lnet/selftest/conrpc.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, Whamcloud, Inc.
  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         cfs_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                 cfs_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 (cfs_atomic_dec_and_test(&crpc->crp_trans->tas_remaining))
  87                 cfs_waitq_signal(&crpc->crp_trans->tas_waitq);
  88
  89         cfs_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         cfs_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         cfs_spin_lock(&console_session.ses_rpc_lock);
 126
 127         if (!cfs_list_empty(&console_session.ses_rpc_freelist)) {
 128                 crpc = cfs_list_entry(console_session.ses_rpc_freelist.next,
 129                                       lstcon_rpc_t, crp_link);
 130                 cfs_list_del_init(&crpc->crp_link);
 131         }
 132
 133         cfs_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 (cfs_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                 cfs_spin_lock(&console_session.ses_rpc_lock);
 176
 177                 cfs_list_add(&crpc->crp_link,
 178                              &console_session.ses_rpc_freelist);
 179
 180                 cfs_spin_unlock(&console_session.ses_rpc_lock);
 181         }
 182
 183         /* RPC is not alive now */
 184         cfs_atomic_dec(&console_session.ses_rpc_counter);
 185 }
 186
 187 void
 188 lstcon_rpc_post(lstcon_rpc_t *crpc)
 189 {
 190         lstcon_rpc_trans_t *trans = crpc->crp_trans;
 191
 192         LASSERT (trans != NULL);
 193
 194         cfs_atomic_inc(&trans->tas_remaining);
 195         crpc->crp_posted = 1;
 196
 197         sfw_post_rpc(crpc->crp_rpc);
 198 }
 199
 200 static char *
 201 lstcon_rpc_trans_name(int transop)
 202 {
 203         if (transop == LST_TRANS_SESNEW)
 204                 return "SESNEW";
 205
 206         if (transop == LST_TRANS_SESEND)
 207                 return "SESEND";
 208
 209         if (transop == LST_TRANS_SESQRY)
 210                 return "SESQRY";
 211
 212         if (transop == LST_TRANS_SESPING)
 213                 return "SESPING";
 214
 215         if (transop == LST_TRANS_TSBCLIADD)
 216                 return "TSBCLIADD";
 217
 218         if (transop == LST_TRANS_TSBSRVADD)
 219                 return "TSBSRVADD";
 220
 221         if (transop == LST_TRANS_TSBRUN)
 222                 return "TSBRUN";
 223
 224         if (transop == LST_TRANS_TSBSTOP)
 225                 return "TSBSTOP";
 226
 227         if (transop == LST_TRANS_TSBCLIQRY)
 228                 return "TSBCLIQRY";
 229
 230         if (transop == LST_TRANS_TSBSRVQRY)
 231                 return "TSBSRVQRY";
 232
 233         if (transop == LST_TRANS_STATQRY)
 234                 return "STATQRY";
 235
 236         return "Unknown";
 237 }
 238
 239 int
 240 lstcon_rpc_trans_prep(cfs_list_t *translist,
 241                       int transop, lstcon_rpc_trans_t **transpp)
 242 {
 243         lstcon_rpc_trans_t *trans;
 244
 245         if (translist != NULL) {
 246                 cfs_list_for_each_entry_typed(trans, translist,
 247                                               lstcon_rpc_trans_t, tas_link) {
 248                         /* Can't enqueue two private transaction on
 249                          * the same object */
 250                         if ((trans->tas_opc & transop) == LST_TRANS_PRIVATE)
 251                                 return -EPERM;
 252                 }
 253         }
 254
 255         /* create a trans group */
 256         LIBCFS_ALLOC(trans, sizeof(*trans));
 257         if (trans == NULL)
 258                 return -ENOMEM;
 259
 260         trans->tas_opc = transop;
 261
 262         if (translist == NULL)
 263                 CFS_INIT_LIST_HEAD(&trans->tas_olink);
 264         else
 265                 cfs_list_add_tail(&trans->tas_olink, translist);
 266
 267         cfs_list_add_tail(&trans->tas_link, &console_session.ses_trans_list);
 268
 269         CFS_INIT_LIST_HEAD(&trans->tas_rpcs_list);
 270         cfs_atomic_set(&trans->tas_remaining, 0);
 271         cfs_waitq_init(&trans->tas_waitq);
 272
 273         *transpp = trans;
 274
 275         return 0;
 276 }
 277
 278 void
 279 lstcon_rpc_trans_addreq(lstcon_rpc_trans_t *trans, lstcon_rpc_t *crpc)
 280 {
 281         cfs_list_add_tail(&crpc->crp_link, &trans->tas_rpcs_list);
 282         crpc->crp_trans = trans;
 283 }
 284
 285 void
 286 lstcon_rpc_trans_abort(lstcon_rpc_trans_t *trans, int error)
 287 {
 288         srpc_client_rpc_t *rpc;
 289         lstcon_rpc_t      *crpc;
 290         lstcon_node_t     *nd;
 291
 292         cfs_list_for_each_entry_typed (crpc, &trans->tas_rpcs_list,
 293                                        lstcon_rpc_t, crp_link) {
 294                 rpc = crpc->crp_rpc;
 295
 296                 cfs_spin_lock(&rpc->crpc_lock);
 297
 298                 if (!crpc->crp_posted || /* not posted */
 299                     crpc->crp_stamp != 0) { /* rpc done or aborted already */
 300                         if (crpc->crp_stamp == 0) {
 301                                 crpc->crp_stamp = cfs_time_current();
 302                                 crpc->crp_status = -EINTR;
 303                         }
