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)
 207                 return;
 208
 209         LASSERT(!sn->sn_timer_active);
 210
 211         sfw_data.fw_session = NULL;
 212         atomic_inc(&sfw_data.fw_nzombies);
 213         list_add(&sn->sn_list, &sfw_data.fw_zombie_sessions);
 214
 215         spin_unlock(&sfw_data.fw_lock);
 216
 217         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
 218                 srpc_abort_service(tsc->tsc_srv_service);
 219         }
 220
 221         spin_lock(&sfw_data.fw_lock);
 222
 223         list_for_each_entry(tsb, &sn->sn_batches, bat_list) {
 224                 if (sfw_batch_active(tsb)) {
 225                         nactive++;
 226                         sfw_stop_batch(tsb, 1);
 227                 }
 228         }
 229
 230         if (nactive != 0)
 231                 return;   /* wait for active batches to stop */
 232
 233         list_del_init(&sn->sn_list);
 234         spin_unlock(&sfw_data.fw_lock);
 235
 236         sfw_destroy_session(sn);
 237
 238         spin_lock(&sfw_data.fw_lock);
 239 }
 240
 241
 242 static void
 243 sfw_session_expired(void *data)
 244 {
 245         sfw_session_t *sn = data;
 246
 247         spin_lock(&sfw_data.fw_lock);
 248
 249         LASSERT(sn->sn_timer_active);
 250         LASSERT(sn == sfw_data.fw_session);
 251
 252         CWARN("Session expired! sid: %s-%llu, name: %s\n",
 253                libcfs_nid2str(sn->sn_id.ses_nid),
 254                sn->sn_id.ses_stamp, &sn->sn_name[0]);
 255
 256         sn->sn_timer_active = 0;
 257         sfw_deactivate_session();
 258
 259         spin_unlock(&sfw_data.fw_lock);
 260 }
 261
 262 static inline void
 263 sfw_init_session(sfw_session_t *sn, lst_sid_t sid,
 264                  unsigned features, const char *name)
 265 {
 266         stt_timer_t *timer = &sn->sn_timer;
 267
 268         memset(sn, 0, sizeof(sfw_session_t));
 269         INIT_LIST_HEAD(&sn->sn_list);
 270         INIT_LIST_HEAD(&sn->sn_batches);
 271         atomic_set(&sn->sn_refcount, 1);        /* +1 for caller */
 272         atomic_set(&sn->sn_brw_errors, 0);
 273         atomic_set(&sn->sn_ping_errors, 0);
 274         strlcpy(&sn->sn_name[0], name, sizeof(sn->sn_name));
 275
 276         sn->sn_timer_active = 0;
 277         sn->sn_id           = sid;
 278         sn->sn_features     = features;
 279         sn->sn_timeout      = session_timeout;
 280         sn->sn_started      = cfs_time_current();
 281
 282         timer->stt_data = sn;
 283         timer->stt_func = sfw_session_expired;
 284         INIT_LIST_HEAD(&timer->stt_list);
 285 }
 286
 287 /* completion handler for incoming framework RPCs */
 288 static void
 289 sfw_server_rpc_done(struct srpc_server_rpc *rpc)
 290 {
 291         struct srpc_service *sv = rpc->srpc_scd->scd_svc;
 292         int status = rpc->srpc_status;
 293
 294         CDEBUG(D_NET,
 295                 "Incoming framework RPC done: 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: service %d, peer %s, status %s:%d:%d\n",
 314                 rpc->crpc_service, libcfs_id2str(rpc->crpc_dest),
 315                 swi_state2str(rpc->crpc_wi.swi_state),
 316                 rpc->crpc_aborted, rpc->crpc_status);
 317
 318         spin_lock(&sfw_data.fw_lock);
 319
 320         /* my callers must finish all RPCs before shutting me down */
 321         LASSERT(!sfw_data.fw_shuttingdown);
 322         list_add(&rpc->crpc_list, &sfw_data.fw_zombie_rpcs);
 323
 324         spin_unlock(&sfw_data.fw_lock);
 325 }
 326
 327 static sfw_batch_t *
 328 sfw_find_batch(lst_bid_t bid)
 329 {
 330         sfw_session_t *sn = sfw_data.fw_session;
 331         sfw_batch_t *bat;
 332
 333         LASSERT(sn != NULL);
 334
 335         list_for_each_entry(bat, &sn->sn_batches, bat_list) {
 336                 if (bat->bat_id.bat_id == bid.bat_id)
 337                         return bat;
 338         }
 339
 340         return NULL;
 341 }
 342
 343 static sfw_batch_t *
 344 sfw_bid2batch(lst_bid_t bid)
 345 {
 346         sfw_session_t *sn = sfw_data.fw_session;
 347         sfw_batch_t *bat;
 348
 349         LASSERT(sn != NULL);
 350
 351         bat = sfw_find_batch(bid);
 352         if (bat != NULL)
 353                 return bat;
 354
 355         LIBCFS_ALLOC(bat, sizeof(sfw_batch_t));
 356         if (bat == NULL)
