net/forwarding/tsn_lib.sh

2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright 2021-2022 NXP
5 tc_testing_scripts_dir=$(dirname $0)/../../tc-testing/scripts
15 	# https://github.com/vladimiroltean/tsn-scripts
16 	# WARNING: isochron versions pre-1.0 are unstable,
31 	if ! [ -z "${uds_address}" ]; then
32 		extra_args="${extra_args} -z ${uds_address}"
37 	chrt -f 10 phc2sys -m \
38 		-a -rr \
39 		--step_threshold 0.00002 \
40 		--first_step_threshold 0.00002 \
42 		> "${phc2sys_log}" 2>&1 &
52 	{ kill ${phc2sys_pid} && wait ${phc2sys_pid}; } 2> /dev/null
53 	rm "${phc2sys_log}" 2> /dev/null
67 	local slave_only=$2
74 		extra_args="${extra_args} -i ${if_name}"
78 		extra_args="${extra_args} -s"
83 	declare -g "${log}=$(mktemp)"
85 	chrt -f 10 ptp4l -m -2 -P \
86 		--step_threshold 0.00002 \
87 		--first_step_threshold 0.00002 \
88 		--tx_timestamp_timeout 100 \
89 		--uds_address="${uds_address}" \
91 		> "${!log}" 2>&1 &
92 	declare -g "${pid}=$!"
105 	{ kill ${!pid} && wait ${!pid}; } 2> /dev/null
106 	rm "${!log}" 2> /dev/null
111 	local cpu=$1
112 	local freq="cpu${cpu}_freq"
113 	local governor="cpu${cpu}_governor"
116 	if ! [ -d /sys/bus/cpu/devices/cpu${cpu}/cpufreq ]; then
120 	# declare dynamic variables cpu${cpu}_freq and cpu${cpu}_governor as
122 	declare -g "${freq}=$(cat /sys/bus/cpu/devices/cpu${cpu}/cpufreq/scaling_min_freq)"
123 	declare -g "${governor}=$(cat /sys/bus/cpu/devices/cpu${cpu}/cpufreq/scaling_governor)"
125 	cat /sys/bus/cpu/devices/cpu${cpu}/cpufreq/scaling_max_freq > \
126 		/sys/bus/cpu/devices/cpu${cpu}/cpufreq/scaling_min_freq
127 	echo -n "performance" > \
128 		/sys/bus/cpu/devices/cpu${cpu}/cpufreq/scaling_governor
133 	local cpu=$1
134 	local freq="cpu${cpu}_freq"
135 	local governor="cpu${cpu}_governor"
137 	if ! [ -d /sys/bus/cpu/devices/cpu${cpu}/cpufreq ]; then
141 	echo "${!freq}" > /sys/bus/cpu/devices/cpu${cpu}/cpufreq/scaling_min_freq
142 	echo -n "${!governor}" > \
143 		/sys/bus/cpu/devices/cpu${cpu}/cpufreq/scaling_governor
149 	local uds=$2
154 	if ! [ -z "${uds}" ]; then
155 		extra_args="${extra_args} --unix-domain-socket ${uds}"
159 		--interface ${if_name} \
160 		--sched-priority 98 \
161 		--sched-fifo \
162 		--utc-tai-offset ${UTC_TAI_OFFSET} \
163 		--stats-port ${stats_port} \
164 		--quiet \
166 	declare -g "${pid}=$!"
176 	{ kill ${!pid} && wait ${!pid}; } 2> /dev/null
199 	if ! [ -z "${dst_ip}" ]; then
203 	if ! [ -z "${vrf}" ]; then
207 	if ! [ -z "${vid}" ]; then
208 		vid="--vid=${vid}"
211 	if [ -z "${receiver_uds}" ]; then
212 		extra_args="${extra_args} --omit-remote-sync"
215 	if ! [ -z "${shift_time}" ]; then
216 		extra_args="${extra_args} --shift-time=${shift_time}"
219 	if ! [ -z "${window_size}" ]; then
220 		extra_args="${extra_args} --window-size=${window_size}"
224 		extra_args="${extra_args} --l2 --etype=0xdead ${vid}"
225 		receiver_extra_args="--l2 --etype=0xdead"
227 		extra_args="${extra_args} --l4 --ip-destination=${dst_ip}"
228 		receiver_extra_args="--l4"
236 		--interface ${sender_if_name} \
237 		--unix-domain-socket ${sender_uds} \
238 		--priority ${priority} \
239 		--base-time ${base_time} \
240 		--cycle-time ${cycle_time} \
241 		--num-frames ${num_pkts} \
242 		--frame-size 64 \
243 		--txtime \
244 		--utc-tai-offset ${UTC_TAI_OFFSET} \
245 		--cpu-mask $((1 << ${ISOCHRON_CPU})) \
246 		--sched-fifo \
247 		--sched-priority 98 \
248 		--client 127.0.0.1 \
249 		--sync-threshold 5000 \
250 		--output-file ${isochron_dat} \
252 		--quiet
263 	# Count all received packets by looking at the non-zero RX timestamps
265 		--input-file "${isochron_dat}" \
266 		--printf-format "%u\n" --printf-args "R" | \
267 		grep -w -v '0' | wc -l