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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2012, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lnet/selftest/framework.c
  33  *
  34  * Author: Isaac Huang <isaac@clusterfs.com>
  35  * Author: Liang Zhen  <liangzhen@clusterfs.com>
  36  */
  37
  38 #define DEBUG_SUBSYSTEM S_LNET
  39
  40 #include "selftest.h"
  41
  42 struct lst_sid LST_INVALID_SID = { .ses_nid = LNET_NID_ANY, .ses_stamp = -1};
  43
  44 static int session_timeout = 100;
  45 module_param(session_timeout, int, 0444);
  46 MODULE_PARM_DESC(session_timeout, "test session timeout in seconds (100 by default, 0 == never)");
  47
  48 static int rpc_timeout = 64;
  49 module_param(rpc_timeout, int, 0644);
  50 MODULE_PARM_DESC(rpc_timeout, "rpc timeout in seconds (64 by default, 0 == never)");
  51
  52 #define sfw_unpack_id(id)               \
  53 do {                                    \
  54         __swab64s(&(id).nid);           \
  55         __swab32s(&(id).pid);           \
  56 } while (0)
  57
  58 #define sfw_unpack_sid(sid)             \
  59 do {                                    \
  60         __swab64s(&(sid).ses_nid);      \
  61         __swab64s(&(sid).ses_stamp);    \
  62 } while (0)
  63
  64 #define sfw_unpack_fw_counters(fc)        \
  65 do {                                      \
  66         __swab32s(&(fc).running_ms);      \
  67         __swab32s(&(fc).active_batches);  \
  68         __swab32s(&(fc).zombie_sessions); \
  69         __swab32s(&(fc).brw_errors);      \
  70         __swab32s(&(fc).ping_errors);     \
  71 } while (0)
  72
  73 #define sfw_unpack_rpc_counters(rc)     \
  74 do {                                    \
  75         __swab32s(&(rc).errors);        \
  76         __swab32s(&(rc).rpcs_sent);     \
  77         __swab32s(&(rc).rpcs_rcvd);     \
  78         __swab32s(&(rc).rpcs_dropped);  \
  79         __swab32s(&(rc).rpcs_expired);  \
  80         __swab64s(&(rc).bulk_get);      \
  81         __swab64s(&(rc).bulk_put);      \
  82 } while (0)
  83
  84 #define sfw_unpack_lnet_counters(lc)    \
  85 do {                                    \
  86         __swab32s(&(lc).lcc_errors);        \
  87         __swab32s(&(lc).lcc_msgs_max);      \
  88         __swab32s(&(lc).lcc_msgs_alloc);    \
  89         __swab32s(&(lc).lcc_send_count);    \
  90         __swab32s(&(lc).lcc_recv_count);    \
  91         __swab32s(&(lc).lcc_drop_count);    \
  92         __swab32s(&(lc).lcc_route_count);   \
  93         __swab64s(&(lc).lcc_send_length);   \
  94         __swab64s(&(lc).lcc_recv_length);   \
  95         __swab64s(&(lc).lcc_drop_length);   \
  96         __swab64s(&(lc).lcc_route_length);  \
  97 } while (0)
  98
  99 #define sfw_test_active(t)      (atomic_read(&(t)->tsi_nactive) != 0)
 100 #define sfw_batch_active(b)     (atomic_read(&(b)->bat_nactive) != 0)
 101
 102 static struct smoketest_framework {
 103         /* RPCs to be recycled */
 104         struct list_head        fw_zombie_rpcs;
 105         /* stopping sessions */
 106         struct list_head        fw_zombie_sessions;
 107         /* registered test cases */
 108         struct list_head        fw_tests;
 109         /* # zombie sessions */
 110         atomic_t                fw_nzombies;
 111         /* serialise */
 112         spinlock_t              fw_lock;
 113         /* _the_ session */
 114         struct sfw_session      *fw_session;
 115         /* shutdown in progress */
 116         int                     fw_shuttingdown;
 117         /* running RPC */
 118         struct srpc_server_rpc  *fw_active_srpc;
 119 } sfw_data;
 120
 121 /* forward ref's */
 122 static int sfw_stop_batch(struct sfw_batch *tsb, int force);
 123 static void sfw_destroy_session(struct sfw_session *sn);
 124
 125 static inline struct sfw_test_case *
 126 sfw_find_test_case(int id)
 127 {
 128         struct sfw_test_case *tsc;
 129
 130         LASSERT(id <= SRPC_SERVICE_MAX_ID);
 131         LASSERT(id > SRPC_FRAMEWORK_SERVICE_MAX_ID);
 132
 133         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
 134                 if (tsc->tsc_srv_service->sv_id == id)
 135                         return tsc;
 136         }
 137
 138         return NULL;
 139 }
 140
 141 static int
 142 sfw_register_test(struct srpc_service *service,
 143                   struct sfw_test_client_ops *cliops)
 144 {
 145         struct sfw_test_case *tsc;
 146
 147         if (sfw_find_test_case(service->sv_id) != NULL) {
 148                 CERROR ("Failed to register test %s (%d)\n",
 149                         service->sv_name, service->sv_id);
 150                 return -EEXIST;
 151         }
 152
 153         LIBCFS_ALLOC(tsc, sizeof(*tsc));
 154         if (tsc == NULL)
 155                 return -ENOMEM;
 156
 157         tsc->tsc_cli_ops     = cliops;
 158         tsc->tsc_srv_service = service;
 159
 160         list_add_tail(&tsc->tsc_list, &sfw_data.fw_tests);
 161         return 0;
 162 }
 163
 164 static void
 165 sfw_add_session_timer (void)