 304                         cfs_spin_unlock(&rpc->crpc_lock);
 305                         continue;
 306                 }
 307
 308                 crpc->crp_stamp  = cfs_time_current();
 309                 crpc->crp_status = error;
 310
 311                 cfs_spin_unlock(&rpc->crpc_lock);
 312
 313                 sfw_abort_rpc(rpc);
 314
 315                 if  (error != ETIMEDOUT)
 316                         continue;
 317
 318                 nd = crpc->crp_node;
 319                 if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 320                         continue;
 321
 322                 nd->nd_stamp = crpc->crp_stamp;
 323                 nd->nd_state = LST_NODE_DOWN;
 324         }
 325 }
 326
 327 static int
 328 lstcon_rpc_trans_check(lstcon_rpc_trans_t *trans)
 329 {
 330         if (console_session.ses_shutdown &&
 331             !cfs_list_empty(&trans->tas_olink)) /* Not an end session RPC */
 332                 return 1;
 333
 334         return (cfs_atomic_read(&trans->tas_remaining) == 0) ? 1: 0;
 335 }
 336
 337 int
 338 lstcon_rpc_trans_postwait(lstcon_rpc_trans_t *trans, int timeout)
 339 {
 340         lstcon_rpc_t  *crpc;
 341         int            rc;
 342
 343         if (cfs_list_empty(&trans->tas_rpcs_list))
 344                 return 0;
 345
 346         if (timeout < LST_TRANS_MIN_TIMEOUT)
 347                 timeout = LST_TRANS_MIN_TIMEOUT;
 348
 349         CDEBUG(D_NET, "Transaction %s started\n",
 350                lstcon_rpc_trans_name(trans->tas_opc));
 351
 352         /* post all requests */
 353         cfs_list_for_each_entry_typed (crpc, &trans->tas_rpcs_list,
 354                                        lstcon_rpc_t, crp_link) {
 355                 LASSERT (!crpc->crp_posted);
 356
 357                 lstcon_rpc_post(crpc);
 358         }
 359
 360         cfs_mutex_unlock(&console_session.ses_mutex);
 361
 362         cfs_waitq_wait_event_interruptible_timeout(trans->tas_waitq,
 363                                               lstcon_rpc_trans_check(trans),
 364                                               cfs_time_seconds(timeout), rc);
 365
 366         rc = (rc > 0)? 0: ((rc < 0)? -EINTR: -ETIMEDOUT);
 367
 368         cfs_mutex_lock(&console_session.ses_mutex);
 369
 370         if (console_session.ses_shutdown)
 371                 rc = -ESHUTDOWN;
 372
 373         if (rc != 0 || atomic_read(&trans->tas_remaining) != 0) {
 374                 /* treat short timeout as canceled */
 375                 if (rc == -ETIMEDOUT && timeout < LST_TRANS_MIN_TIMEOUT * 2)
 376                         rc = -EINTR;
 377
 378                 lstcon_rpc_trans_abort(trans, rc);
 379         }
 380
 381         CDEBUG(D_NET, "Transaction %s stopped: %d\n",
 382                lstcon_rpc_trans_name(trans->tas_opc), rc);
 383
 384         lstcon_rpc_trans_stat(trans, lstcon_trans_stat());
 385
 386         return rc;
 387 }
 388
 389 int
 390 lstcon_rpc_get_reply(lstcon_rpc_t *crpc, srpc_msg_t **msgpp)
 391 {
 392         lstcon_node_t        *nd  = crpc->crp_node;
 393         srpc_client_rpc_t    *rpc = crpc->crp_rpc;
 394         srpc_generic_reply_t *rep;
 395
 396         LASSERT (nd != NULL && rpc != NULL);
 397         LASSERT (crpc->crp_stamp != 0);
 398
 399         if (crpc->crp_status != 0) {
 400                 *msgpp = NULL;
 401                 return crpc->crp_status;
 402         }
 403
 404         *msgpp = &rpc->crpc_replymsg;
 405         if (!crpc->crp_unpacked) {
 406                 sfw_unpack_message(*msgpp);
 407                 crpc->crp_unpacked = 1;
 408         }
 409
 410         if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 411                 return 0;
 412
 413         nd->nd_stamp = crpc->crp_stamp;
 414         rep = &(*msgpp)->msg_body.reply;
 415
 416         if (rep->sid.ses_nid == LNET_NID_ANY)
 417                 nd->nd_state = LST_NODE_UNKNOWN;
 418         else if (lstcon_session_match(rep->sid))
 419                 nd->nd_state = LST_NODE_ACTIVE;
 420         else
 421                 nd->nd_state = LST_NODE_BUSY;
 422
 423         return 0;
 424 }
 425
 426 void
 427 lstcon_rpc_trans_stat(lstcon_rpc_trans_t *trans, lstcon_trans_stat_t *stat)
 428 {
 429         lstcon_rpc_t      *crpc;
 430         srpc_msg_t        *rep;
 431         int                error;
 432
 433         LASSERT (stat != NULL);
 434
 435         memset(stat, 0, sizeof(*stat));
 436
 437         cfs_list_for_each_entry_typed(crpc, &trans->tas_rpcs_list,
 438                                       lstcon_rpc_t, crp_link) {
 439                 lstcon_rpc_stat_total(stat, 1);
 440
 441                 LASSERT (crpc->crp_stamp != 0);
 442
 443                 error = lstcon_rpc_get_reply(crpc, &rep);
 444                 if (error != 0) {
 445                         lstcon_rpc_stat_failure(stat, 1);
 446                         if (stat->trs_rpc_errno == 0)
 447                                 stat->trs_rpc_errno = -error;
 448
 449                         continue;
 450                 }
 451
 452                 lstcon_rpc_stat_success(stat, 1);
 453
 454                 lstcon_rpc_stat_reply(trans->tas_opc, rep,
 455                                       crpc->crp_node, stat);
 456         }
 457
 458         CDEBUG(D_NET, "transaction %s : success %d, failure %d, total %d, "
