lnet/selftest/conrpc.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  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 <liangzhen@clusterfs.com>
  41  */
  42
  43 #ifdef __KERNEL__
  44
  45 #include <libcfs/libcfs.h>
  46 #include <lnet/lib-lnet.h>
  47 #include "timer.h"
  48 #include "conrpc.h"
  49 #include "console.h"
  50
  51 void lstcon_rpc_stat_reply(int, srpc_msg_t *,
  52                            lstcon_node_t *, lstcon_trans_stat_t *);
  53
  54 static void
  55 lstcon_rpc_done(srpc_client_rpc_t *rpc)
  56 {
  57         lstcon_rpc_t *crpc = (lstcon_rpc_t *)rpc->crpc_priv;
  58
  59         LASSERT (crpc != NULL && rpc == crpc->crp_rpc);
  60         LASSERT (crpc->crp_posted && !crpc->crp_finished);
  61
  62         spin_lock(&rpc->crpc_lock);
  63
  64         if (crpc->crp_trans == NULL) {
  65                 /* Orphan RPC is not in any transaction,
  66                  * I'm just a poor body and nobody loves me */
  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 == 0) {
  78                 /* not aborted */
  79                 LASSERT (crpc->crp_status == 0);
  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                 cfs_waitq_signal(&crpc->crp_trans->tas_waitq);
  88
  89         spin_unlock(&rpc->crpc_lock);
  90 }
  91
  92 int
  93 lstcon_rpc_init(lstcon_node_t *nd, int service,
  94                 int npg, int cached, lstcon_rpc_t *crpc)
  95 {
  96
  97         crpc->crp_rpc = sfw_create_rpc(nd->nd_id, service,
  98                                        npg, npg * CFS_PAGE_SIZE,
  99                                        lstcon_rpc_done, (void *)crpc);
 100         if (crpc->crp_rpc == NULL)
 101                 return -ENOMEM;
 102
 103         crpc->crp_trans    = NULL;
 104         crpc->crp_node     = nd;
 105         crpc->crp_posted   = 0;
 106         crpc->crp_finished = 0;
 107         crpc->crp_unpacked = 0;
 108         crpc->crp_status   = 0;
 109         crpc->crp_stamp    = 0;
 110         crpc->crp_static   = !cached;
 111         CFS_INIT_LIST_HEAD(&crpc->crp_link);
 112
 113         atomic_inc(&console_session.ses_rpc_counter);
 114
 115         return 0;
 116 }
 117
 118 int
 119 lstcon_rpc_prep(lstcon_node_t *nd, int service,
 120                 int npg, lstcon_rpc_t **crpcpp)
 121 {
 122         lstcon_rpc_t  *crpc = NULL;
 123         int            rc;
 124
 125         spin_lock(&console_session.ses_rpc_lock);
 126
 127         if (!list_empty(&console_session.ses_rpc_freelist)) {
 128                 crpc = list_entry(console_session.ses_rpc_freelist.next,
 129                                   lstcon_rpc_t, crp_link);
 130                 list_del_init(&crpc->crp_link);
 131         }
 132
 133         spin_unlock(&console_session.ses_rpc_lock);
 134
 135         if (crpc == NULL) {
 136                 LIBCFS_ALLOC(crpc, sizeof(*crpc));
 137                 if (crpc == NULL)
 138                         return -ENOMEM;
 139         }
 140
 141         rc = lstcon_rpc_init(nd, service, npg, 1, crpc);
 142         if (rc == 0) {
 143                 *crpcpp = crpc;
 144                 return 0;
 145         }
 146
 147         LIBCFS_FREE(crpc, sizeof(*crpc));
 148
 149         return rc;
 150 }
 151
 152 void
 153 lstcon_rpc_put(lstcon_rpc_t *crpc)
 154 {
 155         srpc_bulk_t *bulk = &crpc->crp_rpc->crpc_bulk;
 156         int          i;
 157
 158         LASSERT (list_empty(&crpc->crp_link));
 159
 160         for (i = 0; i < bulk->bk_niov; i++) {
 161                 if (bulk->bk_iovs[i].kiov_page == NULL)
 162                         continue;
 163
 164                 cfs_free_page(bulk->bk_iovs[i].kiov_page);
 165         }
 166
 167         srpc_client_rpc_decref(crpc->crp_rpc);
 168
 169         if (crpc->crp_static) {
 170                 /* Static RPC, not allocated */
 171                 memset(crpc, 0, sizeof(*crpc));
 172                 crpc->crp_static = 1;
 173
 174         } else {
 175                 spin_lock(&console_session.ses_rpc_lock);
 176
 177                 list_add(&crpc->crp_link, &console_session.ses_rpc_freelist);
 178
 179                 spin_unlock(&console_session.ses_rpc_lock);
 180         }
 181
 182         /* RPC is not alive now */
 183         atomic_dec(&console_session.ses_rpc_counter);
 184 }
 185
 186 void
 187 lstcon_rpc_post(lstcon_rpc_t *crpc)
 188 {
 189         lstcon_rpc_trans_t *trans = crpc->crp_trans;
 190
 191         LASSERT (trans != NULL);
 192
 193         atomic_inc(&trans->tas_remaining);
 194         crpc->crp_posted = 1;
 195
 196         sfw_post_rpc(crpc->crp_rpc);
 197 }
 198
 199 static char *
 200 lstcon_rpc_trans_name(int transop)
 201 {
 202         if (transop == LST_TRANS_SESNEW)
 203                 return "SESNEW";
 204
 205         if (transop == LST_TRANS_SESEND)
 206                 return "SESEND";
 207
 208         if (transop == LST_TRANS_SESQRY)
 209                 return "SESQRY";
 210
 211         if (transop == LST_TRANS_SESPING)
