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