kernel/drivers/staging/lustre/lnet/selftest/conrpc.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, Intel Corporation.
  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 <liang@whamcloud.com>
  41  */
  42
  43 #include "../../include/linux/libcfs/libcfs.h"
  44 #include "../../include/linux/lnet/lib-lnet.h"
  45 #include "timer.h"
  46 #include "conrpc.h"
  47 #include "console.h"
  48
  49 void lstcon_rpc_stat_reply(lstcon_rpc_trans_t *, srpc_msg_t *,
  50                            lstcon_node_t *, lstcon_trans_stat_t *);
  51
  52 static void
  53 lstcon_rpc_done(srpc_client_rpc_t *rpc)
  54 {
  55         lstcon_rpc_t *crpc = (lstcon_rpc_t *)rpc->crpc_priv;
  56
  57         LASSERT(crpc != NULL && rpc == crpc->crp_rpc);
  58         LASSERT(crpc->crp_posted && !crpc->crp_finished);
  59
  60         spin_lock(&rpc->crpc_lock);
  61
  62         if (crpc->crp_trans == NULL) {
  63                 /* Orphan RPC is not in any transaction,
  64                  * I'm just a poor body and nobody loves me */
  65                 spin_unlock(&rpc->crpc_lock);
  66
  67                 /* release it */
  68                 lstcon_rpc_put(crpc);
  69                 return;
  70         }
  71
  72         /* not an orphan RPC */
  73         crpc->crp_finished = 1;
  74
  75         if (crpc->crp_stamp == 0) {
  76                 /* not aborted */
  77                 LASSERT(crpc->crp_status == 0);
  78
  79                 crpc->crp_stamp  = cfs_time_current();
  80                 crpc->crp_status = rpc->crpc_status;
  81         }
  82
  83         /* wakeup (transaction)thread if I'm the last RPC in the transaction */
  84         if (atomic_dec_and_test(&crpc->crp_trans->tas_remaining))
  85                 wake_up(&crpc->crp_trans->tas_waitq);
  86
  87         spin_unlock(&rpc->crpc_lock);
  88 }
  89
  90 static int
  91 lstcon_rpc_init(lstcon_node_t *nd, int service, unsigned feats,
  92                 int bulk_npg, int bulk_len, int embedded, lstcon_rpc_t *crpc)
  93 {
  94         crpc->crp_rpc = sfw_create_rpc(nd->nd_id, service,
  95                                        feats, bulk_npg, bulk_len,
  96                                        lstcon_rpc_done, (void *)crpc);
  97         if (crpc->crp_rpc == NULL)
  98                 return -ENOMEM;
  99
 100         crpc->crp_trans    = NULL;
 101         crpc->crp_node     = nd;
 102         crpc->crp_posted   = 0;
 103         crpc->crp_finished = 0;
 104         crpc->crp_unpacked = 0;
 105         crpc->crp_status   = 0;
 106         crpc->crp_stamp    = 0;
 107         crpc->crp_embedded = embedded;
 108         INIT_LIST_HEAD(&crpc->crp_link);
 109
 110         atomic_inc(&console_session.ses_rpc_counter);
 111
 112         return 0;
 113 }
 114
 115 static int
 116 lstcon_rpc_prep(lstcon_node_t *nd, int service, unsigned feats,
 117                 int bulk_npg, int bulk_len, lstcon_rpc_t **crpcpp)
 118 {
 119         lstcon_rpc_t *crpc = NULL;
 120         int rc;
 121
 122         spin_lock(&console_session.ses_rpc_lock);
 123
 124         if (!list_empty(&console_session.ses_rpc_freelist)) {
 125                 crpc = list_entry(console_session.ses_rpc_freelist.next,
 126                                       lstcon_rpc_t, crp_link);
 127                 list_del_init(&crpc->crp_link);
 128         }
 129
 130         spin_unlock(&console_session.ses_rpc_lock);
 131
 132         if (crpc == NULL) {
 133                 LIBCFS_ALLOC(crpc, sizeof(*crpc));
 134                 if (crpc == NULL)
 135                         return -ENOMEM;
 136         }
 137
 138         rc = lstcon_rpc_init(nd, service, feats, bulk_npg, bulk_len, 0, crpc);
 139         if (rc == 0) {
 140                 *crpcpp = crpc;
 141                 return 0;
 142         }
 143
 144         LIBCFS_FREE(crpc, sizeof(*crpc));
 145
 146         return rc;
 147 }
 148
 149 void
 150 lstcon_rpc_put(lstcon_rpc_t *crpc)
 151 {
 152         srpc_bulk_t *bulk = &crpc->crp_rpc->crpc_bulk;
 153         int i;
 154
 155         LASSERT(list_empty(&crpc->crp_link));
 156
 157         for (i = 0; i < bulk->bk_niov; i++) {
 158                 if (bulk->bk_iovs[i].kiov_page == NULL)
 159                         continue;
 160
 161                 __free_page(bulk->bk_iovs[i].kiov_page);
 162         }
 163
 164         srpc_client_rpc_decref(crpc->crp_rpc);
 165
 166         if (crpc->crp_embedded) {
 167                 /* embedded RPC, don't recycle it */
 168                 memset(crpc, 0, sizeof(*crpc));
 169                 crpc->crp_embedded = 1;
 170
 171         } else {
 172                 spin_lock(&console_session.ses_rpc_lock);
 173
 174                 list_add(&crpc->crp_link,
 175                              &console_session.ses_rpc_freelist);
 176
 177                 spin_unlock(&console_session.ses_rpc_lock);
 178         }
 179
 180         /* RPC is not alive now */
 181         atomic_dec(&console_session.ses_rpc_counter);
 182 }
 183
 184 static void
 185 lstcon_rpc_post(lstcon_rpc_t *crpc)
 186 {
 187         lstcon_rpc_trans_t *trans = crpc->crp_trans;
 188
 189         LASSERT(trans != NULL);
 190
 191         atomic_inc(&trans->tas_remaining);
 192         crpc->crp_posted = 1;
 193
 194         sfw_post_rpc(crpc->crp_rpc);
 195 }
 196
 197 static char *
 198 lstcon_rpc_trans_name(int transop)
 199 {
 200         if (transop == LST_TRANS_SESNEW)
 201                 return "SESNEW";
 202
 203         if (transop == LST_TRANS_SESEND)
 204                 return "SESEND";
 205
 206         if (transop == LST_TRANS_SESQRY)
 207                 return "SESQRY";
