[NET]: ipvs checksum annotations.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

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,
 
 extern __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset);
 
-static inline u16 ip_vs_check_diff(u32 old, u32 new, u16 oldsum)
+static inline __wsum ip_vs_check_diff4(__be32 old, __be32 new, __wsum oldsum)
 {
-        u32 diff[2] = { old, new };
+        __be32 diff[2] = { ~old, new };
 
-        return csum_fold(csum_partial((char *) diff, sizeof(diff),
-                                      oldsum ^ 0xFFFF));
+        return csum_partial((char *) diff, sizeof(diff), oldsum);
+}
+
+static inline __wsum ip_vs_check_diff2(__be16 old, __be16 new, __wsum oldsum)
+{
+        __be16 diff[2] = { ~old, new };
+
+        return csum_partial((char *) diff, sizeof(diff), oldsum);
 }
 
 #endif /* __KERNEL__ */