 459                       "RPC error(%d), Framework error(%d)\n",
 460                lstcon_rpc_trans_name(trans->tas_opc),
 461                lstcon_rpc_stat_success(stat, 0),
 462                lstcon_rpc_stat_failure(stat, 0),
 463                lstcon_rpc_stat_total(stat, 0),
 464                stat->trs_rpc_errno, stat->trs_fwk_errno);
 465
 466         return;
 467 }
 468
 469 int
 470 lstcon_rpc_trans_interpreter(lstcon_rpc_trans_t *trans,
 471                              cfs_list_t *head_up,
 472                              lstcon_rpc_readent_func_t readent)
 473 {
 474         cfs_list_t            tmp;
 475         cfs_list_t           *next;
 476         lstcon_rpc_ent_t     *ent;
 477         srpc_generic_reply_t *rep;
 478         lstcon_rpc_t         *crpc;
 479         srpc_msg_t           *msg;
 480         lstcon_node_t        *nd;
 481         cfs_duration_t        dur;
 482         struct timeval        tv;
 483         int                   error;
 484
 485         LASSERT (head_up != NULL);
 486
 487         next = head_up;
 488
 489         cfs_list_for_each_entry_typed(crpc, &trans->tas_rpcs_list,
 490                                       lstcon_rpc_t, crp_link) {
 491                 if (cfs_copy_from_user(&tmp, next,
 492                                        sizeof(cfs_list_t)))
 493                         return -EFAULT;
 494
 495                 if (tmp.next == head_up)
 496                         return 0;
 497
 498                 next = tmp.next;
 499
 500                 ent = cfs_list_entry(next, lstcon_rpc_ent_t, rpe_link);
 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 (cfs_copy_to_user(&ent->rpe_peer,
 513                                      &nd->nd_id, sizeof(lnet_process_id_t)) ||
 514                     cfs_copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
 515                     cfs_copy_to_user(&ent->rpe_state,
 516                                      &nd->nd_state, sizeof(nd->nd_state)) ||
 517                     cfs_copy_to_user(&ent->rpe_rpc_errno, &error,
 518                                      sizeof(error)))
 519                         return -EFAULT;
 520
 521                 if (error != 0)
 522                         continue;
 523
 524                 /* RPC is done */
 525                 rep = (srpc_generic_reply_t *)&msg->msg_body.reply;
 526
 527                 if (cfs_copy_to_user(&ent->rpe_sid,
 528                                      &rep->sid, sizeof(lst_sid_t)) ||
 529                     cfs_copy_to_user(&ent->rpe_fwk_errno,
 530                                      &rep->status, sizeof(rep->status)))
 531                         return -EFAULT;
 532
 533                 if (readent == NULL)
 534                         continue;
 535
 536                 if ((error = readent(trans->tas_opc, msg, ent)) != 0)
 537                         return error;
 538         }
 539
 540         return 0;
 541 }
 542
 543 void
 544 lstcon_rpc_trans_destroy(lstcon_rpc_trans_t *trans)
 545 {
 546         srpc_client_rpc_t *rpc;
 547         lstcon_rpc_t      *crpc;
 548         lstcon_rpc_t      *tmp;
 549         int                count = 0;
 550
 551         cfs_list_for_each_entry_safe_typed(crpc, tmp,
 552                                            &trans->tas_rpcs_list,
 553                                            lstcon_rpc_t, crp_link) {
 554                 rpc = crpc->crp_rpc;
 555
 556                 cfs_spin_lock(&rpc->crpc_lock);
 557
 558                 /* free it if not posted or finished already */
 559                 if (!crpc->crp_posted || crpc->crp_finished) {
 560                         cfs_spin_unlock(&rpc->crpc_lock);
 561
 562                         cfs_list_del_init(&crpc->crp_link);
 563                         lstcon_rpc_put(crpc);
 564
 565                         continue;
 566                 }
 567
 568                 /* rpcs can be still not callbacked (even LNetMDUnlink is called)
 569                  * because huge timeout for inaccessible network, don't make
 570                  * user wait for them, just abandon them, they will be recycled
 571                  * in callback */
 572
 573                 LASSERT (crpc->crp_status != 0);
 574
 575                 crpc->crp_node  = NULL;
 576                 crpc->crp_trans = NULL;
 577                 cfs_list_del_init(&crpc->crp_link);
 578                 count ++;
 579
 580                 cfs_spin_unlock(&rpc->crpc_lock);
 581
 582                 cfs_atomic_dec(&trans->tas_remaining);
 583         }
 584
 585         LASSERT (cfs_atomic_read(&trans->tas_remaining) == 0);
 586
 587         cfs_list_del(&trans->tas_link);
 588         if (!cfs_list_empty(&trans->tas_olink))
 589                 cfs_list_del(&trans->tas_olink);
 590
 591         CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
 592                lstcon_rpc_trans_name(trans->tas_opc), count);
 593
 594         LIBCFS_FREE(trans, sizeof(*trans));
 595
 596         return;
 597 }
 598
 599 int
 600 lstcon_sesrpc_prep(lstcon_node_t *nd, int transop, lstcon_rpc_t **crpc)
 601 {
 602         srpc_mksn_reqst_t *msrq;
 603         srpc_rmsn_reqst_t *rsrq;
 604         int                rc;
 605
 606         switch (transop) {
 607         case LST_TRANS_SESNEW:
