Comment 11 for bug 1942329

Reviewed: https://review.opendev.org/c/openstack/neutron/+/829247
Committed: https://opendev.org/openstack/neutron/commit/4e78aaa694683f812d091a794bd140a7d363dd9b
Submitter: "Zuul (22348)"
Branch: master

commit 4e78aaa694683f812d091a794bd140a7d363dd9b
Author: Balazs Gibizer <email address hidden>
Date: Tue Feb 15 13:56:34 2022 +0100

    Update port MAC from binding profile for PFs

    Today Nova updates the mac_address of a direct-physical port to reflect
    the MAC address of the physical device the port is bound to. But this
    can only be done before the port is bound. However during migration Nova
    is not able to update the MAC when the port is bound to a different
    physical device on the destination host.

    This patch extends port binding logic for direct-physical ports to allow
    providing the MAC address of the physical device via the binding profile.
    If it is provided then Neutron overwrites the value of the mac_address
    field of the port with the value from the active binding profile.

    Also when the port is being unbound or the MAC address is removed from
    the active binding porfile then neutron resets the mac_address field of
    port to a generated MAC to avoid duplicated MAC issues when another port
    is being bound to the same physical device.

    The shim API extension for this change is being proposed in
    I54b4c85ffc4856fba7ad5e9e29f77f74815e1275 in neutron-lib.

    Depends-On: https://review.opendev.org/c/openstack/neutron-lib/+/831935

    Closes-Bug: #1942329

    Change-Id: Ib0638f5db69cb92daf6932890cb89e83cf84f295