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) 2011, 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/conctl.c
37 *
38 * Console framework rpcs
39 *
40 * Author: Liang Zhen <liang@whamcloud.com>
41 */
42
43 #include "../../include/linux/libcfs/libcfs.h"
44 #include "../../include/linux/lnet/lib-lnet.h"
45 #include "timer.h"
46 #include "conrpc.h"
47 #include "console.h"
48
49 void lstcon_rpc_stat_reply(lstcon_rpc_trans_t *, srpc_msg_t *,
50 lstcon_node_t *, lstcon_trans_stat_t *);
51
52 static void
lstcon_rpc_done(srpc_client_rpc_t * rpc)53 lstcon_rpc_done(srpc_client_rpc_t *rpc)
54 {
55 lstcon_rpc_t *crpc = (lstcon_rpc_t *)rpc->crpc_priv;
56
57 LASSERT(crpc != NULL && rpc == crpc->crp_rpc);
58 LASSERT(crpc->crp_posted && !crpc->crp_finished);
59
60 spin_lock(&rpc->crpc_lock);
61
62 if (crpc->crp_trans == NULL) {
63 /* Orphan RPC is not in any transaction,
64 * I'm just a poor body and nobody loves me */
65 spin_unlock(&rpc->crpc_lock);
66
67 /* release it */
68 lstcon_rpc_put(crpc);
69 return;
70 }
71
72 /* not an orphan RPC */
73 crpc->crp_finished = 1;
74
75 if (crpc->crp_stamp == 0) {
76 /* not aborted */
77 LASSERT(crpc->crp_status == 0);
78
79 crpc->crp_stamp = cfs_time_current();
80 crpc->crp_status = rpc->crpc_status;
81 }
82
83 /* wakeup (transaction)thread if I'm the last RPC in the transaction */
84 if (atomic_dec_and_test(&crpc->crp_trans->tas_remaining))
85 wake_up(&crpc->crp_trans->tas_waitq);
86
87 spin_unlock(&rpc->crpc_lock);
88 }
89
90 static int
lstcon_rpc_init(lstcon_node_t * nd,int service,unsigned feats,int bulk_npg,int bulk_len,int embedded,lstcon_rpc_t * crpc)91 lstcon_rpc_init(lstcon_node_t *nd, int service, unsigned feats,
92 int bulk_npg, int bulk_len, int embedded, lstcon_rpc_t *crpc)
93 {
94 crpc->crp_rpc = sfw_create_rpc(nd->nd_id, service,
95 feats, bulk_npg, bulk_len,
96 lstcon_rpc_done, (void *)crpc);
97 if (crpc->crp_rpc == NULL)
98 return -ENOMEM;
99
100 crpc->crp_trans = NULL;
101 crpc->crp_node = nd;
102 crpc->crp_posted = 0;
103 crpc->crp_finished = 0;
104 crpc->crp_unpacked = 0;
105 crpc->crp_status = 0;
106 crpc->crp_stamp = 0;
107 crpc->crp_embedded = embedded;
108 INIT_LIST_HEAD(&crpc->crp_link);
109
110 atomic_inc(&console_session.ses_rpc_counter);
111
112 return 0;
113 }
114
115 static int
lstcon_rpc_prep(lstcon_node_t * nd,int service,unsigned feats,int bulk_npg,int bulk_len,lstcon_rpc_t ** crpcpp)116 lstcon_rpc_prep(lstcon_node_t *nd, int service, unsigned feats,
117 int bulk_npg, int bulk_len, lstcon_rpc_t **crpcpp)
118 {
119 lstcon_rpc_t *crpc = NULL;
120 int rc;
121
122 spin_lock(&console_session.ses_rpc_lock);
123
124 if (!list_empty(&console_session.ses_rpc_freelist)) {
125 crpc = list_entry(console_session.ses_rpc_freelist.next,
126 lstcon_rpc_t, crp_link);
127 list_del_init(&crpc->crp_link);
128 }
129
130 spin_unlock(&console_session.ses_rpc_lock);
131
132 if (crpc == NULL) {
133 LIBCFS_ALLOC(crpc, sizeof(*crpc));
134 if (crpc == NULL)
135 return -ENOMEM;
136 }
137
138 rc = lstcon_rpc_init(nd, service, feats, bulk_npg, bulk_len, 0, crpc);
139 if (rc == 0) {
140 *crpcpp = crpc;
141 return 0;
142 }
143
144 LIBCFS_FREE(crpc, sizeof(*crpc));
145
146 return rc;
147 }
148
149 void
lstcon_rpc_put(lstcon_rpc_t * crpc)150 lstcon_rpc_put(lstcon_rpc_t *crpc)
151 {
152 srpc_bulk_t *bulk = &crpc->crp_rpc->crpc_bulk;
153 int i;
154
155 LASSERT(list_empty(&crpc->crp_link));
156
157 for (i = 0; i < bulk->bk_niov; i++) {
158 if (bulk->bk_iovs[i].kiov_page == NULL)
159 continue;
160
161 __free_page(bulk->bk_iovs[i].kiov_page);
162 }
163
164 srpc_client_rpc_decref(crpc->crp_rpc);
165
166 if (crpc->crp_embedded) {
167 /* embedded RPC, don't recycle it */
168 memset(crpc, 0, sizeof(*crpc));
169 crpc->crp_embedded = 1;
170
171 } else {
172 spin_lock(&console_session.ses_rpc_lock);
173
174 list_add(&crpc->crp_link,
175 &console_session.ses_rpc_freelist);
176
177 spin_unlock(&console_session.ses_rpc_lock);
178 }
179
180 /* RPC is not alive now */
181 atomic_dec(&console_session.ses_rpc_counter);
182 }
183
184 static void
lstcon_rpc_post(lstcon_rpc_t * crpc)185 lstcon_rpc_post(lstcon_rpc_t *crpc)
186 {
187 lstcon_rpc_trans_t *trans = crpc->crp_trans;
188
189 LASSERT(trans != NULL);
190
191 atomic_inc(&trans->tas_remaining);
192 crpc->crp_posted = 1;
193
194 sfw_post_rpc(crpc->crp_rpc);
195 }
196
197 static char *
lstcon_rpc_trans_name(int transop)198 lstcon_rpc_trans_name(int transop)
199 {
