Re: [PATCH/RFC net-next 1/2] devlink: expose port function commands to assign VFs to multiple netdevs

Jakub Kicinski
2023-02-07T02:42:39Z

On Mon, 6 Feb 2023 16:36:02 +0100 Simon Horman wrote:
> +VF assignment setup
> +---------------------------
> +In some cases, NICs could have multiple physical ports per PF. Users can assign VFs to
> +different ports.

Please make sure you run make htmldocs when changing docs,
this will warn.

> +- Get count of VFs assigned to physical port::
> +
> + $ devlink port show pci/0000:82:00.0/0
> + pci/0000:82:00.0/0: type eth netdev enp130s0np0 flavour physical port 0 splittable true lanes 4

Physical port has VFs? My knee jerk reaction is that allocating
resources via devlink is fine but this seems to lean a bit into
forwarding. How do other vendors do it? What's the mapping of VFs
to ports?

What do you suggest should happen when user enables switchdev mode?