# # SPDX-License-Identifier: GPL-2.0 # Common parameter parsing for pktgen scripts # function usage() { echo "" echo "Usage: $0 [-vx] -i ethX" echo " -i : (\$DEV) output interface/device (required)" echo " -s : (\$PKT_SIZE) packet size" echo " -d : (\$DEST_IP) destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed" echo " -m : (\$DST_MAC) destination MAC-addr" echo " -p : (\$DST_PORT) destination PORT range (e.g. 433-444) is also allowed" echo " -k : (\$UDP_CSUM) enable UDP tx checksum" echo " -t : (\$THREADS) threads to start" echo " -f : (\$F_THREAD) index of first thread (zero indexed CPU number)" echo " -c : (\$SKB_CLONE) SKB clones send before alloc new SKB" echo " -n : (\$COUNT) num messages to send per thread, 0 means indefinitely" echo " -b : (\$BURST) HW level bursting of SKBs" echo " -v : (\$VERBOSE) verbose" echo " -x : (\$DEBUG) debug" echo " -6 : (\$IP6) IPv6" echo " -w : (\$DELAY) Tx Delay value (ns)" echo " -a : (\$APPEND) Script will not reset generator's state, but will append its config" echo "" } ## --- Parse command line arguments / parameters --- ## echo "Commandline options:" while getopts "s:i:d:m:p:f:t:c:n:b:w:vxh6ak" option; do case $option in i) # interface export DEV=$OPTARG info "Output device set to: DEV=$DEV" ;; s) export PKT_SIZE=$OPTARG info "Packet size set to: PKT_SIZE=$PKT_SIZE bytes" ;; d) # destination IP export DEST_IP=$OPTARG info "Destination IP set to: DEST_IP=$DEST_IP" ;; m) # MAC export DST_MAC=$OPTARG info "Destination MAC set to: DST_MAC=$DST_MAC" ;; p) # PORT export DST_PORT=$OPTARG info "Destination PORT set to: DST_PORT=$DST_PORT" ;; f) export F_THREAD=$OPTARG info "Index of first thread (zero indexed CPU number): $F_THREAD" ;; t) export THREADS=$OPTARG info "Number of threads to start: $THREADS" ;; c) export CLONE_SKB=$OPTARG info "CLONE_SKB=$CLONE_SKB" ;; n) export COUNT=$OPTARG info "COUNT=$COUNT" ;; b) export BURST=$OPTARG info "SKB bursting: BURST=$BURST" ;; w) export DELAY=$OPTARG info "DELAY=$DELAY" ;; v) export VERBOSE=yes info "Verbose mode: VERBOSE=$VERBOSE" ;; x) export DEBUG=yes info "Debug mode: DEBUG=$DEBUG" ;; 6) export IP6=6 info "IP6: IP6=$IP6" ;; a) export APPEND=yes info "Append mode: APPEND=$APPEND" ;; k) export UDP_CSUM=yes info "UDP tx checksum: UDP_CSUM=$UDP_CSUM" ;; h|?|*) usage; err 2 "[ERROR] Unknown parameters!!!" esac done shift $(( $OPTIND - 1 )) if [ -z "$PKT_SIZE" ]; then # NIC adds 4 bytes CRC export PKT_SIZE=60 info "Default packet size set to: set to: $PKT_SIZE bytes" fi if [ -z "$F_THREAD" ]; then # First thread (F_THREAD) reference the zero indexed CPU number export F_THREAD=0 fi if [ -z "$THREADS" ]; then export THREADS=1 fi # default DELAY [ -z "$DELAY" ] && export DELAY=0 # Zero means max speed export L_THREAD=$(( THREADS + F_THREAD - 1 )) if [ -z "$DEV" ]; then usage err 2 "Please specify output device" fi if [ -z "$DST_MAC" ]; then warn "Missing destination MAC address" fi if [ -z "$DEST_IP" ]; then warn "Missing destination IP address" fi if [ ! -d /proc/net/pktgen ]; then info "Loading kernel module: pktgen" modprobe pktgen fi