 357                 return NULL;
 358
 359         bat->bat_error    = 0;
 360         bat->bat_session  = sn;
 361         bat->bat_id       = bid;
 362         atomic_set(&bat->bat_nactive, 0);
 363         INIT_LIST_HEAD(&bat->bat_tests);
 364
 365         list_add_tail(&bat->bat_list, &sn->sn_batches);
 366         return bat;
 367 }
 368
 369 static int
 370 sfw_get_stats(srpc_stat_reqst_t *request, srpc_stat_reply_t *reply)
 371 {
 372         sfw_session_t *sn = sfw_data.fw_session;
 373         sfw_counters_t *cnt = &reply->str_fw;
 374         sfw_batch_t *bat;
 375         struct timeval tv;
 376
 377         reply->str_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 378
 379         if (request->str_sid.ses_nid == LNET_NID_ANY) {
 380                 reply->str_status = EINVAL;
 381                 return 0;
 382         }
 383
 384         if (sn == NULL || !sfw_sid_equal(request->str_sid, sn->sn_id)) {
 385                 reply->str_status = ESRCH;
 386                 return 0;
 387         }
 388
 389         lnet_counters_get(&reply->str_lnet);
 390         srpc_get_counters(&reply->str_rpc);
 391
 392         /* send over the msecs since the session was started
 393          - with 32 bits to send, this is ~49 days */
 394         cfs_duration_usec(cfs_time_sub(cfs_time_current(),
 395                                        sn->sn_started), &tv);
 396
 397         cnt->running_ms      = (__u32)(tv.tv_sec * 1000 + tv.tv_usec / 1000);
 398         cnt->brw_errors      = atomic_read(&sn->sn_brw_errors);
 399         cnt->ping_errors     = atomic_read(&sn->sn_ping_errors);
 400         cnt->zombie_sessions = atomic_read(&sfw_data.fw_nzombies);
 401
 402         cnt->active_batches = 0;
 403         list_for_each_entry(bat, &sn->sn_batches, bat_list) {
 404                 if (atomic_read(&bat->bat_nactive) > 0)
 405                         cnt->active_batches++;
 406         }
 407
 408         reply->str_status = 0;
 409         return 0;
 410 }
 411
 412 int
 413 sfw_make_session(srpc_mksn_reqst_t *request, srpc_mksn_reply_t *reply)
 414 {
 415         sfw_session_t *sn = sfw_data.fw_session;
 416         srpc_msg_t *msg = container_of(request, srpc_msg_t,
 417                                           msg_body.mksn_reqst);
 418         int cplen = 0;
 419
 420         if (request->mksn_sid.ses_nid == LNET_NID_ANY) {
 421                 reply->mksn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 422                 reply->mksn_status = EINVAL;
 423                 return 0;
 424         }
 425
 426         if (sn != NULL) {
 427                 reply->mksn_status  = 0;
 428                 reply->mksn_sid     = sn->sn_id;
 429                 reply->mksn_timeout = sn->sn_timeout;
 430
 431                 if (sfw_sid_equal(request->mksn_sid, sn->sn_id)) {
 432                         atomic_inc(&sn->sn_refcount);
 433                         return 0;
 434                 }
 435
 436                 if (!request->mksn_force) {
 437                         reply->mksn_status = EBUSY;
 438                         cplen = strlcpy(&reply->mksn_name[0], &sn->sn_name[0],
 439                                         sizeof(reply->mksn_name));
 440                         if (cplen >= sizeof(reply->mksn_name))
 441                                 return -E2BIG;
 442                         return 0;
 443                 }
 444         }
 445
 446         /* reject the request if it requires unknown features
 447          * NB: old version will always accept all features because it's not
 448          * aware of srpc_msg_t::msg_ses_feats, it's a defect but it's also
 449          * harmless because it will return zero feature to console, and it's
 450          * console's responsibility to make sure all nodes in a session have
 451          * same feature mask. */
 452         if ((msg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 453                 reply->mksn_status = EPROTO;
 454                 return 0;
 455         }
 456
 457         /* brand new or create by force */
 458         LIBCFS_ALLOC(sn, sizeof(sfw_session_t));
 459         if (sn == NULL) {
 460                 CERROR("Dropping RPC (mksn) under memory pressure.\n");
 461                 return -ENOMEM;
 462         }
 463
 464         sfw_init_session(sn, request->mksn_sid,
