netdev - Re: [RFC PATCHv5 1/5] [TCP]: Add highest_sack seqno, points to globally highest SACK

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Date:	Sat, 24 Mar 2007 21:04:28 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	ilpo.jarvinen@...sinki.fi
Cc:	netdev@...r.kernel.org
Subject: Re: [RFC PATCHv5 1/5] [TCP]: Add highest_sack seqno, points to
 globally highest SACK

From: "Ilpo_Järvinen" <ilpo.jarvinen@...sinki.fi>
Date: Fri, 16 Mar 2007 20:41:02 +0200

> It is guaranteed to be valid only when !tp->sacked_out. In most
> cases this seqno is available in the last ACK but there is no
> guarantee for that. The new fast recovery loss marking algorithm
> needs this as entry point.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>

Patch applied, thanks Ilpo.

It's a shame we keep around multiple values which represent very
related values.  For example, this new seqno could be computed
using "fackets_out" if we knew also how many holes there were.
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