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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Testsuite for eBPF maps
4 *
5 * Copyright (c) 2014 PLUMgrid, http://plumgrid.com
6 * Copyright (c) 2016 Facebook
7 */
8
9#include <stdio.h>
10#include <unistd.h>
11#include <errno.h>
12#include <string.h>
13#include <assert.h>
14#include <stdlib.h>
15#include <time.h>
16
17#include <sys/wait.h>
18#include <sys/socket.h>
19#include <netinet/in.h>
20#include <linux/bpf.h>
21
22#include <bpf/bpf.h>
23#include <bpf/libbpf.h>
24
25#include "bpf_util.h"
26#include "test_maps.h"
27#include "testing_helpers.h"
28
29int skips;
30
31static struct bpf_map_create_opts map_opts = { .sz = sizeof(map_opts) };
32
33static void test_hashmap(unsigned int task, void *data)
34{
35 long long key, next_key, first_key, value;
36 int fd;
37
38 fd = bpf_map_create(BPF_MAP_TYPE_HASH, NULL, sizeof(key), sizeof(value), 2, &map_opts);
39 if (fd < 0) {
40 printf("Failed to create hashmap '%s'!\n", strerror(errno));
41 exit(1);
42 }
43
44 key = 1;
45 value = 1234;
46 /* Insert key=1 element. */
47 assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0);
48
49 value = 0;
50 /* BPF_NOEXIST means add new element if it doesn't exist. */
51 assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) < 0 &&
52 /* key=1 already exists. */
53 errno == EEXIST);
54
55 /* -1 is an invalid flag. */
56 assert(bpf_map_update_elem(fd, &key, &value, -1) < 0 &&
57 errno == EINVAL);
58
59 /* Check that key=1 can be found. */
60 assert(bpf_map_lookup_elem(fd, &key, &value) == 0 && value == 1234);
61
62 key = 2;
63 value = 1234;
64 /* Insert key=2 element. */
65 assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0);
66
67 /* Check that key=2 matches the value and delete it */
68 assert(bpf_map_lookup_and_delete_elem(fd, &key, &value) == 0 && value == 1234);
69
70 /* Check that key=2 is not found. */
71 assert(bpf_map_lookup_elem(fd, &key, &value) < 0 && errno == ENOENT);
72
73 /* BPF_EXIST means update existing element. */
74 assert(bpf_map_update_elem(fd, &key, &value, BPF_EXIST) < 0 &&
75 /* key=2 is not there. */
76 errno == ENOENT);
77
78 /* Insert key=2 element. */
79 assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == 0);
80
81 /* key=1 and key=2 were inserted, check that key=0 cannot be
82 * inserted due to max_entries limit.
83 */
84 key = 0;
85 assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) < 0 &&
86 errno == E2BIG);
87
88 /* Update existing element, though the map is full. */
89 key = 1;
90 assert(bpf_map_update_elem(fd, &key, &value, BPF_EXIST) == 0);
91 key = 2;
92 assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0);
93 key = 3;
94 assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) < 0 &&
95 errno == E2BIG);
96
97 /* Check that key = 0 doesn't exist. */
98 key = 0;
99 assert(bpf_map_delete_elem(fd, &key) < 0 && errno == ENOENT);
100
101 /* Iterate over two elements. */
102 assert(bpf_map_get_next_key(fd, NULL, &first_key) == 0 &&
103 (first_key == 1 || first_key == 2));
104 assert(bpf_map_get_next_key(fd, &key, &next_key) == 0 &&
105 (next_key == first_key));
106 assert(bpf_map_get_next_key(fd, &next_key, &next_key) == 0 &&
107 (next_key == 1 || next_key == 2) &&
108 (next_key != first_key));
109 assert(bpf_map_get_next_key(fd, &next_key, &next_key) < 0 &&
110 errno == ENOENT);
111
112 /* Delete both elements. */
113 key = 1;
114 assert(bpf_map_delete_elem(fd, &key) == 0);
115 key = 2;
116 assert(bpf_map_delete_elem(fd, &key) == 0);
117 assert(bpf_map_delete_elem(fd, &key) < 0 && errno == ENOENT);
118
119 key = 0;
120 /* Check that map is empty. */
121 assert(bpf_map_get_next_key(fd, NULL, &next_key) < 0 &&
122 errno == ENOENT);
123 assert(bpf_map_get_next_key(fd, &key, &next_key) < 0 &&
124 errno == ENOENT);
125
126 close(fd);
127}
128
129static void test_hashmap_sizes(unsigned int task, void *data)
130{
131 int fd, i, j;
132
133 for (i = 1; i <= 512; i <<= 1)
134 for (j = 1; j <= 1 << 18; j <<= 1) {
135 fd = bpf_map_create(BPF_MAP_TYPE_HASH, NULL, i, j, 2, &map_opts);
136 if (fd < 0) {
137 if (errno == ENOMEM)
138 return;
139 printf("Failed to create hashmap key=%d value=%d '%s'\n",
140 i, j, strerror(errno));
141 exit(1);
142 }
143 close(fd);
144 usleep(10); /* give kernel time to destroy */
145 }
146}
147
148static void test_hashmap_percpu(unsigned int task, void *data)
149{
150 unsigned int nr_cpus = bpf_num_possible_cpus();
151 BPF_DECLARE_PERCPU(long, value);
152 long long key, next_key, first_key;
153 int expected_key_mask = 0;
154 int fd, i;
155
156 fd = bpf_map_create(BPF_MAP_TYPE_PERCPU_HASH, NULL, sizeof(key),
157 sizeof(bpf_percpu(value, 0)), 2, &map_opts);
158 if (fd < 0) {
159 printf("Failed to create hashmap '%s'!\n", strerror(errno));
160 exit(1);
161 }
162
163 for (i = 0; i < nr_cpus; i++)
164 bpf_percpu(value, i) = i + 100;
165
166 key = 1;
167 /* Insert key=1 element. */
168 assert(!(expected_key_mask & key));
169 assert(bpf_map_update_elem(fd, &key, value, BPF_ANY) == 0);
170
171 /* Lookup and delete elem key=1 and check value. */
172 assert(bpf_map_lookup_and_delete_elem(fd, &key, value) == 0 &&
173 bpf_percpu(value,0) == 100);
174
175 for (i = 0; i < nr_cpus; i++)
176 bpf_percpu(value,i) = i + 100;
177
178 /* Insert key=1 element which should not exist. */
179 assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) == 0);
180 expected_key_mask |= key;
181
182 /* BPF_NOEXIST means add new element if it doesn't exist. */
183 assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) < 0 &&
184 /* key=1 already exists. */
185 errno == EEXIST);
186
187 /* -1 is an invalid flag. */
188 assert(bpf_map_update_elem(fd, &key, value, -1) < 0 &&
189 errno == EINVAL);
190
191 /* Check that key=1 can be found. Value could be 0 if the lookup
192 * was run from a different CPU.
193 */
194 bpf_percpu(value, 0) = 1;
195 assert(bpf_map_lookup_elem(fd, &key, value) == 0 &&
196 bpf_percpu(value, 0) == 100);
197
198 key = 2;
199 /* Check that key=2 is not found. */
200 assert(bpf_map_lookup_elem(fd, &key, value) < 0 && errno == ENOENT);
201
202 /* BPF_EXIST means update existing element. */
203 assert(bpf_map_update_elem(fd, &key, value, BPF_EXIST) < 0 &&
204 /* key=2 is not there. */
205 errno == ENOENT);
206
207 /* Insert key=2 element. */
208 assert(!(expected_key_mask & key));
209 assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) == 0);
210 expected_key_mask |= key;
211
212 /* key=1 and key=2 were inserted, check that key=0 cannot be
213 * inserted due to max_entries limit.
