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(lstcon_rpc_trans_t *, srpc_msg_t *,
  47                            lstcon_node_t *, struct lstcon_trans_stat *);
  48
  49 static void
  50 lstcon_rpc_done(srpc_client_rpc_t *rpc)
  51 {
  52         lstcon_rpc_t *crpc = (lstcon_rpc_t *)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(lstcon_node_t *nd, int service, unsigned feats,
  89                 int bulk_npg, int bulk_len, int embedded, lstcon_rpc_t *crpc)
  90 {
  91         crpc->crp_rpc = sfw_create_rpc(nd->nd_id, service,
  92                                        feats, bulk_npg, bulk_len,
  93                                        lstcon_rpc_done, (void *)crpc);
  94         if (crpc->crp_rpc == NULL)
  95                 return -ENOMEM;
  96
  97         crpc->crp_trans    = NULL;
  98         crpc->crp_node     = nd;
  99         crpc->crp_posted   = 0;
 100         crpc->crp_finished = 0;
 101         crpc->crp_unpacked = 0;
 102         crpc->crp_status   = 0;
 103         crpc->crp_stamp    = 0;
 104         crpc->crp_embedded = embedded;
 105         INIT_LIST_HEAD(&crpc->crp_link);
 106
 107         atomic_inc(&console_session.ses_rpc_counter);
 108
 109         return 0;
 110 }
 111
 112 static int
 113 lstcon_rpc_prep(lstcon_node_t *nd, int service, unsigned feats,
 114                 int bulk_npg, int bulk_len, lstcon_rpc_t **crpcpp)
 115 {
 116         lstcon_rpc_t  *crpc = NULL;
 117         int            rc;
 118
 119         spin_lock(&console_session.ses_rpc_lock);
 120
 121         if (!list_empty(&console_session.ses_rpc_freelist)) {
 122                 crpc = list_entry(console_session.ses_rpc_freelist.next,
 123                                   lstcon_rpc_t, crp_link);
 124                 list_del_init(&crpc->crp_link);
 125         }
 126
 127         spin_unlock(&console_session.ses_rpc_lock);
 128
 129         if (crpc == NULL) {
 130                 LIBCFS_ALLOC(crpc, sizeof(*crpc));
 131                 if (crpc == NULL)
 132                         return -ENOMEM;
 133         }
 134
 135         rc = lstcon_rpc_init(nd, service, feats, bulk_npg, bulk_len, 0, crpc);
 136         if (rc == 0) {
 137                 *crpcpp = crpc;
 138                 return 0;
 139         }
 140
 141         LIBCFS_FREE(crpc, sizeof(*crpc));
 142
 143         return rc;
 144 }
 145
 146 void
 147 lstcon_rpc_put(lstcon_rpc_t *crpc)
 148 {
 149         srpc_bulk_t *bulk = &crpc->crp_rpc->crpc_bulk;
 150         int          i;
 151
 152         LASSERT(list_empty(&crpc->crp_link));
 153
 154         for (i = 0; i < bulk->bk_niov; i++) {
 155                 if (bulk->bk_iovs[i].kiov_page == NULL)
 156                         continue;
 157
 158                 __free_page(bulk->bk_iovs[i].kiov_page);
 159         }
 160
 161         srpc_client_rpc_decref(crpc->crp_rpc);
 162
 163         if (crpc->crp_embedded) {
 164                 /* embedded RPC, don't recycle it */
 165                 memset(crpc, 0, sizeof(*crpc));
 166                 crpc->crp_embedded = 1;
 167
 168         } else {
 169                 spin_lock(&console_session.ses_rpc_lock);
 170
 171                 list_add(&crpc->crp_link,
 172                          &console_session.ses_rpc_freelist);
 173
 174                 spin_unlock(&console_session.ses_rpc_lock);
 175         }
 176
 177         /* RPC is not alive now */
 178         atomic_dec(&console_session.ses_rpc_counter);
 179 }
 180
 181 static void
 182 lstcon_rpc_post(lstcon_rpc_t *crpc)
 183 {
 184         lstcon_rpc_trans_t *trans = crpc->crp_trans;
 185
 186         LASSERT (trans != NULL);
 187
 188         atomic_inc(&trans->tas_remaining);
 189         crpc->crp_posted = 1;
 190
 191         sfw_post_rpc(crpc->crp_rpc);
 192 }
 193
 194 static char *
 195 lstcon_rpc_trans_name(int transop)
 196 {
 197         if (transop == LST_TRANS_SESNEW)
 198                 return "SESNEW";
 199
 200         if (transop == LST_TRANS_SESEND)
 201                 return "SESEND";
 202
 203         if (transop == LST_TRANS_SESQRY)
 204                 return "SESQRY";
 205
 206         if (transop == LST_TRANS_SESPING)
 207                 return "SESPING";
 208
 209         if (transop == LST_TRANS_TSBCLIADD)
 210                 return "TSBCLIADD";
 211
 212         if (transop == LST_TRANS_TSBSRVADD)
 213                 return "TSBSRVADD";
 214
 215         if (transop == LST_TRANS_TSBRUN)
 216                 return "TSBRUN";
 217
 218         if (transop == LST_TRANS_TSBSTOP)
 219                 return "TSBSTOP";
 220
 221         if (transop == LST_TRANS_TSBCLIQRY)
 222                 return "TSBCLIQRY";
 223
 224         if (transop == LST_TRANS_TSBSRVQRY)
 225                 return "TSBSRVQRY";
 226
 227         if (transop == LST_TRANS_STATQRY)
 228                 return "STATQRY";
 229
