SRIOV connects VM directly to NIC VF and bypasses virtual networking stack. SmartNIC is another story where virtual networking stack can be installed on the NIC. SRIOV is supported by Neutron. https://docs.openstack.org/neutron/xena/admin/config-sriov.html
Tony ________________________________________ From: discuss <ovs-discuss-boun...@openvswitch.org> on behalf of Brendan Doyle <brendan.do...@oracle.com> Sent: February 15, 2022 07:10 AM To: Satish Patel Cc: ovs-discuss Subject: Re: [ovs-discuss] [External] : Re: SR-IOV OVN OpenStack Mellanox Kinda looking for at a high level yes it is possible and is integrated into ovn control plane, or not not there yet. At a high level first. And is anyone doing this. On 15/02/2022 14:03, Satish Patel wrote: > Not sure if this is what you are looking for > https://urldefense.com/v3/__https://docs.nvidia.com/networking/display/TAN10/ASAP*OVS*Offload__;Kys!!ACWV5N9M2RV99hQ!dFnukkvR8ggDcHotwyqXNVu8B3dWlc7LBGXbc5fECYqHdok6NIeoKkz5aSlp-RCKC10$ > > On Tue, Feb 15, 2022 at 5:47 AM Brendan Doyle <brendan.do...@oracle.com> > wrote: >> Hi, >> >> I'm trying to understand if OVN supports SR-IOV. I found some OpentStack >> documentation: >> https://urldefense.com/v3/__https://docs.openstack.org/project-deploy-guide/charm-deployment-guide/wallaby/app-ovn.html*configuration__;Iw!!ACWV5N9M2RV99hQ!dFnukkvR8ggDcHotwyqXNVu8B3dWlc7LBGXbc5fECYqHdok6NIeoKkz5aSlpwu75q1Q$ >> 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 >> >> _______________________________________________ >> discuss mailing list >> disc...@openvswitch.org >> https://urldefense.com/v3/__https://mail.openvswitch.org/mailman/listinfo/ovs-discuss__;!!ACWV5N9M2RV99hQ!dFnukkvR8ggDcHotwyqXNVu8B3dWlc7LBGXbc5fECYqHdok6NIeoKkz5aSlpNIZip9k$ _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