 166 {
 167         struct sfw_session *sn = sfw_data.fw_session;
 168         struct stt_timer *timer = &sn->sn_timer;
 169
 170         LASSERT (!sfw_data.fw_shuttingdown);
 171
 172         if (sn == NULL || sn->sn_timeout == 0)
 173                 return;
 174
 175         LASSERT (!sn->sn_timer_active);
 176
 177         sn->sn_timer_active = 1;
 178         timer->stt_expires = ktime_get_real_seconds()+ sn->sn_timeout;
 179         stt_add_timer(timer);
 180         return;
 181 }
 182
 183 static int
 184 sfw_del_session_timer (void)
 185 {
 186         struct sfw_session *sn = sfw_data.fw_session;
 187
 188         if (sn == NULL || !sn->sn_timer_active)
 189                 return 0;
 190
 191         LASSERT (sn->sn_timeout != 0);
 192
 193         if (stt_del_timer(&sn->sn_timer)) { /* timer defused */
 194                 sn->sn_timer_active = 0;
 195                 return 0;
 196         }
 197
 198         return EBUSY; /* racing with sfw_session_expired() */
 199 }
 200
 201 /* called with sfw_data.fw_lock held */
 202 static void
 203 sfw_deactivate_session (void)
 204 __must_hold(&sfw_data.fw_lock)
 205 {
 206         struct sfw_session *sn = sfw_data.fw_session;
 207         int            nactive = 0;
 208         struct sfw_batch *tsb;
 209         struct sfw_test_case *tsc;
 210
 211         if (sn == NULL) return;
 212
 213         LASSERT(!sn->sn_timer_active);
 214
 215         sfw_data.fw_session = NULL;
 216         atomic_inc(&sfw_data.fw_nzombies);
 217         list_add(&sn->sn_list, &sfw_data.fw_zombie_sessions);
 218
 219         spin_unlock(&sfw_data.fw_lock);
 220
 221         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
 222                 srpc_abort_service(tsc->tsc_srv_service);
 223         }
 224
 225         spin_lock(&sfw_data.fw_lock);
 226
 227         list_for_each_entry(tsb, &sn->sn_batches, bat_list) {
 228                 if (sfw_batch_active(tsb)) {
 229                         nactive++;
 230                         sfw_stop_batch(tsb, 1);
 231                 }
 232         }
 233
 234         if (nactive != 0)
 235                 return; /* wait for active batches to stop */
 236
 237         list_del_init(&sn->sn_list);
 238         spin_unlock(&sfw_data.fw_lock);
 239
 240         sfw_destroy_session(sn);
 241
 242         spin_lock(&sfw_data.fw_lock);
 243 }
 244
 245
 246 static void
 247 sfw_session_expired (void *data)
 248 {
 249         struct sfw_session *sn = data;
 250
 251         spin_lock(&sfw_data.fw_lock);
 252
 253         LASSERT (sn->sn_timer_active);
 254         LASSERT (sn == sfw_data.fw_session);
 255
 256         CWARN ("Session expired! sid: %s-%llu, name: %s\n",
 257                libcfs_nid2str(sn->sn_id.ses_nid),
 258                sn->sn_id.ses_stamp, &sn->sn_name[0]);
 259
 260         sn->sn_timer_active = 0;
 261         sfw_deactivate_session();
 262
 263         spin_unlock(&sfw_data.fw_lock);
 264 }
 265
 266 static inline void
 267 sfw_init_session(struct sfw_session *sn, struct lst_sid sid,
 268                  unsigned features, const char *name)
 269 {
 270         struct stt_timer *timer = &sn->sn_timer;
 271
 272         memset(sn, 0, sizeof(struct sfw_session));
 273         INIT_LIST_HEAD(&sn->sn_list);
 274         INIT_LIST_HEAD(&sn->sn_batches);
 275         atomic_set(&sn->sn_refcount, 1);        /* +1 for caller */
 276         atomic_set(&sn->sn_brw_errors, 0);
 277         atomic_set(&sn->sn_ping_errors, 0);
 278         strlcpy(&sn->sn_name[0], name, sizeof(sn->sn_name));
 279
 280         sn->sn_timer_active = 0;
 281         sn->sn_id = sid;
 282         sn->sn_features = features;
 283         sn->sn_timeout = session_timeout;
 284         sn->sn_started = ktime_get();
 285
 286         timer->stt_data = sn;
 287         timer->stt_func = sfw_session_expired;
 288         INIT_LIST_HEAD(&timer->stt_list);
 289 }
 290
 291 /* completion handler for incoming framework RPCs */
 292 static void
 293 sfw_server_rpc_done(struct srpc_server_rpc *rpc)
 294 {
 295         struct srpc_service     *sv     = rpc->srpc_scd->scd_svc;
 296         int                     status  = rpc->srpc_status;
 297
 298         CDEBUG (D_NET,
 299                 "Incoming framework RPC done: "
 300                 "service %s, peer %s, status %s:%d\n",
 301                 sv->sv_name, libcfs_id2str(rpc->srpc_peer),
 302                 swi_state2str(rpc->srpc_wi.swi_state),
 303                 status);
 304
 305         if (rpc->srpc_bulk != NULL)
 306                 sfw_free_pages(rpc);
 307         return;
 308 }
 309
 310 static void
 311 sfw_client_rpc_fini(struct srpc_client_rpc *rpc)
 312 {
 313         LASSERT(rpc->crpc_bulk.bk_niov == 0);
 314         LASSERT(list_empty(&rpc->crpc_list));
 315         LASSERT(atomic_read(&rpc->crpc_refcount) == 0);
 316
 317         CDEBUG(D_NET, "Outgoing framework RPC done: "
 318                "service %d, peer %s, status %s:%d:%d\n",
 319                rpc->crpc_service, libcfs_id2str(rpc->crpc_dest),
