netdev - Re: [PATCH 1/2][RFC] vlan: use pskb_copy() when inserting a vlan tag by hand

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Date:	Tue, 8 Jul 2008 21:33:51 +0200
From:	Lennert Buytenhek <buytenh@...tstofly.org>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	Nicolas Pitre <nico@....org>,
	Dale Farnsworth <dale@...nsworth.org>,
	Ashish Karkare <akarkare@...vell.com>,
	Jesper Dangaard Brouer <jdb@...x.dk>, netdev@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH 1/2][RFC] vlan: use pskb_copy() when inserting a vlan tag by hand

On Tue, Jul 08, 2008 at 08:50:09PM +0200, Patrick McHardy wrote:

> commit 9381fc4a49cb8b75d5ff38e4f5d14d7e135adc4c
> Author: Patrick McHardy <kaber@...sh.net>
> Date:   Tue Jul 8 19:56:17 2008 +0200
> 
>     vlan: avoid header copying and linearisation where possible

That gives me:

- 2.6.26-rc9 + [1] + [2] + this patch: ~75 sec, 13.6 MiB/s

So it's almost back to the non-VLAN case.


[1] "vlan 01/07: fix network_header/mac_header adjustments",
    http://marc.info/?l=linux-netdev&m=121543468509250&w=2

[2] "mv643xx_eth: enable hardware TX checksumming with vlan tags",
    http://marc.info/?l=linux-netdev&m=121546423330743&w=2
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