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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2016, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lnet/selftest/conctl.c
  33  *
  34  * Console framework rpcs
  35  *
  36  * Author: Liang Zhen <liang@whamcloud.com>
  37  */
  38
  39
  40 #include <libcfs/libcfs.h>
  41 #include <lnet/lib-lnet.h>
  42 #include "timer.h"
  43 #include "conrpc.h"
  44 #include "console.h"
  45
  46 void lstcon_rpc_stat_reply(struct lstcon_rpc_trans *, struct srpc_msg *,
  47                            struct lstcon_node *, struct lstcon_trans_stat *);
  48
  49 static void
  50 lstcon_rpc_done(struct srpc_client_rpc *rpc)
  51 {
  52         struct lstcon_rpc *crpc = rpc->crpc_priv;
  53
  54         LASSERT(crpc != NULL && rpc == crpc->crp_rpc);
  55         LASSERT(crpc->crp_posted && !crpc->crp_finished);
  56
  57         spin_lock(&rpc->crpc_lock);
  58
  59         if (crpc->crp_trans == NULL) {
  60                 /* Orphan RPC is not in any transaction,
  61                  * I'm just a poor body and nobody loves me */
  62                 spin_unlock(&rpc->crpc_lock);
  63
  64                 /* release it */
  65                 lstcon_rpc_put(crpc);
  66                 return;
  67         }
  68
  69         /* not an orphan RPC */
  70         crpc->crp_finished = 1;
  71
  72         if (crpc->crp_stamp == 0) {
  73                 /* not aborted */
  74                 LASSERT (crpc->crp_status == 0);
  75
  76                 crpc->crp_stamp  = cfs_time_current();
  77                 crpc->crp_status = rpc->crpc_status;
  78         }
  79
  80         /* wakeup (transaction)thread if I'm the last RPC in the transaction */
  81         if (atomic_dec_and_test(&crpc->crp_trans->tas_remaining))
  82                 wake_up(&crpc->crp_trans->tas_waitq);
  83
  84         spin_unlock(&rpc->crpc_lock);
  85 }
  86
  87 static int
  88 lstcon_rpc_init(struct lstcon_node *nd, int service, unsigned int feats,
  89                 int bulk_npg, int bulk_len, int embedded,
  90                 struct lstcon_rpc *crpc)
  91 {
  92         crpc->crp_rpc = sfw_create_rpc(nd->nd_id, service,
  93                                        feats, bulk_npg, bulk_len,
  94                                        lstcon_rpc_done, (void *)crpc);
  95         if (crpc->crp_rpc == NULL)
  96                 return -ENOMEM;
  97
  98         crpc->crp_trans    = NULL;
  99         crpc->crp_node     = nd;
 100         crpc->crp_posted   = 0;
 101         crpc->crp_finished = 0;
 102         crpc->crp_unpacked = 0;
 103         crpc->crp_status   = 0;
 104         crpc->crp_stamp    = 0;
 105         crpc->crp_embedded = embedded;
 106         INIT_LIST_HEAD(&crpc->crp_link);
 107
 108         atomic_inc(&console_session.ses_rpc_counter);
 109
 110         return 0;
 111 }
 112
 113 static int
 114 lstcon_rpc_prep(struct lstcon_node *nd, int service, unsigned int feats,
 115                 int bulk_npg, int bulk_len, struct lstcon_rpc **crpcpp)
 116 {
 117         struct lstcon_rpc *crpc = NULL;
 118         int rc;
 119
 120         spin_lock(&console_session.ses_rpc_lock);
 121
 122         if (!list_empty(&console_session.ses_rpc_freelist)) {
 123                 crpc = list_entry(console_session.ses_rpc_freelist.next,
 124                                   struct lstcon_rpc, crp_link);
 125                 list_del_init(&crpc->crp_link);
 126         }
 127
 128         spin_unlock(&console_session.ses_rpc_lock);
 129
 130         if (crpc == NULL) {
 131                 LIBCFS_ALLOC(crpc, sizeof(*crpc));
 132                 if (crpc == NULL)
 133                         return -ENOMEM;
 134         }
 135
 136         rc = lstcon_rpc_init(nd, service, feats, bulk_npg, bulk_len, 0, crpc);
 137         if (rc == 0) {
 138                 *crpcpp = crpc;
 139                 return 0;
 140         }
 141
 142         LIBCFS_FREE(crpc, sizeof(*crpc));
 143
 144         return rc;
 145 }
 146
 147 void
 148 lstcon_rpc_put(struct lstcon_rpc *crpc)
 149 {
 150         struct srpc_bulk *bulk = &crpc->crp_rpc->crpc_bulk;
 151         int i;
 152
 153         LASSERT(list_empty(&crpc->crp_link));
 154
 155         for (i = 0; i < bulk->bk_niov; i++) {
 156                 if (bulk->bk_iovs[i].kiov_page == NULL)
 157                         continue;
 158
 159                 __free_page(bulk->bk_iovs[i].kiov_page);
 160         }
 161
 162         srpc_client_rpc_decref(crpc->crp_rpc);
 163
 164         if (crpc->crp_embedded) {
 165                 /* embedded RPC, don't recycle it */
 166                 memset(crpc, 0, sizeof(*crpc));
 167                 crpc->crp_embedded = 1;
 168
 169         } else {
 170                 spin_lock(&console_session.ses_rpc_lock);
 171
 172                 list_add(&crpc->crp_link,
 173                          &console_session.ses_rpc_freelist);
 174
 175                 spin_unlock(&console_session.ses_rpc_lock);
 176         }
 177
 178         /* RPC is not alive now */
 179         atomic_dec(&console_session.ses_rpc_counter);
 180 }
 181
 182 static void
 183 lstcon_rpc_post(struct lstcon_rpc *crpc)
 184 {
 185         struct lstcon_rpc_trans *trans = crpc->crp_trans;
 186
 187         LASSERT (trans != NULL);
 188
 189         atomic_inc(&trans->tas_remaining);
 190         crpc->crp_posted = 1;
 191
 192         sfw_post_rpc(crpc->crp_rpc);
 193 }
 194
 195 static char *
