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. CIDR (e.g. 198.18.0.0/15) is also allowed" 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 " -w : (\$DELAY) Tx Delay value (ns)" 23 echo "" 24} 25 26## --- Parse command line arguments / parameters --- 27## echo "Commandline options:" 28while getopts "s:i:d:m:p:f:t:c:n:b:w:vxh6" option; do 29 case $option in 30 i) # interface 31 export DEV=$OPTARG 32 info "Output device set to: DEV=$DEV" 33 ;; 34 s) 35 export PKT_SIZE=$OPTARG 36 info "Packet size set to: PKT_SIZE=$PKT_SIZE bytes" 37 ;; 38 d) # destination IP 39 export DEST_IP=$OPTARG 40 info "Destination IP set to: DEST_IP=$DEST_IP" 41 ;; 42 m) # MAC 43 export DST_MAC=$OPTARG 44 info "Destination MAC set to: DST_MAC=$DST_MAC" 45 ;; 46 p) # PORT 47 export DST_PORT=$OPTARG 48 info "Destination PORT set to: DST_PORT=$DST_PORT" 49 ;; 50 f) 51 export F_THREAD=$OPTARG 52 info "Index of first thread (zero indexed CPU number): $F_THREAD" 53 ;; 54 t) 55 export THREADS=$OPTARG 56 info "Number of threads to start: $THREADS" 57 ;; 58 c) 59 export CLONE_SKB=$OPTARG 60 info "CLONE_SKB=$CLONE_SKB" 61 ;; 62 n) 63 export COUNT=$OPTARG 64 info "COUNT=$COUNT" 65 ;; 66 b) 67 export BURST=$OPTARG 68 info "SKB bursting: BURST=$BURST" 69 ;; 70 w) 71 export DELAY=$OPTARG 72 info "DELAY=$DELAY" 73 ;; 74 v) 75 export VERBOSE=yes 76 info "Verbose mode: VERBOSE=$VERBOSE" 77 ;; 78 x) 79 export DEBUG=yes 80 info "Debug mode: DEBUG=$DEBUG" 81 ;; 82 6) 83 export IP6=6 84 info "IP6: IP6=$IP6" 85 ;; 86 h|?|*) 87 usage; 88 err 2 "[ERROR] Unknown parameters!!!" 89 esac 90done 91shift $(( $OPTIND - 1 )) 92 93if [ -z "$PKT_SIZE" ]; then 94 # NIC adds 4 bytes CRC 95 export PKT_SIZE=60 96 info "Default packet size set to: set to: $PKT_SIZE bytes" 97fi 98 99if [ -z "$F_THREAD" ]; then 100 # First thread (F_THREAD) reference the zero indexed CPU number 101 export F_THREAD=0 102fi 103 104if [ -z "$THREADS" ]; then 105 export THREADS=1 106fi 107 108# default DELAY 109[ -z "$DELAY" ] && export DELAY=0 # Zero means max speed 110 111export L_THREAD=$(( THREADS + F_THREAD - 1 )) 112 113if [ -z "$DEV" ]; then 114 usage 115 err 2 "Please specify output device" 116fi 117 118if [ -z "$DST_MAC" ]; then 119 warn "Missing destination MAC address" 120fi 121 122if [ -z "$DEST_IP" ]; then 123 warn "Missing destination IP address" 124fi 125 126if [ ! -d /proc/net/pktgen ]; then 127 info "Loading kernel module: pktgen" 128 modprobe pktgen 129fi 130