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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2016, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lnet/selftest/conctl.c
  33  *
  34  * Console framework rpcs
  35  *
  36  * Author: Liang Zhen <liang@whamcloud.com>
  37  */
  38
  39
  40 #include <libcfs/libcfs.h>
  41 #include <lnet/lib-lnet.h>
  42 #include "timer.h"
  43 #include "conrpc.h"
  44 #include "console.h"
  45
  46 void lstcon_rpc_stat_reply(struct lstcon_rpc_trans *, struct srpc_msg *,
  47                            struct lstcon_node *, struct lstcon_trans_stat *);
  48
  49 static void
  50 lstcon_rpc_done(struct srpc_client_rpc *rpc)
  51 {
  52         struct lstcon_rpc *crpc = rpc->crpc_priv;
  53
  54         LASSERT(crpc != NULL && rpc == crpc->crp_rpc);
  55         LASSERT(crpc->crp_posted && !crpc->crp_finished);
  56
  57         spin_lock(&rpc->crpc_lock);
  58
  59         if (crpc->crp_trans == NULL) {
  60                 /* Orphan RPC is not in any transaction,
  61                  * I'm just a poor body and nobody loves me */
  62                 spin_unlock(&rpc->crpc_lock);
  63
  64                 /* release it */
  65                 lstcon_rpc_put(crpc);
  66                 return;
  67         }
  68
  69         /* not an orphan RPC */
  70         crpc->crp_finished = 1;
  71
  72         if (crpc->crp_stamp_ns == 0) {
  73                 /* not aborted */
  74                 LASSERT(crpc->crp_status == 0);
  75
  76                 crpc->crp_stamp_ns = ktime_get_ns();
  77                 crpc->crp_status = rpc->crpc_status;
  78         }
  79
  80         /* wakeup (transaction)thread if I'm the last RPC in the transaction */
  81         if (atomic_dec_and_test(&crpc->crp_trans->tas_remaining))
  82                 wake_up(&crpc->crp_trans->tas_waitq);
  83
  84         spin_unlock(&rpc->crpc_lock);
  85 }
  86
  87 static int
  88 lstcon_rpc_init(struct lstcon_node *nd, int service, unsigned int feats,
  89                 int bulk_npg, int bulk_len, int embedded,
  90                 struct lstcon_rpc *crpc)
  91 {
  92         memset(crpc, 0, sizeof(*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_node     = nd;
 101         crpc->crp_embedded = embedded;
 102         INIT_LIST_HEAD(&crpc->crp_link);
 103
 104         atomic_inc(&console_session.ses_rpc_counter);
 105
 106         return 0;
 107 }
 108
 109 static int
 110 lstcon_rpc_prep(struct lstcon_node *nd, int service, unsigned int feats,
 111                 int bulk_npg, int bulk_len, struct lstcon_rpc **crpcpp)
 112 {
 113         struct lstcon_rpc *crpc = NULL;
 114         int rc;
 115
 116         spin_lock(&console_session.ses_rpc_lock);
 117
 118         if (!list_empty(&console_session.ses_rpc_freelist)) {
 119                 crpc = list_entry(console_session.ses_rpc_freelist.next,
 120                                   struct lstcon_rpc, crp_link);
 121                 list_del_init(&crpc->crp_link);
 122         }
 123
 124         spin_unlock(&console_session.ses_rpc_lock);
 125
 126         if (crpc == NULL) {
 127                 LIBCFS_ALLOC(crpc, sizeof(*crpc));
 128                 if (crpc == NULL)
 129                         return -ENOMEM;
 130         }
 131
 132         rc = lstcon_rpc_init(nd, service, feats, bulk_npg, bulk_len, 0, crpc);
 133         if (rc == 0) {
 134                 *crpcpp = crpc;
 135                 return 0;
 136         }
 137
 138         LIBCFS_FREE(crpc, sizeof(*crpc));
 139
 140         return rc;
 141 }
 142
 143 void
 144 lstcon_rpc_put(struct lstcon_rpc *crpc)
 145 {
 146         struct srpc_bulk *bulk = &crpc->crp_rpc->crpc_bulk;
 147         int i;
 148
 149         LASSERT(list_empty(&crpc->crp_link));
 150
 151         for (i = 0; i < bulk->bk_niov; i++) {
 152                 if (bulk->bk_iovs[i].kiov_page == NULL)
 153                         continue;
 154
 155                 __free_page(bulk->bk_iovs[i].kiov_page);
 156         }
 157
 158         srpc_client_rpc_decref(crpc->crp_rpc);
 159
 160         if (crpc->crp_embedded) {
 161                 /* embedded RPC, don't recycle it */
 162                 memset(crpc, 0, sizeof(*crpc));
 163                 crpc->crp_embedded = 1;
 164
 165         } else {
 166                 spin_lock(&console_session.ses_rpc_lock);
 167
 168                 list_add(&crpc->crp_link,
 169                          &console_session.ses_rpc_freelist);
 170
 171                 spin_unlock(&console_session.ses_rpc_lock);
 172         }
 173
 174         /* RPC is not alive now */
 175         atomic_dec(&console_session.ses_rpc_counter);
 176 }
 177
 178 static void
 179 lstcon_rpc_post(struct lstcon_rpc *crpc)
 180 {
 181         struct lstcon_rpc_trans *trans = crpc->crp_trans;
 182
 183         LASSERT (trans != NULL);
 184
 185         atomic_inc(&trans->tas_remaining);
 186         crpc->crp_posted = 1;
 187
 188         sfw_post_rpc(crpc->crp_rpc);
 189 }
 190
 191 static char *
 192 lstcon_rpc_trans_name(int transop)
 193 {
 194         if (transop == LST_TRANS_SESNEW)
 195                 return "SESNEW";
 196
 197         if (transop == LST_TRANS_SESEND)
 198                 return "SESEND";
 199
 200         if (transop == LST_TRANS_SESQRY)
 201                 return "SESQRY";
 202
 203         if (transop == LST_TRANS_SESPING)
