111 lines · bash
1#!/bin/bash2# SPDX-License-Identifier: GPL-2.03#4# Multiqueue: Using pktgen threads for sending on multiple CPUs5# * adding devices to kernel threads6# * notice the naming scheme for keeping device names unique7# * nameing scheme: dev@thread_number8# * flow variation via random UDP source port9#10basedir=`dirname $0`11source ${basedir}/functions.sh12root_check_run_with_sudo "$@"13#14# Required param: -i dev in $DEV15source ${basedir}/parameters.sh16 17# Trap EXIT first18trap_exit19 20[ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely21 22# Base Config23[ -z "$CLONE_SKB" ] && CLONE_SKB="0"24 25# Flow variation random source port between min and max26UDP_SRC_MIN=927UDP_SRC_MAX=10928 29# (example of setting default params in your script)30if [ -z "$DEST_IP" ]; then31 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"32fi33[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"34if [ -n "$DEST_IP" ]; then35 validate_addr${IP6} $DEST_IP36 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)37fi38if [ -n "$DST_PORT" ]; then39 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)40 validate_ports $UDP_DST_MIN $UDP_DST_MAX41fi42 43# General cleanup everything since last run44[ -z "$APPEND" ] && pg_ctrl "reset"45 46# Threads are specified with parameter -t value in $THREADS47for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do48 # The device name is extended with @name, using thread number to49 # make then unique, but any name will do.50 dev=${DEV}@${thread}51 52 # Add remove all other devices and add_device $dev to thread53 [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"54 pg_thread $thread "add_device" $dev55 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 number58 pg_set $dev "flag QUEUE_MAP_CPU"59 60 # Base config of dev61 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 timestamping67 pg_set $dev "flag NO_TIMESTAMP"68 69 # Destination70 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" ]; then75 # Single destination port or random port range76 pg_set $dev "flag UDPDST_RND"77 pg_set $dev "udp_dst_min $UDP_DST_MIN"78 pg_set $dev "udp_dst_max $UDP_DST_MAX"79 fi80 81 [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"82 83 # Setup random UDP port src range84 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"87done88 89# Run if user hits control-c90function print_result() {91 # Print results92 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do93 dev=${DEV}@${thread}94 echo "Device: $dev"95 cat /proc/net/pktgen/$dev | grep -A2 "Result:"96 done97}98# trap keyboard interrupt (Ctrl-C)99trap true SIGINT100 101if [ -z "$APPEND" ]; then102 # start_run103 echo "Running... ctrl^C to stop" >&2104 pg_ctrl "start"105 echo "Done" >&2106 107 print_result108else109 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"110fi111