1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19 *
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2012, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 *
36 * lnet/selftest/framework.c
37 *
38 * Author: Isaac Huang <isaac@clusterfs.com>
39 * Author: Liang Zhen <liangzhen@clusterfs.com>
40 */
41
42 #define DEBUG_SUBSYSTEM S_LNET
43
44 #include "selftest.h"
45
46 lst_sid_t LST_INVALID_SID = {LNET_NID_ANY, -1};
47
48 static int session_timeout = 100;
49 module_param(session_timeout, int, 0444);
50 MODULE_PARM_DESC(session_timeout, "test session timeout in seconds (100 by default, 0 == never)");
51
52 static int rpc_timeout = 64;
53 module_param(rpc_timeout, int, 0644);
54 MODULE_PARM_DESC(rpc_timeout, "rpc timeout in seconds (64 by default, 0 == never)");
55
56 #define sfw_unpack_id(id) \
57 do { \
58 __swab64s(&(id).nid); \
59 __swab32s(&(id).pid); \
60 } while (0)
61
62 #define sfw_unpack_sid(sid) \
63 do { \
64 __swab64s(&(sid).ses_nid); \
65 __swab64s(&(sid).ses_stamp); \
66 } while (0)
67
68 #define sfw_unpack_fw_counters(fc) \
69 do { \
70 __swab32s(&(fc).running_ms); \
71 __swab32s(&(fc).active_batches); \
72 __swab32s(&(fc).zombie_sessions); \
73 __swab32s(&(fc).brw_errors); \
74 __swab32s(&(fc).ping_errors); \
75 } while (0)
76
77 #define sfw_unpack_rpc_counters(rc) \
78 do { \
79 __swab32s(&(rc).errors); \
80 __swab32s(&(rc).rpcs_sent); \
81 __swab32s(&(rc).rpcs_rcvd); \
82 __swab32s(&(rc).rpcs_dropped); \
83 __swab32s(&(rc).rpcs_expired); \
84 __swab64s(&(rc).bulk_get); \
85 __swab64s(&(rc).bulk_put); \
86 } while (0)
87
88 #define sfw_unpack_lnet_counters(lc) \
89 do { \
90 __swab32s(&(lc).errors); \
91 __swab32s(&(lc).msgs_max); \
92 __swab32s(&(lc).msgs_alloc); \
93 __swab32s(&(lc).send_count); \
94 __swab32s(&(lc).recv_count); \
95 __swab32s(&(lc).drop_count); \
96 __swab32s(&(lc).route_count); \
97 __swab64s(&(lc).send_length); \
98 __swab64s(&(lc).recv_length); \
99 __swab64s(&(lc).drop_length); \
100 __swab64s(&(lc).route_length); \
101 } while (0)
102
103 #define sfw_test_active(t) (atomic_read(&(t)->tsi_nactive) != 0)
104 #define sfw_batch_active(b) (atomic_read(&(b)->bat_nactive) != 0)
105
106 static struct smoketest_framework {
107 struct list_head fw_zombie_rpcs; /* RPCs to be recycled */
108 struct list_head fw_zombie_sessions; /* stopping sessions */
109 struct list_head fw_tests; /* registered test cases */
110 atomic_t fw_nzombies; /* # zombie sessions */
111 spinlock_t fw_lock; /* serialise */
112 sfw_session_t *fw_session; /* _the_ session */
113 int fw_shuttingdown; /* shutdown in progress */
114 srpc_server_rpc_t *fw_active_srpc; /* running RPC */
115 } sfw_data;
116
117 /* forward ref's */
118 int sfw_stop_batch(sfw_batch_t *tsb, int force);
119 void sfw_destroy_session(sfw_session_t *sn);
120
121 static inline sfw_test_case_t *
sfw_find_test_case(int id)122 sfw_find_test_case(int id)
123 {
124 sfw_test_case_t *tsc;
125
126 LASSERT(id <= SRPC_SERVICE_MAX_ID);
127 LASSERT(id > SRPC_FRAMEWORK_SERVICE_MAX_ID);
128
129 list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
130 if (tsc->tsc_srv_service->sv_id == id)
131 return tsc;
132 }
133
134 return NULL;
135 }
136
137 static int
sfw_register_test(srpc_service_t * service,sfw_test_client_ops_t * cliops)138 sfw_register_test(srpc_service_t *service, sfw_test_client_ops_t *cliops)
139 {
140 sfw_test_case_t *tsc;
141
142 if (sfw_find_test_case(service->sv_id) != NULL) {
143 CERROR("Failed to register test %s (%d)\n",
144 service->sv_name, service->sv_id);
145 return -EEXIST;
146 }
147
148 LIBCFS_ALLOC(tsc, sizeof(sfw_test_case_t));
149 if (tsc == NULL)
150 return -ENOMEM;
151
152 tsc->tsc_cli_ops = cliops;
153 tsc->tsc_srv_service = service;
154
155 list_add_tail(&tsc->tsc_list, &sfw_data.fw_tests);
156 return 0;
157 }
158
159 static void
sfw_add_session_timer(void)160 sfw_add_session_timer(void)
161 {
162 sfw_session_t *sn = sfw_data.fw_session;
163 stt_timer_t *timer = &sn->sn_timer;
164
165 LASSERT(!sfw_data.fw_shuttingdown);
166
167 if (sn == NULL || sn->sn_timeout == 0)
168 return;
169
170 LASSERT(!sn->sn_timer_active);
171
172 sn->sn_timer_active = 1;
173 timer->stt_expires = ktime_get_real_seconds() + sn->sn_timeout;
174 stt_add_timer(timer);
175 return;
176 }
177
178 static int
sfw_del_session_timer(void)179 sfw_del_session_timer(void)
180 {
181 sfw_session_t *sn = sfw_data.fw_session;
182
183 if (sn == NULL || !sn->sn_timer_active)
184 return 0;
185
186 LASSERT(sn->sn_timeout != 0);
187
188 if (stt_del_timer(&sn->sn_timer)) { /* timer defused */
189 sn->sn_timer_active = 0;
190 return 0;
191 }
192
193 return EBUSY; /* racing with sfw_session_expired() */
194 }
195
196 static void
sfw_deactivate_session(void)197 sfw_deactivate_session(void)
198 __must_hold(&sfw_data.fw_lock)
199 {
200 sfw_session_t *sn = sfw_data.fw_session;
201 int nactive = 0;
202 sfw_batch_t *tsb;
203 sfw_test_case_t *tsc;
204
205 if (sn == NULL)
206 return;
207
208 LASSERT(!sn->sn_timer_active);
209
210 sfw_data.fw_session = NULL;
211 atomic_inc(&sfw_data.fw_nzombies);
212 list_add(&sn->sn_list, &sfw_data.fw_zombie_sessions);
213
214 spin_unlock(&sfw_data.fw_lock);
215
216 list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
217 srpc_abort_service(tsc->tsc_srv_service);
218 }
219
220 spin_lock(&sfw_data.fw_lock);
221
222 list_for_each_entry(tsb, &sn->sn_batches, bat_list) {
223 if (sfw_batch_active(tsb)) {
224 nactive++;
225 sfw_stop_batch(tsb, 1);
226 }
227 }
228
229 if (nactive != 0)
230 return; /* wait for active batches to stop */
231
232 list_del_init(&sn->sn_list);
233 spin_unlock(&sfw_data.fw_lock);
234
235 sfw_destroy_session(sn);
236
237 spin_lock(&sfw_data.fw_lock);
238 }
239
240 static void
sfw_session_expired(void * data)241 sfw_session_expired(void *data)
242 {
243 sfw_session_t *sn = data;
244
245 spin_lock(&sfw_data.fw_lock);
246
247 LASSERT(sn->sn_timer_active);
248 LASSERT(sn == sfw_data.fw_session);
249
250 CWARN("Session expired! sid: %s-%llu, name: %s\n",
251 libcfs_nid2str(sn->sn_id.ses_nid),
252 sn->sn_id.ses_stamp, &sn->sn_name[0]);
253
254 sn->sn_timer_active = 0;
255 sfw_deactivate_session();
256
257 spin_unlock(&sfw_data.fw_lock);
258 }
259
260 static inline void
sfw_init_session(sfw_session_t * sn,lst_sid_t sid,unsigned features,const char * name)261 sfw_init_session(sfw_session_t *sn, lst_sid_t sid,
262 unsigned features, const char *name)
263 {
264 stt_timer_t *timer = &sn->sn_timer;
265
266 memset(sn, 0, sizeof(sfw_session_t));
267 INIT_LIST_HEAD(&sn->sn_list);
268 INIT_LIST_HEAD(&sn->sn_batches);
269 atomic_set(&sn->sn_refcount, 1); /* +1 for caller */
