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[NET]: Optimize pskb_trim_rcsum()

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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>
This commit is contained in:
Stephen Hemminger 2005-09-08 12:32:03 -07:00 committed by David S. Miller
parent 1b11d78cf8
commit 0e4e4220f1
1 changed files with 1 additions and 1 deletions
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2
include/linux/skbuff.h
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@ -1167,7 +1167,7 @@ static inline void skb_postpull_rcsum(struct sk_buff *skb,
static inline int pskb_trim_rcsum(struct sk_buff *skb, unsigned int len)
{
if (len >= skb->len)
if (likely(len >= skb->len))
return 0;
if (skb->ip_summed == CHECKSUM_HW)
skb->ip_summed = CHECKSUM_NONE;