 320                swi_state2str(rpc->crpc_wi.swi_state),
 321                rpc->crpc_aborted, rpc->crpc_status);
 322
 323         spin_lock(&sfw_data.fw_lock);
 324
 325         /* my callers must finish all RPCs before shutting me down */
 326         LASSERT(!sfw_data.fw_shuttingdown);
 327         list_add(&rpc->crpc_list, &sfw_data.fw_zombie_rpcs);
 328
 329         spin_unlock(&sfw_data.fw_lock);
 330 }
 331
 332 static struct sfw_batch *
 333 sfw_find_batch(struct lst_bid bid)
 334 {
 335         struct sfw_session *sn = sfw_data.fw_session;
 336         struct sfw_batch *bat;
 337
 338         LASSERT(sn != NULL);
 339
 340         list_for_each_entry(bat, &sn->sn_batches, bat_list) {
 341                 if (bat->bat_id.bat_id == bid.bat_id)
 342                         return bat;
 343         }
 344
 345         return NULL;
 346 }
 347
 348 static struct sfw_batch *
 349 sfw_bid2batch(struct lst_bid bid)
 350 {
 351         struct sfw_session *sn = sfw_data.fw_session;
 352         struct sfw_batch *bat;
 353
 354         LASSERT (sn != NULL);
 355
 356         bat = sfw_find_batch(bid);
 357         if (bat != NULL)
 358                 return bat;
 359
 360         LIBCFS_ALLOC(bat, sizeof(*bat));
 361         if (bat == NULL)
 362                 return NULL;
 363
 364         bat->bat_error   = 0;
 365         bat->bat_session = sn;
 366         bat->bat_id      = bid;
 367         atomic_set(&bat->bat_nactive, 0);
 368         INIT_LIST_HEAD(&bat->bat_tests);
 369
 370         list_add_tail(&bat->bat_list, &sn->sn_batches);
 371         return bat;
 372 }
 373
 374 static int
 375 sfw_get_stats(struct srpc_stat_reqst *request, struct srpc_stat_reply *reply)
 376 {
 377         struct sfw_session *sn = sfw_data.fw_session;
 378         struct sfw_counters *cnt = &reply->str_fw;
 379         struct sfw_batch *bat;
 380
 381         reply->str_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 382
 383         if (request->str_sid.ses_nid == LNET_NID_ANY) {
 384                 reply->str_status = EINVAL;
 385                 return 0;
 386         }
 387
 388         if (sn == NULL || !sfw_sid_equal(request->str_sid, sn->sn_id)) {
 389                 reply->str_status = ESRCH;
 390                 return 0;
 391         }
 392
 393         lnet_counters_get_common(&reply->str_lnet);
 394         srpc_get_counters(&reply->str_rpc);
 395
 396         /* send over the msecs since the session was started
 397          - with 32 bits to send, this is ~49 days */
 398         cnt->running_ms = ktime_ms_delta(ktime_get(), sn->sn_started);
 399         cnt->brw_errors = atomic_read(&sn->sn_brw_errors);
 400         cnt->ping_errors = atomic_read(&sn->sn_ping_errors);
 401         cnt->zombie_sessions = atomic_read(&sfw_data.fw_nzombies);
 402
 403         cnt->active_batches = 0;
 404         list_for_each_entry(bat, &sn->sn_batches, bat_list) {
 405                 if (atomic_read(&bat->bat_nactive) > 0)
 406                         cnt->active_batches++;
 407         }
 408
 409         reply->str_status = 0;
 410         return 0;
 411 }
 412
 413 int
 414 sfw_make_session(struct srpc_mksn_reqst *request, struct srpc_mksn_reply *reply)
 415 {
 416         struct sfw_session *sn = sfw_data.fw_session;
 417         struct srpc_msg *msg = container_of(request, struct srpc_msg,
 418                                             msg_body.mksn_reqst);
 419         int cplen = 0;
 420
 421         if (request->mksn_sid.ses_nid == LNET_NID_ANY) {
 422                 reply->mksn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 423                 reply->mksn_status = EINVAL;
 424                 return 0;
 425         }
 426
 427         if (sn != NULL) {
 428                 reply->mksn_status  = 0;
 429                 reply->mksn_sid     = sn->sn_id;
 430                 reply->mksn_timeout = sn->sn_timeout;
 431
 432                 if (sfw_sid_equal(request->mksn_sid, sn->sn_id)) {
 433                         atomic_inc(&sn->sn_refcount);
 434                         return 0;
 435                 }
 436
 437                 if (!request->mksn_force) {
 438                         reply->mksn_status = EBUSY;
 439                         cplen = strlcpy(&reply->mksn_name[0], &sn->sn_name[0],
 440                                         sizeof(reply->mksn_name));
 441                         if (cplen >= sizeof(reply->mksn_name))
 442                                 return -E2BIG;
 443                         return 0;
 444                 }
 445         }
 446
 447         /* reject the request if it requires unknown features
 448          * NB: old version will always accept all features because it's not
 449          * aware of struct srpc_msg::msg_ses_feats, it's a defect but it's also
 450          * harmless because it will return zero feature to console, and it's
 451          * console's responsibility to make sure all nodes in a session have
 452          * same feature mask. */
 453         if ((msg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 454                 reply->mksn_status = EPROTO;
