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 /*
  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_up(&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_down(&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_client_rpc_t *rpc;
 431         srpc_msg_t        *rep;
 432         int                error;
 433
 434         LASSERT (stat != NULL);
 435
 436         memset(stat, 0, sizeof(*stat));
 437
 438         cfs_list_for_each_entry_typed(crpc, &trans->tas_rpcs_list,
 439                                       lstcon_rpc_t, crp_link) {
 440                 lstcon_rpc_stat_total(stat, 1);
 441
 442                 rpc = crpc->crp_rpc;
 443
 444                 LASSERT (crpc->crp_stamp != 0);
 445
 446                 error = lstcon_rpc_get_reply(crpc, &rep);
 447                 if (error != 0) {
 448                         lstcon_rpc_stat_failure(stat, 1);
 449                         if (stat->trs_rpc_errno == 0)
 450                                 stat->trs_rpc_errno = -error;
 451
 452                         continue;
 453                 }
 454
 455                 lstcon_rpc_stat_success(stat, 1);
 456
 457                 lstcon_rpc_stat_reply(trans->tas_opc, rep,
 458                                       crpc->crp_node, stat);
 459         }
 460
 461         CDEBUG(D_NET, "transaction %s : success %d, failure %d, total %d, "
 462                       "RPC error(%d), Framework error(%d)\n",
 463                lstcon_rpc_trans_name(trans->tas_opc),
 464                lstcon_rpc_stat_success(stat, 0),
 465                lstcon_rpc_stat_failure(stat, 0),
 466                lstcon_rpc_stat_total(stat, 0),
 467                stat->trs_rpc_errno, stat->trs_fwk_errno);
 468
 469         return;
 470 }
 471
 472 int
 473 lstcon_rpc_trans_interpreter(lstcon_rpc_trans_t *trans,
 474                              cfs_list_t *head_up,
 475                              lstcon_rpc_readent_func_t readent)
 476 {
 477         cfs_list_t            tmp;
 478         cfs_list_t           *next;
 479         lstcon_rpc_ent_t     *ent;
 480         srpc_generic_reply_t *rep;
 481         srpc_client_rpc_t    *rpc;
 482         lstcon_rpc_t         *crpc;
 483         srpc_msg_t           *msg;
 484         lstcon_node_t        *nd;
 485         cfs_duration_t        dur;
 486         struct timeval        tv;
 487         int                   error;
 488
 489         LASSERT (head_up != NULL);
 490
 491         next = head_up;
 492
 493         cfs_list_for_each_entry_typed(crpc, &trans->tas_rpcs_list,
 494                                       lstcon_rpc_t, crp_link) {
 495                 if (cfs_copy_from_user(&tmp, next,
 496                                        sizeof(cfs_list_t)))
 497                         return -EFAULT;
 498
 499                 if (tmp.next == head_up)
 500                         return 0;
 501
 502                 next = tmp.next;
 503
 504                 ent = cfs_list_entry(next, lstcon_rpc_ent_t, rpe_link);
 505
 506                 rpc = crpc->crp_rpc;
 507
 508                 LASSERT (crpc->crp_stamp != 0);
 509
 510                 error = lstcon_rpc_get_reply(crpc, &msg);
 511
 512                 nd = crpc->crp_node;
 513
 514                 dur = (cfs_duration_t)cfs_time_sub(crpc->crp_stamp,
 515                       (cfs_time_t)console_session.ses_id.ses_stamp);
 516                 cfs_duration_usec(dur, &tv);
 517
 518                 if (cfs_copy_to_user(&ent->rpe_peer,
 519                                      &nd->nd_id, sizeof(lnet_process_id_t)) ||
 520                     cfs_copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
 521                     cfs_copy_to_user(&ent->rpe_state,
 522                                      &nd->nd_state, sizeof(nd->nd_state)) ||
 523                     cfs_copy_to_user(&ent->rpe_rpc_errno, &error,
 524                                      sizeof(error)))
 525                         return -EFAULT;
 526
 527                 if (error != 0)
 528                         continue;
 529
 530                 /* RPC is done */
 531                 rep = (srpc_generic_reply_t *)&msg->msg_body.reply;
 532
 533                 if (cfs_copy_to_user(&ent->rpe_sid,