 204                 return "SESPING";
 205
 206         if (transop == LST_TRANS_TSBCLIADD)
 207                 return "TSBCLIADD";
 208
 209         if (transop == LST_TRANS_TSBSRVADD)
 210                 return "TSBSRVADD";
 211
 212         if (transop == LST_TRANS_TSBRUN)
 213                 return "TSBRUN";
 214
 215         if (transop == LST_TRANS_TSBSTOP)
 216                 return "TSBSTOP";
 217
 218         if (transop == LST_TRANS_TSBCLIQRY)
 219                 return "TSBCLIQRY";
 220
 221         if (transop == LST_TRANS_TSBSRVQRY)
 222                 return "TSBSRVQRY";
 223
 224         if (transop == LST_TRANS_STATQRY)
 225                 return "STATQRY";
 226
 227         return "Unknown";
 228 }
 229
 230 int
 231 lstcon_rpc_trans_prep(struct list_head *translist, int transop,
 232                       struct lstcon_rpc_trans **transpp)
 233 {
 234         struct lstcon_rpc_trans *trans;
 235
 236         if (translist != NULL) {
 237                 list_for_each_entry(trans, translist, tas_link) {
 238                         /* Can't enqueue two private transaction on
 239                          * the same object */
 240                         if ((trans->tas_opc & transop) == LST_TRANS_PRIVATE)
 241                                 return -EPERM;
 242                 }
 243         }
 244
 245         /* create a trans group */
 246         LIBCFS_ALLOC(trans, sizeof(*trans));
 247         if (trans == NULL)
 248                 return -ENOMEM;
 249
 250         trans->tas_opc = transop;
 251
 252         if (translist == NULL)
 253                 INIT_LIST_HEAD(&trans->tas_olink);
 254         else
 255                 list_add_tail(&trans->tas_olink, translist);
 256
 257         list_add_tail(&trans->tas_link, &console_session.ses_trans_list);
 258
 259         INIT_LIST_HEAD(&trans->tas_rpcs_list);
 260         atomic_set(&trans->tas_remaining, 0);
 261         init_waitqueue_head(&trans->tas_waitq);
 262
 263         spin_lock(&console_session.ses_rpc_lock);
 264         trans->tas_features = console_session.ses_features;
 265         spin_unlock(&console_session.ses_rpc_lock);
 266
 267         *transpp = trans;
 268         return 0;
 269 }
 270
 271 void
 272 lstcon_rpc_trans_addreq(struct lstcon_rpc_trans *trans, struct lstcon_rpc *crpc)
 273 {
 274         list_add_tail(&crpc->crp_link, &trans->tas_rpcs_list);
 275         crpc->crp_trans = trans;
 276 }
 277
 278 void
 279 lstcon_rpc_trans_abort(struct lstcon_rpc_trans *trans, int error)
 280 {
 281         struct srpc_client_rpc *rpc;
 282         struct lstcon_rpc *crpc;
 283         struct lstcon_node *nd;
 284
 285         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 286                 rpc = crpc->crp_rpc;
 287
 288                 spin_lock(&rpc->crpc_lock);
 289
 290                 if (!crpc->crp_posted || /* not posted */
 291                     crpc->crp_stamp_ns != 0) { /* rpc done or aborted already */
 292                         if (crpc->crp_stamp_ns == 0) {
 293                                 crpc->crp_stamp_ns = ktime_get_ns();
 294                                 crpc->crp_status = -EINTR;
 295                         }
 296                         spin_unlock(&rpc->crpc_lock);
 297                         continue;
 298                 }
 299
 300                 crpc->crp_stamp_ns  = ktime_get_ns();
 301                 crpc->crp_status = error;
 302
 303                 spin_unlock(&rpc->crpc_lock);
 304
 305                 sfw_abort_rpc(rpc);
 306
 307                 if (error != -ETIMEDOUT)
 308                         continue;
 309
 310                 nd = crpc->crp_node;
 311                 if (ktime_to_ns(nd->nd_stamp) > crpc->crp_stamp_ns)
 312                         continue;
 313
 314                 nd->nd_stamp = ktime_set(0, crpc->crp_stamp_ns);
 315                 nd->nd_state = LST_NODE_DOWN;
 316         }
 317 }
 318
 319 static int
 320 lstcon_rpc_trans_check(struct lstcon_rpc_trans *trans)
 321 {
 322         if (console_session.ses_shutdown &&
 323             !list_empty(&trans->tas_olink)) /* Not an end session RPC */
 324                 return 1;
 325
 326         return (atomic_read(&trans->tas_remaining) == 0) ? 1: 0;
 327 }
 328
 329 int
 330 lstcon_rpc_trans_postwait(struct lstcon_rpc_trans *trans, int timeout)
 331 {
 332         struct lstcon_rpc *crpc;
 333         int rc;
 334
 335         if (list_empty(&trans->tas_rpcs_list))
 336                 return 0;
 337
 338         if (timeout < LST_TRANS_MIN_TIMEOUT)
 339                 timeout = LST_TRANS_MIN_TIMEOUT;
 340
 341         CDEBUG(D_NET, "Transaction %s started\n",
 342         lstcon_rpc_trans_name(trans->tas_opc));
 343
 344         /* post all requests */
 345         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 346                 LASSERT(!crpc->crp_posted);
 347
 348                 lstcon_rpc_post(crpc);
 349         }
 350
 351         mutex_unlock(&console_session.ses_mutex);
 352
 353         rc = wait_event_interruptible_timeout(trans->tas_waitq,
 354                                               lstcon_rpc_trans_check(trans),
 355                                               cfs_time_seconds(timeout));
 356
 357         rc = (rc > 0)? 0: ((rc < 0)? -EINTR: -ETIMEDOUT);
 358
 359         mutex_lock(&console_session.ses_mutex);
