening if someone tries to encapsulate
> > SCTP/IP in UDP (or worse UDP/IP in SCTP).
> >
> > For UDP in UDP I suspect that CHECKSUM_COMPLETE on an inner UDP packet
> > allows the outer checksum be calculated by ignoring the inner packet
> > (since it sums to zero).
> > This just isn't true if SCTP is involved.
> > There are tricks to generate a crc of a longer packet, but they'd only
> > work for SCTP in SCTP.
> >
> > For non-encapsulated packets it is a different matter.
> 
> If we limit the scope to skbs having ip_summed equal to CHECKSUM_PARTIAL,
> like it's done in patch 4, we only need checksumming the packet starting
> from csum_start to its end, and copy the computed value to csum_offset.
> The difficult thing is discriminating skbs that need CRC32c, namely SCTP,
> from the rest of the traffic (that will likely be checksummed by
> skb_checksum_help).
...

I'm guessing that the SCTP code only sets CHECKSUM_PARTIAL (and doesn't
perform the checksum) if it somehow knows that the target interface
supports CRC32c checksums.

I'd put the onus on any such interface to perform the checksum (and
set CHECKSUM_COMPLETE (or is it UNNECESSARY?) before passing the 
message onto an interface that doesn't advertise CRC32 support.

You certainly don't want to have to go through all the ethernet drivers!

> 
> ------------------- 8< --------------------------
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -200,7 +200,8 @@
>  *accordingly. Note the there is no indication in the skbuff that the
>  *CHECKSUM_PARTIAL refers to an FCOE checksum, a driver that supports
>  *both IP checksum offload and FCOE CRC offload must verify which offload
> - *is configured for a packet presumably by inspecting packet headers.
> + *is configured for a packet presumably by inspecting packet headers; in
> + *case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
>  *
>  * E. Checksumming on output with GSO.
>  *
> diff --git a/net/core/dev.c b/net/core/dev.c
> index ad5959e..fa9be6d 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2580,6 +2580,42 @@ int skb_checksum_help(struct sk_buff *skb)
> }
> EXPORT_SYMBOL(skb_checksum_help);
> 
> +int skb_sctp_csum_help(struct sk_buff *skb)
> +{
> +	__le32 crc32c_csum;
> +	int ret = 0, offset;
> +
> +	if (skb->ip_summed != CHECKSUM_PARTIAL)
> +		goto out;
> +	if (unlikely(skb_is_gso(skb)))
> +		goto out;
> +	if (skb_has_shared_frag(skb)) {
> +		ret = __skb_linearize(skb);

I don't think you really want to linearize the packet.
...

	David

RE: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[David Laight]
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Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Tom Herbert]

On Thu, Feb 2, 2017 at 7:07 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> hello Tom and David,
>
> thank you for the attention.
>
>> From: Tom Herbert
>> >
>> > Sent: 23 January 2017 21:00
>> ..
>> >
>> > skb_checksum_help is specific to the Internet checksum. For instance,
>> > CHECKSUM_COMPLETE can _only_ refer to Internet checksum calculation
>> > nothing else will work. Checksums and CRCs are very different things
>> > with very different processing. They are not interchangeable, have
>> > very different properties, and hence it is a mistake to try to shoe
>> > horn things so that they use a common infrastructure.
>> >
>
> true, we don't need to test CHECKSUM_COMPLETE on skbs carrying SCTP.
> So maybe we can simply replace patches 2/5 and 3/5 with the smaller one at
> the bottom of this message.
>
>> > It might make sense to create some CRC helper functions, but last time
>> > I checked there are so few users of CRC in skbufs I'm not even sure
>> > that would make sense.
>
> This is exactly the cause of issues I see with SCTP. These packets can be
> wrongly checksummed using skb_checksum_help, or simply not checksummed at
> all; and in both cases, the packet goes out from the NIC with wrong L4
> checksum.
>
Okay, makes sense. Please consider doing the following:

- Add a bit to skbuf called something like "csum_not_inet". When
ip_summed == CHECKSUM_PARTIAL and this bit is set that means we are
dealing with something other than an Internet checksum.
- At the top of skb_checksum_help (or maybe before the point where the
inet specific checksum start begins do something like:

   if (unlikely(skb->csum_not_inet))
       return skb_checksum_help_not_inet(...);

   The rest of skb_checksum_help should remained unchanged.

- Add a description of the new bit and how skb_checksum_help can work
to the comments for CHECKSUM_PARTIAL in skbuff.h
- Add FCOE to the list of protocol that can set CHECKSUM_UNNECESSARY
for a CRC/csum
- Add a note to CHECKSUM_COMPLETE section that it can only refer to an
Internet checksum

Thanks,
Tom

> For example: there are scenarios, even the trivial one below, where skb
> carrying SCTP packets are wrongly checksummed, because the originating
> socket read NETIF_F_SCTP_CRC bit in the underlying device features.
> Then, after the kernel forwards the skb, the final transmission
> happens on another device where CRC offload is not available: this
> typically leads to bad checksums on transmitted SCTP packets.
>
>
>
> namespace 1 |                   namespace 2
>             |
>             |                      br0
>             |         +------- Linux bridge -------+
>             |         |                            |
>             |         V                            V
> vethA <-----------> vethB                        eth0
>             |
>             |
>
> when a socket bound to vethA in namespace 1 generates an INIT packet,
> it's not checksummed since veth devices have NETIF_F_SCTP_CRC set [1].
> Then, after vethB receives the packet in namespace 2, linux bridge
> forwards it to eth0, and (depending on eth0 driver code), it will be
> transmitted with wrong CRC32c or simply dropped.
>
> On Tue, 2017-01-24 at 16:35 +0000, David Laight wrote:
>>
>> I can imagine horrid things happening if someone tries to encapsulate
>> SCTP/IP in UDP (or worse UDP/IP in SCTP).
>>
>> For UDP in UDP I suspect that CHECKSUM_COMPLETE on an inner UDP packet
>> allows the outer checksum be calculated by ignoring the inner packet
>> (since it sums to zero).
>> This just isn't true if SCTP is involved.
>> There are tricks to generate a crc of a longer packet, but they'd only
>> work for SCTP in SCTP.
>>
>> For non-encapsulated packets it is a different matter.
>
> If we limit the scope to skbs having ip_summed equal to CHECKSUM_PARTIAL,
> like it's done in patch 4, we only need checksumming the packet starting
> from csum_start to its end, and copy the computed value to csum_offset.
> The difficult thing is discriminating skbs that need CRC32c, namely SCTP,
> from the rest of the traffic (that will likely be checksummed by
> skb_checksum_help).
>
> Currently, the only way to fix wrong CRCs in the scenario above is to
> configure tc filter with "csum" action on eth0 egress, to compensate the
> missing capability of eth0 driver to deal with SCTP packets having
> ip_summed equal to CHECKSUM_PARTIAL [2].
>
> Patch 4 in the series is an attempt to solve the issue, both for
> encapsulated and non-encapsulated skbs, calling skb_csum_hwoffload_help()
> inside validate_xmit_skb. In order to look for unchecksummed SCTP packets,
> I took inspiration from a Linux-4.4 commit (6ae23ad36253 "net: Add driver
> helper functions ...) to implement skb_csum_hwoffload_help, then I called
> it in validate_xmit_skb() to fix situations that can't be recovered by the
> NIC driver (it's the case where NETIF_F_CSUM_MASK bits are all zero).
>
> Today most NICs can provide at least HW offload for Internet Checksum:
> that's why I'm a bit doubtful if it's ok to spend extra CPU cycles in
> validate_xmit_skb() to ensure correct CRC in some scenarios.
> Since this issue affects some (not all) NICs, maybe it's better to drop
> patch 4, or part of it, and provide a fix for individual drivers that
> don't currently handle non-checksummed SCTP packets. But to do that, we
> need at least patch 1 and the small code below.
>
> ------------------- 8< --------------------------
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -200,7 +200,8 @@
>   *     accordingly. Note the there is no indication in the skbuff that the
>   *     CHECKSUM_PARTIAL refers to an FCOE checksum, a driver that supports
>   *     both IP checksum offload and FCOE CRC offload must verify which offload
> - *     is configured for a packet presumably by inspecting packet headers.
> + *     is configured for a packet presumably by inspecting packet headers; in
> + *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
>   *
>   * E. Checksumming on output with GSO.
>   *
> diff --git a/net/core/dev.c b/net/core/dev.c
> index ad5959e..fa9be6d 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2580,6 +2580,42 @@ int skb_checksum_help(struct sk_buff *skb)
>  }
>  EXPORT_SYMBOL(skb_checksum_help);
>
> +int skb_sctp_csum_help(struct sk_buff *skb)
> +{
> +       __le32 crc32c_csum;
> +       int ret = 0, offset;
> +
> +       if (skb->ip_summed != CHECKSUM_PARTIAL)
> +               goto out;
> +       if (unlikely(skb_is_gso(skb)))
> +               goto out;
> +       if (skb_has_shared_frag(skb)) {
> +               ret = __skb_linearize(skb);
> +               if (ret)
> +                       goto out;
> +       }
> +
> +       offset = skb_checksum_start_offset(skb);
> +       crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
> +                                 skb->len - offset, ~(__u32)0,
> +                                 sctp_csum_stub));
> +
> +       offset += offsetof(struct sctphdr, checksum);
> +       BUG_ON(offset >= skb_headlen(skb));
> +
> +       if (skb_cloned(skb) &&
> +           !skb_clone_writable(skb, offset + sizeof(__le32))) {
> +               ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
> +               if (ret)
> +                       goto out;
> +       }
> +       *(__le32 *)(skb->data + offset) = crc32c_csum;
> +       skb->ip_summed = CHECKSUM_NONE;
> +out:
> +       return ret;
> +}
> +EXPORT_SYMBOL(skb_sctp_csum_help);
> +
>  __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
>  {
>         __be16 type = skb->protocol;
> --
> 2.7.4
> ------------------- >8 --------------------------
>
> Thank you again for paying attention to this, and I would appreciate if
> you share your opinion.
>
> Notes:
>
> [1] see commit c80fafbbb59e ("veth: sctp: add NETIF_F_SCTP_CRC to device
> features")
> [2] see commit c008b33f3ef ("net/sched: act_csum: compute crc32c on SCTP
> packets").  We could also turn off NETIF_F_SCTP_CRC bit from vethA, but
> this would generate useless crc32c calculations if the SCTP server is not
> outside the physical node (e.g. it is bound to br0), leading to a
> throughput degradation.
>

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Tom Herbert]

On Thu, Feb 2, 2017 at 7:07 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> hello Tom and David,
>
> thank you for the attention.
>
>> From: Tom Herbert
>> >
>> > Sent: 23 January 2017 21:00
>> ..
>> >
>> > skb_checksum_help is specific to the Internet checksum. For instance,
>> > CHECKSUM_COMPLETE can _only_ refer to Internet checksum calculation
>> > nothing else will work. Checksums and CRCs are very different things
>> > with very different processing. They are not interchangeable, have
>> > very different properties, and hence it is a mistake to try to shoe
>> > horn things so that they use a common infrastructure.
>> >
>
> true, we don't need to test CHECKSUM_COMPLETE on skbs carrying SCTP.
> So maybe we can simply replace patches 2/5 and 3/5 with the smaller one at
> the bottom of this message.
>
>> > It might make sense to create some CRC helper functions, but last time
>> > I checked there are so few users of CRC in skbufs I'm not even sure
>> > that would make sense.
>
> This is exactly the cause of issues I see with SCTP. These packets can be
> wrongly checksummed using skb_checksum_help, or simply not checksummed at
> all; and in both cases, the packet goes out from the NIC with wrong L4
> checksum.
>
Okay, makes sense. Please consider doing the following:

- Add a bit to skbuf called something like "csum_not_inet". When
ip_summed = CHECKSUM_PARTIAL and this bit is set that means we are
dealing with something other than an Internet checksum.
- At the top of skb_checksum_help (or maybe before the point where the
inet specific checksum start begins do something like:

   if (unlikely(skb->csum_not_inet))
       return skb_checksum_help_not_inet(...);

   The rest of skb_checksum_help should remained unchanged.

- Add a description of the new bit and how skb_checksum_help can work
to the comments for CHECKSUM_PARTIAL in skbuff.h
- Add FCOE to the list of protocol that can set CHECKSUM_UNNECESSARY
for a CRC/csum
- Add a note to CHECKSUM_COMPLETE section that it can only refer to an
Internet checksum

Thanks,
Tom

> For example: there are scenarios, even the trivial one below, where skb
> carrying SCTP packets are wrongly checksummed, because the originating
> socket read NETIF_F_SCTP_CRC bit in the underlying device features.
> Then, after the kernel forwards the skb, the final transmission
> happens on another device where CRC offload is not available: this
> typically leads to bad checksums on transmitted SCTP packets.
>
>
>
> namespace 1 |                   namespace 2
>             |
>             |                      br0
>             |         +------- Linux bridge -------+
>             |         |                            |
>             |         V                            V
> vethA <-----------> vethB                        eth0
>             |
>             |
>
> when a socket bound to vethA in namespace 1 generates an INIT packet,
> it's not checksummed since veth devices have NETIF_F_SCTP_CRC set [1].
> Then, after vethB receives the packet in namespace 2, linux bridge
> forwards it to eth0, and (depending on eth0 driver code), it will be
> transmitted with wrong CRC32c or simply dropped.
>
> On Tue, 2017-01-24 at 16:35 +0000, David Laight wrote:
>>
>> I can imagine horrid things happening if someone tries to encapsulate
>> SCTP/IP in UDP (or worse UDP/IP in SCTP).
>>
>> For UDP in UDP I suspect that CHECKSUM_COMPLETE on an inner UDP packet
>> allows the outer checksum be calculated by ignoring the inner packet
>> (since it sums to zero).
>> This just isn't true if SCTP is involved.
>> There are tricks to generate a crc of a longer packet, but they'd only
>> work for SCTP in SCTP.
>>
>> For non-encapsulated packets it is a different matter.
>
> If we limit the scope to skbs having ip_summed equal to CHECKSUM_PARTIAL,
> like it's done in patch 4, we only need checksumming the packet starting
> from csum_start to its end, and copy the computed value to csum_offset.
> The difficult thing is discriminating skbs that need CRC32c, namely SCTP,
> from the rest of the traffic (that will likely be checksummed by
> skb_checksum_help).
>
> Currently, the only way to fix wrong CRCs in the scenario above is to
> configure tc filter with "csum" action on eth0 egress, to compensate the
> missing capability of eth0 driver to deal with SCTP packets having
> ip_summed equal to CHECKSUM_PARTIAL [2].
>
> Patch 4 in the series is an attempt to solve the issue, both for
> encapsulated and non-encapsulated skbs, calling skb_csum_hwoffload_help()
> inside validate_xmit_skb. In order to look for unchecksummed SCTP packets,
> I took inspiration from a Linux-4.4 commit (6ae23ad36253 "net: Add driver
> helper functions ...) to implement skb_csum_hwoffload_help, then I called
> it in validate_xmit_skb() to fix situations that can't be recovered by the
> NIC driver (it's the case where NETIF_F_CSUM_MASK bits are all zero).
>
> Today most NICs can provide at least HW offload for Internet Checksum:
> that's why I'm a bit doubtful if it's ok to spend extra CPU cycles in
> validate_xmit_skb() to ensure correct CRC in some scenarios.
> Since this issue affects some (not all) NICs, maybe it's better to drop
> patch 4, or part of it, and provide a fix for individual drivers that
> don't currently handle non-checksummed SCTP packets. But to do that, we
> need at least patch 1 and the small code below.
>
> ------------------- 8< --------------------------
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -200,7 +200,8 @@
>   *     accordingly. Note the there is no indication in the skbuff that the
>   *     CHECKSUM_PARTIAL refers to an FCOE checksum, a driver that supports
>   *     both IP checksum offload and FCOE CRC offload must verify which offload
> - *     is configured for a packet presumably by inspecting packet headers.
> + *     is configured for a packet presumably by inspecting packet headers; in
> + *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
>   *
>   * E. Checksumming on output with GSO.
>   *
> diff --git a/net/core/dev.c b/net/core/dev.c
> index ad5959e..fa9be6d 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2580,6 +2580,42 @@ int skb_checksum_help(struct sk_buff *skb)
>  }
>  EXPORT_SYMBOL(skb_checksum_help);
>
> +int skb_sctp_csum_help(struct sk_buff *skb)
> +{
> +       __le32 crc32c_csum;
> +       int ret = 0, offset;
> +
> +       if (skb->ip_summed != CHECKSUM_PARTIAL)
> +               goto out;
> +       if (unlikely(skb_is_gso(skb)))
> +               goto out;
> +       if (skb_has_shared_frag(skb)) {
> +               ret = __skb_linearize(skb);
> +               if (ret)
> +                       goto out;
> +       }
> +
> +       offset = skb_checksum_start_offset(skb);
> +       crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
> +                                 skb->len - offset, ~(__u32)0,
> +                                 sctp_csum_stub));
> +
> +       offset += offsetof(struct sctphdr, checksum);
> +       BUG_ON(offset >= skb_headlen(skb));
> +
> +       if (skb_cloned(skb) &&
> +           !skb_clone_writable(skb, offset + sizeof(__le32))) {
> +               ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
> +               if (ret)
> +                       goto out;
> +       }
> +       *(__le32 *)(skb->data + offset) = crc32c_csum;
> +       skb->ip_summed = CHECKSUM_NONE;
> +out:
> +       return ret;
> +}
> +EXPORT_SYMBOL(skb_sctp_csum_help);
> +
>  __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
>  {
>         __be16 type = skb->protocol;
> --
> 2.7.4
> ------------------- >8 --------------------------
>
> Thank you again for paying attention to this, and I would appreciate if
> you share your opinion.
>
> Notes:
>
> [1] see commit c80fafbbb59e ("veth: sctp: add NETIF_F_SCTP_CRC to device
> features")
> [2] see commit c008b33f3ef ("net/sched: act_csum: compute crc32c on SCTP
> packets").  We could also turn off NETIF_F_SCTP_CRC bit from vethA, but
> this would generate useless crc32c calculations if the SCTP server is not
> outside the physical node (e.g. it is bound to br0), leading to a
> throughput degradation.
>

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Davide Caratti]

On Mon, 2017-01-23 at 12:59 -0800, Tom Herbert wrote:
> > > > It might make sense to create some CRC helper functions, but last time
> > > > I checked there are so few users of CRC in skbufs I'm not even sure
> > > > that would make sense.

hello Tom and David,

after some (thinking + testing) time, I'm going to re-post this RFC as v2 with
some feedbacks. Thank you in advance for looking at it!

On Thu, 2017-02-02 at 10:08 -0800, Tom Herbert wrote:
> On Thu, 2017-02-02 at 16:07 +0100, Davide Caratti wrote:
> > This is exactly the cause of issues I see with SCTP. These packets can be
> > wrongly checksummed using skb_checksum_help, or simply not checksummed at
> > all; and in both cases, the packet goes out from the NIC with wrong L4
> > checksum.
> > 
> Okay, makes sense. Please consider doing the following:
> 
> - Add a bit to skbuf called something like "csum_not_inet". When
> ip_summed == CHECKSUM_PARTIAL and this bit is set that means we are
> dealing with something other than an Internet checksum.

Ok, done. Another solution would be to extend possible values of
skb->ip_summed, and define a new value suitable for identifying
not-yet-checksummed SCTP packets (something like CRC32C_PARTIAL). Since
skb->ip_summed is 2-bit wide, the overall effect on skb metadata is the
same as adding skb->csum_not_inet [1].

> - At the top of skb_checksum_help (or maybe before the point where the
> inet specific checksum start begins do something like:
> 
>    if (unlikely(skb->csum_not_inet))
>        return skb_checksum_help_not_inet(...);
> 
>    The rest of skb_checksum_help should remained unchanged.

According to documentation [2], validate_xmit_skb() is a good place where
the if() statement above can be done, to preserve the possibility of having
the CRC32c computation offloaded by the NIC hardware:

if (unlikely(skb->csum_not_inet && !(features & NETIF_F_SCTP_CRC))
	       return skb_checksum_help_not_inet(...);

On Thu, 2017-02-02 at 16:55 +0000, David Laight wrote:
> 
> I'd put the onus on any such interface to perform the checksum (and
> set CHECKSUM_COMPLETE (or is it UNNECESSARY?) before passing the 
> message onto an interface that doesn't advertise CRC32 support.
> 
> You certainly don't want to have to go through all the ethernet drivers!

Ideally, a driver not able to offload checksum computation should call
skb_checksum_help() or skb_sctp_csum_help() to resolve CHECKSUM_PARTIAL
and turn it to CHECKSUM_NONE.
But this wouldn't solve all possible setups: there can be scenarios
where the NIC is configured with NETIF_F_SCTP_CRC set and NETIF_F_CSUM_HW
cleared (it's evil, but possible). In this situation, non-GSO SCTP packets
having CHECKSUM_PARTIAL will be systematically corrupted when they are
processed by validate_xmit_skb().

On Thu, 2017-02-02 at 10:08 -0800, Tom Herbert wrote:

> 
> - Add a description of the new bit and how skb_checksum_help can work
> to the comments for CHECKSUM_PARTIAL in skbuff.h

Done.

> 
> - Add FCOE to the list of protocol that can set CHECKSUM_UNNECESSARY
> for a CRC/csum

Done.

> 
> - Add a note to CHECKSUM_COMPLETE section that it can only refer to an
> Internet checksum

Done.

/* references + notes */

[1] ... this recalls to latest comment from David Laight:
On Thu, 2017-02-02 at 16:55 +0000, David Laight wrote:
> 
> I have to admit to not knowing exactly what the CHECKSUM_xxx flags
> actually mean. I have a good idea about what the intention is though.

According to domumentation, CHECKSUM_COMPLETE and CHECKSUM_UNNECESSARY are
not used for SCTP (nor in the TX path at all); nevertheless, IPVS snat/dnat
actually set CHECKSUM_UNNECESSARY on SCTP packets after the checksum is
updated (see 97203abe6bc4 "net: ipvs: sctp: do not recalc...).

I'm not sure if setting CHECKSUM_UNNECESSARY fits my case, because this would
implicitly skip RX validation when using devices like veth or loopback.

[2] Documentation/networking/checksum_offloads.txt

regards,

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Davide Caratti]

On Mon, 2017-01-23 at 12:59 -0800, Tom Herbert wrote:
> > > > It might make sense to create some CRC helper functions, but last time
> > > > I checked there are so few users of CRC in skbufs I'm not even sure
> > > > that would make sense.

hello Tom and David,

after some (thinking + testing) time, I'm going to re-post this RFC as v2 with
some feedbacks. Thank you in advance for looking at it!

On Thu, 2017-02-02 at 10:08 -0800, Tom Herbert wrote:
> On Thu, 2017-02-02 at 16:07 +0100, Davide Caratti wrote:
> > This is exactly the cause of issues I see with SCTP. These packets can be
> > wrongly checksummed using skb_checksum_help, or simply not checksummed at
> > all; and in both cases, the packet goes out from the NIC with wrong L4
> > checksum.
> > 
> Okay, makes sense. Please consider doing the following:
> 
> - Add a bit to skbuf called something like "csum_not_inet". When
> ip_summed = CHECKSUM_PARTIAL and this bit is set that means we are
> dealing with something other than an Internet checksum.

Ok, done. Another solution would be to extend possible values of
skb->ip_summed, and define a new value suitable for identifying
not-yet-checksummed SCTP packets (something like CRC32C_PARTIAL). Since
skb->ip_summed is 2-bit wide, the overall effect on skb metadata is the
same as adding skb->csum_not_inet [1].

> - At the top of skb_checksum_help (or maybe before the point where the
> inet specific checksum start begins do something like:
> 
>    if (unlikely(skb->csum_not_inet))
>        return skb_checksum_help_not_inet(...);
> 
>    The rest of skb_checksum_help should remained unchanged.

According to documentation [2], validate_xmit_skb() is a good place where
the if() statement above can be done, to preserve the possibility of having
the CRC32c computation offloaded by the NIC hardware:

if (unlikely(skb->csum_not_inet && !(features & NETIF_F_SCTP_CRC))
	       return skb_checksum_help_not_inet(...);

On Thu, 2017-02-02 at 16:55 +0000, David Laight wrote:
> 
> I'd put the onus on any such interface to perform the checksum (and
> set CHECKSUM_COMPLETE (or is it UNNECESSARY?) before passing the 
> message onto an interface that doesn't advertise CRC32 support.
> 
> You certainly don't want to have to go through all the ethernet drivers!

Ideally, a driver not able to offload checksum computation should call
skb_checksum_help() or skb_sctp_csum_help() to resolve CHECKSUM_PARTIAL
and turn it to CHECKSUM_NONE.
But this wouldn't solve all possible setups: there can be scenarios
where the NIC is configured with NETIF_F_SCTP_CRC set and NETIF_F_CSUM_HW
cleared (it's evil, but possible). In this situation, non-GSO SCTP packets
having CHECKSUM_PARTIAL will be systematically corrupted when they are
processed by validate_xmit_skb().

On Thu, 2017-02-02 at 10:08 -0800, Tom Herbert wrote:

> 
> - Add a description of the new bit and how skb_checksum_help can work
> to the comments for CHECKSUM_PARTIAL in skbuff.h

Done.

> 
> - Add FCOE to the list of protocol that can set CHECKSUM_UNNECESSARY
> for a CRC/csum

Done.

> 
> - Add a note to CHECKSUM_COMPLETE section that it can only refer to an
> Internet checksum

Done.

/* references + notes */

[1] ... this recalls to latest comment from David Laight:
On Thu, 2017-02-02 at 16:55 +0000, David Laight wrote:
> 
> I have to admit to not knowing exactly what the CHECKSUM_xxx flags
> actually mean. I have a good idea about what the intention is though.

According to domumentation, CHECKSUM_COMPLETE and CHECKSUM_UNNECESSARY are
not used for SCTP (nor in the TX path at all); nevertheless, IPVS snat/dnat
actually set CHECKSUM_UNNECESSARY on SCTP packets after the checksum is
updated (see 97203abe6bc4 "net: ipvs: sctp: do not recalc...).

I'm not sure if setting CHECKSUM_UNNECESSARY fits my case, because this would
implicitly skip RX validation when using devices like veth or loopback.

[2] Documentation/networking/checksum_offloads.txt

regards,
--
davide

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Tom Herbert]

On Mon, Feb 27, 2017 at 5:39 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> On Mon, 2017-01-23 at 12:59 -0800, Tom Herbert wrote:
>> > > > It might make sense to create some CRC helper functions, but last time
>> > > > I checked there are so few users of CRC in skbufs I'm not even sure
>> > > > that would make sense.
>
> hello Tom and David,
>
> after some (thinking + testing) time, I'm going to re-post this RFC as v2 with
> some feedbacks. Thank you in advance for looking at it!
>
> On Thu, 2017-02-02 at 10:08 -0800, Tom Herbert wrote:
>> On Thu, 2017-02-02 at 16:07 +0100, Davide Caratti wrote:
>> > This is exactly the cause of issues I see with SCTP. These packets can be
>> > wrongly checksummed using skb_checksum_help, or simply not checksummed at
>> > all; and in both cases, the packet goes out from the NIC with wrong L4
>> > checksum.
>> >
>> Okay, makes sense. Please consider doing the following:
>>
>> - Add a bit to skbuf called something like "csum_not_inet". When
>> ip_summed == CHECKSUM_PARTIAL and this bit is set that means we are
>> dealing with something other than an Internet checksum.
>
> Ok, done. Another solution would be to extend possible values of
> skb->ip_summed, and define a new value suitable for identifying
> not-yet-checksummed SCTP packets (something like CRC32C_PARTIAL). Since
> skb->ip_summed is 2-bit wide, the overall effect on skb metadata is the
> same as adding skb->csum_not_inet [1].
>
>> - At the top of skb_checksum_help (or maybe before the point where the
>> inet specific checksum start begins do something like:
>>
>>    if (unlikely(skb->csum_not_inet))
>>        return skb_checksum_help_not_inet(...);
>>
>>    The rest of skb_checksum_help should remained unchanged.
>
> According to documentation [2], validate_xmit_skb() is a good place where
> the if() statement above can be done, to preserve the possibility of having
> the CRC32c computation offloaded by the NIC hardware:
>
> if (unlikely(skb->csum_not_inet && !(features & NETIF_F_SCTP_CRC))
>                return skb_checksum_help_not_inet(...);
>
> On Thu, 2017-02-02 at 16:55 +0000, David Laight wrote:
>>
>> I'd put the onus on any such interface to perform the checksum (and
>> set CHECKSUM_COMPLETE (or is it UNNECESSARY?) before passing the
>> message onto an interface that doesn't advertise CRC32 support.
>>
>> You certainly don't want to have to go through all the ethernet drivers!
>
> Ideally, a driver not able to offload checksum computation should call
> skb_checksum_help() or skb_sctp_csum_help() to resolve CHECKSUM_PARTIAL
> and turn it to CHECKSUM_NONE.
> But this wouldn't solve all possible setups: there can be scenarios
> where the NIC is configured with NETIF_F_SCTP_CRC set and NETIF_F_CSUM_HW
> cleared (it's evil, but possible). In this situation, non-GSO SCTP packets
> having CHECKSUM_PARTIAL will be systematically corrupted when they are
> processed by validate_xmit_skb().
>
> On Thu, 2017-02-02 at 10:08 -0800, Tom Herbert wrote:
>
>>
>> - Add a description of the new bit and how skb_checksum_help can work
>> to the comments for CHECKSUM_PARTIAL in skbuff.h
>
> Done.
>
>>
>> - Add FCOE to the list of protocol that can set CHECKSUM_UNNECESSARY
>> for a CRC/csum
>
> Done.
>
>>
>> - Add a note to CHECKSUM_COMPLETE section that it can only refer to an
>> Internet checksum
>
> Done.
>
> /* references + notes */
>
> [1] ... this recalls to latest comment from David Laight:
> On Thu, 2017-02-02 at 16:55 +0000, David Laight wrote:
>>
>> I have to admit to not knowing exactly what the CHECKSUM_xxx flags
>> actually mean. I have a good idea about what the intention is though.
>
> According to domumentation, CHECKSUM_COMPLETE and CHECKSUM_UNNECESSARY are
> not used for SCTP (nor in the TX path at all); nevertheless, IPVS snat/dnat
> actually set CHECKSUM_UNNECESSARY on SCTP packets after the checksum is
> updated (see 97203abe6bc4 "net: ipvs: sctp: do not recalc...).
>
CHECKSUM_PARTIAL is the preferred mechanism on the transmit path this
defers defers the checksum computation as long as possible.
Unfortunately, if SCTP is encapsulated in UDP we will probably need to
run the SCTP CRC on the host which will be done with your changes to
skb_checksum_help.

> I'm not sure if setting CHECKSUM_UNNECESSARY fits my case, because this would
> implicitly skip RX validation when using devices like veth or loopback.
>
CHECKSUM_UNNECESSARY can be used in the transmit path (really the
forwarding path), however this I think this must imply that the
checksum in the packet must be correct. Please see my post about
drivers that are mistakingly using CHECKSUM_UNNECESSARY with LRO since
the checksum in the packet sent into the stack is not correct.

Tom

> [2] Documentation/networking/checksum_offloads.txt
>
> regards,
> --
> davide

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Tom Herbert]

On Mon, Feb 27, 2017 at 5:39 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> On Mon, 2017-01-23 at 12:59 -0800, Tom Herbert wrote:
>> > > > It might make sense to create some CRC helper functions, but last time
>> > > > I checked there are so few users of CRC in skbufs I'm not even sure
>> > > > that would make sense.
>
> hello Tom and David,
>
> after some (thinking + testing) time, I'm going to re-post this RFC as v2 with
> some feedbacks. Thank you in advance for looking at it!
>
> On Thu, 2017-02-02 at 10:08 -0800, Tom Herbert wrote:
>> On Thu, 2017-02-02 at 16:07 +0100, Davide Caratti wrote:
>> > This is exactly the cause of issues I see with SCTP. These packets can be
>> > wrongly checksummed using skb_checksum_help, or simply not checksummed at
>> > all; and in both cases, the packet goes out from the NIC with wrong L4
>> > checksum.
>> >
>> Okay, makes sense. Please consider doing the following:
>>
>> - Add a bit to skbuf called something like "csum_not_inet". When
>> ip_summed = CHECKSUM_PARTIAL and this bit is set that means we are
>> dealing with something other than an Internet checksum.
>
> Ok, done. Another solution would be to extend possible values of
> skb->ip_summed, and define a new value suitable for identifying
> not-yet-checksummed SCTP packets (something like CRC32C_PARTIAL). Since
> skb->ip_summed is 2-bit wide, the overall effect on skb metadata is the
> same as adding skb->csum_not_inet [1].
>
>> - At the top of skb_checksum_help (or maybe before the point where the
>> inet specific checksum start begins do something like:
>>
>>    if (unlikely(skb->csum_not_inet))
>>        return skb_checksum_help_not_inet(...);
>>
>>    The rest of skb_checksum_help should remained unchanged.
>
> According to documentation [2], validate_xmit_skb() is a good place where
> the if() statement above can be done, to preserve the possibility of having
> the CRC32c computation offloaded by the NIC hardware:
>
> if (unlikely(skb->csum_not_inet && !(features & NETIF_F_SCTP_CRC))
>                return skb_checksum_help_not_inet(...);
>
> On Thu, 2017-02-02 at 16:55 +0000, David Laight wrote:
>>
>> I'd put the onus on any such interface to perform the checksum (and
>> set CHECKSUM_COMPLETE (or is it UNNECESSARY?) before passing the
>> message onto an interface that doesn't advertise CRC32 support.
>>
>> You certainly don't want to have to go through all the ethernet drivers!
>
> Ideally, a driver not able to offload checksum computation should call
> skb_checksum_help() or skb_sctp_csum_help() to resolve CHECKSUM_PARTIAL
> and turn it to CHECKSUM_NONE.
> But this wouldn't solve all possible setups: there can be scenarios
> where the NIC is configured with NETIF_F_SCTP_CRC set and NETIF_F_CSUM_HW
> cleared (it's evil, but possible). In this situation, non-GSO SCTP packets
> having CHECKSUM_PARTIAL will be systematically corrupted when they are
> processed by validate_xmit_skb().
>
> On Thu, 2017-02-02 at 10:08 -0800, Tom Herbert wrote:
>
>>
>> - Add a description of the new bit and how skb_checksum_help can work
>> to the comments for CHECKSUM_PARTIAL in skbuff.h
>
> Done.
>
>>
>> - Add FCOE to the list of protocol that can set CHECKSUM_UNNECESSARY
>> for a CRC/csum
>
> Done.
>
>>
>> - Add a note to CHECKSUM_COMPLETE section that it can only refer to an
>> Internet checksum
>
> Done.
>
> /* references + notes */
>
> [1] ... this recalls to latest comment from David Laight:
> On Thu, 2017-02-02 at 16:55 +0000, David Laight wrote:
>>
>> I have to admit to not knowing exactly what the CHECKSUM_xxx flags
>> actually mean. I have a good idea about what the intention is though.
>
> According to domumentation, CHECKSUM_COMPLETE and CHECKSUM_UNNECESSARY are
> not used for SCTP (nor in the TX path at all); nevertheless, IPVS snat/dnat
> actually set CHECKSUM_UNNECESSARY on SCTP packets after the checksum is
> updated (see 97203abe6bc4 "net: ipvs: sctp: do not recalc...).
>
CHECKSUM_PARTIAL is the preferred mechanism on the transmit path this
defers defers the checksum computation as long as possible.
Unfortunately, if SCTP is encapsulated in UDP we will probably need to
run the SCTP CRC on the host which will be done with your changes to
skb_checksum_help.

> I'm not sure if setting CHECKSUM_UNNECESSARY fits my case, because this would
> implicitly skip RX validation when using devices like veth or loopback.
>
CHECKSUM_UNNECESSARY can be used in the transmit path (really the
forwarding path), however this I think this must imply that the
checksum in the packet must be correct. Please see my post about
drivers that are mistakingly using CHECKSUM_UNNECESSARY with LRO since
the checksum in the packet sent into the stack is not correct.

Tom

> [2] Documentation/networking/checksum_offloads.txt
>
> regards,
> --
> davide

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Davide Caratti]

On Mon, 2017-02-27 at 07:11 -0800, Tom Herbert wrote:
> CHECKSUM_PARTIAL is the preferred mechanism on the transmit path this
> defers defers the checksum computation as long as possible.
> Unfortunately, if SCTP is encapsulated in UDP we will probably need to
> run the SCTP CRC on the host which will be done with your changes to
> skb_checksum_help.

right. Tunnel devices have NETIF_F_SCTP_CRC bit cleared and
NETIF_F_HW_CSUM bit set: so, in this case csum_not_inet can help
recovering non-GSO SCTP packets having ip_summed equal to
CHECKSUM_PARTIAL.

> > I'm not sure if setting CHECKSUM_UNNECESSARY fits my case, because this would
> > implicitly skip RX validation when using devices like veth or loopback.
> >
> CHECKSUM_UNNECESSARY can be used in the transmit path (really the
> forwarding path), however this I think this must imply that the
> checksum in the packet must be correct. Please see my post about
> drivers that are mistakingly using CHECKSUM_UNNECESSARY with LRO since
> the checksum in the packet sent into the stack is not correct.

Ok, now I'm more convinced to use CHECKSUM_NONE :-)

thank you for the attention!
regards

Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help

[Davide Caratti]

On Mon, 2017-02-27 at 07:11 -0800, Tom Herbert wrote:
> CHECKSUM_PARTIAL is the preferred mechanism on the transmit path this
> defers defers the checksum computation as long as possible.
> Unfortunately, if SCTP is encapsulated in UDP we will probably need to
> run the SCTP CRC on the host which will be done with your changes to
> skb_checksum_help.

right. Tunnel devices have NETIF_F_SCTP_CRC bit cleared and
NETIF_F_HW_CSUM bit set: so, in this case csum_not_inet can help
recovering non-GSO SCTP packets having ip_summed equal to
CHECKSUM_PARTIAL.

> > I'm not sure if setting CHECKSUM_UNNECESSARY fits my case, because this would
> > implicitly skip RX validation when using devices like veth or loopback.
> >
> CHECKSUM_UNNECESSARY can be used in the transmit path (really the
> forwarding path), however this I think this must imply that the
> checksum in the packet must be correct. Please see my post about
> drivers that are mistakingly using CHECKSUM_UNNECESSARY with LRO since
> the checksum in the packet sent into the stack is not correct.

Ok, now I'm more convinced to use CHECKSUM_NONE :-)

thank you for the attention!
regards
--
davide
 

[PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
it can't be used in net core. Like it has been done previously with other
symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
to allow computation of SCTP checksum in net core after sctp.ko (and thus
libcrc32c) has been loaded.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h |  2 ++
 net/core/skbuff.c      | 20 ++++++++++++++++++++
 net/sctp/offload.c     |  7 +++++++
 3 files changed, 29 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 69ccd26..cab9a32 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3125,6 +3125,8 @@ struct skb_checksum_ops {
 	__wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
 };
 
+extern const struct skb_checksum_ops *sctp_csum_stub __read_mostly;
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index f355795..64fd8fd 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2242,6 +2242,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
 }
 EXPORT_SYMBOL(skb_copy_and_csum_bits);
 
+static __wsum warn_sctp_csum_update(const void *buff, int len, __wsum sum)
+{
+	net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+	return 0;
+}
+
+static __wsum warn_sctp_csum_combine(__wsum csum, __wsum csum2,
+				     int offset, int len)
+{
+	net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+	return 0;
+}
+
+const struct skb_checksum_ops *sctp_csum_stub __read_mostly =
+	&(struct skb_checksum_ops) {
+	.update  = warn_sctp_csum_update,
+	.combine = warn_sctp_csum_combine,
+};
+EXPORT_SYMBOL(sctp_csum_stub);
+
  /**
  *	skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
  *	@from: source buffer
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 4f5a2b5..e9c3db0 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
 	},
 };
 
+static const struct skb_checksum_ops *sctp_csum_ops __read_mostly =
+	&(struct skb_checksum_ops) {
+	.update  = sctp_csum_update,
+	.combine = sctp_csum_combine,
+};
+
 int __init sctp_offload_init(void)
 {
 	int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
 	if (ret)
 		goto ipv4;
 
+	sctp_csum_stub = sctp_csum_ops;
 	return ret;
 
 ipv4:
-- 
2.7.4

[PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
it can't be used in net core. Like it has been done previously with other
symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
to allow computation of SCTP checksum in net core after sctp.ko (and thus
libcrc32c) has been loaded.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h |  2 ++
 net/core/skbuff.c      | 20 ++++++++++++++++++++
 net/sctp/offload.c     |  7 +++++++
 3 files changed, 29 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 69ccd26..cab9a32 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3125,6 +3125,8 @@ struct skb_checksum_ops {
 	__wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
 };
 
+extern const struct skb_checksum_ops *sctp_csum_stub __read_mostly;
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index f355795..64fd8fd 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2242,6 +2242,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
 }
 EXPORT_SYMBOL(skb_copy_and_csum_bits);
 
+static __wsum warn_sctp_csum_update(const void *buff, int len, __wsum sum)
+{
+	net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+	return 0;
+}
+
+static __wsum warn_sctp_csum_combine(__wsum csum, __wsum csum2,
+				     int offset, int len)
+{
+	net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+	return 0;
+}
+
+const struct skb_checksum_ops *sctp_csum_stub __read_mostly +	&(struct skb_checksum_ops) {
+	.update  = warn_sctp_csum_update,
+	.combine = warn_sctp_csum_combine,
+};
+EXPORT_SYMBOL(sctp_csum_stub);
+
  /**
  *	skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
  *	@from: source buffer
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 4f5a2b5..e9c3db0 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
 	},
 };
 
+static const struct skb_checksum_ops *sctp_csum_ops __read_mostly +	&(struct skb_checksum_ops) {
+	.update  = sctp_csum_update,
+	.combine = sctp_csum_combine,
+};
+
 int __init sctp_offload_init(void)
 {
 	int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
 	if (ret)
 		goto ipv4;
 
+	sctp_csum_stub = sctp_csum_ops;
 	return ret;
 
 ipv4:
-- 
2.7.4

[PATCH RFC net-next v2 2/4] net: introduce skb_sctp_csum_help

[Davide Caratti]

skb_sctp_csum_help is like skb_checksum_help, but it is designed for
checksumming SCTP packets using crc32c (see RFC3309), provided that
sctp.ko has been loaded before. In case sctp.ko is not loaded, invoking
skb_sctp_csum_help on a skb results in the following printout:

sk_buff: attempt to compute crc32c without sctp.ko

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/netdevice.h |  1 +
 include/linux/skbuff.h    |  3 ++-
 net/core/dev.c            | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f40f0ab..8c34735 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3918,6 +3918,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
+int skb_sctp_csum_help(struct sk_buff *skb);
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index cab9a32..0671131 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -192,7 +192,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
  *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
diff --git a/net/core/dev.c b/net/core/dev.c
index 05d19c6..b9fb843 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -140,6 +140,7 @@
 #include <linux/hrtimer.h>
 #include <linux/netfilter_ingress.h>
 #include <linux/crash_dump.h>
+#include <linux/sctp.h>
 
 #include "net-sysfs.h"
 
@@ -2578,6 +2579,45 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_sctp_csum_help(struct sk_buff *skb)
+{
+	__le32 crc32c_csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		goto out;
+
+	if (unlikely(skb_is_gso(skb)))
+		goto out;
+
+	/* Before computing a checksum, we should make sure no frag could
+	 * be modified by an external entity : checksum could be wrong.
+	 */
+	if (unlikely(skb_has_shared_frag(skb))) {
+		ret = __skb_linearize(skb);
+		if (ret)
+			goto out;
+	}
+
+	offset = skb_checksum_start_offset(skb);
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+						  skb->len - offset, ~(__u32)0,
+						  sctp_csum_stub));
+	offset += offsetof(struct sctphdr, checksum);
+	BUG_ON(offset >= skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4

[PATCH RFC net-next v2 2/4] net: introduce skb_sctp_csum_help

[Davide Caratti]

skb_sctp_csum_help is like skb_checksum_help, but it is designed for
checksumming SCTP packets using crc32c (see RFC3309), provided that
sctp.ko has been loaded before. In case sctp.ko is not loaded, invoking
skb_sctp_csum_help on a skb results in the following printout:

sk_buff: attempt to compute crc32c without sctp.ko

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/netdevice.h |  1 +
 include/linux/skbuff.h    |  3 ++-
 net/core/dev.c            | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f40f0ab..8c34735 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3918,6 +3918,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
+int skb_sctp_csum_help(struct sk_buff *skb);
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index cab9a32..0671131 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -192,7 +192,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
  *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
diff --git a/net/core/dev.c b/net/core/dev.c
index 05d19c6..b9fb843 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -140,6 +140,7 @@
 #include <linux/hrtimer.h>
 #include <linux/netfilter_ingress.h>
 #include <linux/crash_dump.h>
+#include <linux/sctp.h>
 
 #include "net-sysfs.h"
 
@@ -2578,6 +2579,45 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_sctp_csum_help(struct sk_buff *skb)
+{
+	__le32 crc32c_csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		goto out;
+
+	if (unlikely(skb_is_gso(skb)))
+		goto out;
+
+	/* Before computing a checksum, we should make sure no frag could
+	 * be modified by an external entity : checksum could be wrong.
+	 */
+	if (unlikely(skb_has_shared_frag(skb))) {
+		ret = __skb_linearize(skb);
+		if (ret)
+			goto out;
+	}
+
+	offset = skb_checksum_start_offset(skb);
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+						  skb->len - offset, ~(__u32)0,
+						  sctp_csum_stub));
+	offset += offsetof(struct sctphdr, checksum);
+	BUG_ON(offset >= skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4

[PATCH RFC net-next v2 3/4] net: more accurate checksumming in validate_xmit_skb

[Davide Caratti]

Introduce skb->csum_not_inet to identify not-yet-checksummed SCTP packets.
Use this bit in combination with netdev feature bit in validate_xmit_skb,
to discriminate whether skb needs crc32c or 2-complement Internet Checksum
(or none of the two, when the underlying device can do checksum offload).

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h                |  1 +
 net/core/dev.c                        | 14 ++++++++++++--
 net/netfilter/ipvs/ip_vs_proto_sctp.c |  1 +
 net/netfilter/nf_nat_proto_sctp.c     |  1 +
 net/sched/act_csum.c                  |  1 +
 net/sctp/output.c                     |  1 +
 6 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 0671131..236b7d9 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -759,6 +759,7 @@ struct sk_buff {
 	__u8			tc_redirected:1;
 	__u8			tc_from_ingress:1;
 #endif
+	__u8			csum_not_inet:1;
 
 #ifdef CONFIG_NET_SCHED
 	__u16			tc_index;	/* traffic control index */
diff --git a/net/core/dev.c b/net/core/dev.c
index b9fb843..fae3217 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2614,6 +2614,7 @@ int skb_sctp_csum_help(struct sk_buff *skb)
 	}
 	*(__le32 *)(skb->data + offset) = crc32c_csum;
 	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_not_inet = 0;
 out:
 	return ret;
 }
@@ -2960,6 +2961,16 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+static int skb_csum_hwoffload_help(struct sk_buff *skb,
+				   netdev_features_t features)
+{
+	if (unlikely(skb->csum_not_inet))
+		return !(features & NETIF_F_SCTP_CRC) ?
+				skb_sctp_csum_help(skb) : 0;
+
+	return !(features & NETIF_F_CSUM_MASK) ? skb_checksum_help(skb) : 0;
+}
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -2995,8 +3006,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features))
 				goto out_kfree_skb;
 		}
 	}
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index d952d67..4972a60 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -81,6 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
 			  unsigned int sctphoff)
 {
 	sctph->checksum = sctp_compute_cksum(skb, sctphoff);
+	skb->csum_not_inet = 0;
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
 }
 
diff --git a/net/netfilter/nf_nat_proto_sctp.c b/net/netfilter/nf_nat_proto_sctp.c
index 31d3586..9459b88 100644
--- a/net/netfilter/nf_nat_proto_sctp.c
+++ b/net/netfilter/nf_nat_proto_sctp.c
@@ -49,6 +49,7 @@ sctp_manip_pkt(struct sk_buff *skb,
 
 	if (skb->ip_summed != CHECKSUM_PARTIAL) {
 		hdr->checksum = sctp_compute_cksum(skb, hdroff);
+		skb->csum_not_inet = 0;
 		skb->ip_summed = CHECKSUM_NONE;
 	}
 
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index e978ccd4..85cb150 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -337,6 +337,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
 
 	sctph->checksum = sctp_compute_cksum(skb,
 					     skb_network_offset(skb) + ihl);
+	skb->csum_not_inet = 0;
 	skb->ip_summed = CHECKSUM_NONE;
 
 	return 1;
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 814eac0..0dc227b 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -528,6 +528,7 @@ static int sctp_packet_pack(struct sctp_packet *packet,
 	} else {
 chksum:
 		head->ip_summed = CHECKSUM_PARTIAL;
+		head->csum_not_inet = 1;
 		head->csum_start = skb_transport_header(head) - head->head;
 		head->csum_offset = offsetof(struct sctphdr, checksum);
 	}
-- 
2.7.4

[PATCH RFC net-next v2 3/4] net: more accurate checksumming in validate_xmit_skb

[Davide Caratti]

Introduce skb->csum_not_inet to identify not-yet-checksummed SCTP packets.
Use this bit in combination with netdev feature bit in validate_xmit_skb,
to discriminate whether skb needs crc32c or 2-complement Internet Checksum
(or none of the two, when the underlying device can do checksum offload).

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h                |  1 +
 net/core/dev.c                        | 14 ++++++++++++--
 net/netfilter/ipvs/ip_vs_proto_sctp.c |  1 +
 net/netfilter/nf_nat_proto_sctp.c     |  1 +
 net/sched/act_csum.c                  |  1 +
 net/sctp/output.c                     |  1 +
 6 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 0671131..236b7d9 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -759,6 +759,7 @@ struct sk_buff {
 	__u8			tc_redirected:1;
 	__u8			tc_from_ingress:1;
 #endif
+	__u8			csum_not_inet:1;
 
 #ifdef CONFIG_NET_SCHED
 	__u16			tc_index;	/* traffic control index */
diff --git a/net/core/dev.c b/net/core/dev.c
index b9fb843..fae3217 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2614,6 +2614,7 @@ int skb_sctp_csum_help(struct sk_buff *skb)
 	}
 	*(__le32 *)(skb->data + offset) = crc32c_csum;
 	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_not_inet = 0;
 out:
 	return ret;
 }
@@ -2960,6 +2961,16 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+static int skb_csum_hwoffload_help(struct sk_buff *skb,
+				   netdev_features_t features)
+{
+	if (unlikely(skb->csum_not_inet))
+		return !(features & NETIF_F_SCTP_CRC) ?
+				skb_sctp_csum_help(skb) : 0;
+
+	return !(features & NETIF_F_CSUM_MASK) ? skb_checksum_help(skb) : 0;
+}
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -2995,8 +3006,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features))
 				goto out_kfree_skb;
 		}
 	}
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index d952d67..4972a60 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -81,6 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
 			  unsigned int sctphoff)
 {
 	sctph->checksum = sctp_compute_cksum(skb, sctphoff);
+	skb->csum_not_inet = 0;
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
 }
 
diff --git a/net/netfilter/nf_nat_proto_sctp.c b/net/netfilter/nf_nat_proto_sctp.c
index 31d3586..9459b88 100644
--- a/net/netfilter/nf_nat_proto_sctp.c
+++ b/net/netfilter/nf_nat_proto_sctp.c
@@ -49,6 +49,7 @@ sctp_manip_pkt(struct sk_buff *skb,
 
 	if (skb->ip_summed != CHECKSUM_PARTIAL) {
 		hdr->checksum = sctp_compute_cksum(skb, hdroff);
+		skb->csum_not_inet = 0;
 		skb->ip_summed = CHECKSUM_NONE;
 	}
 
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index e978ccd4..85cb150 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -337,6 +337,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
 
 	sctph->checksum = sctp_compute_cksum(skb,
 					     skb_network_offset(skb) + ihl);
+	skb->csum_not_inet = 0;
 	skb->ip_summed = CHECKSUM_NONE;
 
 	return 1;
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 814eac0..0dc227b 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -528,6 +528,7 @@ static int sctp_packet_pack(struct sctp_packet *packet,
 	} else {
 chksum:
 		head->ip_summed = CHECKSUM_PARTIAL;
+		head->csum_not_inet = 1;
 		head->csum_start = skb_transport_header(head) - head->head;
 		head->csum_offset = offsetof(struct sctphdr, checksum);
 	}
-- 
2.7.4

Re: [PATCH RFC net-next v2 3/4] net: more accurate checksumming in validate_xmit_skb

[Tom Herbert]

On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> Introduce skb->csum_not_inet to identify not-yet-checksummed SCTP packets.
> Use this bit in combination with netdev feature bit in validate_xmit_skb,
> to discriminate whether skb needs crc32c or 2-complement Internet Checksum
> (or none of the two, when the underlying device can do checksum offload).
>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h                |  1 +
>  net/core/dev.c                        | 14 ++++++++++++--
>  net/netfilter/ipvs/ip_vs_proto_sctp.c |  1 +
>  net/netfilter/nf_nat_proto_sctp.c     |  1 +
>  net/sched/act_csum.c                  |  1 +
>  net/sctp/output.c                     |  1 +
>  6 files changed, 17 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 0671131..236b7d9 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -759,6 +759,7 @@ struct sk_buff {
>         __u8                    tc_redirected:1;
>         __u8                    tc_from_ingress:1;
>  #endif
> +       __u8                    csum_not_inet:1;
>
Unfortunately this potentially pushes the skbuf flags over 32 bits if
I count correctly. I suggest that you rename csum_bad to
csum_not_inet. Looks like csum_bad is only set by a grand total of one
driver and I don't believe that is enough to justify its existence.
It's probably a good time to remove it.

>  #ifdef CONFIG_NET_SCHED
>         __u16                   tc_index;       /* traffic control index */
> diff --git a/net/core/dev.c b/net/core/dev.c
> index b9fb843..fae3217 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2614,6 +2614,7 @@ int skb_sctp_csum_help(struct sk_buff *skb)
>         }
>         *(__le32 *)(skb->data + offset) = crc32c_csum;
>         skb->ip_summed = CHECKSUM_NONE;
> +       skb->csum_not_inet = 0;
>  out:
>         return ret;
>  }
> @@ -2960,6 +2961,16 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
>         return skb;
>  }
>
> +static int skb_csum_hwoffload_help(struct sk_buff *skb,
> +                                  netdev_features_t features)
> +{
> +       if (unlikely(skb->csum_not_inet))
> +               return !(features & NETIF_F_SCTP_CRC) ?
> +                               skb_sctp_csum_help(skb) : 0;
> +
Return value looks complex. Maybe we should just change
skb_csum_*_help to return bool, true of checksum was handled false if
not.

> +       return !(features & NETIF_F_CSUM_MASK) ? skb_checksum_help(skb) : 0;
> +}
> +
>  static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
>  {
>         netdev_features_t features;
> @@ -2995,8 +3006,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
>                         else
>                                 skb_set_transport_header(skb,
>                                                          skb_checksum_start_offset(skb));
> -                       if (!(features & NETIF_F_CSUM_MASK) &&
> -                           skb_checksum_help(skb))
> +                       if (skb_csum_hwoffload_help(skb, features))
>                                 goto out_kfree_skb;
>                 }
>         }
> diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> index d952d67..4972a60 100644
> --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
> +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> @@ -81,6 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
>                           unsigned int sctphoff)
>  {
>         sctph->checksum = sctp_compute_cksum(skb, sctphoff);
> +       skb->csum_not_inet = 0;
>         skb->ip_summed = CHECKSUM_UNNECESSARY;
>  }
>
> diff --git a/net/netfilter/nf_nat_proto_sctp.c b/net/netfilter/nf_nat_proto_sctp.c
> index 31d3586..9459b88 100644
> --- a/net/netfilter/nf_nat_proto_sctp.c
> +++ b/net/netfilter/nf_nat_proto_sctp.c
> @@ -49,6 +49,7 @@ sctp_manip_pkt(struct sk_buff *skb,
>
>         if (skb->ip_summed != CHECKSUM_PARTIAL) {
>                 hdr->checksum = sctp_compute_cksum(skb, hdroff);
> +               skb->csum_not_inet = 0;
>                 skb->ip_summed = CHECKSUM_NONE;
>         }
>
> diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
> index e978ccd4..85cb150 100644
> --- a/net/sched/act_csum.c
> +++ b/net/sched/act_csum.c
> @@ -337,6 +337,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
>
>         sctph->checksum = sctp_compute_cksum(skb,
>                                              skb_network_offset(skb) + ihl);
> +       skb->csum_not_inet = 0;
>         skb->ip_summed = CHECKSUM_NONE;
>
>         return 1;
> diff --git a/net/sctp/output.c b/net/sctp/output.c
> index 814eac0..0dc227b 100644
> --- a/net/sctp/output.c
> +++ b/net/sctp/output.c
> @@ -528,6 +528,7 @@ static int sctp_packet_pack(struct sctp_packet *packet,
>         } else {
>  chksum:
>                 head->ip_summed = CHECKSUM_PARTIAL;
> +               head->csum_not_inet = 1;
>                 head->csum_start = skb_transport_header(head) - head->head;
>                 head->csum_offset = offsetof(struct sctphdr, checksum);
>         }
> --
> 2.7.4
>

Re: [PATCH RFC net-next v2 3/4] net: more accurate checksumming in validate_xmit_skb

[Tom Herbert]

On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> Introduce skb->csum_not_inet to identify not-yet-checksummed SCTP packets.
> Use this bit in combination with netdev feature bit in validate_xmit_skb,
> to discriminate whether skb needs crc32c or 2-complement Internet Checksum
> (or none of the two, when the underlying device can do checksum offload).
>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h                |  1 +
>  net/core/dev.c                        | 14 ++++++++++++--
>  net/netfilter/ipvs/ip_vs_proto_sctp.c |  1 +
>  net/netfilter/nf_nat_proto_sctp.c     |  1 +
>  net/sched/act_csum.c                  |  1 +
>  net/sctp/output.c                     |  1 +
>  6 files changed, 17 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 0671131..236b7d9 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -759,6 +759,7 @@ struct sk_buff {
>         __u8                    tc_redirected:1;
>         __u8                    tc_from_ingress:1;
>  #endif
> +       __u8                    csum_not_inet:1;
>
Unfortunately this potentially pushes the skbuf flags over 32 bits if
I count correctly. I suggest that you rename csum_bad to
csum_not_inet. Looks like csum_bad is only set by a grand total of one
driver and I don't believe that is enough to justify its existence.
It's probably a good time to remove it.

>  #ifdef CONFIG_NET_SCHED
>         __u16                   tc_index;       /* traffic control index */
> diff --git a/net/core/dev.c b/net/core/dev.c
> index b9fb843..fae3217 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2614,6 +2614,7 @@ int skb_sctp_csum_help(struct sk_buff *skb)
>         }
>         *(__le32 *)(skb->data + offset) = crc32c_csum;
>         skb->ip_summed = CHECKSUM_NONE;
> +       skb->csum_not_inet = 0;
>  out:
>         return ret;
>  }
> @@ -2960,6 +2961,16 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
>         return skb;
>  }
>
> +static int skb_csum_hwoffload_help(struct sk_buff *skb,
> +                                  netdev_features_t features)
> +{
> +       if (unlikely(skb->csum_not_inet))
> +               return !(features & NETIF_F_SCTP_CRC) ?
> +                               skb_sctp_csum_help(skb) : 0;
> +
Return value looks complex. Maybe we should just change
skb_csum_*_help to return bool, true of checksum was handled false if
not.

> +       return !(features & NETIF_F_CSUM_MASK) ? skb_checksum_help(skb) : 0;
> +}
> +
>  static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
>  {
>         netdev_features_t features;
> @@ -2995,8 +3006,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
>                         else
>                                 skb_set_transport_header(skb,
>                                                          skb_checksum_start_offset(skb));
> -                       if (!(features & NETIF_F_CSUM_MASK) &&
> -                           skb_checksum_help(skb))
> +                       if (skb_csum_hwoffload_help(skb, features))
>                                 goto out_kfree_skb;
>                 }
>         }
> diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> index d952d67..4972a60 100644
> --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
> +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> @@ -81,6 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
>                           unsigned int sctphoff)
>  {
>         sctph->checksum = sctp_compute_cksum(skb, sctphoff);
> +       skb->csum_not_inet = 0;
>         skb->ip_summed = CHECKSUM_UNNECESSARY;
>  }
>
> diff --git a/net/netfilter/nf_nat_proto_sctp.c b/net/netfilter/nf_nat_proto_sctp.c
> index 31d3586..9459b88 100644
> --- a/net/netfilter/nf_nat_proto_sctp.c
> +++ b/net/netfilter/nf_nat_proto_sctp.c
> @@ -49,6 +49,7 @@ sctp_manip_pkt(struct sk_buff *skb,
>
>         if (skb->ip_summed != CHECKSUM_PARTIAL) {
>                 hdr->checksum = sctp_compute_cksum(skb, hdroff);
> +               skb->csum_not_inet = 0;
>                 skb->ip_summed = CHECKSUM_NONE;
>         }
>
> diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
> index e978ccd4..85cb150 100644
> --- a/net/sched/act_csum.c
> +++ b/net/sched/act_csum.c
> @@ -337,6 +337,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
>
>         sctph->checksum = sctp_compute_cksum(skb,
>                                              skb_network_offset(skb) + ihl);
> +       skb->csum_not_inet = 0;
>         skb->ip_summed = CHECKSUM_NONE;
>
>         return 1;
> diff --git a/net/sctp/output.c b/net/sctp/output.c
> index 814eac0..0dc227b 100644
> --- a/net/sctp/output.c
> +++ b/net/sctp/output.c
> @@ -528,6 +528,7 @@ static int sctp_packet_pack(struct sctp_packet *packet,
>         } else {
>  chksum:
>                 head->ip_summed = CHECKSUM_PARTIAL;
> +               head->csum_not_inet = 1;
>                 head->csum_start = skb_transport_header(head) - head->head;
>                 head->csum_offset = offsetof(struct sctphdr, checksum);
>         }
> --
> 2.7.4
>

[PATCH RFC net-next v2 4/4] Documentation: update notes on checksum offloading

[Davide Caratti]

Add description of skb_sctp_csum_help in networking/checksum-offload.txt,
and document its usage in combination with skb->csum_not_inet. While at
it, remove reference to skb_csum_off_chk* functions, since they have been
removed from Linux source tree since commit cf53b1da73bd ("Revert "net:
Add driver helper functions to determine checksum""), and add missing
explaination of CHECKSUM_UNNECESSARY for FCOE protocol.

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/networking/checksum-offloads.txt |  7 ++++---
 include/linux/skbuff.h                         | 25 ++++++++++++-------------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/Documentation/networking/checksum-offloads.txt b/Documentation/networking/checksum-offloads.txt
index 56e3686..81534e9 100644
--- a/Documentation/networking/checksum-offloads.txt
+++ b/Documentation/networking/checksum-offloads.txt
@@ -49,8 +49,8 @@ A driver declares its offload capabilities in netdev->hw_features; see
  and csum_offset given in the SKB; if it tries to deduce these itself in
  hardware (as some NICs do) the driver should check that the values in the
  SKB match those which the hardware will deduce, and if not, fall back to
- checksumming in software instead (with skb_checksum_help or one of the
- skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h).  This
+ checksumming in software instead (with skb_checksum_help or
+ skb_sctp_csum_help functions as mentioned in include/linux/skbuff.h). This
  is a pain, but that's what you get when hardware tries to be clever.
 
 The stack should, for the most part, assume that checksum offload is
@@ -60,7 +60,8 @@ The stack should, for the most part, assume that checksum offload is
  may include other offloads besides TX Checksum Offload) and, if they are
  not supported or enabled on the device (determined by netdev->features),
  performs the corresponding offload in software.  In the case of TX
- Checksum Offload, that means calling skb_checksum_help(skb).
+ Checksum Offload, that means calling skb_sctp_csum_help(skb) for SCTP
+ packets, and skb_checksum_help(skb) for other packets.
 
 
 LCO: Local Checksum Offload
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 236b7d9..12d3625 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -108,6 +108,7 @@
  *       may perform further validation in this case.
  *     GRE: only if the checksum is present in the header.
  *     SCTP: indicates the CRC in SCTP header has been validated.
+ *     FCOE: indicates the CRC in FC frame has been validated.
  *
  *   skb->csum_level indicates the number of consecutive checksums found in
  *   the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
@@ -161,14 +162,13 @@
  *
  *   NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of
  *   NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate
- *   checksum offload capability. If a	device has limited checksum capabilities
- *   (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as
- *   described above) a helper function can be called to resolve
- *   CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper
- *   function takes a spec argument that describes the protocol layer that is
- *   supported for checksum offload and can be called for each packet. If a
- *   packet does not match the specification for offload, skb_checksum_help
- *   is called to resolve the checksum.
+ *   checksum offload capability. If a device has limited checksum capabilities
+ *   (for instance it can't perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as
+ *   described above) a helper function (namely skb_csum_hwoffload_help) can
+ *   be called to resolve CHECKSUM_PARTIAL. This function uses netdev_features_t
+ *   to have the Internet Checksum computed by HW, in case any feature belonging
+ *   to NETIF_F_CSUM_MASK is set, or by software using skb_checksum_help().
+ *   See also Section D.
  *
  * CHECKSUM_NONE:
  *
@@ -189,11 +189,10 @@
  *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
  *     offloading the SCTP CRC in a packet. To perform this offload the stack
  *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
- *     accordingly. Note the there is no indication in the skbuff that the
- *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
- *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers; in
- *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
+ *     accordingly. skb->csum_not_inet is an indication in the skbuff that the
+ *     CHECKSUM_PARTIAL refers to an SCTP checksum: a driver can use it to
+ *     decide whether skb_checksum_help() or skb_sctp_csum_help() have to be
+ *     called on a sk_buff having ip_summed set to CHECKSUM_PARTIAL.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
-- 
2.7.4

[PATCH RFC net-next v2 4/4] Documentation: update notes on checksum offloading

[Davide Caratti]

Add description of skb_sctp_csum_help in networking/checksum-offload.txt,
and document its usage in combination with skb->csum_not_inet. While at
it, remove reference to skb_csum_off_chk* functions, since they have been
removed from Linux source tree since commit cf53b1da73bd ("Revert "net:
Add driver helper functions to determine checksum""), and add missing
explaination of CHECKSUM_UNNECESSARY for FCOE protocol.

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/networking/checksum-offloads.txt |  7 ++++---
 include/linux/skbuff.h                         | 25 ++++++++++++-------------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/Documentation/networking/checksum-offloads.txt b/Documentation/networking/checksum-offloads.txt
index 56e3686..81534e9 100644
--- a/Documentation/networking/checksum-offloads.txt
+++ b/Documentation/networking/checksum-offloads.txt
@@ -49,8 +49,8 @@ A driver declares its offload capabilities in netdev->hw_features; see
  and csum_offset given in the SKB; if it tries to deduce these itself in
  hardware (as some NICs do) the driver should check that the values in the
  SKB match those which the hardware will deduce, and if not, fall back to
- checksumming in software instead (with skb_checksum_help or one of the
- skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h).  This
+ checksumming in software instead (with skb_checksum_help or
+ skb_sctp_csum_help functions as mentioned in include/linux/skbuff.h). This
  is a pain, but that's what you get when hardware tries to be clever.
 
 The stack should, for the most part, assume that checksum offload is
@@ -60,7 +60,8 @@ The stack should, for the most part, assume that checksum offload is
  may include other offloads besides TX Checksum Offload) and, if they are
  not supported or enabled on the device (determined by netdev->features),
  performs the corresponding offload in software.  In the case of TX
- Checksum Offload, that means calling skb_checksum_help(skb).
+ Checksum Offload, that means calling skb_sctp_csum_help(skb) for SCTP
+ packets, and skb_checksum_help(skb) for other packets.
 
 
 LCO: Local Checksum Offload
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 236b7d9..12d3625 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -108,6 +108,7 @@
  *       may perform further validation in this case.
  *     GRE: only if the checksum is present in the header.
  *     SCTP: indicates the CRC in SCTP header has been validated.
+ *     FCOE: indicates the CRC in FC frame has been validated.
  *
  *   skb->csum_level indicates the number of consecutive checksums found in
  *   the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
@@ -161,14 +162,13 @@
  *
  *   NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of
  *   NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate
- *   checksum offload capability. If a	device has limited checksum capabilities
- *   (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as
- *   described above) a helper function can be called to resolve
- *   CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper
- *   function takes a spec argument that describes the protocol layer that is
- *   supported for checksum offload and can be called for each packet. If a
- *   packet does not match the specification for offload, skb_checksum_help
- *   is called to resolve the checksum.
+ *   checksum offload capability. If a device has limited checksum capabilities
+ *   (for instance it can't perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as
+ *   described above) a helper function (namely skb_csum_hwoffload_help) can
+ *   be called to resolve CHECKSUM_PARTIAL. This function uses netdev_features_t
+ *   to have the Internet Checksum computed by HW, in case any feature belonging
+ *   to NETIF_F_CSUM_MASK is set, or by software using skb_checksum_help().
+ *   See also Section D.
  *
  * CHECKSUM_NONE:
  *
@@ -189,11 +189,10 @@
  *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
  *     offloading the SCTP CRC in a packet. To perform this offload the stack
  *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
- *     accordingly. Note the there is no indication in the skbuff that the
- *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
- *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers; in
- *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
+ *     accordingly. skb->csum_not_inet is an indication in the skbuff that the
+ *     CHECKSUM_PARTIAL refers to an SCTP checksum: a driver can use it to
+ *     decide whether skb_checksum_help() or skb_sctp_csum_help() have to be
+ *     called on a sk_buff having ip_summed set to CHECKSUM_PARTIAL.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
-- 
2.7.4

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Alexander Duyck]

On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
> it can't be used in net core. Like it has been done previously with other
> symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
> to allow computation of SCTP checksum in net core after sctp.ko (and thus
> libcrc32c) has been loaded.

At a minimum the name really needs to change.  SCTP does not do
checksums.  It does a CRC, and a CRC is a very different thing.  The
fact that somebody decided that offloading a CRC could use the same
framework is very unfortunate, and your patch descriptions in this
whole set are calling out a CRC as checksums which it is not.

I don't want to see anything "checksum" or "csum" related in the
naming when it comes to dealing with SCTP unless we absolutely have to
have it.  So any function names or structures with sctp in the name
should call out "crc32" or "crc", please don't use checksum.

> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h |  2 ++
>  net/core/skbuff.c      | 20 ++++++++++++++++++++
>  net/sctp/offload.c     |  7 +++++++
>  3 files changed, 29 insertions(+)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 69ccd26..cab9a32 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -3125,6 +3125,8 @@ struct skb_checksum_ops {
>         __wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
>  };
>
> +extern const struct skb_checksum_ops *sctp_csum_stub __read_mostly;
> +
>  __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
>                       __wsum csum, const struct skb_checksum_ops *ops);
>  __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
> diff --git a/net/core/skbuff.c b/net/core/skbuff.c
> index f355795..64fd8fd 100644
> --- a/net/core/skbuff.c
> +++ b/net/core/skbuff.c
> @@ -2242,6 +2242,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
>  }
>  EXPORT_SYMBOL(skb_copy_and_csum_bits);
>
> +static __wsum warn_sctp_csum_update(const void *buff, int len, __wsum sum)
> +{
> +       net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
> +       return 0;
> +}
> +
> +static __wsum warn_sctp_csum_combine(__wsum csum, __wsum csum2,
> +                                    int offset, int len)
> +{
> +       net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
> +       return 0;
> +}
> +
> +const struct skb_checksum_ops *sctp_csum_stub __read_mostly =
> +       &(struct skb_checksum_ops) {
> +       .update  = warn_sctp_csum_update,
> +       .combine = warn_sctp_csum_combine,
> +};
> +EXPORT_SYMBOL(sctp_csum_stub);
> +
>   /**
>   *     skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
>   *     @from: source buffer
> diff --git a/net/sctp/offload.c b/net/sctp/offload.c
> index 4f5a2b5..e9c3db0 100644
> --- a/net/sctp/offload.c
> +++ b/net/sctp/offload.c
> @@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
>         },
>  };
>
> +static const struct skb_checksum_ops *sctp_csum_ops __read_mostly =
> +       &(struct skb_checksum_ops) {
> +       .update  = sctp_csum_update,
> +       .combine = sctp_csum_combine,
> +};
> +
>  int __init sctp_offload_init(void)
>  {
>         int ret;
> @@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
>         if (ret)
>                 goto ipv4;
>
> +       sctp_csum_stub = sctp_csum_ops;
>         return ret;
>
>  ipv4:
> --
> 2.7.4
>

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Alexander Duyck]

On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
> it can't be used in net core. Like it has been done previously with other
> symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
> to allow computation of SCTP checksum in net core after sctp.ko (and thus
> libcrc32c) has been loaded.

At a minimum the name really needs to change.  SCTP does not do
checksums.  It does a CRC, and a CRC is a very different thing.  The
fact that somebody decided that offloading a CRC could use the same
framework is very unfortunate, and your patch descriptions in this
whole set are calling out a CRC as checksums which it is not.

I don't want to see anything "checksum" or "csum" related in the
naming when it comes to dealing with SCTP unless we absolutely have to
have it.  So any function names or structures with sctp in the name
should call out "crc32" or "crc", please don't use checksum.

> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h |  2 ++
>  net/core/skbuff.c      | 20 ++++++++++++++++++++
>  net/sctp/offload.c     |  7 +++++++
>  3 files changed, 29 insertions(+)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 69ccd26..cab9a32 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -3125,6 +3125,8 @@ struct skb_checksum_ops {
>         __wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
>  };
>
> +extern const struct skb_checksum_ops *sctp_csum_stub __read_mostly;
> +
>  __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
>                       __wsum csum, const struct skb_checksum_ops *ops);
>  __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
> diff --git a/net/core/skbuff.c b/net/core/skbuff.c
> index f355795..64fd8fd 100644
> --- a/net/core/skbuff.c
> +++ b/net/core/skbuff.c
> @@ -2242,6 +2242,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
>  }
>  EXPORT_SYMBOL(skb_copy_and_csum_bits);
>
> +static __wsum warn_sctp_csum_update(const void *buff, int len, __wsum sum)
> +{
> +       net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
> +       return 0;
> +}
> +
> +static __wsum warn_sctp_csum_combine(__wsum csum, __wsum csum2,
> +                                    int offset, int len)
> +{
> +       net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
> +       return 0;
> +}
> +
> +const struct skb_checksum_ops *sctp_csum_stub __read_mostly > +       &(struct skb_checksum_ops) {
> +       .update  = warn_sctp_csum_update,
> +       .combine = warn_sctp_csum_combine,
> +};
> +EXPORT_SYMBOL(sctp_csum_stub);
> +
>   /**
>   *     skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
>   *     @from: source buffer
> diff --git a/net/sctp/offload.c b/net/sctp/offload.c
> index 4f5a2b5..e9c3db0 100644
> --- a/net/sctp/offload.c
> +++ b/net/sctp/offload.c
> @@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
>         },
>  };
>
> +static const struct skb_checksum_ops *sctp_csum_ops __read_mostly > +       &(struct skb_checksum_ops) {
> +       .update  = sctp_csum_update,
> +       .combine = sctp_csum_combine,
> +};
> +
>  int __init sctp_offload_init(void)
>  {
>         int ret;
> @@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
>         if (ret)
>                 goto ipv4;
>
> +       sctp_csum_stub = sctp_csum_ops;
>         return ret;
>
>  ipv4:
> --
> 2.7.4
>

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Tom Herbert]

On Tue, Feb 28, 2017 at 2:46 PM, Alexander Duyck
<alexander.duyck@gmail.com> wrote:
> On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
>> sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
>> it can't be used in net core. Like it has been done previously with other
>> symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
>> to allow computation of SCTP checksum in net core after sctp.ko (and thus
>> libcrc32c) has been loaded.
>
> At a minimum the name really needs to change.  SCTP does not do
> checksums.  It does a CRC, and a CRC is a very different thing.  The
> fact that somebody decided that offloading a CRC could use the same
> framework is very unfortunate, and your patch descriptions in this
> whole set are calling out a CRC as checksums which it is not.
>
> I don't want to see anything "checksum" or "csum" related in the
> naming when it comes to dealing with SCTP unless we absolutely have to
> have it.  So any function names or structures with sctp in the name
> should call out "crc32" or "crc", please don't use checksum.
>
Alexander,

I agree that internal functions to sctp should not refer to checksum,
but I think we need to take care to be consistent with any external
API (even if somebody made a mistake defining it this way :-) ). As
you know the checksum interface must be very precisely defined, there
is no leeway for ambiguity. Many places in the stack use csum and
CHECKSUM_* to refer to the API not the actual algorithm, others don't
(e.g. CHECKSUM_UNNECESSARY can apply to SCTP checksum,
CHECKSUM_COMPLETE must be an Internet checksum).

For instance, in that light skb_sctp_csum_help is appropriately named
I think because this is being called from skb_csum_help and refers to
the interface to resolve a checksum.

Tom

>> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
>> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
>> ---
>>  include/linux/skbuff.h |  2 ++
>>  net/core/skbuff.c      | 20 ++++++++++++++++++++
>>  net/sctp/offload.c     |  7 +++++++
>>  3 files changed, 29 insertions(+)
>>
>> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
>> index 69ccd26..cab9a32 100644
>> --- a/include/linux/skbuff.h
>> +++ b/include/linux/skbuff.h
>> @@ -3125,6 +3125,8 @@ struct skb_checksum_ops {
>>         __wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
>>  };
>>
>> +extern const struct skb_checksum_ops *sctp_csum_stub __read_mostly;
>> +
>>  __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
>>                       __wsum csum, const struct skb_checksum_ops *ops);
>>  __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
>> diff --git a/net/core/skbuff.c b/net/core/skbuff.c
>> index f355795..64fd8fd 100644
>> --- a/net/core/skbuff.c
>> +++ b/net/core/skbuff.c
>> @@ -2242,6 +2242,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
>>  }
>>  EXPORT_SYMBOL(skb_copy_and_csum_bits);
>>
>> +static __wsum warn_sctp_csum_update(const void *buff, int len, __wsum sum)
>> +{
>> +       net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
>> +       return 0;
>> +}
>> +
>> +static __wsum warn_sctp_csum_combine(__wsum csum, __wsum csum2,
>> +                                    int offset, int len)
>> +{
>> +       net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
>> +       return 0;
>> +}
>> +
>> +const struct skb_checksum_ops *sctp_csum_stub __read_mostly =
>> +       &(struct skb_checksum_ops) {
>> +       .update  = warn_sctp_csum_update,
>> +       .combine = warn_sctp_csum_combine,
>> +};
>> +EXPORT_SYMBOL(sctp_csum_stub);
>> +
>>   /**
>>   *     skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
>>   *     @from: source buffer
>> diff --git a/net/sctp/offload.c b/net/sctp/offload.c
>> index 4f5a2b5..e9c3db0 100644
>> --- a/net/sctp/offload.c
>> +++ b/net/sctp/offload.c
>> @@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
>>         },
>>  };
>>
>> +static const struct skb_checksum_ops *sctp_csum_ops __read_mostly =
>> +       &(struct skb_checksum_ops) {
>> +       .update  = sctp_csum_update,
>> +       .combine = sctp_csum_combine,
>> +};
>> +
>>  int __init sctp_offload_init(void)
>>  {
>>         int ret;
>> @@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
>>         if (ret)
>>                 goto ipv4;
>>
>> +       sctp_csum_stub = sctp_csum_ops;
>>         return ret;
>>
>>  ipv4:
>> --
>> 2.7.4
>>

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Tom Herbert]

On Tue, Feb 28, 2017 at 2:46 PM, Alexander Duyck
<alexander.duyck@gmail.com> wrote:
> On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
>> sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
>> it can't be used in net core. Like it has been done previously with other
>> symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
>> to allow computation of SCTP checksum in net core after sctp.ko (and thus
>> libcrc32c) has been loaded.
>
> At a minimum the name really needs to change.  SCTP does not do
> checksums.  It does a CRC, and a CRC is a very different thing.  The
> fact that somebody decided that offloading a CRC could use the same
> framework is very unfortunate, and your patch descriptions in this
> whole set are calling out a CRC as checksums which it is not.
>
> I don't want to see anything "checksum" or "csum" related in the
> naming when it comes to dealing with SCTP unless we absolutely have to
> have it.  So any function names or structures with sctp in the name
> should call out "crc32" or "crc", please don't use checksum.
>
Alexander,

I agree that internal functions to sctp should not refer to checksum,
but I think we need to take care to be consistent with any external
API (even if somebody made a mistake defining it this way :-) ). As
you know the checksum interface must be very precisely defined, there
is no leeway for ambiguity. Many places in the stack use csum and
CHECKSUM_* to refer to the API not the actual algorithm, others don't
(e.g. CHECKSUM_UNNECESSARY can apply to SCTP checksum,
CHECKSUM_COMPLETE must be an Internet checksum).

For instance, in that light skb_sctp_csum_help is appropriately named
I think because this is being called from skb_csum_help and refers to
the interface to resolve a checksum.

Tom

>> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
>> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
>> ---
>>  include/linux/skbuff.h |  2 ++
>>  net/core/skbuff.c      | 20 ++++++++++++++++++++
>>  net/sctp/offload.c     |  7 +++++++
>>  3 files changed, 29 insertions(+)
>>
>> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
>> index 69ccd26..cab9a32 100644
>> --- a/include/linux/skbuff.h
>> +++ b/include/linux/skbuff.h
>> @@ -3125,6 +3125,8 @@ struct skb_checksum_ops {
>>         __wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
>>  };
>>
>> +extern const struct skb_checksum_ops *sctp_csum_stub __read_mostly;
>> +
>>  __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
>>                       __wsum csum, const struct skb_checksum_ops *ops);
>>  __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
>> diff --git a/net/core/skbuff.c b/net/core/skbuff.c
>> index f355795..64fd8fd 100644
>> --- a/net/core/skbuff.c
>> +++ b/net/core/skbuff.c
>> @@ -2242,6 +2242,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
>>  }
>>  EXPORT_SYMBOL(skb_copy_and_csum_bits);
>>
>> +static __wsum warn_sctp_csum_update(const void *buff, int len, __wsum sum)
>> +{
>> +       net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
>> +       return 0;
>> +}
>> +
>> +static __wsum warn_sctp_csum_combine(__wsum csum, __wsum csum2,
>> +                                    int offset, int len)
>> +{
>> +       net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
>> +       return 0;
>> +}
>> +
>> +const struct skb_checksum_ops *sctp_csum_stub __read_mostly >> +       &(struct skb_checksum_ops) {
>> +       .update  = warn_sctp_csum_update,
>> +       .combine = warn_sctp_csum_combine,
>> +};
>> +EXPORT_SYMBOL(sctp_csum_stub);
>> +
>>   /**
>>   *     skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
>>   *     @from: source buffer
>> diff --git a/net/sctp/offload.c b/net/sctp/offload.c
>> index 4f5a2b5..e9c3db0 100644
>> --- a/net/sctp/offload.c
>> +++ b/net/sctp/offload.c
>> @@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
>>         },
>>  };
>>
>> +static const struct skb_checksum_ops *sctp_csum_ops __read_mostly >> +       &(struct skb_checksum_ops) {
>> +       .update  = sctp_csum_update,
>> +       .combine = sctp_csum_combine,
>> +};
>> +
>>  int __init sctp_offload_init(void)
>>  {
>>         int ret;
>> @@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
>>         if (ret)
>>                 goto ipv4;
>>
>> +       sctp_csum_stub = sctp_csum_ops;
>>         return ret;
>>
>>  ipv4:
>> --
>> 2.7.4
>>

RE: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[David Laight]

From: Alexander Duyck
> Sent: 28 February 2017 22:46
...
> I don't want to see anything "checksum" or "csum" related in the
> naming when it comes to dealing with SCTP unless we absolutely have to
> have it.  So any function names or structures with sctp in the name
> should call out "crc32" or "crc", please don't use checksum.

Then also change all the places that refer the IP 1's compliment
checksum to ipchecksum.

	David

RE: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[David Laight]

RnJvbTogQWxleGFuZGVyIER1eWNrDQo+IFNlbnQ6IDI4IEZlYnJ1YXJ5IDIwMTcgMjI6NDYNCi4u
Lg0KPiBJIGRvbid0IHdhbnQgdG8gc2VlIGFueXRoaW5nICJjaGVja3N1bSIgb3IgImNzdW0iIHJl
bGF0ZWQgaW4gdGhlDQo+IG5hbWluZyB3aGVuIGl0IGNvbWVzIHRvIGRlYWxpbmcgd2l0aCBTQ1RQ
IHVubGVzcyB3ZSBhYnNvbHV0ZWx5IGhhdmUgdG8NCj4gaGF2ZSBpdC4gIFNvIGFueSBmdW5jdGlv
biBuYW1lcyBvciBzdHJ1Y3R1cmVzIHdpdGggc2N0cCBpbiB0aGUgbmFtZQ0KPiBzaG91bGQgY2Fs
bCBvdXQgImNyYzMyIiBvciAiY3JjIiwgcGxlYXNlIGRvbid0IHVzZSBjaGVja3N1bS4NCg0KVGhl
biBhbHNvIGNoYW5nZSBhbGwgdGhlIHBsYWNlcyB0aGF0IHJlZmVyIHRoZSBJUCAxJ3MgY29tcGxp
bWVudA0KY2hlY2tzdW0gdG8gaXBjaGVja3N1bS4NCg0KCURhdmlkDQoNCg=

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

On Tue, 2017-02-28 at 14:46 -0800, Alexander Duyck wrote:
> On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> > 
> > sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
> > it can't be used in net core. Like it has been done previously with other
> > symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
> > to allow computation of SCTP checksum in net core after sctp.ko (and thus
> > libcrc32c) has been loaded.
> 
> At a minimum the name really needs to change.  SCTP does not do
> checksums.  It does a CRC, and a CRC is a very different thing.  The
> fact that somebody decided that offloading a CRC could use the same
> framework is very unfortunate, and your patch descriptions in this
> whole set are calling out a CRC as checksums which it is not.

hello Alexander,

thank you for contributing to this topic. I see there has been a similar
discussion some months ago
(https://www.mail-archive.com/netdev@vger.kernel.org/msg94955.html).

> I don't want to see anything "checksum" or "csum" related in the
> naming when it comes to dealing with SCTP unless we absolutely have
> to have it.  So any function names or structures with sctp in the name
> should call out "crc32" or "crc", please don't use checksum.

On Wed, 2017-03-01 at 10:53 +0000, David Laight wrote:
> Then also change all the places that refer the IP 1's compliment
> checksum to ipchecksum.

(but crc32 uses a different polynomial than crc32c! :-) ) I understand 
your concerns, nevertheless we are writing to a member of struct sctphdr
whose name is 'checksum' since the earliest introduction of SCTP; moreover,
similar terminology ('crc32c checksum') is used throughout all RFC4960.
That's why I don't think anybody will be confused by usage of 'csum' or
'checksum' words.

On Tue, 2017-02-28 at 19:17 -0800, Tom Herbert wrote:
> I agree that internal functions to sctp should not refer to checksum,
> but I think we need to take care to be consistent with any external
> API (even if somebody made a mistake defining it this way :-) ). As
> you know the checksum interface must be very precisely defined, there
> is no leeway for ambiguity.

We can make the new symbols more generic removing 'sctp' from the
symbol name, and writing explicitly that skb needs crc32c (rather than
skb does not need internet checksum).

Proposal:
we use crc32c, possibly combined with 'csum' or 'checksum', just like
it has been done in RFC4960.  So, symbol names can be replaced as follows:

RFC v2 name              | RFC v3 name
-------------------------+-----------------------------
warn_sctp_csum_update    | warn_crc32c_csum_update
warn_sctp_csum_combine   | warn_crc32c_csum_combine
sctp_csum_stub           | crc32c_csum_stub
sctp_csum_ops            | crc32c_csum_ops
skb_sctp_csum_help       | skb_crc32c_csum_help
skb->csum_not_inet       | skb->crc32c_csum

please let me know if the proposal can be acceptable from your point of view.

On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
> Unfortunately this potentially pushes the skbuf flags over 32 bits if
> I count correctly. I suggest that you rename csum_bad to
> csum_not_inet. Looks like csum_bad is only set by a grand total of one
> driver and I don't believe that is enough to justify its existence.
> It's probably a good time to remove it.

you are right: find below the current layout obtained with 'allyesconfig':

short unsigned int         queue_mapping;                   /*   140     2 */
unsigned char              __cloned_offset[0];              /*   142     0 */
unsigned char              cloned:1;                        /*   142: 7  1 */
unsigned char              nohdr:1;                         /*   142: 6  1 */
unsigned char              fclone:2;                        /*   142: 4  1 */
unsigned char              peeked:1;                        /*   142: 3  1 */
unsigned char              head_frag:1;                     /*   142: 2  1 */
unsigned char              xmit_more:1;                     /*   142: 1  1 */
unsigned char              __unused:1;                      /*   142: 0  1 */

/* XXX 1 byte hole, try to pack */
unsigned int               headers_start[0];                /*   144     0 */
unsigned char              __pkt_type_offset[0];            /*   144     0 */
unsigned char              pkt_type:3;                      /*   144: 5  1 */

<...>

unsigned char              ipvs_property:1;                 /*   147: 7  1 */
unsigned char              inner_protocol_type:1;           /*   147: 6  1 */
unsigned char              remcsum_offload:1;               /*   147: 5  1 */
unsigned char              offload_fwd_mark:1;              /*   147: 4  1 */
unsigned char              tc_skip_classify:1;              /*   147: 3  1 */
unsigned char              tc_at_ingress:1;                 /*   147: 2  1 */
unsigned char              tc_redirected:1;                 /*   147: 1  1 */
unsigned char              tc_from_ingress:1;               /*   147: 0  1 */
short unsigned int         tc_index;                        /*   148     2 */

/* XXX 2 bytes hole, try to pack */
union {
                unsigned int       csum;                    /*           4 */
                struct {
                        short unsigned int csum_start;      /*   152     2 */
                       short unsigned int csum_offset;      /*   154     2 */
        };                                                  /*           4 */
}                                                           /*   152     4 */

skb->tc_from_ingress is the last element of the 32 bits starting at
skb->pkt_type. There are 16 bits free before skb->csum, and 9 free bits
before skb->pkt_type. I don't think I can easily make room by removing
'csum_bad' as per your suggestion, because it is used by GRO and
netfilter code also (see users of __skb_mark_checksum_bad()). So, either
I place 'csum_not_inet' in one of the two above intervals (i.e replacing
__unused with csum_not_inet AKA crc32c_csum), or I have to give up the
(good) idea of using a bit in sk_buff.

BTW: unlike what I see with other NICs, using ixgbe driver I don't see
corrupted L4 packets, even when SCTP CRC offload is turned off. Looking
at the code, I see ixgbe_tx_csum does a simple test to identify SCTP in
packets with CHECKSUM_PARTIAL and have their checksum resolved by the 
hardware:

switch (skb->csum_offset) {
	case offsetof(struct tcphdr, check):
		/* it's TCP */
		/* fall-through */
	case offsetof(struct udphdr, check)
		/* it's UDP */
		break;
	case offsetof(struct scphdr, checksum):
		if (/* an ipv4 or ipv6 header with protocol equal to
		     * IPPOROTO_SCTP is found
		     */)
		    /* it's SCTP */
			break;
		}
		/* fall through */
	default:
		skb_checksum_help(skb);
}

The above code is functionally similar to what I did in patch 4/5 of the
initial series (http://www.spinics.net/lists/linux-sctp/msg05608.html).
Should we consider it again for fixing wrong CRC32c issues in case using
a bit in struct sk_buff is not viable?

On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
> Return value looks complex. Maybe we should just change
> skb_csum_*_help to return bool, true of checksum was handled false if
> not.

These functions can return -EINVAL if skb is a GSO packet, or -ENOMEM if
skb_linearize(skb) or pskb_expand_head(skb) fail, or 0. I would preserve the
return value of skb_checksum_help() and provide similar range of return values
for skb_sctp_csum_help() (also known as skb_crc32c_csum_help()): this can
help eventual future attempts to remove skb_warn_bad_offload(). It makes
sense to make boolean the return value of skb_csum_hwoffload_help(),
since we are using it only for non-GSO packets.  
	
Thank you in advance for the feedbacks,

regards,

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

On Tue, 2017-02-28 at 14:46 -0800, Alexander Duyck wrote:
> On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> > 
> > sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
> > it can't be used in net core. Like it has been done previously with other
> > symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
> > to allow computation of SCTP checksum in net core after sctp.ko (and thus
> > libcrc32c) has been loaded.
> 
> At a minimum the name really needs to change.  SCTP does not do
> checksums.  It does a CRC, and a CRC is a very different thing.  The
> fact that somebody decided that offloading a CRC could use the same
> framework is very unfortunate, and your patch descriptions in this
> whole set are calling out a CRC as checksums which it is not.

hello Alexander,

thank you for contributing to this topic. I see there has been a similar
discussion some months ago
(https://www.mail-archive.com/netdev@vger.kernel.org/msg94955.html).

> I don't want to see anything "checksum" or "csum" related in the
> naming when it comes to dealing with SCTP unless we absolutely have
> to have it.  So any function names or structures with sctp in the name
> should call out "crc32" or "crc", please don't use checksum.

On Wed, 2017-03-01 at 10:53 +0000, David Laight wrote:
> Then also change all the places that refer the IP 1's compliment
> checksum to ipchecksum.

(but crc32 uses a different polynomial than crc32c! :-) ) I understand 
your concerns, nevertheless we are writing to a member of struct sctphdr
whose name is 'checksum' since the earliest introduction of SCTP; moreover,
similar terminology ('crc32c checksum') is used throughout all RFC4960.
That's why I don't think anybody will be confused by usage of 'csum' or
'checksum' words.

On Tue, 2017-02-28 at 19:17 -0800, Tom Herbert wrote:
> I agree that internal functions to sctp should not refer to checksum,
> but I think we need to take care to be consistent with any external
> API (even if somebody made a mistake defining it this way :-) ). As
> you know the checksum interface must be very precisely defined, there
> is no leeway for ambiguity.

We can make the new symbols more generic removing 'sctp' from the
symbol name, and writing explicitly that skb needs crc32c (rather than
skb does not need internet checksum).

Proposal:
we use crc32c, possibly combined with 'csum' or 'checksum', just like
it has been done in RFC4960.  So, symbol names can be replaced as follows:

RFC v2 name              | RFC v3 name
-------------------------+-----------------------------
warn_sctp_csum_update    | warn_crc32c_csum_update
warn_sctp_csum_combine   | warn_crc32c_csum_combine
sctp_csum_stub           | crc32c_csum_stub
sctp_csum_ops            | crc32c_csum_ops
skb_sctp_csum_help       | skb_crc32c_csum_help
skb->csum_not_inet       | skb->crc32c_csum

please let me know if the proposal can be acceptable from your point of view.

On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
> Unfortunately this potentially pushes the skbuf flags over 32 bits if
> I count correctly. I suggest that you rename csum_bad to
> csum_not_inet. Looks like csum_bad is only set by a grand total of one
> driver and I don't believe that is enough to justify its existence.
> It's probably a good time to remove it.

you are right: find below the current layout obtained with 'allyesconfig':

short unsigned int         queue_mapping;                   /*   140     2 */
unsigned char              __cloned_offset[0];              /*   142     0 */
unsigned char              cloned:1;                        /*   142: 7  1 */
unsigned char              nohdr:1;                         /*   142: 6  1 */
unsigned char              fclone:2;                        /*   142: 4  1 */
unsigned char              peeked:1;                        /*   142: 3  1 */
unsigned char              head_frag:1;                     /*   142: 2  1 */
unsigned char              xmit_more:1;                     /*   142: 1  1 */
unsigned char              __unused:1;                      /*   142: 0  1 */

/* XXX 1 byte hole, try to pack */
unsigned int               headers_start[0];                /*   144     0 */
unsigned char              __pkt_type_offset[0];            /*   144     0 */
unsigned char              pkt_type:3;                      /*   144: 5  1 */

<...>

unsigned char              ipvs_property:1;                 /*   147: 7  1 */
unsigned char              inner_protocol_type:1;           /*   147: 6  1 */
unsigned char              remcsum_offload:1;               /*   147: 5  1 */
unsigned char              offload_fwd_mark:1;              /*   147: 4  1 */
unsigned char              tc_skip_classify:1;              /*   147: 3  1 */
unsigned char              tc_at_ingress:1;                 /*   147: 2  1 */
unsigned char              tc_redirected:1;                 /*   147: 1  1 */
unsigned char              tc_from_ingress:1;               /*   147: 0  1 */
short unsigned int         tc_index;                        /*   148     2 */

/* XXX 2 bytes hole, try to pack */
union {
                unsigned int       csum;                    /*           4 */
                struct {
                        short unsigned int csum_start;      /*   152     2 */
                       short unsigned int csum_offset;      /*   154     2 */
        };                                                  /*           4 */
}                                                           /*   152     4 */

skb->tc_from_ingress is the last element of the 32 bits starting at
skb->pkt_type. There are 16 bits free before skb->csum, and 9 free bits
before skb->pkt_type. I don't think I can easily make room by removing
'csum_bad' as per your suggestion, because it is used by GRO and
netfilter code also (see users of __skb_mark_checksum_bad()). So, either
I place 'csum_not_inet' in one of the two above intervals (i.e replacing
__unused with csum_not_inet AKA crc32c_csum), or I have to give up the
(good) idea of using a bit in sk_buff.

BTW: unlike what I see with other NICs, using ixgbe driver I don't see
corrupted L4 packets, even when SCTP CRC offload is turned off. Looking
at the code, I see ixgbe_tx_csum does a simple test to identify SCTP in
packets with CHECKSUM_PARTIAL and have their checksum resolved by the 
hardware:

switch (skb->csum_offset) {
	case offsetof(struct tcphdr, check):
		/* it's TCP */
		/* fall-through */
	case offsetof(struct udphdr, check)
		/* it's UDP */
		break;
	case offsetof(struct scphdr, checksum):
		if (/* an ipv4 or ipv6 header with protocol equal to
		     * IPPOROTO_SCTP is found
		     */)
		    /* it's SCTP */
			break;
		}
		/* fall through */
	default:
		skb_checksum_help(skb);
}

The above code is functionally similar to what I did in patch 4/5 of the
initial series (http://www.spinics.net/lists/linux-sctp/msg05608.html).
Should we consider it again for fixing wrong CRC32c issues in case using
a bit in struct sk_buff is not viable?

On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
> Return value looks complex. Maybe we should just change
> skb_csum_*_help to return bool, true of checksum was handled false if
> not.

These functions can return -EINVAL if skb is a GSO packet, or -ENOMEM if
skb_linearize(skb) or pskb_expand_head(skb) fail, or 0. I would preserve the
return value of skb_checksum_help() and provide similar range of return values
for skb_sctp_csum_help() (also known as skb_crc32c_csum_help()): this can
help eventual future attempts to remove skb_warn_bad_offload(). It makes
sense to make boolean the return value of skb_csum_hwoffload_help(),
since we are using it only for non-GSO packets.  
	
Thank you in advance for the feedbacks,

regards,
--
davide

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Alexander Duyck]

On Mon, Mar 6, 2017 at 1:51 PM, Davide Caratti <dcaratti@redhat.com> wrote:
> On Tue, 2017-02-28 at 14:46 -0800, Alexander Duyck wrote:
>> On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
>> >
>> > sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
>> > it can't be used in net core. Like it has been done previously with other
>> > symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
>> > to allow computation of SCTP checksum in net core after sctp.ko (and thus
>> > libcrc32c) has been loaded.
>>
>> At a minimum the name really needs to change.  SCTP does not do
>> checksums.  It does a CRC, and a CRC is a very different thing.  The
>> fact that somebody decided that offloading a CRC could use the same
>> framework is very unfortunate, and your patch descriptions in this
>> whole set are calling out a CRC as checksums which it is not.
>
> hello Alexander,
>
> thank you for contributing to this topic. I see there has been a similar
> discussion some months ago
> (https://www.mail-archive.com/netdev@vger.kernel.org/msg94955.html).
>
>> I don't want to see anything "checksum" or "csum" related in the
>> naming when it comes to dealing with SCTP unless we absolutely have
>> to have it.  So any function names or structures with sctp in the name
>> should call out "crc32" or "crc", please don't use checksum.
>
> On Wed, 2017-03-01 at 10:53 +0000, David Laight wrote:
>> Then also change all the places that refer the IP 1's compliment
>> checksum to ipchecksum.
>
> (but crc32 uses a different polynomial than crc32c! :-) ) I understand
> your concerns, nevertheless we are writing to a member of struct sctphdr
> whose name is 'checksum' since the earliest introduction of SCTP; moreover,
> similar terminology ('crc32c checksum') is used throughout all RFC4960.
> That's why I don't think anybody will be confused by usage of 'csum' or
> 'checksum' words.
>
> On Tue, 2017-02-28 at 19:17 -0800, Tom Herbert wrote:
>> I agree that internal functions to sctp should not refer to checksum,
>> but I think we need to take care to be consistent with any external
>> API (even if somebody made a mistake defining it this way :-) ). As
>> you know the checksum interface must be very precisely defined, there
>> is no leeway for ambiguity.
>
> We can make the new symbols more generic removing 'sctp' from the
> symbol name, and writing explicitly that skb needs crc32c (rather than
> skb does not need internet checksum).
>
> Proposal:
> we use crc32c, possibly combined with 'csum' or 'checksum', just like
> it has been done in RFC4960.  So, symbol names can be replaced as follows:
>
> RFC v2 name              | RFC v3 name
> -------------------------+-----------------------------
> warn_sctp_csum_update    | warn_crc32c_csum_update
> warn_sctp_csum_combine   | warn_crc32c_csum_combine
> sctp_csum_stub           | crc32c_csum_stub
> sctp_csum_ops            | crc32c_csum_ops
> skb_sctp_csum_help       | skb_crc32c_csum_help
> skb->csum_not_inet       | skb->crc32c_csum
>
> please let me know if the proposal can be acceptable from your point of view.

I do like this approach better.  You might even take this one step
further.  You could convert crc32_csum into a 1 bit enum for now.
Basically you would use 0 for 1's compliement csum, and 1 to represent
a crc32c csum.  Then if we end up having to add another bit for
something like FCoE in the future it would give us 4 possible checksum
types instead of just giving us 1 with a bit mask.

> On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
>> Unfortunately this potentially pushes the skbuf flags over 32 bits if
>> I count correctly. I suggest that you rename csum_bad to
>> csum_not_inet. Looks like csum_bad is only set by a grand total of one
>> driver and I don't believe that is enough to justify its existence.
>> It's probably a good time to remove it.
>
> you are right: find below the current layout obtained with 'allyesconfig':
>
> short unsigned int         queue_mapping;                   /*   140     2 */
> unsigned char              __cloned_offset[0];              /*   142     0 */
> unsigned char              cloned:1;                        /*   142: 7  1 */
> unsigned char              nohdr:1;                         /*   142: 6  1 */
> unsigned char              fclone:2;                        /*   142: 4  1 */
> unsigned char              peeked:1;                        /*   142: 3  1 */
> unsigned char              head_frag:1;                     /*   142: 2  1 */
> unsigned char              xmit_more:1;                     /*   142: 1  1 */
> unsigned char              __unused:1;                      /*   142: 0  1 */
>
> /* XXX 1 byte hole, try to pack */
> unsigned int               headers_start[0];                /*   144     0 */
> unsigned char              __pkt_type_offset[0];            /*   144     0 */
> unsigned char              pkt_type:3;                      /*   144: 5  1 */
>
> <...>
>
> unsigned char              ipvs_property:1;                 /*   147: 7  1 */
> unsigned char              inner_protocol_type:1;           /*   147: 6  1 */
> unsigned char              remcsum_offload:1;               /*   147: 5  1 */
> unsigned char              offload_fwd_mark:1;              /*   147: 4  1 */
> unsigned char              tc_skip_classify:1;              /*   147: 3  1 */
> unsigned char              tc_at_ingress:1;                 /*   147: 2  1 */
> unsigned char              tc_redirected:1;                 /*   147: 1  1 */
> unsigned char              tc_from_ingress:1;               /*   147: 0  1 */
> short unsigned int         tc_index;                        /*   148     2 */
>
> /* XXX 2 bytes hole, try to pack */
> union {
>                 unsigned int       csum;                    /*           4 */
>                 struct {
>                         short unsigned int csum_start;      /*   152     2 */
>                        short unsigned int csum_offset;      /*   154     2 */
>         };                                                  /*           4 */
> }                                                           /*   152     4 */
>
> skb->tc_from_ingress is the last element of the 32 bits starting at
> skb->pkt_type. There are 16 bits free before skb->csum, and 9 free bits
> before skb->pkt_type. I don't think I can easily make room by removing
> 'csum_bad' as per your suggestion, because it is used by GRO and
> netfilter code also (see users of __skb_mark_checksum_bad()). So, either
> I place 'csum_not_inet' in one of the two above intervals (i.e replacing
> __unused with csum_not_inet AKA crc32c_csum), or I have to give up the
> (good) idea of using a bit in sk_buff.
>
> BTW: unlike what I see with other NICs, using ixgbe driver I don't see
> corrupted L4 packets, even when SCTP CRC offload is turned off. Looking
> at the code, I see ixgbe_tx_csum does a simple test to identify SCTP in
> packets with CHECKSUM_PARTIAL and have their checksum resolved by the
> hardware:
>
> switch (skb->csum_offset) {
>         case offsetof(struct tcphdr, check):
>                 /* it's TCP */
>                 /* fall-through */
>         case offsetof(struct udphdr, check)
>                 /* it's UDP */
>                 break;
>         case offsetof(struct scphdr, checksum):
>                 if (/* an ipv4 or ipv6 header with protocol equal to
>                      * IPPOROTO_SCTP is found
>                      */)
>                     /* it's SCTP */
>                         break;
>                 }
>                 /* fall through */
>         default:
>                 skb_checksum_help(skb);
> }
>
> The above code is functionally similar to what I did in patch 4/5 of the
> initial series (http://www.spinics.net/lists/linux-sctp/msg05608.html).
> Should we consider it again for fixing wrong CRC32c issues in case using
> a bit in struct sk_buff is not viable?

I would say if you can't use an extra bit to indicate the checksum
type you probably don't have too much other choice.

As far as the patch you provided I would say it is a good start, but
was a bit to aggressive in a few spots.  For now we don't have support
for offloading crc32c when encapsulating a frame so you don't need to
worry about that too much for now.  Also as far as the features test
you should only need to find that one of the feature bits is set in
the list you were testing.  What might make sense would be to look
into updating can_checksum_protocol to possibly factor in csum_offset
when determining if we can offload it or not.

> On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
>> Return value looks complex. Maybe we should just change
>> skb_csum_*_help to return bool, true of checksum was handled false if
>> not.
>
> These functions can return -EINVAL if skb is a GSO packet, or -ENOMEM if
> skb_linearize(skb) or pskb_expand_head(skb) fail, or 0. I would preserve the
> return value of skb_checksum_help() and provide similar range of return values
> for skb_sctp_csum_help() (also known as skb_crc32c_csum_help()): this can
> help eventual future attempts to remove skb_warn_bad_offload(). It makes
> sense to make boolean the return value of skb_csum_hwoffload_help(),
> since we are using it only for non-GSO packets.
>
> Thank you in advance for the feedbacks,
>
> regards,
> --
> davide
>
>

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Alexander Duyck]

On Mon, Mar 6, 2017 at 1:51 PM, Davide Caratti <dcaratti@redhat.com> wrote:
> On Tue, 2017-02-28 at 14:46 -0800, Alexander Duyck wrote:
>> On Tue, Feb 28, 2017 at 2:32 AM, Davide Caratti <dcaratti@redhat.com> wrote:
>> >
>> > sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
>> > it can't be used in net core. Like it has been done previously with other
>> > symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
>> > to allow computation of SCTP checksum in net core after sctp.ko (and thus
>> > libcrc32c) has been loaded.
>>
>> At a minimum the name really needs to change.  SCTP does not do
>> checksums.  It does a CRC, and a CRC is a very different thing.  The
>> fact that somebody decided that offloading a CRC could use the same
>> framework is very unfortunate, and your patch descriptions in this
>> whole set are calling out a CRC as checksums which it is not.
>
> hello Alexander,
>
> thank you for contributing to this topic. I see there has been a similar
> discussion some months ago
> (https://www.mail-archive.com/netdev@vger.kernel.org/msg94955.html).
>
>> I don't want to see anything "checksum" or "csum" related in the
>> naming when it comes to dealing with SCTP unless we absolutely have
>> to have it.  So any function names or structures with sctp in the name
>> should call out "crc32" or "crc", please don't use checksum.
>
> On Wed, 2017-03-01 at 10:53 +0000, David Laight wrote:
>> Then also change all the places that refer the IP 1's compliment
>> checksum to ipchecksum.
>
> (but crc32 uses a different polynomial than crc32c! :-) ) I understand
> your concerns, nevertheless we are writing to a member of struct sctphdr
> whose name is 'checksum' since the earliest introduction of SCTP; moreover,
> similar terminology ('crc32c checksum') is used throughout all RFC4960.
> That's why I don't think anybody will be confused by usage of 'csum' or
> 'checksum' words.
>
> On Tue, 2017-02-28 at 19:17 -0800, Tom Herbert wrote:
>> I agree that internal functions to sctp should not refer to checksum,
>> but I think we need to take care to be consistent with any external
>> API (even if somebody made a mistake defining it this way :-) ). As
>> you know the checksum interface must be very precisely defined, there
>> is no leeway for ambiguity.
>
> We can make the new symbols more generic removing 'sctp' from the
> symbol name, and writing explicitly that skb needs crc32c (rather than
> skb does not need internet checksum).
>
> Proposal:
> we use crc32c, possibly combined with 'csum' or 'checksum', just like
> it has been done in RFC4960.  So, symbol names can be replaced as follows:
>
> RFC v2 name              | RFC v3 name
> -------------------------+-----------------------------
> warn_sctp_csum_update    | warn_crc32c_csum_update
> warn_sctp_csum_combine   | warn_crc32c_csum_combine
> sctp_csum_stub           | crc32c_csum_stub
> sctp_csum_ops            | crc32c_csum_ops
> skb_sctp_csum_help       | skb_crc32c_csum_help
> skb->csum_not_inet       | skb->crc32c_csum
>
> please let me know if the proposal can be acceptable from your point of view.

I do like this approach better.  You might even take this one step
further.  You could convert crc32_csum into a 1 bit enum for now.
Basically you would use 0 for 1's compliement csum, and 1 to represent
a crc32c csum.  Then if we end up having to add another bit for
something like FCoE in the future it would give us 4 possible checksum
types instead of just giving us 1 with a bit mask.