 208
 209         if (transop == LST_TRANS_SESPING)
 210                 return "SESPING";
 211
 212         if (transop == LST_TRANS_TSBCLIADD)
 213                 return "TSBCLIADD";
 214
 215         if (transop == LST_TRANS_TSBSRVADD)
 216                 return "TSBSRVADD";
 217
 218         if (transop == LST_TRANS_TSBRUN)
 219                 return "TSBRUN";
 220
 221         if (transop == LST_TRANS_TSBSTOP)
 222                 return "TSBSTOP";
 223
 224         if (transop == LST_TRANS_TSBCLIQRY)
 225                 return "TSBCLIQRY";
 226
 227         if (transop == LST_TRANS_TSBSRVQRY)
 228                 return "TSBSRVQRY";
 229
 230         if (transop == LST_TRANS_STATQRY)
 231                 return "STATQRY";
 232
 233         return "Unknown";
 234 }
 235
 236 int
 237 lstcon_rpc_trans_prep(struct list_head *translist,
 238                       int transop, lstcon_rpc_trans_t **transpp)
 239 {
 240         lstcon_rpc_trans_t *trans;
 241
 242         if (translist != NULL) {
 243                 list_for_each_entry(trans, translist, tas_link) {
 244                         /* Can't enqueue two private transaction on
 245                          * the same object */
 246                         if ((trans->tas_opc & transop) == LST_TRANS_PRIVATE)
 247                                 return -EPERM;
 248                 }
 249         }
 250
 251         /* create a trans group */
 252         LIBCFS_ALLOC(trans, sizeof(*trans));
 253         if (trans == NULL)
 254                 return -ENOMEM;
 255
 256         trans->tas_opc = transop;
 257
 258         if (translist == NULL)
 259                 INIT_LIST_HEAD(&trans->tas_olink);
 260         else
 261                 list_add_tail(&trans->tas_olink, translist);
 262
 263         list_add_tail(&trans->tas_link, &console_session.ses_trans_list);
 264
 265         INIT_LIST_HEAD(&trans->tas_rpcs_list);
 266         atomic_set(&trans->tas_remaining, 0);
 267         init_waitqueue_head(&trans->tas_waitq);
 268
 269         spin_lock(&console_session.ses_rpc_lock);
 270         trans->tas_features = console_session.ses_features;
 271         spin_unlock(&console_session.ses_rpc_lock);
 272
 273         *transpp = trans;
 274         return 0;
 275 }
 276
 277 void
 278 lstcon_rpc_trans_addreq(lstcon_rpc_trans_t *trans, lstcon_rpc_t *crpc)
 279 {
 280         list_add_tail(&crpc->crp_link, &trans->tas_rpcs_list);
 281         crpc->crp_trans = trans;
 282 }
 283
 284 void
 285 lstcon_rpc_trans_abort(lstcon_rpc_trans_t *trans, int error)
 286 {
 287         srpc_client_rpc_t *rpc;
 288         lstcon_rpc_t      *crpc;
 289         lstcon_node_t     *nd;
 290
 291         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 292                 rpc = crpc->crp_rpc;
 293
 294                 spin_lock(&rpc->crpc_lock);
 295
 296                 if (!crpc->crp_posted || /* not posted */
 297                     crpc->crp_stamp != 0) { /* rpc done or aborted already */
 298                         if (crpc->crp_stamp == 0) {
 299                                 crpc->crp_stamp = cfs_time_current();
 300                                 crpc->crp_status = -EINTR;
 301                         }
 302                         spin_unlock(&rpc->crpc_lock);
 303                         continue;
 304                 }
 305
 306                 crpc->crp_stamp  = cfs_time_current();
 307                 crpc->crp_status = error;
 308
 309                 spin_unlock(&rpc->crpc_lock);
 310
 311                 sfw_abort_rpc(rpc);
 312
 313                 if (error != ETIMEDOUT)
 314                         continue;
 315
 316                 nd = crpc->crp_node;
 317                 if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 318                         continue;
 319
 320                 nd->nd_stamp = crpc->crp_stamp;
 321                 nd->nd_state = LST_NODE_DOWN;
 322         }
 323 }
 324
 325 static int
 326 lstcon_rpc_trans_check(lstcon_rpc_trans_t *trans)
 327 {
 328         if (console_session.ses_shutdown &&
 329             !list_empty(&trans->tas_olink)) /* Not an end session RPC */
 330                 return 1;
 331
 332         return (atomic_read(&trans->tas_remaining) == 0) ? 1 : 0;
 333 }
 334
 335 int
 336 lstcon_rpc_trans_postwait(lstcon_rpc_trans_t *trans, int timeout)
 337 {
 338         lstcon_rpc_t *crpc;
 339         int rc;
 340
 341         if (list_empty(&trans->tas_rpcs_list))
 342                 return 0;
 343
 344         if (timeout < LST_TRANS_MIN_TIMEOUT)
 345                 timeout = LST_TRANS_MIN_TIMEOUT;
 346
 347         CDEBUG(D_NET, "Transaction %s started\n",
 348                lstcon_rpc_trans_name(trans->tas_opc));
 349
 350         /* post all requests */
 351         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 352                 LASSERT(!crpc->crp_posted);
 353
 354                 lstcon_rpc_post(crpc);
 355         }
 356
 357         mutex_unlock(&console_session.ses_mutex);
 358
 359         rc = wait_event_interruptible_timeout(trans->tas_waitq,
 360                                               lstcon_rpc_trans_check(trans),
 361                                               cfs_time_seconds(timeout));
 362         rc = (rc > 0) ? 0 : ((rc < 0) ? -EINTR : -ETIMEDOUT);
 363
 364         mutex_lock(&console_session.ses_mutex);
 365
 366         if (console_session.ses_shutdown)
 367                 rc = -ESHUTDOWN;
 368
 369         if (rc != 0 || atomic_read(&trans->tas_remaining) != 0) {
 370                 /* treat short timeout as canceled */
