xref: /linux/tools/testing/selftests/drivers/net/netdevsim/devlink.sh (revision 59fff63cc2b75dcfe08f9eeb4b2187d73e53843d)
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4lib_dir=$(dirname $0)/../../../net/forwarding
5
6ALL_TESTS="fw_flash_test params_test regions_test reload_test \
7	   netns_reload_test resource_test dev_info_test \
8	   empty_reporter_test dummy_reporter_test rate_test"
9NUM_NETIFS=0
10source $lib_dir/lib.sh
11
12BUS_ADDR=10
13PORT_COUNT=4
14VF_COUNT=4
15DEV_NAME=netdevsim$BUS_ADDR
16SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV_NAME/net/
17DEBUGFS_DIR=/sys/kernel/debug/netdevsim/$DEV_NAME/
18DL_HANDLE=netdevsim/$DEV_NAME
19
20wait_for_devlink()
21{
22	"$@" | grep -q $DL_HANDLE
23}
24
25devlink_wait()
26{
27	local timeout=$1
28
29	busywait "$timeout" wait_for_devlink devlink dev
30}
31
32fw_flash_test()
33{
34	DUMMYFILE=$(find /lib/firmware -maxdepth 1 -type f  -printf '%f\n' |head -1)
35	RET=0
36
37	if [ -z "$DUMMYFILE" ]
38	then
39		echo "SKIP: unable to find suitable dummy firmware file"
40		return
41	fi
42
43	devlink dev flash $DL_HANDLE file $DUMMYFILE
44	check_err $? "Failed to flash with status updates on"
45
46	devlink dev flash $DL_HANDLE file $DUMMYFILE component fw.mgmt
47	check_err $? "Failed to flash with component attribute"
48
49	devlink dev flash $DL_HANDLE file $DUMMYFILE overwrite settings
50	check_fail $? "Flash with overwrite settings should be rejected"
51
52	echo "1"> $DEBUGFS_DIR/fw_update_overwrite_mask
53	check_err $? "Failed to change allowed overwrite mask"
54
55	devlink dev flash $DL_HANDLE file $DUMMYFILE overwrite settings
56	check_err $? "Failed to flash with settings overwrite enabled"
57
58	devlink dev flash $DL_HANDLE file $DUMMYFILE overwrite identifiers
59	check_fail $? "Flash with overwrite settings should be identifiers"
60
61	echo "3"> $DEBUGFS_DIR/fw_update_overwrite_mask
62	check_err $? "Failed to change allowed overwrite mask"
63
64	devlink dev flash $DL_HANDLE file $DUMMYFILE overwrite identifiers overwrite settings
65	check_err $? "Failed to flash with settings and identifiers overwrite enabled"
66
67	echo "n"> $DEBUGFS_DIR/fw_update_status
68	check_err $? "Failed to disable status updates"
69
70	devlink dev flash $DL_HANDLE file $DUMMYFILE
71	check_err $? "Failed to flash with status updates off"
72
73	log_test "fw flash test"
74}
75
76param_get()
77{
78	local name=$1
79
80	cmd_jq "devlink dev param show $DL_HANDLE name $name -j" \
81	       '.[][][].values[] | select(.cmode == "driverinit").value'
82}
83
84param_set()
85{
86	local name=$1
87	local value=$2
88
89	devlink dev param set $DL_HANDLE name $name cmode driverinit value $value
90}
91
92check_value()
93{
94	local name=$1
95	local phase_name=$2
96	local expected_param_value=$3
97	local expected_debugfs_value=$4
98	local value
99
100	value=$(param_get $name)
101	check_err $? "Failed to get $name param value"
102	[ "$value" == "$expected_param_value" ]
103	check_err $? "Unexpected $phase_name $name param value"
104	value=$(<$DEBUGFS_DIR/$name)
105	check_err $? "Failed to get $name debugfs value"
106	[ "$value" == "$expected_debugfs_value" ]
107	check_err $? "Unexpected $phase_name $name debugfs value"
108}
109
110params_test()
111{
112	RET=0
113
114	local max_macs
115	local test1
116
117	check_value max_macs initial 32 32
118	check_value test1 initial true Y
119
120	param_set max_macs 16
121	check_err $? "Failed to set max_macs param value"
122	param_set test1 false
123	check_err $? "Failed to set test1 param value"
124
125	check_value max_macs post-set 16 32
126	check_value test1 post-set false Y
127
128	devlink dev reload $DL_HANDLE
129
130	check_value max_macs post-reload 16 16
131	check_value test1 post-reload false N
132
133	log_test "params test"
134}
135
136check_region_size()
137{
138	local name=$1
139	local size
140
141	size=$(devlink region show $DL_HANDLE/$name -j | jq -e -r '.[][].size')
142	check_err $? "Failed to get $name region size"
143	[ $size -eq 32768 ]
144	check_err $? "Invalid $name region size"
145}
146
147check_region_snapshot_count()
148{
149	local name=$1
150	local phase_name=$2
151	local expected_count=$3
152	local count
153
