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 ${basedir}/parameters.sh
  19
  20 # Trap EXIT first
  21 trap_exit
  22
  23 # Set some default params, if they didn't get set
  24 if [ -z "$DEST_IP" ]; then
  25     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
  26 fi
  27 [ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
  28 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  29 [ -z "$BURST" ]     && BURST=32
  30 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
  31 if [ -n "$DEST_IP" ]; then
  32     validate_addr${IP6} $DEST_IP
  33     read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
  34 fi
  35 if [ -n "$DST_PORT" ]; then
  36     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
  37     validate_ports $UDP_DST_MIN $UDP_DST_MAX
  38 fi
  39
  40 # General cleanup everything since last run
  41 [ -z "$APPEND" ] && pg_ctrl "reset"
  42
  43 # Threads are specified with parameter -t value in $THREADS
  44 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  45     dev=${DEV}@${thread}
  46
  47     # Add remove all other devices and add_device $dev to thread
  48     [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
  49     pg_thread $thread "add_device" $dev
  50
  51     # Base config
  52     pg_set $dev "flag QUEUE_MAP_CPU"
  53     pg_set $dev "count $COUNT"
  54     pg_set $dev "clone_skb $CLONE_SKB"
  55     pg_set $dev "pkt_size $PKT_SIZE"
  56     pg_set $dev "delay $DELAY"
  57     pg_set $dev "flag NO_TIMESTAMP"
  58
  59     # Single destination
  60     pg_set $dev "dst_mac $DST_MAC"
  61     pg_set $dev "dst${IP6}_min $DST_MIN"
  62     pg_set $dev "dst${IP6}_max $DST_MAX"
  63
  64     if [ -n "$DST_PORT" ]; then
  65         # Single destination port or random port range
  66         pg_set $dev "flag UDPDST_RND"
  67         pg_set $dev "udp_dst_min $UDP_DST_MIN"
  68         pg_set $dev "udp_dst_max $UDP_DST_MAX"
  69     fi
  70
  71     [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
  72
  73     # Setup source IP-addresses based on thread number
  74     pg_set $dev "src_min 198.18.$((thread+1)).1"
  75     pg_set $dev "src_max 198.18.$((thread+1)).1"
  76
  77     # Setup burst, for easy testing -b 0 disable bursting
  78     # (internally in pktgen default and minimum burst=1)
  79     if [[ ${BURST} -ne 0 ]]; then
  80         pg_set $dev "burst $BURST"
  81     else
  82         info "$dev: Not using burst"
  83     fi
  84
  85 done
  86
  87 # Run if user hits control-c
  88 function print_result() {
  89     # Print results
  90     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  91         dev=${DEV}@${thread}
  92         echo "Device: $dev"
  93         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  94     done
  95 }
  96 # trap keyboard interrupt (Ctrl-C)
  97 trap true SIGINT
  98
  99 if [ -z "$APPEND" ]; then
 100     echo "Running... ctrl^C to stop" >&2
 101     pg_ctrl "start"
 102
 103     print_result
 104 else
 105     echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
 106 fi