netdev - Re: [PATCH v4 3/3] tcp: early retransmit: delayed fast retransmit

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Message-Id: <20120502.205637.19625325390404925.davem@davemloft.net>
Date:	Wed, 02 May 2012 20:56:37 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ycheng@...gle.com
Cc:	ilpo.jarvinen@...sinki.fi, ncardwell@...gle.com,
	nanditad@...gle.com, netdev@...r.kernel.org
Subject: Re: [PATCH v4 3/3] tcp: early retransmit: delayed fast retransmit

From: Yuchung Cheng <ycheng@...gle.com>
Date: Wed,  2 May 2012 16:30:04 -0700

> Implementing the advanced early retransmit (sysctl_tcp_early_retrans==2).
> Delays the fast retransmit by an interval of RTT/4. We borrow the
> RTO timer to implement the delay. If we receive another ACK or send
> a new packet, the timer is cancelled and restored to original RTO
> value offset by time elapsed.  When the delayed-ER timer fires,
> we enter fast recovery and perform fast retransmit.
> 
> Signed-off-by: Yuchung Cheng <ycheng@...gle.com>

Applied.
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