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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  *
  32  * Copyright (c) 2011, Whamcloud, Inc.
  33  */
  34 /*
  35  * This file is part of Lustre, http://www.lustre.org/
  36  * Lustre is a trademark of Sun Microsystems, Inc.
  37  *
  38  * lnet/selftest/conctl.c
  39  *
  40  * Console framework rpcs
  41  *
  42  * Author: Liang Zhen <liangzhen@clusterfs.com>
  43  */
  44
  45 #ifdef __KERNEL__
  46
  47 #include <libcfs/libcfs.h>
  48 #include <lnet/lib-lnet.h>
  49 #include "timer.h"
  50 #include "conrpc.h"
  51 #include "console.h"
  52
  53 void lstcon_rpc_stat_reply(int, srpc_msg_t *,
  54                            lstcon_node_t *, lstcon_trans_stat_t *);
  55
  56 static void
  57 lstcon_rpc_done(srpc_client_rpc_t *rpc)
  58 {
  59         lstcon_rpc_t *crpc = (lstcon_rpc_t *)rpc->crpc_priv;
  60
  61         LASSERT (crpc != NULL && rpc == crpc->crp_rpc);
  62         LASSERT (crpc->crp_posted && !crpc->crp_finished);
  63
  64         cfs_spin_lock(&rpc->crpc_lock);
  65
  66         if (crpc->crp_trans == NULL) {
  67                 /* Orphan RPC is not in any transaction,
  68                  * I'm just a poor body and nobody loves me */
  69                 cfs_spin_unlock(&rpc->crpc_lock);
  70
  71                 /* release it */
  72                 lstcon_rpc_put(crpc);
  73                 return;
  74         }
  75
  76         /* not an orphan RPC */
  77         crpc->crp_finished = 1;
  78
  79         if (crpc->crp_stamp == 0) {
  80                 /* not aborted */
  81                 LASSERT (crpc->crp_status == 0);
  82
  83                 crpc->crp_stamp  = cfs_time_current();
  84                 crpc->crp_status = rpc->crpc_status;
  85         }
  86
  87         /* wakeup (transaction)thread if I'm the last RPC in the transaction */
  88         if (cfs_atomic_dec_and_test(&crpc->crp_trans->tas_remaining))
  89                 cfs_waitq_signal(&crpc->crp_trans->tas_waitq);
  90
  91         cfs_spin_unlock(&rpc->crpc_lock);
  92 }
  93
  94 int
  95 lstcon_rpc_init(lstcon_node_t *nd, int service,
  96                 int npg, int cached, lstcon_rpc_t *crpc)
  97 {
  98
  99         crpc->crp_rpc = sfw_create_rpc(nd->nd_id, service,
 100                                        npg, npg * CFS_PAGE_SIZE,
 101                                        lstcon_rpc_done, (void *)crpc);
 102         if (crpc->crp_rpc == NULL)
 103                 return -ENOMEM;
 104
 105         crpc->crp_trans    = NULL;
 106         crpc->crp_node     = nd;
 107         crpc->crp_posted   = 0;
 108         crpc->crp_finished = 0;
 109         crpc->crp_unpacked = 0;
 110         crpc->crp_status   = 0;
 111         crpc->crp_stamp    = 0;
 112         crpc->crp_static   = !cached;
 113         CFS_INIT_LIST_HEAD(&crpc->crp_link);
 114
 115         cfs_atomic_inc(&console_session.ses_rpc_counter);
 116
 117         return 0;
 118 }
 119
 120 int
 121 lstcon_rpc_prep(lstcon_node_t *nd, int service,
 122                 int npg, lstcon_rpc_t **crpcpp)
 123 {
 124         lstcon_rpc_t  *crpc = NULL;
 125         int            rc;
 126
 127         cfs_spin_lock(&console_session.ses_rpc_lock);
 128
 129         if (!cfs_list_empty(&console_session.ses_rpc_freelist)) {
 130                 crpc = cfs_list_entry(console_session.ses_rpc_freelist.next,
 131                                       lstcon_rpc_t, crp_link);
 132                 cfs_list_del_init(&crpc->crp_link);
 133         }
 134
 135         cfs_spin_unlock(&console_session.ses_rpc_lock);
 136
 137         if (crpc == NULL) {
 138                 LIBCFS_ALLOC(crpc, sizeof(*crpc));
 139                 if (crpc == NULL)
 140                         return -ENOMEM;
 141         }
 142
 143         rc = lstcon_rpc_init(nd, service, npg, 1, crpc);
 144         if (rc == 0) {
 145                 *crpcpp = crpc;
 146                 return 0;
 147         }
 148
 149         LIBCFS_FREE(crpc, sizeof(*crpc));
 150
 151         return rc;
 152 }
 153
 154 void
 155 lstcon_rpc_put(lstcon_rpc_t *crpc)
 156 {
 157         srpc_bulk_t *bulk = &crpc->crp_rpc->crpc_bulk;
 158         int          i;
 159
 160         LASSERT (cfs_list_empty(&crpc->crp_link));
 161
 162         for (i = 0; i < bulk->bk_niov; i++) {
 163                 if (bulk->bk_iovs[i].kiov_page == NULL)
 164                         continue;
 165
 166                 cfs_free_page(bulk->bk_iovs[i].kiov_page);
 167         }
 168
 169         srpc_client_rpc_decref(crpc->crp_rpc);
 170
 171         if (crpc->crp_static) {
 172                 /* Static RPC, not allocated */
 173                 memset(crpc, 0, sizeof(*crpc));
 174                 crpc->crp_static = 1;
 175
 176         } else {
 177                 cfs_spin_lock(&console_session.ses_rpc_lock);
 178
 179                 cfs_list_add(&crpc->crp_link,
 180                              &console_session.ses_rpc_freelist);
 181
 182                 cfs_spin_unlock(&console_session.ses_rpc_lock);
 183         }
 184
 185         /* RPC is not alive now */
 186         cfs_atomic_dec(&console_session.ses_rpc_counter);
 187 }
 188
 189 void
 190 lstcon_rpc_post(lstcon_rpc_t *crpc)
 191 {
 192         lstcon_rpc_trans_t *trans = crpc->crp_trans;
 193
 194         LASSERT (trans != NULL);
 195
 196         cfs_atomic_inc(&trans->tas_remaining);
 197         crpc->crp_posted = 1;
 198
 199         sfw_post_rpc(crpc->crp_rpc);
 200 }
 201
 202 static char *
 203 lstcon_rpc_trans_name(int transop)
 204 {
 205         if (transop == LST_TRANS_SESNEW)
 206                 return "SESNEW";
 207
 208         if (transop == LST_TRANS_SESEND)
 209                 return "SESEND";
 210
 211         if (transop == LST_TRANS_SESQRY)
 212                 return "SESQRY";
 213