 360
 361         if (console_session.ses_shutdown)
 362                 rc = -ESHUTDOWN;
 363
 364         if (rc != 0 || atomic_read(&trans->tas_remaining) != 0) {
 365                 /* treat short timeout as canceled */
 366                 if (rc == -ETIMEDOUT && timeout < LST_TRANS_MIN_TIMEOUT * 2)
 367                         rc = -EINTR;
 368
 369                 lstcon_rpc_trans_abort(trans, rc);
 370         }
 371
 372         CDEBUG(D_NET, "Transaction %s stopped: %d\n",
 373                lstcon_rpc_trans_name(trans->tas_opc), rc);
 374
 375         lstcon_rpc_trans_stat(trans, lstcon_trans_stat());
 376
 377         return rc;
 378 }
 379
 380 static int
 381 lstcon_rpc_get_reply(struct lstcon_rpc *crpc, struct srpc_msg **msgpp)
 382 {
 383         struct lstcon_node *nd = crpc->crp_node;
 384         struct srpc_client_rpc *rpc = crpc->crp_rpc;
 385         struct srpc_generic_reply *rep;
 386
 387         LASSERT(nd != NULL && rpc != NULL);
 388         LASSERT(crpc->crp_stamp_ns != 0);
 389
 390         if (crpc->crp_status != 0) {
 391                 *msgpp = NULL;
 392                 return crpc->crp_status;
 393         }
 394
 395         *msgpp = &rpc->crpc_replymsg;
 396         if (!crpc->crp_unpacked) {
 397                 sfw_unpack_message(*msgpp);
 398                 crpc->crp_unpacked = 1;
 399         }
 400
 401         if (ktime_to_ns(nd->nd_stamp) > crpc->crp_stamp_ns)
 402                 return 0;
 403
 404         nd->nd_stamp = ktime_set(0, crpc->crp_stamp_ns);
 405         rep = &(*msgpp)->msg_body.reply;
 406
 407         if (rep->sid.ses_nid == LNET_NID_ANY)
 408                 nd->nd_state = LST_NODE_UNKNOWN;
 409         else if (lstcon_session_match(rep->sid))
 410                 nd->nd_state = LST_NODE_ACTIVE;
 411         else
 412                 nd->nd_state = LST_NODE_BUSY;
 413
 414         return 0;
 415 }
 416
 417 void
 418 lstcon_rpc_trans_stat(struct lstcon_rpc_trans *trans,
 419                       struct lstcon_trans_stat *stat)
 420 {
 421         struct lstcon_rpc *crpc;
 422         struct srpc_msg *rep;
 423         int error;
 424
 425         LASSERT(stat != NULL);
 426
 427         memset(stat, 0, sizeof(*stat));
 428
 429         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 430                 lstcon_rpc_stat_total(stat, 1);
 431
 432                 LASSERT(crpc->crp_stamp_ns != 0);
 433
 434                 error = lstcon_rpc_get_reply(crpc, &rep);
 435                 if (error != 0) {
 436                         lstcon_rpc_stat_failure(stat, 1);
 437                         if (stat->trs_rpc_errno == 0)
 438                                 stat->trs_rpc_errno = -error;
 439
 440                         continue;
 441                 }
 442
 443                 lstcon_rpc_stat_success(stat, 1);
 444
 445                 lstcon_rpc_stat_reply(trans, rep, crpc->crp_node, stat);
 446         }
 447
 448         if (trans->tas_opc == LST_TRANS_SESNEW && stat->trs_fwk_errno == 0) {
 449                 stat->trs_fwk_errno =
 450                       lstcon_session_feats_check(trans->tas_features);
 451         }
 452
 453         CDEBUG(D_NET, "transaction %s : success %d, failure %d, total %d, "
 454                       "RPC error(%d), Framework error(%d)\n",
 455                lstcon_rpc_trans_name(trans->tas_opc),
 456                lstcon_rpc_stat_success(stat, 0),
 457                lstcon_rpc_stat_failure(stat, 0),
 458                lstcon_rpc_stat_total(stat, 0),
 459                stat->trs_rpc_errno, stat->trs_fwk_errno);
 460
 461         return;
 462 }
 463
 464 int
 465 lstcon_rpc_trans_interpreter(struct lstcon_rpc_trans *trans,
 466                              struct list_head __user *head_up,
 467                              lstcon_rpc_readent_func_t readent)
 468 {
 469         struct list_head tmp;
 470         struct list_head __user *next;
 471         struct lstcon_rpc_ent *ent;
 472         struct srpc_generic_reply *rep;
 473         struct lstcon_rpc *crpc;
 474         struct srpc_msg *msg;
 475         struct lstcon_node *nd;
 476         struct timeval tv;
 477         int error;
 478         s64 dur;
 479
 480         LASSERT(head_up != NULL);
 481
 482         next = head_up;
 483
 484         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 485                 if (copy_from_user(&tmp, next,
 486                                    sizeof(struct list_head)))
 487                         return -EFAULT;
 488
 489                 if (tmp.next == head_up)
 490                         return 0;
 491
 492                 next = tmp.next;
 493
 494                 ent = list_entry(next, struct lstcon_rpc_ent, rpe_link);
 495
 496                 LASSERT(crpc->crp_stamp_ns != 0);
 497
 498                 error = lstcon_rpc_get_reply(crpc, &msg);
 499
 500                 nd = crpc->crp_node;
 501
 502                 dur = crpc->crp_stamp_ns -
 503                       console_session.ses_id.ses_stamp * NSEC_PER_MSEC;
 504                 tv = ns_to_timeval(dur);
 505
 506                 if (copy_to_user(&ent->rpe_peer,
 507                                  &nd->nd_id, sizeof(struct lnet_process_id)) ||
 508                     copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
 509                     copy_to_user(&ent->rpe_state,
