* [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder
@ 2021-02-02 13:55 Leon Romanovsky
2021-02-02 13:55 ` [PATCH net 1/4] ipv6: silence compilation warning for non-IPV6 builds Leon Romanovsky
` (4 more replies)
0 siblings, 5 replies; 14+ messages in thread
From: Leon Romanovsky @ 2021-02-02 13:55 UTC (permalink / raw)
To: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso
Cc: Leon Romanovsky, coreteam, Eric Dumazet, Florian Westphal,
Hideaki YOSHIFUJI, Jozsef Kadlecsik, Julian Anastasov,
linux-kernel, lvs-devel, Matteo Croce, netdev, netfilter-devel,
Simon Horman
From: Leon Romanovsky <leonro@nvidia.com>
Hi,
This short series fixes W=1 compilation warnings which I experienced
when tried to compile net/* folder.
Thanks
Leon Romanovsky (4):
ipv6: silence compilation warning for non-IPV6 builds
ipv6: move udp declarations to net/udp.h
net/core: move ipv6 gro function declarations to net/ipv6
netfilter: move handlers to net/ip_vs.h
include/net/ip_vs.h | 11 +++++++++++
include/net/ipv6.h | 3 +++
include/net/udp.h | 3 +++
net/core/dev.c | 4 +---
net/ipv6/icmp.c | 6 ++++++
net/ipv6/ip6_input.c | 3 +--
net/netfilter/ipvs/ip_vs_core.c | 12 ------------
7 files changed, 25 insertions(+), 17 deletions(-)
--
2.29.2
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH net 1/4] ipv6: silence compilation warning for non-IPV6 builds
2021-02-02 13:55 [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Leon Romanovsky
@ 2021-02-02 13:55 ` Leon Romanovsky
2021-02-02 16:29 ` Jakub Kicinski
2021-02-02 13:55 ` [PATCH net 2/4] ipv6: move udp declarations to net/udp.h Leon Romanovsky
` (3 subsequent siblings)
4 siblings, 1 reply; 14+ messages in thread
From: Leon Romanovsky @ 2021-02-02 13:55 UTC (permalink / raw)
To: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso
Cc: Leon Romanovsky, coreteam, Eric Dumazet, Florian Westphal,
Hideaki YOSHIFUJI, Jozsef Kadlecsik, Julian Anastasov,
linux-kernel, lvs-devel, Matteo Croce, netdev, netfilter-devel,
Simon Horman
From: Leon Romanovsky <leonro@nvidia.com>
The W=1 compilation of allmodconfig generates the following warning:
net/ipv6/icmp.c:448:6: warning: no previous prototype for 'icmp6_send' [-Wmissing-prototypes]
448 | void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
| ^~~~~~~~~~
In such configuration, the icmp6_send() is not used outside of icmp.c, so close
its EXPORT_SYMBOL and add "static" word to limit the scope.
Fixes: cc7a21b6fbd9 ("ipv6: icmp6: avoid indirect call for icmpv6_send()")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
net/ipv6/icmp.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index f3d05866692e..5d4232b492dc 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -445,6 +445,9 @@ static int icmp6_iif(const struct sk_buff *skb)
/*
* Send an ICMP message in response to a packet in error
*/
+#if !IS_BUILTIN(CONFIG_IPV6)
+static
+#endif
void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
const struct in6_addr *force_saddr)
{
@@ -634,7 +637,10 @@ void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
out_bh_enable:
local_bh_enable();
}
+
+#if IS_BUILTIN(CONFIG_IPV6)
EXPORT_SYMBOL(icmp6_send);
+#endif
/* Slightly more convenient version of icmp6_send.
