Setup Pktgen to run directly on host (vs container)

[taylor]

• Update Pktgen to run directly on host (NFVbench & TRex still runs in container)
  • Modify NFVbench configuration to use correct PCI devices
  • Modify NFVbench configuration to use more cores (7)
  • Make sure enough hugepages are available in host

$ echo 5120 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
$ echo 5120 > /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages

• Once running, update trex-cfg in container to set 5120 hugepages per socket instead of 512
• File location in container /opt/trex/<trex_version>/trex-cfg

[michaelspedersen]

Adding some working notes until I get the setup automated:

./install_docker_prereqs.sh
sudo docker pull opnfv/nfvbench
## Run the below from correct folder (Pktgen)
sudo docker run --detach --net=host --privileged -v $PWD:/tmp/nfvbench -v /dev:/dev -v /lib/modules/$(uname -r):/lib/modules/$(uname -r) -v /usr/src:/usr/src --name nfvbench opnfv/nfvbench

## Set alias in bashrc to simplify running
alias nfvbench='sudo docker exec -it nfvbench nfvbench -c /tmp/nfvbench/nfvbench_config.cfg'

## Update trex-conf to use 5120 Hugepages instead of 512
# Enter running container
docker exec -it nfvbench /bin/bash
# Modify trex-cfg to set 5120 hugepages (/opt/trex/<version>/trex-cfg
 
## Get MACs when running TRex (for use with vBNG config)
# Run NFVbench once and write down MACs from terminal output

## Modify Pktgen/nfvbench_config.cfg as needed
# PCI addresses and number of cores should be specified