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

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Date:	Tue, 08 Jul 2008 15:02:57 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	kaber@...sh.net
Cc:	buytenh@...tstofly.org, nico@....org, dale@...nsworth.org,
	akarkare@...vell.com, jdb@...x.dk, netdev@...r.kernel.org
Subject: Re: [PATCH 1/2][RFC] vlan: use pskb_copy() when inserting a vlan
 tag by hand

From: Patrick McHardy <kaber@...sh.net>
Date: Tue, 08 Jul 2008 22:15:55 +0200

> Lennert Buytenhek wrote:
> > 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.
> 
> 
> Great, thanks. The patch applies cleanly with or without the VLAN
> packet socket patches I sent today, so Dave can either just apply
> it together with your mv643xx_eth patch or I'll include it when
> sending the next VLAN update.

Patrick, want me to stuff this one into net-2.6?

BTW, there is a typo in the commit message, you say
"skb_cow_header()" which doesn't exist, you mean "skb_cow_head()".
But you got it right in the code :)
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