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 " -k : (\$UDP_CSUM) enable UDP tx checksum" 15 echo " -t : (\$THREADS) threads to start" 16 echo " -f : (\$F_THREAD) index of first thread (zero indexed CPU number)" 17 echo " -c : (\$SKB_CLONE) SKB clones send before alloc new SKB" 18 echo " -n : (\$COUNT) num messages to send per thread, 0 means indefinitely" 19 echo " -b : (\$BURST) HW level bursting of SKBs" 20 echo " -v : (\$VERBOSE) verbose" 21 echo " -x : (\$DEBUG) debug" 22 echo " -6 : (\$IP6) IPv6" 23 echo " -w : (\$DELAY) Tx Delay value (ns)" 24 echo " -a : (\$APPEND) Script will not reset generator's state, but will append its config" 25 echo "" 26} 27 28## --- Parse command line arguments / parameters --- 29## echo "Commandline options:" 30while getopts "s:i:d:m:p:f:t:c:n:b:w:vxh6ak" option; do 31 case $option in 32 i) # interface 33 export DEV=$OPTARG 34 info "Output device set to: DEV=$DEV" 35 ;; 36 s) 37 export PKT_SIZE=$OPTARG 38 info "Packet size set to: PKT_SIZE=$PKT_SIZE bytes" 39 ;; 40 d) # destination IP 41 export DEST_IP=$OPTARG 42 info "Destination IP set to: DEST_IP=$DEST_IP" 43 ;; 44 m) # MAC 45 export DST_MAC=$OPTARG 46 info "Destination MAC set to: DST_MAC=$DST_MAC" 47 ;; 48 p) # PORT 49 export DST_PORT=$OPTARG 50 info "Destination PORT set to: DST_PORT=$DST_PORT" 51 ;; 52 f) 53 export F_THREAD=$OPTARG 54 info "Index of first thread (zero indexed CPU number): $F_THREAD" 55 ;; 56 t) 57 export THREADS=$OPTARG 58 info "Number of threads to start: $THREADS" 59 ;; 60 c) 61 export CLONE_SKB=$OPTARG 62 info "CLONE_SKB=$CLONE_SKB" 63 ;; 64 n) 65 export COUNT=$OPTARG 66 info "COUNT=$COUNT" 67 ;; 68 b) 69 export BURST=$OPTARG 70 info "SKB bursting: BURST=$BURST" 71 ;; 72 w) 73 export DELAY=$OPTARG 74 info "DELAY=$DELAY" 75 ;; 76 v) 77 export VERBOSE=yes 78 info "Verbose mode: VERBOSE=$VERBOSE" 79 ;; 80 x) 81 export DEBUG=yes 82 info "Debug mode: DEBUG=$DEBUG" 83 ;; 84 6) 85 export IP6=6 86 info "IP6: IP6=$IP6" 87 ;; 88 a) 89 export APPEND=yes 90 info "Append mode: APPEND=$APPEND" 91 ;; 92 k) 93 export UDP_CSUM=yes 94 info "UDP tx checksum: UDP_CSUM=$UDP_CSUM" 95 ;; 96 h|?|*) 97 usage; 98 err 2 "[ERROR] Unknown parameters!!!" 99 esac 100done 101shift $(( $OPTIND - 1 )) 102 103if [ -z "$PKT_SIZE" ]; then 104 # NIC adds 4 bytes CRC 105 export PKT_SIZE=60 106 info "Default packet size set to: set to: $PKT_SIZE bytes" 107fi 108 109if [ -z "$F_THREAD" ]; then 110 # First thread (F_THREAD) reference the zero indexed CPU number 111 export F_THREAD=0 112fi 113 114if [ -z "$THREADS" ]; then 115 export THREADS=1 116fi 117 118# default DELAY 119[ -z "$DELAY" ] && export DELAY=0 # Zero means max speed 120 121export L_THREAD=$(( THREADS + F_THREAD - 1 )) 122 123if [ -z "$DEV" ]; then 124 usage 125 err 2 "Please specify output device" 126fi 127 128if [ -z "$DST_MAC" ]; then 129 warn "Missing destination MAC address" 130fi 131 132if [ -z "$DEST_IP" ]; then 133 warn "Missing destination IP address" 134fi 135 136if [ ! -d /proc/net/pktgen ]; then 137 info "Loading kernel module: pktgen" 138 modprobe pktgen 139fi 140