> On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
>> Unfortunately this potentially pushes the skbuf flags over 32 bits if
>> I count correctly. I suggest that you rename csum_bad to
>> csum_not_inet. Looks like csum_bad is only set by a grand total of one
>> driver and I don't believe that is enough to justify its existence.
>> It's probably a good time to remove it.
>
> you are right: find below the current layout obtained with 'allyesconfig':
>
> short unsigned int         queue_mapping;                   /*   140     2 */
> unsigned char              __cloned_offset[0];              /*   142     0 */
> unsigned char              cloned:1;                        /*   142: 7  1 */
> unsigned char              nohdr:1;                         /*   142: 6  1 */
> unsigned char              fclone:2;                        /*   142: 4  1 */
> unsigned char              peeked:1;                        /*   142: 3  1 */
> unsigned char              head_frag:1;                     /*   142: 2  1 */
> unsigned char              xmit_more:1;                     /*   142: 1  1 */
> unsigned char              __unused:1;                      /*   142: 0  1 */
>
> /* XXX 1 byte hole, try to pack */
> unsigned int               headers_start[0];                /*   144     0 */
> unsigned char              __pkt_type_offset[0];            /*   144     0 */
> unsigned char              pkt_type:3;                      /*   144: 5  1 */
>
> <...>
>
> unsigned char              ipvs_property:1;                 /*   147: 7  1 */
> unsigned char              inner_protocol_type:1;           /*   147: 6  1 */
> unsigned char              remcsum_offload:1;               /*   147: 5  1 */
> unsigned char              offload_fwd_mark:1;              /*   147: 4  1 */
> unsigned char              tc_skip_classify:1;              /*   147: 3  1 */
> unsigned char              tc_at_ingress:1;                 /*   147: 2  1 */
> unsigned char              tc_redirected:1;                 /*   147: 1  1 */
> unsigned char              tc_from_ingress:1;               /*   147: 0  1 */
> short unsigned int         tc_index;                        /*   148     2 */
>
> /* XXX 2 bytes hole, try to pack */
> union {
>                 unsigned int       csum;                    /*           4 */
>                 struct {
>                         short unsigned int csum_start;      /*   152     2 */
>                        short unsigned int csum_offset;      /*   154     2 */
>         };                                                  /*           4 */
> }                                                           /*   152     4 */
>
> skb->tc_from_ingress is the last element of the 32 bits starting at
> skb->pkt_type. There are 16 bits free before skb->csum, and 9 free bits
> before skb->pkt_type. I don't think I can easily make room by removing
> 'csum_bad' as per your suggestion, because it is used by GRO and
> netfilter code also (see users of __skb_mark_checksum_bad()). So, either
> I place 'csum_not_inet' in one of the two above intervals (i.e replacing
> __unused with csum_not_inet AKA crc32c_csum), or I have to give up the
> (good) idea of using a bit in sk_buff.
>
> BTW: unlike what I see with other NICs, using ixgbe driver I don't see
> corrupted L4 packets, even when SCTP CRC offload is turned off. Looking
> at the code, I see ixgbe_tx_csum does a simple test to identify SCTP in
> packets with CHECKSUM_PARTIAL and have their checksum resolved by the
> hardware:
>
> switch (skb->csum_offset) {
>         case offsetof(struct tcphdr, check):
>                 /* it's TCP */
>                 /* fall-through */
>         case offsetof(struct udphdr, check)
>                 /* it's UDP */
>                 break;
>         case offsetof(struct scphdr, checksum):
>                 if (/* an ipv4 or ipv6 header with protocol equal to
>                      * IPPOROTO_SCTP is found
>                      */)
>                     /* it's SCTP */
>                         break;
>                 }
>                 /* fall through */
>         default:
>                 skb_checksum_help(skb);
> }
>
> The above code is functionally similar to what I did in patch 4/5 of the
> initial series (http://www.spinics.net/lists/linux-sctp/msg05608.html).
> Should we consider it again for fixing wrong CRC32c issues in case using
> a bit in struct sk_buff is not viable?

I would say if you can't use an extra bit to indicate the checksum
type you probably don't have too much other choice.

As far as the patch you provided I would say it is a good start, but
was a bit to aggressive in a few spots.  For now we don't have support
for offloading crc32c when encapsulating a frame so you don't need to
worry about that too much for now.  Also as far as the features test
you should only need to find that one of the feature bits is set in
the list you were testing.  What might make sense would be to look
into updating can_checksum_protocol to possibly factor in csum_offset
when determining if we can offload it or not.

> On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
>> Return value looks complex. Maybe we should just change
>> skb_csum_*_help to return bool, true of checksum was handled false if
>> not.
>
> These functions can return -EINVAL if skb is a GSO packet, or -ENOMEM if
> skb_linearize(skb) or pskb_expand_head(skb) fail, or 0. I would preserve the
> return value of skb_checksum_help() and provide similar range of return values
> for skb_sctp_csum_help() (also known as skb_crc32c_csum_help()): this can
> help eventual future attempts to remove skb_warn_bad_offload(). It makes
> sense to make boolean the return value of skb_csum_hwoffload_help(),
> since we are using it only for non-GSO packets.
>
> Thank you in advance for the feedbacks,
>
> regards,
> --
> davide
>
>

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

hello Alexander and Tom,

On Tue, 2017-03-07 at 10:06 -0800, Alexander Duyck wrote:
> 
> You might even take this one step
> further.  You could convert crc32_csum into a 1 bit enum for now.
> Basically you would use 0 for 1's compliement csum, and 1 to represent
> a crc32c csum.  Then if we end up having to add another bit for
> something like FCoE in the future it would give us 4 possible checksum
> types instead of just giving us 1 with a bit mask.
<...>
> I would say if you can't use an extra bit to indicate the checksum type
> you probably don't have too much other choice.

Unluckily, there are no free bits in struct sk_buff (i.e. there is 1 + 8 
bits after skb->xmit_more, but its content would be be lost after
__copy_skb_header() _ so simply we can't use them).
As soon as two bits in sk_buff are freed, we will be able to rely on the
skb metadata, instead of inspecting the packet headers, to understand
what algorithm is used to ensure data integrity in the packet.

> As far as the patch you provided I would say it is a good start, but
> was a bit to aggressive in a few spots.  For now we don't have support
> for offloading crc32c when encapsulating a frame so you don't need to
> worry about that too much for now.  

Ok _ so, skb_csum_hwoffload_help(skb, features) will assume that skb needs
crc32c if all the following conditions are met:
- feature bitmask does not have NETIF_F_SCTP_CRC bit set
- skb->csum_offset is equal to 8 (i.e. offsetof(struct sctphdr,checksum)).
- skb is carrying an (outer, non encapsulated) IPv4/IPv6 header with
protocol number equal to 132 (i.e. IPPROTO_SCTP)

In any other case, we will compute the internet checksum or do nothing _
just what it's happening right now for non-GSO packets reaching
validate_xmit_skb(). I think this implementation can be extended to the
FCoE case if needed.

> Also as far as the features test
> you should only need to find that one of the feature bits is set in
> the list you were testing.  What might make sense would be to look
> into updating can_checksum_protocol to possibly factor in csum_offset
> when determining if we can offload it or not.

Looking again at the code, I noticed that the number of test on 'features'
bits can be reduced: see below.

can_checksum_protocol() takes an ethertype as parameter, so we would need
to invent a non-standardized valure for SCTP. Moreover, it is used in
skb_segment() for GSO: so, adding extra CPU cycles would affect
performance on a path where the kernel is already showing the right
behavior (GSO SCTP packets have their CRC32 computed correctly when
sctp_gso_segment() is called).     


hello Tom,
> > On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
> > > 
> > > Return value looks complex. Maybe we should just change
> > > skb_csum_*_help to return bool, true of checksum was handled false if
> > > not.
> > 
> > These functions can return -EINVAL if skb is a GSO packet, or -ENOMEM if
> > skb_linearize(skb) or pskb_expand_head(skb) fail, or 0. I would preserve the
> > return value of skb_checksum_help() and provide similar range of return values
> > for skb_sctp_csum_help() (also known as skb_crc32c_csum_help()): this can
> > help eventual future attempts to remove skb_warn_bad_offload(). It makes
> > sense to make boolean the return value of skb_csum_hwoffload_help(),
> > since we are using it only for non-GSO packets.

the above statement is still valid after the body of the function changed. A
very small thing: according to the kernel coding style, I should find a
'predicative' name for this function. Something like

skb_can_resolve_partial_csum(),

(which is terrible, I know)

or similar / better.

Please let me know if you think the code below is ok for you.
Thank you in advance!

regards,

--
davide


--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2987,6 +2987,38 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+static bool skb_csum_hwoffload_help(struct sk_buff *skb,
+				    netdev_features_t features)
+{
+	bool crc32c_csum_hwoff = !!(features & NETIF_F_SCTP_CRC);
+	bool inet_csum_hwoff = !!(features & NETIF_F_CSUM_MASK);
+	unsigned int offset = 0;
+
+	if (crc32c_csum_hwoff && inet_csum_hwoff)
+		return true;
+
+	if (skb->encapsulation ||
+	    skb->csum_offset != offsetof(struct sctphdr, checksum))
+		goto inet_csum;
+
+	switch (vlan_get_protocol(skb)) {
+	case ntohs(ETH_P_IP):
+		if (ip_hdr(skb)->protocol == IPPROTO_SCTP)
+			goto crc32c_csum;
+		break;
+	case ntohs(ETH_P_IPV6):
+		if (ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL) ==
+		    IPPROTO_SCTP)
+			goto crc32c_csum;
+		break;
+	}
+inet_csum:
+	return inet_csum_hwoff ? true : !skb_checksum_help(skb);
+
+crc32c_csum:
+	return crc32c_csum_hwoff ? true : !skb_crc32c_csum_help(skb);
+}
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -3022,8 +3054,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features) == false)
 				goto out_kfree_skb;
 		}
 	}

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

hello Alexander and Tom,

On Tue, 2017-03-07 at 10:06 -0800, Alexander Duyck wrote:
> 
> You might even take this one step
> further.  You could convert crc32_csum into a 1 bit enum for now.
> Basically you would use 0 for 1's compliement csum, and 1 to represent
> a crc32c csum.  Then if we end up having to add another bit for
> something like FCoE in the future it would give us 4 possible checksum
> types instead of just giving us 1 with a bit mask.
<...>
> I would say if you can't use an extra bit to indicate the checksum type
> you probably don't have too much other choice.

Unluckily, there are no free bits in struct sk_buff (i.e. there is 1 + 8 
bits after skb->xmit_more, but its content would be be lost after
__copy_skb_header() _ so simply we can't use them).
As soon as two bits in sk_buff are freed, we will be able to rely on the
skb metadata, instead of inspecting the packet headers, to understand
what algorithm is used to ensure data integrity in the packet.

> As far as the patch you provided I would say it is a good start, but
> was a bit to aggressive in a few spots.  For now we don't have support
> for offloading crc32c when encapsulating a frame so you don't need to
> worry about that too much for now.  

Ok _ so, skb_csum_hwoffload_help(skb, features) will assume that skb needs
crc32c if all the following conditions are met:
- feature bitmask does not have NETIF_F_SCTP_CRC bit set
- skb->csum_offset is equal to 8 (i.e. offsetof(struct sctphdr,checksum)).
- skb is carrying an (outer, non encapsulated) IPv4/IPv6 header with
protocol number equal to 132 (i.e. IPPROTO_SCTP)

In any other case, we will compute the internet checksum or do nothing _
just what it's happening right now for non-GSO packets reaching
validate_xmit_skb(). I think this implementation can be extended to the
FCoE case if needed.

> Also as far as the features test
> you should only need to find that one of the feature bits is set in
> the list you were testing.  What might make sense would be to look
> into updating can_checksum_protocol to possibly factor in csum_offset
> when determining if we can offload it or not.

Looking again at the code, I noticed that the number of test on 'features'
bits can be reduced: see below.

can_checksum_protocol() takes an ethertype as parameter, so we would need
to invent a non-standardized valure for SCTP. Moreover, it is used in
skb_segment() for GSO: so, adding extra CPU cycles would affect
performance on a path where the kernel is already showing the right
behavior (GSO SCTP packets have their CRC32 computed correctly when
sctp_gso_segment() is called).     


hello Tom,
> > On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
> > > 
> > > Return value looks complex. Maybe we should just change
> > > skb_csum_*_help to return bool, true of checksum was handled false if
> > > not.
> > 
> > These functions can return -EINVAL if skb is a GSO packet, or -ENOMEM if
> > skb_linearize(skb) or pskb_expand_head(skb) fail, or 0. I would preserve the
> > return value of skb_checksum_help() and provide similar range of return values
> > for skb_sctp_csum_help() (also known as skb_crc32c_csum_help()): this can
> > help eventual future attempts to remove skb_warn_bad_offload(). It makes
> > sense to make boolean the return value of skb_csum_hwoffload_help(),
> > since we are using it only for non-GSO packets.

the above statement is still valid after the body of the function changed. A
very small thing: according to the kernel coding style, I should find a
'predicative' name for this function. Something like

skb_can_resolve_partial_csum(),

(which is terrible, I know)

or similar / better.

Please let me know if you think the code below is ok for you.
Thank you in advance!

regards,

--
davide


--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2987,6 +2987,38 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+static bool skb_csum_hwoffload_help(struct sk_buff *skb,
+				    netdev_features_t features)
+{
+	bool crc32c_csum_hwoff = !!(features & NETIF_F_SCTP_CRC);
+	bool inet_csum_hwoff = !!(features & NETIF_F_CSUM_MASK);
+	unsigned int offset = 0;
+
+	if (crc32c_csum_hwoff && inet_csum_hwoff)
+		return true;
+
+	if (skb->encapsulation ||
+	    skb->csum_offset != offsetof(struct sctphdr, checksum))
+		goto inet_csum;
+
+	switch (vlan_get_protocol(skb)) {
+	case ntohs(ETH_P_IP):
+		if (ip_hdr(skb)->protocol = IPPROTO_SCTP)
+			goto crc32c_csum;
+		break;
+	case ntohs(ETH_P_IPV6):
+		if (ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL) =
+		    IPPROTO_SCTP)
+			goto crc32c_csum;
+		break;
+	}
+inet_csum:
+	return inet_csum_hwoff ? true : !skb_checksum_help(skb);
+
+crc32c_csum:
+	return crc32c_csum_hwoff ? true : !skb_crc32c_csum_help(skb);
+}
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -3022,8 +3054,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features) = false)
 				goto out_kfree_skb;
 		}
 	}

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Tom Herbert]

On Sat, Mar 18, 2017 at 6:17 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> hello Alexander and Tom,
>
> On Tue, 2017-03-07 at 10:06 -0800, Alexander Duyck wrote:
>>
>> You might even take this one step
>> further.  You could convert crc32_csum into a 1 bit enum for now.
>> Basically you would use 0 for 1's compliement csum, and 1 to represent
>> a crc32c csum.  Then if we end up having to add another bit for
>> something like FCoE in the future it would give us 4 possible checksum
>> types instead of just giving us 1 with a bit mask.
> <...>
>> I would say if you can't use an extra bit to indicate the checksum type
>> you probably don't have too much other choice.
>
> Unluckily, there are no free bits in struct sk_buff (i.e. there is 1 + 8
> bits after skb->xmit_more, but its content would be be lost after
> __copy_skb_header() _ so simply we can't use them).
> As soon as two bits in sk_buff are freed, we will be able to rely on the
> skb metadata, instead of inspecting the packet headers, to understand
> what algorithm is used to ensure data integrity in the packet.
>
>> As far as the patch you provided I would say it is a good start, but
>> was a bit to aggressive in a few spots.  For now we don't have support
>> for offloading crc32c when encapsulating a frame so you don't need to
>> worry about that too much for now.
>
> Ok _ so, skb_csum_hwoffload_help(skb, features) will assume that skb needs
> crc32c if all the following conditions are met:
> - feature bitmask does not have NETIF_F_SCTP_CRC bit set
> - skb->csum_offset is equal to 8 (i.e. offsetof(struct sctphdr,checksum)).
> - skb is carrying an (outer, non encapsulated) IPv4/IPv6 header with
> protocol number equal to 132 (i.e. IPPROTO_SCTP)
>
That's too complicated. Just create a non_ip_csum bit in skbuff.
csum_bad can replaced with this I think. If the bit is set then more
work can be done to differentiate between alternative checksums.

Tom

> In any other case, we will compute the internet checksum or do nothing _
> just what it's happening right now for non-GSO packets reaching
> validate_xmit_skb(). I think this implementation can be extended to the
> FCoE case if needed.
>
>> Also as far as the features test
>> you should only need to find that one of the feature bits is set in
>> the list you were testing.  What might make sense would be to look
>> into updating can_checksum_protocol to possibly factor in csum_offset
>> when determining if we can offload it or not.
>
> Looking again at the code, I noticed that the number of test on 'features'
> bits can be reduced: see below.
>
> can_checksum_protocol() takes an ethertype as parameter, so we would need
> to invent a non-standardized valure for SCTP. Moreover, it is used in
> skb_segment() for GSO: so, adding extra CPU cycles would affect
> performance on a path where the kernel is already showing the right
> behavior (GSO SCTP packets have their CRC32 computed correctly when
> sctp_gso_segment() is called).
>
>
> hello Tom,
>> > On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
>> > >
>> > > Return value looks complex. Maybe we should just change
>> > > skb_csum_*_help to return bool, true of checksum was handled false if
>> > > not.
>> >
>> > These functions can return -EINVAL if skb is a GSO packet, or -ENOMEM if
>> > skb_linearize(skb) or pskb_expand_head(skb) fail, or 0. I would preserve the
>> > return value of skb_checksum_help() and provide similar range of return values
>> > for skb_sctp_csum_help() (also known as skb_crc32c_csum_help()): this can
>> > help eventual future attempts to remove skb_warn_bad_offload(). It makes
>> > sense to make boolean the return value of skb_csum_hwoffload_help(),
>> > since we are using it only for non-GSO packets.
>
> the above statement is still valid after the body of the function changed. A
> very small thing: according to the kernel coding style, I should find a
> 'predicative' name for this function. Something like
>
> skb_can_resolve_partial_csum(),
>
> (which is terrible, I know)
>
> or similar / better.
>
> Please let me know if you think the code below is ok for you.
> Thank you in advance!
>
> regards,
>
> --
> davide
>
>
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2987,6 +2987,38 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
>         return skb;
>  }
>
> +static bool skb_csum_hwoffload_help(struct sk_buff *skb,
> +                                   netdev_features_t features)
> +{
> +       bool crc32c_csum_hwoff = !!(features & NETIF_F_SCTP_CRC);
> +       bool inet_csum_hwoff = !!(features & NETIF_F_CSUM_MASK);
> +       unsigned int offset = 0;
> +
> +       if (crc32c_csum_hwoff && inet_csum_hwoff)
> +               return true;
> +
> +       if (skb->encapsulation ||
> +           skb->csum_offset != offsetof(struct sctphdr, checksum))
> +               goto inet_csum;
> +
> +       switch (vlan_get_protocol(skb)) {
> +       case ntohs(ETH_P_IP):
> +               if (ip_hdr(skb)->protocol == IPPROTO_SCTP)
> +                       goto crc32c_csum;
> +               break;
> +       case ntohs(ETH_P_IPV6):
> +               if (ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL) ==
> +                   IPPROTO_SCTP)
> +                       goto crc32c_csum;
> +               break;
> +       }
> +inet_csum:
> +       return inet_csum_hwoff ? true : !skb_checksum_help(skb);
> +
> +crc32c_csum:
> +       return crc32c_csum_hwoff ? true : !skb_crc32c_csum_help(skb);
> +}
> +
>  static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
>  {
>         netdev_features_t features;
> @@ -3022,8 +3054,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
>                         else
>                                 skb_set_transport_header(skb,
>                                                          skb_checksum_start_offset(skb));
> -                       if (!(features & NETIF_F_CSUM_MASK) &&
> -                           skb_checksum_help(skb))
> +                       if (skb_csum_hwoffload_help(skb, features) == false)
>                                 goto out_kfree_skb;
>                 }
>         }
>
>
>

Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets

[Tom Herbert]

On Sat, Mar 18, 2017 at 6:17 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> hello Alexander and Tom,
>
> On Tue, 2017-03-07 at 10:06 -0800, Alexander Duyck wrote:
>>
>> You might even take this one step
>> further.  You could convert crc32_csum into a 1 bit enum for now.
>> Basically you would use 0 for 1's compliement csum, and 1 to represent
>> a crc32c csum.  Then if we end up having to add another bit for
>> something like FCoE in the future it would give us 4 possible checksum
>> types instead of just giving us 1 with a bit mask.
> <...>
>> I would say if you can't use an extra bit to indicate the checksum type
>> you probably don't have too much other choice.
>
> Unluckily, there are no free bits in struct sk_buff (i.e. there is 1 + 8
> bits after skb->xmit_more, but its content would be be lost after
> __copy_skb_header() _ so simply we can't use them).
> As soon as two bits in sk_buff are freed, we will be able to rely on the
> skb metadata, instead of inspecting the packet headers, to understand
> what algorithm is used to ensure data integrity in the packet.
>
>> As far as the patch you provided I would say it is a good start, but
>> was a bit to aggressive in a few spots.  For now we don't have support
>> for offloading crc32c when encapsulating a frame so you don't need to
>> worry about that too much for now.
>
> Ok _ so, skb_csum_hwoffload_help(skb, features) will assume that skb needs
> crc32c if all the following conditions are met:
> - feature bitmask does not have NETIF_F_SCTP_CRC bit set
> - skb->csum_offset is equal to 8 (i.e. offsetof(struct sctphdr,checksum)).
> - skb is carrying an (outer, non encapsulated) IPv4/IPv6 header with
> protocol number equal to 132 (i.e. IPPROTO_SCTP)
>
That's too complicated. Just create a non_ip_csum bit in skbuff.
csum_bad can replaced with this I think. If the bit is set then more
work can be done to differentiate between alternative checksums.

Tom

> In any other case, we will compute the internet checksum or do nothing _
> just what it's happening right now for non-GSO packets reaching
> validate_xmit_skb(). I think this implementation can be extended to the
> FCoE case if needed.
>
>> Also as far as the features test
>> you should only need to find that one of the feature bits is set in
>> the list you were testing.  What might make sense would be to look
>> into updating can_checksum_protocol to possibly factor in csum_offset
>> when determining if we can offload it or not.
>
> Looking again at the code, I noticed that the number of test on 'features'
> bits can be reduced: see below.
>
> can_checksum_protocol() takes an ethertype as parameter, so we would need
> to invent a non-standardized valure for SCTP. Moreover, it is used in
> skb_segment() for GSO: so, adding extra CPU cycles would affect
> performance on a path where the kernel is already showing the right
> behavior (GSO SCTP packets have their CRC32 computed correctly when
> sctp_gso_segment() is called).
>
>
> hello Tom,
>> > On Tue, 2017-02-28 at 11:50 -0800, Tom Herbert wrote:
>> > >
>> > > Return value looks complex. Maybe we should just change
>> > > skb_csum_*_help to return bool, true of checksum was handled false if
>> > > not.
>> >
>> > These functions can return -EINVAL if skb is a GSO packet, or -ENOMEM if
>> > skb_linearize(skb) or pskb_expand_head(skb) fail, or 0. I would preserve the
>> > return value of skb_checksum_help() and provide similar range of return values
>> > for skb_sctp_csum_help() (also known as skb_crc32c_csum_help()): this can
>> > help eventual future attempts to remove skb_warn_bad_offload(). It makes
>> > sense to make boolean the return value of skb_csum_hwoffload_help(),
>> > since we are using it only for non-GSO packets.
>
> the above statement is still valid after the body of the function changed. A
> very small thing: according to the kernel coding style, I should find a
> 'predicative' name for this function. Something like
>
> skb_can_resolve_partial_csum(),
>
> (which is terrible, I know)
>
> or similar / better.
>
> Please let me know if you think the code below is ok for you.
> Thank you in advance!
>
> regards,
>
> --
> davide
>
>
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2987,6 +2987,38 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
>         return skb;
>  }
>
> +static bool skb_csum_hwoffload_help(struct sk_buff *skb,
> +                                   netdev_features_t features)
> +{
> +       bool crc32c_csum_hwoff = !!(features & NETIF_F_SCTP_CRC);
> +       bool inet_csum_hwoff = !!(features & NETIF_F_CSUM_MASK);
> +       unsigned int offset = 0;
> +
> +       if (crc32c_csum_hwoff && inet_csum_hwoff)
> +               return true;
> +
> +       if (skb->encapsulation ||
> +           skb->csum_offset != offsetof(struct sctphdr, checksum))
> +               goto inet_csum;
> +
> +       switch (vlan_get_protocol(skb)) {
> +       case ntohs(ETH_P_IP):
> +               if (ip_hdr(skb)->protocol = IPPROTO_SCTP)
> +                       goto crc32c_csum;
> +               break;
> +       case ntohs(ETH_P_IPV6):
> +               if (ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL) =
> +                   IPPROTO_SCTP)
> +                       goto crc32c_csum;
> +               break;
> +       }
> +inet_csum:
> +       return inet_csum_hwoff ? true : !skb_checksum_help(skb);
> +
> +crc32c_csum:
> +       return crc32c_csum_hwoff ? true : !skb_crc32c_csum_help(skb);
> +}
> +
>  static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
>  {
>         netdev_features_t features;
> @@ -3022,8 +3054,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
>                         else
>                                 skb_set_transport_header(skb,
>                                                          skb_checksum_start_offset(skb));
> -                       if (!(features & NETIF_F_CSUM_MASK) &&
> -                           skb_checksum_help(skb))
> +                       if (skb_csum_hwoffload_help(skb, features) = false)
>                                 goto out_kfree_skb;
>                 }
>         }
>
>
>

[PATCH RFC net-next v3 0/7] improve CRC32c in the forwarding path

[Davide Caratti]

On Tue, 2017-03-07 at 10:06 -0800, Alexander Duyck wrote:
> You might even take this one step
> further.  You could convert crc32_csum into a 1 bit enum for now.
> Basically you would use 0 for 1's compliement csum, and 1 to represent
> a crc32c csum.  Then if we end up having to add another bit for
> something like FCoE in the future it would give us 4 possible checksum
> types instead of just giving us 1 with a bit mask.


On Sat, 2017-03-18 at 15:35 -0700, Tom Herbert wrote:
> Just create a non_ip_csum bit in skbuff.
> csum_bad can replaced with this I think. If the bit is set then more
> work can be done to differentiate between alternative checksums.

hello Alexander and Tom,

I refreshed the series including your suggestions.
Some followups are still possible:

* drivers that parse the packet header to correctly resolve CHECKSUM_PARTIAL
(e.g. ixgbe_tx_csum()) can benefit from skb->csum_algo savng some CPU cycles
(e.g. avoiding calling ip_hdr(skb)->protocol or ixgbe_ipv6_csum_is_sctp(skb)).

* drivers that call skb_checksum_help() to resolve CHECKSUM_PARTIAL can
call skb_crc32c_csum_help (or skb_csum_hwoffload_help(skb, 0)) to avoid
wrong CRC on SCTP packets.

thank you in advance for looking at this!
regards,

[PATCH RFC net-next v3 0/7] improve CRC32c in the forwarding path

[Davide Caratti]

On Tue, 2017-03-07 at 10:06 -0800, Alexander Duyck wrote:
> You might even take this one step
> further.  You could convert crc32_csum into a 1 bit enum for now.
> Basically you would use 0 for 1's compliement csum, and 1 to represent
> a crc32c csum.  Then if we end up having to add another bit for
> something like FCoE in the future it would give us 4 possible checksum
> types instead of just giving us 1 with a bit mask.


On Sat, 2017-03-18 at 15:35 -0700, Tom Herbert wrote:
> Just create a non_ip_csum bit in skbuff.
> csum_bad can replaced with this I think. If the bit is set then more
> work can be done to differentiate between alternative checksums.

hello Alexander and Tom,

I refreshed the series including your suggestions.
Some followups are still possible:

* drivers that parse the packet header to correctly resolve CHECKSUM_PARTIAL
(e.g. ixgbe_tx_csum()) can benefit from skb->csum_algo savng some CPU cycles
(e.g. avoiding calling ip_hdr(skb)->protocol or ixgbe_ipv6_csum_is_sctp(skb)).

* drivers that call skb_checksum_help() to resolve CHECKSUM_PARTIAL can
call skb_crc32c_csum_help (or skb_csum_hwoffload_help(skb, 0)) to avoid
wrong CRC on SCTP packets.

thank you in advance for looking at this!
regards,
--
davide

v3:
 * review documentation
 * include a fix for corrupted SCTP packets in openvswitch datapath
 * skb->crc32c_csum renamed in skb->csum_algo and converted to enum
 * deprecate skb->csum_bad to free one bit in struct sk_buff
 * use 'CRC32c csum' terminology everywhere

[PATCH RFC net-next v3 1/7] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
it can't be used in net core. Like it has been done previously with other
symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
to allow computation of crc32c checksum in net core after sctp.ko (and thus
libcrc32c) has been loaded.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h |  2 ++
 net/core/skbuff.c      | 24 ++++++++++++++++++++++++
 net/sctp/offload.c     |  7 +++++++
 3 files changed, 33 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index c776abd..8e9dd82 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3126,6 +3126,8 @@ struct skb_checksum_ops {
 	__wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
 };
 
+extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 9f78109..1a142aa 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2242,6 +2242,30 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
 }
 EXPORT_SYMBOL(skb_copy_and_csum_bits);
 
+static __wsum warn_crc32c_csum_update(const void *buff, int len, __wsum sum)
+{
+	net_warn_ratelimited(
+		"%s: attempt to compute crc32c without libcrc32c.ko\n",
+		__func__);
+	return 0;
+}
+
+static __wsum warn_crc32c_csum_combine(__wsum csum, __wsum csum2,
+				       int offset, int len)
+{
+	net_warn_ratelimited(
+		"%s: attempt to compute crc32c without libcrc32c.ko\n",
+		__func__);
+	return 0;
+}
+
+const struct skb_checksum_ops *crc32c_csum_stub __read_mostly =
+	&(struct skb_checksum_ops) {
+	.update  = warn_crc32c_csum_update,
+	.combine = warn_crc32c_csum_combine,
+};
+EXPORT_SYMBOL(crc32c_csum_stub);
+
  /**
  *	skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
  *	@from: source buffer
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 4f5a2b5..378f462 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
 	},
 };
 
+static const struct skb_checksum_ops *crc32c_csum_ops __read_mostly =
+	&(struct skb_checksum_ops) {
+	.update  = sctp_csum_update,
+	.combine = sctp_csum_combine,
+};
+
 int __init sctp_offload_init(void)
 {
 	int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
 	if (ret)
 		goto ipv4;
 
+	crc32c_csum_stub = crc32c_csum_ops;
 	return ret;
 
 ipv4:
-- 
2.7.4

[PATCH RFC net-next v3 1/7] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
it can't be used in net core. Like it has been done previously with other
symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
to allow computation of crc32c checksum in net core after sctp.ko (and thus
libcrc32c) has been loaded.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h |  2 ++
 net/core/skbuff.c      | 24 ++++++++++++++++++++++++
 net/sctp/offload.c     |  7 +++++++
 3 files changed, 33 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index c776abd..8e9dd82 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3126,6 +3126,8 @@ struct skb_checksum_ops {
 	__wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
 };
 
+extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 9f78109..1a142aa 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2242,6 +2242,30 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
 }
 EXPORT_SYMBOL(skb_copy_and_csum_bits);
 
+static __wsum warn_crc32c_csum_update(const void *buff, int len, __wsum sum)
+{
+	net_warn_ratelimited(
+		"%s: attempt to compute crc32c without libcrc32c.ko\n",
+		__func__);
+	return 0;
+}
+
+static __wsum warn_crc32c_csum_combine(__wsum csum, __wsum csum2,
+				       int offset, int len)
+{
+	net_warn_ratelimited(
+		"%s: attempt to compute crc32c without libcrc32c.ko\n",
+		__func__);
+	return 0;
+}
+
+const struct skb_checksum_ops *crc32c_csum_stub __read_mostly +	&(struct skb_checksum_ops) {
+	.update  = warn_crc32c_csum_update,
+	.combine = warn_crc32c_csum_combine,
+};
+EXPORT_SYMBOL(crc32c_csum_stub);
+
  /**
  *	skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
  *	@from: source buffer
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 4f5a2b5..378f462 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
 	},
 };
 
+static const struct skb_checksum_ops *crc32c_csum_ops __read_mostly +	&(struct skb_checksum_ops) {
+	.update  = sctp_csum_update,
+	.combine = sctp_csum_combine,
+};
+
 int __init sctp_offload_init(void)
 {
 	int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
 	if (ret)
 		goto ipv4;
 
+	crc32c_csum_stub = crc32c_csum_ops;
 	return ret;
 
 ipv4:
-- 
2.7.4

[PATCH RFC net-next v3 2/7] net: introduce skb_crc32c_csum_help

[Davide Caratti]

skb_crc32c_csum_help is like skb_checksum_help, but it is designed for
checksumming SCTP packets using crc32c (see RFC3309), provided that
libcrc32c.ko has been loaded before. In case libcrc32c is not loaded,
invoking skb_crc32c_csum_help on a skb results in one the following
printouts:

warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.ko
warn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.ko

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/netdevice.h |  1 +
 include/linux/skbuff.h    |  3 ++-
 net/core/dev.c            | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index cc07c3b..e86b50e 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3899,6 +3899,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
+int skb_crc32c_csum_help(struct sk_buff *skb);
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 8e9dd82..d18b31d 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -193,7 +193,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
  *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
diff --git a/net/core/dev.c b/net/core/dev.c
index ef9fe60e..7d59cba 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -140,6 +140,7 @@
 #include <linux/hrtimer.h>
 #include <linux/netfilter_ingress.h>
 #include <linux/crash_dump.h>
+#include <linux/sctp.h>
 
 #include "net-sysfs.h"
 
@@ -2606,6 +2607,45 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_crc32c_csum_help(struct sk_buff *skb)
+{
+	__le32 crc32c_csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		goto out;
+
+	if (unlikely(skb_is_gso(skb)))
+		goto out;
+
+	/* Before computing a checksum, we should make sure no frag could
+	 * be modified by an external entity : checksum could be wrong.
+	 */
+	if (unlikely(skb_has_shared_frag(skb))) {
+		ret = __skb_linearize(skb);
+		if (ret)
+			goto out;
+	}
+
+	offset = skb_checksum_start_offset(skb);
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+						  skb->len - offset, ~(__u32)0,
+						  crc32c_csum_stub));
+	offset += offsetof(struct sctphdr, checksum);
+	BUG_ON(offset >= skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4

[PATCH RFC net-next v3 2/7] net: introduce skb_crc32c_csum_help

[Davide Caratti]

skb_crc32c_csum_help is like skb_checksum_help, but it is designed for
checksumming SCTP packets using crc32c (see RFC3309), provided that
libcrc32c.ko has been loaded before. In case libcrc32c is not loaded,
invoking skb_crc32c_csum_help on a skb results in one the following
printouts:

warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.ko
warn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.ko

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/netdevice.h |  1 +
 include/linux/skbuff.h    |  3 ++-
 net/core/dev.c            | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index cc07c3b..e86b50e 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3899,6 +3899,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
+int skb_crc32c_csum_help(struct sk_buff *skb);
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 8e9dd82..d18b31d 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -193,7 +193,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
  *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
diff --git a/net/core/dev.c b/net/core/dev.c
index ef9fe60e..7d59cba 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -140,6 +140,7 @@
 #include <linux/hrtimer.h>
 #include <linux/netfilter_ingress.h>
 #include <linux/crash_dump.h>
+#include <linux/sctp.h>
 
 #include "net-sysfs.h"
 
@@ -2606,6 +2607,45 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_crc32c_csum_help(struct sk_buff *skb)
+{
+	__le32 crc32c_csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		goto out;
+
+	if (unlikely(skb_is_gso(skb)))
+		goto out;
+
+	/* Before computing a checksum, we should make sure no frag could
+	 * be modified by an external entity : checksum could be wrong.
+	 */
+	if (unlikely(skb_has_shared_frag(skb))) {
+		ret = __skb_linearize(skb);
+		if (ret)
+			goto out;
+	}
+
+	offset = skb_checksum_start_offset(skb);
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+						  skb->len - offset, ~(__u32)0,
+						  crc32c_csum_stub));
+	offset += offsetof(struct sctphdr, checksum);
+	BUG_ON(offset >= skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4

[PATCH RFC net-next v3 3/7] sk_buff: remove support for csum_bad in sk_buff

[Davide Caratti]

This bit was introduced with 5a21232983aa ("net: Support for csum_bad in
skbuff") to reduce the stack workload when processing RX packets carrying
a wrong Internet Checksum. Up to now, only one driver (besides GRO core)
are setting it.
The test on NAPI_GRO_CB(skb)->flush in dev_gro_receive() is now done
before the test on same_flow, to preserve behavior in case of wrong
checksum.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
 include/linux/netdevice.h                        |  4 +---
 include/linux/skbuff.h                           | 23 ++---------------------
 net/bridge/netfilter/nft_reject_bridge.c         |  5 +----
 net/core/dev.c                                   |  8 +++-----
 net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
 net/ipv6/netfilter/nf_reject_ipv6.c              |  3 ---
 7 files changed, 9 insertions(+), 38 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
index 0358e607..ec5579f 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
@@ -222,7 +222,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget)
 		skb->protocol = eth_type_trans(skb, ndev);
 		if (unlikely(buff->is_cso_err)) {
 			++self->stats.rx.errors;
-			__skb_mark_checksum_bad(skb);
+			skb->ip_summed = CHECKSUM_NONE;
 		} else {
 			if (buff->is_ip_cso) {
 				__skb_incr_checksum_unnecessary(skb);
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index e86b50e..960f6ab 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2547,9 +2547,7 @@ static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)
 	if (__skb_gro_checksum_validate_needed(skb, zero_okay, check))	\
 		__ret = __skb_gro_checksum_validate_complete(skb,	\
 				compute_pseudo(skb, proto));		\
-	if (__ret)							\
-		__skb_mark_checksum_bad(skb);				\
-	else								\
+	if (!__ret)							\
 		skb_gro_incr_csum_unnecessary(skb);			\
 	__ret;								\
 })
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d18b31d..aaf1072 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -742,7 +742,7 @@ struct sk_buff {
 	__u8			csum_valid:1;
 	__u8			csum_complete_sw:1;
 	__u8			csum_level:2;
-	__u8			csum_bad:1;
+	__u8			__unused:1; /* one bit hole */
 
 	__u8			dst_pending_confirm:1;
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
@@ -3386,21 +3386,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb)
 	}
 }
 
-static inline void __skb_mark_checksum_bad(struct sk_buff *skb)
-{
-	/* Mark current checksum as bad (typically called from GRO
-	 * path). In the case that ip_summed is CHECKSUM_NONE
-	 * this must be the first checksum encountered in the packet.
-	 * When ip_summed is CHECKSUM_UNNECESSARY, this is the first
-	 * checksum after the last one validated. For UDP, a zero
-	 * checksum can not be marked as bad.
-	 */
-
-	if (skb->ip_summed == CHECKSUM_NONE ||
-	    skb->ip_summed == CHECKSUM_UNNECESSARY)
-		skb->csum_bad = 1;
-}
-
 /* Check if we need to perform checksum complete validation.
  *
  * Returns true if checksum complete is needed, false otherwise
@@ -3454,9 +3439,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb,
 			skb->csum_valid = 1;
 			return 0;
 		}
-	} else if (skb->csum_bad) {
-		/* ip_summed == CHECKSUM_NONE in this case */
-		return (__force __sum16)1;
 	}
 
 	skb->csum = psum;
@@ -3516,8 +3498,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto)
 
 static inline bool __skb_checksum_convert_check(struct sk_buff *skb)
 {
-	return (skb->ip_summed == CHECKSUM_NONE &&
-		skb->csum_valid && !skb->csum_bad);
+	return (skb->ip_summed == CHECKSUM_NONE && skb->csum_valid);
 }
 
 static inline void __skb_checksum_convert(struct sk_buff *skb,
diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
index 346ef6b..c16dd3a 100644
--- a/net/bridge/netfilter/nft_reject_bridge.c
+++ b/net/bridge/netfilter/nft_reject_bridge.c
@@ -111,7 +111,7 @@ static void nft_reject_br_send_v4_unreach(struct net *net,
 	__wsum csum;
 	u8 proto;
 
-	if (oldskb->csum_bad || !nft_bridge_iphdr_validate(oldskb))
+	if (!nft_bridge_iphdr_validate(oldskb))
 		return;
 
 	/* IP header checks: fragment. */
@@ -226,9 +226,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)
 	__be16 fo;
 	u8 proto = ip6h->nexthdr;
 
-	if (skb->csum_bad)
-		return false;
-
 	if (skb_csum_unnecessary(skb))
 		return true;
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 7d59cba..91ba01a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4533,9 +4533,6 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 	if (!(skb->dev->features & NETIF_F_GRO))
 		goto normal;
 
-	if (skb->csum_bad)
-		goto normal;
-
 	gro_list_prepare(napi, skb);
 
 	rcu_read_lock();
@@ -4595,11 +4592,12 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 		napi->gro_count--;
 	}
 
+	if (NAPI_GRO_CB(skb)->flush)
+		goto normal;
+
 	if (same_flow)
 		goto ok;
 
-	if (NAPI_GRO_CB(skb)->flush)
-		goto normal;
 
 	if (unlikely(napi->gro_count >= MAX_GRO_SKBS)) {
 		struct sk_buff *nskb = napi->gro_list;
diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c
index 7cd8d0d..6f8d9e5 100644
--- a/net/ipv4/netfilter/nf_reject_ipv4.c
+++ b/net/ipv4/netfilter/nf_reject_ipv4.c
@@ -172,7 +172,7 @@ void nf_send_unreach(struct sk_buff *skb_in, int code, int hook)
 	struct iphdr *iph = ip_hdr(skb_in);
 	u8 proto;
 
-	if (skb_in->csum_bad || iph->frag_off & htons(IP_OFFSET))
+	if (iph->frag_off & htons(IP_OFFSET))
 		return;
 
 	if (skb_csum_unnecessary(skb_in)) {
diff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c
index eedee5d..f63b18e 100644
--- a/net/ipv6/netfilter/nf_reject_ipv6.c
+++ b/net/ipv6/netfilter/nf_reject_ipv6.c
@@ -220,9 +220,6 @@ static bool reject6_csum_ok(struct sk_buff *skb, int hook)
 	__be16 fo;
 	u8 proto;
 
-	if (skb->csum_bad)
-		return false;
-
 	if (skb_csum_unnecessary(skb))
 		return true;
 
-- 
2.7.4

[PATCH RFC net-next v3 3/7] sk_buff: remove support for csum_bad in sk_buff

[Davide Caratti]

This bit was introduced with 5a21232983aa ("net: Support for csum_bad in
skbuff") to reduce the stack workload when processing RX packets carrying
a wrong Internet Checksum. Up to now, only one driver (besides GRO core)
are setting it.
The test on NAPI_GRO_CB(skb)->flush in dev_gro_receive() is now done
before the test on same_flow, to preserve behavior in case of wrong
checksum.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
 include/linux/netdevice.h                        |  4 +---
 include/linux/skbuff.h                           | 23 ++---------------------
 net/bridge/netfilter/nft_reject_bridge.c         |  5 +----
 net/core/dev.c                                   |  8 +++-----
 net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
 net/ipv6/netfilter/nf_reject_ipv6.c              |  3 ---
 7 files changed, 9 insertions(+), 38 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
index 0358e607..ec5579f 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
@@ -222,7 +222,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget)
 		skb->protocol = eth_type_trans(skb, ndev);
 		if (unlikely(buff->is_cso_err)) {
 			++self->stats.rx.errors;
-			__skb_mark_checksum_bad(skb);
+			skb->ip_summed = CHECKSUM_NONE;
 		} else {
 			if (buff->is_ip_cso) {
 				__skb_incr_checksum_unnecessary(skb);
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index e86b50e..960f6ab 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2547,9 +2547,7 @@ static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)
 	if (__skb_gro_checksum_validate_needed(skb, zero_okay, check))	\
 		__ret = __skb_gro_checksum_validate_complete(skb,	\
 				compute_pseudo(skb, proto));		\
-	if (__ret)							\
-		__skb_mark_checksum_bad(skb);				\
-	else								\
+	if (!__ret)							\
 		skb_gro_incr_csum_unnecessary(skb);			\
 	__ret;								\
 })
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d18b31d..aaf1072 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -742,7 +742,7 @@ struct sk_buff {
 	__u8			csum_valid:1;
 	__u8			csum_complete_sw:1;
 	__u8			csum_level:2;
-	__u8			csum_bad:1;
+	__u8			__unused:1; /* one bit hole */
 
 	__u8			dst_pending_confirm:1;
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
@@ -3386,21 +3386,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb)
 	}
 }
 
-static inline void __skb_mark_checksum_bad(struct sk_buff *skb)
-{
-	/* Mark current checksum as bad (typically called from GRO
-	 * path). In the case that ip_summed is CHECKSUM_NONE
-	 * this must be the first checksum encountered in the packet.
-	 * When ip_summed is CHECKSUM_UNNECESSARY, this is the first
-	 * checksum after the last one validated. For UDP, a zero
-	 * checksum can not be marked as bad.
-	 */
-
-	if (skb->ip_summed = CHECKSUM_NONE ||
-	    skb->ip_summed = CHECKSUM_UNNECESSARY)
-		skb->csum_bad = 1;
-}
-
 /* Check if we need to perform checksum complete validation.
  *
  * Returns true if checksum complete is needed, false otherwise
@@ -3454,9 +3439,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb,
 			skb->csum_valid = 1;
 			return 0;
 		}
-	} else if (skb->csum_bad) {
-		/* ip_summed = CHECKSUM_NONE in this case */
-		return (__force __sum16)1;
 	}
 
 	skb->csum = psum;
@@ -3516,8 +3498,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto)
 
 static inline bool __skb_checksum_convert_check(struct sk_buff *skb)
 {
-	return (skb->ip_summed = CHECKSUM_NONE &&
-		skb->csum_valid && !skb->csum_bad);
+	return (skb->ip_summed = CHECKSUM_NONE && skb->csum_valid);
 }
 
 static inline void __skb_checksum_convert(struct sk_buff *skb,
diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
index 346ef6b..c16dd3a 100644
--- a/net/bridge/netfilter/nft_reject_bridge.c
+++ b/net/bridge/netfilter/nft_reject_bridge.c
@@ -111,7 +111,7 @@ static void nft_reject_br_send_v4_unreach(struct net *net,
 	__wsum csum;
 	u8 proto;
 
-	if (oldskb->csum_bad || !nft_bridge_iphdr_validate(oldskb))
+	if (!nft_bridge_iphdr_validate(oldskb))
 		return;
 
 	/* IP header checks: fragment. */
@@ -226,9 +226,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)
 	__be16 fo;
 	u8 proto = ip6h->nexthdr;
 
-	if (skb->csum_bad)
-		return false;
-
 	if (skb_csum_unnecessary(skb))
 		return true;
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 7d59cba..91ba01a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4533,9 +4533,6 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 	if (!(skb->dev->features & NETIF_F_GRO))
 		goto normal;
 
-	if (skb->csum_bad)
-		goto normal;
-
 	gro_list_prepare(napi, skb);
 
 	rcu_read_lock();
@@ -4595,11 +4592,12 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 		napi->gro_count--;
 	}
 
+	if (NAPI_GRO_CB(skb)->flush)
+		goto normal;
+
 	if (same_flow)
 		goto ok;
 
-	if (NAPI_GRO_CB(skb)->flush)
-		goto normal;
 
 	if (unlikely(napi->gro_count >= MAX_GRO_SKBS)) {
 		struct sk_buff *nskb = napi->gro_list;
diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c
index 7cd8d0d..6f8d9e5 100644
--- a/net/ipv4/netfilter/nf_reject_ipv4.c
+++ b/net/ipv4/netfilter/nf_reject_ipv4.c
@@ -172,7 +172,7 @@ void nf_send_unreach(struct sk_buff *skb_in, int code, int hook)
 	struct iphdr *iph = ip_hdr(skb_in);
 	u8 proto;
 
-	if (skb_in->csum_bad || iph->frag_off & htons(IP_OFFSET))
+	if (iph->frag_off & htons(IP_OFFSET))
 		return;
 
 	if (skb_csum_unnecessary(skb_in)) {
diff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c
index eedee5d..f63b18e 100644
--- a/net/ipv6/netfilter/nf_reject_ipv6.c
+++ b/net/ipv6/netfilter/nf_reject_ipv6.c
@@ -220,9 +220,6 @@ static bool reject6_csum_ok(struct sk_buff *skb, int hook)
 	__be16 fo;
 	u8 proto;
 
-	if (skb->csum_bad)
-		return false;
-
 	if (skb_csum_unnecessary(skb))
 		return true;
 
-- 
2.7.4

[PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Davide Caratti]

skb->csum_algo carries the indication on which algorithm is needed to
compute checksum on skb in the transmit path, when skb->ip_summed is
equal to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c
hasn't been yet written in L4 header, skb->csum_algo is assigned to
CRC32C_CHECKSUM. In any other case, skb->csum_algo is set to
INTERNET_CHECKSUM.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h                | 28 ++++++++++++++++++++--------
 net/core/dev.c                        |  2 +-
 net/netfilter/ipvs/ip_vs_proto_sctp.c |  2 +-
 net/netfilter/nf_nat_proto_sctp.c     |  2 +-
 net/sched/act_csum.c                  |  2 +-
 net/sctp/offload.c                    |  2 +-
 net/sctp/output.c                     |  3 ++-
 7 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index aaf1072..527be47 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -189,12 +189,13 @@
  *
  *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
  *     offloading the SCTP CRC in a packet. To perform this offload the stack
- *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
- *     accordingly. Note the there is no indication in the skbuff that the
- *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
- *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers; in
- *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
+ *     will set set csum_start and csum_offset accordingly, set ip_summed to
+ *     CHECKSUM_PARTIAL and set csum_algo to CRC32C_CHECKSUM, to provide an
+ *     indication in the skbuff that the CHECKSUM_PARTIAL refers to CRC32c.
+ *     A driver that supports both IP checksum offload and SCTP CRC32c offload
+ *     must verify which offload is configured for a packet by testing the
+ *     value of skb->csum_algo; skb_crc32c_csum_help is provided to resolve
+ *     CHECKSUM_PARTIAL on skbs where csum_algo is CRC32C_CHECKSUM.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
@@ -614,6 +615,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,
  *	@wifi_acked_valid: wifi_acked was set
  *	@wifi_acked: whether frame was acked on wifi or not
  *	@no_fcs:  Request NIC to treat last 4 bytes as Ethernet FCS
+ *	@csum_algo: algorithm used to compute checksum
  *	@dst_pending_confirm: need to confirm neighbour
   *	@napi_id: id of the NAPI struct this skb came from
  *	@secmark: security marking
@@ -742,8 +744,10 @@ struct sk_buff {
 	__u8			csum_valid:1;
 	__u8			csum_complete_sw:1;
 	__u8			csum_level:2;
-	__u8			__unused:1; /* one bit hole */
-
+	enum {
+		INTERNET_CHECKSUM = 0,
+		CRC32C_CHECKSUM,
+	}			csum_algo:1;
 	__u8			dst_pending_confirm:1;
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
 	__u8			ndisc_nodetype:2;
@@ -3129,6 +3133,14 @@ struct skb_checksum_ops {
 
 extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
 
+static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
+					   const u8 ip_summed)
+{
+	skb->csum_algo = ip_summed == CHECKSUM_PARTIAL ? CRC32C_CHECKSUM :
+		INTERNET_CHECKSUM;
+	skb->ip_summed = ip_summed;
+}
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/dev.c b/net/core/dev.c
index 91ba01a..c6a4281 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2641,7 +2641,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb)
 			goto out;
 	}
 	*(__le32 *)(skb->data + offset) = crc32c_csum;
-	skb->ip_summed = CHECKSUM_NONE;
+	skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
 out:
 	return ret;
 }
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index 56f8e4b..8800bf7 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
 			  unsigned int sctphoff)
 {
 	sctph->checksum = sctp_compute_cksum(skb, sctphoff);
-	skb->ip_summed = CHECKSUM_UNNECESSARY;
+	skb_set_crc32c_ipsummed(skb, CHECKSUM_UNNECESSARY);
 }
 
 static int
diff --git a/net/netfilter/nf_nat_proto_sctp.c b/net/netfilter/nf_nat_proto_sctp.c
index 804e8a0..82a7c4c 100644
--- a/net/netfilter/nf_nat_proto_sctp.c
+++ b/net/netfilter/nf_nat_proto_sctp.c
@@ -60,7 +60,7 @@ sctp_manip_pkt(struct sk_buff *skb,
 
 	if (skb->ip_summed != CHECKSUM_PARTIAL) {
 		hdr->checksum = sctp_compute_cksum(skb, hdroff);
-		skb->ip_summed = CHECKSUM_NONE;
+		skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
 	}
 
 	return true;
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index 6c319a4..6e7e862 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -349,7 +349,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
 
 	sctph->checksum = sctp_compute_cksum(skb,
 					     skb_network_offset(skb) + ihl);
-	skb->ip_summed = CHECKSUM_NONE;
+	skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
 
 	return 1;
 }
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 378f462..4b98339 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -34,7 +34,7 @@
 
 static __le32 sctp_gso_make_checksum(struct sk_buff *skb)
 {
-	skb->ip_summed = CHECKSUM_NONE;
+	skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
 	return sctp_compute_cksum(skb, skb_transport_offset(skb));
 }
 
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 1224421..386cbd8 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -524,10 +524,11 @@ static int sctp_packet_pack(struct sctp_packet *packet,
 		struct sctphdr *sh =
 			(struct sctphdr *)skb_transport_header(head);
 
+		skb_set_crc32c_ipsummed(head, CHECKSUM_NONE);
 		sh->checksum = sctp_compute_cksum(head, 0);
 	} else {
 chksum:
-		head->ip_summed = CHECKSUM_PARTIAL;
+		skb_set_crc32c_ipsummed(head, CHECKSUM_PARTIAL);
 		head->csum_start = skb_transport_header(head) - head->head;
 		head->csum_offset = offsetof(struct sctphdr, checksum);
 	}
-- 
2.7.4

[PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Davide Caratti]

skb->csum_algo carries the indication on which algorithm is needed to
compute checksum on skb in the transmit path, when skb->ip_summed is
equal to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c
hasn't been yet written in L4 header, skb->csum_algo is assigned to
CRC32C_CHECKSUM. In any other case, skb->csum_algo is set to
INTERNET_CHECKSUM.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h                | 28 ++++++++++++++++++++--------
 net/core/dev.c                        |  2 +-
 net/netfilter/ipvs/ip_vs_proto_sctp.c |  2 +-
 net/netfilter/nf_nat_proto_sctp.c     |  2 +-
 net/sched/act_csum.c                  |  2 +-
 net/sctp/offload.c                    |  2 +-
 net/sctp/output.c                     |  3 ++-
 7 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index aaf1072..527be47 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -189,12 +189,13 @@
  *
  *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
  *     offloading the SCTP CRC in a packet. To perform this offload the stack
- *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
- *     accordingly. Note the there is no indication in the skbuff that the
- *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
- *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers; in
- *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
+ *     will set set csum_start and csum_offset accordingly, set ip_summed to
+ *     CHECKSUM_PARTIAL and set csum_algo to CRC32C_CHECKSUM, to provide an
+ *     indication in the skbuff that the CHECKSUM_PARTIAL refers to CRC32c.
+ *     A driver that supports both IP checksum offload and SCTP CRC32c offload
+ *     must verify which offload is configured for a packet by testing the
+ *     value of skb->csum_algo; skb_crc32c_csum_help is provided to resolve
+ *     CHECKSUM_PARTIAL on skbs where csum_algo is CRC32C_CHECKSUM.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
@@ -614,6 +615,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,
  *	@wifi_acked_valid: wifi_acked was set
  *	@wifi_acked: whether frame was acked on wifi or not
  *	@no_fcs:  Request NIC to treat last 4 bytes as Ethernet FCS
+ *	@csum_algo: algorithm used to compute checksum
  *	@dst_pending_confirm: need to confirm neighbour
   *	@napi_id: id of the NAPI struct this skb came from
  *	@secmark: security marking
@@ -742,8 +744,10 @@ struct sk_buff {
 	__u8			csum_valid:1;
 	__u8			csum_complete_sw:1;
 	__u8			csum_level:2;
-	__u8			__unused:1; /* one bit hole */
-
+	enum {
+		INTERNET_CHECKSUM = 0,
+		CRC32C_CHECKSUM,
+	}			csum_algo:1;
 	__u8			dst_pending_confirm:1;
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
 	__u8			ndisc_nodetype:2;
@@ -3129,6 +3133,14 @@ struct skb_checksum_ops {
 
 extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
 
+static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
+					   const u8 ip_summed)
+{
+	skb->csum_algo = ip_summed = CHECKSUM_PARTIAL ? CRC32C_CHECKSUM :
+		INTERNET_CHECKSUM;
+	skb->ip_summed = ip_summed;
+}
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/dev.c b/net/core/dev.c
index 91ba01a..c6a4281 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2641,7 +2641,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb)
 			goto out;
 	}
 	*(__le32 *)(skb->data + offset) = crc32c_csum;
-	skb->ip_summed = CHECKSUM_NONE;
+	skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
 out:
 	return ret;
 }
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index 56f8e4b..8800bf7 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
 			  unsigned int sctphoff)
 {
 	sctph->checksum = sctp_compute_cksum(skb, sctphoff);
-	skb->ip_summed = CHECKSUM_UNNECESSARY;
+	skb_set_crc32c_ipsummed(skb, CHECKSUM_UNNECESSARY);
 }
 
 static int
diff --git a/net/netfilter/nf_nat_proto_sctp.c b/net/netfilter/nf_nat_proto_sctp.c
index 804e8a0..82a7c4c 100644
--- a/net/netfilter/nf_nat_proto_sctp.c
+++ b/net/netfilter/nf_nat_proto_sctp.c
@@ -60,7 +60,7 @@ sctp_manip_pkt(struct sk_buff *skb,
 
 	if (skb->ip_summed != CHECKSUM_PARTIAL) {
 		hdr->checksum = sctp_compute_cksum(skb, hdroff);
-		skb->ip_summed = CHECKSUM_NONE;
+		skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
 	}
 
 	return true;
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index 6c319a4..6e7e862 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -349,7 +349,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
 
 	sctph->checksum = sctp_compute_cksum(skb,
 					     skb_network_offset(skb) + ihl);
-	skb->ip_summed = CHECKSUM_NONE;
+	skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
 
 	return 1;
 }
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 378f462..4b98339 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -34,7 +34,7 @@
 
 static __le32 sctp_gso_make_checksum(struct sk_buff *skb)
 {
-	skb->ip_summed = CHECKSUM_NONE;
+	skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
 	return sctp_compute_cksum(skb, skb_transport_offset(skb));
 }
 
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 1224421..386cbd8 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -524,10 +524,11 @@ static int sctp_packet_pack(struct sctp_packet *packet,
 		struct sctphdr *sh  			(struct sctphdr *)skb_transport_header(head);
 
+		skb_set_crc32c_ipsummed(head, CHECKSUM_NONE);
 		sh->checksum = sctp_compute_cksum(head, 0);
 	} else {
 chksum:
-		head->ip_summed = CHECKSUM_PARTIAL;
+		skb_set_crc32c_ipsummed(head, CHECKSUM_PARTIAL);
 		head->csum_start = skb_transport_header(head) - head->head;
 		head->csum_offset = offsetof(struct sctphdr, checksum);
 	}
-- 
2.7.4

Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Tom Herbert]

On Fri, Apr 7, 2017 at 7:16 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> skb->csum_algo carries the indication on which algorithm is needed to
> compute checksum on skb in the transmit path, when skb->ip_summed is
> equal to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c
> hasn't been yet written in L4 header, skb->csum_algo is assigned to
> CRC32C_CHECKSUM. In any other case, skb->csum_algo is set to
> INTERNET_CHECKSUM.
>
> Suggested-by: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h                | 28 ++++++++++++++++++++--------
>  net/core/dev.c                        |  2 +-
>  net/netfilter/ipvs/ip_vs_proto_sctp.c |  2 +-
>  net/netfilter/nf_nat_proto_sctp.c     |  2 +-
>  net/sched/act_csum.c                  |  2 +-
>  net/sctp/offload.c                    |  2 +-
>  net/sctp/output.c                     |  3 ++-
>  7 files changed, 27 insertions(+), 14 deletions(-)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index aaf1072..527be47 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -189,12 +189,13 @@
>   *
>   *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
>   *     offloading the SCTP CRC in a packet. To perform this offload the stack
> - *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
> - *     accordingly. Note the there is no indication in the skbuff that the
> - *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
> - *     both IP checksum offload and SCTP CRC offload must verify which offload
> - *     is configured for a packet presumably by inspecting packet headers; in
> - *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
> + *     will set set csum_start and csum_offset accordingly, set ip_summed to
> + *     CHECKSUM_PARTIAL and set csum_algo to CRC32C_CHECKSUM, to provide an
> + *     indication in the skbuff that the CHECKSUM_PARTIAL refers to CRC32c.
> + *     A driver that supports both IP checksum offload and SCTP CRC32c offload
> + *     must verify which offload is configured for a packet by testing the
> + *     value of skb->csum_algo; skb_crc32c_csum_help is provided to resolve
> + *     CHECKSUM_PARTIAL on skbs where csum_algo is CRC32C_CHECKSUM.
>   *
>   *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
>   *     offloading the FCOE CRC in a packet. To perform this offload the stack
> @@ -614,6 +615,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,
>   *     @wifi_acked_valid: wifi_acked was set
>   *     @wifi_acked: whether frame was acked on wifi or not
>   *     @no_fcs:  Request NIC to treat last 4 bytes as Ethernet FCS
> + *     @csum_algo: algorithm used to compute checksum
>   *     @dst_pending_confirm: need to confirm neighbour
>    *    @napi_id: id of the NAPI struct this skb came from
>   *     @secmark: security marking
> @@ -742,8 +744,10 @@ struct sk_buff {
>         __u8                    csum_valid:1;
>         __u8                    csum_complete_sw:1;
>         __u8                    csum_level:2;
> -       __u8                    __unused:1; /* one bit hole */
> -
> +       enum {
> +               INTERNET_CHECKSUM = 0,
> +               CRC32C_CHECKSUM,
> +       }                       csum_algo:1;

I am worried this opens the door to a new open ended functionality
that will be rarely used in practice. Checksum offload is pervasive,
CRC offload is still a very narrow use case. Adding yet more
CRC/checksum variants will need more bits. It may be sufficient for
now just to make this a single bit which indicates "ones' checksum" or
indicates "other". In this case of "other" we need some analysis so
determine which checksum it is, this might be something that flow
dissector could support.

>         __u8                    dst_pending_confirm:1;
>  #ifdef CONFIG_IPV6_NDISC_NODETYPE
>         __u8                    ndisc_nodetype:2;
> @@ -3129,6 +3133,14 @@ struct skb_checksum_ops {
>
>  extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
>
> +static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
> +                                          const u8 ip_summed)
> +{
> +       skb->csum_algo = ip_summed == CHECKSUM_PARTIAL ? CRC32C_CHECKSUM :
> +               INTERNET_CHECKSUM;
> +       skb->ip_summed = ip_summed;

This seems odd to me. skb->csum_algo and skb->ip_summed always end up
having the same value.

> +}
> +
>  __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
>                       __wsum csum, const struct skb_checksum_ops *ops);
>  __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 91ba01a..c6a4281 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2641,7 +2641,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb)
>                         goto out;
>         }
>         *(__le32 *)(skb->data + offset) = crc32c_csum;
> -       skb->ip_summed = CHECKSUM_NONE;
> +       skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
>  out:
>         return ret;
>  }
> diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> index 56f8e4b..8800bf7 100644
> --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
> +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> @@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
>                           unsigned int sctphoff)
>  {
>         sctph->checksum = sctp_compute_cksum(skb, sctphoff);
> -       skb->ip_summed = CHECKSUM_UNNECESSARY;
> +       skb_set_crc32c_ipsummed(skb, CHECKSUM_UNNECESSARY);

The old code is better. CHECKSUM_UNNECESSARY already applies to non IP
checksums. There is nothing special about crc32 in this regard and
skb->csum_algo should only be valid when skb->ip_summed ==
CHECKSUM_PARTIAL so no need to set it here. This point should also be
in documentation.

>  }
>
>  static int
> diff --git a/net/netfilter/nf_nat_proto_sctp.c b/net/netfilter/nf_nat_proto_sctp.c
> index 804e8a0..82a7c4c 100644
> --- a/net/netfilter/nf_nat_proto_sctp.c
> +++ b/net/netfilter/nf_nat_proto_sctp.c
> @@ -60,7 +60,7 @@ sctp_manip_pkt(struct sk_buff *skb,
>
>         if (skb->ip_summed != CHECKSUM_PARTIAL) {
>                 hdr->checksum = sctp_compute_cksum(skb, hdroff);
> -               skb->ip_summed = CHECKSUM_NONE;
> +               skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
>         }
>
>         return true;
> diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
> index 6c319a4..6e7e862 100644
> --- a/net/sched/act_csum.c
> +++ b/net/sched/act_csum.c
> @@ -349,7 +349,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
>
>         sctph->checksum = sctp_compute_cksum(skb,
>                                              skb_network_offset(skb) + ihl);
> -       skb->ip_summed = CHECKSUM_NONE;
> +       skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
>
>         return 1;
>  }
> diff --git a/net/sctp/offload.c b/net/sctp/offload.c
> index 378f462..4b98339 100644
> --- a/net/sctp/offload.c
> +++ b/net/sctp/offload.c
> @@ -34,7 +34,7 @@
>
>  static __le32 sctp_gso_make_checksum(struct sk_buff *skb)
>  {
> -       skb->ip_summed = CHECKSUM_NONE;
> +       skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
>         return sctp_compute_cksum(skb, skb_transport_offset(skb));
>  }
>
> diff --git a/net/sctp/output.c b/net/sctp/output.c
> index 1224421..386cbd8 100644
> --- a/net/sctp/output.c
> +++ b/net/sctp/output.c
> @@ -524,10 +524,11 @@ static int sctp_packet_pack(struct sctp_packet *packet,
>                 struct sctphdr *sh =
>                         (struct sctphdr *)skb_transport_header(head);
>
> +               skb_set_crc32c_ipsummed(head, CHECKSUM_NONE);
>                 sh->checksum = sctp_compute_cksum(head, 0);
>         } else {
>  chksum:
> -               head->ip_summed = CHECKSUM_PARTIAL;
> +               skb_set_crc32c_ipsummed(head, CHECKSUM_PARTIAL);
>                 head->csum_start = skb_transport_header(head) - head->head;
>                 head->csum_offset = offsetof(struct sctphdr, checksum);
>         }
> --
> 2.7.4
>

Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Tom Herbert]

On Fri, Apr 7, 2017 at 7:16 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> skb->csum_algo carries the indication on which algorithm is needed to
> compute checksum on skb in the transmit path, when skb->ip_summed is
> equal to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c
> hasn't been yet written in L4 header, skb->csum_algo is assigned to
> CRC32C_CHECKSUM. In any other case, skb->csum_algo is set to
> INTERNET_CHECKSUM.
>
> Suggested-by: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h                | 28 ++++++++++++++++++++--------
>  net/core/dev.c                        |  2 +-
>  net/netfilter/ipvs/ip_vs_proto_sctp.c |  2 +-
>  net/netfilter/nf_nat_proto_sctp.c     |  2 +-
>  net/sched/act_csum.c                  |  2 +-
>  net/sctp/offload.c                    |  2 +-
>  net/sctp/output.c                     |  3 ++-
>  7 files changed, 27 insertions(+), 14 deletions(-)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index aaf1072..527be47 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -189,12 +189,13 @@
>   *
>   *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
>   *     offloading the SCTP CRC in a packet. To perform this offload the stack
> - *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
> - *     accordingly. Note the there is no indication in the skbuff that the
> - *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
> - *     both IP checksum offload and SCTP CRC offload must verify which offload
> - *     is configured for a packet presumably by inspecting packet headers; in
> - *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
> + *     will set set csum_start and csum_offset accordingly, set ip_summed to
> + *     CHECKSUM_PARTIAL and set csum_algo to CRC32C_CHECKSUM, to provide an
> + *     indication in the skbuff that the CHECKSUM_PARTIAL refers to CRC32c.
> + *     A driver that supports both IP checksum offload and SCTP CRC32c offload
> + *     must verify which offload is configured for a packet by testing the
> + *     value of skb->csum_algo; skb_crc32c_csum_help is provided to resolve
> + *     CHECKSUM_PARTIAL on skbs where csum_algo is CRC32C_CHECKSUM.
>   *
>   *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
>   *     offloading the FCOE CRC in a packet. To perform this offload the stack
> @@ -614,6 +615,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,
>   *     @wifi_acked_valid: wifi_acked was set
>   *     @wifi_acked: whether frame was acked on wifi or not
>   *     @no_fcs:  Request NIC to treat last 4 bytes as Ethernet FCS
> + *     @csum_algo: algorithm used to compute checksum
>   *     @dst_pending_confirm: need to confirm neighbour
>    *    @napi_id: id of the NAPI struct this skb came from
>   *     @secmark: security marking
> @@ -742,8 +744,10 @@ struct sk_buff {
>         __u8                    csum_valid:1;
>         __u8                    csum_complete_sw:1;
>         __u8                    csum_level:2;
> -       __u8                    __unused:1; /* one bit hole */
> -
> +       enum {
> +               INTERNET_CHECKSUM = 0,
> +               CRC32C_CHECKSUM,
> +       }                       csum_algo:1;

I am worried this opens the door to a new open ended functionality
that will be rarely used in practice. Checksum offload is pervasive,
CRC offload is still a very narrow use case. Adding yet more
CRC/checksum variants will need more bits. It may be sufficient for
now just to make this a single bit which indicates "ones' checksum" or
indicates "other". In this case of "other" we need some analysis so
determine which checksum it is, this might be something that flow
dissector could support.

>         __u8                    dst_pending_confirm:1;
>  #ifdef CONFIG_IPV6_NDISC_NODETYPE
>         __u8                    ndisc_nodetype:2;
> @@ -3129,6 +3133,14 @@ struct skb_checksum_ops {
>
>  extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
>
> +static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
> +                                          const u8 ip_summed)
> +{
> +       skb->csum_algo = ip_summed = CHECKSUM_PARTIAL ? CRC32C_CHECKSUM :
> +               INTERNET_CHECKSUM;
> +       skb->ip_summed = ip_summed;

This seems odd to me. skb->csum_algo and skb->ip_summed always end up
having the same value.

> +}
> +
>  __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
>                       __wsum csum, const struct skb_checksum_ops *ops);
>  __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 91ba01a..c6a4281 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2641,7 +2641,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb)
>                         goto out;
>         }
>         *(__le32 *)(skb->data + offset) = crc32c_csum;
> -       skb->ip_summed = CHECKSUM_NONE;
> +       skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
>  out:
>         return ret;
>  }
> diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> index 56f8e4b..8800bf7 100644
> --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
> +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> @@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
>                           unsigned int sctphoff)
>  {
>         sctph->checksum = sctp_compute_cksum(skb, sctphoff);
> -       skb->ip_summed = CHECKSUM_UNNECESSARY;
> +       skb_set_crc32c_ipsummed(skb, CHECKSUM_UNNECESSARY);

The old code is better. CHECKSUM_UNNECESSARY already applies to non IP
checksums. There is nothing special about crc32 in this regard and
skb->csum_algo should only be valid when skb->ip_summed =
CHECKSUM_PARTIAL so no need to set it here. This point should also be
in documentation.

>  }
>
>  static int
> diff --git a/net/netfilter/nf_nat_proto_sctp.c b/net/netfilter/nf_nat_proto_sctp.c
> index 804e8a0..82a7c4c 100644
> --- a/net/netfilter/nf_nat_proto_sctp.c
> +++ b/net/netfilter/nf_nat_proto_sctp.c
> @@ -60,7 +60,7 @@ sctp_manip_pkt(struct sk_buff *skb,
>
>         if (skb->ip_summed != CHECKSUM_PARTIAL) {
>                 hdr->checksum = sctp_compute_cksum(skb, hdroff);
> -               skb->ip_summed = CHECKSUM_NONE;
> +               skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
>         }
>
>         return true;
> diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
> index 6c319a4..6e7e862 100644
> --- a/net/sched/act_csum.c
> +++ b/net/sched/act_csum.c
> @@ -349,7 +349,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
>
>         sctph->checksum = sctp_compute_cksum(skb,
>                                              skb_network_offset(skb) + ihl);
> -       skb->ip_summed = CHECKSUM_NONE;
> +       skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
>
>         return 1;
>  }
> diff --git a/net/sctp/offload.c b/net/sctp/offload.c
> index 378f462..4b98339 100644
> --- a/net/sctp/offload.c
> +++ b/net/sctp/offload.c
> @@ -34,7 +34,7 @@
>
>  static __le32 sctp_gso_make_checksum(struct sk_buff *skb)
>  {
> -       skb->ip_summed = CHECKSUM_NONE;
> +       skb_set_crc32c_ipsummed(skb, CHECKSUM_NONE);
>         return sctp_compute_cksum(skb, skb_transport_offset(skb));
>  }
>
> diff --git a/net/sctp/output.c b/net/sctp/output.c
> index 1224421..386cbd8 100644
> --- a/net/sctp/output.c
> +++ b/net/sctp/output.c
> @@ -524,10 +524,11 @@ static int sctp_packet_pack(struct sctp_packet *packet,
>                 struct sctphdr *sh >                         (struct sctphdr *)skb_transport_header(head);
>
> +               skb_set_crc32c_ipsummed(head, CHECKSUM_NONE);
>                 sh->checksum = sctp_compute_cksum(head, 0);
>         } else {
>  chksum:
> -               head->ip_summed = CHECKSUM_PARTIAL;
> +               skb_set_crc32c_ipsummed(head, CHECKSUM_PARTIAL);
>                 head->csum_start = skb_transport_header(head) - head->head;
>                 head->csum_offset = offsetof(struct sctphdr, checksum);
>         }
> --
> 2.7.4
>

Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Davide Caratti]

hello Tom,

On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
> On Fri, Apr 7, 2017 at 7:16 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> > @@ -742,8 +744,10 @@ struct sk_buff {
> >         __u8                    csum_valid:1;
> >         __u8                    csum_complete_sw:1;
> >         __u8                    csum_level:2;
> > -       __u8                    __unused:1; /* one bit hole */
> > -
> > +       enum {
> > +               INTERNET_CHECKSUM = 0,
> > +               CRC32C_CHECKSUM,
> > +       }                       csum_algo:1;
> 
> I am worried this opens the door to a new open ended functionality
> that will be rarely used in practice. Checksum offload is pervasive,
> CRC offload is still a very narrow use case.

thank you for the prompt response. I thought there was a silent
agreement on that - Alexander proposed usage of an enum bitfield to be
ready for FCoE (and I'm not against it, unless I have to find a second
free bit in struct sk_buff :-) ). But maybe I'm misunderstanding your
concern: is it the  name of the variable, (csum_algo instead of
crc32c_csum), or the usage of enum bitfield (or both?) ?

On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
> Adding yet more
> CRC/checksum variants will need more bits. It may be sufficient for
> now just to make this a single bit which indicates "ones' checksum" or
> indicates "other". In this case of "other" we need some analysis so
> determine which checksum it is, this might be something that flow
> dissector could support.

... which is my intent: by the way, from my perspective, we don't need more than 1 bit
to extend the functionality. While reviewing my code, I was also considering
extending the witdth of skb->ip_summed from 2 to 3 bit, so that it was possible
to

#define

CRC32C_PARTIAL <- for SCTP
CRC_PARTIAL <- for FCoE
CHECKSUM_PARTIAL <- for everything else

It's conceptually the same thing, and the free bit is used more
efficiently. But then I would need to check all places where
CHECKSUM_PARTIAL is used in assignments and test: so, I told myself it's
not worth doing it until somebody requests to extend this functionality to
FCoE.

> > @@ -3129,6 +3133,14 @@ struct skb_checksum_ops {
> > 
> >  extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
> > 
> > +static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
> > +                                          const u8 ip_summed)
> > +{
> > +       skb->csum_algo = ip_summed == CHECKSUM_PARTIAL ? CRC32C_CHECKSUM :
> > +               INTERNET_CHECKSUM;
> > +       skb->ip_summed = ip_summed;
> 
> This seems odd to me. skb->csum_algo and skb->ip_summed always end up
> having the same value.

this is accidentally true for CHEKSUM_NONE and CHECKSUM_PARTIAL, and only
if skb carries a SCTP packet. This was my intent:

ip_summed  (2 bit)                     | csum_algo     (1 bit)
---------------------------------------+-------------------
CHEKSUM_NONE = 0                       | INTERNET_CHECKSUM = 0
CHECKSUM_PARTIAL = 1                   | CRC32C_CHECKSUM = 1
CHECKSUM_COMPLETE = 2 (not applicable) | INTERNET_CHECKSUM = 0 (don't care)
CHECKSUM_UNNECESSARY = 3               | INTERNET_CHECKSUM = 0

I can do this in a more explicit way, changing the prototype to

static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
                                           const u8 ip_summed,
                                           const u8 csum_algo)

(with the advantage of saving a test on the value of ip_summed).
Find in the comment below the reason why I'm clearing csum_algo every time
the SCTP CRC32c is computed.

> > --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
> > +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> > @@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
> >                           unsigned int sctphoff)
> >  {
> >         sctph->checksum = sctp_compute_cksum(skb, sctphoff);
> > -       skb->ip_summed = CHECKSUM_UNNECESSARY;
> > +       skb_set_crc32c_ipsummed(skb, CHECKSUM_UNNECESSARY);
> 
> The old code is better. CHECKSUM_UNNECESSARY already applies to non IP
> checksums. There is nothing special about crc32 in this regard and
> skb->csum_algo should only be valid when skb->ip_summed ==
> CHECKSUM_PARTIAL so no need to set it here. This point should also be
> in documentation.

In my understanding, csum_algo needs to be set to INTERNET_CHECKSUM after the
CRC32c is computed. Otherwise, after subsequent operation on the skb (e.g. it
is encapsulated in a UDP frame), there is the possibility for skb->ip_summed
to become CHECKSUM_PARTIAL again. So, to ensure that skb_checksum_help() and
not skb_crc32c_help() will be called, csum_algo must be 0.

To minimize the impact of the patch, I substituted all assignments of skb->ip_summed,
done by SCTP-related code, with calls to skb_set_crc32c_ipsummed(). The alternative is
to explicitly set csum_algo to 0 (INTERNET_CHECKSUM) in SCTP-related code. Do you agree?

thank you in advance,
regards

Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Davide Caratti]

hello Tom,

On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
> On Fri, Apr 7, 2017 at 7:16 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> > @@ -742,8 +744,10 @@ struct sk_buff {
> >         __u8                    csum_valid:1;
> >         __u8                    csum_complete_sw:1;
> >         __u8                    csum_level:2;
> > -       __u8                    __unused:1; /* one bit hole */
> > -
> > +       enum {
> > +               INTERNET_CHECKSUM = 0,
> > +               CRC32C_CHECKSUM,
> > +       }                       csum_algo:1;
> 
> I am worried this opens the door to a new open ended functionality
> that will be rarely used in practice. Checksum offload is pervasive,
> CRC offload is still a very narrow use case.

thank you for the prompt response. I thought there was a silent
agreement on that - Alexander proposed usage of an enum bitfield to be
ready for FCoE (and I'm not against it, unless I have to find a second
free bit in struct sk_buff :-) ). But maybe I'm misunderstanding your
concern: is it the  name of the variable, (csum_algo instead of
crc32c_csum), or the usage of enum bitfield (or both?) ?

On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
> Adding yet more
> CRC/checksum variants will need more bits. It may be sufficient for
> now just to make this a single bit which indicates "ones' checksum" or
> indicates "other". In this case of "other" we need some analysis so
> determine which checksum it is, this might be something that flow
> dissector could support.

... which is my intent: by the way, from my perspective, we don't need more than 1 bit
to extend the functionality. While reviewing my code, I was also considering
extending the witdth of skb->ip_summed from 2 to 3 bit, so that it was possible
to

#define

CRC32C_PARTIAL <- for SCTP
CRC_PARTIAL <- for FCoE
CHECKSUM_PARTIAL <- for everything else

It's conceptually the same thing, and the free bit is used more
efficiently. But then I would need to check all places where
CHECKSUM_PARTIAL is used in assignments and test: so, I told myself it's
not worth doing it until somebody requests to extend this functionality to
FCoE.

> > @@ -3129,6 +3133,14 @@ struct skb_checksum_ops {
> > 
> >  extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
> > 
> > +static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
> > +                                          const u8 ip_summed)
> > +{
> > +       skb->csum_algo = ip_summed = CHECKSUM_PARTIAL ? CRC32C_CHECKSUM :
> > +               INTERNET_CHECKSUM;
> > +       skb->ip_summed = ip_summed;
> 
> This seems odd to me. skb->csum_algo and skb->ip_summed always end up
> having the same value.

this is accidentally true for CHEKSUM_NONE and CHECKSUM_PARTIAL, and only
if skb carries a SCTP packet. This was my intent:

ip_summed  (2 bit)                     | csum_algo     (1 bit)
---------------------------------------+-------------------
CHEKSUM_NONE = 0                       | INTERNET_CHECKSUM = 0
CHECKSUM_PARTIAL = 1                   | CRC32C_CHECKSUM = 1
CHECKSUM_COMPLETE = 2 (not applicable) | INTERNET_CHECKSUM = 0 (don't care)
CHECKSUM_UNNECESSARY = 3               | INTERNET_CHECKSUM = 0

I can do this in a more explicit way, changing the prototype to

static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
                                           const u8 ip_summed,
                                           const u8 csum_algo)

(with the advantage of saving a test on the value of ip_summed).
Find in the comment below the reason why I'm clearing csum_algo every time
the SCTP CRC32c is computed.

> > --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
> > +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
> > @@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
> >                           unsigned int sctphoff)
> >  {
> >         sctph->checksum = sctp_compute_cksum(skb, sctphoff);
> > -       skb->ip_summed = CHECKSUM_UNNECESSARY;
> > +       skb_set_crc32c_ipsummed(skb, CHECKSUM_UNNECESSARY);
> 
> The old code is better. CHECKSUM_UNNECESSARY already applies to non IP
> checksums. There is nothing special about crc32 in this regard and
> skb->csum_algo should only be valid when skb->ip_summed =
> CHECKSUM_PARTIAL so no need to set it here. This point should also be
> in documentation.

In my understanding, csum_algo needs to be set to INTERNET_CHECKSUM after the
CRC32c is computed. Otherwise, after subsequent operation on the skb (e.g. it
is encapsulated in a UDP frame), there is the possibility for skb->ip_summed
to become CHECKSUM_PARTIAL again. So, to ensure that skb_checksum_help() and
not skb_crc32c_help() will be called, csum_algo must be 0.

To minimize the impact of the patch, I substituted all assignments of skb->ip_summed,
done by SCTP-related code, with calls to skb_set_crc32c_ipsummed(). The alternative is
to explicitly set csum_algo to 0 (INTERNET_CHECKSUM) in SCTP-related code. Do you agree?

thank you in advance,
regards
--
davide

Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Tom Herbert]

On Fri, Apr 7, 2017 at 10:29 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> hello Tom,
>
> On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
>> On Fri, Apr 7, 2017 at 7:16 AM, Davide Caratti <dcaratti@redhat.com> wrote:
>> > @@ -742,8 +744,10 @@ struct sk_buff {
>> >         __u8                    csum_valid:1;
>> >         __u8                    csum_complete_sw:1;
>> >         __u8                    csum_level:2;
>> > -       __u8                    __unused:1; /* one bit hole */
>> > -
>> > +       enum {
>> > +               INTERNET_CHECKSUM = 0,
>> > +               CRC32C_CHECKSUM,
>> > +       }                       csum_algo:1;
>>
>> I am worried this opens the door to a new open ended functionality
>> that will be rarely used in practice. Checksum offload is pervasive,
>> CRC offload is still a very narrow use case.
>
> thank you for the prompt response. I thought there was a silent
> agreement on that - Alexander proposed usage of an enum bitfield to be
> ready for FCoE (and I'm not against it, unless I have to find a second
> free bit in struct sk_buff :-) ). But maybe I'm misunderstanding your
> concern: is it the  name of the variable, (csum_algo instead of
> crc32c_csum), or the usage of enum bitfield (or both?) ?
>
> On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
>> Adding yet more
>> CRC/checksum variants will need more bits. It may be sufficient for
>> now just to make this a single bit which indicates "ones' checksum" or
>> indicates "other". In this case of "other" we need some analysis so
>> determine which checksum it is, this might be something that flow
>> dissector could support.
>
> ... which is my intent: by the way, from my perspective, we don't need more than 1 bit
> to extend the functionality. While reviewing my code, I was also considering
> extending the witdth of skb->ip_summed from 2 to 3 bit, so that it was possible
> to
>
Maybe just call it csum_not_ip then. Then just do "if
(unlikely(skb->csum_not_ip)) ..."

> #define
>
> CRC32C_PARTIAL <- for SCTP
> CRC_PARTIAL <- for FCoE
> CHECKSUM_PARTIAL <- for everything else
>
> It's conceptually the same thing, and the free bit is used more
> efficiently. But then I would need to check all places where
> CHECKSUM_PARTIAL is used in assignments and test: so, I told myself it's
> not worth doing it until somebody requests to extend this functionality to
> FCoE.
>
I've thought about extending ip_summed before with something like
csum_invalid. I think it opens up a can of worms since ip_summed is
being used in so many places already and the semantics of each value
have to be extremely well defined for the whole system (this is one
place where we can't tolerate any ambiguity at all and it everything
needs to be clearly documented).

>> > @@ -3129,6 +3133,14 @@ struct skb_checksum_ops {
>> >
>> >  extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
>> >
>> > +static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
>> > +                                          const u8 ip_summed)
>> > +{
>> > +       skb->csum_algo = ip_summed == CHECKSUM_PARTIAL ? CRC32C_CHECKSUM :
>> > +               INTERNET_CHECKSUM;
>> > +       skb->ip_summed = ip_summed;
>>
>> This seems odd to me. skb->csum_algo and skb->ip_summed always end up
>> having the same value.
>
> this is accidentally true for CHEKSUM_NONE and CHECKSUM_PARTIAL, and only
> if skb carries a SCTP packet. This was my intent:
>
> ip_summed  (2 bit)                     | csum_algo     (1 bit)
> ---------------------------------------+-------------------
> CHEKSUM_NONE = 0                       | INTERNET_CHECKSUM = 0
> CHECKSUM_PARTIAL = 1                   | CRC32C_CHECKSUM = 1
> CHECKSUM_COMPLETE = 2 (not applicable) | INTERNET_CHECKSUM = 0 (don't care)
> CHECKSUM_UNNECESSARY = 3               | INTERNET_CHECKSUM = 0
>
> I can do this in a more explicit way, changing the prototype to
>
> static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
>                                            const u8 ip_summed,
>                                            const u8 csum_algo)
>
> (with the advantage of saving a test on the value of ip_summed).
> Find in the comment below the reason why I'm clearing csum_algo every time
> the SCTP CRC32c is computed.
>
>> > --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
>> > +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
>> > @@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
>> >                           unsigned int sctphoff)
>> >  {
>> >         sctph->checksum = sctp_compute_cksum(skb, sctphoff);
>> > -       skb->ip_summed = CHECKSUM_UNNECESSARY;
>> > +       skb_set_crc32c_ipsummed(skb, CHECKSUM_UNNECESSARY);
>>
>> The old code is better. CHECKSUM_UNNECESSARY already applies to non IP
>> checksums. There is nothing special about crc32 in this regard and
>> skb->csum_algo should only be valid when skb->ip_summed ==
>> CHECKSUM_PARTIAL so no need to set it here. This point should also be
>> in documentation.
>
> In my understanding, csum_algo needs to be set to INTERNET_CHECKSUM after the
> CRC32c is computed. Otherwise, after subsequent operation on the skb (e.g. it
> is encapsulated in a UDP frame), there is the possibility for skb->ip_summed
> to become CHECKSUM_PARTIAL again. So, to ensure that skb_checksum_help() and
> not skb_crc32c_help() will be called, csum_algo must be 0.
>
ip_summed should no longer be CHECKSUM_PARTIAL with CRC32c is computed.

> To minimize the impact of the patch, I substituted all assignments of skb->ip_summed,
> done by SCTP-related code, with calls to skb_set_crc32c_ipsummed(). The alternative is
> to explicitly set csum_algo to 0 (INTERNET_CHECKSUM) in SCTP-related code. Do you agree?
>
No, like I said the only case where this new bit is relevant is when
CHECKSUM_PARTIAL for a CRC is being done. When it's set for offloading
sctp crc it must be set. When CRC is resolved, in the helper for
instance, it must be cleared. If these rules are properly followed
then the bit will be zero in all other cases without needing any
additional work or conditionals.

Tom

> thank you in advance,
> regards
> --
> davide
>

Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Tom Herbert]

On Fri, Apr 7, 2017 at 10:29 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> hello Tom,
>
> On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
>> On Fri, Apr 7, 2017 at 7:16 AM, Davide Caratti <dcaratti@redhat.com> wrote:
>> > @@ -742,8 +744,10 @@ struct sk_buff {
>> >         __u8                    csum_valid:1;
>> >         __u8                    csum_complete_sw:1;
>> >         __u8                    csum_level:2;
>> > -       __u8                    __unused:1; /* one bit hole */
>> > -
>> > +       enum {
>> > +               INTERNET_CHECKSUM = 0,
>> > +               CRC32C_CHECKSUM,
>> > +       }                       csum_algo:1;
>>
>> I am worried this opens the door to a new open ended functionality
>> that will be rarely used in practice. Checksum offload is pervasive,
>> CRC offload is still a very narrow use case.
>
> thank you for the prompt response. I thought there was a silent
> agreement on that - Alexander proposed usage of an enum bitfield to be
> ready for FCoE (and I'm not against it, unless I have to find a second
> free bit in struct sk_buff :-) ). But maybe I'm misunderstanding your
> concern: is it the  name of the variable, (csum_algo instead of
> crc32c_csum), or the usage of enum bitfield (or both?) ?
>
> On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
>> Adding yet more
>> CRC/checksum variants will need more bits. It may be sufficient for
>> now just to make this a single bit which indicates "ones' checksum" or
>> indicates "other". In this case of "other" we need some analysis so
>> determine which checksum it is, this might be something that flow
>> dissector could support.
>
> ... which is my intent: by the way, from my perspective, we don't need more than 1 bit
> to extend the functionality. While reviewing my code, I was also considering
> extending the witdth of skb->ip_summed from 2 to 3 bit, so that it was possible
> to
>
Maybe just call it csum_not_ip then. Then just do "if
(unlikely(skb->csum_not_ip)) ..."

> #define
>
> CRC32C_PARTIAL <- for SCTP
> CRC_PARTIAL <- for FCoE
> CHECKSUM_PARTIAL <- for everything else
>
> It's conceptually the same thing, and the free bit is used more
> efficiently. But then I would need to check all places where
> CHECKSUM_PARTIAL is used in assignments and test: so, I told myself it's
> not worth doing it until somebody requests to extend this functionality to
> FCoE.
>
I've thought about extending ip_summed before with something like
csum_invalid. I think it opens up a can of worms since ip_summed is
being used in so many places already and the semantics of each value
have to be extremely well defined for the whole system (this is one
place where we can't tolerate any ambiguity at all and it everything
needs to be clearly documented).

>> > @@ -3129,6 +3133,14 @@ struct skb_checksum_ops {
>> >
>> >  extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
>> >
>> > +static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
>> > +                                          const u8 ip_summed)
>> > +{
>> > +       skb->csum_algo = ip_summed = CHECKSUM_PARTIAL ? CRC32C_CHECKSUM :
>> > +               INTERNET_CHECKSUM;
>> > +       skb->ip_summed = ip_summed;
>>
>> This seems odd to me. skb->csum_algo and skb->ip_summed always end up
>> having the same value.
>
> this is accidentally true for CHEKSUM_NONE and CHECKSUM_PARTIAL, and only
> if skb carries a SCTP packet. This was my intent:
>
> ip_summed  (2 bit)                     | csum_algo     (1 bit)
> ---------------------------------------+-------------------
> CHEKSUM_NONE = 0                       | INTERNET_CHECKSUM = 0
> CHECKSUM_PARTIAL = 1                   | CRC32C_CHECKSUM = 1
> CHECKSUM_COMPLETE = 2 (not applicable) | INTERNET_CHECKSUM = 0 (don't care)
> CHECKSUM_UNNECESSARY = 3               | INTERNET_CHECKSUM = 0
>
> I can do this in a more explicit way, changing the prototype to
>
> static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
>                                            const u8 ip_summed,
>                                            const u8 csum_algo)
>
> (with the advantage of saving a test on the value of ip_summed).
> Find in the comment below the reason why I'm clearing csum_algo every time
> the SCTP CRC32c is computed.
>
>> > --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
>> > +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
>> > @@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
>> >                           unsigned int sctphoff)
>> >  {
>> >         sctph->checksum = sctp_compute_cksum(skb, sctphoff);
>> > -       skb->ip_summed = CHECKSUM_UNNECESSARY;
>> > +       skb_set_crc32c_ipsummed(skb, CHECKSUM_UNNECESSARY);
>>
>> The old code is better. CHECKSUM_UNNECESSARY already applies to non IP
>> checksums. There is nothing special about crc32 in this regard and
>> skb->csum_algo should only be valid when skb->ip_summed =
>> CHECKSUM_PARTIAL so no need to set it here. This point should also be
>> in documentation.
>
> In my understanding, csum_algo needs to be set to INTERNET_CHECKSUM after the
> CRC32c is computed. Otherwise, after subsequent operation on the skb (e.g. it
> is encapsulated in a UDP frame), there is the possibility for skb->ip_summed
> to become CHECKSUM_PARTIAL again. So, to ensure that skb_checksum_help() and
> not skb_crc32c_help() will be called, csum_algo must be 0.
>
ip_summed should no longer be CHECKSUM_PARTIAL with CRC32c is computed.

> To minimize the impact of the patch, I substituted all assignments of skb->ip_summed,
> done by SCTP-related code, with calls to skb_set_crc32c_ipsummed(). The alternative is
> to explicitly set csum_algo to 0 (INTERNET_CHECKSUM) in SCTP-related code. Do you agree?
>
No, like I said the only case where this new bit is relevant is when
CHECKSUM_PARTIAL for a CRC is being done. When it's set for offloading
sctp crc it must be set. When CRC is resolved, in the helper for
instance, it must be cleared. If these rules are properly followed
then the bit will be zero in all other cases without needing any
additional work or conditionals.

Tom

> thank you in advance,
> regards
> --
> davide
>

Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Davide Caratti]

thank you,

On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
> Maybe just call it csum_not_ip then. Then just do "if
> (unlikely(skb->csum_not_ip)) ..."

OK, I will rename the bit, avoid the enum and use the 'unlikely'. Up to now,
this series uses the bit for SCTP only and leaves unmodified behavior of
offloaded FCoE frames: please let me know if you disagree on that.

On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
> On Fri, Apr 7, 2017 at 10:29 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> > In my understanding, csum_algo needs to be set to INTERNET_CHECKSUM after the
> > CRC32c is computed. Otherwise, after subsequent operation on the skb (e.g. it
> > is encapsulated in a UDP frame), there is the possibility for skb->ip_summed
> > to become CHECKSUM_PARTIAL again. So, to ensure that skb_checksum_help() and
> > not skb_crc32c_help() will be called, csum_algo must be 0.

> ip_summed should no longer be CHECKSUM_PARTIAL with CRC32c is computed.

Even though it's uncommon, skb->ip_summed can become CHECKSUM_PARTIAL again
after the CRC32c is computed and CHECKSUM_NONE is set: for example, when a
veth and a vxlan with UDP checksums are enslaved to the same bridge, and the
NIC below vxlan has no checksumming capabilities. Here, validate_xmit_skb is
called three times on the same skb (see perf output at the bottom): 

* before transmission on the veth: here ip_summed is CHECKSUM_PARTIAL, but
the device supports CRC32c offload so the skb is (correctly) untouched.

* before vxlan encapsulation: here ip_summed is CHECKSUM_PARTIAL,
skb->csum_not_inet is 1 and NETIF_F_SCTP_CRC is not set. Here,
skb_csum_hwoffload_help() correctly fills the CRC32c and assigns ip_summed
to CHECKSUM_NONE.

* before transmission on the NIC: ip_summed is CHECKSUM_PARTIAL again (because
udp_set_csum changed csum_start and csum_offset to point to the tunnel
UDP header). No bit in NETIF_F_HW_CSUM is set: if skb->csum_not_inet is still 1,
the helper (wrongly) computes CRC32c again, thus corrupting the outer UDP
transport header. On the contrary, if skb->csum_not_inet is 0, skb_checksum_help()
correctly resolves CHECKSUM_PARTIAL.

To avoid this problem, skb->csum_not_inet must be assigned to 0 every time
the CHECKSUM_PARTIAL is resolved on skb carrying SCTP packets.

> > To minimize the impact of the patch, I substituted all assignments of skb->ip_summed,
> > done by SCTP-related code, with calls to skb_set_crc32c_ipsummed(). The alternative is
> > to explicitly set csum_algo to 0 (INTERNET_CHECKSUM) in SCTP-related code. Do you agree?

> No, like I said the only case where this new bit is relevant is when
> CHECKSUM_PARTIAL for a CRC is being done. When it's set for offloading
> sctp crc it must be set. When CRC is resolved, in the helper for
> instance, it must be cleared. If these rules are properly followed
> then the bit will be zero in all other cases without needing any
> additional work or conditionals.

At a minimum, this csum_not_inet bit needs to be cleared in three places:
1) in skb_crc32c_csum_help, to fix scenarios like veth->bridge->vxlan->NIC above.
2) in sctp_gso_make_checksum, a SCTP GSO packet is segmented and CRC32c is written
on each segment. skb->ip_summed transitions from CHECKSUM_PARTIAL to CHECKSUM_NONE.
3) in act_csum, because TC action mangling the packet are called before 
validate_xmit_skb().

It is not necessary to do it in netfilter NAT (even it is harmless), because
SCTP packets having CHECKSUM_PARTIAL are not resolved (since commit 3189a290f98d
"netfilter: nat: skip checksum on offload SCTP packets"). And it should be not
needed in IPVS code, because ip_summed is set to CHECKSUM_UNNECESSARY, so skb
is not going to be checksummed anymore.

thank you in advance for the feedback!
regards,

Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c

[Davide Caratti]

thank you,

On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
> Maybe just call it csum_not_ip then. Then just do "if
> (unlikely(skb->csum_not_ip)) ..."

OK, I will rename the bit, avoid the enum and use the 'unlikely'. Up to now,
this series uses the bit for SCTP only and leaves unmodified behavior of
offloaded FCoE frames: please let me know if you disagree on that.

On Fri, 2017-04-07 at 08:43 -0700, Tom Herbert wrote:
> On Fri, Apr 7, 2017 at 10:29 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> > In my understanding, csum_algo needs to be set to INTERNET_CHECKSUM after the
> > CRC32c is computed. Otherwise, after subsequent operation on the skb (e.g. it
> > is encapsulated in a UDP frame), there is the possibility for skb->ip_summed
> > to become CHECKSUM_PARTIAL again. So, to ensure that skb_checksum_help() and
> > not skb_crc32c_help() will be called, csum_algo must be 0.

> ip_summed should no longer be CHECKSUM_PARTIAL with CRC32c is computed.

Even though it's uncommon, skb->ip_summed can become CHECKSUM_PARTIAL again
after the CRC32c is computed and CHECKSUM_NONE is set: for example, when a
veth and a vxlan with UDP checksums are enslaved to the same bridge, and the
NIC below vxlan has no checksumming capabilities. Here, validate_xmit_skb is
called three times on the same skb (see perf output at the bottom): 

* before transmission on the veth: here ip_summed is CHECKSUM_PARTIAL, but
the device supports CRC32c offload so the skb is (correctly) untouched.

* before vxlan encapsulation: here ip_summed is CHECKSUM_PARTIAL,
skb->csum_not_inet is 1 and NETIF_F_SCTP_CRC is not set. Here,
skb_csum_hwoffload_help() correctly fills the CRC32c and assigns ip_summed
to CHECKSUM_NONE.

* before transmission on the NIC: ip_summed is CHECKSUM_PARTIAL again (because
udp_set_csum changed csum_start and csum_offset to point to the tunnel
UDP header). No bit in NETIF_F_HW_CSUM is set: if skb->csum_not_inet is still 1,
the helper (wrongly) computes CRC32c again, thus corrupting the outer UDP
transport header. On the contrary, if skb->csum_not_inet is 0, skb_checksum_help()
correctly resolves CHECKSUM_PARTIAL.

To avoid this problem, skb->csum_not_inet must be assigned to 0 every time
the CHECKSUM_PARTIAL is resolved on skb carrying SCTP packets.

> > To minimize the impact of the patch, I substituted all assignments of skb->ip_summed,
> > done by SCTP-related code, with calls to skb_set_crc32c_ipsummed(). The alternative is
> > to explicitly set csum_algo to 0 (INTERNET_CHECKSUM) in SCTP-related code. Do you agree?

> No, like I said the only case where this new bit is relevant is when
> CHECKSUM_PARTIAL for a CRC is being done. When it's set for offloading
> sctp crc it must be set. When CRC is resolved, in the helper for
> instance, it must be cleared. If these rules are properly followed
> then the bit will be zero in all other cases without needing any
> additional work or conditionals.

At a minimum, this csum_not_inet bit needs to be cleared in three places:
1) in skb_crc32c_csum_help, to fix scenarios like veth->bridge->vxlan->NIC above.
2) in sctp_gso_make_checksum, a SCTP GSO packet is segmented and CRC32c is written
on each segment. skb->ip_summed transitions from CHECKSUM_PARTIAL to CHECKSUM_NONE.
3) in act_csum, because TC action mangling the packet are called before 
validate_xmit_skb().

It is not necessary to do it in netfilter NAT (even it is harmless), because
SCTP packets having CHECKSUM_PARTIAL are not resolved (since commit 3189a290f98d
"netfilter: nat: skip checksum on offload SCTP packets"). And it should be not
needed in IPVS code, because ip_summed is set to CHECKSUM_UNNECESSARY, so skb
is not going to be checksummed anymore.

thank you in advance for the feedback!
regards,
--
davide 


scenario:

vethA --> vethB --> bridge --> vxlan encaps --> NIC

# ./perf probe -k vmlinux  --add \
 "skb_csum_hwoffload_help csum_offset=skb->csum_offset ip_summed=skb->ip_summed:b2@7/32 skb=skb"
# ./perf record -e probe:skb_csum_hwoffload_help -aR -- ./scenario-vxlan.sh 

# ./perf script
<....>
ncat  7577 [000] 22056.548907: probe:skb_csum_hwoffload_help: (ffffffff8162a6f0) csum_offset=8 ip_summed=1 skb=0xffff880106f6bd00
ncat  7577 [000] 22056.548915: probe:skb_csum_hwoffload_help: (ffffffff8162a6f0) csum_offset=8 ip_summed=1 skb=0xffff880106f6bd00
ncat  7577 [000] 22056.548917: probe:skb_csum_hwoffload_help: (ffffffff8162a6f0) csum_offset=6 ip_summed=1 skb=0xffff880106f6bd00
<....>

[PATCH RFC net-next v4 0/7] net: improve support for SCTP checksums

[Davide Caratti]

hello Tom,

On Fri, 2017-04-07 at 11:11 -0700, Tom Herbert wrote:
> maybe just call it csum_not_ip then. Then just do "if
> (unlikely(skb->csum_not_ip)) ..."

Ok, done. V4 uses this bit for SCTP only and leaves unmodified behavior
when offloaded FCoE frames are processed. Further work is still possible
to extend this fix for FCoE, if needed, either by using additional sk_buff
bits, or using skb->csum_not_ip and use other data (e.g. skb->csum_offset)
to distinguish SCTP from FCoE.

> the only case where this new bit is relevant is when
> CHECKSUM_PARTIAL for a CRC is being done. When it's set for offloading
> sctp crc it must be set. When CRC is resolved, in the helper for
> instance, it must be cleared.

in V4 the bit is set when SCTP packets with offloaded checksum are
generated; the bit is cleared when CRC32c is resolved for such packets
(i.e. skb->ip_summed transitions from CHECKSUM_PARTIAL to CHECKSUM_NONE).

Any feedbacks are appreciated!
thank you in advance,
--
davide


Davide Caratti (7):
  skbuff: add stub to help computing crc32c on SCTP packets
  net: introduce skb_crc32c_csum_help
  sk_buff: remove support for csum_bad in sk_buff
  net: use skb->csum_not_inet to identify packets needing crc32c
  net: more accurate checksumming in validate_xmit_skb()
  openvswitch: more accurate checksumming in queue_userspace_packet()
  sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

 Documentation/networking/checksum-offloads.txt   | 11 +++--
 drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
 include/linux/netdevice.h                        |  8 +--
 include/linux/skbuff.h                           | 58 +++++++++-------------
 net/bridge/netfilter/nft_reject_bridge.c         |  5 +-
 net/core/dev.c                                   | 63 +++++++++++++++++++++---
 net/core/skbuff.c                                | 24 +++++++++
 net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
 net/ipv6/netfilter/nf_reject_ipv6.c              |  3 --
 net/openvswitch/datapath.c                       |  2 +-
 net/sched/act_csum.c                             |  1 +
 net/sctp/offload.c                               |  8 +++
 net/sctp/output.c                                |  1 +
 13 files changed, 128 insertions(+), 60 deletions(-)

-- 
2.7.4

[PATCH RFC net-next v4 0/7] net: improve support for SCTP checksums

[Davide Caratti]

hello Tom,

On Fri, 2017-04-07 at 11:11 -0700, Tom Herbert wrote:
> maybe just call it csum_not_ip then. Then just do "if
> (unlikely(skb->csum_not_ip)) ..."

Ok, done. V4 uses this bit for SCTP only and leaves unmodified behavior
when offloaded FCoE frames are processed. Further work is still possible
to extend this fix for FCoE, if needed, either by using additional sk_buff
bits, or using skb->csum_not_ip and use other data (e.g. skb->csum_offset)
to distinguish SCTP from FCoE.

> the only case where this new bit is relevant is when
> CHECKSUM_PARTIAL for a CRC is being done. When it's set for offloading
> sctp crc it must be set. When CRC is resolved, in the helper for
> instance, it must be cleared.

in V4 the bit is set when SCTP packets with offloaded checksum are
generated; the bit is cleared when CRC32c is resolved for such packets
(i.e. skb->ip_summed transitions from CHECKSUM_PARTIAL to CHECKSUM_NONE).