 510                                  &nd->nd_state, sizeof(nd->nd_state)) ||
 511                     copy_to_user(&ent->rpe_rpc_errno, &error,
 512                                      sizeof(error)))
 513                         return -EFAULT;
 514
 515                 if (error != 0)
 516                         continue;
 517
 518                 /* RPC is done */
 519                 rep = (struct srpc_generic_reply *)&msg->msg_body.reply;
 520
 521                 if (copy_to_user(&ent->rpe_sid,
 522                                  &rep->sid, sizeof(rep->sid)) ||
 523                     copy_to_user(&ent->rpe_fwk_errno,
 524                                  &rep->status, sizeof(rep->status)))
 525                         return -EFAULT;
 526
 527                 if (readent == NULL)
 528                         continue;
 529
 530                 error = readent(trans->tas_opc, msg, ent);
 531                 if (error != 0)
 532                         return error;
 533         }
 534
 535         return 0;
 536 }
 537
 538 void
 539 lstcon_rpc_trans_destroy(struct lstcon_rpc_trans *trans)
 540 {
 541         struct srpc_client_rpc *rpc;
 542         struct lstcon_rpc *crpc;
 543         struct lstcon_rpc *tmp;
 544         int count = 0;
 545
 546         list_for_each_entry_safe(crpc, tmp, &trans->tas_rpcs_list, crp_link) {
 547                 rpc = crpc->crp_rpc;
 548
 549                 spin_lock(&rpc->crpc_lock);
 550
 551                 /* free it if not posted or finished already */
 552                 if (!crpc->crp_posted || crpc->crp_finished) {
 553                         spin_unlock(&rpc->crpc_lock);
 554
 555                         list_del_init(&crpc->crp_link);
 556                         lstcon_rpc_put(crpc);
 557
 558                         continue;
 559                 }
 560
 561                 /* rpcs can be still not callbacked (even LNetMDUnlink is
 562                  * called) because huge timeout for inaccessible network,
 563                  * don't make user wait for them, just abandon them, they
 564                  * will be recycled in callback */
 565
 566                 LASSERT(crpc->crp_status != 0);
 567
 568                 crpc->crp_node  = NULL;
 569                 crpc->crp_trans = NULL;
 570                 list_del_init(&crpc->crp_link);
 571                 count++;
 572
 573                 spin_unlock(&rpc->crpc_lock);
 574
 575                 atomic_dec(&trans->tas_remaining);
 576         }
 577
 578         LASSERT(atomic_read(&trans->tas_remaining) == 0);
 579
 580         list_del(&trans->tas_link);
 581         if (!list_empty(&trans->tas_olink))
 582                 list_del(&trans->tas_olink);
 583
 584         CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
 585                lstcon_rpc_trans_name(trans->tas_opc), count);
 586
 587         LIBCFS_FREE(trans, sizeof(*trans));
 588
 589         return;
 590 }
 591
 592 int
 593 lstcon_sesrpc_prep(struct lstcon_node *nd, int transop,
 594                    unsigned int feats, struct lstcon_rpc **crpc)
 595 {
 596         struct srpc_mksn_reqst *msrq;
 597         struct srpc_rmsn_reqst *rsrq;
 598         int rc;
 599
 600         switch (transop) {
 601         case LST_TRANS_SESNEW:
 602                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_MAKE_SESSION,
 603                                      feats, 0, 0, crpc);
 604                 if (rc != 0)
 605                         return rc;
 606
 607                 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 608                 msrq->mksn_sid     = console_session.ses_id;
 609                 msrq->mksn_force   = console_session.ses_force;
 610                 strlcpy(msrq->mksn_name, console_session.ses_name,
 611                         sizeof(msrq->mksn_name));
 612                 break;
 613
 614         case LST_TRANS_SESEND:
 615                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION,
 616                                      feats, 0, 0, crpc);
 617                 if (rc != 0)
 618                         return rc;
 619
 620                 rsrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.rmsn_reqst;
 621                 rsrq->rmsn_sid = console_session.ses_id;
 622                 break;
 623
 624         default:
 625                 LBUG();
 626         }
 627
 628         return 0;
 629 }
 630
 631 int
 632 lstcon_dbgrpc_prep(struct lstcon_node *nd, unsigned int feats,
 633                    struct lstcon_rpc **crpc)
 634 {
 635         struct srpc_debug_reqst *drq;
 636         int rc;
 637
 638         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_DEBUG, feats, 0, 0, crpc);
 639         if (rc != 0)
 640                 return rc;
 641
 642         drq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
 643
 644         drq->dbg_sid   = console_session.ses_id;
 645         drq->dbg_flags = 0;
 646
 647         return rc;
 648 }
 649
 650 int
 651 lstcon_batrpc_prep(struct lstcon_node *nd, int transop, unsigned int feats,
 652                    struct lstcon_tsb_hdr *tsb, struct lstcon_rpc **crpc)
 653 {
 654         struct lstcon_batch *batch;
 655         struct srpc_batch_reqst *brq;
 656         int rc;
 657
 658         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_BATCH, feats, 0, 0, crpc);