 214         if (transop == LST_TRANS_SESPING)
 215                 return "SESPING";
 216
 217         if (transop == LST_TRANS_TSBCLIADD)
 218                 return "TSBCLIADD";
 219
 220         if (transop == LST_TRANS_TSBSRVADD)
 221                 return "TSBSRVADD";
 222
 223         if (transop == LST_TRANS_TSBRUN)
 224                 return "TSBRUN";
 225
 226         if (transop == LST_TRANS_TSBSTOP)
 227                 return "TSBSTOP";
 228
 229         if (transop == LST_TRANS_TSBCLIQRY)
 230                 return "TSBCLIQRY";
 231
 232         if (transop == LST_TRANS_TSBSRVQRY)
 233                 return "TSBSRVQRY";
 234
 235         if (transop == LST_TRANS_STATQRY)
 236                 return "STATQRY";
 237
 238         return "Unknown";
 239 }
 240
 241 int
 242 lstcon_rpc_trans_prep(cfs_list_t *translist,
 243                       int transop, lstcon_rpc_trans_t **transpp)
 244 {
 245         lstcon_rpc_trans_t *trans;
 246
 247         if (translist != NULL) {
 248                 cfs_list_for_each_entry_typed(trans, translist,
 249                                               lstcon_rpc_trans_t, tas_link) {
 250                         /* Can't enqueue two private transaction on
 251                          * the same object */
 252                         if ((trans->tas_opc & transop) == LST_TRANS_PRIVATE)
 253                                 return -EPERM;
 254                 }
 255         }
 256
 257         /* create a trans group */
 258         LIBCFS_ALLOC(trans, sizeof(*trans));
 259         if (trans == NULL)
 260                 return -ENOMEM;
 261
 262         trans->tas_opc = transop;
 263
 264         if (translist == NULL)
 265                 CFS_INIT_LIST_HEAD(&trans->tas_olink);
 266         else
 267                 cfs_list_add_tail(&trans->tas_olink, translist);
 268
 269         cfs_list_add_tail(&trans->tas_link, &console_session.ses_trans_list);
 270
 271         CFS_INIT_LIST_HEAD(&trans->tas_rpcs_list);
 272         cfs_atomic_set(&trans->tas_remaining, 0);
 273         cfs_waitq_init(&trans->tas_waitq);
 274
 275         *transpp = trans;
 276
 277         return 0;
 278 }
 279
 280 void
 281 lstcon_rpc_trans_addreq(lstcon_rpc_trans_t *trans, lstcon_rpc_t *crpc)
 282 {
 283         cfs_list_add_tail(&crpc->crp_link, &trans->tas_rpcs_list);
 284         crpc->crp_trans = trans;
 285 }
 286
 287 void
 288 lstcon_rpc_trans_abort(lstcon_rpc_trans_t *trans, int error)
 289 {
 290         srpc_client_rpc_t *rpc;
 291         lstcon_rpc_t      *crpc;
 292         lstcon_node_t     *nd;
 293
 294         cfs_list_for_each_entry_typed (crpc, &trans->tas_rpcs_list,
 295                                        lstcon_rpc_t, crp_link) {
 296                 rpc = crpc->crp_rpc;
 297
 298                 cfs_spin_lock(&rpc->crpc_lock);
 299
 300                 if (!crpc->crp_posted || /* not posted */
 301                     crpc->crp_stamp != 0) { /* rpc done or aborted already */
 302                         if (crpc->crp_stamp == 0) {
 303                                 crpc->crp_stamp = cfs_time_current();
 304                                 crpc->crp_status = -EINTR;
 305                         }
 306                         cfs_spin_unlock(&rpc->crpc_lock);
 307                         continue;
 308                 }
 309
 310                 crpc->crp_stamp  = cfs_time_current();
 311                 crpc->crp_status = error;
 312
 313                 cfs_spin_unlock(&rpc->crpc_lock);
 314
 315                 sfw_abort_rpc(rpc);
 316
 317                 if  (error != ETIMEDOUT)
 318                         continue;
 319
 320                 nd = crpc->crp_node;
 321                 if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 322                         continue;
 323
 324                 nd->nd_stamp = crpc->crp_stamp;
 325                 nd->nd_state = LST_NODE_DOWN;
 326         }
 327 }
 328
 329 static int
 330 lstcon_rpc_trans_check(lstcon_rpc_trans_t *trans)
 331 {
 332         if (console_session.ses_shutdown &&
 333             !cfs_list_empty(&trans->tas_olink)) /* Not an end session RPC */
 334                 return 1;
 335
 336         return (cfs_atomic_read(&trans->tas_remaining) == 0) ? 1: 0;
 337 }
 338
 339 int
 340 lstcon_rpc_trans_postwait(lstcon_rpc_trans_t *trans, int timeout)
 341 {
 342         lstcon_rpc_t  *crpc;
 343         int            rc;
 344
 345         if (cfs_list_empty(&trans->tas_rpcs_list))
 346                 return 0;
 347
 348         if (timeout < LST_TRANS_MIN_TIMEOUT)
 349                 timeout = LST_TRANS_MIN_TIMEOUT;
 350
 351         CDEBUG(D_NET, "Transaction %s started\n",
 352                lstcon_rpc_trans_name(trans->tas_opc));
 353
 354         /* post all requests */
 355         cfs_list_for_each_entry_typed (crpc, &trans->tas_rpcs_list,
 356                                        lstcon_rpc_t, crp_link) {
 357                 LASSERT (!crpc->crp_posted);
 358
 359                 lstcon_rpc_post(crpc);
 360         }
 361
 362         cfs_mutex_unlock(&console_session.ses_mutex);
 363
 364         cfs_waitq_wait_event_interruptible_timeout(trans->tas_waitq,
 365                                               lstcon_rpc_trans_check(trans),
 366                                               cfs_time_seconds(timeout), rc);
 367
 368         rc = (rc > 0)? 0: ((rc < 0)? -EINTR: -ETIMEDOUT);
 369
 370         cfs_mutex_lock(&console_session.ses_mutex);
 371
 372         if (console_session.ses_shutdown)
 373                 rc = -ESHUTDOWN;
 374
 375         if (rc != 0 || atomic_read(&trans->tas_remaining) != 0) {
 376                 /* treat short timeout as canceled */
 377                 if (rc == -ETIMEDOUT && timeout < LST_TRANS_MIN_TIMEOUT * 2)
 378                         rc = -EINTR;
 379