 196 lstcon_rpc_trans_name(int transop)
 197 {
 198         if (transop == LST_TRANS_SESNEW)
 199                 return "SESNEW";
 200
 201         if (transop == LST_TRANS_SESEND)
 202                 return "SESEND";
 203
 204         if (transop == LST_TRANS_SESQRY)
 205                 return "SESQRY";
 206
 207         if (transop == LST_TRANS_SESPING)
 208                 return "SESPING";
 209
 210         if (transop == LST_TRANS_TSBCLIADD)
 211                 return "TSBCLIADD";
 212
 213         if (transop == LST_TRANS_TSBSRVADD)
 214                 return "TSBSRVADD";
 215
 216         if (transop == LST_TRANS_TSBRUN)
 217                 return "TSBRUN";
 218
 219         if (transop == LST_TRANS_TSBSTOP)
 220                 return "TSBSTOP";
 221
 222         if (transop == LST_TRANS_TSBCLIQRY)
 223                 return "TSBCLIQRY";
 224
 225         if (transop == LST_TRANS_TSBSRVQRY)
 226                 return "TSBSRVQRY";
 227
 228         if (transop == LST_TRANS_STATQRY)
 229                 return "STATQRY";
 230
 231         return "Unknown";
 232 }
 233
 234 int
 235 lstcon_rpc_trans_prep(struct list_head *translist, int transop,
 236                       struct lstcon_rpc_trans **transpp)
 237 {
 238         struct lstcon_rpc_trans *trans;
 239
 240         if (translist != NULL) {
 241                 list_for_each_entry(trans, translist, tas_link) {
 242                         /* Can't enqueue two private transaction on
 243                          * the same object */
 244                         if ((trans->tas_opc & transop) == LST_TRANS_PRIVATE)
 245                                 return -EPERM;
 246                 }
 247         }
 248
 249         /* create a trans group */
 250         LIBCFS_ALLOC(trans, sizeof(*trans));
 251         if (trans == NULL)
 252                 return -ENOMEM;
 253
 254         trans->tas_opc = transop;
 255
 256         if (translist == NULL)
 257                 INIT_LIST_HEAD(&trans->tas_olink);
 258         else
 259                 list_add_tail(&trans->tas_olink, translist);
 260
 261         list_add_tail(&trans->tas_link, &console_session.ses_trans_list);
 262
 263         INIT_LIST_HEAD(&trans->tas_rpcs_list);
 264         atomic_set(&trans->tas_remaining, 0);
 265         init_waitqueue_head(&trans->tas_waitq);
 266
 267         spin_lock(&console_session.ses_rpc_lock);
 268         trans->tas_features = console_session.ses_features;
 269         spin_unlock(&console_session.ses_rpc_lock);
 270
 271         *transpp = trans;
 272         return 0;
 273 }
 274
 275 void
 276 lstcon_rpc_trans_addreq(struct lstcon_rpc_trans *trans, struct lstcon_rpc *crpc)
 277 {
 278         list_add_tail(&crpc->crp_link, &trans->tas_rpcs_list);
 279         crpc->crp_trans = trans;
 280 }
 281
 282 void
 283 lstcon_rpc_trans_abort(struct lstcon_rpc_trans *trans, int error)
 284 {
 285         struct srpc_client_rpc *rpc;
 286         struct lstcon_rpc *crpc;
 287         struct lstcon_node *nd;
 288
 289         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 290                 rpc = crpc->crp_rpc;
 291
 292                 spin_lock(&rpc->crpc_lock);
 293
 294                 if (!crpc->crp_posted || /* not posted */
 295                     crpc->crp_stamp != 0) { /* rpc done or aborted already */
 296                         if (crpc->crp_stamp == 0) {
 297                                 crpc->crp_stamp = cfs_time_current();
 298                                 crpc->crp_status = -EINTR;
 299                         }
 300                         spin_unlock(&rpc->crpc_lock);
 301                         continue;
 302                 }
 303
 304                 crpc->crp_stamp  = cfs_time_current();
 305                 crpc->crp_status = error;
 306
 307                 spin_unlock(&rpc->crpc_lock);
 308
 309                 sfw_abort_rpc(rpc);
 310
 311                 if (error != -ETIMEDOUT)
 312                         continue;
 313
 314                 nd = crpc->crp_node;
 315                 if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 316                         continue;
 317
 318                 nd->nd_stamp = crpc->crp_stamp;
 319                 nd->nd_state = LST_NODE_DOWN;
 320         }
 321 }
 322
 323 static int
 324 lstcon_rpc_trans_check(struct lstcon_rpc_trans *trans)
 325 {
 326         if (console_session.ses_shutdown &&
 327             !list_empty(&trans->tas_olink)) /* Not an end session RPC */
 328                 return 1;
 329
 330         return (atomic_read(&trans->tas_remaining) == 0) ? 1: 0;
 331 }
 332
 333 int
 334 lstcon_rpc_trans_postwait(struct lstcon_rpc_trans *trans, int timeout)
 335 {
 336         struct lstcon_rpc *crpc;
 337         int rc;
 338
 339         if (list_empty(&trans->tas_rpcs_list))
 340                 return 0;
 341
 342         if (timeout < LST_TRANS_MIN_TIMEOUT)
 343                 timeout = LST_TRANS_MIN_TIMEOUT;
 344
 345         CDEBUG(D_NET, "Transaction %s started\n",
 346         lstcon_rpc_trans_name(trans->tas_opc));
 347
 348         /* post all requests */
 349         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 350                 LASSERT(!crpc->crp_posted);
 351
 352                 lstcon_rpc_post(crpc);
 353         }
 354
 355         mutex_unlock(&console_session.ses_mutex);
 356
 357         rc = wait_event_interruptible_timeout(trans->tas_waitq,
 358                                               lstcon_rpc_trans_check(trans),