 212                 return "SESPING";
 213
 214         if (transop == LST_TRANS_TSBCLIADD)
 215                 return "TSBCLIADD";
 216
 217         if (transop == LST_TRANS_TSBSRVADD)
 218                 return "TSBSRVADD";
 219
 220         if (transop == LST_TRANS_TSBRUN)
 221                 return "TSBRUN";
 222
 223         if (transop == LST_TRANS_TSBSTOP)
 224                 return "TSBSTOP";
 225
 226         if (transop == LST_TRANS_TSBCLIQRY)
 227                 return "TSBCLIQRY";
 228
 229         if (transop == LST_TRANS_TSBSRVQRY)
 230                 return "TSBSRVQRY";
 231
 232         if (transop == LST_TRANS_STATQRY)
 233                 return "STATQRY";
 234
 235         return "Unknown";
 236 }
 237
 238 int
 239 lstcon_rpc_trans_prep(struct list_head *translist,
 240                       int transop, lstcon_rpc_trans_t **transpp)
 241 {
 242         lstcon_rpc_trans_t *trans;
 243
 244         if (translist != NULL) {
 245                 cfs_list_for_each_entry_typed(trans, translist,
 246                                               lstcon_rpc_trans_t, tas_link) {
 247                         /* Can't enqueue two private transaction on
 248                          * the same object */
 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 == NULL)
 257                 return -ENOMEM;
 258
 259         trans->tas_opc = transop;
 260
 261         if (translist == NULL)
 262                 CFS_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         CFS_INIT_LIST_HEAD(&trans->tas_rpcs_list);
 269         atomic_set(&trans->tas_remaining, 0);
 270         cfs_waitq_init(&trans->tas_waitq);
 271
 272         *transpp = trans;
 273
 274         return 0;
 275 }
 276
 277 void
 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
 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         cfs_list_for_each_entry_typed (crpc, &trans->tas_rpcs_list,
 292                                        lstcon_rpc_t, crp_link) {
 293                 rpc = crpc->crp_rpc;
 294
 295                 spin_lock(&rpc->crpc_lock);
 296
 297                 if (!crpc->crp_posted || crpc->crp_stamp != 0) {
 298                         /* rpc done or aborted already */
 299                         spin_unlock(&rpc->crpc_lock);
 300                         continue;
 301                 }
 302
 303                 crpc->crp_stamp  = cfs_time_current();
 304                 crpc->crp_status = error;
 305
 306                 spin_unlock(&rpc->crpc_lock);
 307
 308                 sfw_abort_rpc(rpc);
 309
 310                 if  (error != ETIMEDOUT)
 311                         continue;
 312
 313                 nd = crpc->crp_node;
 314                 if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 315                         continue;
 316
 317                 nd->nd_stamp = crpc->crp_stamp;
 318                 nd->nd_state = LST_NODE_DOWN;
 319         }
 320 }
 321
 322 static int
 323 lstcon_rpc_trans_check(lstcon_rpc_trans_t *trans)
 324 {
 325         if (console_session.ses_shutdown &&
 326             !list_empty(&trans->tas_olink)) /* It's not an end session RPC */
 327                 return 1;
 328
 329         return (atomic_read(&trans->tas_remaining) == 0) ? 1: 0;
 330 }
 331
 332 int
 333 lstcon_rpc_trans_postwait(lstcon_rpc_trans_t *trans, int timeout)
 334 {
 335         lstcon_rpc_t  *crpc;
 336         int            rc;
 337
 338         if (list_empty(&trans->tas_rpcs_list))
 339                 return 0;
 340
 341         if (timeout < LST_TRANS_MIN_TIMEOUT)
 342                 timeout = LST_TRANS_MIN_TIMEOUT;
 343
 344         CDEBUG(D_NET, "Transaction %s started\n",
 345                lstcon_rpc_trans_name(trans->tas_opc));
 346
 347         /* post all requests */
 348         cfs_list_for_each_entry_typed (crpc, &trans->tas_rpcs_list,
 349                                        lstcon_rpc_t, crp_link) {
 350                 LASSERT (!crpc->crp_posted);
 351
 352                 lstcon_rpc_post(crpc);
 353         }
 354
 355         mutex_up(&console_session.ses_mutex);
 356
 357         cfs_waitq_wait_event_interruptible_timeout(trans->tas_waitq,
 358                                               lstcon_rpc_trans_check(trans),
 359                                               cfs_time_seconds(timeout), rc);
 360
 361         rc = (rc > 0)? 0: ((rc < 0)? -EINTR: -ETIMEDOUT);
 362
 363         mutex_down(&console_session.ses_mutex);
 364
 365         if (console_session.ses_shutdown)
 366                 rc = -ESHUTDOWN;
 367
 368         if (rc != 0) {
 369                 /* treat short timeout as canceled */
 370                 if (rc == -ETIMEDOUT && timeout < LST_TRANS_MIN_TIMEOUT * 2)
 371                         rc = -EINTR;
 372
 373                 lstcon_rpc_trans_abort(trans, rc);
 374         }
 375
 376         CDEBUG(D_NET, "Transaction %s stopped: %d\n",
 377                lstcon_rpc_trans_name(trans->tas_opc), rc);
 378
 379         lstcon_rpc_trans_stat(trans, lstcon_trans_stat());
