Platform Independent Packet Processing with ODL
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OpenDataPlane (ODP) is a platform-independent framework designed for data plane applications, supporting various systems and hardware architectures. It allows for fast user space packet processing without involving the kernel, and combines support for native network functions and cloud-based functions in a hardware-independent manner. The document includes details on ODP's implementation with Netmap and performance results from L2 forwarding tests compared to DPDK.
Platform Independent Packet Processing with ODL
- 1. 1 © Nokia Solutions and Networks 2015 Platform Independent Packet Processing with ODP Tapio Tallgren Public
- 2. 2 © Nokia Solutions and Networks 2015 Open Source Code • Code available at git.linaro.org • Permissive BSD license • Pre-built Debian packages A Supported Open Source Project ● All meetings and mailing lists are open ● Supported by >12 companies Open API ● Documented at www.opendataplane.org/ap- documentation • Proposed API changes are in a separate branch Public What is OpenDataPlane?
- 3. 3 © Nokia Solutions and Networks 2015 ● Supports system-on-chips ● Supports standard high- volume servers ● Provides common abstractions for data plane applications ● Vendors can have their own ODP library implementations Public ODP is data plane optimized
- 4. 4 © Nokia Solutions and Networks 2015 ● ARM, MIPS, PPC, x86,... ● Makes best use of the hardware capabilities of the different platforms Public ODP is hardware independent
- 5. 5 © Nokia Solutions and Networks 2015 ● Some Network Functions – Run natively: PNFs – Some in a cloud: VNFs ● VNFs thrive on standard IT servers ● PNFs need to be power and cost optimized Public ODP value for an equipment vendor: hardware independence
- 6. 6 © Nokia Solutions and Networks 2015 ● Allows fast user space packet processing without kernel involvement ● Out-of-tree open source Linux implementation ● Mainly developed for extremely fast traffic generators, virtual switches etc ● http://info.iet.unipi.it/~luigi/netmap/ Public Netmap
- 7. 7 © Nokia Solutions and Networks 2015 ● ODP implemented on netmap ● odp_pktio_send function uses send_pkt_netmap... ● See picture Public ODP-netmap
- 8. 8 © Nokia Solutions and Networks 2015 ● L2 forwarding test application ● ODP L2fwd, on ODP tests ● DPDK L2fwd on Native DPDK tests ● In practice the same functionality ● receive a batch of packets from one interface and send those out to the other interface ● Update Ethernet source address into the packet ● Min packet size: 64 byte frames ● DPDK application is a bit more optimized: collects packets into bursts on tx side Public Test setup
- 9. Results – ODP only 1 2 0 5 10 15 20 25 30 L2 forwarding packet rate ODP-Socket (Niantic) ODP-Netmap (Niantic) ODP-DPDK (Niantic) ODP-DPDK (Fortville) Number of cores and 10GE ports Packetrate(Mpps)