#!/bin/bash

  # SPDX-License-Identifier: GPL-2.0

  
  #modprobe pktgen
  
  
  function pgset() {
      local result
  
      echo $1 > $PGDEV
  
      result=`cat $PGDEV | fgrep "Result: OK:"`
      if [ "$result" = "" ]; then
           cat $PGDEV | fgrep Result:
      fi
  }

  # Config Start Here -----------------------------------------------------------
  
  
  # thread config

  # Each CPU has its own thread. One CPU example. We add eth1.

  # IPv6. Note increase in minimal packet length
  
  PGDEV=/proc/net/pktgen/kpktgend_0
    echo "Removing all devices"
   pgset "rem_device_all"
    echo "Adding eth1"
   pgset "add_device eth1"

  
  
  # device config
  # delay 0 means maximum speed.
  
  # We need to do alloc for every skb since we cannot clone here.
  CLONE_SKB="clone_skb 0"
  
  # NIC adds 4 bytes CRC
  PKT_SIZE="pkt_size 66"
  
  # COUNT 0 means forever
  #COUNT="count 0"
  COUNT="count 10000000"
  DELAY="delay 0"
  
  PGDEV=/proc/net/pktgen/eth1
    echo "Configuring $PGDEV"
   pgset "$COUNT"
   pgset "$CLONE_SKB"
   pgset "$PKT_SIZE"
   pgset "$DELAY"
   pgset "dst6_min fec0::1"
   pgset "dst6_max fec0::FFFF:FFFF"
  
   pgset "dst_mac  00:04:23:08:91:dc"
  
  # Time to run
  PGDEV=/proc/net/pktgen/pgctrl
  
   echo "Running... ctrl^C to stop"

   trap true INT

   pgset "start"
   echo "Done"

   cat /proc/net/pktgen/eth1