 659         if (rc != 0)
 660                 return rc;
 661
 662         brq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.bat_reqst;
 663
 664         brq->bar_sid     = console_session.ses_id;
 665         brq->bar_bid     = tsb->tsb_id;
 666         brq->bar_testidx = tsb->tsb_index;
 667         brq->bar_opc     = transop == LST_TRANS_TSBRUN ? SRPC_BATCH_OPC_RUN :
 668                            (transop == LST_TRANS_TSBSTOP ? SRPC_BATCH_OPC_STOP:
 669                             SRPC_BATCH_OPC_QUERY);
 670
 671         if (transop != LST_TRANS_TSBRUN &&
 672             transop != LST_TRANS_TSBSTOP)
 673                 return 0;
 674
 675         LASSERT (tsb->tsb_index == 0);
 676
 677         batch = (struct lstcon_batch *)tsb;
 678         brq->bar_arg = batch->bat_arg;
 679
 680         return 0;
 681 }
 682
 683 int
 684 lstcon_statrpc_prep(struct lstcon_node *nd, unsigned int feats,
 685                     struct lstcon_rpc **crpc)
 686 {
 687         struct srpc_stat_reqst *srq;
 688         int rc;
 689
 690         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_QUERY_STAT, feats, 0, 0, crpc);
 691         if (rc != 0)
 692                 return rc;
 693
 694         srq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.stat_reqst;
 695
 696         srq->str_sid  = console_session.ses_id;
 697         srq->str_type = 0; /* XXX remove it */
 698
 699         return 0;
 700 }
 701
 702 static struct lnet_process_id_packed *
 703 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
 704 {
 705         struct lnet_process_id_packed *pid;
 706         int                       i;
 707
 708         i = idx / SFW_ID_PER_PAGE;
 709
 710         LASSERT (i < nkiov);
 711
 712         pid = (struct lnet_process_id_packed *)page_address(kiov[i].kiov_page);
 713
 714         return &pid[idx % SFW_ID_PER_PAGE];
 715 }
 716
 717 static int
 718 lstcon_dstnodes_prep(struct lstcon_group *grp, int idx,
 719                      int dist, int span, int nkiov, lnet_kiov_t *kiov)
 720 {
 721         struct lnet_process_id_packed *pid;
 722         struct lstcon_ndlink *ndl;
 723         struct lstcon_node *nd;
 724         int start;
 725         int end;
 726         int i = 0;
 727
 728         LASSERT (dist >= 1);
 729         LASSERT (span >= 1);
 730         LASSERT (grp->grp_nnode >= 1);
 731
 732         if (span > grp->grp_nnode)
 733                 return -EINVAL;
 734
 735         start = ((idx / dist) * span) % grp->grp_nnode;
 736         end   = ((idx / dist) * span + span - 1) % grp->grp_nnode;
 737
 738         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 739                 nd = ndl->ndl_node;
 740                 if (i < start) {
 741                         i++;
 742                         continue;
 743                 }
 744
 745                 if (i > (end >= start ? end : grp->grp_nnode))
 746                         break;
 747
 748                 pid = lstcon_next_id((i - start), nkiov, kiov);
 749                 pid->nid = nd->nd_id.nid;
 750                 pid->pid = nd->nd_id.pid;
 751                 i++;
 752         }
 753
 754         if (start <= end)       /* done */
 755                 return 0;
 756
 757         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 758                 if (i > grp->grp_nnode + end)
 759                         break;
 760
 761                 nd = ndl->ndl_node;
 762                 pid = lstcon_next_id((i - start), nkiov, kiov);
 763                 pid->nid = nd->nd_id.nid;
 764                 pid->pid = nd->nd_id.pid;
 765                 i++;
 766         }
 767
 768         return 0;
 769 }
 770
 771 static int
 772 lstcon_pingrpc_prep(struct lst_test_ping_param *param,
 773                     struct srpc_test_reqst *req)
 774 {
 775         struct test_ping_req *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(struct lst_test_bulk_param *param,
 785                        struct srpc_test_reqst *req)
 786 {
 787         struct test_bulk_req *brq = &req->tsr_u.bulk_v0;
 788
 789         brq->blk_opc    = param->blk_opc;
 790         brq->blk_npg    = (param->blk_size + PAGE_SIZE - 1) /
 791                            PAGE_SIZE;
 792         brq->blk_flags  = param->blk_flags;
 793
 794         return 0;
 795 }
 796
 797 static int
 798 lstcon_bulkrpc_v1_prep(struct lst_test_bulk_param *param, bool is_client,
 799                        struct srpc_test_reqst *req)
 800 {
 801         struct test_bulk_req_v1 *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 = is_client ? param->blk_cli_off : param->blk_srv_off;
 807
 808         return 0;
 809 }
 810
 811 int
 812 lstcon_testrpc_prep(struct lstcon_node *nd, int transop, unsigned int feats,
 813                     struct lstcon_test *test, struct lstcon_rpc **crpc)
 814 {
 815         struct lstcon_group *sgrp = test->tes_src_grp;
 816         struct lstcon_group *dgrp = test->tes_dst_grp;
 817         struct srpc_test_reqst *trq;
 818         struct srpc_bulk *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_SIZE :
 828                       sizeof(struct lnet_process_id_packed) * 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) / test->tes_dist;
 839                 int nspan = (dgrp->grp_nnode + test->tes_span - 1) / 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) == 0 ?