270 atomic_set(&sn->sn_brw_errors, 0);
271 atomic_set(&sn->sn_ping_errors, 0);
272 strlcpy(&sn->sn_name[0], name, sizeof(sn->sn_name));
273
274 sn->sn_timer_active = 0;
275 sn->sn_id = sid;
276 sn->sn_features = features;
277 sn->sn_timeout = session_timeout;
278 sn->sn_started = cfs_time_current();
279
280 timer->stt_data = sn;
281 timer->stt_func = sfw_session_expired;
282 INIT_LIST_HEAD(&timer->stt_list);
283 }
284
285 /* completion handler for incoming framework RPCs */
286 static void
sfw_server_rpc_done(struct srpc_server_rpc * rpc)287 sfw_server_rpc_done(struct srpc_server_rpc *rpc)
288 {
289 struct srpc_service *sv = rpc->srpc_scd->scd_svc;
290 int status = rpc->srpc_status;
291
292 CDEBUG(D_NET,
293 "Incoming framework RPC done: service %s, peer %s, status %s:%d\n",
294 sv->sv_name, libcfs_id2str(rpc->srpc_peer),
295 swi_state2str(rpc->srpc_wi.swi_state),
296 status);
297
298 if (rpc->srpc_bulk != NULL)
299 sfw_free_pages(rpc);
300 return;
301 }
302
303 static void
sfw_client_rpc_fini(srpc_client_rpc_t * rpc)304 sfw_client_rpc_fini(srpc_client_rpc_t *rpc)
305 {
306 LASSERT(rpc->crpc_bulk.bk_niov == 0);
307 LASSERT(list_empty(&rpc->crpc_list));
308 LASSERT(atomic_read(&rpc->crpc_refcount) == 0);
309
310 CDEBUG(D_NET,
311 "Outgoing framework RPC done: service %d, peer %s, status %s:%d:%d\n",
312 rpc->crpc_service, libcfs_id2str(rpc->crpc_dest),
313 swi_state2str(rpc->crpc_wi.swi_state),
314 rpc->crpc_aborted, rpc->crpc_status);
315
316 spin_lock(&sfw_data.fw_lock);
317
318 /* my callers must finish all RPCs before shutting me down */
319 LASSERT(!sfw_data.fw_shuttingdown);
320 list_add(&rpc->crpc_list, &sfw_data.fw_zombie_rpcs);
321
322 spin_unlock(&sfw_data.fw_lock);
323 }
324
325 static sfw_batch_t *
sfw_find_batch(lst_bid_t bid)326 sfw_find_batch(lst_bid_t bid)
327 {
328 sfw_session_t *sn = sfw_data.fw_session;
329 sfw_batch_t *bat;
330
331 LASSERT(sn != NULL);
332
333 list_for_each_entry(bat, &sn->sn_batches, bat_list) {
334 if (bat->bat_id.bat_id == bid.bat_id)
335 return bat;
336 }
337
338 return NULL;
339 }
340
341 static sfw_batch_t *
sfw_bid2batch(lst_bid_t bid)342 sfw_bid2batch(lst_bid_t bid)
343 {
344 sfw_session_t *sn = sfw_data.fw_session;
345 sfw_batch_t *bat;
346
347 LASSERT(sn != NULL);
348
349 bat = sfw_find_batch(bid);
350 if (bat != NULL)
351 return bat;
352
353 LIBCFS_ALLOC(bat, sizeof(sfw_batch_t));
354 if (bat == NULL)
355 return NULL;
356
357 bat->bat_error = 0;
358 bat->bat_session = sn;
359 bat->bat_id = bid;
360 atomic_set(&bat->bat_nactive, 0);
361 INIT_LIST_HEAD(&bat->bat_tests);
362
363 list_add_tail(&bat->bat_list, &sn->sn_batches);
364 return bat;
365 }
366
367 static int
sfw_get_stats(srpc_stat_reqst_t * request,srpc_stat_reply_t * reply)368 sfw_get_stats(srpc_stat_reqst_t *request, srpc_stat_reply_t *reply)
369 {
370 sfw_session_t *sn = sfw_data.fw_session;
371 sfw_counters_t *cnt = &reply->str_fw;
372 sfw_batch_t *bat;
373
374 reply->str_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
375
376 if (request->str_sid.ses_nid == LNET_NID_ANY) {
377 reply->str_status = EINVAL;
378 return 0;
379 }
380
381 if (sn == NULL || !sfw_sid_equal(request->str_sid, sn->sn_id)) {
382 reply->str_status = ESRCH;
383 return 0;
384 }
385
386 lnet_counters_get(&reply->str_lnet);
387 srpc_get_counters(&reply->str_rpc);
388
389 /* send over the msecs since the session was started
390 - with 32 bits to send, this is ~49 days */
391 cnt->running_ms = jiffies_to_msecs(jiffies - sn->sn_started);
392 cnt->brw_errors = atomic_read(&sn->sn_brw_errors);
393 cnt->ping_errors = atomic_read(&sn->sn_ping_errors);
394 cnt->zombie_sessions = atomic_read(&sfw_data.fw_nzombies);
395
396 cnt->active_batches = 0;
397 list_for_each_entry(bat, &sn->sn_batches, bat_list) {
398 if (atomic_read(&bat->bat_nactive) > 0)
399 cnt->active_batches++;
400 }
401
402 reply->str_status = 0;
403 return 0;
404 }
405
406 int
sfw_make_session(srpc_mksn_reqst_t * request,srpc_mksn_reply_t * reply)407 sfw_make_session(srpc_mksn_reqst_t *request, srpc_mksn_reply_t *reply)
408 {
409 sfw_session_t *sn = sfw_data.fw_session;
410 srpc_msg_t *msg = container_of(request, srpc_msg_t,
411 msg_body.mksn_reqst);
412 int cplen = 0;
413
414 if (request->mksn_sid.ses_nid == LNET_NID_ANY) {
415 reply->mksn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
416 reply->mksn_status = EINVAL;
417 return 0;
418 }
419
420 if (sn != NULL) {
421 reply->mksn_status = 0;
422 reply->mksn_sid = sn->sn_id;
423 reply->mksn_timeout = sn->sn_timeout;
424
425 if (sfw_sid_equal(request->mksn_sid, sn->sn_id)) {
426 atomic_inc(&sn->sn_refcount);
427 return 0;
428 }
429
430 if (!request->mksn_force) {
431 reply->mksn_status = EBUSY;
432 cplen = strlcpy(&reply->mksn_name[0], &sn->sn_name[0],
433 sizeof(reply->mksn_name));
434 if (cplen >= sizeof(reply->mksn_name))
435 return -E2BIG;
436 return 0;
437 }
438 }
439
440 /* reject the request if it requires unknown features
441 * NB: old version will always accept all features because it's not
442 * aware of srpc_msg_t::msg_ses_feats, it's a defect but it's also
443 * harmless because it will return zero feature to console, and it's
444 * console's responsibility to make sure all nodes in a session have
445 * same feature mask. */
446 if ((msg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
447 reply->mksn_status = EPROTO;
448 return 0;
449 }
450
451 /* brand new or create by force */
452 LIBCFS_ALLOC(sn, sizeof(sfw_session_t));
453 if (sn == NULL) {
454 CERROR("Dropping RPC (mksn) under memory pressure.\n");
455 return -ENOMEM;
456 }
457
458 sfw_init_session(sn, request->mksn_sid,
459 msg->msg_ses_feats, &request->mksn_name[0]);
460
461 spin_lock(&sfw_data.fw_lock);
462
463 sfw_deactivate_session();
464 LASSERT(sfw_data.fw_session == NULL);
465 sfw_data.fw_session = sn;
466
467 spin_unlock(&sfw_data.fw_lock);
468
469 reply->mksn_status = 0;
470 reply->mksn_sid = sn->sn_id;
471 reply->mksn_timeout = sn->sn_timeout;
472 return 0;
473 }
474
475 static int
sfw_remove_session(srpc_rmsn_reqst_t * request,srpc_rmsn_reply_t * reply)476 sfw_remove_session(srpc_rmsn_reqst_t *request, srpc_rmsn_reply_t *reply)
477 {
478 sfw_session_t *sn = sfw_data.fw_session;
479
480 reply->rmsn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
481
482 if (request->rmsn_sid.ses_nid == LNET_NID_ANY) {
483 reply->rmsn_status = EINVAL;
484 return 0;
485 }
486
487 if (sn == NULL || !sfw_sid_equal(request->rmsn_sid, sn->sn_id)) {
488 reply->rmsn_status = (sn == NULL) ? ESRCH : EBUSY;
489 return 0;
490 }
491
492 if (!atomic_dec_and_test(&sn->sn_refcount)) {