 371                 if (rc == -ETIMEDOUT && timeout < LST_TRANS_MIN_TIMEOUT * 2)
 372                         rc = -EINTR;
 373
 374                 lstcon_rpc_trans_abort(trans, rc);
 375         }
 376
 377         CDEBUG(D_NET, "Transaction %s stopped: %d\n",
 378                lstcon_rpc_trans_name(trans->tas_opc), rc);
 379
 380         lstcon_rpc_trans_stat(trans, lstcon_trans_stat());
 381
 382         return rc;
 383 }
 384
 385 static int
 386 lstcon_rpc_get_reply(lstcon_rpc_t *crpc, srpc_msg_t **msgpp)
 387 {
 388         lstcon_node_t *nd  = crpc->crp_node;
 389         srpc_client_rpc_t *rpc = crpc->crp_rpc;
 390         srpc_generic_reply_t *rep;
 391
 392         LASSERT(nd != NULL && rpc != NULL);
 393         LASSERT(crpc->crp_stamp != 0);
 394
 395         if (crpc->crp_status != 0) {
 396                 *msgpp = NULL;
 397                 return crpc->crp_status;
 398         }
 399
 400         *msgpp = &rpc->crpc_replymsg;
 401         if (!crpc->crp_unpacked) {
 402                 sfw_unpack_message(*msgpp);
 403                 crpc->crp_unpacked = 1;
 404         }
 405
 406         if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 407                 return 0;
 408
 409         nd->nd_stamp = crpc->crp_stamp;
 410         rep = &(*msgpp)->msg_body.reply;
 411
 412         if (rep->sid.ses_nid == LNET_NID_ANY)
 413                 nd->nd_state = LST_NODE_UNKNOWN;
 414         else if (lstcon_session_match(rep->sid))
 415                 nd->nd_state = LST_NODE_ACTIVE;
 416         else
 417                 nd->nd_state = LST_NODE_BUSY;
 418
 419         return 0;
 420 }
 421
 422 void
 423 lstcon_rpc_trans_stat(lstcon_rpc_trans_t *trans, lstcon_trans_stat_t *stat)
 424 {
 425         lstcon_rpc_t  *crpc;
 426         srpc_msg_t *rep;
 427         int error;
 428
 429         LASSERT(stat != NULL);
 430
 431         memset(stat, 0, sizeof(*stat));
 432
 433         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 434                 lstcon_rpc_stat_total(stat, 1);
 435
 436                 LASSERT(crpc->crp_stamp != 0);
 437
 438                 error = lstcon_rpc_get_reply(crpc, &rep);
 439                 if (error != 0) {
 440                         lstcon_rpc_stat_failure(stat, 1);
 441                         if (stat->trs_rpc_errno == 0)
 442                                 stat->trs_rpc_errno = -error;
 443
 444                         continue;
 445                 }
 446
 447                 lstcon_rpc_stat_success(stat, 1);
 448
 449                 lstcon_rpc_stat_reply(trans, rep, crpc->crp_node, stat);
 450         }
 451
 452         if (trans->tas_opc == LST_TRANS_SESNEW && stat->trs_fwk_errno == 0) {
 453                 stat->trs_fwk_errno =
 454                       lstcon_session_feats_check(trans->tas_features);
 455         }
 456
 457         CDEBUG(D_NET, "transaction %s : success %d, failure %d, total %d, RPC error(%d), Framework error(%d)\n",
 458                lstcon_rpc_trans_name(trans->tas_opc),
 459                lstcon_rpc_stat_success(stat, 0),
 460                lstcon_rpc_stat_failure(stat, 0),
 461                lstcon_rpc_stat_total(stat, 0),
 462                stat->trs_rpc_errno, stat->trs_fwk_errno);
 463
 464         return;
 465 }
 466
 467 int
 468 lstcon_rpc_trans_interpreter(lstcon_rpc_trans_t *trans,
 469                              struct list_head *head_up,
 470                              lstcon_rpc_readent_func_t readent)
 471 {
 472         struct list_head tmp;
 473         struct list_head *next;
 474         lstcon_rpc_ent_t *ent;
 475         srpc_generic_reply_t *rep;
 476         lstcon_rpc_t *crpc;
 477         srpc_msg_t *msg;
 478         lstcon_node_t *nd;
 479         long dur;
 480         struct timeval tv;
 481         int error;
 482
 483         LASSERT(head_up != NULL);
 484
 485         next = head_up;
 486
 487         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 488                 if (copy_from_user(&tmp, next,
 489                                        sizeof(struct list_head)))
 490                         return -EFAULT;
 491
 492                 if (tmp.next == head_up)
 493                         return 0;
 494
 495                 next = tmp.next;
 496
 497                 ent = list_entry(next, lstcon_rpc_ent_t, rpe_link);
 498
 499                 LASSERT(crpc->crp_stamp != 0);
 500
 501                 error = lstcon_rpc_get_reply(crpc, &msg);
 502
 503                 nd = crpc->crp_node;
 504
 505                 dur = (long)cfs_time_sub(crpc->crp_stamp,
 506                       (unsigned long)console_session.ses_id.ses_stamp);
 507                 jiffies_to_timeval(dur, &tv);
 508
 509                 if (copy_to_user(&ent->rpe_peer,
 510                                      &nd->nd_id, sizeof(lnet_process_id_t)) ||
 511                     copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
 512                     copy_to_user(&ent->rpe_state,
 513                                      &nd->nd_state, sizeof(nd->nd_state)) ||
 514                     copy_to_user(&ent->rpe_rpc_errno, &error,
 515                                      sizeof(error)))
 516                         return -EFAULT;
 517
 518                 if (error != 0)
 519                         continue;
 520
 521                 /* RPC is done */
 522                 rep = (srpc_generic_reply_t *)&msg->msg_body.reply;
 523
 524                 if (copy_to_user(&ent->rpe_sid,
 525                                      &rep->sid, sizeof(lst_sid_t)) ||
 526                     copy_to_user(&ent->rpe_fwk_errno,
