160. TestPmd rfc2544 test with IPV4/IPV6 packets

This document provides rfc2544 tests for the userland Ethernet Controller Poll Mode Driver (PMD). The userland PMD application runs the IO forwarding mode test which described in the PMD test plan document with different parameters for the configuration of NIC ports.

RFC2544 Zero packet loss test case: Used to determine the DUT throughput as defined in RFC1242(https://www.ietf.org/rfc/rfc1242.txt). Note RFC6201 https://www.ietf.org/rfc/rfc6201.txt has updated RFC2544 and RFC1242. Please check the link for more details. In this case, RFC2544 test uses dpdk-testpmd as test application.

160.1. Prerequisites

160.1.1. Topology

It requires at least 1 port connected traffic generator::
Port0 — TG0
2 ports::
Port0 — TG0 Port1 — TG1
4 ports::
Port0 — TG0 Port1 — TG1 Port2 — TG2 Port3 — TG3

160.1.2. Hardware

This suite focus on dpdk-testpmd application, so any standard Ethernet Network Adapter is qualified.

160.1.3. Software

dpdk: git clone http://dpdk.org/git/dpdk trex: git clone http://trex-tgn.cisco.com/trex/release/v2.93.tar.gz

160.2. Test Case

Send a specific number of frames at a specific rate through the DUT and then count the frames that are transmitted by the DUT. If the count of offered frames is not equal to the count of received frames, the rate of the offered stream is reduced and the test is rerun. The throughput is the fastest rate at which the count of test frames transmitted by the DUT is equal to the number of test frames sent to it by the test equipment.

160.2.1. Common Steps

  1. Bind tested ports to vfio-pci:

    <dpdk_dir>#./usertools/dpdk-devbind.py -s
0000:17:00.0 'Device 1592' if=ens5f0 drv=ice unused=vfio-pci
<dpdk_dir>#./usertools/dpdk-devbind.py -b vfio-pci <pci device id>
<dpdk_dir>#./usertools/dpdk-devbind.py -b vfio-pci 0000:17:01.0

  2. Configure traffic generator to send traffic

    Routing table for IPv4 packets:

    # IPv4 (IP/length)
    0 198.18.0.0/24
    1 198.18.1.0/24
    2 198.18.2.0/24
    3 198.18.3.0/24

    Routing table for IPv6 packets:

    # IPv6 (IP/length)
    0 2001:0200:0000:0000:0000:0000:0000:0000/64
    1 2001:0200:0000:0001:0000:0000:0000:0000/64
    2 2001:0200:0000:0002:0000:0000:0000:0000/64
    3 2001:0200:0000:0003:0000:0000:0000:0000/64
    The flows need to be configured and started by the traffic generator:
    • IPv4 packets
    Flow Traffic Gen. Port IPv4 Dst. Address IPv4 Src. Address
    1 TG0 198.18.1.1 Any Ip
    2 TG1 198.18.0.1 Any Ip
    3 TG2 198.18.3.1 Any Ip
    4 TG3 198.18.2.1 Any Ip

    Set the packet length : 64 bytes-1518 bytes The IPV4 Src Address increase with the num 1024.

    • IPv6 packets
    Flow Traffic Gen. Port IPV6 Dst. Address IPv6 Src. Address
    1 TG0 2001:0200:0000:0000:0000:0000:0000:0000 Any Ip
    2 TG1 2001:0200:0000:0001:0000:0000:0000:0000 Any Ip
    3 TG2 2001:0200:0000:0002:0000:0000:0000:0000 Any Ip
    4 TG3 2001:0200:0000:0003:0000:0000:0000:0000 Any Ip

    Set the packet length : 66 bytes-1518 bytes The IPV6 Src Address increase with the num 1024.

  3. Test result table

    Fwd_core Frame Size Throughput Rate
    1C/1T 64 xxxxx Mpps xxx %
    1C/1T ... xxxxx Mpps xxx %
    2C/2T 64 xxxxx Mpps xxx %
    2C/2T ... xxxxx Mpps xxx %
    4C/4T 64 xxxxx Mpps xxx %
    4C/4T ... xxxxx Mpps xxx %
    8C/8T 64 xxxxx Mpps xxx %
    8C/8T ... xxxxx Mpps xxx %

160.2.2. Test Case: testpmd rfc2544 performance with IPv4/IPv6 Packets

  1. Bind tested ports to dpdk driver as common step 1.

  2. Start dpdk-testpmd:

    <build_dir>/app/dpdk-testpmd -l 5,6 -n 8 --force-max-simd-bitwidth=512 \
 -- -i --portmask=0x1 --rxq=1 --txq=1 --txd=1024 --rxd=1024 --forward=io \
 --nb-cores=1

Note:
  -force-max-simd-bitwidth: This setting is used to determine the vector path for component selection.
                            And the default is avx2.

  3. Configure traffic generator to send traffic as common step 2.

  4. Record Test results as common step 3.