 380                 lstcon_rpc_trans_abort(trans, rc);
 381         }
 382
 383         CDEBUG(D_NET, "Transaction %s stopped: %d\n",
 384                lstcon_rpc_trans_name(trans->tas_opc), rc);
 385
 386         lstcon_rpc_trans_stat(trans, lstcon_trans_stat());
 387
 388         return rc;
 389 }
 390
 391 int
 392 lstcon_rpc_get_reply(lstcon_rpc_t *crpc, srpc_msg_t **msgpp)
 393 {
 394         lstcon_node_t        *nd  = crpc->crp_node;
 395         srpc_client_rpc_t    *rpc = crpc->crp_rpc;
 396         srpc_generic_reply_t *rep;
 397
 398         LASSERT (nd != NULL && rpc != NULL);
 399         LASSERT (crpc->crp_stamp != 0);
 400
 401         if (crpc->crp_status != 0) {
 402                 *msgpp = NULL;
 403                 return crpc->crp_status;
 404         }
 405
 406         *msgpp = &rpc->crpc_replymsg;
 407         if (!crpc->crp_unpacked) {
 408                 sfw_unpack_message(*msgpp);
 409                 crpc->crp_unpacked = 1;
 410         }
 411
 412         if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 413                 return 0;
 414
 415         nd->nd_stamp = crpc->crp_stamp;
 416         rep = &(*msgpp)->msg_body.reply;
 417
 418         if (rep->sid.ses_nid == LNET_NID_ANY)
 419                 nd->nd_state = LST_NODE_UNKNOWN;
 420         else if (lstcon_session_match(rep->sid))
 421                 nd->nd_state = LST_NODE_ACTIVE;
 422         else
 423                 nd->nd_state = LST_NODE_BUSY;
 424
 425         return 0;
 426 }
 427
 428 void
 429 lstcon_rpc_trans_stat(lstcon_rpc_trans_t *trans, lstcon_trans_stat_t *stat)
 430 {
 431         lstcon_rpc_t      *crpc;
 432         srpc_msg_t        *rep;
 433         int                error;
 434
 435         LASSERT (stat != NULL);
 436
 437         memset(stat, 0, sizeof(*stat));
 438
 439         cfs_list_for_each_entry_typed(crpc, &trans->tas_rpcs_list,
 440                                       lstcon_rpc_t, crp_link) {
 441                 lstcon_rpc_stat_total(stat, 1);
 442
 443                 LASSERT (crpc->crp_stamp != 0);
 444
 445                 error = lstcon_rpc_get_reply(crpc, &rep);
 446                 if (error != 0) {
 447                         lstcon_rpc_stat_failure(stat, 1);
 448                         if (stat->trs_rpc_errno == 0)
 449                                 stat->trs_rpc_errno = -error;
 450
 451                         continue;
 452                 }
 453
 454                 lstcon_rpc_stat_success(stat, 1);
 455
 456                 lstcon_rpc_stat_reply(trans->tas_opc, rep,
 457                                       crpc->crp_node, stat);
 458         }
 459
 460         CDEBUG(D_NET, "transaction %s : success %d, failure %d, total %d, "
 461                       "RPC error(%d), Framework error(%d)\n",
 462                lstcon_rpc_trans_name(trans->tas_opc),
 463                lstcon_rpc_stat_success(stat, 0),
 464                lstcon_rpc_stat_failure(stat, 0),
 465                lstcon_rpc_stat_total(stat, 0),
 466                stat->trs_rpc_errno, stat->trs_fwk_errno);
 467
 468         return;
 469 }
 470
 471 int
 472 lstcon_rpc_trans_interpreter(lstcon_rpc_trans_t *trans,
 473                              cfs_list_t *head_up,
 474                              lstcon_rpc_readent_func_t readent)
 475 {
 476         cfs_list_t            tmp;
 477         cfs_list_t           *next;
 478         lstcon_rpc_ent_t     *ent;
 479         srpc_generic_reply_t *rep;
 480         lstcon_rpc_t         *crpc;
 481         srpc_msg_t           *msg;
 482         lstcon_node_t        *nd;
 483         cfs_duration_t        dur;
 484         struct timeval        tv;
 485         int                   error;
 486
 487         LASSERT (head_up != NULL);
 488
 489         next = head_up;
 490
 491         cfs_list_for_each_entry_typed(crpc, &trans->tas_rpcs_list,
 492                                       lstcon_rpc_t, crp_link) {
 493                 if (cfs_copy_from_user(&tmp, next,
 494                                        sizeof(cfs_list_t)))
 495                         return -EFAULT;
 496
 497                 if (tmp.next == head_up)
 498                         return 0;
 499
 500                 next = tmp.next;
 501
 502                 ent = cfs_list_entry(next, lstcon_rpc_ent_t, rpe_link);
 503
 504                 LASSERT (crpc->crp_stamp != 0);
 505
 506                 error = lstcon_rpc_get_reply(crpc, &msg);
 507
 508                 nd = crpc->crp_node;
 509
 510                 dur = (cfs_duration_t)cfs_time_sub(crpc->crp_stamp,
 511                       (cfs_time_t)console_session.ses_id.ses_stamp);
 512                 cfs_duration_usec(dur, &tv);
 513
 514                 if (cfs_copy_to_user(&ent->rpe_peer,
 515                                      &nd->nd_id, sizeof(lnet_process_id_t)) ||
 516                     cfs_copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
 517                     cfs_copy_to_user(&ent->rpe_state,
 518                                      &nd->nd_state, sizeof(nd->nd_state)) ||
 519                     cfs_copy_to_user(&ent->rpe_rpc_errno, &error,
 520                                      sizeof(error)))
 521                         return -EFAULT;
 522
 523                 if (error != 0)
 524                         continue;
 525
 526                 /* RPC is done */
 527                 rep = (srpc_generic_reply_t *)&msg->msg_body.reply;
 528
 529                 if (cfs_copy_to_user(&ent->rpe_sid,
 530                                      &rep->sid, sizeof(lst_sid_t)) ||
 531                     cfs_copy_to_user(&ent->rpe_fwk_errno,
 532                                      &rep->status, sizeof(rep->status)))
 533                         return -EFAULT;
 534
 535                 if (readent == NULL)
