[OVN] QoS rules do not apply to distributed floating IP traffic

[Rodolfo Alonso]

When QoS floating IP is used, the OVN QoS rules do not apply to distributed floating IP ("enable_distributed_floating_ip=True"). The condition applied in [1]:
  is_chassis_resident(chassisredirect_lrp_xxx)

is valid for non distributed floating IP deployments. The chassisredirect lrp is present in the chassis where the floating IP NAT is done.

But in distributed floating IP deployments, the NAT is done locally in the compute node that hosts the private IP port; that means the match condition should be:
  is_chassis_resident(private_port)

[1]https://github.com/openstack/neutron/blob/4a021306ad53c588dd9f8269124e7b0d49a2c752/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/extensions/qos.py#L104-L106

[Oleg Bondarev (obondarev)]

Fix: https://review.opendev.org/c/openstack/neutron/+/775629

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron 18.0.0.0rc1 release candidate.

[Erlon R. Cruz (sombrafam)]

I'm curious to know why would be the utility of having the QoS rules applied to the FIPs,
given IFIC, OVN does not support QoS at all see[1].

[1] https://docs.openstack.org/neutron/latest/ovn/gaps.html

[Rodolfo Alonso (rodolfo-alonso-hernandez)]

Hello Erlon:

This document is not talking about core OVN QoS support but the implementation of OVN mech driver in Neutron and the QoS support Neutron provides for this driver.

OVN FIP (max bw) is currently fully supported using the OVN QoS rules. GW IP QoS support is still under development.

Patch changing the documentation: https://review.opendev.org/c/openstack/neutron/+/777571
GW IP QoS support: https://review.opendev.org/c/openstack/neutron/+/749012

Regards.