samples/pktgen/pktgen_sample04_many_flows.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Script example for many flows testing
   5 #
   6 # Number of simultaneous flows limited by variable $FLOWS
   7 # and number of packets per flow controlled by variable $FLOWLEN
   8 #
   9 basedir=`dirname $0`
  10 source ${basedir}/functions.sh
  11 root_check_run_with_sudo "$@"
  12
  13 # Parameter parsing via include
  14 source ${basedir}/parameters.sh
  15 # Set some default params, if they didn't get set
  16 [ -z "$DEST_IP" ]   && DEST_IP="198.18.0.42"
  17 [ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
  18 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  19 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
  20
  21 # NOTICE:  Script specific settings
  22 # =======
  23 # Limiting the number of concurrent flows ($FLOWS)
  24 # and also set how many packets each flow contains ($FLOWLEN)
  25 #
  26 [ -z "$FLOWS" ]     && FLOWS="8000"
  27 [ -z "$FLOWLEN" ]   && FLOWLEN="10"
  28
  29 # Base Config
  30 DELAY="0"  # Zero means max speed
  31
  32 if [[ -n "$BURST" ]]; then
  33     err 1 "Bursting not supported for this mode"
  34 fi
  35
  36 # General cleanup everything since last run
  37 pg_ctrl "reset"
  38
  39 # Threads are specified with parameter -t value in $THREADS
  40 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  41     dev=${DEV}@${thread}
  42
  43     # Add remove all other devices and add_device $dev to thread
  44     pg_thread $thread "rem_device_all"
  45     pg_thread $thread "add_device" $dev
  46
  47     # Base config
  48     pg_set $dev "flag QUEUE_MAP_CPU"
  49     pg_set $dev "count $COUNT"
  50     pg_set $dev "clone_skb $CLONE_SKB"
  51     pg_set $dev "pkt_size $PKT_SIZE"
  52     pg_set $dev "delay $DELAY"
  53     pg_set $dev "flag NO_TIMESTAMP"
  54
  55     # Single destination
  56     pg_set $dev "dst_mac $DST_MAC"
  57     pg_set $dev "dst $DEST_IP"
  58
  59     # Randomize source IP-addresses
  60     pg_set $dev "flag IPSRC_RND"
  61     pg_set $dev "src_min 198.18.0.0"
  62     pg_set $dev "src_max 198.19.255.255"
  63
  64     # Limit number of flows (max 65535)
  65     pg_set $dev "flows $FLOWS"
  66     #
  67     # How many packets a flow will send, before flow "entry" is
  68     # re-generated/setup.
  69     pg_set $dev "flowlen $FLOWLEN"
  70     #
  71     # Flag FLOW_SEQ will cause $FLOWLEN packets from the same flow
  72     # being send back-to-back, before next flow is selected
  73     # incrementally.  This helps lookup caches, and is more realistic.
  74     #
  75     pg_set $dev "flag FLOW_SEQ"
  76
  77 done
  78
  79 # Run if user hits control-c
  80 function print_result() {
  81     # Print results
  82     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  83         dev=${DEV}@${thread}
  84         echo "Device: $dev"
  85         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  86     done
  87 }
  88 # trap keyboard interrupt (Ctrl-C)
  89 trap true SIGINT
  90
  91 echo "Running... ctrl^C to stop" >&2
  92 pg_ctrl "start"
  93
  94 print_result