 608                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_MAKE_SESSION, 0, crpc);
 609                 if (rc != 0)
 610                         return rc;
 611
 612                 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 613                 msrq->mksn_sid     = console_session.ses_id;
 614                 msrq->mksn_force   = console_session.ses_force;
 615                 strncpy(msrq->mksn_name, console_session.ses_name,
 616                         strlen(console_session.ses_name));
 617                 break;
 618
 619         case LST_TRANS_SESEND:
 620                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION, 0, crpc);
 621                 if (rc != 0)
 622                         return rc;
 623
 624                 rsrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.rmsn_reqst;
 625                 rsrq->rmsn_sid = console_session.ses_id;
 626                 break;
 627
 628         default:
 629                 LBUG();
 630         }
 631
 632         return 0;
 633 }
 634
 635 int
 636 lstcon_dbgrpc_prep(lstcon_node_t *nd, lstcon_rpc_t **crpc)
 637 {
 638         srpc_debug_reqst_t *drq;
 639         int                 rc;
 640
 641         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_DEBUG, 0, crpc);
 642         if (rc != 0)
 643                 return rc;
 644
 645         drq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
 646
 647         drq->dbg_sid   = console_session.ses_id;
 648         drq->dbg_flags = 0;
 649
 650         return rc;
 651 }
 652
 653 int
 654 lstcon_batrpc_prep(lstcon_node_t *nd, int transop,
 655                    lstcon_tsb_hdr_t *tsb, lstcon_rpc_t **crpc)
 656 {
 657         lstcon_batch_t     *batch;
 658         srpc_batch_reqst_t *brq;
 659         int                 rc;
 660
 661         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_BATCH, 0, crpc);
 662         if (rc != 0)
 663                 return rc;
 664
 665         brq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.bat_reqst;
 666
 667         brq->bar_sid     = console_session.ses_id;
 668         brq->bar_bid     = tsb->tsb_id;
 669         brq->bar_testidx = tsb->tsb_index;
 670         brq->bar_opc     = transop == LST_TRANS_TSBRUN ? SRPC_BATCH_OPC_RUN :
 671                            (transop == LST_TRANS_TSBSTOP ? SRPC_BATCH_OPC_STOP:
 672                             SRPC_BATCH_OPC_QUERY);
 673
 674         if (transop != LST_TRANS_TSBRUN &&
 675             transop != LST_TRANS_TSBSTOP)
 676                 return 0;
 677
 678         LASSERT (tsb->tsb_index == 0);
 679
 680         batch = (lstcon_batch_t *)tsb;
 681         brq->bar_arg = batch->bat_arg;
 682
 683         return 0;
 684 }
 685
 686 int
 687 lstcon_statrpc_prep(lstcon_node_t *nd, lstcon_rpc_t **crpc)
 688 {
 689         srpc_stat_reqst_t *srq;
 690         int                rc;
 691
 692         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_QUERY_STAT, 0, crpc);
 693         if (rc != 0)
 694                 return rc;
 695
 696         srq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.stat_reqst;
 697
 698         srq->str_sid  = console_session.ses_id;
 699         srq->str_type = 0; /* XXX remove it */
 700
 701         return 0;
 702 }
 703
 704 lnet_process_id_packed_t *
 705 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
 706 {
 707         lnet_process_id_packed_t *pid;
 708         int                       i;
 709
 710         i = idx / SFW_ID_PER_PAGE;
 711
 712         LASSERT (i < nkiov);
 713
 714         pid = (lnet_process_id_packed_t *)cfs_page_address(kiov[i].kiov_page);
 715
 716         return &pid[idx % SFW_ID_PER_PAGE];
 717 }
 718
 719 int
 720 lstcon_dstnodes_prep(lstcon_group_t *grp, int idx,
 721                      int dist, int span, int nkiov, lnet_kiov_t *kiov)
 722 {
 723         lnet_process_id_packed_t *pid;
 724         lstcon_ndlink_t          *ndl;
 725         lstcon_node_t            *nd;
 726         int                       start;
 727         int                       end;
 728         int                       i = 0;
 729
 730         LASSERT (dist >= 1);
 731         LASSERT (span >= 1);
 732         LASSERT (grp->grp_nnode >= 1);
 733
 734         if (span > grp->grp_nnode)
 735                 return -EINVAL;
 736
 737         start = ((idx / dist) * span) % grp->grp_nnode;
 738         end   = ((idx / dist) * span + span - 1) % grp->grp_nnode;
 739
 740         cfs_list_for_each_entry_typed(ndl, &grp->grp_ndl_list,
 741                                       lstcon_ndlink_t, ndl_link) {
 742                 nd = ndl->ndl_node;
 743                 if (i < start) {
 744                         i ++;
 745                         continue;
 746                 }
 747
 748                 if (i > (end >= start ? end: grp->grp_nnode))
 749                         break;
 750
 751                 pid = lstcon_next_id((i - start), nkiov, kiov);
 752                 pid->nid = nd->nd_id.nid;
 753                 pid->pid = nd->nd_id.pid;
 754                 i++;
 755         }
 756
 757         if (start <= end) /* done */
 758                 return 0;
 759
 760         cfs_list_for_each_entry_typed(ndl, &grp->grp_ndl_list,
 761                                       lstcon_ndlink_t, ndl_link) {
