service: use id in unregister
[dpdk.git] / test / test / test_service_cores.c
1 /*-
2  *   BSD LICENSE
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31  */
32
33 #include <rte_common.h>
34 #include <rte_hexdump.h>
35 #include <rte_mbuf.h>
36 #include <rte_malloc.h>
37 #include <rte_memcpy.h>
38 #include <rte_cycles.h>
39
40 #include <rte_service.h>
41 #include <rte_service_component.h>
42
43 #include "test.h"
44
45 /* used as the service core ID */
46 static uint32_t slcore_id;
47 /* used as timestamp to detect if a service core is running */
48 static uint64_t service_tick;
49 /* used as a flag to check if a function was run */
50 static uint32_t service_remote_launch_flag;
51
52 #define SERVICE_DELAY 1
53
54 #define DUMMY_SERVICE_NAME "dummy_service"
55 #define MT_SAFE_SERVICE_NAME "mt_safe_service"
56
57 static int
58 testsuite_setup(void)
59 {
60         slcore_id = rte_get_next_lcore(/* start core */ -1,
61                                        /* skip master */ 1,
62                                        /* wrap */ 0);
63
64         return TEST_SUCCESS;
65 }
66
67 static void
68 testsuite_teardown(void)
69 {
70         /* release service cores? */
71 }
72
73 static int32_t dummy_cb(void *args)
74 {
75         RTE_SET_USED(args);
76         service_tick++;
77         rte_delay_ms(SERVICE_DELAY);
78         return 0;
79 }
80
81 static int32_t dummy_mt_unsafe_cb(void *args)
82 {
83         /* before running test, the initialization has set pass_test to 1.
84          * If the cmpset in service-cores is working correctly, the code here
85          * should never fail to take the lock. If the lock *is* taken, fail the
86          * test, because two threads are concurrently in a non-MT safe callback.
87          */
88         uint32_t *test_params = args;
89         uint32_t *atomic_lock = &test_params[0];
90         uint32_t *pass_test = &test_params[1];
91         int lock_taken = rte_atomic32_cmpset(atomic_lock, 0, 1);
92         if (lock_taken) {
93                 /* delay with the lock held */
94                 rte_delay_ms(250);
95                 rte_atomic32_clear((rte_atomic32_t *)atomic_lock);
96         } else {
97                 /* 2nd thread will fail to take lock, so set pass flag */
98                 *pass_test = 0;
99         }
100
101         return 0;
102 }
103
104
105 static int32_t dummy_mt_safe_cb(void *args)
106 {
107         /* Atomic checks to ensure MT safe services allow > 1 thread to
108          * concurrently run the callback. The concept is as follows;
109          * 1) if lock is available, take the lock then delay
110          * 2) if first lock is taken, and a thread arrives in the CB, we know
111          *    that 2 threads are running the callback at the same time: MT safe
112          */
113         uint32_t *test_params = args;
114         uint32_t *atomic_lock = &test_params[0];
115         uint32_t *pass_test = &test_params[1];
116         int lock_taken = rte_atomic32_cmpset(atomic_lock, 0, 1);
117         if (lock_taken) {
118                 /* delay with the lock held */
119                 rte_delay_ms(250);
120                 rte_atomic32_clear((rte_atomic32_t *)atomic_lock);
121         } else {
122                 /* 2nd thread will fail to take lock, so set pass flag */
123                 *pass_test = 1;
124         }
125
126         return 0;
127 }
128
129 /* unregister all services */
130 static int
131 unregister_all(void)
132 {
133         uint32_t i;
134
135         TEST_ASSERT_EQUAL(-EINVAL, rte_service_component_unregister(1000),
136                         "Unregistered invalid service id");
137
138         uint32_t c = rte_service_get_count();
139         for (i = 0; i < c; i++) {
140                 TEST_ASSERT_EQUAL(0, rte_service_component_unregister(i),
141                                 "Error unregistering a valid service");
142         }
143
144         rte_service_lcore_reset_all();
145
146         return TEST_SUCCESS;
147 }
148
149 /* register a single dummy service */
