tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3#
4# This test is for checking the nexthop offload API. It makes use of netdevsim
5# which registers a listener to the nexthop notification chain.
6
7lib_dir=$(dirname $0)/../../../net/forwarding
8
9ALL_TESTS="
10 nexthop_single_add_test
11 nexthop_single_add_err_test
12 nexthop_group_add_test
13 nexthop_group_add_err_test
14 nexthop_group_replace_test
15 nexthop_group_replace_err_test
16 nexthop_single_replace_test
17 nexthop_single_replace_err_test
18 nexthop_single_in_group_replace_test
19 nexthop_single_in_group_replace_err_test
20 nexthop_single_in_group_delete_test
21 nexthop_single_in_group_delete_err_test
22 nexthop_replay_test
23 nexthop_replay_err_test
24"
25NETDEVSIM_PATH=/sys/bus/netdevsim/
26DEV_ADDR=1337
27DEV=netdevsim${DEV_ADDR}
28DEVLINK_DEV=netdevsim/${DEV}
29SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV/net/
30NUM_NETIFS=0
31source $lib_dir/lib.sh
32source $lib_dir/devlink_lib.sh
33
34nexthop_check()
35{
36 local nharg="$1"; shift
37 local expected="$1"; shift
38
39 out=$($IP nexthop show ${nharg} | sed -e 's/ *$//')
40 if [[ "$out" != "$expected" ]]; then
41 return 1
42 fi
43
44 return 0
45}
46
47nexthop_resource_check()
48{
49 local expected_occ=$1; shift
50
51 occ=$($DEVLINK -jp resource show $DEVLINK_DEV \
52 | jq '.[][][] | select(.name=="nexthops") | .["occ"]')
53
54 if [ $expected_occ -ne $occ ]; then
55 return 1
56 fi
57
58 return 0
59}
60
61nexthop_resource_set()
62{
63 local size=$1; shift
64
65 $DEVLINK resource set $DEVLINK_DEV path nexthops size $size
66 $DEVLINK dev reload $DEVLINK_DEV
67}
68
69nexthop_single_add_test()
70{
71 RET=0
72
73 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
74 nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
75 check_err $? "Unexpected nexthop entry"
76
77 nexthop_resource_check 1
78 check_err $? "Wrong nexthop occupancy"
79
80 $IP nexthop del id 1
81 nexthop_resource_check 0
82 check_err $? "Wrong nexthop occupancy after delete"
83
84 log_test "Single nexthop add and delete"
85}
86
87nexthop_single_add_err_test()
88{
89 RET=0
90
91 nexthop_resource_set 1
92
93 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
94
95 $IP nexthop add id 2 via 192.0.2.3 dev dummy1 &> /dev/null
96 check_fail $? "Nexthop addition succeeded when should fail"
97
98 nexthop_resource_check 1
99 check_err $? "Wrong nexthop occupancy"
100
101 log_test "Single nexthop add failure"
102
103 $IP nexthop flush &> /dev/null
104 nexthop_resource_set 9999
105}
106
107nexthop_group_add_test()
108{
109 RET=0
110
111 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
112 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
113
114 $IP nexthop add id 10 group 1/2
115 nexthop_check "id 10" "id 10 group 1/2 trap"
116 check_err $? "Unexpected nexthop group entry"
117
118 nexthop_resource_check 4
119 check_err $? "Wrong nexthop occupancy"
120
121 $IP nexthop del id 10
122 nexthop_resource_check 2
123 check_err $? "Wrong nexthop occupancy after delete"
124
125 $IP nexthop add id 10 group 1,20/2,39
126 nexthop_check "id 10" "id 10 group 1,20/2,39 trap"
127 check_err $? "Unexpected weighted nexthop group entry"
128
129 nexthop_resource_check 61
130 check_err $? "Wrong weighted nexthop occupancy"
131
132 $IP nexthop del id 10
133 nexthop_resource_check 2
134 check_err $? "Wrong nexthop occupancy after delete"
135
136 log_test "Nexthop group add and delete"
137
138 $IP nexthop flush &> /dev/null
139}
140
141nexthop_group_add_err_test()
142{
143 RET=0
144
145 nexthop_resource_set 2
146
147 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
148 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
149
150 $IP nexthop add id 10 group 1/2 &> /dev/null
151 check_fail $? "Nexthop group addition succeeded when should fail"
152
153 nexthop_resource_check 2
154 check_err $? "Wrong nexthop occupancy"
155
156 log_test "Nexthop group add failure"
157
158 $IP nexthop flush &> /dev/null
159 nexthop_resource_set 9999
160}
161
162nexthop_group_replace_test()
163{
164 RET=0
165
166 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
167 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
168 $IP nexthop add id 3 via 192.0.2.4 dev dummy1
169 $IP nexthop add id 10 group 1/2
170
171 $IP nexthop replace id 10 group 1/2/3
172 nexthop_check "id 10" "id 10 group 1/2/3 trap"
173 check_err $? "Unexpected nexthop group entry"
174
175 nexthop_resource_check 6