*/
--
2.29.2
^ permalink raw reply related [flat|nested] 14+ messages in thread
* [PATCH net 2/4] ipv6: move udp declarations to net/udp.h
2021-02-02 13:55 [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Leon Romanovsky
2021-02-02 13:55 ` [PATCH net 1/4] ipv6: silence compilation warning for non-IPV6 builds Leon Romanovsky
@ 2021-02-02 13:55 ` Leon Romanovsky
2021-02-02 13:55 ` [PATCH net 3/4] net/core: move ipv6 gro function declarations to net/ipv6 Leon Romanovsky
` (2 subsequent siblings)
4 siblings, 0 replies; 14+ messages in thread
From: Leon Romanovsky @ 2021-02-02 13:55 UTC (permalink / raw)
To: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso
Cc: Leon Romanovsky, coreteam, Eric Dumazet, Florian Westphal,
Hideaki YOSHIFUJI, Jozsef Kadlecsik, Julian Anastasov,
linux-kernel, lvs-devel, Matteo Croce, netdev, netfilter-devel,
Simon Horman
From: Leon Romanovsky <leonro@nvidia.com>
Fix the following compilation warning:
net/ipv6/udp.c:1031:30: warning: no previous prototype for 'udp_v6_early_demux' [-Wmissing-prototypes]
1031 | INDIRECT_CALLABLE_SCOPE void udp_v6_early_demux(struct sk_buff *skb)
| ^~~~~~~~~~~~~~~~~~
net/ipv6/udp.c:1072:29: warning: no previous prototype for 'udpv6_rcv' [-Wmissing-prototypes]
1072 | INDIRECT_CALLABLE_SCOPE int udpv6_rcv(struct sk_buff *skb)
| ^~~~~~~~~
Fixes: 97ff7ffb11fe ("net: use indirect calls helpers at early demux stage")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
include/net/udp.h | 3 +++
net/ipv6/ip6_input.c | 3 +--
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/net/udp.h b/include/net/udp.h
index 877832bed471..ff2de866bca4 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -173,6 +173,9 @@ INDIRECT_CALLABLE_DECLARE(int udp4_gro_complete(struct sk_buff *, int));
INDIRECT_CALLABLE_DECLARE(struct sk_buff *udp6_gro_receive(struct list_head *,
struct sk_buff *));
INDIRECT_CALLABLE_DECLARE(int udp6_gro_complete(struct sk_buff *, int));
+INDIRECT_CALLABLE_DECLARE(void udp_v6_early_demux(struct sk_buff *));
+INDIRECT_CALLABLE_DECLARE(int udpv6_rcv(struct sk_buff *));
+
struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb,
struct udphdr *uh, struct sock *sk);
int udp_gro_complete(struct sk_buff *skb, int nhoff, udp_lookup_t lookup);
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index e96304d8a4a7..e9d2a4a409aa 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -32,6 +32,7 @@
#include <net/sock.h>
#include <net/snmp.h>
+#include <net/udp.h>
#include <net/ipv6.h>
#include <net/protocol.h>
@@ -44,7 +45,6 @@
#include <net/inet_ecn.h>
#include <net/dst_metadata.h>
-INDIRECT_CALLABLE_DECLARE(void udp_v6_early_demux(struct sk_buff *));
INDIRECT_CALLABLE_DECLARE(void tcp_v6_early_demux(struct sk_buff *));
static void ip6_rcv_finish_core(struct net *net, struct sock *sk,
struct sk_buff *skb)
@@ -352,7 +352,6 @@ void ipv6_list_rcv(struct list_head *head, struct packet_type *pt,
ip6_sublist_rcv(&sublist, curr_dev, curr_net);
}
-INDIRECT_CALLABLE_DECLARE(int udpv6_rcv(struct sk_buff *));
INDIRECT_CALLABLE_DECLARE(int tcp_v6_rcv(struct sk_buff *));
/*
--
2.29.2
^ permalink raw reply related [flat|nested] 14+ messages in thread
* [PATCH net 3/4] net/core: move ipv6 gro function declarations to net/ipv6
2021-02-02 13:55 [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Leon Romanovsky
2021-02-02 13:55 ` [PATCH net 1/4] ipv6: silence compilation warning for non-IPV6 builds Leon Romanovsky
2021-02-02 13:55 ` [PATCH net 2/4] ipv6: move udp declarations to net/udp.h Leon Romanovsky
@ 2021-02-02 13:55 ` Leon Romanovsky
2021-02-02 14:57 ` Eric Dumazet
2021-02-02 13:55 ` [PATCH net 4/4] netfilter: move handlers to net/ip_vs.h Leon Romanovsky
2021-02-02 14:34 ` [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Eric Dumazet
4 siblings, 1 reply; 14+ messages in thread
From: Leon Romanovsky @ 2021-02-02 13:55 UTC (permalink / raw)
To: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso
Cc: Leon Romanovsky, coreteam, Eric Dumazet, Florian Westphal,
Hideaki YOSHIFUJI, Jozsef Kadlecsik, Julian Anastasov,
linux-kernel, lvs-devel, Matteo Croce, netdev, netfilter-devel,
Simon Horman
From: Leon Romanovsky <leonro@nvidia.com>
Fir the following compilation warnings:
1031 | INDIRECT_CALLABLE_SCOPE void udp_v6_early_demux(struct sk_buff *skb)
net/ipv6/ip6_offload.c:182:41: warning: no previous prototype for ‘ipv6_gro_receive’ [-Wmissing-prototypes]
182 | INDIRECT_CALLABLE_SCOPE struct sk_buff *ipv6_gro_receive(struct list_head *head,
| ^~~~~~~~~~~~~~~~
net/ipv6/ip6_offload.c:320:29: warning: no previous prototype for ‘ipv6_gro_complete’ [-Wmissing-prototypes]
320 | INDIRECT_CALLABLE_SCOPE int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
| ^~~~~~~~~~~~~~~~~
net/ipv6/ip6_offload.c:182:41: warning: no previous prototype for ‘ipv6_gro_receive’ [-Wmissing-prototypes]
182 | INDIRECT_CALLABLE_SCOPE struct sk_buff *ipv6_gro_receive(struct list_head *head,
| ^~~~~~~~~~~~~~~~
net/ipv6/ip6_offload.c:320:29: warning: no previous prototype for ‘ipv6_gro_complete’ [-Wmissing-prototypes]
