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[Armando Migliaccio <1614564@xxxxxxxxxxxxxxxxxx>]

** Changed in: neutron
       Status: Confirmed => Fix Released

** Tags added: doc

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https://bugs.launchpad.net/bugs/1614564

Title:
  SRIOV not working with OvS on same host on vlan network for intel NICs

Status in neutron:
  Fix Released

Bug description:
  Hi,

  Issue -
    On Liberty Openstack with FDB patch, SRIOV VM communication to OvS VM on same host is working good for openstack Flat network but not for openstack VLAN network.

  Pre condn -
          https://wiki.openstack.org/wiki/SR-IOV-Passthrough-For-Networking

  Scenario
        . Create a VLAN network.
        . Create a normal instance VM A VM B, the OVS external bridge(br-ex) is connected to PF.
        . I am not able to get the IP from external DHCP and i am able to see the fdb entries for the VM.
        . Create SRIOV instance VM C on the same VLAN network on the same compute host.
        . I am able to get IP from external server and do ping gateway for VM C via VF.
        . VM A & VM B work if i clear the VFs in the same compute host or if i create OvS VM after booting SRIOV VMs(i.e, after assigning MAC and VLANs to VFs)
        . But still i am not able to ping each other between VM A/VM B and VM C

  Logs -
        . The TCP dump shows the reply going out of the DHCP server, but it is not hitting PF but the ARP is received at the VF and hit the SRIOV instance VM-SRIOV.

        . PF is not getting any incoming packets from external server or
  from SRIOV instance.

  Versions -
  Openstack - Liberty with fdb extension
  ixgbe - 4.3.13
  ixgbevf - 3.1.2

  Please help me if i am doing wrong

  Regards,
  MK

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