 465                          msg->msg_ses_feats, &request->mksn_name[0]);
 466
 467         spin_lock(&sfw_data.fw_lock);
 468
 469         sfw_deactivate_session();
 470         LASSERT(sfw_data.fw_session == NULL);
 471         sfw_data.fw_session = sn;
 472
 473         spin_unlock(&sfw_data.fw_lock);
 474
 475         reply->mksn_status  = 0;
 476         reply->mksn_sid     = sn->sn_id;
 477         reply->mksn_timeout = sn->sn_timeout;
 478         return 0;
 479 }
 480
 481 static int
 482 sfw_remove_session(srpc_rmsn_reqst_t *request, srpc_rmsn_reply_t *reply)
 483 {
 484         sfw_session_t *sn = sfw_data.fw_session;
 485
 486         reply->rmsn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 487
 488         if (request->rmsn_sid.ses_nid == LNET_NID_ANY) {
 489                 reply->rmsn_status = EINVAL;
 490                 return 0;
 491         }
 492
 493         if (sn == NULL || !sfw_sid_equal(request->rmsn_sid, sn->sn_id)) {
 494                 reply->rmsn_status = (sn == NULL) ? ESRCH : EBUSY;
 495                 return 0;
 496         }
 497
 498         if (!atomic_dec_and_test(&sn->sn_refcount)) {
 499                 reply->rmsn_status = 0;
 500                 return 0;
 501         }
 502
 503         spin_lock(&sfw_data.fw_lock);
 504         sfw_deactivate_session();
 505         spin_unlock(&sfw_data.fw_lock);
 506
 507         reply->rmsn_status = 0;
 508         reply->rmsn_sid    = LST_INVALID_SID;
 509         LASSERT(sfw_data.fw_session == NULL);
 510         return 0;
 511 }
 512
 513 static int
 514 sfw_debug_session(srpc_debug_reqst_t *request, srpc_debug_reply_t *reply)
 515 {
 516         sfw_session_t *sn = sfw_data.fw_session;
 517
 518         if (sn == NULL) {
 519                 reply->dbg_status = ESRCH;
 520                 reply->dbg_sid    = LST_INVALID_SID;
 521                 return 0;
 522         }
 523
 524         reply->dbg_status  = 0;
 525         reply->dbg_sid     = sn->sn_id;
 526         reply->dbg_timeout = sn->sn_timeout;
 527         if (strlcpy(reply->dbg_name, &sn->sn_name[0], sizeof(reply->dbg_name))
 528             >= sizeof(reply->dbg_name))
 529                 return -E2BIG;
 530
 531         return 0;
 532 }
 533
 534 static void
 535 sfw_test_rpc_fini(srpc_client_rpc_t *rpc)
 536 {
 537         sfw_test_unit_t *tsu = rpc->crpc_priv;
 538         sfw_test_instance_t *tsi = tsu->tsu_instance;
 539
 540         /* Called with hold of tsi->tsi_lock */
 541         LASSERT(list_empty(&rpc->crpc_list));
 542         list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
 543 }
 544
 545 static inline int
 546 sfw_test_buffers(sfw_test_instance_t *tsi)
 547 {
 548         struct sfw_test_case *tsc = sfw_find_test_case(tsi->tsi_service);
 549         struct srpc_service *svc = tsc->tsc_srv_service;
 550         int nbuf;
 551
 552         nbuf = min(svc->sv_wi_total, tsi->tsi_loop) / svc->sv_ncpts;
 553         return max(SFW_TEST_WI_MIN, nbuf + SFW_TEST_WI_EXTRA);
 554 }
 555
 556 static int
 557 sfw_load_test(struct sfw_test_instance *tsi)
 558 {
 559         struct sfw_test_case *tsc;
 560         struct srpc_service *svc;
 561         int nbuf;
 562         int rc;
 563
 564         LASSERT(tsi != NULL);
 565         tsc = sfw_find_test_case(tsi->tsi_service);
 566         nbuf = sfw_test_buffers(tsi);
 567         LASSERT(tsc != NULL);
 568         svc = tsc->tsc_srv_service;
 569
 570         if (tsi->tsi_is_client) {
 571                 tsi->tsi_ops = tsc->tsc_cli_ops;
 572                 return 0;
 573         }
 574
 575         rc = srpc_service_add_buffers(svc, nbuf);
 576         if (rc != 0) {
 577                 CWARN("Failed to reserve enough buffers: service %s, %d needed: %d\n",
 578                       svc->sv_name, nbuf, rc);
 579                 /* NB: this error handler is not strictly correct, because
 580                  * it may release more buffers than already allocated,
 581                  * but it doesn't matter because request portal should
 582                  * be lazy portal and will grow buffers if necessary. */
 583                 srpc_service_remove_buffers(svc, nbuf);
 584                 return -ENOMEM;
 585         }
 586
 587         CDEBUG(D_NET, "Reserved %d buffers for test %s\n",
 588                nbuf * (srpc_serv_is_framework(svc) ?