320 | INDIRECT_CALLABLE_SCOPE int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
Fixes: aaa5d90b395a ("net: use indirect call wrappers at GRO network layer")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
include/net/ipv6.h | 3 +++
net/core/dev.c | 4 +---
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index bd1f396cc9c7..68676e6bd4b1 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -1265,4 +1265,7 @@ static inline void ip6_sock_set_recvpktinfo(struct sock *sk)
release_sock(sk);
}
+INDIRECT_CALLABLE_DECLARE(struct sk_buff *ipv6_gro_receive(struct list_head *,
+ struct sk_buff *));
+INDIRECT_CALLABLE_DECLARE(int ipv6_gro_complete(struct sk_buff *, int));
#endif /* _NET_IPV6_H */
diff --git a/net/core/dev.c b/net/core/dev.c
index c360bb5367e2..9a3d8768524b 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -101,6 +101,7 @@
#include <net/dsa.h>
#include <net/dst.h>
#include <net/dst_metadata.h>
+#include <net/ipv6.h>
#include <net/pkt_sched.h>
#include <net/pkt_cls.h>
#include <net/checksum.h>
@@ -5743,7 +5744,6 @@ static void gro_normal_one(struct napi_struct *napi, struct sk_buff *skb)
}
INDIRECT_CALLABLE_DECLARE(int inet_gro_complete(struct sk_buff *, int));
-INDIRECT_CALLABLE_DECLARE(int ipv6_gro_complete(struct sk_buff *, int));
static int napi_gro_complete(struct napi_struct *napi, struct sk_buff *skb)
{
struct packet_offload *ptype;
@@ -5914,8 +5914,6 @@ static void gro_flush_oldest(struct napi_struct *napi, struct list_head *head)
INDIRECT_CALLABLE_DECLARE(struct sk_buff *inet_gro_receive(struct list_head *,
struct sk_buff *));
-INDIRECT_CALLABLE_DECLARE(struct sk_buff *ipv6_gro_receive(struct list_head *,
- struct sk_buff *));
static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
{
u32 hash = skb_get_hash_raw(skb) & (GRO_HASH_BUCKETS - 1);
--
2.29.2
^ permalink raw reply related [flat|nested] 14+ messages in thread
* [PATCH net 4/4] netfilter: move handlers to net/ip_vs.h
2021-02-02 13:55 [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Leon Romanovsky
` (2 preceding siblings ...)
2021-02-02 13:55 ` [PATCH net 3/4] net/core: move ipv6 gro function declarations to net/ipv6 Leon Romanovsky
@ 2021-02-02 13:55 ` Leon Romanovsky
2021-02-02 14:34 ` [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Eric Dumazet
4 siblings, 0 replies; 14+ messages in thread
From: Leon Romanovsky @ 2021-02-02 13:55 UTC (permalink / raw)
To: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso
Cc: Leon Romanovsky, coreteam, Eric Dumazet, Florian Westphal,
Hideaki YOSHIFUJI, Jozsef Kadlecsik, Julian Anastasov,
linux-kernel, lvs-devel, Matteo Croce, netdev, netfilter-devel,
Simon Horman
From: Leon Romanovsky <leonro@nvidia.com>
Fix the following compilation warnings:
net/netfilter/ipvs/ip_vs_proto_tcp.c:147:1: warning: no previous prototype for 'tcp_snat_handler' [-Wmissing-prototypes]
147 | tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
| ^~~~~~~~~~~~~~~~
net/netfilter/ipvs/ip_vs_proto_udp.c:136:1: warning: no previous prototype for 'udp_snat_handler' [-Wmissing-prototypes]
136 | udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
| ^~~~~~~~~~~~~~~~
Fixes: 6ecd754883da ("ipvs: use indirect call wrappers")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
include/net/ip_vs.h | 11 +++++++++++
net/netfilter/ipvs/ip_vs_core.c | 12 ------------
2 files changed, 11 insertions(+), 12 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index d609e957a3ec..7cb5a1aace40 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -1712,4 +1712,15 @@ ip_vs_dest_conn_overhead(struct ip_vs_dest *dest)
atomic_read(&dest->inactconns);
}
+#ifdef CONFIG_IP_VS_PROTO_TCP
+INDIRECT_CALLABLE_DECLARE(int
+ tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
+ struct ip_vs_conn *cp, struct ip_vs_iphdr *iph));
+#endif
+
+#ifdef CONFIG_IP_VS_PROTO_UDP
+INDIRECT_CALLABLE_DECLARE(int
+ udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
+ struct ip_vs_conn *cp, struct ip_vs_iphdr *iph));
+#endif
#endif /* _NET_IP_VS_H */
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 54e086c65721..0c132ff9b446 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -68,18 +68,6 @@ EXPORT_SYMBOL(ip_vs_get_debug_level);
#endif
EXPORT_SYMBOL(ip_vs_new_conn_out);
-#ifdef CONFIG_IP_VS_PROTO_TCP
-INDIRECT_CALLABLE_DECLARE(int
- tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
- struct ip_vs_conn *cp, struct ip_vs_iphdr *iph));
-#endif
-
-#ifdef CONFIG_IP_VS_PROTO_UDP
-INDIRECT_CALLABLE_DECLARE(int
- udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
- struct ip_vs_conn *cp, struct ip_vs_iphdr *iph));
-#endif
-
#if defined(CONFIG_IP_VS_PROTO_TCP) && defined(CONFIG_IP_VS_PROTO_UDP)
#define SNAT_CALL(f, ...) \
INDIRECT_CALL_2(f, tcp_snat_handler, udp_snat_handler, __VA_ARGS__)
--
2.29.2
^ permalink raw reply related [flat|nested] 14+ messages in thread
* Re: [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder
2021-02-02 13:55 [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Leon Romanovsky
` (3 preceding siblings ...)