 455                 return 0;
 456         }
 457
 458         /* brand new or create by force */
 459         LIBCFS_ALLOC(sn, sizeof(*sn));
 460         if (sn == NULL) {
 461                 CERROR("dropping RPC mksn under memory pressure\n");
 462                 return -ENOMEM;
 463         }
 464
 465         sfw_init_session(sn, request->mksn_sid,
 466                          msg->msg_ses_feats, &request->mksn_name[0]);
 467
 468         spin_lock(&sfw_data.fw_lock);
 469
 470         sfw_deactivate_session();
 471         LASSERT(sfw_data.fw_session == NULL);
 472         sfw_data.fw_session = sn;
 473
 474         spin_unlock(&sfw_data.fw_lock);
 475
 476         reply->mksn_status  = 0;
 477         reply->mksn_sid     = sn->sn_id;
 478         reply->mksn_timeout = sn->sn_timeout;
 479         return 0;
 480 }
 481
 482 static int
 483 sfw_remove_session(struct srpc_rmsn_reqst *request,
 484                    struct srpc_rmsn_reply *reply)
 485 {
 486         struct sfw_session *sn = sfw_data.fw_session;
 487
 488         reply->rmsn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 489
 490         if (request->rmsn_sid.ses_nid == LNET_NID_ANY) {
 491                 reply->rmsn_status = EINVAL;
 492                 return 0;
 493         }
 494
 495         if (sn == NULL || !sfw_sid_equal(request->rmsn_sid, sn->sn_id)) {
 496                 reply->rmsn_status = (sn == NULL) ? ESRCH : EBUSY;
 497                 return 0;
 498         }
 499
 500         if (!atomic_dec_and_test(&sn->sn_refcount)) {
 501                 reply->rmsn_status = 0;
 502                 return 0;
 503         }
 504
 505         spin_lock(&sfw_data.fw_lock);
 506         sfw_deactivate_session();
 507         spin_unlock(&sfw_data.fw_lock);
 508
 509         reply->rmsn_status = 0;
 510         reply->rmsn_sid    = LST_INVALID_SID;
 511         LASSERT(sfw_data.fw_session == NULL);
 512         return 0;
 513 }
 514
 515 static int
 516 sfw_debug_session(struct srpc_debug_reqst *request,
 517                   struct srpc_debug_reply *reply)
 518 {
 519         struct sfw_session *sn = sfw_data.fw_session;
 520
 521         if (sn == NULL) {
 522                 reply->dbg_status = ESRCH;
 523                 reply->dbg_sid    = LST_INVALID_SID;
 524                 return 0;
 525         }
 526
 527         reply->dbg_status  = 0;
 528         reply->dbg_sid     = sn->sn_id;
 529         reply->dbg_timeout = sn->sn_timeout;
 530         if (strlcpy(reply->dbg_name, &sn->sn_name[0], sizeof(reply->dbg_name))
 531             >= sizeof(reply->dbg_name))
 532                 return -E2BIG;
 533
 534         return 0;
 535 }
 536
 537 static void
 538 sfw_test_rpc_fini(struct srpc_client_rpc *rpc)
 539 {
 540         struct sfw_test_unit *tsu = rpc->crpc_priv;
 541         struct sfw_test_instance *tsi = tsu->tsu_instance;
 542
 543         /* Called with hold of tsi->tsi_lock */
 544         LASSERT(list_empty(&rpc->crpc_list));
 545         list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
 546 }
 547
 548 static inline int
 549 sfw_test_buffers(struct sfw_test_instance *tsi)
 550 {
 551         struct sfw_test_case    *tsc;
 552         struct srpc_service     *svc;
 553         int                     nbuf;
 554
 555         LASSERT(tsi != NULL);
 556         tsc = sfw_find_test_case(tsi->tsi_service);
 557         LASSERT(tsc != NULL);
 558         svc = tsc->tsc_srv_service;
 559         LASSERT(svc != NULL);
 560
 561         nbuf = min(svc->sv_wi_total, tsi->tsi_loop) / svc->sv_ncpts;
 562         return max(SFW_TEST_WI_MIN, nbuf + SFW_TEST_WI_EXTRA);
 563 }
 564
 565 static int
 566 sfw_load_test(struct sfw_test_instance *tsi)
 567 {
 568         struct sfw_test_case    *tsc;
 569         struct srpc_service     *svc;
 570         int                     nbuf;
 571         int                     rc;
 572
 573         LASSERT(tsi != NULL);
 574         tsc = sfw_find_test_case(tsi->tsi_service);
 575         nbuf = sfw_test_buffers(tsi);
 576         LASSERT(tsc != NULL);
 577         svc = tsc->tsc_srv_service;
 578
 579         if (tsi->tsi_is_client) {
 580                 tsi->tsi_ops = tsc->tsc_cli_ops;
 581                 return 0;
 582         }
 583
 584         rc = srpc_service_add_buffers(svc, nbuf);
 585         if (rc != 0) {
 586                 CWARN("Failed to reserve enough buffers: "
 587                       "service %s, %d needed: %d\n", svc->sv_name, nbuf, rc);
 588                 /* NB: this error handler is not strictly correct, because
 589                  * it may release more buffers than already allocated,
 590                  * but it doesn't matter because request portal should
 591                  * be lazy portal and will grow buffers if necessary. */
 592                 srpc_service_remove_buffers(svc, nbuf);
 593                 return -ENOMEM;
 594         }
 595
 596         CDEBUG(D_NET, "Reserved %d buffers for test %s\n",
 597                nbuf * (srpc_serv_is_framework(svc) ?
