#!/bin/bash # SPDX-License-Identifier: GPL-2.0 # # Script will generate one flow per thread (-t N) # - Same destination IP # - Fake source IPs for each flow (fixed based on thread number) # # Useful for scale testing on receiver, to see whether silo'ing flows # works and scales. For optimal scalability (on receiver) each # separate-flow should not access shared variables/data. This script # helps magnify any of these scaling issues by overloading the receiver. # basedir=`dirname $0` source ${basedir}/functions.sh root_check_run_with_sudo "$@" # Parameter parsing via include source ${basedir}/parameters.sh # Set some default params, if they didn't get set [ -z "$DEST_IP" ] && DEST_IP="198.18.0.42" [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" [ -z "$CLONE_SKB" ] && CLONE_SKB="0" [ -z "$BURST" ] && BURST=32 [ -z "$COUNT" ] && COUNT="0" # Zero means indefinitely if [ -n "$DEST_IP" ]; then validate_addr $DEST_IP read -r DST_MIN DST_MAX <<< $(parse_addr $DEST_IP) fi if [ -n "$DST_PORT" ]; then read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) validate_ports $UDP_DST_MIN $UDP_DST_MAX fi # General cleanup everything since last run [ -z "$APPEND" ] && pg_ctrl "reset" # Threads are specified with parameter -t value in $THREADS for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do dev=${DEV}@${thread} # Add remove all other devices and add_device $dev to thread [ -z "$APPEND" ] && pg_thread $thread "rem_device_all" pg_thread $thread "add_device" $dev # Base config pg_set $dev "flag QUEUE_MAP_CPU" pg_set $dev "count $COUNT" pg_set $dev "clone_skb $CLONE_SKB" pg_set $dev "pkt_size $PKT_SIZE" pg_set $dev "delay $DELAY" pg_set $dev "flag NO_TIMESTAMP" # Single destination pg_set $dev "dst_mac $DST_MAC" pg_set $dev "dst_min $DST_MIN" pg_set $dev "dst_max $DST_MAX" if [ -n "$DST_PORT" ]; then # Single destination port or random port range pg_set $dev "flag UDPDST_RND" pg_set $dev "udp_dst_min $UDP_DST_MIN" pg_set $dev "udp_dst_max $UDP_DST_MAX" fi [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM" # Setup source IP-addresses based on thread number pg_set $dev "src_min 198.18.$((thread+1)).1" pg_set $dev "src_max 198.18.$((thread+1)).1" # Setup burst, for easy testing -b 0 disable bursting # (internally in pktgen default and minimum burst=1) if [[ ${BURST} -ne 0 ]]; then pg_set $dev "burst $BURST" else info "$dev: Not using burst" fi done # Run if user hits control-c function print_result() { # Print results for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do dev=${DEV}@${thread} echo "Device: $dev" cat /proc/net/pktgen/$dev | grep -A2 "Result:" done } # trap keyboard interrupt (Ctrl-C) trap true SIGINT if [ -z "$APPEND" ]; then echo "Running... ctrl^C to stop" >&2 pg_ctrl "start" print_result else echo "Append mode: config done. Do more or use 'pg_ctrl start' to run" fi