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List: linux-sctp
Subject: Re: [PATCH] net: sctp: confirm route during forward progress
From: David Miller <davem () davemloft ! net>
Date: 2013-07-09 19:50:22
Message-ID: 20130709.125022.1233764359019010136.davem () davemloft ! net
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From: Neil Horman <nhorman@tuxdriver.com>
Date: Tue, 9 Jul 2013 12:23:23 -0400
> 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@gmail.com>
>> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
> Acked-by: Neil Horman <nhorman@tuxdriver.com>
Applied, thanks.
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