netdev - Re: [PATCH 1/7] dccp: Integration of dynamic feature activation

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Date:	Mon, 08 Dec 2008 01:15:35 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	gerrit@....abdn.ac.uk
Cc:	dccp@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 1/7] dccp: Integration of dynamic feature activation -
 part 1 (socket setup)

From: Gerrit Renker <gerrit@....abdn.ac.uk>
Date: Sat,  6 Dec 2008 17:40:51 +0100

> This first patch out of three replaces the hardcoded default settings with
> initialisation code for the dynamic feature negotiation.
> 
> The patch also ensures that the client feature-negotiation queue is flushed
> only when entering the OPEN state.
> 
> Since confirmed Change options are removed as soon as they are confirmed
> (in the DCCP-Response), this ensures that Confirm options are retransmitted.
> 
> Note on retransmitting Confirm options:
> ---------------------------------------
> Implementation experience showed that it is necessary to retransmit Confirm
> options. Thanks to Leandro Melo de Sales who reported a bug in an earlier
> revision of the patch set, resulting from not retransmitting these options.
> 
> As long as the client is in PARTOPEN, it needs to retransmit the Confirm
> options for the Change options received on the DCCP-Response from the server.
> 
> Otherwise, if the packet containing the Confirm options gets dropped in the
> network, the connection aborts due to undefined feature negotiation state.
> 
> 
> Signed-off-by: Gerrit Renker <gerrit@....abdn.ac.uk>
> Acked-by: Ian McDonald <ian.mcdonald@...di.co.nz>

Applied.
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