 230         return "Unknown";
 231 }
 232
 233 int
 234 lstcon_rpc_trans_prep(struct list_head *translist, int transop,
 235                       lstcon_rpc_trans_t **transpp)
 236 {
 237         lstcon_rpc_trans_t *trans;
 238
 239         if (translist != NULL) {
 240                 list_for_each_entry(trans, translist, tas_link) {
 241                         /* Can't enqueue two private transaction on
 242                          * the same object */
 243                         if ((trans->tas_opc & transop) == LST_TRANS_PRIVATE)
 244                                 return -EPERM;
 245                 }
 246         }
 247
 248         /* create a trans group */
 249         LIBCFS_ALLOC(trans, sizeof(*trans));
 250         if (trans == NULL)
 251                 return -ENOMEM;
 252
 253         trans->tas_opc = transop;
 254
 255         if (translist == NULL)
 256                 INIT_LIST_HEAD(&trans->tas_olink);
 257         else
 258                 list_add_tail(&trans->tas_olink, translist);
 259
 260         list_add_tail(&trans->tas_link, &console_session.ses_trans_list);
 261
 262         INIT_LIST_HEAD(&trans->tas_rpcs_list);
 263         atomic_set(&trans->tas_remaining, 0);
 264         init_waitqueue_head(&trans->tas_waitq);
 265
 266         spin_lock(&console_session.ses_rpc_lock);
 267         trans->tas_features = console_session.ses_features;
 268         spin_unlock(&console_session.ses_rpc_lock);
 269
 270         *transpp = trans;
 271         return 0;
 272 }
 273
 274 void
 275 lstcon_rpc_trans_addreq(lstcon_rpc_trans_t *trans, lstcon_rpc_t *crpc)
 276 {
 277         list_add_tail(&crpc->crp_link, &trans->tas_rpcs_list);
 278         crpc->crp_trans = trans;
 279 }
 280
 281 void
 282 lstcon_rpc_trans_abort(lstcon_rpc_trans_t *trans, int error)
 283 {
 284         srpc_client_rpc_t *rpc;
 285         lstcon_rpc_t      *crpc;
 286         lstcon_node_t     *nd;
 287
 288         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 289                 rpc = crpc->crp_rpc;
 290
 291                 spin_lock(&rpc->crpc_lock);
 292
 293                 if (!crpc->crp_posted || /* not posted */
 294                     crpc->crp_stamp != 0) { /* rpc done or aborted already */
 295                         if (crpc->crp_stamp == 0) {
 296                                 crpc->crp_stamp = cfs_time_current();
 297                                 crpc->crp_status = -EINTR;
 298                         }
 299                         spin_unlock(&rpc->crpc_lock);
 300                         continue;
 301                 }
 302
 303                 crpc->crp_stamp  = cfs_time_current();
 304                 crpc->crp_status = error;
 305
 306                 spin_unlock(&rpc->crpc_lock);
 307
 308                 sfw_abort_rpc(rpc);
 309
 310                 if (error != -ETIMEDOUT)
 311                         continue;
 312
 313                 nd = crpc->crp_node;
 314                 if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 315                         continue;
 316
 317                 nd->nd_stamp = crpc->crp_stamp;
 318                 nd->nd_state = LST_NODE_DOWN;
 319         }
 320 }
 321
 322 static int
 323 lstcon_rpc_trans_check(lstcon_rpc_trans_t *trans)
 324 {
 325         if (console_session.ses_shutdown &&
 326             !list_empty(&trans->tas_olink)) /* Not an end session RPC */
 327                 return 1;
 328
 329         return (atomic_read(&trans->tas_remaining) == 0) ? 1: 0;
 330 }
 331
 332 int
 333 lstcon_rpc_trans_postwait(lstcon_rpc_trans_t *trans, int timeout)
 334 {
 335         lstcon_rpc_t  *crpc;
 336         int            rc;
 337
 338         if (list_empty(&trans->tas_rpcs_list))
 339                 return 0;
 340
 341         if (timeout < LST_TRANS_MIN_TIMEOUT)
 342                 timeout = LST_TRANS_MIN_TIMEOUT;
 343
 344         CDEBUG(D_NET, "Transaction %s started\n",
 345         lstcon_rpc_trans_name(trans->tas_opc));
 346
 347         /* post all requests */
 348         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 349                 LASSERT(!crpc->crp_posted);
 350
 351                 lstcon_rpc_post(crpc);
 352         }
 353
 354         mutex_unlock(&console_session.ses_mutex);
 355
 356         rc = wait_event_interruptible_timeout(trans->tas_waitq,
 357                                               lstcon_rpc_trans_check(trans),
 358                                               cfs_time_seconds(timeout));
 359
 360         rc = (rc > 0)? 0: ((rc < 0)? -EINTR: -ETIMEDOUT);
 361
 362         mutex_lock(&console_session.ses_mutex);
 363
 364         if (console_session.ses_shutdown)
 365                 rc = -ESHUTDOWN;
 366
 367         if (rc != 0 || atomic_read(&trans->tas_remaining) != 0) {
 368                 /* treat short timeout as canceled */