 534                                      &rep->sid, sizeof(lst_sid_t)) ||
 535                     cfs_copy_to_user(&ent->rpe_fwk_errno,
 536                                      &rep->status, sizeof(rep->status)))
 537                         return -EFAULT;
 538
 539                 if (readent == NULL)
 540                         continue;
 541
 542                 if ((error = readent(trans->tas_opc, msg, ent)) != 0)
 543                         return error;
 544         }
 545
 546         return 0;
 547 }
 548
 549 void
 550 lstcon_rpc_trans_destroy(lstcon_rpc_trans_t *trans)
 551 {
 552         srpc_client_rpc_t *rpc;
 553         lstcon_rpc_t      *crpc;
 554         lstcon_rpc_t      *tmp;
 555         int                count = 0;
 556
 557         cfs_list_for_each_entry_safe_typed(crpc, tmp,
 558                                            &trans->tas_rpcs_list,
 559                                            lstcon_rpc_t, crp_link) {
 560                 rpc = crpc->crp_rpc;
 561
 562                 cfs_spin_lock(&rpc->crpc_lock);
 563
 564                 /* free it if not posted or finished already */
 565                 if (!crpc->crp_posted || crpc->crp_finished) {
 566                         cfs_spin_unlock(&rpc->crpc_lock);
 567
 568                         cfs_list_del_init(&crpc->crp_link);
 569                         lstcon_rpc_put(crpc);
 570
 571                         continue;
 572                 }
 573
 574                 /* rpcs can be still not callbacked (even LNetMDUnlink is called)
 575                  * because huge timeout for inaccessible network, don't make
 576                  * user wait for them, just abandon them, they will be recycled
 577                  * in callback */
 578
 579                 LASSERT (crpc->crp_status != 0);
 580
 581                 crpc->crp_node  = NULL;
 582                 crpc->crp_trans = NULL;
 583                 cfs_list_del_init(&crpc->crp_link);
 584                 count ++;
 585
 586                 cfs_spin_unlock(&rpc->crpc_lock);
 587
 588                 cfs_atomic_dec(&trans->tas_remaining);
 589         }
 590
 591         LASSERT (cfs_atomic_read(&trans->tas_remaining) == 0);
 592
 593         cfs_list_del(&trans->tas_link);
 594         if (!cfs_list_empty(&trans->tas_olink))
 595                 cfs_list_del(&trans->tas_olink);
 596
 597         CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
 598                lstcon_rpc_trans_name(trans->tas_opc), count);
 599
 600         LIBCFS_FREE(trans, sizeof(*trans));
 601
 602         return;
 603 }
 604
 605 int
 606 lstcon_sesrpc_prep(lstcon_node_t *nd, int transop, lstcon_rpc_t **crpc)
 607 {
 608         srpc_mksn_reqst_t *msrq;
 609         srpc_rmsn_reqst_t *rsrq;
 610         int                rc;
 611
 612         switch (transop) {
 613         case LST_TRANS_SESNEW:
 614                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_MAKE_SESSION, 0, crpc);
 615                 if (rc != 0)
 616                         return rc;
 617
 618                 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 619                 msrq->mksn_sid     = console_session.ses_id;
 620                 msrq->mksn_force   = console_session.ses_force;
 621                 strncpy(msrq->mksn_name, console_session.ses_name,
 622                         strlen(console_session.ses_name));
 623                 break;
 624
 625         case LST_TRANS_SESEND:
 626                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION, 0, crpc);
 627                 if (rc != 0)
 628                         return rc;
 629
 630                 rsrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.rmsn_reqst;
 631                 rsrq->rmsn_sid = console_session.ses_id;
 632                 break;
 633
 634         default:
 635                 LBUG();
 636         }
 637
 638         return 0;
 639 }
 640
 641 int
 642 lstcon_dbgrpc_prep(lstcon_node_t *nd, lstcon_rpc_t **crpc)
 643 {
 644         srpc_debug_reqst_t *drq;
 645         int                 rc;
 646
 647         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_DEBUG, 0, crpc);
 648         if (rc != 0)
 649                 return rc;
 650
 651         drq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