 359                                               cfs_time_seconds(timeout));
 360
 361         rc = (rc > 0)? 0: ((rc < 0)? -EINTR: -ETIMEDOUT);
 362
 363         mutex_lock(&console_session.ses_mutex);
 364
 365         if (console_session.ses_shutdown)
 366                 rc = -ESHUTDOWN;
 367
 368         if (rc != 0 || atomic_read(&trans->tas_remaining) != 0) {
 369                 /* treat short timeout as canceled */
 370                 if (rc == -ETIMEDOUT && timeout < LST_TRANS_MIN_TIMEOUT * 2)
 371                         rc = -EINTR;
 372
 373                 lstcon_rpc_trans_abort(trans, rc);
 374         }
 375
 376         CDEBUG(D_NET, "Transaction %s stopped: %d\n",
 377                lstcon_rpc_trans_name(trans->tas_opc), rc);
 378
 379         lstcon_rpc_trans_stat(trans, lstcon_trans_stat());
 380
 381         return rc;
 382 }
 383
 384 static int
 385 lstcon_rpc_get_reply(struct lstcon_rpc *crpc, struct srpc_msg **msgpp)
 386 {
 387         struct lstcon_node *nd = crpc->crp_node;
 388         struct srpc_client_rpc *rpc = crpc->crp_rpc;
 389         struct srpc_generic_reply *rep;
 390
 391         LASSERT (nd != NULL && rpc != NULL);
 392         LASSERT (crpc->crp_stamp != 0);
 393
 394         if (crpc->crp_status != 0) {
 395                 *msgpp = NULL;
 396                 return crpc->crp_status;
 397         }
 398
 399         *msgpp = &rpc->crpc_replymsg;
 400         if (!crpc->crp_unpacked) {
 401                 sfw_unpack_message(*msgpp);
 402                 crpc->crp_unpacked = 1;
 403         }
 404
 405         if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 406                 return 0;
 407
 408         nd->nd_stamp = crpc->crp_stamp;
 409         rep = &(*msgpp)->msg_body.reply;
 410
 411         if (rep->sid.ses_nid == LNET_NID_ANY)
 412                 nd->nd_state = LST_NODE_UNKNOWN;
 413         else if (lstcon_session_match(rep->sid))
 414                 nd->nd_state = LST_NODE_ACTIVE;
 415         else
 416                 nd->nd_state = LST_NODE_BUSY;
 417
 418         return 0;
 419 }
 420
 421 void
 422 lstcon_rpc_trans_stat(struct lstcon_rpc_trans *trans,
 423                       struct lstcon_trans_stat *stat)
 424 {
 425         struct lstcon_rpc *crpc;
 426         struct srpc_msg *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, "
 458                       "RPC error(%d), Framework error(%d)\n",
 459                lstcon_rpc_trans_name(trans->tas_opc),
 460                lstcon_rpc_stat_success(stat, 0),
 461                lstcon_rpc_stat_failure(stat, 0),
 462                lstcon_rpc_stat_total(stat, 0),
 463                stat->trs_rpc_errno, stat->trs_fwk_errno);
 464
 465         return;
 466 }
 467
 468 int
 469 lstcon_rpc_trans_interpreter(struct lstcon_rpc_trans *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         struct lstcon_rpc_ent *ent;
 476         struct srpc_generic_reply *rep;
 477         struct lstcon_rpc *crpc;
 478         struct srpc_msg *msg;
 479         struct lstcon_node *nd;
 480         cfs_duration_t dur;
 481         struct timeval tv;
 482         int error;
 483
 484         LASSERT(head_up != NULL);
 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, struct lstcon_rpc_ent, rpe_link);
 499
 500                 LASSERT(crpc->crp_stamp != 0);
 501
 502                 error = lstcon_rpc_get_reply(crpc, &msg);
 503
 504                 nd = crpc->crp_node;
 505
 506                 dur = (cfs_duration_t)cfs_time_sub(crpc->crp_stamp,
 507                       (cfs_time_t)console_session.ses_id.ses_stamp);
 508                 jiffies_to_timeval(dur, &tv);
 509
 510                 if (copy_to_user(&ent->rpe_peer,
 511                                  &nd->nd_id, sizeof(struct lnet_process_id)) ||
 512                     copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
 513                     copy_to_user(&ent->rpe_state,
 514                                  &nd->nd_state, sizeof(nd->nd_state)) ||
 515                     copy_to_user(&ent->rpe_rpc_errno, &error,
 516                                      sizeof(error)))
 517                         return -EFAULT;
 518
 519                 if (error != 0)
 520                         continue;
 521
 522                 /* RPC is done */
 523                 rep = (struct srpc_generic_reply *)&msg->msg_body.reply;
 524
 525                 if (copy_to_user(&ent->rpe_sid,
 526                                  &rep->sid, sizeof(rep->sid)) ||
 527                     copy_to_user(&ent->rpe_fwk_errno,
 528                                  &rep->status, sizeof(rep->status)))
 529                         return -EFAULT;
 530
 531                 if (readent == NULL)
 532                         continue;
 533
 534                 error = readent(trans->tas_opc, msg, ent);
 535                 if (error != 0)
 536                         return error;
 537         }
 538
 539         return 0;
 540 }
 541
 542 void
 543 lstcon_rpc_trans_destroy(struct lstcon_rpc_trans *trans)
 544 {
 545         struct srpc_client_rpc *rpc;
 546         struct lstcon_rpc *crpc;
 547         struct lstcon_rpc *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                 /* rpcs can be still not callbacked (even LNetMDUnlink is
 566                  * called) because huge timeout for inaccessible network,
 567                  * don't make user wait for them, just abandon them, they
