This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


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

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.


Xen-devel mailing list