Any feedbacks are appreciated!
thank you in advance,
--
davide


Davide Caratti (7):
  skbuff: add stub to help computing crc32c on SCTP packets
  net: introduce skb_crc32c_csum_help
  sk_buff: remove support for csum_bad in sk_buff
  net: use skb->csum_not_inet to identify packets needing crc32c
  net: more accurate checksumming in validate_xmit_skb()
  openvswitch: more accurate checksumming in queue_userspace_packet()
  sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

 Documentation/networking/checksum-offloads.txt   | 11 +++--
 drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
 include/linux/netdevice.h                        |  8 +--
 include/linux/skbuff.h                           | 58 +++++++++-------------
 net/bridge/netfilter/nft_reject_bridge.c         |  5 +-
 net/core/dev.c                                   | 63 +++++++++++++++++++++---
 net/core/skbuff.c                                | 24 +++++++++
 net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
 net/ipv6/netfilter/nf_reject_ipv6.c              |  3 --
 net/openvswitch/datapath.c                       |  2 +-
 net/sched/act_csum.c                             |  1 +
 net/sctp/offload.c                               |  8 +++
 net/sctp/output.c                                |  1 +
 13 files changed, 128 insertions(+), 60 deletions(-)

-- 
2.7.4

[PATCH RFC net-next v4 1/7] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
it can't be used in net core. Like it has been done previously with other
symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
to allow computation of crc32c checksum in net core after sctp.ko (and thus
libcrc32c) has been loaded.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h |  2 ++
 net/core/skbuff.c      | 24 ++++++++++++++++++++++++
 net/sctp/offload.c     |  7 +++++++
 3 files changed, 33 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 741d75c..ba3ae21 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3127,6 +3127,8 @@ struct skb_checksum_ops {
 	__wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
 };
 
+extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index ad2af56..182608b 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2242,6 +2242,30 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
 }
 EXPORT_SYMBOL(skb_copy_and_csum_bits);
 
+static __wsum warn_crc32c_csum_update(const void *buff, int len, __wsum sum)
+{
+	net_warn_ratelimited(
+		"%s: attempt to compute crc32c without libcrc32c.ko\n",
+		__func__);
+	return 0;
+}
+
+static __wsum warn_crc32c_csum_combine(__wsum csum, __wsum csum2,
+				       int offset, int len)
+{
+	net_warn_ratelimited(
+		"%s: attempt to compute crc32c without libcrc32c.ko\n",
+		__func__);
+	return 0;
+}
+
+const struct skb_checksum_ops *crc32c_csum_stub __read_mostly =
+	&(struct skb_checksum_ops) {
+	.update  = warn_crc32c_csum_update,
+	.combine = warn_crc32c_csum_combine,
+};
+EXPORT_SYMBOL(crc32c_csum_stub);
+
  /**
  *	skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
  *	@from: source buffer
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 4f5a2b5..378f462 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
 	},
 };
 
+static const struct skb_checksum_ops *crc32c_csum_ops __read_mostly =
+	&(struct skb_checksum_ops) {
+	.update  = sctp_csum_update,
+	.combine = sctp_csum_combine,
+};
+
 int __init sctp_offload_init(void)
 {
 	int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
 	if (ret)
 		goto ipv4;
 
+	crc32c_csum_stub = crc32c_csum_ops;
 	return ret;
 
 ipv4:
-- 
2.7.4

[PATCH RFC net-next v4 1/7] skbuff: add stub to help computing crc32c on SCTP packets

[Davide Caratti]

sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
it can't be used in net core. Like it has been done previously with other
symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
to allow computation of crc32c checksum in net core after sctp.ko (and thus
libcrc32c) has been loaded.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h |  2 ++
 net/core/skbuff.c      | 24 ++++++++++++++++++++++++
 net/sctp/offload.c     |  7 +++++++
 3 files changed, 33 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 741d75c..ba3ae21 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3127,6 +3127,8 @@ struct skb_checksum_ops {
 	__wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
 };
 
+extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly;
+
 __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
 		      __wsum csum, const struct skb_checksum_ops *ops);
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index ad2af56..182608b 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2242,6 +2242,30 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
 }
 EXPORT_SYMBOL(skb_copy_and_csum_bits);
 
+static __wsum warn_crc32c_csum_update(const void *buff, int len, __wsum sum)
+{
+	net_warn_ratelimited(
+		"%s: attempt to compute crc32c without libcrc32c.ko\n",
+		__func__);
+	return 0;
+}
+
+static __wsum warn_crc32c_csum_combine(__wsum csum, __wsum csum2,
+				       int offset, int len)
+{
+	net_warn_ratelimited(
+		"%s: attempt to compute crc32c without libcrc32c.ko\n",
+		__func__);
+	return 0;
+}
+
+const struct skb_checksum_ops *crc32c_csum_stub __read_mostly +	&(struct skb_checksum_ops) {
+	.update  = warn_crc32c_csum_update,
+	.combine = warn_crc32c_csum_combine,
+};
+EXPORT_SYMBOL(crc32c_csum_stub);
+
  /**
  *	skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
  *	@from: source buffer
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 4f5a2b5..378f462 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
 	},
 };
 
+static const struct skb_checksum_ops *crc32c_csum_ops __read_mostly +	&(struct skb_checksum_ops) {
+	.update  = sctp_csum_update,
+	.combine = sctp_csum_combine,
+};
+
 int __init sctp_offload_init(void)
 {
 	int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
 	if (ret)
 		goto ipv4;
 
+	crc32c_csum_stub = crc32c_csum_ops;
 	return ret;
 
 ipv4:
-- 
2.7.4

[PATCH RFC net-next v4 2/7] net: introduce skb_crc32c_csum_help

[Davide Caratti]

skb_crc32c_csum_help is like skb_checksum_help, but it is designed for
checksumming SCTP packets using crc32c (see RFC3309), provided that
libcrc32c.ko has been loaded before. In case libcrc32c is not loaded,
invoking skb_crc32c_csum_help on a skb results in one the following
printouts:

warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.ko
warn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.ko

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/netdevice.h |  1 +
 include/linux/skbuff.h    |  3 ++-
 net/core/dev.c            | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b0aa089..bf84a67 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3898,6 +3898,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
+int skb_crc32c_csum_help(struct sk_buff *skb);
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index ba3ae21..ec4551b 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -193,7 +193,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
  *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
diff --git a/net/core/dev.c b/net/core/dev.c
index 5d33e2b..c7aec95 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -140,6 +140,7 @@
 #include <linux/hrtimer.h>
 #include <linux/netfilter_ingress.h>
 #include <linux/crash_dump.h>
+#include <linux/sctp.h>
 
 #include "net-sysfs.h"
 
@@ -2606,6 +2607,45 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_crc32c_csum_help(struct sk_buff *skb)
+{
+	__le32 crc32c_csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		goto out;
+
+	if (unlikely(skb_is_gso(skb)))
+		goto out;
+
+	/* Before computing a checksum, we should make sure no frag could
+	 * be modified by an external entity : checksum could be wrong.
+	 */
+	if (unlikely(skb_has_shared_frag(skb))) {
+		ret = __skb_linearize(skb);
+		if (ret)
+			goto out;
+	}
+
+	offset = skb_checksum_start_offset(skb);
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+						  skb->len - offset, ~(__u32)0,
+						  crc32c_csum_stub));
+	offset += offsetof(struct sctphdr, checksum);
+	BUG_ON(offset >= skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4

[PATCH RFC net-next v4 2/7] net: introduce skb_crc32c_csum_help

[Davide Caratti]

skb_crc32c_csum_help is like skb_checksum_help, but it is designed for
checksumming SCTP packets using crc32c (see RFC3309), provided that
libcrc32c.ko has been loaded before. In case libcrc32c is not loaded,
invoking skb_crc32c_csum_help on a skb results in one the following
printouts:

warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.ko
warn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.ko

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/netdevice.h |  1 +
 include/linux/skbuff.h    |  3 ++-
 net/core/dev.c            | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b0aa089..bf84a67 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3898,6 +3898,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
+int skb_crc32c_csum_help(struct sk_buff *skb);
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index ba3ae21..ec4551b 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -193,7 +193,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
  *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
diff --git a/net/core/dev.c b/net/core/dev.c
index 5d33e2b..c7aec95 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -140,6 +140,7 @@
 #include <linux/hrtimer.h>
 #include <linux/netfilter_ingress.h>
 #include <linux/crash_dump.h>
+#include <linux/sctp.h>
 
 #include "net-sysfs.h"
 
@@ -2606,6 +2607,45 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_crc32c_csum_help(struct sk_buff *skb)
+{
+	__le32 crc32c_csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		goto out;
+
+	if (unlikely(skb_is_gso(skb)))
+		goto out;
+
+	/* Before computing a checksum, we should make sure no frag could
+	 * be modified by an external entity : checksum could be wrong.
+	 */
+	if (unlikely(skb_has_shared_frag(skb))) {
+		ret = __skb_linearize(skb);
+		if (ret)
+			goto out;
+	}
+
+	offset = skb_checksum_start_offset(skb);
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+						  skb->len - offset, ~(__u32)0,
+						  crc32c_csum_stub));
+	offset += offsetof(struct sctphdr, checksum);
+	BUG_ON(offset >= skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4

Re: [PATCH RFC net-next v4 2/7] net: introduce skb_crc32c_csum_help

[Marcelo Ricardo Leitner]

On Thu, Apr 20, 2017 at 03:38:08PM +0200, Davide Caratti wrote:
> skb_crc32c_csum_help is like skb_checksum_help, but it is designed for
> checksumming SCTP packets using crc32c (see RFC3309), provided that
> libcrc32c.ko has been loaded before. In case libcrc32c is not loaded,
> invoking skb_crc32c_csum_help on a skb results in one the following
> printouts:
> 
> warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.ko
> warn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.ko
> 
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/netdevice.h |  1 +
>  include/linux/skbuff.h    |  3 ++-
>  net/core/dev.c            | 40 ++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 43 insertions(+), 1 deletion(-)
> 
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index b0aa089..bf84a67 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -3898,6 +3898,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
>  
>  int dev_get_nest_level(struct net_device *dev);
>  int skb_checksum_help(struct sk_buff *skb);
> +int skb_crc32c_csum_help(struct sk_buff *skb);
>  struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
>  				  netdev_features_t features, bool tx_path);
>  struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index ba3ae21..ec4551b 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -193,7 +193,8 @@
>   *     accordingly. Note the there is no indication in the skbuff that the
>   *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
>   *     both IP checksum offload and SCTP CRC offload must verify which offload
> - *     is configured for a packet presumably by inspecting packet headers.
> + *     is configured for a packet presumably by inspecting packet headers; in
> + *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
>   *
>   *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
>   *     offloading the FCOE CRC in a packet. To perform this offload the stack
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 5d33e2b..c7aec95 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -140,6 +140,7 @@
>  #include <linux/hrtimer.h>
>  #include <linux/netfilter_ingress.h>
>  #include <linux/crash_dump.h>
> +#include <linux/sctp.h>
>  
>  #include "net-sysfs.h"
>  
> @@ -2606,6 +2607,45 @@ int skb_checksum_help(struct sk_buff *skb)
>  }
>  EXPORT_SYMBOL(skb_checksum_help);
>  
> +int skb_crc32c_csum_help(struct sk_buff *skb)
> +{
> +	__le32 crc32c_csum;
> +	int ret = 0, offset;
> +
> +	if (skb->ip_summed != CHECKSUM_PARTIAL)
> +		goto out;
> +
> +	if (unlikely(skb_is_gso(skb)))
> +		goto out;
> +
> +	/* Before computing a checksum, we should make sure no frag could
> +	 * be modified by an external entity : checksum could be wrong.
> +	 */
> +	if (unlikely(skb_has_shared_frag(skb))) {
> +		ret = __skb_linearize(skb);
> +		if (ret)
> +			goto out;
> +	}
> +
> +	offset = skb_checksum_start_offset(skb);
> +	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
> +						  skb->len - offset, ~(__u32)0,
> +						  crc32c_csum_stub));
> +	offset += offsetof(struct sctphdr, checksum);
> +	BUG_ON(offset >= skb_headlen(skb));

I suggest using WARN_ON_ONCE() here and returning an error instead. Will
still allow debugging and won't disrupt the system.

> +
> +	if (skb_cloned(skb) &&
> +	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
> +		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
> +		if (ret)
> +			goto out;
> +	}

We could do this check (including the BUG_ON/WARN check above) before
the actual crc32 calc. This can fail, and if it does, we will have
calculated it in vain. Note how offset doesn't really depend on the
checksum result.

I know skb_checksum_help also does it this way, maybe it was because of
some cache optimization on the offset += checksum offset  operation?

> +	*(__le32 *)(skb->data + offset) = crc32c_csum;
> +	skb->ip_summed = CHECKSUM_NONE;
> +out:
> +	return ret;
> +}
> +
>  __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
>  {
>  	__be16 type = skb->protocol;
> -- 
> 2.7.4
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-sctp" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: [PATCH RFC net-next v4 2/7] net: introduce skb_crc32c_csum_help

[Marcelo Ricardo Leitner]

On Thu, Apr 20, 2017 at 03:38:08PM +0200, Davide Caratti wrote:
> skb_crc32c_csum_help is like skb_checksum_help, but it is designed for
> checksumming SCTP packets using crc32c (see RFC3309), provided that
> libcrc32c.ko has been loaded before. In case libcrc32c is not loaded,
> invoking skb_crc32c_csum_help on a skb results in one the following
> printouts:
> 
> warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.ko
> warn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.ko
> 
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/netdevice.h |  1 +
>  include/linux/skbuff.h    |  3 ++-
>  net/core/dev.c            | 40 ++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 43 insertions(+), 1 deletion(-)
> 
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index b0aa089..bf84a67 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -3898,6 +3898,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
>  
>  int dev_get_nest_level(struct net_device *dev);
>  int skb_checksum_help(struct sk_buff *skb);
> +int skb_crc32c_csum_help(struct sk_buff *skb);
>  struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
>  				  netdev_features_t features, bool tx_path);
>  struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index ba3ae21..ec4551b 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -193,7 +193,8 @@
>   *     accordingly. Note the there is no indication in the skbuff that the
>   *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
>   *     both IP checksum offload and SCTP CRC offload must verify which offload
> - *     is configured for a packet presumably by inspecting packet headers.
> + *     is configured for a packet presumably by inspecting packet headers; in
> + *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
>   *
>   *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
>   *     offloading the FCOE CRC in a packet. To perform this offload the stack
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 5d33e2b..c7aec95 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -140,6 +140,7 @@
>  #include <linux/hrtimer.h>
>  #include <linux/netfilter_ingress.h>
>  #include <linux/crash_dump.h>
> +#include <linux/sctp.h>
>  
>  #include "net-sysfs.h"
>  
> @@ -2606,6 +2607,45 @@ int skb_checksum_help(struct sk_buff *skb)
>  }
>  EXPORT_SYMBOL(skb_checksum_help);
>  
> +int skb_crc32c_csum_help(struct sk_buff *skb)
> +{
> +	__le32 crc32c_csum;
> +	int ret = 0, offset;
> +
> +	if (skb->ip_summed != CHECKSUM_PARTIAL)
> +		goto out;
> +
> +	if (unlikely(skb_is_gso(skb)))
> +		goto out;
> +
> +	/* Before computing a checksum, we should make sure no frag could
> +	 * be modified by an external entity : checksum could be wrong.
> +	 */
> +	if (unlikely(skb_has_shared_frag(skb))) {
> +		ret = __skb_linearize(skb);
> +		if (ret)
> +			goto out;
> +	}
> +
> +	offset = skb_checksum_start_offset(skb);
> +	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
> +						  skb->len - offset, ~(__u32)0,
> +						  crc32c_csum_stub));
> +	offset += offsetof(struct sctphdr, checksum);
> +	BUG_ON(offset >= skb_headlen(skb));

I suggest using WARN_ON_ONCE() here and returning an error instead. Will
still allow debugging and won't disrupt the system.

> +
> +	if (skb_cloned(skb) &&
> +	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
> +		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
> +		if (ret)
> +			goto out;
> +	}

We could do this check (including the BUG_ON/WARN check above) before
the actual crc32 calc. This can fail, and if it does, we will have
calculated it in vain. Note how offset doesn't really depend on the
checksum result.

I know skb_checksum_help also does it this way, maybe it was because of
some cache optimization on the offset += checksum offset  operation?

> +	*(__le32 *)(skb->data + offset) = crc32c_csum;
> +	skb->ip_summed = CHECKSUM_NONE;
> +out:
> +	return ret;
> +}
> +
>  __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
>  {
>  	__be16 type = skb->protocol;
> -- 
> 2.7.4
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-sctp" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

[PATCH RFC net-next v4 3/7] sk_buff: remove support for csum_bad in sk_buff

[Davide Caratti]

This bit was introduced with 5a21232983aa ("net: Support for csum_bad in
skbuff") to reduce the stack workload when processing RX packets carrying
a wrong Internet Checksum. Up to now, only one driver (besides GRO core)
are setting it.
The test on NAPI_GRO_CB(skb)->flush in dev_gro_receive() is now done
before the test on same_flow, to preserve behavior in case of wrong
checksum.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
 include/linux/netdevice.h                        |  4 +---
 include/linux/skbuff.h                           | 23 ++---------------------
 net/bridge/netfilter/nft_reject_bridge.c         |  5 +----
 net/core/dev.c                                   |  8 +++-----
 net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
 net/ipv6/netfilter/nf_reject_ipv6.c              |  3 ---
 7 files changed, 9 insertions(+), 38 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
index 3a8a4aa..9a08179 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
@@ -223,7 +223,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget)
 		skb->protocol = eth_type_trans(skb, ndev);
 		if (unlikely(buff->is_cso_err)) {
 			++self->stats.rx.errors;
-			__skb_mark_checksum_bad(skb);
+			skb->ip_summed = CHECKSUM_NONE;
 		} else {
 			if (buff->is_ip_cso) {
 				__skb_incr_checksum_unnecessary(skb);
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index bf84a67..ab9e3dc 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2546,9 +2546,7 @@ static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)
 	if (__skb_gro_checksum_validate_needed(skb, zero_okay, check))	\
 		__ret = __skb_gro_checksum_validate_complete(skb,	\
 				compute_pseudo(skb, proto));		\
-	if (__ret)							\
-		__skb_mark_checksum_bad(skb);				\
-	else								\
+	if (!__ret)							\
 		skb_gro_incr_csum_unnecessary(skb);			\
 	__ret;								\
 })
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index ec4551b..927309e 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -743,7 +743,7 @@ struct sk_buff {
 	__u8			csum_valid:1;
 	__u8			csum_complete_sw:1;
 	__u8			csum_level:2;
-	__u8			csum_bad:1;
+	__u8			__csum_bad_unused:1; /* one bit hole */
 
 	__u8			dst_pending_confirm:1;
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
@@ -3387,21 +3387,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb)
 	}
 }
 
-static inline void __skb_mark_checksum_bad(struct sk_buff *skb)
-{
-	/* Mark current checksum as bad (typically called from GRO
-	 * path). In the case that ip_summed is CHECKSUM_NONE
-	 * this must be the first checksum encountered in the packet.
-	 * When ip_summed is CHECKSUM_UNNECESSARY, this is the first
-	 * checksum after the last one validated. For UDP, a zero
-	 * checksum can not be marked as bad.
-	 */
-
-	if (skb->ip_summed == CHECKSUM_NONE ||
-	    skb->ip_summed == CHECKSUM_UNNECESSARY)
-		skb->csum_bad = 1;
-}
-
 /* Check if we need to perform checksum complete validation.
  *
  * Returns true if checksum complete is needed, false otherwise
@@ -3455,9 +3440,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb,
 			skb->csum_valid = 1;
 			return 0;
 		}
-	} else if (skb->csum_bad) {
-		/* ip_summed == CHECKSUM_NONE in this case */
-		return (__force __sum16)1;
 	}
 
 	skb->csum = psum;
@@ -3517,8 +3499,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto)
 
 static inline bool __skb_checksum_convert_check(struct sk_buff *skb)
 {
-	return (skb->ip_summed == CHECKSUM_NONE &&
-		skb->csum_valid && !skb->csum_bad);
+	return (skb->ip_summed == CHECKSUM_NONE && skb->csum_valid);
 }
 
 static inline void __skb_checksum_convert(struct sk_buff *skb,
diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
index 346ef6b..c16dd3a 100644
--- a/net/bridge/netfilter/nft_reject_bridge.c
+++ b/net/bridge/netfilter/nft_reject_bridge.c
@@ -111,7 +111,7 @@ static void nft_reject_br_send_v4_unreach(struct net *net,
 	__wsum csum;
 	u8 proto;
 
-	if (oldskb->csum_bad || !nft_bridge_iphdr_validate(oldskb))
+	if (!nft_bridge_iphdr_validate(oldskb))
 		return;
 
 	/* IP header checks: fragment. */
@@ -226,9 +226,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)
 	__be16 fo;
 	u8 proto = ip6h->nexthdr;
 
-	if (skb->csum_bad)
-		return false;
-
 	if (skb_csum_unnecessary(skb))
 		return true;
 
diff --git a/net/core/dev.c b/net/core/dev.c
index c7aec95..77a2d73 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4533,9 +4533,6 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 	if (!(skb->dev->features & NETIF_F_GRO))
 		goto normal;
 
-	if (skb->csum_bad)
-		goto normal;
-
 	gro_list_prepare(napi, skb);
 
 	rcu_read_lock();
@@ -4595,11 +4592,12 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 		napi->gro_count--;
 	}
 
+	if (NAPI_GRO_CB(skb)->flush)
+		goto normal;
+
 	if (same_flow)
 		goto ok;
 
-	if (NAPI_GRO_CB(skb)->flush)
-		goto normal;
 
 	if (unlikely(napi->gro_count >= MAX_GRO_SKBS)) {
 		struct sk_buff *nskb = napi->gro_list;
diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c
index 7cd8d0d..6f8d9e5 100644
--- a/net/ipv4/netfilter/nf_reject_ipv4.c
+++ b/net/ipv4/netfilter/nf_reject_ipv4.c
@@ -172,7 +172,7 @@ void nf_send_unreach(struct sk_buff *skb_in, int code, int hook)
 	struct iphdr *iph = ip_hdr(skb_in);
 	u8 proto;
 
-	if (skb_in->csum_bad || iph->frag_off & htons(IP_OFFSET))
+	if (iph->frag_off & htons(IP_OFFSET))
 		return;
 
 	if (skb_csum_unnecessary(skb_in)) {
diff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c
index eedee5d..f63b18e 100644
--- a/net/ipv6/netfilter/nf_reject_ipv6.c
+++ b/net/ipv6/netfilter/nf_reject_ipv6.c
@@ -220,9 +220,6 @@ static bool reject6_csum_ok(struct sk_buff *skb, int hook)
 	__be16 fo;
 	u8 proto;
 
-	if (skb->csum_bad)
-		return false;
-
 	if (skb_csum_unnecessary(skb))
 		return true;
 
-- 
2.7.4

[PATCH RFC net-next v4 3/7] sk_buff: remove support for csum_bad in sk_buff

[Davide Caratti]

This bit was introduced with 5a21232983aa ("net: Support for csum_bad in
skbuff") to reduce the stack workload when processing RX packets carrying
a wrong Internet Checksum. Up to now, only one driver (besides GRO core)
are setting it.
The test on NAPI_GRO_CB(skb)->flush in dev_gro_receive() is now done
before the test on same_flow, to preserve behavior in case of wrong
checksum.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
 include/linux/netdevice.h                        |  4 +---
 include/linux/skbuff.h                           | 23 ++---------------------
 net/bridge/netfilter/nft_reject_bridge.c         |  5 +----
 net/core/dev.c                                   |  8 +++-----
 net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
 net/ipv6/netfilter/nf_reject_ipv6.c              |  3 ---
 7 files changed, 9 insertions(+), 38 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
index 3a8a4aa..9a08179 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
@@ -223,7 +223,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget)
 		skb->protocol = eth_type_trans(skb, ndev);
 		if (unlikely(buff->is_cso_err)) {
 			++self->stats.rx.errors;
-			__skb_mark_checksum_bad(skb);
+			skb->ip_summed = CHECKSUM_NONE;
 		} else {
 			if (buff->is_ip_cso) {
 				__skb_incr_checksum_unnecessary(skb);
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index bf84a67..ab9e3dc 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2546,9 +2546,7 @@ static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)
 	if (__skb_gro_checksum_validate_needed(skb, zero_okay, check))	\
 		__ret = __skb_gro_checksum_validate_complete(skb,	\
 				compute_pseudo(skb, proto));		\
-	if (__ret)							\
-		__skb_mark_checksum_bad(skb);				\
-	else								\
+	if (!__ret)							\
 		skb_gro_incr_csum_unnecessary(skb);			\
 	__ret;								\
 })
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index ec4551b..927309e 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -743,7 +743,7 @@ struct sk_buff {
 	__u8			csum_valid:1;
 	__u8			csum_complete_sw:1;
 	__u8			csum_level:2;
-	__u8			csum_bad:1;
+	__u8			__csum_bad_unused:1; /* one bit hole */
 
 	__u8			dst_pending_confirm:1;
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
@@ -3387,21 +3387,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb)
 	}
 }
 
-static inline void __skb_mark_checksum_bad(struct sk_buff *skb)
-{
-	/* Mark current checksum as bad (typically called from GRO
-	 * path). In the case that ip_summed is CHECKSUM_NONE
-	 * this must be the first checksum encountered in the packet.
-	 * When ip_summed is CHECKSUM_UNNECESSARY, this is the first
-	 * checksum after the last one validated. For UDP, a zero
-	 * checksum can not be marked as bad.
-	 */
-
-	if (skb->ip_summed = CHECKSUM_NONE ||
-	    skb->ip_summed = CHECKSUM_UNNECESSARY)
-		skb->csum_bad = 1;
-}
-
 /* Check if we need to perform checksum complete validation.
  *
  * Returns true if checksum complete is needed, false otherwise
@@ -3455,9 +3440,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb,
 			skb->csum_valid = 1;
 			return 0;
 		}
-	} else if (skb->csum_bad) {
-		/* ip_summed = CHECKSUM_NONE in this case */
-		return (__force __sum16)1;
 	}
 
 	skb->csum = psum;
@@ -3517,8 +3499,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto)
 
 static inline bool __skb_checksum_convert_check(struct sk_buff *skb)
 {
-	return (skb->ip_summed = CHECKSUM_NONE &&
-		skb->csum_valid && !skb->csum_bad);
+	return (skb->ip_summed = CHECKSUM_NONE && skb->csum_valid);
 }
 
 static inline void __skb_checksum_convert(struct sk_buff *skb,
diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
index 346ef6b..c16dd3a 100644
--- a/net/bridge/netfilter/nft_reject_bridge.c
+++ b/net/bridge/netfilter/nft_reject_bridge.c
@@ -111,7 +111,7 @@ static void nft_reject_br_send_v4_unreach(struct net *net,
 	__wsum csum;
 	u8 proto;
 
-	if (oldskb->csum_bad || !nft_bridge_iphdr_validate(oldskb))
+	if (!nft_bridge_iphdr_validate(oldskb))
 		return;
 
 	/* IP header checks: fragment. */
@@ -226,9 +226,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)
 	__be16 fo;
 	u8 proto = ip6h->nexthdr;
 
-	if (skb->csum_bad)
-		return false;
-
 	if (skb_csum_unnecessary(skb))
 		return true;
 
diff --git a/net/core/dev.c b/net/core/dev.c
index c7aec95..77a2d73 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4533,9 +4533,6 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 	if (!(skb->dev->features & NETIF_F_GRO))
 		goto normal;
 
-	if (skb->csum_bad)
-		goto normal;
-
 	gro_list_prepare(napi, skb);
 
 	rcu_read_lock();
@@ -4595,11 +4592,12 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 		napi->gro_count--;
 	}
 
+	if (NAPI_GRO_CB(skb)->flush)
+		goto normal;
+
 	if (same_flow)
 		goto ok;
 
-	if (NAPI_GRO_CB(skb)->flush)
-		goto normal;
 
 	if (unlikely(napi->gro_count >= MAX_GRO_SKBS)) {
 		struct sk_buff *nskb = napi->gro_list;
diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c
index 7cd8d0d..6f8d9e5 100644
--- a/net/ipv4/netfilter/nf_reject_ipv4.c
+++ b/net/ipv4/netfilter/nf_reject_ipv4.c
@@ -172,7 +172,7 @@ void nf_send_unreach(struct sk_buff *skb_in, int code, int hook)
 	struct iphdr *iph = ip_hdr(skb_in);
 	u8 proto;
 
-	if (skb_in->csum_bad || iph->frag_off & htons(IP_OFFSET))
+	if (iph->frag_off & htons(IP_OFFSET))
 		return;
 
 	if (skb_csum_unnecessary(skb_in)) {
diff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c
index eedee5d..f63b18e 100644
--- a/net/ipv6/netfilter/nf_reject_ipv6.c
+++ b/net/ipv6/netfilter/nf_reject_ipv6.c
@@ -220,9 +220,6 @@ static bool reject6_csum_ok(struct sk_buff *skb, int hook)
 	__be16 fo;
 	u8 proto;
 
-	if (skb->csum_bad)
-		return false;
-
 	if (skb_csum_unnecessary(skb))
 		return true;
 
-- 
2.7.4

[sk_buff] 95510aef27: BUG:Bad_page_state_in_process

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 47757 bytes --]

FYI, we noticed the following commit:

commit: 95510aef27899c42a1b8c25a656b44d31fc5fcad ("sk_buff: remove support for csum_bad in sk_buff")
url: https://github.com/0day-ci/linux/commits/Davide-Caratti/skbuff-add-stub-to-help-computing-crc32c-on-SCTP-packets/20170420-233814


in testcase: unixbench
with following parameters:

	runtime: 300s
	nr_task: 100%
	test: context1
	cpufreq_governor: performance

test-description: UnixBench is the original BYTE UNIX benchmark suite aims to test performance of Unix-like system.
test-url: https://github.com/kdlucas/byte-unixbench


on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 4G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+----------------+------------+------------+
|                | 4c264afe8e | 95510aef27 |
+----------------+------------+------------+
| boot_successes | 4          | 3          |
+----------------+------------+------------+



[  479.604098] BUG: Bad page state in process swapper/3  pfn:11bd99
[  479.604100] page:ffffea00046f6640 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.604101] flags: 0x17ffffc0000000()
[  479.604103] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.604104] raw: 0000000000000000 0000000300000001 0000000000000000 0000000000000000
[  479.604104] page dumped because: nonzero _count
[  479.604105] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.604124] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.11.0-rc6-01591-g95510ae #1
[  479.604125] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.604125] Call Trace:
[  479.604127]  <IRQ>
[  479.604131]  dump_stack+0x63/0x8a
[  479.604134]  bad_page+0xc4/0x130
[  479.604135]  check_new_page_bad+0x67/0x80
[  479.604137]  get_page_from_freelist+0x448/0xca0
[  479.604139]  __alloc_pages_nodemask+0xd0/0x240
[  479.604140]  page_frag_alloc+0xc0/0x1a0
[  479.604143]  __napi_alloc_skb+0x8e/0xf0
[  479.604145]  rtl8169_poll+0x1dd/0x640
[  479.604147]  net_rx_action+0x23c/0x3f0
[  479.604148]  ? rtl8169_interrupt+0x6b/0x70
[  479.604150]  __do_softirq+0x104/0x2cb
[  479.604153]  irq_exit+0xf1/0x100
[  479.604155]  do_IRQ+0x4f/0xd0
[  479.604157]  common_interrupt+0x93/0x93
[  479.604159] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.604160] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.604161] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.604161] RDX: 0000006faaa19b7c RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.604162] RBP: ffffc900006bbeb8 R08: 000000000000049e R09: 0000000000000018
[  479.604162] R10: ffffc900006bbe48 R11: 000000000000028c R12: ffff88011fba4500
[  479.604163] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.604163]  </IRQ>
[  479.604165]  ? cpuidle_enter_state+0x110/0x2e0
[  479.604167]  cpuidle_enter+0x17/0x20
[  479.604169]  call_cpuidle+0x23/0x40
[  479.604170]  do_idle+0x189/0x200
[  479.604171]  cpu_startup_entry+0x1d/0x20
[  479.604174]  start_secondary+0x107/0x130
[  479.604175]  start_cpu+0x14/0x14
[  479.604176] Disabling lock debugging due to kernel taint
[  479.605091] BUG: Bad page state in process swapper/3  pfn:117b70
[  479.605092] page:ffffea00045edc00 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.605092] flags: 0x17ffffc0000000()
[  479.605094] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.605095] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
[  479.605095] page dumped because: nonzero _count
[  479.605095] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.605112] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.605113] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.605113] Call Trace:
[  479.605114]  <IRQ>
[  479.605116]  dump_stack+0x63/0x8a
[  479.605118]  bad_page+0xc4/0x130
[  479.605119]  check_new_page_bad+0x67/0x80
[  479.605121]  get_page_from_freelist+0x46c/0xca0
[  479.605123]  ? tcp_gro_receive+0x259/0x310
[  479.605125]  __alloc_pages_nodemask+0xd0/0x240
[  479.605126]  page_frag_alloc+0xc0/0x1a0
[  479.605129]  __napi_alloc_skb+0x8e/0xf0
[  479.605131]  rtl8169_poll+0x1dd/0x640
[  479.605132]  net_rx_action+0x23c/0x3f0
[  479.605133]  ? rtl8169_interrupt+0x6b/0x70
[  479.605134]  __do_softirq+0x104/0x2cb
[  479.605137]  irq_exit+0xf1/0x100
[  479.605139]  do_IRQ+0x4f/0xd0
[  479.605140]  common_interrupt+0x93/0x93
[  479.605142] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.605142] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.605143] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.605144] RDX: 0000006faab0b565 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.605145] RBP: ffffc900006bbeb8 R08: 0000000000000294 R09: 0000000000000018
[  479.605145] R10: ffffc900006bbe48 R11: 000000000000028c R12: ffff88011fba4500
[  479.605145] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.605146]  </IRQ>
[  479.605148]  ? cpuidle_enter_state+0x110/0x2e0
[  479.605149]  cpuidle_enter+0x17/0x20
[  479.605151]  call_cpuidle+0x23/0x40
[  479.605151]  do_idle+0x189/0x200
[  479.605152]  cpu_startup_entry+0x1d/0x20
[  479.605155]  start_secondary+0x107/0x130
[  479.605156]  start_cpu+0x14/0x14
[  479.606932] BUG: Bad page state in process swapper/3  pfn:116f19
[  479.606933] page:ffffea00045bc640 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.606934] flags: 0x17ffffc0000000()
[  479.606935] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.606936] raw: 0000000000000000 0000000300000001 0000000000000000 0000000000000000
[  479.606936] page dumped because: nonzero _count
[  479.606936] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.606952] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.606953] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.606953] Call Trace:
[  479.606954]  <IRQ>
[  479.606956]  dump_stack+0x63/0x8a
[  479.606957]  bad_page+0xc4/0x130
[  479.606958]  check_new_page_bad+0x67/0x80
[  479.606960]  get_page_from_freelist+0x448/0xca0
[  479.606962]  ? tcp_gro_receive+0x259/0x310
[  479.606963]  __alloc_pages_nodemask+0xd0/0x240
[  479.606965]  page_frag_alloc+0xc0/0x1a0
[  479.606967]  __napi_alloc_skb+0x8e/0xf0
[  479.606969]  rtl8169_poll+0x1dd/0x640
[  479.606970]  net_rx_action+0x23c/0x3f0
[  479.606971]  ? rtl8169_interrupt+0x6b/0x70
[  479.606973]  __do_softirq+0x104/0x2cb
[  479.606975]  irq_exit+0xf1/0x100
[  479.606977]  do_IRQ+0x4f/0xd0
[  479.606978]  common_interrupt+0x93/0x93
[  479.606980] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.606980] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.606981] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.606982] RDX: 0000006faacc6225 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.606982] RBP: ffffc900006bbeb8 R08: 000000000000028b R09: 0000000000000018
[  479.606983] R10: ffffc900006bbe48 R11: 000000000000023b R12: ffff88011fba4500
[  479.606983] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.606984]  </IRQ>
[  479.606985]  ? cpuidle_enter_state+0x110/0x2e0
[  479.606987]  cpuidle_enter+0x17/0x20
[  479.606989]  call_cpuidle+0x23/0x40
[  479.606989]  do_idle+0x189/0x200
[  479.606990]  cpu_startup_entry+0x1d/0x20
[  479.606992]  start_secondary+0x107/0x130
[  479.606993]  start_cpu+0x14/0x14
[  479.607896] BUG: Bad page state in process swapper/3  pfn:11640c
[  479.607897] page:ffffea0004590300 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.607898] flags: 0x17ffffc0000000()
[  479.607899] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.607900] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.607900] page dumped because: nonzero _count
[  479.607900] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.607915] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.607916] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.607916] Call Trace:
[  479.607916]  <IRQ>
[  479.607918]  dump_stack+0x63/0x8a
[  479.607920]  bad_page+0xc4/0x130
[  479.607921]  check_new_page_bad+0x67/0x80
[  479.607922]  get_page_from_freelist+0x448/0xca0
[  479.607924]  ? tcp_gro_receive+0x259/0x310
[  479.607926]  __alloc_pages_nodemask+0xd0/0x240
[  479.607927]  page_frag_alloc+0xc0/0x1a0
[  479.607929]  __napi_alloc_skb+0x8e/0xf0
[  479.607930]  rtl8169_poll+0x1dd/0x640
[  479.607932]  net_rx_action+0x23c/0x3f0
[  479.607933]  ? rtl8169_interrupt+0x6b/0x70
[  479.607934]  __do_softirq+0x104/0x2cb
[  479.607936]  irq_exit+0xf1/0x100
[  479.607938]  do_IRQ+0x4f/0xd0
[  479.607940]  common_interrupt+0x93/0x93
[  479.607941] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.607941] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.607942] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.607943] RDX: 0000006faadb774d RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.607943] RBP: ffffc900006bbeb8 R08: 000000000000028b R09: 0000000000000018
[  479.607944] R10: ffffc900006bbe48 R11: 000000000000027e R12: ffff88011fba4500
[  479.607944] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.607945]  </IRQ>
[  479.607946]  ? cpuidle_enter_state+0x110/0x2e0
[  479.607948]  cpuidle_enter+0x17/0x20
[  479.607949]  call_cpuidle+0x23/0x40
[  479.607950]  do_idle+0x189/0x200
[  479.607951]  cpu_startup_entry+0x1d/0x20
[  479.607953]  start_secondary+0x107/0x130
[  479.607954]  start_cpu+0x14/0x14
[  479.611708] BUG: Bad page state in process swapper/3  pfn:1171ca
[  479.611709] page:ffffea00045c7280 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.611710] flags: 0x17ffffc0000000()
[  479.611711] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.611712] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.611712] page dumped because: nonzero _count
[  479.611712] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.611727] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.611728] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.611728] Call Trace:
[  479.611729]  <IRQ>
[  479.611730]  dump_stack+0x63/0x8a
[  479.611732]  bad_page+0xc4/0x130
[  479.611733]  check_new_page_bad+0x67/0x80
[  479.611735]  get_page_from_freelist+0x448/0xca0
[  479.611737]  __alloc_pages_nodemask+0xd0/0x240
[  479.611738]  page_frag_alloc+0xc0/0x1a0
[  479.611740]  __napi_alloc_skb+0x8e/0xf0
[  479.611742]  rtl8169_poll+0x1dd/0x640
[  479.611743]  net_rx_action+0x23c/0x3f0
[  479.611744]  ? rtl8169_interrupt+0x6b/0x70
[  479.611745]  __do_softirq+0x104/0x2cb
[  479.611747]  irq_exit+0xf1/0x100
[  479.611750]  do_IRQ+0x4f/0xd0
[  479.611751]  common_interrupt+0x93/0x93
[  479.611752] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.611753] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.611754] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.611754] RDX: 0000006fab15558c RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.611755] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018
[  479.611755] R10: ffffc900006bbe48 R11: 0000000000000236 R12: ffff88011fba4500
[  479.611756] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.611756]  </IRQ>
[  479.611758]  ? cpuidle_enter_state+0x110/0x2e0
[  479.611759]  cpuidle_enter+0x17/0x20
[  479.611761]  call_cpuidle+0x23/0x40
[  479.611761]  do_idle+0x189/0x200
[  479.611762]  cpu_startup_entry+0x1d/0x20
[  479.611764]  start_secondary+0x107/0x130
[  479.611765]  start_cpu+0x14/0x14
[  479.612535] BUG: Bad page state in process swapper/3  pfn:117a15
[  479.612535] page:ffffea00045e8540 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.612536] flags: 0x17ffffc0000000()
[  479.612537] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.612538] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.612539] page dumped because: nonzero _count
[  479.612539] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.612553] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.612553] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.612554] Call Trace:
[  479.612554]  <IRQ>
[  479.612556]  dump_stack+0x63/0x8a
[  479.612557]  bad_page+0xc4/0x130
[  479.612558]  check_new_page_bad+0x67/0x80
[  479.612560]  get_page_from_freelist+0x448/0xca0
[  479.612562]  ? tcp_gro_receive+0x259/0x310
[  479.612563]  __alloc_pages_nodemask+0xd0/0x240
[  479.612565]  page_frag_alloc+0xc0/0x1a0
[  479.612567]  __napi_alloc_skb+0x8e/0xf0
[  479.612568]  rtl8169_poll+0x1dd/0x640
[  479.612569]  net_rx_action+0x23c/0x3f0
[  479.612570]  ? rtl8169_interrupt+0x6b/0x70
[  479.612571]  __do_softirq+0x104/0x2cb
[  479.612574]  irq_exit+0xf1/0x100
[  479.612575]  do_IRQ+0x4f/0xd0
[  479.612577]  common_interrupt+0x93/0x93
[  479.612578] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.612578] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.612579] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.612580] RDX: 0000006fab21ea9e RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.612580] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018
[  479.612581] R10: ffffc900006bbe48 R11: 000000000000025e R12: ffff88011fba4500
[  479.612581] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.612582]  </IRQ>
[  479.612583]  ? cpuidle_enter_state+0x110/0x2e0
[  479.612584]  cpuidle_enter+0x17/0x20
[  479.612586]  call_cpuidle+0x23/0x40
[  479.612587]  do_idle+0x189/0x200
[  479.612587]  cpu_startup_entry+0x1d/0x20
[  479.612589]  start_secondary+0x107/0x130
[  479.612590]  start_cpu+0x14/0x14
[  479.613358] BUG: Bad page state in process swapper/3  pfn:11721a
[  479.613359] page:ffffea00045c8680 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.613359] flags: 0x17ffffc0000000()
[  479.613361] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.613362] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.613362] page dumped because: nonzero _count
[  479.613362] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.613376] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.613377] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.613377] Call Trace:
[  479.613378]  <IRQ>
[  479.613379]  dump_stack+0x63/0x8a
[  479.613381]  bad_page+0xc4/0x130
[  479.613382]  check_new_page_bad+0x67/0x80
[  479.613383]  get_page_from_freelist+0x448/0xca0
[  479.613385]  ? tcp_gro_receive+0x259/0x310
[  479.613387]  __alloc_pages_nodemask+0xd0/0x240
[  479.613388]  page_frag_alloc+0xc0/0x1a0
[  479.613390]  __napi_alloc_skb+0x8e/0xf0
[  479.613391]  rtl8169_poll+0x1dd/0x640
[  479.613392]  net_rx_action+0x23c/0x3f0
[  479.613393]  ? rtl8169_interrupt+0x6b/0x70
[  479.613395]  __do_softirq+0x104/0x2cb
[  479.613396]  irq_exit+0xf1/0x100
[  479.613398]  do_IRQ+0x4f/0xd0
[  479.613399]  common_interrupt+0x93/0x93
[  479.613401] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.613401] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.613402] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.613402] RDX: 0000006fab2e84df RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.613403] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018
[  479.613403] R10: ffffc900006bbe48 R11: 000000000000025e R12: ffff88011fba4500
[  479.613404] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.613404]  </IRQ>
[  479.613406]  ? cpuidle_enter_state+0x110/0x2e0
[  479.613407]  cpuidle_enter+0x17/0x20
[  479.613409]  call_cpuidle+0x23/0x40
[  479.613409]  do_idle+0x189/0x200
[  479.613410]  cpu_startup_entry+0x1d/0x20
[  479.613412]  start_secondary+0x107/0x130
[  479.613413]  start_cpu+0x14/0x14
[  479.614172] BUG: Bad page state in process swapper/3  pfn:11b3b5
[  479.614173] page:ffffea00046ced40 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.614174] flags: 0x17ffffc0000000()
[  479.614174] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.614175] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.614176] page dumped because: nonzero _count
[  479.614176] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.614190] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.614190] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.614191] Call Trace:
[  479.614191]  <IRQ>
[  479.614193]  dump_stack+0x63/0x8a
[  479.614194]  bad_page+0xc4/0x130
[  479.614195]  check_new_page_bad+0x67/0x80
[  479.614197]  get_page_from_freelist+0x448/0xca0
[  479.614198]  ? tcp_gro_receive+0x259/0x310
[  479.614200]  __alloc_pages_nodemask+0xd0/0x240
[  479.614201]  page_frag_alloc+0xc0/0x1a0
[  479.614203]  __napi_alloc_skb+0x8e/0xf0
[  479.614204]  rtl8169_poll+0x1dd/0x640
[  479.614206]  net_rx_action+0x23c/0x3f0
[  479.614206]  ? rtl8169_interrupt+0x6b/0x70
[  479.614208]  __do_softirq+0x104/0x2cb
[  479.614209]  irq_exit+0xf1/0x100
[  479.614211]  do_IRQ+0x4f/0xd0
[  479.614212]  common_interrupt+0x93/0x93
[  479.614214] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.614214] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.614215] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.614215] RDX: 0000006fab3b1327 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.614216] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018
[  479.614216] R10: ffffc900006bbe48 R11: 000000000000025e R12: ffff88011fba4500
[  479.614217] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.614217]  </IRQ>
[  479.614219]  ? cpuidle_enter_state+0x110/0x2e0
[  479.614220]  cpuidle_enter+0x17/0x20
[  479.614221]  call_cpuidle+0x23/0x40
[  479.614222]  do_idle+0x189/0x200
[  479.614223]  cpu_startup_entry+0x1d/0x20
[  479.614225]  start_secondary+0x107/0x130
[  479.614226]  start_cpu+0x14/0x14
[  479.615817] BUG: Bad page state in process swapper/3  pfn:116506
[  479.615818] page:ffffea0004594180 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.615819] flags: 0x17ffffc0000000()
[  479.615820] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.615821] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.615821] page dumped because: nonzero _count
[  479.615821] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.615835] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.615835] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.615836] Call Trace:
[  479.615836]  <IRQ>
[  479.615838]  dump_stack+0x63/0x8a
[  479.615839]  bad_page+0xc4/0x130
[  479.615841]  check_new_page_bad+0x67/0x80
[  479.615842]  get_page_from_freelist+0x448/0xca0
[  479.615844]  ? tcp_gro_receive+0x259/0x310
[  479.615845]  __alloc_pages_nodemask+0xd0/0x240
[  479.615847]  page_frag_alloc+0xc0/0x1a0
[  479.615849]  __napi_alloc_skb+0x8e/0xf0
[  479.615850]  rtl8169_poll+0x1dd/0x640
[  479.615851]  net_rx_action+0x23c/0x3f0
[  479.615852]  ? rtl8169_interrupt+0x6b/0x70
[  479.615853]  __do_softirq+0x104/0x2cb
[  479.615855]  irq_exit+0xf1/0x100
[  479.615857]  do_IRQ+0x4f/0xd0
[  479.615858]  common_interrupt+0x93/0x93
[  479.615859] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.615860] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.615861] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.615861] RDX: 0000006fab543d4b RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.615862] RBP: ffffc900006bbeb8 R08: 000000000000025d R09: 0000000000000018
[  479.615862] R10: ffffc900006bbe48 R11: 0000000000000235 R12: ffff88011fba4500
[  479.615863] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.615863]  </IRQ>
[  479.615865]  ? cpuidle_enter_state+0x110/0x2e0
[  479.615866]  cpuidle_enter+0x17/0x20
[  479.615867]  call_cpuidle+0x23/0x40
[  479.615868]  do_idle+0x189/0x200
[  479.615869]  cpu_startup_entry+0x1d/0x20
[  479.615871]  start_secondary+0x107/0x130
[  479.615871]  start_cpu+0x14/0x14
[  479.615889] BUG: Bad page state in process swapper/3  pfn:11b0ea
[  479.615890] page:ffffea00046c3a80 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.615891] flags: 0x17ffffc0000000()
[  479.615891] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.615892] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.615893] page dumped because: nonzero _count
[  479.615893] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.615905] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.615905] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.615906] Call Trace:
[  479.615906]  <IRQ>
[  479.615907]  dump_stack+0x63/0x8a
[  479.615909]  bad_page+0xc4/0x130
[  479.615910]  check_new_page_bad+0x67/0x80
[  479.615911]  get_page_from_freelist+0x448/0xca0
[  479.615913]  ? tcp_gro_receive+0x259/0x310
[  479.615914]  __alloc_pages_nodemask+0xd0/0x240
[  479.615916]  page_frag_alloc+0xc0/0x1a0
[  479.615917]  __napi_alloc_skb+0x8e/0xf0
[  479.615919]  rtl8169_poll+0x1dd/0x640
[  479.615920]  net_rx_action+0x23c/0x3f0
[  479.615920]  ? rtl8169_interrupt+0x6b/0x70
[  479.615922]  __do_softirq+0x104/0x2cb
[  479.615924]  irq_exit+0xf1/0x100
[  479.615925]  do_IRQ+0x4f/0xd0
[  479.615927]  common_interrupt+0x93/0x93
[  479.615928] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.615928] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.615929] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.615929] RDX: 0000006fab543d4b RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.615930] RBP: ffffc900006bbeb8 R08: 000000000000025d R09: 0000000000000018
[  479.615930] R10: ffffc900006bbe48 R11: 0000000000000235 R12: ffff88011fba4500
[  479.615931] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.615931]  </IRQ>
[  479.615933]  ? cpuidle_enter_state+0x110/0x2e0
[  479.615934]  cpuidle_enter+0x17/0x20
[  479.615935]  call_cpuidle+0x23/0x40
[  479.615936]  do_idle+0x189/0x200
[  479.615937]  cpu_startup_entry+0x1d/0x20
[  479.615938]  start_secondary+0x107/0x130
[  479.615939]  start_cpu+0x14/0x14
[  479.617485] BUG: Bad page state in process swapper/3  pfn:116f7b
[  479.617486] page:ffffea00045bdec0 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.617487] flags: 0x17ffffc0000000()
[  479.617488] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.617489] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.617489] page dumped because: nonzero _count
[  479.617489] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.617503] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.617503] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.617503] Call Trace:
[  479.617504]  <IRQ>
[  479.617507]  dump_stack+0x63/0x8a
[  479.617508]  bad_page+0xc4/0x130
[  479.617509]  check_new_page_bad+0x67/0x80
[  479.617511]  get_page_from_freelist+0x448/0xca0
[  479.617513]  ? tcp_gro_receive+0x259/0x310
[  479.617514]  __alloc_pages_nodemask+0xd0/0x240
[  479.617516]  page_frag_alloc+0xc0/0x1a0
[  479.617517]  __napi_alloc_skb+0x8e/0xf0
[  479.617518]  rtl8169_poll+0x1dd/0x640
[  479.617520]  net_rx_action+0x23c/0x3f0
[  479.617520]  ? rtl8169_interrupt+0x6b/0x70
[  479.617522]  __do_softirq+0x104/0x2cb
[  479.617523]  irq_exit+0xf1/0x100
[  479.617525]  do_IRQ+0x4f/0xd0
[  479.617526]  common_interrupt+0x93/0x93
[  479.617528] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.617528] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.617529] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.617529] RDX: 0000006fab6d65e4 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.617530] RBP: ffffc900006bbeb8 R08: 000000000000025a R09: 0000000000000018
[  479.617531] R10: ffffc900006bbe48 R11: 0000000000000235 R12: ffff88011fba4500
[  479.617531] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.617531]  </IRQ>
[  479.617533]  ? cpuidle_enter_state+0x110/0x2e0
[  479.617534]  cpuidle_enter+0x17/0x20
[  479.617536]  call_cpuidle+0x23/0x40
[  479.617536]  do_idle+0x189/0x200
[  479.617537]  cpu_startup_entry+0x1d/0x20
[  479.617539]  start_secondary+0x107/0x130
[  479.617540]  start_cpu+0x14/0x14
[  479.618280] BUG: Bad page state in process swapper/3  pfn:116411
[  479.618281] page:ffffea0004590440 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.618281] flags: 0x17ffffc0000000()
[  479.618282] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.618283] raw: 0000000000000000 0000000300000001 0000000000000000 0000000000000000
[  479.618284] page dumped because: nonzero _count
[  479.618284] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.618297] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.618298] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.618298] Call Trace:
[  479.618300]  <IRQ>
[  479.618302]  dump_stack+0x63/0x8a
[  479.618303]  bad_page+0xc4/0x130
[  479.618304]  check_new_page_bad+0x67/0x80
[  479.618306]  get_page_from_freelist+0x448/0xca0
[  479.618307]  ? tcp_gro_receive+0x259/0x310
[  479.618309]  __alloc_pages_nodemask+0xd0/0x240
[  479.618310]  page_frag_alloc+0xc0/0x1a0
[  479.618312]  __napi_alloc_skb+0x8e/0xf0
[  479.618313]  rtl8169_poll+0x1dd/0x640
[  479.618315]  net_rx_action+0x23c/0x3f0
[  479.618315]  ? rtl8169_interrupt+0x6b/0x70
[  479.618317]  __do_softirq+0x104/0x2cb
[  479.618318]  irq_exit+0xf1/0x100
[  479.618320]  do_IRQ+0x4f/0xd0
[  479.618321]  common_interrupt+0x93/0x93
[  479.618322] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.618323] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.618324] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.618324] RDX: 0000006fab79fde5 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.618325] RBP: ffffc900006bbeb8 R08: 00000000ffffffff R09: 0000000000000008
[  479.618325] R10: ffffc900006bbe48 R11: 000000000000026e R12: ffff88011fba4500
[  479.618326] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.618326]  </IRQ>
[  479.618328]  ? cpuidle_enter_state+0x110/0x2e0
[  479.618329]  cpuidle_enter+0x17/0x20
[  479.618331]  call_cpuidle+0x23/0x40
[  479.618331]  do_idle+0x189/0x200
[  479.618332]  cpu_startup_entry+0x1d/0x20
[  479.618334]  start_secondary+0x107/0x130
[  479.618335]  start_cpu+0x14/0x14
[  479.620004] BUG: Bad page state in process ksoftirqd/1  pfn:116688
[  479.620005] page:ffffea000459a200 count:-45 mapcount:0 mapping:          (null) index:0x0
[  479.620006] flags: 0x17ffffc0000000()
[  479.620007] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffd3ffffffff
[  479.620008] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
[  479.620009] page dumped because: nonzero _count
[  479.620009] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.620025] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.620025] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.620025] Call Trace:
[  479.620028]  dump_stack+0x63/0x8a
[  479.620029]  bad_page+0xc4/0x130
[  479.620031]  check_new_page_bad+0x67/0x80
[  479.620033]  get_page_from_freelist+0x46c/0xca0
[  479.620035]  ? tcp_gro_receive+0x259/0x310
[  479.620037]  __alloc_pages_nodemask+0xd0/0x240
[  479.620039]  page_frag_alloc+0xc0/0x1a0
[  479.620041]  __napi_alloc_skb+0x8e/0xf0
[  479.620043]  rtl8169_poll+0x1dd/0x640
[  479.620045]  net_rx_action+0x23c/0x3f0
[  479.620046]  ? pick_next_task_fair+0x312/0x520
[  479.620048]  __do_softirq+0x104/0x2cb
[  479.620050]  ? smpboot_thread_fn+0x34/0x1f0
[  479.620052]  ? smpboot_thread_fn+0x12d/0x1f0
[  479.620053]  run_ksoftirqd+0x29/0x70
[  479.620055]  smpboot_thread_fn+0x128/0x1f0
[  479.620056]  kthread+0x114/0x150
[  479.620058]  ? sort_range+0x30/0x30
[  479.620059]  ? kthread_create_on_node+0x40/0x40
[  479.620060]  ret_from_fork+0x2c/0x40
[  479.620062] BUG: Bad page state in process ksoftirqd/1  pfn:1178f0
[  479.620063] page:ffffea00045e3c00 count:-65162 mapcount:0 mapping:          (null) index:0x0
[  479.620063] flags: 0x17ffffc0000000()
[  479.620065] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffff00f8ffffffff
[  479.620066] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
[  479.620066] page dumped because: nonzero _count
[  479.620067] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.620082] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.620082] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.620082] Call Trace:
[  479.620084]  dump_stack+0x63/0x8a
[  479.620086]  bad_page+0xc4/0x130
[  479.620087]  check_new_page_bad+0x67/0x80
[  479.620089]  get_page_from_freelist+0x46c/0xca0
[  479.620091]  ? tcp_gro_receive+0x259/0x310
[  479.620093]  __alloc_pages_nodemask+0xd0/0x240
[  479.620095]  page_frag_alloc+0xc0/0x1a0
[  479.620097]  __napi_alloc_skb+0x8e/0xf0
[  479.620098]  rtl8169_poll+0x1dd/0x640
[  479.620100]  net_rx_action+0x23c/0x3f0
[  479.620101]  ? pick_next_task_fair+0x312/0x520
[  479.620103]  __do_softirq+0x104/0x2cb
[  479.620105]  ? smpboot_thread_fn+0x34/0x1f0
[  479.620106]  ? smpboot_thread_fn+0x12d/0x1f0
[  479.620108]  run_ksoftirqd+0x29/0x70
[  479.620109]  smpboot_thread_fn+0x128/0x1f0
[  479.620111]  kthread+0x114/0x150
[  479.620112]  ? sort_range+0x30/0x30
[  479.620113]  ? kthread_create_on_node+0x40/0x40
[  479.620115]  ret_from_fork+0x2c/0x40
[  479.623011] BUG: Bad page state in process ksoftirqd/1  pfn:117a50
[  479.623012] page:ffffea00045e9400 count:-72723 mapcount:0 mapping:          (null) index:0x0
[  479.623013] flags: 0x17ffffc0000000()
[  479.623014] raw: 0017ffffc0000000 0000000000000000 0000000000000000 fffee3b3ffffffff
[  479.623015] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
[  479.623016] page dumped because: nonzero _count
[  479.623016] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.623031] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.623031] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.623032] Call Trace:
[  479.623034]  dump_stack+0x63/0x8a
[  479.623035]  bad_page+0xc4/0x130
[  479.623037]  check_new_page_bad+0x67/0x80
[  479.623038]  get_page_from_freelist+0x46c/0xca0
[  479.623040]  ? tcp_gro_receive+0x259/0x310
[  479.623042]  __alloc_pages_nodemask+0xd0/0x240
[  479.623044]  page_frag_alloc+0xc0/0x1a0
[  479.623046]  __napi_alloc_skb+0x8e/0xf0
[  479.623047]  rtl8169_poll+0x1dd/0x640
[  479.623049]  net_rx_action+0x23c/0x3f0
[  479.623050]  ? pick_next_task_fair+0x4c5/0x520
[  479.623052]  __do_softirq+0x104/0x2cb
[  479.623053]  ? smpboot_thread_fn+0x34/0x1f0
[  479.623055]  ? smpboot_thread_fn+0x12d/0x1f0
[  479.623056]  run_ksoftirqd+0x29/0x70
[  479.623058]  smpboot_thread_fn+0x128/0x1f0
[  479.623059]  kthread+0x114/0x150
[  479.623060]  ? sort_range+0x30/0x30
[  479.623061]  ? kthread_create_on_node+0x40/0x40
[  479.623063]  ret_from_fork+0x2c/0x40
[  479.623064] BUG: Bad page state in process ksoftirqd/1  pfn:1166a4
[  479.623065] page:ffffea000459a900 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.623066] flags: 0x17ffffc0000000()
[  479.623067] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.623068] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.623068] page dumped because: nonzero _count
[  479.623069] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.623082] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.623083] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.623083] Call Trace:
[  479.623084]  dump_stack+0x63/0x8a
[  479.623086]  bad_page+0xc4/0x130
[  479.623087]  check_new_page_bad+0x67/0x80
[  479.623089]  get_page_from_freelist+0x448/0xca0
[  479.623091]  ? tcp_gro_receive+0x259/0x310
[  479.623092]  __alloc_pages_nodemask+0xd0/0x240
[  479.623094]  page_frag_alloc+0xc0/0x1a0
[  479.623096]  __napi_alloc_skb+0x8e/0xf0
[  479.623097]  rtl8169_poll+0x1dd/0x640
[  479.623099]  net_rx_action+0x23c/0x3f0
[  479.623100]  ? pick_next_task_fair+0x4c5/0x520
[  479.623101]  __do_softirq+0x104/0x2cb
[  479.623103]  ? smpboot_thread_fn+0x34/0x1f0
[  479.623104]  ? smpboot_thread_fn+0x12d/0x1f0
[  479.623106]  run_ksoftirqd+0x29/0x70
[  479.623107]  smpboot_thread_fn+0x128/0x1f0
[  479.623109]  kthread+0x114/0x150
[  479.623110]  ? sort_range+0x30/0x30
[  479.623111]  ? kthread_create_on_node+0x40/0x40
[  479.623113]  ret_from_fork+0x2c/0x40
[  507.274837] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [curl:6596]
[  507.282650] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  507.331983] CPU: 3 PID: 6596 Comm: curl Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  507.341396] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  507.349933] task: ffff880100f3cb80 task.stack: ffffc90009f0c000
[  507.356591] RIP: 0010:skb_release_all+0x0/0x30
[  507.361790] RSP: 0018:ffffc90009f0fb90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
[  507.370146] RAX: 0000000000000001 RBX: ffff88011671bc00 RCX: 000000000e9d01da
[  507.378058] RDX: 000000000e9d01d9 RSI: ffff88011fb9e780 RDI: ffff88011671be00
[  507.385962] RBP: ffffc90009f0fbb0 R08: 000000000001e780 R09: ffffffff81854469
[  507.393900] R10: ffffea0004594c00 R11: ffff880100f3cb80 R12: ffff88011671be00
[  507.401840] R13: ffffffff81856a07 R14: ffff88011668f740 R15: ffff88011c203b44
[  507.409778] FS:  00007f21439d5c00(0000) GS:ffff88011fb80000(0000) knlGS:0000000000000000
[  507.418742] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  507.425293] CR2: 000055c5d2c00488 CR3: 0000000116024000 CR4: 00000000001406e0
[  507.433206] Call Trace:
[  507.436432]  ? kfree_skb+0x32/0xa0
[  507.440550]  kfree_skb_list+0x17/0x30
[  507.444942]  skb_release_data+0xfc/0x110
[  507.449578]  ? kfree_skb_list+0x17/0x30
[  507.454059]  skb_release_all+0x24/0x30
[  507.458480]  kfree_skb+0x32/0xa0
[  507.462370]  kfree_skb_list+0x17/0x30
[  507.466695]  skb_release_data+0xfc/0x110
[  507.471245]  ? kfree_skb_list+0x17/0x30
[  507.475745]  skb_release_all+0x24/0x30
[  507.480138]  kfree_skb+0x32/0xa0
[  507.484048]  kfree_skb_list+0x17/0x30
[  507.488362]  skb_release_data+0xfc/0x110
[  507.492915]  skb_release_all+0x24/0x30
[  507.497283]  __kfree_skb+0x12/0x20
[  507.501348]  tcp_recvmsg+0x2ca/0xb20
[  507.505569]  inet_recvmsg+0x3c/0xa0
[  507.509676]  sock_recvmsg+0x3d/0x50
[  507.513810]  SYSC_recvfrom+0xd5/0x140
[  507.518084]  ? ktime_get_ts64+0x4f/0x100
[  507.522626]  SyS_recvfrom+0xe/0x10
[  507.526638]  entry_SYSCALL_64_fastpath+0x1a/0xa9
[  507.531914] RIP: 0033:0x7f214312553f
[  507.536135] RSP: 002b:00007ffcfa06e220 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
[  507.544403] RAX: ffffffffffffffda RBX: 00007f214310fb58 RCX: 00007f214312553f
[  507.552334] RDX: 0000000000004000 RSI: 000055c5d2be8ce0 RDI: 0000000000000003
[  507.560133] RBP: 0000000000002705 R08: 0000000000000000 R09: 0000000000000000
[  507.567962] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f214310fb58
[  507.575786] R13: 0000000000001010 R14: 000055c5d2bff470 R15: 00007f214310fb00
[  507.583563] Code: 74 07 be 01 00 00 00 ff d0 49 8b 7e 08 48 85 ff 74 05 e8 04 01 00 00 4c 89 e7 e8 fc dd ff ff 5b 41 5c 41 5d 41 5e 5d c3 0f 1f 00 <0f> 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 3e dd ff ff 48 83 bb 
[  507.603930] Kernel panic - not syncing: softlockup: hung tasks
[  507.610447] CPU: 3 PID: 6596 Comm: curl Tainted: G    B        L  4.11.0-rc6-01591-g95510ae #1
[  507.619765] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  507.628178] Call Trace:
[  507.631211]  <IRQ>
[  507.633833]  dump_stack+0x63/0x8a
[  507.637725]  panic+0xd5/0x21e
[  507.641304]  watchdog_timer_fn+0x216/0x220
[  507.645974]  ? watchdog_park_threads+0x70/0x70
[  507.651088]  __hrtimer_run_queues+0xdd/0x250
[  507.655925]  hrtimer_interrupt+0xa3/0x1f0
[  507.660492]  ? kfree_skb_list+0x17/0x30
[  507.664939]  local_apic_timer_interrupt+0x38/0x60
[  507.670198]  smp_apic_timer_interrupt+0x38/0x50
[  507.675296]  apic_timer_interrupt+0x93/0xa0
[  507.680044] RIP: 0010:skb_release_all+0x0/0x30
[  507.685001] RSP: 0018:ffffc90009f0fb90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
[  507.693198] RAX: 0000000000000001 RBX: ffff88011671bc00 RCX: 000000000e9d01da
[  507.700923] RDX: 000000000e9d01d9 RSI: ffff88011fb9e780 RDI: ffff88011671be00
[  507.708680] RBP: ffffc90009f0fbb0 R08: 000000000001e780 R09: ffffffff81854469
[  507.716498] R10: ffffea0004594c00 R11: ffff880100f3cb80 R12: ffff88011671be00
[  507.724254] R13: ffffffff81856a07 R14: ffff88011668f740 R15: ffff88011c203b44
[  507.731994]  </IRQ>
[  507.734647]  ? kfree_skb_list+0x17/0x30
[  507.739128]  ? kfree_skbmem+0x59/0x60
[  507.743367]  ? kfree_skb+0x32/0xa0
[  507.747344]  kfree_skb_list+0x17/0x30
[  507.751615]  skb_release_data+0xfc/0x110
[  507.756115]  ? kfree_skb_list+0x17/0x30
[  507.760553]  skb_release_all+0x24/0x30
[  507.764893]  kfree_skb+0x32/0xa0
[  507.768709]  kfree_skb_list+0x17/0x30
[  507.772945]  skb_release_data+0xfc/0x110
[  507.777461]  ? kfree_skb_list+0x17/0x30
[  507.781890]  skb_release_all+0x24/0x30
[  507.786242]  kfree_skb+0x32/0xa0
[  507.790044]  kfree_skb_list+0x17/0x30
[  507.794354]  skb_release_data+0xfc/0x110
[  507.798879]  skb_release_all+0x24/0x30
[  507.803227]  __kfree_skb+0x12/0x20
[  507.807215]  tcp_recvmsg+0x2ca/0xb20
[  507.811359]  inet_recvmsg+0x3c/0xa0
[  507.815397]  sock_recvmsg+0x3d/0x50
[  507.819452]  SYSC_recvfrom+0xd5/0x140
[  507.823656]  ? ktime_get_ts64+0x4f/0x100
[  507.828130]  SyS_recvfrom+0xe/0x10
[  507.832106]  entry_SYSCALL_64_fastpath+0x1a/0xa9
[  507.837280] RIP: 0033:0x7f214312553f
[  507.841354] RSP: 002b:00007ffcfa06e220 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
[  507.849440] RAX: ffffffffffffffda RBX: 00007f214310fb58 RCX: 00007f214312553f
[  507.857101] RDX: 0000000000004000 RSI: 000055c5d2be8ce0 RDI: 0000000000000003
[  507.864817] RBP: 0000000000002705 R08: 0000000000000000 R09: 0000000000000000
[  507.872494] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f214310fb58
[  507.880139] R13: 0000000000001010 R14: 000055c5d2bff470 R15: 00007f214310fb00
[  507.887799] Kernel Offset: disabled


To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Kernel Test Robot

[-- Attachment #2: config-4.11.0-rc6-01591-g95510ae --]
[-- Type: text/plain, Size: 158144 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/x86_64 4.11.0-rc6 Kernel Configuration
#
CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=28
CONFIG_ARCH_MMAP_RND_BITS_MAX=32
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ZONE_DMA32=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_HAVE_INTEL_TXT=y
CONFIG_X86_64_SMP=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_PGTABLE_LEVELS=4
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
CONFIG_CROSS_MEMORY_ATTACH=y
CONFIG_FHANDLE=y
CONFIG_USELIB=y
CONFIG_AUDIT=y
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_WATCH=y
CONFIG_AUDIT_TREE=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_GENERIC_MSI_IRQ=y
CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
# CONFIG_IRQ_DOMAIN_DEBUG is not set
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y

#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
# CONFIG_NO_HZ_IDLE is not set
CONFIG_NO_HZ_FULL=y
# CONFIG_NO_HZ_FULL_ALL is not set
# CONFIG_NO_HZ_FULL_SYSIDLE is not set
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y

#
# CPU/Task time and stats accounting
#
CONFIG_VIRT_CPU_ACCOUNTING=y
CONFIG_VIRT_CPU_ACCOUNTING_GEN=y
# CONFIG_IRQ_TIME_ACCOUNTING is not set
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TASKS_RCU=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_CONTEXT_TRACKING=y
# CONFIG_CONTEXT_TRACKING_FORCE is not set
# CONFIG_TREE_RCU_TRACE is not set
CONFIG_RCU_NOCB_CPU=y
# CONFIG_RCU_NOCB_CPU_NONE is not set
# CONFIG_RCU_NOCB_CPU_ZERO is not set
CONFIG_RCU_NOCB_CPU_ALL=y
CONFIG_BUILD_BIN2C=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=19
CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
CONFIG_ARCH_SUPPORTS_INT128=y
CONFIG_NUMA_BALANCING=y
CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y
CONFIG_CGROUPS=y
CONFIG_PAGE_COUNTER=y
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
CONFIG_MEMCG_SWAP_ENABLED=y
CONFIG_BLK_CGROUP=y
# CONFIG_DEBUG_BLK_CGROUP is not set
CONFIG_CGROUP_WRITEBACK=y
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
CONFIG_CFS_BANDWIDTH=y
CONFIG_RT_GROUP_SCHED=y
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_RDMA is not set
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_HUGETLB=y
CONFIG_CPUSETS=y
CONFIG_PROC_PID_CPUSET=y
CONFIG_CGROUP_DEVICE=y
# CONFIG_CGROUP_CPUACCT is not set
CONFIG_CGROUP_PERF=y
# CONFIG_CGROUP_BPF is not set
# CONFIG_CGROUP_DEBUG is not set
CONFIG_SOCK_CGROUP_DATA=y
CONFIG_CHECKPOINT_RESTORE=y
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_NET_NS=y
CONFIG_SCHED_AUTOGROUP=y
# CONFIG_SYSFS_DEPRECATED is not set
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_XZ=y
CONFIG_RD_LZO=y
CONFIG_RD_LZ4=y
CONFIG_INITRAMFS_COMPRESSION=".gz"
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_HAVE_UID16=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_BPF=y
CONFIG_EXPERT=y
CONFIG_UID16=y
CONFIG_MULTIUSER=y
CONFIG_SGETMASK_SYSCALL=y
CONFIG_SYSFS_SYSCALL=y
# CONFIG_SYSCTL_SYSCALL is not set
CONFIG_POSIX_TIMERS=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_KALLSYMS_ABSOLUTE_PERCPU=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
CONFIG_PRINTK=y
CONFIG_PRINTK_NMI=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_BPF_SYSCALL=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_USERFAULTFD=y
CONFIG_PCI_QUIRKS=y
CONFIG_MEMBARRIER=y
CONFIG_EMBEDDED=y
CONFIG_HAVE_PERF_EVENTS=y
# CONFIG_PC104 is not set

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_MEMCG_SYSFS_ON is not set
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
# CONFIG_SLAB_FREELIST_RANDOM is not set
CONFIG_SLUB_CPU_PARTIAL=y
# CONFIG_SYSTEM_DATA_VERIFICATION is not set
CONFIG_PROFILING=y
CONFIG_TRACEPOINTS=y
CONFIG_KEXEC_CORE=y
CONFIG_OPROFILE=m
CONFIG_OPROFILE_EVENT_MULTIPLEX=y
CONFIG_HAVE_OPROFILE=y
CONFIG_OPROFILE_NMI_TIMER=y
CONFIG_KPROBES=y
CONFIG_JUMP_LABEL=y
# CONFIG_STATIC_KEYS_SELFTEST is not set
CONFIG_OPTPROBES=y
CONFIG_KPROBES_ON_FTRACE=y
# CONFIG_UPROBES is not set
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_KRETPROBES=y
CONFIG_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_HAVE_NMI=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP_FILTER=y
CONFIG_HAVE_GCC_PLUGINS=y
# CONFIG_GCC_PLUGINS is not set
CONFIG_HAVE_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR is not set
CONFIG_CC_STACKPROTECTOR_NONE=y
# CONFIG_CC_STACKPROTECTOR_REGULAR is not set
# CONFIG_CC_STACKPROTECTOR_STRONG is not set
CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=28
CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
CONFIG_HAVE_COPY_THREAD_TLS=y
CONFIG_HAVE_STACK_VALIDATION=y
# CONFIG_HAVE_ARCH_HASH is not set
# CONFIG_ISA_BUS_API is not set
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_COMPAT_OLD_SIGACTION=y
# CONFIG_CPU_NO_EFFICIENT_FFS is not set
CONFIG_HAVE_ARCH_VMAP_STACK=y
CONFIG_VMAP_STACK=y
# CONFIG_ARCH_OPTIONAL_KERNEL_RWX is not set
# CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT is not set
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
CONFIG_STRICT_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
CONFIG_STRICT_MODULE_RWX=y

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
# CONFIG_MODULE_COMPRESS is not set
# CONFIG_TRIM_UNUSED_KSYMS is not set
CONFIG_MODULES_TREE_LOOKUP=y
CONFIG_BLOCK=y
CONFIG_BLK_SCSI_REQUEST=y
CONFIG_BLK_DEV_BSG=y
CONFIG_BLK_DEV_BSGLIB=y
CONFIG_BLK_DEV_INTEGRITY=y
# CONFIG_BLK_DEV_ZONED is not set
CONFIG_BLK_DEV_THROTTLING=y
# CONFIG_BLK_CMDLINE_PARSER is not set
# CONFIG_BLK_WBT is not set
CONFIG_BLK_DEBUG_FS=y
# CONFIG_BLK_SED_OPAL is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_AIX_PARTITION is not set
CONFIG_OSF_PARTITION=y
CONFIG_AMIGA_PARTITION=y
# CONFIG_ATARI_PARTITION is not set
CONFIG_MAC_PARTITION=y
CONFIG_MSDOS_PARTITION=y
CONFIG_BSD_DISKLABEL=y
CONFIG_MINIX_SUBPARTITION=y
CONFIG_SOLARIS_X86_PARTITION=y
CONFIG_UNIXWARE_DISKLABEL=y
# CONFIG_LDM_PARTITION is not set
CONFIG_SGI_PARTITION=y
# CONFIG_ULTRIX_PARTITION is not set
CONFIG_SUN_PARTITION=y
CONFIG_KARMA_PARTITION=y
CONFIG_EFI_PARTITION=y
# CONFIG_SYSV68_PARTITION is not set
# CONFIG_CMDLINE_PARTITION is not set
CONFIG_BLOCK_COMPAT=y
CONFIG_BLK_MQ_PCI=y
CONFIG_BLK_MQ_VIRTIO=y

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_DEFAULT_DEADLINE=y
# CONFIG_DEFAULT_CFQ is not set
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="deadline"
CONFIG_MQ_IOSCHED_DEADLINE=y
CONFIG_PREEMPT_NOTIFIERS=y
CONFIG_PADATA=y
CONFIG_ASN1=y
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_QUEUED_RWLOCKS=y
CONFIG_FREEZER=y

#
# Processor type and features
#
CONFIG_ZONE_DMA=y
CONFIG_SMP=y
CONFIG_X86_FEATURE_NAMES=y
CONFIG_X86_FAST_FEATURE_TESTS=y
CONFIG_X86_X2APIC=y
CONFIG_X86_MPPARSE=y
# CONFIG_GOLDFISH is not set
CONFIG_INTEL_RDT_A=y
CONFIG_X86_EXTENDED_PLATFORM=y
# CONFIG_X86_NUMACHIP is not set
# CONFIG_X86_VSMP is not set
CONFIG_X86_UV=y
# CONFIG_X86_GOLDFISH is not set
# CONFIG_X86_INTEL_MID is not set
CONFIG_X86_INTEL_LPSS=y
# CONFIG_X86_AMD_PLATFORM_DEVICE is not set
CONFIG_IOSF_MBI=y
# CONFIG_IOSF_MBI_DEBUG is not set
CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
# CONFIG_SCHED_OMIT_FRAME_POINTER is not set
CONFIG_HYPERVISOR_GUEST=y
CONFIG_PARAVIRT=y
# CONFIG_PARAVIRT_DEBUG is not set
CONFIG_PARAVIRT_SPINLOCKS=y
# CONFIG_QUEUED_LOCK_STAT is not set
CONFIG_XEN=y
CONFIG_XEN_DOM0=y
CONFIG_XEN_PVHVM=y
CONFIG_XEN_512GB=y
CONFIG_XEN_SAVE_RESTORE=y
# CONFIG_XEN_DEBUG_FS is not set
# CONFIG_XEN_PVH is not set
CONFIG_KVM_GUEST=y
# CONFIG_KVM_DEBUG_FS is not set
CONFIG_PARAVIRT_TIME_ACCOUNTING=y
CONFIG_PARAVIRT_CLOCK=y
CONFIG_NO_BOOTMEM=y
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
# CONFIG_PROCESSOR_SELECT is not set
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
CONFIG_GART_IOMMU=y
# CONFIG_CALGARY_IOMMU is not set
CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
CONFIG_MAXSMP=y
CONFIG_NR_CPUS=8192
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
CONFIG_SCHED_MC_PRIO=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
CONFIG_PREEMPT_COUNT=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
CONFIG_X86_MCE_AMD=y
CONFIG_X86_MCE_THRESHOLD=y
CONFIG_X86_MCE_INJECT=m
CONFIG_X86_THERMAL_VECTOR=y

#
# Performance monitoring
#
CONFIG_PERF_EVENTS_INTEL_UNCORE=y
CONFIG_PERF_EVENTS_INTEL_RAPL=y
CONFIG_PERF_EVENTS_INTEL_CSTATE=y
# CONFIG_PERF_EVENTS_AMD_POWER is not set
# CONFIG_VM86 is not set
CONFIG_X86_16BIT=y
CONFIG_X86_ESPFIX64=y
CONFIG_X86_VSYSCALL_EMULATION=y
CONFIG_I8K=m
CONFIG_MICROCODE=y
CONFIG_MICROCODE_INTEL=y
CONFIG_MICROCODE_AMD=y
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_X86_DIRECT_GBPAGES=y
CONFIG_NUMA=y
CONFIG_AMD_NUMA=y
CONFIG_X86_64_ACPI_NUMA=y
CONFIG_NODES_SPAN_OTHER_NODES=y
# CONFIG_NUMA_EMU is not set
CONFIG_NODES_SHIFT=10
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_MEMORY_PROBE=y
CONFIG_ARCH_PROC_KCORE_TEXT=y
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_NEED_MULTIPLE_NODES=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
CONFIG_ARCH_DISCARD_MEMBLOCK=y
CONFIG_MEMORY_ISOLATION=y
CONFIG_MOVABLE_NODE=y
CONFIG_HAVE_BOOTMEM_INFO_NODE=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTPLUG_SPARSE=y
# CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE is not set
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
CONFIG_MEMORY_BALLOON=y
CONFIG_BALLOON_COMPACTION=y
CONFIG_COMPACTION=y
CONFIG_MIGRATION=y
CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_MMU_NOTIFIER=y
CONFIG_KSM=y
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
CONFIG_MEMORY_FAILURE=y
CONFIG_HWPOISON_INJECT=m
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
# CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set
CONFIG_TRANSPARENT_HUGE_PAGECACHE=y
CONFIG_CLEANCACHE=y
CONFIG_FRONTSWAP=y
CONFIG_CMA=y
# CONFIG_CMA_DEBUG is not set
# CONFIG_CMA_DEBUGFS is not set
CONFIG_CMA_AREAS=7
# CONFIG_MEM_SOFT_DIRTY is not set
CONFIG_ZSWAP=y
CONFIG_ZPOOL=y
CONFIG_ZBUD=y
# CONFIG_Z3FOLD is not set
CONFIG_ZSMALLOC=y
# CONFIG_PGTABLE_MAPPING is not set
# CONFIG_ZSMALLOC_STAT is not set
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT=y
# CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ZONE_DEVICE=y
CONFIG_FRAME_VECTOR=y
CONFIG_ARCH_USES_HIGH_VMA_FLAGS=y
CONFIG_ARCH_HAS_PKEYS=y
CONFIG_X86_PMEM_LEGACY_DEVICE=y
CONFIG_X86_PMEM_LEGACY=m
CONFIG_X86_CHECK_BIOS_CORRUPTION=y
# CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK is not set
CONFIG_X86_RESERVE_LOW=64
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0
CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
CONFIG_ARCH_RANDOM=y
CONFIG_X86_SMAP=y
# CONFIG_X86_INTEL_MPX is not set
CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y
CONFIG_EFI=y
CONFIG_EFI_STUB=y
# CONFIG_EFI_MIXED is not set
CONFIG_SECCOMP=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
CONFIG_KEXEC=y
# CONFIG_KEXEC_FILE is not set
CONFIG_CRASH_DUMP=y
CONFIG_KEXEC_JUMP=y
CONFIG_PHYSICAL_START=0x1000000
CONFIG_RELOCATABLE=y
# CONFIG_RANDOMIZE_BASE is not set
CONFIG_PHYSICAL_ALIGN=0x1000000
CONFIG_HOTPLUG_CPU=y
# CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
# CONFIG_DEBUG_HOTPLUG_CPU0 is not set
# CONFIG_COMPAT_VDSO is not set
# CONFIG_LEGACY_VSYSCALL_NATIVE is not set
CONFIG_LEGACY_VSYSCALL_EMULATE=y
# CONFIG_LEGACY_VSYSCALL_NONE is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_MODIFY_LDT_SYSCALL=y
CONFIG_HAVE_LIVEPATCH=y
# CONFIG_LIVEPATCH is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
CONFIG_USE_PERCPU_NUMA_NODE_ID=y

#
# Power management and ACPI options
#
CONFIG_ARCH_HIBERNATION_HEADER=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_SUSPEND_SKIP_SYNC is not set
CONFIG_HIBERNATE_CALLBACKS=y
CONFIG_HIBERNATION=y
CONFIG_PM_STD_PARTITION=""
CONFIG_PM_SLEEP=y
CONFIG_PM_SLEEP_SMP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
CONFIG_PM_DEBUG=y
CONFIG_PM_ADVANCED_DEBUG=y
CONFIG_PM_TEST_SUSPEND=y
CONFIG_PM_SLEEP_DEBUG=y
# CONFIG_DPM_WATCHDOG is not set
# CONFIG_PM_TRACE_RTC is not set
CONFIG_PM_CLK=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_ACPI=y
CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
# CONFIG_ACPI_DEBUGGER is not set
CONFIG_ACPI_SLEEP=y
# CONFIG_ACPI_PROCFS_POWER is not set
CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=y
CONFIG_ACPI_EC_DEBUGFS=m
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=m
CONFIG_ACPI_FAN=y
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_CPU_FREQ_PSS=y
CONFIG_ACPI_PROCESSOR_CSTATE=y
CONFIG_ACPI_PROCESSOR_IDLE=y
CONFIG_ACPI_CPPC_LIB=y
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_IPMI=m
CONFIG_ACPI_HOTPLUG_CPU=y
CONFIG_ACPI_PROCESSOR_AGGREGATOR=m
CONFIG_ACPI_THERMAL=y
CONFIG_ACPI_NUMA=y
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y
CONFIG_ACPI_TABLE_UPGRADE=y
CONFIG_ACPI_DEBUG=y
CONFIG_ACPI_PCI_SLOT=y
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
CONFIG_ACPI_HOTPLUG_MEMORY=y
CONFIG_ACPI_HOTPLUG_IOAPIC=y
CONFIG_ACPI_SBS=m
CONFIG_ACPI_HED=y
CONFIG_ACPI_CUSTOM_METHOD=m
CONFIG_ACPI_BGRT=y
# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set
CONFIG_ACPI_NFIT=m
# CONFIG_ACPI_NFIT_DEBUG is not set
CONFIG_HAVE_ACPI_APEI=y
CONFIG_HAVE_ACPI_APEI_NMI=y
CONFIG_ACPI_APEI=y
CONFIG_ACPI_APEI_GHES=y
CONFIG_ACPI_APEI_PCIEAER=y
CONFIG_ACPI_APEI_MEMORY_FAILURE=y
CONFIG_ACPI_APEI_EINJ=m
# CONFIG_ACPI_APEI_ERST_DEBUG is not set
# CONFIG_DPTF_POWER is not set
# CONFIG_ACPI_EXTLOG is not set
# CONFIG_PMIC_OPREGION is not set
# CONFIG_ACPI_CONFIGFS is not set
CONFIG_SFI=y

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_ATTR_SET=y
CONFIG_CPU_FREQ_GOV_COMMON=y
# CONFIG_CPU_FREQ_STAT is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
# CONFIG_CPU_FREQ_GOV_SCHEDUTIL is not set

#
# CPU frequency scaling drivers
#
CONFIG_X86_INTEL_PSTATE=y
CONFIG_X86_PCC_CPUFREQ=m
CONFIG_X86_ACPI_CPUFREQ=m
CONFIG_X86_ACPI_CPUFREQ_CPB=y
CONFIG_X86_POWERNOW_K8=m
CONFIG_X86_AMD_FREQ_SENSITIVITY=m
# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
CONFIG_X86_P4_CLOCKMOD=m

#
# shared options
#
CONFIG_X86_SPEEDSTEP_LIB=m

#
# CPU Idle
#
CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_GOV_LADDER is not set
CONFIG_CPU_IDLE_GOV_MENU=y
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
CONFIG_INTEL_IDLE=y

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_XEN=y
CONFIG_PCI_DOMAINS=y
# CONFIG_PCI_CNB20LE_QUIRK is not set
CONFIG_PCIEPORTBUS=y
CONFIG_HOTPLUG_PCI_PCIE=y
CONFIG_PCIEAER=y
CONFIG_PCIE_ECRC=y
CONFIG_PCIEAER_INJECT=m
CONFIG_PCIEASPM=y
# CONFIG_PCIEASPM_DEBUG is not set
CONFIG_PCIEASPM_DEFAULT=y
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
# CONFIG_PCIEASPM_PERFORMANCE is not set
CONFIG_PCIE_PME=y
# CONFIG_PCIE_DPC is not set
# CONFIG_PCIE_PTM is not set
CONFIG_PCI_BUS_ADDR_T_64BIT=y
CONFIG_PCI_MSI=y
CONFIG_PCI_MSI_IRQ_DOMAIN=y
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_REALLOC_ENABLE_AUTO is not set
CONFIG_PCI_STUB=y
# CONFIG_XEN_PCIDEV_FRONTEND is not set
CONFIG_HT_IRQ=y
CONFIG_PCI_ATS=y
CONFIG_PCI_IOV=y
CONFIG_PCI_PRI=y
CONFIG_PCI_PASID=y
CONFIG_PCI_LABEL=y
# CONFIG_PCI_HYPERV is not set
CONFIG_HOTPLUG_PCI=y
CONFIG_HOTPLUG_PCI_ACPI=y
CONFIG_HOTPLUG_PCI_ACPI_IBM=m
# CONFIG_HOTPLUG_PCI_CPCI is not set
CONFIG_HOTPLUG_PCI_SHPC=m

#
# DesignWare PCI Core Support
#
# CONFIG_PCIE_DW_PLAT is not set

#
# PCI host controller drivers
#
# CONFIG_VMD is not set
# CONFIG_ISA_BUS is not set
CONFIG_ISA_DMA_API=y
CONFIG_AMD_NB=y
CONFIG_PCCARD=y
# CONFIG_PCMCIA is not set
CONFIG_CARDBUS=y

#
# PC-card bridges
#
CONFIG_YENTA=m
CONFIG_YENTA_O2=y
CONFIG_YENTA_RICOH=y
CONFIG_YENTA_TI=y
CONFIG_YENTA_ENE_TUNE=y
CONFIG_YENTA_TOSHIBA=y
# CONFIG_RAPIDIO is not set
# CONFIG_X86_SYSFB is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
# CONFIG_HAVE_AOUT is not set
CONFIG_BINFMT_MISC=m
CONFIG_COREDUMP=y
CONFIG_IA32_EMULATION=y
# CONFIG_IA32_AOUT is not set
# CONFIG_X86_X32 is not set
CONFIG_COMPAT_32=y
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_SYSVIPC_COMPAT=y
CONFIG_KEYS_COMPAT=y
CONFIG_X86_DEV_DMA_OPS=y
CONFIG_NET=y
CONFIG_COMPAT_NETLINK_MESSAGES=y
CONFIG_NET_INGRESS=y
CONFIG_NET_EGRESS=y

#
# Networking options
#
CONFIG_PACKET=y
CONFIG_PACKET_DIAG=m
CONFIG_UNIX=y
CONFIG_UNIX_DIAG=m
CONFIG_XFRM=y
CONFIG_XFRM_ALGO=y
CONFIG_XFRM_USER=y
CONFIG_XFRM_SUB_POLICY=y
CONFIG_XFRM_MIGRATE=y
CONFIG_XFRM_STATISTICS=y
CONFIG_XFRM_IPCOMP=m
CONFIG_NET_KEY=m
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_FIB_TRIE_STATS=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_IP_ROUTE_CLASSID=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
# CONFIG_IP_PNP_BOOTP is not set
# CONFIG_IP_PNP_RARP is not set
CONFIG_NET_IPIP=m
CONFIG_NET_IPGRE_DEMUX=m
CONFIG_NET_IP_TUNNEL=m
CONFIG_NET_IPGRE=m
CONFIG_NET_IPGRE_BROADCAST=y
CONFIG_IP_MROUTE=y
CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
CONFIG_SYN_COOKIES=y
CONFIG_NET_IPVTI=m
CONFIG_NET_UDP_TUNNEL=m
# CONFIG_NET_FOU is not set
# CONFIG_NET_FOU_IP_TUNNELS is not set
CONFIG_INET_AH=m
CONFIG_INET_ESP=m
# CONFIG_INET_ESP_OFFLOAD is not set
CONFIG_INET_IPCOMP=m
CONFIG_INET_XFRM_TUNNEL=m
CONFIG_INET_TUNNEL=m
CONFIG_INET_XFRM_MODE_TRANSPORT=m
CONFIG_INET_XFRM_MODE_TUNNEL=m
CONFIG_INET_XFRM_MODE_BEET=m
CONFIG_INET_DIAG=m
CONFIG_INET_TCP_DIAG=m
CONFIG_INET_UDP_DIAG=m
# CONFIG_INET_RAW_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not set
CONFIG_TCP_CONG_ADVANCED=y
CONFIG_TCP_CONG_BIC=m
CONFIG_TCP_CONG_CUBIC=y
CONFIG_TCP_CONG_WESTWOOD=m
CONFIG_TCP_CONG_HTCP=m
CONFIG_TCP_CONG_HSTCP=m
CONFIG_TCP_CONG_HYBLA=m
CONFIG_TCP_CONG_VEGAS=m
# CONFIG_TCP_CONG_NV is not set
CONFIG_TCP_CONG_SCALABLE=m
CONFIG_TCP_CONG_LP=m
CONFIG_TCP_CONG_VENO=m
CONFIG_TCP_CONG_YEAH=m
CONFIG_TCP_CONG_ILLINOIS=m
# CONFIG_TCP_CONG_DCTCP is not set
# CONFIG_TCP_CONG_CDG is not set
# CONFIG_TCP_CONG_BBR is not set
CONFIG_DEFAULT_CUBIC=y
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_TCP_CONG="cubic"
CONFIG_TCP_MD5SIG=y
CONFIG_IPV6=y
CONFIG_IPV6_ROUTER_PREF=y
CONFIG_IPV6_ROUTE_INFO=y
CONFIG_IPV6_OPTIMISTIC_DAD=y
CONFIG_INET6_AH=m
CONFIG_INET6_ESP=m
# CONFIG_INET6_ESP_OFFLOAD is not set
CONFIG_INET6_IPCOMP=m
CONFIG_IPV6_MIP6=m
# CONFIG_IPV6_ILA is not set
CONFIG_INET6_XFRM_TUNNEL=m
CONFIG_INET6_TUNNEL=m
CONFIG_INET6_XFRM_MODE_TRANSPORT=m
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=m
# CONFIG_IPV6_VTI is not set
CONFIG_IPV6_SIT=m
CONFIG_IPV6_SIT_6RD=y
CONFIG_IPV6_NDISC_NODETYPE=y
CONFIG_IPV6_TUNNEL=m
# CONFIG_IPV6_GRE is not set
# CONFIG_IPV6_FOU is not set
# CONFIG_IPV6_FOU_TUNNEL is not set
CONFIG_IPV6_MULTIPLE_TABLES=y
# CONFIG_IPV6_SUBTREES is not set
CONFIG_IPV6_MROUTE=y
CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y
CONFIG_IPV6_PIMSM_V2=y
# CONFIG_IPV6_SEG6_LWTUNNEL is not set
# CONFIG_IPV6_SEG6_HMAC is not set
CONFIG_NETLABEL=y
CONFIG_NETWORK_SECMARK=y
CONFIG_NET_PTP_CLASSIFY=y
CONFIG_NETWORK_PHY_TIMESTAMPING=y
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
CONFIG_NETFILTER_ADVANCED=y
CONFIG_BRIDGE_NETFILTER=m

#
# Core Netfilter Configuration
#
CONFIG_NETFILTER_INGRESS=y
CONFIG_NETFILTER_NETLINK=m
CONFIG_NETFILTER_NETLINK_ACCT=m
CONFIG_NETFILTER_NETLINK_QUEUE=m
CONFIG_NETFILTER_NETLINK_LOG=m
CONFIG_NF_CONNTRACK=m
CONFIG_NF_LOG_COMMON=m
# CONFIG_NF_LOG_NETDEV is not set
CONFIG_NF_CONNTRACK_MARK=y
CONFIG_NF_CONNTRACK_SECMARK=y
CONFIG_NF_CONNTRACK_ZONES=y
CONFIG_NF_CONNTRACK_PROCFS=y
CONFIG_NF_CONNTRACK_EVENTS=y
# CONFIG_NF_CONNTRACK_TIMEOUT is not set
CONFIG_NF_CONNTRACK_TIMESTAMP=y
CONFIG_NF_CONNTRACK_LABELS=y
CONFIG_NF_CT_PROTO_DCCP=y
CONFIG_NF_CT_PROTO_GRE=m
CONFIG_NF_CT_PROTO_SCTP=y
CONFIG_NF_CT_PROTO_UDPLITE=y
CONFIG_NF_CONNTRACK_AMANDA=m
CONFIG_NF_CONNTRACK_FTP=m
CONFIG_NF_CONNTRACK_H323=m
CONFIG_NF_CONNTRACK_IRC=m
CONFIG_NF_CONNTRACK_BROADCAST=m
CONFIG_NF_CONNTRACK_NETBIOS_NS=m
CONFIG_NF_CONNTRACK_SNMP=m
CONFIG_NF_CONNTRACK_PPTP=m
CONFIG_NF_CONNTRACK_SANE=m
CONFIG_NF_CONNTRACK_SIP=m
CONFIG_NF_CONNTRACK_TFTP=m
CONFIG_NF_CT_NETLINK=m
# CONFIG_NF_CT_NETLINK_TIMEOUT is not set
# CONFIG_NETFILTER_NETLINK_GLUE_CT is not set
CONFIG_NF_NAT=m
CONFIG_NF_NAT_NEEDED=y
CONFIG_NF_NAT_PROTO_DCCP=y
CONFIG_NF_NAT_PROTO_UDPLITE=y
CONFIG_NF_NAT_PROTO_SCTP=y
CONFIG_NF_NAT_AMANDA=m
CONFIG_NF_NAT_FTP=m
CONFIG_NF_NAT_IRC=m
CONFIG_NF_NAT_SIP=m
CONFIG_NF_NAT_TFTP=m
CONFIG_NF_NAT_REDIRECT=m
CONFIG_NETFILTER_SYNPROXY=m
CONFIG_NF_TABLES=m
# CONFIG_NF_TABLES_INET is not set
# CONFIG_NF_TABLES_NETDEV is not set
CONFIG_NFT_EXTHDR=m
CONFIG_NFT_META=m
# CONFIG_NFT_RT is not set
# CONFIG_NFT_NUMGEN is not set
CONFIG_NFT_CT=m
# CONFIG_NFT_SET_RBTREE is not set
# CONFIG_NFT_SET_HASH is not set
# CONFIG_NFT_SET_BITMAP is not set
CONFIG_NFT_COUNTER=m
CONFIG_NFT_LOG=m
CONFIG_NFT_LIMIT=m
# CONFIG_NFT_MASQ is not set
# CONFIG_NFT_REDIR is not set
CONFIG_NFT_NAT=m
# CONFIG_NFT_OBJREF is not set
# CONFIG_NFT_QUEUE is not set
# CONFIG_NFT_QUOTA is not set
# CONFIG_NFT_REJECT is not set
CONFIG_NFT_COMPAT=m
CONFIG_NFT_HASH=m
CONFIG_NETFILTER_XTABLES=y

#
# Xtables combined modules
#
CONFIG_NETFILTER_XT_MARK=m
CONFIG_NETFILTER_XT_CONNMARK=m
CONFIG_NETFILTER_XT_SET=m

#
# Xtables targets
#
CONFIG_NETFILTER_XT_TARGET_AUDIT=m
CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=m
CONFIG_NETFILTER_XT_TARGET_CT=m
CONFIG_NETFILTER_XT_TARGET_DSCP=m
CONFIG_NETFILTER_XT_TARGET_HL=m
CONFIG_NETFILTER_XT_TARGET_HMARK=m
CONFIG_NETFILTER_XT_TARGET_IDLETIMER=m
CONFIG_NETFILTER_XT_TARGET_LED=m
CONFIG_NETFILTER_XT_TARGET_LOG=m
CONFIG_NETFILTER_XT_TARGET_MARK=m
CONFIG_NETFILTER_XT_NAT=m
CONFIG_NETFILTER_XT_TARGET_NETMAP=m
CONFIG_NETFILTER_XT_TARGET_NFLOG=m
CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
CONFIG_NETFILTER_XT_TARGET_RATEEST=m
CONFIG_NETFILTER_XT_TARGET_REDIRECT=m
CONFIG_NETFILTER_XT_TARGET_TEE=m
CONFIG_NETFILTER_XT_TARGET_TPROXY=m
CONFIG_NETFILTER_XT_TARGET_TRACE=m
CONFIG_NETFILTER_XT_TARGET_SECMARK=m
CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m

#
# Xtables matches
#
CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
CONFIG_NETFILTER_XT_MATCH_BPF=m
# CONFIG_NETFILTER_XT_MATCH_CGROUP is not set
CONFIG_NETFILTER_XT_MATCH_CLUSTER=m
CONFIG_NETFILTER_XT_MATCH_COMMENT=m
CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
CONFIG_NETFILTER_XT_MATCH_CONNLABEL=m
CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
CONFIG_NETFILTER_XT_MATCH_CPU=m
CONFIG_NETFILTER_XT_MATCH_DCCP=m
CONFIG_NETFILTER_XT_MATCH_DEVGROUP=m
CONFIG_NETFILTER_XT_MATCH_DSCP=m
CONFIG_NETFILTER_XT_MATCH_ECN=m
CONFIG_NETFILTER_XT_MATCH_ESP=m
CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
CONFIG_NETFILTER_XT_MATCH_HELPER=m
CONFIG_NETFILTER_XT_MATCH_HL=m
# CONFIG_NETFILTER_XT_MATCH_IPCOMP is not set
CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
CONFIG_NETFILTER_XT_MATCH_IPVS=m
CONFIG_NETFILTER_XT_MATCH_L2TP=m
CONFIG_NETFILTER_XT_MATCH_LENGTH=m
CONFIG_NETFILTER_XT_MATCH_LIMIT=m
CONFIG_NETFILTER_XT_MATCH_MAC=m
CONFIG_NETFILTER_XT_MATCH_MARK=m
CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
CONFIG_NETFILTER_XT_MATCH_NFACCT=m
CONFIG_NETFILTER_XT_MATCH_OSF=m
CONFIG_NETFILTER_XT_MATCH_OWNER=m
CONFIG_NETFILTER_XT_MATCH_POLICY=m
CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
CONFIG_NETFILTER_XT_MATCH_QUOTA=m
CONFIG_NETFILTER_XT_MATCH_RATEEST=m
CONFIG_NETFILTER_XT_MATCH_REALM=m
CONFIG_NETFILTER_XT_MATCH_RECENT=m
CONFIG_NETFILTER_XT_MATCH_SCTP=m
CONFIG_NETFILTER_XT_MATCH_STATE=m
CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
CONFIG_NETFILTER_XT_MATCH_STRING=m
CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
CONFIG_NETFILTER_XT_MATCH_TIME=m
CONFIG_NETFILTER_XT_MATCH_U32=m
CONFIG_IP_SET=m
CONFIG_IP_SET_MAX=256
CONFIG_IP_SET_BITMAP_IP=m
CONFIG_IP_SET_BITMAP_IPMAC=m
CONFIG_IP_SET_BITMAP_PORT=m
CONFIG_IP_SET_HASH_IP=m
# CONFIG_IP_SET_HASH_IPMARK is not set
CONFIG_IP_SET_HASH_IPPORT=m
CONFIG_IP_SET_HASH_IPPORTIP=m
CONFIG_IP_SET_HASH_IPPORTNET=m
# CONFIG_IP_SET_HASH_IPMAC is not set
# CONFIG_IP_SET_HASH_MAC is not set
# CONFIG_IP_SET_HASH_NETPORTNET is not set
CONFIG_IP_SET_HASH_NET=m
# CONFIG_IP_SET_HASH_NETNET is not set
CONFIG_IP_SET_HASH_NETPORT=m
CONFIG_IP_SET_HASH_NETIFACE=m
CONFIG_IP_SET_LIST_SET=m
CONFIG_IP_VS=m
CONFIG_IP_VS_IPV6=y
# CONFIG_IP_VS_DEBUG is not set
CONFIG_IP_VS_TAB_BITS=12

#
# IPVS transport protocol load balancing support
#
CONFIG_IP_VS_PROTO_TCP=y
CONFIG_IP_VS_PROTO_UDP=y
CONFIG_IP_VS_PROTO_AH_ESP=y
CONFIG_IP_VS_PROTO_ESP=y
CONFIG_IP_VS_PROTO_AH=y
CONFIG_IP_VS_PROTO_SCTP=y

#
# IPVS scheduler
#
CONFIG_IP_VS_RR=m
CONFIG_IP_VS_WRR=m
CONFIG_IP_VS_LC=m
CONFIG_IP_VS_WLC=m
# CONFIG_IP_VS_FO is not set
# CONFIG_IP_VS_OVF is not set
CONFIG_IP_VS_LBLC=m
CONFIG_IP_VS_LBLCR=m
CONFIG_IP_VS_DH=m
CONFIG_IP_VS_SH=m
CONFIG_IP_VS_SED=m
CONFIG_IP_VS_NQ=m

#
# IPVS SH scheduler
#
CONFIG_IP_VS_SH_TAB_BITS=8

#
# IPVS application helper
#
CONFIG_IP_VS_FTP=m
CONFIG_IP_VS_NFCT=y
CONFIG_IP_VS_PE_SIP=m

#
# IP: Netfilter Configuration
#
CONFIG_NF_DEFRAG_IPV4=m
CONFIG_NF_CONNTRACK_IPV4=m
# CONFIG_NF_SOCKET_IPV4 is not set
CONFIG_NF_TABLES_IPV4=m
CONFIG_NFT_CHAIN_ROUTE_IPV4=m
# CONFIG_NFT_REJECT_IPV4 is not set
# CONFIG_NFT_DUP_IPV4 is not set
# CONFIG_NFT_FIB_IPV4 is not set
# CONFIG_NF_TABLES_ARP is not set
CONFIG_NF_DUP_IPV4=m
# CONFIG_NF_LOG_ARP is not set
CONFIG_NF_LOG_IPV4=m
CONFIG_NF_REJECT_IPV4=m
CONFIG_NF_NAT_IPV4=m
CONFIG_NFT_CHAIN_NAT_IPV4=m
CONFIG_NF_NAT_MASQUERADE_IPV4=m
CONFIG_NF_NAT_SNMP_BASIC=m
CONFIG_NF_NAT_PROTO_GRE=m
CONFIG_NF_NAT_PPTP=m
CONFIG_NF_NAT_H323=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_AH=m
CONFIG_IP_NF_MATCH_ECN=m
CONFIG_IP_NF_MATCH_RPFILTER=m
CONFIG_IP_NF_MATCH_TTL=m
CONFIG_IP_NF_FILTER=m
CONFIG_IP_NF_TARGET_REJECT=m
CONFIG_IP_NF_TARGET_SYNPROXY=m
CONFIG_IP_NF_NAT=m
CONFIG_IP_NF_TARGET_MASQUERADE=m
CONFIG_IP_NF_TARGET_NETMAP=m
CONFIG_IP_NF_TARGET_REDIRECT=m
CONFIG_IP_NF_MANGLE=m
CONFIG_IP_NF_TARGET_CLUSTERIP=m
CONFIG_IP_NF_TARGET_ECN=m
CONFIG_IP_NF_TARGET_TTL=m
CONFIG_IP_NF_RAW=m
CONFIG_IP_NF_SECURITY=m
CONFIG_IP_NF_ARPTABLES=m
CONFIG_IP_NF_ARPFILTER=m
CONFIG_IP_NF_ARP_MANGLE=m

#
# IPv6: Netfilter Configuration
#
CONFIG_NF_DEFRAG_IPV6=m
CONFIG_NF_CONNTRACK_IPV6=m
# CONFIG_NF_SOCKET_IPV6 is not set
CONFIG_NF_TABLES_IPV6=m
CONFIG_NFT_CHAIN_ROUTE_IPV6=m
# CONFIG_NFT_REJECT_IPV6 is not set
# CONFIG_NFT_DUP_IPV6 is not set
# CONFIG_NFT_FIB_IPV6 is not set
CONFIG_NF_DUP_IPV6=m
CONFIG_NF_REJECT_IPV6=m
CONFIG_NF_LOG_IPV6=m
CONFIG_NF_NAT_IPV6=m
CONFIG_NFT_CHAIN_NAT_IPV6=m
# CONFIG_NF_NAT_MASQUERADE_IPV6 is not set
CONFIG_IP6_NF_IPTABLES=m
CONFIG_IP6_NF_MATCH_AH=m
CONFIG_IP6_NF_MATCH_EUI64=m
CONFIG_IP6_NF_MATCH_FRAG=m
CONFIG_IP6_NF_MATCH_OPTS=m
CONFIG_IP6_NF_MATCH_HL=m
CONFIG_IP6_NF_MATCH_IPV6HEADER=m
CONFIG_IP6_NF_MATCH_MH=m
CONFIG_IP6_NF_MATCH_RPFILTER=m
CONFIG_IP6_NF_MATCH_RT=m
CONFIG_IP6_NF_TARGET_HL=m
CONFIG_IP6_NF_FILTER=m
CONFIG_IP6_NF_TARGET_REJECT=m
CONFIG_IP6_NF_TARGET_SYNPROXY=m
CONFIG_IP6_NF_MANGLE=m
CONFIG_IP6_NF_RAW=m
CONFIG_IP6_NF_SECURITY=m
# CONFIG_IP6_NF_NAT is not set
CONFIG_NF_TABLES_BRIDGE=m
# CONFIG_NFT_BRIDGE_META is not set
# CONFIG_NF_LOG_BRIDGE is not set
CONFIG_BRIDGE_NF_EBTABLES=m
CONFIG_BRIDGE_EBT_BROUTE=m
CONFIG_BRIDGE_EBT_T_FILTER=m
CONFIG_BRIDGE_EBT_T_NAT=m
CONFIG_BRIDGE_EBT_802_3=m
CONFIG_BRIDGE_EBT_AMONG=m
CONFIG_BRIDGE_EBT_ARP=m
CONFIG_BRIDGE_EBT_IP=m
CONFIG_BRIDGE_EBT_IP6=m
CONFIG_BRIDGE_EBT_LIMIT=m
CONFIG_BRIDGE_EBT_MARK=m
CONFIG_BRIDGE_EBT_PKTTYPE=m
CONFIG_BRIDGE_EBT_STP=m
CONFIG_BRIDGE_EBT_VLAN=m
CONFIG_BRIDGE_EBT_ARPREPLY=m
CONFIG_BRIDGE_EBT_DNAT=m
CONFIG_BRIDGE_EBT_MARK_T=m
CONFIG_BRIDGE_EBT_REDIRECT=m
CONFIG_BRIDGE_EBT_SNAT=m
CONFIG_BRIDGE_EBT_LOG=m
CONFIG_BRIDGE_EBT_NFLOG=m
CONFIG_IP_DCCP=m
CONFIG_INET_DCCP_DIAG=m

#
# DCCP CCIDs Configuration
#
# CONFIG_IP_DCCP_CCID2_DEBUG is not set
CONFIG_IP_DCCP_CCID3=y
# CONFIG_IP_DCCP_CCID3_DEBUG is not set
CONFIG_IP_DCCP_TFRC_LIB=y

#
# DCCP Kernel Hacking
#
# CONFIG_IP_DCCP_DEBUG is not set
# CONFIG_NET_DCCPPROBE is not set
CONFIG_IP_SCTP=m
CONFIG_NET_SCTPPROBE=m
# CONFIG_SCTP_DBG_OBJCNT is not set
# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_MD5 is not set
CONFIG_SCTP_DEFAULT_COOKIE_HMAC_SHA1=y
# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_NONE is not set
CONFIG_SCTP_COOKIE_HMAC_MD5=y
CONFIG_SCTP_COOKIE_HMAC_SHA1=y
CONFIG_INET_SCTP_DIAG=m
# CONFIG_RDS is not set
CONFIG_TIPC=m
CONFIG_TIPC_MEDIA_UDP=y
CONFIG_ATM=m
CONFIG_ATM_CLIP=m
# CONFIG_ATM_CLIP_NO_ICMP is not set
CONFIG_ATM_LANE=m
# CONFIG_ATM_MPOA is not set
CONFIG_ATM_BR2684=m
# CONFIG_ATM_BR2684_IPFILTER is not set
CONFIG_L2TP=m
CONFIG_L2TP_DEBUGFS=m
CONFIG_L2TP_V3=y
CONFIG_L2TP_IP=m
CONFIG_L2TP_ETH=m
CONFIG_STP=m
CONFIG_GARP=m
CONFIG_MRP=m
CONFIG_BRIDGE=m
CONFIG_BRIDGE_IGMP_SNOOPING=y
CONFIG_BRIDGE_VLAN_FILTERING=y
CONFIG_HAVE_NET_DSA=y
# CONFIG_NET_DSA is not set
CONFIG_VLAN_8021Q=m
CONFIG_VLAN_8021Q_GVRP=y
CONFIG_VLAN_8021Q_MVRP=y
# CONFIG_DECNET is not set
CONFIG_LLC=m
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_6LOWPAN is not set
CONFIG_IEEE802154=m
# CONFIG_IEEE802154_NL802154_EXPERIMENTAL is not set
CONFIG_IEEE802154_SOCKET=m
CONFIG_MAC802154=m
CONFIG_NET_SCHED=y

#
# Queueing/Scheduling
#
CONFIG_NET_SCH_CBQ=m
CONFIG_NET_SCH_HTB=m
CONFIG_NET_SCH_HFSC=m
CONFIG_NET_SCH_ATM=m
CONFIG_NET_SCH_PRIO=m
CONFIG_NET_SCH_MULTIQ=m
CONFIG_NET_SCH_RED=m
CONFIG_NET_SCH_SFB=m
CONFIG_NET_SCH_SFQ=m
CONFIG_NET_SCH_TEQL=m
CONFIG_NET_SCH_TBF=m
CONFIG_NET_SCH_GRED=m
CONFIG_NET_SCH_DSMARK=m
CONFIG_NET_SCH_NETEM=m
CONFIG_NET_SCH_DRR=m
CONFIG_NET_SCH_MQPRIO=m
CONFIG_NET_SCH_CHOKE=m
CONFIG_NET_SCH_QFQ=m
CONFIG_NET_SCH_CODEL=m
CONFIG_NET_SCH_FQ_CODEL=m
# CONFIG_NET_SCH_FQ is not set
# CONFIG_NET_SCH_HHF is not set
# CONFIG_NET_SCH_PIE is not set
CONFIG_NET_SCH_INGRESS=m
CONFIG_NET_SCH_PLUG=m
# CONFIG_NET_SCH_DEFAULT is not set