 527                                      &rep->status, sizeof(rep->status)))
 528                         return -EFAULT;
 529
 530                 if (readent == NULL)
 531                         continue;
 532
 533                 error = readent(trans->tas_opc, msg, ent);
 534
 535                 if (error != 0)
 536                         return error;
 537         }
 538
 539         return 0;
 540 }
 541
 542 void
 543 lstcon_rpc_trans_destroy(lstcon_rpc_trans_t *trans)
 544 {
 545         srpc_client_rpc_t *rpc;
 546         lstcon_rpc_t *crpc;
 547         lstcon_rpc_t *tmp;
 548         int count = 0;
 549
 550         list_for_each_entry_safe(crpc, tmp, &trans->tas_rpcs_list,
 551                                  crp_link) {
 552                 rpc = crpc->crp_rpc;
 553
 554                 spin_lock(&rpc->crpc_lock);
 555
 556                 /* free it if not posted or finished already */
 557                 if (!crpc->crp_posted || crpc->crp_finished) {
 558                         spin_unlock(&rpc->crpc_lock);
 559
 560                         list_del_init(&crpc->crp_link);
 561                         lstcon_rpc_put(crpc);
 562
 563                         continue;
 564                 }
 565
 566                 /* rpcs can be still not callbacked (even LNetMDUnlink is called)
 567                  * because huge timeout for inaccessible network, don't make
 568                  * user wait for them, just abandon them, they will be recycled
 569                  * in callback */
 570
 571                 LASSERT(crpc->crp_status != 0);
 572
 573                 crpc->crp_node  = NULL;
 574                 crpc->crp_trans = NULL;
 575                 list_del_init(&crpc->crp_link);
 576                 count++;
 577
 578                 spin_unlock(&rpc->crpc_lock);
 579
 580                 atomic_dec(&trans->tas_remaining);
 581         }
 582
 583         LASSERT(atomic_read(&trans->tas_remaining) == 0);
 584
 585         list_del(&trans->tas_link);
 586         if (!list_empty(&trans->tas_olink))
 587                 list_del(&trans->tas_olink);
 588
 589         CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
 590                lstcon_rpc_trans_name(trans->tas_opc), count);
 591
 592         LIBCFS_FREE(trans, sizeof(*trans));
 593
 594         return;
 595 }
 596
 597 int
 598 lstcon_sesrpc_prep(lstcon_node_t *nd, int transop,
 599                    unsigned feats, lstcon_rpc_t **crpc)
 600 {
 601         srpc_mksn_reqst_t *msrq;
 602         srpc_rmsn_reqst_t *rsrq;
 603         int rc;
 604
 605         switch (transop) {
 606         case LST_TRANS_SESNEW:
 607                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_MAKE_SESSION,
 608                                      feats, 0, 0, crpc);
 609                 if (rc != 0)
 610                         return rc;
 611
 612                 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 613                 msrq->mksn_sid     = console_session.ses_id;
 614                 msrq->mksn_force   = console_session.ses_force;
 615                 strncpy(msrq->mksn_name, console_session.ses_name,
 616                         strlen(console_session.ses_name));
 617                 break;
 618
 619         case LST_TRANS_SESEND:
 620                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION,
 621                                      feats, 0, 0, crpc);
 622                 if (rc != 0)
 623                         return rc;
 624
 625                 rsrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.rmsn_reqst;
 626                 rsrq->rmsn_sid = console_session.ses_id;
 627                 break;
 628
 629         default:
 630                 LBUG();
 631         }
 632
 633         return 0;
 634 }
 635
 636 int
 637 lstcon_dbgrpc_prep(lstcon_node_t *nd, unsigned feats, lstcon_rpc_t **crpc)
 638 {
 639         srpc_debug_reqst_t *drq;
 640         int rc;
 641
 642         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_DEBUG, feats, 0, 0, crpc);
 643         if (rc != 0)
 644                 return rc;
 645
 646         drq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
 647
 648         drq->dbg_sid   = console_session.ses_id;
 649         drq->dbg_flags = 0;
 650
 651         return rc;
 652 }
 653
 654 int
 655 lstcon_batrpc_prep(lstcon_node_t *nd, int transop, unsigned feats,
 656                    lstcon_tsb_hdr_t *tsb, lstcon_rpc_t **crpc)
 657 {
 658         lstcon_batch_t     *batch;
 659         srpc_batch_reqst_t *brq;
 660         int                 rc;
 661
 662         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_BATCH, feats, 0, 0, crpc);
 663         if (rc != 0)
 664                 return rc;
 665
 666         brq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.bat_reqst;
 667
 668         brq->bar_sid     = console_session.ses_id;
 669         brq->bar_bid     = tsb->tsb_id;
 670         brq->bar_testidx = tsb->tsb_index;
 671         brq->bar_opc     = transop == LST_TRANS_TSBRUN ? SRPC_BATCH_OPC_RUN :
 672                            (transop == LST_TRANS_TSBSTOP ? SRPC_BATCH_OPC_STOP :
 673                             SRPC_BATCH_OPC_QUERY);
 674
 675         if (transop != LST_TRANS_TSBRUN &&
 676             transop != LST_TRANS_TSBSTOP)
 677                 return 0;
 678
 679         LASSERT(tsb->tsb_index == 0);
 680
 681         batch = (lstcon_batch_t *)tsb;
 682         brq->bar_arg = batch->bat_arg;
 683
 684         return 0;
 685 }
 686
 687 int
 688 lstcon_statrpc_prep(lstcon_node_t *nd, unsigned feats, lstcon_rpc_t **crpc)
 689 {
 690         srpc_stat_reqst_t *srq;
