On Thu, Feb 22, 2018 at 10:11 AM, Jiri Pirko [off-list ref] wrote:

Wed, Feb 21, 2018 at 09:57:09PM CET, alexander.duyck@gmail.com wrote:

quoted

The signaling isn't too much of an issue since we can just tweak the
link state of the VF or virtio manually to report the link up or down
prior to the hot-plug. Now that we are on the same page with the team0

Oh, so you just do "ip link set vfrepresentor down" in the host.
That makes sense. I'm pretty sure that this is not implemented for all
drivers now.

mlx5 supports that, on the representor close ndo we take the VF link
operational v-link down

We should probably also put into the picture some/more aspects
from the host side of things. The provisioning of the v-switch now
have to deal with two channels going into the VM, the PV (virtio)
one and the PT (VF) one.

This should probably boil down to apply teaming/bonding between
the VF representor and a PV backend device, e.g TAP.