2021-02-02 13:55 ` [PATCH net 4/4] netfilter: move handlers to net/ip_vs.h Leon Romanovsky
@ 2021-02-02 14:34 ` Eric Dumazet
2021-02-02 14:57 ` Leon Romanovsky
4 siblings, 1 reply; 14+ messages in thread
From: Eric Dumazet @ 2021-02-02 14:34 UTC (permalink / raw)
To: Leon Romanovsky
Cc: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso,
Leon Romanovsky, coreteam, Florian Westphal, Hideaki YOSHIFUJI,
Jozsef Kadlecsik, Julian Anastasov, LKML, lvs-devel,
Matteo Croce, netdev, netfilter-devel, Simon Horman
On Tue, Feb 2, 2021 at 2:55 PM Leon Romanovsky <leon@kernel.org> wrote:
>
> From: Leon Romanovsky <leonro@nvidia.com>
>
> Hi,
>
> This short series fixes W=1 compilation warnings which I experienced
> when tried to compile net/* folder.
>
Ok, but we never had a strong requirement about W=1, so adding Fixes:
tag is adding
unnecessary burden to stable teams all around the world.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH net 3/4] net/core: move ipv6 gro function declarations to net/ipv6
2021-02-02 13:55 ` [PATCH net 3/4] net/core: move ipv6 gro function declarations to net/ipv6 Leon Romanovsky
@ 2021-02-02 14:57 ` Eric Dumazet
2021-02-02 15:59 ` Leon Romanovsky
0 siblings, 1 reply; 14+ messages in thread
From: Eric Dumazet @ 2021-02-02 14:57 UTC (permalink / raw)
To: Leon Romanovsky
Cc: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso,
Leon Romanovsky, coreteam, Florian Westphal, Hideaki YOSHIFUJI,
Jozsef Kadlecsik, Julian Anastasov, LKML, lvs-devel,
Matteo Croce, netdev, netfilter-devel, Simon Horman
On Tue, Feb 2, 2021 at 2:56 PM Leon Romanovsky <leon@kernel.org> wrote:
>
> From: Leon Romanovsky <leonro@nvidia.com>
>
> Fir the following compilation warnings:
> 1031 | INDIRECT_CALLABLE_SCOPE void udp_v6_early_demux(struct sk_buff *skb)
>
> net/ipv6/ip6_offload.c:182:41: warning: no previous prototype for ‘ipv6_gro_receive’ [-Wmissing-prototypes]
> 182 | INDIRECT_CALLABLE_SCOPE struct sk_buff *ipv6_gro_receive(struct list_head *head,
> | ^~~~~~~~~~~~~~~~
> net/ipv6/ip6_offload.c:320:29: warning: no previous prototype for ‘ipv6_gro_complete’ [-Wmissing-prototypes]
> 320 | INDIRECT_CALLABLE_SCOPE int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
> | ^~~~~~~~~~~~~~~~~
> net/ipv6/ip6_offload.c:182:41: warning: no previous prototype for ‘ipv6_gro_receive’ [-Wmissing-prototypes]
> 182 | INDIRECT_CALLABLE_SCOPE struct sk_buff *ipv6_gro_receive(struct list_head *head,
> | ^~~~~~~~~~~~~~~~
> net/ipv6/ip6_offload.c:320:29: warning: no previous prototype for ‘ipv6_gro_complete’ [-Wmissing-prototypes]
> 320 | INDIRECT_CALLABLE_SCOPE int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
>
> Fixes: aaa5d90b395a ("net: use indirect call wrappers at GRO network layer")
> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
> ---
> include/net/ipv6.h | 3 +++
> net/core/dev.c | 4 +---
> 2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/include/net/ipv6.h b/include/net/ipv6.h
> index bd1f396cc9c7..68676e6bd4b1 100644
> --- a/include/net/ipv6.h
> +++ b/include/net/ipv6.h
> @@ -1265,4 +1265,7 @@ static inline void ip6_sock_set_recvpktinfo(struct sock *sk)
> release_sock(sk);
> }
>
> +INDIRECT_CALLABLE_DECLARE(struct sk_buff *ipv6_gro_receive(struct list_head *,
> + struct sk_buff *));
> +INDIRECT_CALLABLE_DECLARE(int ipv6_gro_complete(struct sk_buff *, int));
I think we should move this to a new include file.