 380
 381         return rc;
 382 }
 383
 384 int
 385 lstcon_rpc_get_reply(lstcon_rpc_t *crpc, srpc_msg_t **msgpp)
 386 {
 387         lstcon_node_t        *nd  = crpc->crp_node;
 388         srpc_client_rpc_t    *rpc = crpc->crp_rpc;
 389         srpc_generic_reply_t *rep;
 390
 391         LASSERT (nd != NULL && rpc != NULL);
 392         LASSERT (crpc->crp_stamp != 0);
 393
 394         if (crpc->crp_status != 0) {
 395                 *msgpp = NULL;
 396                 return crpc->crp_status;
 397         }
 398
 399         *msgpp = &rpc->crpc_replymsg;
 400         if (!crpc->crp_unpacked) {
 401                 sfw_unpack_message(*msgpp);
 402                 crpc->crp_unpacked = 1;
 403         }
 404
 405         if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 406                 return 0;
 407
 408         nd->nd_stamp = crpc->crp_stamp;
 409         rep = &(*msgpp)->msg_body.reply;
 410
 411         if (rep->sid.ses_nid == LNET_NID_ANY)
 412                 nd->nd_state = LST_NODE_UNKNOWN;
 413         else if (lstcon_session_match(rep->sid))
 414                 nd->nd_state = LST_NODE_ACTIVE;
 415         else
 416                 nd->nd_state = LST_NODE_BUSY;
 417
 418         return 0;
 419 }
 420
 421 void
 422 lstcon_rpc_trans_stat(lstcon_rpc_trans_t *trans, lstcon_trans_stat_t *stat)
 423 {
 424         lstcon_rpc_t      *crpc;
 425         srpc_client_rpc_t *rpc;
 426         srpc_msg_t        *rep;
 427         int                error;
 428
 429         LASSERT (stat != NULL);
 430
 431         memset(stat, 0, sizeof(*stat));
 432
 433         cfs_list_for_each_entry_typed(crpc, &trans->tas_rpcs_list,
 434                                       lstcon_rpc_t, crp_link) {
 435                 lstcon_rpc_stat_total(stat, 1);
 436
 437                 rpc = crpc->crp_rpc;
 438
 439                 LASSERT (crpc->crp_stamp != 0);
 440
 441                 error = lstcon_rpc_get_reply(crpc, &rep);
 442                 if (error != 0) {
 443                         lstcon_rpc_stat_failure(stat, 1);
 444                         if (stat->trs_rpc_errno == 0)
 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->tas_opc, rep,
 453                                       crpc->crp_node, stat);
 454         }
 455
 456         CDEBUG(D_NET, "transaction %s : success %d, failure %d, total %d, "
 457                       "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
 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         srpc_client_rpc_t    *rpc;
 477         lstcon_rpc_t         *crpc;
 478         srpc_msg_t           *msg;
 479         lstcon_node_t        *nd;
 480         cfs_duration_t        dur;
 481         struct timeval        tv;
 482         int                   error;
 483
 484         LASSERT (head_up != NULL);
 485
 486         next = head_up;
 487
 488         cfs_list_for_each_entry_typed(crpc, &trans->tas_rpcs_list,
 489                                       lstcon_rpc_t, crp_link) {
 490                 if (copy_from_user(&tmp, next, 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                 rpc = crpc->crp_rpc;
 501
 502                 LASSERT (crpc->crp_stamp != 0);
 503
 504                 error = lstcon_rpc_get_reply(crpc, &msg);
 505
 506                 nd = crpc->crp_node;
 507
 508                 dur = (cfs_duration_t)cfs_time_sub(crpc->crp_stamp,
 509                       (cfs_time_t)console_session.ses_id.ses_stamp);
 510                 cfs_duration_usec(dur, &tv);
 511
 512                 if (copy_to_user(&ent->rpe_peer,
 513                                  &nd->nd_id, sizeof(lnet_process_id_t)) ||
 514                     copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
 515                     copy_to_user(&ent->rpe_state,
 516                                  &nd->nd_state, sizeof(nd->nd_state)) ||
 517                     copy_to_user(&ent->rpe_rpc_errno, &error, sizeof(error)))
 518                         return -EFAULT;
 519
 520                 if (error != 0)
 521                         continue;
 522
 523                 /* RPC is done */
 524                 rep = (srpc_generic_reply_t *)&msg->msg_body.reply;
 525
 526                 if (copy_to_user(&ent->rpe_sid,
 527                                  &rep->sid, sizeof(lst_sid_t)) ||
 528                     copy_to_user(&ent->rpe_fwk_errno,
 529                                  &rep->status, sizeof(rep->status)))
 530                         return -EFAULT;
 531
 532                 if (readent == NULL)
 533                         continue;
 534
 535                 if ((error = readent(trans->tas_opc, msg, ent)) != 0)
 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         cfs_list_for_each_entry_safe_typed(crpc, tmp,
 551                                            &trans->tas_rpcs_list,
 552                                            lstcon_rpc_t, crp_link) {
 553                 rpc = crpc->crp_rpc;
 554
 555                 spin_lock(&rpc->crpc_lock);
