netdev - Re: [PATCH net-2.6] [TCP]: Congestion control API RTT sampling fix

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Message-Id: <20070615.151148.23012001.davem@davemloft.net>
Date:	Fri, 15 Jun 2007 15:11:48 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	shemminger@...ux-foundation.org
Cc:	ilpo.jarvinen@...sinki.fi, netdev@...r.kernel.org
Subject: Re: [PATCH net-2.6] [TCP]: Congestion control API RTT sampling fix

From: Stephen Hemminger <shemminger@...ux-foundation.org>
Date: Fri, 15 Jun 2007 07:32:55 -0700

> On Fri, 15 Jun 2007 12:30:12 +0300 (EEST)
> "Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi> wrote:
> 
> > Commit 164891aadf1721fca4dce473bb0e0998181537c6 broke RTT
> > sampling of congestion control modules. Inaccurate timestamps
> > could be fed to them without providing any way for them to
> > identify such cases. Previously RTT sampler was called only if
> > FLAG_RETRANS_DATA_ACKED was not set filtering inaccurate
> > timestamps nicely. In addition, the new behavior could give an
> > invalid timestamp (zero) to RTT sampler if only skbs with
> > TCPCB_RETRANS were ACKed. This solves both problems.
> > 
> > Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>
> >
> Yes, let's get this in 2.6.22

Agreed, patch applied, thanks everyone.
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