 589                        1 : cfs_cpt_number(cfs_cpt_table)), svc->sv_name);
 590         return 0;
 591 }
 592
 593 static void
 594 sfw_unload_test(struct sfw_test_instance *tsi)
 595 {
 596         struct sfw_test_case *tsc = sfw_find_test_case(tsi->tsi_service);
 597
 598         LASSERT(tsc != NULL);
 599
 600         if (tsi->tsi_is_client)
 601                 return;
 602
 603         /* shrink buffers, because request portal is lazy portal
 604          * which can grow buffers at runtime so we may leave
 605          * some buffers behind, but never mind... */
 606         srpc_service_remove_buffers(tsc->tsc_srv_service,
 607                                     sfw_test_buffers(tsi));
 608         return;
 609 }
 610
 611 static void
 612 sfw_destroy_test_instance(sfw_test_instance_t *tsi)
 613 {
 614         srpc_client_rpc_t *rpc;
 615         sfw_test_unit_t *tsu;
 616
 617         if (!tsi->tsi_is_client)
 618                 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 features of current session: %x/%x\n",
1274                                 request->msg_ses_feats, sn->sn_features);
1275                         reply->msg_body.reply.status = EPROTO;
1276                         reply->msg_body.reply.sid    = sn->sn_id;
1277                         goto out;
1278                 }
1279
1280         } else if ((request->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
1281                 /* NB: at this point, old version will ignore features and
1282                  * create new session anyway, so console should be able
1283                  * to handle this */
1284                 reply->msg_body.reply.status = EPROTO;
1285                 goto out;
1286         }
1287
1288         switch (sv->sv_id) {
1289         default:
1290                 LBUG();
1291         case SRPC_SERVICE_TEST:
1292                 rc = sfw_add_test(rpc);
1293                 break;
1294
1295         case SRPC_SERVICE_BATCH:
1296                 rc = sfw_control_batch(&request->msg_body.bat_reqst,
1297                                        &reply->msg_body.bat_reply);
1298                 break;
1299
1300         case SRPC_SERVICE_QUERY_STAT:
1301                 rc = sfw_get_stats(&request->msg_body.stat_reqst,
1302                                    &reply->msg_body.stat_reply);
1303                 break;
1304
1305         case SRPC_SERVICE_DEBUG:
1306                 rc = sfw_debug_session(&request->msg_body.dbg_reqst,
1307                                        &reply->msg_body.dbg_reply);
1308                 break;
1309
1310         case SRPC_SERVICE_MAKE_SESSION:
1311                 rc = sfw_make_session(&request->msg_body.mksn_reqst,
1312                                       &reply->msg_body.mksn_reply);
1313                 break;
1314
1315         case SRPC_SERVICE_REMOVE_SESSION:
1316                 rc = sfw_remove_session(&request->msg_body.rmsn_reqst,
1317                                         &reply->msg_body.rmsn_reply);
1318                 break;
1319         }
1320
1321         if (sfw_data.fw_session != NULL)
1322                 features = sfw_data.fw_session->sn_features;
1323  out:
1324         reply->msg_ses_feats = features;
1325         rpc->srpc_done = sfw_server_rpc_done;
1326         spin_lock(&sfw_data.fw_lock);
1327
1328         if (!sfw_data.fw_shuttingdown)
1329                 sfw_add_session_timer();
1330
1331         sfw_data.fw_active_srpc = NULL;
1332         spin_unlock(&sfw_data.fw_lock);
1333         return rc;
1334 }
1335
1336 static int
1337 sfw_bulk_ready(struct srpc_server_rpc *rpc, int status)
1338 {
1339         struct srpc_service *sv = rpc->srpc_scd->scd_svc;
1340         int rc;
1341
1342         LASSERT(rpc->srpc_bulk != NULL);
1343         LASSERT(sv->sv_id == SRPC_SERVICE_TEST);
1344         LASSERT(sfw_data.fw_active_srpc == NULL);
1345         LASSERT(rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst.tsr_is_client);
1346
1347         spin_lock(&sfw_data.fw_lock);
1348
1349         if (status != 0) {
1350                 CERROR("Bulk transfer failed for RPC: service %s, peer %s, status %d\n",
