From: Changli Gao <xiaosuo@gmail.com>
Date: Tue, 17 Aug 2010 19:01:38 +0000 (+0000)
Subject: net: rps: skip fragment when computing rxhash
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=dbe5775bbc00116ed5699babfe17c54f32eb34c3;p=openwrt%2Fstaging%2Fblogic.git

net: rps: skip fragment when computing rxhash

Fragmented IP packets may have no transfer header, so when computing
rxhash, we should skip them.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/dev.c b/net/core/dev.c
index cf87fde3a29b..7e97e891636e 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2284,7 +2284,10 @@ __u32 __skb_get_rxhash(struct sk_buff *skb)
 			goto done;
 
 		ip = (struct iphdr *) skb->data + nhoff;
-		ip_proto = ip->protocol;
+		if (ip->frag_off & htons(IP_MF | IP_OFFSET))
+			ip_proto = 0;
+		else
+			ip_proto = ip->protocol;
 		addr1 = (__force u32) ip->saddr;
 		addr2 = (__force u32) ip->daddr;
 		ihl = ip->ihl;