214 */
215 key = 0;
216 assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) < 0 &&
217 errno == E2BIG);
218
219 /* Check that key = 0 doesn't exist. */
220 assert(bpf_map_delete_elem(fd, &key) < 0 && errno == ENOENT);
221
222 /* Iterate over two elements. */
223 assert(bpf_map_get_next_key(fd, NULL, &first_key) == 0 &&
224 ((expected_key_mask & first_key) == first_key));
225 while (!bpf_map_get_next_key(fd, &key, &next_key)) {
226 if (first_key) {
227 assert(next_key == first_key);
228 first_key = 0;
229 }
230 assert((expected_key_mask & next_key) == next_key);
231 expected_key_mask &= ~next_key;
232
233 assert(bpf_map_lookup_elem(fd, &next_key, value) == 0);
234
235 for (i = 0; i < nr_cpus; i++)
236 assert(bpf_percpu(value, i) == i + 100);
237
238 key = next_key;
239 }
240 assert(errno == ENOENT);
241
242 /* Update with BPF_EXIST. */
243 key = 1;
244 assert(bpf_map_update_elem(fd, &key, value, BPF_EXIST) == 0);
245
246 /* Delete both elements. */
247 key = 1;
248 assert(bpf_map_delete_elem(fd, &key) == 0);
249 key = 2;
250 assert(bpf_map_delete_elem(fd, &key) == 0);
251 assert(bpf_map_delete_elem(fd, &key) < 0 && errno == ENOENT);
252
253 key = 0;
254 /* Check that map is empty. */
255 assert(bpf_map_get_next_key(fd, NULL, &next_key) < 0 &&
256 errno == ENOENT);
257 assert(bpf_map_get_next_key(fd, &key, &next_key) < 0 &&
258 errno == ENOENT);
259
260 close(fd);
261}
262
263#define VALUE_SIZE 3
264static int helper_fill_hashmap(int max_entries)
265{
266 int i, fd, ret;
267 long long key, value[VALUE_SIZE] = {};
268
269 fd = bpf_map_create(BPF_MAP_TYPE_HASH, NULL, sizeof(key), sizeof(value),
270 max_entries, &map_opts);
271 CHECK(fd < 0,
272 "failed to create hashmap",
273 "err: %s, flags: 0x%x\n", strerror(errno), map_opts.map_flags);
274
275 for (i = 0; i < max_entries; i++) {
276 key = i; value[0] = key;
277 ret = bpf_map_update_elem(fd, &key, value, BPF_NOEXIST);
278 CHECK(ret != 0,
279 "can't update hashmap",
280 "err: %s\n", strerror(ret));
281 }
282
283 return fd;
284}
285
286static void test_hashmap_walk(unsigned int task, void *data)
287{
288 int fd, i, max_entries = 10000;
289 long long key, value[VALUE_SIZE], next_key;
290 bool next_key_valid = true;
291
292 fd = helper_fill_hashmap(max_entries);
293
294 for (i = 0; bpf_map_get_next_key(fd, !i ? NULL : &key,
295 &next_key) == 0; i++) {
296 key = next_key;
297 assert(bpf_map_lookup_elem(fd, &key, value) == 0);
298 }
299
300 assert(i == max_entries);
301
302 assert(bpf_map_get_next_key(fd, NULL, &key) == 0);
303 for (i = 0; next_key_valid; i++) {
304 next_key_valid = bpf_map_get_next_key(fd, &key, &next_key) == 0;
305 assert(bpf_map_lookup_elem(fd, &key, value) == 0);
306 value[0]++;
307 assert(bpf_map_update_elem(fd, &key, value, BPF_EXIST) == 0);
308 key = next_key;
309 }
310
311 assert(i == max_entries);
312
313 for (i = 0; bpf_map_get_next_key(fd, !i ? NULL : &key,
314 &next_key) == 0; i++) {
315 key = next_key;
316 assert(bpf_map_lookup_elem(fd, &key, value) == 0);
317 assert(value[0] - 1 == key);
318 }
319
320 assert(i == max_entries);
321 close(fd);
322}
323
324static void test_hashmap_zero_seed(void)
325{
326 int i, first, second, old_flags;
327 long long key, next_first, next_second;
328
329 old_flags = map_opts.map_flags;
330 map_opts.map_flags |= BPF_F_ZERO_SEED;
331
332 first = helper_fill_hashmap(3);
333 second = helper_fill_hashmap(3);
334
335 for (i = 0; ; i++) {
336 void *key_ptr = !i ? NULL : &key;
337
338 if (bpf_map_get_next_key(first, key_ptr, &next_first) != 0)
339 break;
340
341 CHECK(bpf_map_get_next_key(second, key_ptr, &next_second) != 0,
342 "next_key for second map must succeed",
343 "key_ptr: %p", key_ptr);
344 CHECK(next_first != next_second,
345 "keys must match",
346 "i: %d first: %lld second: %lld\n", i,
347 next_first, next_second);
348
349 key = next_first;
350 }
351
352 map_opts.map_flags = old_flags;
353 close(first);
354 close(second);
355}
356
357static void test_arraymap(unsigned int task, void *data)
358{
359 int key, next_key, fd;
360 long long value;
361
362 fd = bpf_map_create(BPF_MAP_TYPE_ARRAY, NULL, sizeof(key), sizeof(value), 2, NULL);
363 if (fd < 0) {
364 printf("Failed to create arraymap '%s'!\n", strerror(errno));
365 exit(1);
366 }
367
368 key = 1;
369 value = 1234;
370 /* Insert key=1 element. */
371 assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0);
372
373 value = 0;
374 assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) < 0 &&
375 errno == EEXIST);
376
377 /* Check that key=1 can be found. */
378 assert(bpf_map_lookup_elem(fd, &key, &value) == 0 && value == 1234);
379
380 key = 0;
381 /* Check that key=0 is also found and zero initialized. */
382 assert(bpf_map_lookup_elem(fd, &key, &value) == 0 && value == 0);
383
384 /* key=0 and key=1 were inserted, check that key=2 cannot be inserted
385 * due to max_entries limit.
386 */
387 key = 2;
388 assert(bpf_map_update_elem(fd, &key, &value, BPF_EXIST) < 0 &&
389 errno == E2BIG);
390
391 /* Check that key = 2 doesn't exist. */
392 assert(bpf_map_lookup_elem(fd, &key, &value) < 0 && errno == ENOENT);
393
394 /* Iterate over two elements. */
395 assert(bpf_map_get_next_key(fd, NULL, &next_key) == 0 &&
396 next_key == 0);
397 assert(bpf_map_get_next_key(fd, &key, &next_key) == 0 &&
398 next_key == 0);
399 assert(bpf_map_get_next_key(fd, &next_key, &next_key) == 0 &&
400 next_key == 1);
401 assert(bpf_map_get_next_key(fd, &next_key, &next_key) < 0 &&
402 errno == ENOENT);
403
404 /* Delete shouldn't succeed. */
405 key = 1;
406 assert(bpf_map_delete_elem(fd, &key) < 0 && errno == EINVAL);
407
408 close(fd);
409}
410
411static void test_arraymap_percpu(unsigned int task, void *data)
412{
413 unsigned int nr_cpus = bpf_num_possible_cpus();
414 BPF_DECLARE_PERCPU(long, values);
415 int key, next_key, fd, i;
416
417 fd = bpf_map_create(BPF_MAP_TYPE_PERCPU_ARRAY, NULL, sizeof(key),
418 sizeof(bpf_percpu(values, 0)), 2, NULL);
419 if (fd < 0) {
420 printf("Failed to create arraymap '%s'!\n", strerror(errno));
421 exit(1);
422 }
423
424 for (i = 0; i < nr_cpus; i++)
425 bpf_percpu(values, i) = i + 100;
426
427 key = 1;
428 /* Insert key=1 element. */
429 assert(bpf_map_update_elem(fd, &key, values, BPF_ANY) == 0);
430
431 bpf_percpu(values, 0) = 0;
432 assert(bpf_map_update_elem(fd, &key, values, BPF_NOEXIST) < 0 &&
433 errno == EEXIST);
434
435 /* Check that key=1 can be found. */
436 assert(bpf_map_lookup_elem(fd, &key, values) == 0 &&
437 bpf_percpu(values, 0) == 100);
438
439 key = 0;
440 /* Check that key=0 is also found and zero initialized. */
441 assert(bpf_map_lookup_elem(fd, &key, values) == 0 &&
442 bpf_percpu(values, 0) == 0 &&
443 bpf_percpu(values, nr_cpus - 1) == 0);
444
445 /* Check that key=2 cannot be inserted due to max_entries limit. */
446 key = 2;
447 assert(bpf_map_update_elem(fd, &key, values, BPF_EXIST) < 0 &&
448 errno == E2BIG);
449
450 /* Check that key = 2 doesn't exist. */
451 assert(bpf_map_lookup_elem(fd, &key, values) < 0 && errno == ENOENT);
452
453 /* Iterate over two elements. */
454 assert(bpf_map_get_next_key(fd, NULL, &next_key) == 0 &&
455 next_key == 0);
456 assert(bpf_map_get_next_key(fd, &key, &next_key) == 0 &&
457 next_key == 0);
458 assert(bpf_map_get_next_key(fd, &next_key, &next_key) == 0 &&
459 next_key == 1);
460 assert(bpf_map_get_next_key(fd, &next_key, &next_key) < 0 &&
461 errno == ENOENT);
462
463 /* Delete shouldn't succeed. */
464 key = 1;
465 assert(bpf_map_delete_elem(fd, &key) < 0 && errno == EINVAL);
466
467 close(fd);