#
# Classification
#
CONFIG_NET_CLS=y
CONFIG_NET_CLS_BASIC=m
CONFIG_NET_CLS_TCINDEX=m
CONFIG_NET_CLS_ROUTE4=m
CONFIG_NET_CLS_FW=m
CONFIG_NET_CLS_U32=m
CONFIG_CLS_U32_PERF=y
CONFIG_CLS_U32_MARK=y
CONFIG_NET_CLS_RSVP=m
CONFIG_NET_CLS_RSVP6=m
CONFIG_NET_CLS_FLOW=m
CONFIG_NET_CLS_CGROUP=y
CONFIG_NET_CLS_BPF=m
# CONFIG_NET_CLS_FLOWER is not set
# CONFIG_NET_CLS_MATCHALL is not set
CONFIG_NET_EMATCH=y
CONFIG_NET_EMATCH_STACK=32
CONFIG_NET_EMATCH_CMP=m
CONFIG_NET_EMATCH_NBYTE=m
CONFIG_NET_EMATCH_U32=m
CONFIG_NET_EMATCH_META=m
CONFIG_NET_EMATCH_TEXT=m
CONFIG_NET_EMATCH_IPSET=m
CONFIG_NET_CLS_ACT=y
CONFIG_NET_ACT_POLICE=m
CONFIG_NET_ACT_GACT=m
CONFIG_GACT_PROB=y
CONFIG_NET_ACT_MIRRED=m
# CONFIG_NET_ACT_SAMPLE is not set
CONFIG_NET_ACT_IPT=m
CONFIG_NET_ACT_NAT=m
CONFIG_NET_ACT_PEDIT=m
CONFIG_NET_ACT_SIMP=m
CONFIG_NET_ACT_SKBEDIT=m
CONFIG_NET_ACT_CSUM=m
# CONFIG_NET_ACT_VLAN is not set
# CONFIG_NET_ACT_BPF is not set
# CONFIG_NET_ACT_CONNMARK is not set
# CONFIG_NET_ACT_SKBMOD is not set
# CONFIG_NET_ACT_IFE is not set
# CONFIG_NET_ACT_TUNNEL_KEY is not set
CONFIG_NET_CLS_IND=y
CONFIG_NET_SCH_FIFO=y
CONFIG_DCB=y
CONFIG_DNS_RESOLVER=m
# CONFIG_BATMAN_ADV is not set
CONFIG_OPENVSWITCH=m
CONFIG_OPENVSWITCH_GRE=m
CONFIG_OPENVSWITCH_VXLAN=m
CONFIG_VSOCKETS=m
CONFIG_VMWARE_VMCI_VSOCKETS=m
# CONFIG_VIRTIO_VSOCKETS is not set
CONFIG_NETLINK_DIAG=m
CONFIG_MPLS=y
CONFIG_NET_MPLS_GSO=m
# CONFIG_MPLS_ROUTING is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_NET_NCSI is not set
CONFIG_RPS=y
CONFIG_RFS_ACCEL=y
CONFIG_XPS=y
# CONFIG_CGROUP_NET_PRIO is not set
CONFIG_CGROUP_NET_CLASSID=y
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
CONFIG_BPF_JIT=y
CONFIG_NET_FLOW_LIMIT=y

#
# Network testing
#
CONFIG_NET_PKTGEN=m
# CONFIG_NET_TCPPROBE is not set
CONFIG_NET_DROP_MONITOR=y
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_STREAM_PARSER is not set
CONFIG_FIB_RULES=y
CONFIG_WIRELESS=y
CONFIG_WIRELESS_EXT=y
CONFIG_WEXT_CORE=y
CONFIG_WEXT_PROC=y
CONFIG_WEXT_PRIV=y
CONFIG_CFG80211=m
# CONFIG_NL80211_TESTMODE is not set
# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
# CONFIG_CFG80211_CERTIFICATION_ONUS is not set
CONFIG_CFG80211_DEFAULT_PS=y
# CONFIG_CFG80211_DEBUGFS is not set
# CONFIG_CFG80211_INTERNAL_REGDB is not set
CONFIG_CFG80211_CRDA_SUPPORT=y
CONFIG_CFG80211_WEXT=y
CONFIG_LIB80211=m
# CONFIG_LIB80211_DEBUG is not set
CONFIG_MAC80211=m
CONFIG_MAC80211_HAS_RC=y
CONFIG_MAC80211_RC_MINSTREL=y
CONFIG_MAC80211_RC_MINSTREL_HT=y
# CONFIG_MAC80211_RC_MINSTREL_VHT is not set
CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
CONFIG_MAC80211_MESH=y
CONFIG_MAC80211_LEDS=y
# CONFIG_MAC80211_DEBUGFS is not set
# CONFIG_MAC80211_MESSAGE_TRACING is not set
# CONFIG_MAC80211_DEBUG_MENU is not set
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
# CONFIG_WIMAX is not set
CONFIG_RFKILL=m
CONFIG_RFKILL_LEDS=y
CONFIG_RFKILL_INPUT=y
# CONFIG_RFKILL_GPIO is not set
CONFIG_NET_9P=y
CONFIG_NET_9P_VIRTIO=y
# CONFIG_NET_9P_DEBUG is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not set
CONFIG_DST_CACHE=y
CONFIG_GRO_CELLS=y
# CONFIG_NET_DEVLINK is not set
CONFIG_MAY_USE_DEVLINK=y
CONFIG_HAVE_EBPF_JIT=y

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER=y
CONFIG_UEVENT_HELPER_PATH=""
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
# CONFIG_FIRMWARE_IN_KERNEL is not set
CONFIG_EXTRA_FIRMWARE=""
CONFIG_FW_LOADER_USER_HELPER=y
CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
CONFIG_SYS_HYPERVISOR=y
# CONFIG_GENERIC_CPU_DEVICES is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_SPI=y
CONFIG_DMA_SHARED_BUFFER=y
# CONFIG_DMA_FENCE_TRACE is not set
CONFIG_DMA_CMA=y

#
# Default contiguous memory area size:
#
CONFIG_CMA_SIZE_MBYTES=200
CONFIG_CMA_SIZE_SEL_MBYTES=y
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
# CONFIG_CMA_SIZE_SEL_MIN is not set
# CONFIG_CMA_SIZE_SEL_MAX is not set
CONFIG_CMA_ALIGNMENT=8

#
# Bus devices
#
CONFIG_CONNECTOR=y
CONFIG_PROC_EVENTS=y
CONFIG_MTD=m
# CONFIG_MTD_TESTS is not set
# CONFIG_MTD_REDBOOT_PARTS is not set
# CONFIG_MTD_CMDLINE_PARTS is not set
# CONFIG_MTD_AR7_PARTS is not set

#
# User Modules And Translation Layers
#
CONFIG_MTD_BLKDEVS=m
CONFIG_MTD_BLOCK=m
# CONFIG_MTD_BLOCK_RO is not set
# CONFIG_FTL is not set
# CONFIG_NFTL is not set
# CONFIG_INFTL is not set
# CONFIG_RFD_FTL is not set
# CONFIG_SSFDC is not set
# CONFIG_SM_FTL is not set
# CONFIG_MTD_OOPS is not set
# CONFIG_MTD_SWAP is not set
# CONFIG_MTD_PARTITIONED_MASTER is not set

#
# RAM/ROM/Flash chip drivers
#
# CONFIG_MTD_CFI is not set
# CONFIG_MTD_JEDECPROBE is not set
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
# CONFIG_MTD_CFI_I4 is not set
# CONFIG_MTD_CFI_I8 is not set
# CONFIG_MTD_RAM is not set
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_ABSENT is not set

#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
# CONFIG_MTD_INTEL_VR_NOR is not set
# CONFIG_MTD_PLATRAM is not set

#
# Self-contained MTD device drivers
#
# CONFIG_MTD_PMC551 is not set
# CONFIG_MTD_DATAFLASH is not set
# CONFIG_MTD_SST25L is not set
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_PHRAM is not set
# CONFIG_MTD_MTDRAM is not set
# CONFIG_MTD_BLOCK2MTD is not set

#
# Disk-On-Chip Device Drivers
#
# CONFIG_MTD_DOCG3 is not set
# CONFIG_MTD_NAND is not set
# CONFIG_MTD_ONENAND is not set

#
# LPDDR & LPDDR2 PCM memory drivers
#
# CONFIG_MTD_LPDDR is not set
# CONFIG_MTD_SPI_NOR is not set
CONFIG_MTD_UBI=m
CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_MTD_UBI_BEB_LIMIT=20
# CONFIG_MTD_UBI_FASTMAP is not set
# CONFIG_MTD_UBI_GLUEBI is not set
# CONFIG_MTD_UBI_BLOCK is not set
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
CONFIG_PARPORT_SERIAL=m
# CONFIG_PARPORT_PC_FIFO is not set
# CONFIG_PARPORT_PC_SUPERIO is not set
# CONFIG_PARPORT_GSC is not set
# CONFIG_PARPORT_AX88796 is not set
CONFIG_PARPORT_1284=y
CONFIG_PARPORT_NOT_PC=y
CONFIG_PNP=y
# CONFIG_PNP_DEBUG_MESSAGES is not set

#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
CONFIG_BLK_DEV_NULL_BLK=m
CONFIG_BLK_DEV_FD=m
# CONFIG_PARIDE is not set
CONFIG_BLK_DEV_PCIESSD_MTIP32XX=m
# CONFIG_ZRAM is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_LOOP_MIN_COUNT=0
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SKD is not set
CONFIG_BLK_DEV_OSD=m
CONFIG_BLK_DEV_SX8=m
CONFIG_BLK_DEV_RAM=m
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=16384
# CONFIG_BLK_DEV_RAM_DAX is not set
CONFIG_CDROM_PKTCDVD=m
CONFIG_CDROM_PKTCDVD_BUFFERS=8
# CONFIG_CDROM_PKTCDVD_WCACHE is not set
CONFIG_ATA_OVER_ETH=m
CONFIG_XEN_BLKDEV_FRONTEND=m
# CONFIG_XEN_BLKDEV_BACKEND is not set
CONFIG_VIRTIO_BLK=y
# CONFIG_VIRTIO_BLK_SCSI is not set
# CONFIG_BLK_DEV_HD is not set
# CONFIG_BLK_DEV_RBD is not set
CONFIG_BLK_DEV_RSXX=m
CONFIG_NVME_CORE=m
CONFIG_BLK_DEV_NVME=m
# CONFIG_BLK_DEV_NVME_SCSI is not set
# CONFIG_NVME_FC is not set
# CONFIG_NVME_TARGET is not set

#
# Misc devices
#
CONFIG_SENSORS_LIS3LV02D=m
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_IBM_ASM is not set
# CONFIG_PHANTOM is not set
CONFIG_SGI_IOC4=m
CONFIG_TIFM_CORE=m
CONFIG_TIFM_7XX1=m
# CONFIG_ICS932S401 is not set
CONFIG_ENCLOSURE_SERVICES=m
CONFIG_SGI_XP=m
CONFIG_HP_ILO=m
CONFIG_SGI_GRU=m
# CONFIG_SGI_GRU_DEBUG is not set
CONFIG_APDS9802ALS=m
CONFIG_ISL29003=m
CONFIG_ISL29020=m
CONFIG_SENSORS_TSL2550=m
CONFIG_SENSORS_BH1770=m
CONFIG_SENSORS_APDS990X=m
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_TI_DAC7512 is not set
CONFIG_VMWARE_BALLOON=m
# CONFIG_USB_SWITCH_FSA9480 is not set
# CONFIG_LATTICE_ECP3_CONFIG is not set
# CONFIG_SRAM is not set
# CONFIG_PANEL is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
CONFIG_EEPROM_AT24=m
# CONFIG_EEPROM_AT25 is not set
CONFIG_EEPROM_LEGACY=m
CONFIG_EEPROM_MAX6875=m
CONFIG_EEPROM_93CX6=m
# CONFIG_EEPROM_93XX46 is not set
# CONFIG_EEPROM_IDT_89HPESX is not set
CONFIG_CB710_CORE=m
# CONFIG_CB710_DEBUG is not set
CONFIG_CB710_DEBUG_ASSUMPTIONS=y

#
# Texas Instruments shared transport line discipline
#
# CONFIG_TI_ST is not set
CONFIG_SENSORS_LIS3_I2C=m

#
# Altera FPGA firmware download module
#
CONFIG_ALTERA_STAPL=m
CONFIG_INTEL_MEI=y
CONFIG_INTEL_MEI_ME=y
# CONFIG_INTEL_MEI_TXE is not set
CONFIG_VMWARE_VMCI=m

#
# Intel MIC Bus Driver
#
# CONFIG_INTEL_MIC_BUS is not set

#
# SCIF Bus Driver
#
# CONFIG_SCIF_BUS is not set

#
# VOP Bus Driver
#
# CONFIG_VOP_BUS is not set

#
# Intel MIC Host Driver
#

#
# Intel MIC Card Driver
#

#
# SCIF Driver
#

#
# Intel MIC Coprocessor State Management (COSM) Drivers
#

#
# VOP Driver
#
# CONFIG_GENWQE is not set
# CONFIG_ECHO is not set
# CONFIG_CXL_BASE is not set
# CONFIG_CXL_AFU_DRIVER_OPS is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
CONFIG_SCSI_NETLINK=y
# CONFIG_SCSI_MQ_DEFAULT is not set
CONFIG_SCSI_PROC_FS=y

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=m
CONFIG_CHR_DEV_ST=m
CONFIG_CHR_DEV_OSST=m
CONFIG_BLK_DEV_SR=m
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_CHR_DEV_SG=m
CONFIG_CHR_DEV_SCH=m
CONFIG_SCSI_ENCLOSURE=m
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_SCAN_ASYNC=y

#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=m
CONFIG_SCSI_FC_ATTRS=m
CONFIG_SCSI_ISCSI_ATTRS=m
CONFIG_SCSI_SAS_ATTRS=m
CONFIG_SCSI_SAS_LIBSAS=m
CONFIG_SCSI_SAS_ATA=y
CONFIG_SCSI_SAS_HOST_SMP=y
CONFIG_SCSI_SRP_ATTRS=m
CONFIG_SCSI_LOWLEVEL=y
CONFIG_ISCSI_TCP=m
CONFIG_ISCSI_BOOT_SYSFS=m
CONFIG_SCSI_CXGB3_ISCSI=m
CONFIG_SCSI_CXGB4_ISCSI=m
CONFIG_SCSI_BNX2_ISCSI=m
CONFIG_SCSI_BNX2X_FCOE=m
CONFIG_BE2ISCSI=m
# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
CONFIG_SCSI_HPSA=m
CONFIG_SCSI_3W_9XXX=m
CONFIG_SCSI_3W_SAS=m
# CONFIG_SCSI_ACARD is not set
CONFIG_SCSI_AACRAID=m
# CONFIG_SCSI_AIC7XXX is not set
CONFIG_SCSI_AIC79XX=m
CONFIG_AIC79XX_CMDS_PER_DEVICE=4
CONFIG_AIC79XX_RESET_DELAY_MS=15000
# CONFIG_AIC79XX_DEBUG_ENABLE is not set
CONFIG_AIC79XX_DEBUG_MASK=0
# CONFIG_AIC79XX_REG_PRETTY_PRINT is not set
# CONFIG_SCSI_AIC94XX is not set
CONFIG_SCSI_MVSAS=m
# CONFIG_SCSI_MVSAS_DEBUG is not set
CONFIG_SCSI_MVSAS_TASKLET=y
CONFIG_SCSI_MVUMI=m
# CONFIG_SCSI_DPT_I2O is not set
# CONFIG_SCSI_ADVANSYS is not set
CONFIG_SCSI_ARCMSR=m
# CONFIG_SCSI_ESAS2R is not set
# CONFIG_MEGARAID_NEWGEN is not set
# CONFIG_MEGARAID_LEGACY is not set
CONFIG_MEGARAID_SAS=m
CONFIG_SCSI_MPT3SAS=m
CONFIG_SCSI_MPT2SAS_MAX_SGE=128
CONFIG_SCSI_MPT3SAS_MAX_SGE=128
CONFIG_SCSI_MPT2SAS=m
# CONFIG_SCSI_SMARTPQI is not set
CONFIG_SCSI_UFSHCD=m
CONFIG_SCSI_UFSHCD_PCI=m
# CONFIG_SCSI_UFS_DWC_TC_PCI is not set
# CONFIG_SCSI_UFSHCD_PLATFORM is not set
CONFIG_SCSI_HPTIOP=m
# CONFIG_SCSI_BUSLOGIC is not set
CONFIG_VMWARE_PVSCSI=m
# CONFIG_XEN_SCSI_FRONTEND is not set
CONFIG_HYPERV_STORAGE=m
CONFIG_LIBFC=m
CONFIG_LIBFCOE=m
CONFIG_FCOE=m
CONFIG_FCOE_FNIC=m
# CONFIG_SCSI_SNIC is not set
# CONFIG_SCSI_DMX3191D is not set
# CONFIG_SCSI_EATA is not set
# CONFIG_SCSI_FUTURE_DOMAIN is not set
# CONFIG_SCSI_GDTH is not set
CONFIG_SCSI_ISCI=m
# CONFIG_SCSI_IPS is not set
CONFIG_SCSI_INITIO=m
# CONFIG_SCSI_INIA100 is not set
# CONFIG_SCSI_PPA is not set
# CONFIG_SCSI_IMM is not set
CONFIG_SCSI_STEX=m
# CONFIG_SCSI_SYM53C8XX_2 is not set
CONFIG_SCSI_IPR=m
CONFIG_SCSI_IPR_TRACE=y
CONFIG_SCSI_IPR_DUMP=y
# CONFIG_SCSI_QLOGIC_1280 is not set
CONFIG_SCSI_QLA_FC=m
# CONFIG_TCM_QLA2XXX is not set
CONFIG_SCSI_QLA_ISCSI=m
# CONFIG_SCSI_LPFC is not set
# CONFIG_SCSI_DC395x is not set
# CONFIG_SCSI_AM53C974 is not set
# CONFIG_SCSI_WD719X is not set
CONFIG_SCSI_DEBUG=m
CONFIG_SCSI_PMCRAID=m
CONFIG_SCSI_PM8001=m
# CONFIG_SCSI_BFA_FC is not set
CONFIG_SCSI_VIRTIO=m
CONFIG_SCSI_CHELSIO_FCOE=m
CONFIG_SCSI_DH=y
CONFIG_SCSI_DH_RDAC=y
CONFIG_SCSI_DH_HP_SW=y
CONFIG_SCSI_DH_EMC=y
CONFIG_SCSI_DH_ALUA=y
CONFIG_SCSI_OSD_INITIATOR=m
CONFIG_SCSI_OSD_ULD=m
CONFIG_SCSI_OSD_DPRINT_SENSE=1
# CONFIG_SCSI_OSD_DEBUG is not set
CONFIG_ATA=m
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_VERBOSE_ERROR=y
CONFIG_ATA_ACPI=y
# CONFIG_SATA_ZPODD is not set
CONFIG_SATA_PMP=y

#
# Controllers with non-SFF native interface
#
CONFIG_SATA_AHCI=m
CONFIG_SATA_AHCI_PLATFORM=m
# CONFIG_SATA_INIC162X is not set
CONFIG_SATA_ACARD_AHCI=m
CONFIG_SATA_SIL24=m
CONFIG_ATA_SFF=y

#
# SFF controllers with custom DMA interface
#
CONFIG_PDC_ADMA=m
CONFIG_SATA_QSTOR=m
CONFIG_SATA_SX4=m
CONFIG_ATA_BMDMA=y

#
# SATA SFF controllers with BMDMA
#
CONFIG_ATA_PIIX=m
# CONFIG_SATA_DWC is not set
CONFIG_SATA_MV=m
CONFIG_SATA_NV=m
CONFIG_SATA_PROMISE=m
CONFIG_SATA_SIL=m
CONFIG_SATA_SIS=m
CONFIG_SATA_SVW=m
CONFIG_SATA_ULI=m
CONFIG_SATA_VIA=m
CONFIG_SATA_VITESSE=m

#
# PATA SFF controllers with BMDMA
#
CONFIG_PATA_ALI=m
CONFIG_PATA_AMD=m
CONFIG_PATA_ARTOP=m
CONFIG_PATA_ATIIXP=m
CONFIG_PATA_ATP867X=m
CONFIG_PATA_CMD64X=m
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
CONFIG_PATA_HPT366=m
CONFIG_PATA_HPT37X=m
CONFIG_PATA_HPT3X2N=m
CONFIG_PATA_HPT3X3=m
# CONFIG_PATA_HPT3X3_DMA is not set
CONFIG_PATA_IT8213=m
CONFIG_PATA_IT821X=m
CONFIG_PATA_JMICRON=m
CONFIG_PATA_MARVELL=m
CONFIG_PATA_NETCELL=m
CONFIG_PATA_NINJA32=m
# CONFIG_PATA_NS87415 is not set
CONFIG_PATA_OLDPIIX=m
# CONFIG_PATA_OPTIDMA is not set
CONFIG_PATA_PDC2027X=m
CONFIG_PATA_PDC_OLD=m
# CONFIG_PATA_RADISYS is not set
CONFIG_PATA_RDC=m
CONFIG_PATA_SCH=m
CONFIG_PATA_SERVERWORKS=m
CONFIG_PATA_SIL680=m
CONFIG_PATA_SIS=m
CONFIG_PATA_TOSHIBA=m
# CONFIG_PATA_TRIFLEX is not set
CONFIG_PATA_VIA=m
# CONFIG_PATA_WINBOND is not set

#
# PIO-only SFF controllers
#
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_PLATFORM is not set
# CONFIG_PATA_RZ1000 is not set

#
# Generic fallback / legacy drivers
#
CONFIG_PATA_ACPI=m
CONFIG_ATA_GENERIC=m
# CONFIG_PATA_LEGACY is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
CONFIG_MD_AUTODETECT=y
CONFIG_MD_LINEAR=m
CONFIG_MD_RAID0=m
CONFIG_MD_RAID1=m
CONFIG_MD_RAID10=m
CONFIG_MD_RAID456=m
CONFIG_MD_MULTIPATH=m
CONFIG_MD_FAULTY=m
# CONFIG_MD_CLUSTER is not set
# CONFIG_BCACHE is not set
CONFIG_BLK_DEV_DM_BUILTIN=y
CONFIG_BLK_DEV_DM=m
# CONFIG_DM_MQ_DEFAULT is not set
CONFIG_DM_DEBUG=y
CONFIG_DM_BUFIO=m
# CONFIG_DM_DEBUG_BLOCK_MANAGER_LOCKING is not set
CONFIG_DM_BIO_PRISON=m
CONFIG_DM_PERSISTENT_DATA=m
CONFIG_DM_CRYPT=m
CONFIG_DM_SNAPSHOT=m
CONFIG_DM_THIN_PROVISIONING=m
CONFIG_DM_CACHE=m
CONFIG_DM_CACHE_SMQ=m
CONFIG_DM_CACHE_CLEANER=m
# CONFIG_DM_ERA is not set
CONFIG_DM_MIRROR=m
CONFIG_DM_LOG_USERSPACE=m
CONFIG_DM_RAID=m
CONFIG_DM_ZERO=m
CONFIG_DM_MULTIPATH=m
CONFIG_DM_MULTIPATH_QL=m
CONFIG_DM_MULTIPATH_ST=m
CONFIG_DM_DELAY=m
CONFIG_DM_UEVENT=y
CONFIG_DM_FLAKEY=m
CONFIG_DM_VERITY=m
# CONFIG_DM_VERITY_FEC is not set
CONFIG_DM_SWITCH=m
# CONFIG_DM_LOG_WRITES is not set
CONFIG_TARGET_CORE=m
CONFIG_TCM_IBLOCK=m
CONFIG_TCM_FILEIO=m
CONFIG_TCM_PSCSI=m
# CONFIG_TCM_USER2 is not set
CONFIG_LOOPBACK_TARGET=m
CONFIG_TCM_FC=m
CONFIG_ISCSI_TARGET=m
# CONFIG_ISCSI_TARGET_CXGB4 is not set
# CONFIG_SBP_TARGET is not set
CONFIG_FUSION=y
CONFIG_FUSION_SPI=m
# CONFIG_FUSION_FC is not set
CONFIG_FUSION_SAS=m
CONFIG_FUSION_MAX_SGE=128
CONFIG_FUSION_CTL=m
CONFIG_FUSION_LOGGING=y

#
# IEEE 1394 (FireWire) support
#
CONFIG_FIREWIRE=m
CONFIG_FIREWIRE_OHCI=m
CONFIG_FIREWIRE_SBP2=m
CONFIG_FIREWIRE_NET=m
# CONFIG_FIREWIRE_NOSY is not set
CONFIG_MACINTOSH_DRIVERS=y
CONFIG_MAC_EMUMOUSEBTN=y
CONFIG_NETDEVICES=y
CONFIG_MII=y
CONFIG_NET_CORE=y
CONFIG_BONDING=m
CONFIG_DUMMY=m
# CONFIG_EQUALIZER is not set
CONFIG_NET_FC=y
CONFIG_IFB=m
CONFIG_NET_TEAM=m
CONFIG_NET_TEAM_MODE_BROADCAST=m
CONFIG_NET_TEAM_MODE_ROUNDROBIN=m
CONFIG_NET_TEAM_MODE_RANDOM=m
CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=m
CONFIG_NET_TEAM_MODE_LOADBALANCE=m
CONFIG_MACVLAN=m
CONFIG_MACVTAP=m
CONFIG_VXLAN=m
# CONFIG_GENEVE is not set
# CONFIG_GTP is not set
# CONFIG_MACSEC is not set
CONFIG_NETCONSOLE=m
CONFIG_NETCONSOLE_DYNAMIC=y
CONFIG_NETPOLL=y
CONFIG_NET_POLL_CONTROLLER=y
CONFIG_TUN=m
CONFIG_TAP=m
# CONFIG_TUN_VNET_CROSS_LE is not set
CONFIG_VETH=m
CONFIG_VIRTIO_NET=y
CONFIG_NLMON=m
# CONFIG_ARCNET is not set
# CONFIG_ATM_DRIVERS is not set

#
# CAIF transport drivers
#

#
# Distributed Switch Architecture drivers
#
CONFIG_ETHERNET=y
CONFIG_MDIO=y
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_NET_VENDOR_ADAPTEC is not set
CONFIG_NET_VENDOR_AGERE=y
# CONFIG_ET131X is not set
CONFIG_NET_VENDOR_ALACRITECH=y
# CONFIG_SLICOSS is not set
# CONFIG_NET_VENDOR_ALTEON is not set
# CONFIG_ALTERA_TSE is not set
CONFIG_NET_VENDOR_AMAZON=y
# CONFIG_ENA_ETHERNET is not set
# CONFIG_NET_VENDOR_AMD is not set
CONFIG_NET_VENDOR_AQUANTIA=y
# CONFIG_AQTION is not set
CONFIG_NET_VENDOR_ARC=y
CONFIG_NET_VENDOR_ATHEROS=y
CONFIG_ATL2=m
CONFIG_ATL1=m
CONFIG_ATL1E=m
CONFIG_ATL1C=m
CONFIG_ALX=m
# CONFIG_NET_VENDOR_AURORA is not set
CONFIG_NET_CADENCE=y
# CONFIG_MACB is not set
CONFIG_NET_VENDOR_BROADCOM=y
CONFIG_B44=m
CONFIG_B44_PCI_AUTOSELECT=y
CONFIG_B44_PCICORE_AUTOSELECT=y
CONFIG_B44_PCI=y
# CONFIG_BCMGENET is not set
CONFIG_BNX2=m
CONFIG_CNIC=m
CONFIG_TIGON3=y
CONFIG_TIGON3_HWMON=y
# CONFIG_BNX2X is not set
# CONFIG_BNXT is not set
CONFIG_NET_VENDOR_BROCADE=y
CONFIG_BNA=m
CONFIG_NET_VENDOR_CAVIUM=y
# CONFIG_THUNDER_NIC_PF is not set
# CONFIG_THUNDER_NIC_VF is not set
# CONFIG_THUNDER_NIC_BGX is not set
# CONFIG_THUNDER_NIC_RGX is not set
# CONFIG_LIQUIDIO is not set
# CONFIG_LIQUIDIO_VF is not set
CONFIG_NET_VENDOR_CHELSIO=y
# CONFIG_CHELSIO_T1 is not set
CONFIG_CHELSIO_T3=m
CONFIG_CHELSIO_T4=m
# CONFIG_CHELSIO_T4_DCB is not set
CONFIG_CHELSIO_T4VF=m
CONFIG_CHELSIO_LIB=m
CONFIG_NET_VENDOR_CISCO=y
CONFIG_ENIC=m
# CONFIG_CX_ECAT is not set
CONFIG_DNET=m
CONFIG_NET_VENDOR_DEC=y
CONFIG_NET_TULIP=y
CONFIG_DE2104X=m
CONFIG_DE2104X_DSL=0
CONFIG_TULIP=y
# CONFIG_TULIP_MWI is not set
CONFIG_TULIP_MMIO=y
# CONFIG_TULIP_NAPI is not set
CONFIG_DE4X5=m
CONFIG_WINBOND_840=m
CONFIG_DM9102=m
CONFIG_ULI526X=m
CONFIG_PCMCIA_XIRCOM=m
# CONFIG_NET_VENDOR_DLINK is not set
CONFIG_NET_VENDOR_EMULEX=y
CONFIG_BE2NET=m
CONFIG_BE2NET_HWMON=y
CONFIG_NET_VENDOR_EZCHIP=y
# CONFIG_NET_VENDOR_EXAR is not set
# CONFIG_NET_VENDOR_HP is not set
CONFIG_NET_VENDOR_INTEL=y
# CONFIG_E100 is not set
CONFIG_E1000=y
CONFIG_E1000E=y
CONFIG_E1000E_HWTS=y
CONFIG_IGB=y
CONFIG_IGB_HWMON=y
CONFIG_IGBVF=m
CONFIG_IXGB=m
CONFIG_IXGBE=y
CONFIG_IXGBE_HWMON=y
CONFIG_IXGBE_DCB=y
CONFIG_IXGBEVF=m
CONFIG_I40E=m
# CONFIG_I40E_DCB is not set
# CONFIG_I40EVF is not set
# CONFIG_FM10K is not set
# CONFIG_NET_VENDOR_I825XX is not set
CONFIG_JME=m
CONFIG_NET_VENDOR_MARVELL=y
CONFIG_MVMDIO=m
CONFIG_SKGE=m
CONFIG_SKGE_DEBUG=y
CONFIG_SKGE_GENESIS=y
CONFIG_SKY2=m
CONFIG_SKY2_DEBUG=y
CONFIG_NET_VENDOR_MELLANOX=y
CONFIG_MLX4_EN=m
CONFIG_MLX4_EN_DCB=y
CONFIG_MLX4_CORE=m
CONFIG_MLX4_DEBUG=y
# CONFIG_MLX5_CORE is not set
# CONFIG_MLXSW_CORE is not set
# CONFIG_NET_VENDOR_MICREL is not set
CONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_ENC28J60 is not set
# CONFIG_ENCX24J600 is not set
CONFIG_NET_VENDOR_MYRI=y
CONFIG_MYRI10GE=m
# CONFIG_FEALNX is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
CONFIG_NET_VENDOR_NETRONOME=y
# CONFIG_NFP is not set
# CONFIG_NET_VENDOR_NVIDIA is not set
CONFIG_NET_VENDOR_OKI=y
CONFIG_ETHOC=m
CONFIG_NET_PACKET_ENGINE=y
# CONFIG_HAMACHI is not set
CONFIG_YELLOWFIN=m
CONFIG_NET_VENDOR_QLOGIC=y
CONFIG_QLA3XXX=m
CONFIG_QLCNIC=m
CONFIG_QLCNIC_SRIOV=y
CONFIG_QLCNIC_DCB=y
CONFIG_QLCNIC_HWMON=y
CONFIG_QLGE=m
CONFIG_NETXEN_NIC=m
# CONFIG_QED is not set
CONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_QCOM_EMAC is not set
CONFIG_NET_VENDOR_REALTEK=y
# CONFIG_ATP is not set
CONFIG_8139CP=y
CONFIG_8139TOO=y
CONFIG_8139TOO_PIO=y
# CONFIG_8139TOO_TUNE_TWISTER is not set
CONFIG_8139TOO_8129=y
# CONFIG_8139_OLD_RX_RESET is not set
CONFIG_R8169=y
CONFIG_NET_VENDOR_RENESAS=y
# CONFIG_NET_VENDOR_RDC is not set
CONFIG_NET_VENDOR_ROCKER=y
CONFIG_NET_VENDOR_SAMSUNG=y
# CONFIG_SXGBE_ETH is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SILAN is not set
# CONFIG_NET_VENDOR_SIS is not set
CONFIG_NET_VENDOR_SOLARFLARE=y
CONFIG_SFC=m
CONFIG_SFC_MTD=y
CONFIG_SFC_MCDI_MON=y
CONFIG_SFC_SRIOV=y
CONFIG_SFC_MCDI_LOGGING=y
# CONFIG_SFC_FALCON is not set
CONFIG_NET_VENDOR_SMSC=y
CONFIG_EPIC100=m
# CONFIG_SMSC911X is not set
CONFIG_SMSC9420=m
# CONFIG_NET_VENDOR_STMICRO is not set
# CONFIG_NET_VENDOR_SUN is not set
# CONFIG_NET_VENDOR_TEHUTI is not set
# CONFIG_NET_VENDOR_TI is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_NET_VENDOR_SYNOPSYS=y
# CONFIG_DWC_XLGMAC is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_NET_SB1000 is not set
CONFIG_MDIO_DEVICE=y
CONFIG_MDIO_BITBANG=m
# CONFIG_MDIO_GPIO is not set
# CONFIG_MDIO_OCTEON is not set
# CONFIG_MDIO_THUNDER is not set
CONFIG_PHYLIB=y
CONFIG_SWPHY=y
# CONFIG_LED_TRIGGER_PHY is not set

#
# MII PHY device drivers
#
CONFIG_AMD_PHY=m
# CONFIG_AQUANTIA_PHY is not set
CONFIG_AT803X_PHY=m
# CONFIG_BCM7XXX_PHY is not set
CONFIG_BCM87XX_PHY=m
CONFIG_BCM_NET_PHYLIB=m
CONFIG_BROADCOM_PHY=m
CONFIG_CICADA_PHY=m
CONFIG_DAVICOM_PHY=m
# CONFIG_DP83848_PHY is not set
# CONFIG_DP83867_PHY is not set
CONFIG_FIXED_PHY=y
CONFIG_ICPLUS_PHY=m
# CONFIG_INTEL_XWAY_PHY is not set
CONFIG_LSI_ET1011C_PHY=m
CONFIG_LXT_PHY=m
CONFIG_MARVELL_PHY=m
CONFIG_MICREL_PHY=m
# CONFIG_MICROCHIP_PHY is not set
# CONFIG_MICROSEMI_PHY is not set
CONFIG_NATIONAL_PHY=m
CONFIG_QSEMI_PHY=m
CONFIG_REALTEK_PHY=m
CONFIG_SMSC_PHY=m
CONFIG_STE10XP=m
# CONFIG_TERANETICS_PHY is not set
CONFIG_VITESSE_PHY=m
# CONFIG_XILINX_GMII2RGMII is not set
# CONFIG_MICREL_KS8995MA is not set
# CONFIG_PLIP is not set
CONFIG_PPP=m
CONFIG_PPP_BSDCOMP=m
CONFIG_PPP_DEFLATE=m
CONFIG_PPP_FILTER=y
CONFIG_PPP_MPPE=m
CONFIG_PPP_MULTILINK=y
CONFIG_PPPOATM=m
CONFIG_PPPOE=m
CONFIG_PPTP=m
CONFIG_PPPOL2TP=m
CONFIG_PPP_ASYNC=m
CONFIG_PPP_SYNC_TTY=m
CONFIG_SLIP=m
CONFIG_SLHC=m
CONFIG_SLIP_COMPRESSED=y
CONFIG_SLIP_SMART=y
# CONFIG_SLIP_MODE_SLIP6 is not set
CONFIG_USB_NET_DRIVERS=y
CONFIG_USB_CATC=y
CONFIG_USB_KAWETH=y
CONFIG_USB_PEGASUS=y
CONFIG_USB_RTL8150=y
CONFIG_USB_RTL8152=m
# CONFIG_USB_LAN78XX is not set
CONFIG_USB_USBNET=y
CONFIG_USB_NET_AX8817X=y
CONFIG_USB_NET_AX88179_178A=m
CONFIG_USB_NET_CDCETHER=y
CONFIG_USB_NET_CDC_EEM=y
CONFIG_USB_NET_CDC_NCM=m
# CONFIG_USB_NET_HUAWEI_CDC_NCM is not set
CONFIG_USB_NET_CDC_MBIM=m
CONFIG_USB_NET_DM9601=y
# CONFIG_USB_NET_SR9700 is not set
# CONFIG_USB_NET_SR9800 is not set
CONFIG_USB_NET_SMSC75XX=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_USB_NET_GL620A=y
CONFIG_USB_NET_NET1080=y
CONFIG_USB_NET_PLUSB=y
CONFIG_USB_NET_MCS7830=y
CONFIG_USB_NET_RNDIS_HOST=y
CONFIG_USB_NET_CDC_SUBSET_ENABLE=y
CONFIG_USB_NET_CDC_SUBSET=y
CONFIG_USB_ALI_M5632=y
CONFIG_USB_AN2720=y
CONFIG_USB_BELKIN=y
CONFIG_USB_ARMLINUX=y
CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_USB_NET_ZAURUS=y
CONFIG_USB_NET_CX82310_ETH=m
CONFIG_USB_NET_KALMIA=m
CONFIG_USB_NET_QMI_WWAN=m
CONFIG_USB_HSO=m
CONFIG_USB_NET_INT51X1=y
CONFIG_USB_IPHETH=y
CONFIG_USB_SIERRA_NET=y
CONFIG_USB_VL600=m
# CONFIG_USB_NET_CH9200 is not set
CONFIG_WLAN=y
# CONFIG_WIRELESS_WDS is not set
CONFIG_WLAN_VENDOR_ADMTEK=y
# CONFIG_ADM8211 is not set
CONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
# CONFIG_ATH5K is not set
# CONFIG_ATH5K_PCI is not set
# CONFIG_ATH9K is not set
# CONFIG_ATH9K_HTC is not set
# CONFIG_CARL9170 is not set
# CONFIG_ATH6KL is not set
# CONFIG_AR5523 is not set
# CONFIG_WIL6210 is not set
# CONFIG_ATH10K is not set
# CONFIG_WCN36XX is not set
CONFIG_WLAN_VENDOR_ATMEL=y
# CONFIG_ATMEL is not set
# CONFIG_AT76C50X_USB is not set
CONFIG_WLAN_VENDOR_BROADCOM=y
# CONFIG_B43 is not set
# CONFIG_B43LEGACY is not set
# CONFIG_BRCMSMAC is not set
# CONFIG_BRCMFMAC is not set
CONFIG_WLAN_VENDOR_CISCO=y
# CONFIG_AIRO is not set
CONFIG_WLAN_VENDOR_INTEL=y
# CONFIG_IPW2100 is not set
# CONFIG_IPW2200 is not set
# CONFIG_IWL4965 is not set
# CONFIG_IWL3945 is not set
# CONFIG_IWLWIFI is not set
CONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
# CONFIG_HERMES is not set
# CONFIG_P54_COMMON is not set
# CONFIG_PRISM54 is not set
CONFIG_WLAN_VENDOR_MARVELL=y
# CONFIG_LIBERTAS is not set
# CONFIG_LIBERTAS_THINFIRM is not set
# CONFIG_MWIFIEX is not set
# CONFIG_MWL8K is not set
CONFIG_WLAN_VENDOR_MEDIATEK=y
# CONFIG_MT7601U is not set
CONFIG_WLAN_VENDOR_RALINK=y
# CONFIG_RT2X00 is not set
CONFIG_WLAN_VENDOR_REALTEK=y
# CONFIG_RTL8180 is not set
# CONFIG_RTL8187 is not set
CONFIG_RTL_CARDS=m
# CONFIG_RTL8192CE is not set
# CONFIG_RTL8192SE is not set
# CONFIG_RTL8192DE is not set
# CONFIG_RTL8723AE is not set
# CONFIG_RTL8723BE is not set
# CONFIG_RTL8188EE is not set
# CONFIG_RTL8192EE is not set
# CONFIG_RTL8821AE is not set
# CONFIG_RTL8192CU is not set
# CONFIG_RTL8XXXU is not set
CONFIG_WLAN_VENDOR_RSI=y
# CONFIG_RSI_91X is not set
CONFIG_WLAN_VENDOR_ST=y
# CONFIG_CW1200 is not set
CONFIG_WLAN_VENDOR_TI=y
# CONFIG_WL1251 is not set
# CONFIG_WL12XX is not set
# CONFIG_WL18XX is not set
# CONFIG_WLCORE is not set
CONFIG_WLAN_VENDOR_ZYDAS=y
# CONFIG_USB_ZD1201 is not set
# CONFIG_ZD1211RW is not set
CONFIG_MAC80211_HWSIM=m
# CONFIG_USB_NET_RNDIS_WLAN is not set

#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#
CONFIG_WAN=y
# CONFIG_LANMEDIA is not set
CONFIG_HDLC=m
CONFIG_HDLC_RAW=m
# CONFIG_HDLC_RAW_ETH is not set
CONFIG_HDLC_CISCO=m
CONFIG_HDLC_FR=m
CONFIG_HDLC_PPP=m

#
# X.25/LAPB support is disabled
#
# CONFIG_PCI200SYN is not set
# CONFIG_WANXL is not set
# CONFIG_PC300TOO is not set
# CONFIG_FARSYNC is not set
# CONFIG_DSCC4 is not set
CONFIG_DLCI=m
CONFIG_DLCI_MAX=8
# CONFIG_SBNI is not set
CONFIG_IEEE802154_DRIVERS=m
CONFIG_IEEE802154_FAKELB=m
# CONFIG_IEEE802154_AT86RF230 is not set
# CONFIG_IEEE802154_MRF24J40 is not set
# CONFIG_IEEE802154_CC2520 is not set
# CONFIG_IEEE802154_ATUSB is not set
# CONFIG_IEEE802154_ADF7242 is not set
# CONFIG_IEEE802154_CA8210 is not set
CONFIG_XEN_NETDEV_FRONTEND=m
# CONFIG_XEN_NETDEV_BACKEND is not set
CONFIG_VMXNET3=m
# CONFIG_FUJITSU_ES is not set
CONFIG_HYPERV_NET=m
CONFIG_ISDN=y
CONFIG_ISDN_I4L=m
CONFIG_ISDN_PPP=y
CONFIG_ISDN_PPP_VJ=y
CONFIG_ISDN_MPP=y
CONFIG_IPPP_FILTER=y
# CONFIG_ISDN_PPP_BSDCOMP is not set
CONFIG_ISDN_AUDIO=y
CONFIG_ISDN_TTY_FAX=y

#
# ISDN feature submodules
#
CONFIG_ISDN_DIVERSION=m

#
# ISDN4Linux hardware drivers
#

#
# Passive cards
#
# CONFIG_ISDN_DRV_HISAX is not set
CONFIG_ISDN_CAPI=m
# CONFIG_CAPI_TRACE is not set
CONFIG_ISDN_CAPI_CAPI20=m
CONFIG_ISDN_CAPI_MIDDLEWARE=y
CONFIG_ISDN_CAPI_CAPIDRV=m
# CONFIG_ISDN_CAPI_CAPIDRV_VERBOSE is not set

#
# CAPI hardware drivers
#
CONFIG_CAPI_AVM=y
CONFIG_ISDN_DRV_AVMB1_B1PCI=m
CONFIG_ISDN_DRV_AVMB1_B1PCIV4=y
CONFIG_ISDN_DRV_AVMB1_T1PCI=m
CONFIG_ISDN_DRV_AVMB1_C4=m
# CONFIG_CAPI_EICON is not set
CONFIG_ISDN_DRV_GIGASET=m
CONFIG_GIGASET_CAPI=y
# CONFIG_GIGASET_I4L is not set
# CONFIG_GIGASET_DUMMYLL is not set
CONFIG_GIGASET_BASE=m
CONFIG_GIGASET_M105=m
CONFIG_GIGASET_M101=m
# CONFIG_GIGASET_DEBUG is not set
CONFIG_HYSDN=m
CONFIG_HYSDN_CAPI=y
CONFIG_MISDN=m
CONFIG_MISDN_DSP=m
CONFIG_MISDN_L1OIP=m

#
# mISDN hardware drivers
#
CONFIG_MISDN_HFCPCI=m
CONFIG_MISDN_HFCMULTI=m
CONFIG_MISDN_HFCUSB=m
CONFIG_MISDN_AVMFRITZ=m
CONFIG_MISDN_SPEEDFAX=m
CONFIG_MISDN_INFINEON=m
CONFIG_MISDN_W6692=m
CONFIG_MISDN_NETJET=m
CONFIG_MISDN_IPAC=m
CONFIG_MISDN_ISAR=m
CONFIG_ISDN_HDLC=m
# CONFIG_NVM is not set

#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_LEDS=y
CONFIG_INPUT_FF_MEMLESS=m
CONFIG_INPUT_POLLDEV=m
CONFIG_INPUT_SPARSEKMAP=m
# CONFIG_INPUT_MATRIXKMAP is not set

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_GPIO is not set
# CONFIG_KEYBOARD_GPIO_POLLED is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_TM2_TOUCHKEY is not set
# CONFIG_KEYBOARD_XTKBD is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_BYD=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_CYPRESS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
CONFIG_MOUSE_PS2_ELANTECH=y
CONFIG_MOUSE_PS2_SENTELIC=y
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
CONFIG_MOUSE_PS2_FOCALTECH=y
# CONFIG_MOUSE_PS2_VMMOUSE is not set
CONFIG_MOUSE_SERIAL=m
CONFIG_MOUSE_APPLETOUCH=m
CONFIG_MOUSE_BCM5974=m
CONFIG_MOUSE_CYAPA=m
# CONFIG_MOUSE_ELAN_I2C is not set
CONFIG_MOUSE_VSXXXAA=m
# CONFIG_MOUSE_GPIO is not set
CONFIG_MOUSE_SYNAPTICS_I2C=m
CONFIG_MOUSE_SYNAPTICS_USB=m
# CONFIG_INPUT_JOYSTICK is not set
CONFIG_INPUT_TABLET=y
CONFIG_TABLET_USB_ACECAD=m
CONFIG_TABLET_USB_AIPTEK=m
CONFIG_TABLET_USB_GTCO=m
# CONFIG_TABLET_USB_HANWANG is not set
CONFIG_TABLET_USB_KBTAB=m
# CONFIG_TABLET_USB_PEGASUS is not set
# CONFIG_TABLET_SERIAL_WACOM4 is not set
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_PROPERTIES=y
# CONFIG_TOUCHSCREEN_ADS7846 is not set
# CONFIG_TOUCHSCREEN_AD7877 is not set
# CONFIG_TOUCHSCREEN_AD7879 is not set
# CONFIG_TOUCHSCREEN_ATMEL_MXT is not set
# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
# CONFIG_TOUCHSCREEN_CYTTSP4_CORE is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_EGALAX_SERIAL is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GOODIX is not set
# CONFIG_TOUCHSCREEN_ILI210X is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_EKTF2127 is not set
# CONFIG_TOUCHSCREEN_ELAN is not set
# CONFIG_TOUCHSCREEN_ELO is not set
CONFIG_TOUCHSCREEN_WACOM_W8001=m
CONFIG_TOUCHSCREEN_WACOM_I2C=m
# CONFIG_TOUCHSCREEN_MAX11801 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MMS114 is not set
# CONFIG_TOUCHSCREEN_MELFAS_MIP4 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_PIXCIR is not set
# CONFIG_TOUCHSCREEN_WDT87XX_I2C is not set
# CONFIG_TOUCHSCREEN_WM97XX is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
# CONFIG_TOUCHSCREEN_TSC2004 is not set
# CONFIG_TOUCHSCREEN_TSC2005 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_TOUCHSCREEN_RM_TS is not set
# CONFIG_TOUCHSCREEN_SILEAD is not set
# CONFIG_TOUCHSCREEN_SIS_I2C is not set
# CONFIG_TOUCHSCREEN_ST1232 is not set
# CONFIG_TOUCHSCREEN_SUR40 is not set
# CONFIG_TOUCHSCREEN_SURFACE3_SPI is not set
# CONFIG_TOUCHSCREEN_SX8654 is not set
# CONFIG_TOUCHSCREEN_TPS6507X is not set
# CONFIG_TOUCHSCREEN_ZET6223 is not set
# CONFIG_TOUCHSCREEN_ZFORCE is not set
# CONFIG_TOUCHSCREEN_ROHM_BU21023 is not set
CONFIG_INPUT_MISC=y
# CONFIG_INPUT_AD714X is not set
# CONFIG_INPUT_BMA150 is not set
# CONFIG_INPUT_E3X0_BUTTON is not set
CONFIG_INPUT_PCSPKR=m
# CONFIG_INPUT_MMA8450 is not set
CONFIG_INPUT_APANEL=m
# CONFIG_INPUT_GP2A is not set
# CONFIG_INPUT_GPIO_BEEPER is not set
# CONFIG_INPUT_GPIO_TILT_POLLED is not set
# CONFIG_INPUT_GPIO_DECODER is not set
CONFIG_INPUT_ATLAS_BTNS=m
CONFIG_INPUT_ATI_REMOTE2=m
CONFIG_INPUT_KEYSPAN_REMOTE=m
# CONFIG_INPUT_KXTJ9 is not set
CONFIG_INPUT_POWERMATE=m
CONFIG_INPUT_YEALINK=m
CONFIG_INPUT_CM109=m
CONFIG_INPUT_UINPUT=m
# CONFIG_INPUT_PCF8574 is not set
# CONFIG_INPUT_PWM_BEEPER is not set
# CONFIG_INPUT_GPIO_ROTARY_ENCODER is not set
# CONFIG_INPUT_ADXL34X is not set
# CONFIG_INPUT_IMS_PCU is not set
# CONFIG_INPUT_CMA3000 is not set
CONFIG_INPUT_XEN_KBDDEV_FRONTEND=m
# CONFIG_INPUT_IDEAPAD_SLIDEBAR is not set
# CONFIG_INPUT_DRV260X_HAPTICS is not set
# CONFIG_INPUT_DRV2665_HAPTICS is not set
# CONFIG_INPUT_DRV2667_HAPTICS is not set
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PARKBD is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=m
CONFIG_SERIO_ALTERA_PS2=m
# CONFIG_SERIO_PS2MULT is not set
CONFIG_SERIO_ARC_PS2=m
CONFIG_HYPERV_KEYBOARD=m
# CONFIG_USERIO is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_ROCKETPORT is not set
CONFIG_CYCLADES=m
# CONFIG_CYZ_INTR is not set
CONFIG_MOXA_INTELLIO=m
CONFIG_MOXA_SMARTIO=m
CONFIG_SYNCLINK=m
CONFIG_SYNCLINKMP=m
CONFIG_SYNCLINK_GT=m
CONFIG_NOZOMI=m
# CONFIG_ISI is not set
CONFIG_N_HDLC=m
CONFIG_N_GSM=m
# CONFIG_TRACE_SINK is not set
CONFIG_DEVMEM=y
# CONFIG_DEVKMEM is not set

#
# Serial drivers
#
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
CONFIG_SERIAL_8250_PNP=y
# CONFIG_SERIAL_8250_FINTEK is not set
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DMA=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_EXAR=y
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_SERIAL_8250_DETECT_IRQ is not set
CONFIG_SERIAL_8250_RSA=y
# CONFIG_SERIAL_8250_FSL is not set
CONFIG_SERIAL_8250_DW=y
# CONFIG_SERIAL_8250_RT288X is not set
CONFIG_SERIAL_8250_LPSS=y
CONFIG_SERIAL_8250_MID=y
# CONFIG_SERIAL_8250_MOXA is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_MAX3100 is not set
# CONFIG_SERIAL_MAX310X is not set
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_SERIAL_JSM=m
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_IFX6X60 is not set
CONFIG_SERIAL_ARC=m
CONFIG_SERIAL_ARC_NR_PORTS=1
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_TTY_PRINTK is not set
CONFIG_PRINTER=m
# CONFIG_LP_CONSOLE is not set
CONFIG_PPDEV=m
CONFIG_HVC_DRIVER=y
CONFIG_HVC_IRQ=y
CONFIG_HVC_XEN=y
CONFIG_HVC_XEN_FRONTEND=y
CONFIG_VIRTIO_CONSOLE=y
CONFIG_IPMI_HANDLER=m
# CONFIG_IPMI_PANIC_EVENT is not set
CONFIG_IPMI_DEVICE_INTERFACE=m
CONFIG_IPMI_SI=m
# CONFIG_IPMI_SSIF is not set
CONFIG_IPMI_WATCHDOG=m
CONFIG_IPMI_POWEROFF=m
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_TIMERIOMEM=m
CONFIG_HW_RANDOM_INTEL=m
CONFIG_HW_RANDOM_AMD=m
CONFIG_HW_RANDOM_VIA=m
CONFIG_HW_RANDOM_VIRTIO=y
CONFIG_HW_RANDOM_TPM=m
CONFIG_NVRAM=y
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_MWAVE is not set
CONFIG_RAW_DRIVER=y
CONFIG_MAX_RAW_DEVS=8192
CONFIG_HPET=y
CONFIG_HPET_MMAP=y
# CONFIG_HPET_MMAP_DEFAULT is not set
CONFIG_HANGCHECK_TIMER=m
CONFIG_UV_MMTIMER=m
CONFIG_TCG_TPM=y
CONFIG_TCG_TIS_CORE=y
CONFIG_TCG_TIS=y
# CONFIG_TCG_TIS_SPI is not set
# CONFIG_TCG_TIS_I2C_ATMEL is not set
# CONFIG_TCG_TIS_I2C_INFINEON is not set
# CONFIG_TCG_TIS_I2C_NUVOTON is not set
CONFIG_TCG_NSC=m
CONFIG_TCG_ATMEL=m
CONFIG_TCG_INFINEON=m
# CONFIG_TCG_XEN is not set
# CONFIG_TCG_CRB is not set
# CONFIG_TCG_VTPM_PROXY is not set
# CONFIG_TCG_TIS_ST33ZP24_I2C is not set
# CONFIG_TCG_TIS_ST33ZP24_SPI is not set
CONFIG_TELCLOCK=m
CONFIG_DEVPORT=y
# CONFIG_XILLYBUS is not set

#
# I2C support
#
CONFIG_I2C=y
CONFIG_ACPI_I2C_OPREGION=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=m
CONFIG_I2C_MUX=m

#
# Multiplexer I2C Chip support
#
# CONFIG_I2C_MUX_GPIO is not set
# CONFIG_I2C_MUX_PCA9541 is not set
# CONFIG_I2C_MUX_PCA954x is not set
# CONFIG_I2C_MUX_PINCTRL is not set
# CONFIG_I2C_MUX_REG is not set
# CONFIG_I2C_MUX_MLXCPLD is not set
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_SMBUS=y
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_ALGOPCA=m

#
# I2C Hardware Bus support
#

#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
CONFIG_I2C_AMD756=m
CONFIG_I2C_AMD756_S4882=m
CONFIG_I2C_AMD8111=m
CONFIG_I2C_I801=y
CONFIG_I2C_ISCH=m
CONFIG_I2C_ISMT=m
CONFIG_I2C_PIIX4=m
CONFIG_I2C_NFORCE2=m
CONFIG_I2C_NFORCE2_S4985=m
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
CONFIG_I2C_SIS96X=m
CONFIG_I2C_VIA=m
CONFIG_I2C_VIAPRO=m

#
# ACPI drivers
#
CONFIG_I2C_SCMI=m

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_CBUS_GPIO is not set
CONFIG_I2C_DESIGNWARE_CORE=m
CONFIG_I2C_DESIGNWARE_PLATFORM=m
CONFIG_I2C_DESIGNWARE_PCI=m
# CONFIG_I2C_DESIGNWARE_BAYTRAIL is not set
# CONFIG_I2C_EMEV2 is not set
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_OCORES is not set
CONFIG_I2C_PCA_PLATFORM=m
# CONFIG_I2C_PXA_PCI is not set
CONFIG_I2C_SIMTEC=m
# CONFIG_I2C_XILINX is not set

#
# External I2C/SMBus adapter drivers
#
CONFIG_I2C_DIOLAN_U2C=m
CONFIG_I2C_PARPORT=m
CONFIG_I2C_PARPORT_LIGHT=m
# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
# CONFIG_I2C_TAOS_EVM is not set
CONFIG_I2C_TINY_USB=m
CONFIG_I2C_VIPERBOARD=m

#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_MLXCPLD is not set
CONFIG_I2C_STUB=m
# CONFIG_I2C_SLAVE is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
CONFIG_SPI=y
# CONFIG_SPI_DEBUG is not set
CONFIG_SPI_MASTER=y

#
# SPI Master Controller Drivers
#
# CONFIG_SPI_ALTERA is not set
# CONFIG_SPI_AXI_SPI_ENGINE is not set
# CONFIG_SPI_BITBANG is not set
# CONFIG_SPI_BUTTERFLY is not set
# CONFIG_SPI_CADENCE is not set
CONFIG_SPI_DESIGNWARE=m
# CONFIG_SPI_DW_PCI is not set
# CONFIG_SPI_DW_MMIO is not set
# CONFIG_SPI_GPIO is not set
# CONFIG_SPI_LM70_LLP is not set
# CONFIG_SPI_OC_TINY is not set
CONFIG_SPI_PXA2XX=m
CONFIG_SPI_PXA2XX_PCI=m
# CONFIG_SPI_ROCKCHIP is not set
# CONFIG_SPI_SC18IS602 is not set
# CONFIG_SPI_XCOMM is not set
# CONFIG_SPI_XILINX is not set
# CONFIG_SPI_ZYNQMP_GQSPI is not set

#
# SPI Protocol Masters
#
# CONFIG_SPI_SPIDEV is not set
# CONFIG_SPI_LOOPBACK_TEST is not set
# CONFIG_SPI_TLE62X0 is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set

#
# PPS support
#
CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set

#
# PPS clients support
#
# CONFIG_PPS_CLIENT_KTIMER is not set
CONFIG_PPS_CLIENT_LDISC=m
CONFIG_PPS_CLIENT_PARPORT=m
CONFIG_PPS_CLIENT_GPIO=m

#
# PPS generators support
#

#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK=y
CONFIG_DP83640_PHY=m
CONFIG_PTP_1588_CLOCK_KVM=y
CONFIG_PINCTRL=y

#
# Pin controllers
#
CONFIG_PINMUX=y
CONFIG_PINCONF=y
CONFIG_GENERIC_PINCONF=y
# CONFIG_DEBUG_PINCTRL is not set
# CONFIG_PINCTRL_AMD is not set
# CONFIG_PINCTRL_SX150X is not set
CONFIG_PINCTRL_BAYTRAIL=y
# CONFIG_PINCTRL_CHERRYVIEW is not set
# CONFIG_PINCTRL_BROXTON is not set
# CONFIG_PINCTRL_GEMINILAKE is not set
# CONFIG_PINCTRL_SUNRISEPOINT is not set
CONFIG_GPIOLIB=y
CONFIG_GPIO_ACPI=y
CONFIG_GPIOLIB_IRQCHIP=y
# CONFIG_DEBUG_GPIO is not set
CONFIG_GPIO_SYSFS=y

#
# Memory mapped GPIO drivers
#
# CONFIG_GPIO_AMDPT is not set
# CONFIG_GPIO_DWAPB is not set
# CONFIG_GPIO_EXAR is not set
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_ICH is not set
CONFIG_GPIO_LYNXPOINT=m
CONFIG_GPIO_MOCKUP=y
# CONFIG_GPIO_VX855 is not set

#
# Port-mapped I/O GPIO drivers
#
# CONFIG_GPIO_F7188X is not set
# CONFIG_GPIO_IT87 is not set
# CONFIG_GPIO_SCH is not set
# CONFIG_GPIO_SCH311X is not set

#
# I2C GPIO expanders
#
# CONFIG_GPIO_ADP5588 is not set
# CONFIG_GPIO_MAX7300 is not set
# CONFIG_GPIO_MAX732X is not set
# CONFIG_GPIO_PCA953X is not set
# CONFIG_GPIO_PCF857X is not set
# CONFIG_GPIO_SX150X is not set
# CONFIG_GPIO_TPIC2810 is not set

#
# MFD GPIO expanders
#

#
# PCI GPIO expanders
#
# CONFIG_GPIO_AMD8111 is not set
# CONFIG_GPIO_ML_IOH is not set
# CONFIG_GPIO_PCI_IDIO_16 is not set
# CONFIG_GPIO_RDC321X is not set

#
# SPI GPIO expanders
#
# CONFIG_GPIO_MAX7301 is not set
# CONFIG_GPIO_MC33880 is not set
# CONFIG_GPIO_PISOSR is not set

#
# SPI or I2C GPIO expanders
#

#
# USB GPIO expanders
#
# CONFIG_GPIO_VIPERBOARD is not set
# CONFIG_W1 is not set
# CONFIG_POWER_AVS is not set
CONFIG_POWER_RESET=y
# CONFIG_POWER_RESET_RESTART is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_TEST_POWER is not set
# CONFIG_BATTERY_DS2780 is not set
# CONFIG_BATTERY_DS2781 is not set
# CONFIG_BATTERY_DS2782 is not set
# CONFIG_BATTERY_SBS is not set
# CONFIG_CHARGER_SBS is not set
# CONFIG_BATTERY_BQ27XXX is not set
# CONFIG_BATTERY_MAX17040 is not set
# CONFIG_BATTERY_MAX17042 is not set
# CONFIG_CHARGER_ISP1704 is not set
# CONFIG_CHARGER_MAX8903 is not set
# CONFIG_CHARGER_LP8727 is not set
# CONFIG_CHARGER_GPIO is not set
# CONFIG_CHARGER_BQ2415X is not set
# CONFIG_CHARGER_BQ24190 is not set
# CONFIG_CHARGER_BQ24257 is not set
# CONFIG_CHARGER_BQ24735 is not set
# CONFIG_CHARGER_BQ25890 is not set
CONFIG_CHARGER_SMB347=m
# CONFIG_BATTERY_GAUGE_LTC2941 is not set
# CONFIG_CHARGER_RT9455 is not set
CONFIG_HWMON=y
CONFIG_HWMON_VID=m
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
CONFIG_SENSORS_ABITUGURU=m
CONFIG_SENSORS_ABITUGURU3=m
# CONFIG_SENSORS_AD7314 is not set
CONFIG_SENSORS_AD7414=m
CONFIG_SENSORS_AD7418=m
CONFIG_SENSORS_ADM1021=m
CONFIG_SENSORS_ADM1025=m
CONFIG_SENSORS_ADM1026=m
CONFIG_SENSORS_ADM1029=m
CONFIG_SENSORS_ADM1031=m
CONFIG_SENSORS_ADM9240=m
CONFIG_SENSORS_ADT7X10=m
# CONFIG_SENSORS_ADT7310 is not set
CONFIG_SENSORS_ADT7410=m
CONFIG_SENSORS_ADT7411=m
CONFIG_SENSORS_ADT7462=m
CONFIG_SENSORS_ADT7470=m
CONFIG_SENSORS_ADT7475=m
CONFIG_SENSORS_ASC7621=m
CONFIG_SENSORS_K8TEMP=m
CONFIG_SENSORS_K10TEMP=m
CONFIG_SENSORS_FAM15H_POWER=m
CONFIG_SENSORS_APPLESMC=m
CONFIG_SENSORS_ASB100=m
CONFIG_SENSORS_ATXP1=m
CONFIG_SENSORS_DS620=m
CONFIG_SENSORS_DS1621=m
CONFIG_SENSORS_DELL_SMM=m
CONFIG_SENSORS_I5K_AMB=m
CONFIG_SENSORS_F71805F=m
CONFIG_SENSORS_F71882FG=m
CONFIG_SENSORS_F75375S=m
CONFIG_SENSORS_FSCHMD=m
# CONFIG_SENSORS_FTSTEUTATES is not set
CONFIG_SENSORS_GL518SM=m
CONFIG_SENSORS_GL520SM=m
CONFIG_SENSORS_G760A=m
# CONFIG_SENSORS_G762 is not set
# CONFIG_SENSORS_GPIO_FAN is not set
# CONFIG_SENSORS_HIH6130 is not set
CONFIG_SENSORS_IBMAEM=m
CONFIG_SENSORS_IBMPEX=m
# CONFIG_SENSORS_I5500 is not set
CONFIG_SENSORS_CORETEMP=m
CONFIG_SENSORS_IT87=m
# CONFIG_SENSORS_JC42 is not set
# CONFIG_SENSORS_POWR1220 is not set
CONFIG_SENSORS_LINEAGE=m
# CONFIG_SENSORS_LTC2945 is not set
# CONFIG_SENSORS_LTC2990 is not set
CONFIG_SENSORS_LTC4151=m
CONFIG_SENSORS_LTC4215=m
# CONFIG_SENSORS_LTC4222 is not set
CONFIG_SENSORS_LTC4245=m
# CONFIG_SENSORS_LTC4260 is not set
CONFIG_SENSORS_LTC4261=m
# CONFIG_SENSORS_MAX1111 is not set
CONFIG_SENSORS_MAX16065=m
CONFIG_SENSORS_MAX1619=m
CONFIG_SENSORS_MAX1668=m
CONFIG_SENSORS_MAX197=m
# CONFIG_SENSORS_MAX31722 is not set
CONFIG_SENSORS_MAX6639=m
CONFIG_SENSORS_MAX6642=m
CONFIG_SENSORS_MAX6650=m
CONFIG_SENSORS_MAX6697=m
# CONFIG_SENSORS_MAX31790 is not set
CONFIG_SENSORS_MCP3021=m
# CONFIG_SENSORS_TC654 is not set
# CONFIG_SENSORS_ADCXX is not set
CONFIG_SENSORS_LM63=m
# CONFIG_SENSORS_LM70 is not set
CONFIG_SENSORS_LM73=m
CONFIG_SENSORS_LM75=m
CONFIG_SENSORS_LM77=m
CONFIG_SENSORS_LM78=m
CONFIG_SENSORS_LM80=m
CONFIG_SENSORS_LM83=m
CONFIG_SENSORS_LM85=m
CONFIG_SENSORS_LM87=m
CONFIG_SENSORS_LM90=m
CONFIG_SENSORS_LM92=m
CONFIG_SENSORS_LM93=m
CONFIG_SENSORS_LM95234=m
CONFIG_SENSORS_LM95241=m
CONFIG_SENSORS_LM95245=m
CONFIG_SENSORS_PC87360=m
CONFIG_SENSORS_PC87427=m
CONFIG_SENSORS_NTC_THERMISTOR=m
# CONFIG_SENSORS_NCT6683 is not set
CONFIG_SENSORS_NCT6775=m
# CONFIG_SENSORS_NCT7802 is not set
# CONFIG_SENSORS_NCT7904 is not set
CONFIG_SENSORS_PCF8591=m
CONFIG_PMBUS=m
CONFIG_SENSORS_PMBUS=m
CONFIG_SENSORS_ADM1275=m
CONFIG_SENSORS_LM25066=m
CONFIG_SENSORS_LTC2978=m
# CONFIG_SENSORS_LTC3815 is not set
CONFIG_SENSORS_MAX16064=m
# CONFIG_SENSORS_MAX20751 is not set
CONFIG_SENSORS_MAX34440=m
CONFIG_SENSORS_MAX8688=m
# CONFIG_SENSORS_TPS40422 is not set
CONFIG_SENSORS_UCD9000=m
CONFIG_SENSORS_UCD9200=m
CONFIG_SENSORS_ZL6100=m
# CONFIG_SENSORS_SHT15 is not set
CONFIG_SENSORS_SHT21=m
# CONFIG_SENSORS_SHT3x is not set
# CONFIG_SENSORS_SHTC1 is not set
CONFIG_SENSORS_SIS5595=m
CONFIG_SENSORS_DME1737=m
CONFIG_SENSORS_EMC1403=m
# CONFIG_SENSORS_EMC2103 is not set
CONFIG_SENSORS_EMC6W201=m
CONFIG_SENSORS_SMSC47M1=m
CONFIG_SENSORS_SMSC47M192=m
CONFIG_SENSORS_SMSC47B397=m
CONFIG_SENSORS_SCH56XX_COMMON=m
CONFIG_SENSORS_SCH5627=m
CONFIG_SENSORS_SCH5636=m
# CONFIG_SENSORS_STTS751 is not set
# CONFIG_SENSORS_SMM665 is not set
# CONFIG_SENSORS_ADC128D818 is not set
CONFIG_SENSORS_ADS1015=m
CONFIG_SENSORS_ADS7828=m
# CONFIG_SENSORS_ADS7871 is not set
CONFIG_SENSORS_AMC6821=m
CONFIG_SENSORS_INA209=m
CONFIG_SENSORS_INA2XX=m
# CONFIG_SENSORS_INA3221 is not set
# CONFIG_SENSORS_TC74 is not set
CONFIG_SENSORS_THMC50=m
CONFIG_SENSORS_TMP102=m
# CONFIG_SENSORS_TMP103 is not set
# CONFIG_SENSORS_TMP108 is not set
CONFIG_SENSORS_TMP401=m
CONFIG_SENSORS_TMP421=m
CONFIG_SENSORS_VIA_CPUTEMP=m
CONFIG_SENSORS_VIA686A=m
CONFIG_SENSORS_VT1211=m
CONFIG_SENSORS_VT8231=m
CONFIG_SENSORS_W83781D=m
CONFIG_SENSORS_W83791D=m
CONFIG_SENSORS_W83792D=m
CONFIG_SENSORS_W83793=m
CONFIG_SENSORS_W83795=m
# CONFIG_SENSORS_W83795_FANCTRL is not set
CONFIG_SENSORS_W83L785TS=m
CONFIG_SENSORS_W83L786NG=m
CONFIG_SENSORS_W83627HF=m
CONFIG_SENSORS_W83627EHF=m
# CONFIG_SENSORS_XGENE is not set

#
# ACPI drivers
#
CONFIG_SENSORS_ACPI_POWER=m
CONFIG_SENSORS_ATK0110=m
CONFIG_THERMAL=y
CONFIG_THERMAL_HWMON=y
CONFIG_THERMAL_WRITABLE_TRIPS=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
# CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR is not set
CONFIG_THERMAL_GOV_FAIR_SHARE=y
CONFIG_THERMAL_GOV_STEP_WISE=y
CONFIG_THERMAL_GOV_BANG_BANG=y
CONFIG_THERMAL_GOV_USER_SPACE=y
# CONFIG_THERMAL_GOV_POWER_ALLOCATOR is not set
# CONFIG_THERMAL_EMULATION is not set
CONFIG_INTEL_POWERCLAMP=m
CONFIG_X86_PKG_TEMP_THERMAL=m
# CONFIG_INTEL_SOC_DTS_THERMAL is not set

#
# ACPI INT340X thermal drivers
#
# CONFIG_INT340X_THERMAL is not set
CONFIG_INTEL_PCH_THERMAL=m
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_CORE=y
# CONFIG_WATCHDOG_NOWAYOUT is not set
# CONFIG_WATCHDOG_SYSFS is not set

#
# Watchdog Device Drivers
#
CONFIG_SOFT_WATCHDOG=m
# CONFIG_WDAT_WDT is not set
# CONFIG_XILINX_WATCHDOG is not set
# CONFIG_ZIIRAVE_WATCHDOG is not set
# CONFIG_CADENCE_WATCHDOG is not set
# CONFIG_DW_WATCHDOG is not set
# CONFIG_MAX63XX_WATCHDOG is not set
# CONFIG_ACQUIRE_WDT is not set
# CONFIG_ADVANTECH_WDT is not set
CONFIG_ALIM1535_WDT=m
CONFIG_ALIM7101_WDT=m
CONFIG_F71808E_WDT=m
CONFIG_SP5100_TCO=m
CONFIG_SBC_FITPC2_WATCHDOG=m
# CONFIG_EUROTECH_WDT is not set
CONFIG_IB700_WDT=m
CONFIG_IBMASR=m
# CONFIG_WAFER_WDT is not set
CONFIG_I6300ESB_WDT=y
CONFIG_IE6XX_WDT=m
CONFIG_ITCO_WDT=y
CONFIG_ITCO_VENDOR_SUPPORT=y
CONFIG_IT8712F_WDT=m
CONFIG_IT87_WDT=m
CONFIG_HP_WATCHDOG=m
CONFIG_HPWDT_NMI_DECODING=y
# CONFIG_SC1200_WDT is not set
# CONFIG_PC87413_WDT is not set
CONFIG_NV_TCO=m
# CONFIG_60XX_WDT is not set
# CONFIG_CPU5_WDT is not set
CONFIG_SMSC_SCH311X_WDT=m
# CONFIG_SMSC37B787_WDT is not set
CONFIG_VIA_WDT=m
CONFIG_W83627HF_WDT=m
CONFIG_W83877F_WDT=m
CONFIG_W83977F_WDT=m
CONFIG_MACHZ_WDT=m
# CONFIG_SBC_EPX_C3_WATCHDOG is not set
# CONFIG_INTEL_MEI_WDT is not set
# CONFIG_NI903X_WDT is not set
# CONFIG_NIC7018_WDT is not set
# CONFIG_MEN_A21_WDT is not set
CONFIG_XEN_WDT=m

#
# PCI-based Watchdog Cards
#
CONFIG_PCIPCWATCHDOG=m
CONFIG_WDTPCI=m

#
# USB-based Watchdog Cards
#
CONFIG_USBPCWATCHDOG=m

#
# Watchdog Pretimeout Governors
#
# CONFIG_WATCHDOG_PRETIMEOUT_GOV is not set
CONFIG_SSB_POSSIBLE=y

#
# Sonics Silicon Backplane
#
CONFIG_SSB=m
CONFIG_SSB_SPROM=y
CONFIG_SSB_PCIHOST_POSSIBLE=y
CONFIG_SSB_PCIHOST=y
# CONFIG_SSB_B43_PCI_BRIDGE is not set
CONFIG_SSB_SDIOHOST_POSSIBLE=y
CONFIG_SSB_SDIOHOST=y
# CONFIG_SSB_SILENT is not set
# CONFIG_SSB_DEBUG is not set
CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
CONFIG_SSB_DRIVER_PCICORE=y
# CONFIG_SSB_DRIVER_GPIO is not set
CONFIG_BCMA_POSSIBLE=y

#
# Broadcom specific AMBA
#
CONFIG_BCMA=m
CONFIG_BCMA_HOST_PCI_POSSIBLE=y
CONFIG_BCMA_HOST_PCI=y
# CONFIG_BCMA_HOST_SOC is not set
CONFIG_BCMA_DRIVER_PCI=y
CONFIG_BCMA_DRIVER_GMAC_CMN=y
# CONFIG_BCMA_DRIVER_GPIO is not set
# CONFIG_BCMA_DEBUG is not set

#
# Multifunction device drivers
#
CONFIG_MFD_CORE=y
# CONFIG_MFD_AS3711 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_AAT2870_CORE is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_AXP20X_I2C is not set
# CONFIG_MFD_CROS_EC is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_SPI is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
# CONFIG_MFD_DA9062 is not set
# CONFIG_MFD_DA9063 is not set
# CONFIG_MFD_DA9150 is not set
# CONFIG_MFD_DLN2 is not set
# CONFIG_MFD_MC13XXX_SPI is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_HTC_I2CPLD is not set
# CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not set
CONFIG_LPC_ICH=y
CONFIG_LPC_SCH=m
# CONFIG_INTEL_SOC_PMIC is not set
# CONFIG_MFD_INTEL_LPSS_ACPI is not set
# CONFIG_MFD_INTEL_LPSS_PCI is not set
# CONFIG_MFD_JANZ_CMODIO is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_MAX14577 is not set
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX77843 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
# CONFIG_EZX_PCAP is not set
CONFIG_MFD_VIPERBOARD=m
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_UCB1400_CORE is not set
# CONFIG_MFD_RDC321X is not set
CONFIG_MFD_RTSX_PCI=m
# CONFIG_MFD_RT5033 is not set
# CONFIG_MFD_RTSX_USB is not set
# CONFIG_MFD_RC5T583 is not set
# CONFIG_MFD_SEC_CORE is not set
# CONFIG_MFD_SI476X_CORE is not set
CONFIG_MFD_SM501=m
# CONFIG_MFD_SM501_GPIO is not set
# CONFIG_MFD_SKY81452 is not set
# CONFIG_MFD_SMSC is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_LP3943 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS65010 is not set
# CONFIG_TPS6507X is not set
# CONFIG_MFD_TPS65086 is not set
# CONFIG_MFD_TPS65090 is not set
# CONFIG_MFD_TPS65217 is not set
# CONFIG_MFD_TI_LP873X is not set
# CONFIG_MFD_TPS65218 is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65910 is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_MFD_TPS65912_SPI is not set
# CONFIG_MFD_TPS80031 is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_TMIO is not set
CONFIG_MFD_VX855=m
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_ARIZONA_SPI is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM831X_SPI is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_WM8994 is not set
# CONFIG_REGULATOR is not set
CONFIG_MEDIA_SUPPORT=m

#
# Multimedia core support
#
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
CONFIG_MEDIA_RADIO_SUPPORT=y
# CONFIG_MEDIA_SDR_SUPPORT is not set
CONFIG_MEDIA_RC_SUPPORT=y
# CONFIG_MEDIA_CEC_SUPPORT is not set
# CONFIG_MEDIA_CONTROLLER is not set
CONFIG_VIDEO_DEV=m
CONFIG_VIDEO_V4L2=m
# CONFIG_VIDEO_ADV_DEBUG is not set
# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
CONFIG_VIDEO_TUNER=m
CONFIG_VIDEOBUF_GEN=m
CONFIG_VIDEOBUF_DMA_SG=m
CONFIG_VIDEOBUF_VMALLOC=m
CONFIG_VIDEOBUF_DVB=m
CONFIG_VIDEOBUF2_CORE=m
CONFIG_VIDEOBUF2_MEMOPS=m
CONFIG_VIDEOBUF2_VMALLOC=m
CONFIG_VIDEOBUF2_DMA_SG=m
CONFIG_VIDEOBUF2_DVB=m
CONFIG_DVB_CORE=m
CONFIG_DVB_NET=y
CONFIG_TTPCI_EEPROM=m
CONFIG_DVB_MAX_ADAPTERS=8
CONFIG_DVB_DYNAMIC_MINORS=y
# CONFIG_DVB_DEMUX_SECTION_LOSS_LOG is not set

#
# Media drivers
#
CONFIG_RC_CORE=m
CONFIG_RC_MAP=m
CONFIG_RC_DECODERS=y
CONFIG_LIRC=m
CONFIG_IR_LIRC_CODEC=m
CONFIG_IR_NEC_DECODER=m
CONFIG_IR_RC5_DECODER=m
CONFIG_IR_RC6_DECODER=m
CONFIG_IR_JVC_DECODER=m
CONFIG_IR_SONY_DECODER=m
CONFIG_IR_SANYO_DECODER=m
CONFIG_IR_SHARP_DECODER=m
CONFIG_IR_MCE_KBD_DECODER=m
CONFIG_IR_XMP_DECODER=m
CONFIG_RC_DEVICES=y
CONFIG_RC_ATI_REMOTE=m
CONFIG_IR_ENE=m
# CONFIG_IR_HIX5HD2 is not set
CONFIG_IR_IMON=m
CONFIG_IR_MCEUSB=m
CONFIG_IR_ITE_CIR=m
CONFIG_IR_FINTEK=m
CONFIG_IR_NUVOTON=m
CONFIG_IR_REDRAT3=m
# CONFIG_IR_SPI is not set
CONFIG_IR_STREAMZAP=m
CONFIG_IR_WINBOND_CIR=m
# CONFIG_IR_IGORPLUGUSB is not set
CONFIG_IR_IGUANA=m
CONFIG_IR_TTUSBIR=m
# CONFIG_RC_LOOPBACK is not set
CONFIG_IR_GPIO_CIR=m
# CONFIG_IR_SERIAL is not set
CONFIG_MEDIA_USB_SUPPORT=y

#
# Webcam devices
#
CONFIG_USB_VIDEO_CLASS=m
CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y
CONFIG_USB_GSPCA=m
CONFIG_USB_M5602=m
CONFIG_USB_STV06XX=m
CONFIG_USB_GL860=m
CONFIG_USB_GSPCA_BENQ=m
CONFIG_USB_GSPCA_CONEX=m
CONFIG_USB_GSPCA_CPIA1=m
# CONFIG_USB_GSPCA_DTCS033 is not set
CONFIG_USB_GSPCA_ETOMS=m
CONFIG_USB_GSPCA_FINEPIX=m
CONFIG_USB_GSPCA_JEILINJ=m
CONFIG_USB_GSPCA_JL2005BCD=m
# CONFIG_USB_GSPCA_KINECT is not set
CONFIG_USB_GSPCA_KONICA=m
CONFIG_USB_GSPCA_MARS=m
CONFIG_USB_GSPCA_MR97310A=m
CONFIG_USB_GSPCA_NW80X=m
CONFIG_USB_GSPCA_OV519=m
CONFIG_USB_GSPCA_OV534=m
CONFIG_USB_GSPCA_OV534_9=m
CONFIG_USB_GSPCA_PAC207=m
CONFIG_USB_GSPCA_PAC7302=m
CONFIG_USB_GSPCA_PAC7311=m
CONFIG_USB_GSPCA_SE401=m
CONFIG_USB_GSPCA_SN9C2028=m
CONFIG_USB_GSPCA_SN9C20X=m
CONFIG_USB_GSPCA_SONIXB=m
CONFIG_USB_GSPCA_SONIXJ=m
CONFIG_USB_GSPCA_SPCA500=m
CONFIG_USB_GSPCA_SPCA501=m
CONFIG_USB_GSPCA_SPCA505=m
CONFIG_USB_GSPCA_SPCA506=m
CONFIG_USB_GSPCA_SPCA508=m
CONFIG_USB_GSPCA_SPCA561=m
CONFIG_USB_GSPCA_SPCA1528=m
CONFIG_USB_GSPCA_SQ905=m
CONFIG_USB_GSPCA_SQ905C=m
CONFIG_USB_GSPCA_SQ930X=m
CONFIG_USB_GSPCA_STK014=m
# CONFIG_USB_GSPCA_STK1135 is not set
CONFIG_USB_GSPCA_STV0680=m
CONFIG_USB_GSPCA_SUNPLUS=m
CONFIG_USB_GSPCA_T613=m
CONFIG_USB_GSPCA_TOPRO=m
# CONFIG_USB_GSPCA_TOUPTEK is not set
CONFIG_USB_GSPCA_TV8532=m
CONFIG_USB_GSPCA_VC032X=m
CONFIG_USB_GSPCA_VICAM=m
CONFIG_USB_GSPCA_XIRLINK_CIT=m
CONFIG_USB_GSPCA_ZC3XX=m
CONFIG_USB_PWC=m
# CONFIG_USB_PWC_DEBUG is not set
CONFIG_USB_PWC_INPUT_EVDEV=y
# CONFIG_VIDEO_CPIA2 is not set
CONFIG_USB_ZR364XX=m
CONFIG_USB_STKWEBCAM=m
CONFIG_USB_S2255=m
# CONFIG_VIDEO_USBTV is not set

#
# Analog TV USB devices
#
CONFIG_VIDEO_PVRUSB2=m
CONFIG_VIDEO_PVRUSB2_SYSFS=y
CONFIG_VIDEO_PVRUSB2_DVB=y
# CONFIG_VIDEO_PVRUSB2_DEBUGIFC is not set
CONFIG_VIDEO_HDPVR=m
CONFIG_VIDEO_USBVISION=m
# CONFIG_VIDEO_STK1160_COMMON is not set
# CONFIG_VIDEO_GO7007 is not set

#
# Analog/digital TV USB devices
#
CONFIG_VIDEO_AU0828=m
CONFIG_VIDEO_AU0828_V4L2=y
# CONFIG_VIDEO_AU0828_RC is not set
CONFIG_VIDEO_CX231XX=m
CONFIG_VIDEO_CX231XX_RC=y
CONFIG_VIDEO_CX231XX_ALSA=m
CONFIG_VIDEO_CX231XX_DVB=m
CONFIG_VIDEO_TM6000=m
CONFIG_VIDEO_TM6000_ALSA=m
CONFIG_VIDEO_TM6000_DVB=m

#
# Digital TV USB devices
#
CONFIG_DVB_USB=m
# CONFIG_DVB_USB_DEBUG is not set
CONFIG_DVB_USB_DIB3000MC=m
CONFIG_DVB_USB_A800=m
CONFIG_DVB_USB_DIBUSB_MB=m
# CONFIG_DVB_USB_DIBUSB_MB_FAULTY is not set
CONFIG_DVB_USB_DIBUSB_MC=m
CONFIG_DVB_USB_DIB0700=m
CONFIG_DVB_USB_UMT_010=m
CONFIG_DVB_USB_CXUSB=m
CONFIG_DVB_USB_M920X=m
CONFIG_DVB_USB_DIGITV=m
CONFIG_DVB_USB_VP7045=m
CONFIG_DVB_USB_VP702X=m
CONFIG_DVB_USB_GP8PSK=m
CONFIG_DVB_USB_NOVA_T_USB2=m
CONFIG_DVB_USB_TTUSB2=m
CONFIG_DVB_USB_DTT200U=m
CONFIG_DVB_USB_OPERA1=m
CONFIG_DVB_USB_AF9005=m
CONFIG_DVB_USB_AF9005_REMOTE=m
CONFIG_DVB_USB_PCTV452E=m
CONFIG_DVB_USB_DW2102=m
CONFIG_DVB_USB_CINERGY_T2=m
CONFIG_DVB_USB_DTV5100=m
CONFIG_DVB_USB_FRIIO=m
CONFIG_DVB_USB_AZ6027=m
CONFIG_DVB_USB_TECHNISAT_USB2=m
CONFIG_DVB_USB_V2=m
CONFIG_DVB_USB_AF9015=m
CONFIG_DVB_USB_AF9035=m
CONFIG_DVB_USB_ANYSEE=m
CONFIG_DVB_USB_AU6610=m
CONFIG_DVB_USB_AZ6007=m
CONFIG_DVB_USB_CE6230=m
CONFIG_DVB_USB_EC168=m
CONFIG_DVB_USB_GL861=m
CONFIG_DVB_USB_LME2510=m
CONFIG_DVB_USB_MXL111SF=m
CONFIG_DVB_USB_RTL28XXU=m
# CONFIG_DVB_USB_DVBSKY is not set
# CONFIG_DVB_USB_ZD1301 is not set
CONFIG_DVB_TTUSB_BUDGET=m
CONFIG_DVB_TTUSB_DEC=m
CONFIG_SMS_USB_DRV=m
CONFIG_DVB_B2C2_FLEXCOP_USB=m
# CONFIG_DVB_B2C2_FLEXCOP_USB_DEBUG is not set
# CONFIG_DVB_AS102 is not set

#
# Webcam, TV (analog/digital) USB devices
#
CONFIG_VIDEO_EM28XX=m
# CONFIG_VIDEO_EM28XX_V4L2 is not set
CONFIG_VIDEO_EM28XX_ALSA=m
CONFIG_VIDEO_EM28XX_DVB=m
CONFIG_VIDEO_EM28XX_RC=m
CONFIG_MEDIA_PCI_SUPPORT=y

#
# Media capture support
#
# CONFIG_VIDEO_MEYE is not set
# CONFIG_VIDEO_SOLO6X10 is not set
# CONFIG_VIDEO_TW5864 is not set
# CONFIG_VIDEO_TW68 is not set
# CONFIG_VIDEO_TW686X is not set
# CONFIG_VIDEO_ZORAN is not set

#
# Media capture/analog TV support
#
CONFIG_VIDEO_IVTV=m
# CONFIG_VIDEO_IVTV_DEPRECATED_IOCTLS is not set
# CONFIG_VIDEO_IVTV_ALSA is not set
CONFIG_VIDEO_FB_IVTV=m
# CONFIG_VIDEO_HEXIUM_GEMINI is not set
# CONFIG_VIDEO_HEXIUM_ORION is not set
# CONFIG_VIDEO_MXB is not set
# CONFIG_VIDEO_DT3155 is not set

#
# Media capture/analog/hybrid TV support
#
CONFIG_VIDEO_CX18=m
CONFIG_VIDEO_CX18_ALSA=m
CONFIG_VIDEO_CX23885=m
CONFIG_MEDIA_ALTERA_CI=m
# CONFIG_VIDEO_CX25821 is not set
CONFIG_VIDEO_CX88=m
CONFIG_VIDEO_CX88_ALSA=m
CONFIG_VIDEO_CX88_BLACKBIRD=m
CONFIG_VIDEO_CX88_DVB=m
CONFIG_VIDEO_CX88_ENABLE_VP3054=y
CONFIG_VIDEO_CX88_VP3054=m
CONFIG_VIDEO_CX88_MPEG=m
CONFIG_VIDEO_BT848=m
CONFIG_DVB_BT8XX=m
CONFIG_VIDEO_SAA7134=m
CONFIG_VIDEO_SAA7134_ALSA=m
CONFIG_VIDEO_SAA7134_RC=y
CONFIG_VIDEO_SAA7134_DVB=m
CONFIG_VIDEO_SAA7164=m

#
# Media digital TV PCI Adapters
#
CONFIG_DVB_AV7110_IR=y
CONFIG_DVB_AV7110=m
CONFIG_DVB_AV7110_OSD=y
CONFIG_DVB_BUDGET_CORE=m
CONFIG_DVB_BUDGET=m
CONFIG_DVB_BUDGET_CI=m
CONFIG_DVB_BUDGET_AV=m
CONFIG_DVB_BUDGET_PATCH=m
CONFIG_DVB_B2C2_FLEXCOP_PCI=m
# CONFIG_DVB_B2C2_FLEXCOP_PCI_DEBUG is not set
CONFIG_DVB_PLUTO2=m
CONFIG_DVB_DM1105=m
CONFIG_DVB_PT1=m
# CONFIG_DVB_PT3 is not set
CONFIG_MANTIS_CORE=m
CONFIG_DVB_MANTIS=m
CONFIG_DVB_HOPPER=m
CONFIG_DVB_NGENE=m
CONFIG_DVB_DDBRIDGE=m
# CONFIG_DVB_SMIPCIE is not set
# CONFIG_DVB_NETUP_UNIDVB is not set
# CONFIG_V4L_PLATFORM_DRIVERS is not set
# CONFIG_V4L_MEM2MEM_DRIVERS is not set
# CONFIG_V4L_TEST_DRIVERS is not set
# CONFIG_DVB_PLATFORM_DRIVERS is not set

#
# Supported MMC/SDIO adapters
#
CONFIG_SMS_SDIO_DRV=m
CONFIG_RADIO_ADAPTERS=y
CONFIG_RADIO_TEA575X=m
# CONFIG_RADIO_SI470X is not set
# CONFIG_RADIO_SI4713 is not set
# CONFIG_USB_MR800 is not set
# CONFIG_USB_DSBR is not set
# CONFIG_RADIO_MAXIRADIO is not set
# CONFIG_RADIO_SHARK is not set
# CONFIG_RADIO_SHARK2 is not set
# CONFIG_USB_KEENE is not set
# CONFIG_USB_RAREMONO is not set
# CONFIG_USB_MA901 is not set
# CONFIG_RADIO_TEA5764 is not set
# CONFIG_RADIO_SAA7706H is not set
# CONFIG_RADIO_TEF6862 is not set
# CONFIG_RADIO_WL1273 is not set

#
# Texas Instruments WL128x FM driver (ST based)
#

#
# Supported FireWire (IEEE 1394) Adapters
#
CONFIG_DVB_FIREDTV=m
CONFIG_DVB_FIREDTV_INPUT=y
CONFIG_MEDIA_COMMON_OPTIONS=y

#
# common driver options
#
CONFIG_VIDEO_CX2341X=m
CONFIG_VIDEO_TVEEPROM=m
CONFIG_CYPRESS_FIRMWARE=m
CONFIG_DVB_B2C2_FLEXCOP=m
CONFIG_VIDEO_SAA7146=m
CONFIG_VIDEO_SAA7146_VV=m
CONFIG_SMS_SIANO_MDTV=m
CONFIG_SMS_SIANO_RC=y
# CONFIG_SMS_SIANO_DEBUGFS is not set

#
# Media ancillary drivers (tuners, sensors, i2c, spi, frontends)
#
CONFIG_MEDIA_SUBDRV_AUTOSELECT=y
CONFIG_MEDIA_ATTACH=y
CONFIG_VIDEO_IR_I2C=m

#
# Audio decoders, processors and mixers
#
CONFIG_VIDEO_TVAUDIO=m
CONFIG_VIDEO_TDA7432=m
CONFIG_VIDEO_MSP3400=m
CONFIG_VIDEO_CS3308=m
CONFIG_VIDEO_CS5345=m
CONFIG_VIDEO_CS53L32A=m
CONFIG_VIDEO_WM8775=m
CONFIG_VIDEO_WM8739=m
CONFIG_VIDEO_VP27SMPX=m

#
# RDS decoders
#
CONFIG_VIDEO_SAA6588=m

#
# Video decoders
#
CONFIG_VIDEO_SAA711X=m

#
# Video and audio decoders
#
CONFIG_VIDEO_SAA717X=m
CONFIG_VIDEO_CX25840=m

#
# Video encoders
#
CONFIG_VIDEO_SAA7127=m

#
# Camera sensor devices
#

#
# Flash devices
#

#
# Video improvement chips
#
CONFIG_VIDEO_UPD64031A=m
CONFIG_VIDEO_UPD64083=m

#
# Audio/Video compression chips
#
CONFIG_VIDEO_SAA6752HS=m

#
# Miscellaneous helper chips
#
CONFIG_VIDEO_M52790=m

#
# Sensors used on soc_camera driver
#
CONFIG_MEDIA_TUNER=m
CONFIG_MEDIA_TUNER_SIMPLE=m
CONFIG_MEDIA_TUNER_TDA8290=m
CONFIG_MEDIA_TUNER_TDA827X=m
CONFIG_MEDIA_TUNER_TDA18271=m
CONFIG_MEDIA_TUNER_TDA9887=m
CONFIG_MEDIA_TUNER_TEA5761=m
CONFIG_MEDIA_TUNER_TEA5767=m
CONFIG_MEDIA_TUNER_MT20XX=m
CONFIG_MEDIA_TUNER_MT2060=m
CONFIG_MEDIA_TUNER_MT2063=m
CONFIG_MEDIA_TUNER_MT2266=m
CONFIG_MEDIA_TUNER_MT2131=m
CONFIG_MEDIA_TUNER_QT1010=m
CONFIG_MEDIA_TUNER_XC2028=m
CONFIG_MEDIA_TUNER_XC5000=m
CONFIG_MEDIA_TUNER_XC4000=m
CONFIG_MEDIA_TUNER_MXL5005S=m
CONFIG_MEDIA_TUNER_MXL5007T=m
CONFIG_MEDIA_TUNER_MC44S803=m
CONFIG_MEDIA_TUNER_MAX2165=m
CONFIG_MEDIA_TUNER_TDA18218=m
CONFIG_MEDIA_TUNER_FC0011=m
CONFIG_MEDIA_TUNER_FC0012=m
CONFIG_MEDIA_TUNER_FC0013=m
CONFIG_MEDIA_TUNER_TDA18212=m
CONFIG_MEDIA_TUNER_E4000=m
CONFIG_MEDIA_TUNER_FC2580=m
CONFIG_MEDIA_TUNER_M88RS6000T=m
CONFIG_MEDIA_TUNER_TUA9001=m
CONFIG_MEDIA_TUNER_SI2157=m
CONFIG_MEDIA_TUNER_IT913X=m
CONFIG_MEDIA_TUNER_R820T=m
CONFIG_MEDIA_TUNER_QM1D1C0042=m

#
# Multistandard (satellite) frontends
#
CONFIG_DVB_STB0899=m
CONFIG_DVB_STB6100=m
CONFIG_DVB_STV090x=m
CONFIG_DVB_STV6110x=m
CONFIG_DVB_M88DS3103=m

#
# Multistandard (cable + terrestrial) frontends
#
CONFIG_DVB_DRXK=m
CONFIG_DVB_TDA18271C2DD=m
CONFIG_DVB_SI2165=m
CONFIG_DVB_MN88472=m
CONFIG_DVB_MN88473=m

#
# DVB-S (satellite) frontends
#
CONFIG_DVB_CX24110=m
CONFIG_DVB_CX24123=m
CONFIG_DVB_MT312=m
CONFIG_DVB_ZL10036=m
CONFIG_DVB_ZL10039=m
CONFIG_DVB_S5H1420=m
CONFIG_DVB_STV0288=m
CONFIG_DVB_STB6000=m
CONFIG_DVB_STV0299=m
CONFIG_DVB_STV6110=m
CONFIG_DVB_STV0900=m
CONFIG_DVB_TDA8083=m
CONFIG_DVB_TDA10086=m
CONFIG_DVB_TDA8261=m
CONFIG_DVB_VES1X93=m
CONFIG_DVB_TUNER_ITD1000=m
CONFIG_DVB_TUNER_CX24113=m
CONFIG_DVB_TDA826X=m
CONFIG_DVB_TUA6100=m
CONFIG_DVB_CX24116=m
CONFIG_DVB_CX24117=m
CONFIG_DVB_CX24120=m
CONFIG_DVB_SI21XX=m
CONFIG_DVB_TS2020=m
CONFIG_DVB_DS3000=m
CONFIG_DVB_MB86A16=m
CONFIG_DVB_TDA10071=m

#
# DVB-T (terrestrial) frontends
#
CONFIG_DVB_SP8870=m
CONFIG_DVB_SP887X=m
CONFIG_DVB_CX22700=m
CONFIG_DVB_CX22702=m
CONFIG_DVB_DRXD=m
CONFIG_DVB_L64781=m
CONFIG_DVB_TDA1004X=m
CONFIG_DVB_NXT6000=m
CONFIG_DVB_MT352=m
CONFIG_DVB_ZL10353=m
CONFIG_DVB_DIB3000MB=m
CONFIG_DVB_DIB3000MC=m
CONFIG_DVB_DIB7000M=m
CONFIG_DVB_DIB7000P=m
CONFIG_DVB_TDA10048=m
CONFIG_DVB_AF9013=m
CONFIG_DVB_EC100=m
CONFIG_DVB_STV0367=m
CONFIG_DVB_CXD2820R=m
CONFIG_DVB_RTL2830=m
CONFIG_DVB_RTL2832=m
CONFIG_DVB_SI2168=m
# CONFIG_DVB_AS102_FE is not set
CONFIG_DVB_GP8PSK_FE=m

#
# DVB-C (cable) frontends
#
CONFIG_DVB_VES1820=m
CONFIG_DVB_TDA10021=m
CONFIG_DVB_TDA10023=m
CONFIG_DVB_STV0297=m

#
# ATSC (North American/Korean Terrestrial/Cable DTV) frontends
#
CONFIG_DVB_NXT200X=m
CONFIG_DVB_OR51211=m
CONFIG_DVB_OR51132=m
CONFIG_DVB_BCM3510=m
CONFIG_DVB_LGDT330X=m
CONFIG_DVB_LGDT3305=m
CONFIG_DVB_LGDT3306A=m
CONFIG_DVB_LG2160=m
CONFIG_DVB_S5H1409=m
CONFIG_DVB_AU8522=m
CONFIG_DVB_AU8522_DTV=m
CONFIG_DVB_AU8522_V4L=m
CONFIG_DVB_S5H1411=m

#
# ISDB-T (terrestrial) frontends
#
CONFIG_DVB_S921=m
CONFIG_DVB_DIB8000=m
CONFIG_DVB_MB86A20S=m

#
# ISDB-S (satellite) & ISDB-T (terrestrial) frontends
#
CONFIG_DVB_TC90522=m

#
# Digital terrestrial only tuners/PLL
#
CONFIG_DVB_PLL=m
CONFIG_DVB_TUNER_DIB0070=m
CONFIG_DVB_TUNER_DIB0090=m

#
# SEC control devices for DVB-S
#
CONFIG_DVB_DRX39XYJ=m
CONFIG_DVB_LNBP21=m
CONFIG_DVB_LNBP22=m
CONFIG_DVB_ISL6405=m
CONFIG_DVB_ISL6421=m
CONFIG_DVB_ISL6423=m
CONFIG_DVB_A8293=m
CONFIG_DVB_LGS8GXX=m
CONFIG_DVB_ATBM8830=m
CONFIG_DVB_TDA665x=m
CONFIG_DVB_IX2505V=m
CONFIG_DVB_M88RS2000=m
CONFIG_DVB_AF9033=m

#
# Tools to develop new frontends
#
# CONFIG_DVB_DUMMY_FE is not set

#
# Graphics support
#
CONFIG_AGP=y
CONFIG_AGP_AMD64=y
CONFIG_AGP_INTEL=y
CONFIG_AGP_SIS=y
CONFIG_AGP_VIA=y
CONFIG_INTEL_GTT=y
CONFIG_VGA_ARB=y
CONFIG_VGA_ARB_MAX_GPUS=64
CONFIG_VGA_SWITCHEROO=y
CONFIG_DRM=m
CONFIG_DRM_MIPI_DSI=y
# CONFIG_DRM_DP_AUX_CHARDEV is not set
# CONFIG_DRM_DEBUG_MM_SELFTEST is not set
CONFIG_DRM_KMS_HELPER=m
CONFIG_DRM_KMS_FB_HELPER=y
CONFIG_DRM_FBDEV_EMULATION=y
CONFIG_DRM_LOAD_EDID_FIRMWARE=y
CONFIG_DRM_TTM=m

#
# I2C encoder or helper chips
#
CONFIG_DRM_I2C_CH7006=m
CONFIG_DRM_I2C_SIL164=m
CONFIG_DRM_I2C_NXP_TDA998X=m
# CONFIG_DRM_RADEON is not set
# CONFIG_DRM_AMDGPU is not set

#
# ACP (Audio CoProcessor) Configuration
#
# CONFIG_DRM_NOUVEAU is not set
CONFIG_DRM_I915=m
# CONFIG_DRM_I915_ALPHA_SUPPORT is not set
CONFIG_DRM_I915_CAPTURE_ERROR=y
CONFIG_DRM_I915_COMPRESS_ERROR=y
CONFIG_DRM_I915_USERPTR=y
# CONFIG_DRM_I915_GVT is not set

#
# drm/i915 Debugging
#
# CONFIG_DRM_I915_WERROR is not set
# CONFIG_DRM_I915_DEBUG is not set
# CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS is not set
# CONFIG_DRM_VGEM is not set
CONFIG_DRM_VMWGFX=m
CONFIG_DRM_VMWGFX_FBCON=y
CONFIG_DRM_GMA500=m
CONFIG_DRM_GMA600=y
CONFIG_DRM_GMA3600=y
CONFIG_DRM_UDL=m
CONFIG_DRM_AST=m
CONFIG_DRM_MGAG200=m
CONFIG_DRM_CIRRUS_QEMU=m
CONFIG_DRM_QXL=m
# CONFIG_DRM_BOCHS is not set
# CONFIG_DRM_VIRTIO_GPU is not set
CONFIG_DRM_PANEL=y

#
# Display Panels
#
CONFIG_DRM_BRIDGE=y

#
# Display Interface Bridges
#
# CONFIG_DRM_ANALOGIX_ANX78XX is not set
# CONFIG_DRM_HISI_HIBMC is not set
# CONFIG_DRM_TINYDRM is not set
# CONFIG_DRM_LEGACY is not set
# CONFIG_DRM_LIB_RANDOM is not set

#
# Frame buffer Devices
#
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
CONFIG_FB_CMDLINE=y
CONFIG_FB_NOTIFY=y
# CONFIG_FB_DDC is not set
CONFIG_FB_BOOT_VESA_SUPPORT=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
CONFIG_FB_SYS_FILLRECT=m
CONFIG_FB_SYS_COPYAREA=m
CONFIG_FB_SYS_IMAGEBLIT=m
# CONFIG_FB_PROVIDE_GET_FB_UNMAPPED_AREA is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
CONFIG_FB_SYS_FOPS=m
CONFIG_FB_DEFERRED_IO=y
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
# CONFIG_FB_MODE_HELPERS is not set
CONFIG_FB_TILEBLITTING=y

#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_UVESA is not set
CONFIG_FB_VESA=y
CONFIG_FB_EFI=y
# CONFIG_FB_N411 is not set
# CONFIG_FB_HGA is not set
# CONFIG_FB_OPENCORES is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I740 is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_INTEL is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_VIA is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CARMINE is not set
# CONFIG_FB_SM501 is not set
# CONFIG_FB_SMSCUFX is not set
# CONFIG_FB_UDL is not set
# CONFIG_FB_IBM_GXT4500 is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_XEN_FBDEV_FRONTEND is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_MB862XX is not set
# CONFIG_FB_BROADSHEET is not set
# CONFIG_FB_AUO_K190X is not set
CONFIG_FB_HYPERV=m
# CONFIG_FB_SIMPLE is not set
# CONFIG_FB_SM712 is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=m
# CONFIG_LCD_L4F00242T03 is not set
# CONFIG_LCD_LMS283GF05 is not set
# CONFIG_LCD_LTV350QV is not set
# CONFIG_LCD_ILI922X is not set
# CONFIG_LCD_ILI9320 is not set
# CONFIG_LCD_TDO24M is not set
# CONFIG_LCD_VGG2432A4 is not set
CONFIG_LCD_PLATFORM=m
# CONFIG_LCD_S6E63M0 is not set
# CONFIG_LCD_LD9040 is not set
# CONFIG_LCD_AMS369FG06 is not set
# CONFIG_LCD_LMS501KF03 is not set
# CONFIG_LCD_HX8357 is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_GENERIC is not set
# CONFIG_BACKLIGHT_PWM is not set
CONFIG_BACKLIGHT_APPLE=m
# CONFIG_BACKLIGHT_PM8941_WLED is not set
# CONFIG_BACKLIGHT_SAHARA is not set
# CONFIG_BACKLIGHT_ADP8860 is not set
# CONFIG_BACKLIGHT_ADP8870 is not set
# CONFIG_BACKLIGHT_LM3630A is not set
# CONFIG_BACKLIGHT_LM3639 is not set
# CONFIG_BACKLIGHT_LP855X is not set
# CONFIG_BACKLIGHT_GPIO is not set
# CONFIG_BACKLIGHT_LV5207LP is not set
# CONFIG_BACKLIGHT_BD6107 is not set
# CONFIG_VGASTATE is not set
CONFIG_HDMI=y

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
# CONFIG_VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
CONFIG_LOGO_LINUX_CLUT224=y
CONFIG_SOUND=m
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=m
CONFIG_SND_TIMER=m
CONFIG_SND_PCM=m
CONFIG_SND_HWDEP=m
CONFIG_SND_RAWMIDI=m
CONFIG_SND_JACK=y
CONFIG_SND_JACK_INPUT_DEV=y
CONFIG_SND_SEQUENCER=m
CONFIG_SND_SEQ_DUMMY=m
CONFIG_SND_OSSEMUL=y
# CONFIG_SND_MIXER_OSS is not set
# CONFIG_SND_PCM_OSS is not set
CONFIG_SND_PCM_TIMER=y
CONFIG_SND_SEQUENCER_OSS=y
CONFIG_SND_HRTIMER=m
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
CONFIG_SND_DYNAMIC_MINORS=y
CONFIG_SND_MAX_CARDS=32
# CONFIG_SND_SUPPORT_OLD_API is not set
CONFIG_SND_PROC_FS=y
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
CONFIG_SND_VMASTER=y
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_RAWMIDI_SEQ=m
CONFIG_SND_OPL3_LIB_SEQ=m
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
CONFIG_SND_EMU10K1_SEQ=m
CONFIG_SND_MPU401_UART=m
CONFIG_SND_OPL3_LIB=m
CONFIG_SND_VX_LIB=m
CONFIG_SND_AC97_CODEC=m
CONFIG_SND_DRIVERS=y
CONFIG_SND_PCSP=m
CONFIG_SND_DUMMY=m
CONFIG_SND_ALOOP=m
CONFIG_SND_VIRMIDI=m
CONFIG_SND_MTPAV=m
# CONFIG_SND_MTS64 is not set
# CONFIG_SND_SERIAL_U16550 is not set
CONFIG_SND_MPU401=m
# CONFIG_SND_PORTMAN2X4 is not set
CONFIG_SND_AC97_POWER_SAVE=y
CONFIG_SND_AC97_POWER_SAVE_DEFAULT=5
CONFIG_SND_PCI=y
CONFIG_SND_AD1889=m
# CONFIG_SND_ALS300 is not set
# CONFIG_SND_ALS4000 is not set
CONFIG_SND_ALI5451=m
CONFIG_SND_ASIHPI=m
CONFIG_SND_ATIIXP=m
CONFIG_SND_ATIIXP_MODEM=m
CONFIG_SND_AU8810=m
CONFIG_SND_AU8820=m
CONFIG_SND_AU8830=m
# CONFIG_SND_AW2 is not set
# CONFIG_SND_AZT3328 is not set
CONFIG_SND_BT87X=m
# CONFIG_SND_BT87X_OVERCLOCK is not set
CONFIG_SND_CA0106=m
CONFIG_SND_CMIPCI=m
CONFIG_SND_OXYGEN_LIB=m
CONFIG_SND_OXYGEN=m
# CONFIG_SND_CS4281 is not set
CONFIG_SND_CS46XX=m
CONFIG_SND_CS46XX_NEW_DSP=y
CONFIG_SND_CTXFI=m
CONFIG_SND_DARLA20=m
CONFIG_SND_GINA20=m
CONFIG_SND_LAYLA20=m
CONFIG_SND_DARLA24=m
CONFIG_SND_GINA24=m
CONFIG_SND_LAYLA24=m
CONFIG_SND_MONA=m
CONFIG_SND_MIA=m
CONFIG_SND_ECHO3G=m
CONFIG_SND_INDIGO=m
CONFIG_SND_INDIGOIO=m
CONFIG_SND_INDIGODJ=m
CONFIG_SND_INDIGOIOX=m
CONFIG_SND_INDIGODJX=m
CONFIG_SND_EMU10K1=m
CONFIG_SND_EMU10K1X=m
CONFIG_SND_ENS1370=m
CONFIG_SND_ENS1371=m
# CONFIG_SND_ES1938 is not set
CONFIG_SND_ES1968=m
CONFIG_SND_ES1968_INPUT=y
CONFIG_SND_ES1968_RADIO=y
# CONFIG_SND_FM801 is not set
CONFIG_SND_HDSP=m
CONFIG_SND_HDSPM=m
CONFIG_SND_ICE1712=m
CONFIG_SND_ICE1724=m
CONFIG_SND_INTEL8X0=m
CONFIG_SND_INTEL8X0M=m
CONFIG_SND_KORG1212=m
CONFIG_SND_LOLA=m
CONFIG_SND_LX6464ES=m
CONFIG_SND_MAESTRO3=m
CONFIG_SND_MAESTRO3_INPUT=y
CONFIG_SND_MIXART=m
# CONFIG_SND_NM256 is not set
CONFIG_SND_PCXHR=m
# CONFIG_SND_RIPTIDE is not set
CONFIG_SND_RME32=m
CONFIG_SND_RME96=m
CONFIG_SND_RME9652=m
# CONFIG_SND_SONICVIBES is not set
CONFIG_SND_TRIDENT=m
CONFIG_SND_VIA82XX=m
CONFIG_SND_VIA82XX_MODEM=m
CONFIG_SND_VIRTUOSO=m
CONFIG_SND_VX222=m
# CONFIG_SND_YMFPCI is not set

