Comment 29 for bug 1912460

Reviewed: https://review.opendev.org/c/openstack/neutron/+/816802
Committed: https://opendev.org/openstack/neutron/commit/5765186516ae6af3477fc1c1cdd0367e8c878189
Submitter: "Zuul (22348)"
Branch: master

commit 5765186516ae6af3477fc1c1cdd0367e8c878189
Author: LIU Yulong <email address hidden>
Date: Thu Sep 2 16:22:03 2021 +0800

    Support pps limitation for openvswitch agent

    Add packet rate limit rule to the openvswitch QoS
    driver SUPPORTED_RULES list. This patch adds the
    ability to limit neutron port packet I/O rate. We
    will leverage the ovs meter to achieve the limitation.

    The meter action is only supoorted when datapath is
    in user mode (with ovs >= 2.7) or ovs kernel datapath with
    kernel version >= 4.15 (and ovs >= 2.10).

    [1] https://docs.openvswitch.org/en/latest/faq/releases/

    Partially-Implements: bp/packet-rate-limit
    Related-Bug: #1938966
    Related-Bug: #1912460
    Change-Id: Ib6341ad539afc9f94f1783a721cf5f793ccdc7d8