1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# Kselftest framework requirement - SKIP code is 4.
5ksft_skip=4
6
7##############################################################################
8# Defines
9
10if [[ ! -v DEVLINK_DEV ]]; then
11	DEVLINK_DEV=$(devlink port show "${NETIFS[p1]:-$NETIF_NO_CABLE}" -j \
12			     | jq -r '.port | keys[]' | cut -d/ -f-2)
13	if [ -z "$DEVLINK_DEV" ]; then
14		echo "SKIP: ${NETIFS[p1]} has no devlink device registered for it"
15		exit $ksft_skip
16	fi
17	if [[ "$(echo $DEVLINK_DEV | grep -c pci)" -eq 0 ]]; then
18		echo "SKIP: devlink device's bus is not PCI"
19		exit $ksft_skip
20	fi
21
22	DEVLINK_VIDDID=$(lspci -s $(echo $DEVLINK_DEV | cut -d"/" -f2) \
23			 -n | cut -d" " -f3)
24elif [[ ! -z "$DEVLINK_DEV" ]]; then
25	devlink dev show $DEVLINK_DEV &> /dev/null
26	if [ $? -ne 0 ]; then
27		echo "SKIP: devlink device \"$DEVLINK_DEV\" not found"
28		exit $ksft_skip
29	fi
30fi
31
32##############################################################################
33# Sanity checks
34
35devlink help 2>&1 | grep resource &> /dev/null
36if [ $? -ne 0 ]; then
37	echo "SKIP: iproute2 too old, missing devlink resource support"
38	exit $ksft_skip
39fi
40
41devlink help 2>&1 | grep trap &> /dev/null
42if [ $? -ne 0 ]; then
43	echo "SKIP: iproute2 too old, missing devlink trap support"
44	exit $ksft_skip
45fi
46
47devlink dev help 2>&1 | grep info &> /dev/null
48if [ $? -ne 0 ]; then
49	echo "SKIP: iproute2 too old, missing devlink dev info support"
50	exit $ksft_skip
51fi
52
53##############################################################################
54# Devlink helpers
55
56devlink_resource_names_to_path()
57{
58	local resource
59	local path=""
60
61	for resource in "${@}"; do
62		if [ "$path" == "" ]; then
63			path="$resource"
64		else
65			path="${path}/$resource"
66		fi
67	done
68
69	echo "$path"
70}
71
72devlink_resource_get()
73{
74	local name=$1
75	local resource_name=.[][\"$DEVLINK_DEV\"]
76
77	resource_name="$resource_name | .[] | select (.name == \"$name\")"
78
79	shift
80	for resource in "${@}"; do
81		resource_name="${resource_name} | .[\"resources\"][] | \
82			       select (.name == \"$resource\")"
83	done
84
85	devlink -j resource show "$DEVLINK_DEV" | jq "$resource_name"
86}
87
88devlink_resource_size_get()
89{
90	local size=$(devlink_resource_get "$@" | jq '.["size_new"]')
91
92	if [ "$size" == "null" ]; then
93		devlink_resource_get "$@" | jq '.["size"]'
94	else
95		echo "$size"
96	fi
97}
98
99devlink_resource_size_set()
100{
101	local new_size=$1
102	local path
103
104	shift
105	path=$(devlink_resource_names_to_path "$@")
106	devlink resource set "$DEVLINK_DEV" path "$path" size "$new_size"
107	check_err $? "Failed setting path $path to size $size"
108}
109
110devlink_resource_occ_get()
111{
112	devlink_resource_get "$@" | jq '.["occ"]'
113}
114
115devlink_reload()
116{
117	local still_pending
118
119	devlink dev reload "$DEVLINK_DEV" &> /dev/null
120	check_err $? "Failed reload"
121
122	still_pending=$(devlink resource show "$DEVLINK_DEV" | \
123			grep -c "size_new")
124	check_err $still_pending "Failed reload - There are still unset sizes"
125}
126
127declare -A DEVLINK_ORIG
128
129# Changing pool type from static to dynamic causes reinterpretation of threshold
130# values. They therefore need to be saved before pool type is changed, then the
131# pool type can be changed, and then the new values need to be set up. Therefore
132# instead of saving the current state implicitly in the _set call, provide
133# functions for all three primitives: save, set, and restore.
