From: Florian Westphal <[email protected]>
Date: Thu, 1 Dec 2016 11:32:06 +0100
> jiffies based timestamps allow for easy inference of number of devices
> behind NAT translators and also makes tracking of hosts simpler.
>
> commit ceaa1fef65a7c2e ("tcp: adding a per-socket timestamp offset")
> added the main infrastructure that is needed for per-connection ts
> randomization, in particular writing/reading the on-wire tcp header
> format takes the offset into account so rest of stack can use normal
> tcp_time_stamp (jiffies).
>
> So only two items are left:
> - add a tsoffset for request sockets
> - extend the tcp isn generator to also return another 32bit number
> in addition to the ISN.
>
> Re-use of ISN generator also means timestamps are still monotonically
> increasing for same connection quadruple, i.e. PAWS will still work.
>
> Includes fixes from Eric Dumazet.
>
> Signed-off-by: Florian Westphal <[email protected]>
> Acked-by: Eric Dumazet <[email protected]>
> Acked-by: Yuchung Cheng <[email protected]>
Applied.
