1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3 #
4 # This test is for checking the FIB offload API. It makes use of netdevsim
5 # which registers a listener to the FIB notification chain.
6
7 lib_dir=$(dirname $0)/../../../net/forwarding
8
9 ALL_TESTS="
10 ipv4_identical_routes
11 ipv4_tos
12 ipv4_metric
13 ipv4_replace
14 ipv4_delete
15 ipv4_plen
16 ipv4_replay
17 ipv4_flush
18 ipv4_error_path
19 ipv4_delete_fail
20 ipv6_add
21 ipv6_metric
22 ipv6_append_single
23 ipv6_replace_single
24 ipv6_metric_multipath
25 ipv6_append_multipath
26 ipv6_replace_multipath
27 ipv6_append_multipath_to_single
28 ipv6_delete_single
29 ipv6_delete_multipath
30 ipv6_replay_single
31 ipv6_replay_multipath
32 ipv6_error_path
33 ipv6_delete_fail
34 "
35 NETDEVSIM_PATH=/sys/bus/netdevsim/
36 DEV_ADDR=1337
37 DEV=netdevsim${DEV_ADDR}
38 SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV/net/
39 DEBUGFS_DIR=/sys/kernel/debug/netdevsim/$DEV/
40 NUM_NETIFS=0
41 source $lib_dir/lib.sh
42 source $lib_dir/fib_offload_lib.sh
43
44 DEVLINK_DEV=
45 source $lib_dir/devlink_lib.sh
46 DEVLINK_DEV=netdevsim/${DEV}
47
48 ipv4_identical_routes()
49 {
50 fib_ipv4_identical_routes_test "testns1"
51 }
52
53 ipv4_tos()
54 {
55 fib_ipv4_tos_test "testns1"
56 }
57
58 ipv4_metric()
59 {
60 fib_ipv4_metric_test "testns1"
61 }
62
63 ipv4_replace()
64 {
65 fib_ipv4_replace_test "testns1"
66 }
67
68 ipv4_delete()
69 {
70 fib_ipv4_delete_test "testns1"
71 }
72
73 ipv4_plen()
74 {
75 fib_ipv4_plen_test "testns1"
76 }
77
78 ipv4_replay_metric()
79 {
80 fib_ipv4_replay_metric_test "testns1" "$DEVLINK_DEV"
81 }
82
83 ipv4_replay_tos()
84 {
85 fib_ipv4_replay_tos_test "testns1" "$DEVLINK_DEV"
86 }
87
88 ipv4_replay_plen()
89 {
90 fib_ipv4_replay_plen_test "testns1" "$DEVLINK_DEV"
91 }
92
93 ipv4_replay()
94 {
95 ipv4_replay_metric
96 ipv4_replay_tos
97 ipv4_replay_plen
98 }
99
100 ipv4_flush()
101 {
102 fib_ipv4_flush_test "testns1"
103 }
104
105 ipv4_error_path_add()
106 {
107 local lsb
108
109 RET=0
110
111 ip -n testns1 link add name dummy1 type dummy
112 ip -n testns1 link set dev dummy1 up
113
114 devlink -N testns1 resource set $DEVLINK_DEV path IPv4/fib size 10
115 devlink -N testns1 dev reload $DEVLINK_DEV
116
117 for lsb in $(seq 1 20); do
118 ip -n testns1 route add 192.0.2.${lsb}/32 dev dummy1 \
119 &> /dev/null
120 done
121
122 log_test "IPv4 error path - add"
123
124 ip -n testns1 link del dev dummy1
125 }
126
127 ipv4_error_path_replay()
128 {
129 local lsb
130
131 RET=0
132
133 ip -n testns1 link add name dummy1 type dummy
134 ip -n testns1 link set dev dummy1 up
135
136 devlink -N testns1 resource set $DEVLINK_DEV path IPv4/fib size 100
137 devlink -N testns1 dev reload $DEVLINK_DEV
138
139 for lsb in $(seq 1 20); do
140 ip -n testns1 route add 192.0.2.${lsb}/32 dev dummy1
141 done
142
143 devlink -N testns1 resource set $DEVLINK_DEV path IPv4/fib size 10
144 devlink -N testns1 dev reload $DEVLINK_DEV &> /dev/null
145
146 log_test "IPv4 error path - replay"
147
148 ip -n testns1 link del dev dummy1
149
150 # Successfully reload after deleting all the routes.
