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authorHerbert Xu <herbert@gondor.apana.org.au>2005-11-10 13:01:24 -0800
committerDavid S. Miller <davem@davemloft.net>2005-11-10 13:01:24 -0800
commitfb286bb2990a107009dbf25f6ffebeb7df77f9be (patch)
tree0eede2c37f1b3831e59601933eebf6b82be75ffc /net/ipv4/icmp.c
parent1064e944d03eb7a72c0fa11236d5e69cfd877a71 (diff)
[NET]: Detect hardware rx checksum faults correctly
Here is the patch that introduces the generic skb_checksum_complete which also checks for hardware RX checksum faults. If that happens, it'll call netdev_rx_csum_fault which currently prints out a stack trace with the device name. In future it can turn off RX checksum. I've converted every spot under net/ that does RX checksum checks to use skb_checksum_complete or __skb_checksum_complete with the exceptions of: * Those places where checksums are done bit by bit. These will call netdev_rx_csum_fault directly. * The following have not been completely checked/converted: ipmr ip_vs netfilter dccp This patch is based on patches and suggestions from Stephen Hemminger and David S. Miller. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/icmp.c')
-rw-r--r--net/ipv4/icmp.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 175e093ec564..e3eceecd0496 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -934,11 +934,11 @@ int icmp_rcv(struct sk_buff *skb)
case CHECKSUM_HW:
if (!(u16)csum_fold(skb->csum))
break;
- LIMIT_NETDEBUG(KERN_DEBUG "icmp v4 hw csum failure\n");
+ /* fall through */
case CHECKSUM_NONE:
- if ((u16)csum_fold(skb_checksum(skb, 0, skb->len, 0)))
+ skb->csum = 0;
+ if (__skb_checksum_complete(skb))
goto error;
- default:;
}
if (!pskb_pull(skb, sizeof(struct icmphdr)))