134
135devlink_port_pool_threshold()
136{
137	local port=$1; shift
138	local pool=$1; shift
139
140	devlink sb port pool show $port pool $pool -j \
141		| jq '.port_pool."'"$port"'"[].threshold'
142}
143
144devlink_port_pool_th_save()
145{
146	local port=$1; shift
147	local pool=$1; shift
148	local key="port_pool($port,$pool).threshold"
149
150	DEVLINK_ORIG[$key]=$(devlink_port_pool_threshold $port $pool)
151}
152
153devlink_port_pool_th_set()
154{
155	local port=$1; shift
156	local pool=$1; shift
157	local th=$1; shift
158
159	devlink sb port pool set $port pool $pool th $th
160}
161
162devlink_port_pool_th_restore()
163{
164	local port=$1; shift
165	local pool=$1; shift
166	local key="port_pool($port,$pool).threshold"
167	local -a orig=(${DEVLINK_ORIG[$key]})
168
169	if [[ -z $orig ]]; then
170		echo "WARNING: Mismatched devlink_port_pool_th_restore"
171	else
172		devlink sb port pool set $port pool $pool th $orig
173	fi
174}
175
176devlink_pool_size_thtype()
177{
178	local pool=$1; shift
179
180	devlink sb pool show "$DEVLINK_DEV" pool $pool -j \
181	    | jq -r '.pool[][] | (.size, .thtype)'
182}
183
184devlink_pool_size_thtype_save()
185{
186	local pool=$1; shift
187	local key="pool($pool).size_thtype"
188
189	DEVLINK_ORIG[$key]=$(devlink_pool_size_thtype $pool)
190}
191
192devlink_pool_size_thtype_set()
193{
194	local pool=$1; shift
195	local thtype=$1; shift
196	local size=$1; shift
197
198	devlink sb pool set "$DEVLINK_DEV" pool $pool size $size thtype $thtype
199}
200
201devlink_pool_size_thtype_restore()
202{
203	local pool=$1; shift
204	local key="pool($pool).size_thtype"
205	local -a orig=(${DEVLINK_ORIG[$key]})
206
207	if [[ -z ${orig[0]} ]]; then
208		echo "WARNING: Mismatched devlink_pool_size_thtype_restore"
209	else
210		devlink sb pool set "$DEVLINK_DEV" pool $pool \
211			size ${orig[0]} thtype ${orig[1]}
212	fi
213}
214
215devlink_tc_bind_pool_th()
216{
217	local port=$1; shift
218	local tc=$1; shift
219	local dir=$1; shift
220
221	devlink sb tc bind show $port tc $tc type $dir -j \
222	    | jq -r '.tc_bind[][] | (.pool, .threshold)'
223}
224
225devlink_tc_bind_pool_th_save()
226{
227	local port=$1; shift
228	local tc=$1; shift
229	local dir=$1; shift
230	local key="tc_bind($port,$dir,$tc).pool_th"
231
232	DEVLINK_ORIG[$key]=$(devlink_tc_bind_pool_th $port $tc $dir)
233}
234
235devlink_tc_bind_pool_th_set()
236{
237	local port=$1; shift
238	local tc=$1; shift
239	local dir=$1; shift
240	local pool=$1; shift
241	local th=$1; shift
242
243	devlink sb tc bind set $port tc $tc type $dir pool $pool th $th
244}
245
246devlink_tc_bind_pool_th_restore()
247{
248	local port=$1; shift
249	local tc=$1; shift
250	local dir=$1; shift
251	local key="tc_bind($port,$dir,$tc).pool_th"
252	local -a orig=(${DEVLINK_ORIG[$key]})
253
254	if [[ -z ${orig[0]} ]]; then
255		echo "WARNING: Mismatched devlink_tc_bind_pool_th_restore"
256	else
257		devlink sb tc bind set $port tc $tc type $dir \
258			pool ${orig[0]} th ${orig[1]}
259	fi
260}
261
262devlink_traps_num_get()
263{
264	devlink -j trap | jq '.[]["'$DEVLINK_DEV'"] | length'
265}
266
267devlink_traps_get()
268{
269	devlink -j trap | jq -r '.[]["'$DEVLINK_DEV'"][].name'
270}
271
272devlink_trap_type_get()
273{
274	local trap_name=$1; shift
275
276	devlink -j trap show $DEVLINK_DEV trap $trap_name \
277		| jq -r '.[][][].type'
278}
279
280devlink_trap_action_set()
281{
282	local trap_name=$1; shift
283	local action=$1; shift
284
285	# Pipe output to /dev/null to avoid expected warnings.