 556
 557                 /* free it if not posted or finished already */
 558                 if (!crpc->crp_posted || crpc->crp_finished) {
 559                         spin_unlock(&rpc->crpc_lock);
 560
 561                         list_del_init(&crpc->crp_link);
 562                         lstcon_rpc_put(crpc);
 563
 564                         continue;
 565                 }
 566
 567                 /* rpcs can be still not callbacked (even LNetMDUnlink is called)
 568                  * because huge timeout for inaccessible network, don't make
 569                  * user wait for them, just abandon them, they will be recycled
 570                  * in callback */
 571
 572                 LASSERT (crpc->crp_status != 0);
 573
 574                 crpc->crp_node  = NULL;
 575                 crpc->crp_trans = NULL;
 576                 list_del_init(&crpc->crp_link);
 577                 count ++;
 578
 579                 spin_unlock(&rpc->crpc_lock);
 580
 581                 atomic_dec(&trans->tas_remaining);
 582         }
 583
 584         LASSERT (atomic_read(&trans->tas_remaining) == 0);
 585
 586         list_del(&trans->tas_link);
 587         if (!list_empty(&trans->tas_olink))
 588                 list_del(&trans->tas_olink);
 589
 590         CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
 591                lstcon_rpc_trans_name(trans->tas_opc), count);
 592
 593         LIBCFS_FREE(trans, sizeof(*trans));
 594
 595         return;
 596 }
 597
 598 int
 599 lstcon_sesrpc_prep(lstcon_node_t *nd, int transop, 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, 0, crpc);
 608                 if (rc != 0)
 609                         return rc;
 610
 611                 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 612                 msrq->mksn_sid     = console_session.ses_id;
 613                 msrq->mksn_force   = console_session.ses_force;
 614                 strncpy(msrq->mksn_name, console_session.ses_name,
 615                         strlen(console_session.ses_name));
 616                 break;
 617
 618         case LST_TRANS_SESEND:
 619                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION, 0, crpc);
 620                 if (rc != 0)
 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, lstcon_rpc_t **crpc)
 636 {
 637         srpc_debug_reqst_t *drq;
 638         int                 rc;
 639
 640         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_DEBUG, 0, crpc);
 641         if (rc != 0)
 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,
 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, 0, crpc);
 661         if (rc != 0)
 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 == 0);
 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, 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, 0, crpc);
 692         if (rc != 0)
 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 lnet_process_id_t *
 704 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
 705 {
 706         lnet_process_id_t *pid;
 707         int                i;
 708
 709         i = idx / (CFS_PAGE_SIZE / sizeof(lnet_process_id_t));
 710
 711         LASSERT (i < nkiov);
 712
 713         pid = (lnet_process_id_t *)cfs_page_address(kiov[i].kiov_page);
 714
 715         return &pid[idx % (CFS_PAGE_SIZE / sizeof(lnet_process_id_t))];
 716 }
 717
 718 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_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         cfs_list_for_each_entry_typed(ndl, &grp->grp_ndl_list,
 740                                       lstcon_ndlink_t, ndl_link) {
 741                 nd = ndl->ndl_node;
 742                 if (i < start) {
 743                         i ++;
 744                         continue;
 745                 }
 746
 747                 if (i > (end >= start ? end: grp->grp_nnode))
 748                         break;
 749
 750                 pid = lstcon_next_id((i - start), nkiov, kiov);
 751                 *pid = nd->nd_id;
 752                 i++;
 753         }
 754
 755         if (start <= end) /* done */
 756                 return 0;
 757
 758         cfs_list_for_each_entry_typed(ndl, &grp->grp_ndl_list,
 759                                       lstcon_ndlink_t, ndl_link) {
 760                 if (i > grp->grp_nnode + end)
 761                         break;
 762
 763                 nd = ndl->ndl_node;
 764                 pid = lstcon_next_id((i - start), nkiov, kiov);
 765                 *pid = nd->nd_id;
 766                 i++;
 767         }
 768
 769         return 0;
 770 }
 771
 772 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 int
 784 lstcon_bulkrpc_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
 785 {
 786         test_bulk_req_t *brq = &req->tsr_u.bulk;
 787
 788         brq->blk_opc    = param->blk_opc;
 789         brq->blk_npg    = (param->blk_size + CFS_PAGE_SIZE - 1) / CFS_PAGE_SIZE;
 790         brq->blk_flags  = param->blk_flags;
 791
 792         return 0;
