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xen-devel
RE: [Xen-devel] RE: VMQ support in pvops Netchannel2?
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To: |
Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Subject: |
RE: [Xen-devel] RE: VMQ support in pvops Netchannel2? |
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From: |
Paul Durrant <Paul.Durrant@xxxxxxxxxx> |
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Date: |
Tue, 27 Jul 2010 10:11:16 +0100 |
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en-US |
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en-US |
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Cc: |
Steven Smith <Steven.Smith@xxxxxxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Santos, Jose Renato G" <joserenato.santos@xxxxxx>, "Williams, Mitch A" <mitch.a.williams@xxxxxxxxx> |
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Tue, 27 Jul 2010 02:11:43 -0700 |
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[Xen-devel] RE: VMQ support in pvops Netchannel2? |
> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Ian Campbell
> Sent: 27 July 2010 09:20
> To: Jeremy Fitzhardinge
> Cc: Steven Smith; xen-devel@xxxxxxxxxxxxxxxxxxx; Ian Pratt;
> Williams, Mitch A; Santos, Jose Renato G
> Subject: Re: [Xen-devel] RE: VMQ support in pvops Netchannel2?
>
> On Mon, 2010-07-26 at 23:56 +0100, Jeremy Fitzhardinge wrote:
> > On 07/24/2010 10:18 PM, Santos, Jose Renato G wrote:
> > > Pasi
> > >
> > > Sorry for the delay in responding.
> > > My email filter stored your message on my folder for xen-devel
> which I am not reading very often recently.
> > >
> > > The latest version of netchannel2 I worked on was on Steven's
> nc2-2.6.27 kernel tree.
> > > That version does not have VMDq support since the Intel ixgbe
> driver in 2.6.27 does not have VMDq support.
> > > I am not sure what is Jeremy's plan to port that code to pvops.
> > > But I think that is the first step. After that we can work on
> getting VMDq support with Mitch's help.
> > > So I think Jeremy is probably the best person to give you an
> update on the plan to merge netechannel2 code into pvops.
> >
> > I'm not keen on carrying the nc2 codebase in its current state
> since it
> > is largely unmaintained, far from upstreamable and I haven't seen
> any
> > real demand for it.
>
> IMHO creating a second complete PV network infrastructure is a big
> mistake from both a usability and on going maintenance point of
> view.
>
> There is no fundamental reason why the key features of nc2 could not
> be
> implemented as optional features of the existing front/back drivers,
> negotiated via xenstore.
>
I'll be working on this in the near future. I plan to start by adding
negotiation of a new rx ring protocol to allow moving the grant copy to the
frontend.
Paul
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