493 reply->rmsn_status = 0;
494 return 0;
495 }
496
497 spin_lock(&sfw_data.fw_lock);
498 sfw_deactivate_session();
499 spin_unlock(&sfw_data.fw_lock);
500
501 reply->rmsn_status = 0;
502 reply->rmsn_sid = LST_INVALID_SID;
503 LASSERT(sfw_data.fw_session == NULL);
504 return 0;
505 }
506
507 static int
sfw_debug_session(srpc_debug_reqst_t * request,srpc_debug_reply_t * reply)508 sfw_debug_session(srpc_debug_reqst_t *request, srpc_debug_reply_t *reply)
509 {
510 sfw_session_t *sn = sfw_data.fw_session;
511
512 if (sn == NULL) {
513 reply->dbg_status = ESRCH;
514 reply->dbg_sid = LST_INVALID_SID;
515 return 0;
516 }
517
518 reply->dbg_status = 0;
519 reply->dbg_sid = sn->sn_id;
520 reply->dbg_timeout = sn->sn_timeout;
521 if (strlcpy(reply->dbg_name, &sn->sn_name[0], sizeof(reply->dbg_name))
522 >= sizeof(reply->dbg_name))
523 return -E2BIG;
524
525 return 0;
526 }
527
528 static void
sfw_test_rpc_fini(srpc_client_rpc_t * rpc)529 sfw_test_rpc_fini(srpc_client_rpc_t *rpc)
530 {
531 sfw_test_unit_t *tsu = rpc->crpc_priv;
532 sfw_test_instance_t *tsi = tsu->tsu_instance;
533
534 /* Called with hold of tsi->tsi_lock */
535 LASSERT(list_empty(&rpc->crpc_list));
536 list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
537 }
538
539 static inline int
sfw_test_buffers(sfw_test_instance_t * tsi)540 sfw_test_buffers(sfw_test_instance_t *tsi)
541 {
542 struct sfw_test_case *tsc = sfw_find_test_case(tsi->tsi_service);
543 struct srpc_service *svc = tsc->tsc_srv_service;
544 int nbuf;
545
546 nbuf = min(svc->sv_wi_total, tsi->tsi_loop) / svc->sv_ncpts;
547 return max(SFW_TEST_WI_MIN, nbuf + SFW_TEST_WI_EXTRA);
548 }
549
550 static int
sfw_load_test(struct sfw_test_instance * tsi)551 sfw_load_test(struct sfw_test_instance *tsi)
552 {
553 struct sfw_test_case *tsc;
554 struct srpc_service *svc;
555 int nbuf;
556 int rc;
557
558 LASSERT(tsi != NULL);
559 tsc = sfw_find_test_case(tsi->tsi_service);
560 nbuf = sfw_test_buffers(tsi);
561 LASSERT(tsc != NULL);
562 svc = tsc->tsc_srv_service;
563
564 if (tsi->tsi_is_client) {
565 tsi->tsi_ops = tsc->tsc_cli_ops;
566 return 0;
567 }
568
569 rc = srpc_service_add_buffers(svc, nbuf);
570 if (rc != 0) {
571 CWARN("Failed to reserve enough buffers: service %s, %d needed: %d\n",
572 svc->sv_name, nbuf, rc);
573 /* NB: this error handler is not strictly correct, because
574 * it may release more buffers than already allocated,
575 * but it doesn't matter because request portal should
576 * be lazy portal and will grow buffers if necessary. */
577 srpc_service_remove_buffers(svc, nbuf);
578 return -ENOMEM;
579 }
580
581 CDEBUG(D_NET, "Reserved %d buffers for test %s\n",
582 nbuf * (srpc_serv_is_framework(svc) ?
583 1 : cfs_cpt_number(cfs_cpt_table)), svc->sv_name);
584 return 0;
585 }
586
587 static void
sfw_unload_test(struct sfw_test_instance * tsi)588 sfw_unload_test(struct sfw_test_instance *tsi)
589 {
590 struct sfw_test_case *tsc = sfw_find_test_case(tsi->tsi_service);
591
592 LASSERT(tsc != NULL);
593
594 if (tsi->tsi_is_client)
595 return;
596
597 /* shrink buffers, because request portal is lazy portal
598 * which can grow buffers at runtime so we may leave
599 * some buffers behind, but never mind... */
600 srpc_service_remove_buffers(tsc->tsc_srv_service,
601 sfw_test_buffers(tsi));
602 return;
603 }
604
605 static void
sfw_destroy_test_instance(sfw_test_instance_t * tsi)606 sfw_destroy_test_instance(sfw_test_instance_t *tsi)
607 {
608 srpc_client_rpc_t *rpc;
609 sfw_test_unit_t *tsu;
610
611 if (!tsi->tsi_is_client)
612 goto clean;
613
614 tsi->tsi_ops->tso_fini(tsi);
615
616 LASSERT(!tsi->tsi_stopping);
617 LASSERT(list_empty(&tsi->tsi_active_rpcs));
618 LASSERT(!sfw_test_active(tsi));
619
620 while (!list_empty(&tsi->tsi_units)) {
621 tsu = list_entry(tsi->tsi_units.next,
622 sfw_test_unit_t, tsu_list);
623 list_del(&tsu->tsu_list);
624 LIBCFS_FREE(tsu, sizeof(*tsu));
625 }
626
627 while (!list_empty(&tsi->tsi_free_rpcs)) {
628 rpc = list_entry(tsi->tsi_free_rpcs.next,
629 srpc_client_rpc_t, crpc_list);
630 list_del(&rpc->crpc_list);
631 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
632 }
633
634 clean:
635 sfw_unload_test(tsi);
636 LIBCFS_FREE(tsi, sizeof(*tsi));
637 return;
638 }
639
640 static void
sfw_destroy_batch(sfw_batch_t * tsb)641 sfw_destroy_batch(sfw_batch_t *tsb)
642 {
643 sfw_test_instance_t *tsi;
644
645 LASSERT(!sfw_batch_active(tsb));
646 LASSERT(list_empty(&tsb->bat_list));
647
648 while (!list_empty(&tsb->bat_tests)) {
649 tsi = list_entry(tsb->bat_tests.next,
650 sfw_test_instance_t, tsi_list);
651 list_del_init(&tsi->tsi_list);
652 sfw_destroy_test_instance(tsi);
653 }
654
655 LIBCFS_FREE(tsb, sizeof(sfw_batch_t));
656 return;
657 }
658
659 void
sfw_destroy_session(sfw_session_t * sn)660 sfw_destroy_session(sfw_session_t *sn)
661 {
662 sfw_batch_t *batch;
663
664 LASSERT(list_empty(&sn->sn_list));
665 LASSERT(sn != sfw_data.fw_session);
666
667 while (!list_empty(&sn->sn_batches)) {
668 batch = list_entry(sn->sn_batches.next,
669 sfw_batch_t, bat_list);
670 list_del_init(&batch->bat_list);
671 sfw_destroy_batch(batch);
672 }
673
674 LIBCFS_FREE(sn, sizeof(*sn));
675 atomic_dec(&sfw_data.fw_nzombies);
676 return;
677 }
678
679 static void
sfw_unpack_addtest_req(srpc_msg_t * msg)680 sfw_unpack_addtest_req(srpc_msg_t *msg)
681 {
682 srpc_test_reqst_t *req = &msg->msg_body.tes_reqst;
683
684 LASSERT(msg->msg_type == SRPC_MSG_TEST_REQST);
685 LASSERT(req->tsr_is_client);
686
687 if (msg->msg_magic == SRPC_MSG_MAGIC)
688 return; /* no flipping needed */
689
690 LASSERT(msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
691
692 if (req->tsr_service == SRPC_SERVICE_BRW) {
693 if ((msg->msg_ses_feats & LST_FEAT_BULK_LEN) == 0) {
694 test_bulk_req_t *bulk = &req->tsr_u.bulk_v0;
695
696 __swab32s(&bulk->blk_opc);
697 __swab32s(&bulk->blk_npg);
698 __swab32s(&bulk->blk_flags);
699
700 } else {
701 test_bulk_req_v1_t *bulk = &req->tsr_u.bulk_v1;
702
703 __swab16s(&bulk->blk_opc);
704 __swab16s(&bulk->blk_flags);
705 __swab32s(&bulk->blk_offset);
706 __swab32s(&bulk->blk_len);
707 }
708
709 return;
710 }
711
712 if (req->tsr_service == SRPC_SERVICE_PING) {
713 test_ping_req_t *ping = &req->tsr_u.ping;
714
715 __swab32s(&ping->png_size);
716 __swab32s(&ping->png_flags);
717 return;
718 }
719
720 LBUG();
721 return;
722 }
723
724 static int
sfw_add_test_instance(sfw_batch_t * tsb,srpc_server_rpc_t * rpc)725 sfw_add_test_instance(sfw_batch_t *tsb, srpc_server_rpc_t *rpc)
726 {
727 srpc_msg_t *msg = &rpc->srpc_reqstbuf->buf_msg;
728 srpc_test_reqst_t *req = &msg->msg_body.tes_reqst;
729 srpc_bulk_t *bk = rpc->srpc_bulk;
