Hi,
I'm trying to understand if OVN supports SR-IOV. I found some OpentStack
documentation:
https://docs.openstack.org/project-deploy-guide/charm-deployment-guide/wallaby/app-ovn.html#configuration
that suggests it might, but it is short on details, with specifics
abstracted via the OpenStack CMS.
Also in the OVN Architecture documentation there are hints to support:
"For instances connected through representor ports, typically used
with hardware
offload, the ovn-controller may on CMS direction consult a VIF
plug provider for
representor port lookup and plug them into the integration bridge
(please refer to
Docu mentation/topics/vif-plug-providers/vif-plug-providers.rst for
more information)."
But again short on details.
So I believe something like a CX-5/6/7 would have the capability to do
this, but here would have to be some
sort of OVN hook for the OVS flows created by OVN to be "copied/moved"
to the H/W so that encapsulation,
NAT, distributed routing ACLs etc is done in the hardware. I can't find
any details on this nor what would the
control plane for programing the hardware be to do that, ovn-nbctl?,
ovsdbapp? some other out of band control plane?.
Also from what I gather from the OpenStack docs this seems experimental
and limited to VXLAN encapsulation?
At present I use a libvirt OVN hook that hooks KVM/QEMU VMs into OVN
br-int but these are using
software VIFs. I'm trying to ascertain if can have these VM use SR-IOV,
and still have them integrated
into the OVN logical networks.
Any pointers would welcome.
Thanks
Brendan
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