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" 32 33# General cleanup everything since last run 34pg_ctrl "reset" 35 36# Threads are specified with parameter -t value in $THREADS 37for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 38 # The device name is extended with @name, using thread number to 39 # make then unique, but any name will do. 40 dev=${DEV}@${thread} 41 42 # Add remove all other devices and add_device $dev to thread 43 pg_thread $thread "rem_device_all" 44 pg_thread $thread "add_device" $dev 45 46 # Notice config queue to map to cpu (mirrors smp_processor_id()) 47 # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number 48 pg_set $dev "flag QUEUE_MAP_CPU" 49 50 # Base config of dev 51 pg_set $dev "count $COUNT" 52 pg_set $dev "clone_skb $CLONE_SKB" 53 pg_set $dev "pkt_size $PKT_SIZE" 54 pg_set $dev "delay $DELAY" 55 56 # Flag example disabling timestamping 57 pg_set $dev "flag NO_TIMESTAMP" 58 59 # Destination 60 pg_set $dev "dst_mac $DST_MAC" 61 pg_set $dev "dst$IP6 $DEST_IP" 62 63 # Setup random UDP port src range 64 pg_set $dev "flag UDPSRC_RND" 65 pg_set $dev "udp_src_min $UDP_MIN" 66 pg_set $dev "udp_src_max $UDP_MAX" 67done 68 69# start_run 70echo "Running... ctrl^C to stop" >&2 71pg_ctrl "start" 72echo "Done" >&2 73 74# Print results 75for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 76 dev=${DEV}@${thread} 77 echo "Device: $dev" 78 cat /proc/net/pktgen/$dev | grep -A2 "Result:" 79done 80