154	count=$(devlink region show $DL_HANDLE/$name -j | jq -e -r '.[][].snapshot | length')
155	[ $count -eq $expected_count ]
156	check_err $? "Unexpected $phase_name snapshot count"
157}
158
159regions_test()
160{
161	RET=0
162
163	local count
164
165	check_region_size dummy
166	check_region_snapshot_count dummy initial 0
167
168	echo ""> $DEBUGFS_DIR/take_snapshot
169	check_err $? "Failed to take first dummy region snapshot"
170	check_region_snapshot_count dummy post-first-snapshot 1
171
172	echo ""> $DEBUGFS_DIR/take_snapshot
173	check_err $? "Failed to take second dummy region snapshot"
174	check_region_snapshot_count dummy post-second-snapshot 2
175
176	echo ""> $DEBUGFS_DIR/take_snapshot
177	check_err $? "Failed to take third dummy region snapshot"
178	check_region_snapshot_count dummy post-third-snapshot 3
179
180	devlink region del $DL_HANDLE/dummy snapshot 1
181	check_err $? "Failed to delete first dummy region snapshot"
182
183	check_region_snapshot_count dummy post-first-delete 2
184
185	devlink region new $DL_HANDLE/dummy snapshot 25
186	check_err $? "Failed to create a new snapshot with id 25"
187
188	check_region_snapshot_count dummy post-first-request 3
189
190	devlink region dump $DL_HANDLE/dummy snapshot 25 >> /dev/null
191	check_err $? "Failed to dump snapshot with id 25"
192
193	devlink region read $DL_HANDLE/dummy snapshot 25 addr 0 len 1 >> /dev/null
194	check_err $? "Failed to read snapshot with id 25 (1 byte)"
195
196	devlink region read $DL_HANDLE/dummy snapshot 25 addr 128 len 128 >> /dev/null
197	check_err $? "Failed to read snapshot with id 25 (128 bytes)"
198
199	devlink region read $DL_HANDLE/dummy snapshot 25 addr 128 len $((1<<32)) >> /dev/null
200	check_err $? "Failed to read snapshot with id 25 (oversized)"
201
202	devlink region read $DL_HANDLE/dummy snapshot 25 addr $((1<<32)) len 128 >> /dev/null 2>&1
203	check_fail $? "Bad read of snapshot with id 25 did not fail"
204
205	devlink region del $DL_HANDLE/dummy snapshot 25
206	check_err $? "Failed to delete snapshot with id 25"
207
208	check_region_snapshot_count dummy post-second-delete 2
209
210	sid=$(devlink -j region new $DL_HANDLE/dummy | jq '.[][][][]')
211	check_err $? "Failed to create a new snapshot with id allocated by the kernel"
212
213	check_region_snapshot_count dummy post-first-request 3
214
215	devlink region dump $DL_HANDLE/dummy snapshot $sid >> /dev/null
216	check_err $? "Failed to dump a snapshot with id allocated by the kernel"
217
218	devlink region del $DL_HANDLE/dummy snapshot $sid
219	check_err $? "Failed to delete snapshot with id allocated by the kernel"
220
221	check_region_snapshot_count dummy post-first-request 2
222
223	log_test "regions test"
224}
225
226reload_test()
227{
228	RET=0
229
230	devlink dev reload $DL_HANDLE
231	check_err $? "Failed to reload"
232
233	echo "y"> $DEBUGFS_DIR/fail_reload
234	check_err $? "Failed to setup devlink reload to fail"
235
236	devlink dev reload $DL_HANDLE
237	check_fail $? "Unexpected success of devlink reload"
238
239	echo "n"> $DEBUGFS_DIR/fail_reload
240	check_err $? "Failed to setup devlink reload not to fail"
241
242	devlink dev reload $DL_HANDLE
243	check_err $? "Failed to reload after set not to fail"
244
245	echo "y"> $DEBUGFS_DIR/dont_allow_reload
246	check_err $? "Failed to forbid devlink reload"
247
248	devlink dev reload $DL_HANDLE
249	check_fail $? "Unexpected success of devlink reload"
250
251	echo "n"> $DEBUGFS_DIR/dont_allow_reload
252	check_err $? "Failed to re-enable devlink reload"
253
254	devlink dev reload $DL_HANDLE
255	check_err $? "Failed to reload after re-enable"
256
257	log_test "reload test"
258}
259
260netns_reload_test()
261{
262	RET=0
263
264	ip netns add testns1
265	check_err $? "Failed add netns \"testns1\""
266	ip netns add testns2
267	check_err $? "Failed add netns \"testns2\""
268
269	devlink dev reload $DL_HANDLE netns testns1
270	check_err $? "Failed to reload into netns \"testns1\""
271
272	devlink -N testns1 dev reload $DL_HANDLE netns testns2
273	check_err $? "Failed to reload from netns \"testns1\" into netns \"testns2\""
274
275	ip netns del testns2
276	ip netns del testns1
277
278	# Wait until netns async cleanup is done.
