1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3# 4# Script will generate one flow per thread (-t N) 5# - Same destination IP 6# - Fake source IPs for each flow (fixed based on thread number) 7# 8# Useful for scale testing on receiver, to see whether silo'ing flows 9# works and scales. For optimal scalability (on receiver) each 10# separate-flow should not access shared variables/data. This script 11# helps magnify any of these scaling issues by overloading the receiver. 12# 13basedir=`dirname $0` 14source ${basedir}/functions.sh 15root_check_run_with_sudo "$@" 16 17# Parameter parsing via include 18source ${basedir}/parameters.sh 19# Set some default params, if they didn't get set 20if [ -z "$DEST_IP" ]; then 21 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" 22fi 23[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" 24[ -z "$CLONE_SKB" ] && CLONE_SKB="0" 25[ -z "$BURST" ] && BURST=32 26[ -z "$COUNT" ] && COUNT="0" # Zero means indefinitely 27if [ -n "$DEST_IP" ]; then 28 validate_addr${IP6} $DEST_IP 29 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP) 30fi 31if [ -n "$DST_PORT" ]; then 32 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) 33 validate_ports $UDP_DST_MIN $UDP_DST_MAX 34fi 35 36# Base Config 37DELAY="0" # Zero means max speed 38 39# General cleanup everything since last run 40pg_ctrl "reset" 41 42# Threads are specified with parameter -t value in $THREADS 43for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 44 dev=${DEV}@${thread} 45 46 # Add remove all other devices and add_device $dev to thread 47 pg_thread $thread "rem_device_all" 48 pg_thread $thread "add_device" $dev 49 50 # Base config 51 pg_set $dev "flag QUEUE_MAP_CPU" 52 pg_set $dev "count $COUNT" 53 pg_set $dev "clone_skb $CLONE_SKB" 54 pg_set $dev "pkt_size $PKT_SIZE" 55 pg_set $dev "delay $DELAY" 56 pg_set $dev "flag NO_TIMESTAMP" 57 58 # Single destination 59 pg_set $dev "dst_mac $DST_MAC" 60 pg_set $dev "dst${IP6}_min $DST_MIN" 61 pg_set $dev "dst${IP6}_max $DST_MAX" 62 63 if [ -n "$DST_PORT" ]; then 64 # Single destination port or random port range 65 pg_set $dev "flag UDPDST_RND" 66 pg_set $dev "udp_dst_min $UDP_DST_MIN" 67 pg_set $dev "udp_dst_max $UDP_DST_MAX" 68 fi 69 70 # Setup source IP-addresses based on thread number 71 pg_set $dev "src_min 198.18.$((thread+1)).1" 72 pg_set $dev "src_max 198.18.$((thread+1)).1" 73 74 # Setup burst, for easy testing -b 0 disable bursting 75 # (internally in pktgen default and minimum burst=1) 76 if [[ ${BURST} -ne 0 ]]; then 77 pg_set $dev "burst $BURST" 78 else 79 info "$dev: Not using burst" 80 fi 81 82done 83 84# Run if user hits control-c 85function print_result() { 86 # Print results 87 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 88 dev=${DEV}@${thread} 89 echo "Device: $dev" 90 cat /proc/net/pktgen/$dev | grep -A2 "Result:" 91 done 92} 93# trap keyboard interrupt (Ctrl-C) 94trap true SIGINT 95 96echo "Running... ctrl^C to stop" >&2 97pg_ctrl "start" 98 99print_result 100