 652
 653         drq->dbg_sid   = console_session.ses_id;
 654         drq->dbg_flags = 0;
 655
 656         return rc;
 657 }
 658
 659 int
 660 lstcon_batrpc_prep(lstcon_node_t *nd, int transop,
 661                    lstcon_tsb_hdr_t *tsb, lstcon_rpc_t **crpc)
 662 {
 663         lstcon_batch_t     *batch;
 664         srpc_batch_reqst_t *brq;
 665         int                 rc;
 666
 667         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_BATCH, 0, crpc);
 668         if (rc != 0)
 669                 return rc;
 670
 671         brq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.bat_reqst;
 672
 673         brq->bar_sid     = console_session.ses_id;
 674         brq->bar_bid     = tsb->tsb_id;
 675         brq->bar_testidx = tsb->tsb_index;
 676         brq->bar_opc     = transop == LST_TRANS_TSBRUN ? SRPC_BATCH_OPC_RUN :
 677                            (transop == LST_TRANS_TSBSTOP ? SRPC_BATCH_OPC_STOP:
 678                             SRPC_BATCH_OPC_QUERY);
 679
 680         if (transop != LST_TRANS_TSBRUN &&
 681             transop != LST_TRANS_TSBSTOP)
 682                 return 0;
 683
 684         LASSERT (tsb->tsb_index == 0);
 685
 686         batch = (lstcon_batch_t *)tsb;
 687         brq->bar_arg = batch->bat_arg;
 688
 689         return 0;
 690 }
 691
 692 int
 693 lstcon_statrpc_prep(lstcon_node_t *nd, lstcon_rpc_t **crpc)
 694 {
 695         srpc_stat_reqst_t *srq;
 696         int                rc;
 697
 698         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_QUERY_STAT, 0, crpc);
 699         if (rc != 0)
 700                 return rc;
 701
 702         srq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.stat_reqst;
 703
 704         srq->str_sid  = console_session.ses_id;
 705         srq->str_type = 0; /* XXX remove it */
 706
 707         return 0;
 708 }
 709
 710 lnet_process_id_packed_t *
 711 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
 712 {
 713         lnet_process_id_packed_t *pid;
 714         int                       i;
 715
 716         i = idx / SFW_ID_PER_PAGE;
 717
 718         LASSERT (i < nkiov);
 719
 720         pid = (lnet_process_id_packed_t *)cfs_page_address(kiov[i].kiov_page);
 721
 722         return &pid[idx % SFW_ID_PER_PAGE];
 723 }
 724
 725 int
 726 lstcon_dstnodes_prep(lstcon_group_t *grp, int idx,
 727                      int dist, int span, int nkiov, lnet_kiov_t *kiov)
 728 {
 729         lnet_process_id_packed_t *pid;
 730         lstcon_ndlink_t          *ndl;
 731         lstcon_node_t            *nd;
 732         int                       start;
 733         int                       end;
 734         int                       i = 0;
 735
 736         LASSERT (dist >= 1);
 737         LASSERT (span >= 1);
 738         LASSERT (grp->grp_nnode >= 1);
 739
 740         if (span > grp->grp_nnode)
 741                 return -EINVAL;
 742
 743         start = ((idx / dist) * span) % grp->grp_nnode;
 744         end   = ((idx / dist) * span + span - 1) % grp->grp_nnode;
 745
 746         cfs_list_for_each_entry_typed(ndl, &grp->grp_ndl_list,
 747                                       lstcon_ndlink_t, ndl_link) {
 748                 nd = ndl->ndl_node;
 749                 if (i < start) {
 750                         i ++;
 751                         continue;
 752                 }
 753
 754                 if (i > (end >= start ? end: grp->grp_nnode))
 755                         break;
 756
 757                 pid = lstcon_next_id((i - start), nkiov, kiov);
 758                 pid->nid = nd->nd_id.nid;
 759                 pid->pid = nd->nd_id.pid;
 760                 i++;
 761         }
 762
 763         if (start <= end) /* done */
 764                 return 0;
 765
 766         cfs_list_for_each_entry_typed(ndl, &grp->grp_ndl_list,
 767                                       lstcon_ndlink_t, ndl_link) {
 768                 if (i > grp->grp_nnode + end)
 769                         break;
 770
 771                 nd = ndl->ndl_node;
 772                 pid = lstcon_next_id((i - start), nkiov, kiov);
 773                 pid->nid = nd->nd_id.nid;
 774                 pid->pid = nd->nd_id.pid;
 775                 i++;
 776         }
 777
 778         return 0;