 691         int                rc;
 692
 693         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_QUERY_STAT, feats, 0, 0, crpc);
 694         if (rc != 0)
 695                 return rc;
 696
 697         srq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.stat_reqst;
 698
 699         srq->str_sid  = console_session.ses_id;
 700         srq->str_type = 0; /* XXX remove it */
 701
 702         return 0;
 703 }
 704
 705 static lnet_process_id_packed_t *
 706 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
 707 {
 708         lnet_process_id_packed_t *pid;
 709         int i;
 710
 711         i = idx / SFW_ID_PER_PAGE;
 712
 713         LASSERT(i < nkiov);
 714
 715         pid = (lnet_process_id_packed_t *)page_address(kiov[i].kiov_page);
 716
 717         return &pid[idx % SFW_ID_PER_PAGE];
 718 }
 719
 720 static int
 721 lstcon_dstnodes_prep(lstcon_group_t *grp, int idx,
 722                      int dist, int span, int nkiov, lnet_kiov_t *kiov)
 723 {
 724         lnet_process_id_packed_t *pid;
 725         lstcon_ndlink_t *ndl;
 726         lstcon_node_t *nd;
 727         int start;
 728         int end;
 729         int i = 0;
 730
 731         LASSERT(dist >= 1);
 732         LASSERT(span >= 1);
 733         LASSERT(grp->grp_nnode >= 1);
 734
 735         if (span > grp->grp_nnode)
 736                 return -EINVAL;
 737
 738         start = ((idx / dist) * span) % grp->grp_nnode;
 739         end   = ((idx / dist) * span + span - 1) % grp->grp_nnode;
 740
 741         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 742                 nd = ndl->ndl_node;
 743                 if (i < start) {
 744                         i++;
 745                         continue;
 746                 }
 747
 748                 if (i > (end >= start ? end : grp->grp_nnode))
 749                         break;
 750
 751                 pid = lstcon_next_id((i - start), nkiov, kiov);
 752                 pid->nid = nd->nd_id.nid;
 753                 pid->pid = nd->nd_id.pid;
 754                 i++;
 755         }
 756
 757         if (start <= end) /* done */
 758                 return 0;
 759
 760         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 761                 if (i > grp->grp_nnode + end)
 762                         break;
 763
 764                 nd = ndl->ndl_node;
 765                 pid = lstcon_next_id((i - start), nkiov, kiov);
 766                 pid->nid = nd->nd_id.nid;
 767                 pid->pid = nd->nd_id.pid;
 768                 i++;
 769         }
 770
 771         return 0;
 772 }
 773
 774 static int
 775 lstcon_pingrpc_prep(lst_test_ping_param_t *param, srpc_test_reqst_t *req)
 776 {
 777         test_ping_req_t *prq = &req->tsr_u.ping;
 778
 779         prq->png_size  = param->png_size;
 780         prq->png_flags = param->png_flags;
 781         /* TODO dest */
 782         return 0;
 783 }
 784
 785 static int
 786 lstcon_bulkrpc_v0_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
 787 {
 788         test_bulk_req_t *brq = &req->tsr_u.bulk_v0;
 789
 790         brq->blk_opc   = param->blk_opc;
 791         brq->blk_npg   = (param->blk_size + PAGE_CACHE_SIZE - 1) /
 792                           PAGE_CACHE_SIZE;
 793         brq->blk_flags = param->blk_flags;
 794
 795         return 0;
 796 }
 797
 798 static int
 799 lstcon_bulkrpc_v1_prep(lst_test_bulk_param_t *param, srpc_test_reqst_t *req)
 800 {
 801         test_bulk_req_v1_t *brq = &req->tsr_u.bulk_v1;
 802
 803         brq->blk_opc    = param->blk_opc;
 804         brq->blk_flags  = param->blk_flags;
 805         brq->blk_len    = param->blk_size;
 806         brq->blk_offset = 0; /* reserved */
 807
 808         return 0;
 809 }
 810
 811 int
 812 lstcon_testrpc_prep(lstcon_node_t *nd, int transop, unsigned feats,
 813                     lstcon_test_t *test, lstcon_rpc_t **crpc)
 814 {
 815         lstcon_group_t    *sgrp = test->tes_src_grp;
 816         lstcon_group_t    *dgrp = test->tes_dst_grp;
 817         srpc_test_reqst_t *trq;
 818         srpc_bulk_t       *bulk;
 819         int                i;
 820         int                npg = 0;
 821         int                nob = 0;
 822         int                rc  = 0;
 823
 824         if (transop == LST_TRANS_TSBCLIADD) {
 825                 npg = sfw_id_pages(test->tes_span);
 826                 nob = (feats & LST_FEAT_BULK_LEN) == 0 ?
 827                       npg * PAGE_CACHE_SIZE :
 828                       sizeof(lnet_process_id_packed_t) * test->tes_span;
 829         }
 830
 831         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_TEST, feats, npg, nob, crpc);
 832         if (rc != 0)
 833                 return rc;
 834
 835         trq  = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.tes_reqst;
 836
 837         if (transop == LST_TRANS_TSBSRVADD) {
 838                 int ndist = (sgrp->grp_nnode + test->tes_dist - 1) /
 839                             test->tes_dist;
 840                 int nspan = (dgrp->grp_nnode + test->tes_span - 1) /
 841                             test->tes_span;
 842                 int nmax = (ndist + nspan - 1) / nspan;
 843
 844                 trq->tsr_ndest = 0;
 845                 trq->tsr_loop  = nmax * test->tes_dist * test->tes_concur;
 846
 847         } else {
 848                 bulk = &(*crpc)->crp_rpc->crpc_bulk;
 849
 850                 for (i = 0; i < npg; i++) {
 851                         int     len;
 852
 853                         LASSERT(nob > 0);
 854
 855                         len = (feats & LST_FEAT_BULK_LEN) == 0 ?
