linux-kernel - [37/59] act_nat: the checksum of ICMP doesnt have pseudo header

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Date:	Tue, 24 Aug 2010 15:24:49 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Changli Gao <xiaosuo@...il.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>
Subject: [37/59] act_nat: the checksum of ICMP doesnt have pseudo header

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------


From: Changli Gao <xiaosuo@...il.com>

[ Upstream commit 3a3dfb062c2e086c202d34f09ce29634515ad256 ]

after updating the value of the ICMP payload, inet_proto_csum_replace4() should
be called with zero pseudohdr.

Signed-off-by: Changli Gao <xiaosuo@...il.com>
Acked-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 net/sched/act_nat.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -240,7 +240,7 @@ static int tcf_nat(struct sk_buff *skb,
 			iph->saddr = new_addr;
 
 		inet_proto_csum_replace4(&icmph->checksum, skb, addr, new_addr,
-					 1);
+					 0);
 		break;
 	}
 	default:


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