 536                         continue;
 537
 538                 if ((error = readent(trans->tas_opc, msg, ent)) != 0)
 539                         return error;
 540         }
 541
 542         return 0;
 543 }
 544
 545 void
 546 lstcon_rpc_trans_destroy(lstcon_rpc_trans_t *trans)
 547 {
 548         srpc_client_rpc_t *rpc;
 549         lstcon_rpc_t      *crpc;
 550         lstcon_rpc_t      *tmp;
 551         int                count = 0;
 552
 553         cfs_list_for_each_entry_safe_typed(crpc, tmp,
 554                                            &trans->tas_rpcs_list,
 555                                            lstcon_rpc_t, crp_link) {
 556                 rpc = crpc->crp_rpc;
 557
 558                 cfs_spin_lock(&rpc->crpc_lock);
 559
 560                 /* free it if not posted or finished already */
 561                 if (!crpc->crp_posted || crpc->crp_finished) {
 562                         cfs_spin_unlock(&rpc->crpc_lock);
 563
 564                         cfs_list_del_init(&crpc->crp_link);
 565                         lstcon_rpc_put(crpc);
 566
 567                         continue;
 568                 }
 569
 570                 /* rpcs can be still not callbacked (even LNetMDUnlink is called)
 571                  * because huge timeout for inaccessible network, don't make
 572                  * user wait for them, just abandon them, they will be recycled
 573                  * in callback */
 574
 575                 LASSERT (crpc->crp_status != 0);
 576
 577                 crpc->crp_node  = NULL;
 578                 crpc->crp_trans = NULL;
 579                 cfs_list_del_init(&crpc->crp_link);
 580                 count ++;
 581
 582                 cfs_spin_unlock(&rpc->crpc_lock);
 583
 584                 cfs_atomic_dec(&trans->tas_remaining);
 585         }
 586
 587         LASSERT (cfs_atomic_read(&trans->tas_remaining) == 0);
 588
 589         cfs_list_del(&trans->tas_link);
 590         if (!cfs_list_empty(&trans->tas_olink))
 591                 cfs_list_del(&trans->tas_olink);
 592
 593         CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
 594                lstcon_rpc_trans_name(trans->tas_opc), count);
 595
 596         LIBCFS_FREE(trans, sizeof(*trans));
 597
 598         return;
 599 }
 600
 601 int
 602 lstcon_sesrpc_prep(lstcon_node_t *nd, int transop, lstcon_rpc_t **crpc)
 603 {
 604         srpc_mksn_reqst_t *msrq;
 605         srpc_rmsn_reqst_t *rsrq;
 606         int                rc;
 607
 608         switch (transop) {
 609         case LST_TRANS_SESNEW:
 610                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_MAKE_SESSION, 0, crpc);
 611                 if (rc != 0)
 612                         return rc;
 613
 614                 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 615                 msrq->mksn_sid     = console_session.ses_id;
 616                 msrq->mksn_force   = console_session.ses_force;
 617                 strncpy(msrq->mksn_name, console_session.ses_name,
 618                         strlen(console_session.ses_name));
 619                 break;
 620
 621         case LST_TRANS_SESEND:
 622                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION, 0, crpc);
 623                 if (rc != 0)
 624                         return rc;
 625
 626                 rsrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.rmsn_reqst;
 627                 rsrq->rmsn_sid = console_session.ses_id;
 628                 break;
 629
 630         default:
 631                 LBUG();
 632         }
 633
 634         return 0;
 635 }
 636
 637 int
 638 lstcon_dbgrpc_prep(lstcon_node_t *nd, lstcon_rpc_t **crpc)
 639 {
 640         srpc_debug_reqst_t *drq;
 641         int                 rc;
 642
 643         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_DEBUG, 0, crpc);
 644         if (rc != 0)
 645                 return rc;
 646
 647         drq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
 648
 649         drq->dbg_sid   = console_session.ses_id;
 650         drq->dbg_flags = 0;
 651
 652         return rc;
 653 }
 654
 655 int
 656 lstcon_batrpc_prep(lstcon_node_t *nd, int transop,
 657                    lstcon_tsb_hdr_t *tsb, lstcon_rpc_t **crpc)
 658 {
 659         lstcon_batch_t     *batch;
 660         srpc_batch_reqst_t *brq;
 661         int                 rc;
 662
 663         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_BATCH, 0, crpc);
 664         if (rc != 0)
 665                 return rc;
 666
 667         brq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.bat_reqst;
 668
 669         brq->bar_sid     = console_session.ses_id;
 670         brq->bar_bid     = tsb->tsb_id;
 671         brq->bar_testidx = tsb->tsb_index;
 672         brq->bar_opc     = transop == LST_TRANS_TSBRUN ? SRPC_BATCH_OPC_RUN :
 673                            (transop == LST_TRANS_TSBSTOP ? SRPC_BATCH_OPC_STOP:
 674                             SRPC_BATCH_OPC_QUERY);
 675
 676         if (transop != LST_TRANS_TSBRUN &&
 677             transop != LST_TRANS_TSBSTOP)
 678                 return 0;
 679
 680         LASSERT (tsb->tsb_index == 0);
 681
 682         batch = (lstcon_batch_t *)tsb;
 683         brq->bar_arg = batch->bat_arg;
 684
 685         return 0;
 686 }
 687
 688 int
 689 lstcon_statrpc_prep(lstcon_node_t *nd, lstcon_rpc_t **crpc)
 690 {
 691         srpc_stat_reqst_t *srq;
 692         int                rc;
 693
 694         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_QUERY_STAT, 0, crpc);
 695         if (rc != 0)
 696                 return rc;
 697
 698         srq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.stat_reqst;
 699
 700         srq->str_sid  = console_session.ses_id;
 701         srq->str_type = 0; /* XXX remove it */
 702
 703         return 0;
 704 }
 705