200 if (transop == LST_TRANS_SESNEW)
201 return "SESNEW";
202
203 if (transop == LST_TRANS_SESEND)
204 return "SESEND";
205
206 if (transop == LST_TRANS_SESQRY)
207 return "SESQRY";
208
209 if (transop == LST_TRANS_SESPING)
210 return "SESPING";
211
212 if (transop == LST_TRANS_TSBCLIADD)
213 return "TSBCLIADD";
214
215 if (transop == LST_TRANS_TSBSRVADD)
216 return "TSBSRVADD";
217
218 if (transop == LST_TRANS_TSBRUN)
219 return "TSBRUN";
220
221 if (transop == LST_TRANS_TSBSTOP)
222 return "TSBSTOP";
223
224 if (transop == LST_TRANS_TSBCLIQRY)
225 return "TSBCLIQRY";
226
227 if (transop == LST_TRANS_TSBSRVQRY)
228 return "TSBSRVQRY";
229
230 if (transop == LST_TRANS_STATQRY)
231 return "STATQRY";
232
233 return "Unknown";
234 }
235
236 int
lstcon_rpc_trans_prep(struct list_head * translist,int transop,lstcon_rpc_trans_t ** transpp)237 lstcon_rpc_trans_prep(struct list_head *translist,
238 int transop, lstcon_rpc_trans_t **transpp)
239 {
240 lstcon_rpc_trans_t *trans;
241
242 if (translist != NULL) {
243 list_for_each_entry(trans, translist, tas_link) {
244 /* Can't enqueue two private transaction on
245 * the same object */
246 if ((trans->tas_opc & transop) == LST_TRANS_PRIVATE)
247 return -EPERM;
248 }
249 }
250
251 /* create a trans group */
252 LIBCFS_ALLOC(trans, sizeof(*trans));
253 if (trans == NULL)
254 return -ENOMEM;
255
256 trans->tas_opc = transop;
257
258 if (translist == NULL)
259 INIT_LIST_HEAD(&trans->tas_olink);
260 else
261 list_add_tail(&trans->tas_olink, translist);
262
263 list_add_tail(&trans->tas_link, &console_session.ses_trans_list);
264
265 INIT_LIST_HEAD(&trans->tas_rpcs_list);
266 atomic_set(&trans->tas_remaining, 0);
267 init_waitqueue_head(&trans->tas_waitq);
268
269 spin_lock(&console_session.ses_rpc_lock);
270 trans->tas_features = console_session.ses_features;
271 spin_unlock(&console_session.ses_rpc_lock);
272
273 *transpp = trans;
274 return 0;
275 }
276
277 void
lstcon_rpc_trans_addreq(lstcon_rpc_trans_t * trans,lstcon_rpc_t * crpc)278 lstcon_rpc_trans_addreq(lstcon_rpc_trans_t *trans, lstcon_rpc_t *crpc)
279 {
280 list_add_tail(&crpc->crp_link, &trans->tas_rpcs_list);
281 crpc->crp_trans = trans;
282 }
283
284 void
lstcon_rpc_trans_abort(lstcon_rpc_trans_t * trans,int error)285 lstcon_rpc_trans_abort(lstcon_rpc_trans_t *trans, int error)
286 {
287 srpc_client_rpc_t *rpc;
288 lstcon_rpc_t *crpc;
289 lstcon_node_t *nd;
290
291 list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
292 rpc = crpc->crp_rpc;
293
294 spin_lock(&rpc->crpc_lock);
295
296 if (!crpc->crp_posted || /* not posted */
297 crpc->crp_stamp != 0) { /* rpc done or aborted already */
298 if (crpc->crp_stamp == 0) {
299 crpc->crp_stamp = cfs_time_current();
300 crpc->crp_status = -EINTR;
301 }
302 spin_unlock(&rpc->crpc_lock);
303 continue;
304 }
305
306 crpc->crp_stamp = cfs_time_current();
307 crpc->crp_status = error;
308
309 spin_unlock(&rpc->crpc_lock);
310
311 sfw_abort_rpc(rpc);
312
313 if (error != ETIMEDOUT)
314 continue;
315
316 nd = crpc->crp_node;
317 if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
318 continue;
319
320 nd->nd_stamp = crpc->crp_stamp;
321 nd->nd_state = LST_NODE_DOWN;
322 }
323 }
324
325 static int
lstcon_rpc_trans_check(lstcon_rpc_trans_t * trans)326 lstcon_rpc_trans_check(lstcon_rpc_trans_t *trans)
327 {
328 if (console_session.ses_shutdown &&
329 !list_empty(&trans->tas_olink)) /* Not an end session RPC */
330 return 1;
331
332 return (atomic_read(&trans->tas_remaining) == 0) ? 1 : 0;
333 }
334
335 int
lstcon_rpc_trans_postwait(lstcon_rpc_trans_t * trans,int timeout)336 lstcon_rpc_trans_postwait(lstcon_rpc_trans_t *trans, int timeout)
337 {
338 lstcon_rpc_t *crpc;
339 int rc;
340
341 if (list_empty(&trans->tas_rpcs_list))
342 return 0;
343
344 if (timeout < LST_TRANS_MIN_TIMEOUT)
345 timeout = LST_TRANS_MIN_TIMEOUT;
346
347 CDEBUG(D_NET, "Transaction %s started\n",
348 lstcon_rpc_trans_name(trans->tas_opc));
349
350 /* post all requests */
351 list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
352 LASSERT(!crpc->crp_posted);
353
354 lstcon_rpc_post(crpc);
355 }
356
357 mutex_unlock(&console_session.ses_mutex);
358
359 rc = wait_event_interruptible_timeout(trans->tas_waitq,
360 lstcon_rpc_trans_check(trans),
361 cfs_time_seconds(timeout));
362 rc = (rc > 0) ? 0 : ((rc < 0) ? -EINTR : -ETIMEDOUT);
363
364 mutex_lock(&console_session.ses_mutex);
365
366 if (console_session.ses_shutdown)