These declarations were static, and had to be made public only because
of DIRECT call stuff,
which is an implementation detail.
Polluting include/net/ipv6.h seems not appropriate.
> #endif /* _NET_IPV6_H */
> diff --git a/net/core/dev.c b/net/core/dev.c
> index c360bb5367e2..9a3d8768524b 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -101,6 +101,7 @@
> #include <net/dsa.h>
> #include <net/dst.h>
> #include <net/dst_metadata.h>
> +#include <net/ipv6.h>
> #include <net/pkt_sched.h>
> #include <net/pkt_cls.h>
> #include <net/checksum.h>
> @@ -5743,7 +5744,6 @@ static void gro_normal_one(struct napi_struct *napi, struct sk_buff *skb)
> }
>
> INDIRECT_CALLABLE_DECLARE(int inet_gro_complete(struct sk_buff *, int));
This is odd.
You move ipv6_gro_complete() but not inet_gro_complete()
I think we should be consistent.
> -INDIRECT_CALLABLE_DECLARE(int ipv6_gro_complete(struct sk_buff *, int));
> static int napi_gro_complete(struct napi_struct *napi, struct sk_buff *skb)
> {
> struct packet_offload *ptype;
> @@ -5914,8 +5914,6 @@ static void gro_flush_oldest(struct napi_struct *napi, struct list_head *head)
>
> INDIRECT_CALLABLE_DECLARE(struct sk_buff *inet_gro_receive(struct list_head *,
> struct sk_buff *));
> -INDIRECT_CALLABLE_DECLARE(struct sk_buff *ipv6_gro_receive(struct list_head *,
> - struct sk_buff *));
> static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
> {
> u32 hash = skb_get_hash_raw(skb) & (GRO_HASH_BUCKETS - 1);
> --
> 2.29.2
>
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder
2021-02-02 14:34 ` [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Eric Dumazet
@ 2021-02-02 14:57 ` Leon Romanovsky
2021-02-02 14:59 ` Eric Dumazet
0 siblings, 1 reply; 14+ messages in thread
From: Leon Romanovsky @ 2021-02-02 14:57 UTC (permalink / raw)
To: Eric Dumazet
Cc: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso, coreteam,
Florian Westphal, Hideaki YOSHIFUJI, Jozsef Kadlecsik,
Julian Anastasov, LKML, lvs-devel, Matteo Croce, netdev,
netfilter-devel, Simon Horman
On Tue, Feb 02, 2021 at 03:34:37PM +0100, Eric Dumazet wrote:
> On Tue, Feb 2, 2021 at 2:55 PM Leon Romanovsky <leon@kernel.org> wrote:
> >
> > From: Leon Romanovsky <leonro@nvidia.com>
> >
> > Hi,
> >
> > This short series fixes W=1 compilation warnings which I experienced
> > when tried to compile net/* folder.
> >
>
> Ok, but we never had a strong requirement about W=1, so adding Fixes:
> tag is adding
I added because Jakub has checker that looks for Fixes lines in "net"
patches.
> unnecessary burden to stable teams all around the world.
It is automatic.
Thanks
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder
2021-02-02 14:57 ` Leon Romanovsky
@ 2021-02-02 14:59 ` Eric Dumazet
2021-02-02 15:54 ` Leon Romanovsky
0 siblings, 1 reply; 14+ messages in thread
From: Eric Dumazet @ 2021-02-02 14:59 UTC (permalink / raw)
To: Leon Romanovsky
Cc: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso, coreteam,
Florian Westphal, Hideaki YOSHIFUJI, Jozsef Kadlecsik,
Julian Anastasov, LKML, lvs-devel, Matteo Croce, netdev,
netfilter-devel, Simon Horman
On Tue, Feb 2, 2021 at 3:57 PM Leon Romanovsky <leon@kernel.org> wrote:
>
> On Tue, Feb 02, 2021 at 03:34:37PM +0100, Eric Dumazet wrote:
> > On Tue, Feb 2, 2021 at 2:55 PM Leon Romanovsky <leon@kernel.org> wrote:
> > >
> > > From: Leon Romanovsky <leonro@nvidia.com>
> > >
> > > Hi,
> > >
> > > This short series fixes W=1 compilation warnings which I experienced
> > > when tried to compile net/* folder.