279	devlink_wait 2000
280
281	log_test "netns reload test"
282}
283
284DUMMYDEV="dummytest"
285
286res_val_get()
287{
288	local netns=$1
289	local parentname=$2
290	local name=$3
291	local type=$4
292
293	cmd_jq "devlink -N $netns resource show $DL_HANDLE -j" \
294	       ".[][][] | select(.name == \"$parentname\").resources[] \
295	        | select(.name == \"$name\").$type"
296}
297
298resource_test()
299{
300	RET=0
301
302	ip netns add testns1
303	check_err $? "Failed add netns \"testns1\""
304	ip netns add testns2
305	check_err $? "Failed add netns \"testns2\""
306
307	devlink dev reload $DL_HANDLE netns testns1
308	check_err $? "Failed to reload into netns \"testns1\""
309
310	# Create dummy dev to add the address and routes on.
311
312	ip -n testns1 link add name $DUMMYDEV type dummy
313	check_err $? "Failed create dummy device"
314	ip -n testns1 link set $DUMMYDEV up
315	check_err $? "Failed bring up dummy device"
316	ip -n testns1 a a 192.0.1.1/24 dev $DUMMYDEV
317	check_err $? "Failed add an IP address to dummy device"
318
319	local occ=$(res_val_get testns1 IPv4 fib occ)
320	local limit=$((occ+1))
321
322	# Set fib size limit to handle one another route only.
323
324	devlink -N testns1 resource set $DL_HANDLE path IPv4/fib size $limit
325	check_err $? "Failed to set IPv4/fib resource size"
326	local size_new=$(res_val_get testns1 IPv4 fib size_new)
327	[ "$size_new" -eq "$limit" ]
328	check_err $? "Unexpected \"size_new\" value (got $size_new, expected $limit)"
329
330	devlink -N testns1 dev reload $DL_HANDLE
331	check_err $? "Failed to reload"
332	local size=$(res_val_get testns1 IPv4 fib size)
333	[ "$size" -eq "$limit" ]
334	check_err $? "Unexpected \"size\" value (got $size, expected $limit)"
335
336	# Insert 2 routes, the first is going to be inserted,
337	# the second is expected to fail to be inserted.
338
339	ip -n testns1 r a 192.0.2.0/24 via 192.0.1.2
340	check_err $? "Failed to add route"
341
342	ip -n testns1 r a 192.0.3.0/24 via 192.0.1.2
343	check_fail $? "Unexpected successful route add over limit"
344
345	# Now create another dummy in second network namespace and
346	# insert two routes. That is over the limit of the netdevsim
347	# instance in the first namespace. Move the netdevsim instance
348	# into the second namespace and expect it to fail.
