** No longer affects: nova
** Also affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1829734
Title:
[RFE] OVS DPDK port representors support
Status in neutron:
In Progress
Status in OpenStack Compute (nova):
New
Status in os-vif:
In Progress
Bug description:
DPDK representors enable configuring a phy port to a guest (VM)
machine.
OVS resides in the hypervisor which has one or more physical
interfaces also known as the physical functions (PFs). If a PF
supports SR-IOV it can be used to enable communication with the VMs
via Virtual Functions (VFs). The VFs are virtual PCIe devices created
from the physical Ethernet controller.
DPDK models a physical interface as a rte device on top of which an
eth device is created. DPDK (version 18.xx) introduced the
representors eth devices. A representor device represents the VF eth
device (VM side) on the hypervisor side and operates on top of a PF.
Representors are multi devices created on top of one PF.
The goal is to enable having dpdk port attached to instance as a
direct port when the hypervisor datapath type is netdev.
Changes needed:
* Neutron:
return OVS VIF type in case of a direct port and a netdev databath.
* Nova:
In case of a port's OVS VIF type and a direct VNIC type, the datapath info
must be set in the VIF profile as the VIF object is instantiated from
VIFHostDevice class with profile of type VIFPortProfileOVSRepresentor.
* os-vif:
Do the plugging using the DPDK Representors syntax[1] in case of
VIFHostDevice and a netdev databath.
[1] http://docs.openvswitch.org/en/latest/topics/dpdk/phy/
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