 762                 if (i > grp->grp_nnode + end)
 763                         break;
 764
 765                 nd = ndl->ndl_node;
 766                 pid = lstcon_next_id((i - start), nkiov, kiov);
 767                 pid->nid = nd->nd_id.nid;
 768                 pid->pid = nd->nd_id.pid;
 769                 i++;
 770         }
 771
 772         return 0;
 773 }
 774
 775 int
 776 lstcon_pingrpc_prep(lst_test_ping_param_t *param, srpc_test_reqst_t *req)
 777 {
 778         test_ping_req_t *prq = &req->tsr_u.ping;
 779
 780         prq->png_size   = param->png_size;
 781         prq->png_flags  = param->png_flags;
 782         /* TODO dest */
 783         return 0;
 784 }
 785
 786 int
 787 lstcon_bulkrpc_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
 788 {
 789         test_bulk_req_t *brq = &req->tsr_u.bulk;
 790
 791         brq->blk_opc    = param->blk_opc;
 792         brq->blk_npg    = (param->blk_size + CFS_PAGE_SIZE - 1) / CFS_PAGE_SIZE;
 793         brq->blk_flags  = param->blk_flags;
 794
 795         return 0;
 796 }
 797
 798 int
 799 lstcon_testrpc_prep(lstcon_node_t *nd, int transop,
 800                     lstcon_test_t *test, lstcon_rpc_t **crpc)
 801 {
 802         lstcon_group_t    *sgrp = test->tes_src_grp;
 803         lstcon_group_t    *dgrp = test->tes_dst_grp;
 804         srpc_test_reqst_t *trq;
 805         srpc_bulk_t       *bulk;
 806         int                i;
 807         int                n  = 0;
 808         int                rc = 0;
 809
 810         if (transop == LST_TRANS_TSBCLIADD)
 811                 n = sfw_id_pages(test->tes_span);
 812
 813         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_TEST, n, crpc);
 814         if (rc != 0)
 815                 return rc;
 816
 817         trq  = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.tes_reqst;
 818
 819         if (transop == LST_TRANS_TSBSRVADD) {
 820                 int ndist = (sgrp->grp_nnode + test->tes_dist - 1) / test->tes_dist;
 821                 int nspan = (dgrp->grp_nnode + test->tes_span - 1) / test->tes_span;
 822                 int nmax = (ndist + nspan - 1) / nspan;
 823
 824                 trq->tsr_ndest = 0;
 825                 trq->tsr_loop  = nmax * test->tes_dist * test->tes_concur;
 826
 827         } else {
 828                 bulk = &(*crpc)->crp_rpc->crpc_bulk;
 829
 830                 for (i = 0; i < n; i++) {
 831                         bulk->bk_iovs[i].kiov_offset = 0;
 832                         bulk->bk_iovs[i].kiov_len    = CFS_PAGE_SIZE;
 833                         bulk->bk_iovs[i].kiov_page   = cfs_alloc_page(CFS_ALLOC_STD);
 834
 835                         if (bulk->bk_iovs[i].kiov_page != NULL)
 836                                 continue;
 837
 838                         lstcon_rpc_put(*crpc);
 839                         return -ENOMEM;
 840                 }
 841
 842                 bulk->bk_sink = 0;
 843
 844                 LASSERT (transop == LST_TRANS_TSBCLIADD);
 845
 846                 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
 847                                           test->tes_cliidx++, test->tes_dist,
 848                                           test->tes_span, n, &bulk->bk_iovs[0]);
 849                 if (rc != 0) {
 850                         lstcon_rpc_put(*crpc);
 851                         return rc;
 852                 }
 853
 854                 trq->tsr_ndest = test->tes_span;
 855                 trq->tsr_loop  = test->tes_loop;
 856         }
 857
 858         trq->tsr_sid        = console_session.ses_id;
 859         trq->tsr_bid        = test->tes_hdr.tsb_id;
 860         trq->tsr_concur     = test->tes_concur;
 861         trq->tsr_is_client  = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
 862         trq->tsr_stop_onerr = !!test->tes_stop_onerr;
 863
 864         switch (test->tes_type) {
 865         case LST_TEST_PING:
 866                 trq->tsr_service = SRPC_SERVICE_PING;
 867                 rc = lstcon_pingrpc_prep((lst_test_ping_param_t *)&test->tes_param[0], trq);
 868                 break;
 869         case LST_TEST_BULK:
 870                 trq->tsr_service = SRPC_SERVICE_BRW;
 871                 rc = lstcon_bulkrpc_prep((lst_test_bulk_param_t *)&test->tes_param[0], trq);
 872                 break;
 873         default:
 874                 LBUG();
 875                 break;
 876         }
 877
 878         return rc;
 879 }
 880
 881 void
 882 lstcon_rpc_stat_reply(int transop, srpc_msg_t *msg,
 883                       lstcon_node_t *nd, lstcon_trans_stat_t *stat)
 884 {
 885         srpc_mksn_reply_t  *mksn_rep;
 886         srpc_rmsn_reply_t  *rmsn_rep;
 887         srpc_debug_reply_t *dbg_rep;
 888         srpc_batch_reply_t *bat_rep;
 889         srpc_test_reply_t  *test_rep;
 890         srpc_stat_reply_t  *stat_rep;
 891         int                 rc = 0;
 892
 893         switch (transop) {
 894         case LST_TRANS_SESNEW:
 895                 mksn_rep = &msg->msg_body.mksn_reply;
 896
 897                 if (mksn_rep->mksn_status == 0) {
 898                         lstcon_sesop_stat_success(stat, 1);
 899                         /* session timeout on remote node */
 900                         nd->nd_timeout = mksn_rep->mksn_timeout;
 901                         return;
