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 $UDP_DST_MAX 34fi 35 36# General cleanup everything since last run 37[ -z "$APPEND" ] && pg_ctrl "reset" 38 39# Threads are specified with parameter -t value in $THREADS 40for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 41 dev=${DEV}@${thread} 42 43 # Add remove all other devices and add_device $dev to thread 44 [ -z "$APPEND" ] && pg_thread $thread "rem_device_all" 45 pg_thread $thread "add_device" $dev 46 47 # Base config 48 pg_set $dev "flag QUEUE_MAP_CPU" 49 pg_set $dev "count $COUNT" 50 pg_set $dev "clone_skb $CLONE_SKB" 51 pg_set $dev "pkt_size $PKT_SIZE" 52 pg_set $dev "delay $DELAY" 53 pg_set $dev "flag NO_TIMESTAMP" 54 55 # Single destination 56 pg_set $dev "dst_mac $DST_MAC" 57 pg_set $dev "dst${IP6}_min $DST_MIN" 58 pg_set $dev "dst${IP6}_max $DST_MAX" 59 60 if [ -n "$DST_PORT" ]; then 61 # Single destination port or random port range 62 pg_set $dev "flag UDPDST_RND" 63 pg_set $dev "udp_dst_min $UDP_DST_MIN" 64 pg_set $dev "udp_dst_max $UDP_DST_MAX" 65 fi 66 67 [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM" 68 69 # Setup source IP-addresses based on thread number 70 pg_set $dev "src_min 198.18.$((thread+1)).1" 71 pg_set $dev "src_max 198.18.$((thread+1)).1" 72 73 # Setup burst, for easy testing -b 0 disable bursting 74 # (internally in pktgen default and minimum burst=1) 75 if [[ ${BURST} -ne 0 ]]; then 76 pg_set $dev "burst $BURST" 77 else 78 info "$dev: Not using burst" 79 fi 80 81done 82 83# Run if user hits control-c 84function print_result() { 85 # Print results 86 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 87 dev=${DEV}@${thread} 88 echo "Device: $dev" 89 cat /proc/net/pktgen/$dev | grep -A2 "Result:" 90 done 91} 92# trap keyboard interrupt (Ctrl-C) 93trap true SIGINT 94 95if [ -z "$APPEND" ]; then 96 echo "Running... ctrl^C to stop" >&2 97 pg_ctrl "start" 98 99 print_result 100else 101 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run" 102fi 103