 706 lnet_process_id_packed_t *
 707 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
 708 {
 709         lnet_process_id_packed_t *pid;
 710         int                       i;
 711
 712         i = idx / SFW_ID_PER_PAGE;
 713
 714         LASSERT (i < nkiov);
 715
 716         pid = (lnet_process_id_packed_t *)cfs_page_address(kiov[i].kiov_page);
 717
 718         return &pid[idx % SFW_ID_PER_PAGE];
 719 }
 720
 721 int
 722 lstcon_dstnodes_prep(lstcon_group_t *grp, int idx,
 723                      int dist, int span, int nkiov, lnet_kiov_t *kiov)
 724 {
 725         lnet_process_id_packed_t *pid;
 726         lstcon_ndlink_t          *ndl;
 727         lstcon_node_t            *nd;
 728         int                       start;
 729         int                       end;
 730         int                       i = 0;
 731
 732         LASSERT (dist >= 1);
 733         LASSERT (span >= 1);
 734         LASSERT (grp->grp_nnode >= 1);
 735
 736         if (span > grp->grp_nnode)
 737                 return -EINVAL;
 738
 739         start = ((idx / dist) * span) % grp->grp_nnode;
 740         end   = ((idx / dist) * span + span - 1) % grp->grp_nnode;
 741
 742         cfs_list_for_each_entry_typed(ndl, &grp->grp_ndl_list,
 743                                       lstcon_ndlink_t, ndl_link) {
 744                 nd = ndl->ndl_node;
 745                 if (i < start) {
 746                         i ++;
 747                         continue;
 748                 }
 749
 750                 if (i > (end >= start ? end: grp->grp_nnode))
 751                         break;
 752
 753                 pid = lstcon_next_id((i - start), nkiov, kiov);
 754                 pid->nid = nd->nd_id.nid;
 755                 pid->pid = nd->nd_id.pid;
 756                 i++;
 757         }
 758
 759         if (start <= end) /* done */
 760                 return 0;
 761
 762         cfs_list_for_each_entry_typed(ndl, &grp->grp_ndl_list,
 763                                       lstcon_ndlink_t, ndl_link) {
 764                 if (i > grp->grp_nnode + end)
 765                         break;
 766
 767                 nd = ndl->ndl_node;
 768                 pid = lstcon_next_id((i - start), nkiov, kiov);
 769                 pid->nid = nd->nd_id.nid;
 770                 pid->pid = nd->nd_id.pid;
 771                 i++;
 772         }
 773
 774         return 0;
 775 }
 776
 777 int
 778 lstcon_pingrpc_prep(lst_test_ping_param_t *param, srpc_test_reqst_t *req)
 779 {
 780         test_ping_req_t *prq = &req->tsr_u.ping;
 781
 782         prq->png_size   = param->png_size;
 783         prq->png_flags  = param->png_flags;
 784         /* TODO dest */
 785         return 0;
 786 }
 787
 788 int
 789 lstcon_bulkrpc_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
 790 {
 791         test_bulk_req_t *brq = &req->tsr_u.bulk;
 792
 793         brq->blk_opc    = param->blk_opc;
 794         brq->blk_npg    = (param->blk_size + CFS_PAGE_SIZE - 1) / CFS_PAGE_SIZE;
 795         brq->blk_flags  = param->blk_flags;
 796
 797         return 0;
 798 }
 799
 800 int
 801 lstcon_testrpc_prep(lstcon_node_t *nd, int transop,
 802                     lstcon_test_t *test, lstcon_rpc_t **crpc)
 803 {
 804         lstcon_group_t    *sgrp = test->tes_src_grp;
 805         lstcon_group_t    *dgrp = test->tes_dst_grp;
 806         srpc_test_reqst_t *trq;
 807         srpc_bulk_t       *bulk;
 808         int                i;
 809         int                n  = 0;
 810         int                rc = 0;
 811
 812         if (transop == LST_TRANS_TSBCLIADD)
 813                 n = sfw_id_pages(test->tes_span);
 814
 815         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_TEST, n, crpc);
 816         if (rc != 0)
 817                 return rc;
 818
 819         trq  = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.tes_reqst;
 820
 821         if (transop == LST_TRANS_TSBSRVADD) {
 822                 int ndist = (sgrp->grp_nnode + test->tes_dist - 1) / test->tes_dist;
 823                 int nspan = (dgrp->grp_nnode + test->tes_span - 1) / test->tes_span;
 824                 int nmax = (ndist + nspan - 1) / nspan;
 825
 826                 trq->tsr_ndest = 0;
 827                 trq->tsr_loop  = nmax * test->tes_dist * test->tes_concur;
 828
 829         } else {
 830                 bulk = &(*crpc)->crp_rpc->crpc_bulk;
 831
 832                 for (i = 0; i < n; i++) {
 833                         bulk->bk_iovs[i].kiov_offset = 0;
 834                         bulk->bk_iovs[i].kiov_len    = CFS_PAGE_SIZE;
 835                         bulk->bk_iovs[i].kiov_page   = cfs_alloc_page(CFS_ALLOC_STD);
 836
 837                         if (bulk->bk_iovs[i].kiov_page != NULL)
 838                                 continue;
 839
 840                         lstcon_rpc_put(*crpc);
 841                         return -ENOMEM;
 842                 }
 843
 844                 bulk->bk_sink = 0;
 845
 846                 LASSERT (transop == LST_TRANS_TSBCLIADD);
 847
 848                 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
 849                                           test->tes_cliidx++, test->tes_dist,
 850                                           test->tes_span, n, &bulk->bk_iovs[0]);
 851                 if (rc != 0) {
 852                         lstcon_rpc_put(*crpc);
 853                         return rc;
 854                 }
 855
 856                 trq->tsr_ndest = test->tes_span;
 857                 trq->tsr_loop  = test->tes_loop;
 858         }
 859
 860         trq->tsr_sid        = console_session.ses_id;
 861         trq->tsr_bid        = test->tes_hdr.tsb_id;
 862         trq->tsr_concur     = test->tes_concur;
 863         trq->tsr_is_client  = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
