samples/pktgen/pktgen_sample05_flow_per_thread.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Script will generate one flow per thread (-t N)
   5 #  - Same destination IP
   6 #  - Fake source IPs for each flow (fixed based on thread number)
   7 #
   8 # Useful for scale testing on receiver, to see whether silo'ing flows
   9 # works and scales.  For optimal scalability (on receiver) each
  10 # separate-flow should not access shared variables/data. This script
  11 # helps magnify any of these scaling issues by overloading the receiver.
  12 #
  13 basedir=`dirname $0`
  14 source ${basedir}/functions.sh
  15 root_check_run_with_sudo "$@"
  16
  17 # Parameter parsing via include
  18 source ${basedir}/parameters.sh
  19 # Set some default params, if they didn't get set
  20 [ -z "$DEST_IP" ]   && DEST_IP="198.18.0.42"
  21 [ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
  22 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  23 [ -z "$BURST" ]     && BURST=32
  24 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
  25
  26
  27 # Base Config
  28 DELAY="0"  # Zero means max speed
  29
  30 # General cleanup everything since last run
  31 pg_ctrl "reset"
  32
  33 # Threads are specified with parameter -t value in $THREADS
  34 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  35     dev=${DEV}@${thread}
  36
  37     # Add remove all other devices and add_device $dev to thread
  38     pg_thread $thread "rem_device_all"
  39     pg_thread $thread "add_device" $dev
  40
  41     # Base config
  42     pg_set $dev "flag QUEUE_MAP_CPU"
  43     pg_set $dev "count $COUNT"
  44     pg_set $dev "clone_skb $CLONE_SKB"
  45     pg_set $dev "pkt_size $PKT_SIZE"
  46     pg_set $dev "delay $DELAY"
  47     pg_set $dev "flag NO_TIMESTAMP"
  48
  49     # Single destination
  50     pg_set $dev "dst_mac $DST_MAC"
  51     pg_set $dev "dst $DEST_IP"
  52
  53     # Setup source IP-addresses based on thread number
  54     pg_set $dev "src_min 198.18.$((thread+1)).1"
  55     pg_set $dev "src_max 198.18.$((thread+1)).1"
  56
  57     # Setup burst, for easy testing -b 0 disable bursting
  58     # (internally in pktgen default and minimum burst=1)
  59     if [[ ${BURST} -ne 0 ]]; then
  60         pg_set $dev "burst $BURST"
  61     else
  62         info "$dev: Not using burst"
  63     fi
  64
  65 done
  66
  67 # Run if user hits control-c
  68 function print_result() {
  69     # Print results
  70     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  71         dev=${DEV}@${thread}
  72         echo "Device: $dev"
  73         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  74     done
  75 }
  76 # trap keyboard interrupt (Ctrl-C)
  77 trap true SIGINT
  78
  79 echo "Running... ctrl^C to stop" >&2
  80 pg_ctrl "start"
  81
  82 print_result