samples/pktgen/pktgen_sample04_many_flows.sh

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