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 ${basedir}/parameters.sh 16 17# Trap EXIT first 18trap_exit 19 20[ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely 21 22# Base Config 23[ -z "$CLONE_SKB" ] && CLONE_SKB="0" 24 25# Flow variation random source port between min and max 26UDP_SRC_MIN=9 27UDP_SRC_MAX=109 28 29# (example of setting default params in your script) 30if [ -z "$DEST_IP" ]; then 31 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" 32fi 33[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" 34if [ -n "$DEST_IP" ]; then 35 validate_addr${IP6} $DEST_IP 36 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP) 37fi 38if [ -n "$DST_PORT" ]; then 39 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) 40 validate_ports $UDP_DST_MIN $UDP_DST_MAX 41fi 42 43# General cleanup everything since last run 44[ -z "$APPEND" ] && pg_ctrl "reset" 45 46# Threads are specified with parameter -t value in $THREADS 47for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 48 # The device name is extended with @name, using thread number to 49 # make then unique, but any name will do. 50 dev=${DEV}@${thread} 51 52 # Add remove all other devices and add_device $dev to thread 53 [ -z "$APPEND" ] && pg_thread $thread "rem_device_all" 54 pg_thread $thread "add_device" $dev 55 56 # Notice config queue to map to cpu (mirrors smp_processor_id()) 57 # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number 58 pg_set $dev "flag QUEUE_MAP_CPU" 59 60 # Base config of dev 61 pg_set $dev "count $COUNT" 62 pg_set $dev "clone_skb $CLONE_SKB" 63 pg_set $dev "pkt_size $PKT_SIZE" 64 pg_set $dev "delay $DELAY" 65 66 # Flag example disabling timestamping 67 pg_set $dev "flag NO_TIMESTAMP" 68 69 # Destination 70 pg_set $dev "dst_mac $DST_MAC" 71 pg_set $dev "dst${IP6}_min $DST_MIN" 72 pg_set $dev "dst${IP6}_max $DST_MAX" 73 74 if [ -n "$DST_PORT" ]; then 75 # Single destination port or random port range 76 pg_set $dev "flag UDPDST_RND" 77 pg_set $dev "udp_dst_min $UDP_DST_MIN" 78 pg_set $dev "udp_dst_max $UDP_DST_MAX" 79 fi 80 81 [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM" 82 83 # Setup random UDP port src range 84 pg_set $dev "flag UDPSRC_RND" 85 pg_set $dev "udp_src_min $UDP_SRC_MIN" 86 pg_set $dev "udp_src_max $UDP_SRC_MAX" 87done 88 89# Run if user hits control-c 90function print_result() { 91 # Print results 92 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 93 dev=${DEV}@${thread} 94 echo "Device: $dev" 95 cat /proc/net/pktgen/$dev | grep -A2 "Result:" 96 done 97} 98# trap keyboard interrupt (Ctrl-C) 99trap true SIGINT 100 101if [ -z "$APPEND" ]; then 102 # start_run 103 echo "Running... ctrl^C to stop" >&2 104 pg_ctrl "start" 105 echo "Done" >&2 106 107 print_result 108else 109 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run" 110fi 111