#
# HD-Audio
#
CONFIG_SND_HDA=m
CONFIG_SND_HDA_INTEL=m
CONFIG_SND_HDA_HWDEP=y
# CONFIG_SND_HDA_RECONFIG is not set
CONFIG_SND_HDA_INPUT_BEEP=y
CONFIG_SND_HDA_INPUT_BEEP_MODE=0
# CONFIG_SND_HDA_PATCH_LOADER is not set
CONFIG_SND_HDA_CODEC_REALTEK=m
CONFIG_SND_HDA_CODEC_ANALOG=m
CONFIG_SND_HDA_CODEC_SIGMATEL=m
CONFIG_SND_HDA_CODEC_VIA=m
CONFIG_SND_HDA_CODEC_HDMI=m
CONFIG_SND_HDA_CODEC_CIRRUS=m
CONFIG_SND_HDA_CODEC_CONEXANT=m
CONFIG_SND_HDA_CODEC_CA0110=m
CONFIG_SND_HDA_CODEC_CA0132=m
CONFIG_SND_HDA_CODEC_CA0132_DSP=y
CONFIG_SND_HDA_CODEC_CMEDIA=m
CONFIG_SND_HDA_CODEC_SI3054=m
CONFIG_SND_HDA_GENERIC=m
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
CONFIG_SND_HDA_CORE=m
CONFIG_SND_HDA_DSP_LOADER=y
CONFIG_SND_HDA_I915=y
CONFIG_SND_HDA_PREALLOC_SIZE=512
CONFIG_SND_SPI=y
CONFIG_SND_USB=y
CONFIG_SND_USB_AUDIO=m
CONFIG_SND_USB_UA101=m
CONFIG_SND_USB_USX2Y=m
CONFIG_SND_USB_CAIAQ=m
CONFIG_SND_USB_CAIAQ_INPUT=y
CONFIG_SND_USB_US122L=m
CONFIG_SND_USB_6FIRE=m
# CONFIG_SND_USB_HIFACE is not set
# CONFIG_SND_BCD2000 is not set
# CONFIG_SND_USB_POD is not set
# CONFIG_SND_USB_PODHD is not set
# CONFIG_SND_USB_TONEPORT is not set
# CONFIG_SND_USB_VARIAX is not set
CONFIG_SND_FIREWIRE=y
CONFIG_SND_FIREWIRE_LIB=m
# CONFIG_SND_DICE is not set
# CONFIG_SND_OXFW is not set
CONFIG_SND_ISIGHT=m
# CONFIG_SND_FIREWORKS is not set
# CONFIG_SND_BEBOB is not set
# CONFIG_SND_FIREWIRE_DIGI00X is not set
# CONFIG_SND_FIREWIRE_TASCAM is not set
# CONFIG_SND_SOC is not set
CONFIG_SND_X86=y
# CONFIG_HDMI_LPE_AUDIO is not set
# CONFIG_SOUND_PRIME is not set
CONFIG_AC97_BUS=m

#
# HID support
#
CONFIG_HID=y
CONFIG_HID_BATTERY_STRENGTH=y
CONFIG_HIDRAW=y
CONFIG_UHID=m
CONFIG_HID_GENERIC=y

#
# Special HID drivers
#
CONFIG_HID_A4TECH=y
CONFIG_HID_ACRUX=m
# CONFIG_HID_ACRUX_FF is not set
CONFIG_HID_APPLE=y
CONFIG_HID_APPLEIR=m
# CONFIG_HID_ASUS is not set
CONFIG_HID_AUREAL=m
CONFIG_HID_BELKIN=y
# CONFIG_HID_BETOP_FF is not set
CONFIG_HID_CHERRY=y
CONFIG_HID_CHICONY=y
# CONFIG_HID_CORSAIR is not set
CONFIG_HID_PRODIKEYS=m
# CONFIG_HID_CMEDIA is not set
# CONFIG_HID_CP2112 is not set
CONFIG_HID_CYPRESS=y
CONFIG_HID_DRAGONRISE=m
# CONFIG_DRAGONRISE_FF is not set
# CONFIG_HID_EMS_FF is not set
CONFIG_HID_ELECOM=m
# CONFIG_HID_ELO is not set
CONFIG_HID_EZKEY=y
# CONFIG_HID_GEMBIRD is not set
# CONFIG_HID_GFRM is not set
CONFIG_HID_HOLTEK=m
# CONFIG_HOLTEK_FF is not set
# CONFIG_HID_GT683R is not set
CONFIG_HID_KEYTOUCH=m
CONFIG_HID_KYE=m
CONFIG_HID_UCLOGIC=m
CONFIG_HID_WALTOP=m
CONFIG_HID_GYRATION=m
CONFIG_HID_ICADE=m
CONFIG_HID_TWINHAN=m
CONFIG_HID_KENSINGTON=y
CONFIG_HID_LCPOWER=m
CONFIG_HID_LED=m
# CONFIG_HID_LENOVO is not set
CONFIG_HID_LOGITECH=y
CONFIG_HID_LOGITECH_DJ=m
CONFIG_HID_LOGITECH_HIDPP=m
# CONFIG_LOGITECH_FF is not set
# CONFIG_LOGIRUMBLEPAD2_FF is not set
# CONFIG_LOGIG940_FF is not set
# CONFIG_LOGIWHEELS_FF is not set
CONFIG_HID_MAGICMOUSE=y
# CONFIG_HID_MAYFLASH is not set
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
CONFIG_HID_MULTITOUCH=m
CONFIG_HID_NTRIG=y
CONFIG_HID_ORTEK=m
CONFIG_HID_PANTHERLORD=m
# CONFIG_PANTHERLORD_FF is not set
# CONFIG_HID_PENMOUNT is not set
CONFIG_HID_PETALYNX=m
CONFIG_HID_PICOLCD=m
CONFIG_HID_PICOLCD_FB=y
CONFIG_HID_PICOLCD_BACKLIGHT=y
CONFIG_HID_PICOLCD_LCD=y
CONFIG_HID_PICOLCD_LEDS=y
CONFIG_HID_PICOLCD_CIR=y
CONFIG_HID_PLANTRONICS=y
CONFIG_HID_PRIMAX=m
CONFIG_HID_ROCCAT=m
CONFIG_HID_SAITEK=m
CONFIG_HID_SAMSUNG=m
CONFIG_HID_SONY=m
# CONFIG_SONY_FF is not set
CONFIG_HID_SPEEDLINK=m
CONFIG_HID_STEELSERIES=m
CONFIG_HID_SUNPLUS=m
# CONFIG_HID_RMI is not set
CONFIG_HID_GREENASIA=m
# CONFIG_GREENASIA_FF is not set
CONFIG_HID_HYPERV_MOUSE=m
CONFIG_HID_SMARTJOYPLUS=m
# CONFIG_SMARTJOYPLUS_FF is not set
CONFIG_HID_TIVO=m
CONFIG_HID_TOPSEED=m
CONFIG_HID_THINGM=m
CONFIG_HID_THRUSTMASTER=m
# CONFIG_THRUSTMASTER_FF is not set
# CONFIG_HID_UDRAW_PS3 is not set
CONFIG_HID_WACOM=m
CONFIG_HID_WIIMOTE=m
# CONFIG_HID_XINMO is not set
CONFIG_HID_ZEROPLUS=m
# CONFIG_ZEROPLUS_FF is not set
CONFIG_HID_ZYDACRON=m
# CONFIG_HID_SENSOR_HUB is not set
# CONFIG_HID_ALPS is not set

#
# USB HID support
#
CONFIG_USB_HID=y
CONFIG_HID_PID=y
CONFIG_USB_HIDDEV=y

#
# I2C HID support
#
CONFIG_I2C_HID=m

#
# Intel ISH HID support
#
# CONFIG_INTEL_ISH_HID is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

#
# Miscellaneous USB options
#
CONFIG_USB_DEFAULT_PERSIST=y
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_OTG_WHITELIST is not set
# CONFIG_USB_OTG_BLACKLIST_HUB is not set
# CONFIG_USB_LEDS_TRIGGER_USBPORT is not set
CONFIG_USB_MON=y
CONFIG_USB_WUSB=m
CONFIG_USB_WUSB_CBAF=m
# CONFIG_USB_WUSB_CBAF_DEBUG is not set

#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_XHCI_PCI=y
CONFIG_USB_XHCI_PLATFORM=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_EHCI_TT_NEWSCHED=y
CONFIG_USB_EHCI_PCI=y
# CONFIG_USB_EHCI_HCD_PLATFORM is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_ISP1362_HCD is not set
# CONFIG_USB_FOTG210_HCD is not set
# CONFIG_USB_MAX3421_HCD is not set
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PCI=y
# CONFIG_USB_OHCI_HCD_PLATFORM is not set
CONFIG_USB_UHCI_HCD=y
# CONFIG_USB_U132_HCD is not set
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_WHCI_HCD is not set
CONFIG_USB_HWA_HCD=m
# CONFIG_USB_HCD_BCMA is not set
# CONFIG_USB_HCD_SSB is not set
# CONFIG_USB_HCD_TEST_MODE is not set

#
# USB Device Class drivers
#
CONFIG_USB_ACM=m
CONFIG_USB_PRINTER=m
CONFIG_USB_WDM=m
CONFIG_USB_TMC=m

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#

#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=m
# CONFIG_USB_STORAGE_DEBUG is not set
CONFIG_USB_STORAGE_REALTEK=m
CONFIG_REALTEK_AUTOPM=y
CONFIG_USB_STORAGE_DATAFAB=m
CONFIG_USB_STORAGE_FREECOM=m
CONFIG_USB_STORAGE_ISD200=m
CONFIG_USB_STORAGE_USBAT=m
CONFIG_USB_STORAGE_SDDR09=m
CONFIG_USB_STORAGE_SDDR55=m
CONFIG_USB_STORAGE_JUMPSHOT=m
CONFIG_USB_STORAGE_ALAUDA=m
CONFIG_USB_STORAGE_ONETOUCH=m
CONFIG_USB_STORAGE_KARMA=m
CONFIG_USB_STORAGE_CYPRESS_ATACB=m
CONFIG_USB_STORAGE_ENE_UB6250=m
CONFIG_USB_UAS=m

#
# USB Imaging devices
#
CONFIG_USB_MDC800=m
CONFIG_USB_MICROTEK=m
# CONFIG_USBIP_CORE is not set
# CONFIG_USB_MUSB_HDRC is not set
CONFIG_USB_DWC3=y
# CONFIG_USB_DWC3_HOST is not set
CONFIG_USB_DWC3_GADGET=y
# CONFIG_USB_DWC3_DUAL_ROLE is not set

#
# Platform Glue Driver Support
#
CONFIG_USB_DWC3_PCI=y
# CONFIG_USB_DWC2 is not set
# CONFIG_USB_CHIPIDEA is not set
# CONFIG_USB_ISP1760 is not set

#
# USB port drivers
#
CONFIG_USB_USS720=m
CONFIG_USB_SERIAL=y
CONFIG_USB_SERIAL_CONSOLE=y
CONFIG_USB_SERIAL_GENERIC=y
# CONFIG_USB_SERIAL_SIMPLE is not set
CONFIG_USB_SERIAL_AIRCABLE=m
CONFIG_USB_SERIAL_ARK3116=m
CONFIG_USB_SERIAL_BELKIN=m
CONFIG_USB_SERIAL_CH341=m
CONFIG_USB_SERIAL_WHITEHEAT=m
CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
CONFIG_USB_SERIAL_CP210X=m
CONFIG_USB_SERIAL_CYPRESS_M8=m
CONFIG_USB_SERIAL_EMPEG=m
CONFIG_USB_SERIAL_FTDI_SIO=m
CONFIG_USB_SERIAL_VISOR=m
CONFIG_USB_SERIAL_IPAQ=m
CONFIG_USB_SERIAL_IR=m
CONFIG_USB_SERIAL_EDGEPORT=m
CONFIG_USB_SERIAL_EDGEPORT_TI=m
# CONFIG_USB_SERIAL_F81232 is not set
# CONFIG_USB_SERIAL_F8153X is not set
CONFIG_USB_SERIAL_GARMIN=m
CONFIG_USB_SERIAL_IPW=m
CONFIG_USB_SERIAL_IUU=m
CONFIG_USB_SERIAL_KEYSPAN_PDA=m
CONFIG_USB_SERIAL_KEYSPAN=m
CONFIG_USB_SERIAL_KLSI=m
CONFIG_USB_SERIAL_KOBIL_SCT=m
CONFIG_USB_SERIAL_MCT_U232=m
# CONFIG_USB_SERIAL_METRO is not set
CONFIG_USB_SERIAL_MOS7720=m
CONFIG_USB_SERIAL_MOS7715_PARPORT=y
CONFIG_USB_SERIAL_MOS7840=m
# CONFIG_USB_SERIAL_MXUPORT is not set
CONFIG_USB_SERIAL_NAVMAN=m
CONFIG_USB_SERIAL_PL2303=m
CONFIG_USB_SERIAL_OTI6858=m
CONFIG_USB_SERIAL_QCAUX=m
CONFIG_USB_SERIAL_QUALCOMM=m
CONFIG_USB_SERIAL_SPCP8X5=m
CONFIG_USB_SERIAL_SAFE=m
CONFIG_USB_SERIAL_SAFE_PADDED=y
CONFIG_USB_SERIAL_SIERRAWIRELESS=m
CONFIG_USB_SERIAL_SYMBOL=m
# CONFIG_USB_SERIAL_TI is not set
CONFIG_USB_SERIAL_CYBERJACK=m
CONFIG_USB_SERIAL_XIRCOM=m
CONFIG_USB_SERIAL_WWAN=m
CONFIG_USB_SERIAL_OPTION=m
CONFIG_USB_SERIAL_OMNINET=m
CONFIG_USB_SERIAL_OPTICON=m
CONFIG_USB_SERIAL_XSENS_MT=m
# CONFIG_USB_SERIAL_WISHBONE is not set
CONFIG_USB_SERIAL_SSU100=m
CONFIG_USB_SERIAL_QT2=m
# CONFIG_USB_SERIAL_UPD78F0730 is not set
CONFIG_USB_SERIAL_DEBUG=m

#
# USB Miscellaneous drivers
#
CONFIG_USB_EMI62=m
CONFIG_USB_EMI26=m
CONFIG_USB_ADUTUX=m
CONFIG_USB_SEVSEG=m
# CONFIG_USB_RIO500 is not set
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
CONFIG_USB_IDMOUSE=m
CONFIG_USB_FTDI_ELAN=m
CONFIG_USB_APPLEDISPLAY=m
CONFIG_USB_SISUSBVGA=m
CONFIG_USB_SISUSBVGA_CON=y
CONFIG_USB_LD=m
# CONFIG_USB_TRANCEVIBRATOR is not set
CONFIG_USB_IOWARRIOR=m
# CONFIG_USB_TEST is not set
# CONFIG_USB_EHSET_TEST_FIXTURE is not set
CONFIG_USB_ISIGHTFW=m
# CONFIG_USB_YUREX is not set
CONFIG_USB_EZUSB_FX2=m
# CONFIG_USB_HUB_USB251XB is not set
CONFIG_USB_HSIC_USB3503=m
# CONFIG_USB_HSIC_USB4604 is not set
# CONFIG_USB_LINK_LAYER_TEST is not set
# CONFIG_USB_CHAOSKEY is not set
# CONFIG_UCSI is not set
CONFIG_USB_ATM=m
CONFIG_USB_SPEEDTOUCH=m
CONFIG_USB_CXACRU=m
CONFIG_USB_UEAGLEATM=m
CONFIG_USB_XUSBATM=m

#
# USB Physical Layer drivers
#
CONFIG_USB_PHY=y
CONFIG_NOP_USB_XCEIV=y
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_USB_ISP1301 is not set
CONFIG_USB_GADGET=y
# CONFIG_USB_GADGET_DEBUG is not set
# CONFIG_USB_GADGET_DEBUG_FILES is not set
# CONFIG_USB_GADGET_DEBUG_FS is not set
CONFIG_USB_GADGET_VBUS_DRAW=2
CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2

#
# USB Peripheral Controller
#
# CONFIG_USB_FOTG210_UDC is not set
# CONFIG_USB_GR_UDC is not set
# CONFIG_USB_R8A66597 is not set
# CONFIG_USB_PXA27X is not set
# CONFIG_USB_MV_UDC is not set
# CONFIG_USB_MV_U3D is not set
# CONFIG_USB_M66592 is not set
# CONFIG_USB_BDC_UDC is not set
# CONFIG_USB_AMD5536UDC is not set
# CONFIG_USB_NET2272 is not set
# CONFIG_USB_NET2280 is not set
# CONFIG_USB_GOKU is not set
# CONFIG_USB_EG20T is not set
# CONFIG_USB_DUMMY_HCD is not set
CONFIG_USB_LIBCOMPOSITE=m
CONFIG_USB_F_MASS_STORAGE=m
# CONFIG_USB_CONFIGFS is not set
# CONFIG_USB_ZERO is not set
# CONFIG_USB_AUDIO is not set
# CONFIG_USB_ETH is not set
# CONFIG_USB_G_NCM is not set
# CONFIG_USB_GADGETFS is not set
# CONFIG_USB_FUNCTIONFS is not set
CONFIG_USB_MASS_STORAGE=m
# CONFIG_USB_GADGET_TARGET is not set
# CONFIG_USB_G_SERIAL is not set
# CONFIG_USB_MIDI_GADGET is not set
# CONFIG_USB_G_PRINTER is not set
# CONFIG_USB_CDC_COMPOSITE is not set
# CONFIG_USB_G_ACM_MS is not set
# CONFIG_USB_G_MULTI is not set
# CONFIG_USB_G_HID is not set
# CONFIG_USB_G_DBGP is not set
# CONFIG_USB_G_WEBCAM is not set
# CONFIG_USB_LED_TRIG is not set
# CONFIG_USB_ULPI_BUS is not set
CONFIG_UWB=m
CONFIG_UWB_HWA=m
CONFIG_UWB_WHCI=m
CONFIG_UWB_I1480U=m
CONFIG_MMC=m
# CONFIG_MMC_DEBUG is not set
CONFIG_MMC_BLOCK=m
CONFIG_MMC_BLOCK_MINORS=8
CONFIG_MMC_BLOCK_BOUNCE=y
CONFIG_SDIO_UART=m
# CONFIG_MMC_TEST is not set

#
# MMC/SD/SDIO Host Controller Drivers
#
CONFIG_MMC_SDHCI=m
CONFIG_MMC_SDHCI_PCI=m
CONFIG_MMC_RICOH_MMC=y
CONFIG_MMC_SDHCI_ACPI=m
CONFIG_MMC_SDHCI_PLTFM=m
# CONFIG_MMC_WBSD is not set
CONFIG_MMC_TIFM_SD=m
# CONFIG_MMC_SPI is not set
CONFIG_MMC_CB710=m
CONFIG_MMC_VIA_SDMMC=m
CONFIG_MMC_VUB300=m
CONFIG_MMC_USHC=m
# CONFIG_MMC_USDHI6ROL0 is not set
CONFIG_MMC_REALTEK_PCI=m
# CONFIG_MMC_TOSHIBA_PCI is not set
# CONFIG_MMC_MTK is not set
CONFIG_MEMSTICK=m
# CONFIG_MEMSTICK_DEBUG is not set

#
# MemoryStick drivers
#
# CONFIG_MEMSTICK_UNSAFE_RESUME is not set
CONFIG_MSPRO_BLOCK=m
# CONFIG_MS_BLOCK is not set

#
# MemoryStick Host Controller Drivers
#
CONFIG_MEMSTICK_TIFM_MS=m
CONFIG_MEMSTICK_JMICRON_38X=m
CONFIG_MEMSTICK_R592=m
CONFIG_MEMSTICK_REALTEK_PCI=m
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
# CONFIG_LEDS_CLASS_FLASH is not set
# CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set

#
# LED drivers
#
CONFIG_LEDS_LM3530=m
# CONFIG_LEDS_LM3642 is not set
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_GPIO is not set
CONFIG_LEDS_LP3944=m
# CONFIG_LEDS_LP3952 is not set
CONFIG_LEDS_LP55XX_COMMON=m
CONFIG_LEDS_LP5521=m
CONFIG_LEDS_LP5523=m
CONFIG_LEDS_LP5562=m
# CONFIG_LEDS_LP8501 is not set
# CONFIG_LEDS_LP8860 is not set
CONFIG_LEDS_CLEVO_MAIL=m
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_PCA963X is not set
# CONFIG_LEDS_DAC124S085 is not set
# CONFIG_LEDS_PWM is not set
# CONFIG_LEDS_BD2802 is not set
CONFIG_LEDS_INTEL_SS4200=m
# CONFIG_LEDS_LT3593 is not set
# CONFIG_LEDS_TCA6507 is not set
# CONFIG_LEDS_TLC591XX is not set
# CONFIG_LEDS_LM355x is not set

#
# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
#
CONFIG_LEDS_BLINKM=m
# CONFIG_LEDS_MLXCPLD is not set
# CONFIG_LEDS_USER is not set
# CONFIG_LEDS_NIC78BX is not set

#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=m
CONFIG_LEDS_TRIGGER_ONESHOT=m
# CONFIG_LEDS_TRIGGER_DISK is not set
# CONFIG_LEDS_TRIGGER_MTD is not set
CONFIG_LEDS_TRIGGER_HEARTBEAT=m
CONFIG_LEDS_TRIGGER_BACKLIGHT=m
# CONFIG_LEDS_TRIGGER_CPU is not set
# CONFIG_LEDS_TRIGGER_GPIO is not set
CONFIG_LEDS_TRIGGER_DEFAULT_ON=m

#
# iptables trigger is under Netfilter config (LED target)
#
CONFIG_LEDS_TRIGGER_TRANSIENT=m
CONFIG_LEDS_TRIGGER_CAMERA=m
# CONFIG_LEDS_TRIGGER_PANIC is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_EDAC=y
CONFIG_EDAC_LEGACY_SYSFS=y
# CONFIG_EDAC_DEBUG is not set
CONFIG_EDAC_DECODE_MCE=m
CONFIG_EDAC_MM_EDAC=m
CONFIG_EDAC_AMD64=m
# CONFIG_EDAC_AMD64_ERROR_INJECTION is not set
CONFIG_EDAC_E752X=m
CONFIG_EDAC_I82975X=m
CONFIG_EDAC_I3000=m
CONFIG_EDAC_I3200=m
# CONFIG_EDAC_IE31200 is not set
CONFIG_EDAC_X38=m
CONFIG_EDAC_I5400=m
CONFIG_EDAC_I7CORE=m
CONFIG_EDAC_I5000=m
CONFIG_EDAC_I5100=m
CONFIG_EDAC_I7300=m
CONFIG_EDAC_SBRIDGE=m
# CONFIG_EDAC_SKX is not set
# CONFIG_EDAC_PND2 is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_MC146818_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
# CONFIG_RTC_SYSTOHC is not set
# CONFIG_RTC_DEBUG is not set

#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set

#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_ABB5ZES3 is not set
# CONFIG_RTC_DRV_ABX80X is not set
CONFIG_RTC_DRV_DS1307=m
CONFIG_RTC_DRV_DS1307_HWMON=y
# CONFIG_RTC_DRV_DS1307_CENTURY is not set
CONFIG_RTC_DRV_DS1374=m
# CONFIG_RTC_DRV_DS1374_WDT is not set
CONFIG_RTC_DRV_DS1672=m
CONFIG_RTC_DRV_MAX6900=m
CONFIG_RTC_DRV_RS5C372=m
CONFIG_RTC_DRV_ISL1208=m
CONFIG_RTC_DRV_ISL12022=m
CONFIG_RTC_DRV_X1205=m
CONFIG_RTC_DRV_PCF8523=m
# CONFIG_RTC_DRV_PCF85063 is not set
CONFIG_RTC_DRV_PCF8563=m
CONFIG_RTC_DRV_PCF8583=m
CONFIG_RTC_DRV_M41T80=m
CONFIG_RTC_DRV_M41T80_WDT=y
CONFIG_RTC_DRV_BQ32K=m
# CONFIG_RTC_DRV_S35390A is not set
CONFIG_RTC_DRV_FM3130=m
# CONFIG_RTC_DRV_RX8010 is not set
CONFIG_RTC_DRV_RX8581=m
CONFIG_RTC_DRV_RX8025=m
CONFIG_RTC_DRV_EM3027=m
# CONFIG_RTC_DRV_RV8803 is not set

#
# SPI RTC drivers
#
# CONFIG_RTC_DRV_M41T93 is not set
# CONFIG_RTC_DRV_M41T94 is not set
# CONFIG_RTC_DRV_DS1302 is not set
# CONFIG_RTC_DRV_DS1305 is not set
# CONFIG_RTC_DRV_DS1343 is not set
# CONFIG_RTC_DRV_DS1347 is not set
# CONFIG_RTC_DRV_DS1390 is not set
# CONFIG_RTC_DRV_MAX6916 is not set
# CONFIG_RTC_DRV_R9701 is not set
# CONFIG_RTC_DRV_RX4581 is not set
# CONFIG_RTC_DRV_RX6110 is not set
# CONFIG_RTC_DRV_RS5C348 is not set
# CONFIG_RTC_DRV_MAX6902 is not set
# CONFIG_RTC_DRV_PCF2123 is not set
# CONFIG_RTC_DRV_MCP795 is not set
CONFIG_RTC_I2C_AND_SPI=y

#
# SPI and I2C RTC drivers
#
CONFIG_RTC_DRV_DS3232=m
# CONFIG_RTC_DRV_PCF2127 is not set
CONFIG_RTC_DRV_RV3029C2=m
CONFIG_RTC_DRV_RV3029_HWMON=y

#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
CONFIG_RTC_DRV_DS1286=m
CONFIG_RTC_DRV_DS1511=m
CONFIG_RTC_DRV_DS1553=m
# CONFIG_RTC_DRV_DS1685_FAMILY is not set
CONFIG_RTC_DRV_DS1742=m
CONFIG_RTC_DRV_DS2404=m
CONFIG_RTC_DRV_STK17TA8=m
# CONFIG_RTC_DRV_M48T86 is not set
CONFIG_RTC_DRV_M48T35=m
CONFIG_RTC_DRV_M48T59=m
CONFIG_RTC_DRV_MSM6242=m
CONFIG_RTC_DRV_BQ4802=m
CONFIG_RTC_DRV_RP5C01=m
CONFIG_RTC_DRV_V3020=m

#
# on-CPU RTC drivers
#

#
# HID Sensor RTC drivers
#
# CONFIG_RTC_DRV_HID_SENSOR_TIME is not set
CONFIG_DMADEVICES=y
# CONFIG_DMADEVICES_DEBUG is not set

#
# DMA Devices
#
CONFIG_DMA_ENGINE=y
CONFIG_DMA_VIRTUAL_CHANNELS=y
CONFIG_DMA_ACPI=y
# CONFIG_INTEL_IDMA64 is not set
# CONFIG_INTEL_IOATDMA is not set
# CONFIG_QCOM_HIDMA_MGMT is not set
# CONFIG_QCOM_HIDMA is not set
CONFIG_DW_DMAC_CORE=y
CONFIG_DW_DMAC=m
CONFIG_DW_DMAC_PCI=y
CONFIG_HSU_DMA=y

#
# DMA Clients
#
CONFIG_ASYNC_TX_DMA=y
CONFIG_DMATEST=m

#
# DMABUF options
#
CONFIG_SYNC_FILE=y
CONFIG_SW_SYNC=y
CONFIG_AUXDISPLAY=y
CONFIG_KS0108=m
CONFIG_KS0108_PORT=0x378
CONFIG_KS0108_DELAY=2
CONFIG_CFAG12864B=m
CONFIG_CFAG12864B_RATE=20
# CONFIG_IMG_ASCII_LCD is not set
CONFIG_UIO=m
CONFIG_UIO_CIF=m
CONFIG_UIO_PDRV_GENIRQ=m
# CONFIG_UIO_DMEM_GENIRQ is not set
CONFIG_UIO_AEC=m
CONFIG_UIO_SERCOS3=m
CONFIG_UIO_PCI_GENERIC=m
# CONFIG_UIO_NETX is not set
# CONFIG_UIO_PRUSS is not set
# CONFIG_UIO_MF624 is not set
# CONFIG_UIO_HV_GENERIC is not set
CONFIG_VFIO_IOMMU_TYPE1=m
CONFIG_VFIO_VIRQFD=m
CONFIG_VFIO=m
# CONFIG_VFIO_NOIOMMU is not set
CONFIG_VFIO_PCI=m
# CONFIG_VFIO_PCI_VGA is not set
CONFIG_VFIO_PCI_MMAP=y
CONFIG_VFIO_PCI_INTX=y
CONFIG_VFIO_PCI_IGD=y
# CONFIG_VFIO_MDEV is not set
CONFIG_IRQ_BYPASS_MANAGER=m
# CONFIG_VIRT_DRIVERS is not set
CONFIG_VIRTIO=y

#
# Virtio drivers
#
CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_PCI_LEGACY=y
CONFIG_VIRTIO_BALLOON=y
# CONFIG_VIRTIO_INPUT is not set
# CONFIG_VIRTIO_MMIO is not set

#
# Microsoft Hyper-V guest support
#
CONFIG_HYPERV=m
CONFIG_HYPERV_UTILS=m
CONFIG_HYPERV_BALLOON=m

#
# Xen driver support
#
CONFIG_XEN_BALLOON=y
# CONFIG_XEN_SELFBALLOONING is not set
# CONFIG_XEN_BALLOON_MEMORY_HOTPLUG is not set
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_DEV_EVTCHN=m
CONFIG_XEN_BACKEND=y
CONFIG_XENFS=m
CONFIG_XEN_COMPAT_XENFS=y
CONFIG_XEN_SYS_HYPERVISOR=y
CONFIG_XEN_XENBUS_FRONTEND=y
# CONFIG_XEN_GNTDEV is not set
# CONFIG_XEN_GRANT_DEV_ALLOC is not set
CONFIG_SWIOTLB_XEN=y
CONFIG_XEN_TMEM=m
CONFIG_XEN_PCIDEV_BACKEND=m
# CONFIG_XEN_SCSI_BACKEND is not set
CONFIG_XEN_PRIVCMD=m
CONFIG_XEN_ACPI_PROCESSOR=m
# CONFIG_XEN_MCE_LOG is not set
CONFIG_XEN_HAVE_PVMMU=y
CONFIG_XEN_EFI=y
CONFIG_XEN_AUTO_XLATE=y
CONFIG_XEN_ACPI=y
CONFIG_XEN_SYMS=y
CONFIG_XEN_HAVE_VPMU=y
CONFIG_STAGING=y
# CONFIG_PRISM2_USB is not set
# CONFIG_COMEDI is not set
# CONFIG_RTL8192U is not set
CONFIG_RTLLIB=m
CONFIG_RTLLIB_CRYPTO_CCMP=m
CONFIG_RTLLIB_CRYPTO_TKIP=m
CONFIG_RTLLIB_CRYPTO_WEP=m
CONFIG_RTL8192E=m
CONFIG_R8712U=m
# CONFIG_R8188EU is not set
# CONFIG_RTS5208 is not set
# CONFIG_VT6655 is not set
# CONFIG_VT6656 is not set
# CONFIG_FB_SM750 is not set
# CONFIG_FB_XGI is not set

#
# Speakup console speech
#
# CONFIG_SPEAKUP is not set
# CONFIG_STAGING_MEDIA is not set

#
# Android
#
# CONFIG_LTE_GDM724X is not set
CONFIG_FIREWIRE_SERIAL=m
CONFIG_FWTTY_MAX_TOTAL_PORTS=64
CONFIG_FWTTY_MAX_CARD_PORTS=32
# CONFIG_LNET is not set
# CONFIG_DGNC is not set
# CONFIG_GS_FPGABOOT is not set
# CONFIG_CRYPTO_SKEIN is not set
# CONFIG_UNISYSSPAR is not set
# CONFIG_FB_TFT is not set
# CONFIG_WILC1000_SDIO is not set
# CONFIG_WILC1000_SPI is not set
# CONFIG_MOST is not set
# CONFIG_KS7010 is not set
# CONFIG_GREYBUS is not set
CONFIG_X86_PLATFORM_DEVICES=y
CONFIG_ACER_WMI=m
CONFIG_ACERHDF=m
# CONFIG_ALIENWARE_WMI is not set
CONFIG_ASUS_LAPTOP=m
# CONFIG_DELL_LAPTOP is not set
# CONFIG_DELL_WMI is not set
CONFIG_DELL_WMI_AIO=m
# CONFIG_DELL_SMO8800 is not set
# CONFIG_DELL_RBTN is not set
CONFIG_FUJITSU_LAPTOP=m
# CONFIG_FUJITSU_LAPTOP_DEBUG is not set
CONFIG_FUJITSU_TABLET=m
CONFIG_AMILO_RFKILL=m
CONFIG_HP_ACCEL=m
# CONFIG_HP_WIRELESS is not set
CONFIG_HP_WMI=m
CONFIG_MSI_LAPTOP=m
CONFIG_PANASONIC_LAPTOP=m
CONFIG_COMPAL_LAPTOP=m
CONFIG_SONY_LAPTOP=m
CONFIG_SONYPI_COMPAT=y
CONFIG_IDEAPAD_LAPTOP=m
# CONFIG_SURFACE3_WMI is not set
CONFIG_THINKPAD_ACPI=m
CONFIG_THINKPAD_ACPI_ALSA_SUPPORT=y
# CONFIG_THINKPAD_ACPI_DEBUGFACILITIES is not set
# CONFIG_THINKPAD_ACPI_DEBUG is not set
# CONFIG_THINKPAD_ACPI_UNSAFE_LEDS is not set
CONFIG_THINKPAD_ACPI_VIDEO=y
CONFIG_THINKPAD_ACPI_HOTKEY_POLL=y
CONFIG_SENSORS_HDAPS=m
# CONFIG_INTEL_MENLOW is not set
CONFIG_EEEPC_LAPTOP=m
CONFIG_ASUS_WMI=m
CONFIG_ASUS_NB_WMI=m
CONFIG_EEEPC_WMI=m
# CONFIG_ASUS_WIRELESS is not set
CONFIG_ACPI_WMI=m
CONFIG_MSI_WMI=m
CONFIG_TOPSTAR_LAPTOP=m
CONFIG_TOSHIBA_BT_RFKILL=m
# CONFIG_TOSHIBA_HAPS is not set
# CONFIG_TOSHIBA_WMI is not set
CONFIG_ACPI_CMPC=m
# CONFIG_INTEL_HID_EVENT is not set
# CONFIG_INTEL_VBTN is not set
CONFIG_INTEL_IPS=m
# CONFIG_INTEL_PMC_CORE is not set
# CONFIG_IBM_RTL is not set
CONFIG_SAMSUNG_LAPTOP=m
CONFIG_MXM_WMI=m
CONFIG_INTEL_OAKTRAIL=m
CONFIG_SAMSUNG_Q10=m
CONFIG_APPLE_GMUX=m
# CONFIG_INTEL_RST is not set
# CONFIG_INTEL_SMARTCONNECT is not set
CONFIG_PVPANIC=y
# CONFIG_INTEL_PMC_IPC is not set
# CONFIG_SURFACE_PRO3_BUTTON is not set
# CONFIG_INTEL_PUNIT_IPC is not set
# CONFIG_MLX_PLATFORM is not set
# CONFIG_MLX_CPLD_PLATFORM is not set
# CONFIG_INTEL_TURBO_MAX_3 is not set
# CONFIG_SILEAD_DMI is not set
CONFIG_PMC_ATOM=y
# CONFIG_CHROME_PLATFORMS is not set
CONFIG_CLKDEV_LOOKUP=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y

#
# Common Clock Framework
#
# CONFIG_COMMON_CLK_SI5351 is not set
# CONFIG_COMMON_CLK_CDCE706 is not set
# CONFIG_COMMON_CLK_CS2000_CP is not set
# CONFIG_COMMON_CLK_NXP is not set
# CONFIG_COMMON_CLK_PWM is not set
# CONFIG_COMMON_CLK_PXA is not set
# CONFIG_COMMON_CLK_PIC32 is not set

#
# Hardware Spinlock drivers
#

#
# Clock Source drivers
#
CONFIG_CLKEVT_I8253=y
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
# CONFIG_ATMEL_PIT is not set
# CONFIG_SH_TIMER_CMT is not set
# CONFIG_SH_TIMER_MTU2 is not set
# CONFIG_SH_TIMER_TMU is not set
# CONFIG_EM_TIMER_STI is not set
CONFIG_MAILBOX=y
CONFIG_PCC=y
# CONFIG_ALTERA_MBOX is not set
CONFIG_IOMMU_API=y
CONFIG_IOMMU_SUPPORT=y

#
# Generic IOMMU Pagetable Support
#
CONFIG_IOMMU_IOVA=y
CONFIG_AMD_IOMMU=y
CONFIG_AMD_IOMMU_V2=m
CONFIG_DMAR_TABLE=y
CONFIG_INTEL_IOMMU=y
# CONFIG_INTEL_IOMMU_SVM is not set
# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
CONFIG_INTEL_IOMMU_FLOPPY_WA=y
CONFIG_IRQ_REMAP=y

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set

#
# Rpmsg drivers
#

#
# SOC (System On Chip) specific Drivers
#

#
# Broadcom SoC drivers
#
# CONFIG_SUNXI_SRAM is not set
# CONFIG_SOC_TI is not set
# CONFIG_SOC_ZTE is not set
CONFIG_PM_DEVFREQ=y

#
# DEVFREQ Governors
#
CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=m
# CONFIG_DEVFREQ_GOV_PERFORMANCE is not set
# CONFIG_DEVFREQ_GOV_POWERSAVE is not set
# CONFIG_DEVFREQ_GOV_USERSPACE is not set
# CONFIG_DEVFREQ_GOV_PASSIVE is not set

#
# DEVFREQ Drivers
#
# CONFIG_PM_DEVFREQ_EVENT is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
CONFIG_NTB=m
# CONFIG_NTB_AMD is not set
# CONFIG_NTB_INTEL is not set
# CONFIG_NTB_PINGPONG is not set
# CONFIG_NTB_TOOL is not set
# CONFIG_NTB_PERF is not set
# CONFIG_NTB_TRANSPORT is not set
# CONFIG_VME_BUS is not set
CONFIG_PWM=y
CONFIG_PWM_SYSFS=y
# CONFIG_PWM_LPSS_PCI is not set
# CONFIG_PWM_LPSS_PLATFORM is not set
# CONFIG_PWM_PCA9685 is not set
CONFIG_ARM_GIC_MAX_NR=1
# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set
# CONFIG_FMC is not set

#
# PHY Subsystem
#
CONFIG_GENERIC_PHY=y
# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# CONFIG_BCM_KONA_USB2_PHY is not set
CONFIG_POWERCAP=y
CONFIG_INTEL_RAPL=m
# CONFIG_MCB is not set

#
# Performance monitor support
#
CONFIG_RAS=y
# CONFIG_MCE_AMD_INJ is not set
# CONFIG_THUNDERBOLT is not set

#
# Android
#
# CONFIG_ANDROID is not set
CONFIG_LIBNVDIMM=m
CONFIG_BLK_DEV_PMEM=m
CONFIG_ND_BLK=m
CONFIG_ND_CLAIM=y
CONFIG_ND_BTT=m
CONFIG_BTT=y
CONFIG_ND_PFN=m
CONFIG_NVDIMM_PFN=y
CONFIG_NVDIMM_DAX=y
CONFIG_DEV_DAX=m
CONFIG_DEV_DAX_PMEM=m
CONFIG_NR_DEV_DAX=32768
CONFIG_NVMEM=m
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set

#
# FPGA Configuration Support
#
# CONFIG_FPGA is not set

#
# FSI support
#
# CONFIG_FSI is not set

#
# Firmware Drivers
#
CONFIG_EDD=m
# CONFIG_EDD_OFF is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_DELL_RBU=m
CONFIG_DCDBAS=m
CONFIG_DMIID=y
CONFIG_DMI_SYSFS=y
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
CONFIG_ISCSI_IBFT_FIND=y
CONFIG_ISCSI_IBFT=m
# CONFIG_FW_CFG_SYSFS is not set
# CONFIG_GOOGLE_FIRMWARE is not set

#
# EFI (Extensible Firmware Interface) Support
#
CONFIG_EFI_VARS=y
CONFIG_EFI_ESRT=y
CONFIG_EFI_VARS_PSTORE=y
CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE=y
CONFIG_EFI_RUNTIME_MAP=y
# CONFIG_EFI_FAKE_MEMMAP is not set
CONFIG_EFI_RUNTIME_WRAPPERS=y
# CONFIG_EFI_BOOTLOADER_CONTROL is not set
# CONFIG_EFI_CAPSULE_LOADER is not set
# CONFIG_EFI_TEST is not set
# CONFIG_APPLE_PROPERTIES is not set
CONFIG_UEFI_CPER=y
# CONFIG_EFI_DEV_PATH_PARSER is not set

#
# Tegra firmware driver
#

#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_FS_IOMAP=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=y
CONFIG_EXT4_USE_FOR_EXT2=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
# CONFIG_EXT4_ENCRYPTION is not set
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
# CONFIG_XFS_RT is not set
# CONFIG_XFS_WARN is not set
# CONFIG_XFS_DEBUG is not set
CONFIG_GFS2_FS=m
CONFIG_GFS2_FS_LOCKING_DLM=y
CONFIG_OCFS2_FS=m
CONFIG_OCFS2_FS_O2CB=m
CONFIG_OCFS2_FS_USERSPACE_CLUSTER=m
CONFIG_OCFS2_FS_STATS=y
CONFIG_OCFS2_DEBUG_MASKLOG=y
# CONFIG_OCFS2_DEBUG_FS is not set
CONFIG_BTRFS_FS=m
CONFIG_BTRFS_FS_POSIX_ACL=y
# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
# CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set
# CONFIG_BTRFS_DEBUG is not set
# CONFIG_BTRFS_ASSERT is not set
# CONFIG_NILFS2_FS is not set
CONFIG_F2FS_FS=m
CONFIG_F2FS_STAT_FS=y
CONFIG_F2FS_FS_XATTR=y
CONFIG_F2FS_FS_POSIX_ACL=y
# CONFIG_F2FS_FS_SECURITY is not set
# CONFIG_F2FS_CHECK_FS is not set
# CONFIG_F2FS_FS_ENCRYPTION is not set
# CONFIG_F2FS_IO_TRACE is not set
# CONFIG_F2FS_FAULT_INJECTION is not set
CONFIG_FS_DAX=y
CONFIG_FS_DAX_PMD=y
CONFIG_FS_POSIX_ACL=y
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
CONFIG_MANDATORY_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_FANOTIFY=y
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
CONFIG_PRINT_QUOTA_WARNING=y
# CONFIG_QUOTA_DEBUG is not set
CONFIG_QUOTA_TREE=y
# CONFIG_QFMT_V1 is not set
CONFIG_QFMT_V2=y
CONFIG_QUOTACTL=y
CONFIG_QUOTACTL_COMPAT=y
CONFIG_AUTOFS4_FS=y
CONFIG_FUSE_FS=m
CONFIG_CUSE=m
CONFIG_OVERLAY_FS=m
# CONFIG_OVERLAY_FS_REDIRECT_DIR is not set

#
# Caches
#
CONFIG_FSCACHE=m
CONFIG_FSCACHE_STATS=y
# CONFIG_FSCACHE_HISTOGRAM is not set
# CONFIG_FSCACHE_DEBUG is not set
# CONFIG_FSCACHE_OBJECT_LIST is not set
CONFIG_CACHEFILES=m
# CONFIG_CACHEFILES_DEBUG is not set
# CONFIG_CACHEFILES_HISTOGRAM is not set

#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=m
CONFIG_UDF_NLS=y

#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
# CONFIG_FAT_DEFAULT_UTF8 is not set
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_VMCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_PROC_CHILDREN=y
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_XATTR=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
CONFIG_CONFIGFS_FS=y
CONFIG_EFIVAR_FS=y
CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ORANGEFS_FS is not set
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_ECRYPT_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_JFFS2_FS is not set
# CONFIG_UBIFS_FS is not set
CONFIG_CRAMFS=m
CONFIG_SQUASHFS=m
CONFIG_SQUASHFS_FILE_CACHE=y
# CONFIG_SQUASHFS_FILE_DIRECT is not set
CONFIG_SQUASHFS_DECOMP_SINGLE=y
# CONFIG_SQUASHFS_DECOMP_MULTI is not set
# CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU is not set
CONFIG_SQUASHFS_XATTR=y
CONFIG_SQUASHFS_ZLIB=y
# CONFIG_SQUASHFS_LZ4 is not set
CONFIG_SQUASHFS_LZO=y
CONFIG_SQUASHFS_XZ=y
# CONFIG_SQUASHFS_4K_DEVBLK_SIZE is not set
# CONFIG_SQUASHFS_EMBEDDED is not set
CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX6FS_FS is not set
# CONFIG_ROMFS_FS is not set
CONFIG_PSTORE=y
CONFIG_PSTORE_ZLIB_COMPRESS=y
# CONFIG_PSTORE_LZO_COMPRESS is not set
# CONFIG_PSTORE_LZ4_COMPRESS is not set
CONFIG_PSTORE_CONSOLE=y
CONFIG_PSTORE_PMSG=y
# CONFIG_PSTORE_FTRACE is not set
CONFIG_PSTORE_RAM=m
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_EXOFS_FS is not set
CONFIG_ORE=m
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
# CONFIG_NFS_V2 is not set
CONFIG_NFS_V3=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=m
# CONFIG_NFS_SWAP is not set
CONFIG_NFS_V4_1=y
CONFIG_NFS_V4_2=y
CONFIG_PNFS_FILE_LAYOUT=m
CONFIG_PNFS_BLOCK=m
CONFIG_PNFS_OBJLAYOUT=m
CONFIG_PNFS_FLEXFILE_LAYOUT=m
CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN="kernel.org"
# CONFIG_NFS_V4_1_MIGRATION is not set
CONFIG_NFS_V4_SECURITY_LABEL=y
CONFIG_ROOT_NFS=y
# CONFIG_NFS_USE_LEGACY_DNS is not set
CONFIG_NFS_USE_KERNEL_DNS=y
CONFIG_NFS_DEBUG=y
CONFIG_NFSD=m
CONFIG_NFSD_V2_ACL=y
CONFIG_NFSD_V3=y
CONFIG_NFSD_V3_ACL=y
CONFIG_NFSD_V4=y
# CONFIG_NFSD_BLOCKLAYOUT is not set
# CONFIG_NFSD_SCSILAYOUT is not set
# CONFIG_NFSD_FLEXFILELAYOUT is not set
CONFIG_NFSD_V4_SECURITY_LABEL=y
# CONFIG_NFSD_FAULT_INJECTION is not set
CONFIG_GRACE_PERIOD=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_NFS_ACL_SUPPORT=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=m
CONFIG_SUNRPC_BACKCHANNEL=y
CONFIG_RPCSEC_GSS_KRB5=m
CONFIG_SUNRPC_DEBUG=y
# CONFIG_CEPH_FS is not set
CONFIG_CIFS=m
CONFIG_CIFS_STATS=y
# CONFIG_CIFS_STATS2 is not set
CONFIG_CIFS_WEAK_PW_HASH=y
CONFIG_CIFS_UPCALL=y
CONFIG_CIFS_XATTR=y
CONFIG_CIFS_POSIX=y
CONFIG_CIFS_ACL=y
CONFIG_CIFS_DEBUG=y
# CONFIG_CIFS_DEBUG2 is not set
CONFIG_CIFS_DFS_UPCALL=y
CONFIG_CIFS_SMB2=y
# CONFIG_CIFS_SMB311 is not set
# CONFIG_CIFS_FSCACHE is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_9P_FS=y
CONFIG_9P_FS_POSIX_ACL=y
# CONFIG_9P_FS_SECURITY is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_CODEPAGE_737=m
CONFIG_NLS_CODEPAGE_775=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_CODEPAGE_852=m
CONFIG_NLS_CODEPAGE_855=m
CONFIG_NLS_CODEPAGE_857=m
CONFIG_NLS_CODEPAGE_860=m
CONFIG_NLS_CODEPAGE_861=m
CONFIG_NLS_CODEPAGE_862=m
CONFIG_NLS_CODEPAGE_863=m
CONFIG_NLS_CODEPAGE_864=m
CONFIG_NLS_CODEPAGE_865=m
CONFIG_NLS_CODEPAGE_866=m
CONFIG_NLS_CODEPAGE_869=m
CONFIG_NLS_CODEPAGE_936=m
CONFIG_NLS_CODEPAGE_950=m
CONFIG_NLS_CODEPAGE_932=m
CONFIG_NLS_CODEPAGE_949=m
CONFIG_NLS_CODEPAGE_874=m
CONFIG_NLS_ISO8859_8=m
CONFIG_NLS_CODEPAGE_1250=m
CONFIG_NLS_CODEPAGE_1251=m
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=m
CONFIG_NLS_ISO8859_2=m
CONFIG_NLS_ISO8859_3=m
CONFIG_NLS_ISO8859_4=m
CONFIG_NLS_ISO8859_5=m
CONFIG_NLS_ISO8859_6=m
CONFIG_NLS_ISO8859_7=m
CONFIG_NLS_ISO8859_9=m
CONFIG_NLS_ISO8859_13=m
CONFIG_NLS_ISO8859_14=m
CONFIG_NLS_ISO8859_15=m
CONFIG_NLS_KOI8_R=m
CONFIG_NLS_KOI8_U=m
CONFIG_NLS_MAC_ROMAN=m
CONFIG_NLS_MAC_CELTIC=m
CONFIG_NLS_MAC_CENTEURO=m
CONFIG_NLS_MAC_CROATIAN=m
CONFIG_NLS_MAC_CYRILLIC=m
CONFIG_NLS_MAC_GAELIC=m
CONFIG_NLS_MAC_GREEK=m
CONFIG_NLS_MAC_ICELAND=m
CONFIG_NLS_MAC_INUIT=m
CONFIG_NLS_MAC_ROMANIAN=m
CONFIG_NLS_MAC_TURKISH=m
CONFIG_NLS_UTF8=m
CONFIG_DLM=m
CONFIG_DLM_DEBUG=y

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y

#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
CONFIG_BOOT_PRINTK_DELAY=y
CONFIG_DYNAMIC_DEBUG=y

#
# Compile-time checks and compiler options
#
# CONFIG_DEBUG_INFO is not set
# CONFIG_ENABLE_WARN_DEPRECATED is not set
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=2048
CONFIG_STRIP_ASM_SYMS=y
# CONFIG_READABLE_ASM is not set
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_PAGE_OWNER is not set
CONFIG_DEBUG_FS=y
CONFIG_HEADERS_CHECK=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
CONFIG_ARCH_WANT_FRAME_POINTERS=y
CONFIG_FRAME_POINTER=y
# CONFIG_STACK_VALIDATION is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_MAGIC_SYSRQ_SERIAL=y
CONFIG_DEBUG_KERNEL=y

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_PAGE_REF is not set
CONFIG_DEBUG_RODATA_TEST=y
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_VM is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
# CONFIG_DEBUG_VIRTUAL is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
# CONFIG_DEBUG_PER_CPU_MAPS is not set
CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_HAVE_ARCH_KMEMCHECK=y
CONFIG_HAVE_ARCH_KASAN=y
# CONFIG_KASAN is not set
CONFIG_ARCH_HAS_KCOV=y
# CONFIG_KCOV is not set
CONFIG_DEBUG_SHIRQ=y

#
# Debug Lockups and Hangs
#
CONFIG_LOCKUP_DETECTOR=y
CONFIG_HARDLOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=1
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_WQ_WATCHDOG is not set
CONFIG_PANIC_ON_OOPS=y
CONFIG_PANIC_ON_OOPS_VALUE=1
CONFIG_PANIC_TIMEOUT=0
CONFIG_SCHED_DEBUG=y
CONFIG_SCHED_INFO=y
CONFIG_SCHEDSTATS=y
# CONFIG_SCHED_STACK_END_CHECK is not set
# CONFIG_DEBUG_TIMEKEEPING is not set

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
CONFIG_DEBUG_ATOMIC_SLEEP=y
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
CONFIG_LOCK_TORTURE_TEST=m
# CONFIG_WW_MUTEX_SELFTEST is not set
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_LIST=y
# CONFIG_DEBUG_PI_LIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set

#
# RCU Debugging
#
# CONFIG_PROVE_RCU is not set
CONFIG_SPARSE_RCU_POINTER=y
CONFIG_TORTURE_TEST=m
# CONFIG_RCU_PERF_TEST is not set
CONFIG_RCU_TORTURE_TEST=m
# CONFIG_RCU_TORTURE_TEST_SLOW_PREINIT is not set
# CONFIG_RCU_TORTURE_TEST_SLOW_INIT is not set
# CONFIG_RCU_TORTURE_TEST_SLOW_CLEANUP is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=60
# CONFIG_RCU_TRACE is not set
# CONFIG_RCU_EQS_DEBUG is not set
# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
CONFIG_NOTIFIER_ERROR_INJECTION=m
CONFIG_PM_NOTIFIER_ERROR_INJECT=m
# CONFIG_NETDEV_NOTIFIER_ERROR_INJECT is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_LATENCYTOP=y
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_FENTRY=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACER_MAX_TRACE=y
CONFIG_TRACE_CLOCK=y
CONFIG_RING_BUFFER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_RING_BUFFER_ALLOW_SWAP=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
CONFIG_FUNCTION_TRACER=y
CONFIG_FUNCTION_GRAPH_TRACER=y
# CONFIG_IRQSOFF_TRACER is not set
CONFIG_SCHED_TRACER=y
# CONFIG_HWLAT_TRACER is not set
CONFIG_FTRACE_SYSCALLS=y
CONFIG_TRACER_SNAPSHOT=y
# CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
CONFIG_STACK_TRACER=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_KPROBE_EVENTS=y
# CONFIG_UPROBE_EVENTS is not set
CONFIG_BPF_EVENTS=y
CONFIG_PROBE_EVENTS=y
CONFIG_DYNAMIC_FTRACE=y
CONFIG_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_FUNCTION_PROFILER=y
CONFIG_FTRACE_MCOUNT_RECORD=y
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_MMIOTRACE is not set
CONFIG_TRACING_MAP=y
CONFIG_HIST_TRIGGERS=y
# CONFIG_TRACEPOINT_BENCHMARK is not set
CONFIG_RING_BUFFER_BENCHMARK=m
# CONFIG_RING_BUFFER_STARTUP_TEST is not set
# CONFIG_TRACE_ENUM_MAP_FILE is not set
CONFIG_TRACING_EVENTS_GPIO=y

#
# Runtime Testing
#
CONFIG_LKDTM=m
# CONFIG_TEST_LIST_SORT is not set
# CONFIG_TEST_SORT is not set
# CONFIG_KPROBES_SANITY_TEST is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
CONFIG_RBTREE_TEST=m
CONFIG_INTERVAL_TREE_TEST=m
CONFIG_PERCPU_TEST=m
CONFIG_ATOMIC64_SELFTEST=y
CONFIG_ASYNC_RAID6_TEST=m
# CONFIG_TEST_HEXDUMP is not set
# CONFIG_TEST_STRING_HELPERS is not set
CONFIG_TEST_KSTRTOX=m
CONFIG_TEST_PRINTF=m
CONFIG_TEST_BITMAP=m
# CONFIG_TEST_UUID is not set
# CONFIG_TEST_RHASHTABLE is not set
# CONFIG_TEST_HASH is not set
CONFIG_PROVIDE_OHCI1394_DMA_INIT=y
# CONFIG_DMA_API_DEBUG is not set
CONFIG_TEST_LKM=m
CONFIG_TEST_USER_COPY=m
CONFIG_TEST_BPF=m
CONFIG_TEST_FIRMWARE=m
CONFIG_TEST_UDELAY=m
# CONFIG_MEMTEST is not set
CONFIG_TEST_STATIC_KEYS=m
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
# CONFIG_ARCH_WANTS_UBSAN_NO_NULL is not set
# CONFIG_UBSAN is not set
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
CONFIG_STRICT_DEVMEM=y
# CONFIG_IO_STRICT_DEVMEM is not set
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
CONFIG_EARLY_PRINTK_DBGP=y
# CONFIG_EARLY_PRINTK_EFI is not set
# CONFIG_X86_PTDUMP_CORE is not set
# CONFIG_X86_PTDUMP is not set
# CONFIG_EFI_PGT_DUMP is not set
# CONFIG_DEBUG_WX is not set
CONFIG_DOUBLEFAULT=y
# CONFIG_DEBUG_TLBFLUSH is not set
# CONFIG_IOMMU_DEBUG is not set
# CONFIG_IOMMU_STRESS is not set
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_X86_DECODER_SELFTEST=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
CONFIG_IO_DELAY_0X80=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=0
CONFIG_DEBUG_BOOT_PARAMS=y
# CONFIG_CPA_DEBUG is not set
CONFIG_OPTIMIZE_INLINING=y
# CONFIG_DEBUG_ENTRY is not set
# CONFIG_DEBUG_NMI_SELFTEST is not set
CONFIG_X86_DEBUG_FPU=y
# CONFIG_PUNIT_ATOM_DEBUG is not set

#
# Security options
#
CONFIG_KEYS=y
CONFIG_PERSISTENT_KEYRINGS=y
CONFIG_BIG_KEYS=y
CONFIG_TRUSTED_KEYS=y
CONFIG_ENCRYPTED_KEYS=y
# CONFIG_KEY_DH_OPERATIONS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
CONFIG_SECURITY=y
CONFIG_SECURITYFS=y
CONFIG_SECURITY_NETWORK=y
CONFIG_SECURITY_NETWORK_XFRM=y
# CONFIG_SECURITY_PATH is not set
CONFIG_INTEL_TXT=y
CONFIG_LSM_MMAP_MIN_ADDR=65535
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
CONFIG_HAVE_ARCH_HARDENED_USERCOPY=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SELINUX_BOOTPARAM=y
CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=1
CONFIG_SECURITY_SELINUX_DISABLE=y
CONFIG_SECURITY_SELINUX_DEVELOP=y
CONFIG_SECURITY_SELINUX_AVC_STATS=y
CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=1
# CONFIG_SECURITY_SMACK is not set
# CONFIG_SECURITY_TOMOYO is not set
# CONFIG_SECURITY_APPARMOR is not set
# CONFIG_SECURITY_LOADPIN is not set
# CONFIG_SECURITY_YAMA is not set
CONFIG_INTEGRITY=y
CONFIG_INTEGRITY_SIGNATURE=y
CONFIG_INTEGRITY_ASYMMETRIC_KEYS=y
CONFIG_INTEGRITY_TRUSTED_KEYRING=y
CONFIG_INTEGRITY_AUDIT=y
CONFIG_IMA=y
CONFIG_IMA_MEASURE_PCR_IDX=10
CONFIG_IMA_LSM_RULES=y
# CONFIG_IMA_TEMPLATE is not set
CONFIG_IMA_NG_TEMPLATE=y
# CONFIG_IMA_SIG_TEMPLATE is not set
CONFIG_IMA_DEFAULT_TEMPLATE="ima-ng"
CONFIG_IMA_DEFAULT_HASH_SHA1=y
# CONFIG_IMA_DEFAULT_HASH_SHA256 is not set
# CONFIG_IMA_DEFAULT_HASH_SHA512 is not set
# CONFIG_IMA_DEFAULT_HASH_WP512 is not set
CONFIG_IMA_DEFAULT_HASH="sha1"
# CONFIG_IMA_WRITE_POLICY is not set
# CONFIG_IMA_READ_POLICY is not set
CONFIG_IMA_APPRAISE=y
CONFIG_IMA_TRUSTED_KEYRING=y
# CONFIG_IMA_BLACKLIST_KEYRING is not set
# CONFIG_IMA_LOAD_X509 is not set
CONFIG_EVM=y
CONFIG_EVM_ATTR_FSUUID=y
# CONFIG_EVM_LOAD_X509 is not set
CONFIG_DEFAULT_SECURITY_SELINUX=y
# CONFIG_DEFAULT_SECURITY_DAC is not set
CONFIG_DEFAULT_SECURITY="selinux"
CONFIG_XOR_BLOCKS=m
CONFIG_ASYNC_CORE=m
CONFIG_ASYNC_MEMCPY=m
CONFIG_ASYNC_XOR=m
CONFIG_ASYNC_PQ=m
CONFIG_ASYNC_RAID6_RECOV=m
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_RNG_DEFAULT=y
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_AKCIPHER=y
CONFIG_CRYPTO_KPP2=y
CONFIG_CRYPTO_ACOMP2=y
CONFIG_CRYPTO_RSA=y
# CONFIG_CRYPTO_DH is not set
# CONFIG_CRYPTO_ECDH is not set
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
CONFIG_CRYPTO_USER=m
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
CONFIG_CRYPTO_GF128MUL=m
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_NULL2=y
CONFIG_CRYPTO_PCRYPT=m
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_CRYPTO_CRYPTD=m
# CONFIG_CRYPTO_MCRYPTD is not set
CONFIG_CRYPTO_AUTHENC=m
CONFIG_CRYPTO_TEST=m
CONFIG_CRYPTO_ABLK_HELPER=m
CONFIG_CRYPTO_SIMD=m
CONFIG_CRYPTO_GLUE_HELPER_X86=m
CONFIG_CRYPTO_ENGINE=m

#
# Authenticated Encryption with Associated Data
#
CONFIG_CRYPTO_CCM=m
CONFIG_CRYPTO_GCM=m
# CONFIG_CRYPTO_CHACHA20POLY1305 is not set
CONFIG_CRYPTO_SEQIV=y
CONFIG_CRYPTO_ECHAINIV=m

#
# Block modes
#
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CTR=y
CONFIG_CRYPTO_CTS=m
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_LRW=m
CONFIG_CRYPTO_PCBC=m
CONFIG_CRYPTO_XTS=m
# CONFIG_CRYPTO_KEYWRAP is not set

#
# Hash modes
#
CONFIG_CRYPTO_CMAC=m
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_XCBC=m
CONFIG_CRYPTO_VMAC=m

#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_CRC32C_INTEL=m
CONFIG_CRYPTO_CRC32=m
CONFIG_CRYPTO_CRC32_PCLMUL=m
CONFIG_CRYPTO_CRCT10DIF=y
CONFIG_CRYPTO_CRCT10DIF_PCLMUL=m
CONFIG_CRYPTO_GHASH=m
# CONFIG_CRYPTO_POLY1305 is not set
# CONFIG_CRYPTO_POLY1305_X86_64 is not set
CONFIG_CRYPTO_MD4=m
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_RMD128=m
CONFIG_CRYPTO_RMD160=m
CONFIG_CRYPTO_RMD256=m
CONFIG_CRYPTO_RMD320=m
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA1_SSSE3=m
CONFIG_CRYPTO_SHA256_SSSE3=m
CONFIG_CRYPTO_SHA512_SSSE3=m
# CONFIG_CRYPTO_SHA1_MB is not set
# CONFIG_CRYPTO_SHA256_MB is not set
# CONFIG_CRYPTO_SHA512_MB is not set
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=m
# CONFIG_CRYPTO_SHA3 is not set
CONFIG_CRYPTO_TGR192=m
CONFIG_CRYPTO_WP512=m
CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL=m

#
# Ciphers
#
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_AES_TI is not set
CONFIG_CRYPTO_AES_X86_64=y
CONFIG_CRYPTO_AES_NI_INTEL=m
CONFIG_CRYPTO_ANUBIS=m
CONFIG_CRYPTO_ARC4=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_BLOWFISH_COMMON=m
CONFIG_CRYPTO_BLOWFISH_X86_64=m
CONFIG_CRYPTO_CAMELLIA=m
CONFIG_CRYPTO_CAMELLIA_X86_64=m
CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64=m
CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64=m
CONFIG_CRYPTO_CAST_COMMON=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST5_AVX_X86_64=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_CAST6_AVX_X86_64=m
CONFIG_CRYPTO_DES=m
# CONFIG_CRYPTO_DES3_EDE_X86_64 is not set
CONFIG_CRYPTO_FCRYPT=m
CONFIG_CRYPTO_KHAZAD=m
CONFIG_CRYPTO_SALSA20=m
CONFIG_CRYPTO_SALSA20_X86_64=m
# CONFIG_CRYPTO_CHACHA20 is not set
# CONFIG_CRYPTO_CHACHA20_X86_64 is not set
CONFIG_CRYPTO_SEED=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_SERPENT_SSE2_X86_64=m
CONFIG_CRYPTO_SERPENT_AVX_X86_64=m
CONFIG_CRYPTO_SERPENT_AVX2_X86_64=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
CONFIG_CRYPTO_TWOFISH_X86_64=m
CONFIG_CRYPTO_TWOFISH_X86_64_3WAY=m
CONFIG_CRYPTO_TWOFISH_AVX_X86_64=m

#
# Compression
#
CONFIG_CRYPTO_DEFLATE=m
CONFIG_CRYPTO_LZO=y
# CONFIG_CRYPTO_842 is not set
# CONFIG_CRYPTO_LZ4 is not set
# CONFIG_CRYPTO_LZ4HC is not set

#
# Random Number Generation
#
CONFIG_CRYPTO_ANSI_CPRNG=m
CONFIG_CRYPTO_DRBG_MENU=y
CONFIG_CRYPTO_DRBG_HMAC=y
# CONFIG_CRYPTO_DRBG_HASH is not set
# CONFIG_CRYPTO_DRBG_CTR is not set
CONFIG_CRYPTO_DRBG=y
CONFIG_CRYPTO_JITTERENTROPY=y
CONFIG_CRYPTO_USER_API=y
CONFIG_CRYPTO_USER_API_HASH=y
CONFIG_CRYPTO_USER_API_SKCIPHER=y
# CONFIG_CRYPTO_USER_API_RNG is not set
# CONFIG_CRYPTO_USER_API_AEAD is not set
CONFIG_CRYPTO_HASH_INFO=y
CONFIG_CRYPTO_HW=y
CONFIG_CRYPTO_DEV_PADLOCK=m
CONFIG_CRYPTO_DEV_PADLOCK_AES=m
CONFIG_CRYPTO_DEV_PADLOCK_SHA=m
# CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API_DESC is not set
# CONFIG_CRYPTO_DEV_CCP is not set
# CONFIG_CRYPTO_DEV_QAT_DH895xCC is not set
# CONFIG_CRYPTO_DEV_QAT_C3XXX is not set
# CONFIG_CRYPTO_DEV_QAT_C62X is not set
# CONFIG_CRYPTO_DEV_QAT_DH895xCCVF is not set
# CONFIG_CRYPTO_DEV_QAT_C3XXXVF is not set
# CONFIG_CRYPTO_DEV_QAT_C62XVF is not set
# CONFIG_CRYPTO_DEV_CHELSIO is not set
CONFIG_CRYPTO_DEV_VIRTIO=m
CONFIG_ASYMMETRIC_KEY_TYPE=y
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
CONFIG_X509_CERTIFICATE_PARSER=y
# CONFIG_PKCS7_MESSAGE_PARSER is not set

#
# Certificates for signature checking
#
CONFIG_SYSTEM_TRUSTED_KEYRING=y
CONFIG_SYSTEM_TRUSTED_KEYS=""
# CONFIG_SYSTEM_EXTRA_CERTIFICATE is not set
# CONFIG_SECONDARY_TRUSTED_KEYRING is not set
CONFIG_HAVE_KVM=y
CONFIG_HAVE_KVM_IRQCHIP=y
CONFIG_HAVE_KVM_IRQFD=y
CONFIG_HAVE_KVM_IRQ_ROUTING=y
CONFIG_HAVE_KVM_EVENTFD=y
CONFIG_KVM_MMIO=y
CONFIG_KVM_ASYNC_PF=y
CONFIG_HAVE_KVM_MSI=y
CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y
CONFIG_KVM_VFIO=y
CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y
CONFIG_KVM_COMPAT=y
CONFIG_HAVE_KVM_IRQ_BYPASS=y
CONFIG_VIRTUALIZATION=y
CONFIG_KVM=m
CONFIG_KVM_INTEL=m
CONFIG_KVM_AMD=m
CONFIG_KVM_MMU_AUDIT=y
# CONFIG_KVM_DEVICE_ASSIGNMENT is not set
CONFIG_VHOST_NET=m
# CONFIG_VHOST_SCSI is not set
# CONFIG_VHOST_VSOCK is not set
CONFIG_VHOST=m
# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set
CONFIG_BINARY_PRINTF=y

#
# Library routines
#
CONFIG_RAID6_PQ=m
CONFIG_BITREVERSE=y
# CONFIG_HAVE_ARCH_BITREVERSE is not set
CONFIG_RATIONAL=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_IO=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=y
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=m
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=y
CONFIG_CRC8=m
# CONFIG_AUDIT_ARCH_COMPAT_GENERIC is not set
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_LZ4_DECOMPRESS=y
CONFIG_XZ_DEC=y
CONFIG_XZ_DEC_X86=y
CONFIG_XZ_DEC_POWERPC=y
CONFIG_XZ_DEC_IA64=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_ARMTHUMB=y
CONFIG_XZ_DEC_SPARC=y
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DECOMPRESS_XZ=y
CONFIG_DECOMPRESS_LZO=y
CONFIG_DECOMPRESS_LZ4=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_REED_SOLOMON=m
CONFIG_REED_SOLOMON_ENC8=y
CONFIG_REED_SOLOMON_DEC8=y
CONFIG_TEXTSEARCH=y
CONFIG_TEXTSEARCH_KMP=m
CONFIG_TEXTSEARCH_BM=m
CONFIG_TEXTSEARCH_FSM=m
CONFIG_BTREE=y
CONFIG_INTERVAL_TREE=y
CONFIG_RADIX_TREE_MULTIORDER=y
CONFIG_ASSOCIATIVE_ARRAY=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
# CONFIG_DMA_NOOP_OPS is not set
# CONFIG_DMA_VIRT_OPS is not set
CONFIG_CHECK_SIGNATURE=y
CONFIG_CPUMASK_OFFSTACK=y
CONFIG_CPU_RMAP=y
CONFIG_DQL=y
CONFIG_GLOB=y
# CONFIG_GLOB_SELFTEST is not set
CONFIG_NLATTR=y
CONFIG_CLZ_TAB=y
CONFIG_CORDIC=m
# CONFIG_DDR is not set
CONFIG_IRQ_POLL=y
CONFIG_MPILIB=y
CONFIG_SIGNATURE=y
CONFIG_OID_REGISTRY=y
CONFIG_UCS2_STRING=y
CONFIG_FONT_SUPPORT=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_SG_SPLIT is not set
CONFIG_SG_POOL=y
CONFIG_ARCH_HAS_SG_CHAIN=y
CONFIG_ARCH_HAS_PMEM_API=y
CONFIG_ARCH_HAS_MMIO_FLUSH=y
CONFIG_SBITMAP=y

[-- Attachment #3: job-script --]
[-- Type: text/plain, Size: 6777 bytes --]

#!/bin/sh

export_top_env()
{
	export suite='unixbench'
	export testcase='unixbench'
	export category='benchmark'
	export runtime=300
	export nr_task=4
	export job_origin='/lkp/lkp/.src-20170421-123358/allot/cyclic:linux-devel:devel-hourly/lkp-ivb-d04/unixbench.yaml'
	export queue='bisect'
	export testbox='lkp-ivb-d04'
	export tbox_group='lkp-ivb-d04'
	export submit_id='5901136f0b9a93bfce755a7e'
	export job_file='/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.yaml'
	export id='08de2401e2e77aabc2f5316076e9c3f42ddb39e7'
	export model='Ivy Bridge'
	export nr_cpu=4
	export memory='4G'
	export nr_hdd_partitions=0
	export hdd_partitions=
	export netconsole_port=6675
	export brand='Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz'
	export commit='95510aef27899c42a1b8c25a656b44d31fc5fcad'
	export kconfig='x86_64-rhel-7.2'
	export compiler='gcc-6'
	export rootfs='debian-x86_64-2016-08-31.cgz'
	export enqueue_time='2017-04-27 05:38:56 +0800'
	export _id='5901136f0b9a93bfce755a7e'
	export _rt='/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad'
	export user='lkp'
	export head_commit='b381f0f40c5b1dffb5fe50e623573500537d6df1'
	export base_commit='4f7d029b9bf009fbee76bb10c0c4351a1870d2f3'
	export branch='linux-devel/devel-hourly-2017042307'
	export result_root='/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/0'
	export LKP_SERVER='inn'
	export max_uptime=1500
	export initrd='/osimage/debian/debian-x86_64-2016-08-31.cgz'
	export bootloader_append='root=/dev/ram0
user=lkp
job=/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.yaml
ARCH=x86_64
kconfig=x86_64-rhel-7.2
branch=linux-devel/devel-hourly-2017042307
commit=95510aef27899c42a1b8c25a656b44d31fc5fcad
BOOT_IMAGE=/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/vmlinuz-4.11.0-rc6-01591-g95510ae
max_uptime=1500
RESULT_ROOT=/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/0
LKP_SERVER=inn
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
printk.devkmsg=on
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
drbd.minor_count=8
systemd.log_level=err
ignore_loglevel
earlyprintk=ttyS0,115200
console=ttyS0,115200
console=tty0
vga=normal
rw'
	export lkp_initrd='/lkp/lkp/lkp-x86_64.cgz'
	export modules_initrd='/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/modules.cgz'
	export bm_initrd='/osimage/deps/debian-x86_64-2016-08-31.cgz/lkp_2017-04-26.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/rsync-rootfs_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/run-ipconfig_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/unixbench_2016-11-15.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/unixbench-x86_64_2017-04-11.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/iostat_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/turbostat_2016-11-15.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/turbostat-x86_64_2016-09-02.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/perf_2016-11-16.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/perf-x86_64_2016-11-16.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/hw_2016-11-15.cgz'
	export site='inn'
	export LKP_CGI_PORT=80
	export LKP_CIFS_PORT=139
	export kernel='/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/vmlinuz-4.11.0-rc6-01591-g95510ae'
	export dequeue_time='2017-04-27 05:58:38 +0800'
	export job_initrd='/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.cgz'

	[ -n "$LKP_SRC" ] ||
	export LKP_SRC=/lkp/${user:-lkp}/src
}

run_job()
{
	echo $$ > $TMP/run-job.pid

	. $LKP_SRC/lib/http.sh
	. $LKP_SRC/lib/job.sh
	. $LKP_SRC/lib/env.sh

	export_top_env

	run_setup $LKP_SRC/setup/cpufreq_governor 'performance'

	run_monitor $LKP_SRC/monitors/wrapper kmsg
	run_monitor $LKP_SRC/monitors/wrapper iostat
	run_monitor $LKP_SRC/monitors/wrapper heartbeat
	run_monitor $LKP_SRC/monitors/wrapper vmstat
	run_monitor $LKP_SRC/monitors/wrapper numa-numastat
	run_monitor $LKP_SRC/monitors/wrapper numa-vmstat
	run_monitor $LKP_SRC/monitors/wrapper numa-meminfo
	run_monitor $LKP_SRC/monitors/wrapper proc-vmstat
	run_monitor $LKP_SRC/monitors/wrapper proc-stat
	run_monitor $LKP_SRC/monitors/wrapper meminfo
	run_monitor $LKP_SRC/monitors/wrapper slabinfo
	run_monitor $LKP_SRC/monitors/wrapper interrupts
	run_monitor $LKP_SRC/monitors/wrapper lock_stat
	run_monitor $LKP_SRC/monitors/wrapper latency_stats
	run_monitor $LKP_SRC/monitors/wrapper softirqs
	run_monitor $LKP_SRC/monitors/one-shot/wrapper bdi_dev_mapping
	run_monitor $LKP_SRC/monitors/wrapper diskstats
	run_monitor $LKP_SRC/monitors/wrapper nfsstat
	run_monitor $LKP_SRC/monitors/wrapper cpuidle
	run_monitor $LKP_SRC/monitors/wrapper cpufreq-stats
	run_monitor $LKP_SRC/monitors/wrapper turbostat
	run_monitor $LKP_SRC/monitors/wrapper sched_debug
	run_monitor $LKP_SRC/monitors/wrapper perf-stat
	run_monitor $LKP_SRC/monitors/wrapper mpstat
	run_monitor $LKP_SRC/monitors/no-stdout/wrapper perf-profile
	run_monitor $LKP_SRC/monitors/wrapper oom-killer
	run_monitor $LKP_SRC/monitors/plain/watchdog
	run_monitor $LKP_SRC/monitors/wrapper nfs-hang

	run_test test='context1' $LKP_SRC/tests/wrapper unixbench
}

extract_stats()
{
	$LKP_SRC/stats/wrapper unixbench
	$LKP_SRC/stats/wrapper kmsg
	$LKP_SRC/stats/wrapper iostat
	$LKP_SRC/stats/wrapper vmstat
	$LKP_SRC/stats/wrapper numa-numastat
	$LKP_SRC/stats/wrapper numa-vmstat
	$LKP_SRC/stats/wrapper numa-meminfo
	$LKP_SRC/stats/wrapper proc-vmstat
	$LKP_SRC/stats/wrapper meminfo
	$LKP_SRC/stats/wrapper slabinfo
	$LKP_SRC/stats/wrapper interrupts
	$LKP_SRC/stats/wrapper lock_stat
	$LKP_SRC/stats/wrapper latency_stats
	$LKP_SRC/stats/wrapper softirqs
	$LKP_SRC/stats/wrapper diskstats
	$LKP_SRC/stats/wrapper nfsstat
	$LKP_SRC/stats/wrapper cpuidle
	$LKP_SRC/stats/wrapper turbostat
	$LKP_SRC/stats/wrapper sched_debug
	$LKP_SRC/stats/wrapper perf-stat
	$LKP_SRC/stats/wrapper mpstat
	$LKP_SRC/stats/wrapper perf-profile

	$LKP_SRC/stats/wrapper time unixbench.time
	$LKP_SRC/stats/wrapper time
	$LKP_SRC/stats/wrapper dmesg
	$LKP_SRC/stats/wrapper kmsg
	$LKP_SRC/stats/wrapper stderr
	$LKP_SRC/stats/wrapper last_state
}

"$@"

[-- Attachment #4: dmesg.xz --]
[-- Type: application/octet-stream, Size: 21144 bytes --]

[-- Attachment #5: unixbench --]
[-- Type: text/plain, Size: 2621 bytes --]

2017-04-27 06:00:14 ./Run context1 -c 4 -i 30

   #    #  #    #  #  #    #          #####   ######  #    #   ####   #    #
   #    #  ##   #  #   #  #           #    #  #       ##   #  #    #  #    #
   #    #  # #  #  #    ##            #####   #####   # #  #  #       ######
   #    #  #  # #  #    ##            #    #  #       #  # #  #       #    #
   #    #  #   ##  #   #  #           #    #  #       #   ##  #    #  #    #
    ####   #    #  #  #    #          #####   ######  #    #   ####   #    #

   Version 5.1.3                      Based on the Byte Magazine Unix Benchmark

   Multi-CPU version                  Version 5 revisions by Ian Smith,
                                      Sunnyvale, CA, USA
   January 13, 2011                   johantheghost at yahoo period com


4 x Pipe-based Context Switching  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

========================================================================
   BYTE UNIX Benchmarks (Version 5.1.3)

   System: lkp-ivb-d04: GNU/Linux
   OS: GNU/Linux -- 4.11.0-rc6-01591-g95510ae -- #1 SMP Thu Apr 27 05:48:32 CST 2017
   Machine: x86_64 (unknown)
   Language: C (charmap="ANSI_X3.4-1968", collate="ANSI_X3.4-1968")
   CPU 0: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (6584.7 bogomips)
          Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization
   CPU 1: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (6588.3 bogomips)
          Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization
   CPU 2: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (6590.6 bogomips)
          Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization
   CPU 3: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (6588.8 bogomips)
          Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization
   06:00:14 up 1 min,  0 users,  load average: 0.61, 0.14, 0.04; runlevel 

------------------------------------------------------------------------
Benchmark Run: Thu Apr 27 2017 06:00:14 - 06:06:44
4 CPUs in system; running 4 parallel copies of tests

Pipe-based Context Switching                 562630.9 lps   (10.0 s, 20 samples)

System Benchmarks Partial Index              BASELINE       RESULT    INDEX
Pipe-based Context Switching                   4000.0     562630.9   1406.6
                                                                   ========
System Benchmarks Index Score (Partial Only)                         1406.6


[-- Attachment #6: job.yaml --]
[-- Type: text/plain, Size: 4379 bytes --]

---

#! jobs/unixbench.yaml
suite: unixbench
testcase: unixbench
category: benchmark
runtime: 300s
nr_task: 100%
unixbench:
  test: context1
job_origin: "/lkp/lkp/.src-20170421-123358/allot/cyclic:linux-devel:devel-hourly/lkp-ivb-d04/unixbench.yaml"

#! queue options
queue: bisect
testbox: lkp-ivb-d04
tbox_group: lkp-ivb-d04
submit_id: 5901136f0b9a93bfce755a7e
job_file: "/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.yaml"
id: 08de2401e2e77aabc2f5316076e9c3f42ddb39e7

#! hosts/lkp-ivb-d04
model: Ivy Bridge
nr_cpu: 4
memory: 4G
nr_hdd_partitions: 0
hdd_partitions: 
netconsole_port: 6675
brand: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz

#! include/category/benchmark
kmsg: 
iostat: 
heartbeat: 
vmstat: 
numa-numastat: 
numa-vmstat: 
numa-meminfo: 
proc-vmstat: 
proc-stat: 
meminfo: 
slabinfo: 
interrupts: 
lock_stat: 
latency_stats: 
softirqs: 
bdi_dev_mapping: 
diskstats: 
nfsstat: 
cpuidle: 
cpufreq-stats: 
turbostat: 
sched_debug: 
perf-stat: 
mpstat: 
perf-profile: 

#! include/category/ALL
cpufreq_governor: performance

#! include/queue/cyclic
commit: 95510aef27899c42a1b8c25a656b44d31fc5fcad

#! default params
kconfig: x86_64-rhel-7.2
compiler: gcc-6
rootfs: debian-x86_64-2016-08-31.cgz
enqueue_time: 2017-04-27 05:38:56.017864028 +08:00
_id: 5901136f0b9a93bfce755a7e
_rt: "/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad"

#! schedule options
user: lkp
head_commit: b381f0f40c5b1dffb5fe50e623573500537d6df1
base_commit: 4f7d029b9bf009fbee76bb10c0c4351a1870d2f3
branch: linux-devel/devel-hourly-2017042307
result_root: "/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/0"
LKP_SERVER: inn
max_uptime: 1500
initrd: "/osimage/debian/debian-x86_64-2016-08-31.cgz"
bootloader_append:
- root=/dev/ram0
- user=lkp
- job=/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.yaml
- ARCH=x86_64
- kconfig=x86_64-rhel-7.2
- branch=linux-devel/devel-hourly-2017042307
- commit=95510aef27899c42a1b8c25a656b44d31fc5fcad
- BOOT_IMAGE=/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/vmlinuz-4.11.0-rc6-01591-g95510ae
- max_uptime=1500
- RESULT_ROOT=/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/0
- LKP_SERVER=inn
- debug
- apic=debug
- sysrq_always_enabled
- rcupdate.rcu_cpu_stall_timeout=100
- net.ifnames=0
- printk.devkmsg=on
- panic=-1
- softlockup_panic=1
- nmi_watchdog=panic
- oops=panic
- load_ramdisk=2
- prompt_ramdisk=0
- drbd.minor_count=8
- systemd.log_level=err
- ignore_loglevel
- earlyprintk=ttyS0,115200
- console=ttyS0,115200
- console=tty0
- vga=normal
- rw
lkp_initrd: "/lkp/lkp/lkp-x86_64.cgz"
modules_initrd: "/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/modules.cgz"
bm_initrd: "/osimage/deps/debian-x86_64-2016-08-31.cgz/lkp_2017-04-26.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/rsync-rootfs_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/run-ipconfig_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/unixbench_2016-11-15.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/unixbench-x86_64_2017-04-11.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/iostat_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/turbostat_2016-11-15.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/turbostat-x86_64_2016-09-02.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/perf_2016-11-16.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/perf-x86_64_2016-11-16.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/hw_2016-11-15.cgz"
site: inn

#! /lkp/lkp/.src-20170422-064054/include/site/inn
LKP_CGI_PORT: 80
LKP_CIFS_PORT: 139
oom-killer: 
watchdog: 
nfs-hang: 

#! runtime status

#! user overrides
kernel: "/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/vmlinuz-4.11.0-rc6-01591-g95510ae"
dequeue_time: 2017-04-27 05:58:38.197618487 +08:00

#! /lkp/lkp/.src-20170426-224010/include/site/inn
job_state: finished
loadavg: '4.45'

[-- Attachment #7: reproduce --]
[-- Type: text/plain, Size: 128 bytes --]


for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
do
	echo performance > $file
done

./Run context1 -c 4 -i 30

[sk_buff] 95510aef27: BUG:Bad_page_state_in_process

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 48513 bytes --]

FYI, we noticed the following commit:

commit: 95510aef27899c42a1b8c25a656b44d31fc5fcad ("sk_buff: remove support for csum_bad in sk_buff")
url: https://github.com/0day-ci/linux/commits/Davide-Caratti/skbuff-add-stub-to-help-computing-crc32c-on-SCTP-packets/20170420-233814


in testcase: unixbench
with following parameters:

	runtime: 300s
	nr_task: 100%
	test: context1
	cpufreq_governor: performance

test-description: UnixBench is the original BYTE UNIX benchmark suite aims to test performance of Unix-like system.
test-url: https://github.com/kdlucas/byte-unixbench


on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 4G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+----------------+------------+------------+
|                | 4c264afe8e | 95510aef27 |
+----------------+------------+------------+
| boot_successes | 4          | 3          |
+----------------+------------+------------+



[  479.604098] BUG: Bad page state in process swapper/3  pfn:11bd99
[  479.604100] page:ffffea00046f6640 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.604101] flags: 0x17ffffc0000000()
[  479.604103] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.604104] raw: 0000000000000000 0000000300000001 0000000000000000 0000000000000000
[  479.604104] page dumped because: nonzero _count
[  479.604105] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.604124] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.11.0-rc6-01591-g95510ae #1
[  479.604125] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.604125] Call Trace:
[  479.604127]  <IRQ>
[  479.604131]  dump_stack+0x63/0x8a
[  479.604134]  bad_page+0xc4/0x130
[  479.604135]  check_new_page_bad+0x67/0x80
[  479.604137]  get_page_from_freelist+0x448/0xca0
[  479.604139]  __alloc_pages_nodemask+0xd0/0x240
[  479.604140]  page_frag_alloc+0xc0/0x1a0
[  479.604143]  __napi_alloc_skb+0x8e/0xf0
[  479.604145]  rtl8169_poll+0x1dd/0x640
[  479.604147]  net_rx_action+0x23c/0x3f0
[  479.604148]  ? rtl8169_interrupt+0x6b/0x70
[  479.604150]  __do_softirq+0x104/0x2cb
[  479.604153]  irq_exit+0xf1/0x100
[  479.604155]  do_IRQ+0x4f/0xd0
[  479.604157]  common_interrupt+0x93/0x93
[  479.604159] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.604160] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.604161] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.604161] RDX: 0000006faaa19b7c RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.604162] RBP: ffffc900006bbeb8 R08: 000000000000049e R09: 0000000000000018
[  479.604162] R10: ffffc900006bbe48 R11: 000000000000028c R12: ffff88011fba4500
[  479.604163] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.604163]  </IRQ>
[  479.604165]  ? cpuidle_enter_state+0x110/0x2e0
[  479.604167]  cpuidle_enter+0x17/0x20
[  479.604169]  call_cpuidle+0x23/0x40
[  479.604170]  do_idle+0x189/0x200
[  479.604171]  cpu_startup_entry+0x1d/0x20
[  479.604174]  start_secondary+0x107/0x130
[  479.604175]  start_cpu+0x14/0x14
[  479.604176] Disabling lock debugging due to kernel taint
[  479.605091] BUG: Bad page state in process swapper/3  pfn:117b70
[  479.605092] page:ffffea00045edc00 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.605092] flags: 0x17ffffc0000000()
[  479.605094] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.605095] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
[  479.605095] page dumped because: nonzero _count
[  479.605095] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.605112] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.605113] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.605113] Call Trace:
[  479.605114]  <IRQ>
[  479.605116]  dump_stack+0x63/0x8a
[  479.605118]  bad_page+0xc4/0x130
[  479.605119]  check_new_page_bad+0x67/0x80
[  479.605121]  get_page_from_freelist+0x46c/0xca0
[  479.605123]  ? tcp_gro_receive+0x259/0x310
[  479.605125]  __alloc_pages_nodemask+0xd0/0x240
[  479.605126]  page_frag_alloc+0xc0/0x1a0
[  479.605129]  __napi_alloc_skb+0x8e/0xf0
[  479.605131]  rtl8169_poll+0x1dd/0x640
[  479.605132]  net_rx_action+0x23c/0x3f0
[  479.605133]  ? rtl8169_interrupt+0x6b/0x70
[  479.605134]  __do_softirq+0x104/0x2cb
[  479.605137]  irq_exit+0xf1/0x100
[  479.605139]  do_IRQ+0x4f/0xd0
[  479.605140]  common_interrupt+0x93/0x93
[  479.605142] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.605142] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.605143] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.605144] RDX: 0000006faab0b565 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.605145] RBP: ffffc900006bbeb8 R08: 0000000000000294 R09: 0000000000000018
[  479.605145] R10: ffffc900006bbe48 R11: 000000000000028c R12: ffff88011fba4500
[  479.605145] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.605146]  </IRQ>
[  479.605148]  ? cpuidle_enter_state+0x110/0x2e0
[  479.605149]  cpuidle_enter+0x17/0x20
[  479.605151]  call_cpuidle+0x23/0x40
[  479.605151]  do_idle+0x189/0x200
[  479.605152]  cpu_startup_entry+0x1d/0x20
[  479.605155]  start_secondary+0x107/0x130
[  479.605156]  start_cpu+0x14/0x14
[  479.606932] BUG: Bad page state in process swapper/3  pfn:116f19
[  479.606933] page:ffffea00045bc640 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.606934] flags: 0x17ffffc0000000()
[  479.606935] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.606936] raw: 0000000000000000 0000000300000001 0000000000000000 0000000000000000
[  479.606936] page dumped because: nonzero _count
[  479.606936] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.606952] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.606953] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.606953] Call Trace:
[  479.606954]  <IRQ>
[  479.606956]  dump_stack+0x63/0x8a
[  479.606957]  bad_page+0xc4/0x130
[  479.606958]  check_new_page_bad+0x67/0x80
[  479.606960]  get_page_from_freelist+0x448/0xca0
[  479.606962]  ? tcp_gro_receive+0x259/0x310
[  479.606963]  __alloc_pages_nodemask+0xd0/0x240
[  479.606965]  page_frag_alloc+0xc0/0x1a0
[  479.606967]  __napi_alloc_skb+0x8e/0xf0
[  479.606969]  rtl8169_poll+0x1dd/0x640
[  479.606970]  net_rx_action+0x23c/0x3f0
[  479.606971]  ? rtl8169_interrupt+0x6b/0x70
[  479.606973]  __do_softirq+0x104/0x2cb
[  479.606975]  irq_exit+0xf1/0x100
[  479.606977]  do_IRQ+0x4f/0xd0
[  479.606978]  common_interrupt+0x93/0x93
[  479.606980] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.606980] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.606981] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.606982] RDX: 0000006faacc6225 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.606982] RBP: ffffc900006bbeb8 R08: 000000000000028b R09: 0000000000000018
[  479.606983] R10: ffffc900006bbe48 R11: 000000000000023b R12: ffff88011fba4500
[  479.606983] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.606984]  </IRQ>
[  479.606985]  ? cpuidle_enter_state+0x110/0x2e0
[  479.606987]  cpuidle_enter+0x17/0x20
[  479.606989]  call_cpuidle+0x23/0x40
[  479.606989]  do_idle+0x189/0x200
[  479.606990]  cpu_startup_entry+0x1d/0x20
[  479.606992]  start_secondary+0x107/0x130
[  479.606993]  start_cpu+0x14/0x14
[  479.607896] BUG: Bad page state in process swapper/3  pfn:11640c
[  479.607897] page:ffffea0004590300 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.607898] flags: 0x17ffffc0000000()
[  479.607899] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.607900] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.607900] page dumped because: nonzero _count
[  479.607900] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.607915] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.607916] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.607916] Call Trace:
[  479.607916]  <IRQ>
[  479.607918]  dump_stack+0x63/0x8a
[  479.607920]  bad_page+0xc4/0x130
[  479.607921]  check_new_page_bad+0x67/0x80
[  479.607922]  get_page_from_freelist+0x448/0xca0
[  479.607924]  ? tcp_gro_receive+0x259/0x310
[  479.607926]  __alloc_pages_nodemask+0xd0/0x240
[  479.607927]  page_frag_alloc+0xc0/0x1a0
[  479.607929]  __napi_alloc_skb+0x8e/0xf0
[  479.607930]  rtl8169_poll+0x1dd/0x640
[  479.607932]  net_rx_action+0x23c/0x3f0
[  479.607933]  ? rtl8169_interrupt+0x6b/0x70
[  479.607934]  __do_softirq+0x104/0x2cb
[  479.607936]  irq_exit+0xf1/0x100
[  479.607938]  do_IRQ+0x4f/0xd0
[  479.607940]  common_interrupt+0x93/0x93
[  479.607941] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.607941] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.607942] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.607943] RDX: 0000006faadb774d RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.607943] RBP: ffffc900006bbeb8 R08: 000000000000028b R09: 0000000000000018
[  479.607944] R10: ffffc900006bbe48 R11: 000000000000027e R12: ffff88011fba4500
[  479.607944] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.607945]  </IRQ>
[  479.607946]  ? cpuidle_enter_state+0x110/0x2e0
[  479.607948]  cpuidle_enter+0x17/0x20
[  479.607949]  call_cpuidle+0x23/0x40
[  479.607950]  do_idle+0x189/0x200
[  479.607951]  cpu_startup_entry+0x1d/0x20
[  479.607953]  start_secondary+0x107/0x130
[  479.607954]  start_cpu+0x14/0x14
[  479.611708] BUG: Bad page state in process swapper/3  pfn:1171ca
[  479.611709] page:ffffea00045c7280 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.611710] flags: 0x17ffffc0000000()
[  479.611711] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.611712] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.611712] page dumped because: nonzero _count
[  479.611712] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.611727] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.611728] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.611728] Call Trace:
[  479.611729]  <IRQ>
[  479.611730]  dump_stack+0x63/0x8a
[  479.611732]  bad_page+0xc4/0x130
[  479.611733]  check_new_page_bad+0x67/0x80
[  479.611735]  get_page_from_freelist+0x448/0xca0
[  479.611737]  __alloc_pages_nodemask+0xd0/0x240
[  479.611738]  page_frag_alloc+0xc0/0x1a0
[  479.611740]  __napi_alloc_skb+0x8e/0xf0
[  479.611742]  rtl8169_poll+0x1dd/0x640
[  479.611743]  net_rx_action+0x23c/0x3f0
[  479.611744]  ? rtl8169_interrupt+0x6b/0x70
[  479.611745]  __do_softirq+0x104/0x2cb
[  479.611747]  irq_exit+0xf1/0x100
[  479.611750]  do_IRQ+0x4f/0xd0
[  479.611751]  common_interrupt+0x93/0x93
[  479.611752] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.611753] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.611754] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.611754] RDX: 0000006fab15558c RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.611755] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018
[  479.611755] R10: ffffc900006bbe48 R11: 0000000000000236 R12: ffff88011fba4500
[  479.611756] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.611756]  </IRQ>
[  479.611758]  ? cpuidle_enter_state+0x110/0x2e0
[  479.611759]  cpuidle_enter+0x17/0x20
[  479.611761]  call_cpuidle+0x23/0x40
[  479.611761]  do_idle+0x189/0x200
[  479.611762]  cpu_startup_entry+0x1d/0x20
[  479.611764]  start_secondary+0x107/0x130
[  479.611765]  start_cpu+0x14/0x14
[  479.612535] BUG: Bad page state in process swapper/3  pfn:117a15
[  479.612535] page:ffffea00045e8540 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.612536] flags: 0x17ffffc0000000()
[  479.612537] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.612538] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.612539] page dumped because: nonzero _count
[  479.612539] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.612553] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.612553] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.612554] Call Trace:
[  479.612554]  <IRQ>
[  479.612556]  dump_stack+0x63/0x8a
[  479.612557]  bad_page+0xc4/0x130
[  479.612558]  check_new_page_bad+0x67/0x80
[  479.612560]  get_page_from_freelist+0x448/0xca0
[  479.612562]  ? tcp_gro_receive+0x259/0x310
[  479.612563]  __alloc_pages_nodemask+0xd0/0x240
[  479.612565]  page_frag_alloc+0xc0/0x1a0
[  479.612567]  __napi_alloc_skb+0x8e/0xf0
[  479.612568]  rtl8169_poll+0x1dd/0x640
[  479.612569]  net_rx_action+0x23c/0x3f0
[  479.612570]  ? rtl8169_interrupt+0x6b/0x70
[  479.612571]  __do_softirq+0x104/0x2cb
[  479.612574]  irq_exit+0xf1/0x100
[  479.612575]  do_IRQ+0x4f/0xd0
[  479.612577]  common_interrupt+0x93/0x93
[  479.612578] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.612578] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.612579] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.612580] RDX: 0000006fab21ea9e RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.612580] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018
[  479.612581] R10: ffffc900006bbe48 R11: 000000000000025e R12: ffff88011fba4500
[  479.612581] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.612582]  </IRQ>
[  479.612583]  ? cpuidle_enter_state+0x110/0x2e0
[  479.612584]  cpuidle_enter+0x17/0x20
[  479.612586]  call_cpuidle+0x23/0x40
[  479.612587]  do_idle+0x189/0x200
[  479.612587]  cpu_startup_entry+0x1d/0x20
[  479.612589]  start_secondary+0x107/0x130
[  479.612590]  start_cpu+0x14/0x14
[  479.613358] BUG: Bad page state in process swapper/3  pfn:11721a
[  479.613359] page:ffffea00045c8680 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.613359] flags: 0x17ffffc0000000()
[  479.613361] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.613362] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.613362] page dumped because: nonzero _count
[  479.613362] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.613376] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.613377] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.613377] Call Trace:
[  479.613378]  <IRQ>
[  479.613379]  dump_stack+0x63/0x8a
[  479.613381]  bad_page+0xc4/0x130
[  479.613382]  check_new_page_bad+0x67/0x80
[  479.613383]  get_page_from_freelist+0x448/0xca0
[  479.613385]  ? tcp_gro_receive+0x259/0x310
[  479.613387]  __alloc_pages_nodemask+0xd0/0x240
[  479.613388]  page_frag_alloc+0xc0/0x1a0
[  479.613390]  __napi_alloc_skb+0x8e/0xf0
[  479.613391]  rtl8169_poll+0x1dd/0x640
[  479.613392]  net_rx_action+0x23c/0x3f0
[  479.613393]  ? rtl8169_interrupt+0x6b/0x70
[  479.613395]  __do_softirq+0x104/0x2cb
[  479.613396]  irq_exit+0xf1/0x100
[  479.613398]  do_IRQ+0x4f/0xd0
[  479.613399]  common_interrupt+0x93/0x93
[  479.613401] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.613401] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.613402] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.613402] RDX: 0000006fab2e84df RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.613403] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018
[  479.613403] R10: ffffc900006bbe48 R11: 000000000000025e R12: ffff88011fba4500
[  479.613404] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.613404]  </IRQ>
[  479.613406]  ? cpuidle_enter_state+0x110/0x2e0
[  479.613407]  cpuidle_enter+0x17/0x20
[  479.613409]  call_cpuidle+0x23/0x40
[  479.613409]  do_idle+0x189/0x200
[  479.613410]  cpu_startup_entry+0x1d/0x20
[  479.613412]  start_secondary+0x107/0x130
[  479.613413]  start_cpu+0x14/0x14
[  479.614172] BUG: Bad page state in process swapper/3  pfn:11b3b5
[  479.614173] page:ffffea00046ced40 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.614174] flags: 0x17ffffc0000000()
[  479.614174] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.614175] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.614176] page dumped because: nonzero _count
[  479.614176] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.614190] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.614190] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.614191] Call Trace:
[  479.614191]  <IRQ>
[  479.614193]  dump_stack+0x63/0x8a
[  479.614194]  bad_page+0xc4/0x130
[  479.614195]  check_new_page_bad+0x67/0x80
[  479.614197]  get_page_from_freelist+0x448/0xca0
[  479.614198]  ? tcp_gro_receive+0x259/0x310
[  479.614200]  __alloc_pages_nodemask+0xd0/0x240
[  479.614201]  page_frag_alloc+0xc0/0x1a0
[  479.614203]  __napi_alloc_skb+0x8e/0xf0
[  479.614204]  rtl8169_poll+0x1dd/0x640
[  479.614206]  net_rx_action+0x23c/0x3f0
[  479.614206]  ? rtl8169_interrupt+0x6b/0x70
[  479.614208]  __do_softirq+0x104/0x2cb
[  479.614209]  irq_exit+0xf1/0x100
[  479.614211]  do_IRQ+0x4f/0xd0
[  479.614212]  common_interrupt+0x93/0x93
[  479.614214] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.614214] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.614215] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.614215] RDX: 0000006fab3b1327 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.614216] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018
[  479.614216] R10: ffffc900006bbe48 R11: 000000000000025e R12: ffff88011fba4500
[  479.614217] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.614217]  </IRQ>
[  479.614219]  ? cpuidle_enter_state+0x110/0x2e0
[  479.614220]  cpuidle_enter+0x17/0x20
[  479.614221]  call_cpuidle+0x23/0x40
[  479.614222]  do_idle+0x189/0x200
[  479.614223]  cpu_startup_entry+0x1d/0x20
[  479.614225]  start_secondary+0x107/0x130
[  479.614226]  start_cpu+0x14/0x14
[  479.615817] BUG: Bad page state in process swapper/3  pfn:116506
[  479.615818] page:ffffea0004594180 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.615819] flags: 0x17ffffc0000000()
[  479.615820] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.615821] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.615821] page dumped because: nonzero _count
[  479.615821] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.615835] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.615835] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.615836] Call Trace:
[  479.615836]  <IRQ>
[  479.615838]  dump_stack+0x63/0x8a
[  479.615839]  bad_page+0xc4/0x130
[  479.615841]  check_new_page_bad+0x67/0x80
[  479.615842]  get_page_from_freelist+0x448/0xca0
[  479.615844]  ? tcp_gro_receive+0x259/0x310
[  479.615845]  __alloc_pages_nodemask+0xd0/0x240
[  479.615847]  page_frag_alloc+0xc0/0x1a0
[  479.615849]  __napi_alloc_skb+0x8e/0xf0
[  479.615850]  rtl8169_poll+0x1dd/0x640
[  479.615851]  net_rx_action+0x23c/0x3f0
[  479.615852]  ? rtl8169_interrupt+0x6b/0x70
[  479.615853]  __do_softirq+0x104/0x2cb
[  479.615855]  irq_exit+0xf1/0x100
[  479.615857]  do_IRQ+0x4f/0xd0
[  479.615858]  common_interrupt+0x93/0x93
[  479.615859] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.615860] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.615861] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.615861] RDX: 0000006fab543d4b RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.615862] RBP: ffffc900006bbeb8 R08: 000000000000025d R09: 0000000000000018
[  479.615862] R10: ffffc900006bbe48 R11: 0000000000000235 R12: ffff88011fba4500
[  479.615863] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.615863]  </IRQ>
[  479.615865]  ? cpuidle_enter_state+0x110/0x2e0
[  479.615866]  cpuidle_enter+0x17/0x20
[  479.615867]  call_cpuidle+0x23/0x40
[  479.615868]  do_idle+0x189/0x200
[  479.615869]  cpu_startup_entry+0x1d/0x20
[  479.615871]  start_secondary+0x107/0x130
[  479.615871]  start_cpu+0x14/0x14
[  479.615889] BUG: Bad page state in process swapper/3  pfn:11b0ea
[  479.615890] page:ffffea00046c3a80 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.615891] flags: 0x17ffffc0000000()
[  479.615891] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.615892] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.615893] page dumped because: nonzero _count
[  479.615893] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.615905] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.615905] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.615906] Call Trace:
[  479.615906]  <IRQ>
[  479.615907]  dump_stack+0x63/0x8a
[  479.615909]  bad_page+0xc4/0x130
[  479.615910]  check_new_page_bad+0x67/0x80
[  479.615911]  get_page_from_freelist+0x448/0xca0
[  479.615913]  ? tcp_gro_receive+0x259/0x310
[  479.615914]  __alloc_pages_nodemask+0xd0/0x240
[  479.615916]  page_frag_alloc+0xc0/0x1a0
[  479.615917]  __napi_alloc_skb+0x8e/0xf0
[  479.615919]  rtl8169_poll+0x1dd/0x640
[  479.615920]  net_rx_action+0x23c/0x3f0
[  479.615920]  ? rtl8169_interrupt+0x6b/0x70
[  479.615922]  __do_softirq+0x104/0x2cb
[  479.615924]  irq_exit+0xf1/0x100
[  479.615925]  do_IRQ+0x4f/0xd0
[  479.615927]  common_interrupt+0x93/0x93
[  479.615928] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.615928] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.615929] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.615929] RDX: 0000006fab543d4b RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.615930] RBP: ffffc900006bbeb8 R08: 000000000000025d R09: 0000000000000018
[  479.615930] R10: ffffc900006bbe48 R11: 0000000000000235 R12: ffff88011fba4500
[  479.615931] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.615931]  </IRQ>
[  479.615933]  ? cpuidle_enter_state+0x110/0x2e0
[  479.615934]  cpuidle_enter+0x17/0x20
[  479.615935]  call_cpuidle+0x23/0x40
[  479.615936]  do_idle+0x189/0x200
[  479.615937]  cpu_startup_entry+0x1d/0x20
[  479.615938]  start_secondary+0x107/0x130
[  479.615939]  start_cpu+0x14/0x14
[  479.617485] BUG: Bad page state in process swapper/3  pfn:116f7b
[  479.617486] page:ffffea00045bdec0 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.617487] flags: 0x17ffffc0000000()
[  479.617488] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.617489] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.617489] page dumped because: nonzero _count
[  479.617489] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.617503] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.617503] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.617503] Call Trace:
[  479.617504]  <IRQ>
[  479.617507]  dump_stack+0x63/0x8a
[  479.617508]  bad_page+0xc4/0x130
[  479.617509]  check_new_page_bad+0x67/0x80
[  479.617511]  get_page_from_freelist+0x448/0xca0
[  479.617513]  ? tcp_gro_receive+0x259/0x310
[  479.617514]  __alloc_pages_nodemask+0xd0/0x240
[  479.617516]  page_frag_alloc+0xc0/0x1a0
[  479.617517]  __napi_alloc_skb+0x8e/0xf0
[  479.617518]  rtl8169_poll+0x1dd/0x640
[  479.617520]  net_rx_action+0x23c/0x3f0
[  479.617520]  ? rtl8169_interrupt+0x6b/0x70
[  479.617522]  __do_softirq+0x104/0x2cb
[  479.617523]  irq_exit+0xf1/0x100
[  479.617525]  do_IRQ+0x4f/0xd0
[  479.617526]  common_interrupt+0x93/0x93
[  479.617528] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.617528] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.617529] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.617529] RDX: 0000006fab6d65e4 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.617530] RBP: ffffc900006bbeb8 R08: 000000000000025a R09: 0000000000000018
[  479.617531] R10: ffffc900006bbe48 R11: 0000000000000235 R12: ffff88011fba4500
[  479.617531] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.617531]  </IRQ>
[  479.617533]  ? cpuidle_enter_state+0x110/0x2e0
[  479.617534]  cpuidle_enter+0x17/0x20
[  479.617536]  call_cpuidle+0x23/0x40
[  479.617536]  do_idle+0x189/0x200
[  479.617537]  cpu_startup_entry+0x1d/0x20
[  479.617539]  start_secondary+0x107/0x130
[  479.617540]  start_cpu+0x14/0x14
[  479.618280] BUG: Bad page state in process swapper/3  pfn:116411
[  479.618281] page:ffffea0004590440 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.618281] flags: 0x17ffffc0000000()
[  479.618282] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.618283] raw: 0000000000000000 0000000300000001 0000000000000000 0000000000000000
[  479.618284] page dumped because: nonzero _count
[  479.618284] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.618297] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.618298] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.618298] Call Trace:
[  479.618300]  <IRQ>
[  479.618302]  dump_stack+0x63/0x8a
[  479.618303]  bad_page+0xc4/0x130
[  479.618304]  check_new_page_bad+0x67/0x80
[  479.618306]  get_page_from_freelist+0x448/0xca0
[  479.618307]  ? tcp_gro_receive+0x259/0x310
[  479.618309]  __alloc_pages_nodemask+0xd0/0x240
[  479.618310]  page_frag_alloc+0xc0/0x1a0
[  479.618312]  __napi_alloc_skb+0x8e/0xf0
[  479.618313]  rtl8169_poll+0x1dd/0x640
[  479.618315]  net_rx_action+0x23c/0x3f0
[  479.618315]  ? rtl8169_interrupt+0x6b/0x70
[  479.618317]  __do_softirq+0x104/0x2cb
[  479.618318]  irq_exit+0xf1/0x100
[  479.618320]  do_IRQ+0x4f/0xd0
[  479.618321]  common_interrupt+0x93/0x93
[  479.618322] RIP: 0010:cpuidle_enter_state+0x122/0x2e0
[  479.618323] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e
[  479.618324] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f
[  479.618324] RDX: 0000006fab79fde5 RSI: ffff88011fb98a98 RDI: 0000000000000000
[  479.618325] RBP: ffffc900006bbeb8 R08: 00000000ffffffff R09: 0000000000000008
[  479.618325] R10: ffffc900006bbe48 R11: 000000000000026e R12: ffff88011fba4500
[  479.618326] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520
[  479.618326]  </IRQ>
[  479.618328]  ? cpuidle_enter_state+0x110/0x2e0
[  479.618329]  cpuidle_enter+0x17/0x20
[  479.618331]  call_cpuidle+0x23/0x40
[  479.618331]  do_idle+0x189/0x200
[  479.618332]  cpu_startup_entry+0x1d/0x20
[  479.618334]  start_secondary+0x107/0x130
[  479.618335]  start_cpu+0x14/0x14
[  479.620004] BUG: Bad page state in process ksoftirqd/1  pfn:116688
[  479.620005] page:ffffea000459a200 count:-45 mapcount:0 mapping:          (null) index:0x0
[  479.620006] flags: 0x17ffffc0000000()
[  479.620007] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffd3ffffffff
[  479.620008] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
[  479.620009] page dumped because: nonzero _count
[  479.620009] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.620025] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.620025] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.620025] Call Trace:
[  479.620028]  dump_stack+0x63/0x8a
[  479.620029]  bad_page+0xc4/0x130
[  479.620031]  check_new_page_bad+0x67/0x80
[  479.620033]  get_page_from_freelist+0x46c/0xca0
[  479.620035]  ? tcp_gro_receive+0x259/0x310
[  479.620037]  __alloc_pages_nodemask+0xd0/0x240
[  479.620039]  page_frag_alloc+0xc0/0x1a0
[  479.620041]  __napi_alloc_skb+0x8e/0xf0
[  479.620043]  rtl8169_poll+0x1dd/0x640
[  479.620045]  net_rx_action+0x23c/0x3f0
[  479.620046]  ? pick_next_task_fair+0x312/0x520
[  479.620048]  __do_softirq+0x104/0x2cb
[  479.620050]  ? smpboot_thread_fn+0x34/0x1f0
[  479.620052]  ? smpboot_thread_fn+0x12d/0x1f0
[  479.620053]  run_ksoftirqd+0x29/0x70
[  479.620055]  smpboot_thread_fn+0x128/0x1f0
[  479.620056]  kthread+0x114/0x150
[  479.620058]  ? sort_range+0x30/0x30
[  479.620059]  ? kthread_create_on_node+0x40/0x40
[  479.620060]  ret_from_fork+0x2c/0x40
[  479.620062] BUG: Bad page state in process ksoftirqd/1  pfn:1178f0
[  479.620063] page:ffffea00045e3c00 count:-65162 mapcount:0 mapping:          (null) index:0x0
[  479.620063] flags: 0x17ffffc0000000()
[  479.620065] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffff00f8ffffffff
[  479.620066] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
[  479.620066] page dumped because: nonzero _count
[  479.620067] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.620082] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.620082] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.620082] Call Trace:
[  479.620084]  dump_stack+0x63/0x8a
[  479.620086]  bad_page+0xc4/0x130
[  479.620087]  check_new_page_bad+0x67/0x80
[  479.620089]  get_page_from_freelist+0x46c/0xca0
[  479.620091]  ? tcp_gro_receive+0x259/0x310
[  479.620093]  __alloc_pages_nodemask+0xd0/0x240
[  479.620095]  page_frag_alloc+0xc0/0x1a0
[  479.620097]  __napi_alloc_skb+0x8e/0xf0
[  479.620098]  rtl8169_poll+0x1dd/0x640
[  479.620100]  net_rx_action+0x23c/0x3f0
[  479.620101]  ? pick_next_task_fair+0x312/0x520
[  479.620103]  __do_softirq+0x104/0x2cb
[  479.620105]  ? smpboot_thread_fn+0x34/0x1f0
[  479.620106]  ? smpboot_thread_fn+0x12d/0x1f0
[  479.620108]  run_ksoftirqd+0x29/0x70
[  479.620109]  smpboot_thread_fn+0x128/0x1f0
[  479.620111]  kthread+0x114/0x150
[  479.620112]  ? sort_range+0x30/0x30
[  479.620113]  ? kthread_create_on_node+0x40/0x40
[  479.620115]  ret_from_fork+0x2c/0x40
[  479.623011] BUG: Bad page state in process ksoftirqd/1  pfn:117a50
[  479.623012] page:ffffea00045e9400 count:-72723 mapcount:0 mapping:          (null) index:0x0
[  479.623013] flags: 0x17ffffc0000000()
[  479.623014] raw: 0017ffffc0000000 0000000000000000 0000000000000000 fffee3b3ffffffff
[  479.623015] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
[  479.623016] page dumped because: nonzero _count
[  479.623016] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.623031] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.623031] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.623032] Call Trace:
[  479.623034]  dump_stack+0x63/0x8a
[  479.623035]  bad_page+0xc4/0x130
[  479.623037]  check_new_page_bad+0x67/0x80
[  479.623038]  get_page_from_freelist+0x46c/0xca0
[  479.623040]  ? tcp_gro_receive+0x259/0x310
[  479.623042]  __alloc_pages_nodemask+0xd0/0x240
[  479.623044]  page_frag_alloc+0xc0/0x1a0
[  479.623046]  __napi_alloc_skb+0x8e/0xf0
[  479.623047]  rtl8169_poll+0x1dd/0x640
[  479.623049]  net_rx_action+0x23c/0x3f0
[  479.623050]  ? pick_next_task_fair+0x4c5/0x520
[  479.623052]  __do_softirq+0x104/0x2cb
[  479.623053]  ? smpboot_thread_fn+0x34/0x1f0
[  479.623055]  ? smpboot_thread_fn+0x12d/0x1f0
[  479.623056]  run_ksoftirqd+0x29/0x70
[  479.623058]  smpboot_thread_fn+0x128/0x1f0
[  479.623059]  kthread+0x114/0x150
[  479.623060]  ? sort_range+0x30/0x30
[  479.623061]  ? kthread_create_on_node+0x40/0x40
[  479.623063]  ret_from_fork+0x2c/0x40
[  479.623064] BUG: Bad page state in process ksoftirqd/1  pfn:1166a4
[  479.623065] page:ffffea000459a900 count:-1 mapcount:0 mapping:          (null) index:0x0
[  479.623066] flags: 0x17ffffc0000000()
[  479.623067] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff
[  479.623068] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[  479.623068] page dumped because: nonzero _count
[  479.623069] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  479.623082] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  479.623083] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  479.623083] Call Trace:
[  479.623084]  dump_stack+0x63/0x8a
[  479.623086]  bad_page+0xc4/0x130
[  479.623087]  check_new_page_bad+0x67/0x80
[  479.623089]  get_page_from_freelist+0x448/0xca0
[  479.623091]  ? tcp_gro_receive+0x259/0x310
[  479.623092]  __alloc_pages_nodemask+0xd0/0x240
[  479.623094]  page_frag_alloc+0xc0/0x1a0
[  479.623096]  __napi_alloc_skb+0x8e/0xf0
[  479.623097]  rtl8169_poll+0x1dd/0x640
[  479.623099]  net_rx_action+0x23c/0x3f0
[  479.623100]  ? pick_next_task_fair+0x4c5/0x520
[  479.623101]  __do_softirq+0x104/0x2cb
[  479.623103]  ? smpboot_thread_fn+0x34/0x1f0
[  479.623104]  ? smpboot_thread_fn+0x12d/0x1f0
[  479.623106]  run_ksoftirqd+0x29/0x70
[  479.623107]  smpboot_thread_fn+0x128/0x1f0
[  479.623109]  kthread+0x114/0x150
[  479.623110]  ? sort_range+0x30/0x30
[  479.623111]  ? kthread_create_on_node+0x40/0x40
[  479.623113]  ret_from_fork+0x2c/0x40
[  507.274837] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [curl:6596]
[  507.282650] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables
[  507.331983] CPU: 3 PID: 6596 Comm: curl Tainted: G    B           4.11.0-rc6-01591-g95510ae #1
[  507.341396] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  507.349933] task: ffff880100f3cb80 task.stack: ffffc90009f0c000
[  507.356591] RIP: 0010:skb_release_all+0x0/0x30
[  507.361790] RSP: 0018:ffffc90009f0fb90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
[  507.370146] RAX: 0000000000000001 RBX: ffff88011671bc00 RCX: 000000000e9d01da
[  507.378058] RDX: 000000000e9d01d9 RSI: ffff88011fb9e780 RDI: ffff88011671be00
[  507.385962] RBP: ffffc90009f0fbb0 R08: 000000000001e780 R09: ffffffff81854469
[  507.393900] R10: ffffea0004594c00 R11: ffff880100f3cb80 R12: ffff88011671be00
[  507.401840] R13: ffffffff81856a07 R14: ffff88011668f740 R15: ffff88011c203b44
[  507.409778] FS:  00007f21439d5c00(0000) GS:ffff88011fb80000(0000) knlGS:0000000000000000
[  507.418742] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  507.425293] CR2: 000055c5d2c00488 CR3: 0000000116024000 CR4: 00000000001406e0
[  507.433206] Call Trace:
[  507.436432]  ? kfree_skb+0x32/0xa0
[  507.440550]  kfree_skb_list+0x17/0x30
[  507.444942]  skb_release_data+0xfc/0x110
[  507.449578]  ? kfree_skb_list+0x17/0x30
[  507.454059]  skb_release_all+0x24/0x30
[  507.458480]  kfree_skb+0x32/0xa0
[  507.462370]  kfree_skb_list+0x17/0x30
[  507.466695]  skb_release_data+0xfc/0x110
[  507.471245]  ? kfree_skb_list+0x17/0x30
[  507.475745]  skb_release_all+0x24/0x30
[  507.480138]  kfree_skb+0x32/0xa0
[  507.484048]  kfree_skb_list+0x17/0x30
[  507.488362]  skb_release_data+0xfc/0x110
[  507.492915]  skb_release_all+0x24/0x30
[  507.497283]  __kfree_skb+0x12/0x20
[  507.501348]  tcp_recvmsg+0x2ca/0xb20
[  507.505569]  inet_recvmsg+0x3c/0xa0
[  507.509676]  sock_recvmsg+0x3d/0x50
[  507.513810]  SYSC_recvfrom+0xd5/0x140
[  507.518084]  ? ktime_get_ts64+0x4f/0x100
[  507.522626]  SyS_recvfrom+0xe/0x10
[  507.526638]  entry_SYSCALL_64_fastpath+0x1a/0xa9
[  507.531914] RIP: 0033:0x7f214312553f
[  507.536135] RSP: 002b:00007ffcfa06e220 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
[  507.544403] RAX: ffffffffffffffda RBX: 00007f214310fb58 RCX: 00007f214312553f
[  507.552334] RDX: 0000000000004000 RSI: 000055c5d2be8ce0 RDI: 0000000000000003
[  507.560133] RBP: 0000000000002705 R08: 0000000000000000 R09: 0000000000000000
[  507.567962] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f214310fb58
[  507.575786] R13: 0000000000001010 R14: 000055c5d2bff470 R15: 00007f214310fb00
[  507.583563] Code: 74 07 be 01 00 00 00 ff d0 49 8b 7e 08 48 85 ff 74 05 e8 04 01 00 00 4c 89 e7 e8 fc dd ff ff 5b 41 5c 41 5d 41 5e 5d c3 0f 1f 00 <0f> 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 3e dd ff ff 48 83 bb 
[  507.603930] Kernel panic - not syncing: softlockup: hung tasks
[  507.610447] CPU: 3 PID: 6596 Comm: curl Tainted: G    B        L  4.11.0-rc6-01591-g95510ae #1
[  507.619765] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[  507.628178] Call Trace:
[  507.631211]  <IRQ>
[  507.633833]  dump_stack+0x63/0x8a
[  507.637725]  panic+0xd5/0x21e
[  507.641304]  watchdog_timer_fn+0x216/0x220
[  507.645974]  ? watchdog_park_threads+0x70/0x70
[  507.651088]  __hrtimer_run_queues+0xdd/0x250
[  507.655925]  hrtimer_interrupt+0xa3/0x1f0
[  507.660492]  ? kfree_skb_list+0x17/0x30
[  507.664939]  local_apic_timer_interrupt+0x38/0x60
[  507.670198]  smp_apic_timer_interrupt+0x38/0x50
[  507.675296]  apic_timer_interrupt+0x93/0xa0
[  507.680044] RIP: 0010:skb_release_all+0x0/0x30
[  507.685001] RSP: 0018:ffffc90009f0fb90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
[  507.693198] RAX: 0000000000000001 RBX: ffff88011671bc00 RCX: 000000000e9d01da
[  507.700923] RDX: 000000000e9d01d9 RSI: ffff88011fb9e780 RDI: ffff88011671be00
[  507.708680] RBP: ffffc90009f0fbb0 R08: 000000000001e780 R09: ffffffff81854469
[  507.716498] R10: ffffea0004594c00 R11: ffff880100f3cb80 R12: ffff88011671be00
[  507.724254] R13: ffffffff81856a07 R14: ffff88011668f740 R15: ffff88011c203b44
[  507.731994]  </IRQ>
[  507.734647]  ? kfree_skb_list+0x17/0x30
[  507.739128]  ? kfree_skbmem+0x59/0x60
[  507.743367]  ? kfree_skb+0x32/0xa0
[  507.747344]  kfree_skb_list+0x17/0x30
[  507.751615]  skb_release_data+0xfc/0x110
[  507.756115]  ? kfree_skb_list+0x17/0x30
[  507.760553]  skb_release_all+0x24/0x30
[  507.764893]  kfree_skb+0x32/0xa0
[  507.768709]  kfree_skb_list+0x17/0x30
[  507.772945]  skb_release_data+0xfc/0x110
[  507.777461]  ? kfree_skb_list+0x17/0x30
[  507.781890]  skb_release_all+0x24/0x30
[  507.786242]  kfree_skb+0x32/0xa0
[  507.790044]  kfree_skb_list+0x17/0x30
[  507.794354]  skb_release_data+0xfc/0x110
[  507.798879]  skb_release_all+0x24/0x30
[  507.803227]  __kfree_skb+0x12/0x20
[  507.807215]  tcp_recvmsg+0x2ca/0xb20
[  507.811359]  inet_recvmsg+0x3c/0xa0
[  507.815397]  sock_recvmsg+0x3d/0x50
[  507.819452]  SYSC_recvfrom+0xd5/0x140
[  507.823656]  ? ktime_get_ts64+0x4f/0x100
[  507.828130]  SyS_recvfrom+0xe/0x10
[  507.832106]  entry_SYSCALL_64_fastpath+0x1a/0xa9
[  507.837280] RIP: 0033:0x7f214312553f
[  507.841354] RSP: 002b:00007ffcfa06e220 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
[  507.849440] RAX: ffffffffffffffda RBX: 00007f214310fb58 RCX: 00007f214312553f
[  507.857101] RDX: 0000000000004000 RSI: 000055c5d2be8ce0 RDI: 0000000000000003
[  507.864817] RBP: 0000000000002705 R08: 0000000000000000 R09: 0000000000000000
[  507.872494] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f214310fb58
[  507.880139] R13: 0000000000001010 R14: 000055c5d2bff470 R15: 00007f214310fb00
[  507.887799] Kernel Offset: disabled


