From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH 2/3 resend] TCP_DEFER_ACCEPT updates - dont retxmt
 synack
Date: Fri, 21 Mar 2008 16:29:50 -0700 (PDT)
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From: Patrick McManus <mcmanus@ducksong.com>
Date: Thu, 20 Mar 2008 18:55:55 -0400

> commit 95dea62ad7004a1de84e1f38c1b5243e1cb0d554
> Author: Patrick McManus <mcmanus@ducksong.com>
> Date:   Sat Feb 23 15:59:22 2008 -0500
> 
>     a socket in LISTEN that had completed its 3 way handshake, but not notified
>     userspace because of SO_DEFER_ACCEPT, would retransmit the already
>     acked syn-ack during the time it was waiting for the first data byte
>     from the peer.
>     
>     Signed-off-by: Patrick McManus <mcmanus@ducksong.com>
>     Acked-by: Eric Dumazet <dada1@cosmosbay.com>

Applied to net-2.6.26