367 rc = -ESHUTDOWN;
368
369 if (rc != 0 || atomic_read(&trans->tas_remaining) != 0) {
370 /* treat short timeout as canceled */
371 if (rc == -ETIMEDOUT && timeout < LST_TRANS_MIN_TIMEOUT * 2)
372 rc = -EINTR;
373
374 lstcon_rpc_trans_abort(trans, rc);
375 }
376
377 CDEBUG(D_NET, "Transaction %s stopped: %d\n",
378 lstcon_rpc_trans_name(trans->tas_opc), rc);
379
380 lstcon_rpc_trans_stat(trans, lstcon_trans_stat());
381
382 return rc;
383 }
384
385 static int
lstcon_rpc_get_reply(lstcon_rpc_t * crpc,srpc_msg_t ** msgpp)386 lstcon_rpc_get_reply(lstcon_rpc_t *crpc, srpc_msg_t **msgpp)
387 {
388 lstcon_node_t *nd = crpc->crp_node;
389 srpc_client_rpc_t *rpc = crpc->crp_rpc;
390 srpc_generic_reply_t *rep;
391
392 LASSERT(nd != NULL && rpc != NULL);
393 LASSERT(crpc->crp_stamp != 0);
394
395 if (crpc->crp_status != 0) {
396 *msgpp = NULL;
397 return crpc->crp_status;
398 }
399
400 *msgpp = &rpc->crpc_replymsg;
401 if (!crpc->crp_unpacked) {
402 sfw_unpack_message(*msgpp);
403 crpc->crp_unpacked = 1;
404 }
405
406 if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
407 return 0;
408
409 nd->nd_stamp = crpc->crp_stamp;
410 rep = &(*msgpp)->msg_body.reply;
411
412 if (rep->sid.ses_nid == LNET_NID_ANY)
413 nd->nd_state = LST_NODE_UNKNOWN;
414 else if (lstcon_session_match(rep->sid))
415 nd->nd_state = LST_NODE_ACTIVE;
416 else
417 nd->nd_state = LST_NODE_BUSY;
418
419 return 0;
420 }
421
422 void
lstcon_rpc_trans_stat(lstcon_rpc_trans_t * trans,lstcon_trans_stat_t * stat)423 lstcon_rpc_trans_stat(lstcon_rpc_trans_t *trans, lstcon_trans_stat_t *stat)
424 {
425 lstcon_rpc_t *crpc;
426 srpc_msg_t *rep;
427 int error;
428
429 LASSERT(stat != NULL);
430
431 memset(stat, 0, sizeof(*stat));
432
433 list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
434 lstcon_rpc_stat_total(stat, 1);
435
436 LASSERT(crpc->crp_stamp != 0);
437
438 error = lstcon_rpc_get_reply(crpc, &rep);
439 if (error != 0) {
440 lstcon_rpc_stat_failure(stat, 1);
441 if (stat->trs_rpc_errno == 0)
442 stat->trs_rpc_errno = -error;
443
444 continue;
445 }
446
447 lstcon_rpc_stat_success(stat, 1);
448
449 lstcon_rpc_stat_reply(trans, rep, crpc->crp_node, stat);
450 }
451
452 if (trans->tas_opc == LST_TRANS_SESNEW && stat->trs_fwk_errno == 0) {
453 stat->trs_fwk_errno =
454 lstcon_session_feats_check(trans->tas_features);
455 }
456
457 CDEBUG(D_NET, "transaction %s : success %d, failure %d, total %d, RPC error(%d), Framework error(%d)\n",
458 lstcon_rpc_trans_name(trans->tas_opc),
459 lstcon_rpc_stat_success(stat, 0),
460 lstcon_rpc_stat_failure(stat, 0),
461 lstcon_rpc_stat_total(stat, 0),
462 stat->trs_rpc_errno, stat->trs_fwk_errno);
463
464 return;
465 }
466
467 int
lstcon_rpc_trans_interpreter(lstcon_rpc_trans_t * trans,struct list_head * head_up,lstcon_rpc_readent_func_t readent)468 lstcon_rpc_trans_interpreter(lstcon_rpc_trans_t *trans,
469 struct list_head *head_up,
470 lstcon_rpc_readent_func_t readent)
471 {
472 struct list_head tmp;
473 struct list_head *next;
474 lstcon_rpc_ent_t *ent;
475 srpc_generic_reply_t *rep;
476 lstcon_rpc_t *crpc;
477 srpc_msg_t *msg;
478 lstcon_node_t *nd;
479 long dur;
480 struct timeval tv;
481 int error;
482
483 LASSERT(head_up != NULL);
484
485 next = head_up;
486
487 list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
488 if (copy_from_user(&tmp, next,
489 sizeof(struct list_head)))
490 return -EFAULT;
491
492 if (tmp.next == head_up)
493 return 0;
494
495 next = tmp.next;
496
497 ent = list_entry(next, lstcon_rpc_ent_t, rpe_link);
498
499 LASSERT(crpc->crp_stamp != 0);
500
501 error = lstcon_rpc_get_reply(crpc, &msg);
502
503 nd = crpc->crp_node;
504
505 dur = (long)cfs_time_sub(crpc->crp_stamp,
506 (unsigned long)console_session.ses_id.ses_stamp);
507 jiffies_to_timeval(dur, &tv);
508
509 if (copy_to_user(&ent->rpe_peer,
510 &nd->nd_id, sizeof(lnet_process_id_t)) ||
511 copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
512 copy_to_user(&ent->rpe_state,
513 &nd->nd_state, sizeof(nd->nd_state)) ||
514 copy_to_user(&ent->rpe_rpc_errno, &error,
515 sizeof(error)))
516 return -EFAULT;
517
518 if (error != 0)
519 continue;
520
521 /* RPC is done */
522 rep = (srpc_generic_reply_t *)&msg->msg_body.reply;
523
524 if (copy_to_user(&ent->rpe_sid,
525 &rep->sid, sizeof(lst_sid_t)) ||
526 copy_to_user(&ent->rpe_fwk_errno,
527 &rep->status, sizeof(rep->status)))
528 return -EFAULT;
529
530 if (readent == NULL)
531 continue;
532