468}
469
470static void test_arraymap_percpu_many_keys(void)
471{
472 unsigned int nr_cpus = bpf_num_possible_cpus();
473 BPF_DECLARE_PERCPU(long, values);
474 /* nr_keys is not too large otherwise the test stresses percpu
475 * allocator more than anything else
476 */
477 unsigned int nr_keys = 2000;
478 int key, fd, i;
479
480 fd = bpf_map_create(BPF_MAP_TYPE_PERCPU_ARRAY, NULL, sizeof(key),
481 sizeof(bpf_percpu(values, 0)), nr_keys, NULL);
482 if (fd < 0) {
483 printf("Failed to create per-cpu arraymap '%s'!\n",
484 strerror(errno));
485 exit(1);
486 }
487
488 for (i = 0; i < nr_cpus; i++)
489 bpf_percpu(values, i) = i + 10;
490
491 for (key = 0; key < nr_keys; key++)
492 assert(bpf_map_update_elem(fd, &key, values, BPF_ANY) == 0);
493
494 for (key = 0; key < nr_keys; key++) {
495 for (i = 0; i < nr_cpus; i++)
496 bpf_percpu(values, i) = 0;
497
498 assert(bpf_map_lookup_elem(fd, &key, values) == 0);
499
500 for (i = 0; i < nr_cpus; i++)
501 assert(bpf_percpu(values, i) == i + 10);
502 }
503
504 close(fd);
505}
506
507static void test_devmap(unsigned int task, void *data)
508{
509 int fd;
510 __u32 key, value;
511
512 fd = bpf_map_create(BPF_MAP_TYPE_DEVMAP, NULL, sizeof(key), sizeof(value), 2, NULL);
513 if (fd < 0) {
514 printf("Failed to create devmap '%s'!\n", strerror(errno));
515 exit(1);
516 }
517
518 close(fd);
519}
520
521static void test_devmap_hash(unsigned int task, void *data)
522{
523 int fd;
524 __u32 key, value;
525
526 fd = bpf_map_create(BPF_MAP_TYPE_DEVMAP_HASH, NULL, sizeof(key), sizeof(value), 2, NULL);
527 if (fd < 0) {
528 printf("Failed to create devmap_hash '%s'!\n", strerror(errno));
529 exit(1);
530 }
531
532 close(fd);
533}
534
535static void test_queuemap(unsigned int task, void *data)
536{
537 const int MAP_SIZE = 32;
538 __u32 vals[MAP_SIZE + MAP_SIZE/2], val;
539 int fd, i;
540
541 /* Fill test values to be used */
542 for (i = 0; i < MAP_SIZE + MAP_SIZE/2; i++)
543 vals[i] = rand();
544
545 /* Invalid key size */
546 fd = bpf_map_create(BPF_MAP_TYPE_QUEUE, NULL, 4, sizeof(val), MAP_SIZE, &map_opts);
547 assert(fd < 0 && errno == EINVAL);
548
549 fd = bpf_map_create(BPF_MAP_TYPE_QUEUE, NULL, 0, sizeof(val), MAP_SIZE, &map_opts);
550 /* Queue map does not support BPF_F_NO_PREALLOC */
551 if (map_opts.map_flags & BPF_F_NO_PREALLOC) {
552 assert(fd < 0 && errno == EINVAL);
553 return;
554 }
555 if (fd < 0) {
556 printf("Failed to create queuemap '%s'!\n", strerror(errno));
557 exit(1);
558 }
559
560 /* Push MAP_SIZE elements */
561 for (i = 0; i < MAP_SIZE; i++)
562 assert(bpf_map_update_elem(fd, NULL, &vals[i], 0) == 0);
563
564 /* Check that element cannot be pushed due to max_entries limit */
565 assert(bpf_map_update_elem(fd, NULL, &val, 0) < 0 &&
566 errno == E2BIG);
567
568 /* Peek element */
569 assert(bpf_map_lookup_elem(fd, NULL, &val) == 0 && val == vals[0]);
570
571 /* Replace half elements */
572 for (i = MAP_SIZE; i < MAP_SIZE + MAP_SIZE/2; i++)
573 assert(bpf_map_update_elem(fd, NULL, &vals[i], BPF_EXIST) == 0);
574
575 /* Pop all elements */
576 for (i = MAP_SIZE/2; i < MAP_SIZE + MAP_SIZE/2; i++)
577 assert(bpf_map_lookup_and_delete_elem(fd, NULL, &val) == 0 &&
578 val == vals[i]);
579
580 /* Check that there are not elements left */
581 assert(bpf_map_lookup_and_delete_elem(fd, NULL, &val) < 0 &&
582 errno == ENOENT);
583
584 /* Check that non supported functions set errno to EINVAL */
585 assert(bpf_map_delete_elem(fd, NULL) < 0 && errno == EINVAL);
586 assert(bpf_map_get_next_key(fd, NULL, NULL) < 0 && errno == EINVAL);
587
588 close(fd);
589}
590
591static void test_stackmap(unsigned int task, void *data)
592{
593 const int MAP_SIZE = 32;
594 __u32 vals[MAP_SIZE + MAP_SIZE/2], val;
595 int fd, i;
596
597 /* Fill test values to be used */
598 for (i = 0; i < MAP_SIZE + MAP_SIZE/2; i++)
599 vals[i] = rand();
600
601 /* Invalid key size */
602 fd = bpf_map_create(BPF_MAP_TYPE_STACK, NULL, 4, sizeof(val), MAP_SIZE, &map_opts);
603 assert(fd < 0 && errno == EINVAL);
604
605 fd = bpf_map_create(BPF_MAP_TYPE_STACK, NULL, 0, sizeof(val), MAP_SIZE, &map_opts);
606 /* Stack map does not support BPF_F_NO_PREALLOC */
607 if (map_opts.map_flags & BPF_F_NO_PREALLOC) {
608 assert(fd < 0 && errno == EINVAL);
609 return;
610 }
611 if (fd < 0) {
612 printf("Failed to create stackmap '%s'!\n", strerror(errno));
613 exit(1);
614 }
615
616 /* Push MAP_SIZE elements */
617 for (i = 0; i < MAP_SIZE; i++)
618 assert(bpf_map_update_elem(fd, NULL, &vals[i], 0) == 0);
619
620 /* Check that element cannot be pushed due to max_entries limit */
621 assert(bpf_map_update_elem(fd, NULL, &val, 0) < 0 &&
622 errno == E2BIG);
623
624 /* Peek element */
625 assert(bpf_map_lookup_elem(fd, NULL, &val) == 0 && val == vals[i - 1]);
626
627 /* Replace half elements */
628 for (i = MAP_SIZE; i < MAP_SIZE + MAP_SIZE/2; i++)
629 assert(bpf_map_update_elem(fd, NULL, &vals[i], BPF_EXIST) == 0);
630
631 /* Pop all elements */
632 for (i = MAP_SIZE + MAP_SIZE/2 - 1; i >= MAP_SIZE/2; i--)
633 assert(bpf_map_lookup_and_delete_elem(fd, NULL, &val) == 0 &&
634 val == vals[i]);
635
636 /* Check that there are not elements left */
637 assert(bpf_map_lookup_and_delete_elem(fd, NULL, &val) < 0 &&
638 errno == ENOENT);
639
640 /* Check that non supported functions set errno to EINVAL */
641 assert(bpf_map_delete_elem(fd, NULL) < 0 && errno == EINVAL);
642 assert(bpf_map_get_next_key(fd, NULL, NULL) < 0 && errno == EINVAL);
643
644 close(fd);
645}
646
647#include <sys/ioctl.h>
648#include <arpa/inet.h>
649#include <sys/select.h>
650#include <linux/err.h>
651#define SOCKMAP_PARSE_PROG "./sockmap_parse_prog.bpf.o"
652#define SOCKMAP_VERDICT_PROG "./sockmap_verdict_prog.bpf.o"
653#define SOCKMAP_TCP_MSG_PROG "./sockmap_tcp_msg_prog.bpf.o"
654static void test_sockmap(unsigned int tasks, void *data)
655{
656 struct bpf_map *bpf_map_rx, *bpf_map_tx, *bpf_map_msg, *bpf_map_break;
657 int map_fd_msg = 0, map_fd_rx = 0, map_fd_tx = 0, map_fd_break;
658 struct bpf_object *parse_obj, *verdict_obj, *msg_obj;
659 int ports[] = {50200, 50201, 50202, 50204};
660 int err, i, fd, udp, sfd[6] = {0xdeadbeef};
661 u8 buf[20] = {0x0, 0x5, 0x3, 0x2, 0x1, 0x0};
662 int parse_prog, verdict_prog, msg_prog;
663 struct sockaddr_in addr;
664 int one = 1, s, sc, rc;
665 struct timeval to;
666 __u32 key, value;
667 pid_t pid[tasks];
668 fd_set w;
669
670 /* Create some sockets to use with sockmap */
671 for (i = 0; i < 2; i++) {
672 sfd[i] = socket(AF_INET, SOCK_STREAM, 0);
673 if (sfd[i] < 0)
674 goto out;
675 err = setsockopt(sfd[i], SOL_SOCKET, SO_REUSEADDR,
676 (char *)&one, sizeof(one));
677 if (err) {
678 printf("failed to setsockopt\n");
679 goto out;
680 }
681 err = ioctl(sfd[i], FIONBIO, (char *)&one);
682 if (err < 0) {
683 printf("failed to ioctl\n");
684 goto out;
685 }
686 memset(&addr, 0, sizeof(struct sockaddr_in));
687 addr.sin_family = AF_INET;
688 addr.sin_addr.s_addr = inet_addr("127.0.0.1");
689 addr.sin_port = htons(ports[i]);
690 err = bind(sfd[i], (struct sockaddr *)&addr, sizeof(addr));
691 if (err < 0) {
692 printf("failed to bind: err %i: %i:%i\n",
693 err, i, sfd[i]);
694 goto out;
695 }
696 err = listen(sfd[i], 32);
697 if (err < 0) {
698 printf("failed to listen\n");
699 goto out;
700 }
701 }
702
703 for (i = 2; i < 4; i++) {
704 sfd[i] = socket(AF_INET, SOCK_STREAM, 0);
705 if (sfd[i] < 0)
706 goto out;
707 err = setsockopt(sfd[i], SOL_SOCKET, SO_REUSEADDR,
708 (char *)&one, sizeof(one));
709 if (err) {
710 printf("set sock opt\n");
711 goto out;
712 }