 369                 if (rc == -ETIMEDOUT && timeout < LST_TRANS_MIN_TIMEOUT * 2)
 370                         rc = -EINTR;
 371
 372                 lstcon_rpc_trans_abort(trans, rc);
 373         }
 374
 375         CDEBUG(D_NET, "Transaction %s stopped: %d\n",
 376                lstcon_rpc_trans_name(trans->tas_opc), rc);
 377
 378         lstcon_rpc_trans_stat(trans, lstcon_trans_stat());
 379
 380         return rc;
 381 }
 382
 383 static int
 384 lstcon_rpc_get_reply(lstcon_rpc_t *crpc, srpc_msg_t **msgpp)
 385 {
 386         lstcon_node_t        *nd  = crpc->crp_node;
 387         srpc_client_rpc_t    *rpc = crpc->crp_rpc;
 388         srpc_generic_reply_t *rep;
 389
 390         LASSERT (nd != NULL && rpc != NULL);
 391         LASSERT (crpc->crp_stamp != 0);
 392
 393         if (crpc->crp_status != 0) {
 394                 *msgpp = NULL;
 395                 return crpc->crp_status;
 396         }
 397
 398         *msgpp = &rpc->crpc_replymsg;
 399         if (!crpc->crp_unpacked) {
 400                 sfw_unpack_message(*msgpp);
 401                 crpc->crp_unpacked = 1;
 402         }
 403
 404         if (cfs_time_after(nd->nd_stamp, crpc->crp_stamp))
 405                 return 0;
 406
 407         nd->nd_stamp = crpc->crp_stamp;
 408         rep = &(*msgpp)->msg_body.reply;
 409
 410         if (rep->sid.ses_nid == LNET_NID_ANY)
 411                 nd->nd_state = LST_NODE_UNKNOWN;
 412         else if (lstcon_session_match(rep->sid))
 413                 nd->nd_state = LST_NODE_ACTIVE;
 414         else
 415                 nd->nd_state = LST_NODE_BUSY;
 416
 417         return 0;
 418 }
 419
 420 void
 421 lstcon_rpc_trans_stat(lstcon_rpc_trans_t *trans, struct lstcon_trans_stat *stat)
 422 {
 423         lstcon_rpc_t    *crpc;
 424         srpc_msg_t      *rep;
 425         int              error;
 426
 427         LASSERT(stat != NULL);
 428
 429         memset(stat, 0, sizeof(*stat));
 430
 431         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 432                 lstcon_rpc_stat_total(stat, 1);
 433
 434                 LASSERT(crpc->crp_stamp != 0);
 435
 436                 error = lstcon_rpc_get_reply(crpc, &rep);
 437                 if (error != 0) {
 438                         lstcon_rpc_stat_failure(stat, 1);
 439                         if (stat->trs_rpc_errno == 0)
 440                                 stat->trs_rpc_errno = -error;
 441
 442                         continue;
 443                 }
 444
 445                 lstcon_rpc_stat_success(stat, 1);
 446
 447                 lstcon_rpc_stat_reply(trans, rep, crpc->crp_node, stat);
 448         }
 449
 450         if (trans->tas_opc == LST_TRANS_SESNEW && stat->trs_fwk_errno == 0) {
 451                 stat->trs_fwk_errno =
 452                       lstcon_session_feats_check(trans->tas_features);
 453         }
 454
 455         CDEBUG(D_NET, "transaction %s : success %d, failure %d, total %d, "
 456                       "RPC error(%d), Framework error(%d)\n",
 457                lstcon_rpc_trans_name(trans->tas_opc),
 458                lstcon_rpc_stat_success(stat, 0),
 459                lstcon_rpc_stat_failure(stat, 0),
 460                lstcon_rpc_stat_total(stat, 0),
 461                stat->trs_rpc_errno, stat->trs_fwk_errno);
 462
 463         return;
 464 }
 465
 466 int
 467 lstcon_rpc_trans_interpreter(lstcon_rpc_trans_t *trans,
 468                              struct list_head __user *head_up,
 469                              lstcon_rpc_readent_func_t readent)
 470 {
 471         struct list_head      tmp;
 472         struct list_head     __user *next;
 473         struct lstcon_rpc_ent     *ent;
 474         srpc_generic_reply_t *rep;
 475         lstcon_rpc_t         *crpc;
 476         srpc_msg_t           *msg;
 477         lstcon_node_t        *nd;
 478         cfs_duration_t        dur;
 479         struct timeval        tv;
 480         int                   error;
 481
 482         LASSERT(head_up != NULL);
 483
 484         next = head_up;
 485
 486         list_for_each_entry(crpc, &trans->tas_rpcs_list, crp_link) {
 487                 if (copy_from_user(&tmp, next,
 488                                    sizeof(struct list_head)))
 489                         return -EFAULT;
 490
 491                 if (tmp.next == head_up)
 492                         return 0;
 493
 494                 next = tmp.next;
 495
 496                 ent = list_entry(next, struct lstcon_rpc_ent, rpe_link);
 497
 498                 LASSERT(crpc->crp_stamp != 0);
 499
 500                 error = lstcon_rpc_get_reply(crpc, &msg);
 501
 502                 nd = crpc->crp_node;
 503
 504                 dur = (cfs_duration_t)cfs_time_sub(crpc->crp_stamp,
 505                       (cfs_time_t)console_session.ses_id.ses_stamp);
 506                 jiffies_to_timeval(dur, &tv);
 507
