RFC - Tap io_uring PMD

[Morten Brørup]

> From: Maxime Coquelin [mailto:maxime.coquelin at redhat.com]
> Sent: Wednesday, 6 November 2024 08.47
> 
> Hi Stephen,
> 
> On 10/30/24 22:56, Stephen Hemminger wrote:
> > The current tap device is slow both due to architectural choices and
> the
> > overhead of Linux system calls. I am exploring a how to fix that but
> some
> > of the choices require some tradeoffs. Which leads to some open
> questions:

[...]

> 
> Why not just use Virtio-user PMD with Vhost-kernel backend [0]?
> Are there any missing features that io_uring can address?
> 
> Regards,
> Maxime
> 
> [0]:
> http://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html

Thanks for the pointer, Maxime.

After taking a look at it, I think this is exactly what we were looking for!