Re: [RFC] vhost_mdev: add network control vq support

From: Jason Wang
Date: Wed Oct 30 2019 - 03:05:15 EST

On 2019/10/30 äå2:17, Tiwei Bie wrote:
> On Tue, Oct 29, 2019 at 06:51:32PM +0800, Jason Wang wrote:
>> On 2019/10/29 äå6:17, Tiwei Bie wrote:
>>> This patch adds the network control vq support in vhost-mdev.
>>> A vhost-mdev specific op is introduced to allow parent drivers
>>> to handle the network control commands come from userspace.
>> Probably work for userspace driver but not kernel driver.
> Exactly. This is only for userspace.
> I got your point now. In virtio-mdev kernel driver case,
> the ctrl-vq can be special as well.

Then maybe it's better to introduce vhost-mdev-net on top?

Looking at the other type of virtio device:

- console have two control virtqueues when multiqueue port is enabled

- SCSI has controlq + eventq

- GPU has controlq

- Crypto device has one controlq

- Socket has eventq