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 "$DEST_IP" ]; then
  26     validate_addr${IP6} $DEST_IP
  27     read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
  28 fi
  29 if [ -n "$DST_PORT" ]; then
  30     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
  31     validate_ports $UDP_DST_MIN $UDP_DST_MAX
  32 fi
  33
  34 # Base Config
  35 DELAY="0"        # Zero means max speed
  36
  37 # Flow variation random source port between min and max
  38 UDP_SRC_MIN=9
  39 UDP_SRC_MAX=109
  40
  41 # General cleanup everything since last run
  42 # (especially important if other threads were configured by other scripts)
  43 pg_ctrl "reset"
  44
  45 # Add remove all other devices and add_device $DEV to thread 0
  46 thread=0
  47 pg_thread $thread "rem_device_all"
  48 pg_thread $thread "add_device" $DEV
  49
  50 # How many packets to send (zero means indefinitely)
  51 pg_set $DEV "count $COUNT"
  52
  53 # Reduce alloc cost by sending same SKB many times
  54 # - this obviously affects the randomness within the packet
  55 pg_set $DEV "clone_skb $CLONE_SKB"
  56
  57 # Set packet size
  58 pg_set $DEV "pkt_size $PKT_SIZE"
  59
  60 # Delay between packets (zero means max speed)
  61 pg_set $DEV "delay $DELAY"
  62
  63 # Flag example disabling timestamping
  64 pg_set $DEV "flag NO_TIMESTAMP"
  65
  66 # Destination
  67 pg_set $DEV "dst_mac $DST_MAC"
  68 pg_set $DEV "dst${IP6}_min $DST_MIN"
  69 pg_set $DEV "dst${IP6}_max $DST_MAX"
  70
  71 if [ -n "$DST_PORT" ]; then
  72     # Single destination port or random port range
  73     pg_set $DEV "flag UDPDST_RND"
  74     pg_set $DEV "udp_dst_min $UDP_DST_MIN"
  75     pg_set $DEV "udp_dst_max $UDP_DST_MAX"
  76 fi
  77
  78 # Setup random UDP port src range
  79 pg_set $DEV "flag UDPSRC_RND"
  80 pg_set $DEV "udp_src_min $UDP_SRC_MIN"
  81 pg_set $DEV "udp_src_max $UDP_SRC_MAX"
  82
  83 # start_run
  84 echo "Running... ctrl^C to stop" >&2
  85 pg_ctrl "start"
  86 echo "Done" >&2
  87
  88 # Print results
  89 echo "Result device: $DEV"
  90 cat /proc/net/pktgen/$DEV