151 devlink -N testns1 resource set $DEVLINK_DEV path IPv4/fib size 100
152 devlink -N testns1 dev reload $DEVLINK_DEV
153 }
154
155 ipv4_error_path()
156 {
157 # Test the different error paths of the notifiers by limiting the size
158 # of the "IPv4/fib" resource.
159 ipv4_error_path_add
160 ipv4_error_path_replay
161 }
162
163 ipv4_delete_fail()
164 {
165 RET=0
166
167 echo "y" > $DEBUGFS_DIR/fib/fail_route_delete
168
169 ip -n testns1 link add name dummy1 type dummy
170 ip -n testns1 link set dev dummy1 up
171
172 ip -n testns1 route add 192.0.2.0/24 dev dummy1
173 ip -n testns1 route del 192.0.2.0/24 dev dummy1 &> /dev/null
174
175 # We should not be able to delete the netdev if we are leaking a
176 # reference.
177 ip -n testns1 link del dev dummy1
178
179 log_test "IPv4 route delete failure"
180
181 echo "n" > $DEBUGFS_DIR/fib/fail_route_delete
182 }
183
184 ipv6_add()
185 {
186 fib_ipv6_add_test "testns1"
187 }
188
189 ipv6_metric()
190 {
191 fib_ipv6_metric_test "testns1"
192 }
193
194 ipv6_append_single()
195 {
196 fib_ipv6_append_single_test "testns1"
197 }
198
199 ipv6_replace_single()
200 {
201 fib_ipv6_replace_single_test "testns1"
202 }
203
204 ipv6_metric_multipath()
205 {
206 fib_ipv6_metric_multipath_test "testns1"
207 }
208
209 ipv6_append_multipath()
210 {
211 fib_ipv6_append_multipath_test "testns1"
212 }
213
214 ipv6_replace_multipath()
215 {
216 fib_ipv6_replace_multipath_test "testns1"
217 }
218
219 ipv6_append_multipath_to_single()
220 {
221 fib_ipv6_append_multipath_to_single_test "testns1"
222 }
223
224 ipv6_delete_single()
225 {
226 fib_ipv6_delete_single_test "testns1"
227 }
228
229 ipv6_delete_multipath()
230 {
231 fib_ipv6_delete_multipath_test "testns1"
232 }
233
234 ipv6_replay_single()
235 {
236 fib_ipv6_replay_single_test "testns1" "$DEVLINK_DEV"
237 }
238
239 ipv6_replay_multipath()
240 {
241 fib_ipv6_replay_multipath_test "testns1" "$DEVLINK_DEV"
242 }
243
244 ipv6_error_path_add_single()
245 {
246 local lsb
247
248 RET=0
249
250 ip -n testns1 link add name dummy1 type dummy
251 ip -n testns1 link set dev dummy1 up
252
253 devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 10
254 devlink -N testns1 dev reload $DEVLINK_DEV
255
256 for lsb in $(seq 1 20); do
257 ip -n testns1 route add 2001:db8:1::${lsb}/128 dev dummy1 \
258 &> /dev/null
259 done
260
261 log_test "IPv6 error path - add single"
262
263 ip -n testns1 link del dev dummy1
264 }
265
266 ipv6_error_path_add_multipath()
267 {
268 local lsb
269
270 RET=0
271
272 for i in $(seq 1 2); do
273 ip -n testns1 link add name dummy$i type dummy
274 ip -n testns1 link set dev dummy$i up
275 ip -n testns1 address add 2001:db8:$i::1/64 dev dummy$i
276 done
277
278 devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 10
279 devlink -N testns1 dev reload $DEVLINK_DEV
280
281 for lsb in $(seq 1 20); do
282 ip -n testns1 route add 2001:db8:10::${lsb}/128 \
283 nexthop via 2001:db8:1::2 dev dummy1 \
