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authorThomas Graf <tgraf@suug.ch>2005-08-20 17:25:52 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-08-29 16:02:57 -0700
commite9c604227391308b185aa6b14c7f93b0a0c2e51b (patch)
tree7562b6a91b5dacd25e19086a354cde1a281471af
parent58615242417638794a5ba299c49e3fbd6f47c2a3 (diff)
[IPV4]: Avoid common branch misprediction while checking csum in ip_rcv()
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/ip_input.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 322b082ede1..6a06e15694d 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -400,7 +400,7 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
iph = skb->nh.iph;
- if (ip_fast_csum((u8 *)iph, iph->ihl) != 0)
+ if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl)))
goto inhdr_error;
len = ntohs(iph->tot_len);