netdev - Re: TCP_DEFER_ACCEPT is missing counter update

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Message-ID: <b2cc26e40910130108l20a27465ld8e84832c461c4fe@mail.gmail.com>
Date:	Tue, 13 Oct 2009 10:08:43 +0200
From:	Olaf van der Spek <olafvdspek@...il.com>
To:	netdev@...r.kernel.org
Subject: Re: TCP_DEFER_ACCEPT is missing counter update

On Tue, Oct 13, 2009 at 9:34 AM, Willy Tarreau <w@....eu> wrote:
>> We receive a pure ACK (wihout DATA).
>> We should receive exactly one such ACK.
>
> No, we will receive other ones because the socket remains in SYN_RECV
> and since the local system ignores this ACK, it will send a SYN-ACK
> again, triggering a new ACK from the client.

Why does it ignore the ACK? Just because that's the simplest
implementation of defer_accept?
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