 779 }
 780
 781 int
 782 lstcon_pingrpc_prep(lst_test_ping_param_t *param, srpc_test_reqst_t *req)
 783 {
 784         test_ping_req_t *prq = &req->tsr_u.ping;
 785
 786         prq->png_size   = param->png_size;
 787         prq->png_flags  = param->png_flags;
 788         /* TODO dest */
 789         return 0;
 790 }
 791
 792 int
 793 lstcon_bulkrpc_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
 794 {
 795         test_bulk_req_t *brq = &req->tsr_u.bulk;
 796
 797         brq->blk_opc    = param->blk_opc;
 798         brq->blk_npg    = (param->blk_size + CFS_PAGE_SIZE - 1) / CFS_PAGE_SIZE;
 799         brq->blk_flags  = param->blk_flags;
 800
 801         return 0;
 802 }
 803
 804 int
 805 lstcon_testrpc_prep(lstcon_node_t *nd, int transop,
 806                     lstcon_test_t *test, lstcon_rpc_t **crpc)
 807 {
 808         lstcon_group_t    *sgrp = test->tes_src_grp;
 809         lstcon_group_t    *dgrp = test->tes_dst_grp;
 810         srpc_test_reqst_t *trq;
 811         srpc_bulk_t       *bulk;
 812         int                i;
 813         int                n  = 0;
 814         int                rc = 0;
 815
 816         if (transop == LST_TRANS_TSBCLIADD)
 817                 n = sfw_id_pages(test->tes_span);
 818
 819         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_TEST, n, crpc);
 820         if (rc != 0)
 821                 return rc;
 822
 823         trq  = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.tes_reqst;
 824
 825         if (transop == LST_TRANS_TSBSRVADD) {
 826                 int ndist = (sgrp->grp_nnode + test->tes_dist - 1) / test->tes_dist;
 827                 int nspan = (dgrp->grp_nnode + test->tes_span - 1) / test->tes_span;
 828                 int nmax = (ndist + nspan - 1) / nspan;
 829
 830                 trq->tsr_ndest = 0;
 831                 trq->tsr_loop  = nmax * test->tes_dist * test->tes_concur;
 832
 833         } else {
 834                 bulk = &(*crpc)->crp_rpc->crpc_bulk;
 835
 836                 for (i = 0; i < n; i++) {
 837                         bulk->bk_iovs[i].kiov_offset = 0;
 838                         bulk->bk_iovs[i].kiov_len    = CFS_PAGE_SIZE;
 839                         bulk->bk_iovs[i].kiov_page   = cfs_alloc_page(CFS_ALLOC_STD);
 840
 841                         if (bulk->bk_iovs[i].kiov_page != NULL)
 842                                 continue;
 843
 844                         lstcon_rpc_put(*crpc);
 845                         return -ENOMEM;
 846                 }
 847
 848                 bulk->bk_sink = 0;
 849
 850                 LASSERT (transop == LST_TRANS_TSBCLIADD);
 851
 852                 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
 853                                           test->tes_cliidx++, test->tes_dist,
 854                                           test->tes_span, n, &bulk->bk_iovs[0]);
 855                 if (rc != 0) {
 856                         lstcon_rpc_put(*crpc);
 857                         return rc;
 858                 }
 859
 860                 trq->tsr_ndest = test->tes_span;
 861                 trq->tsr_loop  = test->tes_loop;
 862         }
 863
 864         trq->tsr_sid        = console_session.ses_id;
 865         trq->tsr_bid        = test->tes_hdr.tsb_id;
 866         trq->tsr_concur     = test->tes_concur;
 867         trq->tsr_is_client  = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
 868         trq->tsr_stop_onerr = !!test->tes_stop_onerr;
 869
 870         switch (test->tes_type) {
 871         case LST_TEST_PING:
 872                 trq->tsr_service = SRPC_SERVICE_PING;
 873                 rc = lstcon_pingrpc_prep((lst_test_ping_param_t *)&test->tes_param[0], trq);
 874                 break;
 875         case LST_TEST_BULK:
 876                 trq->tsr_service = SRPC_SERVICE_BRW;
 877                 rc = lstcon_bulkrpc_prep((lst_test_bulk_param_t *)&test->tes_param[0], trq);
 878                 break;
 879         default:
 880                 LBUG();
 881                 break;
 882         }
 883
 884         return rc;
 885 }
 886
 887 void
 888 lstcon_rpc_stat_reply(int transop, srpc_msg_t *msg,
 889                       lstcon_node_t *nd, lstcon_trans_stat_t *stat)
 890 {
