xref: /linux/samples/pktgen/pktgen_sample02_multiqueue.sh (revision ca55b2fef3a9373fcfc30f82fd26bc7fccbda732) 
1#!/bin/bash
2#
3# Multiqueue: Using pktgen threads for sending on multiple CPUs
4#  * adding devices to kernel threads
5#  * notice the naming scheme for keeping device names unique
6#  * nameing scheme: dev@thread_number
7#  * flow variation via random UDP source port
8#
9basedir=`dirname $0`
10source ${basedir}/functions.sh
11root_check_run_with_sudo "$@"
12#
13# Required param: -i dev in $DEV
14source ${basedir}/parameters.sh
15
16# Base Config
17DELAY="0"        # Zero means max speed
18COUNT="100000"   # Zero means indefinitely
19[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
20
21# Flow variation random source port between min and max
22UDP_MIN=9
23UDP_MAX=109
24
25# (example of setting default params in your script)
26[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
27[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
28
29# General cleanup everything since last run
30pg_ctrl "reset"
31
32# Threads are specified with parameter -t value in $THREADS
33for ((thread = 0; thread < $THREADS; thread++)); do
34    # The device name is extended with @name, using thread number to
35    # make then unique, but any name will do.
36    dev=${DEV}@${thread}
37
38    # Add remove all other devices and add_device $dev to thread
39    pg_thread $thread "rem_device_all"
40    pg_thread $thread "add_device" $dev
41
42    # Notice config queue to map to cpu (mirrors smp_processor_id())
43    # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
44    pg_set $dev "flag QUEUE_MAP_CPU"
45
46    # Base config of dev
47    pg_set $dev "count $COUNT"
48    pg_set $dev "clone_skb $CLONE_SKB"
49    pg_set $dev "pkt_size $PKT_SIZE"
50    pg_set $dev "delay $DELAY"
51
52    # Flag example disabling timestamping
53    pg_set $dev "flag NO_TIMESTAMP"
54
55    # Destination
56    pg_set $dev "dst_mac $DST_MAC"
57    pg_set $dev "dst $DEST_IP"
58
59    # Setup random UDP port src range
60    pg_set $dev "flag UDPSRC_RND"
61    pg_set $dev "udp_src_min $UDP_MIN"
62    pg_set $dev "udp_src_max $UDP_MAX"
63done
64
65# start_run
66echo "Running... ctrl^C to stop" >&2
67pg_ctrl "start"
68echo "Done" >&2
69
70# Print results
71for ((thread = 0; thread < $THREADS; thread++)); do
72    dev=${DEV}@${thread}
73    echo "Device: $dev"
74    cat /proc/net/pktgen/$dev | grep -A2 "Result:"
75done
76