713 memset(&addr, 0, sizeof(struct sockaddr_in));
714 addr.sin_family = AF_INET;
715 addr.sin_addr.s_addr = inet_addr("127.0.0.1");
716 addr.sin_port = htons(ports[i - 2]);
717 err = connect(sfd[i], (struct sockaddr *)&addr, sizeof(addr));
718 if (err) {
719 printf("failed to connect\n");
720 goto out;
721 }
722 }
723
724
725 for (i = 4; i < 6; i++) {
726 sfd[i] = accept(sfd[i - 4], NULL, NULL);
727 if (sfd[i] < 0) {
728 printf("accept failed\n");
729 goto out;
730 }
731 }
732
733 /* Test sockmap with connected sockets */
734 fd = bpf_map_create(BPF_MAP_TYPE_SOCKMAP, NULL,
735 sizeof(key), sizeof(value),
736 6, NULL);
737 if (fd < 0) {
738 if (!libbpf_probe_bpf_map_type(BPF_MAP_TYPE_SOCKMAP, NULL)) {
739 printf("%s SKIP (unsupported map type BPF_MAP_TYPE_SOCKMAP)\n",
740 __func__);
741 skips++;
742 for (i = 0; i < 6; i++)
743 close(sfd[i]);
744 return;
745 }
746
747 printf("Failed to create sockmap %i\n", fd);
748 goto out_sockmap;
749 }
750
751 /* Test update with unsupported UDP socket */
752 udp = socket(AF_INET, SOCK_DGRAM, 0);
753 i = 0;
754 err = bpf_map_update_elem(fd, &i, &udp, BPF_ANY);
755 if (err) {
756 printf("Failed socket update SOCK_DGRAM '%i:%i'\n",
757 i, udp);
758 goto out_sockmap;
759 }
760 close(udp);
761
762 /* Test update without programs */
763 for (i = 0; i < 6; i++) {
764 err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
765 if (err) {
766 printf("Failed noprog update sockmap '%i:%i'\n",
767 i, sfd[i]);
768 goto out_sockmap;
769 }
770 }
771
772 /* Test attaching/detaching bad fds */
773 err = bpf_prog_attach(-1, fd, BPF_SK_SKB_STREAM_PARSER, 0);
774 if (!err) {
775 printf("Failed invalid parser prog attach\n");
776 goto out_sockmap;
777 }
778
779 err = bpf_prog_attach(-1, fd, BPF_SK_SKB_STREAM_VERDICT, 0);
780 if (!err) {
781 printf("Failed invalid verdict prog attach\n");
782 goto out_sockmap;
783 }
784
785 err = bpf_prog_attach(-1, fd, BPF_SK_MSG_VERDICT, 0);
786 if (!err) {
787 printf("Failed invalid msg verdict prog attach\n");
788 goto out_sockmap;
789 }
790
791 err = bpf_prog_attach(-1, fd, __MAX_BPF_ATTACH_TYPE, 0);
792 if (!err) {
793 printf("Failed unknown prog attach\n");
794 goto out_sockmap;
795 }
796
797 err = bpf_prog_detach(fd, BPF_SK_SKB_STREAM_PARSER);
798 if (!err) {
799 printf("Failed empty parser prog detach\n");
800 goto out_sockmap;
801 }
802
803 err = bpf_prog_detach(fd, BPF_SK_SKB_STREAM_VERDICT);
804 if (!err) {
805 printf("Failed empty verdict prog detach\n");
806 goto out_sockmap;
807 }
808
809 err = bpf_prog_detach(fd, BPF_SK_MSG_VERDICT);
810 if (!err) {
811 printf("Failed empty msg verdict prog detach\n");
812 goto out_sockmap;
813 }
814
815 err = bpf_prog_detach(fd, __MAX_BPF_ATTACH_TYPE);
816 if (!err) {
817 printf("Detach invalid prog successful\n");
818 goto out_sockmap;
819 }
820
821 /* Load SK_SKB program and Attach */
822 err = bpf_prog_test_load(SOCKMAP_PARSE_PROG,
823 BPF_PROG_TYPE_SK_SKB, &parse_obj, &parse_prog);
824 if (err) {
825 printf("Failed to load SK_SKB parse prog\n");
826 goto out_sockmap;
827 }
828
829 err = bpf_prog_test_load(SOCKMAP_TCP_MSG_PROG,
830 BPF_PROG_TYPE_SK_MSG, &msg_obj, &msg_prog);
831 if (err) {
832 printf("Failed to load SK_SKB msg prog\n");
833 goto out_sockmap;
834 }
835
836 err = bpf_prog_test_load(SOCKMAP_VERDICT_PROG,
837 BPF_PROG_TYPE_SK_SKB, &verdict_obj, &verdict_prog);
838 if (err) {
839 printf("Failed to load SK_SKB verdict prog\n");
840 goto out_sockmap;
841 }
842
843 bpf_map_rx = bpf_object__find_map_by_name(verdict_obj, "sock_map_rx");
844 if (!bpf_map_rx) {
845 printf("Failed to load map rx from verdict prog\n");
846 goto out_sockmap;
847 }
848
849 map_fd_rx = bpf_map__fd(bpf_map_rx);
850 if (map_fd_rx < 0) {
851 printf("Failed to get map rx fd\n");
852 goto out_sockmap;
853 }
854
855 bpf_map_tx = bpf_object__find_map_by_name(verdict_obj, "sock_map_tx");
856 if (!bpf_map_tx) {
857 printf("Failed to load map tx from verdict prog\n");
858 goto out_sockmap;
859 }
860
861 map_fd_tx = bpf_map__fd(bpf_map_tx);
862 if (map_fd_tx < 0) {
863 printf("Failed to get map tx fd\n");
864 goto out_sockmap;
865 }
866
867 bpf_map_msg = bpf_object__find_map_by_name(verdict_obj, "sock_map_msg");
868 if (!bpf_map_msg) {
869 printf("Failed to load map msg from msg_verdict prog\n");
870 goto out_sockmap;
871 }
872
873 map_fd_msg = bpf_map__fd(bpf_map_msg);
874 if (map_fd_msg < 0) {
875 printf("Failed to get map msg fd\n");
876 goto out_sockmap;
877 }
878
879 bpf_map_break = bpf_object__find_map_by_name(verdict_obj, "sock_map_break");
880 if (!bpf_map_break) {
881 printf("Failed to load map tx from verdict prog\n");
882 goto out_sockmap;
883 }
884
885 map_fd_break = bpf_map__fd(bpf_map_break);
886 if (map_fd_break < 0) {
887 printf("Failed to get map tx fd\n");
888 goto out_sockmap;
889 }
890
891 err = bpf_prog_attach(parse_prog, map_fd_break,
892 BPF_SK_SKB_STREAM_PARSER, 0);
893 if (!err) {
894 printf("Allowed attaching SK_SKB program to invalid map\n");
895 goto out_sockmap;
896 }
897
898 err = bpf_prog_attach(parse_prog, map_fd_rx,
899 BPF_SK_SKB_STREAM_PARSER, 0);
900 if (err) {
901 printf("Failed stream parser bpf prog attach\n");
902 goto out_sockmap;
903 }
904
905 err = bpf_prog_attach(verdict_prog, map_fd_rx,
906 BPF_SK_SKB_STREAM_VERDICT, 0);
907 if (err) {
908 printf("Failed stream verdict bpf prog attach\n");
909 goto out_sockmap;
910 }
911
912 err = bpf_prog_attach(msg_prog, map_fd_msg, BPF_SK_MSG_VERDICT, 0);
913 if (err) {
914 printf("Failed msg verdict bpf prog attach\n");
915 goto out_sockmap;
916 }
917
918 err = bpf_prog_attach(verdict_prog, map_fd_rx,
919 __MAX_BPF_ATTACH_TYPE, 0);
920 if (!err) {
921 printf("Attached unknown bpf prog\n");
922 goto out_sockmap;
923 }
924
925 /* Test map update elem afterwards fd lives in fd and map_fd */
926 for (i = 2; i < 6; i++) {
927 err = bpf_map_update_elem(map_fd_rx, &i, &sfd[i], BPF_ANY);
928 if (err) {
929 printf("Failed map_fd_rx update sockmap %i '%i:%i'\n",
930 err, i, sfd[i]);
931 goto out_sockmap;
932 }
933 err = bpf_map_update_elem(map_fd_tx, &i, &sfd[i], BPF_ANY);
934 if (err) {
935 printf("Failed map_fd_tx update sockmap %i '%i:%i'\n",
936 err, i, sfd[i]);
937 goto out_sockmap;
938 }
939 }
940
941 /* Test map delete elem and remove send/recv sockets */
942 for (i = 2; i < 4; i++) {
943 err = bpf_map_delete_elem(map_fd_rx, &i);
944 if (err) {
945 printf("Failed delete sockmap rx %i '%i:%i'\n",
946 err, i, sfd[i]);
947 goto out_sockmap;
948 }
949 err = bpf_map_delete_elem(map_fd_tx, &i);
950 if (err) {
951 printf("Failed delete sockmap tx %i '%i:%i'\n",
952 err, i, sfd[i]);
953 goto out_sockmap;
954 }
955 }
956
957 /* Put sfd[2] (sending fd below) into msg map to test sendmsg bpf */
958 i = 0;
959 err = bpf_map_update_elem(map_fd_msg, &i, &sfd[2], BPF_ANY);
960 if (err) {
961 printf("Failed map_fd_msg update sockmap %i\n", err);
962 goto out_sockmap;
963 }
964
965 /* Test map send/recv */
966 for (i = 0; i < 2; i++) {
967 buf[0] = i;
968 buf[1] = 0x5;
969 sc = send(sfd[2], buf, 20, 0);
970 if (sc < 0) {
971 printf("Failed sockmap send\n");
972 goto out_sockmap;
973 }
974
975 FD_ZERO(&w);
976 FD_SET(sfd[3], &w);
977 to.tv_sec = 30;
978 to.tv_usec = 0;
979 s = select(sfd[3] + 1, &w, NULL, NULL, &to);
980 if (s == -1) {
981 perror("Failed sockmap select()");
982 goto out_sockmap;
983 } else if (!s) {
984 printf("Failed sockmap unexpected timeout\n");
985 goto out_sockmap;
986 }
987
988 if (!FD_ISSET(sfd[3], &w)) {
989 printf("Failed sockmap select/recv\n");
990 goto out_sockmap;
991 }
992