176 check_err $? "Wrong nexthop occupancy"
177
178 log_test "Nexthop group replace"
179
180 $IP nexthop flush &> /dev/null
181}
182
183nexthop_group_replace_err_test()
184{
185 RET=0
186
187 nexthop_resource_set 5
188
189 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
190 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
191 $IP nexthop add id 3 via 192.0.2.4 dev dummy1
192 $IP nexthop add id 10 group 1/2
193
194 $IP nexthop replace id 10 group 1/2/3 &> /dev/null
195 check_fail $? "Nexthop group replacement succeeded when should fail"
196
197 nexthop_check "id 10" "id 10 group 1/2 trap"
198 check_err $? "Unexpected nexthop group entry after failure"
199
200 nexthop_resource_check 5
201 check_err $? "Wrong nexthop occupancy after failure"
202
203 log_test "Nexthop group replace failure"
204
205 $IP nexthop flush &> /dev/null
206 nexthop_resource_set 9999
207}
208
209nexthop_single_replace_test()
210{
211 RET=0
212
213 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
214
215 $IP nexthop replace id 1 via 192.0.2.3 dev dummy1
216 nexthop_check "id 1" "id 1 via 192.0.2.3 dev dummy1 scope link trap"
217 check_err $? "Unexpected nexthop entry"
218
219 nexthop_resource_check 1
220 check_err $? "Wrong nexthop occupancy"
221
222 log_test "Single nexthop replace"
223
224 $IP nexthop flush &> /dev/null
225}
226
227nexthop_single_replace_err_test()
228{
229 RET=0
230
231 # This is supposed to cause the replace to fail because the new nexthop
232 # is programmed before deleting the replaced one.
233 nexthop_resource_set 1
234
235 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
236
237 $IP nexthop replace id 1 via 192.0.2.3 dev dummy1 &> /dev/null
238 check_fail $? "Nexthop replace succeeded when should fail"
239
240 nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
241 check_err $? "Unexpected nexthop entry after failure"
242
243 nexthop_resource_check 1
244 check_err $? "Wrong nexthop occupancy after failure"
245
246 log_test "Single nexthop replace failure"
247
248 $IP nexthop flush &> /dev/null
249 nexthop_resource_set 9999
250}
251
252nexthop_single_in_group_replace_test()
253{
254 RET=0
255
256 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
257 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
258 $IP nexthop add id 10 group 1/2
259
260 $IP nexthop replace id 1 via 192.0.2.4 dev dummy1
261 check_err $? "Failed to replace nexthop when should not"
262
263 nexthop_check "id 10" "id 10 group 1/2 trap"
264 check_err $? "Unexpected nexthop group entry"
265
266 nexthop_resource_check 4
267 check_err $? "Wrong nexthop occupancy"
268
269 log_test "Single nexthop replace while in group"
270
271 $IP nexthop flush &> /dev/null
272}
273
274nexthop_single_in_group_replace_err_test()
275{
276 RET=0
277
278 nexthop_resource_set 5
279
280 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
281 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
282 $IP nexthop add id 10 group 1/2
283
284 $IP nexthop replace id 1 via 192.0.2.4 dev dummy1 &> /dev/null
285 check_fail $? "Nexthop replacement succeeded when should fail"
286
287 nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
288 check_err $? "Unexpected nexthop entry after failure"
289
290 nexthop_check "id 10" "id 10 group 1/2 trap"
291 check_err $? "Unexpected nexthop group entry after failure"
292
293 nexthop_resource_check 4
294 check_err $? "Wrong nexthop occupancy"
295
296 log_test "Single nexthop replace while in group failure"
297
298 $IP nexthop flush &> /dev/null
299 nexthop_resource_set 9999
300}
301
302nexthop_single_in_group_delete_test()
303{
304 RET=0
305
306 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
307 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
308 $IP nexthop add id 10 group 1/2
309
310 $IP nexthop del id 1
311 nexthop_check "id 10" "id 10 group 2 trap"
312 check_err $? "Unexpected nexthop group entry"
313
314 nexthop_resource_check 2
315 check_err $? "Wrong nexthop occupancy"
316
317 log_test "Single nexthop delete while in group"
318
319 $IP nexthop flush &> /dev/null
320}
321
322nexthop_single_in_group_delete_err_test()
323{
324 RET=0
325
326 # First, nexthop 1 will be deleted, which will reduce the occupancy to
327 # 5. Afterwards, a replace notification will be sent for nexthop group
328 # 10 with only two nexthops. Since the new group is allocated before
329 # the old is deleted, the replacement will fail as it will result in an
330 # occupancy of 7.