 568                  * will be recycled in callback */
 569
 570                 LASSERT(crpc->crp_status != 0);
 571
 572                 crpc->crp_node  = NULL;
 573                 crpc->crp_trans = NULL;
 574                 list_del_init(&crpc->crp_link);
 575                 count++;
 576
 577                 spin_unlock(&rpc->crpc_lock);
 578
 579                 atomic_dec(&trans->tas_remaining);
 580         }
 581
 582         LASSERT(atomic_read(&trans->tas_remaining) == 0);
 583
 584         list_del(&trans->tas_link);
 585         if (!list_empty(&trans->tas_olink))
 586                 list_del(&trans->tas_olink);
 587
 588         CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
 589                lstcon_rpc_trans_name(trans->tas_opc), count);
 590
 591         LIBCFS_FREE(trans, sizeof(*trans));
 592
 593         return;
 594 }
 595
 596 int
 597 lstcon_sesrpc_prep(struct lstcon_node *nd, int transop,
 598                    unsigned int feats, struct lstcon_rpc **crpc)
 599 {
 600         struct srpc_mksn_reqst *msrq;
 601         struct srpc_rmsn_reqst *rsrq;
 602         int rc;
 603
 604         switch (transop) {
 605         case LST_TRANS_SESNEW:
 606                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_MAKE_SESSION,
 607                                      feats, 0, 0, crpc);
 608                 if (rc != 0)
 609                         return rc;
 610
 611                 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 612                 msrq->mksn_sid     = console_session.ses_id;
 613                 msrq->mksn_force   = console_session.ses_force;
 614                 strlcpy(msrq->mksn_name, console_session.ses_name,
 615                         sizeof(msrq->mksn_name));
 616                 break;
 617
 618         case LST_TRANS_SESEND:
 619                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION,
 620                                      feats, 0, 0, crpc);
 621                 if (rc != 0)
 622                         return rc;
 623
 624                 rsrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.rmsn_reqst;
 625                 rsrq->rmsn_sid = console_session.ses_id;
 626                 break;
 627
 628         default:
 629                 LBUG();
 630         }
 631
 632         return 0;
 633 }
 634
 635 int
 636 lstcon_dbgrpc_prep(struct lstcon_node *nd, unsigned int feats,
 637                    struct lstcon_rpc **crpc)
 638 {
 639         struct srpc_debug_reqst *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(struct lstcon_node *nd, int transop, unsigned int feats,
 656                    struct lstcon_tsb_hdr *tsb, struct lstcon_rpc **crpc)
 657 {
 658         struct lstcon_batch *batch;
 659         struct srpc_batch_reqst *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 = (struct lstcon_batch *)tsb;
 682         brq->bar_arg = batch->bat_arg;
 683
 684         return 0;
 685 }
 686
 687 int
 688 lstcon_statrpc_prep(struct lstcon_node *nd, unsigned int feats,
 689                     struct lstcon_rpc **crpc)
 690 {
 691         struct srpc_stat_reqst *srq;
 692         int rc;
 693
 694         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_QUERY_STAT, feats, 0, 0, crpc);
 695         if (rc != 0)
 696                 return rc;
 697
 698         srq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.stat_reqst;
 699
 700         srq->str_sid  = console_session.ses_id;
 701         srq->str_type = 0; /* XXX remove it */
 702
 703         return 0;
 704 }
 705
 706 static struct lnet_process_id_packed *
 707 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
 708 {
 709         struct lnet_process_id_packed *pid;
 710         int                       i;
 711
 712         i = idx / SFW_ID_PER_PAGE;
 713
 714         LASSERT (i < nkiov);
 715
 716         pid = (struct lnet_process_id_packed *)page_address(kiov[i].kiov_page);
 717
 718         return &pid[idx % SFW_ID_PER_PAGE];
 719 }
 720
 721 static int
 722 lstcon_dstnodes_prep(struct lstcon_group *grp, int idx,
 723                      int dist, int span, int nkiov, lnet_kiov_t *kiov)
 724 {
 725         struct lnet_process_id_packed *pid;
 726         struct lstcon_ndlink *ndl;
 727         struct lstcon_node *nd;
 728         int start;
 729         int end;
 730         int i = 0;
 731
 732         LASSERT (dist >= 1);
 733         LASSERT (span >= 1);
 734         LASSERT (grp->grp_nnode >= 1);
 735
 736         if (span > grp->grp_nnode)
 737                 return -EINVAL;
 738
 739         start = ((idx / dist) * span) % grp->grp_nnode;
 740         end   = ((idx / dist) * span + span - 1) % grp->grp_nnode;
 741
 742         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 743                 nd = ndl->ndl_node;
 744                 if (i < start) {
 745                         i++;
 746                         continue;
 747                 }
 748
 749                 if (i > (end >= start ? end : grp->grp_nnode))
 750                         break;
 751
 752                 pid = lstcon_next_id((i - start), nkiov, kiov);
 753                 pid->nid = nd->nd_id.nid;
 754                 pid->pid = nd->nd_id.pid;
 755                 i++;
 756         }
 757
 758         if (start <= end)       /* done */
 759                 return 0;
 760
 761         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 762                 if (i > grp->grp_nnode + end)