 508                 if (copy_to_user(&ent->rpe_peer,
 509                                  &nd->nd_id, sizeof(struct lnet_process_id)) ||
 510                     copy_to_user(&ent->rpe_stamp, &tv, sizeof(tv)) ||
 511                     copy_to_user(&ent->rpe_state,
 512                                  &nd->nd_state, sizeof(nd->nd_state)) ||
 513                     copy_to_user(&ent->rpe_rpc_errno, &error,
 514                                      sizeof(error)))
 515                         return -EFAULT;
 516
 517                 if (error != 0)
 518                         continue;
 519
 520                 /* RPC is done */
 521                 rep = (srpc_generic_reply_t *)&msg->msg_body.reply;
 522
 523                 if (copy_to_user(&ent->rpe_sid,
 524                                  &rep->sid, sizeof(rep->sid)) ||
 525                     copy_to_user(&ent->rpe_fwk_errno,
 526                                  &rep->status, sizeof(rep->status)))
 527                         return -EFAULT;
 528
 529                 if (readent == NULL)
 530                         continue;
 531
 532                 error = readent(trans->tas_opc, msg, ent);
 533                 if (error != 0)
 534                         return error;
 535         }
 536
 537         return 0;
 538 }
 539
 540 void
 541 lstcon_rpc_trans_destroy(lstcon_rpc_trans_t *trans)
 542 {
 543         srpc_client_rpc_t *rpc;
 544         lstcon_rpc_t      *crpc;
 545         lstcon_rpc_t      *tmp;
 546         int                count = 0;
 547
 548         list_for_each_entry_safe(crpc, tmp, &trans->tas_rpcs_list, crp_link) {
 549                 rpc = crpc->crp_rpc;
 550
 551                 spin_lock(&rpc->crpc_lock);
 552
 553                 /* free it if not posted or finished already */
 554                 if (!crpc->crp_posted || crpc->crp_finished) {
 555                         spin_unlock(&rpc->crpc_lock);
 556
 557                         list_del_init(&crpc->crp_link);
 558                         lstcon_rpc_put(crpc);
 559
 560                         continue;
 561                 }
 562
 563                 /* rpcs can be still not callbacked (even LNetMDUnlink is
 564                  * called) because huge timeout for inaccessible network,
 565                  * don't make user wait for them, just abandon them, they
 566                  * will be recycled in callback */
 567
 568                 LASSERT(crpc->crp_status != 0);
 569
 570                 crpc->crp_node  = NULL;
 571                 crpc->crp_trans = NULL;
 572                 list_del_init(&crpc->crp_link);
 573                 count++;
 574
 575                 spin_unlock(&rpc->crpc_lock);
 576
 577                 atomic_dec(&trans->tas_remaining);
 578         }
 579
 580         LASSERT(atomic_read(&trans->tas_remaining) == 0);
 581
 582         list_del(&trans->tas_link);
 583         if (!list_empty(&trans->tas_olink))
 584                 list_del(&trans->tas_olink);
 585
 586         CDEBUG(D_NET, "Transaction %s destroyed with %d pending RPCs\n",
 587                lstcon_rpc_trans_name(trans->tas_opc), count);
 588
 589         LIBCFS_FREE(trans, sizeof(*trans));
 590
 591         return;
 592 }
 593
 594 int
 595 lstcon_sesrpc_prep(lstcon_node_t *nd, int transop,
 596                    unsigned feats, lstcon_rpc_t **crpc)
 597 {
 598         srpc_mksn_reqst_t *msrq;
 599         srpc_rmsn_reqst_t *rsrq;
 600         int                rc;
 601
 602         switch (transop) {
 603         case LST_TRANS_SESNEW:
 604                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_MAKE_SESSION,
 605                                      feats, 0, 0, crpc);
 606                 if (rc != 0)
 607                         return rc;
 608
 609                 msrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.mksn_reqst;
 610                 msrq->mksn_sid     = console_session.ses_id;
 611                 msrq->mksn_force   = console_session.ses_force;
 612                 strlcpy(msrq->mksn_name, console_session.ses_name,
 613                         sizeof(msrq->mksn_name));
 614                 break;
 615
 616         case LST_TRANS_SESEND:
 617                 rc = lstcon_rpc_prep(nd, SRPC_SERVICE_REMOVE_SESSION,
 618                                      feats, 0, 0, crpc);
 619                 if (rc != 0)
 620                         return rc;
 621
 622                 rsrq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.rmsn_reqst;
 623                 rsrq->rmsn_sid = console_session.ses_id;
 624                 break;
 625
 626         default:
 627                 LBUG();
 628         }
 629
 630         return 0;
 631 }
 632
 633 int
 634 lstcon_dbgrpc_prep(lstcon_node_t *nd, unsigned feats, lstcon_rpc_t **crpc)
 635 {
 636         srpc_debug_reqst_t *drq;
 637         int                 rc;
