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 " -a : (\$APPEND) Script will not reset generator's state, but will append its config" 24 echo "" 25} 26 27## --- Parse command line arguments / parameters --- 28## echo "Commandline options:" 29while getopts "s:i:d:m:p:f:t:c:n:b:w:vxh6a" option; do 30 case $option in 31 i) # interface 32 export DEV=$OPTARG 33 info "Output device set to: DEV=$DEV" 34 ;; 35 s) 36 export PKT_SIZE=$OPTARG 37 info "Packet size set to: PKT_SIZE=$PKT_SIZE bytes" 38 ;; 39 d) # destination IP 40 export DEST_IP=$OPTARG 41 info "Destination IP set to: DEST_IP=$DEST_IP" 42 ;; 43 m) # MAC 44 export DST_MAC=$OPTARG 45 info "Destination MAC set to: DST_MAC=$DST_MAC" 46 ;; 47 p) # PORT 48 export DST_PORT=$OPTARG 49 info "Destination PORT set to: DST_PORT=$DST_PORT" 50 ;; 51 f) 52 export F_THREAD=$OPTARG 53 info "Index of first thread (zero indexed CPU number): $F_THREAD" 54 ;; 55 t) 56 export THREADS=$OPTARG 57 info "Number of threads to start: $THREADS" 58 ;; 59 c) 60 export CLONE_SKB=$OPTARG 61 info "CLONE_SKB=$CLONE_SKB" 62 ;; 63 n) 64 export COUNT=$OPTARG 65 info "COUNT=$COUNT" 66 ;; 67 b) 68 export BURST=$OPTARG 69 info "SKB bursting: BURST=$BURST" 70 ;; 71 w) 72 export DELAY=$OPTARG 73 info "DELAY=$DELAY" 74 ;; 75 v) 76 export VERBOSE=yes 77 info "Verbose mode: VERBOSE=$VERBOSE" 78 ;; 79 x) 80 export DEBUG=yes 81 info "Debug mode: DEBUG=$DEBUG" 82 ;; 83 6) 84 export IP6=6 85 info "IP6: IP6=$IP6" 86 ;; 87 a) 88 export APPEND=yes 89 info "Append mode: APPEND=$APPEND" 90 ;; 91 h|?|*) 92 usage; 93 err 2 "[ERROR] Unknown parameters!!!" 94 esac 95done 96shift $(( $OPTIND - 1 )) 97 98if [ -z "$PKT_SIZE" ]; then 99 # NIC adds 4 bytes CRC 100 export PKT_SIZE=60 101 info "Default packet size set to: set to: $PKT_SIZE bytes" 102fi 103 104if [ -z "$F_THREAD" ]; then 105 # First thread (F_THREAD) reference the zero indexed CPU number 106 export F_THREAD=0 107fi 108 109if [ -z "$THREADS" ]; then 110 export THREADS=1 111fi 112 113# default DELAY 114[ -z "$DELAY" ] && export DELAY=0 # Zero means max speed 115 116export L_THREAD=$(( THREADS + F_THREAD - 1 )) 117 118if [ -z "$DEV" ]; then 119 usage 120 err 2 "Please specify output device" 121fi 122 123if [ -z "$DST_MAC" ]; then 124 warn "Missing destination MAC address" 125fi 126 127if [ -z "$DEST_IP" ]; then 128 warn "Missing destination IP address" 129fi 130 131if [ ! -d /proc/net/pktgen ]; then 132 info "Loading kernel module: pktgen" 133 modprobe pktgen 134fi 135