netdev - Re: [PATCH net-next 2/2] tcp: RFC7413 option support for Fast Open client

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Date:	Tue, 07 Apr 2015 18:40:02 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ycheng@...gle.com
Cc:	netdev@...r.kernel.org, Longinus00@...il.com, ncardwell@...gle.com
Subject: Re: [PATCH net-next 2/2] tcp: RFC7413 option support for Fast Open
 client

From: Yuchung Cheng <ycheng@...gle.com>
Date: Mon,  6 Apr 2015 14:37:27 -0700

> From: Daniel Lee <Longinus00@...il.com>
> 
> Fast Open has been using an experimental option with a magic number
> (RFC6994). This patch makes the client by default use the RFC7413
> option (34) to get and send Fast Open cookies.  This patch makes
> the client solicit cookies from a given server first with the
> RFC7413 option. If that fails to elicit a cookie, then it tries
> the RFC6994 experimental option. If that also fails, it uses the
> RFC7413 option on all subsequent connect attempts.  If the server
> returns a Fast Open cookie then the client caches the form of the
> option that successfully elicited a cookie, and uses that form on
> later connects when it presents that cookie.
> 
> The idea is to gradually obsolete the use of experimental options as
> the servers and clients upgrade, while keeping the interoperability
> meanwhile.
> 
> Signed-off-by: Daniel Lee <Longinus00@...il.com>
> Signed-off-by: Yuchung Cheng <ycheng@...gle.com>
> Signed-off-by: Neal Cardwell <ncardwell@...gle.com>

Applied.
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