 856                               PAGE_CACHE_SIZE :
 857                               min_t(int, nob, PAGE_CACHE_SIZE);
 858                         nob -= len;
 859
 860                         bulk->bk_iovs[i].kiov_offset = 0;
 861                         bulk->bk_iovs[i].kiov_len    = len;
 862                         bulk->bk_iovs[i].kiov_page   =
 863                                 alloc_page(GFP_KERNEL);
 864
 865                         if (bulk->bk_iovs[i].kiov_page == NULL) {
 866                                 lstcon_rpc_put(*crpc);
 867                                 return -ENOMEM;
 868                         }
 869                 }
 870
 871                 bulk->bk_sink = 0;
 872
 873                 LASSERT(transop == LST_TRANS_TSBCLIADD);
 874
 875                 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
 876                                           test->tes_cliidx++,
 877                                           test->tes_dist,
 878                                           test->tes_span,
 879                                           npg, &bulk->bk_iovs[0]);
 880                 if (rc != 0) {
 881                         lstcon_rpc_put(*crpc);
 882                         return rc;
 883                 }
 884
 885                 trq->tsr_ndest = test->tes_span;
 886                 trq->tsr_loop  = test->tes_loop;
 887         }
 888
 889         trq->tsr_sid        = console_session.ses_id;
 890         trq->tsr_bid        = test->tes_hdr.tsb_id;
 891         trq->tsr_concur     = test->tes_concur;
 892         trq->tsr_is_client  = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
 893         trq->tsr_stop_onerr = !!test->tes_stop_onerr;
 894
 895         switch (test->tes_type) {
 896         case LST_TEST_PING:
 897                 trq->tsr_service = SRPC_SERVICE_PING;
 898                 rc = lstcon_pingrpc_prep((lst_test_ping_param_t *)
 899                                          &test->tes_param[0], trq);
 900                 break;
 901
 902         case LST_TEST_BULK:
 903                 trq->tsr_service = SRPC_SERVICE_BRW;
 904                 if ((feats & LST_FEAT_BULK_LEN) == 0) {
 905                         rc = lstcon_bulkrpc_v0_prep((lst_test_bulk_param_t *)
 906                                                     &test->tes_param[0], trq);
 907                 } else {
 908                         rc = lstcon_bulkrpc_v1_prep((lst_test_bulk_param_t *)
 909                                                     &test->tes_param[0], trq);
 910                 }
 911
 912                 break;
 913         default:
 914                 LBUG();
 915                 break;
 916         }
 917
 918         return rc;
 919 }
 920
 921 static int
 922 lstcon_sesnew_stat_reply(lstcon_rpc_trans_t *trans,
 923                          lstcon_node_t *nd, srpc_msg_t *reply)
 924 {
 925         srpc_mksn_reply_t *mksn_rep = &reply->msg_body.mksn_reply;
 926         int                status   = mksn_rep->mksn_status;
 927
 928         if (status == 0 &&
 929             (reply->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 930                 mksn_rep->mksn_status = EPROTO;
 931                 status = EPROTO;
 932         }
 933
 934         if (status == EPROTO) {
 935                 CNETERR("session protocol error from %s: %u\n",
 936                         libcfs_nid2str(nd->nd_id.nid),
 937                         reply->msg_ses_feats);
 938         }
 939
 940         if (status != 0)
 941                 return status;
 942
 943         if (!trans->tas_feats_updated) {
 944                 trans->tas_feats_updated = 1;
 945                 trans->tas_features = reply->msg_ses_feats;
 946         }
 947
 948         if (reply->msg_ses_feats != trans->tas_features) {
 949                 CNETERR("Framework features %x from %s is different with features on this transaction: %x\n",
 950                          reply->msg_ses_feats, libcfs_nid2str(nd->nd_id.nid),
 951                          trans->tas_features);
 952                 status = mksn_rep->mksn_status = EPROTO;
 953         }
 954
 955         if (status == 0) {
 956                 /* session timeout on remote node */
 957                 nd->nd_timeout = mksn_rep->mksn_timeout;
 958         }
 959
 960         return status;
 961 }
 962
 963 void
 964 lstcon_rpc_stat_reply(lstcon_rpc_trans_t *trans, srpc_msg_t *msg,
 965                       lstcon_node_t *nd, lstcon_trans_stat_t *stat)
 966 {
 967         srpc_rmsn_reply_t  *rmsn_rep;
 968         srpc_debug_reply_t *dbg_rep;
 969         srpc_batch_reply_t *bat_rep;
 970         srpc_test_reply_t  *test_rep;
 971         srpc_stat_reply_t  *stat_rep;
 972         int                rc = 0;
 973
 974         switch (trans->tas_opc) {
 975         case LST_TRANS_SESNEW:
 976                 rc = lstcon_sesnew_stat_reply(trans, nd, msg);
 977                 if (rc == 0) {
 978                         lstcon_sesop_stat_success(stat, 1);
 979                         return;
 980                 }
 981
 982                 lstcon_sesop_stat_failure(stat, 1);
 983                 break;
 984
 985         case LST_TRANS_SESEND:
 986                 rmsn_rep = &msg->msg_body.rmsn_reply;
 987                 /* ESRCH is not an error for end session */
 988                 if (rmsn_rep->rmsn_status == 0 ||
 989                     rmsn_rep->rmsn_status == ESRCH) {
 990                         lstcon_sesop_stat_success(stat, 1);
 991                         return;
 992                 }
 993
 994                 lstcon_sesop_stat_failure(stat, 1);
 995                 rc = rmsn_rep->rmsn_status;
 996                 break;
 997
 998         case LST_TRANS_SESQRY:
 999         case LST_TRANS_SESPING:
1000                 dbg_rep = &msg->msg_body.dbg_reply;
1001
1002                 if (dbg_rep->dbg_status == ESRCH) {
1003                         lstcon_sesqry_stat_unknown(stat, 1);
1004                         return;
1005                 }
1006
1007                 if (lstcon_session_match(dbg_rep->dbg_sid))
1008                         lstcon_sesqry_stat_active(stat, 1);
1009                 else
1010                         lstcon_sesqry_stat_busy(stat, 1);
