Reviewed: https://review.opendev.org/c/openstack/neutron/+/958877 Committed: https://opendev.org/openstack/neutron/commit/b5e625fa3a313de3666a048f5a8ec79ca6bced71 Submitter: "Zuul (22348)" Branch: master
commit b5e625fa3a313de3666a048f5a8ec79ca6bced71 Author: Rodolfo Alonso Hernandez <[email protected]> Date: Fri Aug 29 13:16:38 2025 +0000 [SR-IOV] Document the trusted virtual functions feature It is also document what happens, when using a trusted VF, the MAC address is changed. Closes-Bug: #2121530 Signed-off-by: Rodolfo Alonso Hernandez <[email protected]> Change-Id: Iff01b2196d8c0f990155225fce69eab318cce753 ** Changed in: neutron Status: In Progress => Fix Released -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/2121530 Title: [SR-IOV] Trusted VF port MAC address can be changed from inside the VM Status in neutron: Fix Released Bug description: With some drivers (vendors), if from inside the VM the port MAC is change, the VF MAC will be changed accordingly. That is only possible if the port VF is trusted. That represents an issue for the SR-IOV agent, that tries to locate the ports using the tuple (PCI, MAC). If the MAC does match the Neutron DB port MAC: * The agent will print a warning message: LOG.warning(device pci mismatch: %(device_mac)s - %(pci_slot)s, ...) * It will also resync the whole cache. That will request to the Neutron API the list of port information. The RPC call will change the ports status to BUILD [1]. Then, if the port will be set at UP by the agent and the status will change to ACTIVE. That triggers a loop of port status flapping from BUILD to ACTIVE, that is repeated each SR-IOV agent loop (2 seconds by default). The goal of this bug is to determine if we can skip this resync and only write a warning message in the logs in case the (PCI, MAC) tuple doesn't match. [1]https://github.com/openstack/neutron/blob/f9067a719084710ee4f46fa31edb6a938e0dbbb0/neutron/plugins/ml2/rpc.py#L130-L137 Jira ticket: https://issues.redhat.com/browse/OSPRH-19321 To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/2121530/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