993 rc = recv(sfd[3], buf, sizeof(buf), 0);
994 if (rc < 0) {
995 printf("Failed sockmap recv\n");
996 goto out_sockmap;
997 }
998 }
999
1000 /* Negative null entry lookup from datapath should be dropped */
1001 buf[0] = 1;
1002 buf[1] = 12;
1003 sc = send(sfd[2], buf, 20, 0);
1004 if (sc < 0) {
1005 printf("Failed sockmap send\n");
1006 goto out_sockmap;
1007 }
1008
1009 /* Push fd into same slot */
1010 i = 2;
1011 err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_NOEXIST);
1012 if (!err) {
1013 printf("Failed allowed sockmap dup slot BPF_NOEXIST\n");
1014 goto out_sockmap;
1015 }
1016
1017 err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
1018 if (err) {
1019 printf("Failed sockmap update new slot BPF_ANY\n");
1020 goto out_sockmap;
1021 }
1022
1023 err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_EXIST);
1024 if (err) {
1025 printf("Failed sockmap update new slot BPF_EXIST\n");
1026 goto out_sockmap;
1027 }
1028
1029 /* Delete the elems without programs */
1030 for (i = 2; i < 6; i++) {
1031 err = bpf_map_delete_elem(fd, &i);
1032 if (err) {
1033 printf("Failed delete sockmap %i '%i:%i'\n",
1034 err, i, sfd[i]);
1035 }
1036 }
1037
1038 /* Test having multiple maps open and set with programs on same fds */
1039 err = bpf_prog_attach(parse_prog, fd,
1040 BPF_SK_SKB_STREAM_PARSER, 0);
1041 if (err) {
1042 printf("Failed fd bpf parse prog attach\n");
1043 goto out_sockmap;
1044 }
1045 err = bpf_prog_attach(verdict_prog, fd,
1046 BPF_SK_SKB_STREAM_VERDICT, 0);
1047 if (err) {
1048 printf("Failed fd bpf verdict prog attach\n");
1049 goto out_sockmap;
1050 }
1051
1052 for (i = 4; i < 6; i++) {
1053 err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
1054 if (!err) {
1055 printf("Failed allowed duplicate programs in update ANY sockmap %i '%i:%i'\n",
1056 err, i, sfd[i]);
1057 goto out_sockmap;
1058 }
1059 err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_NOEXIST);
1060 if (!err) {
1061 printf("Failed allowed duplicate program in update NOEXIST sockmap %i '%i:%i'\n",
1062 err, i, sfd[i]);
1063 goto out_sockmap;
1064 }
1065 err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_EXIST);
1066 if (!err) {
1067 printf("Failed allowed duplicate program in update EXIST sockmap %i '%i:%i'\n",
1068 err, i, sfd[i]);
1069 goto out_sockmap;
1070 }
1071 }
1072
1073 /* Test tasks number of forked operations */
1074 for (i = 0; i < tasks; i++) {
1075 pid[i] = fork();
1076 if (pid[i] == 0) {
1077 for (i = 0; i < 6; i++) {
1078 bpf_map_delete_elem(map_fd_tx, &i);
1079 bpf_map_delete_elem(map_fd_rx, &i);
1080 bpf_map_update_elem(map_fd_tx, &i,
1081 &sfd[i], BPF_ANY);
1082 bpf_map_update_elem(map_fd_rx, &i,
1083 &sfd[i], BPF_ANY);
1084 }
1085 exit(0);
1086 } else if (pid[i] == -1) {
1087 printf("Couldn't spawn #%d process!\n", i);
1088 exit(1);
1089 }
1090 }
1091
1092 for (i = 0; i < tasks; i++) {
1093 int status;
1094
1095 assert(waitpid(pid[i], &status, 0) == pid[i]);
1096 assert(status == 0);
1097 }
1098
1099 err = bpf_prog_detach2(parse_prog, map_fd_rx, __MAX_BPF_ATTACH_TYPE);
1100 if (!err) {
1101 printf("Detached an invalid prog type.\n");
1102 goto out_sockmap;
1103 }
1104
1105 err = bpf_prog_detach2(parse_prog, map_fd_rx, BPF_SK_SKB_STREAM_PARSER);
1106 if (err) {
1107 printf("Failed parser prog detach\n");
1108 goto out_sockmap;
1109 }
1110
1111 err = bpf_prog_detach2(verdict_prog, map_fd_rx, BPF_SK_SKB_STREAM_VERDICT);
1112 if (err) {
1113 printf("Failed parser prog detach\n");
1114 goto out_sockmap;
1115 }
1116
1117 /* Test map close sockets and empty maps */
1118 for (i = 0; i < 6; i++) {
1119 bpf_map_delete_elem(map_fd_tx, &i);
1120 bpf_map_delete_elem(map_fd_rx, &i);
1121 close(sfd[i]);
1122 }
1123 close(fd);
1124 close(map_fd_rx);
1125 bpf_object__close(parse_obj);
1126 bpf_object__close(msg_obj);
1127 bpf_object__close(verdict_obj);
1128 return;
1129out:
1130 for (i = 0; i < 6; i++)
1131 close(sfd[i]);
1132 printf("Failed to create sockmap '%i:%s'!\n", i, strerror(errno));
1133 exit(1);
1134out_sockmap:
1135 for (i = 0; i < 6; i++) {
1136 if (map_fd_tx)
1137 bpf_map_delete_elem(map_fd_tx, &i);
1138 if (map_fd_rx)
1139 bpf_map_delete_elem(map_fd_rx, &i);
1140 close(sfd[i]);
1141 }
1142 close(fd);
1143 exit(1);
1144}
1145
1146#define MAPINMAP_PROG "./test_map_in_map.bpf.o"
1147#define MAPINMAP_INVALID_PROG "./test_map_in_map_invalid.bpf.o"
1148static void test_map_in_map(void)
1149{
1150 struct bpf_object *obj;
1151 struct bpf_map *map;
1152 int mim_fd, fd, err;
1153 int pos = 0;
1154 struct bpf_map_info info = {};
1155 __u32 len = sizeof(info);
1156 __u32 id = 0;
1157 libbpf_print_fn_t old_print_fn;
1158
1159 obj = bpf_object__open(MAPINMAP_PROG);
1160
1161 fd = bpf_map_create(BPF_MAP_TYPE_HASH, NULL, sizeof(int), sizeof(int), 2, NULL);
1162 if (fd < 0) {
1163 printf("Failed to create hashmap '%s'!\n", strerror(errno));
1164 exit(1);
1165 }
1166
1167 map = bpf_object__find_map_by_name(obj, "mim_array");
1168 if (!map) {
1169 printf("Failed to load array of maps from test prog\n");
1170 goto out_map_in_map;
1171 }
1172 err = bpf_map__set_inner_map_fd(map, fd);
1173 if (err) {
1174 printf("Failed to set inner_map_fd for array of maps\n");
1175 goto out_map_in_map;
1176 }
1177
1178 map = bpf_object__find_map_by_name(obj, "mim_hash");
1179 if (!map) {
1180 printf("Failed to load hash of maps from test prog\n");
1181 goto out_map_in_map;
1182 }
1183 err = bpf_map__set_inner_map_fd(map, fd);
1184 if (err) {
1185 printf("Failed to set inner_map_fd for hash of maps\n");
1186 goto out_map_in_map;
1187 }
1188
1189 err = bpf_object__load(obj);
1190 if (err) {
1191 printf("Failed to load test prog\n");
1192 goto out_map_in_map;
1193 }
1194
1195 map = bpf_object__find_map_by_name(obj, "mim_array");
1196 if (!map) {
1197 printf("Failed to load array of maps from test prog\n");
1198 goto out_map_in_map;
1199 }
1200 mim_fd = bpf_map__fd(map);
1201 if (mim_fd < 0) {
1202 printf("Failed to get descriptor for array of maps\n");
1203 goto out_map_in_map;
1204 }
1205
1206 err = bpf_map_update_elem(mim_fd, &pos, &fd, 0);
1207 if (err) {
1208 printf("Failed to update array of maps\n");
1209 goto out_map_in_map;
1210 }
1211
1212 map = bpf_object__find_map_by_name(obj, "mim_hash");
1213 if (!map) {
1214 printf("Failed to load hash of maps from test prog\n");
1215 goto out_map_in_map;
1216 }
1217 mim_fd = bpf_map__fd(map);
1218 if (mim_fd < 0) {
1219 printf("Failed to get descriptor for hash of maps\n");
1220 goto out_map_in_map;
1221 }
1222
1223 err = bpf_map_update_elem(mim_fd, &pos, &fd, 0);
1224 if (err) {
1225 printf("Failed to update hash of maps\n");
1226 goto out_map_in_map;
1227 }
1228
1229 close(fd);
1230 fd = -1;
1231 bpf_object__close(obj);
1232
1233 /* Test that failing bpf_object__create_map() destroys the inner map */
1234 obj = bpf_object__open(MAPINMAP_INVALID_PROG);
1235 err = libbpf_get_error(obj);
1236 if (err) {
1237 printf("Failed to load %s program: %d %d",
1238 MAPINMAP_INVALID_PROG, err, errno);
1239 goto out_map_in_map;
1240 }
1241
1242 map = bpf_object__find_map_by_name(obj, "mim");
1243 if (!map) {
1244 printf("Failed to load array of maps from test prog\n");
1245 goto out_map_in_map;
1246 }
1247
1248 old_print_fn = libbpf_set_print(NULL);
1249
1250 err = bpf_object__load(obj);
1251 if (!err) {
1252 printf("Loading obj supposed to fail\n");
1253 goto out_map_in_map;
1254 }
1255
1256 libbpf_set_print(old_print_fn);
1257
1258 /* Iterate over all maps to check whether the internal map
1259 * ("mim.internal") has been destroyed.