 891         srpc_mksn_reply_t  *mksn_rep;
 892         srpc_rmsn_reply_t  *rmsn_rep;
 893         srpc_debug_reply_t *dbg_rep;
 894         srpc_batch_reply_t *bat_rep;
 895         srpc_test_reply_t  *test_rep;
 896         srpc_stat_reply_t  *stat_rep;
 897         int                 rc = 0;
 898
 899         switch (transop) {
 900         case LST_TRANS_SESNEW:
 901                 mksn_rep = &msg->msg_body.mksn_reply;
 902
 903                 if (mksn_rep->mksn_status == 0) {
 904                         lstcon_sesop_stat_success(stat, 1);
 905                         /* session timeout on remote node */
 906                         nd->nd_timeout = mksn_rep->mksn_timeout;
 907                         return;
 908                 }
 909
 910                 LASSERT (mksn_rep->mksn_status == EBUSY ||
 911                          mksn_rep->mksn_status == EINVAL);
 912
 913                 lstcon_sesop_stat_failure(stat, 1);
 914                 rc = mksn_rep->mksn_status;
 915                 break;
 916
 917         case LST_TRANS_SESEND:
 918                 rmsn_rep = &msg->msg_body.rmsn_reply;
 919                 /* ESRCH is not an error for end session */
 920                 if (rmsn_rep->rmsn_status == 0 ||
 921                     rmsn_rep->rmsn_status == ESRCH) {
 922                         lstcon_sesop_stat_success(stat, 1);
 923                         return;
 924                 }
 925
 926                 LASSERT (rmsn_rep->rmsn_status == EBUSY ||
 927                          rmsn_rep->rmsn_status == EINVAL);
 928
 929                 lstcon_sesop_stat_failure(stat, 1);
 930                 rc = rmsn_rep->rmsn_status;
 931                 break;
 932
 933         case LST_TRANS_SESQRY:
 934         case LST_TRANS_SESPING:
 935                 dbg_rep = &msg->msg_body.dbg_reply;
 936
 937                 if (dbg_rep->dbg_status == ESRCH) {
 938                         lstcon_sesqry_stat_unknown(stat, 1);
 939                         return;
 940                 }
 941
 942                 LASSERT (dbg_rep->dbg_status == 0);
 943
 944                 if (lstcon_session_match(dbg_rep->dbg_sid))
 945                         lstcon_sesqry_stat_active(stat, 1);
 946                 else
 947                         lstcon_sesqry_stat_busy(stat, 1);
 948                 return;
 949
 950         case LST_TRANS_TSBRUN:
 951         case LST_TRANS_TSBSTOP:
 952                 bat_rep = &msg->msg_body.bat_reply;
 953
 954                 if (bat_rep->bar_status == 0) {
 955                         lstcon_tsbop_stat_success(stat, 1);
 956                         return;
 957                 }
 958
 959                 if (bat_rep->bar_status == EPERM &&
 960                     transop == LST_TRANS_TSBSTOP) {
 961                         lstcon_tsbop_stat_success(stat, 1);
 962                         return;
 963                 }
 964
 965                 lstcon_tsbop_stat_failure(stat, 1);
 966                 rc = bat_rep->bar_status;
 967                 break;
 968
 969         case LST_TRANS_TSBCLIQRY:
 970         case LST_TRANS_TSBSRVQRY:
 971                 bat_rep = &msg->msg_body.bat_reply;
 972
 973                 if (bat_rep->bar_active != 0)
 974                         lstcon_tsbqry_stat_run(stat, 1);
 975                 else
 976                         lstcon_tsbqry_stat_idle(stat, 1);
 977
 978                 if (bat_rep->bar_status == 0)
 979                         return;
 980
 981                 lstcon_tsbqry_stat_failure(stat, 1);
 982                 rc = bat_rep->bar_status;
 983                 break;
 984
 985         case LST_TRANS_TSBCLIADD:
 986         case LST_TRANS_TSBSRVADD:
 987                 test_rep = &msg->msg_body.tes_reply;
 988
 989                 if (test_rep->tsr_status == 0) {
 990                         lstcon_tsbop_stat_success(stat, 1);
 991                         return;
 992                 }
 993
 994                 lstcon_tsbop_stat_failure(stat, 1);
 995                 rc = test_rep->tsr_status;
 996                 break;
 997
 998         case LST_TRANS_STATQRY:
 999                 stat_rep = &msg->msg_body.stat_reply;
1000
1001                 if (stat_rep->str_status == 0) {
1002                         lstcon_statqry_stat_success(stat, 1);
