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Date:	Tue, 28 Feb 2012 16:28:16 +0800
From:	roy.qing.li@...il.com
To:	netdev@...r.kernel.org
Subject: [PATCH 1/2] ipv6: fix mss when it is bigger than IPV6_MAXPLEN - sizeof(struct tcphdr)

From: RongQing.Li <roy.qing.li@...il.com>

When mss is bigger than IPV6_MAXPLEN - sizeof(struct tcphdr),
set mss to IPV6_MAXPLEN - sizeof(struct tcphdr), not IPV6_MAXPLEN.

Signed-off-by: RongQing.Li <roy.qing.li@...il.com>
---
 net/ipv6/route.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 92be12b..42cc16c 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1054,7 +1054,7 @@ static unsigned int ip6_default_advmss(const struct dst_entry *dst)
 	 * rely only on pmtu discovery"
 	 */
 	if (mtu > IPV6_MAXPLEN - sizeof(struct tcphdr))
-		mtu = IPV6_MAXPLEN;
+		mtu = IPV6_MAXPLEN - sizeof(struct tcphdr);
 	return mtu;
 }
 
-- 
1.7.1

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