LF_OVS_17_Enabling hardware acceleration in OVS-DPDK using DPDK Framework.
- 1. Enabling hardware acceleration in OVS-DPDK using DPDK ‘Framework’ Sugesh Chandran
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- 3. Introduction • Hardware acceleration in OVS-DPDK. • Challenges of enabling hardware acceleration in OVS-DPDK • DPDK ‘Framework’ , what is it? • DPDK Framework components primer. • Hardware acceleration enablement in OVS-DPDK using DPDK ‘Framework’ • Future work/Next steps.
- 4. Hardware acceleration in OVS-DPDK • Partial acceleration:-Accelerate software datapath by offloading a portion from the packet processing pipeline. • Full acceleration:- Hardware can do end to end packet processing pipeline. Packets are either handled in Software or Hardware datapath.
- 5. Partial HW acceleration in OVS-DPDK Datapath User NIC OVSDB vswitchd Match Flow ActionsIngress Egress Pre- processing Post- processing HW Host Virtio
- 6. Partial HW acceleration in OVS-DPDK 6 Datapath User NIC OVSDB vswitchd Match Flow ActionsIngress Egress Pre- processing Post- processing HW Host Virtio
- 7. Full HW acceleration in OVS-DPDK Datapath 7 SW DP User HW DP OVSDB vswitchd Match Flow ActionsIngress Egress Match Flow ActionsIngress Egress Virtio/ VF Host HW
- 8. Challenges • Feature Parity and Interoperability. • Scalability. • Optimized hardware resource allocation. • Availability of HW acceleration support in OS, tools and other SW components. • Cost of Hardware acceleration setup Vs achievable performance improvement with it. • Live migration support.
- 9. Challenges • Feature Parity and Interoperability. • Scalability. • Optimized hardware resource allocation. • Availability of HW acceleration support in OS, tools and other SW components. • Cost of Hardware acceleration setup Vs achievable performance improvement with it. • Live migration support.
- 10. DPDK Framework
- 11. DPDK Framework
- 12. DPDK Framework
- 13. DPDK Framework
- 14. DPDK Framework
- 15. DPDK Framework
- 16. DPDK Framework
- 17. DPDK Framework
- 18. DPDK ‘Framework’ in OVS-DPDK 1. OVS-DPDK init with hardware acceleration. 18 FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW
- 19. DPDK ‘Framework’ in OVS-DPDK 1. OVS-DPDK init with hardware acceleration. • $ ovs-vsctl set Open_vSwitch . other_config:dpdk- hw-offload-init=true • $ ovs-vsctl set Open_vSwitch . other_config:dpdk- hw-offload-ids="0000:5e:00.0“ FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW 1
- 20. DPDK ‘Framework’ in OVS-DPDK 1. OVS-DPDK init with hardware acceleration. • $ ovs-vsctl set Open_vSwitch . other_config:dpdk- hw-offload-init=true • $ ovs-vsctl set Open_vSwitch . other_config:dpdk- hw-offload-ids="0000:5e:00.0“ FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW 1 2
- 21. DPDK ‘Framework’ in OVS-DPDK 1. OVS-DPDK init with hardware acceleration. • $ ovs-vsctl set Open_vSwitch . other_config:dpdk- hw-offload-init=true • $ ovs-vsctl set Open_vSwitch . other_config:dpdk- hw-offload-ids="0000:5e:00.0“ FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW 1 2 3
- 22. DPDK ‘Framework’ in OVS-DPDK 1. OVS-DPDK init with hardware acceleration. • $ ovs-vsctl set Open_vSwitch . other_config:dpdk- hw-offload-init=true • $ ovs-vsctl set Open_vSwitch . other_config:dpdk- hw-offload-ids="0000:5e:00.0“ FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW 1 2 3 4
- 23. DPDK ‘Framework’ in OVS-DPDK -contd 2. Add a hardware accelerated port to OVS-DPDK. • ovs-vsctl --timeout 10 add-port br0 port0 – set Interface port0 type=dpdkhw options:device- id=0,port-id=0 FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW 1
- 24. DPDK ‘Framework’ in OVS-DPDK -contd 3. Report exception packet to OVS-DPDK. FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW
- 25. DPDK ‘Framework’ in OVS-DPDK -contd 3. Report exception packet to OVS-DPDK. FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW
- 26. DPDK ‘Framework’ in OVS-DPDK -contd 4. Install flow into SW datapath. FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW
- 27. DPDK ‘Framework’ in OVS-DPDK -contd 4. Install flow into FPGA hardware. FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLE R VDPA RTE- FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW
- 28. Current Status FPGA Driver DPDK Framework SWITCH APIs PORT REP. EXPT- HANDLER VDPA RTE-FLOW QOS TUNNEL APIs SW Datapath FPGA PHY OVSDB vswitchd Host HW % completed
- 29. Next Steps • Continue the publishing of DPDK ‘Framework’APIs and implementation in the DPDK ML. • Publish the RFC design to the OVS-DPDK mailing list to get early feedback on the proposal and implementation. • Publish OVS-DPDK implementation using DPDK ‘Framework’ to OVS mailing list.
- 30. Summary § The marriage of OVS-DPDK with hardware acceleration provides a compelling solution to meet the needs of telco NFV workloads. § Abstracting away all the hardware features by handling them implicitly doesn’t always yield an optimum solution . § OVS-DPDK hardware acceleration enablement should be flexible, extendable and capable of using the hardware features in generic way. § DPDK ‘Framework’offers all the needed libraries for hardware acceleration enablement in applications such as OVS-DPDK.