From: Phil Oester <kernel@linuxace.com>
Date: Sun, 1 Sep 2013 15:32:21 +0000 (-0700)
Subject: netfilter: xt_TCPMSS: correct return value in tcpmss_mangle_packet
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=1205e1fa615805c9efa97303b552cf445965752a;p=openwrt%2Fstaging%2Fblogic.git

netfilter: xt_TCPMSS: correct return value in tcpmss_mangle_packet

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@linuxace.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c
index 6113cc7efffc..cd24290f3b2f 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;