samples/pktgen/pktgen_sample02_multiqueue.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   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
   9 #
  10 basedir=`dirname $0`
  11 source ${basedir}/functions.sh
  12 root_check_run_with_sudo "$@"
  13 #
  14 # Required param: -i dev in $DEV
  15 source ${basedir}/parameters.sh
  16
  17 [ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely
  18
  19 # Base Config
  20 DELAY="0"        # Zero means max speed
  21 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  22
  23 # Flow variation random source port between min and max
  24 UDP_SRC_MIN=9
  25 UDP_SRC_MAX=109
  26
  27 # (example of setting default params in your script)
  28 if [ -z "$DEST_IP" ]; then
  29     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
  30 fi
  31 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
  32 if [ -n "$DEST_IP" ]; then
  33     validate_addr${IP6} $DEST_IP
  34     read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
  35 fi
  36 if [ -n "$DST_PORT" ]; then
  37     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
  38     validate_ports $UDP_DST_MIN $UDP_DST_MAX
  39 fi
  40
  41 # General cleanup everything since last run
  42 pg_ctrl "reset"
  43
  44 # Threads are specified with parameter -t value in $THREADS
  45 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  46     # The device name is extended with @name, using thread number to
  47     # make then unique, but any name will do.
  48     dev=${DEV}@${thread}
  49
  50     # Add remove all other devices and add_device $dev to thread
  51     pg_thread $thread "rem_device_all"
  52     pg_thread $thread "add_device" $dev
  53
  54     # Notice config queue to map to cpu (mirrors smp_processor_id())
  55     # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
  56     pg_set $dev "flag QUEUE_MAP_CPU"
  57
  58     # Base config of dev
  59     pg_set $dev "count $COUNT"
  60     pg_set $dev "clone_skb $CLONE_SKB"
  61     pg_set $dev "pkt_size $PKT_SIZE"
  62     pg_set $dev "delay $DELAY"
  63
  64     # Flag example disabling timestamping
  65     pg_set $dev "flag NO_TIMESTAMP"
  66
  67     # Destination
  68     pg_set $dev "dst_mac $DST_MAC"
  69     pg_set $dev "dst${IP6}_min $DST_MIN"
  70     pg_set $dev "dst${IP6}_max $DST_MAX"
  71
  72     if [ -n "$DST_PORT" ]; then
  73         # Single destination port or random port range
  74         pg_set $dev "flag UDPDST_RND"
  75         pg_set $dev "udp_dst_min $UDP_DST_MIN"
  76         pg_set $dev "udp_dst_max $UDP_DST_MAX"
  77     fi
  78
  79     # Setup random UDP port src range
  80     pg_set $dev "flag UDPSRC_RND"
  81     pg_set $dev "udp_src_min $UDP_SRC_MIN"
  82     pg_set $dev "udp_src_max $UDP_SRC_MAX"
  83 done
  84
  85 # start_run
  86 echo "Running... ctrl^C to stop" >&2
  87 pg_ctrl "start"
  88 echo "Done" >&2
  89
  90 # Print results
  91 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  92     dev=${DEV}@${thread}
  93     echo "Device: $dev"
  94     cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  95 done