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 "$CLONE_SKB" ] && CLONE_SKB="0"
  22
  23 # Flow variation random source port between min and max
  24 UDP_MIN=9
  25 UDP_MAX=109
  26
  27 # (example of setting default params in your script)
  28 if [ -z "$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 "$DST_PORT" ]; then
  33     read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
  34     validate_ports $DST_MIN $DST_MAX
  35 fi
  36
  37 # General cleanup everything since last run
  38 pg_ctrl "reset"
  39
  40 # Threads are specified with parameter -t value in $THREADS
  41 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  42     # The device name is extended with @name, using thread number to
  43     # make then unique, but any name will do.
  44     dev=${DEV}@${thread}
  45
  46     # Add remove all other devices and add_device $dev to thread
  47     pg_thread $thread "rem_device_all"
  48     pg_thread $thread "add_device" $dev
  49
  50     # Notice config queue to map to cpu (mirrors smp_processor_id())
  51     # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
  52     pg_set $dev "flag QUEUE_MAP_CPU"
  53
  54     # Base config of dev
  55     pg_set $dev "count $COUNT"
  56     pg_set $dev "clone_skb $CLONE_SKB"
  57     pg_set $dev "pkt_size $PKT_SIZE"
  58     pg_set $dev "delay $DELAY"
  59
  60     # Flag example disabling timestamping
  61     pg_set $dev "flag NO_TIMESTAMP"
  62
  63     # Destination
  64     pg_set $dev "dst_mac $DST_MAC"
  65     pg_set $dev "dst$IP6 $DEST_IP"
  66
  67     if [ -n "$DST_PORT" ]; then
  68         # Single destination port or random port range
  69         pg_set $dev "flag UDPDST_RND"
  70         pg_set $dev "udp_dst_min $DST_MIN"
  71         pg_set $dev "udp_dst_max $DST_MAX"
  72     fi
  73
  74     # Setup random UDP port src range
  75     pg_set $dev "flag UDPSRC_RND"
  76     pg_set $dev "udp_src_min $UDP_MIN"
  77     pg_set $dev "udp_src_max $UDP_MAX"
  78 done
  79
  80 # start_run
  81 echo "Running... ctrl^C to stop" >&2
  82 pg_ctrl "start"
  83 echo "Done" >&2
  84
  85 # Print results
  86 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  87     dev=${DEV}@${thread}
  88     echo "Device: $dev"
  89     cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  90 done