netdev - [PATCH 4/4] netfilter: xt_TCPMSS: correct return value in tcpmss_mangle

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Date:	Wed,  4 Sep 2013 15:00:25 +0200
From:	Pablo Neira Ayuso <pablo@...filter.org>
To:	netfilter-devel@...r.kernel.org
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 4/4] netfilter: xt_TCPMSS: correct return value in tcpmss_mangle_packet

From: Phil Oester <kernel@...uxace.com>

In commit b396966c4 (netfilter: xt_TCPMSS: Fix missing fragmentation handling),
I attempted to add safe fragment handling to xt_TCPMSS.  However, Andy Padavan
of Project N56U correctly points out that returning XT_CONTINUE in this
function does not work.  The callers (tcpmss_tg[46]) expect to receive a value
of 0 in order to return XT_CONTINUE.

Signed-off-by: Phil Oester <kernel@...uxace.com>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
 net/netfilter/xt_TCPMSS.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c
index 6113cc7..cd24290 100644
--- a/net/netfilter/xt_TCPMSS.c
+++ b/net/netfilter/xt_TCPMSS.c
@@ -60,7 +60,7 @@ tcpmss_mangle_packet(struct sk_buff *skb,
 
 	/* This is a fragment, no TCP header is available */
 	if (par->fragoff != 0)
-		return XT_CONTINUE;
+		return 0;
 
 	if (!skb_make_writable(skb, skb->len))
 		return -1;
-- 
1.7.10.4

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