 793 }
 794
 795 int
 796 lstcon_testrpc_prep(lstcon_node_t *nd, int transop,
 797                     lstcon_test_t *test, lstcon_rpc_t **crpc)
 798 {
 799         lstcon_group_t    *sgrp = test->tes_src_grp;
 800         lstcon_group_t    *dgrp = test->tes_dst_grp;
 801         srpc_test_reqst_t *trq;
 802         srpc_bulk_t       *bulk;
 803         int                i;
 804         int                n  = 0;
 805         int                rc = 0;
 806
 807         if (transop == LST_TRANS_TSBCLIADD)
 808                 n = sfw_id_pages(test->tes_span);
 809
 810         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_TEST, n, crpc);
 811         if (rc != 0)
 812                 return rc;
 813
 814         trq  = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.tes_reqst;
 815
 816         if (transop == LST_TRANS_TSBSRVADD) {
 817                 int ndist = (sgrp->grp_nnode + test->tes_dist - 1) / test->tes_dist;
 818                 int nspan = (dgrp->grp_nnode + test->tes_span - 1) / test->tes_span;
 819                 int nmax = (ndist + nspan - 1) / nspan;
 820
 821                 trq->tsr_ndest = 0;
 822                 trq->tsr_loop  = nmax * test->tes_dist * test->tes_concur;
 823
 824         } else {
 825                 bulk = &(*crpc)->crp_rpc->crpc_bulk;
 826
 827                 for (i = 0; i < n; i++) {
 828                         bulk->bk_iovs[i].kiov_offset = 0;
 829                         bulk->bk_iovs[i].kiov_len    = CFS_PAGE_SIZE;
 830                         bulk->bk_iovs[i].kiov_page   = cfs_alloc_page(CFS_ALLOC_STD);
 831
 832                         if (bulk->bk_iovs[i].kiov_page != NULL)
 833                                 continue;
 834
 835                         lstcon_rpc_put(*crpc);
 836                         return -ENOMEM;
 837                 }
 838
 839                 bulk->bk_sink = 0;
 840
 841                 LASSERT (transop == LST_TRANS_TSBCLIADD);
 842
 843                 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
 844                                           test->tes_cliidx++, test->tes_dist,
 845                                           test->tes_span, n, &bulk->bk_iovs[0]);
 846                 if (rc != 0) {
 847                         lstcon_rpc_put(*crpc);
 848                         return rc;
 849                 }
 850
 851                 trq->tsr_ndest = test->tes_span;
 852                 trq->tsr_loop  = test->tes_loop;
 853         }
 854
 855         trq->tsr_sid        = console_session.ses_id;
 856         trq->tsr_bid        = test->tes_hdr.tsb_id;
 857         trq->tsr_concur     = test->tes_concur;
 858         trq->tsr_is_client  = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
 859         trq->tsr_stop_onerr = !!test->tes_stop_onerr;
 860
 861         switch (test->tes_type) {
 862         case LST_TEST_PING:
 863                 trq->tsr_service = SRPC_SERVICE_PING;
 864                 rc = lstcon_pingrpc_prep((lst_test_ping_param_t *)&test->tes_param[0], trq);
 865                 break;
 866         case LST_TEST_BULK:
 867                 trq->tsr_service = SRPC_SERVICE_BRW;
 868                 rc = lstcon_bulkrpc_prep((lst_test_bulk_param_t *)&test->tes_param[0], trq);
 869                 break;
 870         default:
 871                 LBUG();
 872                 break;
 873         }
 874
 875         return rc;
 876 }
 877
 878 void
 879 lstcon_rpc_stat_reply(int transop, srpc_msg_t *msg,
 880                       lstcon_node_t *nd, lstcon_trans_stat_t *stat)
 881 {
 882         srpc_mksn_reply_t  *mksn_rep;
 883         srpc_rmsn_reply_t  *rmsn_rep;
 884         srpc_debug_reply_t *dbg_rep;
 885         srpc_batch_reply_t *bat_rep;
 886         srpc_test_reply_t  *test_rep;
 887         srpc_stat_reply_t  *stat_rep;
 888         int                 rc = 0;
 889
 890         switch (transop) {
 891         case LST_TRANS_SESNEW:
 892                 mksn_rep = &msg->msg_body.mksn_reply;
 893
 894                 if (mksn_rep->mksn_status == 0) {
 895                         lstcon_sesop_stat_success(stat, 1);
 896                         /* session timeout on remote node */
 897                         nd->nd_timeout = mksn_rep->mksn_timeout;
 898                         return;
 899                 }
 900
 901                 LASSERT (mksn_rep->mksn_status == EBUSY ||
 902                          mksn_rep->mksn_status == EINVAL);
 903
 904                 lstcon_sesop_stat_failure(stat, 1);
 905                 rc = mksn_rep->mksn_status;
 906                 break;
 907
 908         case LST_TRANS_SESEND:
 909                 rmsn_rep = &msg->msg_body.rmsn_reply;
 910                 /* ESRCH is not an error for end session */
 911                 if (rmsn_rep->rmsn_status == 0 ||
 912                     rmsn_rep->rmsn_status == ESRCH) {
 913                         lstcon_sesop_stat_success(stat, 1);
 914                         return;
 915                 }
 916