286	devlink trap set $DEVLINK_DEV trap $trap_name \
287		action $action &> /dev/null
288}
289
290devlink_trap_action_get()
291{
292	local trap_name=$1; shift
293
294	devlink -j trap show $DEVLINK_DEV trap $trap_name \
295		| jq -r '.[][][].action'
296}
297
298devlink_trap_group_get()
299{
300	devlink -j trap show $DEVLINK_DEV trap $trap_name \
301		| jq -r '.[][][].group'
302}
303
304devlink_trap_metadata_test()
305{
306	local trap_name=$1; shift
307	local metadata=$1; shift
308
309	devlink -jv trap show $DEVLINK_DEV trap $trap_name \
310		| jq -e '.[][][].metadata | contains(["'$metadata'"])' \
311		&> /dev/null
312}
313
314devlink_trap_rx_packets_get()
315{
316	local trap_name=$1; shift
317
318	devlink -js trap show $DEVLINK_DEV trap $trap_name \
319		| jq '.[][][]["stats"]["rx"]["packets"]'
320}
321
322devlink_trap_rx_bytes_get()
323{
324	local trap_name=$1; shift
325
326	devlink -js trap show $DEVLINK_DEV trap $trap_name \
327		| jq '.[][][]["stats"]["rx"]["bytes"]'
328}
329
330devlink_trap_drop_packets_get()
331{
332	local trap_name=$1; shift
333
334	devlink -js trap show $DEVLINK_DEV trap $trap_name \
335		| jq '.[][][]["stats"]["rx"]["dropped"]'
336}
337
338devlink_trap_stats_idle_test()
339{
340	local trap_name=$1; shift
341	local t0_packets t0_bytes
342	local t1_packets t1_bytes
343
344	t0_packets=$(devlink_trap_rx_packets_get $trap_name)
345	t0_bytes=$(devlink_trap_rx_bytes_get $trap_name)
346
347	sleep 1
348
349	t1_packets=$(devlink_trap_rx_packets_get $trap_name)
350	t1_bytes=$(devlink_trap_rx_bytes_get $trap_name)
351
352	if [[ $t0_packets -eq $t1_packets && $t0_bytes -eq $t1_bytes ]]; then
353		return 0
354	else
355		return 1
356	fi
357}
358
359devlink_trap_drop_stats_idle_test()
360{
361	local trap_name=$1; shift
362	local t0_packets t0_bytes
363
364	t0_packets=$(devlink_trap_drop_packets_get $trap_name)
365
366	sleep 1
367
368	t1_packets=$(devlink_trap_drop_packets_get $trap_name)
369
370	if [[ $t0_packets -eq $t1_packets ]]; then
371		return 0
372	else
373		return 1
374	fi
375}
376
377devlink_traps_enable_all()
378{
379	local trap_name
380
381	for trap_name in $(devlink_traps_get); do
382		devlink_trap_action_set $trap_name "trap"
383	done
384}
385
386devlink_traps_disable_all()
387{
388	for trap_name in $(devlink_traps_get); do
389		devlink_trap_action_set $trap_name "drop"
390	done
391}
392
393devlink_trap_groups_get()
394{
395	devlink -j trap group | jq -r '.[]["'$DEVLINK_DEV'"][].name'
396}
397
398devlink_trap_group_action_set()
399{
400	local group_name=$1; shift
401	local action=$1; shift
402
403	# Pipe output to /dev/null to avoid expected warnings.
404	devlink trap group set $DEVLINK_DEV group $group_name action $action \
405		&> /dev/null
406}
407
408devlink_trap_group_rx_packets_get()
409{
410	local group_name=$1; shift
411
412	devlink -js trap group show $DEVLINK_DEV group $group_name \
413		| jq '.[][][]["stats"]["rx"]["packets"]'
414}
415
416devlink_trap_group_rx_bytes_get()
417{
418	local group_name=$1; shift
419
420	devlink -js trap group show $DEVLINK_DEV group $group_name \
421		| jq '.[][][]["stats"]["rx"]["bytes"]'
422}
423
424devlink_trap_group_stats_idle_test()
425{
426	local group_name=$1; shift
427	local t0_packets t0_bytes
428	local t1_packets t1_bytes
429
430	t0_packets=$(devlink_trap_group_rx_packets_get $group_name)
431	t0_bytes=$(devlink_trap_group_rx_bytes_get $group_name)
432
433	sleep 1
434
435	t1_packets=$(devlink_trap_group_rx_packets_get $group_name)
436	t1_bytes=$(devlink_trap_group_rx_bytes_get $group_name)
437
438	if [[ $t0_packets -eq $t1_packets && $t0_bytes -eq $t1_bytes ]]; then
439		return 0
440	else
441		return 1
442	fi
443}
444
445devlink_trap_exception_test()
446{
447	local trap_name=$1; shift
448	local group_name
449
450	group_name=$(devlink_trap_group_get $trap_name)
451
452	devlink_trap_stats_idle_test $trap_name
453	check_fail $? "Trap stats idle when packets should have been trapped"
454
455	devlink_trap_group_stats_idle_test $group_name
456	check_fail $? "Trap group idle when packets should have been trapped"
457}
458
459devlink_trap_drop_test()
460{
461	local trap_name=$1; shift
462	local dev=$1; shift
463	local handle=$1; shift
464	local group_name
465
466	group_name=$(devlink_trap_group_get $trap_name)
467
468	# This is the common part of all the tests. It checks that stats are
469	# initially idle, then non-idle after changing the trap action and
470	# finally idle again. It also makes sure the packets are dropped and
471	# never forwarded.