 854                               PAGE_SIZE : min_t(int, nob, PAGE_SIZE);
 855                         nob -= len;
 856
 857                         bulk->bk_iovs[i].kiov_offset = 0;
 858                         bulk->bk_iovs[i].kiov_len    = len;
 859                         bulk->bk_iovs[i].kiov_page   =
 860                                 alloc_page(GFP_KERNEL);
 861
 862                         if (bulk->bk_iovs[i].kiov_page == NULL) {
 863                                 lstcon_rpc_put(*crpc);
 864                                 return -ENOMEM;
 865                         }
 866                 }
 867
 868                 bulk->bk_sink = 0;
 869
 870                 LASSERT (transop == LST_TRANS_TSBCLIADD);
 871
 872                 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
 873                                           test->tes_cliidx++,
 874                                           test->tes_dist,
 875                                           test->tes_span,
 876                                           npg, &bulk->bk_iovs[0]);
 877                 if (rc != 0) {
 878                         lstcon_rpc_put(*crpc);
 879                         return rc;
 880                 }
 881
 882                 trq->tsr_ndest = test->tes_span;
 883                 trq->tsr_loop  = test->tes_loop;
 884         }
 885
 886         trq->tsr_sid        = console_session.ses_id;
 887         trq->tsr_bid        = test->tes_hdr.tsb_id;
 888         trq->tsr_concur     = test->tes_concur;
 889         trq->tsr_is_client  = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
 890         trq->tsr_stop_onerr = !!test->tes_stop_onerr;
 891
 892         switch (test->tes_type) {
 893         case LST_TEST_PING:
 894                 trq->tsr_service = SRPC_SERVICE_PING;
 895                 rc = lstcon_pingrpc_prep((struct lst_test_ping_param *)
 896                                          &test->tes_param[0], trq);
 897                 break;
 898
 899         case LST_TEST_BULK:
 900                 trq->tsr_service = SRPC_SERVICE_BRW;
 901                 if ((feats & LST_FEAT_BULK_LEN) == 0) {
 902                         rc = lstcon_bulkrpc_v0_prep((struct lst_test_bulk_param *)
 903                                                     &test->tes_param[0], trq);
 904                 } else {
 905                         rc = lstcon_bulkrpc_v1_prep((struct lst_test_bulk_param *)
 906                                                     &test->tes_param[0],
 907                                                     trq->tsr_is_client, 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(struct lstcon_rpc_trans *trans,
 921                          struct lstcon_node *nd, struct srpc_msg *reply)
 922 {
 923         struct srpc_mksn_reply *mksn_rep = &reply->msg_body.mksn_reply;
 924         int status = mksn_rep->mksn_status;
 925
 926         if (status == 0 &&
 927             (reply->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 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 != 0)
 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 "
 952                         "features on this transaction: %x\n",
 953                          reply->msg_ses_feats, libcfs_nid2str(nd->nd_id.nid),
 954                          trans->tas_features);
 955                 status = mksn_rep->mksn_status = EPROTO;
 956         }
 957
 958         if (status == 0) {
 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(struct lstcon_rpc_trans *trans, struct srpc_msg *msg,
 968                       struct lstcon_node *nd, struct lstcon_trans_stat *stat)
 969 {
 970         struct srpc_rmsn_reply *rmsn_rep;
 971         struct srpc_debug_reply *dbg_rep;
 972         struct srpc_batch_reply *bat_rep;
 973         struct srpc_test_reply *test_rep;
 974         struct srpc_stat_reply *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 == 0) {
 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 == 0 ||
 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 == 0) {
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 != 0)
1040                         lstcon_tsbqry_stat_run(stat, 1);
1041                 else
1042                         lstcon_tsbqry_stat_idle(stat, 1);
1043
1044                 if (bat_rep->bar_status == 0)
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 == 0) {
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 == 0) {
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 == 0)
1081                 stat->trs_fwk_errno = rc;
1082
1083         return;
1084 }
1085
1086 int
1087 lstcon_rpc_trans_ndlist(struct list_head *ndlist,
1088                         struct list_head *translist, int transop,
1089                         void *arg, lstcon_rpc_cond_func_t condition,
1090                         struct lstcon_rpc_trans **transpp)
1091 {
1092         struct lstcon_rpc_trans *trans;
1093         struct lstcon_ndlink *ndl;
1094         struct lstcon_node *nd;
1095         struct lstcon_rpc *rpc;
1096         unsigned int feats;
1097         int rc;
1098
1099         /* Creating session RPG for list of nodes */
1100
1101         rc = lstcon_rpc_trans_prep(translist, transop, &trans);
1102         if (rc != 0) {
1103                 CERROR("Can't create transaction %d: %d\n", transop, rc);
1104                 return rc;
1105         }
1106
1107         feats = trans->tas_features;
1108         list_for_each_entry(ndl, ndlist, ndl_link) {
1109                 rc = condition == NULL ? 1 :