331 nexthop_resource_set 6
332
333 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
334 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
335 $IP nexthop add id 3 via 192.0.2.4 dev dummy1
336 $IP nexthop add id 10 group 1/2/3
337
338 $IP nexthop del id 1
339
340 nexthop_resource_check 5
341 check_err $? "Wrong nexthop occupancy"
342
343 log_test "Single nexthop delete while in group failure"
344
345 $IP nexthop flush &> /dev/null
346 nexthop_resource_set 9999
347}
348
349nexthop_replay_test()
350{
351 RET=0
352
353 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
354 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
355 $IP nexthop add id 10 group 1/2
356
357 $DEVLINK dev reload $DEVLINK_DEV
358 check_err $? "Failed to reload when should not"
359
360 nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
361 check_err $? "Unexpected nexthop entry after reload"
362
363 nexthop_check "id 2" "id 2 via 192.0.2.3 dev dummy1 scope link trap"
364 check_err $? "Unexpected nexthop entry after reload"
365
366 nexthop_check "id 10" "id 10 group 1/2 trap"
367 check_err $? "Unexpected nexthop group entry after reload"
368
369 nexthop_resource_check 4
370 check_err $? "Wrong nexthop occupancy"
371
372 log_test "Nexthop replay"
373
374 $IP nexthop flush &> /dev/null
375}
376
377nexthop_replay_err_test()
378{
379 RET=0
380
381 $IP nexthop add id 1 via 192.0.2.2 dev dummy1
382 $IP nexthop add id 2 via 192.0.2.3 dev dummy1
383 $IP nexthop add id 10 group 1/2
384
385 # Reduce size of nexthop resource so that reload will fail.
386 $DEVLINK resource set $DEVLINK_DEV path nexthops size 3
387 $DEVLINK dev reload $DEVLINK_DEV &> /dev/null
388 check_fail $? "Reload succeeded when should fail"
389
390 $DEVLINK resource set $DEVLINK_DEV path nexthops size 9999
391 $DEVLINK dev reload $DEVLINK_DEV
392 check_err $? "Failed to reload when should not"
393
394 log_test "Nexthop replay failure"
395
396 $IP nexthop flush &> /dev/null
397}
398
399setup_prepare()
400{
401 local netdev
402
403 modprobe netdevsim &> /dev/null
404
405 echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device
406 while [ ! -d $SYSFS_NET_DIR ] ; do :; done
407
408 set -e
409
410 ip netns add testns1
411 devlink dev reload $DEVLINK_DEV netns testns1
412
413 IP="ip -netns testns1"
414 DEVLINK="devlink -N testns1"
415
416 $IP link add name dummy1 up type dummy
417 $IP address add 192.0.2.1/24 dev dummy1
418
419 set +e
420}
421
422cleanup()
423{
424 pre_cleanup
425 ip netns del testns1
426 echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device
427 modprobe -r netdevsim &> /dev/null
428}
429
430trap cleanup EXIT
431
432setup_prepare
433
434tests_run
435
436exit $EXIT_STATUS