1260 */
1261 while (true) {
1262 err = bpf_map_get_next_id(id, &id);
1263 if (err) {
1264 if (errno == ENOENT)
1265 break;
1266 printf("Failed to get next map: %d", errno);
1267 goto out_map_in_map;
1268 }
1269
1270 fd = bpf_map_get_fd_by_id(id);
1271 if (fd < 0) {
1272 if (errno == ENOENT)
1273 continue;
1274 printf("Failed to get map by id %u: %d", id, errno);
1275 goto out_map_in_map;
1276 }
1277
1278 err = bpf_map_get_info_by_fd(fd, &info, &len);
1279 if (err) {
1280 printf("Failed to get map info by fd %d: %d", fd,
1281 errno);
1282 goto out_map_in_map;
1283 }
1284
1285 if (!strcmp(info.name, "mim.inner")) {
1286 printf("Inner map mim.inner was not destroyed\n");
1287 goto out_map_in_map;
1288 }
1289
1290 close(fd);
1291 }
1292
1293 bpf_object__close(obj);
1294 return;
1295
1296out_map_in_map:
1297 if (fd >= 0)
1298 close(fd);
1299 exit(1);
1300}
1301
1302#define MAP_SIZE (32 * 1024)
1303
1304static void test_map_large(void)
1305{
1306
1307 struct bigkey {
1308 int a;
1309 char b[4096];
1310 long long c;
1311 } key;
1312 int fd, i, value;
1313
1314 fd = bpf_map_create(BPF_MAP_TYPE_HASH, NULL, sizeof(key), sizeof(value),
1315 MAP_SIZE, &map_opts);
1316 if (fd < 0) {
1317 printf("Failed to create large map '%s'!\n", strerror(errno));
1318 exit(1);
1319 }
1320
1321 for (i = 0; i < MAP_SIZE; i++) {
1322 key = (struct bigkey) { .c = i };
1323 value = i;
1324
1325 assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == 0);
1326 }
1327
1328 key.c = -1;
1329 assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) < 0 &&
1330 errno == E2BIG);
1331
1332 /* Iterate through all elements. */
1333 assert(bpf_map_get_next_key(fd, NULL, &key) == 0);
1334 key.c = -1;
1335 for (i = 0; i < MAP_SIZE; i++)
1336 assert(bpf_map_get_next_key(fd, &key, &key) == 0);
1337 assert(bpf_map_get_next_key(fd, &key, &key) < 0 && errno == ENOENT);
1338
1339 key.c = 0;
1340 assert(bpf_map_lookup_elem(fd, &key, &value) == 0 && value == 0);
1341 key.a = 1;
1342 assert(bpf_map_lookup_elem(fd, &key, &value) < 0 && errno == ENOENT);
1343
1344 close(fd);
1345}
1346
1347#define run_parallel(N, FN, DATA) \
1348 printf("Fork %u tasks to '" #FN "'\n", N); \
1349 __run_parallel(N, FN, DATA)
1350
1351static void __run_parallel(unsigned int tasks,
1352 void (*fn)(unsigned int task, void *data),
1353 void *data)
1354{
1355 pid_t pid[tasks];
1356 int i;
1357
1358 fflush(stdout);
1359
1360 for (i = 0; i < tasks; i++) {
1361 pid[i] = fork();
1362 if (pid[i] == 0) {
1363 fn(i, data);
1364 exit(0);
1365 } else if (pid[i] == -1) {
1366 printf("Couldn't spawn #%d process!\n", i);
1367 exit(1);
1368 }
1369 }
1370
1371 for (i = 0; i < tasks; i++) {
1372 int status;
1373
1374 assert(waitpid(pid[i], &status, 0) == pid[i]);
1375 assert(status == 0);
1376 }
1377}
1378
1379static void test_map_stress(void)
1380{
1381 run_parallel(100, test_hashmap_walk, NULL);
1382 run_parallel(100, test_hashmap, NULL);
1383 run_parallel(100, test_hashmap_percpu, NULL);
1384 run_parallel(100, test_hashmap_sizes, NULL);
1385
1386 run_parallel(100, test_arraymap, NULL);
1387 run_parallel(100, test_arraymap_percpu, NULL);
1388}
1389
1390#define TASKS 100
1391
1392#define DO_UPDATE 1
1393#define DO_DELETE 0
1394
1395#define MAP_RETRIES 20
1396#define MAX_DELAY_US 50000
1397#define MIN_DELAY_RANGE_US 5000
1398
1399static bool retry_for_again_or_busy(int err)
1400{
1401 return (err == EAGAIN || err == EBUSY);
1402}
1403
1404int map_update_retriable(int map_fd, const void *key, const void *value, int flags, int attempts,
1405 retry_for_error_fn need_retry)
1406{
1407 int delay = rand() % MIN_DELAY_RANGE_US;
1408
1409 while (bpf_map_update_elem(map_fd, key, value, flags)) {
1410 if (!attempts || !need_retry(errno))
1411 return -errno;
1412
1413 if (delay <= MAX_DELAY_US / 2)
1414 delay *= 2;
1415
1416 usleep(delay);
1417 attempts--;
1418 }
1419
1420 return 0;
1421}
1422
1423static int map_delete_retriable(int map_fd, const void *key, int attempts)
1424{
1425 int delay = rand() % MIN_DELAY_RANGE_US;
1426
1427 while (bpf_map_delete_elem(map_fd, key)) {
1428 if (!attempts || (errno != EAGAIN && errno != EBUSY))
1429 return -errno;
1430
1431 if (delay <= MAX_DELAY_US / 2)
1432 delay *= 2;
1433
1434 usleep(delay);
1435 attempts--;
1436 }
1437
1438 return 0;
1439}
1440
1441static void test_update_delete(unsigned int fn, void *data)
1442{
1443 int do_update = ((int *)data)[1];
1444 int fd = ((int *)data)[0];
1445 int i, key, value, err;
1446
1447 if (fn & 1)
1448 test_hashmap_walk(fn, NULL);
1449 for (i = fn; i < MAP_SIZE; i += TASKS) {
1450 key = value = i;
1451
1452 if (do_update) {
1453 err = map_update_retriable(fd, &key, &value, BPF_NOEXIST, MAP_RETRIES,
1454 retry_for_again_or_busy);
1455 if (err)
1456 printf("error %d %d\n", err, errno);
1457 assert(err == 0);
1458 err = map_update_retriable(fd, &key, &value, BPF_EXIST, MAP_RETRIES,
1459 retry_for_again_or_busy);
1460 if (err)
1461 printf("error %d %d\n", err, errno);
1462 assert(err == 0);
1463 } else {
1464 err = map_delete_retriable(fd, &key, MAP_RETRIES);
1465 if (err)
1466 printf("error %d %d\n", err, errno);
1467 assert(err == 0);
1468 }
1469 }
1470}
1471
1472static void test_map_parallel(void)
1473{
1474 int i, fd, key = 0, value = 0, j = 0;
1475 int data[2];
1476
1477 fd = bpf_map_create(BPF_MAP_TYPE_HASH, NULL, sizeof(key), sizeof(value),
1478 MAP_SIZE, &map_opts);
1479 if (fd < 0) {
1480 printf("Failed to create map for parallel test '%s'!\n",
1481 strerror(errno));
1482 exit(1);
1483 }
1484
1485again:
1486 /* Use the same fd in children to add elements to this map:
1487 * child_0 adds key=0, key=1024, key=2048, ...
1488 * child_1 adds key=1, key=1025, key=2049, ...
1489 * child_1023 adds key=1023, ...
