Re: [PATCH net-next] tcp: add ability to set a timestamp offset

[David Miller]

From: Andrey Vagin <avagin@xxxxxxxxxx>
Date: Mon, 11 Feb 2013 19:50:16 +0400

> If a TCP socket will get live-migrated from one box to another the
> timestamps (which are typically ON) will get screwed up -- the new
> kernel will generate TS values that has nothing to do with what they
> were on dump. The solution is to yet again fix the kernel and put a
> "timestamp offset" on a socket.
> 
> A socket offset is added in places where externally visible tcp
> timestamp option is parsed/initialized.
> 
> Connections in the SYN_RECV state are not supported, global
> tcp_time_stamp is used for them, because repair mode doesn't support
> this state. In a future it can be implemented by the similar way as for
> TIME_WAIT sockets.
> 
> For time-wait sockets offset is inhereted by a proper tcp_sock.
> 
> A per-socket offset can be set only for sockets in repair mode.

Series applied, thanks.
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