samples/pktgen/pktgen_sample01_simple.sh

   1 #!/bin/bash
   2 #
   3 # Simple example:
   4 #  * pktgen sending with single thread and single interface
   5 #  * flow variation via random UDP source port
   6 #
   7 basedir=`dirname $0`
   8 source ${basedir}/functions.sh
   9 root_check_run_with_sudo "$@"
  10
  11 # Parameter parsing via include
  12 # - go look in parameters.sh to see which setting are avail
  13 # - required param is the interface "-i" stored in $DEV
  14 source ${basedir}/parameters.sh
  15 #
  16 # Set some default params, if they didn't get set
  17 [ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
  18 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  19 # Example enforce param "-m" for dst_mac
  20 [ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
  21
  22 # Base Config
  23 DELAY="0"        # Zero means max speed
  24 COUNT="100000"   # Zero means indefinitely
  25
  26 # Flow variation random source port between min and max
  27 UDP_MIN=9
  28 UDP_MAX=109
  29
  30 # General cleanup everything since last run
  31 # (especially important if other threads were configured by other scripts)
  32 pg_ctrl "reset"
  33
  34 # Add remove all other devices and add_device $DEV to thread 0
  35 thread=0
  36 pg_thread $thread "rem_device_all"
  37 pg_thread $thread "add_device" $DEV
  38
  39 # How many packets to send (zero means indefinitely)
  40 pg_set $DEV "count $COUNT"
  41
  42 # Reduce alloc cost by sending same SKB many times
  43 # - this obviously affects the randomness within the packet
  44 pg_set $DEV "clone_skb $CLONE_SKB"
  45
  46 # Set packet size
  47 pg_set $DEV "pkt_size $PKT_SIZE"
  48
  49 # Delay between packets (zero means max speed)
  50 pg_set $DEV "delay $DELAY"
  51
  52 # Flag example disabling timestamping
  53 pg_set $DEV "flag NO_TIMESTAMP"
  54
  55 # Destination
  56 pg_set $DEV "dst_mac $DST_MAC"
  57 pg_set $DEV "dst $DEST_IP"
  58
  59 # Setup random UDP port src range
  60 pg_set $DEV "flag UDPSRC_RND"
  61 pg_set $DEV "udp_src_min $UDP_MIN"
  62 pg_set $DEV "udp_src_max $UDP_MAX"
  63
  64 # start_run
  65 echo "Running... ctrl^C to stop" >&2
  66 pg_ctrl "start"
  67 echo "Done" >&2
  68
  69 # Print results
  70 echo "Result device: $DEV"
  71 cat /proc/net/pktgen/$DEV