To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Kernel Test Robot

[-- Attachment #2: config-4.11.0-rc6-01591-g95510ae --]
[-- Type: text/plain, Size: 158144 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/x86_64 4.11.0-rc6 Kernel Configuration
#
CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=28
CONFIG_ARCH_MMAP_RND_BITS_MAX=32
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ZONE_DMA32=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_HAVE_INTEL_TXT=y
CONFIG_X86_64_SMP=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_PGTABLE_LEVELS=4
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
CONFIG_CROSS_MEMORY_ATTACH=y
CONFIG_FHANDLE=y
CONFIG_USELIB=y
CONFIG_AUDIT=y
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_WATCH=y
CONFIG_AUDIT_TREE=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_GENERIC_MSI_IRQ=y
CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
# CONFIG_IRQ_DOMAIN_DEBUG is not set
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y

#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
# CONFIG_NO_HZ_IDLE is not set
CONFIG_NO_HZ_FULL=y
# CONFIG_NO_HZ_FULL_ALL is not set
# CONFIG_NO_HZ_FULL_SYSIDLE is not set
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y

#
# CPU/Task time and stats accounting
#
CONFIG_VIRT_CPU_ACCOUNTING=y
CONFIG_VIRT_CPU_ACCOUNTING_GEN=y
# CONFIG_IRQ_TIME_ACCOUNTING is not set
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TASKS_RCU=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_CONTEXT_TRACKING=y
# CONFIG_CONTEXT_TRACKING_FORCE is not set
# CONFIG_TREE_RCU_TRACE is not set
CONFIG_RCU_NOCB_CPU=y
# CONFIG_RCU_NOCB_CPU_NONE is not set
# CONFIG_RCU_NOCB_CPU_ZERO is not set
CONFIG_RCU_NOCB_CPU_ALL=y
CONFIG_BUILD_BIN2C=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=19
CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
CONFIG_ARCH_SUPPORTS_INT128=y
CONFIG_NUMA_BALANCING=y
CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y
CONFIG_CGROUPS=y
CONFIG_PAGE_COUNTER=y
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
CONFIG_MEMCG_SWAP_ENABLED=y
CONFIG_BLK_CGROUP=y
# CONFIG_DEBUG_BLK_CGROUP is not set
CONFIG_CGROUP_WRITEBACK=y
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
CONFIG_CFS_BANDWIDTH=y
CONFIG_RT_GROUP_SCHED=y
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_RDMA is not set
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_HUGETLB=y
CONFIG_CPUSETS=y
CONFIG_PROC_PID_CPUSET=y
CONFIG_CGROUP_DEVICE=y
# CONFIG_CGROUP_CPUACCT is not set
CONFIG_CGROUP_PERF=y
# CONFIG_CGROUP_BPF is not set
# CONFIG_CGROUP_DEBUG is not set
CONFIG_SOCK_CGROUP_DATA=y
CONFIG_CHECKPOINT_RESTORE=y
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_NET_NS=y
CONFIG_SCHED_AUTOGROUP=y
# CONFIG_SYSFS_DEPRECATED is not set
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_XZ=y
CONFIG_RD_LZO=y
CONFIG_RD_LZ4=y
CONFIG_INITRAMFS_COMPRESSION=".gz"
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_HAVE_UID16=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_BPF=y
CONFIG_EXPERT=y
CONFIG_UID16=y
CONFIG_MULTIUSER=y
CONFIG_SGETMASK_SYSCALL=y
CONFIG_SYSFS_SYSCALL=y
# CONFIG_SYSCTL_SYSCALL is not set
CONFIG_POSIX_TIMERS=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_KALLSYMS_ABSOLUTE_PERCPU=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
CONFIG_PRINTK=y
CONFIG_PRINTK_NMI=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_BPF_SYSCALL=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_USERFAULTFD=y
CONFIG_PCI_QUIRKS=y
CONFIG_MEMBARRIER=y
CONFIG_EMBEDDED=y
CONFIG_HAVE_PERF_EVENTS=y
# CONFIG_PC104 is not set

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_MEMCG_SYSFS_ON is not set
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
# CONFIG_SLAB_FREELIST_RANDOM is not set
CONFIG_SLUB_CPU_PARTIAL=y
# CONFIG_SYSTEM_DATA_VERIFICATION is not set
CONFIG_PROFILING=y
CONFIG_TRACEPOINTS=y
CONFIG_KEXEC_CORE=y
CONFIG_OPROFILE=m
CONFIG_OPROFILE_EVENT_MULTIPLEX=y
CONFIG_HAVE_OPROFILE=y
CONFIG_OPROFILE_NMI_TIMER=y
CONFIG_KPROBES=y
CONFIG_JUMP_LABEL=y
# CONFIG_STATIC_KEYS_SELFTEST is not set
CONFIG_OPTPROBES=y
CONFIG_KPROBES_ON_FTRACE=y
# CONFIG_UPROBES is not set
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_KRETPROBES=y
CONFIG_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_HAVE_NMI=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP_FILTER=y
CONFIG_HAVE_GCC_PLUGINS=y
# CONFIG_GCC_PLUGINS is not set
CONFIG_HAVE_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR is not set
CONFIG_CC_STACKPROTECTOR_NONE=y
# CONFIG_CC_STACKPROTECTOR_REGULAR is not set
# CONFIG_CC_STACKPROTECTOR_STRONG is not set
CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=28
CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
CONFIG_HAVE_COPY_THREAD_TLS=y
CONFIG_HAVE_STACK_VALIDATION=y
# CONFIG_HAVE_ARCH_HASH is not set
# CONFIG_ISA_BUS_API is not set
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_COMPAT_OLD_SIGACTION=y
# CONFIG_CPU_NO_EFFICIENT_FFS is not set
CONFIG_HAVE_ARCH_VMAP_STACK=y
CONFIG_VMAP_STACK=y
# CONFIG_ARCH_OPTIONAL_KERNEL_RWX is not set
# CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT is not set
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
CONFIG_STRICT_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
CONFIG_STRICT_MODULE_RWX=y

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
# CONFIG_MODULE_COMPRESS is not set
# CONFIG_TRIM_UNUSED_KSYMS is not set
CONFIG_MODULES_TREE_LOOKUP=y
CONFIG_BLOCK=y
CONFIG_BLK_SCSI_REQUEST=y
CONFIG_BLK_DEV_BSG=y
CONFIG_BLK_DEV_BSGLIB=y
CONFIG_BLK_DEV_INTEGRITY=y
# CONFIG_BLK_DEV_ZONED is not set
CONFIG_BLK_DEV_THROTTLING=y
# CONFIG_BLK_CMDLINE_PARSER is not set
# CONFIG_BLK_WBT is not set
CONFIG_BLK_DEBUG_FS=y
# CONFIG_BLK_SED_OPAL is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_AIX_PARTITION is not set
CONFIG_OSF_PARTITION=y
CONFIG_AMIGA_PARTITION=y
# CONFIG_ATARI_PARTITION is not set
CONFIG_MAC_PARTITION=y
CONFIG_MSDOS_PARTITION=y
CONFIG_BSD_DISKLABEL=y
CONFIG_MINIX_SUBPARTITION=y
CONFIG_SOLARIS_X86_PARTITION=y
CONFIG_UNIXWARE_DISKLABEL=y
# CONFIG_LDM_PARTITION is not set
CONFIG_SGI_PARTITION=y
# CONFIG_ULTRIX_PARTITION is not set
CONFIG_SUN_PARTITION=y
CONFIG_KARMA_PARTITION=y
CONFIG_EFI_PARTITION=y
# CONFIG_SYSV68_PARTITION is not set
# CONFIG_CMDLINE_PARTITION is not set
CONFIG_BLOCK_COMPAT=y
CONFIG_BLK_MQ_PCI=y
CONFIG_BLK_MQ_VIRTIO=y

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_DEFAULT_DEADLINE=y
# CONFIG_DEFAULT_CFQ is not set
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="deadline"
CONFIG_MQ_IOSCHED_DEADLINE=y
CONFIG_PREEMPT_NOTIFIERS=y
CONFIG_PADATA=y
CONFIG_ASN1=y
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_QUEUED_RWLOCKS=y
CONFIG_FREEZER=y

#
# Processor type and features
#
CONFIG_ZONE_DMA=y
CONFIG_SMP=y
CONFIG_X86_FEATURE_NAMES=y
CONFIG_X86_FAST_FEATURE_TESTS=y
CONFIG_X86_X2APIC=y
CONFIG_X86_MPPARSE=y
# CONFIG_GOLDFISH is not set
CONFIG_INTEL_RDT_A=y
CONFIG_X86_EXTENDED_PLATFORM=y
# CONFIG_X86_NUMACHIP is not set
# CONFIG_X86_VSMP is not set
CONFIG_X86_UV=y
# CONFIG_X86_GOLDFISH is not set
# CONFIG_X86_INTEL_MID is not set
CONFIG_X86_INTEL_LPSS=y
# CONFIG_X86_AMD_PLATFORM_DEVICE is not set
CONFIG_IOSF_MBI=y
# CONFIG_IOSF_MBI_DEBUG is not set
CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
# CONFIG_SCHED_OMIT_FRAME_POINTER is not set
CONFIG_HYPERVISOR_GUEST=y
CONFIG_PARAVIRT=y
# CONFIG_PARAVIRT_DEBUG is not set
CONFIG_PARAVIRT_SPINLOCKS=y
# CONFIG_QUEUED_LOCK_STAT is not set
CONFIG_XEN=y
CONFIG_XEN_DOM0=y
CONFIG_XEN_PVHVM=y
CONFIG_XEN_512GB=y
CONFIG_XEN_SAVE_RESTORE=y
# CONFIG_XEN_DEBUG_FS is not set
# CONFIG_XEN_PVH is not set
CONFIG_KVM_GUEST=y
# CONFIG_KVM_DEBUG_FS is not set
CONFIG_PARAVIRT_TIME_ACCOUNTING=y
CONFIG_PARAVIRT_CLOCK=y
CONFIG_NO_BOOTMEM=y
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
# CONFIG_PROCESSOR_SELECT is not set
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
CONFIG_GART_IOMMU=y
# CONFIG_CALGARY_IOMMU is not set
CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
CONFIG_MAXSMP=y
CONFIG_NR_CPUS=8192
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
CONFIG_SCHED_MC_PRIO=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
CONFIG_PREEMPT_COUNT=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
CONFIG_X86_MCE_AMD=y
CONFIG_X86_MCE_THRESHOLD=y
CONFIG_X86_MCE_INJECT=m
CONFIG_X86_THERMAL_VECTOR=y

#
# Performance monitoring
#
CONFIG_PERF_EVENTS_INTEL_UNCORE=y
CONFIG_PERF_EVENTS_INTEL_RAPL=y
CONFIG_PERF_EVENTS_INTEL_CSTATE=y
# CONFIG_PERF_EVENTS_AMD_POWER is not set
# CONFIG_VM86 is not set
CONFIG_X86_16BIT=y
CONFIG_X86_ESPFIX64=y
CONFIG_X86_VSYSCALL_EMULATION=y
CONFIG_I8K=m
CONFIG_MICROCODE=y
CONFIG_MICROCODE_INTEL=y
CONFIG_MICROCODE_AMD=y
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_X86_DIRECT_GBPAGES=y
CONFIG_NUMA=y
CONFIG_AMD_NUMA=y
CONFIG_X86_64_ACPI_NUMA=y
CONFIG_NODES_SPAN_OTHER_NODES=y
# CONFIG_NUMA_EMU is not set
CONFIG_NODES_SHIFT=10
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_MEMORY_PROBE=y
CONFIG_ARCH_PROC_KCORE_TEXT=y
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_NEED_MULTIPLE_NODES=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
CONFIG_ARCH_DISCARD_MEMBLOCK=y
CONFIG_MEMORY_ISOLATION=y
CONFIG_MOVABLE_NODE=y
CONFIG_HAVE_BOOTMEM_INFO_NODE=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTPLUG_SPARSE=y
# CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE is not set
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
CONFIG_MEMORY_BALLOON=y
CONFIG_BALLOON_COMPACTION=y
CONFIG_COMPACTION=y
CONFIG_MIGRATION=y
CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_MMU_NOTIFIER=y
CONFIG_KSM=y
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
CONFIG_MEMORY_FAILURE=y
CONFIG_HWPOISON_INJECT=m
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
# CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set
CONFIG_TRANSPARENT_HUGE_PAGECACHE=y
CONFIG_CLEANCACHE=y
CONFIG_FRONTSWAP=y
CONFIG_CMA=y
# CONFIG_CMA_DEBUG is not set
# CONFIG_CMA_DEBUGFS is not set
CONFIG_CMA_AREAS=7
# CONFIG_MEM_SOFT_DIRTY is not set
CONFIG_ZSWAP=y
CONFIG_ZPOOL=y
CONFIG_ZBUD=y
# CONFIG_Z3FOLD is not set
CONFIG_ZSMALLOC=y
# CONFIG_PGTABLE_MAPPING is not set
# CONFIG_ZSMALLOC_STAT is not set
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT=y
# CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ZONE_DEVICE=y
CONFIG_FRAME_VECTOR=y
CONFIG_ARCH_USES_HIGH_VMA_FLAGS=y
CONFIG_ARCH_HAS_PKEYS=y
CONFIG_X86_PMEM_LEGACY_DEVICE=y
CONFIG_X86_PMEM_LEGACY=m
CONFIG_X86_CHECK_BIOS_CORRUPTION=y
# CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK is not set
CONFIG_X86_RESERVE_LOW=64
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0
CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
CONFIG_ARCH_RANDOM=y
CONFIG_X86_SMAP=y
# CONFIG_X86_INTEL_MPX is not set
CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y
CONFIG_EFI=y
CONFIG_EFI_STUB=y
# CONFIG_EFI_MIXED is not set
CONFIG_SECCOMP=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
CONFIG_KEXEC=y
# CONFIG_KEXEC_FILE is not set
CONFIG_CRASH_DUMP=y
CONFIG_KEXEC_JUMP=y
CONFIG_PHYSICAL_START=0x1000000
CONFIG_RELOCATABLE=y
# CONFIG_RANDOMIZE_BASE is not set
CONFIG_PHYSICAL_ALIGN=0x1000000
CONFIG_HOTPLUG_CPU=y
# CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
# CONFIG_DEBUG_HOTPLUG_CPU0 is not set
# CONFIG_COMPAT_VDSO is not set
# CONFIG_LEGACY_VSYSCALL_NATIVE is not set
CONFIG_LEGACY_VSYSCALL_EMULATE=y
# CONFIG_LEGACY_VSYSCALL_NONE is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_MODIFY_LDT_SYSCALL=y
CONFIG_HAVE_LIVEPATCH=y
# CONFIG_LIVEPATCH is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
CONFIG_USE_PERCPU_NUMA_NODE_ID=y

#
# Power management and ACPI options
#
CONFIG_ARCH_HIBERNATION_HEADER=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_SUSPEND_SKIP_SYNC is not set
CONFIG_HIBERNATE_CALLBACKS=y
CONFIG_HIBERNATION=y
CONFIG_PM_STD_PARTITION=""
CONFIG_PM_SLEEP=y
CONFIG_PM_SLEEP_SMP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
CONFIG_PM_DEBUG=y
CONFIG_PM_ADVANCED_DEBUG=y
CONFIG_PM_TEST_SUSPEND=y
CONFIG_PM_SLEEP_DEBUG=y
# CONFIG_DPM_WATCHDOG is not set
# CONFIG_PM_TRACE_RTC is not set
CONFIG_PM_CLK=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_ACPI=y
CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
# CONFIG_ACPI_DEBUGGER is not set
CONFIG_ACPI_SLEEP=y
# CONFIG_ACPI_PROCFS_POWER is not set
CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=y
CONFIG_ACPI_EC_DEBUGFS=m
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=m
CONFIG_ACPI_FAN=y
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_CPU_FREQ_PSS=y
CONFIG_ACPI_PROCESSOR_CSTATE=y
CONFIG_ACPI_PROCESSOR_IDLE=y
CONFIG_ACPI_CPPC_LIB=y
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_IPMI=m
CONFIG_ACPI_HOTPLUG_CPU=y
CONFIG_ACPI_PROCESSOR_AGGREGATOR=m
CONFIG_ACPI_THERMAL=y
CONFIG_ACPI_NUMA=y
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y
CONFIG_ACPI_TABLE_UPGRADE=y
CONFIG_ACPI_DEBUG=y
CONFIG_ACPI_PCI_SLOT=y
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
CONFIG_ACPI_HOTPLUG_MEMORY=y
CONFIG_ACPI_HOTPLUG_IOAPIC=y
CONFIG_ACPI_SBS=m
CONFIG_ACPI_HED=y
CONFIG_ACPI_CUSTOM_METHOD=m
CONFIG_ACPI_BGRT=y
# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set
CONFIG_ACPI_NFIT=m
# CONFIG_ACPI_NFIT_DEBUG is not set
CONFIG_HAVE_ACPI_APEI=y
CONFIG_HAVE_ACPI_APEI_NMI=y
CONFIG_ACPI_APEI=y
CONFIG_ACPI_APEI_GHES=y
CONFIG_ACPI_APEI_PCIEAER=y
CONFIG_ACPI_APEI_MEMORY_FAILURE=y
CONFIG_ACPI_APEI_EINJ=m
# CONFIG_ACPI_APEI_ERST_DEBUG is not set
# CONFIG_DPTF_POWER is not set
# CONFIG_ACPI_EXTLOG is not set
# CONFIG_PMIC_OPREGION is not set
# CONFIG_ACPI_CONFIGFS is not set
CONFIG_SFI=y

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_ATTR_SET=y
CONFIG_CPU_FREQ_GOV_COMMON=y
# CONFIG_CPU_FREQ_STAT is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
# CONFIG_CPU_FREQ_GOV_SCHEDUTIL is not set

#
# CPU frequency scaling drivers
#
CONFIG_X86_INTEL_PSTATE=y
CONFIG_X86_PCC_CPUFREQ=m
CONFIG_X86_ACPI_CPUFREQ=m
CONFIG_X86_ACPI_CPUFREQ_CPB=y
CONFIG_X86_POWERNOW_K8=m
CONFIG_X86_AMD_FREQ_SENSITIVITY=m
# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
CONFIG_X86_P4_CLOCKMOD=m

#
# shared options
#
CONFIG_X86_SPEEDSTEP_LIB=m

#
# CPU Idle
#
CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_GOV_LADDER is not set
CONFIG_CPU_IDLE_GOV_MENU=y
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
CONFIG_INTEL_IDLE=y

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_XEN=y
CONFIG_PCI_DOMAINS=y
# CONFIG_PCI_CNB20LE_QUIRK is not set
CONFIG_PCIEPORTBUS=y
CONFIG_HOTPLUG_PCI_PCIE=y
CONFIG_PCIEAER=y
CONFIG_PCIE_ECRC=y
CONFIG_PCIEAER_INJECT=m
CONFIG_PCIEASPM=y
# CONFIG_PCIEASPM_DEBUG is not set
CONFIG_PCIEASPM_DEFAULT=y
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
# CONFIG_PCIEASPM_PERFORMANCE is not set
CONFIG_PCIE_PME=y
# CONFIG_PCIE_DPC is not set
# CONFIG_PCIE_PTM is not set
CONFIG_PCI_BUS_ADDR_T_64BIT=y
CONFIG_PCI_MSI=y
CONFIG_PCI_MSI_IRQ_DOMAIN=y
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_REALLOC_ENABLE_AUTO is not set
CONFIG_PCI_STUB=y
# CONFIG_XEN_PCIDEV_FRONTEND is not set
CONFIG_HT_IRQ=y
CONFIG_PCI_ATS=y
CONFIG_PCI_IOV=y
CONFIG_PCI_PRI=y
CONFIG_PCI_PASID=y
CONFIG_PCI_LABEL=y
# CONFIG_PCI_HYPERV is not set
CONFIG_HOTPLUG_PCI=y
CONFIG_HOTPLUG_PCI_ACPI=y
CONFIG_HOTPLUG_PCI_ACPI_IBM=m
# CONFIG_HOTPLUG_PCI_CPCI is not set
CONFIG_HOTPLUG_PCI_SHPC=m

#
# DesignWare PCI Core Support
#
# CONFIG_PCIE_DW_PLAT is not set

#
# PCI host controller drivers
#
# CONFIG_VMD is not set
# CONFIG_ISA_BUS is not set
CONFIG_ISA_DMA_API=y
CONFIG_AMD_NB=y
CONFIG_PCCARD=y
# CONFIG_PCMCIA is not set
CONFIG_CARDBUS=y

#
# PC-card bridges
#
CONFIG_YENTA=m
CONFIG_YENTA_O2=y
CONFIG_YENTA_RICOH=y
CONFIG_YENTA_TI=y
CONFIG_YENTA_ENE_TUNE=y
CONFIG_YENTA_TOSHIBA=y
# CONFIG_RAPIDIO is not set
# CONFIG_X86_SYSFB is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
# CONFIG_HAVE_AOUT is not set
CONFIG_BINFMT_MISC=m
CONFIG_COREDUMP=y
CONFIG_IA32_EMULATION=y
# CONFIG_IA32_AOUT is not set
# CONFIG_X86_X32 is not set
CONFIG_COMPAT_32=y
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_SYSVIPC_COMPAT=y
CONFIG_KEYS_COMPAT=y
CONFIG_X86_DEV_DMA_OPS=y
CONFIG_NET=y
CONFIG_COMPAT_NETLINK_MESSAGES=y
CONFIG_NET_INGRESS=y
CONFIG_NET_EGRESS=y

#
# Networking options
#
CONFIG_PACKET=y
CONFIG_PACKET_DIAG=m
CONFIG_UNIX=y
CONFIG_UNIX_DIAG=m
CONFIG_XFRM=y
CONFIG_XFRM_ALGO=y
CONFIG_XFRM_USER=y
CONFIG_XFRM_SUB_POLICY=y
CONFIG_XFRM_MIGRATE=y
CONFIG_XFRM_STATISTICS=y
CONFIG_XFRM_IPCOMP=m
CONFIG_NET_KEY=m
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_FIB_TRIE_STATS=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_IP_ROUTE_CLASSID=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
# CONFIG_IP_PNP_BOOTP is not set
# CONFIG_IP_PNP_RARP is not set
CONFIG_NET_IPIP=m
CONFIG_NET_IPGRE_DEMUX=m
CONFIG_NET_IP_TUNNEL=m
CONFIG_NET_IPGRE=m
CONFIG_NET_IPGRE_BROADCAST=y
CONFIG_IP_MROUTE=y
CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
CONFIG_SYN_COOKIES=y
CONFIG_NET_IPVTI=m
CONFIG_NET_UDP_TUNNEL=m
# CONFIG_NET_FOU is not set
# CONFIG_NET_FOU_IP_TUNNELS is not set
CONFIG_INET_AH=m
CONFIG_INET_ESP=m
# CONFIG_INET_ESP_OFFLOAD is not set
CONFIG_INET_IPCOMP=m
CONFIG_INET_XFRM_TUNNEL=m
CONFIG_INET_TUNNEL=m
CONFIG_INET_XFRM_MODE_TRANSPORT=m
CONFIG_INET_XFRM_MODE_TUNNEL=m
CONFIG_INET_XFRM_MODE_BEET=m
CONFIG_INET_DIAG=m
CONFIG_INET_TCP_DIAG=m
CONFIG_INET_UDP_DIAG=m
# CONFIG_INET_RAW_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not set
CONFIG_TCP_CONG_ADVANCED=y
CONFIG_TCP_CONG_BIC=m
CONFIG_TCP_CONG_CUBIC=y
CONFIG_TCP_CONG_WESTWOOD=m
CONFIG_TCP_CONG_HTCP=m
CONFIG_TCP_CONG_HSTCP=m
CONFIG_TCP_CONG_HYBLA=m
CONFIG_TCP_CONG_VEGAS=m
# CONFIG_TCP_CONG_NV is not set
CONFIG_TCP_CONG_SCALABLE=m
CONFIG_TCP_CONG_LP=m
CONFIG_TCP_CONG_VENO=m
CONFIG_TCP_CONG_YEAH=m
CONFIG_TCP_CONG_ILLINOIS=m
# CONFIG_TCP_CONG_DCTCP is not set
# CONFIG_TCP_CONG_CDG is not set
# CONFIG_TCP_CONG_BBR is not set
CONFIG_DEFAULT_CUBIC=y
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_TCP_CONG="cubic"
CONFIG_TCP_MD5SIG=y
CONFIG_IPV6=y
CONFIG_IPV6_ROUTER_PREF=y
CONFIG_IPV6_ROUTE_INFO=y
CONFIG_IPV6_OPTIMISTIC_DAD=y
CONFIG_INET6_AH=m
CONFIG_INET6_ESP=m
# CONFIG_INET6_ESP_OFFLOAD is not set
CONFIG_INET6_IPCOMP=m
CONFIG_IPV6_MIP6=m
# CONFIG_IPV6_ILA is not set
CONFIG_INET6_XFRM_TUNNEL=m
CONFIG_INET6_TUNNEL=m
CONFIG_INET6_XFRM_MODE_TRANSPORT=m
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=m
# CONFIG_IPV6_VTI is not set
CONFIG_IPV6_SIT=m
CONFIG_IPV6_SIT_6RD=y
CONFIG_IPV6_NDISC_NODETYPE=y
CONFIG_IPV6_TUNNEL=m
# CONFIG_IPV6_GRE is not set
# CONFIG_IPV6_FOU is not set
# CONFIG_IPV6_FOU_TUNNEL is not set
CONFIG_IPV6_MULTIPLE_TABLES=y
# CONFIG_IPV6_SUBTREES is not set
CONFIG_IPV6_MROUTE=y
CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y
CONFIG_IPV6_PIMSM_V2=y
# CONFIG_IPV6_SEG6_LWTUNNEL is not set
# CONFIG_IPV6_SEG6_HMAC is not set
CONFIG_NETLABEL=y
CONFIG_NETWORK_SECMARK=y
CONFIG_NET_PTP_CLASSIFY=y
CONFIG_NETWORK_PHY_TIMESTAMPING=y
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
CONFIG_NETFILTER_ADVANCED=y
CONFIG_BRIDGE_NETFILTER=m

#
# Core Netfilter Configuration
#
CONFIG_NETFILTER_INGRESS=y
CONFIG_NETFILTER_NETLINK=m
CONFIG_NETFILTER_NETLINK_ACCT=m
CONFIG_NETFILTER_NETLINK_QUEUE=m
CONFIG_NETFILTER_NETLINK_LOG=m
CONFIG_NF_CONNTRACK=m
CONFIG_NF_LOG_COMMON=m
# CONFIG_NF_LOG_NETDEV is not set
CONFIG_NF_CONNTRACK_MARK=y
CONFIG_NF_CONNTRACK_SECMARK=y
CONFIG_NF_CONNTRACK_ZONES=y
CONFIG_NF_CONNTRACK_PROCFS=y
CONFIG_NF_CONNTRACK_EVENTS=y
# CONFIG_NF_CONNTRACK_TIMEOUT is not set
CONFIG_NF_CONNTRACK_TIMESTAMP=y
CONFIG_NF_CONNTRACK_LABELS=y
CONFIG_NF_CT_PROTO_DCCP=y
CONFIG_NF_CT_PROTO_GRE=m
CONFIG_NF_CT_PROTO_SCTP=y
CONFIG_NF_CT_PROTO_UDPLITE=y
CONFIG_NF_CONNTRACK_AMANDA=m
CONFIG_NF_CONNTRACK_FTP=m
CONFIG_NF_CONNTRACK_H323=m
CONFIG_NF_CONNTRACK_IRC=m
CONFIG_NF_CONNTRACK_BROADCAST=m
CONFIG_NF_CONNTRACK_NETBIOS_NS=m
CONFIG_NF_CONNTRACK_SNMP=m
CONFIG_NF_CONNTRACK_PPTP=m
CONFIG_NF_CONNTRACK_SANE=m
CONFIG_NF_CONNTRACK_SIP=m
CONFIG_NF_CONNTRACK_TFTP=m
CONFIG_NF_CT_NETLINK=m
# CONFIG_NF_CT_NETLINK_TIMEOUT is not set
# CONFIG_NETFILTER_NETLINK_GLUE_CT is not set
CONFIG_NF_NAT=m
CONFIG_NF_NAT_NEEDED=y
CONFIG_NF_NAT_PROTO_DCCP=y
CONFIG_NF_NAT_PROTO_UDPLITE=y
CONFIG_NF_NAT_PROTO_SCTP=y
CONFIG_NF_NAT_AMANDA=m
CONFIG_NF_NAT_FTP=m
CONFIG_NF_NAT_IRC=m
CONFIG_NF_NAT_SIP=m
CONFIG_NF_NAT_TFTP=m
CONFIG_NF_NAT_REDIRECT=m
CONFIG_NETFILTER_SYNPROXY=m
CONFIG_NF_TABLES=m
# CONFIG_NF_TABLES_INET is not set
# CONFIG_NF_TABLES_NETDEV is not set
CONFIG_NFT_EXTHDR=m
CONFIG_NFT_META=m
# CONFIG_NFT_RT is not set
# CONFIG_NFT_NUMGEN is not set
CONFIG_NFT_CT=m
# CONFIG_NFT_SET_RBTREE is not set
# CONFIG_NFT_SET_HASH is not set
# CONFIG_NFT_SET_BITMAP is not set
CONFIG_NFT_COUNTER=m
CONFIG_NFT_LOG=m
CONFIG_NFT_LIMIT=m
# CONFIG_NFT_MASQ is not set
# CONFIG_NFT_REDIR is not set
CONFIG_NFT_NAT=m
# CONFIG_NFT_OBJREF is not set
# CONFIG_NFT_QUEUE is not set
# CONFIG_NFT_QUOTA is not set
# CONFIG_NFT_REJECT is not set
CONFIG_NFT_COMPAT=m
CONFIG_NFT_HASH=m
CONFIG_NETFILTER_XTABLES=y

#
# Xtables combined modules
#
CONFIG_NETFILTER_XT_MARK=m
CONFIG_NETFILTER_XT_CONNMARK=m
CONFIG_NETFILTER_XT_SET=m

#
# Xtables targets
#
CONFIG_NETFILTER_XT_TARGET_AUDIT=m
CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=m
CONFIG_NETFILTER_XT_TARGET_CT=m
CONFIG_NETFILTER_XT_TARGET_DSCP=m
CONFIG_NETFILTER_XT_TARGET_HL=m
CONFIG_NETFILTER_XT_TARGET_HMARK=m
CONFIG_NETFILTER_XT_TARGET_IDLETIMER=m
CONFIG_NETFILTER_XT_TARGET_LED=m
CONFIG_NETFILTER_XT_TARGET_LOG=m
CONFIG_NETFILTER_XT_TARGET_MARK=m
CONFIG_NETFILTER_XT_NAT=m
CONFIG_NETFILTER_XT_TARGET_NETMAP=m
CONFIG_NETFILTER_XT_TARGET_NFLOG=m
CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
CONFIG_NETFILTER_XT_TARGET_RATEEST=m
CONFIG_NETFILTER_XT_TARGET_REDIRECT=m
CONFIG_NETFILTER_XT_TARGET_TEE=m
CONFIG_NETFILTER_XT_TARGET_TPROXY=m
CONFIG_NETFILTER_XT_TARGET_TRACE=m
CONFIG_NETFILTER_XT_TARGET_SECMARK=m
CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m

#
# Xtables matches
#
CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
CONFIG_NETFILTER_XT_MATCH_BPF=m
# CONFIG_NETFILTER_XT_MATCH_CGROUP is not set
CONFIG_NETFILTER_XT_MATCH_CLUSTER=m
CONFIG_NETFILTER_XT_MATCH_COMMENT=m
CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
CONFIG_NETFILTER_XT_MATCH_CONNLABEL=m
CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
CONFIG_NETFILTER_XT_MATCH_CPU=m
CONFIG_NETFILTER_XT_MATCH_DCCP=m
CONFIG_NETFILTER_XT_MATCH_DEVGROUP=m
CONFIG_NETFILTER_XT_MATCH_DSCP=m
CONFIG_NETFILTER_XT_MATCH_ECN=m
CONFIG_NETFILTER_XT_MATCH_ESP=m
CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
CONFIG_NETFILTER_XT_MATCH_HELPER=m
CONFIG_NETFILTER_XT_MATCH_HL=m
# CONFIG_NETFILTER_XT_MATCH_IPCOMP is not set
CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
CONFIG_NETFILTER_XT_MATCH_IPVS=m
CONFIG_NETFILTER_XT_MATCH_L2TP=m
CONFIG_NETFILTER_XT_MATCH_LENGTH=m
CONFIG_NETFILTER_XT_MATCH_LIMIT=m
CONFIG_NETFILTER_XT_MATCH_MAC=m
CONFIG_NETFILTER_XT_MATCH_MARK=m
CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
CONFIG_NETFILTER_XT_MATCH_NFACCT=m
CONFIG_NETFILTER_XT_MATCH_OSF=m
CONFIG_NETFILTER_XT_MATCH_OWNER=m
CONFIG_NETFILTER_XT_MATCH_POLICY=m
CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
CONFIG_NETFILTER_XT_MATCH_QUOTA=m
CONFIG_NETFILTER_XT_MATCH_RATEEST=m
CONFIG_NETFILTER_XT_MATCH_REALM=m
CONFIG_NETFILTER_XT_MATCH_RECENT=m
CONFIG_NETFILTER_XT_MATCH_SCTP=m
CONFIG_NETFILTER_XT_MATCH_STATE=m
CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
CONFIG_NETFILTER_XT_MATCH_STRING=m
CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
CONFIG_NETFILTER_XT_MATCH_TIME=m
CONFIG_NETFILTER_XT_MATCH_U32=m
CONFIG_IP_SET=m
CONFIG_IP_SET_MAX=256
CONFIG_IP_SET_BITMAP_IP=m
CONFIG_IP_SET_BITMAP_IPMAC=m
CONFIG_IP_SET_BITMAP_PORT=m
CONFIG_IP_SET_HASH_IP=m
# CONFIG_IP_SET_HASH_IPMARK is not set
CONFIG_IP_SET_HASH_IPPORT=m
CONFIG_IP_SET_HASH_IPPORTIP=m
CONFIG_IP_SET_HASH_IPPORTNET=m
# CONFIG_IP_SET_HASH_IPMAC is not set
# CONFIG_IP_SET_HASH_MAC is not set
# CONFIG_IP_SET_HASH_NETPORTNET is not set
CONFIG_IP_SET_HASH_NET=m
# CONFIG_IP_SET_HASH_NETNET is not set
CONFIG_IP_SET_HASH_NETPORT=m
CONFIG_IP_SET_HASH_NETIFACE=m
CONFIG_IP_SET_LIST_SET=m
CONFIG_IP_VS=m
CONFIG_IP_VS_IPV6=y
# CONFIG_IP_VS_DEBUG is not set
CONFIG_IP_VS_TAB_BITS=12

#
# IPVS transport protocol load balancing support
#
CONFIG_IP_VS_PROTO_TCP=y
CONFIG_IP_VS_PROTO_UDP=y
CONFIG_IP_VS_PROTO_AH_ESP=y
CONFIG_IP_VS_PROTO_ESP=y
CONFIG_IP_VS_PROTO_AH=y
CONFIG_IP_VS_PROTO_SCTP=y

#
# IPVS scheduler
#
CONFIG_IP_VS_RR=m
CONFIG_IP_VS_WRR=m
CONFIG_IP_VS_LC=m
CONFIG_IP_VS_WLC=m
# CONFIG_IP_VS_FO is not set
# CONFIG_IP_VS_OVF is not set
CONFIG_IP_VS_LBLC=m
CONFIG_IP_VS_LBLCR=m
CONFIG_IP_VS_DH=m
CONFIG_IP_VS_SH=m
CONFIG_IP_VS_SED=m
CONFIG_IP_VS_NQ=m

#
# IPVS SH scheduler
#
CONFIG_IP_VS_SH_TAB_BITS=8

#
# IPVS application helper
#
CONFIG_IP_VS_FTP=m
CONFIG_IP_VS_NFCT=y
CONFIG_IP_VS_PE_SIP=m

#
# IP: Netfilter Configuration
#
CONFIG_NF_DEFRAG_IPV4=m
CONFIG_NF_CONNTRACK_IPV4=m
# CONFIG_NF_SOCKET_IPV4 is not set
CONFIG_NF_TABLES_IPV4=m
CONFIG_NFT_CHAIN_ROUTE_IPV4=m
# CONFIG_NFT_REJECT_IPV4 is not set
# CONFIG_NFT_DUP_IPV4 is not set
# CONFIG_NFT_FIB_IPV4 is not set
# CONFIG_NF_TABLES_ARP is not set
CONFIG_NF_DUP_IPV4=m
# CONFIG_NF_LOG_ARP is not set
CONFIG_NF_LOG_IPV4=m
CONFIG_NF_REJECT_IPV4=m
CONFIG_NF_NAT_IPV4=m
CONFIG_NFT_CHAIN_NAT_IPV4=m
CONFIG_NF_NAT_MASQUERADE_IPV4=m
CONFIG_NF_NAT_SNMP_BASIC=m
CONFIG_NF_NAT_PROTO_GRE=m
CONFIG_NF_NAT_PPTP=m
CONFIG_NF_NAT_H323=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_AH=m
CONFIG_IP_NF_MATCH_ECN=m
CONFIG_IP_NF_MATCH_RPFILTER=m
CONFIG_IP_NF_MATCH_TTL=m
CONFIG_IP_NF_FILTER=m
CONFIG_IP_NF_TARGET_REJECT=m
CONFIG_IP_NF_TARGET_SYNPROXY=m
CONFIG_IP_NF_NAT=m
CONFIG_IP_NF_TARGET_MASQUERADE=m
CONFIG_IP_NF_TARGET_NETMAP=m
CONFIG_IP_NF_TARGET_REDIRECT=m
CONFIG_IP_NF_MANGLE=m
CONFIG_IP_NF_TARGET_CLUSTERIP=m
CONFIG_IP_NF_TARGET_ECN=m
CONFIG_IP_NF_TARGET_TTL=m
CONFIG_IP_NF_RAW=m
CONFIG_IP_NF_SECURITY=m
CONFIG_IP_NF_ARPTABLES=m
CONFIG_IP_NF_ARPFILTER=m
CONFIG_IP_NF_ARP_MANGLE=m

#
# IPv6: Netfilter Configuration
#
CONFIG_NF_DEFRAG_IPV6=m
CONFIG_NF_CONNTRACK_IPV6=m
# CONFIG_NF_SOCKET_IPV6 is not set
CONFIG_NF_TABLES_IPV6=m
CONFIG_NFT_CHAIN_ROUTE_IPV6=m
# CONFIG_NFT_REJECT_IPV6 is not set
# CONFIG_NFT_DUP_IPV6 is not set
# CONFIG_NFT_FIB_IPV6 is not set
CONFIG_NF_DUP_IPV6=m
CONFIG_NF_REJECT_IPV6=m
CONFIG_NF_LOG_IPV6=m
CONFIG_NF_NAT_IPV6=m
CONFIG_NFT_CHAIN_NAT_IPV6=m
# CONFIG_NF_NAT_MASQUERADE_IPV6 is not set
CONFIG_IP6_NF_IPTABLES=m
CONFIG_IP6_NF_MATCH_AH=m
CONFIG_IP6_NF_MATCH_EUI64=m
CONFIG_IP6_NF_MATCH_FRAG=m
CONFIG_IP6_NF_MATCH_OPTS=m
CONFIG_IP6_NF_MATCH_HL=m
CONFIG_IP6_NF_MATCH_IPV6HEADER=m
CONFIG_IP6_NF_MATCH_MH=m
CONFIG_IP6_NF_MATCH_RPFILTER=m
CONFIG_IP6_NF_MATCH_RT=m
CONFIG_IP6_NF_TARGET_HL=m
CONFIG_IP6_NF_FILTER=m
CONFIG_IP6_NF_TARGET_REJECT=m
CONFIG_IP6_NF_TARGET_SYNPROXY=m
CONFIG_IP6_NF_MANGLE=m
CONFIG_IP6_NF_RAW=m
CONFIG_IP6_NF_SECURITY=m
# CONFIG_IP6_NF_NAT is not set
CONFIG_NF_TABLES_BRIDGE=m
# CONFIG_NFT_BRIDGE_META is not set
# CONFIG_NF_LOG_BRIDGE is not set
CONFIG_BRIDGE_NF_EBTABLES=m
CONFIG_BRIDGE_EBT_BROUTE=m
CONFIG_BRIDGE_EBT_T_FILTER=m
CONFIG_BRIDGE_EBT_T_NAT=m
CONFIG_BRIDGE_EBT_802_3=m
CONFIG_BRIDGE_EBT_AMONG=m
CONFIG_BRIDGE_EBT_ARP=m
CONFIG_BRIDGE_EBT_IP=m
CONFIG_BRIDGE_EBT_IP6=m
CONFIG_BRIDGE_EBT_LIMIT=m
CONFIG_BRIDGE_EBT_MARK=m
CONFIG_BRIDGE_EBT_PKTTYPE=m
CONFIG_BRIDGE_EBT_STP=m
CONFIG_BRIDGE_EBT_VLAN=m
CONFIG_BRIDGE_EBT_ARPREPLY=m
CONFIG_BRIDGE_EBT_DNAT=m
CONFIG_BRIDGE_EBT_MARK_T=m
CONFIG_BRIDGE_EBT_REDIRECT=m
CONFIG_BRIDGE_EBT_SNAT=m
CONFIG_BRIDGE_EBT_LOG=m
CONFIG_BRIDGE_EBT_NFLOG=m
CONFIG_IP_DCCP=m
CONFIG_INET_DCCP_DIAG=m

#
# DCCP CCIDs Configuration
#
# CONFIG_IP_DCCP_CCID2_DEBUG is not set
CONFIG_IP_DCCP_CCID3=y
# CONFIG_IP_DCCP_CCID3_DEBUG is not set
CONFIG_IP_DCCP_TFRC_LIB=y

#
# DCCP Kernel Hacking
#
# CONFIG_IP_DCCP_DEBUG is not set
# CONFIG_NET_DCCPPROBE is not set
CONFIG_IP_SCTP=m
CONFIG_NET_SCTPPROBE=m
# CONFIG_SCTP_DBG_OBJCNT is not set
# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_MD5 is not set
CONFIG_SCTP_DEFAULT_COOKIE_HMAC_SHA1=y
# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_NONE is not set
CONFIG_SCTP_COOKIE_HMAC_MD5=y
CONFIG_SCTP_COOKIE_HMAC_SHA1=y
CONFIG_INET_SCTP_DIAG=m
# CONFIG_RDS is not set
CONFIG_TIPC=m
CONFIG_TIPC_MEDIA_UDP=y
CONFIG_ATM=m
CONFIG_ATM_CLIP=m
# CONFIG_ATM_CLIP_NO_ICMP is not set
CONFIG_ATM_LANE=m
# CONFIG_ATM_MPOA is not set
CONFIG_ATM_BR2684=m
# CONFIG_ATM_BR2684_IPFILTER is not set
CONFIG_L2TP=m
CONFIG_L2TP_DEBUGFS=m
CONFIG_L2TP_V3=y
CONFIG_L2TP_IP=m
CONFIG_L2TP_ETH=m
CONFIG_STP=m
CONFIG_GARP=m
CONFIG_MRP=m
CONFIG_BRIDGE=m
CONFIG_BRIDGE_IGMP_SNOOPING=y
CONFIG_BRIDGE_VLAN_FILTERING=y
CONFIG_HAVE_NET_DSA=y
# CONFIG_NET_DSA is not set
CONFIG_VLAN_8021Q=m
CONFIG_VLAN_8021Q_GVRP=y
CONFIG_VLAN_8021Q_MVRP=y
# CONFIG_DECNET is not set
CONFIG_LLC=m
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_6LOWPAN is not set
CONFIG_IEEE802154=m
# CONFIG_IEEE802154_NL802154_EXPERIMENTAL is not set
CONFIG_IEEE802154_SOCKET=m
CONFIG_MAC802154=m
CONFIG_NET_SCHED=y

#
# Queueing/Scheduling
#
CONFIG_NET_SCH_CBQ=m
CONFIG_NET_SCH_HTB=m
CONFIG_NET_SCH_HFSC=m
CONFIG_NET_SCH_ATM=m
CONFIG_NET_SCH_PRIO=m
CONFIG_NET_SCH_MULTIQ=m
CONFIG_NET_SCH_RED=m
CONFIG_NET_SCH_SFB=m
CONFIG_NET_SCH_SFQ=m
CONFIG_NET_SCH_TEQL=m
CONFIG_NET_SCH_TBF=m
CONFIG_NET_SCH_GRED=m
CONFIG_NET_SCH_DSMARK=m
CONFIG_NET_SCH_NETEM=m
CONFIG_NET_SCH_DRR=m
CONFIG_NET_SCH_MQPRIO=m
CONFIG_NET_SCH_CHOKE=m
CONFIG_NET_SCH_QFQ=m
CONFIG_NET_SCH_CODEL=m
CONFIG_NET_SCH_FQ_CODEL=m
# CONFIG_NET_SCH_FQ is not set
# CONFIG_NET_SCH_HHF is not set
# CONFIG_NET_SCH_PIE is not set
CONFIG_NET_SCH_INGRESS=m
CONFIG_NET_SCH_PLUG=m
# CONFIG_NET_SCH_DEFAULT is not set

#
# Classification
#
CONFIG_NET_CLS=y
CONFIG_NET_CLS_BASIC=m
CONFIG_NET_CLS_TCINDEX=m
CONFIG_NET_CLS_ROUTE4=m
CONFIG_NET_CLS_FW=m
CONFIG_NET_CLS_U32=m
CONFIG_CLS_U32_PERF=y
CONFIG_CLS_U32_MARK=y
CONFIG_NET_CLS_RSVP=m
CONFIG_NET_CLS_RSVP6=m
CONFIG_NET_CLS_FLOW=m
CONFIG_NET_CLS_CGROUP=y
CONFIG_NET_CLS_BPF=m
# CONFIG_NET_CLS_FLOWER is not set
# CONFIG_NET_CLS_MATCHALL is not set
CONFIG_NET_EMATCH=y
CONFIG_NET_EMATCH_STACK=32
CONFIG_NET_EMATCH_CMP=m
CONFIG_NET_EMATCH_NBYTE=m
CONFIG_NET_EMATCH_U32=m
CONFIG_NET_EMATCH_META=m
CONFIG_NET_EMATCH_TEXT=m
CONFIG_NET_EMATCH_IPSET=m
CONFIG_NET_CLS_ACT=y
CONFIG_NET_ACT_POLICE=m
CONFIG_NET_ACT_GACT=m
CONFIG_GACT_PROB=y
CONFIG_NET_ACT_MIRRED=m
# CONFIG_NET_ACT_SAMPLE is not set
CONFIG_NET_ACT_IPT=m
CONFIG_NET_ACT_NAT=m
CONFIG_NET_ACT_PEDIT=m
CONFIG_NET_ACT_SIMP=m
CONFIG_NET_ACT_SKBEDIT=m
CONFIG_NET_ACT_CSUM=m
# CONFIG_NET_ACT_VLAN is not set
# CONFIG_NET_ACT_BPF is not set
# CONFIG_NET_ACT_CONNMARK is not set
# CONFIG_NET_ACT_SKBMOD is not set
# CONFIG_NET_ACT_IFE is not set
# CONFIG_NET_ACT_TUNNEL_KEY is not set
CONFIG_NET_CLS_IND=y
CONFIG_NET_SCH_FIFO=y
CONFIG_DCB=y
CONFIG_DNS_RESOLVER=m
# CONFIG_BATMAN_ADV is not set
CONFIG_OPENVSWITCH=m
CONFIG_OPENVSWITCH_GRE=m
CONFIG_OPENVSWITCH_VXLAN=m
CONFIG_VSOCKETS=m
CONFIG_VMWARE_VMCI_VSOCKETS=m
# CONFIG_VIRTIO_VSOCKETS is not set
CONFIG_NETLINK_DIAG=m
CONFIG_MPLS=y
CONFIG_NET_MPLS_GSO=m
# CONFIG_MPLS_ROUTING is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_NET_NCSI is not set
CONFIG_RPS=y
CONFIG_RFS_ACCEL=y
CONFIG_XPS=y
# CONFIG_CGROUP_NET_PRIO is not set
CONFIG_CGROUP_NET_CLASSID=y
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
CONFIG_BPF_JIT=y
CONFIG_NET_FLOW_LIMIT=y

#
# Network testing
#
CONFIG_NET_PKTGEN=m
# CONFIG_NET_TCPPROBE is not set
CONFIG_NET_DROP_MONITOR=y
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_STREAM_PARSER is not set
CONFIG_FIB_RULES=y
CONFIG_WIRELESS=y
CONFIG_WIRELESS_EXT=y
CONFIG_WEXT_CORE=y
CONFIG_WEXT_PROC=y
CONFIG_WEXT_PRIV=y
CONFIG_CFG80211=m
# CONFIG_NL80211_TESTMODE is not set
# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
# CONFIG_CFG80211_CERTIFICATION_ONUS is not set
CONFIG_CFG80211_DEFAULT_PS=y
# CONFIG_CFG80211_DEBUGFS is not set
# CONFIG_CFG80211_INTERNAL_REGDB is not set
CONFIG_CFG80211_CRDA_SUPPORT=y
CONFIG_CFG80211_WEXT=y
CONFIG_LIB80211=m
# CONFIG_LIB80211_DEBUG is not set
CONFIG_MAC80211=m
CONFIG_MAC80211_HAS_RC=y
CONFIG_MAC80211_RC_MINSTREL=y
CONFIG_MAC80211_RC_MINSTREL_HT=y
# CONFIG_MAC80211_RC_MINSTREL_VHT is not set
CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
CONFIG_MAC80211_MESH=y
CONFIG_MAC80211_LEDS=y
# CONFIG_MAC80211_DEBUGFS is not set
# CONFIG_MAC80211_MESSAGE_TRACING is not set
# CONFIG_MAC80211_DEBUG_MENU is not set
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
# CONFIG_WIMAX is not set
CONFIG_RFKILL=m
CONFIG_RFKILL_LEDS=y
CONFIG_RFKILL_INPUT=y
# CONFIG_RFKILL_GPIO is not set
CONFIG_NET_9P=y
CONFIG_NET_9P_VIRTIO=y
# CONFIG_NET_9P_DEBUG is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not set
CONFIG_DST_CACHE=y
CONFIG_GRO_CELLS=y
# CONFIG_NET_DEVLINK is not set
CONFIG_MAY_USE_DEVLINK=y
CONFIG_HAVE_EBPF_JIT=y

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER=y
CONFIG_UEVENT_HELPER_PATH=""
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
# CONFIG_FIRMWARE_IN_KERNEL is not set
CONFIG_EXTRA_FIRMWARE=""
CONFIG_FW_LOADER_USER_HELPER=y
CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
CONFIG_SYS_HYPERVISOR=y
# CONFIG_GENERIC_CPU_DEVICES is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_SPI=y
CONFIG_DMA_SHARED_BUFFER=y
# CONFIG_DMA_FENCE_TRACE is not set
CONFIG_DMA_CMA=y

#
# Default contiguous memory area size:
#
CONFIG_CMA_SIZE_MBYTES=200
CONFIG_CMA_SIZE_SEL_MBYTES=y
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
# CONFIG_CMA_SIZE_SEL_MIN is not set
# CONFIG_CMA_SIZE_SEL_MAX is not set
CONFIG_CMA_ALIGNMENT=8

#
# Bus devices
#
CONFIG_CONNECTOR=y
CONFIG_PROC_EVENTS=y
CONFIG_MTD=m
# CONFIG_MTD_TESTS is not set
# CONFIG_MTD_REDBOOT_PARTS is not set
# CONFIG_MTD_CMDLINE_PARTS is not set
# CONFIG_MTD_AR7_PARTS is not set

#
# User Modules And Translation Layers
#
CONFIG_MTD_BLKDEVS=m
CONFIG_MTD_BLOCK=m
# CONFIG_MTD_BLOCK_RO is not set
# CONFIG_FTL is not set
# CONFIG_NFTL is not set
# CONFIG_INFTL is not set
# CONFIG_RFD_FTL is not set
# CONFIG_SSFDC is not set
# CONFIG_SM_FTL is not set
# CONFIG_MTD_OOPS is not set
# CONFIG_MTD_SWAP is not set
# CONFIG_MTD_PARTITIONED_MASTER is not set

#
# RAM/ROM/Flash chip drivers
#
# CONFIG_MTD_CFI is not set
# CONFIG_MTD_JEDECPROBE is not set
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
# CONFIG_MTD_CFI_I4 is not set
# CONFIG_MTD_CFI_I8 is not set
# CONFIG_MTD_RAM is not set
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_ABSENT is not set

#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
# CONFIG_MTD_INTEL_VR_NOR is not set
# CONFIG_MTD_PLATRAM is not set

#
# Self-contained MTD device drivers
#
# CONFIG_MTD_PMC551 is not set
# CONFIG_MTD_DATAFLASH is not set
# CONFIG_MTD_SST25L is not set
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_PHRAM is not set
# CONFIG_MTD_MTDRAM is not set
# CONFIG_MTD_BLOCK2MTD is not set

#
# Disk-On-Chip Device Drivers
#
# CONFIG_MTD_DOCG3 is not set
# CONFIG_MTD_NAND is not set
# CONFIG_MTD_ONENAND is not set

#
# LPDDR & LPDDR2 PCM memory drivers
#
# CONFIG_MTD_LPDDR is not set
# CONFIG_MTD_SPI_NOR is not set
CONFIG_MTD_UBI=m
CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_MTD_UBI_BEB_LIMIT=20
# CONFIG_MTD_UBI_FASTMAP is not set
# CONFIG_MTD_UBI_GLUEBI is not set
# CONFIG_MTD_UBI_BLOCK is not set
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
CONFIG_PARPORT_SERIAL=m
# CONFIG_PARPORT_PC_FIFO is not set
# CONFIG_PARPORT_PC_SUPERIO is not set
# CONFIG_PARPORT_GSC is not set
# CONFIG_PARPORT_AX88796 is not set
CONFIG_PARPORT_1284=y
CONFIG_PARPORT_NOT_PC=y
CONFIG_PNP=y
# CONFIG_PNP_DEBUG_MESSAGES is not set

#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
CONFIG_BLK_DEV_NULL_BLK=m
CONFIG_BLK_DEV_FD=m
# CONFIG_PARIDE is not set
CONFIG_BLK_DEV_PCIESSD_MTIP32XX=m
# CONFIG_ZRAM is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_LOOP_MIN_COUNT=0
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SKD is not set
CONFIG_BLK_DEV_OSD=m
CONFIG_BLK_DEV_SX8=m
CONFIG_BLK_DEV_RAM=m
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=16384
# CONFIG_BLK_DEV_RAM_DAX is not set
CONFIG_CDROM_PKTCDVD=m
CONFIG_CDROM_PKTCDVD_BUFFERS=8
# CONFIG_CDROM_PKTCDVD_WCACHE is not set
CONFIG_ATA_OVER_ETH=m
CONFIG_XEN_BLKDEV_FRONTEND=m
# CONFIG_XEN_BLKDEV_BACKEND is not set
CONFIG_VIRTIO_BLK=y
# CONFIG_VIRTIO_BLK_SCSI is not set
# CONFIG_BLK_DEV_HD is not set
# CONFIG_BLK_DEV_RBD is not set
CONFIG_BLK_DEV_RSXX=m
CONFIG_NVME_CORE=m
CONFIG_BLK_DEV_NVME=m
# CONFIG_BLK_DEV_NVME_SCSI is not set
# CONFIG_NVME_FC is not set
# CONFIG_NVME_TARGET is not set

#
# Misc devices
#
CONFIG_SENSORS_LIS3LV02D=m
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_IBM_ASM is not set
# CONFIG_PHANTOM is not set
CONFIG_SGI_IOC4=m
CONFIG_TIFM_CORE=m
CONFIG_TIFM_7XX1=m
# CONFIG_ICS932S401 is not set
CONFIG_ENCLOSURE_SERVICES=m
CONFIG_SGI_XP=m
CONFIG_HP_ILO=m
CONFIG_SGI_GRU=m
# CONFIG_SGI_GRU_DEBUG is not set
CONFIG_APDS9802ALS=m
CONFIG_ISL29003=m
CONFIG_ISL29020=m
CONFIG_SENSORS_TSL2550=m
CONFIG_SENSORS_BH1770=m
CONFIG_SENSORS_APDS990X=m
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_TI_DAC7512 is not set
CONFIG_VMWARE_BALLOON=m
# CONFIG_USB_SWITCH_FSA9480 is not set
# CONFIG_LATTICE_ECP3_CONFIG is not set
# CONFIG_SRAM is not set
# CONFIG_PANEL is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
CONFIG_EEPROM_AT24=m
# CONFIG_EEPROM_AT25 is not set
CONFIG_EEPROM_LEGACY=m
CONFIG_EEPROM_MAX6875=m
CONFIG_EEPROM_93CX6=m
# CONFIG_EEPROM_93XX46 is not set
# CONFIG_EEPROM_IDT_89HPESX is not set
CONFIG_CB710_CORE=m
# CONFIG_CB710_DEBUG is not set
CONFIG_CB710_DEBUG_ASSUMPTIONS=y

#
# Texas Instruments shared transport line discipline
#
# CONFIG_TI_ST is not set
CONFIG_SENSORS_LIS3_I2C=m

#
# Altera FPGA firmware download module
#
CONFIG_ALTERA_STAPL=m
CONFIG_INTEL_MEI=y
CONFIG_INTEL_MEI_ME=y
# CONFIG_INTEL_MEI_TXE is not set
CONFIG_VMWARE_VMCI=m

#
# Intel MIC Bus Driver
#
# CONFIG_INTEL_MIC_BUS is not set

#
# SCIF Bus Driver
#
# CONFIG_SCIF_BUS is not set

#
# VOP Bus Driver
#
# CONFIG_VOP_BUS is not set

#
# Intel MIC Host Driver
#

#
# Intel MIC Card Driver
#

#
# SCIF Driver
#

#
# Intel MIC Coprocessor State Management (COSM) Drivers
#

#
# VOP Driver
#
# CONFIG_GENWQE is not set
# CONFIG_ECHO is not set
# CONFIG_CXL_BASE is not set
# CONFIG_CXL_AFU_DRIVER_OPS is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
CONFIG_SCSI_NETLINK=y
# CONFIG_SCSI_MQ_DEFAULT is not set
CONFIG_SCSI_PROC_FS=y

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=m
CONFIG_CHR_DEV_ST=m
CONFIG_CHR_DEV_OSST=m
CONFIG_BLK_DEV_SR=m
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_CHR_DEV_SG=m
CONFIG_CHR_DEV_SCH=m
CONFIG_SCSI_ENCLOSURE=m
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_SCAN_ASYNC=y

#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=m
CONFIG_SCSI_FC_ATTRS=m
CONFIG_SCSI_ISCSI_ATTRS=m
CONFIG_SCSI_SAS_ATTRS=m
CONFIG_SCSI_SAS_LIBSAS=m
CONFIG_SCSI_SAS_ATA=y
CONFIG_SCSI_SAS_HOST_SMP=y
CONFIG_SCSI_SRP_ATTRS=m
CONFIG_SCSI_LOWLEVEL=y
CONFIG_ISCSI_TCP=m
CONFIG_ISCSI_BOOT_SYSFS=m
CONFIG_SCSI_CXGB3_ISCSI=m
CONFIG_SCSI_CXGB4_ISCSI=m
CONFIG_SCSI_BNX2_ISCSI=m
CONFIG_SCSI_BNX2X_FCOE=m
CONFIG_BE2ISCSI=m
# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
CONFIG_SCSI_HPSA=m
CONFIG_SCSI_3W_9XXX=m
CONFIG_SCSI_3W_SAS=m
# CONFIG_SCSI_ACARD is not set
CONFIG_SCSI_AACRAID=m
# CONFIG_SCSI_AIC7XXX is not set
CONFIG_SCSI_AIC79XX=m
CONFIG_AIC79XX_CMDS_PER_DEVICE=4
CONFIG_AIC79XX_RESET_DELAY_MS=15000
# CONFIG_AIC79XX_DEBUG_ENABLE is not set
CONFIG_AIC79XX_DEBUG_MASK=0
# CONFIG_AIC79XX_REG_PRETTY_PRINT is not set
# CONFIG_SCSI_AIC94XX is not set
CONFIG_SCSI_MVSAS=m
# CONFIG_SCSI_MVSAS_DEBUG is not set
CONFIG_SCSI_MVSAS_TASKLET=y
CONFIG_SCSI_MVUMI=m
# CONFIG_SCSI_DPT_I2O is not set
# CONFIG_SCSI_ADVANSYS is not set
CONFIG_SCSI_ARCMSR=m
# CONFIG_SCSI_ESAS2R is not set
# CONFIG_MEGARAID_NEWGEN is not set
# CONFIG_MEGARAID_LEGACY is not set
CONFIG_MEGARAID_SAS=m
CONFIG_SCSI_MPT3SAS=m
CONFIG_SCSI_MPT2SAS_MAX_SGE=128
CONFIG_SCSI_MPT3SAS_MAX_SGE=128
CONFIG_SCSI_MPT2SAS=m
# CONFIG_SCSI_SMARTPQI is not set
CONFIG_SCSI_UFSHCD=m
CONFIG_SCSI_UFSHCD_PCI=m
# CONFIG_SCSI_UFS_DWC_TC_PCI is not set
# CONFIG_SCSI_UFSHCD_PLATFORM is not set
CONFIG_SCSI_HPTIOP=m
# CONFIG_SCSI_BUSLOGIC is not set
CONFIG_VMWARE_PVSCSI=m
# CONFIG_XEN_SCSI_FRONTEND is not set
CONFIG_HYPERV_STORAGE=m
CONFIG_LIBFC=m
CONFIG_LIBFCOE=m
CONFIG_FCOE=m
CONFIG_FCOE_FNIC=m
# CONFIG_SCSI_SNIC is not set
# CONFIG_SCSI_DMX3191D is not set
# CONFIG_SCSI_EATA is not set
# CONFIG_SCSI_FUTURE_DOMAIN is not set
# CONFIG_SCSI_GDTH is not set
CONFIG_SCSI_ISCI=m
# CONFIG_SCSI_IPS is not set
CONFIG_SCSI_INITIO=m
# CONFIG_SCSI_INIA100 is not set
# CONFIG_SCSI_PPA is not set
# CONFIG_SCSI_IMM is not set
CONFIG_SCSI_STEX=m
# CONFIG_SCSI_SYM53C8XX_2 is not set
CONFIG_SCSI_IPR=m
CONFIG_SCSI_IPR_TRACE=y
CONFIG_SCSI_IPR_DUMP=y
# CONFIG_SCSI_QLOGIC_1280 is not set
CONFIG_SCSI_QLA_FC=m
# CONFIG_TCM_QLA2XXX is not set
CONFIG_SCSI_QLA_ISCSI=m
# CONFIG_SCSI_LPFC is not set
# CONFIG_SCSI_DC395x is not set
# CONFIG_SCSI_AM53C974 is not set
# CONFIG_SCSI_WD719X is not set
CONFIG_SCSI_DEBUG=m
CONFIG_SCSI_PMCRAID=m
CONFIG_SCSI_PM8001=m
# CONFIG_SCSI_BFA_FC is not set
CONFIG_SCSI_VIRTIO=m
CONFIG_SCSI_CHELSIO_FCOE=m
CONFIG_SCSI_DH=y
CONFIG_SCSI_DH_RDAC=y
CONFIG_SCSI_DH_HP_SW=y
CONFIG_SCSI_DH_EMC=y
CONFIG_SCSI_DH_ALUA=y
CONFIG_SCSI_OSD_INITIATOR=m
CONFIG_SCSI_OSD_ULD=m
CONFIG_SCSI_OSD_DPRINT_SENSE=1
# CONFIG_SCSI_OSD_DEBUG is not set
CONFIG_ATA=m
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_VERBOSE_ERROR=y
CONFIG_ATA_ACPI=y
# CONFIG_SATA_ZPODD is not set
CONFIG_SATA_PMP=y

#
# Controllers with non-SFF native interface
#
CONFIG_SATA_AHCI=m
CONFIG_SATA_AHCI_PLATFORM=m
# CONFIG_SATA_INIC162X is not set
CONFIG_SATA_ACARD_AHCI=m
CONFIG_SATA_SIL24=m
CONFIG_ATA_SFF=y

#
# SFF controllers with custom DMA interface
#
CONFIG_PDC_ADMA=m
CONFIG_SATA_QSTOR=m
CONFIG_SATA_SX4=m
CONFIG_ATA_BMDMA=y

#
# SATA SFF controllers with BMDMA
#
CONFIG_ATA_PIIX=m
# CONFIG_SATA_DWC is not set
CONFIG_SATA_MV=m
CONFIG_SATA_NV=m
CONFIG_SATA_PROMISE=m
CONFIG_SATA_SIL=m
CONFIG_SATA_SIS=m
CONFIG_SATA_SVW=m
CONFIG_SATA_ULI=m
CONFIG_SATA_VIA=m
CONFIG_SATA_VITESSE=m

#
# PATA SFF controllers with BMDMA
#
CONFIG_PATA_ALI=m
CONFIG_PATA_AMD=m
CONFIG_PATA_ARTOP=m
CONFIG_PATA_ATIIXP=m
CONFIG_PATA_ATP867X=m
CONFIG_PATA_CMD64X=m
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
CONFIG_PATA_HPT366=m
CONFIG_PATA_HPT37X=m
CONFIG_PATA_HPT3X2N=m
CONFIG_PATA_HPT3X3=m
# CONFIG_PATA_HPT3X3_DMA is not set
CONFIG_PATA_IT8213=m
CONFIG_PATA_IT821X=m
CONFIG_PATA_JMICRON=m
CONFIG_PATA_MARVELL=m
CONFIG_PATA_NETCELL=m
CONFIG_PATA_NINJA32=m
# CONFIG_PATA_NS87415 is not set
CONFIG_PATA_OLDPIIX=m
# CONFIG_PATA_OPTIDMA is not set
CONFIG_PATA_PDC2027X=m
CONFIG_PATA_PDC_OLD=m
# CONFIG_PATA_RADISYS is not set
CONFIG_PATA_RDC=m
CONFIG_PATA_SCH=m
CONFIG_PATA_SERVERWORKS=m
CONFIG_PATA_SIL680=m
CONFIG_PATA_SIS=m
CONFIG_PATA_TOSHIBA=m
# CONFIG_PATA_TRIFLEX is not set
CONFIG_PATA_VIA=m
# CONFIG_PATA_WINBOND is not set

#
# PIO-only SFF controllers
#
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_PLATFORM is not set
# CONFIG_PATA_RZ1000 is not set

#
# Generic fallback / legacy drivers
#
CONFIG_PATA_ACPI=m
CONFIG_ATA_GENERIC=m
# CONFIG_PATA_LEGACY is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
CONFIG_MD_AUTODETECT=y
CONFIG_MD_LINEAR=m
CONFIG_MD_RAID0=m
CONFIG_MD_RAID1=m
CONFIG_MD_RAID10=m
CONFIG_MD_RAID456=m
CONFIG_MD_MULTIPATH=m
CONFIG_MD_FAULTY=m
# CONFIG_MD_CLUSTER is not set
# CONFIG_BCACHE is not set
CONFIG_BLK_DEV_DM_BUILTIN=y
CONFIG_BLK_DEV_DM=m
# CONFIG_DM_MQ_DEFAULT is not set
CONFIG_DM_DEBUG=y
CONFIG_DM_BUFIO=m
# CONFIG_DM_DEBUG_BLOCK_MANAGER_LOCKING is not set
CONFIG_DM_BIO_PRISON=m
CONFIG_DM_PERSISTENT_DATA=m
CONFIG_DM_CRYPT=m
CONFIG_DM_SNAPSHOT=m
CONFIG_DM_THIN_PROVISIONING=m
CONFIG_DM_CACHE=m
CONFIG_DM_CACHE_SMQ=m
CONFIG_DM_CACHE_CLEANER=m
# CONFIG_DM_ERA is not set
CONFIG_DM_MIRROR=m
CONFIG_DM_LOG_USERSPACE=m
CONFIG_DM_RAID=m
CONFIG_DM_ZERO=m
CONFIG_DM_MULTIPATH=m
CONFIG_DM_MULTIPATH_QL=m
CONFIG_DM_MULTIPATH_ST=m
CONFIG_DM_DELAY=m
CONFIG_DM_UEVENT=y
CONFIG_DM_FLAKEY=m
CONFIG_DM_VERITY=m
# CONFIG_DM_VERITY_FEC is not set
CONFIG_DM_SWITCH=m
# CONFIG_DM_LOG_WRITES is not set
CONFIG_TARGET_CORE=m
CONFIG_TCM_IBLOCK=m
CONFIG_TCM_FILEIO=m
CONFIG_TCM_PSCSI=m
# CONFIG_TCM_USER2 is not set
CONFIG_LOOPBACK_TARGET=m
CONFIG_TCM_FC=m
CONFIG_ISCSI_TARGET=m
# CONFIG_ISCSI_TARGET_CXGB4 is not set
# CONFIG_SBP_TARGET is not set
CONFIG_FUSION=y
CONFIG_FUSION_SPI=m
# CONFIG_FUSION_FC is not set
CONFIG_FUSION_SAS=m
CONFIG_FUSION_MAX_SGE=128
CONFIG_FUSION_CTL=m
CONFIG_FUSION_LOGGING=y

#
# IEEE 1394 (FireWire) support
#
CONFIG_FIREWIRE=m
CONFIG_FIREWIRE_OHCI=m
CONFIG_FIREWIRE_SBP2=m
CONFIG_FIREWIRE_NET=m
# CONFIG_FIREWIRE_NOSY is not set
CONFIG_MACINTOSH_DRIVERS=y
CONFIG_MAC_EMUMOUSEBTN=y
CONFIG_NETDEVICES=y
CONFIG_MII=y
CONFIG_NET_CORE=y
CONFIG_BONDING=m
CONFIG_DUMMY=m
# CONFIG_EQUALIZER is not set
CONFIG_NET_FC=y
CONFIG_IFB=m
CONFIG_NET_TEAM=m
CONFIG_NET_TEAM_MODE_BROADCAST=m
CONFIG_NET_TEAM_MODE_ROUNDROBIN=m
CONFIG_NET_TEAM_MODE_RANDOM=m
CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=m
CONFIG_NET_TEAM_MODE_LOADBALANCE=m
CONFIG_MACVLAN=m
CONFIG_MACVTAP=m
CONFIG_VXLAN=m
# CONFIG_GENEVE is not set
# CONFIG_GTP is not set
# CONFIG_MACSEC is not set
CONFIG_NETCONSOLE=m
CONFIG_NETCONSOLE_DYNAMIC=y
CONFIG_NETPOLL=y
CONFIG_NET_POLL_CONTROLLER=y
CONFIG_TUN=m
CONFIG_TAP=m
# CONFIG_TUN_VNET_CROSS_LE is not set
CONFIG_VETH=m
CONFIG_VIRTIO_NET=y
CONFIG_NLMON=m
# CONFIG_ARCNET is not set
# CONFIG_ATM_DRIVERS is not set

#
# CAIF transport drivers
#

#
# Distributed Switch Architecture drivers
#
CONFIG_ETHERNET=y
CONFIG_MDIO=y
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_NET_VENDOR_ADAPTEC is not set
CONFIG_NET_VENDOR_AGERE=y
# CONFIG_ET131X is not set
CONFIG_NET_VENDOR_ALACRITECH=y
# CONFIG_SLICOSS is not set
# CONFIG_NET_VENDOR_ALTEON is not set
# CONFIG_ALTERA_TSE is not set
CONFIG_NET_VENDOR_AMAZON=y
# CONFIG_ENA_ETHERNET is not set
# CONFIG_NET_VENDOR_AMD is not set
CONFIG_NET_VENDOR_AQUANTIA=y
# CONFIG_AQTION is not set
CONFIG_NET_VENDOR_ARC=y
CONFIG_NET_VENDOR_ATHEROS=y
CONFIG_ATL2=m
CONFIG_ATL1=m
CONFIG_ATL1E=m
CONFIG_ATL1C=m
CONFIG_ALX=m
# CONFIG_NET_VENDOR_AURORA is not set
CONFIG_NET_CADENCE=y
# CONFIG_MACB is not set
CONFIG_NET_VENDOR_BROADCOM=y
CONFIG_B44=m
CONFIG_B44_PCI_AUTOSELECT=y
CONFIG_B44_PCICORE_AUTOSELECT=y
CONFIG_B44_PCI=y
# CONFIG_BCMGENET is not set
CONFIG_BNX2=m
CONFIG_CNIC=m
CONFIG_TIGON3=y
CONFIG_TIGON3_HWMON=y
# CONFIG_BNX2X is not set
# CONFIG_BNXT is not set
CONFIG_NET_VENDOR_BROCADE=y
CONFIG_BNA=m
CONFIG_NET_VENDOR_CAVIUM=y
# CONFIG_THUNDER_NIC_PF is not set
# CONFIG_THUNDER_NIC_VF is not set
# CONFIG_THUNDER_NIC_BGX is not set
# CONFIG_THUNDER_NIC_RGX is not set
# CONFIG_LIQUIDIO is not set
# CONFIG_LIQUIDIO_VF is not set
CONFIG_NET_VENDOR_CHELSIO=y
# CONFIG_CHELSIO_T1 is not set
CONFIG_CHELSIO_T3=m
CONFIG_CHELSIO_T4=m
# CONFIG_CHELSIO_T4_DCB is not set
CONFIG_CHELSIO_T4VF=m
CONFIG_CHELSIO_LIB=m
CONFIG_NET_VENDOR_CISCO=y
CONFIG_ENIC=m
# CONFIG_CX_ECAT is not set
CONFIG_DNET=m
CONFIG_NET_VENDOR_DEC=y
CONFIG_NET_TULIP=y
CONFIG_DE2104X=m
CONFIG_DE2104X_DSL=0
CONFIG_TULIP=y
# CONFIG_TULIP_MWI is not set
CONFIG_TULIP_MMIO=y
# CONFIG_TULIP_NAPI is not set
CONFIG_DE4X5=m
CONFIG_WINBOND_840=m
CONFIG_DM9102=m
CONFIG_ULI526X=m
CONFIG_PCMCIA_XIRCOM=m
# CONFIG_NET_VENDOR_DLINK is not set
CONFIG_NET_VENDOR_EMULEX=y
CONFIG_BE2NET=m
CONFIG_BE2NET_HWMON=y
CONFIG_NET_VENDOR_EZCHIP=y
# CONFIG_NET_VENDOR_EXAR is not set
# CONFIG_NET_VENDOR_HP is not set
CONFIG_NET_VENDOR_INTEL=y
# CONFIG_E100 is not set
CONFIG_E1000=y
CONFIG_E1000E=y
CONFIG_E1000E_HWTS=y
CONFIG_IGB=y
CONFIG_IGB_HWMON=y
CONFIG_IGBVF=m
CONFIG_IXGB=m
CONFIG_IXGBE=y
CONFIG_IXGBE_HWMON=y
CONFIG_IXGBE_DCB=y
CONFIG_IXGBEVF=m
CONFIG_I40E=m
# CONFIG_I40E_DCB is not set
# CONFIG_I40EVF is not set
# CONFIG_FM10K is not set
# CONFIG_NET_VENDOR_I825XX is not set
CONFIG_JME=m
CONFIG_NET_VENDOR_MARVELL=y
CONFIG_MVMDIO=m
CONFIG_SKGE=m
CONFIG_SKGE_DEBUG=y
CONFIG_SKGE_GENESIS=y
CONFIG_SKY2=m
CONFIG_SKY2_DEBUG=y
CONFIG_NET_VENDOR_MELLANOX=y
CONFIG_MLX4_EN=m
CONFIG_MLX4_EN_DCB=y
CONFIG_MLX4_CORE=m
CONFIG_MLX4_DEBUG=y
# CONFIG_MLX5_CORE is not set
# CONFIG_MLXSW_CORE is not set
# CONFIG_NET_VENDOR_MICREL is not set
CONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_ENC28J60 is not set
# CONFIG_ENCX24J600 is not set
CONFIG_NET_VENDOR_MYRI=y
CONFIG_MYRI10GE=m
# CONFIG_FEALNX is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
CONFIG_NET_VENDOR_NETRONOME=y
# CONFIG_NFP is not set
# CONFIG_NET_VENDOR_NVIDIA is not set
CONFIG_NET_VENDOR_OKI=y
CONFIG_ETHOC=m
CONFIG_NET_PACKET_ENGINE=y
# CONFIG_HAMACHI is not set
CONFIG_YELLOWFIN=m
CONFIG_NET_VENDOR_QLOGIC=y
CONFIG_QLA3XXX=m
CONFIG_QLCNIC=m
CONFIG_QLCNIC_SRIOV=y
CONFIG_QLCNIC_DCB=y
CONFIG_QLCNIC_HWMON=y
CONFIG_QLGE=m
CONFIG_NETXEN_NIC=m
# CONFIG_QED is not set
CONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_QCOM_EMAC is not set
CONFIG_NET_VENDOR_REALTEK=y
# CONFIG_ATP is not set
CONFIG_8139CP=y
CONFIG_8139TOO=y
CONFIG_8139TOO_PIO=y
# CONFIG_8139TOO_TUNE_TWISTER is not set
CONFIG_8139TOO_8129=y
# CONFIG_8139_OLD_RX_RESET is not set
CONFIG_R8169=y
CONFIG_NET_VENDOR_RENESAS=y
# CONFIG_NET_VENDOR_RDC is not set
CONFIG_NET_VENDOR_ROCKER=y
CONFIG_NET_VENDOR_SAMSUNG=y
# CONFIG_SXGBE_ETH is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SILAN is not set
# CONFIG_NET_VENDOR_SIS is not set
CONFIG_NET_VENDOR_SOLARFLARE=y
CONFIG_SFC=m
CONFIG_SFC_MTD=y
CONFIG_SFC_MCDI_MON=y
CONFIG_SFC_SRIOV=y
CONFIG_SFC_MCDI_LOGGING=y
# CONFIG_SFC_FALCON is not set
CONFIG_NET_VENDOR_SMSC=y
CONFIG_EPIC100=m
# CONFIG_SMSC911X is not set
CONFIG_SMSC9420=m
# CONFIG_NET_VENDOR_STMICRO is not set
# CONFIG_NET_VENDOR_SUN is not set
# CONFIG_NET_VENDOR_TEHUTI is not set
# CONFIG_NET_VENDOR_TI is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_NET_VENDOR_SYNOPSYS=y
# CONFIG_DWC_XLGMAC is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_NET_SB1000 is not set
CONFIG_MDIO_DEVICE=y
CONFIG_MDIO_BITBANG=m
# CONFIG_MDIO_GPIO is not set
# CONFIG_MDIO_OCTEON is not set
# CONFIG_MDIO_THUNDER is not set
CONFIG_PHYLIB=y
CONFIG_SWPHY=y
# CONFIG_LED_TRIGGER_PHY is not set

#
# MII PHY device drivers
#
CONFIG_AMD_PHY=m
# CONFIG_AQUANTIA_PHY is not set
CONFIG_AT803X_PHY=m
# CONFIG_BCM7XXX_PHY is not set
CONFIG_BCM87XX_PHY=m
CONFIG_BCM_NET_PHYLIB=m
CONFIG_BROADCOM_PHY=m
CONFIG_CICADA_PHY=m
CONFIG_DAVICOM_PHY=m
# CONFIG_DP83848_PHY is not set
# CONFIG_DP83867_PHY is not set
CONFIG_FIXED_PHY=y
CONFIG_ICPLUS_PHY=m
# CONFIG_INTEL_XWAY_PHY is not set
CONFIG_LSI_ET1011C_PHY=m
CONFIG_LXT_PHY=m
CONFIG_MARVELL_PHY=m
CONFIG_MICREL_PHY=m
# CONFIG_MICROCHIP_PHY is not set
# CONFIG_MICROSEMI_PHY is not set
CONFIG_NATIONAL_PHY=m
CONFIG_QSEMI_PHY=m
CONFIG_REALTEK_PHY=m
CONFIG_SMSC_PHY=m
CONFIG_STE10XP=m
# CONFIG_TERANETICS_PHY is not set
CONFIG_VITESSE_PHY=m
# CONFIG_XILINX_GMII2RGMII is not set
# CONFIG_MICREL_KS8995MA is not set
# CONFIG_PLIP is not set
CONFIG_PPP=m
CONFIG_PPP_BSDCOMP=m
CONFIG_PPP_DEFLATE=m
CONFIG_PPP_FILTER=y
CONFIG_PPP_MPPE=m
CONFIG_PPP_MULTILINK=y
CONFIG_PPPOATM=m
CONFIG_PPPOE=m
CONFIG_PPTP=m
CONFIG_PPPOL2TP=m
CONFIG_PPP_ASYNC=m
CONFIG_PPP_SYNC_TTY=m
CONFIG_SLIP=m
CONFIG_SLHC=m
CONFIG_SLIP_COMPRESSED=y
CONFIG_SLIP_SMART=y
# CONFIG_SLIP_MODE_SLIP6 is not set
CONFIG_USB_NET_DRIVERS=y
CONFIG_USB_CATC=y
CONFIG_USB_KAWETH=y
CONFIG_USB_PEGASUS=y
CONFIG_USB_RTL8150=y
CONFIG_USB_RTL8152=m
# CONFIG_USB_LAN78XX is not set
CONFIG_USB_USBNET=y
CONFIG_USB_NET_AX8817X=y
CONFIG_USB_NET_AX88179_178A=m
CONFIG_USB_NET_CDCETHER=y
CONFIG_USB_NET_CDC_EEM=y
CONFIG_USB_NET_CDC_NCM=m
# CONFIG_USB_NET_HUAWEI_CDC_NCM is not set
CONFIG_USB_NET_CDC_MBIM=m
CONFIG_USB_NET_DM9601=y
# CONFIG_USB_NET_SR9700 is not set
# CONFIG_USB_NET_SR9800 is not set
CONFIG_USB_NET_SMSC75XX=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_USB_NET_GL620A=y
CONFIG_USB_NET_NET1080=y
CONFIG_USB_NET_PLUSB=y
CONFIG_USB_NET_MCS7830=y
CONFIG_USB_NET_RNDIS_HOST=y
CONFIG_USB_NET_CDC_SUBSET_ENABLE=y
CONFIG_USB_NET_CDC_SUBSET=y
CONFIG_USB_ALI_M5632=y
CONFIG_USB_AN2720=y
CONFIG_USB_BELKIN=y
CONFIG_USB_ARMLINUX=y
CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_USB_NET_ZAURUS=y
CONFIG_USB_NET_CX82310_ETH=m
CONFIG_USB_NET_KALMIA=m
CONFIG_USB_NET_QMI_WWAN=m
CONFIG_USB_HSO=m
CONFIG_USB_NET_INT51X1=y
CONFIG_USB_IPHETH=y
CONFIG_USB_SIERRA_NET=y
CONFIG_USB_VL600=m
# CONFIG_USB_NET_CH9200 is not set
CONFIG_WLAN=y
# CONFIG_WIRELESS_WDS is not set
CONFIG_WLAN_VENDOR_ADMTEK=y
# CONFIG_ADM8211 is not set
CONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
# CONFIG_ATH5K is not set
# CONFIG_ATH5K_PCI is not set
# CONFIG_ATH9K is not set
# CONFIG_ATH9K_HTC is not set
# CONFIG_CARL9170 is not set
# CONFIG_ATH6KL is not set
# CONFIG_AR5523 is not set
# CONFIG_WIL6210 is not set
# CONFIG_ATH10K is not set
# CONFIG_WCN36XX is not set
CONFIG_WLAN_VENDOR_ATMEL=y
# CONFIG_ATMEL is not set
# CONFIG_AT76C50X_USB is not set
CONFIG_WLAN_VENDOR_BROADCOM=y
# CONFIG_B43 is not set
# CONFIG_B43LEGACY is not set
# CONFIG_BRCMSMAC is not set
# CONFIG_BRCMFMAC is not set
CONFIG_WLAN_VENDOR_CISCO=y
# CONFIG_AIRO is not set
CONFIG_WLAN_VENDOR_INTEL=y
# CONFIG_IPW2100 is not set
# CONFIG_IPW2200 is not set
# CONFIG_IWL4965 is not set
# CONFIG_IWL3945 is not set
# CONFIG_IWLWIFI is not set
CONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
# CONFIG_HERMES is not set
# CONFIG_P54_COMMON is not set
# CONFIG_PRISM54 is not set
CONFIG_WLAN_VENDOR_MARVELL=y
# CONFIG_LIBERTAS is not set
# CONFIG_LIBERTAS_THINFIRM is not set
# CONFIG_MWIFIEX is not set
# CONFIG_MWL8K is not set
CONFIG_WLAN_VENDOR_MEDIATEK=y
# CONFIG_MT7601U is not set
CONFIG_WLAN_VENDOR_RALINK=y
# CONFIG_RT2X00 is not set
CONFIG_WLAN_VENDOR_REALTEK=y
# CONFIG_RTL8180 is not set
# CONFIG_RTL8187 is not set
CONFIG_RTL_CARDS=m
# CONFIG_RTL8192CE is not set
# CONFIG_RTL8192SE is not set
# CONFIG_RTL8192DE is not set
# CONFIG_RTL8723AE is not set
# CONFIG_RTL8723BE is not set
# CONFIG_RTL8188EE is not set
# CONFIG_RTL8192EE is not set
# CONFIG_RTL8821AE is not set
# CONFIG_RTL8192CU is not set
# CONFIG_RTL8XXXU is not set
CONFIG_WLAN_VENDOR_RSI=y
# CONFIG_RSI_91X is not set
CONFIG_WLAN_VENDOR_ST=y
# CONFIG_CW1200 is not set
CONFIG_WLAN_VENDOR_TI=y
# CONFIG_WL1251 is not set
# CONFIG_WL12XX is not set
# CONFIG_WL18XX is not set
# CONFIG_WLCORE is not set
CONFIG_WLAN_VENDOR_ZYDAS=y
# CONFIG_USB_ZD1201 is not set
# CONFIG_ZD1211RW is not set
CONFIG_MAC80211_HWSIM=m
# CONFIG_USB_NET_RNDIS_WLAN is not set

#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#
CONFIG_WAN=y
# CONFIG_LANMEDIA is not set
CONFIG_HDLC=m
CONFIG_HDLC_RAW=m
# CONFIG_HDLC_RAW_ETH is not set
CONFIG_HDLC_CISCO=m
CONFIG_HDLC_FR=m
CONFIG_HDLC_PPP=m

#
# X.25/LAPB support is disabled
#
# CONFIG_PCI200SYN is not set
# CONFIG_WANXL is not set
# CONFIG_PC300TOO is not set
# CONFIG_FARSYNC is not set
# CONFIG_DSCC4 is not set
CONFIG_DLCI=m
CONFIG_DLCI_MAX=8
# CONFIG_SBNI is not set
CONFIG_IEEE802154_DRIVERS=m
CONFIG_IEEE802154_FAKELB=m
# CONFIG_IEEE802154_AT86RF230 is not set
# CONFIG_IEEE802154_MRF24J40 is not set
# CONFIG_IEEE802154_CC2520 is not set
# CONFIG_IEEE802154_ATUSB is not set
# CONFIG_IEEE802154_ADF7242 is not set
# CONFIG_IEEE802154_CA8210 is not set
CONFIG_XEN_NETDEV_FRONTEND=m
# CONFIG_XEN_NETDEV_BACKEND is not set
CONFIG_VMXNET3=m
# CONFIG_FUJITSU_ES is not set
CONFIG_HYPERV_NET=m
CONFIG_ISDN=y
CONFIG_ISDN_I4L=m
CONFIG_ISDN_PPP=y
CONFIG_ISDN_PPP_VJ=y
CONFIG_ISDN_MPP=y
CONFIG_IPPP_FILTER=y
# CONFIG_ISDN_PPP_BSDCOMP is not set
CONFIG_ISDN_AUDIO=y
CONFIG_ISDN_TTY_FAX=y

#
# ISDN feature submodules
#
CONFIG_ISDN_DIVERSION=m

#
# ISDN4Linux hardware drivers
#

#
# Passive cards
#
# CONFIG_ISDN_DRV_HISAX is not set
CONFIG_ISDN_CAPI=m
# CONFIG_CAPI_TRACE is not set
CONFIG_ISDN_CAPI_CAPI20=m
CONFIG_ISDN_CAPI_MIDDLEWARE=y
CONFIG_ISDN_CAPI_CAPIDRV=m
# CONFIG_ISDN_CAPI_CAPIDRV_VERBOSE is not set

#
# CAPI hardware drivers
#
CONFIG_CAPI_AVM=y
CONFIG_ISDN_DRV_AVMB1_B1PCI=m
CONFIG_ISDN_DRV_AVMB1_B1PCIV4=y
CONFIG_ISDN_DRV_AVMB1_T1PCI=m
CONFIG_ISDN_DRV_AVMB1_C4=m
# CONFIG_CAPI_EICON is not set
CONFIG_ISDN_DRV_GIGASET=m
CONFIG_GIGASET_CAPI=y
# CONFIG_GIGASET_I4L is not set
# CONFIG_GIGASET_DUMMYLL is not set
CONFIG_GIGASET_BASE=m
CONFIG_GIGASET_M105=m
CONFIG_GIGASET_M101=m
# CONFIG_GIGASET_DEBUG is not set
CONFIG_HYSDN=m
CONFIG_HYSDN_CAPI=y
CONFIG_MISDN=m
CONFIG_MISDN_DSP=m
CONFIG_MISDN_L1OIP=m

#
# mISDN hardware drivers
#
CONFIG_MISDN_HFCPCI=m
CONFIG_MISDN_HFCMULTI=m
CONFIG_MISDN_HFCUSB=m
CONFIG_MISDN_AVMFRITZ=m
CONFIG_MISDN_SPEEDFAX=m
CONFIG_MISDN_INFINEON=m
CONFIG_MISDN_W6692=m
CONFIG_MISDN_NETJET=m
CONFIG_MISDN_IPAC=m
CONFIG_MISDN_ISAR=m
CONFIG_ISDN_HDLC=m
# CONFIG_NVM is not set

#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_LEDS=y
CONFIG_INPUT_FF_MEMLESS=m
CONFIG_INPUT_POLLDEV=m
CONFIG_INPUT_SPARSEKMAP=m
# CONFIG_INPUT_MATRIXKMAP is not set

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_GPIO is not set
# CONFIG_KEYBOARD_GPIO_POLLED is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_TM2_TOUCHKEY is not set
# CONFIG_KEYBOARD_XTKBD is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_BYD=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_CYPRESS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
CONFIG_MOUSE_PS2_ELANTECH=y
CONFIG_MOUSE_PS2_SENTELIC=y
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
CONFIG_MOUSE_PS2_FOCALTECH=y
# CONFIG_MOUSE_PS2_VMMOUSE is not set
CONFIG_MOUSE_SERIAL=m
CONFIG_MOUSE_APPLETOUCH=m
CONFIG_MOUSE_BCM5974=m
CONFIG_MOUSE_CYAPA=m
# CONFIG_MOUSE_ELAN_I2C is not set
CONFIG_MOUSE_VSXXXAA=m
# CONFIG_MOUSE_GPIO is not set
CONFIG_MOUSE_SYNAPTICS_I2C=m
CONFIG_MOUSE_SYNAPTICS_USB=m
# CONFIG_INPUT_JOYSTICK is not set
CONFIG_INPUT_TABLET=y
CONFIG_TABLET_USB_ACECAD=m
CONFIG_TABLET_USB_AIPTEK=m
CONFIG_TABLET_USB_GTCO=m
# CONFIG_TABLET_USB_HANWANG is not set
CONFIG_TABLET_USB_KBTAB=m
# CONFIG_TABLET_USB_PEGASUS is not set
# CONFIG_TABLET_SERIAL_WACOM4 is not set
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_PROPERTIES=y
# CONFIG_TOUCHSCREEN_ADS7846 is not set
# CONFIG_TOUCHSCREEN_AD7877 is not set
# CONFIG_TOUCHSCREEN_AD7879 is not set
# CONFIG_TOUCHSCREEN_ATMEL_MXT is not set
# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
# CONFIG_TOUCHSCREEN_CYTTSP4_CORE is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_EGALAX_SERIAL is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GOODIX is not set
# CONFIG_TOUCHSCREEN_ILI210X is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_EKTF2127 is not set
# CONFIG_TOUCHSCREEN_ELAN is not set
# CONFIG_TOUCHSCREEN_ELO is not set
CONFIG_TOUCHSCREEN_WACOM_W8001=m
CONFIG_TOUCHSCREEN_WACOM_I2C=m
# CONFIG_TOUCHSCREEN_MAX11801 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MMS114 is not set
# CONFIG_TOUCHSCREEN_MELFAS_MIP4 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_PIXCIR is not set
# CONFIG_TOUCHSCREEN_WDT87XX_I2C is not set
# CONFIG_TOUCHSCREEN_WM97XX is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
# CONFIG_TOUCHSCREEN_TSC2004 is not set
# CONFIG_TOUCHSCREEN_TSC2005 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_TOUCHSCREEN_RM_TS is not set
# CONFIG_TOUCHSCREEN_SILEAD is not set
# CONFIG_TOUCHSCREEN_SIS_I2C is not set
# CONFIG_TOUCHSCREEN_ST1232 is not set
# CONFIG_TOUCHSCREEN_SUR40 is not set
# CONFIG_TOUCHSCREEN_SURFACE3_SPI is not set
# CONFIG_TOUCHSCREEN_SX8654 is not set
# CONFIG_TOUCHSCREEN_TPS6507X is not set
# CONFIG_TOUCHSCREEN_ZET6223 is not set
# CONFIG_TOUCHSCREEN_ZFORCE is not set
# CONFIG_TOUCHSCREEN_ROHM_BU21023 is not set
CONFIG_INPUT_MISC=y
# CONFIG_INPUT_AD714X is not set
# CONFIG_INPUT_BMA150 is not set
# CONFIG_INPUT_E3X0_BUTTON is not set
CONFIG_INPUT_PCSPKR=m
# CONFIG_INPUT_MMA8450 is not set
CONFIG_INPUT_APANEL=m
# CONFIG_INPUT_GP2A is not set
# CONFIG_INPUT_GPIO_BEEPER is not set
# CONFIG_INPUT_GPIO_TILT_POLLED is not set
# CONFIG_INPUT_GPIO_DECODER is not set
CONFIG_INPUT_ATLAS_BTNS=m
CONFIG_INPUT_ATI_REMOTE2=m
CONFIG_INPUT_KEYSPAN_REMOTE=m
# CONFIG_INPUT_KXTJ9 is not set
CONFIG_INPUT_POWERMATE=m
CONFIG_INPUT_YEALINK=m
CONFIG_INPUT_CM109=m
CONFIG_INPUT_UINPUT=m
# CONFIG_INPUT_PCF8574 is not set
# CONFIG_INPUT_PWM_BEEPER is not set
# CONFIG_INPUT_GPIO_ROTARY_ENCODER is not set
# CONFIG_INPUT_ADXL34X is not set
# CONFIG_INPUT_IMS_PCU is not set
# CONFIG_INPUT_CMA3000 is not set
CONFIG_INPUT_XEN_KBDDEV_FRONTEND=m
# CONFIG_INPUT_IDEAPAD_SLIDEBAR is not set
# CONFIG_INPUT_DRV260X_HAPTICS is not set
# CONFIG_INPUT_DRV2665_HAPTICS is not set
# CONFIG_INPUT_DRV2667_HAPTICS is not set
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PARKBD is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=m
CONFIG_SERIO_ALTERA_PS2=m
# CONFIG_SERIO_PS2MULT is not set
CONFIG_SERIO_ARC_PS2=m
CONFIG_HYPERV_KEYBOARD=m
# CONFIG_USERIO is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_ROCKETPORT is not set
CONFIG_CYCLADES=m
# CONFIG_CYZ_INTR is not set
CONFIG_MOXA_INTELLIO=m
CONFIG_MOXA_SMARTIO=m
CONFIG_SYNCLINK=m
CONFIG_SYNCLINKMP=m
CONFIG_SYNCLINK_GT=m
CONFIG_NOZOMI=m
# CONFIG_ISI is not set
CONFIG_N_HDLC=m
CONFIG_N_GSM=m
# CONFIG_TRACE_SINK is not set
CONFIG_DEVMEM=y
# CONFIG_DEVKMEM is not set

#
# Serial drivers
#
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
CONFIG_SERIAL_8250_PNP=y
# CONFIG_SERIAL_8250_FINTEK is not set
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DMA=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_EXAR=y
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_SERIAL_8250_DETECT_IRQ is not set
CONFIG_SERIAL_8250_RSA=y
# CONFIG_SERIAL_8250_FSL is not set
CONFIG_SERIAL_8250_DW=y
# CONFIG_SERIAL_8250_RT288X is not set
CONFIG_SERIAL_8250_LPSS=y
CONFIG_SERIAL_8250_MID=y
# CONFIG_SERIAL_8250_MOXA is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_MAX3100 is not set
# CONFIG_SERIAL_MAX310X is not set
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_SERIAL_JSM=m
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_IFX6X60 is not set
CONFIG_SERIAL_ARC=m
CONFIG_SERIAL_ARC_NR_PORTS=1
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_TTY_PRINTK is not set
CONFIG_PRINTER=m
# CONFIG_LP_CONSOLE is not set
CONFIG_PPDEV=m
CONFIG_HVC_DRIVER=y
CONFIG_HVC_IRQ=y
CONFIG_HVC_XEN=y
CONFIG_HVC_XEN_FRONTEND=y
CONFIG_VIRTIO_CONSOLE=y
CONFIG_IPMI_HANDLER=m
# CONFIG_IPMI_PANIC_EVENT is not set
CONFIG_IPMI_DEVICE_INTERFACE=m
CONFIG_IPMI_SI=m
# CONFIG_IPMI_SSIF is not set
CONFIG_IPMI_WATCHDOG=m
CONFIG_IPMI_POWEROFF=m
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_TIMERIOMEM=m
CONFIG_HW_RANDOM_INTEL=m
CONFIG_HW_RANDOM_AMD=m
CONFIG_HW_RANDOM_VIA=m
CONFIG_HW_RANDOM_VIRTIO=y
CONFIG_HW_RANDOM_TPM=m
CONFIG_NVRAM=y
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_MWAVE is not set
CONFIG_RAW_DRIVER=y
CONFIG_MAX_RAW_DEVS=8192
CONFIG_HPET=y
CONFIG_HPET_MMAP=y
# CONFIG_HPET_MMAP_DEFAULT is not set
CONFIG_HANGCHECK_TIMER=m
CONFIG_UV_MMTIMER=m
CONFIG_TCG_TPM=y
CONFIG_TCG_TIS_CORE=y
CONFIG_TCG_TIS=y
# CONFIG_TCG_TIS_SPI is not set
# CONFIG_TCG_TIS_I2C_ATMEL is not set
# CONFIG_TCG_TIS_I2C_INFINEON is not set
# CONFIG_TCG_TIS_I2C_NUVOTON is not set
CONFIG_TCG_NSC=m
CONFIG_TCG_ATMEL=m
CONFIG_TCG_INFINEON=m
# CONFIG_TCG_XEN is not set
# CONFIG_TCG_CRB is not set
# CONFIG_TCG_VTPM_PROXY is not set
# CONFIG_TCG_TIS_ST33ZP24_I2C is not set
# CONFIG_TCG_TIS_ST33ZP24_SPI is not set
CONFIG_TELCLOCK=m
CONFIG_DEVPORT=y
# CONFIG_XILLYBUS is not set

