* [PATCH] net: secure_seq: Move net_secret_init() definition into CONFIG_IPV6 if block
@ 2013-10-05 20:56 Fabio Estevam
2013-10-05 20:56 ` [PATCH v2] net: secure_seq: Fix warning when CONFIG_IPV6 and CONFIG_INET are not selected Fabio Estevam
0 siblings, 1 reply; 3+ messages in thread
From: Fabio Estevam @ 2013-10-05 20:56 UTC (permalink / raw)
To: davem; +Cc: edumazet, hannes, netdev, olof, Fabio Estevam
From: Fabio Estevam <fabio.estevam@freescale.com>
Commit 9a3bab6b05 (net: net_secret should not depend on TCP) introduced
the following build warning when CONFIG_IPV6 is not selected:
net/core/secure_seq.c:17:13: warning: 'net_secret_init' defined but not used [-Wunused-function]
Fix it by moving net_secret_init(void) inside the '#if IS_ENABLED(CONFIG_IPV6)'
block.
Reported-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
net/core/secure_seq.c | 36 ++++++++++++++++++------------------
1 file changed, 18 insertions(+), 18 deletions(-)
diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c
index 3f1ec15..ee70541 100644
--- a/net/core/secure_seq.c
+++ b/net/core/secure_seq.c
@@ -10,6 +10,24 @@
#include <net/secure_seq.h>
+#ifdef CONFIG_INET
+static u32 seq_scale(u32 seq)
+{
+ /*
+ * As close as possible to RFC 793, which
+ * suggests using a 250 kHz clock.
+ * Further reading shows this assumes 2 Mb/s networks.
+ * For 10 Mb/s Ethernet, a 1 MHz clock is appropriate.
+ * For 10 Gb/s Ethernet, a 1 GHz clock should be ok, but
+ * we also need to limit the resolution so that the u32 seq
+ * overlaps less than one time per MSL (2 minutes).
+ * Choosing a clock of 64 ns period is OK. (period of 274 s)
+ */
+ return seq + (ktime_to_ns(ktime_get_real()) >> 6);
+}
+#endif
+
+#if IS_ENABLED(CONFIG_IPV6)
#define NET_SECRET_SIZE (MD5_MESSAGE_BYTES / 4)
static u32 net_secret[NET_SECRET_SIZE] ____cacheline_aligned;
@@ -30,24 +48,6 @@ static void net_secret_init(void)
}
}
-#ifdef CONFIG_INET
-static u32 seq_scale(u32 seq)
-{
- /*
- * As close as possible to RFC 793, which
- * suggests using a 250 kHz clock.
- * Further reading shows this assumes 2 Mb/s networks.
- * For 10 Mb/s Ethernet, a 1 MHz clock is appropriate.
- * For 10 Gb/s Ethernet, a 1 GHz clock should be ok, but
- * we also need to limit the resolution so that the u32 seq
- * overlaps less than one time per MSL (2 minutes).
- * Choosing a clock of 64 ns period is OK. (period of 274 s)
- */
- return seq + (ktime_to_ns(ktime_get_real()) >> 6);
-}
-#endif
-
-#if IS_ENABLED(CONFIG_IPV6)
__u32 secure_tcpv6_sequence_number(const __be32 *saddr, const __be32 *daddr,
__be16 sport, __be16 dport)
{
--
1.8.1.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v2] net: secure_seq: Fix warning when CONFIG_IPV6 and CONFIG_INET are not selected
2013-10-05 20:56 [PATCH] net: secure_seq: Move net_secret_init() definition into CONFIG_IPV6 if block Fabio Estevam
@ 2013-10-05 20:56 ` Fabio Estevam
2013-10-07 19:59 ` David Miller
0 siblings, 1 reply; 3+ messages in thread
From: Fabio Estevam @ 2013-10-05 20:56 UTC (permalink / raw)
To: davem; +Cc: edumazet, hannes, netdev, olof, Fabio Estevam
From: Fabio Estevam <fabio.estevam@freescale.com>
net_secret() is only used when CONFIG_IPV6 or CONFIG_INET are selected.
Building a defconfig with both of these symbols unselected (Using the ARM
at91sam9rl_defconfig, for example) leads to the following build warning:
$ make at91sam9rl_defconfig
#
# configuration written to .config
#
$ make net/core/secure_seq.o
scripts/kconfig/conf --silentoldconfig Kconfig
CHK include/config/kernel.release
CHK include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
make[1]: `include/generated/mach-types.h' is up to date.
CALL scripts/checksyscalls.sh
CC net/core/secure_seq.o
net/core/secure_seq.c:17:13: warning: 'net_secret_init' defined but not used [-Wunused-function]
Fix this warning by protecting the definition of net_secret() with these
symbols.
Reported-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
Changes since v1:
- Add #if IS_ENABLED(CONFIG_IPV6) || IS_ENABLED(CONFIG_INET)
net/core/secure_seq.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c
index 3f1ec15..8d9d05e 100644
--- a/net/core/secure_seq.c
+++ b/net/core/secure_seq.c
@@ -10,6 +10,7 @@
#include <net/secure_seq.h>
+#if IS_ENABLED(CONFIG_IPV6) || IS_ENABLED(CONFIG_INET)
#define NET_SECRET_SIZE (MD5_MESSAGE_BYTES / 4)
static u32 net_secret[NET_SECRET_SIZE] ____cacheline_aligned;
@@ -29,6 +30,7 @@ static void net_secret_init(void)
cmpxchg(&net_secret[--i], 0, tmp);
}
}
+#endif
#ifdef CONFIG_INET
static u32 seq_scale(u32 seq)
--
1.8.1.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v2] net: secure_seq: Fix warning when CONFIG_IPV6 and CONFIG_INET are not selected
2013-10-05 20:56 ` [PATCH v2] net: secure_seq: Fix warning when CONFIG_IPV6 and CONFIG_INET are not selected Fabio Estevam
@ 2013-10-07 19:59 ` David Miller
0 siblings, 0 replies; 3+ messages in thread
From: David Miller @ 2013-10-07 19:59 UTC (permalink / raw)
To: festevam; +Cc: edumazet, hannes, netdev, olof, fabio.estevam
From: Fabio Estevam <festevam@gmail.com>
Date: Sat, 5 Oct 2013 17:56:59 -0300
> From: Fabio Estevam <fabio.estevam@freescale.com>
>
> net_secret() is only used when CONFIG_IPV6 or CONFIG_INET are selected.
>
> Building a defconfig with both of these symbols unselected (Using the ARM
> at91sam9rl_defconfig, for example) leads to the following build warning:
...
> Fix this warning by protecting the definition of net_secret() with these
> symbols.
>
> Reported-by: Olof Johansson <olof@lixom.net>
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---
> Changes since v1:
> - Add #if IS_ENABLED(CONFIG_IPV6) || IS_ENABLED(CONFIG_INET)
This looks a lot better, applied, thanks.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-10-05 20:56 [PATCH] net: secure_seq: Move net_secret_init() definition into CONFIG_IPV6 if block Fabio Estevam
2013-10-05 20:56 ` [PATCH v2] net: secure_seq: Fix warning when CONFIG_IPV6 and CONFIG_INET are not selected Fabio Estevam
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