 598                        1 : cfs_cpt_number(cfs_cpt_table)), svc->sv_name);
 599         return 0;
 600 }
 601
 602 static void
 603 sfw_unload_test(struct sfw_test_instance *tsi)
 604 {
 605         struct sfw_test_case *tsc;
 606
 607         LASSERT(tsi != NULL);
 608         tsc = sfw_find_test_case(tsi->tsi_service);
 609         LASSERT(tsc != NULL);
 610
 611         if (tsi->tsi_is_client)
 612                 return;
 613
 614         /* shrink buffers, because request portal is lazy portal
 615          * which can grow buffers at runtime so we may leave
 616          * some buffers behind, but never mind... */
 617         srpc_service_remove_buffers(tsc->tsc_srv_service,
 618                                     sfw_test_buffers(tsi));
 619         return;
 620 }
 621
 622 static void
 623 sfw_destroy_test_instance(struct sfw_test_instance *tsi)
 624 {
 625         struct srpc_client_rpc *rpc;
 626         struct sfw_test_unit *tsu;
 627
 628         if (!tsi->tsi_is_client) goto clean;
 629
 630         tsi->tsi_ops->tso_fini(tsi);
 631
 632         LASSERT(!tsi->tsi_stopping);
 633         LASSERT(list_empty(&tsi->tsi_active_rpcs));
 634         LASSERT(!sfw_test_active(tsi));
 635
 636         while (!list_empty(&tsi->tsi_units)) {
 637                 tsu = list_entry(tsi->tsi_units.next,
 638                                  struct sfw_test_unit, tsu_list);
 639                 list_del(&tsu->tsu_list);
 640                 LIBCFS_FREE(tsu, sizeof(*tsu));
 641         }
 642
 643         while (!list_empty(&tsi->tsi_free_rpcs)) {
 644                 rpc = list_entry(tsi->tsi_free_rpcs.next,
 645                                  struct srpc_client_rpc, crpc_list);
 646                 list_del(&rpc->crpc_list);
 647                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
 648         }
 649
 650 clean:
 651         sfw_unload_test(tsi);
 652         LIBCFS_FREE(tsi, sizeof(*tsi));
 653         return;
 654 }
 655
 656 static void
 657 sfw_destroy_batch(struct sfw_batch *tsb)
 658 {
 659         struct sfw_test_instance *tsi;
 660
 661         LASSERT(!sfw_batch_active(tsb));
 662         LASSERT(list_empty(&tsb->bat_list));
 663
 664         while (!list_empty(&tsb->bat_tests)) {
 665                 tsi = list_entry(tsb->bat_tests.next,
 666                                  struct sfw_test_instance, tsi_list);
 667                 list_del_init(&tsi->tsi_list);
 668                 sfw_destroy_test_instance(tsi);
 669         }
 670
 671         LIBCFS_FREE(tsb, sizeof(*tsb));
 672         return;
 673 }
 674
 675 static void
 676 sfw_destroy_session(struct sfw_session *sn)
 677 {
 678         struct sfw_batch *batch;
 679
 680         LASSERT(list_empty(&sn->sn_list));
 681         LASSERT(sn != sfw_data.fw_session);
 682
 683         while (!list_empty(&sn->sn_batches)) {
 684                 batch = list_entry(sn->sn_batches.next,
 685                                    struct sfw_batch, bat_list);
 686                 list_del_init(&batch->bat_list);
 687                 sfw_destroy_batch(batch);
 688         }
 689
 690         LIBCFS_FREE(sn, sizeof(*sn));
 691         atomic_dec(&sfw_data.fw_nzombies);
 692         return;
 693 }
 694
 695 static void
 696 sfw_unpack_addtest_req(struct srpc_msg *msg)
 697 {
 698         struct srpc_test_reqst *req = &msg->msg_body.tes_reqst;
 699
 700         LASSERT (msg->msg_type == SRPC_MSG_TEST_REQST);
 701         LASSERT (req->tsr_is_client);
 702
 703         if (msg->msg_magic == SRPC_MSG_MAGIC)
 704                 return; /* no flipping needed */
 705
 706         LASSERT (msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 707
 708         if (req->tsr_service == SRPC_SERVICE_BRW) {
 709                 if ((msg->msg_ses_feats & LST_FEAT_BULK_LEN) == 0) {
 710                         struct test_bulk_req *bulk = &req->tsr_u.bulk_v0;
 711
 712                         __swab32s(&bulk->blk_opc);
 713                         __swab32s(&bulk->blk_npg);
 714                         __swab32s(&bulk->blk_flags);
 715
 716                 } else {
 717                         struct test_bulk_req_v1 *bulk = &req->tsr_u.bulk_v1;
 718
 719                         __swab16s(&bulk->blk_opc);
 720                         __swab16s(&bulk->blk_flags);
 721                         __swab32s(&bulk->blk_offset);
 722                         __swab32s(&bulk->blk_len);
 723                 }
 724
 725                 return;
 726         }
 727
 728         if (req->tsr_service == SRPC_SERVICE_PING) {
 729                 struct test_ping_req *ping = &req->tsr_u.ping;
 730
 731                 __swab32s(&ping->png_size);
 732                 __swab32s(&ping->png_flags);
