drivers/staging/lustre/lnet/selftest/framework.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2012, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lnet/selftest/framework.c
  37  *
  38  * Author: Isaac Huang <isaac@clusterfs.com>
  39  * Author: Liang Zhen  <liangzhen@clusterfs.com>
  40  */
  41
  42 #define DEBUG_SUBSYSTEM S_LNET
  43
  44 #include "selftest.h"
  45
  46 lst_sid_t LST_INVALID_SID = {LNET_NID_ANY, -1};
  47
  48 static int session_timeout = 100;
  49 module_param(session_timeout, int, 0444);
  50 MODULE_PARM_DESC(session_timeout, "test session timeout in seconds (100 by default, 0 == never)");
  51
  52 static int rpc_timeout = 64;
  53 module_param(rpc_timeout, int, 0644);
  54 MODULE_PARM_DESC(rpc_timeout, "rpc timeout in seconds (64 by default, 0 == never)");
  55
  56 #define sfw_unpack_id(id)              \
  57 do {                                \
  58         __swab64s(&(id).nid);      \
  59         __swab32s(&(id).pid);      \
  60 } while (0)
  61
  62 #define sfw_unpack_sid(sid)          \
  63 do {                                \
  64         __swab64s(&(sid).ses_nid);      \
  65         __swab64s(&(sid).ses_stamp);    \
  66 } while (0)
  67
  68 #define sfw_unpack_fw_counters(fc)      \
  69 do {                                  \
  70         __swab32s(&(fc).running_ms);      \
  71         __swab32s(&(fc).active_batches);  \
  72         __swab32s(&(fc).zombie_sessions); \
  73         __swab32s(&(fc).brw_errors);      \
  74         __swab32s(&(fc).ping_errors);     \
  75 } while (0)
  76
  77 #define sfw_unpack_rpc_counters(rc)     \
  78 do {                                \
  79         __swab32s(&(rc).errors);        \
  80         __swab32s(&(rc).rpcs_sent);     \
  81         __swab32s(&(rc).rpcs_rcvd);     \
  82         __swab32s(&(rc).rpcs_dropped);  \
  83         __swab32s(&(rc).rpcs_expired);  \
  84         __swab64s(&(rc).bulk_get);      \
  85         __swab64s(&(rc).bulk_put);      \
  86 } while (0)
  87
  88 #define sfw_unpack_lnet_counters(lc)    \
  89 do {                                \
  90         __swab32s(&(lc).errors);        \
  91         __swab32s(&(lc).msgs_max);      \
  92         __swab32s(&(lc).msgs_alloc);    \
  93         __swab32s(&(lc).send_count);    \
  94         __swab32s(&(lc).recv_count);    \
  95         __swab32s(&(lc).drop_count);    \
  96         __swab32s(&(lc).route_count);   \
  97         __swab64s(&(lc).send_length);   \
  98         __swab64s(&(lc).recv_length);   \
  99         __swab64s(&(lc).drop_length);   \
 100         __swab64s(&(lc).route_length);  \
 101 } while (0)
 102
 103 #define sfw_test_active(t)      (atomic_read(&(t)->tsi_nactive) != 0)
 104 #define sfw_batch_active(b)     (atomic_read(&(b)->bat_nactive) != 0)
 105
 106 struct smoketest_framework {
 107         struct list_head         fw_zombie_rpcs;     /* RPCs to be recycled */
 108         struct list_head         fw_zombie_sessions; /* stopping sessions */
 109         struct list_head         fw_tests;         /* registered test cases */
 110         atomic_t       fw_nzombies;     /* # zombie sessions */
 111         spinlock_t         fw_lock;             /* serialise */
 112         sfw_session_t     *fw_session;          /* _the_ session */
 113         int                fw_shuttingdown;     /* shutdown in progress */
 114         srpc_server_rpc_t *fw_active_srpc;      /* running RPC */
 115 } sfw_data;
 116
 117 /* forward ref's */
 118 int sfw_stop_batch (sfw_batch_t *tsb, int force);
 119 void sfw_destroy_session (sfw_session_t *sn);
 120
 121 static inline sfw_test_case_t *
 122 sfw_find_test_case(int id)
 123 {
 124         sfw_test_case_t *tsc;
 125
 126         LASSERT (id <= SRPC_SERVICE_MAX_ID);
 127         LASSERT (id > SRPC_FRAMEWORK_SERVICE_MAX_ID);
 128
 129         list_for_each_entry (tsc, &sfw_data.fw_tests, tsc_list) {
 130                 if (tsc->tsc_srv_service->sv_id == id)
 131                         return tsc;
 132         }
 133
 134         return NULL;
 135 }
 136
 137 static int
 138 sfw_register_test (srpc_service_t *service, sfw_test_client_ops_t *cliops)
 139 {
 140         sfw_test_case_t *tsc;
 141
 142         if (sfw_find_test_case(service->sv_id) != NULL) {
 143                 CERROR ("Failed to register test %s (%d)\n",
 144                         service->sv_name, service->sv_id);
 145                 return -EEXIST;
 146         }
 147
 148         LIBCFS_ALLOC(tsc, sizeof(sfw_test_case_t));
 149         if (tsc == NULL)
 150                 return -ENOMEM;
 151
 152         tsc->tsc_cli_ops     = cliops;
 153         tsc->tsc_srv_service = service;
 154
 155         list_add_tail(&tsc->tsc_list, &sfw_data.fw_tests);
 156         return 0;
 157 }
 158
 159 static void
 160 sfw_add_session_timer (void)
 161 {
 162         sfw_session_t *sn = sfw_data.fw_session;
 163         stt_timer_t   *timer = &sn->sn_timer;
 164
 165         LASSERT (!sfw_data.fw_shuttingdown);
 166
 167         if (sn == NULL || sn->sn_timeout == 0)
 168                 return;
 169
 170         LASSERT (!sn->sn_timer_active);
 171
 172         sn->sn_timer_active = 1;
 173         timer->stt_expires = cfs_time_add(sn->sn_timeout,
 174                                           get_seconds());
 175         stt_add_timer(timer);
 176         return;
 177 }
 178
 179 static int
 180 sfw_del_session_timer (void)
 181 {
 182         sfw_session_t *sn = sfw_data.fw_session;
 183
 184         if (sn == NULL || !sn->sn_timer_active)
 185                 return 0;
 186
 187         LASSERT (sn->sn_timeout != 0);
 188
 189         if (stt_del_timer(&sn->sn_timer)) { /* timer defused */
 190                 sn->sn_timer_active = 0;
 191                 return 0;
 192         }
 193
 194         return EBUSY; /* racing with sfw_session_expired() */
 195 }
 196
 197 /* called with sfw_data.fw_lock held */
 198 static void
 199 sfw_deactivate_session (void)
 200 {
 201         sfw_session_t *sn = sfw_data.fw_session;
 202         int         nactive = 0;
 203         sfw_batch_t   *tsb;
 204         sfw_test_case_t *tsc;
 205
 206         if (sn == NULL) return;
 207
 208         LASSERT (!sn->sn_timer_active);
 209
 210         sfw_data.fw_session = NULL;
 211         atomic_inc(&sfw_data.fw_nzombies);
 212         list_add(&sn->sn_list, &sfw_data.fw_zombie_sessions);
 213
 214         spin_unlock(&sfw_data.fw_lock);
 215
 216         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
 217                 srpc_abort_service(tsc->tsc_srv_service);
 218         }
 219
 220         spin_lock(&sfw_data.fw_lock);
 221
 222         list_for_each_entry (tsb, &sn->sn_batches, bat_list) {
 223                 if (sfw_batch_active(tsb)) {
 224                         nactive++;
 225                         sfw_stop_batch(tsb, 1);
 226                 }
 227         }
 228
 229         if (nactive != 0)
 230                 return;   /* wait for active batches to stop */
 231
 232         list_del_init(&sn->sn_list);
 233         spin_unlock(&sfw_data.fw_lock);
 234
 235         sfw_destroy_session(sn);
 236
 237         spin_lock(&sfw_data.fw_lock);
 238 }
 239
 240
 241 static void
 242 sfw_session_expired (void *data)
 243 {
 244         sfw_session_t *sn = data;
 245
 246         spin_lock(&sfw_data.fw_lock);
 247
 248         LASSERT (sn->sn_timer_active);
 249         LASSERT (sn == sfw_data.fw_session);
 250
 251         CWARN ("Session expired! sid: %s-%llu, name: %s\n",
 252                libcfs_nid2str(sn->sn_id.ses_nid),
 253                sn->sn_id.ses_stamp, &sn->sn_name[0]);
 254
 255         sn->sn_timer_active = 0;
 256         sfw_deactivate_session();
 257
 258         spin_unlock(&sfw_data.fw_lock);
 259 }
 260
 261 static inline void
 262 sfw_init_session(sfw_session_t *sn, lst_sid_t sid,
 263                  unsigned features, const char *name)
 264 {
 265         stt_timer_t *timer = &sn->sn_timer;
 266
 267         memset(sn, 0, sizeof(sfw_session_t));