 763                         break;
 764
 765                 nd = ndl->ndl_node;
 766                 pid = lstcon_next_id((i - start), nkiov, kiov);
 767                 pid->nid = nd->nd_id.nid;
 768                 pid->pid = nd->nd_id.pid;
 769                 i++;
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int
 776 lstcon_pingrpc_prep(struct lst_test_ping_param *param,
 777                     struct srpc_test_reqst *req)
 778 {
 779         struct test_ping_req *prq = &req->tsr_u.ping;
 780
 781         prq->png_size   = param->png_size;
 782         prq->png_flags  = param->png_flags;
 783         /* TODO dest */
 784         return 0;
 785 }
 786
 787 static int
 788 lstcon_bulkrpc_v0_prep(struct lst_test_bulk_param *param,
 789                        struct srpc_test_reqst *req)
 790 {
 791         struct test_bulk_req *brq = &req->tsr_u.bulk_v0;
 792
 793         brq->blk_opc    = param->blk_opc;
 794         brq->blk_npg    = (param->blk_size + PAGE_SIZE - 1) /
 795                            PAGE_SIZE;
 796         brq->blk_flags  = param->blk_flags;
 797
 798         return 0;
 799 }
 800
 801 static int
 802 lstcon_bulkrpc_v1_prep(struct lst_test_bulk_param *param, bool is_client,
 803                        struct srpc_test_reqst *req)
 804 {
 805         struct test_bulk_req_v1 *brq = &req->tsr_u.bulk_v1;
 806
 807         brq->blk_opc    = param->blk_opc;
 808         brq->blk_flags  = param->blk_flags;
 809         brq->blk_len    = param->blk_size;
 810         brq->blk_offset = is_client ? param->blk_cli_off : param->blk_srv_off;
 811
 812         return 0;
 813 }
 814
 815 int
 816 lstcon_testrpc_prep(struct lstcon_node *nd, int transop, unsigned int feats,
 817                     struct lstcon_test *test, struct lstcon_rpc **crpc)
 818 {
 819         struct lstcon_group *sgrp = test->tes_src_grp;
 820         struct lstcon_group *dgrp = test->tes_dst_grp;
 821         struct srpc_test_reqst *trq;
 822         struct srpc_bulk *bulk;
 823         int i;
 824         int npg = 0;
 825         int nob = 0;
 826         int rc = 0;
 827
 828         if (transop == LST_TRANS_TSBCLIADD) {
 829                 npg = sfw_id_pages(test->tes_span);
 830                 nob = (feats & LST_FEAT_BULK_LEN) == 0 ?
 831                       npg * PAGE_SIZE :
 832                       sizeof(struct lnet_process_id_packed) * test->tes_span;
 833         }
 834
 835         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_TEST, feats, npg, nob, crpc);
 836         if (rc != 0)
 837                 return rc;
 838
 839         trq  = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.tes_reqst;
 840
 841         if (transop == LST_TRANS_TSBSRVADD) {
 842                 int ndist = (sgrp->grp_nnode + test->tes_dist - 1) / test->tes_dist;
 843                 int nspan = (dgrp->grp_nnode + test->tes_span - 1) / test->tes_span;
 844                 int nmax = (ndist + nspan - 1) / nspan;
 845
 846                 trq->tsr_ndest = 0;
 847                 trq->tsr_loop  = nmax * test->tes_dist * test->tes_concur;
 848
 849         } else {
 850                 bulk = &(*crpc)->crp_rpc->crpc_bulk;
 851
 852                 for (i = 0; i < npg; i++) {
 853                         int     len;
 854
 855                         LASSERT(nob > 0);
 856
 857                         len = (feats & LST_FEAT_BULK_LEN) == 0 ?
 858                               PAGE_SIZE : min_t(int, nob, PAGE_SIZE);
 859                         nob -= len;
 860
 861                         bulk->bk_iovs[i].kiov_offset = 0;
 862                         bulk->bk_iovs[i].kiov_len    = len;
 863                         bulk->bk_iovs[i].kiov_page   =
 864                                 alloc_page(GFP_KERNEL);
 865
 866                         if (bulk->bk_iovs[i].kiov_page == NULL) {
 867                                 lstcon_rpc_put(*crpc);
 868                                 return -ENOMEM;
 869                         }
 870                 }
 871
 872                 bulk->bk_sink = 0;
 873
 874                 LASSERT (transop == LST_TRANS_TSBCLIADD);
 875
 876                 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
 877                                           test->tes_cliidx++,
 878                                           test->tes_dist,
 879                                           test->tes_span,
 880                                           npg, &bulk->bk_iovs[0]);
 881                 if (rc != 0) {
 882                         lstcon_rpc_put(*crpc);
 883                         return rc;
 884                 }
 885
 886                 trq->tsr_ndest = test->tes_span;
 887                 trq->tsr_loop  = test->tes_loop;
 888         }
 889
 890         trq->tsr_sid        = console_session.ses_id;
 891         trq->tsr_bid        = test->tes_hdr.tsb_id;
 892         trq->tsr_concur     = test->tes_concur;
 893         trq->tsr_is_client  = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
 894         trq->tsr_stop_onerr = !!test->tes_stop_onerr;
 895
 896         switch (test->tes_type) {
 897         case LST_TEST_PING:
 898                 trq->tsr_service = SRPC_SERVICE_PING;
 899                 rc = lstcon_pingrpc_prep((struct lst_test_ping_param *)
 900                                          &test->tes_param[0], trq);
 901                 break;
 902
 903         case LST_TEST_BULK:
 904                 trq->tsr_service = SRPC_SERVICE_BRW;
