linux-kernel - Re: [PATCH] tcp: initialize rcv

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Message-Id: <20130829.151205.2070859347984247313.davem@davemloft.net>
Date:	Thu, 29 Aug 2013 15:12:05 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	avagin@...nvz.org
Cc:	netdev@...r.kernel.org, gorcunov@...nvz.org,
	linux-kernel@...r.kernel.org, xemul@...allels.com,
	eric.dumazet@...il.com, kuznet@....inr.ac.ru, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org, kaber@...sh.net
Subject: Re: [PATCH] tcp: initialize rcv_tstamp for restored sockets

From: Andrey Vagin <avagin@...nvz.org>
Date: Tue, 27 Aug 2013 12:20:40 +0400

> From: Andrew Vagin <avagin@...nvz.org>
> 
> u32 rcv_tstamp;     /* timestamp of last received ACK */
> 
> Its value used in tcp_retransmit_timer, which closes socket
> if the last ack was received more then TCP_RTO_MAX ago.
> 
> Currently rcv_tstamp is initialized to zero and if tcp_retransmit_timer
> is called before receiving a first ack, the connection is closed.
> 
> This patch initializes rcv_tstamp to a timestamp, when a socket was
> restored.
> 
> Reported-by: Cyrill Gorcunov <gorcunov@...nvz.org>
> Signed-off-by: Andrey Vagin <avagin@...nvz.org>

Applied and queued up for -stable.
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