533 error = readent(trans->tas_opc, msg, ent);
534
535 if (error != 0)
536 return error;
537 }
538
539 return 0;
540 }
541
542 void
lstcon_rpc_trans_destroy(lstcon_rpc_trans_t * trans)543 lstcon_rpc_trans_destroy(lstcon_rpc_trans_t *trans)
544 {
545 srpc_client_rpc_t *rpc;
546 lstcon_rpc_t *crpc;
547 lstcon_rpc_t *tmp;
548 int count = 0;
549
550 list_for_each_entry_safe(crpc, tmp, &trans->tas_rpcs_list,
551 crp_link) {
552 rpc = crpc->crp_rpc;
553
554 spin_lock(&rpc->crpc_lock);
555
556 /* free it if not posted or finished already */
557 if (!crpc->crp_posted || crpc->crp_finished) {
558 spin_unlock(&rpc->crpc_lock);
559
560 list_del_init(&crpc->crp_link);
561 lstcon_rpc_put(crpc);
562
563 continue;
564 }
565
566 /* rpcs can be still not callbacked (even LNetMDUnlink is called)
567 * because huge timeout for inaccessible network, don't make
568 * user wait for them, just abandon them, they will be recycled
569 * in callback */
570
571 LASSERT(crpc->crp_status != 0);
572
573 crpc->crp_node = NULL;
574 crpc->crp_trans = NULL;
575 list_del_init(&crpc->crp_link);
576 count++;
577
578 spin_unlock(&rpc->crpc_lock);
579
580 atomic_dec(&trans->tas_remaining);
581 }
582
583 LASSERT(atomic_read(&trans->tas_remaining) == 0);
584
585 list_del(&trans->tas_link);
586 if (!list_empty(&trans->tas_olink))
587 list_del(&trans->tas_olink);
588
589 CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
590 lstcon_rpc_trans_name(trans->tas_opc), count);
591
592 LIBCFS_FREE(trans, sizeof(*trans));
593
594 return;
595 }
596
597 int
lstcon_sesrpc_prep(lstcon_node_t * nd,int transop,unsigned feats,lstcon_rpc_t ** crpc)598 lstcon_sesrpc_prep(lstcon_node_t *nd, int transop,
599 unsigned feats, lstcon_rpc_t **crpc)
600 {
601 srpc_mksn_reqst_t *msrq;
602 srpc_rmsn_reqst_t *rsrq;
603 int rc;
604
605 switch (transop) {
606 case LST_TRANS_SESNEW:
607 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_MAKE_SESSION,
608 feats, 0, 0, crpc);
609 if (rc != 0)
610 return rc;
611
612 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
613 msrq->mksn_sid = console_session.ses_id;
614 msrq->mksn_force = console_session.ses_force;
615 strncpy(msrq->mksn_name, console_session.ses_name,
616 strlen(console_session.ses_name));
617 break;
618
619 case LST_TRANS_SESEND:
620 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION,
621 feats, 0, 0, crpc);
622 if (rc != 0)
623 return rc;
624
625 rsrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.rmsn_reqst;
626 rsrq->rmsn_sid = console_session.ses_id;
627 break;
628
629 default:
630 LBUG();
631 }
632
633 return 0;
634 }
635
636 int
lstcon_dbgrpc_prep(lstcon_node_t * nd,unsigned feats,lstcon_rpc_t ** crpc)637 lstcon_dbgrpc_prep(lstcon_node_t *nd, unsigned feats, lstcon_rpc_t **crpc)
638 {
639 srpc_debug_reqst_t *drq;
640 int rc;
641
642 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_DEBUG, feats, 0, 0, crpc);
643 if (rc != 0)
644 return rc;
645
646 drq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
647
648 drq->dbg_sid = console_session.ses_id;
649 drq->dbg_flags = 0;
650
651 return rc;
652 }
653
654 int
lstcon_batrpc_prep(lstcon_node_t * nd,int transop,unsigned feats,lstcon_tsb_hdr_t * tsb,lstcon_rpc_t ** crpc)655 lstcon_batrpc_prep(lstcon_node_t *nd, int transop, unsigned feats,
656 lstcon_tsb_hdr_t *tsb, lstcon_rpc_t **crpc)
657 {
658 lstcon_batch_t *batch;
659 srpc_batch_reqst_t *brq;
660 int rc;
661
662 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_BATCH, feats, 0, 0, crpc);
663 if (rc != 0)
664 return rc;
665
666 brq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.bat_reqst;
667
668 brq->bar_sid = console_session.ses_id;
669 brq->bar_bid = tsb->tsb_id;
670 brq->bar_testidx = tsb->tsb_index;
671 brq->bar_opc = transop == LST_TRANS_TSBRUN ? SRPC_BATCH_OPC_RUN :
672 (transop == LST_TRANS_TSBSTOP ? SRPC_BATCH_OPC_STOP :
673 SRPC_BATCH_OPC_QUERY);
674
675 if (transop != LST_TRANS_TSBRUN &&
676 transop != LST_TRANS_TSBSTOP)
677 return 0;
678
679 LASSERT(tsb->tsb_index == 0);
680
681 batch = (lstcon_batch_t *)tsb;
682 brq->bar_arg = batch->bat_arg;
683
684 return 0;
685 }
686
687 int
lstcon_statrpc_prep(lstcon_node_t * nd,unsigned feats,lstcon_rpc_t ** crpc)688 lstcon_statrpc_prep(lstcon_node_t *nd, unsigned feats, lstcon_rpc_t **crpc)
689 {
690 srpc_stat_reqst_t *srq;
691 int rc;
692
693 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_QUERY_STAT, feats, 0, 0, crpc);
694 if (rc != 0)
695 return rc;
696