 864         trq->tsr_stop_onerr = !!test->tes_stop_onerr;
 865
 866         switch (test->tes_type) {
 867         case LST_TEST_PING:
 868                 trq->tsr_service = SRPC_SERVICE_PING;
 869                 rc = lstcon_pingrpc_prep((lst_test_ping_param_t *)&test->tes_param[0], trq);
 870                 break;
 871         case LST_TEST_BULK:
 872                 trq->tsr_service = SRPC_SERVICE_BRW;
 873                 rc = lstcon_bulkrpc_prep((lst_test_bulk_param_t *)&test->tes_param[0], trq);
 874                 break;
 875         default:
 876                 LBUG();
 877                 break;
 878         }
 879
 880         return rc;
 881 }
 882
 883 void
 884 lstcon_rpc_stat_reply(int transop, srpc_msg_t *msg,
 885                       lstcon_node_t *nd, lstcon_trans_stat_t *stat)
 886 {
 887         srpc_mksn_reply_t  *mksn_rep;
 888         srpc_rmsn_reply_t  *rmsn_rep;
 889         srpc_debug_reply_t *dbg_rep;
 890         srpc_batch_reply_t *bat_rep;
 891         srpc_test_reply_t  *test_rep;
 892         srpc_stat_reply_t  *stat_rep;
 893         int                 rc = 0;
 894
 895         switch (transop) {
 896         case LST_TRANS_SESNEW:
 897                 mksn_rep = &msg->msg_body.mksn_reply;
 898
 899                 if (mksn_rep->mksn_status == 0) {
 900                         lstcon_sesop_stat_success(stat, 1);
 901                         /* session timeout on remote node */
 902                         nd->nd_timeout = mksn_rep->mksn_timeout;
 903                         return;
 904                 }
 905
 906                 LASSERT (mksn_rep->mksn_status == EBUSY ||
 907                          mksn_rep->mksn_status == EINVAL);
 908
 909                 lstcon_sesop_stat_failure(stat, 1);
 910                 rc = mksn_rep->mksn_status;
 911                 break;
 912
 913         case LST_TRANS_SESEND:
 914                 rmsn_rep = &msg->msg_body.rmsn_reply;
 915                 /* ESRCH is not an error for end session */
 916                 if (rmsn_rep->rmsn_status == 0 ||
 917                     rmsn_rep->rmsn_status == ESRCH) {
 918                         lstcon_sesop_stat_success(stat, 1);
 919                         return;
 920                 }
 921
 922                 LASSERT (rmsn_rep->rmsn_status == EBUSY ||
 923                          rmsn_rep->rmsn_status == EINVAL);
 924
 925                 lstcon_sesop_stat_failure(stat, 1);
 926                 rc = rmsn_rep->rmsn_status;
 927                 break;
 928
 929         case LST_TRANS_SESQRY:
 930         case LST_TRANS_SESPING:
 931                 dbg_rep = &msg->msg_body.dbg_reply;
 932
 933                 if (dbg_rep->dbg_status == ESRCH) {
 934                         lstcon_sesqry_stat_unknown(stat, 1);
 935                         return;
 936                 }
 937
 938                 LASSERT (dbg_rep->dbg_status == 0);
 939
 940                 if (lstcon_session_match(dbg_rep->dbg_sid))
 941                         lstcon_sesqry_stat_active(stat, 1);
 942                 else
 943                         lstcon_sesqry_stat_busy(stat, 1);
 944                 return;
 945
 946         case LST_TRANS_TSBRUN:
 947         case LST_TRANS_TSBSTOP:
 948                 bat_rep = &msg->msg_body.bat_reply;
 949
 950                 if (bat_rep->bar_status == 0) {
 951                         lstcon_tsbop_stat_success(stat, 1);
 952                         return;
 953                 }
 954
 955                 if (bat_rep->bar_status == EPERM &&
 956                     transop == LST_TRANS_TSBSTOP) {
 957                         lstcon_tsbop_stat_success(stat, 1);
 958                         return;
 959                 }
 960
 961                 lstcon_tsbop_stat_failure(stat, 1);
 962                 rc = bat_rep->bar_status;
 963                 break;
 964
 965         case LST_TRANS_TSBCLIQRY:
 966         case LST_TRANS_TSBSRVQRY:
 967                 bat_rep = &msg->msg_body.bat_reply;
 968
 969                 if (bat_rep->bar_active != 0)
 970                         lstcon_tsbqry_stat_run(stat, 1);
 971                 else
 972                         lstcon_tsbqry_stat_idle(stat, 1);
 973
 974                 if (bat_rep->bar_status == 0)
 975                         return;
 976
 977                 lstcon_tsbqry_stat_failure(stat, 1);
 978                 rc = bat_rep->bar_status;
 979                 break;
 980
 981         case LST_TRANS_TSBCLIADD:
 982         case LST_TRANS_TSBSRVADD:
 983                 test_rep = &msg->msg_body.tes_reply;
 984
 985                 if (test_rep->tsr_status == 0) {
 986                         lstcon_tsbop_stat_success(stat, 1);
 987                         return;
 988                 }
 989
 990                 lstcon_tsbop_stat_failure(stat, 1);
 991                 rc = test_rep->tsr_status;
 992                 break;
 993
 994         case LST_TRANS_STATQRY:
 995                 stat_rep = &msg->msg_body.stat_reply;
 996
 997                 if (stat_rep->str_status == 0) {
 998                         lstcon_statqry_stat_success(stat, 1);
 999                         return;
1000                 }
1001
1002                 lstcon_statqry_stat_failure(stat, 1);
1003                 rc = stat_rep->str_status;
1004                 break;
1005
1006         default:
1007                 LBUG();
1008         }
1009
1010         if (stat->trs_fwk_errno == 0)
1011                 stat->trs_fwk_errno = rc;
1012
1013         return;
1014 }
1015
1016 int
1017 lstcon_rpc_trans_ndlist(cfs_list_t *ndlist,
1018                         cfs_list_t *translist, int transop,
1019                         void *arg, lstcon_rpc_cond_func_t condition,
1020                         lstcon_rpc_trans_t **transpp)
1021 {
1022         lstcon_rpc_trans_t *trans;