> > >
> >
> > Ok, but we never had a strong requirement about W=1, so adding Fixes:
> > tag is adding
>
> I added because Jakub has checker that looks for Fixes lines in "net"
> patches.
Send this to net-next
As I stated, we never enforce W=1 compilation rule.
I understand we might want that for _future_ kernels.
>
> > unnecessary burden to stable teams all around the world.
>
> It is automatic.
I do receive a copy of all backports in my mailbox, whenever I am tagged.
I can tell you there is a lot of pollution.
>
> Thanks
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder
2021-02-02 14:59 ` Eric Dumazet
@ 2021-02-02 15:54 ` Leon Romanovsky
0 siblings, 0 replies; 14+ messages in thread
From: Leon Romanovsky @ 2021-02-02 15:54 UTC (permalink / raw)
To: Eric Dumazet
Cc: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso, coreteam,
Florian Westphal, Hideaki YOSHIFUJI, Jozsef Kadlecsik,
Julian Anastasov, LKML, lvs-devel, Matteo Croce, netdev,
netfilter-devel, Simon Horman
On Tue, Feb 02, 2021 at 03:59:38PM +0100, Eric Dumazet wrote:
> On Tue, Feb 2, 2021 at 3:57 PM Leon Romanovsky <leon@kernel.org> wrote:
> >
> > On Tue, Feb 02, 2021 at 03:34:37PM +0100, Eric Dumazet wrote:
> > > On Tue, Feb 2, 2021 at 2:55 PM Leon Romanovsky <leon@kernel.org> wrote:
> > > >
> > > > From: Leon Romanovsky <leonro@nvidia.com>
> > > >
> > > > Hi,
> > > >
> > > > This short series fixes W=1 compilation warnings which I experienced
> > > > when tried to compile net/* folder.
> > > >
> > >
> > > Ok, but we never had a strong requirement about W=1, so adding Fixes:
> > > tag is adding
> >
> > I added because Jakub has checker that looks for Fixes lines in "net"
> > patches.
>
> Send this to net-next
No problem.
>
> As I stated, we never enforce W=1 compilation rule.
>
> I understand we might want that for _future_ kernels.
>
> >
> > > unnecessary burden to stable teams all around the world.
> >
> > It is automatic.
>
> I do receive a copy of all backports in my mailbox, whenever I am tagged.
>
> I can tell you there is a lot of pollution.
I'm receiving them either.
>
> >
> > Thanks
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH net 3/4] net/core: move ipv6 gro function declarations to net/ipv6
2021-02-02 14:57 ` Eric Dumazet
@ 2021-02-02 15:59 ` Leon Romanovsky
0 siblings, 0 replies; 14+ messages in thread
From: Leon Romanovsky @ 2021-02-02 15:59 UTC (permalink / raw)
To: Eric Dumazet
Cc: Jakub Kicinski, David S. Miller, Pablo Neira Ayuso, coreteam,
Florian Westphal, Hideaki YOSHIFUJI, Jozsef Kadlecsik,
Julian Anastasov, LKML, lvs-devel, Matteo Croce, netdev,
netfilter-devel, Simon Horman
On Tue, Feb 02, 2021 at 03:57:07PM +0100, Eric Dumazet wrote:
> On Tue, Feb 2, 2021 at 2:56 PM Leon Romanovsky <leon@kernel.org> wrote:
> >
> > From: Leon Romanovsky <leonro@nvidia.com>
> >
> > Fir the following compilation warnings:
> > 1031 | INDIRECT_CALLABLE_SCOPE void udp_v6_early_demux(struct sk_buff *skb)
> >
> > net/ipv6/ip6_offload.c:182:41: warning: no previous prototype for ‘ipv6_gro_receive’ [-Wmissing-prototypes]
> > 182 | INDIRECT_CALLABLE_SCOPE struct sk_buff *ipv6_gro_receive(struct list_head *head,
> > | ^~~~~~~~~~~~~~~~
> > net/ipv6/ip6_offload.c:320:29: warning: no previous prototype for ‘ipv6_gro_complete’ [-Wmissing-prototypes]
> > 320 | INDIRECT_CALLABLE_SCOPE int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
> > | ^~~~~~~~~~~~~~~~~
> > net/ipv6/ip6_offload.c:182:41: warning: no previous prototype for ‘ipv6_gro_receive’ [-Wmissing-prototypes]
> > 182 | INDIRECT_CALLABLE_SCOPE struct sk_buff *ipv6_gro_receive(struct list_head *head,
> > | ^~~~~~~~~~~~~~~~
> > net/ipv6/ip6_offload.c:320:29: warning: no previous prototype for ‘ipv6_gro_complete’ [-Wmissing-prototypes]
> > 320 | INDIRECT_CALLABLE_SCOPE int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
> >
> > Fixes: aaa5d90b395a ("net: use indirect call wrappers at GRO network layer")
> > Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
> > ---
> > include/net/ipv6.h | 3 +++
> > net/core/dev.c | 4 +---
> > 2 files changed, 4 insertions(+), 3 deletions(-)
> >
> > diff --git a/include/net/ipv6.h b/include/net/ipv6.h
> > index bd1f396cc9c7..68676e6bd4b1 100644
> > --- a/include/net/ipv6.h
> > +++ b/include/net/ipv6.h
> > @@ -1265,4 +1265,7 @@ static inline void ip6_sock_set_recvpktinfo(struct sock *sk)
> > release_sock(sk);
> > }
> >
> > +INDIRECT_CALLABLE_DECLARE(struct sk_buff *ipv6_gro_receive(struct list_head *,
> > + struct sk_buff *));
> > +INDIRECT_CALLABLE_DECLARE(int ipv6_gro_complete(struct sk_buff *, int));
>
>
> I think we should move this to a new include file.