 638
 639         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_DEBUG, feats, 0, 0, crpc);
 640         if (rc != 0)
 641                 return rc;
 642
 643         drq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.dbg_reqst;
 644
 645         drq->dbg_sid   = console_session.ses_id;
 646         drq->dbg_flags = 0;
 647
 648         return rc;
 649 }
 650
 651 int
 652 lstcon_batrpc_prep(lstcon_node_t *nd, int transop, unsigned feats,
 653                    lstcon_tsb_hdr_t *tsb, lstcon_rpc_t **crpc)
 654 {
 655         lstcon_batch_t     *batch;
 656         srpc_batch_reqst_t *brq;
 657         int                 rc;
 658
 659         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_BATCH, feats, 0, 0, crpc);
 660         if (rc != 0)
 661                 return rc;
 662
 663         brq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.bat_reqst;
 664
 665         brq->bar_sid     = console_session.ses_id;
 666         brq->bar_bid     = tsb->tsb_id;
 667         brq->bar_testidx = tsb->tsb_index;
 668         brq->bar_opc     = transop == LST_TRANS_TSBRUN ? SRPC_BATCH_OPC_RUN :
 669                            (transop == LST_TRANS_TSBSTOP ? SRPC_BATCH_OPC_STOP:
 670                             SRPC_BATCH_OPC_QUERY);
 671
 672         if (transop != LST_TRANS_TSBRUN &&
 673             transop != LST_TRANS_TSBSTOP)
 674                 return 0;
 675
 676         LASSERT (tsb->tsb_index == 0);
 677
 678         batch = (lstcon_batch_t *)tsb;
 679         brq->bar_arg = batch->bat_arg;
 680
 681         return 0;
 682 }
 683
 684 int
 685 lstcon_statrpc_prep(lstcon_node_t *nd, unsigned feats, lstcon_rpc_t **crpc)
 686 {
 687         srpc_stat_reqst_t *srq;
 688         int                rc;
 689
 690         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_QUERY_STAT, feats, 0, 0, crpc);
 691         if (rc != 0)
 692                 return rc;
 693
 694         srq = &(*crpc)->crp_rpc->crpc_reqstmsg.msg_body.stat_reqst;
 695
 696         srq->str_sid  = console_session.ses_id;
 697         srq->str_type = 0; /* XXX remove it */
 698
 699         return 0;
 700 }
 701
 702 static struct lnet_process_id_packed *
 703 lstcon_next_id(int idx, int nkiov, lnet_kiov_t *kiov)
 704 {
 705         struct lnet_process_id_packed *pid;
 706         int                       i;
 707
 708         i = idx / SFW_ID_PER_PAGE;
 709
 710         LASSERT (i < nkiov);
 711
 712         pid = (struct lnet_process_id_packed *)page_address(kiov[i].kiov_page);
 713
 714         return &pid[idx % SFW_ID_PER_PAGE];
 715 }
 716
 717 static int
 718 lstcon_dstnodes_prep(lstcon_group_t *grp, int idx,
 719                      int dist, int span, int nkiov, lnet_kiov_t *kiov)
 720 {
 721         struct lnet_process_id_packed *pid;
 722         lstcon_ndlink_t          *ndl;
 723         lstcon_node_t            *nd;
 724         int                       start;
 725         int                       end;
 726         int                       i = 0;
 727
 728         LASSERT (dist >= 1);
 729         LASSERT (span >= 1);
 730         LASSERT (grp->grp_nnode >= 1);
 731
 732         if (span > grp->grp_nnode)
 733                 return -EINVAL;
 734
 735         start = ((idx / dist) * span) % grp->grp_nnode;
 736         end   = ((idx / dist) * span + span - 1) % grp->grp_nnode;
 737
 738         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 739                 nd = ndl->ndl_node;
 740                 if (i < start) {
 741                         i++;
 742                         continue;
 743                 }
 744
 745                 if (i > (end >= start ? end : grp->grp_nnode))
 746                         break;
 747
 748                 pid = lstcon_next_id((i - start), nkiov, kiov);
 749                 pid->nid = nd->nd_id.nid;
 750                 pid->pid = nd->nd_id.pid;
 751                 i++;
 752         }
 753
 754         if (start <= end)       /* done */
 755                 return 0;
 756
 757         list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link) {
 758                 if (i > grp->grp_nnode + end)
 759                         break;
 760
 761                 nd = ndl->ndl_node;
 762                 pid = lstcon_next_id((i - start), nkiov, kiov);
 763                 pid->nid = nd->nd_id.nid;
 764                 pid->pid = nd->nd_id.pid;
 765                 i++;
 766         }
 767
 768         return 0;
 769 }
 770
 771 static int
 772 lstcon_pingrpc_prep(struct lst_test_ping_param *param, srpc_test_reqst_t *req)
 773 {
 774         test_ping_req_t *prq = &req->tsr_u.ping;
 775
 776         prq->png_size   = param->png_size;
 777         prq->png_flags  = param->png_flags;
 778         /* TODO dest */
 779         return 0;
 780 }
 781
 782 static int
 783 lstcon_bulkrpc_v0_prep(struct lst_test_bulk_param *param, srpc_test_reqst_t *req)
