From 0e4e4220f10bf8f58a8606f0cb28538088c64b1a Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@osdl.org>
Date: Thu, 8 Sep 2005 12:32:03 -0700
Subject: [PATCH] [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>
---
include/linux/skbuff.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index da7da9c0ed1..2741c0c55e8 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,
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;
--
2.41.3