730 int ndest = req->tsr_ndest;
731 sfw_test_unit_t *tsu;
732 sfw_test_instance_t *tsi;
733 int i;
734 int rc;
735
736 LIBCFS_ALLOC(tsi, sizeof(*tsi));
737 if (tsi == NULL) {
738 CERROR("Can't allocate test instance for batch: %llu\n",
739 tsb->bat_id.bat_id);
740 return -ENOMEM;
741 }
742
743 spin_lock_init(&tsi->tsi_lock);
744 atomic_set(&tsi->tsi_nactive, 0);
745 INIT_LIST_HEAD(&tsi->tsi_units);
746 INIT_LIST_HEAD(&tsi->tsi_free_rpcs);
747 INIT_LIST_HEAD(&tsi->tsi_active_rpcs);
748
749 tsi->tsi_stopping = 0;
750 tsi->tsi_batch = tsb;
751 tsi->tsi_loop = req->tsr_loop;
752 tsi->tsi_concur = req->tsr_concur;
753 tsi->tsi_service = req->tsr_service;
754 tsi->tsi_is_client = !!(req->tsr_is_client);
755 tsi->tsi_stoptsu_onerr = !!(req->tsr_stop_onerr);
756
757 rc = sfw_load_test(tsi);
758 if (rc != 0) {
759 LIBCFS_FREE(tsi, sizeof(*tsi));
760 return rc;
761 }
762
763 LASSERT(!sfw_batch_active(tsb));
764
765 if (!tsi->tsi_is_client) {
766 /* it's test server, just add it to tsb */
767 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
768 return 0;
769 }
770
771 LASSERT(bk != NULL);
772 LASSERT(bk->bk_niov * SFW_ID_PER_PAGE >= (unsigned int)ndest);
773 LASSERT((unsigned int)bk->bk_len >=
774 sizeof(lnet_process_id_packed_t) * ndest);
775
776 sfw_unpack_addtest_req(msg);
777 memcpy(&tsi->tsi_u, &req->tsr_u, sizeof(tsi->tsi_u));
778
779 for (i = 0; i < ndest; i++) {
780 lnet_process_id_packed_t *dests;
781 lnet_process_id_packed_t id;
782 int j;
783
784 dests = page_address(bk->bk_iovs[i / SFW_ID_PER_PAGE].kiov_page);
785 LASSERT(dests != NULL); /* my pages are within KVM always */
786 id = dests[i % SFW_ID_PER_PAGE];
787 if (msg->msg_magic != SRPC_MSG_MAGIC)
788 sfw_unpack_id(id);
789
790 for (j = 0; j < tsi->tsi_concur; j++) {
791 LIBCFS_ALLOC(tsu, sizeof(sfw_test_unit_t));
792 if (tsu == NULL) {
793 rc = -ENOMEM;
794 CERROR("Can't allocate tsu for %d\n",
795 tsi->tsi_service);
796 goto error;
797 }
798
799 tsu->tsu_dest.nid = id.nid;
800 tsu->tsu_dest.pid = id.pid;
801 tsu->tsu_instance = tsi;
802 tsu->tsu_private = NULL;
803 list_add_tail(&tsu->tsu_list, &tsi->tsi_units);
804 }
805 }
806
807 rc = tsi->tsi_ops->tso_init(tsi);
808 if (rc == 0) {
809 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
810 return 0;
811 }
812
813 error:
814 LASSERT(rc != 0);
815 sfw_destroy_test_instance(tsi);
816 return rc;
817 }
818
819 static void
sfw_test_unit_done(sfw_test_unit_t * tsu)820 sfw_test_unit_done(sfw_test_unit_t *tsu)
821 {
822 sfw_test_instance_t *tsi = tsu->tsu_instance;
823 sfw_batch_t *tsb = tsi->tsi_batch;
824 sfw_session_t *sn = tsb->bat_session;
825
826 LASSERT(sfw_test_active(tsi));
827
828 if (!atomic_dec_and_test(&tsi->tsi_nactive))
829 return;
830
831 /* the test instance is done */
832 spin_lock(&tsi->tsi_lock);
833
834 tsi->tsi_stopping = 0;
835
836 spin_unlock(&tsi->tsi_lock);
837
838 spin_lock(&sfw_data.fw_lock);
839
840 if (!atomic_dec_and_test(&tsb->bat_nactive) ||/* tsb still active */
841 sn == sfw_data.fw_session) { /* sn also active */
842 spin_unlock(&sfw_data.fw_lock);
843 return;
844 }
845
846 LASSERT(!list_empty(&sn->sn_list)); /* I'm a zombie! */
847
848 list_for_each_entry(tsb, &sn->sn_batches, bat_list) {
849 if (sfw_batch_active(tsb)) {
850 spin_unlock(&sfw_data.fw_lock);
851 return;
852 }
853 }
854
855 list_del_init(&sn->sn_list);
856 spin_unlock(&sfw_data.fw_lock);
857
858 sfw_destroy_session(sn);
859 return;
860 }
861
862 static void
sfw_test_rpc_done(srpc_client_rpc_t * rpc)863 sfw_test_rpc_done(srpc_client_rpc_t *rpc)
864 {
865 sfw_test_unit_t *tsu = rpc->crpc_priv;
866 sfw_test_instance_t *tsi = tsu->tsu_instance;
867 int done = 0;
868
869 tsi->tsi_ops->tso_done_rpc(tsu, rpc);
870
871 spin_lock(&tsi->tsi_lock);
872
873 LASSERT(sfw_test_active(tsi));
874 LASSERT(!list_empty(&rpc->crpc_list));
875
876 list_del_init(&rpc->crpc_list);
877
878 /* batch is stopping or loop is done or get error */
879 if (tsi->tsi_stopping ||
880 tsu->tsu_loop == 0 ||
881 (rpc->crpc_status != 0 && tsi->tsi_stoptsu_onerr))
882 done = 1;
883
884 /* dec ref for poster */
885 srpc_client_rpc_decref(rpc);
886
887 spin_unlock(&tsi->tsi_lock);
888
889 if (!done) {
890 swi_schedule_workitem(&tsu->tsu_worker);
891 return;
892 }
893
894 sfw_test_unit_done(tsu);
895 return;
896 }
897
898 int
sfw_create_test_rpc(sfw_test_unit_t * tsu,lnet_process_id_t peer,unsigned features,int nblk,int blklen,srpc_client_rpc_t ** rpcpp)899 sfw_create_test_rpc(sfw_test_unit_t *tsu, lnet_process_id_t peer,
900 unsigned features, int nblk, int blklen,
901 srpc_client_rpc_t **rpcpp)
902 {
903 srpc_client_rpc_t *rpc = NULL;
904 sfw_test_instance_t *tsi = tsu->tsu_instance;
905
906 spin_lock(&tsi->tsi_lock);
907
908 LASSERT(sfw_test_active(tsi));
909
910 if (!list_empty(&tsi->tsi_free_rpcs)) {
911 /* pick request from buffer */
912 rpc = list_entry(tsi->tsi_free_rpcs.next,
913 srpc_client_rpc_t, crpc_list);
914 LASSERT(nblk == rpc->crpc_bulk.bk_niov);
915 list_del_init(&rpc->crpc_list);
916 }
917
918 spin_unlock(&tsi->tsi_lock);
919
920 if (rpc == NULL) {
921 rpc = srpc_create_client_rpc(peer, tsi->tsi_service, nblk,
922 blklen, sfw_test_rpc_done,
923 sfw_test_rpc_fini, tsu);
924 } else {
925 srpc_init_client_rpc(rpc, peer, tsi->tsi_service, nblk,
926 blklen, sfw_test_rpc_done,
927 sfw_test_rpc_fini, tsu);
928 }
929
930 if (rpc == NULL) {
931 CERROR("Can't create rpc for test %d\n", tsi->tsi_service);
932 return -ENOMEM;
933 }
934
935 rpc->crpc_reqstmsg.msg_ses_feats = features;
936 *rpcpp = rpc;
937
938 return 0;
939 }
940
941 static int
sfw_run_test(swi_workitem_t * wi)942 sfw_run_test(swi_workitem_t *wi)
943 {
944 sfw_test_unit_t *tsu = wi->swi_workitem.wi_data;
945 sfw_test_instance_t *tsi = tsu->tsu_instance;
946 srpc_client_rpc_t *rpc = NULL;
947
948 LASSERT(wi == &tsu->tsu_worker);
949
950 if (tsi->tsi_ops->tso_prep_rpc(tsu, tsu->tsu_dest, &rpc) != 0) {
951 LASSERT(rpc == NULL);
952 goto test_done;
953 }
954
955 LASSERT(rpc != NULL);
956
957 spin_lock(&tsi->tsi_lock);
958
959 if (tsi->tsi_stopping) {
960 list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
961 spin_unlock(&tsi->tsi_lock);
962 goto test_done;
963 }
964
965 if (tsu->tsu_loop > 0)
966 tsu->tsu_loop--;
967
968 list_add_tail(&rpc->crpc_list, &tsi->tsi_active_rpcs);
969 spin_unlock(&tsi->tsi_lock);
970
971 rpc->crpc_timeout = rpc_timeout;
972
973 spin_lock(&rpc->crpc_lock);
974 srpc_post_rpc(rpc);
975 spin_unlock(&rpc->crpc_lock);
976 return 0;
977
978 test_done:
979 /*
980 * No one can schedule me now since:
981 * - previous RPC, if any, has done and
982 * - no new RPC is initiated.
