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netfilter: ipt_REJECT: avoid touching dst ref
author
Eric Dumazet
<eric.dumazet@gmail.com>
Mon, 5 Jul 2010 08:40:09 +0000
(10:40 +0200)
committer
Patrick McHardy
<kaber@trash.net>
Mon, 5 Jul 2010 08:40:09 +0000
(10:40 +0200)
We can avoid a pair of atomic ops in ipt_REJECT send_reset()
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
net/ipv4/netfilter/ipt_REJECT.c
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diff --git
a/net/ipv4/netfilter/ipt_REJECT.c
b/net/ipv4/netfilter/ipt_REJECT.c
index 3d0e064bab54b6f0c40e8a7f6d753e358cff5d49..b254dafaf4294548b7d36d9b54ce29832f8658e3 100644
(file)
--- a/
net/ipv4/netfilter/ipt_REJECT.c
+++ b/
net/ipv4/netfilter/ipt_REJECT.c
@@
-110,7
+110,7
@@
static void send_reset(struct sk_buff *oldskb, int hook)
addr_type = RTN_LOCAL;
/* ip_route_me_harder expects skb->dst to be set */
- skb_dst_set
(nskb, dst_clone(skb_dst(oldskb)
));
+ skb_dst_set
_noref(nskb, skb_dst(oldskb
));
if (ip_route_me_harder(nskb, addr_type))
goto free_nskb;
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