1003                         return;
1004                 }
1005
1006                 lstcon_statqry_stat_failure(stat, 1);
1007                 rc = stat_rep->str_status;
1008                 break;
1009
1010         default:
1011                 LBUG();
1012         }
1013
1014         if (stat->trs_fwk_errno == 0)
1015                 stat->trs_fwk_errno = rc;
1016
1017         return;
1018 }
1019
1020 int
1021 lstcon_rpc_trans_ndlist(cfs_list_t *ndlist,
1022                         cfs_list_t *translist, int transop,
1023                         void *arg, lstcon_rpc_cond_func_t condition,
1024                         lstcon_rpc_trans_t **transpp)
1025 {
1026         lstcon_rpc_trans_t *trans;
1027         lstcon_ndlink_t    *ndl;
1028         lstcon_node_t      *nd;
1029         lstcon_rpc_t       *rpc;
1030         int                 rc;
1031
1032         /* Creating session RPG for list of nodes */
1033
1034         rc = lstcon_rpc_trans_prep(translist, transop, &trans);
1035         if (rc != 0) {
1036                 CERROR("Can't create transaction %d: %d\n", transop, rc);
1037                 return rc;
1038         }
1039
1040         cfs_list_for_each_entry_typed(ndl, ndlist, lstcon_ndlink_t, ndl_link) {
1041                 rc = condition == NULL ? 1 :
1042                      condition(transop, ndl->ndl_node, arg);
1043
1044                 if (rc == 0)
1045                         continue;
1046
1047                 if (rc < 0) {
1048                         CDEBUG(D_NET, "Condition error while creating RPC "
1049                                       " for transaction %d: %d\n", transop, rc);
1050                         break;
1051                 }
1052
1053                 nd = ndl->ndl_node;
1054
1055                 switch (transop) {
1056                 case LST_TRANS_SESNEW:
1057                 case LST_TRANS_SESEND:
1058                         rc = lstcon_sesrpc_prep(nd, transop, &rpc);
1059                         break;
1060                 case LST_TRANS_SESQRY:
1061                 case LST_TRANS_SESPING:
1062                         rc = lstcon_dbgrpc_prep(nd, &rpc);
1063                         break;
1064                 case LST_TRANS_TSBCLIADD:
1065                 case LST_TRANS_TSBSRVADD:
1066                         rc = lstcon_testrpc_prep(nd, transop,
1067                                                  (lstcon_test_t *)arg, &rpc);
1068                         break;
1069                 case LST_TRANS_TSBRUN:
1070                 case LST_TRANS_TSBSTOP:
1071                 case LST_TRANS_TSBCLIQRY:
1072                 case LST_TRANS_TSBSRVQRY:
1073                         rc = lstcon_batrpc_prep(nd, transop,
1074                                                 (lstcon_tsb_hdr_t *)arg, &rpc);
1075                         break;
1076                 case LST_TRANS_STATQRY:
1077                         rc = lstcon_statrpc_prep(nd, &rpc);
1078                         break;
1079                 default:
1080                         rc = -EINVAL;
1081                         break;
1082                 }
1083
1084                 if (rc != 0) {
1085                         CERROR("Failed to create RPC for transaction %s: %d\n",
1086                                lstcon_rpc_trans_name(transop), rc);
1087                         break;
1088                 }
1089
1090                 lstcon_rpc_trans_addreq(trans, rpc);
1091         }
1092
1093         if (rc == 0) {
1094                 *transpp = trans;
1095                 return 0;
1096         }
1097
1098         lstcon_rpc_trans_destroy(trans);
1099
1100         return rc;
1101 }
1102
1103 void
1104 lstcon_rpc_pinger(void *arg)
1105 {
1106         stt_timer_t        *ptimer = (stt_timer_t *)arg;
1107         lstcon_rpc_trans_t *trans;
1108         lstcon_rpc_t       *crpc;
1109         srpc_msg_t         *rep;
1110         srpc_debug_reqst_t *drq;
1111         lstcon_ndlink_t    *ndl;
1112         lstcon_node_t      *nd;
1113         time_t              intv;
1114         int                 count = 0;
1115         int                 rc;
1116
1117         /* RPC pinger is a special case of transaction,
1118          * it's called by timer at 8 seconds interval.