The ipv6_gro_* used in net/core/dev.c and net/ipv6/ip6_offload.c. This
left me with four options:
1. Use existing and already shared file - include/net/ipv6.h
2. Create new header and put it in net/, so include will be something
like that "../new_file.h".
3. Put new header in one of the folders or core/ or ipv6/.
4. Create new file in include/net just for those two lines.
I preferred option #1, which other option do you want me to redo?
>
> These declarations were static, and had to be made public only because
> of DIRECT call stuff,
> which is an implementation detail.
>
> Polluting include/net/ipv6.h seems not appropriate.
Thanks for the review.
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH net 1/4] ipv6: silence compilation warning for non-IPV6 builds
2021-02-02 13:55 ` [PATCH net 1/4] ipv6: silence compilation warning for non-IPV6 builds Leon Romanovsky
@ 2021-02-02 16:29 ` Jakub Kicinski
2021-02-02 18:55 ` Leon Romanovsky
0 siblings, 1 reply; 14+ messages in thread
From: Jakub Kicinski @ 2021-02-02 16:29 UTC (permalink / raw)
To: Leon Romanovsky
Cc: David S. Miller, Pablo Neira Ayuso, Leon Romanovsky, coreteam,
Eric Dumazet, Florian Westphal, Hideaki YOSHIFUJI,
Jozsef Kadlecsik, Julian Anastasov, linux-kernel, lvs-devel,
Matteo Croce, netdev, netfilter-devel, Simon Horman
On Tue, 2 Feb 2021 15:55:41 +0200 Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@nvidia.com>
>
> The W=1 compilation of allmodconfig generates the following warning:
>
> net/ipv6/icmp.c:448:6: warning: no previous prototype for 'icmp6_send' [-Wmissing-prototypes]
> 448 | void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
> | ^~~~~~~~~~
>
> In such configuration, the icmp6_send() is not used outside of icmp.c, so close
> its EXPORT_SYMBOL and add "static" word to limit the scope.
>
> Fixes: cc7a21b6fbd9 ("ipv6: icmp6: avoid indirect call for icmpv6_send()")
> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
That's a little much ifdefinery, why not move the declaration from
under the ifdef in the header instead?
If you repost please target net-next, admittedly these fixes are pretty
"obviously correct" but they are not urgent either.
> diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
> index f3d05866692e..5d4232b492dc 100644
> --- a/net/ipv6/icmp.c
> +++ b/net/ipv6/icmp.c
> @@ -445,6 +445,9 @@ static int icmp6_iif(const struct sk_buff *skb)
> /*
> * Send an ICMP message in response to a packet in error
> */
> +#if !IS_BUILTIN(CONFIG_IPV6)
> +static
> +#endif
> void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
> const struct in6_addr *force_saddr)
> {
> @@ -634,7 +637,10 @@ void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
> out_bh_enable:
> local_bh_enable();
> }
> +
> +#if IS_BUILTIN(CONFIG_IPV6)
> EXPORT_SYMBOL(icmp6_send);
> +#endif
>
> /* Slightly more convenient version of icmp6_send.
