samples/pktgen/pktgen_sample02_multiqueue.sh

0001 #!/bin/bash
0002 # SPDX-License-Identifier: GPL-2.0
0003 #
0004 # Multiqueue: Using pktgen threads for sending on multiple CPUs
0005 #  * adding devices to kernel threads
0006 #  * notice the naming scheme for keeping device names unique
0007 #  * nameing scheme: dev@thread_number
0008 #  * flow variation via random UDP source port
0009 #
0010 basedir=`dirname $0`
0011 source ${basedir}/functions.sh
0012 root_check_run_with_sudo "$@"
0013 #
0014 # Required param: -i dev in $DEV
0015 source ${basedir}/parameters.sh
0016
0017 [ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely
0018
0019 # Base Config
0020 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
0021
0022 # Flow variation random source port between min and max
0023 UDP_SRC_MIN=9
0024 UDP_SRC_MAX=109
0025
0026 # (example of setting default params in your script)
0027 if [ -z "$DEST_IP" ]; then
0028     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
0029 fi
0030 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
0031 if [ -n "$DEST_IP" ]; then
0032     validate_addr${IP6} $DEST_IP
0033     read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
0034 fi
0035 if [ -n "$DST_PORT" ]; then
0036     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
0037     validate_ports $UDP_DST_MIN $UDP_DST_MAX
0038 fi
0039
0040 # General cleanup everything since last run
0041 [ -z "$APPEND" ] && pg_ctrl "reset"
0042
0043 # Threads are specified with parameter -t value in $THREADS
0044 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
0045     # The device name is extended with @name, using thread number to
0046     # make then unique, but any name will do.
0047     dev=${DEV}@${thread}
0048
0049     # Add remove all other devices and add_device $dev to thread
0050     [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
0051     pg_thread $thread "add_device" $dev
0052
0053     # Notice config queue to map to cpu (mirrors smp_processor_id())
0054     # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
0055     pg_set $dev "flag QUEUE_MAP_CPU"
0056
0057     # Base config of dev
0058     pg_set $dev "count $COUNT"
0059     pg_set $dev "clone_skb $CLONE_SKB"
0060     pg_set $dev "pkt_size $PKT_SIZE"
0061     pg_set $dev "delay $DELAY"
0062
0063     # Flag example disabling timestamping
0064     pg_set $dev "flag NO_TIMESTAMP"
0065
0066     # Destination
0067     pg_set $dev "dst_mac $DST_MAC"
0068     pg_set $dev "dst${IP6}_min $DST_MIN"
0069     pg_set $dev "dst${IP6}_max $DST_MAX"
0070
0071     if [ -n "$DST_PORT" ]; then
0072         # Single destination port or random port range
0073         pg_set $dev "flag UDPDST_RND"
0074         pg_set $dev "udp_dst_min $UDP_DST_MIN"
0075         pg_set $dev "udp_dst_max $UDP_DST_MAX"
0076     fi
0077
0078     [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
0079
0080     # Setup random UDP port src range
0081     pg_set $dev "flag UDPSRC_RND"
0082     pg_set $dev "udp_src_min $UDP_SRC_MIN"
0083     pg_set $dev "udp_src_max $UDP_SRC_MAX"
0084 done
0085
0086 # Run if user hits control-c
0087 function print_result() {
0088     # Print results
0089     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
0090         dev=${DEV}@${thread}
0091         echo "Device: $dev"
0092         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
0093     done
0094 }
0095 # trap keyboard interrupt (Ctrl-C)
0096 trap true SIGINT
0097
0098 if [ -z "$APPEND" ]; then
0099     # start_run
0100     echo "Running... ctrl^C to stop" >&2
0101     pg_ctrl "start"
0102     echo "Done" >&2
0103
0104     print_result
0105 else
0106     echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
0107 fi