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 if [ -n "$DEST_IP" ]; then
  26     validate_addr $DEST_IP
  27     read -r DST_MIN DST_MAX <<< $(parse_addr $DEST_IP)
  28 fi
  29 if [ -n "$DST_PORT" ]; then
  30     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
  31     validate_ports $UDP_DST_MIN $UDP_DST_MAX
  32 fi
  33
  34 # Base Config
  35 DELAY="0"  # Zero means max speed
  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 <= $L_THREAD; thread++)); do
  42     dev=${DEV}@${thread}
  43
  44     # Add remove all other devices and add_device $dev to thread
  45     pg_thread $thread "rem_device_all"
  46     pg_thread $thread "add_device" $dev
  47
  48     # Base config
  49     pg_set $dev "flag QUEUE_MAP_CPU"
  50     pg_set $dev "count $COUNT"
  51     pg_set $dev "clone_skb $CLONE_SKB"
  52     pg_set $dev "pkt_size $PKT_SIZE"
  53     pg_set $dev "delay $DELAY"
  54     pg_set $dev "flag NO_TIMESTAMP"
  55
  56     # Single destination
  57     pg_set $dev "dst_mac $DST_MAC"
  58     pg_set $dev "dst_min $DST_MIN"
  59     pg_set $dev "dst_max $DST_MAX"
  60
  61     if [ -n "$DST_PORT" ]; then
  62         # Single destination port or random port range
  63         pg_set $dev "flag UDPDST_RND"
  64         pg_set $dev "udp_dst_min $UDP_DST_MIN"
  65         pg_set $dev "udp_dst_max $UDP_DST_MAX"
  66     fi
  67
  68     # Setup source IP-addresses based on thread number
  69     pg_set $dev "src_min 198.18.$((thread+1)).1"
  70     pg_set $dev "src_max 198.18.$((thread+1)).1"
  71
  72     # Setup burst, for easy testing -b 0 disable bursting
  73     # (internally in pktgen default and minimum burst=1)
  74     if [[ ${BURST} -ne 0 ]]; then
  75         pg_set $dev "burst $BURST"
  76     else
  77         info "$dev: Not using burst"
  78     fi
  79
  80 done
  81
  82 # Run if user hits control-c
  83 function print_result() {
  84     # Print results
  85     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  86         dev=${DEV}@${thread}
  87         echo "Device: $dev"
  88         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  89     done
  90 }
  91 # trap keyboard interrupt (Ctrl-C)
  92 trap true SIGINT
  93
  94 echo "Running... ctrl^C to stop" >&2
  95 pg_ctrl "start"
  96
  97 print_result