1351                        sv->sv_name, libcfs_id2str(rpc->srpc_peer), status);
1352                 spin_unlock(&sfw_data.fw_lock);
1353                 return -EIO;
1354         }
1355
1356         if (sfw_data.fw_shuttingdown) {
1357                 spin_unlock(&sfw_data.fw_lock);
1358                 return -ESHUTDOWN;
1359         }
1360
1361         if (sfw_del_session_timer() != 0) {
1362                 CERROR("Dropping RPC (%s) from %s: racing with expiry timer",
1363                        sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1364                 spin_unlock(&sfw_data.fw_lock);
1365                 return -EAGAIN;
1366         }
1367
1368         sfw_data.fw_active_srpc = rpc;
1369         spin_unlock(&sfw_data.fw_lock);
1370
1371         rc = sfw_add_test(rpc);
1372
1373         spin_lock(&sfw_data.fw_lock);
1374
1375         if (!sfw_data.fw_shuttingdown)
1376                 sfw_add_session_timer();
1377
1378         sfw_data.fw_active_srpc = NULL;
1379         spin_unlock(&sfw_data.fw_lock);
1380         return rc;
1381 }
1382
1383 srpc_client_rpc_t *
1384 sfw_create_rpc(lnet_process_id_t peer, int service,
1385                unsigned features, int nbulkiov, int bulklen,
1386                void (*done)(srpc_client_rpc_t *), void *priv)
1387 {
1388         srpc_client_rpc_t *rpc = NULL;
1389
1390         spin_lock(&sfw_data.fw_lock);
1391
1392         LASSERT(!sfw_data.fw_shuttingdown);
1393         LASSERT(service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1394
1395         if (nbulkiov == 0 && !list_empty(&sfw_data.fw_zombie_rpcs)) {
1396                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1397                                      srpc_client_rpc_t, crpc_list);
1398                 list_del(&rpc->crpc_list);
1399
1400                 srpc_init_client_rpc(rpc, peer, service, 0, 0,
1401                                      done, sfw_client_rpc_fini, priv);
1402         }
1403
1404         spin_unlock(&sfw_data.fw_lock);
1405
1406         if (rpc == NULL) {
1407                 rpc = srpc_create_client_rpc(peer, service,
1408                                              nbulkiov, bulklen, done,
1409                                              nbulkiov != 0 ?  NULL :
1410                                              sfw_client_rpc_fini,
1411                                              priv);
1412         }
1413
1414         if (rpc != NULL) /* "session" is concept in framework */
1415                 rpc->crpc_reqstmsg.msg_ses_feats = features;
1416
1417         return rpc;
1418 }
1419
1420 void
1421 sfw_unpack_message(srpc_msg_t *msg)
1422 {
1423         if (msg->msg_magic == SRPC_MSG_MAGIC)
1424                 return; /* no flipping needed */
1425
1426         /* srpc module should guarantee I wouldn't get crap */
1427         LASSERT(msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
1428
1429         if (msg->msg_type == SRPC_MSG_STAT_REQST) {
1430                 srpc_stat_reqst_t *req = &msg->msg_body.stat_reqst;
1431
1432                 __swab32s(&req->str_type);
1433                 __swab64s(&req->str_rpyid);
1434                 sfw_unpack_sid(req->str_sid);
1435                 return;
1436         }
1437
1438         if (msg->msg_type == SRPC_MSG_STAT_REPLY) {
1439                 srpc_stat_reply_t *rep = &msg->msg_body.stat_reply;
1440
1441                 __swab32s(&rep->str_status);
1442                 sfw_unpack_sid(rep->str_sid);
1443                 sfw_unpack_fw_counters(rep->str_fw);
1444                 sfw_unpack_rpc_counters(rep->str_rpc);
1445                 sfw_unpack_lnet_counters(rep->str_lnet);
1446                 return;
1447         }
1448
1449         if (msg->msg_type == SRPC_MSG_MKSN_REQST) {
1450                 srpc_mksn_reqst_t *req = &msg->msg_body.mksn_reqst;
1451
1452                 __swab64s(&req->mksn_rpyid);
1453                 __swab32s(&req->mksn_force);
1454                 sfw_unpack_sid(req->mksn_sid);
1455                 return;
1456         }
1457
1458         if (msg->msg_type == SRPC_MSG_MKSN_REPLY) {