983 * - my batch is still active; no one can run it again now.
984 * Cancel pending schedules and prevent future schedule attempts:
985 */
986 swi_exit_workitem(wi);
987 sfw_test_unit_done(tsu);
988 return 1;
989 }
990
991 static int
sfw_run_batch(sfw_batch_t * tsb)992 sfw_run_batch(sfw_batch_t *tsb)
993 {
994 swi_workitem_t *wi;
995 sfw_test_unit_t *tsu;
996 sfw_test_instance_t *tsi;
997
998 if (sfw_batch_active(tsb)) {
999 CDEBUG(D_NET, "Batch already active: %llu (%d)\n",
1000 tsb->bat_id.bat_id, atomic_read(&tsb->bat_nactive));
1001 return 0;
1002 }
1003
1004 list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1005 if (!tsi->tsi_is_client) /* skip server instances */
1006 continue;
1007
1008 LASSERT(!tsi->tsi_stopping);
1009 LASSERT(!sfw_test_active(tsi));
1010
1011 atomic_inc(&tsb->bat_nactive);
1012
1013 list_for_each_entry(tsu, &tsi->tsi_units, tsu_list) {
1014 atomic_inc(&tsi->tsi_nactive);
1015 tsu->tsu_loop = tsi->tsi_loop;
1016 wi = &tsu->tsu_worker;
1017 swi_init_workitem(wi, tsu, sfw_run_test,
1018 lst_sched_test[\
1019 lnet_cpt_of_nid(tsu->tsu_dest.nid)]);
1020 swi_schedule_workitem(wi);
1021 }
1022 }
1023
1024 return 0;
1025 }
1026
1027 int
sfw_stop_batch(sfw_batch_t * tsb,int force)1028 sfw_stop_batch(sfw_batch_t *tsb, int force)
1029 {
1030 sfw_test_instance_t *tsi;
1031 srpc_client_rpc_t *rpc;
1032
1033 if (!sfw_batch_active(tsb)) {
1034 CDEBUG(D_NET, "Batch %llu inactive\n", tsb->bat_id.bat_id);
1035 return 0;
1036 }
1037
1038 list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1039 spin_lock(&tsi->tsi_lock);
1040
1041 if (!tsi->tsi_is_client ||
1042 !sfw_test_active(tsi) || tsi->tsi_stopping) {
1043 spin_unlock(&tsi->tsi_lock);
1044 continue;
1045 }
1046
1047 tsi->tsi_stopping = 1;
1048
1049 if (!force) {
1050 spin_unlock(&tsi->tsi_lock);
1051 continue;
1052 }
1053
1054 /* abort launched rpcs in the test */
1055 list_for_each_entry(rpc, &tsi->tsi_active_rpcs, crpc_list) {
1056 spin_lock(&rpc->crpc_lock);
1057
1058 srpc_abort_rpc(rpc, -EINTR);
1059
1060 spin_unlock(&rpc->crpc_lock);
1061 }
1062
1063 spin_unlock(&tsi->tsi_lock);
1064 }
1065
1066 return 0;
1067 }
1068
1069 static int
sfw_query_batch(sfw_batch_t * tsb,int testidx,srpc_batch_reply_t * reply)1070 sfw_query_batch(sfw_batch_t *tsb, int testidx, srpc_batch_reply_t *reply)
1071 {
1072 sfw_test_instance_t *tsi;
1073
1074 if (testidx < 0)
1075 return -EINVAL;
1076
1077 if (testidx == 0) {
1078 reply->bar_active = atomic_read(&tsb->bat_nactive);
1079 return 0;
1080 }
1081
1082 list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1083 if (testidx-- > 1)
1084 continue;
1085
1086 reply->bar_active = atomic_read(&tsi->tsi_nactive);
1087 return 0;
1088 }
1089
1090 return -ENOENT;
1091 }
1092
1093 void
sfw_free_pages(srpc_server_rpc_t * rpc)1094 sfw_free_pages(srpc_server_rpc_t *rpc)
1095 {
1096 srpc_free_bulk(rpc->srpc_bulk);
1097 rpc->srpc_bulk = NULL;
1098 }
1099
1100 int
sfw_alloc_pages(struct srpc_server_rpc * rpc,int cpt,int npages,int len,int sink)1101 sfw_alloc_pages(struct srpc_server_rpc *rpc, int cpt, int npages, int len,
1102 int sink)
1103 {
1104 LASSERT(rpc->srpc_bulk == NULL);
1105 LASSERT(npages > 0 && npages <= LNET_MAX_IOV);
1106
1107 rpc->srpc_bulk = srpc_alloc_bulk(cpt, npages, len, sink);
1108 if (rpc->srpc_bulk == NULL)
1109 return -ENOMEM;
1110
1111 return 0;
1112 }
1113
1114 static int
sfw_add_test(srpc_server_rpc_t * rpc)1115 sfw_add_test(srpc_server_rpc_t *rpc)
1116 {
1117 sfw_session_t *sn = sfw_data.fw_session;
1118 srpc_test_reply_t *reply = &rpc->srpc_replymsg.msg_body.tes_reply;
1119 srpc_test_reqst_t *request;
1120 int rc;
1121 sfw_batch_t *bat;
1122
1123 request = &rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst;
1124 reply->tsr_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
1125
1126 if (request->tsr_loop == 0 ||
1127 request->tsr_concur == 0 ||
1128 request->tsr_sid.ses_nid == LNET_NID_ANY ||
1129 request->tsr_ndest > SFW_MAX_NDESTS ||
1130 (request->tsr_is_client && request->tsr_ndest == 0) ||
1131 request->tsr_concur > SFW_MAX_CONCUR ||
1132 request->tsr_service > SRPC_SERVICE_MAX_ID ||
1133 request->tsr_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID) {
1134 reply->tsr_status = EINVAL;
1135 return 0;
1136 }
1137
1138 if (sn == NULL || !sfw_sid_equal(request->tsr_sid, sn->sn_id) ||
1139 sfw_find_test_case(request->tsr_service) == NULL) {
1140 reply->tsr_status = ENOENT;
1141 return 0;
1142 }
1143
1144 bat = sfw_bid2batch(request->tsr_bid);
1145 if (bat == NULL) {
1146 CERROR("Dropping RPC (%s) from %s under memory pressure.\n",
1147 rpc->srpc_scd->scd_svc->sv_name,
1148 libcfs_id2str(rpc->srpc_peer));
1149 return -ENOMEM;
1150 }
1151
1152 if (sfw_batch_active(bat)) {
1153 reply->tsr_status = EBUSY;
1154 return 0;
1155 }
1156
1157 if (request->tsr_is_client && rpc->srpc_bulk == NULL) {
1158 /* rpc will be resumed later in sfw_bulk_ready */
1159 int npg = sfw_id_pages(request->tsr_ndest);
1160 int len;
1161
1162 if ((sn->sn_features & LST_FEAT_BULK_LEN) == 0) {
1163 len = npg * PAGE_CACHE_SIZE;
1164
1165 } else {
1166 len = sizeof(lnet_process_id_packed_t) *
1167 request->tsr_ndest;
1168 }
1169
1170 return sfw_alloc_pages(rpc, CFS_CPT_ANY, npg, len, 1);
1171 }
1172
1173 rc = sfw_add_test_instance(bat, rpc);
1174 CDEBUG(rc == 0 ? D_NET : D_WARNING,
1175 "%s test: sv %d %s, loop %d, concur %d, ndest %d\n",
1176 rc == 0 ? "Added" : "Failed to add", request->tsr_service,
1177 request->tsr_is_client ? "client" : "server",
1178 request->tsr_loop, request->tsr_concur, request->tsr_ndest);
1179
1180 reply->tsr_status = (rc < 0) ? -rc : rc;
1181 return 0;
1182 }
1183
1184 static int