697 srq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.stat_reqst;
698
699 srq->str_sid = console_session.ses_id;
700 srq->str_type = 0; /* XXX remove it */
701
702 return 0;
703 }
704
705 static lnet_process_id_packed_t *
lstcon_next_id(int idx,int nkiov,lnet_kiov_t * kiov)706 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
707 {
708 lnet_process_id_packed_t *pid;
709 int i;
710
711 i = idx / SFW_ID_PER_PAGE;
712
713 LASSERT(i < nkiov);
714
715 pid = (lnet_process_id_packed_t *)page_address(kiov[i].kiov_page);
716
717 return &pid[idx % SFW_ID_PER_PAGE];
718 }
719
720 static int
lstcon_dstnodes_prep(lstcon_group_t * grp,int idx,int dist,int span,int nkiov,lnet_kiov_t * kiov)721 lstcon_dstnodes_prep(lstcon_group_t *grp, int idx,
722 int dist, int span, int nkiov, lnet_kiov_t *kiov)
723 {
724 lnet_process_id_packed_t *pid;
725 lstcon_ndlink_t *ndl;
726 lstcon_node_t *nd;
727 int start;
728 int end;
729 int i = 0;
730
731 LASSERT(dist >= 1);
732 LASSERT(span >= 1);
733 LASSERT(grp->grp_nnode >= 1);
734
735 if (span > grp->grp_nnode)
736 return -EINVAL;
737
738 start = ((idx / dist) * span) % grp->grp_nnode;
739 end = ((idx / dist) * span + span - 1) % grp->grp_nnode;
740
741 list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
742 nd = ndl->ndl_node;
743 if (i < start) {
744 i++;
745 continue;
746 }
747
748 if (i > (end >= start ? end : grp->grp_nnode))
749 break;
750
751 pid = lstcon_next_id((i - start), nkiov, kiov);
752 pid->nid = nd->nd_id.nid;
753 pid->pid = nd->nd_id.pid;
754 i++;
755 }
756
757 if (start <= end) /* done */
758 return 0;
759
760 list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
761 if (i > grp->grp_nnode + end)
762 break;
763
764 nd = ndl->ndl_node;
765 pid = lstcon_next_id((i - start), nkiov, kiov);
766 pid->nid = nd->nd_id.nid;
767 pid->pid = nd->nd_id.pid;
768 i++;
769 }
770
771 return 0;
772 }
773
774 static int
lstcon_pingrpc_prep(lst_test_ping_param_t * param,srpc_test_reqst_t * req)775 lstcon_pingrpc_prep(lst_test_ping_param_t *param, srpc_test_reqst_t *req)
776 {
777 test_ping_req_t *prq = &req->tsr_u.ping;
778
779 prq->png_size = param->png_size;
780 prq->png_flags = param->png_flags;
781 /* TODO dest */
782 return 0;
783 }
784
785 static int
lstcon_bulkrpc_v0_prep(lst_test_bulk_param_t * param,srpc_test_reqst_t * req)786 lstcon_bulkrpc_v0_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
787 {
788 test_bulk_req_t *brq = &req->tsr_u.bulk_v0;
789
790 brq->blk_opc = param->blk_opc;
791 brq->blk_npg = (param->blk_size + PAGE_CACHE_SIZE - 1) /
792 PAGE_CACHE_SIZE;
793 brq->blk_flags = param->blk_flags;
794
795 return 0;
796 }
797
798 static int
lstcon_bulkrpc_v1_prep(lst_test_bulk_param_t * param,srpc_test_reqst_t * req)799 lstcon_bulkrpc_v1_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
800 {
801 test_bulk_req_v1_t *brq = &req->tsr_u.bulk_v1;
802
803 brq->blk_opc = param->blk_opc;
804 brq->blk_flags = param->blk_flags;
805 brq->blk_len = param->blk_size;
806 brq->blk_offset = 0; /* reserved */
807
808 return 0;
809 }
810
811 int
lstcon_testrpc_prep(lstcon_node_t * nd,int transop,unsigned feats,lstcon_test_t * test,lstcon_rpc_t ** crpc)812 lstcon_testrpc_prep(lstcon_node_t *nd, int transop, unsigned feats,
813 lstcon_test_t *test, lstcon_rpc_t **crpc)
814 {
815 lstcon_group_t *sgrp = test->tes_src_grp;
816 lstcon_group_t *dgrp = test->tes_dst_grp;
817 srpc_test_reqst_t *trq;
818 srpc_bulk_t *bulk;
819 int i;
820 int npg = 0;
821 int nob = 0;
822 int rc = 0;
823
824 if (transop == LST_TRANS_TSBCLIADD) {
825 npg = sfw_id_pages(test->tes_span);
826 nob = (feats & LST_FEAT_BULK_LEN) == 0 ?
827 npg * PAGE_CACHE_SIZE :
828 sizeof(lnet_process_id_packed_t) * test->tes_span;
829 }
830
831 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_TEST, feats, npg, nob, crpc);
832 if (rc != 0)
833 return rc;
834
835 trq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.tes_reqst;
836
837 if (transop == LST_TRANS_TSBSRVADD) {
838 int ndist = (sgrp->grp_nnode + test->tes_dist - 1) /
839 test->tes_dist;
840 int nspan = (dgrp->grp_nnode + test->tes_span - 1) /
841 test->tes_span;
842 int nmax = (ndist + nspan - 1) / nspan;
843
844 trq->tsr_ndest = 0;
845 trq->tsr_loop = nmax * test->tes_dist * test->tes_concur;
846
847 } else {
848 bulk = &(*crpc)->crp_rpc->crpc_bulk;
849
850 for (i = 0; i < npg; i++) {
851 int len;
852
853 LASSERT(nob > 0);
854
855 len = (feats & LST_FEAT_BULK_LEN) == 0 ?
