pktgen: add sample script pktgen_sample01_simple.sh

Sample scripts

==============

A collection of small tutorial scripts for pktgen is in the

samples/pktgen directory:

A collection of tutorial scripts and helpers for pktgen is in the

samples/pktgen directory. The helper parameters.sh file support easy

and consistant parameter parsing across the sample scripts.

Usage example and help:

 ./pktgen_sample01_simple.sh -i eth4 -m 00:1B:21:3C:9D:F8 -d 192.168.8.2

Usage: ./pktgen_sample01_simple.sh [-vx] -i ethX

  -i : ($DEV)       output interface/device (required)

  -s : ($PKT_SIZE)  packet size

  -d : ($DEST_IP)   destination IP

  -m : ($DST_MAC)   destination MAC-addr

  -t : ($THREADS)   threads to start

  -c : ($SKB_CLONE) SKB clones send before alloc new SKB

  -b : ($BURST)     HW level bursting of SKBs

  -v : ($VERBOSE)   verbose

  -x : ($DEBUG)     debug

The global variables being set are also listed.  E.g. the required

interface/device parameter "-i" sets variable $DEV.  Copy the

pktgen_sampleXX scripts and modify them to fit your own needs.

The old scripts:

pktgen.conf-1-1                  # 1 CPU 1 dev 

pktgen.conf-1-2                  # 1 CPU 2 dev

pktgen.conf-2-1                  # 2 CPU's 1 dev 

pktgen.conf-2-2                  # 2 CPU's 2 dev

pktgen.conf-1-1-ip6-rdos         # 1 CPU 1 dev ipv6  w. route DoS

pktgen.conf-1-1-flows            # 1 CPU 1 dev multiple flows.

Run in shell: ./pktgen.conf-X-Y

This does all the setup including sending.

Interrupt affinity

===================

#!/bin/bash

#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.

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.

CLONE_SKB="clone_skb 1000000"

# 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/eth1

  echo "Configuring $PGDEV"

 pgset "$COUNT"

 pgset "$CLONE_SKB"

 pgset "$PKT_SIZE"

 pgset "$DELAY"

 pgset "dst 10.10.11.2"

 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

#!/bin/bash

#

# Simple example:

#  * pktgen sending with single thread and single interface

#  * flow variation via random UDP source port

#

basedir=`dirname $0`

source ${basedir}/functions.sh

root_check_run_with_sudo "$@"

# Parameter parsing via include

# - go look in parameters.sh to see which setting are avail

# - required param is the interface "-i" stored in $DEV

source ${basedir}/parameters.sh

#

# Set some default params, if they didn't get set

[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"

[ -z "$CLONE_SKB" ] && CLONE_SKB="0"

# Example enforce param "-m" for dst_mac

[ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"

# Base Config

DELAY="0"        # Zero means max speed

COUNT="100000"   # Zero means indefinitely

# Flow variation random source port between min and max

UDP_MIN=9

UDP_MAX=109

# General cleanup everything since last run

# (especially important if other threads were configured by other scripts)

pg_ctrl "reset"

# Add remove all other devices and add_device $DEV to thread 0

thread=0

pg_thread $thread "rem_device_all"

pg_thread $thread "add_device" $DEV

# How many packets to send (zero means indefinitely)

pg_set $DEV "count $COUNT"

# Reduce alloc cost by sending same SKB many times

# - this obviously affects the randomness within the packet

pg_set $DEV "clone_skb $CLONE_SKB"

# Set packet size

pg_set $DEV "pkt_size $PKT_SIZE"

# Delay between packets (zero means max speed)

pg_set $DEV "delay $DELAY"

# Flag example disabling timestamping

pg_set $DEV "flag NO_TIMESTAMP"

# Destination

pg_set $DEV "dst_mac $DST_MAC"

pg_set $DEV "dst $DEST_IP"

# Setup random UDP port src range

pg_set $DEV "flag UDPSRC_RND"

pg_set $DEV "udp_src_min $UDP_MIN"

pg_set $DEV "udp_src_max $UDP_MAX"

# start_run

echo "Running... ctrl^C to stop" >&2

pg_ctrl "start"

echo "Done" >&2

# Print results

echo "Result device: $DEV"

cat /proc/net/pktgen/$DEV