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