1#!/bin/bash 2# 3# Multiqueue: Using pktgen threads for sending on multiple CPUs 4# * adding devices to kernel threads 5# * notice the naming scheme for keeping device names unique 6# * nameing scheme: dev@thread_number 7# * flow variation via random UDP source port 8# 9basedir=`dirname $0` 10source ${basedir}/functions.sh 11root_check_run_with_sudo "$@" 12# 13# Required param: -i dev in $DEV 14source ${basedir}/parameters.sh 15 16# Base Config 17DELAY="0" # Zero means max speed 18COUNT="100000" # Zero means indefinitely 19[ -z "$CLONE_SKB" ] && CLONE_SKB="0" 20 21# Flow variation random source port between min and max 22UDP_MIN=9 23UDP_MAX=109 24 25# (example of setting default params in your script) 26if [ -z "$DEST_IP" ]; then 27 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" 28fi 29[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" 30 31# General cleanup everything since last run 32pg_ctrl "reset" 33 34# Threads are specified with parameter -t value in $THREADS 35for ((thread = 0; thread < $THREADS; thread++)); do 36 # The device name is extended with @name, using thread number to 37 # make then unique, but any name will do. 38 dev=${DEV}@${thread} 39 40 # Add remove all other devices and add_device $dev to thread 41 pg_thread $thread "rem_device_all" 42 pg_thread $thread "add_device" $dev 43 44 # Notice config queue to map to cpu (mirrors smp_processor_id()) 45 # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number 46 pg_set $dev "flag QUEUE_MAP_CPU" 47 48 # Base config of dev 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 54 # Flag example disabling timestamping 55 pg_set $dev "flag NO_TIMESTAMP" 56 57 # Destination 58 pg_set $dev "dst_mac $DST_MAC" 59 pg_set $dev "dst$IP6 $DEST_IP" 60 61 # Setup random UDP port src range 62 pg_set $dev "flag UDPSRC_RND" 63 pg_set $dev "udp_src_min $UDP_MIN" 64 pg_set $dev "udp_src_max $UDP_MAX" 65done 66 67# start_run 68echo "Running... ctrl^C to stop" >&2 69pg_ctrl "start" 70echo "Done" >&2 71 72# Print results 73for ((thread = 0; thread < $THREADS; thread++)); do 74 dev=${DEV}@${thread} 75 echo "Device: $dev" 76 cat /proc/net/pktgen/$dev | grep -A2 "Result:" 77done 78