 917                 LASSERT (rmsn_rep->rmsn_status == EBUSY ||
 918                          rmsn_rep->rmsn_status == EINVAL);
 919
 920                 lstcon_sesop_stat_failure(stat, 1);
 921                 rc = rmsn_rep->rmsn_status;
 922                 break;
 923
 924         case LST_TRANS_SESQRY:
 925         case LST_TRANS_SESPING:
 926                 dbg_rep = &msg->msg_body.dbg_reply;
 927
 928                 if (dbg_rep->dbg_status == ESRCH) {
 929                         lstcon_sesqry_stat_unknown(stat, 1);
 930                         return;
 931                 }
 932
 933                 LASSERT (dbg_rep->dbg_status == 0);
 934
 935                 if (lstcon_session_match(dbg_rep->dbg_sid))
 936                         lstcon_sesqry_stat_active(stat, 1);
 937                 else
 938                         lstcon_sesqry_stat_busy(stat, 1);
 939                 return;
 940
 941         case LST_TRANS_TSBRUN:
 942         case LST_TRANS_TSBSTOP:
 943                 bat_rep = &msg->msg_body.bat_reply;
 944
 945                 if (bat_rep->bar_status == 0) {
 946                         lstcon_tsbop_stat_success(stat, 1);
 947                         return;
 948                 }
 949
 950                 if (bat_rep->bar_status == EPERM &&
 951                     transop == LST_TRANS_TSBSTOP) {
 952                         lstcon_tsbop_stat_success(stat, 1);
 953                         return;
 954                 }
 955
 956                 lstcon_tsbop_stat_failure(stat, 1);
 957                 rc = bat_rep->bar_status;
 958                 break;
 959
 960         case LST_TRANS_TSBCLIQRY:
 961         case LST_TRANS_TSBSRVQRY:
 962                 bat_rep = &msg->msg_body.bat_reply;
 963
 964                 if (bat_rep->bar_active != 0)
 965                         lstcon_tsbqry_stat_run(stat, 1);
 966                 else
 967                         lstcon_tsbqry_stat_idle(stat, 1);
 968
 969                 if (bat_rep->bar_status == 0)
 970                         return;
 971
 972                 lstcon_tsbqry_stat_failure(stat, 1);
 973                 rc = bat_rep->bar_status;
 974                 break;
 975
 976         case LST_TRANS_TSBCLIADD:
 977         case LST_TRANS_TSBSRVADD:
 978                 test_rep = &msg->msg_body.tes_reply;
 979
 980                 if (test_rep->tsr_status == 0) {
 981                         lstcon_tsbop_stat_success(stat, 1);
 982                         return;
 983                 }
 984
 985                 lstcon_tsbop_stat_failure(stat, 1);
 986                 rc = test_rep->tsr_status;
 987                 break;
 988
 989         case LST_TRANS_STATQRY:
 990                 stat_rep = &msg->msg_body.stat_reply;
 991
 992                 if (stat_rep->str_status == 0) {
 993                         lstcon_statqry_stat_success(stat, 1);
 994                         return;
 995                 }
 996
 997                 lstcon_statqry_stat_failure(stat, 1);
 998                 rc = stat_rep->str_status;
 999                 break;
1000
1001         default:
1002                 LBUG();
1003         }
1004
1005         if (stat->trs_fwk_errno == 0)
1006                 stat->trs_fwk_errno = rc;
1007
1008         return;
1009 }
1010
1011 int
1012 lstcon_rpc_trans_ndlist(struct list_head *ndlist,
1013                         struct list_head *translist, int transop,
1014                         void *arg, lstcon_rpc_cond_func_t condition,
1015                         lstcon_rpc_trans_t **transpp)
1016 {
1017         lstcon_rpc_trans_t *trans;
1018         lstcon_ndlink_t    *ndl;
1019         lstcon_node_t      *nd;
1020         lstcon_rpc_t       *rpc;
1021         int                 rc;
1022
1023         /* Creating session RPG for list of nodes */
1024
1025         rc = lstcon_rpc_trans_prep(translist, transop, &trans);
1026         if (rc != 0) {
1027                 CERROR("Can't create transaction %d: %d\n", transop, rc);
1028                 return rc;
1029         }
1030
1031         cfs_list_for_each_entry_typed(ndl, ndlist, lstcon_ndlink_t, ndl_link) {
1032                 rc = condition == NULL ? 1 :
1033                      condition(transop, ndl->ndl_node, arg);
1034
1035                 if (rc == 0)
1036                         continue;
1037
1038                 if (rc < 0) {
1039                         CDEBUG(D_NET, "Condition error while creating RPC "
1040                                       " for transaction %d: %d\n", transop, rc);
1041                         break;
1042                 }
1043
1044                 nd = ndl->ndl_node;
1045
1046                 switch (transop) {
1047                 case LST_TRANS_SESNEW:
1048                 case LST_TRANS_SESEND:
1049                         rc = lstcon_sesrpc_prep(nd, transop, &rpc);
1050                         break;
1051                 case LST_TRANS_SESQRY:
1052                 case LST_TRANS_SESPING:
1053                         rc = lstcon_dbgrpc_prep(nd, &rpc);