> */
> --
> 2.29.2
>
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH net 1/4] ipv6: silence compilation warning for non-IPV6 builds
2021-02-02 16:29 ` Jakub Kicinski
@ 2021-02-02 18:55 ` Leon Romanovsky
2021-02-02 21:55 ` Jakub Kicinski
0 siblings, 1 reply; 14+ messages in thread
From: Leon Romanovsky @ 2021-02-02 18:55 UTC (permalink / raw)
To: Jakub Kicinski
Cc: David S. Miller, Pablo Neira Ayuso, coreteam, Eric Dumazet,
Florian Westphal, Hideaki YOSHIFUJI, Jozsef Kadlecsik,
Julian Anastasov, linux-kernel, lvs-devel, Matteo Croce, netdev,
netfilter-devel, Simon Horman
On Tue, Feb 02, 2021 at 08:29:09AM -0800, Jakub Kicinski wrote:
> On Tue, 2 Feb 2021 15:55:41 +0200 Leon Romanovsky wrote:
> > From: Leon Romanovsky <leonro@nvidia.com>
> >
> > The W=1 compilation of allmodconfig generates the following warning:
> >
> > net/ipv6/icmp.c:448:6: warning: no previous prototype for 'icmp6_send' [-Wmissing-prototypes]
> > 448 | void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
> > | ^~~~~~~~~~
> >
> > In such configuration, the icmp6_send() is not used outside of icmp.c, so close
> > its EXPORT_SYMBOL and add "static" word to limit the scope.
> >
> > Fixes: cc7a21b6fbd9 ("ipv6: icmp6: avoid indirect call for icmpv6_send()")
> > Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
>
> That's a little much ifdefinery, why not move the declaration from
> under the ifdef in the header instead?
We will find ourselves with exported but not used function, it will
increase symbol file, not big deal but not nice, either.
>
> If you repost please target net-next, admittedly these fixes are pretty
> "obviously correct" but they are not urgent either.
I'll do.
Thanks
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH net 1/4] ipv6: silence compilation warning for non-IPV6 builds
2021-02-02 18:55 ` Leon Romanovsky
@ 2021-02-02 21:55 ` Jakub Kicinski
0 siblings, 0 replies; 14+ messages in thread
From: Jakub Kicinski @ 2021-02-02 21:55 UTC (permalink / raw)
To: Leon Romanovsky
Cc: David S. Miller, Pablo Neira Ayuso, coreteam, Eric Dumazet,
Florian Westphal, Hideaki YOSHIFUJI, Jozsef Kadlecsik,
Julian Anastasov, linux-kernel, lvs-devel, Matteo Croce, netdev,
netfilter-devel, Simon Horman
On Tue, 2 Feb 2021 20:55:28 +0200 Leon Romanovsky wrote:
> On Tue, Feb 02, 2021 at 08:29:09AM -0800, Jakub Kicinski wrote:
> > On Tue, 2 Feb 2021 15:55:41 +0200 Leon Romanovsky wrote:
> > > From: Leon Romanovsky <leonro@nvidia.com>
> > >
> > > The W=1 compilation of allmodconfig generates the following warning:
> > >
> > > net/ipv6/icmp.c:448:6: warning: no previous prototype for 'icmp6_send' [-Wmissing-prototypes]
> > > 448 | void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
> > > | ^~~~~~~~~~
> > >
> > > In such configuration, the icmp6_send() is not used outside of icmp.c, so close
> > > its EXPORT_SYMBOL and add "static" word to limit the scope.
> > >
> > > Fixes: cc7a21b6fbd9 ("ipv6: icmp6: avoid indirect call for icmpv6_send()")
> > > Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
> >
> > That's a little much ifdefinery, why not move the declaration from
> > under the ifdef in the header instead?
>
> We will find ourselves with exported but not used function, it will
> increase symbol file, not big deal but not nice, either.
For those all so common builds where IPv6 is a module :)
But I don't feel strongly, up to you.
> > If you repost please target net-next, admittedly these fixes are pretty
> > "obviously correct" but they are not urgent either.
>
> I'll do.
Thanks!
^ permalink raw reply [flat|nested] 14+ messages in thread
end of thread, other threads:[~2021-02-02 21:56 UTC | newest]
Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-02 13:55 [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Leon Romanovsky
2021-02-02 13:55 ` [PATCH net 1/4] ipv6: silence compilation warning for non-IPV6 builds Leon Romanovsky
2021-02-02 16:29 ` Jakub Kicinski
2021-02-02 18:55 ` Leon Romanovsky
2021-02-02 21:55 ` Jakub Kicinski
2021-02-02 13:55 ` [PATCH net 2/4] ipv6: move udp declarations to net/udp.h Leon Romanovsky
2021-02-02 13:55 ` [PATCH net 3/4] net/core: move ipv6 gro function declarations to net/ipv6 Leon Romanovsky
2021-02-02 14:57 ` Eric Dumazet
2021-02-02 15:59 ` Leon Romanovsky
2021-02-02 13:55 ` [PATCH net 4/4] netfilter: move handlers to net/ip_vs.h Leon Romanovsky
2021-02-02 14:34 ` [PATCH net 0/4] Fix W=1 compilation warnings in net/* folder Eric Dumazet
2021-02-02 14:57 ` Leon Romanovsky
2021-02-02 14:59 ` Eric Dumazet
2021-02-02 15:54 ` Leon Romanovsky
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