1490 */
1491 data[0] = fd;
1492 data[1] = DO_UPDATE;
1493 run_parallel(TASKS, test_update_delete, data);
1494
1495 /* Check that key=0 is already there. */
1496 assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) < 0 &&
1497 errno == EEXIST);
1498
1499 /* Check that all elements were inserted. */
1500 assert(bpf_map_get_next_key(fd, NULL, &key) == 0);
1501 key = -1;
1502 for (i = 0; i < MAP_SIZE; i++)
1503 assert(bpf_map_get_next_key(fd, &key, &key) == 0);
1504 assert(bpf_map_get_next_key(fd, &key, &key) < 0 && errno == ENOENT);
1505
1506 /* Another check for all elements */
1507 for (i = 0; i < MAP_SIZE; i++) {
1508 key = MAP_SIZE - i - 1;
1509
1510 assert(bpf_map_lookup_elem(fd, &key, &value) == 0 &&
1511 value == key);
1512 }
1513
1514 /* Now let's delete all elements in parallel. */
1515 data[1] = DO_DELETE;
1516 run_parallel(TASKS, test_update_delete, data);
1517
1518 /* Nothing should be left. */
1519 key = -1;
1520 assert(bpf_map_get_next_key(fd, NULL, &key) < 0 && errno == ENOENT);
1521 assert(bpf_map_get_next_key(fd, &key, &key) < 0 && errno == ENOENT);
1522
1523 key = 0;
1524 bpf_map_delete_elem(fd, &key);
1525 if (j++ < 5)
1526 goto again;
1527 close(fd);
1528}
1529
1530static void test_map_rdonly(void)
1531{
1532 int fd, key = 0, value = 0;
1533 __u32 old_flags;
1534
1535 old_flags = map_opts.map_flags;
1536 map_opts.map_flags |= BPF_F_RDONLY;
1537 fd = bpf_map_create(BPF_MAP_TYPE_HASH, NULL, sizeof(key), sizeof(value),
1538 MAP_SIZE, &map_opts);
1539 map_opts.map_flags = old_flags;
1540 if (fd < 0) {
1541 printf("Failed to create map for read only test '%s'!\n",
1542 strerror(errno));
1543 exit(1);
1544 }
1545
1546 key = 1;
1547 value = 1234;
1548 /* Try to insert key=1 element. */
1549 assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) < 0 &&
1550 errno == EPERM);
1551
1552 /* Check that key=1 is not found. */
1553 assert(bpf_map_lookup_elem(fd, &key, &value) < 0 && errno == ENOENT);
1554 assert(bpf_map_get_next_key(fd, &key, &value) < 0 && errno == ENOENT);
1555
1556 close(fd);
1557}
1558
1559static void test_map_wronly_hash(void)
1560{
1561 int fd, key = 0, value = 0;
1562 __u32 old_flags;
1563
1564 old_flags = map_opts.map_flags;
1565 map_opts.map_flags |= BPF_F_WRONLY;
1566 fd = bpf_map_create(BPF_MAP_TYPE_HASH, NULL, sizeof(key), sizeof(value),
1567 MAP_SIZE, &map_opts);
1568 map_opts.map_flags = old_flags;
1569 if (fd < 0) {
1570 printf("Failed to create map for write only test '%s'!\n",
1571 strerror(errno));
1572 exit(1);
1573 }
1574
1575 key = 1;
1576 value = 1234;
1577 /* Insert key=1 element. */
1578 assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0);
1579
1580 /* Check that reading elements and keys from the map is not allowed. */
1581 assert(bpf_map_lookup_elem(fd, &key, &value) < 0 && errno == EPERM);
1582 assert(bpf_map_get_next_key(fd, &key, &value) < 0 && errno == EPERM);
1583
1584 close(fd);
1585}
1586
1587static void test_map_wronly_stack_or_queue(enum bpf_map_type map_type)
1588{
1589 int fd, value = 0;
1590 __u32 old_flags;
1591
1592
1593 assert(map_type == BPF_MAP_TYPE_QUEUE ||
1594 map_type == BPF_MAP_TYPE_STACK);
1595 old_flags = map_opts.map_flags;
1596 map_opts.map_flags |= BPF_F_WRONLY;
1597 fd = bpf_map_create(map_type, NULL, 0, sizeof(value), MAP_SIZE, &map_opts);
1598 map_opts.map_flags = old_flags;
1599 /* Stack/Queue maps do not support BPF_F_NO_PREALLOC */
1600 if (map_opts.map_flags & BPF_F_NO_PREALLOC) {
1601 assert(fd < 0 && errno == EINVAL);
1602 return;
1603 }
1604 if (fd < 0) {
1605 printf("Failed to create map '%s'!\n", strerror(errno));
1606 exit(1);
1607 }
1608
1609 value = 1234;
1610 assert(bpf_map_update_elem(fd, NULL, &value, BPF_ANY) == 0);
1611
1612 /* Peek element should fail */
1613 assert(bpf_map_lookup_elem(fd, NULL, &value) < 0 && errno == EPERM);
1614
1615 /* Pop element should fail */
1616 assert(bpf_map_lookup_and_delete_elem(fd, NULL, &value) < 0 &&
1617 errno == EPERM);
1618
1619 close(fd);
1620}
1621
1622static void test_map_wronly(void)
1623{
1624 test_map_wronly_hash();
1625 test_map_wronly_stack_or_queue(BPF_MAP_TYPE_STACK);
1626 test_map_wronly_stack_or_queue(BPF_MAP_TYPE_QUEUE);
1627}
1628
1629static void prepare_reuseport_grp(int type, int map_fd, size_t map_elem_size,
1630 __s64 *fds64, __u64 *sk_cookies,
1631 unsigned int n)
1632{
1633 socklen_t optlen, addrlen;
1634 struct sockaddr_in6 s6;
1635 const __u32 index0 = 0;
1636 const int optval = 1;
1637 unsigned int i;
1638 u64 sk_cookie;
1639 void *value;
1640 __s32 fd32;
1641 __s64 fd64;
1642 int err;
1643
1644 s6.sin6_family = AF_INET6;
1645 s6.sin6_addr = in6addr_any;
1646 s6.sin6_port = 0;
1647 addrlen = sizeof(s6);
1648 optlen = sizeof(sk_cookie);
1649
1650 for (i = 0; i < n; i++) {
1651 fd64 = socket(AF_INET6, type, 0);
1652 CHECK(fd64 == -1, "socket()",
1653 "sock_type:%d fd64:%lld errno:%d\n",
1654 type, fd64, errno);
1655
1656 err = setsockopt(fd64, SOL_SOCKET, SO_REUSEPORT,
1657 &optval, sizeof(optval));
1658 CHECK(err == -1, "setsockopt(SO_REUSEPORT)",
1659 "err:%d errno:%d\n", err, errno);
1660
1661 /* reuseport_array does not allow unbound sk */
1662 if (map_elem_size == sizeof(__u64))
1663 value = &fd64;
1664 else {
1665 assert(map_elem_size == sizeof(__u32));
1666 fd32 = (__s32)fd64;
1667 value = &fd32;
1668 }
1669 err = bpf_map_update_elem(map_fd, &index0, value, BPF_ANY);
1670 CHECK(err >= 0 || errno != EINVAL,
1671 "reuseport array update unbound sk",
1672 "sock_type:%d err:%d errno:%d\n",
1673 type, err, errno);
1674
1675 err = bind(fd64, (struct sockaddr *)&s6, sizeof(s6));
1676 CHECK(err == -1, "bind()",
1677 "sock_type:%d err:%d errno:%d\n", type, err, errno);
1678
1679 if (i == 0) {
1680 err = getsockname(fd64, (struct sockaddr *)&s6,
1681 &addrlen);
1682 CHECK(err == -1, "getsockname()",
1683 "sock_type:%d err:%d errno:%d\n",
1684 type, err, errno);
1685 }
1686
1687 err = getsockopt(fd64, SOL_SOCKET, SO_COOKIE, &sk_cookie,
1688 &optlen);
1689 CHECK(err == -1, "getsockopt(SO_COOKIE)",
1690 "sock_type:%d err:%d errno:%d\n", type, err, errno);
1691
1692 if (type == SOCK_STREAM) {
1693 /*
1694 * reuseport_array does not allow
1695 * non-listening tcp sk.
