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Platform Independent Packet Processing withODP

Tapio TallgrenPublic

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

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What is OpenDataPlane?

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● Supports system-on-chips● Supports standard high-

volume servers● Provides common

abstractions for data plane applications

● Vendors can have their own ODP library implementations

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ODP is data plane optimized

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● ARM, MIPS, PPC, x86,...● Makes best use of the hardware capabilities of the

different platforms

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ODP is hardware independent

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● 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

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ODP value for an equipment vendor: hardware independence

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● 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/

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Netmap

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● ODP implemented on netmap● odp_pktio_send function uses

send_pkt_netmap...

● See picture

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ODP-netmap

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● 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

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Test setup

Results – ODP only

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L2 forwarding packet rate

ODP-Socket (Niantic)ODP-Netmap (Niantic)ODP-DPDK (Niantic)ODP-DPDK (Fortville)

Number of cores and 10GE ports

Pack

et ra

te (M

pps)