150 static int
151 dummy_register(void)
152 {
153         /* make sure there are no remains from previous tests */
154         unregister_all();
155
156         struct rte_service_spec service;
157         memset(&service, 0, sizeof(struct rte_service_spec));
158
159         TEST_ASSERT_EQUAL(-EINVAL,
160                         rte_service_component_register(&service, NULL),
161                         "Invalid callback");
162         service.callback = dummy_cb;
163
164         TEST_ASSERT_EQUAL(-EINVAL,
165                         rte_service_component_register(&service, NULL),
166                         "Invalid name");
167         snprintf(service.name, sizeof(service.name), DUMMY_SERVICE_NAME);
168
169         TEST_ASSERT_EQUAL(0, rte_service_component_register(&service, NULL),
170                         "Failed to register valid service");
171
172         return TEST_SUCCESS;
173 }
174
175 /* verify get_by_name() service lookup */
176 static int
177 service_get_by_name(void)
178 {
179         unregister_all();
180
181         /* ensure with no services registered returns NULL */
182         TEST_ASSERT_EQUAL(0, rte_service_get_by_name(DUMMY_SERVICE_NAME),
183                         "Service get by name should return NULL");
184
185         /* register service */
186         struct rte_service_spec service;
187         memset(&service, 0, sizeof(struct rte_service_spec));
188         TEST_ASSERT_EQUAL(-EINVAL,
189                         rte_service_component_register(&service, NULL),
190                         "Invalid callback");
191         service.callback = dummy_cb;
192         TEST_ASSERT_EQUAL(-EINVAL,
193                         rte_service_component_register(&service, NULL),
194                         "Invalid name");
195         snprintf(service.name, sizeof(service.name), DUMMY_SERVICE_NAME);
196         TEST_ASSERT_EQUAL(0, rte_service_component_register(&service, NULL),
197                         "Failed to register valid service");
198
199         /* ensure with dummy services registered returns same ptr as ID */
200         struct rte_service_spec *s_by_id = rte_service_get_by_id(0);
201         TEST_ASSERT_EQUAL(s_by_id, rte_service_get_by_name(DUMMY_SERVICE_NAME),
202                         "Service get_by_name should equal get_by_id()");
203
204         unregister_all();
205
206         /* ensure after unregister, get_by_name returns NULL */
207         TEST_ASSERT_EQUAL(0, rte_service_get_by_name(DUMMY_SERVICE_NAME),
208                         "get by name should return NULL after unregister");
209
210         return TEST_SUCCESS;
211 }
212
213 /* verify probe of capabilities */
214 static int
215 service_probe_capability(void)
216 {
217         unregister_all();
218
219         struct rte_service_spec service;
220         memset(&service, 0, sizeof(struct rte_service_spec));
221         service.callback = dummy_cb;
222         snprintf(service.name, sizeof(service.name), DUMMY_SERVICE_NAME);
223         service.capabilities |= RTE_SERVICE_CAP_MT_SAFE;
224         TEST_ASSERT_EQUAL(0, rte_service_component_register(&service, NULL),
225                         "Register of MT SAFE service failed");
226
227         /* verify flag is enabled */
228         const uint32_t sid = 0;
229         int32_t mt = rte_service_probe_capability(sid, RTE_SERVICE_CAP_MT_SAFE);
230         TEST_ASSERT_EQUAL(1, mt, "MT SAFE capability flag not set.");
231
232
233         unregister_all();
234
235         memset(&service, 0, sizeof(struct rte_service_spec));
236         service.callback = dummy_cb;
237         snprintf(service.name, sizeof(service.name), DUMMY_SERVICE_NAME);
238         TEST_ASSERT_EQUAL(0, rte_service_component_register(&service, NULL),
239                         "Register of non-MT safe service failed");
240
241         /* verify flag is enabled */
242         mt = rte_service_probe_capability(sid, RTE_SERVICE_CAP_MT_SAFE);
243         TEST_ASSERT_EQUAL(0, mt, "MT SAFE cap flag set on non MT SAFE service");