1054                         break;
1055                 case LST_TRANS_TSBCLIADD:
1056                 case LST_TRANS_TSBSRVADD:
1057                         rc = lstcon_testrpc_prep(nd, transop,
1058                                                  (lstcon_test_t *)arg, &rpc);
1059                         break;
1060                 case LST_TRANS_TSBRUN:
1061                 case LST_TRANS_TSBSTOP:
1062                 case LST_TRANS_TSBCLIQRY:
1063                 case LST_TRANS_TSBSRVQRY:
1064                         rc = lstcon_batrpc_prep(nd, transop,
1065                                                 (lstcon_tsb_hdr_t *)arg, &rpc);
1066                         break;
1067                 case LST_TRANS_STATQRY:
1068                         rc = lstcon_statrpc_prep(nd, &rpc);
1069                         break;
1070                 default:
1071                         rc = -EINVAL;
1072                         break;
1073                 }
1074
1075                 if (rc != 0) {
1076                         CERROR("Failed to create RPC for transaction %s: %d\n",
1077                                lstcon_rpc_trans_name(transop), rc);
1078                         break;
1079                 }
1080
1081                 lstcon_rpc_trans_addreq(trans, rpc);
1082         }
1083
1084         if (rc == 0) {
1085                 *transpp = trans;
1086                 return 0;
1087         }
1088
1089         lstcon_rpc_trans_destroy(trans);
1090
1091         return rc;
1092 }
1093
1094 void
1095 lstcon_rpc_pinger(void *arg)
1096 {
1097         stt_timer_t        *ptimer = (stt_timer_t *)arg;
1098         lstcon_rpc_trans_t *trans;
1099         lstcon_rpc_t       *crpc;
1100         srpc_msg_t         *rep;
1101         srpc_debug_reqst_t *drq;
1102         lstcon_ndlink_t    *ndl;
1103         lstcon_node_t      *nd;
1104         time_t              intv;
1105         int                 count = 0;
1106         int                 rc;
1107
1108         /* RPC pinger is a special case of transaction,
1109          * it's called by timer at 8 seconds interval.
1110          */
1111         mutex_down(&console_session.ses_mutex);
1112
1113         if (console_session.ses_shutdown || console_session.ses_expired) {
1114                 mutex_up(&console_session.ses_mutex);
1115                 return;
1116         }
1117
1118         if (!console_session.ses_expired &&
1119             cfs_time_current_sec() - console_session.ses_laststamp >
1120             (time_t)console_session.ses_timeout)
1121                 console_session.ses_expired = 1;
1122
1123         trans = console_session.ses_ping;
1124
1125         LASSERT (trans != NULL);
1126
1127         cfs_list_for_each_entry_typed(ndl, &console_session.ses_ndl_list,
1128                                       lstcon_ndlink_t, ndl_link) {
1129                 nd = ndl->ndl_node;
1130
1131                 if (console_session.ses_expired) {
1132                         /* idle console, end session on all nodes */
1133                         if (nd->nd_state != LST_NODE_ACTIVE)
1134                                 continue;
1135
1136                         rc = lstcon_sesrpc_prep(nd, LST_TRANS_SESEND, &crpc);
1137                         if (rc != 0) {
1138                                 CERROR("Out of memory\n");
1139                                 break;
1140                         }
1141
1142                         lstcon_rpc_trans_addreq(trans, crpc);
1143                         lstcon_rpc_post(crpc);
1144
1145                         continue;
1146                 }
1147
1148                 crpc = &nd->nd_ping;
1149
1150                 if (crpc->crp_rpc != NULL) {
1151                         LASSERT (crpc->crp_trans == trans);
1152                         LASSERT (!list_empty(&crpc->crp_link));
1153
1154                         spin_lock(&crpc->crp_rpc->crpc_lock);
1155
1156                         LASSERT (crpc->crp_posted);
1157
1158                         if (!crpc->crp_finished) {
1159                                 /* in flight */
1160                                 spin_unlock(&crpc->crp_rpc->crpc_lock);
1161                                 continue;
1162                         }
1163
1164                         spin_unlock(&crpc->crp_rpc->crpc_lock);
1165
1166                         lstcon_rpc_get_reply(crpc, &rep);
1167
1168                         list_del_init(&crpc->crp_link);
1169
1170                         lstcon_rpc_put(crpc);
1171                 }
1172
1173                 if (nd->nd_state != LST_NODE_ACTIVE)
1174                         continue;
1175
1176                 intv = cfs_duration_sec(cfs_time_sub(cfs_time_current(),
1177                                                      nd->nd_stamp));
1178                 if (intv < (time_t)nd->nd_timeout / 2)
1179                         continue;
1180
1181                 rc = lstcon_rpc_init(nd, SRPC_SERVICE_DEBUG, 0, 0, crpc);
1182                 if (rc != 0) {
1183                         CERROR("Out of memory\n");
