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 "" 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