244
245         return unregister_all();
246 }
247
248 /* verify the service name */
249 static int
250 service_name(void)
251 {
252         struct rte_service_spec *service = rte_service_get_by_id(0);
253
254         int equal = strcmp(service->name, DUMMY_SERVICE_NAME);
255         TEST_ASSERT_EQUAL(0, equal, "Error: Service name not correct");
256
257         return unregister_all();
258 }
259
260 /* verify service dump */
261 static int
262 service_dump(void)
263 {
264         const uint32_t sid = 0;
265         rte_service_set_stats_enable(sid, 1);
266         rte_service_dump(stdout, 0);
267         rte_service_set_stats_enable(sid, 0);
268         rte_service_dump(stdout, 0);
269         return unregister_all();
270 }
271
272 /* start and stop a service */
273 static int
274 service_start_stop(void)
275 {
276         const uint32_t sid = 0;
277
278         /* runstate_get() returns if service is running and slcore is mapped */
279         TEST_ASSERT_EQUAL(0, rte_service_lcore_add(slcore_id),
280                         "Service core add did not return zero");
281         int ret = rte_service_map_lcore_set(sid, slcore_id, 1);
282         TEST_ASSERT_EQUAL(0, ret,
283                         "Enabling service core, expected 0 got %d", ret);
284
285         TEST_ASSERT_EQUAL(0, rte_service_runstate_get(sid),
286                         "Error: Service should be stopped");
287
288         TEST_ASSERT_EQUAL(0, rte_service_runstate_set(sid, 0),
289                         "Error: Service stopped returned non-zero");
290
291         TEST_ASSERT_EQUAL(0, rte_service_runstate_get(sid),
292                         "Error: Service is running - should be stopped");
293
294         TEST_ASSERT_EQUAL(0, rte_service_runstate_set(sid, 1),
295                         "Error: Service start returned non-zero");
296
297         TEST_ASSERT_EQUAL(1, rte_service_runstate_get(sid),
298                         "Error: Service is not running");
299
300         return unregister_all();
301 }
302
303
304 static int
305 service_remote_launch_func(void *arg)
306 {
307         RTE_SET_USED(arg);
308         service_remote_launch_flag = 1;
309         return 0;
310 }
311
312 /* enable and disable a lcore for a service */
313 static int
314 service_lcore_en_dis_able(void)
315 {
316         const uint32_t sid = 0;
317
318         /* expected failure cases */
319         TEST_ASSERT_EQUAL(-EINVAL, rte_service_map_lcore_set(sid, 100000, 1),
320                         "Enable on invalid core did not fail");
321         TEST_ASSERT_EQUAL(-EINVAL, rte_service_map_lcore_set(sid, 100000, 0),
322                         "Disable on invalid core did not fail");
323
324         /* add service core to allow enabling */
325         TEST_ASSERT_EQUAL(0, rte_service_lcore_add(slcore_id),
326                         "Add service core failed when not in use before");
327
328         /* valid enable */
329         TEST_ASSERT_EQUAL(0, rte_service_map_lcore_set(sid, slcore_id, 1),
330                         "Enabling valid service and core failed");
331         TEST_ASSERT_EQUAL(1, rte_service_map_lcore_get(sid, slcore_id),
332                         "Enabled core returned not-enabled");
333
334         /* valid disable */
335         TEST_ASSERT_EQUAL(0, rte_service_map_lcore_set(sid, slcore_id, 0),
336                         "Disabling valid service and lcore failed");
337         TEST_ASSERT_EQUAL(0, rte_service_map_lcore_get(sid, slcore_id),
338                         "Disabled core returned enabled");
339
340         /* call remote_launch to verify that app can launch ex-service lcore */
341         service_remote_launch_flag = 0;
342         int ret = rte_eal_remote_launch(service_remote_launch_func, NULL,
343                                         slcore_id);
344         TEST_ASSERT_EQUAL(0, ret, "Ex-service core remote launch failed.");
345         rte_eal_mp_wait_lcore();
346         TEST_ASSERT_EQUAL(1, service_remote_launch_flag,