 268         INIT_LIST_HEAD(&sn->sn_list);
 269         INIT_LIST_HEAD(&sn->sn_batches);
 270         atomic_set(&sn->sn_refcount, 1);        /* +1 for caller */
 271         atomic_set(&sn->sn_brw_errors, 0);
 272         atomic_set(&sn->sn_ping_errors, 0);
 273         strlcpy(&sn->sn_name[0], name, sizeof(sn->sn_name));
 274
 275         sn->sn_timer_active = 0;
 276         sn->sn_id          = sid;
 277         sn->sn_features     = features;
 278         sn->sn_timeout      = session_timeout;
 279         sn->sn_started      = cfs_time_current();
 280
 281         timer->stt_data = sn;
 282         timer->stt_func = sfw_session_expired;
 283         INIT_LIST_HEAD(&timer->stt_list);
 284 }
 285
 286 /* completion handler for incoming framework RPCs */
 287 static void
 288 sfw_server_rpc_done(struct srpc_server_rpc *rpc)
 289 {
 290         struct srpc_service     *sv     = rpc->srpc_scd->scd_svc;
 291         int                     status  = rpc->srpc_status;
 292
 293         CDEBUG (D_NET,
 294                 "Incoming framework RPC done: "
 295                 "service %s, peer %s, status %s:%d\n",
 296                 sv->sv_name, libcfs_id2str(rpc->srpc_peer),
 297                 swi_state2str(rpc->srpc_wi.swi_state),
 298                 status);
 299
 300         if (rpc->srpc_bulk != NULL)
 301                 sfw_free_pages(rpc);
 302         return;
 303 }
 304
 305 static void
 306 sfw_client_rpc_fini (srpc_client_rpc_t *rpc)
 307 {
 308         LASSERT (rpc->crpc_bulk.bk_niov == 0);
 309         LASSERT (list_empty(&rpc->crpc_list));
 310         LASSERT (atomic_read(&rpc->crpc_refcount) == 0);
 311
 312         CDEBUG (D_NET,
 313                 "Outgoing framework RPC done: "
 314                 "service %d, peer %s, status %s:%d:%d\n",
 315                 rpc->crpc_service, libcfs_id2str(rpc->crpc_dest),
 316                 swi_state2str(rpc->crpc_wi.swi_state),
 317                 rpc->crpc_aborted, rpc->crpc_status);
 318
 319         spin_lock(&sfw_data.fw_lock);
 320
 321         /* my callers must finish all RPCs before shutting me down */
 322         LASSERT(!sfw_data.fw_shuttingdown);
 323         list_add(&rpc->crpc_list, &sfw_data.fw_zombie_rpcs);
 324
 325         spin_unlock(&sfw_data.fw_lock);
 326 }
 327
 328 static sfw_batch_t *
 329 sfw_find_batch (lst_bid_t bid)
 330 {
 331         sfw_session_t *sn = sfw_data.fw_session;
 332         sfw_batch_t   *bat;
 333
 334         LASSERT (sn != NULL);
 335
 336         list_for_each_entry (bat, &sn->sn_batches, bat_list) {
 337                 if (bat->bat_id.bat_id == bid.bat_id)
 338                         return bat;
 339         }
 340
 341         return NULL;
 342 }
 343
 344 static sfw_batch_t *
 345 sfw_bid2batch (lst_bid_t bid)
 346 {
 347         sfw_session_t *sn = sfw_data.fw_session;
 348         sfw_batch_t   *bat;
 349
 350         LASSERT (sn != NULL);
 351
 352         bat = sfw_find_batch(bid);
 353         if (bat != NULL)
 354                 return bat;
 355
 356         LIBCFS_ALLOC(bat, sizeof(sfw_batch_t));
 357         if (bat == NULL)
 358                 return NULL;
 359
 360         bat->bat_error    = 0;
 361         bat->bat_session  = sn;
 362         bat->bat_id       = bid;
 363         atomic_set(&bat->bat_nactive, 0);
 364         INIT_LIST_HEAD(&bat->bat_tests);
 365
 366         list_add_tail(&bat->bat_list, &sn->sn_batches);
 367         return bat;
 368 }
 369
 370 static int
 371 sfw_get_stats (srpc_stat_reqst_t *request, srpc_stat_reply_t *reply)
 372 {
 373         sfw_session_t  *sn = sfw_data.fw_session;
 374         sfw_counters_t *cnt = &reply->str_fw;
 375         sfw_batch_t    *bat;
 376         struct timeval  tv;
 377
 378         reply->str_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 379
 380         if (request->str_sid.ses_nid == LNET_NID_ANY) {
 381                 reply->str_status = EINVAL;
 382                 return 0;
 383         }
 384
 385         if (sn == NULL || !sfw_sid_equal(request->str_sid, sn->sn_id)) {
 386                 reply->str_status = ESRCH;
 387                 return 0;
 388         }
 389
 390         lnet_counters_get(&reply->str_lnet);
 391         srpc_get_counters(&reply->str_rpc);
 392
 393         /* send over the msecs since the session was started
 394          - with 32 bits to send, this is ~49 days */
 395         cfs_duration_usec(cfs_time_sub(cfs_time_current(),
 396                                        sn->sn_started), &tv);
 397
 398         cnt->running_ms      = (__u32)(tv.tv_sec * 1000 + tv.tv_usec / 1000);
 399         cnt->brw_errors      = atomic_read(&sn->sn_brw_errors);
 400         cnt->ping_errors     = atomic_read(&sn->sn_ping_errors);
 401         cnt->zombie_sessions = atomic_read(&sfw_data.fw_nzombies);
 402
 403         cnt->active_batches = 0;
 404         list_for_each_entry (bat, &sn->sn_batches, bat_list) {
 405                 if (atomic_read(&bat->bat_nactive) > 0)
 406                         cnt->active_batches++;
 407         }
 408
 409         reply->str_status = 0;
 410         return 0;
 411 }
 412
 413 int
 414 sfw_make_session(srpc_mksn_reqst_t *request, srpc_mksn_reply_t *reply)
 415 {
 416         sfw_session_t *sn = sfw_data.fw_session;
 417         srpc_msg_t    *msg = container_of(request, srpc_msg_t,
 418                                           msg_body.mksn_reqst);
 419         int            cplen = 0;
 420
 421         if (request->mksn_sid.ses_nid == LNET_NID_ANY) {
 422                 reply->mksn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 423                 reply->mksn_status = EINVAL;
 424                 return 0;
 425         }
 426
 427         if (sn != NULL) {
 428                 reply->mksn_status  = 0;
 429                 reply->mksn_sid     = sn->sn_id;
 430                 reply->mksn_timeout = sn->sn_timeout;
 431
 432                 if (sfw_sid_equal(request->mksn_sid, sn->sn_id)) {
 433                         atomic_inc(&sn->sn_refcount);
 434                         return 0;
 435                 }
 436
 437                 if (!request->mksn_force) {
 438                         reply->mksn_status = EBUSY;
 439                         cplen = strlcpy(&reply->mksn_name[0], &sn->sn_name[0],
 440                                         sizeof(reply->mksn_name));
 441                         if (cplen >= sizeof(reply->mksn_name))
 442                                 return -E2BIG;
 443                         return 0;
 444                 }
 445         }
 446
 447         /* reject the request if it requires unknown features
 448          * NB: old version will always accept all features because it's not
 449          * aware of srpc_msg_t::msg_ses_feats, it's a defect but it's also
 450          * harmless because it will return zero feature to console, and it's
 451          * console's responsibility to make sure all nodes in a session have
 452          * same feature mask. */
 453         if ((msg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 454                 reply->mksn_status = EPROTO;
 455                 return 0;
 456         }
 457
 458         /* brand new or create by force */
 459         LIBCFS_ALLOC(sn, sizeof(sfw_session_t));
 460         if (sn == NULL) {
 461                 CERROR ("Dropping RPC (mksn) under memory pressure.\n");
 462                 return -ENOMEM;
 463         }
 464
 465         sfw_init_session(sn, request->mksn_sid,
 466                          msg->msg_ses_feats, &request->mksn_name[0]);
 467
 468         spin_lock(&sfw_data.fw_lock);
 469
 470         sfw_deactivate_session();
 471         LASSERT(sfw_data.fw_session == NULL);
 472         sfw_data.fw_session = sn;
 473
 474         spin_unlock(&sfw_data.fw_lock);
 475
 476         reply->mksn_status  = 0;
 477         reply->mksn_sid     = sn->sn_id;
 478         reply->mksn_timeout = sn->sn_timeout;
 479         return 0;
 480 }
 481
 482 static int