1459                 srpc_mksn_reply_t *rep = &msg->msg_body.mksn_reply;
1460
1461                 __swab32s(&rep->mksn_status);
1462                 __swab32s(&rep->mksn_timeout);
1463                 sfw_unpack_sid(rep->mksn_sid);
1464                 return;
1465         }
1466
1467         if (msg->msg_type == SRPC_MSG_RMSN_REQST) {
1468                 srpc_rmsn_reqst_t *req = &msg->msg_body.rmsn_reqst;
1469
1470                 __swab64s(&req->rmsn_rpyid);
1471                 sfw_unpack_sid(req->rmsn_sid);
1472                 return;
1473         }
1474
1475         if (msg->msg_type == SRPC_MSG_RMSN_REPLY) {
1476                 srpc_rmsn_reply_t *rep = &msg->msg_body.rmsn_reply;
1477
1478                 __swab32s(&rep->rmsn_status);
1479                 sfw_unpack_sid(rep->rmsn_sid);
1480                 return;
1481         }
1482
1483         if (msg->msg_type == SRPC_MSG_DEBUG_REQST) {
1484                 srpc_debug_reqst_t *req = &msg->msg_body.dbg_reqst;
1485
1486                 __swab64s(&req->dbg_rpyid);
1487                 __swab32s(&req->dbg_flags);
1488                 sfw_unpack_sid(req->dbg_sid);
1489                 return;
1490         }
1491
1492         if (msg->msg_type == SRPC_MSG_DEBUG_REPLY) {
1493                 srpc_debug_reply_t *rep = &msg->msg_body.dbg_reply;
1494
1495                 __swab32s(&rep->dbg_nbatch);
1496                 __swab32s(&rep->dbg_timeout);
1497                 sfw_unpack_sid(rep->dbg_sid);
1498                 return;
1499         }
1500
1501         if (msg->msg_type == SRPC_MSG_BATCH_REQST) {
1502                 srpc_batch_reqst_t *req = &msg->msg_body.bat_reqst;
1503
1504                 __swab32s(&req->bar_opc);
1505                 __swab64s(&req->bar_rpyid);
1506                 __swab32s(&req->bar_testidx);
1507                 __swab32s(&req->bar_arg);
1508                 sfw_unpack_sid(req->bar_sid);
1509                 __swab64s(&req->bar_bid.bat_id);
1510                 return;
1511         }
1512
1513         if (msg->msg_type == SRPC_MSG_BATCH_REPLY) {
1514                 srpc_batch_reply_t *rep = &msg->msg_body.bat_reply;
1515
1516                 __swab32s(&rep->bar_status);
1517                 sfw_unpack_sid(rep->bar_sid);
1518                 return;
1519         }
1520
1521         if (msg->msg_type == SRPC_MSG_TEST_REQST) {
1522                 srpc_test_reqst_t *req = &msg->msg_body.tes_reqst;
1523
1524                 __swab64s(&req->tsr_rpyid);
1525                 __swab64s(&req->tsr_bulkid);
1526                 __swab32s(&req->tsr_loop);
1527                 __swab32s(&req->tsr_ndest);
1528                 __swab32s(&req->tsr_concur);
1529                 __swab32s(&req->tsr_service);
1530                 sfw_unpack_sid(req->tsr_sid);
1531                 __swab64s(&req->tsr_bid.bat_id);
1532                 return;
1533         }
1534
1535         if (msg->msg_type == SRPC_MSG_TEST_REPLY) {
1536                 srpc_test_reply_t *rep = &msg->msg_body.tes_reply;
1537
1538                 __swab32s(&rep->tsr_status);
1539                 sfw_unpack_sid(rep->tsr_sid);
1540                 return;
1541         }
1542
1543         if (msg->msg_type == SRPC_MSG_JOIN_REQST) {
1544                 srpc_join_reqst_t *req = &msg->msg_body.join_reqst;
1545
1546                 __swab64s(&req->join_rpyid);
1547                 sfw_unpack_sid(req->join_sid);
1548                 return;
1549         }
1550
1551         if (msg->msg_type == SRPC_MSG_JOIN_REPLY) {
1552                 srpc_join_reply_t *rep = &msg->msg_body.join_reply;
1553
1554                 __swab32s(&rep->join_status);
1555                 __swab32s(&rep->join_timeout);
1556                 sfw_unpack_sid(rep->join_sid);
1557                 return;
1558         }
1559
1560         LBUG();
1561         return;
1562 }
1563
1564 void
1565 sfw_abort_rpc(srpc_client_rpc_t *rpc)
1566 {
1567         LASSERT(atomic_read(&rpc->crpc_refcount) > 0);
1568         LASSERT(rpc->crpc_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1569
1570         spin_lock(&rpc->crpc_lock);