1110                      condition(transop, ndl->ndl_node, arg);
1111
1112                 if (rc == 0)
1113                         continue;
1114
1115                 if (rc < 0) {
1116                         CDEBUG(D_NET, "Condition error while creating RPC "
1117                                       " for transaction %d: %d\n", transop, rc);
1118                         break;
1119                 }
1120
1121                 nd = ndl->ndl_node;
1122
1123                 switch (transop) {
1124                 case LST_TRANS_SESNEW:
1125                 case LST_TRANS_SESEND:
1126                         rc = lstcon_sesrpc_prep(nd, transop, feats, &rpc);
1127                         break;
1128                 case LST_TRANS_SESQRY:
1129                 case LST_TRANS_SESPING:
1130                         rc = lstcon_dbgrpc_prep(nd, feats, &rpc);
1131                         break;
1132                 case LST_TRANS_TSBCLIADD:
1133                 case LST_TRANS_TSBSRVADD:
1134                         rc = lstcon_testrpc_prep(nd, transop, feats,
1135                                                  (struct lstcon_test *)arg,
1136                                                  &rpc);
1137                         break;
1138                 case LST_TRANS_TSBRUN:
1139                 case LST_TRANS_TSBSTOP:
1140                 case LST_TRANS_TSBCLIQRY:
1141                 case LST_TRANS_TSBSRVQRY:
1142                         rc = lstcon_batrpc_prep(nd, transop, feats,
1143                                                 (struct lstcon_tsb_hdr *)arg,
1144                                                 &rpc);
1145                         break;
1146                 case LST_TRANS_STATQRY:
1147                         rc = lstcon_statrpc_prep(nd, feats, &rpc);
1148                         break;
1149                 default:
1150                         rc = -EINVAL;
1151                         break;
1152                 }
1153
1154                 if (rc != 0) {
1155                         CERROR("Failed to create RPC for transaction %s: %d\n",
1156                                lstcon_rpc_trans_name(transop), rc);
1157                         break;
1158                 }
1159
1160                 lstcon_rpc_trans_addreq(trans, rpc);
1161         }
1162
1163         if (rc == 0) {
1164                 *transpp = trans;
1165                 return 0;
1166         }
1167
1168         lstcon_rpc_trans_destroy(trans);
1169
1170         return rc;
1171 }
1172
1173 static void
1174 lstcon_rpc_pinger(void *arg)
1175 {
1176         struct stt_timer *ptimer = arg;
1177         struct lstcon_rpc_trans *trans;
1178         struct lstcon_rpc *crpc;
1179         struct srpc_msg *rep;
1180         struct srpc_debug_reqst *drq;
1181         struct lstcon_ndlink *ndl;
1182         struct lstcon_node *nd;
1183         int intv;
1184         int count = 0;
1185         int rc;
1186
1187         /* RPC pinger is a special case of transaction,
1188          * it's called by timer at 8 seconds interval.
1189          */
1190         mutex_lock(&console_session.ses_mutex);
1191
1192         if (console_session.ses_shutdown || console_session.ses_expired) {
1193                 mutex_unlock(&console_session.ses_mutex);
1194                 return;
1195         }
1196
1197         if (!console_session.ses_expired &&
1198             ktime_get_real_seconds() - console_session.ses_laststamp >
1199             (time64_t)console_session.ses_timeout)
1200                 console_session.ses_expired = 1;
1201
1202         trans = console_session.ses_ping;
1203
1204         LASSERT(trans != NULL);
1205
1206         list_for_each_entry(ndl, &console_session.ses_ndl_list, ndl_link) {
1207                 nd = ndl->ndl_node;
1208
1209                 if (console_session.ses_expired) {
1210                         /* idle console, end session on all nodes */
1211                         if (nd->nd_state != LST_NODE_ACTIVE)
1212                                 continue;
1213
1214                         rc = lstcon_sesrpc_prep(nd, LST_TRANS_SESEND,
1215                                                 trans->tas_features, &crpc);
1216                         if (rc != 0) {
1217                                 CERROR("Out of memory\n");
1218                                 break;
1219                         }
1220
1221                         lstcon_rpc_trans_addreq(trans, crpc);
1222                         lstcon_rpc_post(crpc);
1223
1224                         continue;
1225                 }
1226
1227                 crpc = &nd->nd_ping;
1228
1229                 if (crpc->crp_rpc != NULL) {
1230                         LASSERT(crpc->crp_trans == trans);
1231                         LASSERT(!list_empty(&crpc->crp_link));
1232
1233                         spin_lock(&crpc->crp_rpc->crpc_lock);
1234
1235                         LASSERT(crpc->crp_posted);
1236
1237                         if (!crpc->crp_finished) {
1238                                 /* in flight */
1239                                 spin_unlock(&crpc->crp_rpc->crpc_lock);
1240                                 continue;
1241                         }
1242
1243                         spin_unlock(&crpc->crp_rpc->crpc_lock);
1244
1245                         lstcon_rpc_get_reply(crpc, &rep);
1246
1247                         list_del_init(&crpc->crp_link);
1248
1249                         lstcon_rpc_put(crpc);
1250                 }
1251
1252                 if (nd->nd_state != LST_NODE_ACTIVE)