472	devlink_trap_stats_idle_test $trap_name
473	check_err $? "Trap stats not idle with initial drop action"
474	devlink_trap_group_stats_idle_test $group_name
475	check_err $? "Trap group stats not idle with initial drop action"
476
477	devlink_trap_action_set $trap_name "trap"
478	devlink_trap_stats_idle_test $trap_name
479	check_fail $? "Trap stats idle after setting action to trap"
480	devlink_trap_group_stats_idle_test $group_name
481	check_fail $? "Trap group stats idle after setting action to trap"
482
483	devlink_trap_action_set $trap_name "drop"
484
485	devlink_trap_stats_idle_test $trap_name
486	check_err $? "Trap stats not idle after setting action to drop"
487	devlink_trap_group_stats_idle_test $group_name
488	check_err $? "Trap group stats not idle after setting action to drop"
489
490	tc_check_packets "dev $dev egress" $handle 0
491	check_err $? "Packets were not dropped"
492}
493
494devlink_trap_drop_cleanup()
495{
496	local mz_pid=$1; shift
497	local dev=$1; shift
498	local proto=$1; shift
499	local pref=$1; shift
500	local handle=$1; shift
501
502	kill $mz_pid && wait $mz_pid &> /dev/null
503	tc filter del dev $dev egress protocol $proto pref $pref handle $handle flower
504}
505
506devlink_trap_stats_test()
507{
508	local test_name=$1; shift
509	local trap_name=$1; shift
510	local send_one="$@"
511	local t0_packets
512	local t1_packets
513
514	RET=0
515
516	t0_packets=$(devlink_trap_rx_packets_get $trap_name)
517
518	$send_one && sleep 1
519
520	t1_packets=$(devlink_trap_rx_packets_get $trap_name)
521
522	if [[ $t1_packets -eq $t0_packets ]]; then
523		check_err 1 "Trap stats did not increase"
524	fi
525
526	log_test "$test_name"
527}
528
529devlink_trap_policers_num_get()
530{
531	devlink -j -p trap policer show | jq '.[]["'$DEVLINK_DEV'"] | length'
532}
533
534devlink_trap_policer_rate_get()
535{
536	local policer_id=$1; shift
537
538	devlink -j -p trap policer show $DEVLINK_DEV policer $policer_id \
539		| jq '.[][][]["rate"]'
540}
541
542devlink_trap_policer_burst_get()
543{
544	local policer_id=$1; shift
545
546	devlink -j -p trap policer show $DEVLINK_DEV policer $policer_id \
547		| jq '.[][][]["burst"]'
548}
549
550devlink_trap_policer_rx_dropped_get()
551{
552	local policer_id=$1; shift
553
554	devlink -j -p -s trap policer show $DEVLINK_DEV policer $policer_id \
555		| jq '.[][][]["stats"]["rx"]["dropped"]'
556}
557
558devlink_trap_group_policer_get()
559{
560	local group_name=$1; shift
561
562	devlink -j -p trap group show $DEVLINK_DEV group $group_name \
563		| jq '.[][][]["policer"]'
564}
565
566devlink_port_by_netdev()
567{
568	local if_name=$1
569
570	devlink -j port show $if_name | jq -e '.[] | keys' | jq -r '.[]'
571}
572
573devlink_cpu_port_get()
574{
575	local cpu_dl_port_num=$(devlink port list | grep "$DEVLINK_DEV" |
576				grep cpu | cut -d/ -f3 | cut -d: -f1 |
577				sed -n '1p')
578
579	echo "$DEVLINK_DEV/$cpu_dl_port_num"
580}
581
582devlink_cell_size_get()
583{
584	devlink sb pool show "$DEVLINK_DEV" pool 0 -j \
585	    | jq '.pool[][].cell_size'
586}
587