1571         srpc_abort_rpc(rpc, -EINTR);
1572         spin_unlock(&rpc->crpc_lock);
1573         return;
1574 }
1575
1576 void
1577 sfw_post_rpc(srpc_client_rpc_t *rpc)
1578 {
1579         spin_lock(&rpc->crpc_lock);
1580
1581         LASSERT(!rpc->crpc_closed);
1582         LASSERT(!rpc->crpc_aborted);
1583         LASSERT(list_empty(&rpc->crpc_list));
1584         LASSERT(!sfw_data.fw_shuttingdown);
1585
1586         rpc->crpc_timeout = rpc_timeout;
1587         srpc_post_rpc(rpc);
1588
1589         spin_unlock(&rpc->crpc_lock);
1590         return;
1591 }
1592
1593 static srpc_service_t sfw_services[] = {
1594         {
1595                 /* sv_id */    SRPC_SERVICE_DEBUG,
1596                 /* sv_name */  "debug",
1597                 0
1598         },
1599         {
1600                 /* sv_id */    SRPC_SERVICE_QUERY_STAT,
1601                 /* sv_name */  "query stats",
1602                 0
1603         },
1604         {
1605                 /* sv_id */    SRPC_SERVICE_MAKE_SESSION,
1606                 /* sv_name */  "make session",
1607                 0
1608         },
1609         {
1610                 /* sv_id */    SRPC_SERVICE_REMOVE_SESSION,
1611                 /* sv_name */  "remove session",
1612                 0
1613         },
1614         {
1615                 /* sv_id */    SRPC_SERVICE_BATCH,
1616                 /* sv_name */  "batch service",
1617                 0
1618         },
1619         {
1620                 /* sv_id */    SRPC_SERVICE_TEST,
1621                 /* sv_name */  "test service",
1622                 0
1623         },
1624         {
1625                 /* sv_id */    0,
1626                 /* sv_name */  NULL,
1627                 0
1628         }
1629 };
1630
1631 extern sfw_test_client_ops_t ping_test_client;
1632 extern srpc_service_t   ping_test_service;
1633 extern void ping_init_test_client(void);
1634 extern void ping_init_test_service(void);
1635
1636 extern sfw_test_client_ops_t brw_test_client;
1637 extern srpc_service_t   brw_test_service;
1638 extern void brw_init_test_client(void);
1639 extern void brw_init_test_service(void);
1640
1641
1642 int
1643 sfw_startup(void)
1644 {
1645         int i;
1646         int rc;
1647         int error;
1648         srpc_service_t *sv;
1649         sfw_test_case_t *tsc;
1650
1651
1652         if (session_timeout < 0) {
1653                 CERROR("Session timeout must be non-negative: %d\n",
1654                         session_timeout);
1655                 return -EINVAL;
1656         }
1657
1658         if (rpc_timeout < 0) {
1659                 CERROR("RPC timeout must be non-negative: %d\n",
1660                         rpc_timeout);
1661                 return -EINVAL;
1662         }
1663
1664         if (session_timeout == 0)
1665                 CWARN("Zero session_timeout specified - test sessions never expire.\n");
1666
1667         if (rpc_timeout == 0)
1668                 CWARN("Zero rpc_timeout specified - test RPC never expire.\n");
1669
1670         memset(&sfw_data, 0, sizeof(struct smoketest_framework));
1671
1672         sfw_data.fw_session     = NULL;
1673         sfw_data.fw_active_srpc = NULL;
1674         spin_lock_init(&sfw_data.fw_lock);
1675         atomic_set(&sfw_data.fw_nzombies, 0);
1676         INIT_LIST_HEAD(&sfw_data.fw_tests);
1677         INIT_LIST_HEAD(&sfw_data.fw_zombie_rpcs);
1678         INIT_LIST_HEAD(&sfw_data.fw_zombie_sessions);
1679
1680         brw_init_test_client();
1681         brw_init_test_service();
1682         rc = sfw_register_test(&brw_test_service, &brw_test_client);
1683         LASSERT(rc == 0);
1684
1685         ping_init_test_client();
1686         ping_init_test_service();
1687         rc = sfw_register_test(&ping_test_service, &ping_test_client);
1688         LASSERT(rc == 0);
1689
1690         error = 0;
1691         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1692                 sv = tsc->tsc_srv_service;
1693
1694                 rc = srpc_add_service(sv);
1695                 LASSERT(rc != -EBUSY);
1696                 if (rc != 0) {
