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 ${basedir}/parameters.sh 15 16[ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely 17 18# Base Config 19DELAY="0" # Zero means max speed 20[ -z "$CLONE_SKB" ] && CLONE_SKB="0" 21 22# Flow variation random source port between min and max 23UDP_MIN=9 24UDP_MAX=109 25 26# (example of setting default params in your script) 27if [ -z "$DEST_IP" ]; then 28 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" 29fi 30[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" 31 32# General cleanup everything since last run 33pg_ctrl "reset" 34 35# Threads are specified with parameter -t value in $THREADS 36for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 37 # The device name is extended with @name, using thread number to 38 # make then unique, but any name will do. 39 dev=${DEV}@${thread} 40 41 # Add remove all other devices and add_device $dev to thread 42 pg_thread $thread "rem_device_all" 43 pg_thread $thread "add_device" $dev 44 45 # Notice config queue to map to cpu (mirrors smp_processor_id()) 46 # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number 47 pg_set $dev "flag QUEUE_MAP_CPU" 48 49 # Base config of dev 50 pg_set $dev "count $COUNT" 51 pg_set $dev "clone_skb $CLONE_SKB" 52 pg_set $dev "pkt_size $PKT_SIZE" 53 pg_set $dev "delay $DELAY" 54 55 # Flag example disabling timestamping 56 pg_set $dev "flag NO_TIMESTAMP" 57 58 # Destination 59 pg_set $dev "dst_mac $DST_MAC" 60 pg_set $dev "dst$IP6 $DEST_IP" 61 62 # Setup random UDP port src range 63 pg_set $dev "flag UDPSRC_RND" 64 pg_set $dev "udp_src_min $UDP_MIN" 65 pg_set $dev "udp_src_max $UDP_MAX" 66done 67 68# start_run 69echo "Running... ctrl^C to stop" >&2 70pg_ctrl "start" 71echo "Done" >&2 72 73# Print results 74for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 75 dev=${DEV}@${thread} 76 echo "Device: $dev" 77 cat /proc/net/pktgen/$dev | grep -A2 "Result:" 78done 79