netdev - Re: [PATCH] net: sctp: confirm route during forward progress

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Message-ID: <20130709162323.GB955@hmsreliant.think-freely.org>
Date:	Tue, 9 Jul 2013 12:23:23 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	Daniel Borkmann <dborkman@...hat.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-sctp@...r.kernel.org, vyasevich@...il.com
Subject: Re: [PATCH] net: sctp: confirm route during forward progress

On Tue, Jul 09, 2013 at 04:17:04PM +0200, Daniel Borkmann wrote:
> This fix has been proposed originally by Vlad Yasevich. He says:
> 
>   When SCTP makes forward progress (receives a SACK that acks new chunks,
>   renegs, or answeres 0-window probes) or when HB-ACK arrives, mark
>   the route as confirmed so we don't unnecessarily send NUD probes.
> 
> Having a simple SCTP client/server that exchange data chunks every 1sec,
> without this patch ARP requests are sent periodically every 40-60sec.
> With this fix applied, an ARP request is only done once right at the
> "session" beginning. Also, when clearing the related ARP cache entry
> manually during the session, a new request is correctly done. I have
> only "backported" this to net-next and tested that it works, so full
> credit goes to Vlad.
> 
> Signed-off-by: Vlad Yasevich <vyasevich@...il.com>
> Signed-off-by: Daniel Borkmann <dborkman@...hat.com>
Acked-by: Neil Horman <nhorman@...driver.com>

> 
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