Comment 3 for bug 1814882

Reviewed: https://review.openstack.org/635170
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=f651ebc0ceeca70aba8c0f7e5054f598e491c848
Submitter: Zuul
Branch: master

commit f651ebc0ceeca70aba8c0f7e5054f598e491c848
Author: Stephen Finucane <email address hidden>
Date: Wed Feb 6 14:00:51 2019 +0000

    Don't set bandwidth limits for vhostuser, hostdev interfaces

    'tc' [1] is used for rate limiting in libvirt. This is suitable for tap
    devices but not for the sockets used by vhostuser interface or for
    physical devices; rate limiting for these interfaces must be done in the
    vSwitch or via the interface itself. For this reason, libvirt explicitly
    marks these interfaces, along with some other interfaces types, as not
    supporting bandwidth limiting [2]. Given that there is no reason to be
    setting the bandwidth-related attributes on vhostuser or hostdev
    interfaces, we should stop doing it.

    [1] http://man7.org/linux/man-pages/man8/tc.8.html
    [2] https://github.com/libvirt/libvirt/blob/568a41722/src/conf/netdev_bandwidth_conf.h#L38

    Change-Id: Id57e4c149616fe0896e80fca322ece79ec3bfd69
    Closes-Bug: #1814882