[Bug 2065563] [NEW] [ovn-vif] Issue with connecting PF representor of DPU to OVN

[Ihtisham ul Haq]

Public bug reported:

We are using baremetal with Nvidia Bluefield 2 DPU with the goal of
connecting the host(without any VMs) to the OVN overlay. But we can't
connect PF representor to the overlay because as per docs[0] if we don't
have VF representor but rather PF representor, as we want to connect the
baremetal host directly to the OVN, we don't need to provide `vf-num`
but the code[1] expects to have this key, otherwise the ovn-controller
can't claim the port.

[0] https://github.com/ovn-org/ovn-vif/blob/main/Documentation/topics/vif-plug-providers/vif-plug-representor.rst
[1] https://github.com/ovn-org/ovn-vif/blob/731e0995719fe3e96a4fa6423bdbd4a0ccb8b8ea/lib/vif-plug-providers/representor/vif-plug-representor.c#L739

** Affects: ovn (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2065563

Title:
  [ovn-vif] Issue with connecting PF representor of DPU to OVN

Status in ovn package in Ubuntu:
  New

Bug description:
  We are using baremetal with Nvidia Bluefield 2 DPU with the goal of
  connecting the host(without any VMs) to the OVN overlay. But we can't
  connect PF representor to the overlay because as per docs[0] if we
  don't have VF representor but rather PF representor, as we want to
  connect the baremetal host directly to the OVN, we don't need to
  provide `vf-num` but the code[1] expects to have this key, otherwise
  the ovn-controller can't claim the port.

  [0] https://github.com/ovn-org/ovn-vif/blob/main/Documentation/topics/vif-plug-providers/vif-plug-representor.rst
  [1] https://github.com/ovn-org/ovn-vif/blob/731e0995719fe3e96a4fa6423bdbd4a0ccb8b8ea/lib/vif-plug-providers/representor/vif-plug-representor.c#L739

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