 902                 }
 903
 904                 LASSERT (mksn_rep->mksn_status == EBUSY ||
 905                          mksn_rep->mksn_status == EINVAL);
 906
 907                 lstcon_sesop_stat_failure(stat, 1);
 908                 rc = mksn_rep->mksn_status;
 909                 break;
 910
 911         case LST_TRANS_SESEND:
 912                 rmsn_rep = &msg->msg_body.rmsn_reply;
 913                 /* ESRCH is not an error for end session */
 914                 if (rmsn_rep->rmsn_status == 0 ||
 915                     rmsn_rep->rmsn_status == ESRCH) {
 916                         lstcon_sesop_stat_success(stat, 1);
 917                         return;
 918                 }
 919
 920                 LASSERT (rmsn_rep->rmsn_status == EBUSY ||
 921                          rmsn_rep->rmsn_status == EINVAL);
 922
 923                 lstcon_sesop_stat_failure(stat, 1);
 924                 rc = rmsn_rep->rmsn_status;
 925                 break;
 926
 927         case LST_TRANS_SESQRY:
 928         case LST_TRANS_SESPING:
 929                 dbg_rep = &msg->msg_body.dbg_reply;
 930
 931                 if (dbg_rep->dbg_status == ESRCH) {
 932                         lstcon_sesqry_stat_unknown(stat, 1);
 933                         return;
 934                 }
 935
 936                 LASSERT (dbg_rep->dbg_status == 0);
 937
 938                 if (lstcon_session_match(dbg_rep->dbg_sid))
 939                         lstcon_sesqry_stat_active(stat, 1);
 940                 else
 941                         lstcon_sesqry_stat_busy(stat, 1);
 942                 return;
 943
 944         case LST_TRANS_TSBRUN:
 945         case LST_TRANS_TSBSTOP:
 946                 bat_rep = &msg->msg_body.bat_reply;
 947
 948                 if (bat_rep->bar_status == 0) {
 949                         lstcon_tsbop_stat_success(stat, 1);
 950                         return;
 951                 }
 952
 953                 if (bat_rep->bar_status == EPERM &&
 954                     transop == LST_TRANS_TSBSTOP) {
 955                         lstcon_tsbop_stat_success(stat, 1);
 956                         return;
 957                 }
 958
 959                 lstcon_tsbop_stat_failure(stat, 1);
 960                 rc = bat_rep->bar_status;
 961                 break;
 962
 963         case LST_TRANS_TSBCLIQRY:
 964         case LST_TRANS_TSBSRVQRY:
 965                 bat_rep = &msg->msg_body.bat_reply;
 966
 967                 if (bat_rep->bar_active != 0)
 968                         lstcon_tsbqry_stat_run(stat, 1);
 969                 else
 970                         lstcon_tsbqry_stat_idle(stat, 1);
 971
 972                 if (bat_rep->bar_status == 0)
 973                         return;
 974
 975                 lstcon_tsbqry_stat_failure(stat, 1);
 976                 rc = bat_rep->bar_status;
 977                 break;
 978
 979         case LST_TRANS_TSBCLIADD:
 980         case LST_TRANS_TSBSRVADD:
 981                 test_rep = &msg->msg_body.tes_reply;
 982
 983                 if (test_rep->tsr_status == 0) {
 984                         lstcon_tsbop_stat_success(stat, 1);
 985                         return;
 986                 }
 987
 988                 lstcon_tsbop_stat_failure(stat, 1);
 989                 rc = test_rep->tsr_status;
 990                 break;
 991
 992         case LST_TRANS_STATQRY:
 993                 stat_rep = &msg->msg_body.stat_reply;
 994
 995                 if (stat_rep->str_status == 0) {
 996                         lstcon_statqry_stat_success(stat, 1);
 997                         return;
 998                 }
 999
1000                 lstcon_statqry_stat_failure(stat, 1);
1001                 rc = stat_rep->str_status;
1002                 break;
1003
1004         default:
1005                 LBUG();
1006         }
1007
1008         if (stat->trs_fwk_errno == 0)
1009                 stat->trs_fwk_errno = rc;
1010
1011         return;
1012 }
1013
1014 int
1015 lstcon_rpc_trans_ndlist(cfs_list_t *ndlist,
1016                         cfs_list_t *translist, int transop,
1017                         void *arg, lstcon_rpc_cond_func_t condition,
1018                         lstcon_rpc_trans_t **transpp)
1019 {
1020         lstcon_rpc_trans_t *trans;
1021         lstcon_ndlink_t    *ndl;
1022         lstcon_node_t      *nd;
1023         lstcon_rpc_t       *rpc;
1024         int                 rc;
1025
1026         /* Creating session RPG for list of nodes */
1027
1028         rc = lstcon_rpc_trans_prep(translist, transop, &trans);
1029         if (rc != 0) {
1030                 CERROR("Can't create transaction %d: %d\n", transop, rc);
1031                 return rc;
1032         }
1033
1034         cfs_list_for_each_entry_typed(ndl, ndlist, lstcon_ndlink_t, ndl_link) {
1035                 rc = condition == NULL ? 1 :
1036                      condition(transop, ndl->ndl_node, arg);
1037
1038                 if (rc == 0)
1039                         continue;
1040
1041                 if (rc < 0) {
1042                         CDEBUG(D_NET, "Condition error while creating RPC "
1043                                       " for transaction %d: %d\n", transop, rc);
1044                         break;
1045                 }
1046
1047                 nd = ndl->ndl_node;