1184                         break;
1185                 }
1186
1187                 drq = &crpc->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
1188
1189                 drq->dbg_sid   = console_session.ses_id;
1190                 drq->dbg_flags = 0;
1191
1192                 lstcon_rpc_trans_addreq(trans, crpc);
1193                 lstcon_rpc_post(crpc);
1194
1195                 count ++;
1196         }
1197
1198         if (console_session.ses_expired) {
1199                 mutex_up(&console_session.ses_mutex);
1200                 return;
1201         }
1202
1203         CDEBUG(D_NET, "Ping %d nodes in session\n", count);
1204
1205         ptimer->stt_expires = (cfs_time_t)(cfs_time_current_sec() + LST_PING_INTERVAL);
1206         stt_add_timer(ptimer);
1207
1208         mutex_up(&console_session.ses_mutex);
1209 }
1210
1211 int
1212 lstcon_rpc_pinger_start(void)
1213 {
1214         stt_timer_t    *ptimer;
1215         int             rc;
1216
1217         LASSERT (list_empty(&console_session.ses_rpc_freelist));
1218         LASSERT (atomic_read(&console_session.ses_rpc_counter) == 0);
1219
1220         rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1221                                    &console_session.ses_ping);
1222         if (rc != 0) {
1223                 CERROR("Failed to create console pinger\n");
1224                 return rc;
1225         }
1226
1227         ptimer = &console_session.ses_ping_timer;
1228         ptimer->stt_expires = (cfs_time_t)(cfs_time_current_sec() + LST_PING_INTERVAL);
1229
1230         stt_add_timer(ptimer);
1231
1232         return 0;
1233 }
1234
1235 void
1236 lstcon_rpc_pinger_stop(void)
1237 {
1238         LASSERT (console_session.ses_shutdown);
1239
1240         stt_del_timer(&console_session.ses_ping_timer);
1241
1242         lstcon_rpc_trans_abort(console_session.ses_ping, -ESHUTDOWN);
1243         lstcon_rpc_trans_stat(console_session.ses_ping, lstcon_trans_stat());
1244         lstcon_rpc_trans_destroy(console_session.ses_ping);
1245
1246         memset(lstcon_trans_stat(), 0, sizeof(lstcon_trans_stat_t));
1247
1248         console_session.ses_ping = NULL;
1249 }
1250
1251 void
1252 lstcon_rpc_cleanup_wait(void)
1253 {
1254         lstcon_rpc_trans_t *trans;
1255         lstcon_rpc_t       *crpc;
1256         struct list_head   *pacer;
1257         struct list_head    zlist;
1258
1259         /* Called with hold of global mutex */
1260
1261         LASSERT (console_session.ses_shutdown);
1262
1263         while (!list_empty(&console_session.ses_trans_list)) {
1264                 list_for_each(pacer, &console_session.ses_trans_list) {
1265                         trans = list_entry(pacer, lstcon_rpc_trans_t, tas_link);
1266
1267                         CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1268                                lstcon_rpc_trans_name(trans->tas_opc));
1269
1270                         cfs_waitq_signal(&trans->tas_waitq);
1271                 }
1272
1273                 mutex_up(&console_session.ses_mutex);
1274
1275                 CWARN("Session is shutting down, "
1276                       "waiting for termination of transactions\n");
1277                 cfs_pause(cfs_time_seconds(1));
1278
1279                 mutex_down(&console_session.ses_mutex);
1280         }
1281
1282         spin_lock(&console_session.ses_rpc_lock);
1283
1284         lst_wait_until((atomic_read(&console_session.ses_rpc_counter) == 0),
1285                        console_session.ses_rpc_lock,
1286                        "Network is not accessable or target is down, "
1287                        "waiting for %d console RPCs to being recycled\n",
1288                        atomic_read(&console_session.ses_rpc_counter));
1289
1290         list_add(&zlist, &console_session.ses_rpc_freelist);
1291         list_del_init(&console_session.ses_rpc_freelist);
1292
1293         spin_unlock(&console_session.ses_rpc_lock);
1294
1295         while (!list_empty(&zlist)) {
1296                 crpc = list_entry(zlist.next, lstcon_rpc_t, crp_link);
1297
1298                 list_del(&crpc->crp_link);
1299                 LIBCFS_FREE(crpc, sizeof(lstcon_rpc_t));
1300         }
1301 }
1302
1303 int
1304 lstcon_rpc_module_init(void)
1305 {
1306         CFS_INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1307         console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1308         console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1309
1310         console_session.ses_ping = NULL;
1311
1312         spin_lock_init(&console_session.ses_rpc_lock);
1313         atomic_set(&console_session.ses_rpc_counter, 0);
1314         CFS_INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1315
1316         return 0;
1317 }
1318
1319 void
1320 lstcon_rpc_module_fini(void)
1321 {
1322         LASSERT (list_empty(&console_session.ses_rpc_freelist));
1323         LASSERT (atomic_read(&console_session.ses_rpc_counter) == 0);
1324 }
1325
1326 #endif