1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3# 4# Multiqueue: Using pktgen threads for sending on multiple CPUs 5# * adding devices to kernel threads 6# * notice the naming scheme for keeping device names unique 7# * nameing scheme: dev@thread_number 8# * flow variation via random UDP source port 9# 10basedir=`dirname $0` 11source ${basedir}/functions.sh 12root_check_run_with_sudo "$@" 13# 14# Required param: -i dev in $DEV 15source ${basedir}/parameters.sh 16 17[ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely 18 19# Base Config 20DELAY="0" # Zero means max speed 21[ -z "$CLONE_SKB" ] && CLONE_SKB="0" 22 23# Flow variation random source port between min and max 24UDP_MIN=9 25UDP_MAX=109 26 27# (example of setting default params in your script) 28if [ -z "$DEST_IP" ]; then 29 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" 30fi 31[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" 32if [ -n "$DST_PORT" ]; then 33 read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT) 34 validate_ports $DST_MIN $DST_MAX 35fi 36 37# General cleanup everything since last run 38pg_ctrl "reset" 39 40# Threads are specified with parameter -t value in $THREADS 41for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 42 # The device name is extended with @name, using thread number to 43 # make then unique, but any name will do. 44 dev=${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 # Notice config queue to map to cpu (mirrors smp_processor_id()) 51 # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number 52 pg_set $dev "flag QUEUE_MAP_CPU" 53 54 # Base config of dev 55 pg_set $dev "count $COUNT" 56 pg_set $dev "clone_skb $CLONE_SKB" 57 pg_set $dev "pkt_size $PKT_SIZE" 58 pg_set $dev "delay $DELAY" 59 60 # Flag example disabling timestamping 61 pg_set $dev "flag NO_TIMESTAMP" 62 63 # Destination 64 pg_set $dev "dst_mac $DST_MAC" 65 pg_set $dev "dst$IP6 $DEST_IP" 66 67 if [ -n "$DST_PORT" ]; then 68 # Single destination port or random port range 69 pg_set $dev "flag UDPDST_RND" 70 pg_set $dev "udp_dst_min $DST_MIN" 71 pg_set $dev "udp_dst_max $DST_MAX" 72 fi 73 74 # Setup random UDP port src range 75 pg_set $dev "flag UDPSRC_RND" 76 pg_set $dev "udp_src_min $UDP_MIN" 77 pg_set $dev "udp_src_max $UDP_MAX" 78done 79 80# start_run 81echo "Running... ctrl^C to stop" >&2 82pg_ctrl "start" 83echo "Done" >&2 84 85# Print results 86for ((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:" 90done 91