net/forwarding/tsn_lib.sh

2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright 2021-2022 NXP
13 	# https://github.com/vladimiroltean/tsn-scripts
14 	# WARNING: isochron versions pre-1.0 are unstable,
28 	if ! [ -z "${uds_address}" ]; then
29 		extra_args="${extra_args} -z ${uds_address}"
34 	chrt -f 10 phc2sys -m \
35 		-a -rr \
36 		--step_threshold 0.00002 \
37 		--first_step_threshold 0.00002 \
42 	echo "phc2sys logs to ${phc2sys_log} and has pid ${phc2sys_pid}"
67 	local pid="ptp4l_pid_$(if_names_to_label ${if_names})"
71 		extra_args="${extra_args} -i ${if_name}"
75 		extra_args="${extra_args} -s"
80 	declare -g "${log}=$(mktemp)"
82 	chrt -f 10 ptp4l -m -2 -P \
83 		--step_threshold 0.00002 \
84 		--first_step_threshold 0.00002 \
85 		--tx_timestamp_timeout 100 \
86 		--uds_address="${uds_address}" \
89 	declare -g "${pid}=$!"
91 	echo "ptp4l for interfaces ${if_names} logs to ${!log} and has pid ${!pid}"
100 	local pid="ptp4l_pid_$(if_names_to_label ${if_names})"
102 	{ kill ${!pid} && wait ${!pid}; } 2> /dev/null
113 	if ! [ -d /sys/bus/cpu/devices/cpu${cpu}/cpufreq ]; then
119 	declare -g "${freq}=$(cat /sys/bus/cpu/devices/cpu${cpu}/cpufreq/scaling_min_freq)"
120 	declare -g "${governor}=$(cat /sys/bus/cpu/devices/cpu${cpu}/cpufreq/scaling_governor)"
124 	echo -n "performance" > \
134 	if ! [ -d /sys/bus/cpu/devices/cpu${cpu}/cpufreq ]; then
139 	echo -n "${!governor}" > \
149 	local pid="isochron_pid_${stats_port}"
151 	if ! [ -z "${uds}" ]; then
152 		extra_args="${extra_args} --unix-domain-socket ${uds}"
156 		--interface ${if_name} \
157 		--sched-priority 98 \
158 		--sched-fifo \
159 		--utc-tai-offset ${UTC_TAI_OFFSET} \
160 		--stats-port ${stats_port} \
161 		--quiet \
163 	declare -g "${pid}=$!"
171 	local pid="isochron_pid_${stats_port}"
173 	{ kill ${!pid} && wait ${!pid}; } 2> /dev/null
195 	if ! [ -z "${dst_ip}" ]; then
199 	if ! [ -z "${vrf}" ]; then
203 	if ! [ -z "${vid}" ]; then
204 		vid="--vid=${vid}"
207 	if [ -z "${receiver_uds}" ]; then
208 		extra_args="${extra_args} --omit-remote-sync"
211 	if ! [ -z "${shift_time}" ]; then
212 		extra_args="${extra_args} --shift-time=${shift_time}"
216 		extra_args="${extra_args} --l2 --etype=0xdead ${vid}"
217 		receiver_extra_args="--l2 --etype=0xdead"
219 		extra_args="${extra_args} --l4 --ip-destination=${dst_ip}"
220 		receiver_extra_args="--l4"
228 		--interface ${sender_if_name} \
229 		--unix-domain-socket ${sender_uds} \
230 		--priority ${priority} \
231 		--base-time ${base_time} \
232 		--cycle-time ${cycle_time} \
233 		--num-frames ${num_pkts} \
234 		--frame-size 64 \
235 		--txtime \
236 		--utc-tai-offset ${UTC_TAI_OFFSET} \
237 		--cpu-mask $((1 << ${ISOCHRON_CPU})) \
238 		--sched-fifo \
239 		--sched-priority 98 \
240 		--client 127.0.0.1 \
241 		--sync-threshold 5000 \
242 		--output-file ${isochron_dat} \
244 		--quiet