[PATCH 3/3] ipv4: Elide use of rt->rt_dst in ip_forward()
From: David Miller <davem@davemloft.net>
Date: 2011-05-12 23:39:14
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
No matter what kind of header mangling occurs due to IP options processing, rt->rt_dst will always equal iph->daddr in the packet. So we can safely use iph->daddr instead of rt->rt_dst here. Signed-off-by: David S. Miller <davem@davemloft.net> --- net/ipv4/ip_forward.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c
index 99461f0..fcbc0c8 100644
--- a/net/ipv4/ip_forward.c
+++ b/net/ipv4/ip_forward.c@@ -84,7 +84,7 @@ int ip_forward(struct sk_buff *skb) rt = skb_rtable(skb); - if (opt->is_strictroute && rt->rt_dst != rt->rt_gateway) + if (opt->is_strictroute && iph->daddr != rt->rt_gateway) goto sr_failed; if (unlikely(skb->len > dst_mtu(&rt->dst) && !skb_is_gso(skb) &&
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1.7.4.4