 483 sfw_remove_session (srpc_rmsn_reqst_t *request, srpc_rmsn_reply_t *reply)
 484 {
 485         sfw_session_t *sn = sfw_data.fw_session;
 486
 487         reply->rmsn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 488
 489         if (request->rmsn_sid.ses_nid == LNET_NID_ANY) {
 490                 reply->rmsn_status = EINVAL;
 491                 return 0;
 492         }
 493
 494         if (sn == NULL || !sfw_sid_equal(request->rmsn_sid, sn->sn_id)) {
 495                 reply->rmsn_status = (sn == NULL) ? ESRCH : EBUSY;
 496                 return 0;
 497         }
 498
 499         if (!atomic_dec_and_test(&sn->sn_refcount)) {
 500                 reply->rmsn_status = 0;
 501                 return 0;
 502         }
 503
 504         spin_lock(&sfw_data.fw_lock);
 505         sfw_deactivate_session();
 506         spin_unlock(&sfw_data.fw_lock);
 507
 508         reply->rmsn_status = 0;
 509         reply->rmsn_sid    = LST_INVALID_SID;
 510         LASSERT(sfw_data.fw_session == NULL);
 511         return 0;
 512 }
 513
 514 static int
 515 sfw_debug_session (srpc_debug_reqst_t *request, srpc_debug_reply_t *reply)
 516 {
 517         sfw_session_t *sn = sfw_data.fw_session;
 518
 519         if (sn == NULL) {
 520                 reply->dbg_status = ESRCH;
 521                 reply->dbg_sid    = LST_INVALID_SID;
 522                 return 0;
 523         }
 524
 525         reply->dbg_status  = 0;
 526         reply->dbg_sid     = sn->sn_id;
 527         reply->dbg_timeout = sn->sn_timeout;
 528         if (strlcpy(reply->dbg_name, &sn->sn_name[0], sizeof(reply->dbg_name))
 529             >= sizeof(reply->dbg_name))
 530                 return -E2BIG;
 531
 532         return 0;
 533 }
 534
 535 static void
 536 sfw_test_rpc_fini (srpc_client_rpc_t *rpc)
 537 {
 538         sfw_test_unit_t     *tsu = rpc->crpc_priv;
 539         sfw_test_instance_t *tsi = tsu->tsu_instance;
 540
 541         /* Called with hold of tsi->tsi_lock */
 542         LASSERT (list_empty(&rpc->crpc_list));
 543         list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
 544 }
 545
 546 static inline int
 547 sfw_test_buffers(sfw_test_instance_t *tsi)
 548 {
 549         struct sfw_test_case    *tsc = sfw_find_test_case(tsi->tsi_service);
 550         struct srpc_service     *svc = tsc->tsc_srv_service;
 551         int                     nbuf;
 552
 553         nbuf = min(svc->sv_wi_total, tsi->tsi_loop) / svc->sv_ncpts;
 554         return max(SFW_TEST_WI_MIN, nbuf + SFW_TEST_WI_EXTRA);
 555 }
 556
 557 static int
 558 sfw_load_test(struct sfw_test_instance *tsi)
 559 {
 560         struct sfw_test_case    *tsc;
 561         struct srpc_service     *svc;
 562         int                     nbuf;
 563         int                     rc;
 564
 565         LASSERT(tsi != NULL);
 566         tsc = sfw_find_test_case(tsi->tsi_service);
 567         nbuf = sfw_test_buffers(tsi);
 568         LASSERT(tsc != NULL);
 569         svc = tsc->tsc_srv_service;
 570
 571         if (tsi->tsi_is_client) {
 572                 tsi->tsi_ops = tsc->tsc_cli_ops;
 573                 return 0;
 574         }
 575
 576         rc = srpc_service_add_buffers(svc, nbuf);
 577         if (rc != 0) {
 578                 CWARN("Failed to reserve enough buffers: "
 579                       "service %s, %d needed: %d\n", svc->sv_name, nbuf, rc);
 580                 /* NB: this error handler is not strictly correct, because
 581                  * it may release more buffers than already allocated,
 582                  * but it doesn't matter because request portal should
 583                  * be lazy portal and will grow buffers if necessary. */
 584                 srpc_service_remove_buffers(svc, nbuf);
 585                 return -ENOMEM;
 586         }
 587
 588         CDEBUG(D_NET, "Reserved %d buffers for test %s\n",
 589                nbuf * (srpc_serv_is_framework(svc) ?
 590                        1 : cfs_cpt_number(cfs_cpt_table)), svc->sv_name);
 591         return 0;
 592 }
 593
 594 static void
 595 sfw_unload_test(struct sfw_test_instance *tsi)
 596 {
 597         struct sfw_test_case *tsc = sfw_find_test_case(tsi->tsi_service);
 598
 599         LASSERT(tsc != NULL);
 600
 601         if (tsi->tsi_is_client)
 602                 return;
 603
 604         /* shrink buffers, because request portal is lazy portal
 605          * which can grow buffers at runtime so we may leave
 606          * some buffers behind, but never mind... */
 607         srpc_service_remove_buffers(tsc->tsc_srv_service,
 608                                     sfw_test_buffers(tsi));
 609         return;
 610 }
 611
 612 static void
 613 sfw_destroy_test_instance (sfw_test_instance_t *tsi)
 614 {
 615         srpc_client_rpc_t *rpc;
 616         sfw_test_unit_t   *tsu;
 617
 618         if (!tsi->tsi_is_client) goto clean;
 619
 620         tsi->tsi_ops->tso_fini(tsi);
 621
 622         LASSERT (!tsi->tsi_stopping);
 623         LASSERT (list_empty(&tsi->tsi_active_rpcs));
 624         LASSERT (!sfw_test_active(tsi));
 625
 626         while (!list_empty(&tsi->tsi_units)) {
 627                 tsu = list_entry(tsi->tsi_units.next,
 628                                      sfw_test_unit_t, tsu_list);
 629                 list_del(&tsu->tsu_list);
 630                 LIBCFS_FREE(tsu, sizeof(*tsu));
 631         }
 632
 633         while (!list_empty(&tsi->tsi_free_rpcs)) {
 634                 rpc = list_entry(tsi->tsi_free_rpcs.next,
 635                                      srpc_client_rpc_t, crpc_list);
 636                 list_del(&rpc->crpc_list);
 637                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
 638         }
 639
 640 clean:
 641         sfw_unload_test(tsi);
 642         LIBCFS_FREE(tsi, sizeof(*tsi));
 643         return;
 644 }
 645
 646 static void
 647 sfw_destroy_batch (sfw_batch_t *tsb)
 648 {
 649         sfw_test_instance_t *tsi;
 650
 651         LASSERT (!sfw_batch_active(tsb));
 652         LASSERT (list_empty(&tsb->bat_list));
 653
 654         while (!list_empty(&tsb->bat_tests)) {
 655                 tsi = list_entry(tsb->bat_tests.next,
 656                                      sfw_test_instance_t, tsi_list);
 657                 list_del_init(&tsi->tsi_list);
 658                 sfw_destroy_test_instance(tsi);
 659         }
 660
 661         LIBCFS_FREE(tsb, sizeof(sfw_batch_t));
 662         return;
 663 }
 664
 665 void
 666 sfw_destroy_session (sfw_session_t *sn)
 667 {
 668         sfw_batch_t *batch;
 669
 670         LASSERT (list_empty(&sn->sn_list));
 671         LASSERT (sn != sfw_data.fw_session);
 672
 673         while (!list_empty(&sn->sn_batches)) {
 674                 batch = list_entry(sn->sn_batches.next,
 675                                        sfw_batch_t, bat_list);
 676                 list_del_init(&batch->bat_list);
 677                 sfw_destroy_batch(batch);
 678         }
 679
 680         LIBCFS_FREE(sn, sizeof(*sn));
 681         atomic_dec(&sfw_data.fw_nzombies);
 682         return;
 683 }
 684
 685 static void
 686 sfw_unpack_addtest_req(srpc_msg_t *msg)
 687 {
 688         srpc_test_reqst_t *req = &msg->msg_body.tes_reqst;
 689
 690         LASSERT (msg->msg_type == SRPC_MSG_TEST_REQST);
 691         LASSERT (req->tsr_is_client);
 692
 693         if (msg->msg_magic == SRPC_MSG_MAGIC)
 694                 return; /* no flipping needed */
 695
 696         LASSERT (msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 697
 698         if (req->tsr_service == SRPC_SERVICE_BRW) {
 699                 if ((msg->msg_ses_feats & LST_FEAT_BULK_LEN) == 0) {
 700                         test_bulk_req_t *bulk = &req->tsr_u.bulk_v0;
 701
 702                         __swab32s(&bulk->blk_opc);
 703                         __swab32s(&bulk->blk_npg);
 704                         __swab32s(&bulk->blk_flags);
 705
 706                 } else {
 707                         test_bulk_req_v1_t *bulk = &req->tsr_u.bulk_v1;
 708
