Commit 7ed5c5ae authored Aug 16, 2013 by Andrey Vagin Committed by David S. Miller Aug 20, 2013

tcp: set timestamps for restored skb-s



When the repair mode is turned off, the write queue seqs are
updated so that the whole queue is considered to be 'already sent.

The "when" field must be set for such skb. It's used in tcp_rearm_rto
for example. If the "when" field isn't set, the retransmit timeout can
be calculated incorrectly and a tcp connected can stop for two minutes
(TCP_RTO_MAX).

Acked-by: Pavel Emelyanov <xemul@parallels.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>

parent 49baea88

net/ipv4/tcp.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -1120,6 +1120,13 @@ new_segment:
		if (!skb)
		goto wait_for_memory;

		/*
		* All packets are restored as if they have
		* already been sent.
		*/
		if (tp->repair)
		TCP_SKB_CB(skb)->when = tcp_time_stamp;

		/*
		* Check whether we can use HW checksum.
		*/

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