1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3# 4# Simple example: 5# * pktgen sending with single thread and single interface 6# * flow variation via random UDP source port 7# 8basedir=`dirname $0` 9source ${basedir}/functions.sh 10root_check_run_with_sudo "$@" 11 12# Parameter parsing via include 13# - go look in parameters.sh to see which setting are avail 14# - required param is the interface "-i" stored in $DEV 15source ${basedir}/parameters.sh 16 17# Trap EXIT first 18trap_exit 19 20# 21# Set some default params, if they didn't get set 22if [ -z "$DEST_IP" ]; then 23 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" 24fi 25[ -z "$CLONE_SKB" ] && CLONE_SKB="0" 26# Example enforce param "-m" for dst_mac 27[ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac" 28[ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely 29if [ -n "$DEST_IP" ]; then 30 validate_addr${IP6} $DEST_IP 31 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP) 32fi 33if [ -n "$DST_PORT" ]; then 34 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) 35 validate_ports $UDP_DST_MIN $UDP_DST_MAX 36fi 37 38# Flow variation random source port between min and max 39UDP_SRC_MIN=9 40UDP_SRC_MAX=109 41 42# General cleanup everything since last run 43# (especially important if other threads were configured by other scripts) 44[ -z "$APPEND" ] && pg_ctrl "reset" 45 46# Add remove all other devices and add_device $DEV to thread 0 47thread=0 48[ -z "$APPEND" ] && pg_thread $thread "rem_device_all" 49pg_thread $thread "add_device" $DEV 50 51# How many packets to send (zero means indefinitely) 52pg_set $DEV "count $COUNT" 53 54# Reduce alloc cost by sending same SKB many times 55# - this obviously affects the randomness within the packet 56pg_set $DEV "clone_skb $CLONE_SKB" 57 58# Set packet size 59pg_set $DEV "pkt_size $PKT_SIZE" 60 61# Delay between packets (zero means max speed) 62pg_set $DEV "delay $DELAY" 63 64# Flag example disabling timestamping 65pg_set $DEV "flag NO_TIMESTAMP" 66 67# Destination 68pg_set $DEV "dst_mac $DST_MAC" 69pg_set $DEV "dst${IP6}_min $DST_MIN" 70pg_set $DEV "dst${IP6}_max $DST_MAX" 71 72if [ -n "$DST_PORT" ]; then 73 # Single destination port or random port range 74 pg_set $DEV "flag UDPDST_RND" 75 pg_set $DEV "udp_dst_min $UDP_DST_MIN" 76 pg_set $DEV "udp_dst_max $UDP_DST_MAX" 77fi 78 79[ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM" 80 81# Setup random UDP port src range 82pg_set $DEV "flag UDPSRC_RND" 83pg_set $DEV "udp_src_min $UDP_SRC_MIN" 84pg_set $DEV "udp_src_max $UDP_SRC_MAX" 85 86# Run if user hits control-c 87function print_result() { 88 # Print results 89 echo "Result device: $DEV" 90 cat /proc/net/pktgen/$DEV 91} 92# trap keyboard interrupt (Ctrl-C) 93trap true SIGINT 94 95if [ -z "$APPEND" ]; then 96 # start_run 97 echo "Running... ctrl^C to stop" >&2 98 pg_ctrl "start" 99 echo "Done" >&2 100 101 print_result 102else 103 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run" 104fi