 709                         __swab16s(&bulk->blk_opc);
 710                         __swab16s(&bulk->blk_flags);
 711                         __swab32s(&bulk->blk_offset);
 712                         __swab32s(&bulk->blk_len);
 713                 }
 714
 715                 return;
 716         }
 717
 718         if (req->tsr_service == SRPC_SERVICE_PING) {
 719                 test_ping_req_t *ping = &req->tsr_u.ping;
 720
 721                 __swab32s(&ping->png_size);
 722                 __swab32s(&ping->png_flags);
 723                 return;
 724         }
 725
 726         LBUG ();
 727         return;
 728 }
 729
 730 static int
 731 sfw_add_test_instance (sfw_batch_t *tsb, srpc_server_rpc_t *rpc)
 732 {
 733         srpc_msg_t        *msg = &rpc->srpc_reqstbuf->buf_msg;
 734         srpc_test_reqst_t   *req = &msg->msg_body.tes_reqst;
 735         srpc_bulk_t      *bk = rpc->srpc_bulk;
 736         int               ndest = req->tsr_ndest;
 737         sfw_test_unit_t     *tsu;
 738         sfw_test_instance_t *tsi;
 739         int               i;
 740         int               rc;
 741
 742         LIBCFS_ALLOC(tsi, sizeof(*tsi));
 743         if (tsi == NULL) {
 744                 CERROR ("Can't allocate test instance for batch: %llu\n",
 745                         tsb->bat_id.bat_id);
 746                 return -ENOMEM;
 747         }
 748
 749         spin_lock_init(&tsi->tsi_lock);
 750         atomic_set(&tsi->tsi_nactive, 0);
 751         INIT_LIST_HEAD(&tsi->tsi_units);
 752         INIT_LIST_HEAD(&tsi->tsi_free_rpcs);
 753         INIT_LIST_HEAD(&tsi->tsi_active_rpcs);
 754
 755         tsi->tsi_stopping      = 0;
 756         tsi->tsi_batch   = tsb;
 757         tsi->tsi_loop     = req->tsr_loop;
 758         tsi->tsi_concur = req->tsr_concur;
 759         tsi->tsi_service       = req->tsr_service;
 760         tsi->tsi_is_client     = !!(req->tsr_is_client);
 761         tsi->tsi_stoptsu_onerr = !!(req->tsr_stop_onerr);
 762
 763         rc = sfw_load_test(tsi);
 764         if (rc != 0) {
 765                 LIBCFS_FREE(tsi, sizeof(*tsi));
 766                 return rc;
 767         }
 768
 769         LASSERT (!sfw_batch_active(tsb));
 770
 771         if (!tsi->tsi_is_client) {
 772                 /* it's test server, just add it to tsb */
 773                 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
 774                 return 0;
 775         }
 776
 777         LASSERT (bk != NULL);
 778         LASSERT (bk->bk_niov * SFW_ID_PER_PAGE >= (unsigned int)ndest);
 779         LASSERT((unsigned int)bk->bk_len >=
 780                 sizeof(lnet_process_id_packed_t) * ndest);
 781
 782         sfw_unpack_addtest_req(msg);
 783         memcpy(&tsi->tsi_u, &req->tsr_u, sizeof(tsi->tsi_u));
 784
 785         for (i = 0; i < ndest; i++) {
 786                 lnet_process_id_packed_t *dests;
 787                 lnet_process_id_packed_t  id;
 788                 int                    j;
 789
 790                 dests = page_address(bk->bk_iovs[i / SFW_ID_PER_PAGE].kiov_page);
 791                 LASSERT (dests != NULL);  /* my pages are within KVM always */
 792                 id = dests[i % SFW_ID_PER_PAGE];
 793                 if (msg->msg_magic != SRPC_MSG_MAGIC)
 794                         sfw_unpack_id(id);
 795
 796                 for (j = 0; j < tsi->tsi_concur; j++) {
 797                         LIBCFS_ALLOC(tsu, sizeof(sfw_test_unit_t));
 798                         if (tsu == NULL) {
 799                                 rc = -ENOMEM;
 800                                 CERROR ("Can't allocate tsu for %d\n",
 801                                         tsi->tsi_service);
 802                                 goto error;
 803                         }
 804
 805                         tsu->tsu_dest.nid = id.nid;
 806                         tsu->tsu_dest.pid = id.pid;
 807                         tsu->tsu_instance = tsi;
 808                         tsu->tsu_private  = NULL;
 809                         list_add_tail(&tsu->tsu_list, &tsi->tsi_units);
 810                 }
 811         }
 812
 813         rc = tsi->tsi_ops->tso_init(tsi);
 814         if (rc == 0) {
 815                 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
 816                 return 0;
 817         }
 818
 819 error:
 820         LASSERT (rc != 0);
 821         sfw_destroy_test_instance(tsi);
 822         return rc;
 823 }
 824
 825 static void
 826 sfw_test_unit_done (sfw_test_unit_t *tsu)
 827 {
 828         sfw_test_instance_t *tsi = tsu->tsu_instance;
 829         sfw_batch_t      *tsb = tsi->tsi_batch;
 830         sfw_session_t       *sn = tsb->bat_session;
 831
 832         LASSERT (sfw_test_active(tsi));
 833
 834         if (!atomic_dec_and_test(&tsi->tsi_nactive))
 835                 return;
 836
 837         /* the test instance is done */
 838         spin_lock(&tsi->tsi_lock);
 839
 840         tsi->tsi_stopping = 0;
 841
 842         spin_unlock(&tsi->tsi_lock);
 843
 844         spin_lock(&sfw_data.fw_lock);
 845
 846         if (!atomic_dec_and_test(&tsb->bat_nactive) ||/* tsb still active */
 847             sn == sfw_data.fw_session) {                  /* sn also active */
 848                 spin_unlock(&sfw_data.fw_lock);
 849                 return;
 850         }
 851
 852         LASSERT (!list_empty(&sn->sn_list)); /* I'm a zombie! */
 853
 854         list_for_each_entry (tsb, &sn->sn_batches, bat_list) {
 855                 if (sfw_batch_active(tsb)) {
 856                         spin_unlock(&sfw_data.fw_lock);
 857                         return;
 858                 }
 859         }
 860
 861         list_del_init(&sn->sn_list);
 862         spin_unlock(&sfw_data.fw_lock);
 863
 864         sfw_destroy_session(sn);
 865         return;
 866 }
 867
 868 static void
 869 sfw_test_rpc_done (srpc_client_rpc_t *rpc)
 870 {
 871         sfw_test_unit_t     *tsu = rpc->crpc_priv;
 872         sfw_test_instance_t *tsi = tsu->tsu_instance;
 873         int               done = 0;
 874
 875         tsi->tsi_ops->tso_done_rpc(tsu, rpc);
 876
 877         spin_lock(&tsi->tsi_lock);
 878
 879         LASSERT (sfw_test_active(tsi));
 880         LASSERT (!list_empty(&rpc->crpc_list));
 881
 882         list_del_init(&rpc->crpc_list);
 883
 884         /* batch is stopping or loop is done or get error */
 885         if (tsi->tsi_stopping ||
 886             tsu->tsu_loop == 0 ||
 887             (rpc->crpc_status != 0 && tsi->tsi_stoptsu_onerr))
 888                 done = 1;
 889
 890         /* dec ref for poster */
 891         srpc_client_rpc_decref(rpc);
 892
 893         spin_unlock(&tsi->tsi_lock);
 894
 895         if (!done) {
 896                 swi_schedule_workitem(&tsu->tsu_worker);
 897                 return;
 898         }
 899
 900         sfw_test_unit_done(tsu);
 901         return;
 902 }
 903
 904 int
 905 sfw_create_test_rpc(sfw_test_unit_t *tsu, lnet_process_id_t peer,
 906                     unsigned features, int nblk, int blklen,
 907                     srpc_client_rpc_t **rpcpp)
 908 {
 909         srpc_client_rpc_t   *rpc = NULL;
 910         sfw_test_instance_t *tsi = tsu->tsu_instance;
 911
 912         spin_lock(&tsi->tsi_lock);
 913
 914         LASSERT (sfw_test_active(tsi));
 915
 916         if (!list_empty(&tsi->tsi_free_rpcs)) {
 917                 /* pick request from buffer */
 918                 rpc = list_entry(tsi->tsi_free_rpcs.next,
 919                                      srpc_client_rpc_t, crpc_list);
 920                 LASSERT (nblk == rpc->crpc_bulk.bk_niov);
 921                 list_del_init(&rpc->crpc_list);
 922         }
 923
 924         spin_unlock(&tsi->tsi_lock);
 925
 926         if (rpc == NULL) {
 927                 rpc = srpc_create_client_rpc(peer, tsi->tsi_service, nblk,
 928                                              blklen, sfw_test_rpc_done,
 929                                              sfw_test_rpc_fini, tsu);
 930         } else {