1048
1049                 switch (transop) {
1050                 case LST_TRANS_SESNEW:
1051                 case LST_TRANS_SESEND:
1052                         rc = lstcon_sesrpc_prep(nd, transop, &rpc);
1053                         break;
1054                 case LST_TRANS_SESQRY:
1055                 case LST_TRANS_SESPING:
1056                         rc = lstcon_dbgrpc_prep(nd, &rpc);
1057                         break;
1058                 case LST_TRANS_TSBCLIADD:
1059                 case LST_TRANS_TSBSRVADD:
1060                         rc = lstcon_testrpc_prep(nd, transop,
1061                                                  (lstcon_test_t *)arg, &rpc);
1062                         break;
1063                 case LST_TRANS_TSBRUN:
1064                 case LST_TRANS_TSBSTOP:
1065                 case LST_TRANS_TSBCLIQRY:
1066                 case LST_TRANS_TSBSRVQRY:
1067                         rc = lstcon_batrpc_prep(nd, transop,
1068                                                 (lstcon_tsb_hdr_t *)arg, &rpc);
1069                         break;
1070                 case LST_TRANS_STATQRY:
1071                         rc = lstcon_statrpc_prep(nd, &rpc);
1072                         break;
1073                 default:
1074                         rc = -EINVAL;
1075                         break;
1076                 }
1077
1078                 if (rc != 0) {
1079                         CERROR("Failed to create RPC for transaction %s: %d\n",
1080                                lstcon_rpc_trans_name(transop), rc);
1081                         break;
1082                 }
1083
1084                 lstcon_rpc_trans_addreq(trans, rpc);
1085         }
1086
1087         if (rc == 0) {
1088                 *transpp = trans;
1089                 return 0;
1090         }
1091
1092         lstcon_rpc_trans_destroy(trans);
1093
1094         return rc;
1095 }
1096
1097 void
1098 lstcon_rpc_pinger(void *arg)
1099 {
1100         stt_timer_t        *ptimer = (stt_timer_t *)arg;
1101         lstcon_rpc_trans_t *trans;
1102         lstcon_rpc_t       *crpc;
1103         srpc_msg_t         *rep;
1104         srpc_debug_reqst_t *drq;
1105         lstcon_ndlink_t    *ndl;
1106         lstcon_node_t      *nd;
1107         time_t              intv;
1108         int                 count = 0;
1109         int                 rc;
1110
1111         /* RPC pinger is a special case of transaction,
1112          * it's called by timer at 8 seconds interval.
1113          */
1114         cfs_mutex_lock(&console_session.ses_mutex);
1115
1116         if (console_session.ses_shutdown || console_session.ses_expired) {
1117                 cfs_mutex_unlock(&console_session.ses_mutex);
1118                 return;
1119         }
1120
1121         if (!console_session.ses_expired &&
1122             cfs_time_current_sec() - console_session.ses_laststamp >
1123             (time_t)console_session.ses_timeout)
1124                 console_session.ses_expired = 1;
1125
1126         trans = console_session.ses_ping;
1127
1128         LASSERT (trans != NULL);
1129
1130         cfs_list_for_each_entry_typed(ndl, &console_session.ses_ndl_list,
1131                                       lstcon_ndlink_t, ndl_link) {
1132                 nd = ndl->ndl_node;
1133
1134                 if (console_session.ses_expired) {
1135                         /* idle console, end session on all nodes */
1136                         if (nd->nd_state != LST_NODE_ACTIVE)
1137                                 continue;
1138
1139                         rc = lstcon_sesrpc_prep(nd, LST_TRANS_SESEND, &crpc);
1140                         if (rc != 0) {
1141                                 CERROR("Out of memory\n");
1142                                 break;
1143                         }
1144
1145                         lstcon_rpc_trans_addreq(trans, crpc);
1146                         lstcon_rpc_post(crpc);
1147
1148                         continue;
1149                 }
1150
1151                 crpc = &nd->nd_ping;
1152
1153                 if (crpc->crp_rpc != NULL) {
1154                         LASSERT (crpc->crp_trans == trans);
1155                         LASSERT (!cfs_list_empty(&crpc->crp_link));
1156
1157                         cfs_spin_lock(&crpc->crp_rpc->crpc_lock);
1158
1159                         LASSERT (crpc->crp_posted);
1160
1161                         if (!crpc->crp_finished) {
1162                                 /* in flight */
1163                                 cfs_spin_unlock(&crpc->crp_rpc->crpc_lock);
1164                                 continue;
1165                         }
1166
1167                         cfs_spin_unlock(&crpc->crp_rpc->crpc_lock);
1168
1169                         lstcon_rpc_get_reply(crpc, &rep);
1170
1171                         cfs_list_del_init(&crpc->crp_link);
1172
1173                         lstcon_rpc_put(crpc);
1174                 }
1175
1176                 if (nd->nd_state != LST_NODE_ACTIVE)
1177                         continue;
1178
1179                 intv = cfs_duration_sec(cfs_time_sub(cfs_time_current(),
1180                                                      nd->nd_stamp));
1181                 if (intv < (time_t)nd->nd_timeout / 2)
1182                         continue;
1183
