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authorStephen Hemminger <shemminger@osdl.org>2005-09-08 15:32:03 -0400
committerDavid S. Miller <davem@davemloft.net>2005-09-08 15:32:03 -0400
commit0e4e4220f10bf8f58a8606f0cb28538088c64b1a (patch)
tree5700dfd0ceab3b435a7fc91cc25e56bb911ce2a9
parent1b11d78cf87a7014f96e5b7fa2e1233cc8081a00 (diff)
[NET]: Optimize pskb_trim_rcsum()
Since packets almost never contain extra garbage at the end, it is worthwhile to optimize for that case. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/linux/skbuff.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index da7da9c0ed1b..2741c0c55e83 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1167,7 +1167,7 @@ static inline void skb_postpull_rcsum(struct sk_buff *skb,
1167 1167
1168static inline int pskb_trim_rcsum(struct sk_buff *skb, unsigned int len) 1168static inline int pskb_trim_rcsum(struct sk_buff *skb, unsigned int len)
1169{ 1169{
1170 if (len >= skb->len) 1170 if (likely(len >= skb->len))
1171 return 0; 1171 return 0;
1172 if (skb->ip_summed == CHECKSUM_HW) 1172 if (skb->ip_summed == CHECKSUM_HW)
1173 skb->ip_summed = CHECKSUM_NONE; 1173 skb->ip_summed = CHECKSUM_NONE;