 931                 srpc_init_client_rpc(rpc, peer, tsi->tsi_service, nblk,
 932                                      blklen, sfw_test_rpc_done,
 933                                      sfw_test_rpc_fini, tsu);
 934         }
 935
 936         if (rpc == NULL) {
 937                 CERROR("Can't create rpc for test %d\n", tsi->tsi_service);
 938                 return -ENOMEM;
 939         }
 940
 941         rpc->crpc_reqstmsg.msg_ses_feats = features;
 942         *rpcpp = rpc;
 943
 944         return 0;
 945 }
 946
 947 static int
 948 sfw_run_test (swi_workitem_t *wi)
 949 {
 950         sfw_test_unit_t     *tsu = wi->swi_workitem.wi_data;
 951         sfw_test_instance_t *tsi = tsu->tsu_instance;
 952         srpc_client_rpc_t   *rpc = NULL;
 953
 954         LASSERT (wi == &tsu->tsu_worker);
 955
 956         if (tsi->tsi_ops->tso_prep_rpc(tsu, tsu->tsu_dest, &rpc) != 0) {
 957                 LASSERT (rpc == NULL);
 958                 goto test_done;
 959         }
 960
 961         LASSERT (rpc != NULL);
 962
 963         spin_lock(&tsi->tsi_lock);
 964
 965         if (tsi->tsi_stopping) {
 966                 list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
 967                 spin_unlock(&tsi->tsi_lock);
 968                 goto test_done;
 969         }
 970
 971         if (tsu->tsu_loop > 0)
 972                 tsu->tsu_loop--;
 973
 974         list_add_tail(&rpc->crpc_list, &tsi->tsi_active_rpcs);
 975         spin_unlock(&tsi->tsi_lock);
 976
 977         rpc->crpc_timeout = rpc_timeout;
 978
 979         spin_lock(&rpc->crpc_lock);
 980         srpc_post_rpc(rpc);
 981         spin_unlock(&rpc->crpc_lock);
 982         return 0;
 983
 984 test_done:
 985         /*
 986          * No one can schedule me now since:
 987          * - previous RPC, if any, has done and
 988          * - no new RPC is initiated.
 989          * - my batch is still active; no one can run it again now.
 990          * Cancel pending schedules and prevent future schedule attempts:
 991          */
 992         swi_exit_workitem(wi);
 993         sfw_test_unit_done(tsu);
 994         return 1;
 995 }
 996
 997 static int
 998 sfw_run_batch (sfw_batch_t *tsb)
 999 {
1000         swi_workitem_t      *wi;
1001         sfw_test_unit_t     *tsu;
1002         sfw_test_instance_t *tsi;
1003
1004         if (sfw_batch_active(tsb)) {
1005                 CDEBUG(D_NET, "Batch already active: %llu (%d)\n",
1006                        tsb->bat_id.bat_id, atomic_read(&tsb->bat_nactive));
1007                 return 0;
1008         }
1009
1010         list_for_each_entry (tsi, &tsb->bat_tests, tsi_list) {
1011                 if (!tsi->tsi_is_client) /* skip server instances */
1012                         continue;
1013
1014                 LASSERT (!tsi->tsi_stopping);
1015                 LASSERT (!sfw_test_active(tsi));
1016
1017                 atomic_inc(&tsb->bat_nactive);
1018
1019                 list_for_each_entry (tsu, &tsi->tsi_units, tsu_list) {
1020                         atomic_inc(&tsi->tsi_nactive);
1021                         tsu->tsu_loop = tsi->tsi_loop;
1022                         wi = &tsu->tsu_worker;
1023                         swi_init_workitem(wi, tsu, sfw_run_test,
1024                                           lst_sched_test[\
1025                                           lnet_cpt_of_nid(tsu->tsu_dest.nid)]);
1026                         swi_schedule_workitem(wi);
1027                 }
1028         }
1029
1030         return 0;
1031 }
1032
1033 int
1034 sfw_stop_batch (sfw_batch_t *tsb, int force)
1035 {
1036         sfw_test_instance_t *tsi;
1037         srpc_client_rpc_t   *rpc;
1038
1039         if (!sfw_batch_active(tsb)) {
1040                 CDEBUG(D_NET, "Batch %llu inactive\n", tsb->bat_id.bat_id);
1041                 return 0;
1042         }
1043
1044         list_for_each_entry (tsi, &tsb->bat_tests, tsi_list) {
1045                 spin_lock(&tsi->tsi_lock);
1046
1047                 if (!tsi->tsi_is_client ||
1048                     !sfw_test_active(tsi) || tsi->tsi_stopping) {
1049                         spin_unlock(&tsi->tsi_lock);
1050                         continue;
1051                 }
1052
1053                 tsi->tsi_stopping = 1;
1054
1055                 if (!force) {
1056                         spin_unlock(&tsi->tsi_lock);
1057                         continue;
1058                 }
1059
1060                 /* abort launched rpcs in the test */
1061                 list_for_each_entry(rpc, &tsi->tsi_active_rpcs, crpc_list) {
1062                         spin_lock(&rpc->crpc_lock);
1063
1064                         srpc_abort_rpc(rpc, -EINTR);
1065
1066                         spin_unlock(&rpc->crpc_lock);
1067                 }
1068
1069                 spin_unlock(&tsi->tsi_lock);
1070         }
1071
1072         return 0;
1073 }
1074
1075 static int
1076 sfw_query_batch (sfw_batch_t *tsb, int testidx, srpc_batch_reply_t *reply)
1077 {
1078         sfw_test_instance_t *tsi;
1079
1080         if (testidx < 0)
1081                 return -EINVAL;
1082
1083         if (testidx == 0) {
1084                 reply->bar_active = atomic_read(&tsb->bat_nactive);
1085                 return 0;
1086         }
1087
1088         list_for_each_entry (tsi, &tsb->bat_tests, tsi_list) {
1089                 if (testidx-- > 1)
1090                         continue;
1091
1092                 reply->bar_active = atomic_read(&tsi->tsi_nactive);
1093                 return 0;
1094         }
1095
1096         return -ENOENT;
1097 }
1098
1099 void
1100 sfw_free_pages (srpc_server_rpc_t *rpc)
1101 {
1102         srpc_free_bulk(rpc->srpc_bulk);
1103         rpc->srpc_bulk = NULL;
1104 }
1105
1106 int
1107 sfw_alloc_pages(struct srpc_server_rpc *rpc, int cpt, int npages, int len,
1108                 int sink)
1109 {
1110         LASSERT(rpc->srpc_bulk == NULL);
1111         LASSERT(npages > 0 && npages <= LNET_MAX_IOV);
1112
1113         rpc->srpc_bulk = srpc_alloc_bulk(cpt, npages, len, sink);
1114         if (rpc->srpc_bulk == NULL)
1115                 return -ENOMEM;
1116
1117         return 0;
1118 }
1119
1120 static int
1121 sfw_add_test (srpc_server_rpc_t *rpc)
1122 {
1123         sfw_session_t     *sn = sfw_data.fw_session;
1124         srpc_test_reply_t *reply = &rpc->srpc_replymsg.msg_body.tes_reply;
1125         srpc_test_reqst_t *request;
1126         int             rc;
1127         sfw_batch_t       *bat;
1128
1129         request = &rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst;
1130         reply->tsr_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
1131
1132         if (request->tsr_loop == 0 ||
1133             request->tsr_concur == 0 ||
1134             request->tsr_sid.ses_nid == LNET_NID_ANY ||
1135             request->tsr_ndest > SFW_MAX_NDESTS ||
1136             (request->tsr_is_client && request->tsr_ndest == 0) ||
1137             request->tsr_concur > SFW_MAX_CONCUR ||
1138             request->tsr_service > SRPC_SERVICE_MAX_ID ||
1139             request->tsr_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID) {
1140                 reply->tsr_status = EINVAL;
1141                 return 0;
1142         }
1143
1144         if (sn == NULL || !sfw_sid_equal(request->tsr_sid, sn->sn_id) ||
1145             sfw_find_test_case(request->tsr_service) == NULL) {
1146                 reply->tsr_status = ENOENT;
1147                 return 0;
1148         }
1149
1150         bat = sfw_bid2batch(request->tsr_bid);
1151         if (bat == NULL) {
1152                 CERROR ("Dropping RPC (%s) from %s under memory pressure.\n",
1153                         rpc->srpc_scd->scd_svc->sv_name,
1154                         libcfs_id2str(rpc->srpc_peer));
1155                 return -ENOMEM;
1156         }
1157
1158         if (sfw_batch_active(bat)) {
1159                 reply->tsr_status = EBUSY;
1160                 return 0;
1161         }
1162