 733                 return;
 734         }
 735
 736         LBUG();
 737         return;
 738 }
 739
 740 static int
 741 sfw_add_test_instance(struct sfw_batch *tsb, struct srpc_server_rpc *rpc)
 742 {
 743         struct srpc_msg *msg = &rpc->srpc_reqstbuf->buf_msg;
 744         struct srpc_test_reqst *req = &msg->msg_body.tes_reqst;
 745         struct srpc_bulk *bk = rpc->srpc_bulk;
 746         int ndest = req->tsr_ndest;
 747         struct sfw_test_unit *tsu;
 748         struct sfw_test_instance *tsi;
 749         int i;
 750         int rc;
 751
 752         LIBCFS_ALLOC(tsi, sizeof(*tsi));
 753         if (tsi == NULL) {
 754                 CERROR ("Can't allocate test instance for batch: %llu\n",
 755                         tsb->bat_id.bat_id);
 756                 return -ENOMEM;
 757         }
 758
 759         spin_lock_init(&tsi->tsi_lock);
 760         atomic_set(&tsi->tsi_nactive, 0);
 761         INIT_LIST_HEAD(&tsi->tsi_units);
 762         INIT_LIST_HEAD(&tsi->tsi_free_rpcs);
 763         INIT_LIST_HEAD(&tsi->tsi_active_rpcs);
 764
 765         tsi->tsi_stopping      = 0;
 766         tsi->tsi_batch         = tsb;
 767         tsi->tsi_loop          = req->tsr_loop;
 768         tsi->tsi_concur        = req->tsr_concur;
 769         tsi->tsi_service       = req->tsr_service;
 770         tsi->tsi_is_client     = !!(req->tsr_is_client);
 771         tsi->tsi_stoptsu_onerr = !!(req->tsr_stop_onerr);
 772
 773         rc = sfw_load_test(tsi);
 774         if (rc != 0) {
 775                 LIBCFS_FREE(tsi, sizeof(*tsi));
 776                 return rc;
 777         }
 778
 779         LASSERT (!sfw_batch_active(tsb));
 780
 781         if (!tsi->tsi_is_client) {
 782                 /* it's test server, just add it to tsb */
 783                 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
 784                 return 0;
 785         }
 786
 787         LASSERT (bk != NULL);
 788         LASSERT (bk->bk_niov * SFW_ID_PER_PAGE >= (unsigned int)ndest);
 789         LASSERT((unsigned int)bk->bk_len >=
 790                 sizeof(struct lnet_process_id_packed) * ndest);
 791
 792         sfw_unpack_addtest_req(msg);
 793         memcpy(&tsi->tsi_u, &req->tsr_u, sizeof(tsi->tsi_u));
 794
 795         for (i = 0; i < ndest; i++) {
 796                 struct lnet_process_id_packed *dests;
 797                 struct lnet_process_id_packed  id;
 798                 int                       j;
 799
 800                 dests = page_address(bk->bk_iovs[i / SFW_ID_PER_PAGE].kiov_page);
 801                 LASSERT (dests != NULL);  /* my pages are within KVM always */
 802                 id = dests[i % SFW_ID_PER_PAGE];
 803                 if (msg->msg_magic != SRPC_MSG_MAGIC)
 804                         sfw_unpack_id(id);
 805
 806                 for (j = 0; j < tsi->tsi_concur; j++) {
 807                         LIBCFS_ALLOC(tsu, sizeof(*tsu));
 808                         if (tsu == NULL) {
 809                                 rc = -ENOMEM;
 810                                 CERROR ("Can't allocate tsu for %d\n",
 811                                         tsi->tsi_service);
 812                                 goto error;
 813                         }
 814
 815                         tsu->tsu_dest.nid = id.nid;
 816                         tsu->tsu_dest.pid = id.pid;
 817                         tsu->tsu_instance = tsi;
 818                         tsu->tsu_private  = NULL;
 819                         list_add_tail(&tsu->tsu_list, &tsi->tsi_units);
 820                 }
 821         }
 822
 823         rc = tsi->tsi_ops->tso_init(tsi);
 824         if (rc == 0) {
 825                 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
 826                 return 0;
 827         }
 828
 829 error:
 830         LASSERT(rc != 0);
 831         sfw_destroy_test_instance(tsi);
 832         return rc;
 833 }
 834
 835 static void
 836 sfw_test_unit_done(struct sfw_test_unit *tsu)
 837 {
 838         struct sfw_test_instance *tsi = tsu->tsu_instance;
 839         struct sfw_batch *tsb = tsi->tsi_batch;
 840         struct sfw_session *sn = tsb->bat_session;
 841
 842         LASSERT (sfw_test_active(tsi));
 843
 844         if (!atomic_dec_and_test(&tsi->tsi_nactive))
 845                 return;
 846
 847         /* the test instance is done */
 848         spin_lock(&tsi->tsi_lock);
 849
 850         tsi->tsi_stopping = 0;
 851
 852         spin_unlock(&tsi->tsi_lock);
 853
 854         spin_lock(&sfw_data.fw_lock);
 855
 856         if (!atomic_dec_and_test(&tsb->bat_nactive) ||/* tsb still active */
 857             sn == sfw_data.fw_session) {                  /* sn also active */
