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Message-ID: <4A774147.8090207@novell.com>
Date: Mon, 03 Aug 2009 15:57:59 -0400
From: Gregory Haskins <ghaskins@...ell.com>
To: Stephen Hemminger <shemminger@...tta.com>
CC: linux-kernel@...r.kernel.org,
alacrityvm-devel@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: Re: [PATCH 7/7] venet: add scatter-gather/GSO support
Stephen Hemminger wrote:
> On Mon, 03 Aug 2009 13:18:07 -0400
> Gregory Haskins <ghaskins@...ell.com> wrote:
>
>> + struct {
>> + int sg:1;
>> + int tso:1;
>> + int ufo:1;
>> + int tso6:1;
>> + int ecn:1;
>> + } flags;
>
> Why do you have to shadow flags that are already available in net_device?
> It is bad design to replicate state in a device driver. The problem
> with replicated state is that it has to be updated in both places.
>
Ya, you are right. I think the rationale was that the flags were "hw"
state, whereas dev->features was software state. But thinking about it
after you comments, I don't think it makes much difference either way.
I will just have the negcap() function set the features directly in v2.
Kind Regards,
-Greg
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