1163         if (request->tsr_is_client && rpc->srpc_bulk == NULL) {
1164                 /* rpc will be resumed later in sfw_bulk_ready */
1165                 int     npg = sfw_id_pages(request->tsr_ndest);
1166                 int     len;
1167
1168                 if ((sn->sn_features & LST_FEAT_BULK_LEN) == 0) {
1169                         len = npg * PAGE_CACHE_SIZE;
1170
1171                 } else  {
1172                         len = sizeof(lnet_process_id_packed_t) *
1173                               request->tsr_ndest;
1174                 }
1175
1176                 return sfw_alloc_pages(rpc, CFS_CPT_ANY, npg, len, 1);
1177         }
1178
1179         rc = sfw_add_test_instance(bat, rpc);
1180         CDEBUG (rc == 0 ? D_NET : D_WARNING,
1181                 "%s test: sv %d %s, loop %d, concur %d, ndest %d\n",
1182                 rc == 0 ? "Added" : "Failed to add", request->tsr_service,
1183                 request->tsr_is_client ? "client" : "server",
1184                 request->tsr_loop, request->tsr_concur, request->tsr_ndest);
1185
1186         reply->tsr_status = (rc < 0) ? -rc : rc;
1187         return 0;
1188 }
1189
1190 static int
1191 sfw_control_batch (srpc_batch_reqst_t *request, srpc_batch_reply_t *reply)
1192 {
1193         sfw_session_t *sn = sfw_data.fw_session;
1194         int         rc = 0;
1195         sfw_batch_t   *bat;
1196
1197         reply->bar_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
1198
1199         if (sn == NULL || !sfw_sid_equal(request->bar_sid, sn->sn_id)) {
1200                 reply->bar_status = ESRCH;
1201                 return 0;
1202         }
1203
1204         bat = sfw_find_batch(request->bar_bid);
1205         if (bat == NULL) {
1206                 reply->bar_status = ENOENT;
1207                 return 0;
1208         }
1209
1210         switch (request->bar_opc) {
1211         case SRPC_BATCH_OPC_RUN:
1212                 rc = sfw_run_batch(bat);
1213                 break;
1214
1215         case SRPC_BATCH_OPC_STOP:
1216                 rc = sfw_stop_batch(bat, request->bar_arg);
1217                 break;
1218
1219         case SRPC_BATCH_OPC_QUERY:
1220                 rc = sfw_query_batch(bat, request->bar_testidx, reply);
1221                 break;
1222
1223         default:
1224                 return -EINVAL; /* drop it */
1225         }
1226
1227         reply->bar_status = (rc < 0) ? -rc : rc;
1228         return 0;
1229 }
1230
1231 static int
1232 sfw_handle_server_rpc(struct srpc_server_rpc *rpc)
1233 {
1234         struct srpc_service     *sv = rpc->srpc_scd->scd_svc;
1235         srpc_msg_t     *reply   = &rpc->srpc_replymsg;
1236         srpc_msg_t     *request = &rpc->srpc_reqstbuf->buf_msg;
1237         unsigned        features = LST_FEATS_MASK;
1238         int             rc = 0;
1239
1240         LASSERT(sfw_data.fw_active_srpc == NULL);
1241         LASSERT(sv->sv_id <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1242
1243         spin_lock(&sfw_data.fw_lock);
1244
1245         if (sfw_data.fw_shuttingdown) {
1246                 spin_unlock(&sfw_data.fw_lock);
1247                 return -ESHUTDOWN;
1248         }
1249
1250         /* Remove timer to avoid racing with it or expiring active session */
1251         if (sfw_del_session_timer() != 0) {
1252                 CERROR("Dropping RPC (%s) from %s: racing with expiry timer.",
1253                        sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1254                 spin_unlock(&sfw_data.fw_lock);
1255                 return -EAGAIN;
1256         }
1257
1258         sfw_data.fw_active_srpc = rpc;
1259         spin_unlock(&sfw_data.fw_lock);
1260
1261         sfw_unpack_message(request);
1262         LASSERT(request->msg_type == srpc_service2request(sv->sv_id));
1263
1264         /* rpc module should have checked this */
1265         LASSERT(request->msg_version == SRPC_MSG_VERSION);
1266
1267         if (sv->sv_id != SRPC_SERVICE_MAKE_SESSION &&
1268             sv->sv_id != SRPC_SERVICE_DEBUG) {
1269                 sfw_session_t *sn = sfw_data.fw_session;
1270
1271                 if (sn != NULL &&
1272                     sn->sn_features != request->msg_ses_feats) {
1273                         CNETERR("Features of framework RPC don't match "
1274                                 "features of current session: %x/%x\n",
1275                                 request->msg_ses_feats, sn->sn_features);
1276                         reply->msg_body.reply.status = EPROTO;
1277                         reply->msg_body.reply.sid    = sn->sn_id;
1278                         goto out;
1279                 }
1280
1281         } else if ((request->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
1282                 /* NB: at this point, old version will ignore features and
1283                  * create new session anyway, so console should be able
1284                  * to handle this */
1285                 reply->msg_body.reply.status = EPROTO;
1286                 goto out;
1287         }
1288
1289         switch (sv->sv_id) {
1290         default:
1291                 LBUG ();
1292         case SRPC_SERVICE_TEST:
1293                 rc = sfw_add_test(rpc);
1294                 break;
1295
1296         case SRPC_SERVICE_BATCH:
1297                 rc = sfw_control_batch(&request->msg_body.bat_reqst,
1298                                        &reply->msg_body.bat_reply);
1299                 break;
1300
1301         case SRPC_SERVICE_QUERY_STAT:
1302                 rc = sfw_get_stats(&request->msg_body.stat_reqst,
1303                                    &reply->msg_body.stat_reply);
1304                 break;
1305
1306         case SRPC_SERVICE_DEBUG:
1307                 rc = sfw_debug_session(&request->msg_body.dbg_reqst,
1308                                        &reply->msg_body.dbg_reply);
1309                 break;
1310
1311         case SRPC_SERVICE_MAKE_SESSION:
1312                 rc = sfw_make_session(&request->msg_body.mksn_reqst,
1313                                       &reply->msg_body.mksn_reply);
1314                 break;
1315
1316         case SRPC_SERVICE_REMOVE_SESSION:
1317                 rc = sfw_remove_session(&request->msg_body.rmsn_reqst,
1318                                         &reply->msg_body.rmsn_reply);
1319                 break;
1320         }
1321
1322         if (sfw_data.fw_session != NULL)
1323                 features = sfw_data.fw_session->sn_features;
1324  out:
1325         reply->msg_ses_feats = features;
1326         rpc->srpc_done = sfw_server_rpc_done;
1327         spin_lock(&sfw_data.fw_lock);
1328
1329         if (!sfw_data.fw_shuttingdown)
1330                 sfw_add_session_timer();
1331
1332         sfw_data.fw_active_srpc = NULL;
1333         spin_unlock(&sfw_data.fw_lock);
1334         return rc;
1335 }
1336
1337 static int
1338 sfw_bulk_ready(struct srpc_server_rpc *rpc, int status)
1339 {
1340         struct srpc_service     *sv = rpc->srpc_scd->scd_svc;
1341         int                     rc;
1342
1343         LASSERT(rpc->srpc_bulk != NULL);
1344         LASSERT(sv->sv_id == SRPC_SERVICE_TEST);
1345         LASSERT(sfw_data.fw_active_srpc == NULL);
1346         LASSERT(rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst.tsr_is_client);
1347
1348         spin_lock(&sfw_data.fw_lock);
1349
1350         if (status != 0) {
1351                 CERROR("Bulk transfer failed for RPC: "
1352                        "service %s, peer %s, status %d\n",
1353                        sv->sv_name, libcfs_id2str(rpc->srpc_peer), status);
1354                 spin_unlock(&sfw_data.fw_lock);
1355                 return -EIO;
1356         }
1357
1358         if (sfw_data.fw_shuttingdown) {
1359                 spin_unlock(&sfw_data.fw_lock);
1360                 return -ESHUTDOWN;
1361         }
1362
1363         if (sfw_del_session_timer() != 0) {
1364                 CERROR("Dropping RPC (%s) from %s: racing with expiry timer",
