netdev - Re: alloc skb based on a given data buffer

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Message-Id: <1253339766.16125.1.camel@johannes.local>
Date:	Fri, 18 Sep 2009 22:56:06 -0700
From:	Johannes Berg <johannes@...solutions.net>
To:	David Miller <davem@...emloft.net>
Cc:	yi.zhu@...el.com, mel@....ul.ie, reinette.chatre@...el.com,
	elendil@...net.nl, Larry.Finger@...inger.net,
	linville@...driver.com, penberg@...helsinki.fi,
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	ipw3945-devel@...ts.sourceforge.net, akpm@...ux-foundation.org,
	cl@...ux-foundation.org, assaf.krauss@...el.com,
	mohamed.abbas@...el.com, netdev@...r.kernel.org
Subject: Re: alloc skb based on a given data buffer

On Tue, 2009-09-15 at 14:16 -0700, David Miller wrote:
> From: Johannes Berg <johannes@...solutions.net>
> Date: Tue, 15 Sep 2009 08:30:31 -0700
> 
> > Hold, mac80211 can't cope with that at this point for sw crypto and
> > possibly other things.
> 
> Then it should skb_linearize() at input, or similar.

Not all that much won then since that again means an order-2 allocation.
Fewer, certainly, as most packets are actually much smaller than that.

johannes

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