RE: [PATCH net-next 00/13] Add mlx5 subfunction support

[Parav Pandit]

> From: Jakub Kicinski <k...@kernel.org>
> Sent: Friday, November 20, 2020 7:05 AM
> 
> On Wed, 18 Nov 2020 22:12:22 -0800 Saeed Mahameed wrote:
> > > Right, devices of other subsystems are fine, I don't care.
> >
> > But a netdev will be loaded on SF automatically just through the
> > current driver design and modularity, since SF == VF and our netdev is
> > abstract and doesn't know if it runs on a PF/VF/SF .. we literally
> > have to add code to not load a netdev on a SF. why ? :/
> 
> A netdev is fine, but the examples so far don't make it clear (to me) if it's
> expected/supported to spawn _multiple_ netdevs from a single "vdpa
> parentdev".
We do not create Netdev from vdpa parentdev.
>From vdpa parentdev, only vdpa device(s) are created which is 'struct device' 
>residing in /sys/bus/vdpa/<device>.
Currently such vdpa device is already created on mlx5_vpa.ko driver load, 
however user has no way to inspect, stats, get/set features of this device, 
hence the vdpa tool.