1011                 return;
1012
1013         case LST_TRANS_TSBRUN:
1014         case LST_TRANS_TSBSTOP:
1015                 bat_rep = &msg->msg_body.bat_reply;
1016
1017                 if (bat_rep->bar_status == 0) {
1018                         lstcon_tsbop_stat_success(stat, 1);
1019                         return;
1020                 }
1021
1022                 if (bat_rep->bar_status == EPERM &&
1023                     trans->tas_opc == LST_TRANS_TSBSTOP) {
1024                         lstcon_tsbop_stat_success(stat, 1);
1025                         return;
1026                 }
1027
1028                 lstcon_tsbop_stat_failure(stat, 1);
1029                 rc = bat_rep->bar_status;
1030                 break;
1031
1032         case LST_TRANS_TSBCLIQRY:
1033         case LST_TRANS_TSBSRVQRY:
1034                 bat_rep = &msg->msg_body.bat_reply;
1035
1036                 if (bat_rep->bar_active != 0)
1037                         lstcon_tsbqry_stat_run(stat, 1);
1038                 else
1039                         lstcon_tsbqry_stat_idle(stat, 1);
1040
1041                 if (bat_rep->bar_status == 0)
1042                         return;
1043
1044                 lstcon_tsbqry_stat_failure(stat, 1);
1045                 rc = bat_rep->bar_status;
1046                 break;
1047
1048         case LST_TRANS_TSBCLIADD:
1049         case LST_TRANS_TSBSRVADD:
1050                 test_rep = &msg->msg_body.tes_reply;
1051
1052                 if (test_rep->tsr_status == 0) {
1053                         lstcon_tsbop_stat_success(stat, 1);
1054                         return;
1055                 }
1056
1057                 lstcon_tsbop_stat_failure(stat, 1);
1058                 rc = test_rep->tsr_status;
1059                 break;
1060
1061         case LST_TRANS_STATQRY:
1062                 stat_rep = &msg->msg_body.stat_reply;
1063
1064                 if (stat_rep->str_status == 0) {
1065                         lstcon_statqry_stat_success(stat, 1);
1066                         return;
1067                 }
1068
1069                 lstcon_statqry_stat_failure(stat, 1);
1070                 rc = stat_rep->str_status;
1071                 break;
1072
1073         default:
1074                 LBUG();
1075         }
1076
1077         if (stat->trs_fwk_errno == 0)
1078                 stat->trs_fwk_errno = rc;
1079
1080         return;
1081 }
1082
1083 int
1084 lstcon_rpc_trans_ndlist(struct list_head *ndlist,
1085                         struct list_head *translist, int transop,
1086                         void *arg, lstcon_rpc_cond_func_t condition,
1087                         lstcon_rpc_trans_t **transpp)
1088 {
1089         lstcon_rpc_trans_t *trans;
1090         lstcon_ndlink_t *ndl;
1091         lstcon_node_t *nd;
1092         lstcon_rpc_t *rpc;
1093         unsigned feats;
1094         int rc;
1095
1096         /* Creating session RPG for list of nodes */
1097
1098         rc = lstcon_rpc_trans_prep(translist, transop, &trans);
1099         if (rc != 0) {
1100                 CERROR("Can't create transaction %d: %d\n", transop, rc);
1101                 return rc;
1102         }
1103
1104         feats = trans->tas_features;
1105         list_for_each_entry(ndl, ndlist, ndl_link) {
1106                 rc = condition == NULL ? 1 :
1107                      condition(transop, ndl->ndl_node, arg);
1108
1109                 if (rc == 0)
1110                         continue;
1111
1112                 if (rc < 0) {
1113                         CDEBUG(D_NET, "Condition error while creating RPC for transaction %d: %d\n",
1114                                         transop, rc);
1115                         break;
1116                 }
1117
1118                 nd = ndl->ndl_node;
1119
1120                 switch (transop) {
1121                 case LST_TRANS_SESNEW:
1122                 case LST_TRANS_SESEND:
1123                         rc = lstcon_sesrpc_prep(nd, transop, feats, &rpc);
1124                         break;
1125                 case LST_TRANS_SESQRY:
1126                 case LST_TRANS_SESPING:
1127                         rc = lstcon_dbgrpc_prep(nd, feats, &rpc);
1128                         break;
1129                 case LST_TRANS_TSBCLIADD:
1130                 case LST_TRANS_TSBSRVADD:
1131                         rc = lstcon_testrpc_prep(nd, transop, feats,
1132                                                  (lstcon_test_t *)arg, &rpc);
1133                         break;
1134                 case LST_TRANS_TSBRUN:
1135                 case LST_TRANS_TSBSTOP:
1136                 case LST_TRANS_TSBCLIQRY:
1137                 case LST_TRANS_TSBSRVQRY:
1138                         rc = lstcon_batrpc_prep(nd, transop, feats,
1139                                                 (lstcon_tsb_hdr_t *)arg, &rpc);
1140                         break;
1141                 case LST_TRANS_STATQRY:
1142                         rc = lstcon_statrpc_prep(nd, feats, &rpc);
1143                         break;
1144                 default:
1145                         rc = -EINVAL;
1146                         break;
1147                 }
1148
1149                 if (rc != 0) {
1150                         CERROR("Failed to create RPC for transaction %s: %d\n",
1151                                lstcon_rpc_trans_name(transop), rc);
1152                         break;
1153                 }
1154
1155                 lstcon_rpc_trans_addreq(trans, rpc);
1156         }
1157
1158         if (rc == 0) {
1159                 *transpp = trans;
1160                 return 0;
1161         }
1162
1163         lstcon_rpc_trans_destroy(trans);
1164
1165         return rc;
1166 }
1167
1168 static void
1169 lstcon_rpc_pinger(void *arg)
1170 {
1171         stt_timer_t *ptimer = (stt_timer_t *)arg;
1172         lstcon_rpc_trans_t *trans;
1173         lstcon_rpc_t *crpc;
1174         srpc_msg_t *rep;
1175         srpc_debug_reqst_t *drq;
1176         lstcon_ndlink_t *ndl;
1177         lstcon_node_t *nd;
1178         int intv;
1179         int count = 0;
1180         int rc;
1181
1182         /* RPC pinger is a special case of transaction,
1183          * it's called by timer at 8 seconds interval.