1119          */
1120         cfs_mutex_down(&console_session.ses_mutex);
1121
1122         if (console_session.ses_shutdown || console_session.ses_expired) {
1123                 cfs_mutex_up(&console_session.ses_mutex);
1124                 return;
1125         }
1126
1127         if (!console_session.ses_expired &&
1128             cfs_time_current_sec() - console_session.ses_laststamp >
1129             (time_t)console_session.ses_timeout)
1130                 console_session.ses_expired = 1;
1131
1132         trans = console_session.ses_ping;
1133
1134         LASSERT (trans != NULL);
1135
1136         cfs_list_for_each_entry_typed(ndl, &console_session.ses_ndl_list,
1137                                       lstcon_ndlink_t, ndl_link) {
1138                 nd = ndl->ndl_node;
1139
1140                 if (console_session.ses_expired) {
1141                         /* idle console, end session on all nodes */
1142                         if (nd->nd_state != LST_NODE_ACTIVE)
1143                                 continue;
1144
1145                         rc = lstcon_sesrpc_prep(nd, LST_TRANS_SESEND, &crpc);
1146                         if (rc != 0) {
1147                                 CERROR("Out of memory\n");
1148                                 break;
1149                         }
1150
1151                         lstcon_rpc_trans_addreq(trans, crpc);
1152                         lstcon_rpc_post(crpc);
1153
1154                         continue;
1155                 }
1156
1157                 crpc = &nd->nd_ping;
1158
1159                 if (crpc->crp_rpc != NULL) {
1160                         LASSERT (crpc->crp_trans == trans);
1161                         LASSERT (!cfs_list_empty(&crpc->crp_link));
1162
1163                         cfs_spin_lock(&crpc->crp_rpc->crpc_lock);
1164
1165                         LASSERT (crpc->crp_posted);
1166
1167                         if (!crpc->crp_finished) {
1168                                 /* in flight */
1169                                 cfs_spin_unlock(&crpc->crp_rpc->crpc_lock);
1170                                 continue;
1171                         }
1172
1173                         cfs_spin_unlock(&crpc->crp_rpc->crpc_lock);
1174
1175                         lstcon_rpc_get_reply(crpc, &rep);
1176
1177                         cfs_list_del_init(&crpc->crp_link);
1178
1179                         lstcon_rpc_put(crpc);
1180                 }
1181
1182                 if (nd->nd_state != LST_NODE_ACTIVE)
1183                         continue;
1184
1185                 intv = cfs_duration_sec(cfs_time_sub(cfs_time_current(),
1186                                                      nd->nd_stamp));
1187                 if (intv < (time_t)nd->nd_timeout / 2)
1188                         continue;
1189
1190                 rc = lstcon_rpc_init(nd, SRPC_SERVICE_DEBUG, 0, 0, crpc);
1191                 if (rc != 0) {
1192                         CERROR("Out of memory\n");
1193                         break;
1194                 }
1195
1196                 drq = &crpc->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
1197
1198                 drq->dbg_sid   = console_session.ses_id;
1199                 drq->dbg_flags = 0;
1200
1201                 lstcon_rpc_trans_addreq(trans, crpc);
1202                 lstcon_rpc_post(crpc);
1203
1204                 count ++;
1205         }
1206
1207         if (console_session.ses_expired) {
1208                 cfs_mutex_up(&console_session.ses_mutex);
1209                 return;
1210         }
1211
1212         CDEBUG(D_NET, "Ping %d nodes in session\n", count);
1213
1214         ptimer->stt_expires = (cfs_time_t)(cfs_time_current_sec() + LST_PING_INTERVAL);
1215         stt_add_timer(ptimer);
1216
1217         cfs_mutex_up(&console_session.ses_mutex);
1218 }
1219
1220 int
1221 lstcon_rpc_pinger_start(void)
1222 {
1223         stt_timer_t    *ptimer;
1224         int             rc;
1225
1226         LASSERT (cfs_list_empty(&console_session.ses_rpc_freelist));
