#
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# SPDX-License-Identifier: GPL-2.0
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# Common parameter parsing for pktgen scripts
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#
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function usage() {
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echo ""
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echo "Usage: $0 [-vx] -i ethX"
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echo " -i : (\$DEV) output interface/device (required)"
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echo " -s : (\$PKT_SIZE) packet size"
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echo " -d : (\$DEST_IP) destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed"
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echo " -m : (\$DST_MAC) destination MAC-addr"
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echo " -p : (\$DST_PORT) destination PORT range (e.g. 433-444) is also allowed"
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echo " -t : (\$THREADS) threads to start"
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echo " -f : (\$F_THREAD) index of first thread (zero indexed CPU number)"
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echo " -c : (\$SKB_CLONE) SKB clones send before alloc new SKB"
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echo " -n : (\$COUNT) num messages to send per thread, 0 means indefinitely"
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echo " -b : (\$BURST) HW level bursting of SKBs"
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echo " -v : (\$VERBOSE) verbose"
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echo " -x : (\$DEBUG) debug"
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echo " -6 : (\$IP6) IPv6"
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echo ""
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}
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## --- Parse command line arguments / parameters ---
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## echo "Commandline options:"
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while getopts "s:i:d:m:p:f:t:c:n:b:vxh6" option; do
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case $option in
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i) # interface
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export DEV=$OPTARG
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info "Output device set to: DEV=$DEV"
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;;
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s)
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export PKT_SIZE=$OPTARG
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info "Packet size set to: PKT_SIZE=$PKT_SIZE bytes"
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;;
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d) # destination IP
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export DEST_IP=$OPTARG
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info "Destination IP set to: DEST_IP=$DEST_IP"
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;;
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m) # MAC
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export DST_MAC=$OPTARG
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info "Destination MAC set to: DST_MAC=$DST_MAC"
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;;
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p) # PORT
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export DST_PORT=$OPTARG
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info "Destination PORT set to: DST_PORT=$DST_PORT"
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;;
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f)
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export F_THREAD=$OPTARG
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info "Index of first thread (zero indexed CPU number): $F_THREAD"
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;;
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t)
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export THREADS=$OPTARG
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info "Number of threads to start: $THREADS"
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;;
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c)
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export CLONE_SKB=$OPTARG
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info "CLONE_SKB=$CLONE_SKB"
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;;
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n)
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export COUNT=$OPTARG
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info "COUNT=$COUNT"
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;;
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b)
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export BURST=$OPTARG
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info "SKB bursting: BURST=$BURST"
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;;
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v)
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export VERBOSE=yes
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info "Verbose mode: VERBOSE=$VERBOSE"
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;;
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x)
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export DEBUG=yes
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info "Debug mode: DEBUG=$DEBUG"
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;;
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6)
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export IP6=6
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info "IP6: IP6=$IP6"
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;;
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h|?|*)
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usage;
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err 2 "[ERROR] Unknown parameters!!!"
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esac
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done
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shift $(( $OPTIND - 1 ))
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if [ -z "$PKT_SIZE" ]; then
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# NIC adds 4 bytes CRC
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export PKT_SIZE=60
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info "Default packet size set to: set to: $PKT_SIZE bytes"
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fi
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if [ -z "$F_THREAD" ]; then
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# First thread (F_THREAD) reference the zero indexed CPU number
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export F_THREAD=0
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fi
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if [ -z "$THREADS" ]; then
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export THREADS=1
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fi
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export L_THREAD=$(( THREADS + F_THREAD - 1 ))
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if [ -z "$DEV" ]; then
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usage
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err 2 "Please specify output device"
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fi
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if [ -z "$DST_MAC" ]; then
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warn "Missing destination MAC address"
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fi
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if [ -z "$DEST_IP" ]; then
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warn "Missing destination IP address"
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fi
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if [ ! -d /proc/net/pktgen ]; then
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info "Loading kernel module: pktgen"
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modprobe pktgen
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fi
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