samples/pktgen/pktgen_sample01_simple.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Simple example:
   5 #  * pktgen sending with single thread and single interface
   6 #  * flow variation via random UDP source port
   7 #
   8 basedir=`dirname $0`
   9 source ${basedir}/functions.sh
  10 root_check_run_with_sudo "$@"
  11
  12 # Parameter parsing via include
  13 # - go look in parameters.sh to see which setting are avail
  14 # - required param is the interface "-i" stored in $DEV
  15 source ${basedir}/parameters.sh
  16 #
  17 # Set some default params, if they didn't get set
  18 if [ -z "$DEST_IP" ]; then
  19     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
  20 fi
  21 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  22 # Example enforce param "-m" for dst_mac
  23 [ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
  24 [ -z "$COUNT" ]   && COUNT="100000" # Zero means indefinitely
  25 if [ -n "$DST_PORT" ]; then
  26     read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
  27     validate_ports $DST_MIN $DST_MAX
  28 fi
  29
  30 # Base Config
  31 DELAY="0"        # Zero means max speed
  32
  33 # Flow variation random source port between min and max
  34 UDP_MIN=9
  35 UDP_MAX=109
  36
  37 # General cleanup everything since last run
  38 # (especially important if other threads were configured by other scripts)
  39 pg_ctrl "reset"
  40
  41 # Add remove all other devices and add_device $DEV to thread 0
  42 thread=0
  43 pg_thread $thread "rem_device_all"
  44 pg_thread $thread "add_device" $DEV
  45
  46 # How many packets to send (zero means indefinitely)
  47 pg_set $DEV "count $COUNT"
  48
  49 # Reduce alloc cost by sending same SKB many times
  50 # - this obviously affects the randomness within the packet
  51 pg_set $DEV "clone_skb $CLONE_SKB"
  52
  53 # Set packet size
  54 pg_set $DEV "pkt_size $PKT_SIZE"
  55
  56 # Delay between packets (zero means max speed)
  57 pg_set $DEV "delay $DELAY"
  58
  59 # Flag example disabling timestamping
  60 pg_set $DEV "flag NO_TIMESTAMP"
  61
  62 # Destination
  63 pg_set $DEV "dst_mac $DST_MAC"
  64 pg_set $DEV "dst$IP6 $DEST_IP"
  65
  66 if [ -n "$DST_PORT" ]; then
  67     # Single destination port or random port range
  68     pg_set $DEV "flag UDPDST_RND"
  69     pg_set $DEV "udp_dst_min $DST_MIN"
  70     pg_set $DEV "udp_dst_max $DST_MAX"
  71 fi
  72
  73 # Setup random UDP port src range
  74 pg_set $DEV "flag UDPSRC_RND"
  75 pg_set $DEV "udp_src_min $UDP_MIN"
  76 pg_set $DEV "udp_src_max $UDP_MAX"
  77
  78 # start_run
  79 echo "Running... ctrl^C to stop" >&2
  80 pg_ctrl "start"
  81 echo "Done" >&2
  82
  83 # Print results
  84 echo "Result device: $DEV"
  85 cat /proc/net/pktgen/$DEV