netdev - Re: [PATCH] RFC2988bis + taking RTT sample from 3WHS for the passive open side

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Message-ID: <20110608211639.GA2876@nuttenaction>
Date:	Wed, 8 Jun 2011 23:16:39 +0200
From:	Hagen Paul Pfeifer <hagen@...u.net>
To:	Jerry Chu <hkchu@...gle.com>
Cc:	David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>, tsunanet@...il.com,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] RFC2988bis + taking RTT sample from 3WHS for the passive
 open side

Hello Jerry

* Jerry Chu | 2011-06-08 11:04:22 [-0700]:

>+       /* Cut cwnd down to 1 per RFC5681 if SYN or SYN-ACK has been
>+        * retransmitted. In light of RFC2988bis' more aggressive 1sec
>+        * initRTO, we only reset cwnd when more than 1 SYN/SYN-ACK
>+        * retransmission has occurred.
>+        */
>+       if (tp->total_retrans > 1)
>+               tp->snd_cwnd = 1;
>+       else
>+               tp->snd_cwnd = tcp_init_cwnd(tp, dst);

Is this behavior somewhere documented? In RFC2988bis I cannot find something
similar.


Cheers, Hagen
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