349
350	ip -n testns2 link add name $DUMMYDEV type dummy
351	check_err $? "Failed create dummy device"
352	ip -n testns2 link set $DUMMYDEV up
353	check_err $? "Failed bring up dummy device"
354	ip -n testns2 a a 192.0.1.1/24 dev $DUMMYDEV
355	check_err $? "Failed add an IP address to dummy device"
356	ip -n testns2 r a 192.0.2.0/24 via 192.0.1.2
357	check_err $? "Failed to add route"
358	ip -n testns2 r a 192.0.3.0/24 via 192.0.1.2
359	check_err $? "Failed to add route"
360
361	devlink -N testns1 dev reload $DL_HANDLE netns testns2
362	check_fail $? "Unexpected successful reload from netns \"testns1\" into netns \"testns2\""
363
364	devlink -N testns2 resource set $DL_HANDLE path IPv4/fib size ' -1'
365	check_err $? "Failed to reset IPv4/fib resource size"
366
367	devlink -N testns2 dev reload $DL_HANDLE netns 1
368	check_err $? "Failed to reload devlink back"
369
370	ip netns del testns2
371	ip netns del testns1
372
373	# Wait until netns async cleanup is done.
374	devlink_wait 2000
375
376	log_test "resource test"
377}
378
379info_get()
380{
381	local name=$1
382
383	cmd_jq "devlink dev info $DL_HANDLE -j" ".[][][\"$name\"]" "-e"
384}
385
386dev_info_test()
387{
388	RET=0
389
390	driver=$(info_get "driver")
391	check_err $? "Failed to get driver name"
392	[ "$driver" == "netdevsim" ]
393	check_err $? "Unexpected driver name $driver"
394
395	log_test "dev_info test"
396}
397
398empty_reporter_test()
399{
400	RET=0
401
402	devlink health show $DL_HANDLE reporter empty >/dev/null
403	check_err $? "Failed show empty reporter"
404
405	devlink health dump show $DL_HANDLE reporter empty >/dev/null
406	check_err $? "Failed show dump of empty reporter"
407
408	devlink health diagnose $DL_HANDLE reporter empty >/dev/null
409	check_err $? "Failed diagnose empty reporter"
410
411	devlink health recover $DL_HANDLE reporter empty
412	check_err $? "Failed recover empty reporter"
413
414	log_test "empty reporter test"
415}
416
417check_reporter_info()
418{
419	local name=$1
420	local expected_state=$2
421	local expected_error=$3
422	local expected_recover=$4
423	local expected_grace_period=$5
424	local expected_auto_recover=$6
425
426	local show=$(devlink health show $DL_HANDLE reporter $name -j | jq -e -r ".[][][]")
427	check_err $? "Failed show $name reporter"
428
429	local state=$(echo $show | jq -r ".state")
430	[ "$state" == "$expected_state" ]
431	check_err $? "Unexpected \"state\" value (got $state, expected $expected_state)"
432
433	local error=$(echo $show | jq -r ".error")
434	[ "$error" == "$expected_error" ]
435	check_err $? "Unexpected \"error\" value (got $error, expected $expected_error)"
436
437	local recover=`echo $show | jq -r ".recover"`
438	[ "$recover" == "$expected_recover" ]
439	check_err $? "Unexpected \"recover\" value (got $recover, expected $expected_recover)"
440
441	local grace_period=$(echo $show | jq -r ".grace_period")
442	check_err $? "Failed get $name reporter grace_period"
443	[ "$grace_period" == "$expected_grace_period" ]
444	check_err $? "Unexpected \"grace_period\" value (got $grace_period, expected $expected_grace_period)"
445
446	local auto_recover=$(echo $show | jq -r ".auto_recover")
447	[ "$auto_recover" == "$expected_auto_recover" ]
448	check_err $? "Unexpected \"auto_recover\" value (got $auto_recover, expected $expected_auto_recover)"
449}
450
451dummy_reporter_test()
452{
453	RET=0
454
455	check_reporter_info dummy healthy 0 0 0 true
456
457	devlink health set $DL_HANDLE reporter dummy auto_recover false
458	check_err $? "Failed to dummy reporter auto_recover option"
459
460	check_reporter_info dummy healthy 0 0 0 false
461
462	local BREAK_MSG="foo bar"
463	echo "$BREAK_MSG"> $DEBUGFS_DIR/health/break_health
464	check_err $? "Failed to break dummy reporter"
