diff mbox

[v2,net-next] ipv6: log src and dst along with "udp checksum is 0"

Message ID 1393359062-16844-1-git-send-email-bjorn@mork.no
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Bjørn Mork Feb. 25, 2014, 8:11 p.m. UTC
These info messages are rather pointless without any means to identify
the source of the bogus packets.  Logging the src and dst addresses and
ports may help a bit.

Cc: Joe Perches <joe@perches.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
---
v2: log port numbers too.  Suggested by Joe Perches

build tested only


 net/ipv6/ip6_checksum.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

David Miller Feb. 26, 2014, 8:47 p.m. UTC | #1
From: Bjørn Mork <bjorn@mork.no>
Date: Tue, 25 Feb 2014 21:11:02 +0100

> These info messages are rather pointless without any means to identify
> the source of the bogus packets.  Logging the src and dst addresses and
> ports may help a bit.
> 
> Cc: Joe Perches <joe@perches.com>
> Signed-off-by: Bjørn Mork <bjorn@mork.no>
> ---
> v2: log port numbers too.  Suggested by Joe Perches

Applied.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/net/ipv6/ip6_checksum.c b/net/ipv6/ip6_checksum.c
index 72d198b8e4d2..ee7a97f510cb 100644
--- a/net/ipv6/ip6_checksum.c
+++ b/net/ipv6/ip6_checksum.c
@@ -79,7 +79,9 @@  int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, int proto)
 		/* RFC 2460 section 8.1 says that we SHOULD log
 		   this error. Well, it is reasonable.
 		 */
-		LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0\n");
+		LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0 for [%pI6c]:%u->[%pI6c]:%u\n",
+			       &ipv6_hdr(skb)->saddr, ntohs(uh->source),
+			       &ipv6_hdr(skb)->daddr, ntohs(uh->dest));
 		return 1;
 	}
 	if (skb->ip_summed == CHECKSUM_COMPLETE &&