Comment 14 for bug 1821058

Reviewed: https://review.opendev.org/c/openstack/neutron/+/826512
Committed: https://opendev.org/openstack/neutron/commit/08bdc4ded10baba932c5690f0c567e5bc38f0ff3
Submitter: "Zuul (22348)"
Branch: master

commit 08bdc4ded10baba932c5690f0c567e5bc38f0ff3
Author: Rodolfo Alonso Hernandez <email address hidden>
Date: Wed Jan 26 17:30:01 2022 +0000

    Add "bound_drivers" information to port "vif_details"

    This new parameter "bound_drivers" is a dictionary with the binding
    levels and the driver name. E.g.:
      port['vif_details']['bound_drivers'] = {'0': 'openvswitch'}
      port['vif_details']['bound_drivers'] = {'0': 'ovn'}

    If the port is not bound, this key won't be present in "vif_details".
    This information is important for Nova, along with the VIF type, to
    adequate the port plugin strategy or to know what kind of plugin
    events are expected; currently, depending on the driver and the
    connection type, Neutron sends a different set of vif-plugged events.
    This is specially critical during live migration process, where the
    network communication should be halted as little as possible.

    Related-Bug: #1821058

    Change-Id: I1c42fa4f44cc2311e874b2b9bf2bd40ffd142e91