856 PAGE_CACHE_SIZE :
857 min_t(int, nob, PAGE_CACHE_SIZE);
858 nob -= len;
859
860 bulk->bk_iovs[i].kiov_offset = 0;
861 bulk->bk_iovs[i].kiov_len = len;
862 bulk->bk_iovs[i].kiov_page =
863 alloc_page(GFP_KERNEL);
864
865 if (bulk->bk_iovs[i].kiov_page == NULL) {
866 lstcon_rpc_put(*crpc);
867 return -ENOMEM;
868 }
869 }
870
871 bulk->bk_sink = 0;
872
873 LASSERT(transop == LST_TRANS_TSBCLIADD);
874
875 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
876 test->tes_cliidx++,
877 test->tes_dist,
878 test->tes_span,
879 npg, &bulk->bk_iovs[0]);
880 if (rc != 0) {
881 lstcon_rpc_put(*crpc);
882 return rc;
883 }
884
885 trq->tsr_ndest = test->tes_span;
886 trq->tsr_loop = test->tes_loop;
887 }
888
889 trq->tsr_sid = console_session.ses_id;
890 trq->tsr_bid = test->tes_hdr.tsb_id;
891 trq->tsr_concur = test->tes_concur;
892 trq->tsr_is_client = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
893 trq->tsr_stop_onerr = !!test->tes_stop_onerr;
894
895 switch (test->tes_type) {
896 case LST_TEST_PING:
897 trq->tsr_service = SRPC_SERVICE_PING;
898 rc = lstcon_pingrpc_prep((lst_test_ping_param_t *)
899 &test->tes_param[0], trq);
900 break;
901
902 case LST_TEST_BULK:
903 trq->tsr_service = SRPC_SERVICE_BRW;
904 if ((feats & LST_FEAT_BULK_LEN) == 0) {
905 rc = lstcon_bulkrpc_v0_prep((lst_test_bulk_param_t *)
906 &test->tes_param[0], trq);
907 } else {
908 rc = lstcon_bulkrpc_v1_prep((lst_test_bulk_param_t *)
909 &test->tes_param[0], trq);
910 }
911
912 break;
913 default:
914 LBUG();
915 break;
916 }
917
918 return rc;
919 }
920
921 static int
lstcon_sesnew_stat_reply(lstcon_rpc_trans_t * trans,lstcon_node_t * nd,srpc_msg_t * reply)922 lstcon_sesnew_stat_reply(lstcon_rpc_trans_t *trans,
923 lstcon_node_t *nd, srpc_msg_t *reply)
924 {
925 srpc_mksn_reply_t *mksn_rep = &reply->msg_body.mksn_reply;
926 int status = mksn_rep->mksn_status;
927
928 if (status == 0 &&
929 (reply->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
930 mksn_rep->mksn_status = EPROTO;
931 status = EPROTO;
932 }
933
934 if (status == EPROTO) {
935 CNETERR("session protocol error from %s: %u\n",
936 libcfs_nid2str(nd->nd_id.nid),
937 reply->msg_ses_feats);
938 }
939
940 if (status != 0)
941 return status;
942
943 if (!trans->tas_feats_updated) {
944 trans->tas_feats_updated = 1;
945 trans->tas_features = reply->msg_ses_feats;
946 }
947
948 if (reply->msg_ses_feats != trans->tas_features) {
949 CNETERR("Framework features %x from %s is different with features on this transaction: %x\n",
950 reply->msg_ses_feats, libcfs_nid2str(nd->nd_id.nid),
951 trans->tas_features);
952 status = mksn_rep->mksn_status = EPROTO;
953 }
954
955 if (status == 0) {
956 /* session timeout on remote node */
957 nd->nd_timeout = mksn_rep->mksn_timeout;
958 }
959
960 return status;
961 }
962
963 void
lstcon_rpc_stat_reply(lstcon_rpc_trans_t * trans,srpc_msg_t * msg,lstcon_node_t * nd,lstcon_trans_stat_t * stat)964 lstcon_rpc_stat_reply(lstcon_rpc_trans_t *trans, srpc_msg_t *msg,
965 lstcon_node_t *nd, lstcon_trans_stat_t *stat)
966 {
967 srpc_rmsn_reply_t *rmsn_rep;
968 srpc_debug_reply_t *dbg_rep;
969 srpc_batch_reply_t *bat_rep;
970 srpc_test_reply_t *test_rep;
971 srpc_stat_reply_t *stat_rep;
972 int rc = 0;
973
974 switch (trans->tas_opc) {
975 case LST_TRANS_SESNEW:
976 rc = lstcon_sesnew_stat_reply(trans, nd, msg);
977 if (rc == 0) {
978 lstcon_sesop_stat_success(stat, 1);
979 return;
980 }
981
982 lstcon_sesop_stat_failure(stat, 1);
983 break;
984
985 case LST_TRANS_SESEND:
986 rmsn_rep = &msg->msg_body.rmsn_reply;
987 /* ESRCH is not an error for end session */
988 if (rmsn_rep->rmsn_status == 0 ||
989 rmsn_rep->rmsn_status == ESRCH) {
990 lstcon_sesop_stat_success(stat, 1);
991 return;
992 }
993
994 lstcon_sesop_stat_failure(stat, 1);
995 rc = rmsn_rep->rmsn_status;
996 break;
997
998 case LST_TRANS_SESQRY:
999 case LST_TRANS_SESPING:
1000 dbg_rep = &msg->msg_body.dbg_reply;
1001
1002 if (dbg_rep->dbg_status == ESRCH) {
1003 lstcon_sesqry_stat_unknown(stat, 1);
1004 return;
1005 }
1006
1007 if (lstcon_session_match(dbg_rep->dbg_sid))
1008 lstcon_sesqry_stat_active(stat, 1);
1009 else
1010 lstcon_sesqry_stat_busy(stat, 1);
1011 return;
1012
1013 case LST_TRANS_TSBRUN:
