1#!/bin/bash 2# 3# Simple example: 4# * pktgen sending with single thread and single interface 5# * flow variation via random UDP source port 6# 7basedir=`dirname $0` 8source ${basedir}/functions.sh 9root_check_run_with_sudo "$@" 10 11# Parameter parsing via include 12# - go look in parameters.sh to see which setting are avail 13# - required param is the interface "-i" stored in $DEV 14source ${basedir}/parameters.sh 15# 16# Set some default params, if they didn't get set 17[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42" 18[ -z "$CLONE_SKB" ] && CLONE_SKB="0" 19# Example enforce param "-m" for dst_mac 20[ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac" 21 22# Base Config 23DELAY="0" # Zero means max speed 24COUNT="100000" # Zero means indefinitely 25 26# Flow variation random source port between min and max 27UDP_MIN=9 28UDP_MAX=109 29 30# General cleanup everything since last run 31# (especially important if other threads were configured by other scripts) 32pg_ctrl "reset" 33 34# Add remove all other devices and add_device $DEV to thread 0 35thread=0 36pg_thread $thread "rem_device_all" 37pg_thread $thread "add_device" $DEV 38 39# How many packets to send (zero means indefinitely) 40pg_set $DEV "count $COUNT" 41 42# Reduce alloc cost by sending same SKB many times 43# - this obviously affects the randomness within the packet 44pg_set $DEV "clone_skb $CLONE_SKB" 45 46# Set packet size 47pg_set $DEV "pkt_size $PKT_SIZE" 48 49# Delay between packets (zero means max speed) 50pg_set $DEV "delay $DELAY" 51 52# Flag example disabling timestamping 53pg_set $DEV "flag NO_TIMESTAMP" 54 55# Destination 56pg_set $DEV "dst_mac $DST_MAC" 57pg_set $DEV "dst $DEST_IP" 58 59# Setup random UDP port src range 60pg_set $DEV "flag UDPSRC_RND" 61pg_set $DEV "udp_src_min $UDP_MIN" 62pg_set $DEV "udp_src_max $UDP_MAX" 63 64# start_run 65echo "Running... ctrl^C to stop" >&2 66pg_ctrl "start" 67echo "Done" >&2 68 69# Print results 70echo "Result device: $DEV" 71cat /proc/net/pktgen/$DEV 72