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 ${basedir}/parameters.sh 19 20# Trap EXIT first 21trap_exit 22 23# Set some default params, if they didn't get set 24if [ -z "$DEST_IP" ]; then 25 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" 26fi 27[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" 28[ -z "$CLONE_SKB" ] && CLONE_SKB="0" 29[ -z "$BURST" ] && BURST=32 30[ -z "$COUNT" ] && COUNT="0" # Zero means indefinitely 31if [ -n "$DEST_IP" ]; then 32 validate_addr${IP6} $DEST_IP 33 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP) 34fi 35if [ -n "$DST_PORT" ]; then 36 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) 37 validate_ports $UDP_DST_MIN $UDP_DST_MAX 38fi 39 40# General cleanup everything since last run 41[ -z "$APPEND" ] && pg_ctrl "reset" 42 43# Threads are specified with parameter -t value in $THREADS 44for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 45 dev=${DEV}@${thread} 46 47 # Add remove all other devices and add_device $dev to thread 48 [ -z "$APPEND" ] && pg_thread $thread "rem_device_all" 49 pg_thread $thread "add_device" $dev 50 51 # Base config 52 pg_set $dev "flag QUEUE_MAP_CPU" 53 pg_set $dev "count $COUNT" 54 pg_set $dev "clone_skb $CLONE_SKB" 55 pg_set $dev "pkt_size $PKT_SIZE" 56 pg_set $dev "delay $DELAY" 57 pg_set $dev "flag NO_TIMESTAMP" 58 59 # Single destination 60 pg_set $dev "dst_mac $DST_MAC" 61 pg_set $dev "dst${IP6}_min $DST_MIN" 62 pg_set $dev "dst${IP6}_max $DST_MAX" 63 64 if [ -n "$DST_PORT" ]; then 65 # Single destination port or random port range 66 pg_set $dev "flag UDPDST_RND" 67 pg_set $dev "udp_dst_min $UDP_DST_MIN" 68 pg_set $dev "udp_dst_max $UDP_DST_MAX" 69 fi 70 71 [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM" 72 73 # Setup source IP-addresses based on thread number 74 pg_set $dev "src_min 198.18.$((thread+1)).1" 75 pg_set $dev "src_max 198.18.$((thread+1)).1" 76 77 # Setup burst, for easy testing -b 0 disable bursting 78 # (internally in pktgen default and minimum burst=1) 79 if [[ ${BURST} -ne 0 ]]; then 80 pg_set $dev "burst $BURST" 81 else 82 info "$dev: Not using burst" 83 fi 84 85done 86 87# Run if user hits control-c 88function print_result() { 89 # Print results 90 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 91 dev=${DEV}@${thread} 92 echo "Device: $dev" 93 cat /proc/net/pktgen/$dev | grep -A2 "Result:" 94 done 95} 96# trap keyboard interrupt (Ctrl-C) 97trap true SIGINT 98 99if [ -z "$APPEND" ]; then 100 echo "Running... ctrl^C to stop" >&2 101 pg_ctrl "start" 102 103 print_result 104else 105 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run" 106fi 107