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#
# 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
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