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Date:	Tue, 12 Aug 2014 15:16:25 -0700 (PDT)
From:	David Miller <>
Subject: Re: [PATCH net 1/2] net-timestamp: fix missing ACK timestamp

From: Willem de Bruijn <>
Date: Tue, 12 Aug 2014 14:53:16 -0400

> ACK timestamps are generated in tcp_clean_rtx_queue. The TSO datapath
> can break out early, causing the timestamp code to be skipped. Move
> the code up before the break.
> Reported-by: David S. Miller <>
> Also fix a boundary condition: tp->snd_una is the next unacknowledged
> byte and between tests inclusive (a <= b <= c), so generate a an ACK
> timestamp if (prior_snd_una <= tskey <= tp->snd_una - 1).
> Signed-off-by: Willem de Bruijn <>

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