1023         lstcon_ndlink_t    *ndl;
1024         lstcon_node_t      *nd;
1025         lstcon_rpc_t       *rpc;
1026         int                 rc;
1027
1028         /* Creating session RPG for list of nodes */
1029
1030         rc = lstcon_rpc_trans_prep(translist, transop, &trans);
1031         if (rc != 0) {
1032                 CERROR("Can't create transaction %d: %d\n", transop, rc);
1033                 return rc;
1034         }
1035
1036         cfs_list_for_each_entry_typed(ndl, ndlist, lstcon_ndlink_t, ndl_link) {
1037                 rc = condition == NULL ? 1 :
1038                      condition(transop, ndl->ndl_node, arg);
1039
1040                 if (rc == 0)
1041                         continue;
1042
1043                 if (rc < 0) {
1044                         CDEBUG(D_NET, "Condition error while creating RPC "
1045                                       " for transaction %d: %d\n", transop, rc);
1046                         break;
1047                 }
1048
1049                 nd = ndl->ndl_node;
1050
1051                 switch (transop) {
1052                 case LST_TRANS_SESNEW:
1053                 case LST_TRANS_SESEND:
1054                         rc = lstcon_sesrpc_prep(nd, transop, &rpc);
1055                         break;
1056                 case LST_TRANS_SESQRY:
1057                 case LST_TRANS_SESPING:
1058                         rc = lstcon_dbgrpc_prep(nd, &rpc);
1059                         break;
1060                 case LST_TRANS_TSBCLIADD:
1061                 case LST_TRANS_TSBSRVADD:
1062                         rc = lstcon_testrpc_prep(nd, transop,
1063                                                  (lstcon_test_t *)arg, &rpc);
1064                         break;
1065                 case LST_TRANS_TSBRUN:
1066                 case LST_TRANS_TSBSTOP:
1067                 case LST_TRANS_TSBCLIQRY:
1068                 case LST_TRANS_TSBSRVQRY:
1069                         rc = lstcon_batrpc_prep(nd, transop,
1070                                                 (lstcon_tsb_hdr_t *)arg, &rpc);
1071                         break;
1072                 case LST_TRANS_STATQRY:
1073                         rc = lstcon_statrpc_prep(nd, &rpc);
1074                         break;
1075                 default:
1076                         rc = -EINVAL;
1077                         break;
1078                 }
1079
1080                 if (rc != 0) {
1081                         CERROR("Failed to create RPC for transaction %s: %d\n",
1082                                lstcon_rpc_trans_name(transop), rc);
1083                         break;
1084                 }
1085
1086                 lstcon_rpc_trans_addreq(trans, rpc);
1087         }
1088
1089         if (rc == 0) {
1090                 *transpp = trans;
1091                 return 0;
1092         }
1093
1094         lstcon_rpc_trans_destroy(trans);
1095
1096         return rc;
1097 }
1098
1099 void
1100 lstcon_rpc_pinger(void *arg)
1101 {
1102         stt_timer_t        *ptimer = (stt_timer_t *)arg;
1103         lstcon_rpc_trans_t *trans;
1104         lstcon_rpc_t       *crpc;
1105         srpc_msg_t         *rep;
1106         srpc_debug_reqst_t *drq;
1107         lstcon_ndlink_t    *ndl;
1108         lstcon_node_t      *nd;
1109         time_t              intv;
1110         int                 count = 0;
1111         int                 rc;
1112
1113         /* RPC pinger is a special case of transaction,
1114          * it's called by timer at 8 seconds interval.
1115          */
1116         cfs_mutex_lock(&console_session.ses_mutex);
1117
1118         if (console_session.ses_shutdown || console_session.ses_expired) {
1119                 cfs_mutex_unlock(&console_session.ses_mutex);
1120                 return;
1121         }
1122
1123         if (!console_session.ses_expired &&
1124             cfs_time_current_sec() - console_session.ses_laststamp >
1125             (time_t)console_session.ses_timeout)
1126                 console_session.ses_expired = 1;
1127
1128         trans = console_session.ses_ping;
1129
1130         LASSERT (trans != NULL);
1131
1132         cfs_list_for_each_entry_typed(ndl, &console_session.ses_ndl_list,
1133                                       lstcon_ndlink_t, ndl_link) {
1134                 nd = ndl->ndl_node;
1135
1136                 if (console_session.ses_expired) {
1137                         /* idle console, end session on all nodes */
1138                         if (nd->nd_state != LST_NODE_ACTIVE)
1139                                 continue;
1140
1141                         rc = lstcon_sesrpc_prep(nd, LST_TRANS_SESEND, &crpc);
1142                         if (rc != 0) {
1143                                 CERROR("Out of memory\n");
1144                                 break;
1145                         }
1146
1147                         lstcon_rpc_trans_addreq(trans, crpc);
1148                         lstcon_rpc_post(crpc);
1149
1150                         continue;
1151                 }
1152
1153                 crpc = &nd->nd_ping;
1154
1155                 if (crpc->crp_rpc != NULL) {
1156                         LASSERT (crpc->crp_trans == trans);
1157                         LASSERT (!cfs_list_empty(&crpc->crp_link));
1158
1159                         cfs_spin_lock(&crpc->crp_rpc->crpc_lock);
1160
1161                         LASSERT (crpc->crp_posted);
1162
1163                         if (!crpc->crp_finished) {
1164                                 /* in flight */
1165                                 cfs_spin_unlock(&crpc->crp_rpc->crpc_lock);
1166                                 continue;
1167                         }
1168
1169                         cfs_spin_unlock(&crpc->crp_rpc->crpc_lock);
1170
1171                         lstcon_rpc_get_reply(crpc, &rep);
1172