sfw_control_batch(srpc_batch_reqst_t * request,srpc_batch_reply_t * reply)1185 sfw_control_batch(srpc_batch_reqst_t *request, srpc_batch_reply_t *reply)
1186 {
1187 sfw_session_t *sn = sfw_data.fw_session;
1188 int rc = 0;
1189 sfw_batch_t *bat;
1190
1191 reply->bar_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
1192
1193 if (sn == NULL || !sfw_sid_equal(request->bar_sid, sn->sn_id)) {
1194 reply->bar_status = ESRCH;
1195 return 0;
1196 }
1197
1198 bat = sfw_find_batch(request->bar_bid);
1199 if (bat == NULL) {
1200 reply->bar_status = ENOENT;
1201 return 0;
1202 }
1203
1204 switch (request->bar_opc) {
1205 case SRPC_BATCH_OPC_RUN:
1206 rc = sfw_run_batch(bat);
1207 break;
1208
1209 case SRPC_BATCH_OPC_STOP:
1210 rc = sfw_stop_batch(bat, request->bar_arg);
1211 break;
1212
1213 case SRPC_BATCH_OPC_QUERY:
1214 rc = sfw_query_batch(bat, request->bar_testidx, reply);
1215 break;
1216
1217 default:
1218 return -EINVAL; /* drop it */
1219 }
1220
1221 reply->bar_status = (rc < 0) ? -rc : rc;
1222 return 0;
1223 }
1224
1225 static int
sfw_handle_server_rpc(struct srpc_server_rpc * rpc)1226 sfw_handle_server_rpc(struct srpc_server_rpc *rpc)
1227 {
1228 struct srpc_service *sv = rpc->srpc_scd->scd_svc;
1229 srpc_msg_t *reply = &rpc->srpc_replymsg;
1230 srpc_msg_t *request = &rpc->srpc_reqstbuf->buf_msg;
1231 unsigned features = LST_FEATS_MASK;
1232 int rc = 0;
1233
1234 LASSERT(sfw_data.fw_active_srpc == NULL);
1235 LASSERT(sv->sv_id <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1236
1237 spin_lock(&sfw_data.fw_lock);
1238
1239 if (sfw_data.fw_shuttingdown) {
1240 spin_unlock(&sfw_data.fw_lock);
1241 return -ESHUTDOWN;
1242 }
1243
1244 /* Remove timer to avoid racing with it or expiring active session */
1245 if (sfw_del_session_timer() != 0) {
1246 CERROR("Dropping RPC (%s) from %s: racing with expiry timer.",
1247 sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1248 spin_unlock(&sfw_data.fw_lock);
1249 return -EAGAIN;
1250 }
1251
1252 sfw_data.fw_active_srpc = rpc;
1253 spin_unlock(&sfw_data.fw_lock);
1254
1255 sfw_unpack_message(request);
1256 LASSERT(request->msg_type == srpc_service2request(sv->sv_id));
1257
1258 /* rpc module should have checked this */
1259 LASSERT(request->msg_version == SRPC_MSG_VERSION);
1260
1261 if (sv->sv_id != SRPC_SERVICE_MAKE_SESSION &&
1262 sv->sv_id != SRPC_SERVICE_DEBUG) {
1263 sfw_session_t *sn = sfw_data.fw_session;
1264
1265 if (sn != NULL &&
1266 sn->sn_features != request->msg_ses_feats) {
1267 CNETERR("Features of framework RPC don't match features of current session: %x/%x\n",
1268 request->msg_ses_feats, sn->sn_features);
1269 reply->msg_body.reply.status = EPROTO;
1270 reply->msg_body.reply.sid = sn->sn_id;
1271 goto out;
1272 }
1273
1274 } else if ((request->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
1275 /* NB: at this point, old version will ignore features and
1276 * create new session anyway, so console should be able
1277 * to handle this */
1278 reply->msg_body.reply.status = EPROTO;
1279 goto out;
1280 }
1281
1282 switch (sv->sv_id) {
1283 default:
1284 LBUG();
1285 case SRPC_SERVICE_TEST:
1286 rc = sfw_add_test(rpc);
1287 break;
1288
1289 case SRPC_SERVICE_BATCH:
1290 rc = sfw_control_batch(&request->msg_body.bat_reqst,
1291 &reply->msg_body.bat_reply);
1292 break;
1293
1294 case SRPC_SERVICE_QUERY_STAT:
1295 rc = sfw_get_stats(&request->msg_body.stat_reqst,
1296 &reply->msg_body.stat_reply);
1297 break;
1298
1299 case SRPC_SERVICE_DEBUG:
1300 rc = sfw_debug_session(&request->msg_body.dbg_reqst,
1301 &reply->msg_body.dbg_reply);
1302 break;
1303
1304 case SRPC_SERVICE_MAKE_SESSION:
1305 rc = sfw_make_session(&request->msg_body.mksn_reqst,
1306 &reply->msg_body.mksn_reply);
1307 break;
1308
1309 case SRPC_SERVICE_REMOVE_SESSION:
1310 rc = sfw_remove_session(&request->msg_body.rmsn_reqst,
1311 &reply->msg_body.rmsn_reply);
1312 break;
1313 }
1314
1315 if (sfw_data.fw_session != NULL)
1316 features = sfw_data.fw_session->sn_features;
1317 out:
1318 reply->msg_ses_feats = features;
1319 rpc->srpc_done = sfw_server_rpc_done;
1320 spin_lock(&sfw_data.fw_lock);
1321
1322 if (!sfw_data.fw_shuttingdown)
1323 sfw_add_session_timer();
1324
1325 sfw_data.fw_active_srpc = NULL;
1326 spin_unlock(&sfw_data.fw_lock);
1327 return rc;
1328 }
1329
1330 static int
sfw_bulk_ready(struct srpc_server_rpc * rpc,int status)1331 sfw_bulk_ready(struct srpc_server_rpc *rpc, int status)
1332 {
1333 struct srpc_service *sv = rpc->srpc_scd->scd_svc;
1334 int rc;
1335
1336 LASSERT(rpc->srpc_bulk != NULL);
1337 LASSERT(sv->sv_id == SRPC_SERVICE_TEST);
1338 LASSERT(sfw_data.fw_active_srpc == NULL);
1339 LASSERT(rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst.tsr_is_client);
1340
1341 spin_lock(&sfw_data.fw_lock);
1342
1343 if (status != 0) {
1344 CERROR("Bulk transfer failed for RPC: service %s, peer %s, status %d\n",
1345 sv->sv_name, libcfs_id2str(rpc->srpc_peer), status);
1346 spin_unlock(&sfw_data.fw_lock);
1347 return -EIO;
1348 }
1349
1350 if (sfw_data.fw_shuttingdown) {
1351 spin_unlock(&sfw_data.fw_lock);
1352 return -ESHUTDOWN;
1353 }
1354
1355 if (sfw_del_session_timer() != 0) {
1356 CERROR("Dropping RPC (%s) from %s: racing with expiry timer",
1357 sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1358 spin_unlock(&sfw_data.fw_lock);
1359 return -EAGAIN;
1360 }
1361
1362 sfw_data.fw_active_srpc = rpc;
1363 spin_unlock(&sfw_data.fw_lock);
1364
1365 rc = sfw_add_test(rpc);
1366
1367 spin_lock(&sfw_data.fw_lock);
1368
1369 if (!sfw_data.fw_shuttingdown)
1370 sfw_add_session_timer();
1371
1372 sfw_data.fw_active_srpc = NULL;
1373 spin_unlock(&sfw_data.fw_lock);
1374 return rc;
1375 }
1376