1253                         continue;
1254
1255                 intv = ktime_ms_delta(ktime_get(), nd->nd_stamp) / MSEC_PER_SEC;
1256                 if (intv < nd->nd_timeout / 2)
1257                         continue;
1258
1259                 rc = lstcon_rpc_init(nd, SRPC_SERVICE_DEBUG,
1260                                      trans->tas_features, 0, 0, 1, crpc);
1261                 if (rc != 0) {
1262                         CERROR("Out of memory\n");
1263                         break;
1264                 }
1265
1266                 drq = &crpc->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
1267
1268                 drq->dbg_sid   = console_session.ses_id;
1269                 drq->dbg_flags = 0;
1270
1271                 lstcon_rpc_trans_addreq(trans, crpc);
1272                 lstcon_rpc_post(crpc);
1273
1274                 count++;
1275         }
1276
1277         if (console_session.ses_expired) {
1278                 mutex_unlock(&console_session.ses_mutex);
1279                 return;
1280         }
1281
1282         CDEBUG(D_NET, "Ping %d nodes in session\n", count);
1283
1284         ptimer->stt_expires = ktime_get_real_seconds() + LST_PING_INTERVAL;
1285         stt_add_timer(ptimer);
1286
1287         mutex_unlock(&console_session.ses_mutex);
1288 }
1289
1290 int
1291 lstcon_rpc_pinger_start(void)
1292 {
1293         struct stt_timer *ptimer;
1294         int rc;
1295
1296         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1297         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1298
1299         rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1300                                    &console_session.ses_ping);
1301         if (rc != 0) {
1302                 CERROR("Failed to create console pinger\n");
1303                 return rc;
1304         }
1305
1306         ptimer = &console_session.ses_ping_timer;
1307         ptimer->stt_expires = ktime_get_real_seconds() + LST_PING_INTERVAL;
1308
1309         stt_add_timer(ptimer);
1310
1311         return 0;
1312 }
1313
1314 void
1315 lstcon_rpc_pinger_stop(void)
1316 {
1317         LASSERT (console_session.ses_shutdown);
1318
1319         stt_del_timer(&console_session.ses_ping_timer);
1320
1321         lstcon_rpc_trans_abort(console_session.ses_ping, -ESHUTDOWN);
1322         lstcon_rpc_trans_stat(console_session.ses_ping, lstcon_trans_stat());
1323         lstcon_rpc_trans_destroy(console_session.ses_ping);
1324
1325         memset(lstcon_trans_stat(), 0, sizeof(struct lstcon_trans_stat));
1326
1327         console_session.ses_ping = NULL;
1328 }
1329
1330 void
1331 lstcon_rpc_cleanup_wait(void)
1332 {
1333         struct lstcon_rpc_trans *trans;
1334         struct lstcon_rpc *crpc;
1335         struct list_head *pacer;
1336         struct list_head zlist;
1337
1338         /* Called with hold of global mutex */
1339
1340         LASSERT(console_session.ses_shutdown);
1341
1342         while (!list_empty(&console_session.ses_trans_list)) {
1343                 list_for_each(pacer, &console_session.ses_trans_list) {
1344                         trans = list_entry(pacer, struct lstcon_rpc_trans,
1345                                            tas_link);
1346
1347                         CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1348                                lstcon_rpc_trans_name(trans->tas_opc));
1349
1350                         wake_up(&trans->tas_waitq);
1351                 }
1352
1353                 mutex_unlock(&console_session.ses_mutex);
1354
1355                 CWARN("Session is shutting down, "
1356                       "waiting for termination of transactions\n");
1357                 set_current_state(TASK_UNINTERRUPTIBLE);
1358                 schedule_timeout(cfs_time_seconds(1));
1359
1360                 mutex_lock(&console_session.ses_mutex);
1361         }
1362
1363         spin_lock(&console_session.ses_rpc_lock);
1364
1365         lst_wait_until((atomic_read(&console_session.ses_rpc_counter) == 0),
1366                        console_session.ses_rpc_lock,
1367                        "Network is not accessable or target is down, "
1368                        "waiting for %d console RPCs to being recycled\n",
1369                        atomic_read(&console_session.ses_rpc_counter));
1370
1371         list_add(&zlist, &console_session.ses_rpc_freelist);
1372         list_del_init(&console_session.ses_rpc_freelist);
1373
1374         spin_unlock(&console_session.ses_rpc_lock);
1375
1376         while (!list_empty(&zlist)) {
1377                 crpc = list_entry(zlist.next, struct lstcon_rpc, crp_link);
1378
1379                 list_del(&crpc->crp_link);
1380                 LIBCFS_FREE(crpc, sizeof(*crpc));
1381         }
1382 }
1383
1384 int
1385 lstcon_rpc_module_init(void)
1386 {
1387         INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1388         console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1389         console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1390
1391         console_session.ses_ping = NULL;
1392
1393         spin_lock_init(&console_session.ses_rpc_lock);
1394         atomic_set(&console_session.ses_rpc_counter, 0);
1395         INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1396
1397         return 0;
1398 }
1399
1400 void
1401 lstcon_rpc_module_fini(void)
1402 {
1403         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1404         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1405 }
1406