#
# I2C support
#
CONFIG_I2C=y
CONFIG_ACPI_I2C_OPREGION=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=m
CONFIG_I2C_MUX=m

#
# Multiplexer I2C Chip support
#
# CONFIG_I2C_MUX_GPIO is not set
# CONFIG_I2C_MUX_PCA9541 is not set
# CONFIG_I2C_MUX_PCA954x is not set
# CONFIG_I2C_MUX_PINCTRL is not set
# CONFIG_I2C_MUX_REG is not set
# CONFIG_I2C_MUX_MLXCPLD is not set
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_SMBUS=y
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_ALGOPCA=m

#
# I2C Hardware Bus support
#

#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
CONFIG_I2C_AMD756=m
CONFIG_I2C_AMD756_S4882=m
CONFIG_I2C_AMD8111=m
CONFIG_I2C_I801=y
CONFIG_I2C_ISCH=m
CONFIG_I2C_ISMT=m
CONFIG_I2C_PIIX4=m
CONFIG_I2C_NFORCE2=m
CONFIG_I2C_NFORCE2_S4985=m
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
CONFIG_I2C_SIS96X=m
CONFIG_I2C_VIA=m
CONFIG_I2C_VIAPRO=m

#
# ACPI drivers
#
CONFIG_I2C_SCMI=m

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_CBUS_GPIO is not set
CONFIG_I2C_DESIGNWARE_CORE=m
CONFIG_I2C_DESIGNWARE_PLATFORM=m
CONFIG_I2C_DESIGNWARE_PCI=m
# CONFIG_I2C_DESIGNWARE_BAYTRAIL is not set
# CONFIG_I2C_EMEV2 is not set
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_OCORES is not set
CONFIG_I2C_PCA_PLATFORM=m
# CONFIG_I2C_PXA_PCI is not set
CONFIG_I2C_SIMTEC=m
# CONFIG_I2C_XILINX is not set

#
# External I2C/SMBus adapter drivers
#
CONFIG_I2C_DIOLAN_U2C=m
CONFIG_I2C_PARPORT=m
CONFIG_I2C_PARPORT_LIGHT=m
# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
# CONFIG_I2C_TAOS_EVM is not set
CONFIG_I2C_TINY_USB=m
CONFIG_I2C_VIPERBOARD=m

#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_MLXCPLD is not set
CONFIG_I2C_STUB=m
# CONFIG_I2C_SLAVE is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
CONFIG_SPI=y
# CONFIG_SPI_DEBUG is not set
CONFIG_SPI_MASTER=y

#
# SPI Master Controller Drivers
#
# CONFIG_SPI_ALTERA is not set
# CONFIG_SPI_AXI_SPI_ENGINE is not set
# CONFIG_SPI_BITBANG is not set
# CONFIG_SPI_BUTTERFLY is not set
# CONFIG_SPI_CADENCE is not set
CONFIG_SPI_DESIGNWARE=m
# CONFIG_SPI_DW_PCI is not set
# CONFIG_SPI_DW_MMIO is not set
# CONFIG_SPI_GPIO is not set
# CONFIG_SPI_LM70_LLP is not set
# CONFIG_SPI_OC_TINY is not set
CONFIG_SPI_PXA2XX=m
CONFIG_SPI_PXA2XX_PCI=m
# CONFIG_SPI_ROCKCHIP is not set
# CONFIG_SPI_SC18IS602 is not set
# CONFIG_SPI_XCOMM is not set
# CONFIG_SPI_XILINX is not set
# CONFIG_SPI_ZYNQMP_GQSPI is not set

#
# SPI Protocol Masters
#
# CONFIG_SPI_SPIDEV is not set
# CONFIG_SPI_LOOPBACK_TEST is not set
# CONFIG_SPI_TLE62X0 is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set

#
# PPS support
#
CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set

#
# PPS clients support
#
# CONFIG_PPS_CLIENT_KTIMER is not set
CONFIG_PPS_CLIENT_LDISC=m
CONFIG_PPS_CLIENT_PARPORT=m
CONFIG_PPS_CLIENT_GPIO=m

#
# PPS generators support
#

#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK=y
CONFIG_DP83640_PHY=m
CONFIG_PTP_1588_CLOCK_KVM=y
CONFIG_PINCTRL=y

#
# Pin controllers
#
CONFIG_PINMUX=y
CONFIG_PINCONF=y
CONFIG_GENERIC_PINCONF=y
# CONFIG_DEBUG_PINCTRL is not set
# CONFIG_PINCTRL_AMD is not set
# CONFIG_PINCTRL_SX150X is not set
CONFIG_PINCTRL_BAYTRAIL=y
# CONFIG_PINCTRL_CHERRYVIEW is not set
# CONFIG_PINCTRL_BROXTON is not set
# CONFIG_PINCTRL_GEMINILAKE is not set
# CONFIG_PINCTRL_SUNRISEPOINT is not set
CONFIG_GPIOLIB=y
CONFIG_GPIO_ACPI=y
CONFIG_GPIOLIB_IRQCHIP=y
# CONFIG_DEBUG_GPIO is not set
CONFIG_GPIO_SYSFS=y

#
# Memory mapped GPIO drivers
#
# CONFIG_GPIO_AMDPT is not set
# CONFIG_GPIO_DWAPB is not set
# CONFIG_GPIO_EXAR is not set
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_ICH is not set
CONFIG_GPIO_LYNXPOINT=m
CONFIG_GPIO_MOCKUP=y
# CONFIG_GPIO_VX855 is not set

#
# Port-mapped I/O GPIO drivers
#
# CONFIG_GPIO_F7188X is not set
# CONFIG_GPIO_IT87 is not set
# CONFIG_GPIO_SCH is not set
# CONFIG_GPIO_SCH311X is not set

#
# I2C GPIO expanders
#
# CONFIG_GPIO_ADP5588 is not set
# CONFIG_GPIO_MAX7300 is not set
# CONFIG_GPIO_MAX732X is not set
# CONFIG_GPIO_PCA953X is not set
# CONFIG_GPIO_PCF857X is not set
# CONFIG_GPIO_SX150X is not set
# CONFIG_GPIO_TPIC2810 is not set

#
# MFD GPIO expanders
#

#
# PCI GPIO expanders
#
# CONFIG_GPIO_AMD8111 is not set
# CONFIG_GPIO_ML_IOH is not set
# CONFIG_GPIO_PCI_IDIO_16 is not set
# CONFIG_GPIO_RDC321X is not set

#
# SPI GPIO expanders
#
# CONFIG_GPIO_MAX7301 is not set
# CONFIG_GPIO_MC33880 is not set
# CONFIG_GPIO_PISOSR is not set

#
# SPI or I2C GPIO expanders
#

#
# USB GPIO expanders
#
# CONFIG_GPIO_VIPERBOARD is not set
# CONFIG_W1 is not set
# CONFIG_POWER_AVS is not set
CONFIG_POWER_RESET=y
# CONFIG_POWER_RESET_RESTART is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_TEST_POWER is not set
# CONFIG_BATTERY_DS2780 is not set
# CONFIG_BATTERY_DS2781 is not set
# CONFIG_BATTERY_DS2782 is not set
# CONFIG_BATTERY_SBS is not set
# CONFIG_CHARGER_SBS is not set
# CONFIG_BATTERY_BQ27XXX is not set
# CONFIG_BATTERY_MAX17040 is not set
# CONFIG_BATTERY_MAX17042 is not set
# CONFIG_CHARGER_ISP1704 is not set
# CONFIG_CHARGER_MAX8903 is not set
# CONFIG_CHARGER_LP8727 is not set
# CONFIG_CHARGER_GPIO is not set
# CONFIG_CHARGER_BQ2415X is not set
# CONFIG_CHARGER_BQ24190 is not set
# CONFIG_CHARGER_BQ24257 is not set
# CONFIG_CHARGER_BQ24735 is not set
# CONFIG_CHARGER_BQ25890 is not set
CONFIG_CHARGER_SMB347=m
# CONFIG_BATTERY_GAUGE_LTC2941 is not set
# CONFIG_CHARGER_RT9455 is not set
CONFIG_HWMON=y
CONFIG_HWMON_VID=m
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
CONFIG_SENSORS_ABITUGURU=m
CONFIG_SENSORS_ABITUGURU3=m
# CONFIG_SENSORS_AD7314 is not set
CONFIG_SENSORS_AD7414=m
CONFIG_SENSORS_AD7418=m
CONFIG_SENSORS_ADM1021=m
CONFIG_SENSORS_ADM1025=m
CONFIG_SENSORS_ADM1026=m
CONFIG_SENSORS_ADM1029=m
CONFIG_SENSORS_ADM1031=m
CONFIG_SENSORS_ADM9240=m
CONFIG_SENSORS_ADT7X10=m
# CONFIG_SENSORS_ADT7310 is not set
CONFIG_SENSORS_ADT7410=m
CONFIG_SENSORS_ADT7411=m
CONFIG_SENSORS_ADT7462=m
CONFIG_SENSORS_ADT7470=m
CONFIG_SENSORS_ADT7475=m
CONFIG_SENSORS_ASC7621=m
CONFIG_SENSORS_K8TEMP=m
CONFIG_SENSORS_K10TEMP=m
CONFIG_SENSORS_FAM15H_POWER=m
CONFIG_SENSORS_APPLESMC=m
CONFIG_SENSORS_ASB100=m
CONFIG_SENSORS_ATXP1=m
CONFIG_SENSORS_DS620=m
CONFIG_SENSORS_DS1621=m
CONFIG_SENSORS_DELL_SMM=m
CONFIG_SENSORS_I5K_AMB=m
CONFIG_SENSORS_F71805F=m
CONFIG_SENSORS_F71882FG=m
CONFIG_SENSORS_F75375S=m
CONFIG_SENSORS_FSCHMD=m
# CONFIG_SENSORS_FTSTEUTATES is not set
CONFIG_SENSORS_GL518SM=m
CONFIG_SENSORS_GL520SM=m
CONFIG_SENSORS_G760A=m
# CONFIG_SENSORS_G762 is not set
# CONFIG_SENSORS_GPIO_FAN is not set
# CONFIG_SENSORS_HIH6130 is not set
CONFIG_SENSORS_IBMAEM=m
CONFIG_SENSORS_IBMPEX=m
# CONFIG_SENSORS_I5500 is not set
CONFIG_SENSORS_CORETEMP=m
CONFIG_SENSORS_IT87=m
# CONFIG_SENSORS_JC42 is not set
# CONFIG_SENSORS_POWR1220 is not set
CONFIG_SENSORS_LINEAGE=m
# CONFIG_SENSORS_LTC2945 is not set
# CONFIG_SENSORS_LTC2990 is not set
CONFIG_SENSORS_LTC4151=m
CONFIG_SENSORS_LTC4215=m
# CONFIG_SENSORS_LTC4222 is not set
CONFIG_SENSORS_LTC4245=m
# CONFIG_SENSORS_LTC4260 is not set
CONFIG_SENSORS_LTC4261=m
# CONFIG_SENSORS_MAX1111 is not set
CONFIG_SENSORS_MAX16065=m
CONFIG_SENSORS_MAX1619=m
CONFIG_SENSORS_MAX1668=m
CONFIG_SENSORS_MAX197=m
# CONFIG_SENSORS_MAX31722 is not set
CONFIG_SENSORS_MAX6639=m
CONFIG_SENSORS_MAX6642=m
CONFIG_SENSORS_MAX6650=m
CONFIG_SENSORS_MAX6697=m
# CONFIG_SENSORS_MAX31790 is not set
CONFIG_SENSORS_MCP3021=m
# CONFIG_SENSORS_TC654 is not set
# CONFIG_SENSORS_ADCXX is not set
CONFIG_SENSORS_LM63=m
# CONFIG_SENSORS_LM70 is not set
CONFIG_SENSORS_LM73=m
CONFIG_SENSORS_LM75=m
CONFIG_SENSORS_LM77=m
CONFIG_SENSORS_LM78=m
CONFIG_SENSORS_LM80=m
CONFIG_SENSORS_LM83=m
CONFIG_SENSORS_LM85=m
CONFIG_SENSORS_LM87=m
CONFIG_SENSORS_LM90=m
CONFIG_SENSORS_LM92=m
CONFIG_SENSORS_LM93=m
CONFIG_SENSORS_LM95234=m
CONFIG_SENSORS_LM95241=m
CONFIG_SENSORS_LM95245=m
CONFIG_SENSORS_PC87360=m
CONFIG_SENSORS_PC87427=m
CONFIG_SENSORS_NTC_THERMISTOR=m
# CONFIG_SENSORS_NCT6683 is not set
CONFIG_SENSORS_NCT6775=m
# CONFIG_SENSORS_NCT7802 is not set
# CONFIG_SENSORS_NCT7904 is not set
CONFIG_SENSORS_PCF8591=m
CONFIG_PMBUS=m
CONFIG_SENSORS_PMBUS=m
CONFIG_SENSORS_ADM1275=m
CONFIG_SENSORS_LM25066=m
CONFIG_SENSORS_LTC2978=m
# CONFIG_SENSORS_LTC3815 is not set
CONFIG_SENSORS_MAX16064=m
# CONFIG_SENSORS_MAX20751 is not set
CONFIG_SENSORS_MAX34440=m
CONFIG_SENSORS_MAX8688=m
# CONFIG_SENSORS_TPS40422 is not set
CONFIG_SENSORS_UCD9000=m
CONFIG_SENSORS_UCD9200=m
CONFIG_SENSORS_ZL6100=m
# CONFIG_SENSORS_SHT15 is not set
CONFIG_SENSORS_SHT21=m
# CONFIG_SENSORS_SHT3x is not set
# CONFIG_SENSORS_SHTC1 is not set
CONFIG_SENSORS_SIS5595=m
CONFIG_SENSORS_DME1737=m
CONFIG_SENSORS_EMC1403=m
# CONFIG_SENSORS_EMC2103 is not set
CONFIG_SENSORS_EMC6W201=m
CONFIG_SENSORS_SMSC47M1=m
CONFIG_SENSORS_SMSC47M192=m
CONFIG_SENSORS_SMSC47B397=m
CONFIG_SENSORS_SCH56XX_COMMON=m
CONFIG_SENSORS_SCH5627=m
CONFIG_SENSORS_SCH5636=m
# CONFIG_SENSORS_STTS751 is not set
# CONFIG_SENSORS_SMM665 is not set
# CONFIG_SENSORS_ADC128D818 is not set
CONFIG_SENSORS_ADS1015=m
CONFIG_SENSORS_ADS7828=m
# CONFIG_SENSORS_ADS7871 is not set
CONFIG_SENSORS_AMC6821=m
CONFIG_SENSORS_INA209=m
CONFIG_SENSORS_INA2XX=m
# CONFIG_SENSORS_INA3221 is not set
# CONFIG_SENSORS_TC74 is not set
CONFIG_SENSORS_THMC50=m
CONFIG_SENSORS_TMP102=m
# CONFIG_SENSORS_TMP103 is not set
# CONFIG_SENSORS_TMP108 is not set
CONFIG_SENSORS_TMP401=m
CONFIG_SENSORS_TMP421=m
CONFIG_SENSORS_VIA_CPUTEMP=m
CONFIG_SENSORS_VIA686A=m
CONFIG_SENSORS_VT1211=m
CONFIG_SENSORS_VT8231=m
CONFIG_SENSORS_W83781D=m
CONFIG_SENSORS_W83791D=m
CONFIG_SENSORS_W83792D=m
CONFIG_SENSORS_W83793=m
CONFIG_SENSORS_W83795=m
# CONFIG_SENSORS_W83795_FANCTRL is not set
CONFIG_SENSORS_W83L785TS=m
CONFIG_SENSORS_W83L786NG=m
CONFIG_SENSORS_W83627HF=m
CONFIG_SENSORS_W83627EHF=m
# CONFIG_SENSORS_XGENE is not set

#
# ACPI drivers
#
CONFIG_SENSORS_ACPI_POWER=m
CONFIG_SENSORS_ATK0110=m
CONFIG_THERMAL=y
CONFIG_THERMAL_HWMON=y
CONFIG_THERMAL_WRITABLE_TRIPS=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
# CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR is not set
CONFIG_THERMAL_GOV_FAIR_SHARE=y
CONFIG_THERMAL_GOV_STEP_WISE=y
CONFIG_THERMAL_GOV_BANG_BANG=y
CONFIG_THERMAL_GOV_USER_SPACE=y
# CONFIG_THERMAL_GOV_POWER_ALLOCATOR is not set
# CONFIG_THERMAL_EMULATION is not set
CONFIG_INTEL_POWERCLAMP=m
CONFIG_X86_PKG_TEMP_THERMAL=m
# CONFIG_INTEL_SOC_DTS_THERMAL is not set

#
# ACPI INT340X thermal drivers
#
# CONFIG_INT340X_THERMAL is not set
CONFIG_INTEL_PCH_THERMAL=m
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_CORE=y
# CONFIG_WATCHDOG_NOWAYOUT is not set
# CONFIG_WATCHDOG_SYSFS is not set

#
# Watchdog Device Drivers
#
CONFIG_SOFT_WATCHDOG=m
# CONFIG_WDAT_WDT is not set
# CONFIG_XILINX_WATCHDOG is not set
# CONFIG_ZIIRAVE_WATCHDOG is not set
# CONFIG_CADENCE_WATCHDOG is not set
# CONFIG_DW_WATCHDOG is not set
# CONFIG_MAX63XX_WATCHDOG is not set
# CONFIG_ACQUIRE_WDT is not set
# CONFIG_ADVANTECH_WDT is not set
CONFIG_ALIM1535_WDT=m
CONFIG_ALIM7101_WDT=m
CONFIG_F71808E_WDT=m
CONFIG_SP5100_TCO=m
CONFIG_SBC_FITPC2_WATCHDOG=m
# CONFIG_EUROTECH_WDT is not set
CONFIG_IB700_WDT=m
CONFIG_IBMASR=m
# CONFIG_WAFER_WDT is not set
CONFIG_I6300ESB_WDT=y
CONFIG_IE6XX_WDT=m
CONFIG_ITCO_WDT=y
CONFIG_ITCO_VENDOR_SUPPORT=y
CONFIG_IT8712F_WDT=m
CONFIG_IT87_WDT=m
CONFIG_HP_WATCHDOG=m
CONFIG_HPWDT_NMI_DECODING=y
# CONFIG_SC1200_WDT is not set
# CONFIG_PC87413_WDT is not set
CONFIG_NV_TCO=m
# CONFIG_60XX_WDT is not set
# CONFIG_CPU5_WDT is not set
CONFIG_SMSC_SCH311X_WDT=m
# CONFIG_SMSC37B787_WDT is not set
CONFIG_VIA_WDT=m
CONFIG_W83627HF_WDT=m
CONFIG_W83877F_WDT=m
CONFIG_W83977F_WDT=m
CONFIG_MACHZ_WDT=m
# CONFIG_SBC_EPX_C3_WATCHDOG is not set
# CONFIG_INTEL_MEI_WDT is not set
# CONFIG_NI903X_WDT is not set
# CONFIG_NIC7018_WDT is not set
# CONFIG_MEN_A21_WDT is not set
CONFIG_XEN_WDT=m

#
# PCI-based Watchdog Cards
#
CONFIG_PCIPCWATCHDOG=m
CONFIG_WDTPCI=m

#
# USB-based Watchdog Cards
#
CONFIG_USBPCWATCHDOG=m

#
# Watchdog Pretimeout Governors
#
# CONFIG_WATCHDOG_PRETIMEOUT_GOV is not set
CONFIG_SSB_POSSIBLE=y

#
# Sonics Silicon Backplane
#
CONFIG_SSB=m
CONFIG_SSB_SPROM=y
CONFIG_SSB_PCIHOST_POSSIBLE=y
CONFIG_SSB_PCIHOST=y
# CONFIG_SSB_B43_PCI_BRIDGE is not set
CONFIG_SSB_SDIOHOST_POSSIBLE=y
CONFIG_SSB_SDIOHOST=y
# CONFIG_SSB_SILENT is not set
# CONFIG_SSB_DEBUG is not set
CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
CONFIG_SSB_DRIVER_PCICORE=y
# CONFIG_SSB_DRIVER_GPIO is not set
CONFIG_BCMA_POSSIBLE=y

#
# Broadcom specific AMBA
#
CONFIG_BCMA=m
CONFIG_BCMA_HOST_PCI_POSSIBLE=y
CONFIG_BCMA_HOST_PCI=y
# CONFIG_BCMA_HOST_SOC is not set
CONFIG_BCMA_DRIVER_PCI=y
CONFIG_BCMA_DRIVER_GMAC_CMN=y
# CONFIG_BCMA_DRIVER_GPIO is not set
# CONFIG_BCMA_DEBUG is not set

#
# Multifunction device drivers
#
CONFIG_MFD_CORE=y
# CONFIG_MFD_AS3711 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_AAT2870_CORE is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_AXP20X_I2C is not set
# CONFIG_MFD_CROS_EC is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_SPI is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
# CONFIG_MFD_DA9062 is not set
# CONFIG_MFD_DA9063 is not set
# CONFIG_MFD_DA9150 is not set
# CONFIG_MFD_DLN2 is not set
# CONFIG_MFD_MC13XXX_SPI is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_HTC_I2CPLD is not set
# CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not set
CONFIG_LPC_ICH=y
CONFIG_LPC_SCH=m
# CONFIG_INTEL_SOC_PMIC is not set
# CONFIG_MFD_INTEL_LPSS_ACPI is not set
# CONFIG_MFD_INTEL_LPSS_PCI is not set
# CONFIG_MFD_JANZ_CMODIO is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_MAX14577 is not set
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX77843 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
# CONFIG_EZX_PCAP is not set
CONFIG_MFD_VIPERBOARD=m
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_UCB1400_CORE is not set
# CONFIG_MFD_RDC321X is not set
CONFIG_MFD_RTSX_PCI=m
# CONFIG_MFD_RT5033 is not set
# CONFIG_MFD_RTSX_USB is not set
# CONFIG_MFD_RC5T583 is not set
# CONFIG_MFD_SEC_CORE is not set
# CONFIG_MFD_SI476X_CORE is not set
CONFIG_MFD_SM501=m
# CONFIG_MFD_SM501_GPIO is not set
# CONFIG_MFD_SKY81452 is not set
# CONFIG_MFD_SMSC is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_LP3943 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS65010 is not set
# CONFIG_TPS6507X is not set
# CONFIG_MFD_TPS65086 is not set
# CONFIG_MFD_TPS65090 is not set
# CONFIG_MFD_TPS65217 is not set
# CONFIG_MFD_TI_LP873X is not set
# CONFIG_MFD_TPS65218 is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65910 is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_MFD_TPS65912_SPI is not set
# CONFIG_MFD_TPS80031 is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_TMIO is not set
CONFIG_MFD_VX855=m
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_ARIZONA_SPI is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM831X_SPI is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_WM8994 is not set
# CONFIG_REGULATOR is not set
CONFIG_MEDIA_SUPPORT=m

#
# Multimedia core support
#
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
CONFIG_MEDIA_RADIO_SUPPORT=y
# CONFIG_MEDIA_SDR_SUPPORT is not set
CONFIG_MEDIA_RC_SUPPORT=y
# CONFIG_MEDIA_CEC_SUPPORT is not set
# CONFIG_MEDIA_CONTROLLER is not set
CONFIG_VIDEO_DEV=m
CONFIG_VIDEO_V4L2=m
# CONFIG_VIDEO_ADV_DEBUG is not set
# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
CONFIG_VIDEO_TUNER=m
CONFIG_VIDEOBUF_GEN=m
CONFIG_VIDEOBUF_DMA_SG=m
CONFIG_VIDEOBUF_VMALLOC=m
CONFIG_VIDEOBUF_DVB=m
CONFIG_VIDEOBUF2_CORE=m
CONFIG_VIDEOBUF2_MEMOPS=m
CONFIG_VIDEOBUF2_VMALLOC=m
CONFIG_VIDEOBUF2_DMA_SG=m
CONFIG_VIDEOBUF2_DVB=m
CONFIG_DVB_CORE=m
CONFIG_DVB_NET=y
CONFIG_TTPCI_EEPROM=m
CONFIG_DVB_MAX_ADAPTERS=8
CONFIG_DVB_DYNAMIC_MINORS=y
# CONFIG_DVB_DEMUX_SECTION_LOSS_LOG is not set

#
# Media drivers
#
CONFIG_RC_CORE=m
CONFIG_RC_MAP=m
CONFIG_RC_DECODERS=y
CONFIG_LIRC=m
CONFIG_IR_LIRC_CODEC=m
CONFIG_IR_NEC_DECODER=m
CONFIG_IR_RC5_DECODER=m
CONFIG_IR_RC6_DECODER=m
CONFIG_IR_JVC_DECODER=m
CONFIG_IR_SONY_DECODER=m
CONFIG_IR_SANYO_DECODER=m
CONFIG_IR_SHARP_DECODER=m
CONFIG_IR_MCE_KBD_DECODER=m
CONFIG_IR_XMP_DECODER=m
CONFIG_RC_DEVICES=y
CONFIG_RC_ATI_REMOTE=m
CONFIG_IR_ENE=m
# CONFIG_IR_HIX5HD2 is not set
CONFIG_IR_IMON=m
CONFIG_IR_MCEUSB=m
CONFIG_IR_ITE_CIR=m
CONFIG_IR_FINTEK=m
CONFIG_IR_NUVOTON=m
CONFIG_IR_REDRAT3=m
# CONFIG_IR_SPI is not set
CONFIG_IR_STREAMZAP=m
CONFIG_IR_WINBOND_CIR=m
# CONFIG_IR_IGORPLUGUSB is not set
CONFIG_IR_IGUANA=m
CONFIG_IR_TTUSBIR=m
# CONFIG_RC_LOOPBACK is not set
CONFIG_IR_GPIO_CIR=m
# CONFIG_IR_SERIAL is not set
CONFIG_MEDIA_USB_SUPPORT=y

#
# Webcam devices
#
CONFIG_USB_VIDEO_CLASS=m
CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y
CONFIG_USB_GSPCA=m
CONFIG_USB_M5602=m
CONFIG_USB_STV06XX=m
CONFIG_USB_GL860=m
CONFIG_USB_GSPCA_BENQ=m
CONFIG_USB_GSPCA_CONEX=m
CONFIG_USB_GSPCA_CPIA1=m
# CONFIG_USB_GSPCA_DTCS033 is not set
CONFIG_USB_GSPCA_ETOMS=m
CONFIG_USB_GSPCA_FINEPIX=m
CONFIG_USB_GSPCA_JEILINJ=m
CONFIG_USB_GSPCA_JL2005BCD=m
# CONFIG_USB_GSPCA_KINECT is not set
CONFIG_USB_GSPCA_KONICA=m
CONFIG_USB_GSPCA_MARS=m
CONFIG_USB_GSPCA_MR97310A=m
CONFIG_USB_GSPCA_NW80X=m
CONFIG_USB_GSPCA_OV519=m
CONFIG_USB_GSPCA_OV534=m
CONFIG_USB_GSPCA_OV534_9=m
CONFIG_USB_GSPCA_PAC207=m
CONFIG_USB_GSPCA_PAC7302=m
CONFIG_USB_GSPCA_PAC7311=m
CONFIG_USB_GSPCA_SE401=m
CONFIG_USB_GSPCA_SN9C2028=m
CONFIG_USB_GSPCA_SN9C20X=m
CONFIG_USB_GSPCA_SONIXB=m
CONFIG_USB_GSPCA_SONIXJ=m
CONFIG_USB_GSPCA_SPCA500=m
CONFIG_USB_GSPCA_SPCA501=m
CONFIG_USB_GSPCA_SPCA505=m
CONFIG_USB_GSPCA_SPCA506=m
CONFIG_USB_GSPCA_SPCA508=m
CONFIG_USB_GSPCA_SPCA561=m
CONFIG_USB_GSPCA_SPCA1528=m
CONFIG_USB_GSPCA_SQ905=m
CONFIG_USB_GSPCA_SQ905C=m
CONFIG_USB_GSPCA_SQ930X=m
CONFIG_USB_GSPCA_STK014=m
# CONFIG_USB_GSPCA_STK1135 is not set
CONFIG_USB_GSPCA_STV0680=m
CONFIG_USB_GSPCA_SUNPLUS=m
CONFIG_USB_GSPCA_T613=m
CONFIG_USB_GSPCA_TOPRO=m
# CONFIG_USB_GSPCA_TOUPTEK is not set
CONFIG_USB_GSPCA_TV8532=m
CONFIG_USB_GSPCA_VC032X=m
CONFIG_USB_GSPCA_VICAM=m
CONFIG_USB_GSPCA_XIRLINK_CIT=m
CONFIG_USB_GSPCA_ZC3XX=m
CONFIG_USB_PWC=m
# CONFIG_USB_PWC_DEBUG is not set
CONFIG_USB_PWC_INPUT_EVDEV=y
# CONFIG_VIDEO_CPIA2 is not set
CONFIG_USB_ZR364XX=m
CONFIG_USB_STKWEBCAM=m
CONFIG_USB_S2255=m
# CONFIG_VIDEO_USBTV is not set

#
# Analog TV USB devices
#
CONFIG_VIDEO_PVRUSB2=m
CONFIG_VIDEO_PVRUSB2_SYSFS=y
CONFIG_VIDEO_PVRUSB2_DVB=y
# CONFIG_VIDEO_PVRUSB2_DEBUGIFC is not set
CONFIG_VIDEO_HDPVR=m
CONFIG_VIDEO_USBVISION=m
# CONFIG_VIDEO_STK1160_COMMON is not set
# CONFIG_VIDEO_GO7007 is not set

#
# Analog/digital TV USB devices
#
CONFIG_VIDEO_AU0828=m
CONFIG_VIDEO_AU0828_V4L2=y
# CONFIG_VIDEO_AU0828_RC is not set
CONFIG_VIDEO_CX231XX=m
CONFIG_VIDEO_CX231XX_RC=y
CONFIG_VIDEO_CX231XX_ALSA=m
CONFIG_VIDEO_CX231XX_DVB=m
CONFIG_VIDEO_TM6000=m
CONFIG_VIDEO_TM6000_ALSA=m
CONFIG_VIDEO_TM6000_DVB=m

#
# Digital TV USB devices
#
CONFIG_DVB_USB=m
# CONFIG_DVB_USB_DEBUG is not set
CONFIG_DVB_USB_DIB3000MC=m
CONFIG_DVB_USB_A800=m
CONFIG_DVB_USB_DIBUSB_MB=m
# CONFIG_DVB_USB_DIBUSB_MB_FAULTY is not set
CONFIG_DVB_USB_DIBUSB_MC=m
CONFIG_DVB_USB_DIB0700=m
CONFIG_DVB_USB_UMT_010=m
CONFIG_DVB_USB_CXUSB=m
CONFIG_DVB_USB_M920X=m
CONFIG_DVB_USB_DIGITV=m
CONFIG_DVB_USB_VP7045=m
CONFIG_DVB_USB_VP702X=m
CONFIG_DVB_USB_GP8PSK=m
CONFIG_DVB_USB_NOVA_T_USB2=m
CONFIG_DVB_USB_TTUSB2=m
CONFIG_DVB_USB_DTT200U=m
CONFIG_DVB_USB_OPERA1=m
CONFIG_DVB_USB_AF9005=m
CONFIG_DVB_USB_AF9005_REMOTE=m
CONFIG_DVB_USB_PCTV452E=m
CONFIG_DVB_USB_DW2102=m
CONFIG_DVB_USB_CINERGY_T2=m
CONFIG_DVB_USB_DTV5100=m
CONFIG_DVB_USB_FRIIO=m
CONFIG_DVB_USB_AZ6027=m
CONFIG_DVB_USB_TECHNISAT_USB2=m
CONFIG_DVB_USB_V2=m
CONFIG_DVB_USB_AF9015=m
CONFIG_DVB_USB_AF9035=m
CONFIG_DVB_USB_ANYSEE=m
CONFIG_DVB_USB_AU6610=m
CONFIG_DVB_USB_AZ6007=m
CONFIG_DVB_USB_CE6230=m
CONFIG_DVB_USB_EC168=m
CONFIG_DVB_USB_GL861=m
CONFIG_DVB_USB_LME2510=m
CONFIG_DVB_USB_MXL111SF=m
CONFIG_DVB_USB_RTL28XXU=m
# CONFIG_DVB_USB_DVBSKY is not set
# CONFIG_DVB_USB_ZD1301 is not set
CONFIG_DVB_TTUSB_BUDGET=m
CONFIG_DVB_TTUSB_DEC=m
CONFIG_SMS_USB_DRV=m
CONFIG_DVB_B2C2_FLEXCOP_USB=m
# CONFIG_DVB_B2C2_FLEXCOP_USB_DEBUG is not set
# CONFIG_DVB_AS102 is not set

#
# Webcam, TV (analog/digital) USB devices
#
CONFIG_VIDEO_EM28XX=m
# CONFIG_VIDEO_EM28XX_V4L2 is not set
CONFIG_VIDEO_EM28XX_ALSA=m
CONFIG_VIDEO_EM28XX_DVB=m
CONFIG_VIDEO_EM28XX_RC=m
CONFIG_MEDIA_PCI_SUPPORT=y

#
# Media capture support
#
# CONFIG_VIDEO_MEYE is not set
# CONFIG_VIDEO_SOLO6X10 is not set
# CONFIG_VIDEO_TW5864 is not set
# CONFIG_VIDEO_TW68 is not set
# CONFIG_VIDEO_TW686X is not set
# CONFIG_VIDEO_ZORAN is not set

#
# Media capture/analog TV support
#
CONFIG_VIDEO_IVTV=m
# CONFIG_VIDEO_IVTV_DEPRECATED_IOCTLS is not set
# CONFIG_VIDEO_IVTV_ALSA is not set
CONFIG_VIDEO_FB_IVTV=m
# CONFIG_VIDEO_HEXIUM_GEMINI is not set
# CONFIG_VIDEO_HEXIUM_ORION is not set
# CONFIG_VIDEO_MXB is not set
# CONFIG_VIDEO_DT3155 is not set

#
# Media capture/analog/hybrid TV support
#
CONFIG_VIDEO_CX18=m
CONFIG_VIDEO_CX18_ALSA=m
CONFIG_VIDEO_CX23885=m
CONFIG_MEDIA_ALTERA_CI=m
# CONFIG_VIDEO_CX25821 is not set
CONFIG_VIDEO_CX88=m
CONFIG_VIDEO_CX88_ALSA=m
CONFIG_VIDEO_CX88_BLACKBIRD=m
CONFIG_VIDEO_CX88_DVB=m
CONFIG_VIDEO_CX88_ENABLE_VP3054=y
CONFIG_VIDEO_CX88_VP3054=m
CONFIG_VIDEO_CX88_MPEG=m
CONFIG_VIDEO_BT848=m
CONFIG_DVB_BT8XX=m
CONFIG_VIDEO_SAA7134=m
CONFIG_VIDEO_SAA7134_ALSA=m
CONFIG_VIDEO_SAA7134_RC=y
CONFIG_VIDEO_SAA7134_DVB=m
CONFIG_VIDEO_SAA7164=m

#
# Media digital TV PCI Adapters
#
CONFIG_DVB_AV7110_IR=y
CONFIG_DVB_AV7110=m
CONFIG_DVB_AV7110_OSD=y
CONFIG_DVB_BUDGET_CORE=m
CONFIG_DVB_BUDGET=m
CONFIG_DVB_BUDGET_CI=m
CONFIG_DVB_BUDGET_AV=m
CONFIG_DVB_BUDGET_PATCH=m
CONFIG_DVB_B2C2_FLEXCOP_PCI=m
# CONFIG_DVB_B2C2_FLEXCOP_PCI_DEBUG is not set
CONFIG_DVB_PLUTO2=m
CONFIG_DVB_DM1105=m
CONFIG_DVB_PT1=m
# CONFIG_DVB_PT3 is not set
CONFIG_MANTIS_CORE=m
CONFIG_DVB_MANTIS=m
CONFIG_DVB_HOPPER=m
CONFIG_DVB_NGENE=m
CONFIG_DVB_DDBRIDGE=m
# CONFIG_DVB_SMIPCIE is not set
# CONFIG_DVB_NETUP_UNIDVB is not set
# CONFIG_V4L_PLATFORM_DRIVERS is not set
# CONFIG_V4L_MEM2MEM_DRIVERS is not set
# CONFIG_V4L_TEST_DRIVERS is not set
# CONFIG_DVB_PLATFORM_DRIVERS is not set

#
# Supported MMC/SDIO adapters
#
CONFIG_SMS_SDIO_DRV=m
CONFIG_RADIO_ADAPTERS=y
CONFIG_RADIO_TEA575X=m
# CONFIG_RADIO_SI470X is not set
# CONFIG_RADIO_SI4713 is not set
# CONFIG_USB_MR800 is not set
# CONFIG_USB_DSBR is not set
# CONFIG_RADIO_MAXIRADIO is not set
# CONFIG_RADIO_SHARK is not set
# CONFIG_RADIO_SHARK2 is not set
# CONFIG_USB_KEENE is not set
# CONFIG_USB_RAREMONO is not set
# CONFIG_USB_MA901 is not set
# CONFIG_RADIO_TEA5764 is not set
# CONFIG_RADIO_SAA7706H is not set
# CONFIG_RADIO_TEF6862 is not set
# CONFIG_RADIO_WL1273 is not set

#
# Texas Instruments WL128x FM driver (ST based)
#

#
# Supported FireWire (IEEE 1394) Adapters
#
CONFIG_DVB_FIREDTV=m
CONFIG_DVB_FIREDTV_INPUT=y
CONFIG_MEDIA_COMMON_OPTIONS=y

#
# common driver options
#
CONFIG_VIDEO_CX2341X=m
CONFIG_VIDEO_TVEEPROM=m
CONFIG_CYPRESS_FIRMWARE=m
CONFIG_DVB_B2C2_FLEXCOP=m
CONFIG_VIDEO_SAA7146=m
CONFIG_VIDEO_SAA7146_VV=m
CONFIG_SMS_SIANO_MDTV=m
CONFIG_SMS_SIANO_RC=y
# CONFIG_SMS_SIANO_DEBUGFS is not set

#
# Media ancillary drivers (tuners, sensors, i2c, spi, frontends)
#
CONFIG_MEDIA_SUBDRV_AUTOSELECT=y
CONFIG_MEDIA_ATTACH=y
CONFIG_VIDEO_IR_I2C=m

#
# Audio decoders, processors and mixers
#
CONFIG_VIDEO_TVAUDIO=m
CONFIG_VIDEO_TDA7432=m
CONFIG_VIDEO_MSP3400=m
CONFIG_VIDEO_CS3308=m
CONFIG_VIDEO_CS5345=m
CONFIG_VIDEO_CS53L32A=m
CONFIG_VIDEO_WM8775=m
CONFIG_VIDEO_WM8739=m
CONFIG_VIDEO_VP27SMPX=m

#
# RDS decoders
#
CONFIG_VIDEO_SAA6588=m

#
# Video decoders
#
CONFIG_VIDEO_SAA711X=m

#
# Video and audio decoders
#
CONFIG_VIDEO_SAA717X=m
CONFIG_VIDEO_CX25840=m

#
# Video encoders
#
CONFIG_VIDEO_SAA7127=m

#
# Camera sensor devices
#

#
# Flash devices
#

#
# Video improvement chips
#
CONFIG_VIDEO_UPD64031A=m
CONFIG_VIDEO_UPD64083=m

#
# Audio/Video compression chips
#
CONFIG_VIDEO_SAA6752HS=m

#
# Miscellaneous helper chips
#
CONFIG_VIDEO_M52790=m

#
# Sensors used on soc_camera driver
#
CONFIG_MEDIA_TUNER=m
CONFIG_MEDIA_TUNER_SIMPLE=m
CONFIG_MEDIA_TUNER_TDA8290=m
CONFIG_MEDIA_TUNER_TDA827X=m
CONFIG_MEDIA_TUNER_TDA18271=m
CONFIG_MEDIA_TUNER_TDA9887=m
CONFIG_MEDIA_TUNER_TEA5761=m
CONFIG_MEDIA_TUNER_TEA5767=m
CONFIG_MEDIA_TUNER_MT20XX=m
CONFIG_MEDIA_TUNER_MT2060=m
CONFIG_MEDIA_TUNER_MT2063=m
CONFIG_MEDIA_TUNER_MT2266=m
CONFIG_MEDIA_TUNER_MT2131=m
CONFIG_MEDIA_TUNER_QT1010=m
CONFIG_MEDIA_TUNER_XC2028=m
CONFIG_MEDIA_TUNER_XC5000=m
CONFIG_MEDIA_TUNER_XC4000=m
CONFIG_MEDIA_TUNER_MXL5005S=m
CONFIG_MEDIA_TUNER_MXL5007T=m
CONFIG_MEDIA_TUNER_MC44S803=m
CONFIG_MEDIA_TUNER_MAX2165=m
CONFIG_MEDIA_TUNER_TDA18218=m
CONFIG_MEDIA_TUNER_FC0011=m
CONFIG_MEDIA_TUNER_FC0012=m
CONFIG_MEDIA_TUNER_FC0013=m
CONFIG_MEDIA_TUNER_TDA18212=m
CONFIG_MEDIA_TUNER_E4000=m
CONFIG_MEDIA_TUNER_FC2580=m
CONFIG_MEDIA_TUNER_M88RS6000T=m
CONFIG_MEDIA_TUNER_TUA9001=m
CONFIG_MEDIA_TUNER_SI2157=m
CONFIG_MEDIA_TUNER_IT913X=m
CONFIG_MEDIA_TUNER_R820T=m
CONFIG_MEDIA_TUNER_QM1D1C0042=m

#
# Multistandard (satellite) frontends
#
CONFIG_DVB_STB0899=m
CONFIG_DVB_STB6100=m
CONFIG_DVB_STV090x=m
CONFIG_DVB_STV6110x=m
CONFIG_DVB_M88DS3103=m

#
# Multistandard (cable + terrestrial) frontends
#
CONFIG_DVB_DRXK=m
CONFIG_DVB_TDA18271C2DD=m
CONFIG_DVB_SI2165=m
CONFIG_DVB_MN88472=m
CONFIG_DVB_MN88473=m

#
# DVB-S (satellite) frontends
#
CONFIG_DVB_CX24110=m
CONFIG_DVB_CX24123=m
CONFIG_DVB_MT312=m
CONFIG_DVB_ZL10036=m
CONFIG_DVB_ZL10039=m
CONFIG_DVB_S5H1420=m
CONFIG_DVB_STV0288=m
CONFIG_DVB_STB6000=m
CONFIG_DVB_STV0299=m
CONFIG_DVB_STV6110=m
CONFIG_DVB_STV0900=m
CONFIG_DVB_TDA8083=m
CONFIG_DVB_TDA10086=m
CONFIG_DVB_TDA8261=m
CONFIG_DVB_VES1X93=m
CONFIG_DVB_TUNER_ITD1000=m
CONFIG_DVB_TUNER_CX24113=m
CONFIG_DVB_TDA826X=m
CONFIG_DVB_TUA6100=m
CONFIG_DVB_CX24116=m
CONFIG_DVB_CX24117=m
CONFIG_DVB_CX24120=m
CONFIG_DVB_SI21XX=m
CONFIG_DVB_TS2020=m
CONFIG_DVB_DS3000=m
CONFIG_DVB_MB86A16=m
CONFIG_DVB_TDA10071=m

#
# DVB-T (terrestrial) frontends
#
CONFIG_DVB_SP8870=m
CONFIG_DVB_SP887X=m
CONFIG_DVB_CX22700=m
CONFIG_DVB_CX22702=m
CONFIG_DVB_DRXD=m
CONFIG_DVB_L64781=m
CONFIG_DVB_TDA1004X=m
CONFIG_DVB_NXT6000=m
CONFIG_DVB_MT352=m
CONFIG_DVB_ZL10353=m
CONFIG_DVB_DIB3000MB=m
CONFIG_DVB_DIB3000MC=m
CONFIG_DVB_DIB7000M=m
CONFIG_DVB_DIB7000P=m
CONFIG_DVB_TDA10048=m
CONFIG_DVB_AF9013=m
CONFIG_DVB_EC100=m
CONFIG_DVB_STV0367=m
CONFIG_DVB_CXD2820R=m
CONFIG_DVB_RTL2830=m
CONFIG_DVB_RTL2832=m
CONFIG_DVB_SI2168=m
# CONFIG_DVB_AS102_FE is not set
CONFIG_DVB_GP8PSK_FE=m

#
# DVB-C (cable) frontends
#
CONFIG_DVB_VES1820=m
CONFIG_DVB_TDA10021=m
CONFIG_DVB_TDA10023=m
CONFIG_DVB_STV0297=m

#
# ATSC (North American/Korean Terrestrial/Cable DTV) frontends
#
CONFIG_DVB_NXT200X=m
CONFIG_DVB_OR51211=m
CONFIG_DVB_OR51132=m
CONFIG_DVB_BCM3510=m
CONFIG_DVB_LGDT330X=m
CONFIG_DVB_LGDT3305=m
CONFIG_DVB_LGDT3306A=m
CONFIG_DVB_LG2160=m
CONFIG_DVB_S5H1409=m
CONFIG_DVB_AU8522=m
CONFIG_DVB_AU8522_DTV=m
CONFIG_DVB_AU8522_V4L=m
CONFIG_DVB_S5H1411=m

#
# ISDB-T (terrestrial) frontends
#
CONFIG_DVB_S921=m
CONFIG_DVB_DIB8000=m
CONFIG_DVB_MB86A20S=m

#
# ISDB-S (satellite) & ISDB-T (terrestrial) frontends
#
CONFIG_DVB_TC90522=m

#
# Digital terrestrial only tuners/PLL
#
CONFIG_DVB_PLL=m
CONFIG_DVB_TUNER_DIB0070=m
CONFIG_DVB_TUNER_DIB0090=m

#
# SEC control devices for DVB-S
#
CONFIG_DVB_DRX39XYJ=m
CONFIG_DVB_LNBP21=m
CONFIG_DVB_LNBP22=m
CONFIG_DVB_ISL6405=m
CONFIG_DVB_ISL6421=m
CONFIG_DVB_ISL6423=m
CONFIG_DVB_A8293=m
CONFIG_DVB_LGS8GXX=m
CONFIG_DVB_ATBM8830=m
CONFIG_DVB_TDA665x=m
CONFIG_DVB_IX2505V=m
CONFIG_DVB_M88RS2000=m
CONFIG_DVB_AF9033=m

#
# Tools to develop new frontends
#
# CONFIG_DVB_DUMMY_FE is not set

#
# Graphics support
#
CONFIG_AGP=y
CONFIG_AGP_AMD64=y
CONFIG_AGP_INTEL=y
CONFIG_AGP_SIS=y
CONFIG_AGP_VIA=y
CONFIG_INTEL_GTT=y
CONFIG_VGA_ARB=y
CONFIG_VGA_ARB_MAX_GPUS=64
CONFIG_VGA_SWITCHEROO=y
CONFIG_DRM=m
CONFIG_DRM_MIPI_DSI=y
# CONFIG_DRM_DP_AUX_CHARDEV is not set
# CONFIG_DRM_DEBUG_MM_SELFTEST is not set
CONFIG_DRM_KMS_HELPER=m
CONFIG_DRM_KMS_FB_HELPER=y
CONFIG_DRM_FBDEV_EMULATION=y
CONFIG_DRM_LOAD_EDID_FIRMWARE=y
CONFIG_DRM_TTM=m

#
# I2C encoder or helper chips
#
CONFIG_DRM_I2C_CH7006=m
CONFIG_DRM_I2C_SIL164=m
CONFIG_DRM_I2C_NXP_TDA998X=m
# CONFIG_DRM_RADEON is not set
# CONFIG_DRM_AMDGPU is not set

#
# ACP (Audio CoProcessor) Configuration
#
# CONFIG_DRM_NOUVEAU is not set
CONFIG_DRM_I915=m
# CONFIG_DRM_I915_ALPHA_SUPPORT is not set
CONFIG_DRM_I915_CAPTURE_ERROR=y
CONFIG_DRM_I915_COMPRESS_ERROR=y
CONFIG_DRM_I915_USERPTR=y
# CONFIG_DRM_I915_GVT is not set

#
# drm/i915 Debugging
#
# CONFIG_DRM_I915_WERROR is not set
# CONFIG_DRM_I915_DEBUG is not set
# CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS is not set
# CONFIG_DRM_VGEM is not set
CONFIG_DRM_VMWGFX=m
CONFIG_DRM_VMWGFX_FBCON=y
CONFIG_DRM_GMA500=m
CONFIG_DRM_GMA600=y
CONFIG_DRM_GMA3600=y
CONFIG_DRM_UDL=m
CONFIG_DRM_AST=m
CONFIG_DRM_MGAG200=m
CONFIG_DRM_CIRRUS_QEMU=m
CONFIG_DRM_QXL=m
# CONFIG_DRM_BOCHS is not set
# CONFIG_DRM_VIRTIO_GPU is not set
CONFIG_DRM_PANEL=y

#
# Display Panels
#
CONFIG_DRM_BRIDGE=y

#
# Display Interface Bridges
#
# CONFIG_DRM_ANALOGIX_ANX78XX is not set
# CONFIG_DRM_HISI_HIBMC is not set
# CONFIG_DRM_TINYDRM is not set
# CONFIG_DRM_LEGACY is not set
# CONFIG_DRM_LIB_RANDOM is not set

#
# Frame buffer Devices
#
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
CONFIG_FB_CMDLINE=y
CONFIG_FB_NOTIFY=y
# CONFIG_FB_DDC is not set
CONFIG_FB_BOOT_VESA_SUPPORT=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
CONFIG_FB_SYS_FILLRECT=m
CONFIG_FB_SYS_COPYAREA=m
CONFIG_FB_SYS_IMAGEBLIT=m
# CONFIG_FB_PROVIDE_GET_FB_UNMAPPED_AREA is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
CONFIG_FB_SYS_FOPS=m
CONFIG_FB_DEFERRED_IO=y
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
# CONFIG_FB_MODE_HELPERS is not set
CONFIG_FB_TILEBLITTING=y

#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_UVESA is not set
CONFIG_FB_VESA=y
CONFIG_FB_EFI=y
# CONFIG_FB_N411 is not set
# CONFIG_FB_HGA is not set
# CONFIG_FB_OPENCORES is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I740 is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_INTEL is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_VIA is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CARMINE is not set
# CONFIG_FB_SM501 is not set
# CONFIG_FB_SMSCUFX is not set
# CONFIG_FB_UDL is not set
# CONFIG_FB_IBM_GXT4500 is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_XEN_FBDEV_FRONTEND is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_MB862XX is not set
# CONFIG_FB_BROADSHEET is not set
# CONFIG_FB_AUO_K190X is not set
CONFIG_FB_HYPERV=m
# CONFIG_FB_SIMPLE is not set
# CONFIG_FB_SM712 is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=m
# CONFIG_LCD_L4F00242T03 is not set
# CONFIG_LCD_LMS283GF05 is not set
# CONFIG_LCD_LTV350QV is not set
# CONFIG_LCD_ILI922X is not set
# CONFIG_LCD_ILI9320 is not set
# CONFIG_LCD_TDO24M is not set
# CONFIG_LCD_VGG2432A4 is not set
CONFIG_LCD_PLATFORM=m
# CONFIG_LCD_S6E63M0 is not set
# CONFIG_LCD_LD9040 is not set
# CONFIG_LCD_AMS369FG06 is not set
# CONFIG_LCD_LMS501KF03 is not set
# CONFIG_LCD_HX8357 is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_GENERIC is not set
# CONFIG_BACKLIGHT_PWM is not set
CONFIG_BACKLIGHT_APPLE=m
# CONFIG_BACKLIGHT_PM8941_WLED is not set
# CONFIG_BACKLIGHT_SAHARA is not set
# CONFIG_BACKLIGHT_ADP8860 is not set
# CONFIG_BACKLIGHT_ADP8870 is not set
# CONFIG_BACKLIGHT_LM3630A is not set
# CONFIG_BACKLIGHT_LM3639 is not set
# CONFIG_BACKLIGHT_LP855X is not set
# CONFIG_BACKLIGHT_GPIO is not set
# CONFIG_BACKLIGHT_LV5207LP is not set
# CONFIG_BACKLIGHT_BD6107 is not set
# CONFIG_VGASTATE is not set
CONFIG_HDMI=y

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
# CONFIG_VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
CONFIG_LOGO_LINUX_CLUT224=y
CONFIG_SOUND=m
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=m
CONFIG_SND_TIMER=m
CONFIG_SND_PCM=m
CONFIG_SND_HWDEP=m
CONFIG_SND_RAWMIDI=m
CONFIG_SND_JACK=y
CONFIG_SND_JACK_INPUT_DEV=y
CONFIG_SND_SEQUENCER=m
CONFIG_SND_SEQ_DUMMY=m
CONFIG_SND_OSSEMUL=y
# CONFIG_SND_MIXER_OSS is not set
# CONFIG_SND_PCM_OSS is not set
CONFIG_SND_PCM_TIMER=y
CONFIG_SND_SEQUENCER_OSS=y
CONFIG_SND_HRTIMER=m
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
CONFIG_SND_DYNAMIC_MINORS=y
CONFIG_SND_MAX_CARDS=32
# CONFIG_SND_SUPPORT_OLD_API is not set
CONFIG_SND_PROC_FS=y
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
CONFIG_SND_VMASTER=y
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_RAWMIDI_SEQ=m
CONFIG_SND_OPL3_LIB_SEQ=m
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
CONFIG_SND_EMU10K1_SEQ=m
CONFIG_SND_MPU401_UART=m
CONFIG_SND_OPL3_LIB=m
CONFIG_SND_VX_LIB=m
CONFIG_SND_AC97_CODEC=m
CONFIG_SND_DRIVERS=y
CONFIG_SND_PCSP=m
CONFIG_SND_DUMMY=m
CONFIG_SND_ALOOP=m
CONFIG_SND_VIRMIDI=m
CONFIG_SND_MTPAV=m
# CONFIG_SND_MTS64 is not set
# CONFIG_SND_SERIAL_U16550 is not set
CONFIG_SND_MPU401=m
# CONFIG_SND_PORTMAN2X4 is not set
CONFIG_SND_AC97_POWER_SAVE=y
CONFIG_SND_AC97_POWER_SAVE_DEFAULT=5
CONFIG_SND_PCI=y
CONFIG_SND_AD1889=m
# CONFIG_SND_ALS300 is not set
# CONFIG_SND_ALS4000 is not set
CONFIG_SND_ALI5451=m
CONFIG_SND_ASIHPI=m
CONFIG_SND_ATIIXP=m
CONFIG_SND_ATIIXP_MODEM=m
CONFIG_SND_AU8810=m
CONFIG_SND_AU8820=m
CONFIG_SND_AU8830=m
# CONFIG_SND_AW2 is not set
# CONFIG_SND_AZT3328 is not set
CONFIG_SND_BT87X=m
# CONFIG_SND_BT87X_OVERCLOCK is not set
CONFIG_SND_CA0106=m
CONFIG_SND_CMIPCI=m
CONFIG_SND_OXYGEN_LIB=m
CONFIG_SND_OXYGEN=m
# CONFIG_SND_CS4281 is not set
CONFIG_SND_CS46XX=m
CONFIG_SND_CS46XX_NEW_DSP=y
CONFIG_SND_CTXFI=m
CONFIG_SND_DARLA20=m
CONFIG_SND_GINA20=m
CONFIG_SND_LAYLA20=m
CONFIG_SND_DARLA24=m
CONFIG_SND_GINA24=m
CONFIG_SND_LAYLA24=m
CONFIG_SND_MONA=m
CONFIG_SND_MIA=m
CONFIG_SND_ECHO3G=m
CONFIG_SND_INDIGO=m
CONFIG_SND_INDIGOIO=m
CONFIG_SND_INDIGODJ=m
CONFIG_SND_INDIGOIOX=m
CONFIG_SND_INDIGODJX=m
CONFIG_SND_EMU10K1=m
CONFIG_SND_EMU10K1X=m
CONFIG_SND_ENS1370=m
CONFIG_SND_ENS1371=m
# CONFIG_SND_ES1938 is not set
CONFIG_SND_ES1968=m
CONFIG_SND_ES1968_INPUT=y
CONFIG_SND_ES1968_RADIO=y
# CONFIG_SND_FM801 is not set
CONFIG_SND_HDSP=m
CONFIG_SND_HDSPM=m
CONFIG_SND_ICE1712=m
CONFIG_SND_ICE1724=m
CONFIG_SND_INTEL8X0=m
CONFIG_SND_INTEL8X0M=m
CONFIG_SND_KORG1212=m
CONFIG_SND_LOLA=m
CONFIG_SND_LX6464ES=m
CONFIG_SND_MAESTRO3=m
CONFIG_SND_MAESTRO3_INPUT=y
CONFIG_SND_MIXART=m
# CONFIG_SND_NM256 is not set
CONFIG_SND_PCXHR=m
# CONFIG_SND_RIPTIDE is not set
CONFIG_SND_RME32=m
CONFIG_SND_RME96=m
CONFIG_SND_RME9652=m
# CONFIG_SND_SONICVIBES is not set
CONFIG_SND_TRIDENT=m
CONFIG_SND_VIA82XX=m
CONFIG_SND_VIA82XX_MODEM=m
CONFIG_SND_VIRTUOSO=m
CONFIG_SND_VX222=m
# CONFIG_SND_YMFPCI is not set

#
# HD-Audio
#
CONFIG_SND_HDA=m
CONFIG_SND_HDA_INTEL=m
CONFIG_SND_HDA_HWDEP=y
# CONFIG_SND_HDA_RECONFIG is not set
CONFIG_SND_HDA_INPUT_BEEP=y
CONFIG_SND_HDA_INPUT_BEEP_MODE=0
# CONFIG_SND_HDA_PATCH_LOADER is not set
CONFIG_SND_HDA_CODEC_REALTEK=m
CONFIG_SND_HDA_CODEC_ANALOG=m
CONFIG_SND_HDA_CODEC_SIGMATEL=m
CONFIG_SND_HDA_CODEC_VIA=m
CONFIG_SND_HDA_CODEC_HDMI=m
CONFIG_SND_HDA_CODEC_CIRRUS=m
CONFIG_SND_HDA_CODEC_CONEXANT=m
CONFIG_SND_HDA_CODEC_CA0110=m
CONFIG_SND_HDA_CODEC_CA0132=m
CONFIG_SND_HDA_CODEC_CA0132_DSP=y
CONFIG_SND_HDA_CODEC_CMEDIA=m
CONFIG_SND_HDA_CODEC_SI3054=m
CONFIG_SND_HDA_GENERIC=m
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
CONFIG_SND_HDA_CORE=m
CONFIG_SND_HDA_DSP_LOADER=y
CONFIG_SND_HDA_I915=y
CONFIG_SND_HDA_PREALLOC_SIZE=512
CONFIG_SND_SPI=y
CONFIG_SND_USB=y
CONFIG_SND_USB_AUDIO=m
CONFIG_SND_USB_UA101=m
CONFIG_SND_USB_USX2Y=m
CONFIG_SND_USB_CAIAQ=m
CONFIG_SND_USB_CAIAQ_INPUT=y
CONFIG_SND_USB_US122L=m
CONFIG_SND_USB_6FIRE=m
# CONFIG_SND_USB_HIFACE is not set
# CONFIG_SND_BCD2000 is not set
# CONFIG_SND_USB_POD is not set
# CONFIG_SND_USB_PODHD is not set
# CONFIG_SND_USB_TONEPORT is not set
# CONFIG_SND_USB_VARIAX is not set
CONFIG_SND_FIREWIRE=y
CONFIG_SND_FIREWIRE_LIB=m
# CONFIG_SND_DICE is not set
# CONFIG_SND_OXFW is not set
CONFIG_SND_ISIGHT=m
# CONFIG_SND_FIREWORKS is not set
# CONFIG_SND_BEBOB is not set
# CONFIG_SND_FIREWIRE_DIGI00X is not set
# CONFIG_SND_FIREWIRE_TASCAM is not set
# CONFIG_SND_SOC is not set
CONFIG_SND_X86=y
# CONFIG_HDMI_LPE_AUDIO is not set
# CONFIG_SOUND_PRIME is not set
CONFIG_AC97_BUS=m

#
# HID support
#
CONFIG_HID=y
CONFIG_HID_BATTERY_STRENGTH=y
CONFIG_HIDRAW=y
CONFIG_UHID=m
CONFIG_HID_GENERIC=y

#
# Special HID drivers
#
CONFIG_HID_A4TECH=y
CONFIG_HID_ACRUX=m
# CONFIG_HID_ACRUX_FF is not set
CONFIG_HID_APPLE=y
CONFIG_HID_APPLEIR=m
# CONFIG_HID_ASUS is not set
CONFIG_HID_AUREAL=m
CONFIG_HID_BELKIN=y
# CONFIG_HID_BETOP_FF is not set
CONFIG_HID_CHERRY=y
CONFIG_HID_CHICONY=y
# CONFIG_HID_CORSAIR is not set
CONFIG_HID_PRODIKEYS=m
# CONFIG_HID_CMEDIA is not set
# CONFIG_HID_CP2112 is not set
CONFIG_HID_CYPRESS=y
CONFIG_HID_DRAGONRISE=m
# CONFIG_DRAGONRISE_FF is not set
# CONFIG_HID_EMS_FF is not set
CONFIG_HID_ELECOM=m
# CONFIG_HID_ELO is not set
CONFIG_HID_EZKEY=y
# CONFIG_HID_GEMBIRD is not set
# CONFIG_HID_GFRM is not set
CONFIG_HID_HOLTEK=m
# CONFIG_HOLTEK_FF is not set
# CONFIG_HID_GT683R is not set
CONFIG_HID_KEYTOUCH=m
CONFIG_HID_KYE=m
CONFIG_HID_UCLOGIC=m
CONFIG_HID_WALTOP=m
CONFIG_HID_GYRATION=m
CONFIG_HID_ICADE=m
CONFIG_HID_TWINHAN=m
CONFIG_HID_KENSINGTON=y
CONFIG_HID_LCPOWER=m
CONFIG_HID_LED=m
# CONFIG_HID_LENOVO is not set
CONFIG_HID_LOGITECH=y
CONFIG_HID_LOGITECH_DJ=m
CONFIG_HID_LOGITECH_HIDPP=m
# CONFIG_LOGITECH_FF is not set
# CONFIG_LOGIRUMBLEPAD2_FF is not set
# CONFIG_LOGIG940_FF is not set
# CONFIG_LOGIWHEELS_FF is not set
CONFIG_HID_MAGICMOUSE=y
# CONFIG_HID_MAYFLASH is not set
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
CONFIG_HID_MULTITOUCH=m
CONFIG_HID_NTRIG=y
CONFIG_HID_ORTEK=m
CONFIG_HID_PANTHERLORD=m
# CONFIG_PANTHERLORD_FF is not set
# CONFIG_HID_PENMOUNT is not set
CONFIG_HID_PETALYNX=m
CONFIG_HID_PICOLCD=m
CONFIG_HID_PICOLCD_FB=y
CONFIG_HID_PICOLCD_BACKLIGHT=y
CONFIG_HID_PICOLCD_LCD=y
CONFIG_HID_PICOLCD_LEDS=y
CONFIG_HID_PICOLCD_CIR=y
CONFIG_HID_PLANTRONICS=y
CONFIG_HID_PRIMAX=m
CONFIG_HID_ROCCAT=m
CONFIG_HID_SAITEK=m
CONFIG_HID_SAMSUNG=m
CONFIG_HID_SONY=m
# CONFIG_SONY_FF is not set
CONFIG_HID_SPEEDLINK=m
CONFIG_HID_STEELSERIES=m
CONFIG_HID_SUNPLUS=m
# CONFIG_HID_RMI is not set
CONFIG_HID_GREENASIA=m
# CONFIG_GREENASIA_FF is not set
CONFIG_HID_HYPERV_MOUSE=m
CONFIG_HID_SMARTJOYPLUS=m
# CONFIG_SMARTJOYPLUS_FF is not set
CONFIG_HID_TIVO=m
CONFIG_HID_TOPSEED=m
CONFIG_HID_THINGM=m
CONFIG_HID_THRUSTMASTER=m
# CONFIG_THRUSTMASTER_FF is not set
# CONFIG_HID_UDRAW_PS3 is not set
CONFIG_HID_WACOM=m
CONFIG_HID_WIIMOTE=m
# CONFIG_HID_XINMO is not set
CONFIG_HID_ZEROPLUS=m
# CONFIG_ZEROPLUS_FF is not set
CONFIG_HID_ZYDACRON=m
# CONFIG_HID_SENSOR_HUB is not set
# CONFIG_HID_ALPS is not set

#
# USB HID support
#
CONFIG_USB_HID=y
CONFIG_HID_PID=y
CONFIG_USB_HIDDEV=y

#
# I2C HID support
#
CONFIG_I2C_HID=m

#
# Intel ISH HID support
#
# CONFIG_INTEL_ISH_HID is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

#
# Miscellaneous USB options
#
CONFIG_USB_DEFAULT_PERSIST=y
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_OTG_WHITELIST is not set
# CONFIG_USB_OTG_BLACKLIST_HUB is not set
# CONFIG_USB_LEDS_TRIGGER_USBPORT is not set
CONFIG_USB_MON=y
CONFIG_USB_WUSB=m
CONFIG_USB_WUSB_CBAF=m
# CONFIG_USB_WUSB_CBAF_DEBUG is not set

#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_XHCI_PCI=y
CONFIG_USB_XHCI_PLATFORM=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_EHCI_TT_NEWSCHED=y
CONFIG_USB_EHCI_PCI=y
# CONFIG_USB_EHCI_HCD_PLATFORM is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_ISP1362_HCD is not set
# CONFIG_USB_FOTG210_HCD is not set
# CONFIG_USB_MAX3421_HCD is not set
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PCI=y
# CONFIG_USB_OHCI_HCD_PLATFORM is not set
CONFIG_USB_UHCI_HCD=y
# CONFIG_USB_U132_HCD is not set
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_WHCI_HCD is not set
CONFIG_USB_HWA_HCD=m
# CONFIG_USB_HCD_BCMA is not set
# CONFIG_USB_HCD_SSB is not set
# CONFIG_USB_HCD_TEST_MODE is not set

#
# USB Device Class drivers
#
CONFIG_USB_ACM=m
CONFIG_USB_PRINTER=m
CONFIG_USB_WDM=m
CONFIG_USB_TMC=m

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#

#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=m
# CONFIG_USB_STORAGE_DEBUG is not set
CONFIG_USB_STORAGE_REALTEK=m
CONFIG_REALTEK_AUTOPM=y
CONFIG_USB_STORAGE_DATAFAB=m
CONFIG_USB_STORAGE_FREECOM=m
CONFIG_USB_STORAGE_ISD200=m
CONFIG_USB_STORAGE_USBAT=m
CONFIG_USB_STORAGE_SDDR09=m
CONFIG_USB_STORAGE_SDDR55=m
CONFIG_USB_STORAGE_JUMPSHOT=m
CONFIG_USB_STORAGE_ALAUDA=m
CONFIG_USB_STORAGE_ONETOUCH=m
CONFIG_USB_STORAGE_KARMA=m
CONFIG_USB_STORAGE_CYPRESS_ATACB=m
CONFIG_USB_STORAGE_ENE_UB6250=m
CONFIG_USB_UAS=m

#
# USB Imaging devices
#
CONFIG_USB_MDC800=m
CONFIG_USB_MICROTEK=m
# CONFIG_USBIP_CORE is not set
# CONFIG_USB_MUSB_HDRC is not set
CONFIG_USB_DWC3=y
# CONFIG_USB_DWC3_HOST is not set
CONFIG_USB_DWC3_GADGET=y
# CONFIG_USB_DWC3_DUAL_ROLE is not set

#
# Platform Glue Driver Support
#
CONFIG_USB_DWC3_PCI=y
# CONFIG_USB_DWC2 is not set
# CONFIG_USB_CHIPIDEA is not set
# CONFIG_USB_ISP1760 is not set

#
# USB port drivers
#
CONFIG_USB_USS720=m
CONFIG_USB_SERIAL=y
CONFIG_USB_SERIAL_CONSOLE=y
CONFIG_USB_SERIAL_GENERIC=y
# CONFIG_USB_SERIAL_SIMPLE is not set
CONFIG_USB_SERIAL_AIRCABLE=m
CONFIG_USB_SERIAL_ARK3116=m
CONFIG_USB_SERIAL_BELKIN=m
CONFIG_USB_SERIAL_CH341=m
CONFIG_USB_SERIAL_WHITEHEAT=m
CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
CONFIG_USB_SERIAL_CP210X=m
CONFIG_USB_SERIAL_CYPRESS_M8=m
CONFIG_USB_SERIAL_EMPEG=m
CONFIG_USB_SERIAL_FTDI_SIO=m
CONFIG_USB_SERIAL_VISOR=m
CONFIG_USB_SERIAL_IPAQ=m
CONFIG_USB_SERIAL_IR=m
CONFIG_USB_SERIAL_EDGEPORT=m
CONFIG_USB_SERIAL_EDGEPORT_TI=m
# CONFIG_USB_SERIAL_F81232 is not set
# CONFIG_USB_SERIAL_F8153X is not set
CONFIG_USB_SERIAL_GARMIN=m
CONFIG_USB_SERIAL_IPW=m
CONFIG_USB_SERIAL_IUU=m
CONFIG_USB_SERIAL_KEYSPAN_PDA=m
CONFIG_USB_SERIAL_KEYSPAN=m
CONFIG_USB_SERIAL_KLSI=m
CONFIG_USB_SERIAL_KOBIL_SCT=m
CONFIG_USB_SERIAL_MCT_U232=m
# CONFIG_USB_SERIAL_METRO is not set
CONFIG_USB_SERIAL_MOS7720=m
CONFIG_USB_SERIAL_MOS7715_PARPORT=y
CONFIG_USB_SERIAL_MOS7840=m
# CONFIG_USB_SERIAL_MXUPORT is not set
CONFIG_USB_SERIAL_NAVMAN=m
CONFIG_USB_SERIAL_PL2303=m
CONFIG_USB_SERIAL_OTI6858=m
CONFIG_USB_SERIAL_QCAUX=m
CONFIG_USB_SERIAL_QUALCOMM=m
CONFIG_USB_SERIAL_SPCP8X5=m
CONFIG_USB_SERIAL_SAFE=m
CONFIG_USB_SERIAL_SAFE_PADDED=y
CONFIG_USB_SERIAL_SIERRAWIRELESS=m
CONFIG_USB_SERIAL_SYMBOL=m
# CONFIG_USB_SERIAL_TI is not set
CONFIG_USB_SERIAL_CYBERJACK=m
CONFIG_USB_SERIAL_XIRCOM=m
CONFIG_USB_SERIAL_WWAN=m
CONFIG_USB_SERIAL_OPTION=m
CONFIG_USB_SERIAL_OMNINET=m
CONFIG_USB_SERIAL_OPTICON=m
CONFIG_USB_SERIAL_XSENS_MT=m
# CONFIG_USB_SERIAL_WISHBONE is not set
CONFIG_USB_SERIAL_SSU100=m
CONFIG_USB_SERIAL_QT2=m
# CONFIG_USB_SERIAL_UPD78F0730 is not set
CONFIG_USB_SERIAL_DEBUG=m

#
# USB Miscellaneous drivers
#
CONFIG_USB_EMI62=m
CONFIG_USB_EMI26=m
CONFIG_USB_ADUTUX=m
CONFIG_USB_SEVSEG=m
# CONFIG_USB_RIO500 is not set
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
CONFIG_USB_IDMOUSE=m
CONFIG_USB_FTDI_ELAN=m
CONFIG_USB_APPLEDISPLAY=m
CONFIG_USB_SISUSBVGA=m
CONFIG_USB_SISUSBVGA_CON=y
CONFIG_USB_LD=m
# CONFIG_USB_TRANCEVIBRATOR is not set
CONFIG_USB_IOWARRIOR=m
# CONFIG_USB_TEST is not set
# CONFIG_USB_EHSET_TEST_FIXTURE is not set
CONFIG_USB_ISIGHTFW=m
# CONFIG_USB_YUREX is not set
CONFIG_USB_EZUSB_FX2=m
# CONFIG_USB_HUB_USB251XB is not set
CONFIG_USB_HSIC_USB3503=m
# CONFIG_USB_HSIC_USB4604 is not set
# CONFIG_USB_LINK_LAYER_TEST is not set
# CONFIG_USB_CHAOSKEY is not set
# CONFIG_UCSI is not set
CONFIG_USB_ATM=m
CONFIG_USB_SPEEDTOUCH=m
CONFIG_USB_CXACRU=m
CONFIG_USB_UEAGLEATM=m
CONFIG_USB_XUSBATM=m

#
# USB Physical Layer drivers
#
CONFIG_USB_PHY=y
CONFIG_NOP_USB_XCEIV=y
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_USB_ISP1301 is not set
CONFIG_USB_GADGET=y
# CONFIG_USB_GADGET_DEBUG is not set
# CONFIG_USB_GADGET_DEBUG_FILES is not set
# CONFIG_USB_GADGET_DEBUG_FS is not set
CONFIG_USB_GADGET_VBUS_DRAW=2
CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2

#
# USB Peripheral Controller
#
# CONFIG_USB_FOTG210_UDC is not set
# CONFIG_USB_GR_UDC is not set
# CONFIG_USB_R8A66597 is not set
# CONFIG_USB_PXA27X is not set
# CONFIG_USB_MV_UDC is not set
# CONFIG_USB_MV_U3D is not set
# CONFIG_USB_M66592 is not set
# CONFIG_USB_BDC_UDC is not set
# CONFIG_USB_AMD5536UDC is not set
# CONFIG_USB_NET2272 is not set
# CONFIG_USB_NET2280 is not set
# CONFIG_USB_GOKU is not set
# CONFIG_USB_EG20T is not set
# CONFIG_USB_DUMMY_HCD is not set
CONFIG_USB_LIBCOMPOSITE=m
CONFIG_USB_F_MASS_STORAGE=m
# CONFIG_USB_CONFIGFS is not set
# CONFIG_USB_ZERO is not set
# CONFIG_USB_AUDIO is not set
# CONFIG_USB_ETH is not set
# CONFIG_USB_G_NCM is not set
# CONFIG_USB_GADGETFS is not set
# CONFIG_USB_FUNCTIONFS is not set
CONFIG_USB_MASS_STORAGE=m
# CONFIG_USB_GADGET_TARGET is not set
# CONFIG_USB_G_SERIAL is not set
# CONFIG_USB_MIDI_GADGET is not set
# CONFIG_USB_G_PRINTER is not set
# CONFIG_USB_CDC_COMPOSITE is not set
# CONFIG_USB_G_ACM_MS is not set
# CONFIG_USB_G_MULTI is not set
# CONFIG_USB_G_HID is not set
# CONFIG_USB_G_DBGP is not set
# CONFIG_USB_G_WEBCAM is not set
# CONFIG_USB_LED_TRIG is not set
# CONFIG_USB_ULPI_BUS is not set
CONFIG_UWB=m
CONFIG_UWB_HWA=m
CONFIG_UWB_WHCI=m
CONFIG_UWB_I1480U=m
CONFIG_MMC=m
# CONFIG_MMC_DEBUG is not set
CONFIG_MMC_BLOCK=m
CONFIG_MMC_BLOCK_MINORS=8
CONFIG_MMC_BLOCK_BOUNCE=y
CONFIG_SDIO_UART=m
# CONFIG_MMC_TEST is not set

#
# MMC/SD/SDIO Host Controller Drivers
#
CONFIG_MMC_SDHCI=m
CONFIG_MMC_SDHCI_PCI=m
CONFIG_MMC_RICOH_MMC=y
CONFIG_MMC_SDHCI_ACPI=m
CONFIG_MMC_SDHCI_PLTFM=m
# CONFIG_MMC_WBSD is not set
CONFIG_MMC_TIFM_SD=m
# CONFIG_MMC_SPI is not set
CONFIG_MMC_CB710=m
CONFIG_MMC_VIA_SDMMC=m
CONFIG_MMC_VUB300=m
CONFIG_MMC_USHC=m
# CONFIG_MMC_USDHI6ROL0 is not set
CONFIG_MMC_REALTEK_PCI=m
# CONFIG_MMC_TOSHIBA_PCI is not set
# CONFIG_MMC_MTK is not set
CONFIG_MEMSTICK=m
# CONFIG_MEMSTICK_DEBUG is not set

#
# MemoryStick drivers
#
# CONFIG_MEMSTICK_UNSAFE_RESUME is not set
CONFIG_MSPRO_BLOCK=m
# CONFIG_MS_BLOCK is not set

#
# MemoryStick Host Controller Drivers
#
CONFIG_MEMSTICK_TIFM_MS=m
CONFIG_MEMSTICK_JMICRON_38X=m
CONFIG_MEMSTICK_R592=m
CONFIG_MEMSTICK_REALTEK_PCI=m
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
# CONFIG_LEDS_CLASS_FLASH is not set
# CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set

#
# LED drivers
#
CONFIG_LEDS_LM3530=m
# CONFIG_LEDS_LM3642 is not set
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_GPIO is not set
CONFIG_LEDS_LP3944=m
# CONFIG_LEDS_LP3952 is not set
CONFIG_LEDS_LP55XX_COMMON=m
CONFIG_LEDS_LP5521=m
CONFIG_LEDS_LP5523=m
CONFIG_LEDS_LP5562=m
# CONFIG_LEDS_LP8501 is not set
# CONFIG_LEDS_LP8860 is not set
CONFIG_LEDS_CLEVO_MAIL=m
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_PCA963X is not set
# CONFIG_LEDS_DAC124S085 is not set
# CONFIG_LEDS_PWM is not set
# CONFIG_LEDS_BD2802 is not set
CONFIG_LEDS_INTEL_SS4200=m
# CONFIG_LEDS_LT3593 is not set
# CONFIG_LEDS_TCA6507 is not set
# CONFIG_LEDS_TLC591XX is not set
# CONFIG_LEDS_LM355x is not set

#
# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
#
CONFIG_LEDS_BLINKM=m
# CONFIG_LEDS_MLXCPLD is not set
# CONFIG_LEDS_USER is not set
# CONFIG_LEDS_NIC78BX is not set

#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=m
CONFIG_LEDS_TRIGGER_ONESHOT=m
# CONFIG_LEDS_TRIGGER_DISK is not set
# CONFIG_LEDS_TRIGGER_MTD is not set
CONFIG_LEDS_TRIGGER_HEARTBEAT=m
CONFIG_LEDS_TRIGGER_BACKLIGHT=m
# CONFIG_LEDS_TRIGGER_CPU is not set
# CONFIG_LEDS_TRIGGER_GPIO is not set
CONFIG_LEDS_TRIGGER_DEFAULT_ON=m

#
# iptables trigger is under Netfilter config (LED target)
#
CONFIG_LEDS_TRIGGER_TRANSIENT=m
CONFIG_LEDS_TRIGGER_CAMERA=m
# CONFIG_LEDS_TRIGGER_PANIC is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_EDAC=y
CONFIG_EDAC_LEGACY_SYSFS=y
# CONFIG_EDAC_DEBUG is not set
CONFIG_EDAC_DECODE_MCE=m
CONFIG_EDAC_MM_EDAC=m
CONFIG_EDAC_AMD64=m
# CONFIG_EDAC_AMD64_ERROR_INJECTION is not set
CONFIG_EDAC_E752X=m
CONFIG_EDAC_I82975X=m
CONFIG_EDAC_I3000=m
CONFIG_EDAC_I3200=m
# CONFIG_EDAC_IE31200 is not set
CONFIG_EDAC_X38=m
CONFIG_EDAC_I5400=m
CONFIG_EDAC_I7CORE=m
CONFIG_EDAC_I5000=m
CONFIG_EDAC_I5100=m
CONFIG_EDAC_I7300=m
CONFIG_EDAC_SBRIDGE=m
# CONFIG_EDAC_SKX is not set
# CONFIG_EDAC_PND2 is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_MC146818_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
# CONFIG_RTC_SYSTOHC is not set
# CONFIG_RTC_DEBUG is not set

#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set

#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_ABB5ZES3 is not set
# CONFIG_RTC_DRV_ABX80X is not set
CONFIG_RTC_DRV_DS1307=m
CONFIG_RTC_DRV_DS1307_HWMON=y
# CONFIG_RTC_DRV_DS1307_CENTURY is not set
CONFIG_RTC_DRV_DS1374=m
# CONFIG_RTC_DRV_DS1374_WDT is not set
CONFIG_RTC_DRV_DS1672=m
CONFIG_RTC_DRV_MAX6900=m
CONFIG_RTC_DRV_RS5C372=m
CONFIG_RTC_DRV_ISL1208=m
CONFIG_RTC_DRV_ISL12022=m
CONFIG_RTC_DRV_X1205=m
CONFIG_RTC_DRV_PCF8523=m
# CONFIG_RTC_DRV_PCF85063 is not set
CONFIG_RTC_DRV_PCF8563=m
CONFIG_RTC_DRV_PCF8583=m
CONFIG_RTC_DRV_M41T80=m
CONFIG_RTC_DRV_M41T80_WDT=y
CONFIG_RTC_DRV_BQ32K=m
# CONFIG_RTC_DRV_S35390A is not set
CONFIG_RTC_DRV_FM3130=m
# CONFIG_RTC_DRV_RX8010 is not set
CONFIG_RTC_DRV_RX8581=m
CONFIG_RTC_DRV_RX8025=m
CONFIG_RTC_DRV_EM3027=m
# CONFIG_RTC_DRV_RV8803 is not set

#
# SPI RTC drivers
#
# CONFIG_RTC_DRV_M41T93 is not set
# CONFIG_RTC_DRV_M41T94 is not set
# CONFIG_RTC_DRV_DS1302 is not set
# CONFIG_RTC_DRV_DS1305 is not set
# CONFIG_RTC_DRV_DS1343 is not set
# CONFIG_RTC_DRV_DS1347 is not set
# CONFIG_RTC_DRV_DS1390 is not set
# CONFIG_RTC_DRV_MAX6916 is not set
# CONFIG_RTC_DRV_R9701 is not set
# CONFIG_RTC_DRV_RX4581 is not set
# CONFIG_RTC_DRV_RX6110 is not set
# CONFIG_RTC_DRV_RS5C348 is not set
# CONFIG_RTC_DRV_MAX6902 is not set
# CONFIG_RTC_DRV_PCF2123 is not set
# CONFIG_RTC_DRV_MCP795 is not set
CONFIG_RTC_I2C_AND_SPI=y

#
# SPI and I2C RTC drivers
#
CONFIG_RTC_DRV_DS3232=m
# CONFIG_RTC_DRV_PCF2127 is not set
CONFIG_RTC_DRV_RV3029C2=m
CONFIG_RTC_DRV_RV3029_HWMON=y

#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
CONFIG_RTC_DRV_DS1286=m
CONFIG_RTC_DRV_DS1511=m
CONFIG_RTC_DRV_DS1553=m
# CONFIG_RTC_DRV_DS1685_FAMILY is not set
CONFIG_RTC_DRV_DS1742=m
CONFIG_RTC_DRV_DS2404=m
CONFIG_RTC_DRV_STK17TA8=m
# CONFIG_RTC_DRV_M48T86 is not set
CONFIG_RTC_DRV_M48T35=m
CONFIG_RTC_DRV_M48T59=m
CONFIG_RTC_DRV_MSM6242=m
CONFIG_RTC_DRV_BQ4802=m
CONFIG_RTC_DRV_RP5C01=m
CONFIG_RTC_DRV_V3020=m

#
# on-CPU RTC drivers
#

#
# HID Sensor RTC drivers
#
# CONFIG_RTC_DRV_HID_SENSOR_TIME is not set
CONFIG_DMADEVICES=y
# CONFIG_DMADEVICES_DEBUG is not set

#
# DMA Devices
#
CONFIG_DMA_ENGINE=y
CONFIG_DMA_VIRTUAL_CHANNELS=y
CONFIG_DMA_ACPI=y
# CONFIG_INTEL_IDMA64 is not set
# CONFIG_INTEL_IOATDMA is not set
# CONFIG_QCOM_HIDMA_MGMT is not set
# CONFIG_QCOM_HIDMA is not set
CONFIG_DW_DMAC_CORE=y
CONFIG_DW_DMAC=m
CONFIG_DW_DMAC_PCI=y
CONFIG_HSU_DMA=y

#
# DMA Clients
#
CONFIG_ASYNC_TX_DMA=y
CONFIG_DMATEST=m

#
# DMABUF options
#
CONFIG_SYNC_FILE=y
CONFIG_SW_SYNC=y
CONFIG_AUXDISPLAY=y
CONFIG_KS0108=m
CONFIG_KS0108_PORT=0x378
CONFIG_KS0108_DELAY=2
CONFIG_CFAG12864B=m
CONFIG_CFAG12864B_RATE=20
# CONFIG_IMG_ASCII_LCD is not set
CONFIG_UIO=m
CONFIG_UIO_CIF=m
CONFIG_UIO_PDRV_GENIRQ=m
# CONFIG_UIO_DMEM_GENIRQ is not set
CONFIG_UIO_AEC=m
CONFIG_UIO_SERCOS3=m
CONFIG_UIO_PCI_GENERIC=m
# CONFIG_UIO_NETX is not set
# CONFIG_UIO_PRUSS is not set
# CONFIG_UIO_MF624 is not set
# CONFIG_UIO_HV_GENERIC is not set
CONFIG_VFIO_IOMMU_TYPE1=m
CONFIG_VFIO_VIRQFD=m
CONFIG_VFIO=m
# CONFIG_VFIO_NOIOMMU is not set
CONFIG_VFIO_PCI=m
# CONFIG_VFIO_PCI_VGA is not set
CONFIG_VFIO_PCI_MMAP=y
CONFIG_VFIO_PCI_INTX=y
CONFIG_VFIO_PCI_IGD=y
# CONFIG_VFIO_MDEV is not set
CONFIG_IRQ_BYPASS_MANAGER=m
# CONFIG_VIRT_DRIVERS is not set
CONFIG_VIRTIO=y

#
# Virtio drivers
#
CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_PCI_LEGACY=y
CONFIG_VIRTIO_BALLOON=y
# CONFIG_VIRTIO_INPUT is not set
# CONFIG_VIRTIO_MMIO is not set

#
# Microsoft Hyper-V guest support
#
CONFIG_HYPERV=m
CONFIG_HYPERV_UTILS=m
CONFIG_HYPERV_BALLOON=m

#
# Xen driver support
#
CONFIG_XEN_BALLOON=y
# CONFIG_XEN_SELFBALLOONING is not set
# CONFIG_XEN_BALLOON_MEMORY_HOTPLUG is not set
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_DEV_EVTCHN=m
CONFIG_XEN_BACKEND=y
CONFIG_XENFS=m
CONFIG_XEN_COMPAT_XENFS=y
CONFIG_XEN_SYS_HYPERVISOR=y
CONFIG_XEN_XENBUS_FRONTEND=y
# CONFIG_XEN_GNTDEV is not set
# CONFIG_XEN_GRANT_DEV_ALLOC is not set
CONFIG_SWIOTLB_XEN=y
CONFIG_XEN_TMEM=m
CONFIG_XEN_PCIDEV_BACKEND=m
# CONFIG_XEN_SCSI_BACKEND is not set
CONFIG_XEN_PRIVCMD=m
CONFIG_XEN_ACPI_PROCESSOR=m
# CONFIG_XEN_MCE_LOG is not set
CONFIG_XEN_HAVE_PVMMU=y
CONFIG_XEN_EFI=y
CONFIG_XEN_AUTO_XLATE=y
CONFIG_XEN_ACPI=y
CONFIG_XEN_SYMS=y
CONFIG_XEN_HAVE_VPMU=y
CONFIG_STAGING=y
# CONFIG_PRISM2_USB is not set
# CONFIG_COMEDI is not set
# CONFIG_RTL8192U is not set
CONFIG_RTLLIB=m
CONFIG_RTLLIB_CRYPTO_CCMP=m
CONFIG_RTLLIB_CRYPTO_TKIP=m
CONFIG_RTLLIB_CRYPTO_WEP=m
CONFIG_RTL8192E=m
CONFIG_R8712U=m
# CONFIG_R8188EU is not set
# CONFIG_RTS5208 is not set
# CONFIG_VT6655 is not set
# CONFIG_VT6656 is not set
# CONFIG_FB_SM750 is not set
# CONFIG_FB_XGI is not set

#
# Speakup console speech
#
# CONFIG_SPEAKUP is not set
# CONFIG_STAGING_MEDIA is not set

#
# Android
#
# CONFIG_LTE_GDM724X is not set
CONFIG_FIREWIRE_SERIAL=m
CONFIG_FWTTY_MAX_TOTAL_PORTS=64
CONFIG_FWTTY_MAX_CARD_PORTS=32
# CONFIG_LNET is not set
# CONFIG_DGNC is not set
# CONFIG_GS_FPGABOOT is not set
# CONFIG_CRYPTO_SKEIN is not set
# CONFIG_UNISYSSPAR is not set
# CONFIG_FB_TFT is not set
# CONFIG_WILC1000_SDIO is not set
# CONFIG_WILC1000_SPI is not set
# CONFIG_MOST is not set
# CONFIG_KS7010 is not set
# CONFIG_GREYBUS is not set
CONFIG_X86_PLATFORM_DEVICES=y
CONFIG_ACER_WMI=m
CONFIG_ACERHDF=m
# CONFIG_ALIENWARE_WMI is not set
CONFIG_ASUS_LAPTOP=m
# CONFIG_DELL_LAPTOP is not set
# CONFIG_DELL_WMI is not set
CONFIG_DELL_WMI_AIO=m
# CONFIG_DELL_SMO8800 is not set
# CONFIG_DELL_RBTN is not set
CONFIG_FUJITSU_LAPTOP=m
# CONFIG_FUJITSU_LAPTOP_DEBUG is not set
CONFIG_FUJITSU_TABLET=m
CONFIG_AMILO_RFKILL=m
CONFIG_HP_ACCEL=m
# CONFIG_HP_WIRELESS is not set
CONFIG_HP_WMI=m
CONFIG_MSI_LAPTOP=m
CONFIG_PANASONIC_LAPTOP=m
CONFIG_COMPAL_LAPTOP=m
CONFIG_SONY_LAPTOP=m
CONFIG_SONYPI_COMPAT=y
CONFIG_IDEAPAD_LAPTOP=m
# CONFIG_SURFACE3_WMI is not set
CONFIG_THINKPAD_ACPI=m
CONFIG_THINKPAD_ACPI_ALSA_SUPPORT=y
# CONFIG_THINKPAD_ACPI_DEBUGFACILITIES is not set
# CONFIG_THINKPAD_ACPI_DEBUG is not set
# CONFIG_THINKPAD_ACPI_UNSAFE_LEDS is not set
CONFIG_THINKPAD_ACPI_VIDEO=y
CONFIG_THINKPAD_ACPI_HOTKEY_POLL=y
CONFIG_SENSORS_HDAPS=m
# CONFIG_INTEL_MENLOW is not set
CONFIG_EEEPC_LAPTOP=m
CONFIG_ASUS_WMI=m
CONFIG_ASUS_NB_WMI=m
CONFIG_EEEPC_WMI=m
# CONFIG_ASUS_WIRELESS is not set
CONFIG_ACPI_WMI=m
CONFIG_MSI_WMI=m
CONFIG_TOPSTAR_LAPTOP=m
CONFIG_TOSHIBA_BT_RFKILL=m
# CONFIG_TOSHIBA_HAPS is not set
# CONFIG_TOSHIBA_WMI is not set
CONFIG_ACPI_CMPC=m
# CONFIG_INTEL_HID_EVENT is not set
# CONFIG_INTEL_VBTN is not set
CONFIG_INTEL_IPS=m
# CONFIG_INTEL_PMC_CORE is not set
# CONFIG_IBM_RTL is not set
CONFIG_SAMSUNG_LAPTOP=m
CONFIG_MXM_WMI=m
CONFIG_INTEL_OAKTRAIL=m
CONFIG_SAMSUNG_Q10=m
CONFIG_APPLE_GMUX=m
# CONFIG_INTEL_RST is not set
# CONFIG_INTEL_SMARTCONNECT is not set
CONFIG_PVPANIC=y
# CONFIG_INTEL_PMC_IPC is not set
# CONFIG_SURFACE_PRO3_BUTTON is not set
# CONFIG_INTEL_PUNIT_IPC is not set
# CONFIG_MLX_PLATFORM is not set
# CONFIG_MLX_CPLD_PLATFORM is not set
# CONFIG_INTEL_TURBO_MAX_3 is not set
# CONFIG_SILEAD_DMI is not set
CONFIG_PMC_ATOM=y
# CONFIG_CHROME_PLATFORMS is not set
CONFIG_CLKDEV_LOOKUP=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y

#
# Common Clock Framework
#
# CONFIG_COMMON_CLK_SI5351 is not set
# CONFIG_COMMON_CLK_CDCE706 is not set
# CONFIG_COMMON_CLK_CS2000_CP is not set
# CONFIG_COMMON_CLK_NXP is not set
# CONFIG_COMMON_CLK_PWM is not set
# CONFIG_COMMON_CLK_PXA is not set
# CONFIG_COMMON_CLK_PIC32 is not set

#
# Hardware Spinlock drivers
#

#
# Clock Source drivers
#
CONFIG_CLKEVT_I8253=y
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
# CONFIG_ATMEL_PIT is not set
# CONFIG_SH_TIMER_CMT is not set
# CONFIG_SH_TIMER_MTU2 is not set
# CONFIG_SH_TIMER_TMU is not set
# CONFIG_EM_TIMER_STI is not set
CONFIG_MAILBOX=y
CONFIG_PCC=y
# CONFIG_ALTERA_MBOX is not set
CONFIG_IOMMU_API=y
CONFIG_IOMMU_SUPPORT=y

#
# Generic IOMMU Pagetable Support
#
CONFIG_IOMMU_IOVA=y
CONFIG_AMD_IOMMU=y
CONFIG_AMD_IOMMU_V2=m
CONFIG_DMAR_TABLE=y
CONFIG_INTEL_IOMMU=y
# CONFIG_INTEL_IOMMU_SVM is not set
# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
CONFIG_INTEL_IOMMU_FLOPPY_WA=y
CONFIG_IRQ_REMAP=y

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set

#
# Rpmsg drivers
#

#
# SOC (System On Chip) specific Drivers
#

#
# Broadcom SoC drivers
#
# CONFIG_SUNXI_SRAM is not set
# CONFIG_SOC_TI is not set
# CONFIG_SOC_ZTE is not set
CONFIG_PM_DEVFREQ=y

#
# DEVFREQ Governors
#
CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=m
# CONFIG_DEVFREQ_GOV_PERFORMANCE is not set
# CONFIG_DEVFREQ_GOV_POWERSAVE is not set
# CONFIG_DEVFREQ_GOV_USERSPACE is not set
# CONFIG_DEVFREQ_GOV_PASSIVE is not set

#
# DEVFREQ Drivers
#
# CONFIG_PM_DEVFREQ_EVENT is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
CONFIG_NTB=m
# CONFIG_NTB_AMD is not set
# CONFIG_NTB_INTEL is not set
# CONFIG_NTB_PINGPONG is not set
# CONFIG_NTB_TOOL is not set
# CONFIG_NTB_PERF is not set
# CONFIG_NTB_TRANSPORT is not set
# CONFIG_VME_BUS is not set
CONFIG_PWM=y
CONFIG_PWM_SYSFS=y
# CONFIG_PWM_LPSS_PCI is not set
# CONFIG_PWM_LPSS_PLATFORM is not set
# CONFIG_PWM_PCA9685 is not set
CONFIG_ARM_GIC_MAX_NR=1
# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set
# CONFIG_FMC is not set

#
# PHY Subsystem
#
CONFIG_GENERIC_PHY=y
# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# CONFIG_BCM_KONA_USB2_PHY is not set
CONFIG_POWERCAP=y
CONFIG_INTEL_RAPL=m
# CONFIG_MCB is not set

#
# Performance monitor support
#
CONFIG_RAS=y
# CONFIG_MCE_AMD_INJ is not set
# CONFIG_THUNDERBOLT is not set

#
# Android
#
# CONFIG_ANDROID is not set
CONFIG_LIBNVDIMM=m
CONFIG_BLK_DEV_PMEM=m
CONFIG_ND_BLK=m
CONFIG_ND_CLAIM=y
CONFIG_ND_BTT=m
CONFIG_BTT=y
CONFIG_ND_PFN=m
CONFIG_NVDIMM_PFN=y
CONFIG_NVDIMM_DAX=y
CONFIG_DEV_DAX=m
CONFIG_DEV_DAX_PMEM=m
CONFIG_NR_DEV_DAX=32768
CONFIG_NVMEM=m
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set

#
# FPGA Configuration Support
#
# CONFIG_FPGA is not set

#
# FSI support
#
# CONFIG_FSI is not set

#
# Firmware Drivers
#
CONFIG_EDD=m
# CONFIG_EDD_OFF is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_DELL_RBU=m
CONFIG_DCDBAS=m
CONFIG_DMIID=y
CONFIG_DMI_SYSFS=y
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
CONFIG_ISCSI_IBFT_FIND=y
CONFIG_ISCSI_IBFT=m
# CONFIG_FW_CFG_SYSFS is not set
# CONFIG_GOOGLE_FIRMWARE is not set

#
# EFI (Extensible Firmware Interface) Support
#
CONFIG_EFI_VARS=y
CONFIG_EFI_ESRT=y
CONFIG_EFI_VARS_PSTORE=y
CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE=y
CONFIG_EFI_RUNTIME_MAP=y
# CONFIG_EFI_FAKE_MEMMAP is not set
CONFIG_EFI_RUNTIME_WRAPPERS=y
# CONFIG_EFI_BOOTLOADER_CONTROL is not set
# CONFIG_EFI_CAPSULE_LOADER is not set
# CONFIG_EFI_TEST is not set
# CONFIG_APPLE_PROPERTIES is not set
CONFIG_UEFI_CPER=y
# CONFIG_EFI_DEV_PATH_PARSER is not set

#
# Tegra firmware driver
#

#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_FS_IOMAP=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=y
CONFIG_EXT4_USE_FOR_EXT2=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
# CONFIG_EXT4_ENCRYPTION is not set
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
# CONFIG_XFS_RT is not set
# CONFIG_XFS_WARN is not set
# CONFIG_XFS_DEBUG is not set
CONFIG_GFS2_FS=m
CONFIG_GFS2_FS_LOCKING_DLM=y
CONFIG_OCFS2_FS=m
CONFIG_OCFS2_FS_O2CB=m
CONFIG_OCFS2_FS_USERSPACE_CLUSTER=m
CONFIG_OCFS2_FS_STATS=y
CONFIG_OCFS2_DEBUG_MASKLOG=y
# CONFIG_OCFS2_DEBUG_FS is not set
CONFIG_BTRFS_FS=m
CONFIG_BTRFS_FS_POSIX_ACL=y
# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
# CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set
# CONFIG_BTRFS_DEBUG is not set
# CONFIG_BTRFS_ASSERT is not set
# CONFIG_NILFS2_FS is not set
CONFIG_F2FS_FS=m
CONFIG_F2FS_STAT_FS=y
CONFIG_F2FS_FS_XATTR=y
CONFIG_F2FS_FS_POSIX_ACL=y
# CONFIG_F2FS_FS_SECURITY is not set
# CONFIG_F2FS_CHECK_FS is not set
# CONFIG_F2FS_FS_ENCRYPTION is not set
# CONFIG_F2FS_IO_TRACE is not set
# CONFIG_F2FS_FAULT_INJECTION is not set
CONFIG_FS_DAX=y
CONFIG_FS_DAX_PMD=y
CONFIG_FS_POSIX_ACL=y
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
CONFIG_MANDATORY_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_FANOTIFY=y
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
CONFIG_PRINT_QUOTA_WARNING=y
# CONFIG_QUOTA_DEBUG is not set
CONFIG_QUOTA_TREE=y
# CONFIG_QFMT_V1 is not set
CONFIG_QFMT_V2=y
CONFIG_QUOTACTL=y
CONFIG_QUOTACTL_COMPAT=y
CONFIG_AUTOFS4_FS=y
CONFIG_FUSE_FS=m
CONFIG_CUSE=m
CONFIG_OVERLAY_FS=m
# CONFIG_OVERLAY_FS_REDIRECT_DIR is not set

#
# Caches
#
CONFIG_FSCACHE=m
CONFIG_FSCACHE_STATS=y
# CONFIG_FSCACHE_HISTOGRAM is not set
# CONFIG_FSCACHE_DEBUG is not set
# CONFIG_FSCACHE_OBJECT_LIST is not set
CONFIG_CACHEFILES=m
# CONFIG_CACHEFILES_DEBUG is not set
# CONFIG_CACHEFILES_HISTOGRAM is not set

#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=m
CONFIG_UDF_NLS=y

#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
# CONFIG_FAT_DEFAULT_UTF8 is not set
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_VMCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_PROC_CHILDREN=y
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_XATTR=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
CONFIG_CONFIGFS_FS=y
CONFIG_EFIVAR_FS=y
CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ORANGEFS_FS is not set
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_ECRYPT_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_JFFS2_FS is not set
# CONFIG_UBIFS_FS is not set
CONFIG_CRAMFS=m
CONFIG_SQUASHFS=m
CONFIG_SQUASHFS_FILE_CACHE=y
# CONFIG_SQUASHFS_FILE_DIRECT is not set
CONFIG_SQUASHFS_DECOMP_SINGLE=y
# CONFIG_SQUASHFS_DECOMP_MULTI is not set
# CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU is not set
CONFIG_SQUASHFS_XATTR=y
CONFIG_SQUASHFS_ZLIB=y
# CONFIG_SQUASHFS_LZ4 is not set
CONFIG_SQUASHFS_LZO=y
CONFIG_SQUASHFS_XZ=y
# CONFIG_SQUASHFS_4K_DEVBLK_SIZE is not set
# CONFIG_SQUASHFS_EMBEDDED is not set
CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX6FS_FS is not set
# CONFIG_ROMFS_FS is not set
CONFIG_PSTORE=y
CONFIG_PSTORE_ZLIB_COMPRESS=y
# CONFIG_PSTORE_LZO_COMPRESS is not set
# CONFIG_PSTORE_LZ4_COMPRESS is not set
CONFIG_PSTORE_CONSOLE=y
CONFIG_PSTORE_PMSG=y
# CONFIG_PSTORE_FTRACE is not set
CONFIG_PSTORE_RAM=m
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_EXOFS_FS is not set
CONFIG_ORE=m
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
# CONFIG_NFS_V2 is not set
CONFIG_NFS_V3=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=m
# CONFIG_NFS_SWAP is not set
CONFIG_NFS_V4_1=y
CONFIG_NFS_V4_2=y
CONFIG_PNFS_FILE_LAYOUT=m
CONFIG_PNFS_BLOCK=m
CONFIG_PNFS_OBJLAYOUT=m
CONFIG_PNFS_FLEXFILE_LAYOUT=m
CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN="kernel.org"
# CONFIG_NFS_V4_1_MIGRATION is not set
CONFIG_NFS_V4_SECURITY_LABEL=y
CONFIG_ROOT_NFS=y
# CONFIG_NFS_USE_LEGACY_DNS is not set
CONFIG_NFS_USE_KERNEL_DNS=y
CONFIG_NFS_DEBUG=y
CONFIG_NFSD=m
CONFIG_NFSD_V2_ACL=y
CONFIG_NFSD_V3=y
CONFIG_NFSD_V3_ACL=y
CONFIG_NFSD_V4=y
# CONFIG_NFSD_BLOCKLAYOUT is not set
# CONFIG_NFSD_SCSILAYOUT is not set
# CONFIG_NFSD_FLEXFILELAYOUT is not set
CONFIG_NFSD_V4_SECURITY_LABEL=y
# CONFIG_NFSD_FAULT_INJECTION is not set
CONFIG_GRACE_PERIOD=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_NFS_ACL_SUPPORT=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=m
CONFIG_SUNRPC_BACKCHANNEL=y
CONFIG_RPCSEC_GSS_KRB5=m
CONFIG_SUNRPC_DEBUG=y
# CONFIG_CEPH_FS is not set
CONFIG_CIFS=m
CONFIG_CIFS_STATS=y
# CONFIG_CIFS_STATS2 is not set
CONFIG_CIFS_WEAK_PW_HASH=y
CONFIG_CIFS_UPCALL=y
CONFIG_CIFS_XATTR=y
CONFIG_CIFS_POSIX=y
CONFIG_CIFS_ACL=y
CONFIG_CIFS_DEBUG=y
# CONFIG_CIFS_DEBUG2 is not set
CONFIG_CIFS_DFS_UPCALL=y
CONFIG_CIFS_SMB2=y
# CONFIG_CIFS_SMB311 is not set
# CONFIG_CIFS_FSCACHE is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_9P_FS=y
CONFIG_9P_FS_POSIX_ACL=y
# CONFIG_9P_FS_SECURITY is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_CODEPAGE_737=m
CONFIG_NLS_CODEPAGE_775=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_CODEPAGE_852=m
CONFIG_NLS_CODEPAGE_855=m
CONFIG_NLS_CODEPAGE_857=m
CONFIG_NLS_CODEPAGE_860=m
CONFIG_NLS_CODEPAGE_861=m
CONFIG_NLS_CODEPAGE_862=m
CONFIG_NLS_CODEPAGE_863=m
CONFIG_NLS_CODEPAGE_864=m
CONFIG_NLS_CODEPAGE_865=m
CONFIG_NLS_CODEPAGE_866=m
CONFIG_NLS_CODEPAGE_869=m
CONFIG_NLS_CODEPAGE_936=m
CONFIG_NLS_CODEPAGE_950=m
CONFIG_NLS_CODEPAGE_932=m
CONFIG_NLS_CODEPAGE_949=m
CONFIG_NLS_CODEPAGE_874=m
CONFIG_NLS_ISO8859_8=m
CONFIG_NLS_CODEPAGE_1250=m
CONFIG_NLS_CODEPAGE_1251=m
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=m
CONFIG_NLS_ISO8859_2=m
CONFIG_NLS_ISO8859_3=m
CONFIG_NLS_ISO8859_4=m
CONFIG_NLS_ISO8859_5=m
CONFIG_NLS_ISO8859_6=m
CONFIG_NLS_ISO8859_7=m
CONFIG_NLS_ISO8859_9=m
CONFIG_NLS_ISO8859_13=m
CONFIG_NLS_ISO8859_14=m
CONFIG_NLS_ISO8859_15=m
CONFIG_NLS_KOI8_R=m
CONFIG_NLS_KOI8_U=m
CONFIG_NLS_MAC_ROMAN=m
CONFIG_NLS_MAC_CELTIC=m
CONFIG_NLS_MAC_CENTEURO=m
CONFIG_NLS_MAC_CROATIAN=m
CONFIG_NLS_MAC_CYRILLIC=m
CONFIG_NLS_MAC_GAELIC=m
CONFIG_NLS_MAC_GREEK=m
CONFIG_NLS_MAC_ICELAND=m
CONFIG_NLS_MAC_INUIT=m
CONFIG_NLS_MAC_ROMANIAN=m
CONFIG_NLS_MAC_TURKISH=m
CONFIG_NLS_UTF8=m
CONFIG_DLM=m
CONFIG_DLM_DEBUG=y

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y

#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
CONFIG_BOOT_PRINTK_DELAY=y
CONFIG_DYNAMIC_DEBUG=y

#
# Compile-time checks and compiler options
#
# CONFIG_DEBUG_INFO is not set
# CONFIG_ENABLE_WARN_DEPRECATED is not set
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=2048
CONFIG_STRIP_ASM_SYMS=y
# CONFIG_READABLE_ASM is not set
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_PAGE_OWNER is not set
CONFIG_DEBUG_FS=y
CONFIG_HEADERS_CHECK=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
CONFIG_ARCH_WANT_FRAME_POINTERS=y
CONFIG_FRAME_POINTER=y
# CONFIG_STACK_VALIDATION is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_MAGIC_SYSRQ_SERIAL=y
CONFIG_DEBUG_KERNEL=y

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_PAGE_REF is not set
CONFIG_DEBUG_RODATA_TEST=y
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_VM is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
# CONFIG_DEBUG_VIRTUAL is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
# CONFIG_DEBUG_PER_CPU_MAPS is not set
CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_HAVE_ARCH_KMEMCHECK=y
CONFIG_HAVE_ARCH_KASAN=y
# CONFIG_KASAN is not set
CONFIG_ARCH_HAS_KCOV=y
# CONFIG_KCOV is not set
CONFIG_DEBUG_SHIRQ=y

#
# Debug Lockups and Hangs
#
CONFIG_LOCKUP_DETECTOR=y
CONFIG_HARDLOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=1
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_WQ_WATCHDOG is not set
CONFIG_PANIC_ON_OOPS=y
CONFIG_PANIC_ON_OOPS_VALUE=1
CONFIG_PANIC_TIMEOUT=0
CONFIG_SCHED_DEBUG=y
CONFIG_SCHED_INFO=y
CONFIG_SCHEDSTATS=y
# CONFIG_SCHED_STACK_END_CHECK is not set
# CONFIG_DEBUG_TIMEKEEPING is not set

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
CONFIG_DEBUG_ATOMIC_SLEEP=y
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
CONFIG_LOCK_TORTURE_TEST=m
# CONFIG_WW_MUTEX_SELFTEST is not set
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_LIST=y
# CONFIG_DEBUG_PI_LIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set