1377 srpc_client_rpc_t *
sfw_create_rpc(lnet_process_id_t peer,int service,unsigned features,int nbulkiov,int bulklen,void (* done)(srpc_client_rpc_t *),void * priv)1378 sfw_create_rpc(lnet_process_id_t peer, int service,
1379 unsigned features, int nbulkiov, int bulklen,
1380 void (*done)(srpc_client_rpc_t *), void *priv)
1381 {
1382 srpc_client_rpc_t *rpc = NULL;
1383
1384 spin_lock(&sfw_data.fw_lock);
1385
1386 LASSERT(!sfw_data.fw_shuttingdown);
1387 LASSERT(service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1388
1389 if (nbulkiov == 0 && !list_empty(&sfw_data.fw_zombie_rpcs)) {
1390 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1391 srpc_client_rpc_t, crpc_list);
1392 list_del(&rpc->crpc_list);
1393
1394 srpc_init_client_rpc(rpc, peer, service, 0, 0,
1395 done, sfw_client_rpc_fini, priv);
1396 }
1397
1398 spin_unlock(&sfw_data.fw_lock);
1399
1400 if (rpc == NULL) {
1401 rpc = srpc_create_client_rpc(peer, service,
1402 nbulkiov, bulklen, done,
1403 nbulkiov != 0 ? NULL :
1404 sfw_client_rpc_fini,
1405 priv);
1406 }
1407
1408 if (rpc != NULL) /* "session" is concept in framework */
1409 rpc->crpc_reqstmsg.msg_ses_feats = features;
1410
1411 return rpc;
1412 }
1413
1414 void
sfw_unpack_message(srpc_msg_t * msg)1415 sfw_unpack_message(srpc_msg_t *msg)
1416 {
1417 if (msg->msg_magic == SRPC_MSG_MAGIC)
1418 return; /* no flipping needed */
1419
1420 /* srpc module should guarantee I wouldn't get crap */
1421 LASSERT(msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
1422
1423 if (msg->msg_type == SRPC_MSG_STAT_REQST) {
1424 srpc_stat_reqst_t *req = &msg->msg_body.stat_reqst;
1425
1426 __swab32s(&req->str_type);
1427 __swab64s(&req->str_rpyid);
1428 sfw_unpack_sid(req->str_sid);
1429 return;
1430 }
1431
1432 if (msg->msg_type == SRPC_MSG_STAT_REPLY) {
1433 srpc_stat_reply_t *rep = &msg->msg_body.stat_reply;
1434
1435 __swab32s(&rep->str_status);
1436 sfw_unpack_sid(rep->str_sid);
1437 sfw_unpack_fw_counters(rep->str_fw);
1438 sfw_unpack_rpc_counters(rep->str_rpc);
1439 sfw_unpack_lnet_counters(rep->str_lnet);
1440 return;
1441 }
1442
1443 if (msg->msg_type == SRPC_MSG_MKSN_REQST) {
1444 srpc_mksn_reqst_t *req = &msg->msg_body.mksn_reqst;
1445
1446 __swab64s(&req->mksn_rpyid);
1447 __swab32s(&req->mksn_force);
1448 sfw_unpack_sid(req->mksn_sid);
1449 return;
1450 }
1451
1452 if (msg->msg_type == SRPC_MSG_MKSN_REPLY) {
1453 srpc_mksn_reply_t *rep = &msg->msg_body.mksn_reply;
1454
1455 __swab32s(&rep->mksn_status);
1456 __swab32s(&rep->mksn_timeout);
1457 sfw_unpack_sid(rep->mksn_sid);
1458 return;
1459 }
1460
1461 if (msg->msg_type == SRPC_MSG_RMSN_REQST) {
1462 srpc_rmsn_reqst_t *req = &msg->msg_body.rmsn_reqst;
1463
1464 __swab64s(&req->rmsn_rpyid);
1465 sfw_unpack_sid(req->rmsn_sid);
1466 return;
1467 }
1468
1469 if (msg->msg_type == SRPC_MSG_RMSN_REPLY) {
1470 srpc_rmsn_reply_t *rep = &msg->msg_body.rmsn_reply;
1471
1472 __swab32s(&rep->rmsn_status);
1473 sfw_unpack_sid(rep->rmsn_sid);
1474 return;
1475 }
1476
1477 if (msg->msg_type == SRPC_MSG_DEBUG_REQST) {
1478 srpc_debug_reqst_t *req = &msg->msg_body.dbg_reqst;
1479
1480 __swab64s(&req->dbg_rpyid);
1481 __swab32s(&req->dbg_flags);
1482 sfw_unpack_sid(req->dbg_sid);
1483 return;
1484 }
1485
1486 if (msg->msg_type == SRPC_MSG_DEBUG_REPLY) {
1487 srpc_debug_reply_t *rep = &msg->msg_body.dbg_reply;
1488
1489 __swab32s(&rep->dbg_nbatch);
1490 __swab32s(&rep->dbg_timeout);
1491 sfw_unpack_sid(rep->dbg_sid);
1492 return;
1493 }
1494
1495 if (msg->msg_type == SRPC_MSG_BATCH_REQST) {
1496 srpc_batch_reqst_t *req = &msg->msg_body.bat_reqst;
1497
1498 __swab32s(&req->bar_opc);
1499 __swab64s(&req->bar_rpyid);
1500 __swab32s(&req->bar_testidx);
1501 __swab32s(&req->bar_arg);
1502 sfw_unpack_sid(req->bar_sid);
1503 __swab64s(&req->bar_bid.bat_id);
1504 return;
1505 }
1506
1507 if (msg->msg_type == SRPC_MSG_BATCH_REPLY) {
1508 srpc_batch_reply_t *rep = &msg->msg_body.bat_reply;
1509
1510 __swab32s(&rep->bar_status);
1511 sfw_unpack_sid(rep->bar_sid);
1512 return;
1513 }
1514
1515 if (msg->msg_type == SRPC_MSG_TEST_REQST) {
1516 srpc_test_reqst_t *req = &msg->msg_body.tes_reqst;
1517
1518 __swab64s(&req->tsr_rpyid);
1519 __swab64s(&req->tsr_bulkid);
1520 __swab32s(&req->tsr_loop);
1521 __swab32s(&req->tsr_ndest);
1522 __swab32s(&req->tsr_concur);
1523 __swab32s(&req->tsr_service);
1524 sfw_unpack_sid(req->tsr_sid);
1525 __swab64s(&req->tsr_bid.bat_id);
1526 return;
1527 }
1528
1529 if (msg->msg_type == SRPC_MSG_TEST_REPLY) {
1530 srpc_test_reply_t *rep = &msg->msg_body.tes_reply;
1531
1532 __swab32s(&rep->tsr_status);
1533 sfw_unpack_sid(rep->tsr_sid);
1534 return;
1535 }
1536
1537 if (msg->msg_type == SRPC_MSG_JOIN_REQST) {
1538 srpc_join_reqst_t *req = &msg->msg_body.join_reqst;
1539
1540 __swab64s(&req->join_rpyid);
1541 sfw_unpack_sid(req->join_sid);
1542 return;
1543 }
1544
1545 if (msg->msg_type == SRPC_MSG_JOIN_REPLY) {
1546 srpc_join_reply_t *rep = &msg->msg_body.join_reply;
1547
1548 __swab32s(&rep->join_status);
1549 __swab32s(&rep->join_timeout);
1550 sfw_unpack_sid(rep->join_sid);
1551 return;
1552 }
1553
1554 LBUG();
1555 return;
1556 }
1557
1558 void
sfw_abort_rpc(srpc_client_rpc_t * rpc)1559 sfw_abort_rpc(srpc_client_rpc_t *rpc)
1560 {
1561 LASSERT(atomic_read(&rpc->crpc_refcount) > 0);
1562 LASSERT(rpc->crpc_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1563
1564 spin_lock(&rpc->crpc_lock);
1565 srpc_abort_rpc(rpc, -EINTR);
1566 spin_unlock(&rpc->crpc_lock);
1567 return;
1568 }
1569
1570 void
sfw_post_rpc(srpc_client_rpc_t * rpc)1571 sfw_post_rpc(srpc_client_rpc_t *rpc)
1572 {
1573 spin_lock(&rpc->crpc_lock);
1574
1575 LASSERT(!rpc->crpc_closed);
1576 LASSERT(!rpc->crpc_aborted);
