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