#!/bin/bash # SPDX-License-Identifier: GPL-2.0 # # Multiqueue: Using pktgen threads for sending on multiple CPUs # * adding devices to kernel threads # * notice the naming scheme for keeping device names unique # * nameing scheme: dev@thread_number # * flow variation via random UDP source port # basedir=`dirname $0` source ${basedir}/functions.sh root_check_run_with_sudo "$@" # # Required param: -i dev in $DEV source ${basedir}/parameters.sh [ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely # Base Config [ -z "$CLONE_SKB" ] && CLONE_SKB="0" # Flow variation random source port between min and max UDP_SRC_MIN=9 UDP_SRC_MAX=109 # (example of setting default params in your script) if [ -z "$DEST_IP" ]; then [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" fi [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" if [ -n "$DEST_IP" ]; then validate_addr${IP6} $DEST_IP read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP) fi if [ -n "$DST_PORT" ]; then read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) validate_ports $UDP_DST_MIN $UDP_DST_MAX fi # General cleanup everything since last run [ -z "$APPEND" ] && pg_ctrl "reset" # Threads are specified with parameter -t value in $THREADS for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do # The device name is extended with @name, using thread number to # make then unique, but any name will do. dev=${DEV}@${thread} # Add remove all other devices and add_device $dev to thread [ -z "$APPEND" ] && pg_thread $thread "rem_device_all" pg_thread $thread "add_device" $dev # Notice config queue to map to cpu (mirrors smp_processor_id()) # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number pg_set $dev "flag QUEUE_MAP_CPU" # Base config of dev pg_set $dev "count $COUNT" pg_set $dev "clone_skb $CLONE_SKB" pg_set $dev "pkt_size $PKT_SIZE" pg_set $dev "delay $DELAY" # Flag example disabling timestamping pg_set $dev "flag NO_TIMESTAMP" # Destination pg_set $dev "dst_mac $DST_MAC" pg_set $dev "dst${IP6}_min $DST_MIN" pg_set $dev "dst${IP6}_max $DST_MAX" if [ -n "$DST_PORT" ]; then # Single destination port or random port range pg_set $dev "flag UDPDST_RND" pg_set $dev "udp_dst_min $UDP_DST_MIN" pg_set $dev "udp_dst_max $UDP_DST_MAX" fi # Setup random UDP port src range pg_set $dev "flag UDPSRC_RND" pg_set $dev "udp_src_min $UDP_SRC_MIN" pg_set $dev "udp_src_max $UDP_SRC_MAX" done if [ -z "$APPEND" ]; then # start_run echo "Running... ctrl^C to stop" >&2 pg_ctrl "start" echo "Done" >&2 # Print results for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do dev=${DEV}@${thread} echo "Device: $dev" cat /proc/net/pktgen/$dev | grep -A2 "Result:" done else echo "Append mode: config done. Do more or use 'pg_ctrl start' to run" fi