netdev - Re: [PATCH net-next 2/2] flow_dissector: add tipc support

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Date:	Mon, 26 Jan 2015 17:04:41 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	erik.hugne@...csson.com
Cc:	richard.alpe@...csson.com, netdev@...r.kernel.org,
	jon.maloy@...csson.com, ying.xue@...driver.com,
	tipc-discussion@...ts.sourceforge.net
Subject: Re: [PATCH net-next 2/2] flow_dissector: add tipc support

From: <erik.hugne@...csson.com>
Date: Thu, 22 Jan 2015 17:10:32 +0100

> From: Erik Hugne <erik.hugne@...csson.com>
> 
> The flows are hashed on the sending node address, which allows us
> to spread out the TIPC link processing to RPS enabled cores. There
> is no point to include the destination address in the hash as that
> will always be the same for all inbound links. We have experimented
> with a 3-tuple hash over [srcnode, sport, dport], but this showed to
> give slightly lower performance because of increased lock contention
> when the same link was handled by multiple cores.
> 
> Signed-off-by: Ying Xue <ying.xue@...driver.com>
> Signed-off-by: Erik Hugne <erik.hugne@...csson.com>
> Reviewed-by: Jon Maloy <jon.maloy@...csson.com>

Applied.
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