 858                 spin_unlock(&sfw_data.fw_lock);
 859                 return;
 860         }
 861
 862         LASSERT(!list_empty(&sn->sn_list)); /* I'm a zombie! */
 863
 864         list_for_each_entry(tsb, &sn->sn_batches, bat_list) {
 865                 if (sfw_batch_active(tsb)) {
 866                         spin_unlock(&sfw_data.fw_lock);
 867                         return;
 868                 }
 869         }
 870
 871         list_del_init(&sn->sn_list);
 872         spin_unlock(&sfw_data.fw_lock);
 873
 874         sfw_destroy_session(sn);
 875         return;
 876 }
 877
 878 static void
 879 sfw_test_rpc_done(struct srpc_client_rpc *rpc)
 880 {
 881         struct sfw_test_unit *tsu = rpc->crpc_priv;
 882         struct sfw_test_instance *tsi = tsu->tsu_instance;
 883         int                  done = 0;
 884
 885         tsi->tsi_ops->tso_done_rpc(tsu, rpc);
 886
 887         spin_lock(&tsi->tsi_lock);
 888
 889         LASSERT(sfw_test_active(tsi));
 890         LASSERT(!list_empty(&rpc->crpc_list));
 891
 892         list_del_init(&rpc->crpc_list);
 893
 894         /* batch is stopping or loop is done or get error */
 895         if (tsi->tsi_stopping ||
 896             tsu->tsu_loop == 0 ||
 897             (rpc->crpc_status != 0 && tsi->tsi_stoptsu_onerr))
 898                 done = 1;
 899
 900         /* dec ref for poster */
 901         srpc_client_rpc_decref(rpc);
 902
 903         spin_unlock(&tsi->tsi_lock);
 904
 905         if (!done) {
 906                 swi_schedule_workitem(&tsu->tsu_worker);
 907                 return;
 908         }
 909
 910         sfw_test_unit_done(tsu);
 911         return;
 912 }
 913
 914 int
 915 sfw_create_test_rpc(struct sfw_test_unit *tsu, struct lnet_process_id peer,
 916                     unsigned features, int nblk, int blklen,
 917                     struct srpc_client_rpc **rpcpp)
 918 {
 919         struct srpc_client_rpc *rpc = NULL;
 920         struct sfw_test_instance *tsi = tsu->tsu_instance;
 921
 922         spin_lock(&tsi->tsi_lock);
 923
 924         LASSERT (sfw_test_active(tsi));
 925
 926         if (!list_empty(&tsi->tsi_free_rpcs)) {
 927                 /* pick request from buffer */
 928                 rpc = list_entry(tsi->tsi_free_rpcs.next,
 929                                  struct srpc_client_rpc, crpc_list);
 930                 LASSERT(nblk == rpc->crpc_bulk.bk_niov);
 931                 list_del_init(&rpc->crpc_list);
 932         }
 933
 934         spin_unlock(&tsi->tsi_lock);
 935
 936         if (rpc == NULL) {
 937                 rpc = srpc_create_client_rpc(peer, tsi->tsi_service, nblk,
 938                                              blklen, sfw_test_rpc_done,
 939                                              sfw_test_rpc_fini, tsu);
 940         } else {
 941                 srpc_init_client_rpc(rpc, peer, tsi->tsi_service, nblk,
 942                                      blklen, sfw_test_rpc_done,
 943                                      sfw_test_rpc_fini, tsu);
 944         }
 945
 946         if (rpc == NULL) {
 947                 CERROR("Can't create rpc for test %d\n", tsi->tsi_service);
 948                 return -ENOMEM;
 949         }
 950
 951         rpc->crpc_reqstmsg.msg_ses_feats = features;
 952         *rpcpp = rpc;
 953
 954         return 0;
 955 }
 956
 957 static int
 958 sfw_run_test(struct swi_workitem *wi)
 959 {
 960         struct sfw_test_unit *tsu = container_of(wi, struct sfw_test_unit, tsu_worker);
 961         struct sfw_test_instance *tsi = tsu->tsu_instance;
 962         struct srpc_client_rpc *rpc = NULL;
 963
 964         LASSERT (wi == &tsu->tsu_worker);
 965
 966         if (tsi->tsi_ops->tso_prep_rpc(tsu, tsu->tsu_dest, &rpc) != 0) {
 967                 LASSERT (rpc == NULL);
 968                 goto test_done;
 969         }
 970
 971         LASSERT (rpc != NULL);
 972
 973         spin_lock(&tsi->tsi_lock);
 974
 975         if (tsi->tsi_stopping) {
 976                 list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
 977                 spin_unlock(&tsi->tsi_lock);
 978                 goto test_done;
 979         }
 980
 981         if (tsu->tsu_loop > 0)
 982                 tsu->tsu_loop--;
 983
 984         list_add_tail(&rpc->crpc_list, &tsi->tsi_active_rpcs);
 985         spin_unlock(&tsi->tsi_lock);
 986
 987         spin_lock(&rpc->crpc_lock);
 988         rpc->crpc_timeout = rpc_timeout;
 989         srpc_post_rpc(rpc);
 990         spin_unlock(&rpc->crpc_lock);
 991         return 0;
 992
 993 test_done:
 994         /*
 995          * No one can schedule me now since:
 996          * - previous RPC, if any, has done and
 997          * - no new RPC is initiated.