465
466	check_reporter_info dummy error 1 0 0 false
467
468	local dump=$(devlink health dump show $DL_HANDLE reporter dummy -j)
469	check_err $? "Failed show dump of dummy reporter"
470
471	local dump_break_msg=$(echo $dump | jq -r ".break_message")
472	[ "$dump_break_msg" == "$BREAK_MSG" ]
473	check_err $? "Unexpected dump break message value (got $dump_break_msg, expected $BREAK_MSG)"
474
475	devlink health dump clear $DL_HANDLE reporter dummy
476	check_err $? "Failed clear dump of dummy reporter"
477
478	devlink health recover $DL_HANDLE reporter dummy
479	check_err $? "Failed recover dummy reporter"
480
481	check_reporter_info dummy healthy 1 1 0 false
482
483	devlink health set $DL_HANDLE reporter dummy auto_recover true
484	check_err $? "Failed to dummy reporter auto_recover option"
485
486	check_reporter_info dummy healthy 1 1 0 true
487
488	echo "$BREAK_MSG"> $DEBUGFS_DIR/health/break_health
489	check_err $? "Failed to break dummy reporter"
490
491	check_reporter_info dummy healthy 2 2 0 true
492
493	local diagnose=$(devlink health diagnose $DL_HANDLE reporter dummy -j -p)
494	check_err $? "Failed show diagnose of dummy reporter"
495
496	local rcvrd_break_msg=$(echo $diagnose | jq -r ".recovered_break_message")
497	[ "$rcvrd_break_msg" == "$BREAK_MSG" ]
498	check_err $? "Unexpected recovered break message value (got $rcvrd_break_msg, expected $BREAK_MSG)"
499
500	devlink health set $DL_HANDLE reporter dummy grace_period 10
501	check_err $? "Failed to dummy reporter grace_period option"
502
503	check_reporter_info dummy healthy 2 2 10 true
504
505	echo "Y"> $DEBUGFS_DIR/health/fail_recover
506	check_err $? "Failed set dummy reporter recovery to fail"
507
508	echo "$BREAK_MSG"> $DEBUGFS_DIR/health/break_health
509	check_fail $? "Unexpected success of dummy reporter break"
510
511	check_reporter_info dummy error 3 2 10 true
512
513	devlink health recover $DL_HANDLE reporter dummy
514	check_fail $? "Unexpected success of dummy reporter recover"
515
516	echo "N"> $DEBUGFS_DIR/health/fail_recover
517	check_err $? "Failed set dummy reporter recovery to be successful"
518
519	devlink health recover $DL_HANDLE reporter dummy
520	check_err $? "Failed recover dummy reporter"
521
522	check_reporter_info dummy healthy 3 3 10 true
523
524	echo 8192 > $DEBUGFS_DIR/health/binary_len
525	check_err $? "Failed set dummy reporter binary len to 8192"
526
527	local dump=$(devlink health dump show $DL_HANDLE reporter dummy -j)
528	check_err $? "Failed show dump of dummy reporter"
529
530	devlink health dump clear $DL_HANDLE reporter dummy
531	check_err $? "Failed clear dump of dummy reporter"
532
533	log_test "dummy reporter test"
534}
535
536rate_leafs_get()
537{
538	local handle=$1
539
540	cmd_jq "devlink port function rate show -j" \
541	       '.[] | to_entries | .[] | select(.value.type == "leaf") | .key | select(contains("'$handle'"))'
542}
543
544rate_nodes_get()
545{
546	local handle=$1
547
548	cmd_jq "devlink port function rate show -j" \
549		'.[] | to_entries | .[] | select(.value.type == "node") | .key | select(contains("'$handle'"))'
550}
551
552rate_attr_set()
553{
554	local handle=$1
555	local name=$2
556	local value=$3
557	local units=$4
558
559	devlink port function rate set $handle $name $value$units
560}
561
562rate_attr_get()
563{
564	local handle=$1
565	local name=$2
566
567	cmd_jq "devlink port function rate show $handle -j" '.[][].'$name
568}
569
570rate_attr_tx_rate_check()
571{
572	local handle=$1
573	local name=$2
574	local rate=$3
575	local debug_file=$4
576
577	rate_attr_set $handle $name $rate mbit
578	check_err $? "Failed to set $name value"
579
580	local debug_value=$(cat $debug_file)
581	check_err $? "Failed to read $name value from debugfs"
582	[ "$debug_value" == "$rate" ]