1014 case LST_TRANS_TSBSTOP:
1015 bat_rep = &msg->msg_body.bat_reply;
1016
1017 if (bat_rep->bar_status == 0) {
1018 lstcon_tsbop_stat_success(stat, 1);
1019 return;
1020 }
1021
1022 if (bat_rep->bar_status == EPERM &&
1023 trans->tas_opc == LST_TRANS_TSBSTOP) {
1024 lstcon_tsbop_stat_success(stat, 1);
1025 return;
1026 }
1027
1028 lstcon_tsbop_stat_failure(stat, 1);
1029 rc = bat_rep->bar_status;
1030 break;
1031
1032 case LST_TRANS_TSBCLIQRY:
1033 case LST_TRANS_TSBSRVQRY:
1034 bat_rep = &msg->msg_body.bat_reply;
1035
1036 if (bat_rep->bar_active != 0)
1037 lstcon_tsbqry_stat_run(stat, 1);
1038 else
1039 lstcon_tsbqry_stat_idle(stat, 1);
1040
1041 if (bat_rep->bar_status == 0)
1042 return;
1043
1044 lstcon_tsbqry_stat_failure(stat, 1);
1045 rc = bat_rep->bar_status;
1046 break;
1047
1048 case LST_TRANS_TSBCLIADD:
1049 case LST_TRANS_TSBSRVADD:
1050 test_rep = &msg->msg_body.tes_reply;
1051
1052 if (test_rep->tsr_status == 0) {
1053 lstcon_tsbop_stat_success(stat, 1);
1054 return;
1055 }
1056
1057 lstcon_tsbop_stat_failure(stat, 1);
1058 rc = test_rep->tsr_status;
1059 break;
1060
1061 case LST_TRANS_STATQRY:
1062 stat_rep = &msg->msg_body.stat_reply;
1063
1064 if (stat_rep->str_status == 0) {
1065 lstcon_statqry_stat_success(stat, 1);
1066 return;
1067 }
1068
1069 lstcon_statqry_stat_failure(stat, 1);
1070 rc = stat_rep->str_status;
1071 break;
1072
1073 default:
1074 LBUG();
1075 }
1076
1077 if (stat->trs_fwk_errno == 0)
1078 stat->trs_fwk_errno = rc;
1079
1080 return;
1081 }
1082
1083 int
lstcon_rpc_trans_ndlist(struct list_head * ndlist,struct list_head * translist,int transop,void * arg,lstcon_rpc_cond_func_t condition,lstcon_rpc_trans_t ** transpp)1084 lstcon_rpc_trans_ndlist(struct list_head *ndlist,
1085 struct list_head *translist, int transop,
1086 void *arg, lstcon_rpc_cond_func_t condition,
1087 lstcon_rpc_trans_t **transpp)
1088 {
1089 lstcon_rpc_trans_t *trans;
1090 lstcon_ndlink_t *ndl;
1091 lstcon_node_t *nd;
1092 lstcon_rpc_t *rpc;
1093 unsigned feats;
1094 int rc;
1095
1096 /* Creating session RPG for list of nodes */
1097
1098 rc = lstcon_rpc_trans_prep(translist, transop, &trans);
1099 if (rc != 0) {
1100 CERROR("Can't create transaction %d: %d\n", transop, rc);
1101 return rc;
1102 }
1103
1104 feats = trans->tas_features;
1105 list_for_each_entry(ndl, ndlist, ndl_link) {
1106 rc = condition == NULL ? 1 :
1107 condition(transop, ndl->ndl_node, arg);
1108
1109 if (rc == 0)
1110 continue;
1111
1112 if (rc < 0) {
1113 CDEBUG(D_NET, "Condition error while creating RPC for transaction %d: %d\n",
1114 transop, rc);
1115 break;
1116 }
1117
1118 nd = ndl->ndl_node;
1119
1120 switch (transop) {
1121 case LST_TRANS_SESNEW:
1122 case LST_TRANS_SESEND:
1123 rc = lstcon_sesrpc_prep(nd, transop, feats, &rpc);
1124 break;
1125 case LST_TRANS_SESQRY:
1126 case LST_TRANS_SESPING:
1127 rc = lstcon_dbgrpc_prep(nd, feats, &rpc);
1128 break;
1129 case LST_TRANS_TSBCLIADD:
1130 case LST_TRANS_TSBSRVADD:
1131 rc = lstcon_testrpc_prep(nd, transop, feats,
1132 (lstcon_test_t *)arg, &rpc);
1133 break;
1134 case LST_TRANS_TSBRUN:
1135 case LST_TRANS_TSBSTOP:
1136 case LST_TRANS_TSBCLIQRY:
1137 case LST_TRANS_TSBSRVQRY:
1138 rc = lstcon_batrpc_prep(nd, transop, feats,
1139 (lstcon_tsb_hdr_t *)arg, &rpc);
1140 break;
1141 case LST_TRANS_STATQRY:
1142 rc = lstcon_statrpc_prep(nd, feats, &rpc);
1143 break;
1144 default:
1145 rc = -EINVAL;
1146 break;
1147 }
1148
1149 if (rc != 0) {
1150 CERROR("Failed to create RPC for transaction %s: %d\n",
1151 lstcon_rpc_trans_name(transop), rc);
1152 break;
1153 }
1154
1155 lstcon_rpc_trans_addreq(trans, rpc);
1156 }
1157
1158 if (rc == 0) {
1159 *transpp = trans;
1160 return 0;
1161 }
1162
1163 lstcon_rpc_trans_destroy(trans);
1164
1165 return rc;
1166 }
1167
1168 static void
lstcon_rpc_pinger(void * arg)1169 lstcon_rpc_pinger(void *arg)
1170 {
1171 stt_timer_t *ptimer = (stt_timer_t *)arg;
1172 lstcon_rpc_trans_t *trans;
1173 lstcon_rpc_t *crpc;
1174 srpc_msg_t *rep;
1175 srpc_debug_reqst_t *drq;
1176 lstcon_ndlink_t *ndl;
1177 lstcon_node_t *nd;
1178 int intv;
1179 int count = 0;
1180 int rc;
1181
1182 /* RPC pinger is a special case of transaction,
1183 * it's called by timer at 8 seconds interval.
