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authorHerbert Xu <herbert@gondor.apana.org.au>2005-11-10 16:01:24 -0500
committerDavid S. Miller <davem@davemloft.net>2005-11-10 16:01:24 -0500
commitfb286bb2990a107009dbf25f6ffebeb7df77f9be (patch)
tree0eede2c37f1b3831e59601933eebf6b82be75ffc /include/net/tcp.h
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 'include/net/tcp.h')
-rw-r--r--include/net/tcp.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index c24339c4e310..96cc3b434e40 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -27,6 +27,7 @@
27#include <linux/slab.h> 27#include <linux/slab.h>
28#include <linux/cache.h> 28#include <linux/cache.h>
29#include <linux/percpu.h> 29#include <linux/percpu.h>
30#include <linux/skbuff.h>
30 31
31#include <net/inet_connection_sock.h> 32#include <net/inet_connection_sock.h>
32#include <net/inet_timewait_sock.h> 33#include <net/inet_timewait_sock.h>
@@ -852,7 +853,7 @@ static __inline__ u16 tcp_v4_check(struct tcphdr *th, int len,
852 853
853static __inline__ int __tcp_checksum_complete(struct sk_buff *skb) 854static __inline__ int __tcp_checksum_complete(struct sk_buff *skb)
854{ 855{
855 return (unsigned short)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum)); 856 return __skb_checksum_complete(skb);
856} 857}
857 858
858static __inline__ int tcp_checksum_complete(struct sk_buff *skb) 859static __inline__ int tcp_checksum_complete(struct sk_buff *skb)