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authorAl Viro <viro@zeniv.linux.org.uk>2006-11-16 05:41:18 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-03 00:23:41 -0500
commitf9214b2627fb8582af1986afc4aed5942086a535 (patch)
tree13bd40def90b1bcf77e2c79a4fcabf60a4d5d444 /include
parent5c78f275e696a25a9919671aa8aa3d0a3d967978 (diff)
[NET]: ipvs checksum annotations.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/ip_vs.h14
1 files changed, 10 insertions, 4 deletions
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index fedea8db156a..672564e5a81d 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -990,12 +990,18 @@ extern void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
990 990
991extern __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset); 991extern __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset);
992 992
993static inline u16 ip_vs_check_diff(u32 old, u32 new, u16 oldsum) 993static inline __wsum ip_vs_check_diff4(__be32 old, __be32 new, __wsum oldsum)
994{ 994{
995 u32 diff[2] = { old, new }; 995 __be32 diff[2] = { ~old, new };
996 996
997 return csum_fold(csum_partial((char *) diff, sizeof(diff), 997 return csum_partial((char *) diff, sizeof(diff), oldsum);
998 oldsum ^ 0xFFFF)); 998}
999
1000static inline __wsum ip_vs_check_diff2(__be16 old, __be16 new, __wsum oldsum)
1001{
1002 __be16 diff[2] = { ~old, new };
1003
1004 return csum_partial((char *) diff, sizeof(diff), oldsum);
999} 1005}
1000 1006
1001#endif /* __KERNEL__ */ 1007#endif /* __KERNEL__ */