From: David Miller <davem@davemloft.net>
To: netdev@vger.kernel.org
Subject: [PATCH 3/3] ipv4: Elide use of rt->rt_dst in ip_forward()
Date: Thu, 12 May 2011 19:39:11 -0400 (EDT) [thread overview]
Message-ID: <20110512.193911.269827437433393327.davem@davemloft.net> (raw)
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) &&
--
1.7.4.4
reply other threads:[~2011-05-12 23:39 UTC|newest]
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