samples/pktgen/parameters.sh

   1 #
   2 # Common parameter parsing for pktgen scripts
   3 #
   4
   5 function usage() {
   6     echo ""
   7     echo "Usage: $0 [-vx] -i ethX"
   8     echo "  -i : (\$DEV)       output interface/device (required)"
   9     echo "  -s : (\$PKT_SIZE)  packet size"
  10     echo "  -d : (\$DEST_IP)   destination IP"
  11     echo "  -m : (\$DST_MAC)   destination MAC-addr"
  12     echo "  -t : (\$THREADS)   threads to start"
  13     echo "  -c : (\$SKB_CLONE) SKB clones send before alloc new SKB"
  14     echo "  -b : (\$BURST)     HW level bursting of SKBs"
  15     echo "  -v : (\$VERBOSE)   verbose"
  16     echo "  -x : (\$DEBUG)     debug"
  17     echo ""
  18 }
  19
  20 ##  --- Parse command line arguments / parameters ---
  21 ## echo "Commandline options:"
  22 while getopts "s:i:d:m:t:c:b:vxh" option; do
  23     case $option in
  24         i) # interface
  25           export DEV=$OPTARG
  26           info "Output device set to: DEV=$DEV"
  27           ;;
  28         s)
  29           export PKT_SIZE=$OPTARG
  30           info "Packet size set to: PKT_SIZE=$PKT_SIZE bytes"
  31           ;;
  32         d) # destination IP
  33           export DEST_IP=$OPTARG
  34           info "Destination IP set to: DEST_IP=$DEST_IP"
  35           ;;
  36         m) # MAC
  37           export DST_MAC=$OPTARG
  38           info "Destination MAC set to: DST_MAC=$DST_MAC"
  39           ;;
  40         t)
  41           export THREADS=$OPTARG
  42           export CPU_THREADS=$OPTARG
  43           let "CPU_THREADS -= 1"
  44           info "Number of threads to start: $THREADS (0 to $CPU_THREADS)"
  45           ;;
  46         c)
  47           export CLONE_SKB=$OPTARG
  48           info "CLONE_SKB=$CLONE_SKB"
  49           ;;
  50         b)
  51           export BURST=$OPTARG
  52           info "SKB bursting: BURST=$BURST"
  53           ;;
  54         v)
  55           export VERBOSE=yes
  56           info "Verbose mode: VERBOSE=$VERBOSE"
  57           ;;
  58         x)
  59           export DEBUG=yes
  60           info "Debug mode: DEBUG=$DEBUG"
  61           ;;
  62         h|?|*)
  63           usage;
  64           err 2 "[ERROR] Unknown parameters!!!"
  65     esac
  66 done
  67 shift $(( $OPTIND - 1 ))
  68
  69 if [ -z "$PKT_SIZE" ]; then
  70     # NIC adds 4 bytes CRC
  71     export PKT_SIZE=60
  72     info "Default packet size set to: set to: $PKT_SIZE bytes"
  73 fi
  74
  75 if [ -z "$THREADS" ]; then
  76     # Zero CPU threads means one thread, because CPU numbers are zero indexed
  77     export CPU_THREADS=0
  78     export THREADS=1
  79 fi
  80
  81 if [ -z "$DEV" ]; then
  82     usage
  83     err 2 "Please specify output device"
  84 fi
  85
  86 if [ -z "$DST_MAC" ]; then
  87     warn "Missing destination MAC address"
  88 fi
  89
  90 if [ -z "$DEST_IP" ]; then
  91     warn "Missing destination IP address"
  92 fi
  93
  94 if [ ! -d /proc/net/pktgen ]; then
  95     info "Loading kernel module: pktgen"
  96     modprobe pktgen
  97 fi