netdev - Re: [PATCH net] tcp: avoid multiple ssthresh reductions in on retransmit window

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Message-ID: <20140617122038.GA7275@unicorn.suse.cz>
Date:	Tue, 17 Jun 2014 14:20:38 +0200
From:	Michal Kubecek <mkubecek@...e.cz>
To:	Neal Cardwell <ncardwell@...gle.com>
Cc:	Yuchung Cheng <ycheng@...gle.com>,
	"David S. Miller" <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>
Subject: Re: [PATCH net] tcp: avoid multiple ssthresh reductions in on
 retransmit window

On Mon, Jun 16, 2014 at 08:44:04PM -0400, Neal Cardwell wrote:
> On Mon, Jun 16, 2014 at 8:25 PM, Yuchung Cheng <ycheng@...gle.com> wrote:
> > However Linux is inconsistent on the loss of a retransmission. It
> > reduces ssthresh (and cwnd) if this happens on a timeout, but not in
> > fast recovery (tcp_mark_lost_retrans). We should fix that and that
> > should help dealing with traffic policers.
> 
> Yes, great point!

Does it mean the patch itself would be acceptable if the reasoning in
its commit message was changed? Or would you prefer a different way to
unify the two situations?

                                                        Michal Kubecek

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