284 nexthop via 2001:db8:2::2 dev dummy2 &> /dev/null
285 done
286
287 log_test "IPv6 error path - add multipath"
288
289 for i in $(seq 1 2); do
290 ip -n testns1 link del dev dummy$i
291 done
292 }
293
294 ipv6_error_path_replay()
295 {
296 local lsb
297
298 RET=0
299
300 ip -n testns1 link add name dummy1 type dummy
301 ip -n testns1 link set dev dummy1 up
302
303 devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 100
304 devlink -N testns1 dev reload $DEVLINK_DEV
305
306 for lsb in $(seq 1 20); do
307 ip -n testns1 route add 2001:db8:1::${lsb}/128 dev dummy1
308 done
309
310 devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 10
311 devlink -N testns1 dev reload $DEVLINK_DEV &> /dev/null
312
313 log_test "IPv6 error path - replay"
314
315 ip -n testns1 link del dev dummy1
316
317 # Successfully reload after deleting all the routes.
318 devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 100
319 devlink -N testns1 dev reload $DEVLINK_DEV
320 }
321
322 ipv6_error_path()
323 {
324 # Test the different error paths of the notifiers by limiting the size
325 # of the "IPv6/fib" resource.
326 ipv6_error_path_add_single
327 ipv6_error_path_add_multipath
328 ipv6_error_path_replay
329 }
330
331 ipv6_delete_fail()
332 {
333 RET=0
334
335 echo "y" > $DEBUGFS_DIR/fib/fail_route_delete
336
337 ip -n testns1 link add name dummy1 type dummy
338 ip -n testns1 link set dev dummy1 up
339
340 ip -n testns1 route add 2001:db8:1::/64 dev dummy1
341 ip -n testns1 route del 2001:db8:1::/64 dev dummy1 &> /dev/null
342
343 # We should not be able to delete the netdev if we are leaking a
344 # reference.
345 ip -n testns1 link del dev dummy1
346
347 log_test "IPv6 route delete failure"
348
349 echo "n" > $DEBUGFS_DIR/fib/fail_route_delete
350 }
351
352 fib_notify_on_flag_change_set()
353 {
354 local notify=$1; shift
355
356 ip netns exec testns1 sysctl -qw net.ipv4.fib_notify_on_flag_change=$notify
357 ip netns exec testns1 sysctl -qw net.ipv6.fib_notify_on_flag_change=$notify
358
359 log_info "Set fib_notify_on_flag_change to $notify"
360 }
361
362 setup_prepare()
363 {
364 local netdev
365
366 modprobe netdevsim &> /dev/null
367
368 echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device
369 while [ ! -d $SYSFS_NET_DIR ] ; do :; done
370
371 ip netns add testns1
372 if [ $? -ne 0 ]; then
373 echo "Failed to add netns \"testns1\""
374 exit 1
375 fi
376
377 devlink dev reload $DEVLINK_DEV netns testns1
378 if [ $? -ne 0 ]; then
379 echo "Failed to reload into netns \"testns1\""
380 exit 1
381 fi
382 }
383
384 cleanup()
385 {
386 pre_cleanup
387 ip netns del testns1
388 echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device
389 modprobe -r netdevsim &> /dev/null
390 }
391
392 trap cleanup EXIT
393
394 setup_prepare
395
396 fib_notify_on_flag_change_set 1
397 tests_run
398
399 fib_notify_on_flag_change_set 0
400 tests_run
401
402 exit $EXIT_STATUS
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