netdev - Re: [PATCH RESEND net-2.6] [TCP] FRTO: Add missing ECN CWR sending to one of the responses

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Date:	Sat, 19 May 2007 13:56:32 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	ilpo.jarvinen@...sinki.fi
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH RESEND net-2.6] [TCP] FRTO: Add missing ECN CWR sending
 to one of the responses

From: "Ilpo_Järvinen" <ilpo.jarvinen@...sinki.fi>
Date: Fri, 18 May 2007 12:15:21 +0300 (EEST)

> The conservative spurious RTO response did not queue CWR even
> though the sending rate was lowered. Whenever reduction happens
> regardless of reason, CWR should be sent (forgetting to send it
> is not very fatal though).
> 
> A better approach would be to queue CWR when one of the sending
> rate reducing responses (rate-halving one or this conservative
> response) is used already at RTO. Doing that would allow CWR to
> be sent along with the two new data segments that are sent
> during FRTO. However, it's a bit "racy" because userland could
> tune the response sysctl to a more aggressive one in between.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>

Applied, thanks Ilpo.
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