 905                 if ((feats & LST_FEAT_BULK_LEN) == 0) {
 906                         rc = lstcon_bulkrpc_v0_prep((struct lst_test_bulk_param *)
 907                                                     &test->tes_param[0], trq);
 908                 } else {
 909                         rc = lstcon_bulkrpc_v1_prep((struct lst_test_bulk_param *)
 910                                                     &test->tes_param[0],
 911                                                     trq->tsr_is_client, trq);
 912                 }
 913
 914                 break;
 915         default:
 916                 LBUG();
 917                 break;
 918         }
 919
 920         return rc;
 921 }
 922
 923 static int
 924 lstcon_sesnew_stat_reply(struct lstcon_rpc_trans *trans,
 925                          struct lstcon_node *nd, struct srpc_msg *reply)
 926 {
 927         struct srpc_mksn_reply *mksn_rep = &reply->msg_body.mksn_reply;
 928         int status = mksn_rep->mksn_status;
 929
 930         if (status == 0 &&
 931             (reply->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 932                 mksn_rep->mksn_status = EPROTO;
 933                 status = EPROTO;
 934         }
 935
 936         if (status == EPROTO) {
 937                 CNETERR("session protocol error from %s: %u\n",
 938                         libcfs_nid2str(nd->nd_id.nid),
 939                         reply->msg_ses_feats);
 940         }
 941
 942         if (status != 0)
 943                 return status;
 944
 945         if (!trans->tas_feats_updated) {
 946                 spin_lock(&console_session.ses_rpc_lock);
 947                 if (!trans->tas_feats_updated) { /* recheck with lock */
 948                         trans->tas_feats_updated = 1;
 949                         trans->tas_features = reply->msg_ses_feats;
 950                 }
 951                 spin_unlock(&console_session.ses_rpc_lock);
 952         }
 953
 954         if (reply->msg_ses_feats != trans->tas_features) {
 955                 CNETERR("Framework features %x from %s is different with "
 956                         "features on this transaction: %x\n",
 957                          reply->msg_ses_feats, libcfs_nid2str(nd->nd_id.nid),
 958                          trans->tas_features);
 959                 status = mksn_rep->mksn_status = EPROTO;
 960         }
 961
 962         if (status == 0) {
 963                 /* session timeout on remote node */
 964                 nd->nd_timeout = mksn_rep->mksn_timeout;
 965         }
 966
 967         return status;
 968 }
 969
 970 void
 971 lstcon_rpc_stat_reply(struct lstcon_rpc_trans *trans, struct srpc_msg *msg,
 972                       struct lstcon_node *nd, struct lstcon_trans_stat *stat)
 973 {
 974         struct srpc_rmsn_reply *rmsn_rep;
 975         struct srpc_debug_reply *dbg_rep;
 976         struct srpc_batch_reply *bat_rep;
 977         struct srpc_test_reply *test_rep;
 978         struct srpc_stat_reply *stat_rep;
 979         int rc = 0;
 980
 981         switch (trans->tas_opc) {
 982         case LST_TRANS_SESNEW:
 983                 rc = lstcon_sesnew_stat_reply(trans, nd, msg);
 984                 if (rc == 0) {
 985                         lstcon_sesop_stat_success(stat, 1);
 986                         return;
 987                 }
 988
 989                 lstcon_sesop_stat_failure(stat, 1);
 990                 break;
 991
 992         case LST_TRANS_SESEND:
 993                 rmsn_rep = &msg->msg_body.rmsn_reply;
 994                 /* ESRCH is not an error for end session */
 995                 if (rmsn_rep->rmsn_status == 0 ||
 996                     rmsn_rep->rmsn_status == ESRCH) {
 997                         lstcon_sesop_stat_success(stat, 1);
 998                         return;
 999                 }
1000
1001                 lstcon_sesop_stat_failure(stat, 1);
1002                 rc = rmsn_rep->rmsn_status;
1003                 break;
1004
1005         case LST_TRANS_SESQRY:
1006         case LST_TRANS_SESPING:
1007                 dbg_rep = &msg->msg_body.dbg_reply;
1008
1009                 if (dbg_rep->dbg_status == ESRCH) {
1010                         lstcon_sesqry_stat_unknown(stat, 1);
1011                         return;
1012                 }
1013
1014                 if (lstcon_session_match(dbg_rep->dbg_sid))
1015                         lstcon_sesqry_stat_active(stat, 1);
1016                 else
1017                         lstcon_sesqry_stat_busy(stat, 1);
1018                 return;
1019
1020         case LST_TRANS_TSBRUN:
1021         case LST_TRANS_TSBSTOP:
1022                 bat_rep = &msg->msg_body.bat_reply;
1023
1024                 if (bat_rep->bar_status == 0) {
1025                         lstcon_tsbop_stat_success(stat, 1);
1026                         return;
1027                 }
1028
1029                 if (bat_rep->bar_status == EPERM &&
1030                     trans->tas_opc == LST_TRANS_TSBSTOP) {
1031                         lstcon_tsbop_stat_success(stat, 1);
1032                         return;
1033                 }
1034
1035                 lstcon_tsbop_stat_failure(stat, 1);
1036                 rc = bat_rep->bar_status;
1037                 break;
1038
1039         case LST_TRANS_TSBCLIQRY:
1040         case LST_TRANS_TSBSRVQRY:
1041                 bat_rep = &msg->msg_body.bat_reply;
1042
1043                 if (bat_rep->bar_active != 0)
