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