1227         LASSERT (cfs_atomic_read(&console_session.ses_rpc_counter) == 0);
1228
1229         rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1230                                    &console_session.ses_ping);
1231         if (rc != 0) {
1232                 CERROR("Failed to create console pinger\n");
1233                 return rc;
1234         }
1235
1236         ptimer = &console_session.ses_ping_timer;
1237         ptimer->stt_expires = (cfs_time_t)(cfs_time_current_sec() + LST_PING_INTERVAL);
1238
1239         stt_add_timer(ptimer);
1240
1241         return 0;
1242 }
1243
1244 void
1245 lstcon_rpc_pinger_stop(void)
1246 {
1247         LASSERT (console_session.ses_shutdown);
1248
1249         stt_del_timer(&console_session.ses_ping_timer);
1250
1251         lstcon_rpc_trans_abort(console_session.ses_ping, -ESHUTDOWN);
1252         lstcon_rpc_trans_stat(console_session.ses_ping, lstcon_trans_stat());
1253         lstcon_rpc_trans_destroy(console_session.ses_ping);
1254
1255         memset(lstcon_trans_stat(), 0, sizeof(lstcon_trans_stat_t));
1256
1257         console_session.ses_ping = NULL;
1258 }
1259
1260 void
1261 lstcon_rpc_cleanup_wait(void)
1262 {
1263         lstcon_rpc_trans_t *trans;
1264         lstcon_rpc_t       *crpc;
1265         cfs_list_t         *pacer;
1266         cfs_list_t          zlist;
1267
1268         /* Called with hold of global mutex */
1269
1270         LASSERT (console_session.ses_shutdown);
1271
1272         while (!cfs_list_empty(&console_session.ses_trans_list)) {
1273                 cfs_list_for_each(pacer, &console_session.ses_trans_list) {
1274                         trans = cfs_list_entry(pacer, lstcon_rpc_trans_t,
1275                                                tas_link);
1276
1277                         CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1278                                lstcon_rpc_trans_name(trans->tas_opc));
1279
1280                         cfs_waitq_signal(&trans->tas_waitq);
1281                 }
1282
1283                 cfs_mutex_up(&console_session.ses_mutex);
1284
1285                 CWARN("Session is shutting down, "
1286                       "waiting for termination of transactions\n");
1287                 cfs_pause(cfs_time_seconds(1));
1288
1289                 cfs_mutex_down(&console_session.ses_mutex);
1290         }
1291
1292         cfs_spin_lock(&console_session.ses_rpc_lock);
1293
1294         lst_wait_until((cfs_atomic_read(&console_session.ses_rpc_counter) == 0),
1295                        console_session.ses_rpc_lock,
1296                        "Network is not accessable or target is down, "
1297                        "waiting for %d console RPCs to being recycled\n",
1298                        cfs_atomic_read(&console_session.ses_rpc_counter));
1299
1300         cfs_list_add(&zlist, &console_session.ses_rpc_freelist);
1301         cfs_list_del_init(&console_session.ses_rpc_freelist);
1302
1303         cfs_spin_unlock(&console_session.ses_rpc_lock);
1304
1305         while (!cfs_list_empty(&zlist)) {
1306                 crpc = cfs_list_entry(zlist.next, lstcon_rpc_t, crp_link);
1307
1308                 cfs_list_del(&crpc->crp_link);
1309                 LIBCFS_FREE(crpc, sizeof(lstcon_rpc_t));
1310         }
1311 }
1312
1313 int
1314 lstcon_rpc_module_init(void)
1315 {
1316         CFS_INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1317         console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1318         console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1319
1320         console_session.ses_ping = NULL;
1321
1322         cfs_spin_lock_init(&console_session.ses_rpc_lock);
1323         cfs_atomic_set(&console_session.ses_rpc_counter, 0);
1324         CFS_INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1325
1326         return 0;
1327 }
1328
1329 void
1330 lstcon_rpc_module_fini(void)
1331 {
1332         LASSERT (cfs_list_empty(&console_session.ses_rpc_freelist));
1333         LASSERT (cfs_atomic_read(&console_session.ses_rpc_counter) == 0);
1334 }
1335
1336 #endif