netdev - Re: [PATCH net v2] geneve: initialize needed

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Message-ID: <20151223160111.GF20729@tuxdriver.com>
Date:	Wed, 23 Dec 2015 11:01:13 -0500
From:	"John W. Linville" <linville@...driver.com>
To:	Paolo Abeni <pabeni@...hat.com>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Pravin B Shelar <pshelar@...ira.com>,
	Jiri Benc <jbenc@...hat.com>, Jesse Gross <jesse@...ira.com>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>
Subject: Re: [PATCH net v2] geneve: initialize needed_headroom

On Wed, Dec 23, 2015 at 04:54:27PM +0100, Paolo Abeni wrote:
> Currently the needed_headroom field for the geneve device is left
> to the default value.
> 
> This patch set it to space required for basic geneve encapsulation,
> so that we can avoid the skb head re-allocation on xmit.
> 
> This give a 6% speedup for unsegment traffic on geneve tunnel.
> 
> v1 -> v2:
>   - add ETH_HLEN for the lower device to the needed headroom
> 
> Signed-off-by: Paolo Abeni <pabeni@...hat.com>
> Acked-by: Hannes Frederic Sowa <hannes@...essinduktion.org>

This time I really mean it... ;-)

Acked-by: John W. Linville <linville@...driver.com>

-- 
John W. Linville		Someday the world will need a hero, and you
linville@...driver.com			might be all we have.  Be ready.
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