1184                 rc = lstcon_rpc_init(nd, SRPC_SERVICE_DEBUG, 0, 0, crpc);
1185                 if (rc != 0) {
1186                         CERROR("Out of memory\n");
1187                         break;
1188                 }
1189
1190                 drq = &crpc->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
1191
1192                 drq->dbg_sid   = console_session.ses_id;
1193                 drq->dbg_flags = 0;
1194
1195                 lstcon_rpc_trans_addreq(trans, crpc);
1196                 lstcon_rpc_post(crpc);
1197
1198                 count ++;
1199         }
1200
1201         if (console_session.ses_expired) {
1202                 cfs_mutex_unlock(&console_session.ses_mutex);
1203                 return;
1204         }
1205
1206         CDEBUG(D_NET, "Ping %d nodes in session\n", count);
1207
1208         ptimer->stt_expires = (cfs_time_t)(cfs_time_current_sec() + LST_PING_INTERVAL);
1209         stt_add_timer(ptimer);
1210
1211         cfs_mutex_unlock(&console_session.ses_mutex);
1212 }
1213
1214 int
1215 lstcon_rpc_pinger_start(void)
1216 {
1217         stt_timer_t    *ptimer;
1218         int             rc;
1219
1220         LASSERT (cfs_list_empty(&console_session.ses_rpc_freelist));
1221         LASSERT (cfs_atomic_read(&console_session.ses_rpc_counter) == 0);
1222
1223         rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1224                                    &console_session.ses_ping);
1225         if (rc != 0) {
1226                 CERROR("Failed to create console pinger\n");
1227                 return rc;
1228         }
1229
1230         ptimer = &console_session.ses_ping_timer;
1231         ptimer->stt_expires = (cfs_time_t)(cfs_time_current_sec() + LST_PING_INTERVAL);
1232
1233         stt_add_timer(ptimer);
1234
1235         return 0;
1236 }
1237
1238 void
1239 lstcon_rpc_pinger_stop(void)
1240 {
1241         LASSERT (console_session.ses_shutdown);
1242
1243         stt_del_timer(&console_session.ses_ping_timer);
1244
1245         lstcon_rpc_trans_abort(console_session.ses_ping, -ESHUTDOWN);
1246         lstcon_rpc_trans_stat(console_session.ses_ping, lstcon_trans_stat());
1247         lstcon_rpc_trans_destroy(console_session.ses_ping);
1248
1249         memset(lstcon_trans_stat(), 0, sizeof(lstcon_trans_stat_t));
1250
1251         console_session.ses_ping = NULL;
1252 }
1253
1254 void
1255 lstcon_rpc_cleanup_wait(void)
1256 {
1257         lstcon_rpc_trans_t *trans;
1258         lstcon_rpc_t       *crpc;
1259         cfs_list_t         *pacer;
1260         cfs_list_t          zlist;
1261
1262         /* Called with hold of global mutex */
1263
1264         LASSERT (console_session.ses_shutdown);
1265
1266         while (!cfs_list_empty(&console_session.ses_trans_list)) {
1267                 cfs_list_for_each(pacer, &console_session.ses_trans_list) {
1268                         trans = cfs_list_entry(pacer, lstcon_rpc_trans_t,
1269                                                tas_link);
1270
1271                         CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1272                                lstcon_rpc_trans_name(trans->tas_opc));
1273
1274                         cfs_waitq_signal(&trans->tas_waitq);
1275                 }
1276
1277                 cfs_mutex_unlock(&console_session.ses_mutex);
1278
1279                 CWARN("Session is shutting down, "
1280                       "waiting for termination of transactions\n");
1281                 cfs_pause(cfs_time_seconds(1));
1282
1283                 cfs_mutex_lock(&console_session.ses_mutex);
1284         }
1285
1286         cfs_spin_lock(&console_session.ses_rpc_lock);
1287
1288         lst_wait_until((cfs_atomic_read(&console_session.ses_rpc_counter) == 0),
1289                        console_session.ses_rpc_lock,
1290                        "Network is not accessable or target is down, "
1291                        "waiting for %d console RPCs to being recycled\n",
1292                        cfs_atomic_read(&console_session.ses_rpc_counter));
1293
1294         cfs_list_add(&zlist, &console_session.ses_rpc_freelist);
1295         cfs_list_del_init(&console_session.ses_rpc_freelist);
1296
1297         cfs_spin_unlock(&console_session.ses_rpc_lock);
1298
1299         while (!cfs_list_empty(&zlist)) {
1300                 crpc = cfs_list_entry(zlist.next, lstcon_rpc_t, crp_link);
1301
1302                 cfs_list_del(&crpc->crp_link);
1303                 LIBCFS_FREE(crpc, sizeof(lstcon_rpc_t));
1304         }
1305 }
1306
1307 int
1308 lstcon_rpc_module_init(void)
1309 {
1310         CFS_INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1311         console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1312         console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1313
1314         console_session.ses_ping = NULL;
1315
1316         cfs_spin_lock_init(&console_session.ses_rpc_lock);
1317         cfs_atomic_set(&console_session.ses_rpc_counter, 0);
1318         CFS_INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1319
1320         return 0;
1321 }
1322
1323 void
1324 lstcon_rpc_module_fini(void)
1325 {
1326         LASSERT (cfs_list_empty(&console_session.ses_rpc_freelist));
1327         LASSERT (cfs_atomic_read(&console_session.ses_rpc_counter) == 0);
1328 }
1329
1330 #endif