347                         "Ex-service core function call had no effect.");
348
349         return unregister_all();
350 }
351
352 static int
353 service_lcore_running_check(void)
354 {
355         uint64_t tick = service_tick;
356         rte_delay_ms(SERVICE_DELAY * 10);
357         /* if (tick != service_tick) we know the lcore as polled the service */
358         return tick != service_tick;
359 }
360
361 static int
362 service_lcore_add_del(void)
363 {
364         /* check initial count */
365         TEST_ASSERT_EQUAL(0, rte_service_lcore_count(),
366                         "Service lcore count has value before adding a lcore");
367
368         /* check service lcore add */
369         TEST_ASSERT_EQUAL(0, rte_service_lcore_add(slcore_id),
370                         "Add service core failed when not in use before");
371         TEST_ASSERT_EQUAL(-EALREADY, rte_service_lcore_add(slcore_id),
372                         "Add service core failed to refuse in-use lcore");
373
374         /* check count */
375         TEST_ASSERT_EQUAL(1, rte_service_lcore_count(),
376                         "Service core count not equal to one");
377
378         /* retrieve core list, checking lcore ids */
379         const uint32_t size = 4;
380         uint32_t service_core_ids[size];
381         int32_t n = rte_service_lcore_list(service_core_ids, size);
382         TEST_ASSERT_EQUAL(1, n, "Service core list return should equal 1");
383         TEST_ASSERT_EQUAL(slcore_id, service_core_ids[0],
384                                 "Service core list lcore must equal slcore_id");
385
386         /* recheck count, add more cores, and check count */
387         TEST_ASSERT_EQUAL(1, rte_service_lcore_count(),
388                         "Service core count not equal to one");
389         uint32_t slcore_1 = rte_get_next_lcore(/* start core */ -1,
390                                                /* skip master */ 1,
391                                                /* wrap */ 0);
392         TEST_ASSERT_EQUAL(0, rte_service_lcore_add(slcore_1),
393                         "Service core add did not return zero");
394         uint32_t slcore_2 = rte_get_next_lcore(/* start core */ slcore_1,
395                                                /* skip master */ 1,
396                                                /* wrap */ 0);
397         TEST_ASSERT_EQUAL(0, rte_service_lcore_add(slcore_2),
398                         "Service core add did not return zero");
399
400         uint32_t count = rte_service_lcore_count();
401         const uint32_t cores_at_this_point = 3;
402         TEST_ASSERT_EQUAL(cores_at_this_point, count,
403                         "Service core count %d, expected %d", count,
404                         cores_at_this_point);
405
406         /* check longer service core list */
407         n = rte_service_lcore_list(service_core_ids, size);
408         TEST_ASSERT_EQUAL(3, n, "Service core list return should equal 3");
409         TEST_ASSERT_EQUAL(slcore_id, service_core_ids[0],
410                                 "Service core list[0] lcore must equal 1");
411         TEST_ASSERT_EQUAL(slcore_1, service_core_ids[1],
412                                 "Service core list[1] lcore must equal 2");
413         TEST_ASSERT_EQUAL(slcore_2, service_core_ids[2],
414                                 "Service core list[2] lcore must equal 3");
415
416         /* recheck count, remove lcores, check remaining lcore_id is correct */
417         TEST_ASSERT_EQUAL(3, rte_service_lcore_count(),
418                         "Service core count not equal to three");
419         TEST_ASSERT_EQUAL(0, rte_service_lcore_del(slcore_1),
420                         "Service core add did not return zero");
421         TEST_ASSERT_EQUAL(0, rte_service_lcore_del(slcore_2),
422                         "Service core add did not return zero");
423         TEST_ASSERT_EQUAL(1, rte_service_lcore_count(),
424                         "Service core count not equal to one");