1697                         CWARN("Failed to add %s service: %d\n",
1698                                sv->sv_name, rc);
1699                         error = rc;
1700                 }
1701         }
1702
1703         for (i = 0; ; i++) {
1704                 sv = &sfw_services[i];
1705                 if (sv->sv_name == NULL)
1706                         break;
1707
1708                 sv->sv_bulk_ready = NULL;
1709                 sv->sv_handler    = sfw_handle_server_rpc;
1710                 sv->sv_wi_total   = SFW_FRWK_WI_MAX;
1711                 if (sv->sv_id == SRPC_SERVICE_TEST)
1712                         sv->sv_bulk_ready = sfw_bulk_ready;
1713
1714                 rc = srpc_add_service(sv);
1715                 LASSERT(rc != -EBUSY);
1716                 if (rc != 0) {
1717                         CWARN("Failed to add %s service: %d\n",
1718                                sv->sv_name, rc);
1719                         error = rc;
1720                 }
1721
1722                 /* about to sfw_shutdown, no need to add buffer */
1723                 if (error)
1724                         continue;
1725
1726                 rc = srpc_service_add_buffers(sv, sv->sv_wi_total);
1727                 if (rc != 0) {
1728                         CWARN("Failed to reserve enough buffers: service %s, %d needed: %d\n",
1729                               sv->sv_name, sv->sv_wi_total, rc);
1730                         error = -ENOMEM;
1731                 }
1732         }
1733
1734         if (error != 0)
1735                 sfw_shutdown();
1736         return error;
1737 }
1738
1739 void
1740 sfw_shutdown(void)
1741 {
1742         srpc_service_t *sv;
1743         sfw_test_case_t *tsc;
1744         int i;
1745
1746         spin_lock(&sfw_data.fw_lock);
1747
1748         sfw_data.fw_shuttingdown = 1;
1749         lst_wait_until(sfw_data.fw_active_srpc == NULL, sfw_data.fw_lock,
1750                        "waiting for active RPC to finish.\n");
1751
1752         if (sfw_del_session_timer() != 0)
1753                 lst_wait_until(sfw_data.fw_session == NULL, sfw_data.fw_lock,
1754                                "waiting for session timer to explode.\n");
1755
1756         sfw_deactivate_session();
1757         lst_wait_until(atomic_read(&sfw_data.fw_nzombies) == 0,
1758                        sfw_data.fw_lock,
1759                        "waiting for %d zombie sessions to die.\n",
1760                        atomic_read(&sfw_data.fw_nzombies));
1761
1762         spin_unlock(&sfw_data.fw_lock);
1763
1764         for (i = 0; ; i++) {
1765                 sv = &sfw_services[i];
1766                 if (sv->sv_name == NULL)
1767                         break;
1768
1769                 srpc_shutdown_service(sv);
1770                 srpc_remove_service(sv);
1771         }
1772
1773         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1774                 sv = tsc->tsc_srv_service;
1775                 srpc_shutdown_service(sv);
1776                 srpc_remove_service(sv);
1777         }
1778
1779         while (!list_empty(&sfw_data.fw_zombie_rpcs)) {
1780                 srpc_client_rpc_t *rpc;
1781
1782                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1783                                      srpc_client_rpc_t, crpc_list);
1784                 list_del(&rpc->crpc_list);
1785
1786                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
1787         }
1788
1789         for (i = 0; ; i++) {
1790                 sv = &sfw_services[i];
1791                 if (sv->sv_name == NULL)
1792                         break;
1793
1794                 srpc_wait_service_shutdown(sv);
1795         }
1796
1797         while (!list_empty(&sfw_data.fw_tests)) {
1798                 tsc = list_entry(sfw_data.fw_tests.next,
1799                                      sfw_test_case_t, tsc_list);
1800
1801                 srpc_wait_service_shutdown(tsc->tsc_srv_service);
1802
1803                 list_del(&tsc->tsc_list);
1804                 LIBCFS_FREE(tsc, sizeof(*tsc));
1805         }
1806
1807         return;
1808 }