1044                         lstcon_tsbqry_stat_run(stat, 1);
1045                 else
1046                         lstcon_tsbqry_stat_idle(stat, 1);
1047
1048                 if (bat_rep->bar_status == 0)
1049                         return;
1050
1051                 lstcon_tsbqry_stat_failure(stat, 1);
1052                 rc = bat_rep->bar_status;
1053                 break;
1054
1055         case LST_TRANS_TSBCLIADD:
1056         case LST_TRANS_TSBSRVADD:
1057                 test_rep = &msg->msg_body.tes_reply;
1058
1059                 if (test_rep->tsr_status == 0) {
1060                         lstcon_tsbop_stat_success(stat, 1);
1061                         return;
1062                 }
1063
1064                 lstcon_tsbop_stat_failure(stat, 1);
1065                 rc = test_rep->tsr_status;
1066                 break;
1067
1068         case LST_TRANS_STATQRY:
1069                 stat_rep = &msg->msg_body.stat_reply;
1070
1071                 if (stat_rep->str_status == 0) {
1072                         lstcon_statqry_stat_success(stat, 1);
1073                         return;
1074                 }
1075
1076                 lstcon_statqry_stat_failure(stat, 1);
1077                 rc = stat_rep->str_status;
1078                 break;
1079
1080         default:
1081                 LBUG();
1082         }
1083
1084         if (stat->trs_fwk_errno == 0)
1085                 stat->trs_fwk_errno = rc;
1086
1087         return;
1088 }
1089
1090 int
1091 lstcon_rpc_trans_ndlist(struct list_head *ndlist,
1092                         struct list_head *translist, int transop,
1093                         void *arg, lstcon_rpc_cond_func_t condition,
1094                         struct lstcon_rpc_trans **transpp)
1095 {
1096         struct lstcon_rpc_trans *trans;
1097         struct lstcon_ndlink *ndl;
1098         struct lstcon_node *nd;
1099         struct lstcon_rpc *rpc;
1100         unsigned int feats;
1101         int rc;
1102
1103         /* Creating session RPG for list of nodes */
1104
1105         rc = lstcon_rpc_trans_prep(translist, transop, &trans);
1106         if (rc != 0) {
1107                 CERROR("Can't create transaction %d: %d\n", transop, rc);
1108                 return rc;
1109         }
1110
1111         feats = trans->tas_features;
1112         list_for_each_entry(ndl, ndlist, ndl_link) {
1113                 rc = condition == NULL ? 1 :
1114                      condition(transop, ndl->ndl_node, arg);
1115
1116                 if (rc == 0)
1117                         continue;
1118
1119                 if (rc < 0) {
1120                         CDEBUG(D_NET, "Condition error while creating RPC "
1121                                       " for transaction %d: %d\n", transop, rc);
1122                         break;
1123                 }
1124
1125                 nd = ndl->ndl_node;
1126
1127                 switch (transop) {
1128                 case LST_TRANS_SESNEW:
1129                 case LST_TRANS_SESEND:
1130                         rc = lstcon_sesrpc_prep(nd, transop, feats, &rpc);
1131                         break;
1132                 case LST_TRANS_SESQRY:
1133                 case LST_TRANS_SESPING:
1134                         rc = lstcon_dbgrpc_prep(nd, feats, &rpc);
1135                         break;
1136                 case LST_TRANS_TSBCLIADD:
1137                 case LST_TRANS_TSBSRVADD:
1138                         rc = lstcon_testrpc_prep(nd, transop, feats,
1139                                                  (struct lstcon_test *)arg,
1140                                                  &rpc);
1141                         break;
1142                 case LST_TRANS_TSBRUN:
1143                 case LST_TRANS_TSBSTOP:
1144                 case LST_TRANS_TSBCLIQRY:
1145                 case LST_TRANS_TSBSRVQRY:
1146                         rc = lstcon_batrpc_prep(nd, transop, feats,
1147                                                 (struct lstcon_tsb_hdr *)arg,
1148                                                 &rpc);
1149                         break;
1150                 case LST_TRANS_STATQRY:
1151                         rc = lstcon_statrpc_prep(nd, feats, &rpc);
1152                         break;
1153                 default:
1154                         rc = -EINVAL;
1155                         break;
1156                 }
1157
1158                 if (rc != 0) {
1159                         CERROR("Failed to create RPC for transaction %s: %d\n",
1160                                lstcon_rpc_trans_name(transop), rc);
1161                         break;
1162                 }
1163
1164                 lstcon_rpc_trans_addreq(trans, rpc);
1165         }
1166
1167         if (rc == 0) {
1168                 *transpp = trans;
1169                 return 0;
1170         }
1171
1172         lstcon_rpc_trans_destroy(trans);
1173
1174         return rc;
1175 }
1176
1177 static void
1178 lstcon_rpc_pinger(void *arg)
1179 {
1180         struct stt_timer *ptimer = arg;
1181         struct lstcon_rpc_trans *trans;
1182         struct lstcon_rpc *crpc;
1183         struct srpc_msg *rep;
1184         struct srpc_debug_reqst *drq;
1185         struct lstcon_ndlink *ndl;
1186         struct lstcon_node *nd;
1187         int intv;
1188         int count = 0;
1189         int rc;
1190
1191         /* RPC pinger is a special case of transaction,
1192          * it's called by timer at 8 seconds interval.
