tcp: initialize rcv_tstamp for restored sockets
authorAndrew Vagin <avagin@openvz.org>
Tue, 27 Aug 2013 08:20:40 +0000 (12:20 +0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 14 Sep 2013 13:54:56 +0000 (06:54 -0700)
commit6f198dcab737db9335f1f4c7d97f801e0d5de186
tree1d1713e05cc6d9432398487bb85c0813b9bd14b8
parentf2e39b5ea18377e079ab44323d9c8653a15fc5d6
tcp: initialize rcv_tstamp for restored sockets

[ Upstream commit c7781a6e3c4a9a17e144ec2db00ebfea327bd627 ]

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@openvz.org>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/ipv4/tcp_output.c