1184          */
1185         mutex_lock(&console_session.ses_mutex);
1186
1187         if (console_session.ses_shutdown || console_session.ses_expired) {
1188                 mutex_unlock(&console_session.ses_mutex);
1189                 return;
1190         }
1191
1192         if (!console_session.ses_expired &&
1193             ktime_get_real_seconds() - console_session.ses_laststamp >
1194             (time64_t)console_session.ses_timeout)
1195                 console_session.ses_expired = 1;
1196
1197         trans = console_session.ses_ping;
1198
1199         LASSERT(trans != NULL);
1200
1201         list_for_each_entry(ndl, &console_session.ses_ndl_list, ndl_link) {
1202                 nd = ndl->ndl_node;
1203
1204                 if (console_session.ses_expired) {
1205                         /* idle console, end session on all nodes */
1206                         if (nd->nd_state != LST_NODE_ACTIVE)
1207                                 continue;
1208
1209                         rc = lstcon_sesrpc_prep(nd, LST_TRANS_SESEND,
1210                                                 trans->tas_features, &crpc);
1211                         if (rc != 0) {
1212                                 CERROR("Out of memory\n");
1213                                 break;
1214                         }
1215
1216                         lstcon_rpc_trans_addreq(trans, crpc);
1217                         lstcon_rpc_post(crpc);
1218
1219                         continue;
1220                 }
1221
1222                 crpc = &nd->nd_ping;
1223
1224                 if (crpc->crp_rpc != NULL) {
1225                         LASSERT(crpc->crp_trans == trans);
1226                         LASSERT(!list_empty(&crpc->crp_link));
1227
1228                         spin_lock(&crpc->crp_rpc->crpc_lock);
1229
1230                         LASSERT(crpc->crp_posted);
1231
1232                         if (!crpc->crp_finished) {
1233                                 /* in flight */
1234                                 spin_unlock(&crpc->crp_rpc->crpc_lock);
1235                                 continue;
1236                         }
1237
1238                         spin_unlock(&crpc->crp_rpc->crpc_lock);
1239
1240                         lstcon_rpc_get_reply(crpc, &rep);
1241
1242                         list_del_init(&crpc->crp_link);
1243
1244                         lstcon_rpc_put(crpc);
1245                 }
1246
1247                 if (nd->nd_state != LST_NODE_ACTIVE)
1248                         continue;
1249
1250                 intv = (jiffies - nd->nd_stamp) / HZ;
1251                 if (intv < nd->nd_timeout / 2)
1252                         continue;
1253
1254                 rc = lstcon_rpc_init(nd, SRPC_SERVICE_DEBUG,
1255                                      trans->tas_features, 0, 0, 1, crpc);
1256                 if (rc != 0) {
1257                         CERROR("Out of memory\n");
1258                         break;
1259                 }
1260
1261                 drq = &crpc->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
1262
1263                 drq->dbg_sid   = console_session.ses_id;
1264                 drq->dbg_flags = 0;
1265
1266                 lstcon_rpc_trans_addreq(trans, crpc);
1267                 lstcon_rpc_post(crpc);
1268
1269                 count++;
1270         }
1271
1272         if (console_session.ses_expired) {
1273                 mutex_unlock(&console_session.ses_mutex);
1274                 return;
1275         }
1276
1277         CDEBUG(D_NET, "Ping %d nodes in session\n", count);
1278
1279         ptimer->stt_expires = ktime_get_real_seconds() + LST_PING_INTERVAL;
1280         stt_add_timer(ptimer);
1281
1282         mutex_unlock(&console_session.ses_mutex);
1283 }
1284
1285 int
1286 lstcon_rpc_pinger_start(void)
1287 {
1288         stt_timer_t *ptimer;
1289         int rc;
1290
1291         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1292         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1293
1294         rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1295                                    &console_session.ses_ping);
1296         if (rc != 0) {
1297                 CERROR("Failed to create console pinger\n");
1298                 return rc;
1299         }
1300
1301         ptimer = &console_session.ses_ping_timer;
1302         ptimer->stt_expires = ktime_get_real_seconds() + LST_PING_INTERVAL;
1303
1304         stt_add_timer(ptimer);
1305
1306         return 0;
1307 }
1308
1309 void
1310 lstcon_rpc_pinger_stop(void)
1311 {
1312         LASSERT(console_session.ses_shutdown);
1313
1314         stt_del_timer(&console_session.ses_ping_timer);
1315
1316         lstcon_rpc_trans_abort(console_session.ses_ping, -ESHUTDOWN);
1317         lstcon_rpc_trans_stat(console_session.ses_ping, lstcon_trans_stat());
1318         lstcon_rpc_trans_destroy(console_session.ses_ping);
1319
1320         memset(lstcon_trans_stat(), 0, sizeof(lstcon_trans_stat_t));
1321
1322         console_session.ses_ping = NULL;
1323 }
1324
1325 void
1326 lstcon_rpc_cleanup_wait(void)
1327 {
1328         lstcon_rpc_trans_t *trans;
1329         lstcon_rpc_t *crpc;
1330         struct list_head *pacer;
1331         struct list_head zlist;
1332
1333         /* Called with hold of global mutex */
1334
1335         LASSERT(console_session.ses_shutdown);
1336
1337         while (!list_empty(&console_session.ses_trans_list)) {
1338                 list_for_each(pacer, &console_session.ses_trans_list) {
1339                         trans = list_entry(pacer, lstcon_rpc_trans_t,
1340                                                tas_link);
1341
1342                         CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1343                                lstcon_rpc_trans_name(trans->tas_opc));
1344
1345                         wake_up(&trans->tas_waitq);
1346                 }
1347
1348                 mutex_unlock(&console_session.ses_mutex);
1349
1350                 CWARN("Session is shutting down, waiting for termination of transactions\n");
1351                 set_current_state(TASK_UNINTERRUPTIBLE);
1352                 schedule_timeout(cfs_time_seconds(1));
1353
1354                 mutex_lock(&console_session.ses_mutex);
1355         }
1356
1357         spin_lock(&console_session.ses_rpc_lock);
1358
1359         lst_wait_until((atomic_read(&console_session.ses_rpc_counter) == 0),
1360                        console_session.ses_rpc_lock,
1361                        "Network is not accessible or target is down, waiting for %d console RPCs to being recycled\n",
1362                        atomic_read(&console_session.ses_rpc_counter));
1363
1364         list_add(&zlist, &console_session.ses_rpc_freelist);
1365         list_del_init(&console_session.ses_rpc_freelist);
1366
1367         spin_unlock(&console_session.ses_rpc_lock);
1368
1369         while (!list_empty(&zlist)) {
1370                 crpc = list_entry(zlist.next, lstcon_rpc_t, crp_link);
1371
1372                 list_del(&crpc->crp_link);
1373                 LIBCFS_FREE(crpc, sizeof(lstcon_rpc_t));
1374         }
1375 }
1376
1377 int
1378 lstcon_rpc_module_init(void)
1379 {
1380         INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1381         console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1382         console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1383
1384         console_session.ses_ping = NULL;
1385
1386         spin_lock_init(&console_session.ses_rpc_lock);
1387         atomic_set(&console_session.ses_rpc_counter, 0);
1388         INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1389
1390         return 0;
1391 }
1392
1393 void
1394 lstcon_rpc_module_fini(void)
1395 {
1396         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1397         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1398 }