1696 */
1697 err = bpf_map_update_elem(map_fd, &index0, value,
1698 BPF_ANY);
1699 CHECK(err >= 0 || errno != EINVAL,
1700 "reuseport array update non-listening sk",
1701 "sock_type:%d err:%d errno:%d\n",
1702 type, err, errno);
1703 err = listen(fd64, 0);
1704 CHECK(err == -1, "listen()",
1705 "sock_type:%d, err:%d errno:%d\n",
1706 type, err, errno);
1707 }
1708
1709 fds64[i] = fd64;
1710 sk_cookies[i] = sk_cookie;
1711 }
1712}
1713
1714static void test_reuseport_array(void)
1715{
1716#define REUSEPORT_FD_IDX(err, last) ({ (err) ? last : !last; })
1717
1718 const __u32 array_size = 4, index0 = 0, index3 = 3;
1719 int types[2] = { SOCK_STREAM, SOCK_DGRAM }, type;
1720 __u64 grpa_cookies[2], sk_cookie, map_cookie;
1721 __s64 grpa_fds64[2] = { -1, -1 }, fd64 = -1;
1722 const __u32 bad_index = array_size;
1723 int map_fd, err, t, f;
1724 __u32 fds_idx = 0;
1725 int fd;
1726
1727 map_fd = bpf_map_create(BPF_MAP_TYPE_REUSEPORT_SOCKARRAY, NULL,
1728 sizeof(__u32), sizeof(__u64), array_size, NULL);
1729 CHECK(map_fd < 0, "reuseport array create",
1730 "map_fd:%d, errno:%d\n", map_fd, errno);
1731
1732 /* Test lookup/update/delete with invalid index */
1733 err = bpf_map_delete_elem(map_fd, &bad_index);
1734 CHECK(err >= 0 || errno != E2BIG, "reuseport array del >=max_entries",
1735 "err:%d errno:%d\n", err, errno);
1736
1737 err = bpf_map_update_elem(map_fd, &bad_index, &fd64, BPF_ANY);
1738 CHECK(err >= 0 || errno != E2BIG,
1739 "reuseport array update >=max_entries",
1740 "err:%d errno:%d\n", err, errno);
1741
1742 err = bpf_map_lookup_elem(map_fd, &bad_index, &map_cookie);
1743 CHECK(err >= 0 || errno != ENOENT,
1744 "reuseport array update >=max_entries",
1745 "err:%d errno:%d\n", err, errno);
1746
1747 /* Test lookup/delete non existence elem */
1748 err = bpf_map_lookup_elem(map_fd, &index3, &map_cookie);
1749 CHECK(err >= 0 || errno != ENOENT,
1750 "reuseport array lookup not-exist elem",
1751 "err:%d errno:%d\n", err, errno);
1752 err = bpf_map_delete_elem(map_fd, &index3);
1753 CHECK(err >= 0 || errno != ENOENT,
1754 "reuseport array del not-exist elem",
1755 "err:%d errno:%d\n", err, errno);
1756
1757 for (t = 0; t < ARRAY_SIZE(types); t++) {
1758 type = types[t];
1759
1760 prepare_reuseport_grp(type, map_fd, sizeof(__u64), grpa_fds64,
1761 grpa_cookies, ARRAY_SIZE(grpa_fds64));
1762
1763 /* Test BPF_* update flags */
1764 /* BPF_EXIST failure case */
1765 err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
1766 BPF_EXIST);
1767 CHECK(err >= 0 || errno != ENOENT,
1768 "reuseport array update empty elem BPF_EXIST",
1769 "sock_type:%d err:%d errno:%d\n",
1770 type, err, errno);
1771 fds_idx = REUSEPORT_FD_IDX(err, fds_idx);
1772
1773 /* BPF_NOEXIST success case */
1774 err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
1775 BPF_NOEXIST);
1776 CHECK(err < 0,
1777 "reuseport array update empty elem BPF_NOEXIST",
1778 "sock_type:%d err:%d errno:%d\n",
1779 type, err, errno);
1780 fds_idx = REUSEPORT_FD_IDX(err, fds_idx);
1781
1782 /* BPF_EXIST success case. */
1783 err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
1784 BPF_EXIST);
1785 CHECK(err < 0,
1786 "reuseport array update same elem BPF_EXIST",
1787 "sock_type:%d err:%d errno:%d\n", type, err, errno);
1788 fds_idx = REUSEPORT_FD_IDX(err, fds_idx);
1789
1790 /* BPF_NOEXIST failure case */
1791 err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
1792 BPF_NOEXIST);
1793 CHECK(err >= 0 || errno != EEXIST,
1794 "reuseport array update non-empty elem BPF_NOEXIST",
1795 "sock_type:%d err:%d errno:%d\n",
1796 type, err, errno);
1797 fds_idx = REUSEPORT_FD_IDX(err, fds_idx);
1798
1799 /* BPF_ANY case (always succeed) */
1800 err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
1801 BPF_ANY);
1802 CHECK(err < 0,
1803 "reuseport array update same sk with BPF_ANY",
1804 "sock_type:%d err:%d errno:%d\n", type, err, errno);
1805
1806 fd64 = grpa_fds64[fds_idx];
1807 sk_cookie = grpa_cookies[fds_idx];
1808
1809 /* The same sk cannot be added to reuseport_array twice */
1810 err = bpf_map_update_elem(map_fd, &index3, &fd64, BPF_ANY);
1811 CHECK(err >= 0 || errno != EBUSY,
1812 "reuseport array update same sk with same index",
1813 "sock_type:%d err:%d errno:%d\n",
1814 type, err, errno);
1815
1816 err = bpf_map_update_elem(map_fd, &index0, &fd64, BPF_ANY);
1817 CHECK(err >= 0 || errno != EBUSY,
1818 "reuseport array update same sk with different index",
1819 "sock_type:%d err:%d errno:%d\n",
1820 type, err, errno);
1821
1822 /* Test delete elem */
1823 err = bpf_map_delete_elem(map_fd, &index3);
1824 CHECK(err < 0, "reuseport array delete sk",
1825 "sock_type:%d err:%d errno:%d\n",
1826 type, err, errno);
1827
1828 /* Add it back with BPF_NOEXIST */
1829 err = bpf_map_update_elem(map_fd, &index3, &fd64, BPF_NOEXIST);
1830 CHECK(err < 0,
1831 "reuseport array re-add with BPF_NOEXIST after del",
1832 "sock_type:%d err:%d errno:%d\n", type, err, errno);
1833
1834 /* Test cookie */
1835 err = bpf_map_lookup_elem(map_fd, &index3, &map_cookie);
1836 CHECK(err < 0 || sk_cookie != map_cookie,
1837 "reuseport array lookup re-added sk",
1838 "sock_type:%d err:%d errno:%d sk_cookie:0x%llx map_cookie:0x%llxn",
1839 type, err, errno, sk_cookie, map_cookie);
1840
1841 /* Test elem removed by close() */
1842 for (f = 0; f < ARRAY_SIZE(grpa_fds64); f++)
1843 close(grpa_fds64[f]);
1844 err = bpf_map_lookup_elem(map_fd, &index3, &map_cookie);
1845 CHECK(err >= 0 || errno != ENOENT,
1846 "reuseport array lookup after close()",
1847 "sock_type:%d err:%d errno:%d\n",
1848 type, err, errno);
1849 }
1850
1851 /* Test SOCK_RAW */
1852 fd64 = socket(AF_INET6, SOCK_RAW, IPPROTO_UDP);
1853 CHECK(fd64 == -1, "socket(SOCK_RAW)", "err:%d errno:%d\n",
1854 err, errno);
1855 err = bpf_map_update_elem(map_fd, &index3, &fd64, BPF_NOEXIST);
1856 CHECK(err >= 0 || errno != ENOTSUPP, "reuseport array update SOCK_RAW",
1857 "err:%d errno:%d\n", err, errno);
1858 close(fd64);
1859
1860 /* Close the 64 bit value map */
1861 close(map_fd);
1862
1863 /* Test 32 bit fd */
1864 map_fd = bpf_map_create(BPF_MAP_TYPE_REUSEPORT_SOCKARRAY, NULL,
1865 sizeof(__u32), sizeof(__u32), array_size, NULL);
1866 CHECK(map_fd < 0, "reuseport array create",
1867 "map_fd:%d, errno:%d\n", map_fd, errno);
1868 prepare_reuseport_grp(SOCK_STREAM, map_fd, sizeof(__u32), &fd64,
1869 &sk_cookie, 1);
1870 fd = fd64;
1871 err = bpf_map_update_elem(map_fd, &index3, &fd, BPF_NOEXIST);
1872 CHECK(err < 0, "reuseport array update 32 bit fd",
1873 "err:%d errno:%d\n", err, errno);
1874 err = bpf_map_lookup_elem(map_fd, &index3, &map_cookie);
1875 CHECK(err >= 0 || errno != ENOSPC,
1876 "reuseport array lookup 32 bit fd",
1877 "err:%d errno:%d\n", err, errno);
1878 close(fd);
1879 close(map_fd);
1880}
1881
1882static void run_all_tests(void)
1883{
1884 test_hashmap(0, NULL);
1885 test_hashmap_percpu(0, NULL);
1886 test_hashmap_walk(0, NULL);
1887 test_hashmap_zero_seed();
1888
1889 test_arraymap(0, NULL);
1890 test_arraymap_percpu(0, NULL);
1891
1892 test_arraymap_percpu_many_keys();
1893
1894 test_devmap(0, NULL);
1895 test_devmap_hash(0, NULL);
1896 test_sockmap(0, NULL);
1897
1898 test_map_large();
1899 test_map_parallel();
1900 test_map_stress();
1901
1902 test_map_rdonly();
1903 test_map_wronly();
1904
1905 test_reuseport_array();
1906
1907 test_queuemap(0, NULL);
1908 test_stackmap(0, NULL);
1909
1910 test_map_in_map();
1911}
1912
1913#define DEFINE_TEST(name) extern void test_##name(void);
1914#include <map_tests/tests.h>
1915#undef DEFINE_TEST
1916
1917int main(void)
1918{
1919 srand(time(NULL));
1920
1921 libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
1922
1923 map_opts.map_flags = 0;
1924 run_all_tests();
1925
1926 map_opts.map_flags = BPF_F_NO_PREALLOC;
1927 run_all_tests();
1928
1929#define DEFINE_TEST(name) test_##name();
1930#include <map_tests/tests.h>
1931#undef DEFINE_TEST
1932
1933 printf("test_maps: OK, %d SKIPPED\n", skips);
1934 return 0;
1935}