From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Mon, 5 Jul 2010 08:40:09 +0000 (+0200)
Subject: netfilter: ipt_REJECT: avoid touching dst ref
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b13b7125e4d10ce39818eec1bcb2d9777d29475f;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

netfilter: ipt_REJECT: avoid touching dst ref

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>
---

diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index 3d0e064bab54..b254dafaf429 100644
--- 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;