#
# RCU Debugging
#
# CONFIG_PROVE_RCU is not set
CONFIG_SPARSE_RCU_POINTER=y
CONFIG_TORTURE_TEST=m
# CONFIG_RCU_PERF_TEST is not set
CONFIG_RCU_TORTURE_TEST=m
# CONFIG_RCU_TORTURE_TEST_SLOW_PREINIT is not set
# CONFIG_RCU_TORTURE_TEST_SLOW_INIT is not set
# CONFIG_RCU_TORTURE_TEST_SLOW_CLEANUP is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=60
# CONFIG_RCU_TRACE is not set
# CONFIG_RCU_EQS_DEBUG is not set
# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
CONFIG_NOTIFIER_ERROR_INJECTION=m
CONFIG_PM_NOTIFIER_ERROR_INJECT=m
# CONFIG_NETDEV_NOTIFIER_ERROR_INJECT is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_LATENCYTOP=y
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_FENTRY=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACER_MAX_TRACE=y
CONFIG_TRACE_CLOCK=y
CONFIG_RING_BUFFER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_RING_BUFFER_ALLOW_SWAP=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
CONFIG_FUNCTION_TRACER=y
CONFIG_FUNCTION_GRAPH_TRACER=y
# CONFIG_IRQSOFF_TRACER is not set
CONFIG_SCHED_TRACER=y
# CONFIG_HWLAT_TRACER is not set
CONFIG_FTRACE_SYSCALLS=y
CONFIG_TRACER_SNAPSHOT=y
# CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
CONFIG_STACK_TRACER=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_KPROBE_EVENTS=y
# CONFIG_UPROBE_EVENTS is not set
CONFIG_BPF_EVENTS=y
CONFIG_PROBE_EVENTS=y
CONFIG_DYNAMIC_FTRACE=y
CONFIG_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_FUNCTION_PROFILER=y
CONFIG_FTRACE_MCOUNT_RECORD=y
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_MMIOTRACE is not set
CONFIG_TRACING_MAP=y
CONFIG_HIST_TRIGGERS=y
# CONFIG_TRACEPOINT_BENCHMARK is not set
CONFIG_RING_BUFFER_BENCHMARK=m
# CONFIG_RING_BUFFER_STARTUP_TEST is not set
# CONFIG_TRACE_ENUM_MAP_FILE is not set
CONFIG_TRACING_EVENTS_GPIO=y

#
# Runtime Testing
#
CONFIG_LKDTM=m
# CONFIG_TEST_LIST_SORT is not set
# CONFIG_TEST_SORT is not set
# CONFIG_KPROBES_SANITY_TEST is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
CONFIG_RBTREE_TEST=m
CONFIG_INTERVAL_TREE_TEST=m
CONFIG_PERCPU_TEST=m
CONFIG_ATOMIC64_SELFTEST=y
CONFIG_ASYNC_RAID6_TEST=m
# CONFIG_TEST_HEXDUMP is not set
# CONFIG_TEST_STRING_HELPERS is not set
CONFIG_TEST_KSTRTOX=m
CONFIG_TEST_PRINTF=m
CONFIG_TEST_BITMAP=m
# CONFIG_TEST_UUID is not set
# CONFIG_TEST_RHASHTABLE is not set
# CONFIG_TEST_HASH is not set
CONFIG_PROVIDE_OHCI1394_DMA_INIT=y
# CONFIG_DMA_API_DEBUG is not set
CONFIG_TEST_LKM=m
CONFIG_TEST_USER_COPY=m
CONFIG_TEST_BPF=m
CONFIG_TEST_FIRMWARE=m
CONFIG_TEST_UDELAY=m
# CONFIG_MEMTEST is not set
CONFIG_TEST_STATIC_KEYS=m
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
# CONFIG_ARCH_WANTS_UBSAN_NO_NULL is not set
# CONFIG_UBSAN is not set
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
CONFIG_STRICT_DEVMEM=y
# CONFIG_IO_STRICT_DEVMEM is not set
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
CONFIG_EARLY_PRINTK_DBGP=y
# CONFIG_EARLY_PRINTK_EFI is not set
# CONFIG_X86_PTDUMP_CORE is not set
# CONFIG_X86_PTDUMP is not set
# CONFIG_EFI_PGT_DUMP is not set
# CONFIG_DEBUG_WX is not set
CONFIG_DOUBLEFAULT=y
# CONFIG_DEBUG_TLBFLUSH is not set
# CONFIG_IOMMU_DEBUG is not set
# CONFIG_IOMMU_STRESS is not set
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_X86_DECODER_SELFTEST=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
CONFIG_IO_DELAY_0X80=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=0
CONFIG_DEBUG_BOOT_PARAMS=y
# CONFIG_CPA_DEBUG is not set
CONFIG_OPTIMIZE_INLINING=y
# CONFIG_DEBUG_ENTRY is not set
# CONFIG_DEBUG_NMI_SELFTEST is not set
CONFIG_X86_DEBUG_FPU=y
# CONFIG_PUNIT_ATOM_DEBUG is not set

#
# Security options
#
CONFIG_KEYS=y
CONFIG_PERSISTENT_KEYRINGS=y
CONFIG_BIG_KEYS=y
CONFIG_TRUSTED_KEYS=y
CONFIG_ENCRYPTED_KEYS=y
# CONFIG_KEY_DH_OPERATIONS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
CONFIG_SECURITY=y
CONFIG_SECURITYFS=y
CONFIG_SECURITY_NETWORK=y
CONFIG_SECURITY_NETWORK_XFRM=y
# CONFIG_SECURITY_PATH is not set
CONFIG_INTEL_TXT=y
CONFIG_LSM_MMAP_MIN_ADDR=65535
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
CONFIG_HAVE_ARCH_HARDENED_USERCOPY=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SELINUX_BOOTPARAM=y
CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=1
CONFIG_SECURITY_SELINUX_DISABLE=y
CONFIG_SECURITY_SELINUX_DEVELOP=y
CONFIG_SECURITY_SELINUX_AVC_STATS=y
CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=1
# CONFIG_SECURITY_SMACK is not set
# CONFIG_SECURITY_TOMOYO is not set
# CONFIG_SECURITY_APPARMOR is not set
# CONFIG_SECURITY_LOADPIN is not set
# CONFIG_SECURITY_YAMA is not set
CONFIG_INTEGRITY=y
CONFIG_INTEGRITY_SIGNATURE=y
CONFIG_INTEGRITY_ASYMMETRIC_KEYS=y
CONFIG_INTEGRITY_TRUSTED_KEYRING=y
CONFIG_INTEGRITY_AUDIT=y
CONFIG_IMA=y
CONFIG_IMA_MEASURE_PCR_IDX=10
CONFIG_IMA_LSM_RULES=y
# CONFIG_IMA_TEMPLATE is not set
CONFIG_IMA_NG_TEMPLATE=y
# CONFIG_IMA_SIG_TEMPLATE is not set
CONFIG_IMA_DEFAULT_TEMPLATE="ima-ng"
CONFIG_IMA_DEFAULT_HASH_SHA1=y
# CONFIG_IMA_DEFAULT_HASH_SHA256 is not set
# CONFIG_IMA_DEFAULT_HASH_SHA512 is not set
# CONFIG_IMA_DEFAULT_HASH_WP512 is not set
CONFIG_IMA_DEFAULT_HASH="sha1"
# CONFIG_IMA_WRITE_POLICY is not set
# CONFIG_IMA_READ_POLICY is not set
CONFIG_IMA_APPRAISE=y
CONFIG_IMA_TRUSTED_KEYRING=y
# CONFIG_IMA_BLACKLIST_KEYRING is not set
# CONFIG_IMA_LOAD_X509 is not set
CONFIG_EVM=y
CONFIG_EVM_ATTR_FSUUID=y
# CONFIG_EVM_LOAD_X509 is not set
CONFIG_DEFAULT_SECURITY_SELINUX=y
# CONFIG_DEFAULT_SECURITY_DAC is not set
CONFIG_DEFAULT_SECURITY="selinux"
CONFIG_XOR_BLOCKS=m
CONFIG_ASYNC_CORE=m
CONFIG_ASYNC_MEMCPY=m
CONFIG_ASYNC_XOR=m
CONFIG_ASYNC_PQ=m
CONFIG_ASYNC_RAID6_RECOV=m
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_RNG_DEFAULT=y
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_AKCIPHER=y
CONFIG_CRYPTO_KPP2=y
CONFIG_CRYPTO_ACOMP2=y
CONFIG_CRYPTO_RSA=y
# CONFIG_CRYPTO_DH is not set
# CONFIG_CRYPTO_ECDH is not set
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
CONFIG_CRYPTO_USER=m
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
CONFIG_CRYPTO_GF128MUL=m
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_NULL2=y
CONFIG_CRYPTO_PCRYPT=m
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_CRYPTO_CRYPTD=m
# CONFIG_CRYPTO_MCRYPTD is not set
CONFIG_CRYPTO_AUTHENC=m
CONFIG_CRYPTO_TEST=m
CONFIG_CRYPTO_ABLK_HELPER=m
CONFIG_CRYPTO_SIMD=m
CONFIG_CRYPTO_GLUE_HELPER_X86=m
CONFIG_CRYPTO_ENGINE=m

#
# Authenticated Encryption with Associated Data
#
CONFIG_CRYPTO_CCM=m
CONFIG_CRYPTO_GCM=m
# CONFIG_CRYPTO_CHACHA20POLY1305 is not set
CONFIG_CRYPTO_SEQIV=y
CONFIG_CRYPTO_ECHAINIV=m

#
# Block modes
#
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CTR=y
CONFIG_CRYPTO_CTS=m
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_LRW=m
CONFIG_CRYPTO_PCBC=m
CONFIG_CRYPTO_XTS=m
# CONFIG_CRYPTO_KEYWRAP is not set

#
# Hash modes
#
CONFIG_CRYPTO_CMAC=m
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_XCBC=m
CONFIG_CRYPTO_VMAC=m

#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_CRC32C_INTEL=m
CONFIG_CRYPTO_CRC32=m
CONFIG_CRYPTO_CRC32_PCLMUL=m
CONFIG_CRYPTO_CRCT10DIF=y
CONFIG_CRYPTO_CRCT10DIF_PCLMUL=m
CONFIG_CRYPTO_GHASH=m
# CONFIG_CRYPTO_POLY1305 is not set
# CONFIG_CRYPTO_POLY1305_X86_64 is not set
CONFIG_CRYPTO_MD4=m
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_RMD128=m
CONFIG_CRYPTO_RMD160=m
CONFIG_CRYPTO_RMD256=m
CONFIG_CRYPTO_RMD320=m
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA1_SSSE3=m
CONFIG_CRYPTO_SHA256_SSSE3=m
CONFIG_CRYPTO_SHA512_SSSE3=m
# CONFIG_CRYPTO_SHA1_MB is not set
# CONFIG_CRYPTO_SHA256_MB is not set
# CONFIG_CRYPTO_SHA512_MB is not set
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=m
# CONFIG_CRYPTO_SHA3 is not set
CONFIG_CRYPTO_TGR192=m
CONFIG_CRYPTO_WP512=m
CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL=m

#
# Ciphers
#
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_AES_TI is not set
CONFIG_CRYPTO_AES_X86_64=y
CONFIG_CRYPTO_AES_NI_INTEL=m
CONFIG_CRYPTO_ANUBIS=m
CONFIG_CRYPTO_ARC4=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_BLOWFISH_COMMON=m
CONFIG_CRYPTO_BLOWFISH_X86_64=m
CONFIG_CRYPTO_CAMELLIA=m
CONFIG_CRYPTO_CAMELLIA_X86_64=m
CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64=m
CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64=m
CONFIG_CRYPTO_CAST_COMMON=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST5_AVX_X86_64=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_CAST6_AVX_X86_64=m
CONFIG_CRYPTO_DES=m
# CONFIG_CRYPTO_DES3_EDE_X86_64 is not set
CONFIG_CRYPTO_FCRYPT=m
CONFIG_CRYPTO_KHAZAD=m
CONFIG_CRYPTO_SALSA20=m
CONFIG_CRYPTO_SALSA20_X86_64=m
# CONFIG_CRYPTO_CHACHA20 is not set
# CONFIG_CRYPTO_CHACHA20_X86_64 is not set
CONFIG_CRYPTO_SEED=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_SERPENT_SSE2_X86_64=m
CONFIG_CRYPTO_SERPENT_AVX_X86_64=m
CONFIG_CRYPTO_SERPENT_AVX2_X86_64=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
CONFIG_CRYPTO_TWOFISH_X86_64=m
CONFIG_CRYPTO_TWOFISH_X86_64_3WAY=m
CONFIG_CRYPTO_TWOFISH_AVX_X86_64=m

#
# Compression
#
CONFIG_CRYPTO_DEFLATE=m
CONFIG_CRYPTO_LZO=y
# CONFIG_CRYPTO_842 is not set
# CONFIG_CRYPTO_LZ4 is not set
# CONFIG_CRYPTO_LZ4HC is not set

#
# Random Number Generation
#
CONFIG_CRYPTO_ANSI_CPRNG=m
CONFIG_CRYPTO_DRBG_MENU=y
CONFIG_CRYPTO_DRBG_HMAC=y
# CONFIG_CRYPTO_DRBG_HASH is not set
# CONFIG_CRYPTO_DRBG_CTR is not set
CONFIG_CRYPTO_DRBG=y
CONFIG_CRYPTO_JITTERENTROPY=y
CONFIG_CRYPTO_USER_API=y
CONFIG_CRYPTO_USER_API_HASH=y
CONFIG_CRYPTO_USER_API_SKCIPHER=y
# CONFIG_CRYPTO_USER_API_RNG is not set
# CONFIG_CRYPTO_USER_API_AEAD is not set
CONFIG_CRYPTO_HASH_INFO=y
CONFIG_CRYPTO_HW=y
CONFIG_CRYPTO_DEV_PADLOCK=m
CONFIG_CRYPTO_DEV_PADLOCK_AES=m
CONFIG_CRYPTO_DEV_PADLOCK_SHA=m
# CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API_DESC is not set
# CONFIG_CRYPTO_DEV_CCP is not set
# CONFIG_CRYPTO_DEV_QAT_DH895xCC is not set
# CONFIG_CRYPTO_DEV_QAT_C3XXX is not set
# CONFIG_CRYPTO_DEV_QAT_C62X is not set
# CONFIG_CRYPTO_DEV_QAT_DH895xCCVF is not set
# CONFIG_CRYPTO_DEV_QAT_C3XXXVF is not set
# CONFIG_CRYPTO_DEV_QAT_C62XVF is not set
# CONFIG_CRYPTO_DEV_CHELSIO is not set
CONFIG_CRYPTO_DEV_VIRTIO=m
CONFIG_ASYMMETRIC_KEY_TYPE=y
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
CONFIG_X509_CERTIFICATE_PARSER=y
# CONFIG_PKCS7_MESSAGE_PARSER is not set

#
# Certificates for signature checking
#
CONFIG_SYSTEM_TRUSTED_KEYRING=y
CONFIG_SYSTEM_TRUSTED_KEYS=""
# CONFIG_SYSTEM_EXTRA_CERTIFICATE is not set
# CONFIG_SECONDARY_TRUSTED_KEYRING is not set
CONFIG_HAVE_KVM=y
CONFIG_HAVE_KVM_IRQCHIP=y
CONFIG_HAVE_KVM_IRQFD=y
CONFIG_HAVE_KVM_IRQ_ROUTING=y
CONFIG_HAVE_KVM_EVENTFD=y
CONFIG_KVM_MMIO=y
CONFIG_KVM_ASYNC_PF=y
CONFIG_HAVE_KVM_MSI=y
CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y
CONFIG_KVM_VFIO=y
CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y
CONFIG_KVM_COMPAT=y
CONFIG_HAVE_KVM_IRQ_BYPASS=y
CONFIG_VIRTUALIZATION=y
CONFIG_KVM=m
CONFIG_KVM_INTEL=m
CONFIG_KVM_AMD=m
CONFIG_KVM_MMU_AUDIT=y
# CONFIG_KVM_DEVICE_ASSIGNMENT is not set
CONFIG_VHOST_NET=m
# CONFIG_VHOST_SCSI is not set
# CONFIG_VHOST_VSOCK is not set
CONFIG_VHOST=m
# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set
CONFIG_BINARY_PRINTF=y

#
# Library routines
#
CONFIG_RAID6_PQ=m
CONFIG_BITREVERSE=y
# CONFIG_HAVE_ARCH_BITREVERSE is not set
CONFIG_RATIONAL=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_IO=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=y
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=m
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=y
CONFIG_CRC8=m
# CONFIG_AUDIT_ARCH_COMPAT_GENERIC is not set
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_LZ4_DECOMPRESS=y
CONFIG_XZ_DEC=y
CONFIG_XZ_DEC_X86=y
CONFIG_XZ_DEC_POWERPC=y
CONFIG_XZ_DEC_IA64=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_ARMTHUMB=y
CONFIG_XZ_DEC_SPARC=y
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DECOMPRESS_XZ=y
CONFIG_DECOMPRESS_LZO=y
CONFIG_DECOMPRESS_LZ4=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_REED_SOLOMON=m
CONFIG_REED_SOLOMON_ENC8=y
CONFIG_REED_SOLOMON_DEC8=y
CONFIG_TEXTSEARCH=y
CONFIG_TEXTSEARCH_KMP=m
CONFIG_TEXTSEARCH_BM=m
CONFIG_TEXTSEARCH_FSM=m
CONFIG_BTREE=y
CONFIG_INTERVAL_TREE=y
CONFIG_RADIX_TREE_MULTIORDER=y
CONFIG_ASSOCIATIVE_ARRAY=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
# CONFIG_DMA_NOOP_OPS is not set
# CONFIG_DMA_VIRT_OPS is not set
CONFIG_CHECK_SIGNATURE=y
CONFIG_CPUMASK_OFFSTACK=y
CONFIG_CPU_RMAP=y
CONFIG_DQL=y
CONFIG_GLOB=y
# CONFIG_GLOB_SELFTEST is not set
CONFIG_NLATTR=y
CONFIG_CLZ_TAB=y
CONFIG_CORDIC=m
# CONFIG_DDR is not set
CONFIG_IRQ_POLL=y
CONFIG_MPILIB=y
CONFIG_SIGNATURE=y
CONFIG_OID_REGISTRY=y
CONFIG_UCS2_STRING=y
CONFIG_FONT_SUPPORT=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_SG_SPLIT is not set
CONFIG_SG_POOL=y
CONFIG_ARCH_HAS_SG_CHAIN=y
CONFIG_ARCH_HAS_PMEM_API=y
CONFIG_ARCH_HAS_MMIO_FLUSH=y
CONFIG_SBITMAP=y

[-- Attachment #3: job-script.ksh --]
[-- Type: text/plain, Size: 6777 bytes --]

#!/bin/sh

export_top_env()
{
	export suite='unixbench'
	export testcase='unixbench'
	export category='benchmark'
	export runtime=300
	export nr_task=4
	export job_origin='/lkp/lkp/.src-20170421-123358/allot/cyclic:linux-devel:devel-hourly/lkp-ivb-d04/unixbench.yaml'
	export queue='bisect'
	export testbox='lkp-ivb-d04'
	export tbox_group='lkp-ivb-d04'
	export submit_id='5901136f0b9a93bfce755a7e'
	export job_file='/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.yaml'
	export id='08de2401e2e77aabc2f5316076e9c3f42ddb39e7'
	export model='Ivy Bridge'
	export nr_cpu=4
	export memory='4G'
	export nr_hdd_partitions=0
	export hdd_partitions=
	export netconsole_port=6675
	export brand='Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz'
	export commit='95510aef27899c42a1b8c25a656b44d31fc5fcad'
	export kconfig='x86_64-rhel-7.2'
	export compiler='gcc-6'
	export rootfs='debian-x86_64-2016-08-31.cgz'
	export enqueue_time='2017-04-27 05:38:56 +0800'
	export _id='5901136f0b9a93bfce755a7e'
	export _rt='/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad'
	export user='lkp'
	export head_commit='b381f0f40c5b1dffb5fe50e623573500537d6df1'
	export base_commit='4f7d029b9bf009fbee76bb10c0c4351a1870d2f3'
	export branch='linux-devel/devel-hourly-2017042307'
	export result_root='/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/0'
	export LKP_SERVER='inn'
	export max_uptime=1500
	export initrd='/osimage/debian/debian-x86_64-2016-08-31.cgz'
	export bootloader_append='root=/dev/ram0
user=lkp
job=/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.yaml
ARCH=x86_64
kconfig=x86_64-rhel-7.2
branch=linux-devel/devel-hourly-2017042307
commit=95510aef27899c42a1b8c25a656b44d31fc5fcad
BOOT_IMAGE=/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/vmlinuz-4.11.0-rc6-01591-g95510ae
max_uptime=1500
RESULT_ROOT=/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/0
LKP_SERVER=inn
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
printk.devkmsg=on
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
drbd.minor_count=8
systemd.log_level=err
ignore_loglevel
earlyprintk=ttyS0,115200
console=ttyS0,115200
console=tty0
vga=normal
rw'
	export lkp_initrd='/lkp/lkp/lkp-x86_64.cgz'
	export modules_initrd='/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/modules.cgz'
	export bm_initrd='/osimage/deps/debian-x86_64-2016-08-31.cgz/lkp_2017-04-26.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/rsync-rootfs_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/run-ipconfig_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/unixbench_2016-11-15.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/unixbench-x86_64_2017-04-11.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/iostat_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/turbostat_2016-11-15.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/turbostat-x86_64_2016-09-02.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/perf_2016-11-16.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/perf-x86_64_2016-11-16.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/hw_2016-11-15.cgz'
	export site='inn'
	export LKP_CGI_PORT=80
	export LKP_CIFS_PORT=139
	export kernel='/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/vmlinuz-4.11.0-rc6-01591-g95510ae'
	export dequeue_time='2017-04-27 05:58:38 +0800'
	export job_initrd='/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.cgz'

	[ -n "$LKP_SRC" ] ||
	export LKP_SRC=/lkp/${user:-lkp}/src
}

run_job()
{
	echo $$ > $TMP/run-job.pid

	. $LKP_SRC/lib/http.sh
	. $LKP_SRC/lib/job.sh
	. $LKP_SRC/lib/env.sh

	export_top_env

	run_setup $LKP_SRC/setup/cpufreq_governor 'performance'

	run_monitor $LKP_SRC/monitors/wrapper kmsg
	run_monitor $LKP_SRC/monitors/wrapper iostat
	run_monitor $LKP_SRC/monitors/wrapper heartbeat
	run_monitor $LKP_SRC/monitors/wrapper vmstat
	run_monitor $LKP_SRC/monitors/wrapper numa-numastat
	run_monitor $LKP_SRC/monitors/wrapper numa-vmstat
	run_monitor $LKP_SRC/monitors/wrapper numa-meminfo
	run_monitor $LKP_SRC/monitors/wrapper proc-vmstat
	run_monitor $LKP_SRC/monitors/wrapper proc-stat
	run_monitor $LKP_SRC/monitors/wrapper meminfo
	run_monitor $LKP_SRC/monitors/wrapper slabinfo
	run_monitor $LKP_SRC/monitors/wrapper interrupts
	run_monitor $LKP_SRC/monitors/wrapper lock_stat
	run_monitor $LKP_SRC/monitors/wrapper latency_stats
	run_monitor $LKP_SRC/monitors/wrapper softirqs
	run_monitor $LKP_SRC/monitors/one-shot/wrapper bdi_dev_mapping
	run_monitor $LKP_SRC/monitors/wrapper diskstats
	run_monitor $LKP_SRC/monitors/wrapper nfsstat
	run_monitor $LKP_SRC/monitors/wrapper cpuidle
	run_monitor $LKP_SRC/monitors/wrapper cpufreq-stats
	run_monitor $LKP_SRC/monitors/wrapper turbostat
	run_monitor $LKP_SRC/monitors/wrapper sched_debug
	run_monitor $LKP_SRC/monitors/wrapper perf-stat
	run_monitor $LKP_SRC/monitors/wrapper mpstat
	run_monitor $LKP_SRC/monitors/no-stdout/wrapper perf-profile
	run_monitor $LKP_SRC/monitors/wrapper oom-killer
	run_monitor $LKP_SRC/monitors/plain/watchdog
	run_monitor $LKP_SRC/monitors/wrapper nfs-hang

	run_test test='context1' $LKP_SRC/tests/wrapper unixbench
}

extract_stats()
{
	$LKP_SRC/stats/wrapper unixbench
	$LKP_SRC/stats/wrapper kmsg
	$LKP_SRC/stats/wrapper iostat
	$LKP_SRC/stats/wrapper vmstat
	$LKP_SRC/stats/wrapper numa-numastat
	$LKP_SRC/stats/wrapper numa-vmstat
	$LKP_SRC/stats/wrapper numa-meminfo
	$LKP_SRC/stats/wrapper proc-vmstat
	$LKP_SRC/stats/wrapper meminfo
	$LKP_SRC/stats/wrapper slabinfo
	$LKP_SRC/stats/wrapper interrupts
	$LKP_SRC/stats/wrapper lock_stat
	$LKP_SRC/stats/wrapper latency_stats
	$LKP_SRC/stats/wrapper softirqs
	$LKP_SRC/stats/wrapper diskstats
	$LKP_SRC/stats/wrapper nfsstat
	$LKP_SRC/stats/wrapper cpuidle
	$LKP_SRC/stats/wrapper turbostat
	$LKP_SRC/stats/wrapper sched_debug
	$LKP_SRC/stats/wrapper perf-stat
	$LKP_SRC/stats/wrapper mpstat
	$LKP_SRC/stats/wrapper perf-profile

	$LKP_SRC/stats/wrapper time unixbench.time
	$LKP_SRC/stats/wrapper time
	$LKP_SRC/stats/wrapper dmesg
	$LKP_SRC/stats/wrapper kmsg
	$LKP_SRC/stats/wrapper stderr
	$LKP_SRC/stats/wrapper last_state
}

"$@"

[-- Attachment #4: dmesg.xz --]
[-- Type: application/octet-stream, Size: 21144 bytes --]

[-- Attachment #5: unixbench.ksh --]
[-- Type: text/plain, Size: 2621 bytes --]

2017-04-27 06:00:14 ./Run context1 -c 4 -i 30

   #    #  #    #  #  #    #          #####   ######  #    #   ####   #    #
   #    #  ##   #  #   #  #           #    #  #       ##   #  #    #  #    #
   #    #  # #  #  #    ##            #####   #####   # #  #  #       ######
   #    #  #  # #  #    ##            #    #  #       #  # #  #       #    #
   #    #  #   ##  #   #  #           #    #  #       #   ##  #    #  #    #
    ####   #    #  #  #    #          #####   ######  #    #   ####   #    #

   Version 5.1.3                      Based on the Byte Magazine Unix Benchmark

   Multi-CPU version                  Version 5 revisions by Ian Smith,
                                      Sunnyvale, CA, USA
   January 13, 2011                   johantheghost at yahoo period com


4 x Pipe-based Context Switching  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

========================================================================
   BYTE UNIX Benchmarks (Version 5.1.3)

   System: lkp-ivb-d04: GNU/Linux
   OS: GNU/Linux -- 4.11.0-rc6-01591-g95510ae -- #1 SMP Thu Apr 27 05:48:32 CST 2017
   Machine: x86_64 (unknown)
   Language: C (charmap="ANSI_X3.4-1968", collate="ANSI_X3.4-1968")
   CPU 0: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (6584.7 bogomips)
          Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization
   CPU 1: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (6588.3 bogomips)
          Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization
   CPU 2: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (6590.6 bogomips)
          Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization
   CPU 3: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (6588.8 bogomips)
          Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET, Intel virtualization
   06:00:14 up 1 min,  0 users,  load average: 0.61, 0.14, 0.04; runlevel 

------------------------------------------------------------------------
Benchmark Run: Thu Apr 27 2017 06:00:14 - 06:06:44
4 CPUs in system; running 4 parallel copies of tests

Pipe-based Context Switching                 562630.9 lps   (10.0 s, 20 samples)

System Benchmarks Partial Index              BASELINE       RESULT    INDEX
Pipe-based Context Switching                   4000.0     562630.9   1406.6
                                                                   ========
System Benchmarks Index Score (Partial Only)                         1406.6


[-- Attachment #6: job.yaml --]
[-- Type: text/plain, Size: 4379 bytes --]

---

#! jobs/unixbench.yaml
suite: unixbench
testcase: unixbench
category: benchmark
runtime: 300s
nr_task: 100%
unixbench:
  test: context1
job_origin: "/lkp/lkp/.src-20170421-123358/allot/cyclic:linux-devel:devel-hourly/lkp-ivb-d04/unixbench.yaml"

#! queue options
queue: bisect
testbox: lkp-ivb-d04
tbox_group: lkp-ivb-d04
submit_id: 5901136f0b9a93bfce755a7e
job_file: "/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.yaml"
id: 08de2401e2e77aabc2f5316076e9c3f42ddb39e7

#! hosts/lkp-ivb-d04
model: Ivy Bridge
nr_cpu: 4
memory: 4G
nr_hdd_partitions: 0
hdd_partitions: 
netconsole_port: 6675
brand: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz

#! include/category/benchmark
kmsg: 
iostat: 
heartbeat: 
vmstat: 
numa-numastat: 
numa-vmstat: 
numa-meminfo: 
proc-vmstat: 
proc-stat: 
meminfo: 
slabinfo: 
interrupts: 
lock_stat: 
latency_stats: 
softirqs: 
bdi_dev_mapping: 
diskstats: 
nfsstat: 
cpuidle: 
cpufreq-stats: 
turbostat: 
sched_debug: 
perf-stat: 
mpstat: 
perf-profile: 

#! include/category/ALL
cpufreq_governor: performance

#! include/queue/cyclic
commit: 95510aef27899c42a1b8c25a656b44d31fc5fcad

#! default params
kconfig: x86_64-rhel-7.2
compiler: gcc-6
rootfs: debian-x86_64-2016-08-31.cgz
enqueue_time: 2017-04-27 05:38:56.017864028 +08:00
_id: 5901136f0b9a93bfce755a7e
_rt: "/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad"

#! schedule options
user: lkp
head_commit: b381f0f40c5b1dffb5fe50e623573500537d6df1
base_commit: 4f7d029b9bf009fbee76bb10c0c4351a1870d2f3
branch: linux-devel/devel-hourly-2017042307
result_root: "/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/0"
LKP_SERVER: inn
max_uptime: 1500
initrd: "/osimage/debian/debian-x86_64-2016-08-31.cgz"
bootloader_append:
- root=/dev/ram0
- user=lkp
- job=/lkp/scheduled/lkp-ivb-d04/unixbench-300s-100%-context1-performance-debian-x86_64-2016-08-31.cgz-95510aef27899c42a1b8c25a656b44d31fc5fcad-20170427-114638-1dmm963-0.yaml
- ARCH=x86_64
- kconfig=x86_64-rhel-7.2
- branch=linux-devel/devel-hourly-2017042307
- commit=95510aef27899c42a1b8c25a656b44d31fc5fcad
- BOOT_IMAGE=/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/vmlinuz-4.11.0-rc6-01591-g95510ae
- max_uptime=1500
- RESULT_ROOT=/result/unixbench/300s-100%-context1-performance/lkp-ivb-d04/debian-x86_64-2016-08-31.cgz/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/0
- LKP_SERVER=inn
- debug
- apic=debug
- sysrq_always_enabled
- rcupdate.rcu_cpu_stall_timeout=100
- net.ifnames=0
- printk.devkmsg=on
- panic=-1
- softlockup_panic=1
- nmi_watchdog=panic
- oops=panic
- load_ramdisk=2
- prompt_ramdisk=0
- drbd.minor_count=8
- systemd.log_level=err
- ignore_loglevel
- earlyprintk=ttyS0,115200
- console=ttyS0,115200
- console=tty0
- vga=normal
- rw
lkp_initrd: "/lkp/lkp/lkp-x86_64.cgz"
modules_initrd: "/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/modules.cgz"
bm_initrd: "/osimage/deps/debian-x86_64-2016-08-31.cgz/lkp_2017-04-26.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/rsync-rootfs_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/run-ipconfig_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/unixbench_2016-11-15.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/unixbench-x86_64_2017-04-11.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/iostat_2016-11-15.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/turbostat_2016-11-15.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/turbostat-x86_64_2016-09-02.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/perf_2016-11-16.cgz,/osimage/pkg/debian-x86_64-2016-08-31.cgz/perf-x86_64_2016-11-16.cgz,/osimage/deps/debian-x86_64-2016-08-31.cgz/hw_2016-11-15.cgz"
site: inn

#! /lkp/lkp/.src-20170422-064054/include/site/inn
LKP_CGI_PORT: 80
LKP_CIFS_PORT: 139
oom-killer: 
watchdog: 
nfs-hang: 

#! runtime status

#! user overrides
kernel: "/pkg/linux/x86_64-rhel-7.2/gcc-6/95510aef27899c42a1b8c25a656b44d31fc5fcad/vmlinuz-4.11.0-rc6-01591-g95510ae"
dequeue_time: 2017-04-27 05:58:38.197618487 +08:00

#! /lkp/lkp/.src-20170426-224010/include/site/inn
job_state: finished
loadavg: '4.45'

[-- Attachment #7: reproduce.ksh --]
[-- Type: text/plain, Size: 128 bytes --]


for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
do
	echo performance > $file
done

./Run context1 -c 4 -i 30

Re: [PATCH RFC net-next v4 3/7] sk_buff: remove support for csum_bad in sk_buff

[Tom Herbert]

On Thu, Apr 20, 2017 at 6:38 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> This bit was introduced with 5a21232983aa ("net: Support for csum_bad in
> skbuff") to reduce the stack workload when processing RX packets carrying
> a wrong Internet Checksum. Up to now, only one driver (besides GRO core)
> are setting it.
> The test on NAPI_GRO_CB(skb)->flush in dev_gro_receive() is now done
> before the test on same_flow, to preserve behavior in case of wrong
> checksum.
>
> Suggested-by: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
>  include/linux/netdevice.h                        |  4 +---
>  include/linux/skbuff.h                           | 23 ++---------------------
>  net/bridge/netfilter/nft_reject_bridge.c         |  5 +----
>  net/core/dev.c                                   |  8 +++-----
>  net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
>  net/ipv6/netfilter/nf_reject_ipv6.c              |  3 ---
>  7 files changed, 9 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
> index 3a8a4aa..9a08179 100644
> --- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
> +++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
> @@ -223,7 +223,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget)
>                 skb->protocol = eth_type_trans(skb, ndev);
>                 if (unlikely(buff->is_cso_err)) {
>                         ++self->stats.rx.errors;
> -                       __skb_mark_checksum_bad(skb);
> +                       skb->ip_summed = CHECKSUM_NONE;
>                 } else {
>                         if (buff->is_ip_cso) {
>                                 __skb_incr_checksum_unnecessary(skb);
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index bf84a67..ab9e3dc 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -2546,9 +2546,7 @@ static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)
>         if (__skb_gro_checksum_validate_needed(skb, zero_okay, check))  \
>                 __ret = __skb_gro_checksum_validate_complete(skb,       \
>                                 compute_pseudo(skb, proto));            \
> -       if (__ret)                                                      \
> -               __skb_mark_checksum_bad(skb);                           \
> -       else                                                            \
> +       if (!__ret)                                                     \
>                 skb_gro_incr_csum_unnecessary(skb);                     \
>         __ret;                                                          \
>  })
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index ec4551b..927309e 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -743,7 +743,7 @@ struct sk_buff {
>         __u8                    csum_valid:1;
>         __u8                    csum_complete_sw:1;
>         __u8                    csum_level:2;
> -       __u8                    csum_bad:1;
> +       __u8                    __csum_bad_unused:1; /* one bit hole */
>
>         __u8                    dst_pending_confirm:1;
>  #ifdef CONFIG_IPV6_NDISC_NODETYPE
> @@ -3387,21 +3387,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb)
>         }
>  }
>
> -static inline void __skb_mark_checksum_bad(struct sk_buff *skb)
> -{
> -       /* Mark current checksum as bad (typically called from GRO
> -        * path). In the case that ip_summed is CHECKSUM_NONE
> -        * this must be the first checksum encountered in the packet.
> -        * When ip_summed is CHECKSUM_UNNECESSARY, this is the first
> -        * checksum after the last one validated. For UDP, a zero
> -        * checksum can not be marked as bad.
> -        */
> -
> -       if (skb->ip_summed == CHECKSUM_NONE ||
> -           skb->ip_summed == CHECKSUM_UNNECESSARY)
> -               skb->csum_bad = 1;
> -}
> -
>  /* Check if we need to perform checksum complete validation.
>   *
>   * Returns true if checksum complete is needed, false otherwise
> @@ -3455,9 +3440,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb,
>                         skb->csum_valid = 1;
>                         return 0;
>                 }
> -       } else if (skb->csum_bad) {
> -               /* ip_summed == CHECKSUM_NONE in this case */
> -               return (__force __sum16)1;
>         }
>
>         skb->csum = psum;
> @@ -3517,8 +3499,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto)
>
>  static inline bool __skb_checksum_convert_check(struct sk_buff *skb)
>  {
> -       return (skb->ip_summed == CHECKSUM_NONE &&
> -               skb->csum_valid && !skb->csum_bad);
> +       return (skb->ip_summed == CHECKSUM_NONE && skb->csum_valid);
>  }
>
>  static inline void __skb_checksum_convert(struct sk_buff *skb,
> diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
> index 346ef6b..c16dd3a 100644
> --- a/net/bridge/netfilter/nft_reject_bridge.c
> +++ b/net/bridge/netfilter/nft_reject_bridge.c
> @@ -111,7 +111,7 @@ static void nft_reject_br_send_v4_unreach(struct net *net,
>         __wsum csum;
>         u8 proto;
>
> -       if (oldskb->csum_bad || !nft_bridge_iphdr_validate(oldskb))
> +       if (!nft_bridge_iphdr_validate(oldskb))
>                 return;
>
>         /* IP header checks: fragment. */
> @@ -226,9 +226,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)
>         __be16 fo;
>         u8 proto = ip6h->nexthdr;
>
> -       if (skb->csum_bad)
> -               return false;
> -
>         if (skb_csum_unnecessary(skb))
>                 return true;
>
> diff --git a/net/core/dev.c b/net/core/dev.c
> index c7aec95..77a2d73 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -4533,9 +4533,6 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
>         if (!(skb->dev->features & NETIF_F_GRO))
>                 goto normal;
>
> -       if (skb->csum_bad)
> -               goto normal;
> -
>         gro_list_prepare(napi, skb);
>
>         rcu_read_lock();
> @@ -4595,11 +4592,12 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
>                 napi->gro_count--;
>         }
>
> +       if (NAPI_GRO_CB(skb)->flush)
> +               goto normal;
> +
>         if (same_flow)
>                 goto ok;
>
> -       if (NAPI_GRO_CB(skb)->flush)
> -               goto normal;
>
>         if (unlikely(napi->gro_count >= MAX_GRO_SKBS)) {
>                 struct sk_buff *nskb = napi->gro_list;
> diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c
> index 7cd8d0d..6f8d9e5 100644
> --- a/net/ipv4/netfilter/nf_reject_ipv4.c
> +++ b/net/ipv4/netfilter/nf_reject_ipv4.c
> @@ -172,7 +172,7 @@ void nf_send_unreach(struct sk_buff *skb_in, int code, int hook)
>         struct iphdr *iph = ip_hdr(skb_in);
>         u8 proto;
>
> -       if (skb_in->csum_bad || iph->frag_off & htons(IP_OFFSET))
> +       if (iph->frag_off & htons(IP_OFFSET))
>                 return;
>
>         if (skb_csum_unnecessary(skb_in)) {
> diff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c
> index eedee5d..f63b18e 100644
> --- a/net/ipv6/netfilter/nf_reject_ipv6.c
> +++ b/net/ipv6/netfilter/nf_reject_ipv6.c
> @@ -220,9 +220,6 @@ static bool reject6_csum_ok(struct sk_buff *skb, int hook)
>         __be16 fo;
>         u8 proto;
>
> -       if (skb->csum_bad)
> -               return false;
> -
>         if (skb_csum_unnecessary(skb))
>                 return true;
>
> --
> 2.7.4
>

Acked-by: Tom Herbert <tom@herbertland.com>

Re: [PATCH RFC net-next v4 3/7] sk_buff: remove support for csum_bad in sk_buff

[Tom Herbert]

On Thu, Apr 20, 2017 at 6:38 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> This bit was introduced with 5a21232983aa ("net: Support for csum_bad in
> skbuff") to reduce the stack workload when processing RX packets carrying
> a wrong Internet Checksum. Up to now, only one driver (besides GRO core)
> are setting it.
> The test on NAPI_GRO_CB(skb)->flush in dev_gro_receive() is now done
> before the test on same_flow, to preserve behavior in case of wrong
> checksum.
>
> Suggested-by: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
>  include/linux/netdevice.h                        |  4 +---
>  include/linux/skbuff.h                           | 23 ++---------------------
>  net/bridge/netfilter/nft_reject_bridge.c         |  5 +----
>  net/core/dev.c                                   |  8 +++-----
>  net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
>  net/ipv6/netfilter/nf_reject_ipv6.c              |  3 ---
>  7 files changed, 9 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
> index 3a8a4aa..9a08179 100644
> --- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
> +++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
> @@ -223,7 +223,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget)
>                 skb->protocol = eth_type_trans(skb, ndev);
>                 if (unlikely(buff->is_cso_err)) {
>                         ++self->stats.rx.errors;
> -                       __skb_mark_checksum_bad(skb);
> +                       skb->ip_summed = CHECKSUM_NONE;
>                 } else {
>                         if (buff->is_ip_cso) {
>                                 __skb_incr_checksum_unnecessary(skb);
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index bf84a67..ab9e3dc 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -2546,9 +2546,7 @@ static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)
>         if (__skb_gro_checksum_validate_needed(skb, zero_okay, check))  \
>                 __ret = __skb_gro_checksum_validate_complete(skb,       \
>                                 compute_pseudo(skb, proto));            \
> -       if (__ret)                                                      \
> -               __skb_mark_checksum_bad(skb);                           \
> -       else                                                            \
> +       if (!__ret)                                                     \
>                 skb_gro_incr_csum_unnecessary(skb);                     \
>         __ret;                                                          \
>  })
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index ec4551b..927309e 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -743,7 +743,7 @@ struct sk_buff {
>         __u8                    csum_valid:1;
>         __u8                    csum_complete_sw:1;
>         __u8                    csum_level:2;
> -       __u8                    csum_bad:1;
> +       __u8                    __csum_bad_unused:1; /* one bit hole */
>
>         __u8                    dst_pending_confirm:1;
>  #ifdef CONFIG_IPV6_NDISC_NODETYPE
> @@ -3387,21 +3387,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb)
>         }
>  }
>
> -static inline void __skb_mark_checksum_bad(struct sk_buff *skb)
> -{
> -       /* Mark current checksum as bad (typically called from GRO
> -        * path). In the case that ip_summed is CHECKSUM_NONE
> -        * this must be the first checksum encountered in the packet.
> -        * When ip_summed is CHECKSUM_UNNECESSARY, this is the first
> -        * checksum after the last one validated. For UDP, a zero
> -        * checksum can not be marked as bad.
> -        */
> -
> -       if (skb->ip_summed = CHECKSUM_NONE ||
> -           skb->ip_summed = CHECKSUM_UNNECESSARY)
> -               skb->csum_bad = 1;
> -}
> -
>  /* Check if we need to perform checksum complete validation.
>   *
>   * Returns true if checksum complete is needed, false otherwise
> @@ -3455,9 +3440,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb,
>                         skb->csum_valid = 1;
>                         return 0;
>                 }
> -       } else if (skb->csum_bad) {
> -               /* ip_summed = CHECKSUM_NONE in this case */
> -               return (__force __sum16)1;
>         }
>
>         skb->csum = psum;
> @@ -3517,8 +3499,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto)
>
>  static inline bool __skb_checksum_convert_check(struct sk_buff *skb)
>  {
> -       return (skb->ip_summed = CHECKSUM_NONE &&
> -               skb->csum_valid && !skb->csum_bad);
> +       return (skb->ip_summed = CHECKSUM_NONE && skb->csum_valid);
>  }
>
>  static inline void __skb_checksum_convert(struct sk_buff *skb,
> diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
> index 346ef6b..c16dd3a 100644
> --- a/net/bridge/netfilter/nft_reject_bridge.c
> +++ b/net/bridge/netfilter/nft_reject_bridge.c
> @@ -111,7 +111,7 @@ static void nft_reject_br_send_v4_unreach(struct net *net,
>         __wsum csum;
>         u8 proto;
>
> -       if (oldskb->csum_bad || !nft_bridge_iphdr_validate(oldskb))
> +       if (!nft_bridge_iphdr_validate(oldskb))
>                 return;
>
>         /* IP header checks: fragment. */
> @@ -226,9 +226,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)
>         __be16 fo;
>         u8 proto = ip6h->nexthdr;
>
> -       if (skb->csum_bad)
> -               return false;
> -
>         if (skb_csum_unnecessary(skb))
>                 return true;
>
> diff --git a/net/core/dev.c b/net/core/dev.c
> index c7aec95..77a2d73 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -4533,9 +4533,6 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
>         if (!(skb->dev->features & NETIF_F_GRO))
>                 goto normal;
>
> -       if (skb->csum_bad)
> -               goto normal;
> -
>         gro_list_prepare(napi, skb);
>
>         rcu_read_lock();
> @@ -4595,11 +4592,12 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
>                 napi->gro_count--;
>         }
>
> +       if (NAPI_GRO_CB(skb)->flush)
> +               goto normal;
> +
>         if (same_flow)
>                 goto ok;
>
> -       if (NAPI_GRO_CB(skb)->flush)
> -               goto normal;
>
>         if (unlikely(napi->gro_count >= MAX_GRO_SKBS)) {
>                 struct sk_buff *nskb = napi->gro_list;
> diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c
> index 7cd8d0d..6f8d9e5 100644
> --- a/net/ipv4/netfilter/nf_reject_ipv4.c
> +++ b/net/ipv4/netfilter/nf_reject_ipv4.c
> @@ -172,7 +172,7 @@ void nf_send_unreach(struct sk_buff *skb_in, int code, int hook)
>         struct iphdr *iph = ip_hdr(skb_in);
>         u8 proto;
>
> -       if (skb_in->csum_bad || iph->frag_off & htons(IP_OFFSET))
> +       if (iph->frag_off & htons(IP_OFFSET))
>                 return;
>
>         if (skb_csum_unnecessary(skb_in)) {
> diff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c
> index eedee5d..f63b18e 100644
> --- a/net/ipv6/netfilter/nf_reject_ipv6.c
> +++ b/net/ipv6/netfilter/nf_reject_ipv6.c
> @@ -220,9 +220,6 @@ static bool reject6_csum_ok(struct sk_buff *skb, int hook)
>         __be16 fo;
>         u8 proto;
>
> -       if (skb->csum_bad)
> -               return false;
> -
>         if (skb_csum_unnecessary(skb))
>                 return true;
>
> --
> 2.7.4
>

Acked-by: Tom Herbert <tom@herbertland.com>

[PATCH RFC net-next v4 4/7] net: use skb->csum_not_inet to identify packets needing crc32c

[Davide Caratti]

skb->csum_not_inet carries the indication on which algorithm is needed to
compute checksum on skb in the transmit path, when skb->ip_summed is equal
to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c hasn't been
yet written in L4 header, skb->csum_not_inet is assigned to 1; otherwise,
assume Internet Checksum is needed and thus set skb->csum_not_inet to 0.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h | 16 +++++++++-------
 net/core/dev.c         |  1 +
 net/sched/act_csum.c   |  1 +
 net/sctp/offload.c     |  1 +
 net/sctp/output.c      |  1 +
 5 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 927309e..419f4c8 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -189,12 +189,13 @@
  *
  *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
  *     offloading the SCTP CRC in a packet. To perform this offload the stack
- *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
- *     accordingly. Note the there is no indication in the skbuff that the
- *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
- *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers; in
- *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
+ *     will set set csum_start and csum_offset accordingly, set ip_summed to
+ *     CHECKSUM_PARTIAL and set csum_not_inet to 1, to provide an indication in
+ *     the skbuff that the CHECKSUM_PARTIAL refers to CRC32c.
+ *     A driver that supports both IP checksum offload and SCTP CRC32c offload
+ *     must verify which offload is configured for a packet by testing the
+ *     value of skb->csum_not_inet; skb_crc32c_csum_help is provided to resolve
+ *     CHECKSUM_PARTIAL on skbs where csum_not_inet is set to 1.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
@@ -615,6 +616,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,
  *	@wifi_acked_valid: wifi_acked was set
  *	@wifi_acked: whether frame was acked on wifi or not
  *	@no_fcs:  Request NIC to treat last 4 bytes as Ethernet FCS
+ *	@csum_not_inet: use CRC32c to resolve CHECKSUM_PARTIAL
  *	@dst_pending_confirm: need to confirm neighbour
   *	@napi_id: id of the NAPI struct this skb came from
  *	@secmark: security marking
@@ -743,7 +745,7 @@ struct sk_buff {
 	__u8			csum_valid:1;
 	__u8			csum_complete_sw:1;
 	__u8			csum_level:2;
-	__u8			__csum_bad_unused:1; /* one bit hole */
+	__u8			csum_not_inet:1;
 
 	__u8			dst_pending_confirm:1;
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
diff --git a/net/core/dev.c b/net/core/dev.c
index 77a2d73..9f56f87 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2642,6 +2642,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb)
 	}
 	*(__le32 *)(skb->data + offset) = crc32c_csum;
 	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_not_inet = 0;
 out:
 	return ret;
 }
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index ab6fdbd..3317a2f 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -350,6 +350,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
 	sctph->checksum = sctp_compute_cksum(skb,
 					     skb_network_offset(skb) + ihl);
 	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_not_inet = 0;
 
 	return 1;
 }
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 378f462..ef156ac 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -35,6 +35,7 @@
 static __le32 sctp_gso_make_checksum(struct sk_buff *skb)
 {
 	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_not_inet = 0;
 	return sctp_compute_cksum(skb, skb_transport_offset(skb));
 }
 
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 1409a87..e2edf2e 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -538,6 +538,7 @@ static int sctp_packet_pack(struct sctp_packet *packet,
 	} else {
 chksum:
 		head->ip_summed = CHECKSUM_PARTIAL;
+		head->csum_not_inet = 1;
 		head->csum_start = skb_transport_header(head) - head->head;
 		head->csum_offset = offsetof(struct sctphdr, checksum);
 	}
-- 
2.7.4

[PATCH RFC net-next v4 4/7] net: use skb->csum_not_inet to identify packets needing crc32c

[Davide Caratti]

skb->csum_not_inet carries the indication on which algorithm is needed to
compute checksum on skb in the transmit path, when skb->ip_summed is equal
to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c hasn't been
yet written in L4 header, skb->csum_not_inet is assigned to 1; otherwise,
assume Internet Checksum is needed and thus set skb->csum_not_inet to 0.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h | 16 +++++++++-------
 net/core/dev.c         |  1 +
 net/sched/act_csum.c   |  1 +
 net/sctp/offload.c     |  1 +
 net/sctp/output.c      |  1 +
 5 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 927309e..419f4c8 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -189,12 +189,13 @@
  *
  *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
  *     offloading the SCTP CRC in a packet. To perform this offload the stack
- *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
- *     accordingly. Note the there is no indication in the skbuff that the
- *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
- *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers; in
- *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
+ *     will set set csum_start and csum_offset accordingly, set ip_summed to
+ *     CHECKSUM_PARTIAL and set csum_not_inet to 1, to provide an indication in
+ *     the skbuff that the CHECKSUM_PARTIAL refers to CRC32c.
+ *     A driver that supports both IP checksum offload and SCTP CRC32c offload
+ *     must verify which offload is configured for a packet by testing the
+ *     value of skb->csum_not_inet; skb_crc32c_csum_help is provided to resolve
+ *     CHECKSUM_PARTIAL on skbs where csum_not_inet is set to 1.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
@@ -615,6 +616,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,
  *	@wifi_acked_valid: wifi_acked was set
  *	@wifi_acked: whether frame was acked on wifi or not
  *	@no_fcs:  Request NIC to treat last 4 bytes as Ethernet FCS
+ *	@csum_not_inet: use CRC32c to resolve CHECKSUM_PARTIAL
  *	@dst_pending_confirm: need to confirm neighbour
   *	@napi_id: id of the NAPI struct this skb came from
  *	@secmark: security marking
@@ -743,7 +745,7 @@ struct sk_buff {
 	__u8			csum_valid:1;
 	__u8			csum_complete_sw:1;
 	__u8			csum_level:2;
-	__u8			__csum_bad_unused:1; /* one bit hole */
+	__u8			csum_not_inet:1;
 
 	__u8			dst_pending_confirm:1;
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
diff --git a/net/core/dev.c b/net/core/dev.c
index 77a2d73..9f56f87 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2642,6 +2642,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb)
 	}
 	*(__le32 *)(skb->data + offset) = crc32c_csum;
 	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_not_inet = 0;
 out:
 	return ret;
 }
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index ab6fdbd..3317a2f 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -350,6 +350,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
 	sctph->checksum = sctp_compute_cksum(skb,
 					     skb_network_offset(skb) + ihl);
 	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_not_inet = 0;
 
 	return 1;
 }
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 378f462..ef156ac 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -35,6 +35,7 @@
 static __le32 sctp_gso_make_checksum(struct sk_buff *skb)
 {
 	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_not_inet = 0;
 	return sctp_compute_cksum(skb, skb_transport_offset(skb));
 }
 
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 1409a87..e2edf2e 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -538,6 +538,7 @@ static int sctp_packet_pack(struct sctp_packet *packet,
 	} else {
 chksum:
 		head->ip_summed = CHECKSUM_PARTIAL;
+		head->csum_not_inet = 1;
 		head->csum_start = skb_transport_header(head) - head->head;
 		head->csum_offset = offsetof(struct sctphdr, checksum);
 	}
-- 
2.7.4

Re: [PATCH RFC net-next v4 4/7] net: use skb->csum_not_inet to identify packets needing crc32c

[Tom Herbert]

On Thu, Apr 20, 2017 at 6:38 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> skb->csum_not_inet carries the indication on which algorithm is needed to
> compute checksum on skb in the transmit path, when skb->ip_summed is equal
> to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c hasn't been
> yet written in L4 header, skb->csum_not_inet is assigned to 1; otherwise,
> assume Internet Checksum is needed and thus set skb->csum_not_inet to 0.
>
> Suggested-by: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h | 16 +++++++++-------
>  net/core/dev.c         |  1 +
>  net/sched/act_csum.c   |  1 +
>  net/sctp/offload.c     |  1 +
>  net/sctp/output.c      |  1 +
>  5 files changed, 13 insertions(+), 7 deletions(-)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 927309e..419f4c8 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -189,12 +189,13 @@
>   *
>   *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
>   *     offloading the SCTP CRC in a packet. To perform this offload the stack
> - *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
> - *     accordingly. Note the there is no indication in the skbuff that the
> - *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
> - *     both IP checksum offload and SCTP CRC offload must verify which offload
> - *     is configured for a packet presumably by inspecting packet headers; in
> - *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
> + *     will set set csum_start and csum_offset accordingly, set ip_summed to
> + *     CHECKSUM_PARTIAL and set csum_not_inet to 1, to provide an indication in
> + *     the skbuff that the CHECKSUM_PARTIAL refers to CRC32c.
> + *     A driver that supports both IP checksum offload and SCTP CRC32c offload
> + *     must verify which offload is configured for a packet by testing the
> + *     value of skb->csum_not_inet; skb_crc32c_csum_help is provided to resolve
> + *     CHECKSUM_PARTIAL on skbs where csum_not_inet is set to 1.
>   *
>   *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
>   *     offloading the FCOE CRC in a packet. To perform this offload the stack
> @@ -615,6 +616,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,
>   *     @wifi_acked_valid: wifi_acked was set
>   *     @wifi_acked: whether frame was acked on wifi or not
>   *     @no_fcs:  Request NIC to treat last 4 bytes as Ethernet FCS
> + *     @csum_not_inet: use CRC32c to resolve CHECKSUM_PARTIAL
>   *     @dst_pending_confirm: need to confirm neighbour
>    *    @napi_id: id of the NAPI struct this skb came from
>   *     @secmark: security marking
> @@ -743,7 +745,7 @@ struct sk_buff {
>         __u8                    csum_valid:1;
>         __u8                    csum_complete_sw:1;
>         __u8                    csum_level:2;
> -       __u8                    __csum_bad_unused:1; /* one bit hole */
> +       __u8                    csum_not_inet:1;
>
>         __u8                    dst_pending_confirm:1;
>  #ifdef CONFIG_IPV6_NDISC_NODETYPE
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 77a2d73..9f56f87 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2642,6 +2642,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb)
>         }
>         *(__le32 *)(skb->data + offset) = crc32c_csum;
>         skb->ip_summed = CHECKSUM_NONE;
> +       skb->csum_not_inet = 0;
>  out:
>         return ret;
>  }
> diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
> index ab6fdbd..3317a2f 100644
> --- a/net/sched/act_csum.c
> +++ b/net/sched/act_csum.c
> @@ -350,6 +350,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
>         sctph->checksum = sctp_compute_cksum(skb,
>                                              skb_network_offset(skb) + ihl);
>         skb->ip_summed = CHECKSUM_NONE;
> +       skb->csum_not_inet = 0;
>
>         return 1;
>  }
> diff --git a/net/sctp/offload.c b/net/sctp/offload.c
> index 378f462..ef156ac 100644
> --- a/net/sctp/offload.c
> +++ b/net/sctp/offload.c
> @@ -35,6 +35,7 @@
>  static __le32 sctp_gso_make_checksum(struct sk_buff *skb)
>  {
>         skb->ip_summed = CHECKSUM_NONE;
> +       skb->csum_not_inet = 0;
>         return sctp_compute_cksum(skb, skb_transport_offset(skb));
>  }
>
> diff --git a/net/sctp/output.c b/net/sctp/output.c
> index 1409a87..e2edf2e 100644
> --- a/net/sctp/output.c
> +++ b/net/sctp/output.c
> @@ -538,6 +538,7 @@ static int sctp_packet_pack(struct sctp_packet *packet,
>         } else {
>  chksum:
>                 head->ip_summed = CHECKSUM_PARTIAL;
> +               head->csum_not_inet = 1;
>                 head->csum_start = skb_transport_header(head) - head->head;
>                 head->csum_offset = offsetof(struct sctphdr, checksum);
>         }
> --
> 2.7.4
>
Looks great!

Acked-by: Tom Herbert <tom@herbertland.com>

Re: [PATCH RFC net-next v4 4/7] net: use skb->csum_not_inet to identify packets needing crc32c

[Tom Herbert]

On Thu, Apr 20, 2017 at 6:38 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> skb->csum_not_inet carries the indication on which algorithm is needed to
> compute checksum on skb in the transmit path, when skb->ip_summed is equal
> to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c hasn't been
> yet written in L4 header, skb->csum_not_inet is assigned to 1; otherwise,
> assume Internet Checksum is needed and thus set skb->csum_not_inet to 0.
>
> Suggested-by: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h | 16 +++++++++-------
>  net/core/dev.c         |  1 +
>  net/sched/act_csum.c   |  1 +
>  net/sctp/offload.c     |  1 +
>  net/sctp/output.c      |  1 +
>  5 files changed, 13 insertions(+), 7 deletions(-)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 927309e..419f4c8 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -189,12 +189,13 @@
>   *
>   *   NETIF_F_SCTP_CRC - This feature indicates that a device is capable of
>   *     offloading the SCTP CRC in a packet. To perform this offload the stack
> - *     will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset
> - *     accordingly. Note the there is no indication in the skbuff that the
> - *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
> - *     both IP checksum offload and SCTP CRC offload must verify which offload
> - *     is configured for a packet presumably by inspecting packet headers; in
> - *     case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets.
> + *     will set set csum_start and csum_offset accordingly, set ip_summed to
> + *     CHECKSUM_PARTIAL and set csum_not_inet to 1, to provide an indication in
> + *     the skbuff that the CHECKSUM_PARTIAL refers to CRC32c.
> + *     A driver that supports both IP checksum offload and SCTP CRC32c offload
> + *     must verify which offload is configured for a packet by testing the
> + *     value of skb->csum_not_inet; skb_crc32c_csum_help is provided to resolve
> + *     CHECKSUM_PARTIAL on skbs where csum_not_inet is set to 1.
>   *
>   *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
>   *     offloading the FCOE CRC in a packet. To perform this offload the stack
> @@ -615,6 +616,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,
>   *     @wifi_acked_valid: wifi_acked was set
>   *     @wifi_acked: whether frame was acked on wifi or not
>   *     @no_fcs:  Request NIC to treat last 4 bytes as Ethernet FCS
> + *     @csum_not_inet: use CRC32c to resolve CHECKSUM_PARTIAL
>   *     @dst_pending_confirm: need to confirm neighbour
>    *    @napi_id: id of the NAPI struct this skb came from
>   *     @secmark: security marking
> @@ -743,7 +745,7 @@ struct sk_buff {
>         __u8                    csum_valid:1;
>         __u8                    csum_complete_sw:1;
>         __u8                    csum_level:2;
> -       __u8                    __csum_bad_unused:1; /* one bit hole */
> +       __u8                    csum_not_inet:1;
>
>         __u8                    dst_pending_confirm:1;
>  #ifdef CONFIG_IPV6_NDISC_NODETYPE
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 77a2d73..9f56f87 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2642,6 +2642,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb)
>         }
>         *(__le32 *)(skb->data + offset) = crc32c_csum;
>         skb->ip_summed = CHECKSUM_NONE;
> +       skb->csum_not_inet = 0;
>  out:
>         return ret;
>  }
> diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
> index ab6fdbd..3317a2f 100644
> --- a/net/sched/act_csum.c
> +++ b/net/sched/act_csum.c
> @@ -350,6 +350,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl,
>         sctph->checksum = sctp_compute_cksum(skb,
>                                              skb_network_offset(skb) + ihl);
>         skb->ip_summed = CHECKSUM_NONE;
> +       skb->csum_not_inet = 0;
>
>         return 1;
>  }
> diff --git a/net/sctp/offload.c b/net/sctp/offload.c
> index 378f462..ef156ac 100644
> --- a/net/sctp/offload.c
> +++ b/net/sctp/offload.c
> @@ -35,6 +35,7 @@
>  static __le32 sctp_gso_make_checksum(struct sk_buff *skb)
>  {
>         skb->ip_summed = CHECKSUM_NONE;
> +       skb->csum_not_inet = 0;
>         return sctp_compute_cksum(skb, skb_transport_offset(skb));
>  }
>
> diff --git a/net/sctp/output.c b/net/sctp/output.c
> index 1409a87..e2edf2e 100644
> --- a/net/sctp/output.c
> +++ b/net/sctp/output.c
> @@ -538,6 +538,7 @@ static int sctp_packet_pack(struct sctp_packet *packet,
>         } else {
>  chksum:
>                 head->ip_summed = CHECKSUM_PARTIAL;
> +               head->csum_not_inet = 1;
>                 head->csum_start = skb_transport_header(head) - head->head;
>                 head->csum_offset = offsetof(struct sctphdr, checksum);
>         }
> --
> 2.7.4
>
Looks great!

Acked-by: Tom Herbert <tom@herbertland.com>

[PATCH RFC net-next v4 5/7] net: more accurate checksumming in validate_xmit_skb()

[Davide Caratti]

skb_csum_hwoffload_help() uses netdev features and skb->csum_not_inet to
determine if skb needs software computation of Internet Checksum or crc32c
(or nothing, if this computation can be done by the hardware). Use it in
place of skb_checksum_help() in validate_xmit_skb() to avoid corruption
of non-GSO SCTP packets having skb->ip_summed equal to CHECKSUM_PARTIAL.

While at it, remove references to skb_csum_off_chk* functions, since they
are not present anymore in Linux since commit cf53b1da73bd ('Revert "net:
Add driver helper functions to determine checksum"').

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/networking/checksum-offloads.txt | 11 +++++++----
 include/linux/netdevice.h                      |  3 +++
 include/linux/skbuff.h                         | 13 +++++--------
 net/core/dev.c                                 | 14 ++++++++++++--
 4 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/Documentation/networking/checksum-offloads.txt b/Documentation/networking/checksum-offloads.txt
index 56e3686..d52d191 100644
--- a/Documentation/networking/checksum-offloads.txt
+++ b/Documentation/networking/checksum-offloads.txt
@@ -35,6 +35,9 @@ This interface only allows a single checksum to be offloaded.  Where
  encapsulation is used, the packet may have multiple checksum fields in
  different header layers, and the rest will have to be handled by another
  mechanism such as LCO or RCO.
+CRC32c can also be offloaded using this interface, by means of filling
+ skb->csum_start and skb->csum_offset as described above, and setting
+ skb->csum_not_inet: see skbuff.h comment (section 'D') for more details.
 No offloading of the IP header checksum is performed; it is always done in
  software.  This is OK because when we build the IP header, we obviously
  have it in cache, so summing it isn't expensive.  It's also rather short.
@@ -49,9 +52,9 @@ A driver declares its offload capabilities in netdev->hw_features; see
  and csum_offset given in the SKB; if it tries to deduce these itself in
  hardware (as some NICs do) the driver should check that the values in the
  SKB match those which the hardware will deduce, and if not, fall back to
- checksumming in software instead (with skb_checksum_help or one of the
- skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h).  This
- is a pain, but that's what you get when hardware tries to be clever.
+ checksumming in software instead (with skb_csum_hwoffload_help() or one of
+ the skb_checksum_help() / skb_crc32c_csum_help functions, as mentioned in
+ include/linux/skbuff.h).
 
 The stack should, for the most part, assume that checksum offload is
  supported by the underlying device.  The only place that should check is
@@ -60,7 +63,7 @@ The stack should, for the most part, assume that checksum offload is
  may include other offloads besides TX Checksum Offload) and, if they are
  not supported or enabled on the device (determined by netdev->features),
  performs the corresponding offload in software.  In the case of TX
- Checksum Offload, that means calling skb_checksum_help(skb).
+ Checksum Offload, that means calling skb_csum_hwoffload_help(skb, features).
 
 
 LCO: Local Checksum Offload
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ab9e3dc..45e8958 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3897,6 +3897,9 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
 int skb_crc32c_csum_help(struct sk_buff *skb);
+int skb_csum_hwoffload_help(struct sk_buff *skb,
+			    const netdev_features_t features);
+
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 419f4c8..4002c11 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -162,14 +162,11 @@
  *
  *   NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of
  *   NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate
- *   checksum offload capability. If a	device has limited checksum capabilities
- *   (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as
- *   described above) a helper function can be called to resolve
- *   CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper
- *   function takes a spec argument that describes the protocol layer that is
- *   supported for checksum offload and can be called for each packet. If a
- *   packet does not match the specification for offload, skb_checksum_help
- *   is called to resolve the checksum.
+ *   checksum offload capability.
+ *   skb_csum_hwoffload_help() can be called to resolve CHECKSUM_PARTIAL based
+ *   on network device checksumming capabilities: if a packet does not match
+ *   them, skb_checksum_help or skb_crc32c_help (depending on the value of
+ *   csum_not_inet, see item D.) is called to resolve the checksum.
  *
  * CHECKSUM_NONE:
  *
diff --git a/net/core/dev.c b/net/core/dev.c
index 9f56f87..440ace0 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2989,6 +2989,17 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+int skb_csum_hwoffload_help(struct sk_buff *skb,
+			    const netdev_features_t features)
+{
+	if (unlikely(skb->csum_not_inet))
+		return !!(features & NETIF_F_SCTP_CRC) ? 0 :
+			skb_crc32c_csum_help(skb);
+
+	return !!(features & NETIF_F_CSUM_MASK) ? 0 : skb_checksum_help(skb);
+}
+EXPORT_SYMBOL(skb_csum_hwoffload_help);
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -3024,8 +3035,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features))
 				goto out_kfree_skb;
 		}
 	}
-- 
2.7.4

[PATCH RFC net-next v4 5/7] net: more accurate checksumming in validate_xmit_skb()

[Davide Caratti]

skb_csum_hwoffload_help() uses netdev features and skb->csum_not_inet to
determine if skb needs software computation of Internet Checksum or crc32c
(or nothing, if this computation can be done by the hardware). Use it in
place of skb_checksum_help() in validate_xmit_skb() to avoid corruption
of non-GSO SCTP packets having skb->ip_summed equal to CHECKSUM_PARTIAL.

While at it, remove references to skb_csum_off_chk* functions, since they
are not present anymore in Linux since commit cf53b1da73bd ('Revert "net:
Add driver helper functions to determine checksum"').

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/networking/checksum-offloads.txt | 11 +++++++----
 include/linux/netdevice.h                      |  3 +++
 include/linux/skbuff.h                         | 13 +++++--------
 net/core/dev.c                                 | 14 ++++++++++++--
 4 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/Documentation/networking/checksum-offloads.txt b/Documentation/networking/checksum-offloads.txt
index 56e3686..d52d191 100644
--- a/Documentation/networking/checksum-offloads.txt
+++ b/Documentation/networking/checksum-offloads.txt
@@ -35,6 +35,9 @@ This interface only allows a single checksum to be offloaded.  Where
  encapsulation is used, the packet may have multiple checksum fields in
  different header layers, and the rest will have to be handled by another
  mechanism such as LCO or RCO.
+CRC32c can also be offloaded using this interface, by means of filling
+ skb->csum_start and skb->csum_offset as described above, and setting
+ skb->csum_not_inet: see skbuff.h comment (section 'D') for more details.
 No offloading of the IP header checksum is performed; it is always done in
  software.  This is OK because when we build the IP header, we obviously
  have it in cache, so summing it isn't expensive.  It's also rather short.
@@ -49,9 +52,9 @@ A driver declares its offload capabilities in netdev->hw_features; see
  and csum_offset given in the SKB; if it tries to deduce these itself in
  hardware (as some NICs do) the driver should check that the values in the
  SKB match those which the hardware will deduce, and if not, fall back to
- checksumming in software instead (with skb_checksum_help or one of the
- skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h).  This
- is a pain, but that's what you get when hardware tries to be clever.
+ checksumming in software instead (with skb_csum_hwoffload_help() or one of
+ the skb_checksum_help() / skb_crc32c_csum_help functions, as mentioned in
+ include/linux/skbuff.h).
 
 The stack should, for the most part, assume that checksum offload is
  supported by the underlying device.  The only place that should check is
@@ -60,7 +63,7 @@ The stack should, for the most part, assume that checksum offload is
  may include other offloads besides TX Checksum Offload) and, if they are
  not supported or enabled on the device (determined by netdev->features),
  performs the corresponding offload in software.  In the case of TX
- Checksum Offload, that means calling skb_checksum_help(skb).
+ Checksum Offload, that means calling skb_csum_hwoffload_help(skb, features).
 
 
 LCO: Local Checksum Offload
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ab9e3dc..45e8958 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3897,6 +3897,9 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
 int skb_crc32c_csum_help(struct sk_buff *skb);
+int skb_csum_hwoffload_help(struct sk_buff *skb,
+			    const netdev_features_t features);
+
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 419f4c8..4002c11 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -162,14 +162,11 @@
  *
  *   NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of
  *   NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate
- *   checksum offload capability. If a	device has limited checksum capabilities
- *   (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as
- *   described above) a helper function can be called to resolve
- *   CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper
- *   function takes a spec argument that describes the protocol layer that is
- *   supported for checksum offload and can be called for each packet. If a
- *   packet does not match the specification for offload, skb_checksum_help
- *   is called to resolve the checksum.
+ *   checksum offload capability.
+ *   skb_csum_hwoffload_help() can be called to resolve CHECKSUM_PARTIAL based
+ *   on network device checksumming capabilities: if a packet does not match
+ *   them, skb_checksum_help or skb_crc32c_help (depending on the value of
+ *   csum_not_inet, see item D.) is called to resolve the checksum.
  *
  * CHECKSUM_NONE:
  *
diff --git a/net/core/dev.c b/net/core/dev.c
index 9f56f87..440ace0 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2989,6 +2989,17 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+int skb_csum_hwoffload_help(struct sk_buff *skb,
+			    const netdev_features_t features)
+{
+	if (unlikely(skb->csum_not_inet))
+		return !!(features & NETIF_F_SCTP_CRC) ? 0 :
+			skb_crc32c_csum_help(skb);
+
+	return !!(features & NETIF_F_CSUM_MASK) ? 0 : skb_checksum_help(skb);
+}
+EXPORT_SYMBOL(skb_csum_hwoffload_help);
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -3024,8 +3035,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features))
 				goto out_kfree_skb;
 		}
 	}
-- 
2.7.4

[PATCH RFC net-next v4 6/7] openvswitch: more accurate checksumming in queue_userspace_packet()

[Davide Caratti]

if skb carries an SCTP packet and ip_summed is CHECKSUM_PARTIAL, it needs
CRC32c in place of Internet Checksum: use skb_csum_hwoffload_help to avoid
corrupting such packets while queueing them towards userspace.

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/openvswitch/datapath.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 7b17da9..9ddc9f8 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -453,7 +453,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
 
 	/* Complete checksum if needed */
 	if (skb->ip_summed == CHECKSUM_PARTIAL &&
-	    (err = skb_checksum_help(skb)))
+	    (err = skb_csum_hwoffload_help(skb, 0)))
 		goto out;
 
 	/* Older versions of OVS user space enforce alignment of the last
-- 
2.7.4

[PATCH RFC net-next v4 6/7] openvswitch: more accurate checksumming in queue_userspace_packet()

[Davide Caratti]

if skb carries an SCTP packet and ip_summed is CHECKSUM_PARTIAL, it needs
CRC32c in place of Internet Checksum: use skb_csum_hwoffload_help to avoid
corrupting such packets while queueing them towards userspace.

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/openvswitch/datapath.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 7b17da9..9ddc9f8 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -453,7 +453,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
 
 	/* Complete checksum if needed */
 	if (skb->ip_summed = CHECKSUM_PARTIAL &&
-	    (err = skb_checksum_help(skb)))
+	    (err = skb_csum_hwoffload_help(skb, 0)))
 		goto out;
 
 	/* Older versions of OVS user space enforce alignment of the last
-- 
2.7.4

[PATCH RFC net-next v4 7/7] sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

[Davide Caratti]

Add FCoE to the list of protocols that can set CHECKSUM_UNNECESSARY; add a
note to CHECKSUM_COMPLETE section to specify that it does not apply to SCTP
and FCoE protocols.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4002c11..c902b77 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -109,6 +109,7 @@
  *       may perform further validation in this case.
  *     GRE: only if the checksum is present in the header.
  *     SCTP: indicates the CRC in SCTP header has been validated.
+ *     FCOE: indicates the CRC in FC frame has been validated.
  *
  *   skb->csum_level indicates the number of consecutive checksums found in
  *   the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
@@ -126,8 +127,10 @@
  *   packet as seen by netif_rx() and fills out in skb->csum. Meaning, the
  *   hardware doesn't need to parse L3/L4 headers to implement this.
  *
- *   Note: Even if device supports only some protocols, but is able to produce
- *   skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
+ *   Notes:
+ *   - Even if device supports only some protocols, but is able to produce
+ *     skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
+ *   - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols.
  *
  * CHECKSUM_PARTIAL:
  *
-- 
2.7.4

[PATCH RFC net-next v4 7/7] sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

[Davide Caratti]

Add FCoE to the list of protocols that can set CHECKSUM_UNNECESSARY; add a
note to CHECKSUM_COMPLETE section to specify that it does not apply to SCTP
and FCoE protocols.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4002c11..c902b77 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -109,6 +109,7 @@
  *       may perform further validation in this case.
  *     GRE: only if the checksum is present in the header.
  *     SCTP: indicates the CRC in SCTP header has been validated.
+ *     FCOE: indicates the CRC in FC frame has been validated.
  *
  *   skb->csum_level indicates the number of consecutive checksums found in
  *   the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
@@ -126,8 +127,10 @@
  *   packet as seen by netif_rx() and fills out in skb->csum. Meaning, the
  *   hardware doesn't need to parse L3/L4 headers to implement this.
  *
- *   Note: Even if device supports only some protocols, but is able to produce
- *   skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
+ *   Notes:
+ *   - Even if device supports only some protocols, but is able to produce
+ *     skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
+ *   - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols.
  *
  * CHECKSUM_PARTIAL:
  *
-- 
2.7.4

Re: [PATCH RFC net-next v4 7/7] sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

[Tom Herbert]

On Thu, Apr 20, 2017 at 6:38 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> Add FCoE to the list of protocols that can set CHECKSUM_UNNECESSARY; add a
> note to CHECKSUM_COMPLETE section to specify that it does not apply to SCTP
> and FCoE protocols.
>
> Suggested-by: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 4002c11..c902b77 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -109,6 +109,7 @@
>   *       may perform further validation in this case.
>   *     GRE: only if the checksum is present in the header.
>   *     SCTP: indicates the CRC in SCTP header has been validated.
> + *     FCOE: indicates the CRC in FC frame has been validated.
>   *
>   *   skb->csum_level indicates the number of consecutive checksums found in
>   *   the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
> @@ -126,8 +127,10 @@
>   *   packet as seen by netif_rx() and fills out in skb->csum. Meaning, the
>   *   hardware doesn't need to parse L3/L4 headers to implement this.
>   *
> - *   Note: Even if device supports only some protocols, but is able to produce
> - *   skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
> + *   Notes:
> + *   - Even if device supports only some protocols, but is able to produce
> + *     skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
> + *   - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols.
>   *
>   * CHECKSUM_PARTIAL:
>   *
> --
> 2.7.4
>

Acked-by: Tom Herbert <tom@herbertland.com>

Re: [PATCH RFC net-next v4 7/7] sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

[Tom Herbert]

On Thu, Apr 20, 2017 at 6:38 AM, Davide Caratti <dcaratti@redhat.com> wrote:
> Add FCoE to the list of protocols that can set CHECKSUM_UNNECESSARY; add a
> note to CHECKSUM_COMPLETE section to specify that it does not apply to SCTP
> and FCoE protocols.
>
> Suggested-by: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Davide Caratti <dcaratti@redhat.com>
> ---
>  include/linux/skbuff.h | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 4002c11..c902b77 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -109,6 +109,7 @@
>   *       may perform further validation in this case.
>   *     GRE: only if the checksum is present in the header.
>   *     SCTP: indicates the CRC in SCTP header has been validated.
> + *     FCOE: indicates the CRC in FC frame has been validated.
>   *
>   *   skb->csum_level indicates the number of consecutive checksums found in
>   *   the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
> @@ -126,8 +127,10 @@
>   *   packet as seen by netif_rx() and fills out in skb->csum. Meaning, the
>   *   hardware doesn't need to parse L3/L4 headers to implement this.
>   *
> - *   Note: Even if device supports only some protocols, but is able to produce
> - *   skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
> + *   Notes:
> + *   - Even if device supports only some protocols, but is able to produce
> + *     skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
> + *   - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols.
>   *
>   * CHECKSUM_PARTIAL:
>   *
> --
> 2.7.4
>

Acked-by: Tom Herbert <tom@herbertland.com>

Re: [PATCH RFC net-next v4 0/7] net: improve support for SCTP checksums

[Marcelo Ricardo Leitner]

On Thu, Apr 20, 2017 at 03:38:06PM +0200, Davide Caratti wrote:
> hello Tom,
> 
> On Fri, 2017-04-07 at 11:11 -0700, Tom Herbert wrote:
> > maybe just call it csum_not_ip then. Then just do "if
> > (unlikely(skb->csum_not_ip)) ..."
> 
> Ok, done. V4 uses this bit for SCTP only and leaves unmodified behavior
> when offloaded FCoE frames are processed. Further work is still possible
> to extend this fix for FCoE, if needed, either by using additional sk_buff
> bits, or using skb->csum_not_ip and use other data (e.g. skb->csum_offset)
> to distinguish SCTP from FCoE.
> 
> > the only case where this new bit is relevant is when
> > CHECKSUM_PARTIAL for a CRC is being done. When it's set for offloading
> > sctp crc it must be set. When CRC is resolved, in the helper for
> > instance, it must be cleared.
> 
> in V4 the bit is set when SCTP packets with offloaded checksum are
> generated; the bit is cleared when CRC32c is resolved for such packets
> (i.e. skb->ip_summed transitions from CHECKSUM_PARTIAL to CHECKSUM_NONE).
> 
> Any feedbacks are appreciated!
> thank you in advance,
> --
> davide
> 
> 
> Davide Caratti (7):
>   skbuff: add stub to help computing crc32c on SCTP packets
>   net: introduce skb_crc32c_csum_help
>   sk_buff: remove support for csum_bad in sk_buff
>   net: use skb->csum_not_inet to identify packets needing crc32c
>   net: more accurate checksumming in validate_xmit_skb()
>   openvswitch: more accurate checksumming in queue_userspace_packet()
>   sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

Other than the comments I did on patch 2, this series LGTM.


> 
>  Documentation/networking/checksum-offloads.txt   | 11 +++--
>  drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
>  include/linux/netdevice.h                        |  8 +--
>  include/linux/skbuff.h                           | 58 +++++++++-------------
>  net/bridge/netfilter/nft_reject_bridge.c         |  5 +-
>  net/core/dev.c                                   | 63 +++++++++++++++++++++---
>  net/core/skbuff.c                                | 24 +++++++++
>  net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
>  net/ipv6/netfilter/nf_reject_ipv6.c              |  3 --
>  net/openvswitch/datapath.c                       |  2 +-
>  net/sched/act_csum.c                             |  1 +
>  net/sctp/offload.c                               |  8 +++
>  net/sctp/output.c                                |  1 +
>  13 files changed, 128 insertions(+), 60 deletions(-)
> 
> -- 
> 2.7.4
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-sctp" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: [PATCH RFC net-next v4 0/7] net: improve support for SCTP checksums

[Marcelo Ricardo Leitner]

On Thu, Apr 20, 2017 at 03:38:06PM +0200, Davide Caratti wrote:
> hello Tom,
> 
> On Fri, 2017-04-07 at 11:11 -0700, Tom Herbert wrote:
> > maybe just call it csum_not_ip then. Then just do "if
> > (unlikely(skb->csum_not_ip)) ..."
> 
> Ok, done. V4 uses this bit for SCTP only and leaves unmodified behavior
> when offloaded FCoE frames are processed. Further work is still possible
> to extend this fix for FCoE, if needed, either by using additional sk_buff
> bits, or using skb->csum_not_ip and use other data (e.g. skb->csum_offset)
> to distinguish SCTP from FCoE.
> 
> > the only case where this new bit is relevant is when
> > CHECKSUM_PARTIAL for a CRC is being done. When it's set for offloading
> > sctp crc it must be set. When CRC is resolved, in the helper for
> > instance, it must be cleared.
> 
> in V4 the bit is set when SCTP packets with offloaded checksum are
> generated; the bit is cleared when CRC32c is resolved for such packets
> (i.e. skb->ip_summed transitions from CHECKSUM_PARTIAL to CHECKSUM_NONE).
> 
> Any feedbacks are appreciated!
> thank you in advance,
> --
> davide
> 
> 
> Davide Caratti (7):
>   skbuff: add stub to help computing crc32c on SCTP packets
>   net: introduce skb_crc32c_csum_help
>   sk_buff: remove support for csum_bad in sk_buff
>   net: use skb->csum_not_inet to identify packets needing crc32c
>   net: more accurate checksumming in validate_xmit_skb()
>   openvswitch: more accurate checksumming in queue_userspace_packet()
>   sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

Other than the comments I did on patch 2, this series LGTM.


> 
>  Documentation/networking/checksum-offloads.txt   | 11 +++--
>  drivers/net/ethernet/aquantia/atlantic/aq_ring.c |  2 +-
>  include/linux/netdevice.h                        |  8 +--
>  include/linux/skbuff.h                           | 58 +++++++++-------------
>  net/bridge/netfilter/nft_reject_bridge.c         |  5 +-
>  net/core/dev.c                                   | 63 +++++++++++++++++++++---
>  net/core/skbuff.c                                | 24 +++++++++
>  net/ipv4/netfilter/nf_reject_ipv4.c              |  2 +-
>  net/ipv6/netfilter/nf_reject_ipv6.c              |  3 --
>  net/openvswitch/datapath.c                       |  2 +-
>  net/sched/act_csum.c                             |  1 +
>  net/sctp/offload.c                               |  8 +++
>  net/sctp/output.c                                |  1 +
>  13 files changed, 128 insertions(+), 60 deletions(-)
> 
> -- 
> 2.7.4
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-sctp" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

[PATCH RFC net-next v3 5/7] net: more accurate checksumming in validate_xmit_skb()

[Davide Caratti]

skb_csum_hwoffload_help() uses netdev features and skb->csum_algo to
determine if skb needs software computation of Internet Checksum or crc32c
(or nothing, if this computation can be done by the hardware). Use it in
place of skb_checksum_help() in validate_xmit_skb() to avoid corruption
of non-GSO SCTP packets having skb->ip_summed equal to CHECKSUM_PARTIAL.

While at it, remove references to skb_csum_off_chk* functions, since they
are not present anymore in Linux since commit cf53b1da73bd ('Revert "net:
Add driver helper functions to determine checksum"').

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/networking/checksum-offloads.txt | 12 ++++++++----
 include/linux/netdevice.h                      |  3 +++
 include/linux/skbuff.h                         | 11 ++++-------
 net/core/dev.c                                 | 14 ++++++++++++--
 4 files changed, 27 insertions(+), 13 deletions(-)

diff --git a/Documentation/networking/checksum-offloads.txt b/Documentation/networking/checksum-offloads.txt
index 56e3686..95a49aa 100644
--- a/Documentation/networking/checksum-offloads.txt
+++ b/Documentation/networking/checksum-offloads.txt
@@ -35,6 +35,10 @@ This interface only allows a single checksum to be offloaded.  Where
  encapsulation is used, the packet may have multiple checksum fields in
  different header layers, and the rest will have to be handled by another
  mechanism such as LCO or RCO.
+CRC can also be offloaded using this interface, by means of filling
+ skb->csum_start and skb->csum_offset as described above, and setting
+ skb->csum_algo to values different than INTERNET_CHECKSUM: see skbuff.h
+ comment (section 'D') for more details.
 No offloading of the IP header checksum is performed; it is always done in
  software.  This is OK because when we build the IP header, we obviously
  have it in cache, so summing it isn't expensive.  It's also rather short.
@@ -49,9 +53,9 @@ A driver declares its offload capabilities in netdev->hw_features; see
  and csum_offset given in the SKB; if it tries to deduce these itself in
  hardware (as some NICs do) the driver should check that the values in the
  SKB match those which the hardware will deduce, and if not, fall back to
- checksumming in software instead (with skb_checksum_help or one of the
- skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h).  This
- is a pain, but that's what you get when hardware tries to be clever.
+ checksumming in software instead (with skb_csum_hwoffload_help() or one of
+ the skb_checksum_help() / skb_crc32c_csum_help functions, as mentioned in
+ include/linux/skbuff.h).
 
 The stack should, for the most part, assume that checksum offload is
  supported by the underlying device.  The only place that should check is
@@ -60,7 +64,7 @@ The stack should, for the most part, assume that checksum offload is
  may include other offloads besides TX Checksum Offload) and, if they are
  not supported or enabled on the device (determined by netdev->features),
  performs the corresponding offload in software.  In the case of TX
- Checksum Offload, that means calling skb_checksum_help(skb).
+ Checksum Offload, that means calling skb_csum_hwoffload_help(skb, features).
 
 
 LCO: Local Checksum Offload
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 960f6ab..e4ceb36 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3898,6 +3898,9 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
 int skb_crc32c_csum_help(struct sk_buff *skb);
+int skb_csum_hwoffload_help(struct sk_buff *skb,
+			    const netdev_features_t features);
+
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 527be47..4d2a6ec 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -162,13 +162,10 @@
  *
  *   NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of
  *   NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate
- *   checksum offload capability. If a	device has limited checksum capabilities
- *   (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as
- *   described above) a helper function can be called to resolve
- *   CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper
- *   function takes a spec argument that describes the protocol layer that is
- *   supported for checksum offload and can be called for each packet. If a
- *   packet does not match the specification for offload, skb_checksum_help
+ *   checksum offload capability.
+ *   skb_csum_hwoffload_help() can be called to resolve CHECKSUM_PARTIAL based
+ *   on network device checksumming capabilities: if a packet does not match
+ *   them, skb_checksum_help/skb_crc32c_help (based on csum_algo, see item D.)
  *   is called to resolve the checksum.
  *
  * CHECKSUM_NONE:
diff --git a/net/core/dev.c b/net/core/dev.c
index c6a4281..223aa16 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2988,6 +2988,17 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+int skb_csum_hwoffload_help(struct sk_buff *skb,
+			    const netdev_features_t features)
+{
+	if (skb->csum_algo == CRC32C_CHECKSUM)
+		return !!(features & NETIF_F_SCTP_CRC) ? 0 :
+			skb_crc32c_csum_help(skb);
+
+	return !!(features & NETIF_F_CSUM_MASK) ? 0 : skb_checksum_help(skb);
+}
+EXPORT_SYMBOL(skb_csum_hwoffload_help);
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -3023,8 +3034,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features))
 				goto out_kfree_skb;
 		}
 	}
-- 
2.7.4

[PATCH RFC net-next v3 5/7] net: more accurate checksumming in validate_xmit_skb()

[Davide Caratti]

skb_csum_hwoffload_help() uses netdev features and skb->csum_algo to
determine if skb needs software computation of Internet Checksum or crc32c
(or nothing, if this computation can be done by the hardware). Use it in
place of skb_checksum_help() in validate_xmit_skb() to avoid corruption
of non-GSO SCTP packets having skb->ip_summed equal to CHECKSUM_PARTIAL.

While at it, remove references to skb_csum_off_chk* functions, since they
are not present anymore in Linux since commit cf53b1da73bd ('Revert "net:
Add driver helper functions to determine checksum"').

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/networking/checksum-offloads.txt | 12 ++++++++----
 include/linux/netdevice.h                      |  3 +++
 include/linux/skbuff.h                         | 11 ++++-------
 net/core/dev.c                                 | 14 ++++++++++++--
 4 files changed, 27 insertions(+), 13 deletions(-)

diff --git a/Documentation/networking/checksum-offloads.txt b/Documentation/networking/checksum-offloads.txt
index 56e3686..95a49aa 100644
--- a/Documentation/networking/checksum-offloads.txt
+++ b/Documentation/networking/checksum-offloads.txt
@@ -35,6 +35,10 @@ This interface only allows a single checksum to be offloaded.  Where
  encapsulation is used, the packet may have multiple checksum fields in
  different header layers, and the rest will have to be handled by another
  mechanism such as LCO or RCO.
+CRC can also be offloaded using this interface, by means of filling
+ skb->csum_start and skb->csum_offset as described above, and setting
+ skb->csum_algo to values different than INTERNET_CHECKSUM: see skbuff.h
+ comment (section 'D') for more details.
 No offloading of the IP header checksum is performed; it is always done in
  software.  This is OK because when we build the IP header, we obviously
  have it in cache, so summing it isn't expensive.  It's also rather short.
@@ -49,9 +53,9 @@ A driver declares its offload capabilities in netdev->hw_features; see
  and csum_offset given in the SKB; if it tries to deduce these itself in
  hardware (as some NICs do) the driver should check that the values in the
  SKB match those which the hardware will deduce, and if not, fall back to
- checksumming in software instead (with skb_checksum_help or one of the
- skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h).  This
- is a pain, but that's what you get when hardware tries to be clever.
+ checksumming in software instead (with skb_csum_hwoffload_help() or one of
+ the skb_checksum_help() / skb_crc32c_csum_help functions, as mentioned in
+ include/linux/skbuff.h).
 
 The stack should, for the most part, assume that checksum offload is
  supported by the underlying device.  The only place that should check is
@@ -60,7 +64,7 @@ The stack should, for the most part, assume that checksum offload is
  may include other offloads besides TX Checksum Offload) and, if they are
  not supported or enabled on the device (determined by netdev->features),
  performs the corresponding offload in software.  In the case of TX
- Checksum Offload, that means calling skb_checksum_help(skb).
+ Checksum Offload, that means calling skb_csum_hwoffload_help(skb, features).
 
 
 LCO: Local Checksum Offload
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 960f6ab..e4ceb36 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3898,6 +3898,9 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
 int skb_crc32c_csum_help(struct sk_buff *skb);
+int skb_csum_hwoffload_help(struct sk_buff *skb,
+			    const netdev_features_t features);
+
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 527be47..4d2a6ec 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -162,13 +162,10 @@
  *
  *   NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of
  *   NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate
- *   checksum offload capability. If a	device has limited checksum capabilities
- *   (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as
- *   described above) a helper function can be called to resolve
- *   CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper
- *   function takes a spec argument that describes the protocol layer that is
- *   supported for checksum offload and can be called for each packet. If a
- *   packet does not match the specification for offload, skb_checksum_help
+ *   checksum offload capability.
+ *   skb_csum_hwoffload_help() can be called to resolve CHECKSUM_PARTIAL based
+ *   on network device checksumming capabilities: if a packet does not match
+ *   them, skb_checksum_help/skb_crc32c_help (based on csum_algo, see item D.)
  *   is called to resolve the checksum.
  *
  * CHECKSUM_NONE:
diff --git a/net/core/dev.c b/net/core/dev.c
index c6a4281..223aa16 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2988,6 +2988,17 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+int skb_csum_hwoffload_help(struct sk_buff *skb,
+			    const netdev_features_t features)
+{
+	if (skb->csum_algo = CRC32C_CHECKSUM)
+		return !!(features & NETIF_F_SCTP_CRC) ? 0 :
+			skb_crc32c_csum_help(skb);
+
+	return !!(features & NETIF_F_CSUM_MASK) ? 0 : skb_checksum_help(skb);
+}
+EXPORT_SYMBOL(skb_csum_hwoffload_help);
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -3023,8 +3034,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features))
 				goto out_kfree_skb;
 		}
 	}
-- 
2.7.4

[PATCH RFC net-next v3 6/7] openvswitch: more accurate checksumming in queue_userspace_packet()

[Davide Caratti]

if skb carries an SCTP packet and ip_summed is CHECKSUM_PARTIAL, it needs
CRC32c in place of Internet Checksum: use skb_csum_hwoffload_help to avoid
corrupting such packets while queueing them towards userspace.

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/openvswitch/datapath.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 9c62b63..457f40d 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -453,7 +453,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
 
 	/* Complete checksum if needed */
 	if (skb->ip_summed == CHECKSUM_PARTIAL &&
-	    (err = skb_checksum_help(skb)))
+	    (err = skb_csum_hwoffload_help(skb, 0)))
 		goto out;
 
 	/* Older versions of OVS user space enforce alignment of the last
-- 
2.7.4

[PATCH RFC net-next v3 6/7] openvswitch: more accurate checksumming in queue_userspace_packet()

[Davide Caratti]

if skb carries an SCTP packet and ip_summed is CHECKSUM_PARTIAL, it needs
CRC32c in place of Internet Checksum: use skb_csum_hwoffload_help to avoid
corrupting such packets while queueing them towards userspace.

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/openvswitch/datapath.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 9c62b63..457f40d 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -453,7 +453,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
 
 	/* Complete checksum if needed */
 	if (skb->ip_summed = CHECKSUM_PARTIAL &&
-	    (err = skb_checksum_help(skb)))
+	    (err = skb_csum_hwoffload_help(skb, 0)))
 		goto out;
 
 	/* Older versions of OVS user space enforce alignment of the last
-- 
2.7.4

[PATCH RFC net-next v3 7/7] sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

[Davide Caratti]

Add FCoE to the list of protocols that can set CHECKSUM_UNNECESSARY; add a
note to CHECKSUM_COMPLETE section to specify that it does not apply to SCTP
and FCoE protocols.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4d2a6ec..1a639e8 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -109,6 +109,7 @@
  *       may perform further validation in this case.
  *     GRE: only if the checksum is present in the header.
  *     SCTP: indicates the CRC in SCTP header has been validated.
+ *     FCOE: indicates the CRC in FC frame has been validated.
  *
  *   skb->csum_level indicates the number of consecutive checksums found in
  *   the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
@@ -126,8 +127,10 @@
  *   packet as seen by netif_rx() and fills out in skb->csum. Meaning, the
  *   hardware doesn't need to parse L3/L4 headers to implement this.
  *
- *   Note: Even if device supports only some protocols, but is able to produce
- *   skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
+ *   Notes:
+ *   - Even if device supports only some protocols, but is able to produce
+ *     skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
+ *   - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols.
  *
  * CHECKSUM_PARTIAL:
  *
-- 
2.7.4

[PATCH RFC net-next v3 7/7] sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}

[Davide Caratti]

Add FCoE to the list of protocols that can set CHECKSUM_UNNECESSARY; add a
note to CHECKSUM_COMPLETE section to specify that it does not apply to SCTP
and FCoE protocols.

Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/skbuff.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4d2a6ec..1a639e8 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -109,6 +109,7 @@
  *       may perform further validation in this case.
  *     GRE: only if the checksum is present in the header.
  *     SCTP: indicates the CRC in SCTP header has been validated.
+ *     FCOE: indicates the CRC in FC frame has been validated.
  *
  *   skb->csum_level indicates the number of consecutive checksums found in
  *   the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
@@ -126,8 +127,10 @@
  *   packet as seen by netif_rx() and fills out in skb->csum. Meaning, the
  *   hardware doesn't need to parse L3/L4 headers to implement this.
  *
- *   Note: Even if device supports only some protocols, but is able to produce
- *   skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
+ *   Notes:
+ *   - Even if device supports only some protocols, but is able to produce
+ *     skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY.
+ *   - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols.
  *
  * CHECKSUM_PARTIAL:
  *
-- 
2.7.4

[RFC PATCH net-next 3/5] net: introduce skb_sctp_csum_help

[Davide Caratti]

skb_sctp_csum_help is like skb_checksum_help, but it is designed for
checksumming SCTP packets using crc32c (see RFC3309), provided that
sctp.ko has been loaded before. In case sctp.ko is not loaded, invoking
skb_sctp_csum_help() on a skb results in the following printout:

sk_buff: attempt to compute crc32c without sctp.ko

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/netdevice.h |  1 +
 include/linux/skbuff.h    |  3 ++-
 net/core/dev.c            | 29 +++++++++++++++++++++++++++++
 3 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 3868c32..9d72824 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3902,6 +3902,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
+int skb_sctp_csum_help(struct sk_buff *skb);
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 44fc804..91b4e22 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -192,7 +192,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
  *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
diff --git a/net/core/dev.c b/net/core/dev.c
index 6742160..45cee84 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2554,6 +2554,29 @@ static int skb_rfc1624_csum(struct sk_buff *skb, int offset)
 	return ret;
 }
 
+/* compute 32-bit RFC3309 checksum and store it at skb->data + offset */
+static int skb_rfc3309_csum(struct sk_buff *skb, int offset)
+{
+	__le32 crc32c_csum;
+	int ret = 0;
+
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+						  skb->len - offset, ~(__u32)0,
+						  sctp_csum_stub));
+	offset += skb->csum_offset;
+	BUG_ON((offset + sizeof(__le32)) > skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+out:
+	return ret;
+}
+
 /* Invalidate hardware checksum when packet is to be mangled, and
  * complete checksum manually on outgoing path.
  *    @skb - buffer that needs checksum
@@ -2599,6 +2622,12 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_sctp_csum_help(struct sk_buff *skb)
+{
+	return __skb_checksum_help(skb, skb_rfc3309_csum);
+}
+EXPORT_SYMBOL(skb_sctp_csum_help);
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4

[RFC PATCH net-next 3/5] net: introduce skb_sctp_csum_help

[Davide Caratti]

skb_sctp_csum_help is like skb_checksum_help, but it is designed for
checksumming SCTP packets using crc32c (see RFC3309), provided that
sctp.ko has been loaded before. In case sctp.ko is not loaded, invoking
skb_sctp_csum_help() on a skb results in the following printout:

sk_buff: attempt to compute crc32c without sctp.ko

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/linux/netdevice.h |  1 +
 include/linux/skbuff.h    |  3 ++-
 net/core/dev.c            | 29 +++++++++++++++++++++++++++++
 3 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 3868c32..9d72824 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3902,6 +3902,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);
 
 int dev_get_nest_level(struct net_device *dev);
 int skb_checksum_help(struct sk_buff *skb);
+int skb_sctp_csum_help(struct sk_buff *skb);
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 44fc804..91b4e22 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -192,7 +192,8 @@
  *     accordingly. Note the there is no indication in the skbuff that the
  *     CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports
  *     both IP checksum offload and SCTP CRC offload must verify which offload
- *     is configured for a packet presumably by inspecting packet headers.
+ *     is configured for a packet presumably by inspecting packet headers; in
+ *     case, skb_sctp_csum_help is provided to compute CRC on SCTP packets.
  *
  *   NETIF_F_FCOE_CRC - This feature indicates that a device is capable of
  *     offloading the FCOE CRC in a packet. To perform this offload the stack
diff --git a/net/core/dev.c b/net/core/dev.c
index 6742160..45cee84 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2554,6 +2554,29 @@ static int skb_rfc1624_csum(struct sk_buff *skb, int offset)
 	return ret;
 }
 
+/* compute 32-bit RFC3309 checksum and store it at skb->data + offset */
+static int skb_rfc3309_csum(struct sk_buff *skb, int offset)
+{
+	__le32 crc32c_csum;
+	int ret = 0;
+
+	crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+						  skb->len - offset, ~(__u32)0,
+						  sctp_csum_stub));
+	offset += skb->csum_offset;
+	BUG_ON((offset + sizeof(__le32)) > skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__le32))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+	*(__le32 *)(skb->data + offset) = crc32c_csum;
+out:
+	return ret;
+}
+
 /* Invalidate hardware checksum when packet is to be mangled, and
  * complete checksum manually on outgoing path.
  *    @skb - buffer that needs checksum
@@ -2599,6 +2622,12 @@ int skb_checksum_help(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(skb_checksum_help);
 
+int skb_sctp_csum_help(struct sk_buff *skb)
+{
+	return __skb_checksum_help(skb, skb_rfc3309_csum);
+}
+EXPORT_SYMBOL(skb_sctp_csum_help);
+
 __be16 skb_network_protocol(struct sk_buff *skb, int *depth)
 {
 	__be16 type = skb->protocol;
-- 
2.7.4

[RFC PATCH net-next 4/5] net: more accurate checksumming in validate_xmit_skb

[Davide Caratti]

introduce skb_csum_hwoffload_help and use it as a replacement for
skb_checksum_help in validate_xmit_skb, to compute checksum using crc32c or
2-complement Internet Checksum (or leave the packet unchanged and let the
NIC do the checksum), depending on netdev checksum offloading capabilities
and on presence of IPPROTO_SCTP as protocol number in IPv4/IPv6 header.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/core/dev.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 50 insertions(+), 2 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 45cee84..f8cb3ba 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -140,6 +140,7 @@
 #include <linux/hrtimer.h>
 #include <linux/netfilter_ingress.h>
 #include <linux/crash_dump.h>
+#include <linux/sctp.h>
 
 #include "net-sysfs.h"
 
@@ -2960,6 +2961,54 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+static int skb_csum_hwoffload_help(struct sk_buff *skb,
+				   netdev_features_t features)
+{
+	bool encap = skb->encapsulation;
+	unsigned int offset = 0;
+	__be16 protocol;
+
+	if (likely((features & (NETIF_F_SCTP_CRC | NETIF_F_CSUM_MASK)) ==
+	    (NETIF_F_SCTP_CRC | NETIF_F_CSUM_MASK)))
+		return 0;
+
+	if (skb->csum_offset != offsetof(struct sctphdr, checksum))
+		goto inet_csum;
+
+	if (encap) {
+		protocol = skb->inner_protocol;
+		if (skb->inner_protocol_type == ENCAP_TYPE_IPPROTO)
+			switch (protocol) {
+			case IPPROTO_IPV6:
+				protocol = ntohs(ETH_P_IPV6);
+				break;
+			case IPPROTO_IP:
+				protocol = ntohs(ETH_P_IP);
+				break;
+			default:
+				goto inet_csum;
+			}
+	} else {
+		protocol = vlan_get_protocol(skb);
+	}
+	switch (protocol) {
+	case ntohs(ETH_P_IP):
+		if ((encap ? inner_ip_hdr(skb) : ip_hdr(skb))->protocol ==
+		    IPPROTO_SCTP)
+			goto sctp_csum;
+		break;
+	case ntohs(ETH_P_IPV6):
+		if (ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL) ==
+		    IPPROTO_SCTP)
+			goto sctp_csum;
+		break;
+	}
+inet_csum:
+	return !(features & NETIF_F_CSUM_MASK) ? skb_checksum_help(skb) : 0;
+sctp_csum:
+	return !(features & NETIF_F_SCTP_CRC) ? skb_sctp_csum_help(skb) : 0;
+}
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -2995,8 +3044,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features))
 				goto out_kfree_skb;
 		}
 	}
-- 
2.7.4

[RFC PATCH net-next 4/5] net: more accurate checksumming in validate_xmit_skb

[Davide Caratti]

introduce skb_csum_hwoffload_help and use it as a replacement for
skb_checksum_help in validate_xmit_skb, to compute checksum using crc32c or
2-complement Internet Checksum (or leave the packet unchanged and let the
NIC do the checksum), depending on netdev checksum offloading capabilities
and on presence of IPPROTO_SCTP as protocol number in IPv4/IPv6 header.

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/core/dev.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 50 insertions(+), 2 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 45cee84..f8cb3ba 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -140,6 +140,7 @@
 #include <linux/hrtimer.h>
 #include <linux/netfilter_ingress.h>
 #include <linux/crash_dump.h>
+#include <linux/sctp.h>
 
 #include "net-sysfs.h"
 
@@ -2960,6 +2961,54 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
 	return skb;
 }
 
+static int skb_csum_hwoffload_help(struct sk_buff *skb,
+				   netdev_features_t features)
+{
+	bool encap = skb->encapsulation;
+	unsigned int offset = 0;
+	__be16 protocol;
+
+	if (likely((features & (NETIF_F_SCTP_CRC | NETIF_F_CSUM_MASK)) =
+	    (NETIF_F_SCTP_CRC | NETIF_F_CSUM_MASK)))
+		return 0;
+
+	if (skb->csum_offset != offsetof(struct sctphdr, checksum))
+		goto inet_csum;
+
+	if (encap) {
+		protocol = skb->inner_protocol;
+		if (skb->inner_protocol_type = ENCAP_TYPE_IPPROTO)
+			switch (protocol) {
+			case IPPROTO_IPV6:
+				protocol = ntohs(ETH_P_IPV6);
+				break;
+			case IPPROTO_IP:
+				protocol = ntohs(ETH_P_IP);
+				break;
+			default:
+				goto inet_csum;
+			}
+	} else {
+		protocol = vlan_get_protocol(skb);
+	}
+	switch (protocol) {
+	case ntohs(ETH_P_IP):
+		if ((encap ? inner_ip_hdr(skb) : ip_hdr(skb))->protocol =
+		    IPPROTO_SCTP)
+			goto sctp_csum;
+		break;
+	case ntohs(ETH_P_IPV6):
+		if (ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL) =
+		    IPPROTO_SCTP)
+			goto sctp_csum;
+		break;
+	}
+inet_csum:
+	return !(features & NETIF_F_CSUM_MASK) ? skb_checksum_help(skb) : 0;
+sctp_csum:
+	return !(features & NETIF_F_SCTP_CRC) ? skb_sctp_csum_help(skb) : 0;
+}
+
 static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
 {
 	netdev_features_t features;
@@ -2995,8 +3044,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
 			else
 				skb_set_transport_header(skb,
 							 skb_checksum_start_offset(skb));
-			if (!(features & NETIF_F_CSUM_MASK) &&
-			    skb_checksum_help(skb))
+			if (skb_csum_hwoffload_help(skb, features))
 				goto out_kfree_skb;
 		}
 	}
-- 
2.7.4

[RFC PATCH net-next 5/5] Documentation: add description of skb_sctp_csum_help

[Davide Caratti]

Add description of skb_sctp_csum_help in networking/checksum-offload.txt;
while at it, remove reference to skb_csum_off_chk* functions, since they
are not present anymore in Linux since commit cf53b1da73bd ('Revert "net:
Add driver helper functions to determine checksum"').

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/networking/checksum-offloads.txt | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Documentation/networking/checksum-offloads.txt b/Documentation/networking/checksum-offloads.txt
index 56e3686..cb7a7e5 100644
--- a/Documentation/networking/checksum-offloads.txt
+++ b/Documentation/networking/checksum-offloads.txt
@@ -49,9 +49,9 @@ A driver declares its offload capabilities in netdev->hw_features; see
  and csum_offset given in the SKB; if it tries to deduce these itself in
  hardware (as some NICs do) the driver should check that the values in the
  SKB match those which the hardware will deduce, and if not, fall back to
- checksumming in software instead (with skb_checksum_help or one of the
- skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h).  This
- is a pain, but that's what you get when hardware tries to be clever.
+ checksumming in software instead (with skb_checksum_help or
+ skb_sctp_csum_help functions as mentioned in include/linux/skbuff.h).
+ This is a pain, but that's what you get when hardware tries to be clever.
 
 The stack should, for the most part, assume that checksum offload is
  supported by the underlying device.  The only place that should check is
@@ -60,7 +60,8 @@ The stack should, for the most part, assume that checksum offload is
  may include other offloads besides TX Checksum Offload) and, if they are
  not supported or enabled on the device (determined by netdev->features),
  performs the corresponding offload in software.  In the case of TX
- Checksum Offload, that means calling skb_checksum_help(skb).
+ Checksum Offload, that means calling skb_sctp_csum_help(skb) for SCTP
+ packets, and skb_checksum_help(skb) for other packets.
 
 
 LCO: Local Checksum Offload
-- 
2.7.4

[RFC PATCH net-next 5/5] Documentation: add description of skb_sctp_csum_help

[Davide Caratti]

Add description of skb_sctp_csum_help in networking/checksum-offload.txt;
while at it, remove reference to skb_csum_off_chk* functions, since they
are not present anymore in Linux since commit cf53b1da73bd ('Revert "net:
Add driver helper functions to determine checksum"').

Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/networking/checksum-offloads.txt | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Documentation/networking/checksum-offloads.txt b/Documentation/networking/checksum-offloads.txt
index 56e3686..cb7a7e5 100644
--- a/Documentation/networking/checksum-offloads.txt
+++ b/Documentation/networking/checksum-offloads.txt
@@ -49,9 +49,9 @@ A driver declares its offload capabilities in netdev->hw_features; see
  and csum_offset given in the SKB; if it tries to deduce these itself in
  hardware (as some NICs do) the driver should check that the values in the
  SKB match those which the hardware will deduce, and if not, fall back to
- checksumming in software instead (with skb_checksum_help or one of the
- skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h).  This
- is a pain, but that's what you get when hardware tries to be clever.
+ checksumming in software instead (with skb_checksum_help or
+ skb_sctp_csum_help functions as mentioned in include/linux/skbuff.h).
+ This is a pain, but that's what you get when hardware tries to be clever.
 
 The stack should, for the most part, assume that checksum offload is
  supported by the underlying device.  The only place that should check is
@@ -60,7 +60,8 @@ The stack should, for the most part, assume that checksum offload is
  may include other offloads besides TX Checksum Offload) and, if they are
  not supported or enabled on the device (determined by netdev->features),
  performs the corresponding offload in software.  In the case of TX
- Checksum Offload, that means calling skb_checksum_help(skb).
+ Checksum Offload, that means calling skb_sctp_csum_help(skb) for SCTP
+ packets, and skb_checksum_help(skb) for other packets.
 
 
 LCO: Local Checksum Offload
-- 
2.7.4