1173                         cfs_list_del_init(&crpc->crp_link);
1174
1175                         lstcon_rpc_put(crpc);
1176                 }
1177
1178                 if (nd->nd_state != LST_NODE_ACTIVE)
1179                         continue;
1180
1181                 intv = cfs_duration_sec(cfs_time_sub(cfs_time_current(),
1182                                                      nd->nd_stamp));
1183                 if (intv < (time_t)nd->nd_timeout / 2)
1184                         continue;
1185
1186                 rc = lstcon_rpc_init(nd, SRPC_SERVICE_DEBUG, 0, 0, crpc);
1187                 if (rc != 0) {
1188                         CERROR("Out of memory\n");
1189                         break;
1190                 }
1191
1192                 drq = &crpc->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
1193
1194                 drq->dbg_sid   = console_session.ses_id;
1195                 drq->dbg_flags = 0;
1196
1197                 lstcon_rpc_trans_addreq(trans, crpc);
1198                 lstcon_rpc_post(crpc);
1199
1200                 count ++;
1201         }
1202
1203         if (console_session.ses_expired) {
1204                 cfs_mutex_unlock(&console_session.ses_mutex);
1205                 return;
1206         }
1207
1208         CDEBUG(D_NET, "Ping %d nodes in session\n", count);
1209
1210         ptimer->stt_expires = (cfs_time_t)(cfs_time_current_sec() + LST_PING_INTERVAL);
1211         stt_add_timer(ptimer);
1212
1213         cfs_mutex_unlock(&console_session.ses_mutex);
1214 }
1215
1216 int
1217 lstcon_rpc_pinger_start(void)
1218 {
1219         stt_timer_t    *ptimer;
1220         int             rc;
1221
1222         LASSERT (cfs_list_empty(&console_session.ses_rpc_freelist));
1223         LASSERT (cfs_atomic_read(&console_session.ses_rpc_counter) == 0);
1224
1225         rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1226                                    &console_session.ses_ping);
1227         if (rc != 0) {
1228                 CERROR("Failed to create console pinger\n");
1229                 return rc;
1230         }
1231
1232         ptimer = &console_session.ses_ping_timer;
1233         ptimer->stt_expires = (cfs_time_t)(cfs_time_current_sec() + LST_PING_INTERVAL);
1234
1235         stt_add_timer(ptimer);
1236
1237         return 0;
1238 }
1239
1240 void
1241 lstcon_rpc_pinger_stop(void)
1242 {
1243         LASSERT (console_session.ses_shutdown);
1244
1245         stt_del_timer(&console_session.ses_ping_timer);
1246
1247         lstcon_rpc_trans_abort(console_session.ses_ping, -ESHUTDOWN);
1248         lstcon_rpc_trans_stat(console_session.ses_ping, lstcon_trans_stat());
1249         lstcon_rpc_trans_destroy(console_session.ses_ping);
1250
1251         memset(lstcon_trans_stat(), 0, sizeof(lstcon_trans_stat_t));
1252
1253         console_session.ses_ping = NULL;
1254 }
1255
1256 void
1257 lstcon_rpc_cleanup_wait(void)
1258 {
1259         lstcon_rpc_trans_t *trans;
1260         lstcon_rpc_t       *crpc;
1261         cfs_list_t         *pacer;
1262         cfs_list_t          zlist;
1263
1264         /* Called with hold of global mutex */
1265
1266         LASSERT (console_session.ses_shutdown);
1267
1268         while (!cfs_list_empty(&console_session.ses_trans_list)) {
1269                 cfs_list_for_each(pacer, &console_session.ses_trans_list) {
1270                         trans = cfs_list_entry(pacer, lstcon_rpc_trans_t,
1271                                                tas_link);
1272
1273                         CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1274                                lstcon_rpc_trans_name(trans->tas_opc));
1275
1276                         cfs_waitq_signal(&trans->tas_waitq);
1277                 }
1278
1279                 cfs_mutex_unlock(&console_session.ses_mutex);
1280
1281                 CWARN("Session is shutting down, "
1282                       "waiting for termination of transactions\n");
1283                 cfs_pause(cfs_time_seconds(1));
1284
1285                 cfs_mutex_lock(&console_session.ses_mutex);
1286         }
1287
1288         cfs_spin_lock(&console_session.ses_rpc_lock);
1289
1290         lst_wait_until((cfs_atomic_read(&console_session.ses_rpc_counter) == 0),
1291                        console_session.ses_rpc_lock,
1292                        "Network is not accessable or target is down, "
1293                        "waiting for %d console RPCs to being recycled\n",
1294                        cfs_atomic_read(&console_session.ses_rpc_counter));
1295
1296         cfs_list_add(&zlist, &console_session.ses_rpc_freelist);
1297         cfs_list_del_init(&console_session.ses_rpc_freelist);
1298
1299         cfs_spin_unlock(&console_session.ses_rpc_lock);
1300
1301         while (!cfs_list_empty(&zlist)) {
1302                 crpc = cfs_list_entry(zlist.next, lstcon_rpc_t, crp_link);
1303
1304                 cfs_list_del(&crpc->crp_link);
1305                 LIBCFS_FREE(crpc, sizeof(lstcon_rpc_t));
1306         }
1307 }
1308
1309 int
1310 lstcon_rpc_module_init(void)
1311 {
1312         CFS_INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1313         console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1314         console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1315
1316         console_session.ses_ping = NULL;
1317
1318         cfs_spin_lock_init(&console_session.ses_rpc_lock);
1319         cfs_atomic_set(&console_session.ses_rpc_counter, 0);
1320         CFS_INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1321
1322         return 0;
1323 }
1324
1325 void
1326 lstcon_rpc_module_fini(void)
1327 {
1328         LASSERT (cfs_list_empty(&console_session.ses_rpc_freelist));
1329         LASSERT (cfs_atomic_read(&console_session.ses_rpc_counter) == 0);
1330 }
1331
1332 #endif