VPP UDP Test

Dockerfile

FROM upg:debug

ENV DEBIAN_FRONTEND noninteractive

RUN apt-get update && \
    apt-get install -y libssl-dev git curl wget iproute2 dumb-init gdb \
    nginx gnupg apt-transport-https netcat tcpdump ethtool socat

COPY start.sh /
COPY test.sh /

ENTRYPOINT ["dumb-init", "--"]
CMD ["/start.sh"]

start.sh

#!/bin/bash
set -u -e -x

mtu="${MTU:-1500}"
ctlsock="/run/vpp/cli-vpp1.sock"

function ctl {
  vppctl -s "${ctlsock}" "$@"
}

function config_vpp {
  while [[ ! -e ${ctlsock} ]]; do
    sleep 1
  done

  ctl create host-interface name vpp0
  ctl set interface state host-vpp0 up
  ctl set interface ip address host-vpp0 10.0.0.2/24
  ctl set interface mtu "${mtu}" host-vpp0

  ctl test echo server uri udp://10.0.0.2/10000 fifo-size 65536
  ctl session enable
}

ip netns add client
ip link add vpp0 type veth peer name client
ip link set dev client netns client
ip netns exec client ip link set dev lo up
ip netns exec client ip link set dev client up mtu "${mtu}"
ip netns exec client ip addr add 10.0.0.1/24 dev client
ip link set dev vpp0 up mtu "${mtu}"
ethtool -K vpp0 gro off gso off

config_vpp &

# echo 'run' > /tmp/cmds
# echo 'bt' >> /tmp/cmds
# gdb -x /tmp/cmds --args \
/usr/bin/vpp \
    unix { nodaemon cli-listen "${ctlsock}" } \
    api-segment { prefix vpp1 } \
    cpu { workers 0 } \
    udp { mtu 12000 }

test.sh

#!/bin/bash
set -u -e

function genstr {
  echo -n {A..Z}{a..z}{A..Z} | head -c$1
}

function test {
  str="$(genstr $1)"
  out="$(echo -n "${str}" | ip netns exec client socat -b1000000 - udp:10.0.0.2:10000)"
  if [[ "${str}" == "${out}" ]]; then
    echo "PASS: $1"
  else
    echo "FAIL: $1"
  fi
}

test 100
test 1400
test 1908
test 1909
test 3000
test 8000
test 11000