425         n = rte_service_lcore_list(service_core_ids, size);
426         TEST_ASSERT_EQUAL(1, n, "Service core list return should equal one");
427         TEST_ASSERT_EQUAL(slcore_id, service_core_ids[0],
428                                 "Service core list[0] lcore must equal %d",
429                                 slcore_id);
430
431         return unregister_all();
432 }
433
434 static int
435 service_threaded_test(int mt_safe)
436 {
437         unregister_all();
438
439         /* add next 2 cores */
440         uint32_t slcore_1 = rte_get_next_lcore(/* start core */ -1,
441                                                /* skip master */ 1,
442                                                /* wrap */ 0);
443         TEST_ASSERT_EQUAL(0, rte_service_lcore_add(slcore_1),
444                         "mt safe lcore add fail");
445         uint32_t slcore_2 = rte_get_next_lcore(/* start core */ slcore_1,
446                                                /* skip master */ 1,
447                                                /* wrap */ 0);
448         TEST_ASSERT_EQUAL(0, rte_service_lcore_add(slcore_2),
449                         "mt safe lcore add fail");
450
451         /* Use atomic locks to verify that two threads are in the same function
452          * at the same time. These are passed to the unit tests through the
453          * callback userdata parameter
454          */
455         uint32_t test_params[2];
456         memset(test_params, 0, sizeof(uint32_t) * 2);
457
458         /* register MT safe service. */
459         struct rte_service_spec service;
460         memset(&service, 0, sizeof(struct rte_service_spec));
461         service.callback_userdata = test_params;
462         snprintf(service.name, sizeof(service.name), MT_SAFE_SERVICE_NAME);
463
464         if (mt_safe) {
465                 service.callback = dummy_mt_safe_cb;
466                 service.capabilities |= RTE_SERVICE_CAP_MT_SAFE;
467         } else {
468                 /* initialize to pass, see callback comment for details */
469                 test_params[1] = 1;
470                 service.callback = dummy_mt_unsafe_cb;
471         }
472
473         TEST_ASSERT_EQUAL(0, rte_service_component_register(&service, NULL),
474                         "Register of MT SAFE service failed");
475
476         const uint32_t sid = 0;
477         TEST_ASSERT_EQUAL(0, rte_service_runstate_set(sid, 1),
478                         "Starting valid service failed");
479         TEST_ASSERT_EQUAL(0, rte_service_map_lcore_set(sid, slcore_1, 1),
480                         "Failed to enable lcore 1 on mt safe service");
481         TEST_ASSERT_EQUAL(0, rte_service_map_lcore_set(sid, slcore_2, 1),
482                         "Failed to enable lcore 2 on mt safe service");
483         rte_service_lcore_start(slcore_1);
484         rte_service_lcore_start(slcore_2);
485
486         /* wait for the worker threads to run */
487         rte_delay_ms(500);
488         rte_service_lcore_stop(slcore_1);
489         rte_service_lcore_stop(slcore_2);
490
491         TEST_ASSERT_EQUAL(1, test_params[1],
492                         "MT Safe service not run by two cores concurrently");
493
494         TEST_ASSERT_EQUAL(0, rte_service_runstate_set(sid, 0),
495                         "Failed to stop MT Safe service");
496
497         unregister_all();
498
499         /* return the value of the callback pass_test variable to caller */
500         return test_params[1];
501 }
502
503 /* tests an MT SAFE service with two cores. The callback function ensures that
504  * two threads access the callback concurrently.
505  */
506 static int
507 service_mt_safe_poll(void)
508 {
509         int mt_safe = 1;
510         TEST_ASSERT_EQUAL(1, service_threaded_test(mt_safe),
511                         "Error: MT Safe service not run by two cores concurrently");
512         return TEST_SUCCESS;
513 }
514
515 /* tests a NON mt safe service with two cores, the callback is serialized
516  * using the atomic cmpset.