 784 {
 785         test_bulk_req_t *brq = &req->tsr_u.bulk_v0;
 786
 787         brq->blk_opc    = param->blk_opc;
 788         brq->blk_npg    = (param->blk_size + PAGE_SIZE - 1) /
 789                            PAGE_SIZE;
 790         brq->blk_flags  = param->blk_flags;
 791
 792         return 0;
 793 }
 794
 795 static int
 796 lstcon_bulkrpc_v1_prep(struct lst_test_bulk_param *param, bool is_client,
 797                        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 = is_client ? param->blk_cli_off : param->blk_srv_off;
 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) == 0 ?
 825                       npg * PAGE_SIZE :
 826                       sizeof(struct lnet_process_id_packed) * test->tes_span;
 827         }
 828
 829         rc = lstcon_rpc_prep(nd, SRPC_SERVICE_TEST, feats, npg, nob, crpc);
 830         if (rc != 0)
 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) / test->tes_dist;
 837                 int nspan = (dgrp->grp_nnode + test->tes_span - 1) / test->tes_span;
 838                 int nmax = (ndist + nspan - 1) / nspan;
 839
 840                 trq->tsr_ndest = 0;
 841                 trq->tsr_loop  = nmax * test->tes_dist * test->tes_concur;
 842
 843         } else {
 844                 bulk = &(*crpc)->crp_rpc->crpc_bulk;
 845
 846                 for (i = 0; i < npg; i++) {
 847                         int     len;
 848
 849                         LASSERT(nob > 0);
 850
 851                         len = (feats & LST_FEAT_BULK_LEN) == 0 ?
 852                               PAGE_SIZE : min_t(int, nob, PAGE_SIZE);
 853                         nob -= len;
 854
 855                         bulk->bk_iovs[i].kiov_offset = 0;
 856                         bulk->bk_iovs[i].kiov_len    = len;
 857                         bulk->bk_iovs[i].kiov_page   =
 858                                 alloc_page(GFP_KERNEL);
 859
 860                         if (bulk->bk_iovs[i].kiov_page == NULL) {
 861                                 lstcon_rpc_put(*crpc);
 862                                 return -ENOMEM;
 863                         }
 864                 }
 865
 866                 bulk->bk_sink = 0;
 867
 868                 LASSERT (transop == LST_TRANS_TSBCLIADD);
 869
 870                 rc = lstcon_dstnodes_prep(test->tes_dst_grp,
 871                                           test->tes_cliidx++,
 872                                           test->tes_dist,
 873                                           test->tes_span,
 874                                           npg, &bulk->bk_iovs[0]);
 875                 if (rc != 0) {
 876                         lstcon_rpc_put(*crpc);
 877                         return rc;
 878                 }
 879
 880                 trq->tsr_ndest = test->tes_span;
 881                 trq->tsr_loop  = test->tes_loop;
 882         }
 883
 884         trq->tsr_sid        = console_session.ses_id;
 885         trq->tsr_bid        = test->tes_hdr.tsb_id;
 886         trq->tsr_concur     = test->tes_concur;
 887         trq->tsr_is_client  = (transop == LST_TRANS_TSBCLIADD) ? 1 : 0;
 888         trq->tsr_stop_onerr = !!test->tes_stop_onerr;
 889
 890         switch (test->tes_type) {
 891         case LST_TEST_PING:
 892                 trq->tsr_service = SRPC_SERVICE_PING;
 893                 rc = lstcon_pingrpc_prep((struct lst_test_ping_param *)
 894                                          &test->tes_param[0], trq);
 895                 break;
 896
 897         case LST_TEST_BULK:
 898                 trq->tsr_service = SRPC_SERVICE_BRW;
 899                 if ((feats & LST_FEAT_BULK_LEN) == 0) {
 900                         rc = lstcon_bulkrpc_v0_prep((struct lst_test_bulk_param *)
 901                                                     &test->tes_param[0], trq);
 902                 } else {
 903                         rc = lstcon_bulkrpc_v1_prep((struct lst_test_bulk_param *)
 904                                                     &test->tes_param[0],
 905                                                     trq->tsr_is_client, trq);
 906                 }
 907
 908                 break;
 909         default:
 910                 LBUG();
 911                 break;
 912         }
 913
 914         return rc;
 915 }
 916
 917 static int
 918 lstcon_sesnew_stat_reply(lstcon_rpc_trans_t *trans,
 919                          lstcon_node_t *nd, srpc_msg_t *reply)
 920 {
 921         srpc_mksn_reply_t *mksn_rep = &reply->msg_body.mksn_reply;
 922         int                status   = mksn_rep->mksn_status;
 923
 924         if (status == 0 &&
 925             (reply->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 926                 mksn_rep->mksn_status = EPROTO;
 927                 status = EPROTO;
 928         }
 929
 930         if (status == EPROTO) {
