netdev - Re: [PATCH V5 2/6 net-next] netdevice.h: Add zero-copy flag in netdevice

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Message-ID: <1305575253.2885.28.camel@bwh-desktop>
Date:	Mon, 16 May 2011 20:47:33 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Shirley Ma <mashirle@...ibm.com>
Cc:	David Miller <davem@...emloft.net>, mst@...hat.com,
	Eric Dumazet <eric.dumazet@...il.com>,
	Avi Kivity <avi@...hat.com>, Arnd Bergmann <arnd@...db.de>,
	netdev@...r.kernel.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH V5 2/6 net-next] netdevice.h: Add zero-copy flag in
 netdevice

On Mon, 2011-05-16 at 12:38 -0700, Shirley Ma wrote:
> On Mon, 2011-05-16 at 20:35 +0100, Ben Hutchings wrote:
> > Sorry, bit 31 is taken.  You get the job of turning features into a
> > wider bitmap.
> 
> :) will do it.

Bear in mind that feature masks are manipulated in many different
places.  This is not a simple task.

See previous discussion at:
http://thread.gmane.org/gmane.linux.network/193284
and especially:
http://thread.gmane.org/gmane.linux.network/193284/focus=193332

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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