1577 LASSERT(list_empty(&rpc->crpc_list));
1578 LASSERT(!sfw_data.fw_shuttingdown);
1579
1580 rpc->crpc_timeout = rpc_timeout;
1581 srpc_post_rpc(rpc);
1582
1583 spin_unlock(&rpc->crpc_lock);
1584 return;
1585 }
1586
1587 static srpc_service_t sfw_services[] = {
1588 {
1589 /* sv_id */ SRPC_SERVICE_DEBUG,
1590 /* sv_name */ "debug",
1591 0
1592 },
1593 {
1594 /* sv_id */ SRPC_SERVICE_QUERY_STAT,
1595 /* sv_name */ "query stats",
1596 0
1597 },
1598 {
1599 /* sv_id */ SRPC_SERVICE_MAKE_SESSION,
1600 /* sv_name */ "make session",
1601 0
1602 },
1603 {
1604 /* sv_id */ SRPC_SERVICE_REMOVE_SESSION,
1605 /* sv_name */ "remove session",
1606 0
1607 },
1608 {
1609 /* sv_id */ SRPC_SERVICE_BATCH,
1610 /* sv_name */ "batch service",
1611 0
1612 },
1613 {
1614 /* sv_id */ SRPC_SERVICE_TEST,
1615 /* sv_name */ "test service",
1616 0
1617 },
1618 {
1619 /* sv_id */ 0,
1620 /* sv_name */ NULL,
1621 0
1622 }
1623 };
1624
1625 extern sfw_test_client_ops_t ping_test_client;
1626 extern srpc_service_t ping_test_service;
1627 extern void ping_init_test_client(void);
1628 extern void ping_init_test_service(void);
1629
1630 extern sfw_test_client_ops_t brw_test_client;
1631 extern srpc_service_t brw_test_service;
1632 extern void brw_init_test_client(void);
1633 extern void brw_init_test_service(void);
1634
1635 int
sfw_startup(void)1636 sfw_startup(void)
1637 {
1638 int i;
1639 int rc;
1640 int error;
1641 srpc_service_t *sv;
1642 sfw_test_case_t *tsc;
1643
1644 if (session_timeout < 0) {
1645 CERROR("Session timeout must be non-negative: %d\n",
1646 session_timeout);
1647 return -EINVAL;
1648 }
1649
1650 if (rpc_timeout < 0) {
1651 CERROR("RPC timeout must be non-negative: %d\n",
1652 rpc_timeout);
1653 return -EINVAL;
1654 }
1655
1656 if (session_timeout == 0)
1657 CWARN("Zero session_timeout specified - test sessions never expire.\n");
1658
1659 if (rpc_timeout == 0)
1660 CWARN("Zero rpc_timeout specified - test RPC never expire.\n");
1661
1662 memset(&sfw_data, 0, sizeof(struct smoketest_framework));
1663
1664 sfw_data.fw_session = NULL;
1665 sfw_data.fw_active_srpc = NULL;
1666 spin_lock_init(&sfw_data.fw_lock);
1667 atomic_set(&sfw_data.fw_nzombies, 0);
1668 INIT_LIST_HEAD(&sfw_data.fw_tests);
1669 INIT_LIST_HEAD(&sfw_data.fw_zombie_rpcs);
1670 INIT_LIST_HEAD(&sfw_data.fw_zombie_sessions);
1671
1672 brw_init_test_client();
1673 brw_init_test_service();
1674 rc = sfw_register_test(&brw_test_service, &brw_test_client);
1675 LASSERT(rc == 0);
1676
1677 ping_init_test_client();
1678 ping_init_test_service();
1679 rc = sfw_register_test(&ping_test_service, &ping_test_client);
1680 LASSERT(rc == 0);
1681
1682 error = 0;
1683 list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1684 sv = tsc->tsc_srv_service;
1685
1686 rc = srpc_add_service(sv);
1687 LASSERT(rc != -EBUSY);
1688 if (rc != 0) {
1689 CWARN("Failed to add %s service: %d\n",
1690 sv->sv_name, rc);
1691 error = rc;
1692 }
1693 }
1694
1695 for (i = 0; ; i++) {
1696 sv = &sfw_services[i];
1697 if (sv->sv_name == NULL)
1698 break;
1699
1700 sv->sv_bulk_ready = NULL;
1701 sv->sv_handler = sfw_handle_server_rpc;
1702 sv->sv_wi_total = SFW_FRWK_WI_MAX;
1703 if (sv->sv_id == SRPC_SERVICE_TEST)
1704 sv->sv_bulk_ready = sfw_bulk_ready;
1705
1706 rc = srpc_add_service(sv);
1707 LASSERT(rc != -EBUSY);
1708 if (rc != 0) {
1709 CWARN("Failed to add %s service: %d\n",
1710 sv->sv_name, rc);
1711 error = rc;
1712 }
1713
1714 /* about to sfw_shutdown, no need to add buffer */
1715 if (error)
1716 continue;
1717
1718 rc = srpc_service_add_buffers(sv, sv->sv_wi_total);
1719 if (rc != 0) {
1720 CWARN("Failed to reserve enough buffers: service %s, %d needed: %d\n",
1721 sv->sv_name, sv->sv_wi_total, rc);
1722 error = -ENOMEM;
1723 }
1724 }
1725
1726 if (error != 0)
1727 sfw_shutdown();
1728 return error;
1729 }
1730
1731 void
sfw_shutdown(void)1732 sfw_shutdown(void)
1733 {
1734 srpc_service_t *sv;
1735 sfw_test_case_t *tsc;
1736 int i;
1737
1738 spin_lock(&sfw_data.fw_lock);
1739
1740 sfw_data.fw_shuttingdown = 1;
1741 lst_wait_until(sfw_data.fw_active_srpc == NULL, sfw_data.fw_lock,
1742 "waiting for active RPC to finish.\n");
1743
1744 if (sfw_del_session_timer() != 0)
1745 lst_wait_until(sfw_data.fw_session == NULL, sfw_data.fw_lock,
1746 "waiting for session timer to explode.\n");
1747
1748 sfw_deactivate_session();
1749 lst_wait_until(atomic_read(&sfw_data.fw_nzombies) == 0,
1750 sfw_data.fw_lock,
1751 "waiting for %d zombie sessions to die.\n",
1752 atomic_read(&sfw_data.fw_nzombies));
1753
1754 spin_unlock(&sfw_data.fw_lock);
1755
1756 for (i = 0; ; i++) {
1757 sv = &sfw_services[i];
1758 if (sv->sv_name == NULL)
1759 break;
1760
1761 srpc_shutdown_service(sv);
1762 srpc_remove_service(sv);
1763 }
1764
1765 list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1766 sv = tsc->tsc_srv_service;
1767 srpc_shutdown_service(sv);
1768 srpc_remove_service(sv);
1769 }
1770
1771 while (!list_empty(&sfw_data.fw_zombie_rpcs)) {
1772 srpc_client_rpc_t *rpc;
1773
1774 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1775 srpc_client_rpc_t, crpc_list);
1776 list_del(&rpc->crpc_list);
1777
1778 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
1779 }
1780
1781 for (i = 0; ; i++) {
1782 sv = &sfw_services[i];
1783 if (sv->sv_name == NULL)
1784 break;
1785
1786 srpc_wait_service_shutdown(sv);
1787 }
1788
1789 while (!list_empty(&sfw_data.fw_tests)) {
1790 tsc = list_entry(sfw_data.fw_tests.next,
1791 sfw_test_case_t, tsc_list);
1792
1793 srpc_wait_service_shutdown(tsc->tsc_srv_service);
1794
1795 list_del(&tsc->tsc_list);
1796 LIBCFS_FREE(tsc, sizeof(*tsc));
1797 }
1798
1799 return;
1800 }
1801