1193          */
1194         mutex_lock(&console_session.ses_mutex);
1195
1196         if (console_session.ses_shutdown || console_session.ses_expired) {
1197                 mutex_unlock(&console_session.ses_mutex);
1198                 return;
1199         }
1200
1201         if (!console_session.ses_expired &&
1202             ktime_get_real_seconds() - console_session.ses_laststamp >
1203             (time64_t)console_session.ses_timeout)
1204                 console_session.ses_expired = 1;
1205
1206         trans = console_session.ses_ping;
1207
1208         LASSERT(trans != NULL);
1209
1210         list_for_each_entry(ndl, &console_session.ses_ndl_list, ndl_link) {
1211                 nd = ndl->ndl_node;
1212
1213                 if (console_session.ses_expired) {
1214                         /* idle console, end session on all nodes */
1215                         if (nd->nd_state != LST_NODE_ACTIVE)
1216                                 continue;
1217
1218                         rc = lstcon_sesrpc_prep(nd, LST_TRANS_SESEND,
1219                                                 trans->tas_features, &crpc);
1220                         if (rc != 0) {
1221                                 CERROR("Out of memory\n");
1222                                 break;
1223                         }
1224
1225                         lstcon_rpc_trans_addreq(trans, crpc);
1226                         lstcon_rpc_post(crpc);
1227
1228                         continue;
1229                 }
1230
1231                 crpc = &nd->nd_ping;
1232
1233                 if (crpc->crp_rpc != NULL) {
1234                         LASSERT(crpc->crp_trans == trans);
1235                         LASSERT(!list_empty(&crpc->crp_link));
1236
1237                         spin_lock(&crpc->crp_rpc->crpc_lock);
1238
1239                         LASSERT(crpc->crp_posted);
1240
1241                         if (!crpc->crp_finished) {
1242                                 /* in flight */
1243                                 spin_unlock(&crpc->crp_rpc->crpc_lock);
1244                                 continue;
1245                         }
1246
1247                         spin_unlock(&crpc->crp_rpc->crpc_lock);
1248
1249                         lstcon_rpc_get_reply(crpc, &rep);
1250
1251                         list_del_init(&crpc->crp_link);
1252
1253                         lstcon_rpc_put(crpc);
1254                 }
1255
1256                 if (nd->nd_state != LST_NODE_ACTIVE)
1257                         continue;
1258
1259                 intv = cfs_duration_sec(jiffies - nd->nd_stamp);
1260                 if (intv < nd->nd_timeout / 2)
1261                         continue;
1262
1263                 rc = lstcon_rpc_init(nd, SRPC_SERVICE_DEBUG,
1264                                      trans->tas_features, 0, 0, 1, crpc);
1265                 if (rc != 0) {
1266                         CERROR("Out of memory\n");
1267                         break;
1268                 }
1269
1270                 drq = &crpc->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
1271
1272                 drq->dbg_sid   = console_session.ses_id;
1273                 drq->dbg_flags = 0;
1274
1275                 lstcon_rpc_trans_addreq(trans, crpc);
1276                 lstcon_rpc_post(crpc);
1277
1278                 count++;
1279         }
1280
1281         if (console_session.ses_expired) {
1282                 mutex_unlock(&console_session.ses_mutex);
1283                 return;
1284         }
1285
1286         CDEBUG(D_NET, "Ping %d nodes in session\n", count);
1287
1288         ptimer->stt_expires = ktime_get_real_seconds() + LST_PING_INTERVAL;
1289         stt_add_timer(ptimer);
1290
1291         mutex_unlock(&console_session.ses_mutex);
1292 }
1293
1294 int
1295 lstcon_rpc_pinger_start(void)
1296 {
1297         struct stt_timer *ptimer;
1298         int rc;
1299
1300         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1301         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1302
1303         rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1304                                    &console_session.ses_ping);
1305         if (rc != 0) {
1306                 CERROR("Failed to create console pinger\n");
1307                 return rc;
1308         }
1309
1310         ptimer = &console_session.ses_ping_timer;
1311         ptimer->stt_expires = ktime_get_real_seconds() + LST_PING_INTERVAL;
1312
1313         stt_add_timer(ptimer);
1314
1315         return 0;
1316 }
1317
1318 void
1319 lstcon_rpc_pinger_stop(void)
1320 {
1321         LASSERT (console_session.ses_shutdown);
1322
1323         stt_del_timer(&console_session.ses_ping_timer);
1324
1325         lstcon_rpc_trans_abort(console_session.ses_ping, -ESHUTDOWN);
1326         lstcon_rpc_trans_stat(console_session.ses_ping, lstcon_trans_stat());
1327         lstcon_rpc_trans_destroy(console_session.ses_ping);
1328
1329         memset(lstcon_trans_stat(), 0, sizeof(struct lstcon_trans_stat));
1330
1331         console_session.ses_ping = NULL;
1332 }
1333
1334 void
1335 lstcon_rpc_cleanup_wait(void)
1336 {
1337         struct lstcon_rpc_trans *trans;
1338         struct lstcon_rpc *crpc;
1339         struct list_head *pacer;
1340         struct list_head zlist;
1341
1342         /* Called with hold of global mutex */
1343
1344         LASSERT(console_session.ses_shutdown);
1345
1346         while (!list_empty(&console_session.ses_trans_list)) {
1347                 list_for_each(pacer, &console_session.ses_trans_list) {
1348                         trans = list_entry(pacer, struct lstcon_rpc_trans,
1349                                            tas_link);
1350
1351                         CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1352                                lstcon_rpc_trans_name(trans->tas_opc));
1353
1354                         wake_up(&trans->tas_waitq);
1355                 }
1356
1357                 mutex_unlock(&console_session.ses_mutex);
1358
1359                 CWARN("Session is shutting down, "
1360                       "waiting for termination of transactions\n");
1361                 set_current_state(TASK_UNINTERRUPTIBLE);
1362                 schedule_timeout(cfs_time_seconds(1));
1363
1364                 mutex_lock(&console_session.ses_mutex);
1365         }
1366
1367         spin_lock(&console_session.ses_rpc_lock);
1368
1369         lst_wait_until((atomic_read(&console_session.ses_rpc_counter) == 0),
1370                        console_session.ses_rpc_lock,
1371                        "Network is not accessable or target is down, "
1372                        "waiting for %d console RPCs to being recycled\n",
1373                        atomic_read(&console_session.ses_rpc_counter));
1374
1375         list_add(&zlist, &console_session.ses_rpc_freelist);
1376         list_del_init(&console_session.ses_rpc_freelist);
1377
1378         spin_unlock(&console_session.ses_rpc_lock);
1379
1380         while (!list_empty(&zlist)) {
1381                 crpc = list_entry(zlist.next, struct lstcon_rpc, crp_link);
1382
1383                 list_del(&crpc->crp_link);
1384                 LIBCFS_FREE(crpc, sizeof(*crpc));
1385         }
1386 }
1387
1388 int
1389 lstcon_rpc_module_init(void)
1390 {
1391         INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1392         console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1393         console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1394
1395         console_session.ses_ping = NULL;
1396
1397         spin_lock_init(&console_session.ses_rpc_lock);
1398         atomic_set(&console_session.ses_rpc_counter, 0);
1399         INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1400
1401         return 0;
1402 }
1403
1404 void
1405 lstcon_rpc_module_fini(void)
1406 {
1407         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1408         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1409 }
1410