583	check_err $? "Unexpected $name debug value $debug_value != $rate"
584
585	local api_value=$(( $(rate_attr_get $handle $name) * 8 / 1000000 ))
586	check_err $? "Failed to get $name attr value"
587	[ "$api_value" == "$rate" ]
588	check_err $? "Unexpected $name attr value $api_value != $rate"
589}
590
591rate_attr_parent_check()
592{
593	local handle=$1
594	local parent=$2
595	local debug_file=$3
596
597	rate_attr_set $handle parent $parent
598	check_err $? "Failed to set parent"
599
600	debug_value=$(cat $debug_file)
601	check_err $? "Failed to get parent debugfs value"
602	[ "$debug_value" == "$parent" ]
603	check_err $? "Unexpected parent debug value $debug_value != $parent"
604
605	api_value=$(rate_attr_get $r_obj parent)
606	check_err $? "Failed to get parent attr value"
607	[ "$api_value" == "$parent" ]
608	check_err $? "Unexpected parent attr value $api_value != $parent"
609}
610
611rate_node_add()
612{
613	local handle=$1
614
615	devlink port function rate add $handle
616}
617
618rate_node_del()
619{
620	local handle=$1
621
622	devlink port function rate del $handle
623}
624
625rate_test()
626{
627	RET=0
628
629	echo $VF_COUNT > /sys/bus/netdevsim/devices/$DEV_NAME/sriov_numvfs
630	devlink dev eswitch set $DL_HANDLE mode switchdev
631	local leafs=`rate_leafs_get $DL_HANDLE`
632	local num_leafs=`echo $leafs | wc -w`
633	[ "$num_leafs" == "$VF_COUNT" ]
634	check_err $? "Expected $VF_COUNT rate leafs but got $num_leafs"
635
636	rate=10
637	for r_obj in $leafs
638	do
639		rate_attr_tx_rate_check $r_obj tx_share $rate \
640			$DEBUGFS_DIR/ports/${r_obj##*/}/tx_share
641		rate=$(($rate+10))
642	done
643
644	rate=100
645	for r_obj in $leafs
646	do
647		rate_attr_tx_rate_check $r_obj tx_max $rate \
648			$DEBUGFS_DIR/ports/${r_obj##*/}/tx_max
649		rate=$(($rate+100))
650	done
651
652	local node1_name='group1'
653	local node1="$DL_HANDLE/$node1_name"
654	rate_node_add "$node1"
655	check_err $? "Failed to add node $node1"
656
657	local num_nodes=`rate_nodes_get $DL_HANDLE | wc -w`
658	[ $num_nodes == 1 ]
659	check_err $? "Expected 1 rate node in output but got $num_nodes"
660
661	local node_tx_share=10
662	rate_attr_tx_rate_check $node1 tx_share $node_tx_share \
663		$DEBUGFS_DIR/rate_nodes/${node1##*/}/tx_share
664
665	local node_tx_max=100
666	rate_attr_tx_rate_check $node1 tx_max $node_tx_max \
667		$DEBUGFS_DIR/rate_nodes/${node1##*/}/tx_max
668
669	rate_node_del "$node1"
670	check_err $? "Failed to delete node $node1"
671	local num_nodes=`rate_nodes_get $DL_HANDLE | wc -w`
672	[ $num_nodes == 0 ]
673	check_err $? "Expected 0 rate node but got $num_nodes"
674
675	local node1_name='group1'
676	local node1="$DL_HANDLE/$node1_name"
677	rate_node_add "$node1"
678	check_err $? "Failed to add node $node1"
679
680	rate_attr_parent_check $r_obj $node1_name \
681		$DEBUGFS_DIR/ports/${r_obj##*/}/rate_parent
682
683	local node2_name='group2'
684	local node2="$DL_HANDLE/$node2_name"
685	rate_node_add "$node2"
686	check_err $? "Failed to add node $node2"
687
688	rate_attr_parent_check $node2 $node1_name \
689		$DEBUGFS_DIR/rate_nodes/$node2_name/rate_parent
690	rate_node_del "$node2"
691	check_err $? "Failed to delete node $node2"
692	rate_attr_set "$r_obj" noparent
693	check_err $? "Failed to unset $r_obj parent node"
694	rate_node_del "$node1"
695	check_err $? "Failed to delete node $node1"
696
697	log_test "rate test"
698}
699
700setup_prepare()
701{
702	modprobe netdevsim
703	echo "$BUS_ADDR $PORT_COUNT" > /sys/bus/netdevsim/new_device
704	while [ ! -d $SYSFS_NET_DIR ] ; do :; done
705}
706
707cleanup()
708{
709	pre_cleanup
710	echo "$BUS_ADDR" > /sys/bus/netdevsim/del_device
711	modprobe -r netdevsim
712}
713
714trap cleanup EXIT
715
716setup_prepare
717
718tests_run
719
720exit $EXIT_STATUS
721