2 # SPDX-License-Identifier: GPL-2.0
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
11 source ${basedir}/functions.sh
12 root_check_run_with_sudo "$@"
14 # Required param: -i dev in $DEV
15 source ${basedir}/parameters.sh
17 [ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely
20 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
22 # Flow variation random source port between min and max
26 # (example of setting default params in your script)
27 if [ -z "$DEST_IP" ]; then
28 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
30 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
31 if [ -n "$DEST_IP" ]; then
32 validate_addr${IP6} $DEST_IP
33 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
35 if [ -n "$DST_PORT" ]; then
36 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
37 validate_ports $UDP_DST_MIN $UDP_DST_MAX
40 # General cleanup everything since last run
41 [ -z "$APPEND" ] && pg_ctrl "reset"
43 # Threads are specified with parameter -t value in $THREADS
44 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
45 # The device name is extended with @name, using thread number to
46 # make then unique, but any name will do.
49 # Add remove all other devices and add_device $dev to thread
50 [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
51 pg_thread $thread "add_device" $dev
53 # Notice config queue to map to cpu (mirrors smp_processor_id())
54 # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
55 pg_set $dev "flag QUEUE_MAP_CPU"
58 pg_set $dev "count $COUNT"
59 pg_set $dev "clone_skb $CLONE_SKB"
60 pg_set $dev "pkt_size $PKT_SIZE"
61 pg_set $dev "delay $DELAY"
63 # Flag example disabling timestamping
64 pg_set $dev "flag NO_TIMESTAMP"
67 pg_set $dev "dst_mac $DST_MAC"
68 pg_set $dev "dst${IP6}_min $DST_MIN"
69 pg_set $dev "dst${IP6}_max $DST_MAX"
71 if [ -n "$DST_PORT" ]; then
72 # Single destination port or random port range
73 pg_set $dev "flag UDPDST_RND"
74 pg_set $dev "udp_dst_min $UDP_DST_MIN"
75 pg_set $dev "udp_dst_max $UDP_DST_MAX"
78 [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
80 # Setup random UDP port src range
81 pg_set $dev "flag UDPSRC_RND"
82 pg_set $dev "udp_src_min $UDP_SRC_MIN"
83 pg_set $dev "udp_src_max $UDP_SRC_MAX"
86 # Run if user hits control-c
87 function print_result() {
89 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
92 cat /proc/net/pktgen/$dev | grep -A2 "Result:"
95 # trap keyboard interrupt (Ctrl-C)
98 if [ -z "$APPEND" ]; then
100 echo "Running... ctrl^C to stop" >&2
106 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"