1#
2# SPDX-License-Identifier: GPL-2.0
3# Common parameter parsing for pktgen scripts
4#
5
6function usage() {
7    echo ""
8    echo "Usage: $0 [-vx] -i ethX"
9    echo "  -i : (\$DEV)       output interface/device (required)"
10    echo "  -s : (\$PKT_SIZE)  packet size"
11    echo "  -d : (\$DEST_IP)   destination IP"
12    echo "  -m : (\$DST_MAC)   destination MAC-addr"
13    echo "  -p : (\$DST_PORT)  destination PORT range (e.g. 433-444) is also allowed"
14    echo "  -t : (\$THREADS)   threads to start"
15    echo "  -f : (\$F_THREAD)  index of first thread (zero indexed CPU number)"
16    echo "  -c : (\$SKB_CLONE) SKB clones send before alloc new SKB"
17    echo "  -n : (\$COUNT)     num messages to send per thread, 0 means indefinitely"
18    echo "  -b : (\$BURST)     HW level bursting of SKBs"
19    echo "  -v : (\$VERBOSE)   verbose"
20    echo "  -x : (\$DEBUG)     debug"
21    echo "  -6 : (\$IP6)       IPv6"
22    echo ""
23}
24
25##  --- Parse command line arguments / parameters ---
26## echo "Commandline options:"
27while getopts "s:i:d:m:p:f:t:c:n:b:vxh6" option; do
28    case $option in
29        i) # interface
30          export DEV=$OPTARG
31	  info "Output device set to: DEV=$DEV"
32          ;;
33        s)
34          export PKT_SIZE=$OPTARG
35	  info "Packet size set to: PKT_SIZE=$PKT_SIZE bytes"
36          ;;
37        d) # destination IP
38          export DEST_IP=$OPTARG
39	  info "Destination IP set to: DEST_IP=$DEST_IP"
40          ;;
41        m) # MAC
42          export DST_MAC=$OPTARG
43	  info "Destination MAC set to: DST_MAC=$DST_MAC"
44          ;;
45        p) # PORT
46          export DST_PORT=$OPTARG
47	  info "Destination PORT set to: DST_PORT=$DST_PORT"
48          ;;
49        f)
50	  export F_THREAD=$OPTARG
51	  info "Index of first thread (zero indexed CPU number): $F_THREAD"
52          ;;
53        t)
54	  export THREADS=$OPTARG
55	  info "Number of threads to start: $THREADS"
56          ;;
57        c)
58	  export CLONE_SKB=$OPTARG
59	  info "CLONE_SKB=$CLONE_SKB"
60          ;;
61        n)
62	  export COUNT=$OPTARG
63	  info "COUNT=$COUNT"
64          ;;
65        b)
66	  export BURST=$OPTARG
67	  info "SKB bursting: BURST=$BURST"
68          ;;
69        v)
70          export VERBOSE=yes
71          info "Verbose mode: VERBOSE=$VERBOSE"
72          ;;
73        x)
74          export DEBUG=yes
75          info "Debug mode: DEBUG=$DEBUG"
76          ;;
77	6)
78	  export IP6=6
79	  info "IP6: IP6=$IP6"
80	  ;;
81        h|?|*)
82          usage;
83          err 2 "[ERROR] Unknown parameters!!!"
84    esac
85done
86shift $(( $OPTIND - 1 ))
87
88if [ -z "$PKT_SIZE" ]; then
89    # NIC adds 4 bytes CRC
90    export PKT_SIZE=60
91    info "Default packet size set to: set to: $PKT_SIZE bytes"
92fi
93
94if [ -z "$F_THREAD" ]; then
95    # First thread (F_THREAD) reference the zero indexed CPU number
96    export F_THREAD=0
97fi
98
99if [ -z "$THREADS" ]; then
100    export THREADS=1
101fi
102
103export L_THREAD=$(( THREADS + F_THREAD - 1 ))
104
105if [ -z "$DEV" ]; then
106    usage
107    err 2 "Please specify output device"
108fi
109
110if [ -z "$DST_MAC" ]; then
111    warn "Missing destination MAC address"
112fi
113
114if [ -z "$DEST_IP" ]; then
115    warn "Missing destination IP address"
116fi
117
118if [ ! -d /proc/net/pktgen ]; then
119    info "Loading kernel module: pktgen"
120    modprobe pktgen
121fi
122