[RFE] Add new config option to enable IGMP snooping in ovs

[Slawek Kaplonski]

This is proposal to add new config option to OVS agent's section to enable multicast snooping in br-int by neutron-ovs-agent.
This option can be useful for users who wants to have support for multicast traffic which will be treated as "real" multicast instead of broadcast delivered to all ports.

Some details about this are described in https://gist.github.com/djoreilly/a22ca4f38396e8867215fca0ad67fa28

From neutron's point of view it would required only config option in neutron-ovs-agent and some code changes on agent's side.
No any changes in API or DB layers are required by that RFE.

[Miguel Lavalle (minsel)]

Let's discuss it in the drivers meeting

[Miguel Lavalle (minsel)]

This RFE was approved during today's Neutron drivers meeting

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/682634

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/682634
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=5b341150e29137e3dab671453a9a6c0908e74585
Submitter: Zuul
Branch: master

commit 5b341150e29137e3dab671453a9a6c0908e74585
Author: Slawek Kaplonski <email address hidden>
Date: Tue Sep 17 14:20:31 2019 +0200

    Add "igmp_snooping_enable" config option for OVS agent

    Neutron-ovs-agent can now enable IGMP snooping in integration bridge
    if config option "igmp_snooping_enable" in OVS section in config will
    be set to True.
    It will also set mcast-snooping-disable-flood-unregistered=true
    so flooding of multicast packets to all unregistered ports will be
    disabled also.
    Both changes are applied on integration bridge.

    Change-Id: I12f4030a35d10d1715d3b4bfb3ed5efb9aa28f2b
    Closes-Bug: #1840136

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron 16.0.0.0b1 development milestone.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/train
Review: https://review.opendev.org/735353

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/stein
Review: https://review.opendev.org/735354

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/rocky
Review: https://review.opendev.org/735355

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/queens
Review: https://review.opendev.org/735356

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/735353
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=b5d67929b7dc1b71a4bf8976453872c93d35b22a
Submitter: Zuul
Branch: stable/train

commit b5d67929b7dc1b71a4bf8976453872c93d35b22a
Author: Slawek Kaplonski <email address hidden>
Date: Tue Sep 17 14:20:31 2019 +0200

    Add "igmp_snooping_enable" config option for OVS agent

    Neutron-ovs-agent can now enable IGMP snooping in integration bridge
    if config option "igmp_snooping_enable" in OVS section in config will
    be set to True.
    It will also set mcast-snooping-disable-flood-unregistered=true
    so flooding of multicast packets to all unregistered ports will be
    disabled also.
    Both changes are applied on integration bridge.

    Change-Id: I12f4030a35d10d1715d3b4bfb3ed5efb9aa28f2b
    Closes-Bug: #1840136
    (cherry picked from commit 5b341150e29137e3dab671453a9a6c0908e74585)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/735356
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=794a29a2d2afe2a77de3a32e5739d1545d394142
Submitter: Zuul
Branch: stable/queens

commit 794a29a2d2afe2a77de3a32e5739d1545d394142
Author: Slawek Kaplonski <email address hidden>
Date: Tue Sep 17 14:20:31 2019 +0200

    Add "igmp_snooping_enable" config option for OVS agent

    Neutron-ovs-agent can now enable IGMP snooping in integration bridge
    if config option "igmp_snooping_enable" in OVS section in config will
    be set to True.
    It will also set mcast-snooping-disable-flood-unregistered=true
    so flooding of multicast packets to all unregistered ports will be
    disabled also.
    Both changes are applied on integration bridge.

    Change-Id: I12f4030a35d10d1715d3b4bfb3ed5efb9aa28f2b
    Closes-Bug: #1840136
    (cherry picked from commit 5b341150e29137e3dab671453a9a6c0908e74585)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/735355
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=de322da9e0d91a321823332d89c4e17072641e61
Submitter: Zuul
Branch: stable/rocky

commit de322da9e0d91a321823332d89c4e17072641e61
Author: Slawek Kaplonski <email address hidden>
Date: Tue Sep 17 14:20:31 2019 +0200

    Add "igmp_snooping_enable" config option for OVS agent

    Neutron-ovs-agent can now enable IGMP snooping in integration bridge
    if config option "igmp_snooping_enable" in OVS section in config will
    be set to True.
    It will also set mcast-snooping-disable-flood-unregistered=true
    so flooding of multicast packets to all unregistered ports will be
    disabled also.
    Both changes are applied on integration bridge.

    Change-Id: I12f4030a35d10d1715d3b4bfb3ed5efb9aa28f2b
    Closes-Bug: #1840136
    (cherry picked from commit 5b341150e29137e3dab671453a9a6c0908e74585)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/735354
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=ea0b03a19d5b7564d318806b32cc7c17573192f9
Submitter: Zuul
Branch: stable/stein

commit ea0b03a19d5b7564d318806b32cc7c17573192f9
Author: Slawek Kaplonski <email address hidden>
Date: Tue Sep 17 14:20:31 2019 +0200

    Add "igmp_snooping_enable" config option for OVS agent

    Neutron-ovs-agent can now enable IGMP snooping in integration bridge
    if config option "igmp_snooping_enable" in OVS section in config will
    be set to True.
    It will also set mcast-snooping-disable-flood-unregistered=true
    so flooding of multicast packets to all unregistered ports will be
    disabled also.
    Both changes are applied on integration bridge.

    Change-Id: I12f4030a35d10d1715d3b4bfb3ed5efb9aa28f2b
    Closes-Bug: #1840136
    (cherry picked from commit 5b341150e29137e3dab671453a9a6c0908e74585)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron queens-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron rocky-eol release.