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