[CRIU] [PATCH] tcp: block connections in both directions

Pavel Emelyanov xemul at parallels.com
Tue Aug 6 06:21:40 EDT 2013


On 08/06/2013 01:59 PM, Andrew Vagin wrote:
> The packet can be retransmited after dumping the tcp connect.  The first
> one is that the connection is blocked for only one direction. The second
> one is that TCP timers continue work during dumping and they can send
> packets. tcp_timestamp is saved for each tcp connections and then it’s
> restored. So if a packet is sent after dumping, its timestamps is
> saved by another side and this timestamp is sent back in the next packet
> as the tsecr parameter. If this packet is received after restoring, it
> looks like a packets from the future.
> 
> https://bugzilla.openvz.org/show_bug.cgi?id=2676
> Signed-off-by: Andrew Vagin <avagin at openvz.org>
> ---

Applied.

Is it all for the bug above, or will there be more stuff?


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