Re: [Xen-devel] [PATCH 0/4] Support accelerated network plugin modules

[Kieran Mansley <kmansley@xxxxxxxxxxxxxx>]

On Wed, 2007-05-09 at 14:26 +0300, Muli Ben-Yehuda wrote:
> On Wed, May 09, 2007 at 07:37:17PM +1000, Herbert Xu wrote:
> > Kieran Mansley <kmansley@xxxxxxxxxxxxxx> wrote:
> > > This series of patches adds support to netfront and netback to allow
> > > accelerated drivers to plug in and support a fast path for network
> > > traffic.  This is designed to allow use of virtualisable "smart" NICs
> > > directly from domU, with help/control from dom0.  Experiments with
> > > Solarflare hardware have shown a doubling in network performance when
> > > using this approach on 10Gbps networks, compared to the traditional
> > > network path through netfront/netback.  i.e. Performance from domU
> > > approaches that normally seen in dom0.
> > 
> > Could you post some examples of how these hooks are actually used by
> > your driver? Without them it's hard for me to assess whether these
> > hooks are appropriate.
> 
> Seconded.

No problem.  I'll knock up a pair of simple dummy drivers to use these
as an example, and I can also provide our full version if you prefer - I
hesitated from including that to avoid confusion about what was being
suggested as a patch at the moment.

> > Also, since netfront may be merged into upstream Linux soon, please
> > cc these patches to netdev@xxxxxxxxxxxxxxx so folks there can also
> > comment.
> 
> Also seconded.

I'll repost the patches with everyone's suggested modifications together
with the example drivers, and CC them.

Kieran


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