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 "$CLONE_SKB" ] && CLONE_SKB="0" 22 23# Flow variation random source port between min and max 24UDP_SRC_MIN=9 25UDP_SRC_MAX=109 26 27# (example of setting default params in your script) 28if [ -z "$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 "$DEST_IP" ]; then 33 validate_addr${IP6} $DEST_IP 34 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP) 35fi 36if [ -n "$DST_PORT" ]; then 37 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) 38 validate_ports $UDP_DST_MIN $UDP_DST_MAX 39fi 40 41# General cleanup everything since last run 42pg_ctrl "reset" 43 44# Threads are specified with parameter -t value in $THREADS 45for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 46 # The device name is extended with @name, using thread number to 47 # make then unique, but any name will do. 48 dev=${DEV}@${thread} 49 50 # Add remove all other devices and add_device $dev to thread 51 pg_thread $thread "rem_device_all" 52 pg_thread $thread "add_device" $dev 53 54 # Notice config queue to map to cpu (mirrors smp_processor_id()) 55 # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number 56 pg_set $dev "flag QUEUE_MAP_CPU" 57 58 # Base config of dev 59 pg_set $dev "count $COUNT" 60 pg_set $dev "clone_skb $CLONE_SKB" 61 pg_set $dev "pkt_size $PKT_SIZE" 62 pg_set $dev "delay $DELAY" 63 64 # Flag example disabling timestamping 65 pg_set $dev "flag NO_TIMESTAMP" 66 67 # Destination 68 pg_set $dev "dst_mac $DST_MAC" 69 pg_set $dev "dst${IP6}_min $DST_MIN" 70 pg_set $dev "dst${IP6}_max $DST_MAX" 71 72 if [ -n "$DST_PORT" ]; then 73 # Single destination port or random port range 74 pg_set $dev "flag UDPDST_RND" 75 pg_set $dev "udp_dst_min $UDP_DST_MIN" 76 pg_set $dev "udp_dst_max $UDP_DST_MAX" 77 fi 78 79 # Setup random UDP port src range 80 pg_set $dev "flag UDPSRC_RND" 81 pg_set $dev "udp_src_min $UDP_SRC_MIN" 82 pg_set $dev "udp_src_max $UDP_SRC_MAX" 83done 84 85# start_run 86echo "Running... ctrl^C to stop" >&2 87pg_ctrl "start" 88echo "Done" >&2 89 90# Print results 91for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 92 dev=${DEV}@${thread} 93 echo "Device: $dev" 94 cat /proc/net/pktgen/$dev | grep -A2 "Result:" 95done 96