1184 */
1185 mutex_lock(&console_session.ses_mutex);
1186
1187 if (console_session.ses_shutdown || console_session.ses_expired) {
1188 mutex_unlock(&console_session.ses_mutex);
1189 return;
1190 }
1191
1192 if (!console_session.ses_expired &&
1193 ktime_get_real_seconds() - console_session.ses_laststamp >
1194 (time64_t)console_session.ses_timeout)
1195 console_session.ses_expired = 1;
1196
1197 trans = console_session.ses_ping;
1198
1199 LASSERT(trans != NULL);
1200
1201 list_for_each_entry(ndl, &console_session.ses_ndl_list, ndl_link) {
1202 nd = ndl->ndl_node;
1203
1204 if (console_session.ses_expired) {
1205 /* idle console, end session on all nodes */
1206 if (nd->nd_state != LST_NODE_ACTIVE)
1207 continue;
1208
1209 rc = lstcon_sesrpc_prep(nd, LST_TRANS_SESEND,
1210 trans->tas_features, &crpc);
1211 if (rc != 0) {
1212 CERROR("Out of memory\n");
1213 break;
1214 }
1215
1216 lstcon_rpc_trans_addreq(trans, crpc);
1217 lstcon_rpc_post(crpc);
1218
1219 continue;
1220 }
1221
1222 crpc = &nd->nd_ping;
1223
1224 if (crpc->crp_rpc != NULL) {
1225 LASSERT(crpc->crp_trans == trans);
1226 LASSERT(!list_empty(&crpc->crp_link));
1227
1228 spin_lock(&crpc->crp_rpc->crpc_lock);
1229
1230 LASSERT(crpc->crp_posted);
1231
1232 if (!crpc->crp_finished) {
1233 /* in flight */
1234 spin_unlock(&crpc->crp_rpc->crpc_lock);
1235 continue;
1236 }
1237
1238 spin_unlock(&crpc->crp_rpc->crpc_lock);
1239
1240 lstcon_rpc_get_reply(crpc, &rep);
1241
1242 list_del_init(&crpc->crp_link);
1243
1244 lstcon_rpc_put(crpc);
1245 }
1246
1247 if (nd->nd_state != LST_NODE_ACTIVE)
1248 continue;
1249
1250 intv = (jiffies - nd->nd_stamp) / HZ;
1251 if (intv < nd->nd_timeout / 2)
1252 continue;
1253
1254 rc = lstcon_rpc_init(nd, SRPC_SERVICE_DEBUG,
1255 trans->tas_features, 0, 0, 1, crpc);
1256 if (rc != 0) {
1257 CERROR("Out of memory\n");
1258 break;
1259 }
1260
1261 drq = &crpc->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
1262
1263 drq->dbg_sid = console_session.ses_id;
1264 drq->dbg_flags = 0;
1265
1266 lstcon_rpc_trans_addreq(trans, crpc);
1267 lstcon_rpc_post(crpc);
1268
1269 count++;
1270 }
1271
1272 if (console_session.ses_expired) {
1273 mutex_unlock(&console_session.ses_mutex);
1274 return;
1275 }
1276
1277 CDEBUG(D_NET, "Ping %d nodes in session\n", count);
1278
1279 ptimer->stt_expires = ktime_get_real_seconds() + LST_PING_INTERVAL;
1280 stt_add_timer(ptimer);
1281
1282 mutex_unlock(&console_session.ses_mutex);
1283 }
1284
1285 int
lstcon_rpc_pinger_start(void)1286 lstcon_rpc_pinger_start(void)
1287 {
1288 stt_timer_t *ptimer;
1289 int rc;
1290
1291 LASSERT(list_empty(&console_session.ses_rpc_freelist));
1292 LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1293
1294 rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1295 &console_session.ses_ping);
1296 if (rc != 0) {
1297 CERROR("Failed to create console pinger\n");
1298 return rc;
1299 }
1300
1301 ptimer = &console_session.ses_ping_timer;
1302 ptimer->stt_expires = ktime_get_real_seconds() + LST_PING_INTERVAL;
1303
1304 stt_add_timer(ptimer);
1305
1306 return 0;
1307 }
1308
1309 void
lstcon_rpc_pinger_stop(void)1310 lstcon_rpc_pinger_stop(void)
1311 {
1312 LASSERT(console_session.ses_shutdown);
1313
1314 stt_del_timer(&console_session.ses_ping_timer);
1315
1316 lstcon_rpc_trans_abort(console_session.ses_ping, -ESHUTDOWN);
1317 lstcon_rpc_trans_stat(console_session.ses_ping, lstcon_trans_stat());
1318 lstcon_rpc_trans_destroy(console_session.ses_ping);
1319
1320 memset(lstcon_trans_stat(), 0, sizeof(lstcon_trans_stat_t));
1321
1322 console_session.ses_ping = NULL;
1323 }
1324
1325 void
lstcon_rpc_cleanup_wait(void)1326 lstcon_rpc_cleanup_wait(void)
1327 {
1328 lstcon_rpc_trans_t *trans;
1329 lstcon_rpc_t *crpc;
1330 struct list_head *pacer;
1331 struct list_head zlist;
1332
1333 /* Called with hold of global mutex */
1334
1335 LASSERT(console_session.ses_shutdown);
1336
1337 while (!list_empty(&console_session.ses_trans_list)) {
1338 list_for_each(pacer, &console_session.ses_trans_list) {
1339 trans = list_entry(pacer, lstcon_rpc_trans_t,
1340 tas_link);
1341
1342 CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1343 lstcon_rpc_trans_name(trans->tas_opc));
1344
1345 wake_up(&trans->tas_waitq);
1346 }
1347
1348 mutex_unlock(&console_session.ses_mutex);
1349
1350 CWARN("Session is shutting down, waiting for termination of transactions\n");
1351 set_current_state(TASK_UNINTERRUPTIBLE);
1352 schedule_timeout(cfs_time_seconds(1));
1353
1354 mutex_lock(&console_session.ses_mutex);
1355 }
1356
1357 spin_lock(&console_session.ses_rpc_lock);
1358
1359 lst_wait_until((atomic_read(&console_session.ses_rpc_counter) == 0),
1360 console_session.ses_rpc_lock,
1361 "Network is not accessible or target is down, waiting for %d console RPCs to being recycled\n",
1362 atomic_read(&console_session.ses_rpc_counter));
1363
1364 list_add(&zlist, &console_session.ses_rpc_freelist);
1365 list_del_init(&console_session.ses_rpc_freelist);
1366
1367 spin_unlock(&console_session.ses_rpc_lock);
1368
1369 while (!list_empty(&zlist)) {
1370 crpc = list_entry(zlist.next, lstcon_rpc_t, crp_link);
1371
1372 list_del(&crpc->crp_link);
1373 LIBCFS_FREE(crpc, sizeof(lstcon_rpc_t));
1374 }
1375 }
1376
1377 int
lstcon_rpc_module_init(void)1378 lstcon_rpc_module_init(void)
1379 {
1380 INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1381 console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1382 console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1383
1384 console_session.ses_ping = NULL;
1385
1386 spin_lock_init(&console_session.ses_rpc_lock);
1387 atomic_set(&console_session.ses_rpc_counter, 0);
1388 INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1389
1390 return 0;
1391 }
1392
1393 void
lstcon_rpc_module_fini(void)1394 lstcon_rpc_module_fini(void)
1395 {
1396 LASSERT(list_empty(&console_session.ses_rpc_freelist));
1397 LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1398 }
1399