1365                        sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1366                 spin_unlock(&sfw_data.fw_lock);
1367                 return -EAGAIN;
1368         }
1369
1370         sfw_data.fw_active_srpc = rpc;
1371         spin_unlock(&sfw_data.fw_lock);
1372
1373         rc = sfw_add_test(rpc);
1374
1375         spin_lock(&sfw_data.fw_lock);
1376
1377         if (!sfw_data.fw_shuttingdown)
1378                 sfw_add_session_timer();
1379
1380         sfw_data.fw_active_srpc = NULL;
1381         spin_unlock(&sfw_data.fw_lock);
1382         return rc;
1383 }
1384
1385 srpc_client_rpc_t *
1386 sfw_create_rpc(lnet_process_id_t peer, int service,
1387                unsigned features, int nbulkiov, int bulklen,
1388                void (*done)(srpc_client_rpc_t *), void *priv)
1389 {
1390         srpc_client_rpc_t *rpc = NULL;
1391
1392         spin_lock(&sfw_data.fw_lock);
1393
1394         LASSERT (!sfw_data.fw_shuttingdown);
1395         LASSERT (service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1396
1397         if (nbulkiov == 0 && !list_empty(&sfw_data.fw_zombie_rpcs)) {
1398                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1399                                      srpc_client_rpc_t, crpc_list);
1400                 list_del(&rpc->crpc_list);
1401
1402                 srpc_init_client_rpc(rpc, peer, service, 0, 0,
1403                                      done, sfw_client_rpc_fini, priv);
1404         }
1405
1406         spin_unlock(&sfw_data.fw_lock);
1407
1408         if (rpc == NULL) {
1409                 rpc = srpc_create_client_rpc(peer, service,
1410                                              nbulkiov, bulklen, done,
1411                                              nbulkiov != 0 ?  NULL :
1412                                              sfw_client_rpc_fini,
1413                                              priv);
1414         }
1415
1416         if (rpc != NULL) /* "session" is concept in framework */
1417                 rpc->crpc_reqstmsg.msg_ses_feats = features;
1418
1419         return rpc;
1420 }
1421
1422 void
1423 sfw_unpack_message (srpc_msg_t *msg)
1424 {
1425         if (msg->msg_magic == SRPC_MSG_MAGIC)
1426                 return; /* no flipping needed */
1427
1428         /* srpc module should guarantee I wouldn't get crap */
1429         LASSERT (msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
1430
1431         if (msg->msg_type == SRPC_MSG_STAT_REQST) {
1432                 srpc_stat_reqst_t *req = &msg->msg_body.stat_reqst;
1433
1434                 __swab32s(&req->str_type);
1435                 __swab64s(&req->str_rpyid);
1436                 sfw_unpack_sid(req->str_sid);
1437                 return;
1438         }
1439
1440         if (msg->msg_type == SRPC_MSG_STAT_REPLY) {
1441                 srpc_stat_reply_t *rep = &msg->msg_body.stat_reply;
1442
1443                 __swab32s(&rep->str_status);
1444                 sfw_unpack_sid(rep->str_sid);
1445                 sfw_unpack_fw_counters(rep->str_fw);
1446                 sfw_unpack_rpc_counters(rep->str_rpc);
1447                 sfw_unpack_lnet_counters(rep->str_lnet);
1448                 return;
1449         }
1450
1451         if (msg->msg_type == SRPC_MSG_MKSN_REQST) {
1452                 srpc_mksn_reqst_t *req = &msg->msg_body.mksn_reqst;
1453
1454                 __swab64s(&req->mksn_rpyid);
1455                 __swab32s(&req->mksn_force);
1456                 sfw_unpack_sid(req->mksn_sid);
1457                 return;
1458         }
1459
1460         if (msg->msg_type == SRPC_MSG_MKSN_REPLY) {
1461                 srpc_mksn_reply_t *rep = &msg->msg_body.mksn_reply;
1462
1463                 __swab32s(&rep->mksn_status);
1464                 __swab32s(&rep->mksn_timeout);
1465                 sfw_unpack_sid(rep->mksn_sid);
1466                 return;
1467         }
1468
1469         if (msg->msg_type == SRPC_MSG_RMSN_REQST) {
1470                 srpc_rmsn_reqst_t *req = &msg->msg_body.rmsn_reqst;
1471
1472                 __swab64s(&req->rmsn_rpyid);
1473                 sfw_unpack_sid(req->rmsn_sid);
1474                 return;
1475         }
1476
1477         if (msg->msg_type == SRPC_MSG_RMSN_REPLY) {
1478                 srpc_rmsn_reply_t *rep = &msg->msg_body.rmsn_reply;
1479
1480                 __swab32s(&rep->rmsn_status);
1481                 sfw_unpack_sid(rep->rmsn_sid);
1482                 return;
1483         }
1484
1485         if (msg->msg_type == SRPC_MSG_DEBUG_REQST) {
1486                 srpc_debug_reqst_t *req = &msg->msg_body.dbg_reqst;
1487
1488                 __swab64s(&req->dbg_rpyid);
1489                 __swab32s(&req->dbg_flags);
1490                 sfw_unpack_sid(req->dbg_sid);
1491                 return;
1492         }
1493
1494         if (msg->msg_type == SRPC_MSG_DEBUG_REPLY) {
1495                 srpc_debug_reply_t *rep = &msg->msg_body.dbg_reply;
1496
1497                 __swab32s(&rep->dbg_nbatch);
1498                 __swab32s(&rep->dbg_timeout);
1499                 sfw_unpack_sid(rep->dbg_sid);
1500                 return;
1501         }
1502
1503         if (msg->msg_type == SRPC_MSG_BATCH_REQST) {
1504                 srpc_batch_reqst_t *req = &msg->msg_body.bat_reqst;
1505
1506                 __swab32s(&req->bar_opc);
1507                 __swab64s(&req->bar_rpyid);
1508                 __swab32s(&req->bar_testidx);
1509                 __swab32s(&req->bar_arg);
1510                 sfw_unpack_sid(req->bar_sid);
1511                 __swab64s(&req->bar_bid.bat_id);
1512                 return;
1513         }
1514
1515         if (msg->msg_type == SRPC_MSG_BATCH_REPLY) {
1516                 srpc_batch_reply_t *rep = &msg->msg_body.bat_reply;
1517
1518                 __swab32s(&rep->bar_status);
1519                 sfw_unpack_sid(rep->bar_sid);
1520                 return;
1521         }
1522
1523         if (msg->msg_type == SRPC_MSG_TEST_REQST) {
1524                 srpc_test_reqst_t *req = &msg->msg_body.tes_reqst;
1525
1526                 __swab64s(&req->tsr_rpyid);
1527                 __swab64s(&req->tsr_bulkid);
1528                 __swab32s(&req->tsr_loop);
1529                 __swab32s(&req->tsr_ndest);
1530                 __swab32s(&req->tsr_concur);
1531                 __swab32s(&req->tsr_service);
1532                 sfw_unpack_sid(req->tsr_sid);
1533                 __swab64s(&req->tsr_bid.bat_id);
1534                 return;
1535         }
1536
1537         if (msg->msg_type == SRPC_MSG_TEST_REPLY) {
1538                 srpc_test_reply_t *rep = &msg->msg_body.tes_reply;
1539
1540                 __swab32s(&rep->tsr_status);
1541                 sfw_unpack_sid(rep->tsr_sid);
1542                 return;
1543         }
1544
1545         if (msg->msg_type == SRPC_MSG_JOIN_REQST) {
1546                 srpc_join_reqst_t *req = &msg->msg_body.join_reqst;
1547
1548                 __swab64s(&req->join_rpyid);
1549                 sfw_unpack_sid(req->join_sid);
1550                 return;
1551         }
1552
1553         if (msg->msg_type == SRPC_MSG_JOIN_REPLY) {
1554                 srpc_join_reply_t *rep = &msg->msg_body.join_reply;
1555
1556                 __swab32s(&rep->join_status);
1557                 __swab32s(&rep->join_timeout);
1558                 sfw_unpack_sid(rep->join_sid);
1559                 return;
1560         }
1561
1562         LBUG ();
1563         return;
1564 }
1565
1566 void
1567 sfw_abort_rpc (srpc_client_rpc_t *rpc)
1568 {
1569         LASSERT(atomic_read(&rpc->crpc_refcount) > 0);
1570         LASSERT(rpc->crpc_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1571
1572         spin_lock(&rpc->crpc_lock);
1573         srpc_abort_rpc(rpc, -EINTR);
1574         spin_unlock(&rpc->crpc_lock);
1575         return;
1576 }
1577
1578 void
1579 sfw_post_rpc (srpc_client_rpc_t *rpc)
1580 {
1581         spin_lock(&rpc->crpc_lock);
1582
1583         LASSERT (!rpc->crpc_closed);
1584         LASSERT (!rpc->crpc_aborted);
