pktgen.sh (from http://lost-and-found-narihiro.blogspot.ru/2012/12/pktgen-packet-generator.html)

pktgen.sh

#!/bin/bash

#modprobe pktgen
modprobe pktgen

function pgset() {
    local result

    echo $1 > $PGDEV

    result=`cat $PGDEV | fgrep "Result: OK:"`
    if [ "$result" = "" ]; then
         cat $PGDEV | fgrep Result:
    fi
}

function pg() {
    echo inject > $PGDEV
    cat $PGDEV
}

# Config Start Here -----------------------------------------------------------


# thread config
# Each CPU has own thread. Two CPU exammple. We add eth1, eth2 respectivly.

PGDEV=/proc/net/pktgen/kpktgend_0
  echo "Removing all devices"
 pgset "rem_device_all"
  echo "Adding vnet0"
 pgset "add_device vnet0"
  echo "Setting max_before_softirq 10000"
 pgset "max_before_softirq 10000"

#PGDEV=/proc/net/pktgen/kpktgend_1
#  echo "Removing all devices"
# pgset "rem_device_all"
#  echo "Adding eth2"
# pgset "add_device eth2"
#  echo "Setting max_before_softirq 10000"
# pgset "max_before_softirq 10000"


# device config
# delay 0 means maximum speed.

CLONE_SKB="clone_skb 100"
# NIC adds 4 bytes CRC
PKT_SIZE="pkt_size 60"

# COUNT 0 means forever
#COUNT="count 0"
COUNT="count 10000000"
DELAY="delay 0"

PGDEV=/proc/net/pktgen/vnet0
  echo "Configuring $PGDEV"
 pgset "$COUNT"
 pgset "$CLONE_SKB"
 pgset "$PKT_SIZE"
 pgset "$DELAY"
 pgset "dst 192.168.30.101"
 pgset "dst_mac  52:54:00:cd:fb:85"

#PGDEV=/proc/net/pktgen/eth2
#  echo "Configuring $PGDEV"
# pgset "$COUNT"
# pgset "$CLONE_SKB"
# pgset "$PKT_SIZE"
# pgset "$DELAY"
# pgset "dst 192.168.30.100"
# pgset "dst_mac  52:54:00:14:d3:f1"

# Time to run
PGDEV=/proc/net/pktgen/pgctrl

 echo "Running... ctrl^C to stop"
 pgset "start"
 echo "Done"

# Result can be vieved in /proc/net/pktgen/eth[1,2]
cat /proc/net/pktgen/vnet0