From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] tcp: missing check ACK flag of received segment in
 FIN-WAIT-2 state
Date: Thu, 25 Jun 2009 20:09:40 -0700 (PDT)
Message-ID: <20090625.200940.99884468.davem@davemloft.net>
References: <4A43356B.7060005@cn.fujitsu.com>
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From: Wei Yongjun <yjwei@cn.fujitsu.com>
Date: Thu, 25 Jun 2009 16:29:31 +0800

> RFC0793 defined that in FIN-WAIT-2 state if the ACK bit is off drop
> the segment and return[Page 72]. But this check is missing in function
> tcp_timewait_state_process(). This cause the segment with FIN flag but
> no ACK has two diffent action:
...
> This patch fixed the problem.
> 
> Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>

Patch applied, thank you.