 931                 CNETERR("session protocol error from %s: %u\n",
 932                         libcfs_nid2str(nd->nd_id.nid),
 933                         reply->msg_ses_feats);
 934         }
 935
 936         if (status != 0)
 937                 return status;
 938
 939         if (!trans->tas_feats_updated) {
 940                 spin_lock(&console_session.ses_rpc_lock);
 941                 if (!trans->tas_feats_updated) { /* recheck with lock */
 942                         trans->tas_feats_updated = 1;
 943                         trans->tas_features = reply->msg_ses_feats;
 944                 }
 945                 spin_unlock(&console_session.ses_rpc_lock);
 946         }
 947
 948         if (reply->msg_ses_feats != trans->tas_features) {
 949                 CNETERR("Framework features %x from %s is different with "
 950                         "features on this transaction: %x\n",
 951                          reply->msg_ses_feats, libcfs_nid2str(nd->nd_id.nid),
 952                          trans->tas_features);
 953                 status = mksn_rep->mksn_status = EPROTO;
 954         }
 955
 956         if (status == 0) {
 957                 /* session timeout on remote node */
 958                 nd->nd_timeout = mksn_rep->mksn_timeout;
 959         }
 960
 961         return status;
 962 }
 963
 964 void
 965 lstcon_rpc_stat_reply(lstcon_rpc_trans_t *trans, srpc_msg_t *msg,
 966                       lstcon_node_t *nd, struct lstcon_trans_stat *stat)
 967 {
 968         srpc_rmsn_reply_t  *rmsn_rep;
 969         srpc_debug_reply_t *dbg_rep;
 970         srpc_batch_reply_t *bat_rep;
 971         srpc_test_reply_t  *test_rep;
 972         srpc_stat_reply_t  *stat_rep;
 973         int                 rc = 0;
 974
 975         switch (trans->tas_opc) {
 976         case LST_TRANS_SESNEW:
 977                 rc = lstcon_sesnew_stat_reply(trans, nd, msg);
 978                 if (rc == 0) {
 979                         lstcon_sesop_stat_success(stat, 1);
 980                         return;
 981                 }
 982
 983                 lstcon_sesop_stat_failure(stat, 1);
 984                 break;
 985
 986         case LST_TRANS_SESEND:
 987                 rmsn_rep = &msg->msg_body.rmsn_reply;
 988                 /* ESRCH is not an error for end session */
 989                 if (rmsn_rep->rmsn_status == 0 ||
 990                     rmsn_rep->rmsn_status == ESRCH) {
 991                         lstcon_sesop_stat_success(stat, 1);
 992                         return;
 993                 }
 994
 995                 lstcon_sesop_stat_failure(stat, 1);
 996                 rc = rmsn_rep->rmsn_status;
 997                 break;
 998
 999         case LST_TRANS_SESQRY:
1000         case LST_TRANS_SESPING:
1001                 dbg_rep = &msg->msg_body.dbg_reply;
1002
1003                 if (dbg_rep->dbg_status == ESRCH) {
1004                         lstcon_sesqry_stat_unknown(stat, 1);
1005                         return;
1006                 }
1007
1008                 if (lstcon_session_match(dbg_rep->dbg_sid))
1009                         lstcon_sesqry_stat_active(stat, 1);
1010                 else
1011                         lstcon_sesqry_stat_busy(stat, 1);
1012                 return;
1013
1014         case LST_TRANS_TSBRUN:
1015         case LST_TRANS_TSBSTOP:
1016                 bat_rep = &msg->msg_body.bat_reply;
1017
1018                 if (bat_rep->bar_status == 0) {
1019                         lstcon_tsbop_stat_success(stat, 1);
1020                         return;
1021                 }
1022
1023                 if (bat_rep->bar_status == EPERM &&
1024                     trans->tas_opc == LST_TRANS_TSBSTOP) {
1025                         lstcon_tsbop_stat_success(stat, 1);
1026                         return;
1027                 }
1028
1029                 lstcon_tsbop_stat_failure(stat, 1);
1030                 rc = bat_rep->bar_status;
1031                 break;
1032
1033         case LST_TRANS_TSBCLIQRY:
1034         case LST_TRANS_TSBSRVQRY:
1035                 bat_rep = &msg->msg_body.bat_reply;
1036
1037                 if (bat_rep->bar_active != 0)
1038                         lstcon_tsbqry_stat_run(stat, 1);
1039                 else
1040                         lstcon_tsbqry_stat_idle(stat, 1);
1041
1042                 if (bat_rep->bar_status == 0)
1043                         return;
1044
1045                 lstcon_tsbqry_stat_failure(stat, 1);
1046                 rc = bat_rep->bar_status;
1047                 break;
1048
1049         case LST_TRANS_TSBCLIADD:
1050         case LST_TRANS_TSBSRVADD:
1051                 test_rep = &msg->msg_body.tes_reply;
1052
1053                 if (test_rep->tsr_status == 0) {
1054                         lstcon_tsbop_stat_success(stat, 1);
1055                         return;
