netdev - RE: [RFC 2/2] ethtool: Add support for DMA Coalescing feature config to ethtool.

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Message-ID: <1309457179.2701.6.camel@bwh-desktop>
Date:	Thu, 30 Jun 2011 19:06:19 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	"Wyborny, Carolyn" <carolyn.wyborny@...el.com>
Cc:	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [RFC 2/2] ethtool: Add support for DMA Coalescing feature
 config to ethtool.

On Thu, 2011-06-30 at 10:52 -0700, Wyborny, Carolyn wrote:
[...]
> >You may wish to propose a new command structure that covers both IRQ and
> >DMA moderation.  They seem to be related, since DMA cannot be delayed
> >longer than the corresponding IRQ.  We are currently lacking a way to
> >specify different IRQ moderation for multiqueue devices where the queues
> >are not all used in the same way.
> >
> >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.
> 
> I will try to do this.  Confirming you are suggesting a replacement or
> an alternate for the current -c/-C coalesce settings with perhaps some
> room reserved for some future coalescing type features and enable
> settings per queue?
[...]

Yes.  I'm not insisting that you must do this instead of just defining
the operations for DMA coalescing, but it would be helpful.

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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