linux-kernel - Re: [PATCH V3 5/8] Enable cxgb3 to support zerocopy

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Message-ID: <1303333134.19336.70.camel@localhost.localdomain>
Date:	Wed, 20 Apr 2011 13:58:54 -0700
From:	Shirley Ma <mashirle@...ibm.com>
To:	Dimitris Michailidis <dm@...lsio.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 V3 5/8] Enable cxgb3 to support zerocopy

On Wed, 2011-04-20 at 13:52 -0700, Dimitris Michailidis wrote:
> The features handling has been reworked in net-next and patches like
> this 
> won't apply as the code you're patching has changed.  Also core code
> now 
> does a lot of the related work and you'll need to tell it what to do
> with 
> any new flags.
Ok, will do.

> What properties does a device or driver need to meet to set this flag?
> It 
> seems to be set a bit too unconditionally.  For example, does it work
> if one 
> disables scatter/gather? 

This flag can be ON when HIGHDMA and scatter/gather support. I will
modify the patch to make it conditionally.

thanks
Shirley

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