1056                 }
1057
1058                 lstcon_tsbop_stat_failure(stat, 1);
1059                 rc = test_rep->tsr_status;
1060                 break;
1061
1062         case LST_TRANS_STATQRY:
1063                 stat_rep = &msg->msg_body.stat_reply;
1064
1065                 if (stat_rep->str_status == 0) {
1066                         lstcon_statqry_stat_success(stat, 1);
1067                         return;
1068                 }
1069
1070                 lstcon_statqry_stat_failure(stat, 1);
1071                 rc = stat_rep->str_status;
1072                 break;
1073
1074         default:
1075                 LBUG();
1076         }
1077
1078         if (stat->trs_fwk_errno == 0)
1079                 stat->trs_fwk_errno = rc;
1080
1081         return;
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 != 0) {
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 == NULL ? 1 :
1108                      condition(transop, ndl->ndl_node, arg);
1109
1110                 if (rc == 0)
1111                         continue;
1112
1113                 if (rc < 0) {
1114                         CDEBUG(D_NET, "Condition error while creating RPC "
1115                                       " for transaction %d: %d\n", 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 != 0) {
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 == 0) {
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         stt_timer_t        *ptimer = (stt_timer_t *)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 != NULL);
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 != 0) {
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 != NULL) {
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 = cfs_duration_sec(jiffies - nd->nd_stamp);
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 != 0) {
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         stt_timer_t     *ptimer;
1290         int              rc;
1291
1292         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1293         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1294
1295         rc = lstcon_rpc_trans_prep(NULL, LST_TRANS_SESPING,
1296                                    &console_session.ses_ping);
1297         if (rc != 0) {
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(struct lstcon_trans_stat));
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         struct list_head        *pacer;
1332         struct list_head         zlist;
1333
1334         /* Called with hold of global mutex */
1335
1336         LASSERT(console_session.ses_shutdown);
1337
1338         while (!list_empty(&console_session.ses_trans_list)) {
1339                 list_for_each(pacer, &console_session.ses_trans_list) {
1340                         trans = list_entry(pacer, lstcon_rpc_trans_t,
1341                                            tas_link);
1342
1343                         CDEBUG(D_NET, "Session closed, wakeup transaction %s\n",
1344                                lstcon_rpc_trans_name(trans->tas_opc));
1345
1346                         wake_up(&trans->tas_waitq);
1347                 }
1348
1349                 mutex_unlock(&console_session.ses_mutex);
1350
1351                 CWARN("Session is shutting down, "
1352                       "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) == 0),
1362                        console_session.ses_rpc_lock,
1363                        "Network is not accessable or target is down, "
1364                        "waiting for %d console RPCs to being recycled\n",
1365                        atomic_read(&console_session.ses_rpc_counter));
1366
1367         list_add(&zlist, &console_session.ses_rpc_freelist);
1368         list_del_init(&console_session.ses_rpc_freelist);
1369
1370         spin_unlock(&console_session.ses_rpc_lock);
1371
1372         while (!list_empty(&zlist)) {
1373                 crpc = list_entry(zlist.next, lstcon_rpc_t, crp_link);
1374
1375                 list_del(&crpc->crp_link);
1376                 LIBCFS_FREE(crpc, sizeof(lstcon_rpc_t));
1377         }
1378 }
1379
1380 int
1381 lstcon_rpc_module_init(void)
1382 {
1383         INIT_LIST_HEAD(&console_session.ses_ping_timer.stt_list);
1384         console_session.ses_ping_timer.stt_func = lstcon_rpc_pinger;
1385         console_session.ses_ping_timer.stt_data = &console_session.ses_ping_timer;
1386
1387         console_session.ses_ping = NULL;
1388
1389         spin_lock_init(&console_session.ses_rpc_lock);
1390         atomic_set(&console_session.ses_rpc_counter, 0);
1391         INIT_LIST_HEAD(&console_session.ses_rpc_freelist);
1392
1393         return 0;
1394 }
1395
1396 void
1397 lstcon_rpc_module_fini(void)
1398 {
1399         LASSERT(list_empty(&console_session.ses_rpc_freelist));
1400         LASSERT(atomic_read(&console_session.ses_rpc_counter) == 0);
1401 }
1402