1585         LASSERT (list_empty(&rpc->crpc_list));
1586         LASSERT (!sfw_data.fw_shuttingdown);
1587
1588         rpc->crpc_timeout = rpc_timeout;
1589         srpc_post_rpc(rpc);
1590
1591         spin_unlock(&rpc->crpc_lock);
1592         return;
1593 }
1594
1595 static srpc_service_t sfw_services[] = {
1596         {
1597                 /* sv_id */    SRPC_SERVICE_DEBUG,
1598                 /* sv_name */  "debug",
1599                 0
1600         },
1601         {
1602                 /* sv_id */    SRPC_SERVICE_QUERY_STAT,
1603                 /* sv_name */  "query stats",
1604                 0
1605         },
1606         {
1607                 /* sv_id */    SRPC_SERVICE_MAKE_SESSION,
1608                 /* sv_name */  "make session",
1609                 0
1610         },
1611         {
1612                 /* sv_id */    SRPC_SERVICE_REMOVE_SESSION,
1613                 /* sv_name */  "remove session",
1614                 0
1615         },
1616         {
1617                 /* sv_id */    SRPC_SERVICE_BATCH,
1618                 /* sv_name */  "batch service",
1619                 0
1620         },
1621         {
1622                 /* sv_id */    SRPC_SERVICE_TEST,
1623                 /* sv_name */  "test service",
1624                 0
1625         },
1626         {
1627                 /* sv_id */    0,
1628                 /* sv_name */  NULL,
1629                 0
1630         }
1631 };
1632
1633 extern sfw_test_client_ops_t ping_test_client;
1634 extern srpc_service_t   ping_test_service;
1635 extern void ping_init_test_client(void);
1636 extern void ping_init_test_service(void);
1637
1638 extern sfw_test_client_ops_t brw_test_client;
1639 extern srpc_service_t   brw_test_service;
1640 extern void brw_init_test_client(void);
1641 extern void brw_init_test_service(void);
1642
1643
1644 int
1645 sfw_startup (void)
1646 {
1647         int           i;
1648         int           rc;
1649         int           error;
1650         srpc_service_t  *sv;
1651         sfw_test_case_t *tsc;
1652
1653
1654         if (session_timeout < 0) {
1655                 CERROR ("Session timeout must be non-negative: %d\n",
1656                         session_timeout);
1657                 return -EINVAL;
1658         }
1659
1660         if (rpc_timeout < 0) {
1661                 CERROR ("RPC timeout must be non-negative: %d\n",
1662                         rpc_timeout);
1663                 return -EINVAL;
1664         }
1665
1666         if (session_timeout == 0)
1667                 CWARN ("Zero session_timeout specified "
1668                        "- test sessions never expire.\n");
1669
1670         if (rpc_timeout == 0)
1671                 CWARN ("Zero rpc_timeout specified "
1672                        "- test RPC never expire.\n");
1673
1674         memset(&sfw_data, 0, sizeof(struct smoketest_framework));
1675
1676         sfw_data.fw_session     = NULL;
1677         sfw_data.fw_active_srpc = NULL;
1678         spin_lock_init(&sfw_data.fw_lock);
1679         atomic_set(&sfw_data.fw_nzombies, 0);
1680         INIT_LIST_HEAD(&sfw_data.fw_tests);
1681         INIT_LIST_HEAD(&sfw_data.fw_zombie_rpcs);
1682         INIT_LIST_HEAD(&sfw_data.fw_zombie_sessions);
1683
1684         brw_init_test_client();
1685         brw_init_test_service();
1686         rc = sfw_register_test(&brw_test_service, &brw_test_client);
1687         LASSERT (rc == 0);
1688
1689         ping_init_test_client();
1690         ping_init_test_service();
1691         rc = sfw_register_test(&ping_test_service, &ping_test_client);
1692         LASSERT (rc == 0);
1693
1694         error = 0;
1695         list_for_each_entry (tsc, &sfw_data.fw_tests, tsc_list) {
1696                 sv = tsc->tsc_srv_service;
1697
1698                 rc = srpc_add_service(sv);
1699                 LASSERT (rc != -EBUSY);
1700                 if (rc != 0) {
1701                         CWARN ("Failed to add %s service: %d\n",
1702                                sv->sv_name, rc);
1703                         error = rc;
1704                 }
1705         }
1706
1707         for (i = 0; ; i++) {
1708                 sv = &sfw_services[i];
1709                 if (sv->sv_name == NULL) break;
1710
1711                 sv->sv_bulk_ready = NULL;
1712                 sv->sv_handler    = sfw_handle_server_rpc;
1713                 sv->sv_wi_total   = SFW_FRWK_WI_MAX;
1714                 if (sv->sv_id == SRPC_SERVICE_TEST)
1715                         sv->sv_bulk_ready = sfw_bulk_ready;
1716
1717                 rc = srpc_add_service(sv);
1718                 LASSERT (rc != -EBUSY);
1719                 if (rc != 0) {
1720                         CWARN ("Failed to add %s service: %d\n",
1721                                sv->sv_name, rc);
1722                         error = rc;
1723                 }
1724
1725                 /* about to sfw_shutdown, no need to add buffer */
1726                 if (error) continue;
1727
1728                 rc = srpc_service_add_buffers(sv, sv->sv_wi_total);
1729                 if (rc != 0) {
1730                         CWARN("Failed to reserve enough buffers: "
1731                               "service %s, %d needed: %d\n",
1732                               sv->sv_name, sv->sv_wi_total, rc);
1733                         error = -ENOMEM;
1734                 }
1735         }
1736
1737         if (error != 0)
1738                 sfw_shutdown();
1739         return error;
1740 }
1741
1742 void
1743 sfw_shutdown (void)
1744 {
1745         srpc_service_t  *sv;
1746         sfw_test_case_t *tsc;
1747         int              i;
1748
1749         spin_lock(&sfw_data.fw_lock);
1750
1751         sfw_data.fw_shuttingdown = 1;
1752         lst_wait_until(sfw_data.fw_active_srpc == NULL, sfw_data.fw_lock,
1753                        "waiting for active RPC to finish.\n");
1754
1755         if (sfw_del_session_timer() != 0)
1756                 lst_wait_until(sfw_data.fw_session == NULL, sfw_data.fw_lock,
1757                                "waiting for session timer to explode.\n");
1758
1759         sfw_deactivate_session();
1760         lst_wait_until(atomic_read(&sfw_data.fw_nzombies) == 0,
1761                        sfw_data.fw_lock,
1762                        "waiting for %d zombie sessions to die.\n",
1763                        atomic_read(&sfw_data.fw_nzombies));
1764
1765         spin_unlock(&sfw_data.fw_lock);
1766
1767         for (i = 0; ; i++) {
1768                 sv = &sfw_services[i];
1769                 if (sv->sv_name == NULL)
1770                         break;
1771
1772                 srpc_shutdown_service(sv);
1773                 srpc_remove_service(sv);
1774         }
1775
1776         list_for_each_entry (tsc, &sfw_data.fw_tests, tsc_list) {
1777                 sv = tsc->tsc_srv_service;
1778                 srpc_shutdown_service(sv);
1779                 srpc_remove_service(sv);
1780         }
1781
1782         while (!list_empty(&sfw_data.fw_zombie_rpcs)) {
1783                 srpc_client_rpc_t *rpc;
1784
1785                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1786                                      srpc_client_rpc_t, crpc_list);
1787                 list_del(&rpc->crpc_list);
1788
1789                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
1790         }
1791
1792         for (i = 0; ; i++) {
1793                 sv = &sfw_services[i];
1794                 if (sv->sv_name == NULL)
1795                         break;
1796
1797                 srpc_wait_service_shutdown(sv);
1798         }
1799
1800         while (!list_empty(&sfw_data.fw_tests)) {
1801                 tsc = list_entry(sfw_data.fw_tests.next,
1802                                      sfw_test_case_t, tsc_list);
1803
1804                 srpc_wait_service_shutdown(tsc->tsc_srv_service);
1805
1806                 list_del(&tsc->tsc_list);
1807                 LIBCFS_FREE(tsc, sizeof(*tsc));
1808         }
1809
1810         return;
1811 }