517  */
518 static int
519 service_mt_unsafe_poll(void)
520 {
521         int mt_safe = 0;
522         TEST_ASSERT_EQUAL(1, service_threaded_test(mt_safe),
523                         "Error: NON MT Safe service run by two cores concurrently");
524         return TEST_SUCCESS;
525 }
526
527 /* start and stop a service core - ensuring it goes back to sleep */
528 static int
529 service_lcore_start_stop(void)
530 {
531         /* start service core and service, create mapping so tick() runs */
532         const uint32_t sid = 0;
533         TEST_ASSERT_EQUAL(0, rte_service_runstate_set(sid, 1),
534                         "Starting valid service failed");
535         TEST_ASSERT_EQUAL(-EINVAL, rte_service_map_lcore_set(sid, slcore_id, 1),
536                         "Enabling valid service on non-service core must fail");
537
538         /* core start */
539         TEST_ASSERT_EQUAL(-EINVAL, rte_service_lcore_start(slcore_id),
540                         "Service core start without add should return EINVAL");
541         TEST_ASSERT_EQUAL(0, rte_service_lcore_add(slcore_id),
542                         "Service core add did not return zero");
543         TEST_ASSERT_EQUAL(0, rte_service_map_lcore_set(sid, slcore_id, 1),
544                         "Enabling valid service on valid core failed");
545         TEST_ASSERT_EQUAL(0, rte_service_lcore_start(slcore_id),
546                         "Service core start after add failed");
547         TEST_ASSERT_EQUAL(-EALREADY, rte_service_lcore_start(slcore_id),
548                         "Service core expected as running but was stopped");
549
550         /* ensures core really is running the service function */
551         TEST_ASSERT_EQUAL(1, service_lcore_running_check(),
552                         "Service core expected to poll service but it didn't");
553
554         /* core stop */
555         TEST_ASSERT_EQUAL(-EINVAL, rte_service_lcore_stop(100000),
556                         "Invalid Service core stop should return -EINVAL");
557         TEST_ASSERT_EQUAL(0, rte_service_lcore_stop(slcore_id),
558                         "Service core stop expected to return 0");
559         TEST_ASSERT_EQUAL(-EALREADY, rte_service_lcore_stop(slcore_id),
560                         "Already stopped service core should return -EALREADY");
561
562         /* ensure service is not longer running */
563         TEST_ASSERT_EQUAL(0, service_lcore_running_check(),
564                         "Service core expected to poll service but it didn't");
565
566         TEST_ASSERT_EQUAL(0, rte_service_lcore_del(slcore_id),
567                         "Service core del did not return zero");
568
569         return unregister_all();
570 }
571
572 static struct unit_test_suite service_tests  = {
573         .suite_name = "service core test suite",
574         .setup = testsuite_setup,
575         .teardown = testsuite_teardown,
576         .unit_test_cases = {
577                 TEST_CASE_ST(dummy_register, NULL, unregister_all),
578                 TEST_CASE_ST(dummy_register, NULL, service_name),
579                 TEST_CASE_ST(dummy_register, NULL, service_get_by_name),
580                 TEST_CASE_ST(dummy_register, NULL, service_dump),
581                 TEST_CASE_ST(dummy_register, NULL, service_probe_capability),
582                 TEST_CASE_ST(dummy_register, NULL, service_start_stop),
583                 TEST_CASE_ST(dummy_register, NULL, service_lcore_add_del),
584                 TEST_CASE_ST(dummy_register, NULL, service_lcore_start_stop),
585                 TEST_CASE_ST(dummy_register, NULL, service_lcore_en_dis_able),
586                 TEST_CASE_ST(dummy_register, NULL, service_mt_unsafe_poll),
587                 TEST_CASE_ST(dummy_register, NULL, service_mt_safe_poll),
588                 TEST_CASES_END() /**< NULL terminate unit test array */
589         }
590 };
591
592 static int
593 test_service_common(void)
594 {
595         return unit_test_suite_runner(&service_tests);
596 }
597
598 REGISTER_TEST_COMMAND(service_autotest, test_service_common);