netdev - Re: [PATCH 1/7] [TCP]: Add bytes_acked (ABC) clearing to FRTO too

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Date:	Thu, 11 Oct 2007 17:32:40 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	ilpo.jarvinen@...sinki.fi
Cc:	netdev@...r.kernel.org, takano@...-inc.co.jp
Subject: Re: [PATCH 1/7] [TCP]: Add bytes_acked (ABC) clearing to FRTO too

From: "Ilpo_Järvinen" <ilpo.jarvinen@...sinki.fi>
Date: Thu, 11 Oct 2007 14:41:01 +0300

> I was reading tcp_enter_loss while looking for Cedric's bug and
> noticed bytes_acked adjustment is missing from FRTO side.
> 
> Since bytes_acked will only be used in tcp_cong_avoid, I think
> it's safe to assume RTO would be spurious. During FRTO cwnd
> will be not controlled by tcp_cong_avoid and if FRTO calls for
> conventional recovery, cwnd is adjusted and the result of wrong
> assumption is cleared from bytes_acked. If RTO was in fact
> spurious, we did normal ABC already and can continue without
> any additional adjustments.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>

Applied.
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