 998          * - my batch is still active; no one can run it again now.
 999          * Cancel pending schedules and prevent future schedule attempts:
1000          */
1001         swi_exit_workitem(wi);
1002         sfw_test_unit_done(tsu);
1003         return 1;
1004 }
1005
1006 static int
1007 sfw_run_batch(struct sfw_batch *tsb)
1008 {
1009         struct swi_workitem *wi;
1010         struct sfw_test_unit *tsu;
1011         struct sfw_test_instance *tsi;
1012
1013         if (sfw_batch_active(tsb)) {
1014                 CDEBUG(D_NET, "Batch already active: %llu (%d)\n",
1015                        tsb->bat_id.bat_id, atomic_read(&tsb->bat_nactive));
1016                 return 0;
1017         }
1018
1019         list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1020                 if (!tsi->tsi_is_client)        /* skip server instances */
1021                         continue;
1022
1023                 LASSERT(!tsi->tsi_stopping);
1024                 LASSERT(!sfw_test_active(tsi));
1025
1026                 atomic_inc(&tsb->bat_nactive);
1027
1028                 list_for_each_entry(tsu, &tsi->tsi_units, tsu_list) {
1029                         atomic_inc(&tsi->tsi_nactive);
1030                         tsu->tsu_loop = tsi->tsi_loop;
1031                         wi = &tsu->tsu_worker;
1032                         swi_init_workitem(wi, sfw_run_test,
1033                                           lst_sched_test[lnet_cpt_of_nid(tsu->tsu_dest.nid, NULL)]);
1034                         swi_schedule_workitem(wi);
1035                 }
1036         }
1037
1038         return 0;
1039 }
1040
1041 static int
1042 sfw_stop_batch(struct sfw_batch *tsb, int force)
1043 {
1044         struct sfw_test_instance *tsi;
1045         struct srpc_client_rpc *rpc;
1046
1047         if (!sfw_batch_active(tsb)) {
1048                 CDEBUG(D_NET, "Batch %llu inactive\n", tsb->bat_id.bat_id);
1049                 return 0;
1050         }
1051
1052         list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1053                 spin_lock(&tsi->tsi_lock);
1054
1055                 if (!tsi->tsi_is_client ||
1056                     !sfw_test_active(tsi) || tsi->tsi_stopping) {
1057                         spin_unlock(&tsi->tsi_lock);
1058                         continue;
1059                 }
1060
1061                 tsi->tsi_stopping = 1;
1062
1063                 if (!force) {
1064                         spin_unlock(&tsi->tsi_lock);
1065                         continue;
1066                 }
1067
1068                 /* abort launched rpcs in the test */
1069                 list_for_each_entry(rpc, &tsi->tsi_active_rpcs, crpc_list) {
1070                         spin_lock(&rpc->crpc_lock);
1071
1072                         srpc_abort_rpc(rpc, -EINTR);
1073
1074                         spin_unlock(&rpc->crpc_lock);
1075                 }
1076
1077                 spin_unlock(&tsi->tsi_lock);
1078         }
1079
1080         return 0;
1081 }
1082
1083 static int
1084 sfw_query_batch(struct sfw_batch *tsb, int testidx,
1085                 struct srpc_batch_reply *reply)
1086 {
1087         struct sfw_test_instance *tsi;
1088
1089         if (testidx < 0)
1090                 return -EINVAL;
1091
1092         if (testidx == 0) {
1093                 reply->bar_active = atomic_read(&tsb->bat_nactive);
1094                 return 0;
1095         }
1096
1097         list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1098                 if (testidx-- > 1)
1099                         continue;
1100
1101                 reply->bar_active = atomic_read(&tsi->tsi_nactive);
1102                 return 0;
1103         }
1104
1105         return -ENOENT;
1106 }
1107
1108 void
1109 sfw_free_pages(struct srpc_server_rpc *rpc)
1110 {
1111         srpc_free_bulk(rpc->srpc_bulk);
1112         rpc->srpc_bulk = NULL;
1113 }
1114
1115 int
1116 sfw_alloc_pages(struct srpc_server_rpc *rpc, int cpt, int npages, int len,
1117                 int sink)
1118 {
1119         LASSERT(rpc->srpc_bulk == NULL);
1120         LASSERT(npages > 0 && npages <= LNET_MAX_IOV);
1121
1122         rpc->srpc_bulk = srpc_alloc_bulk(cpt, 0, npages, len, sink);
1123         if (rpc->srpc_bulk == NULL)
1124                 return -ENOMEM;
1125
1126         return 0;
1127 }
1128
1129 static int
1130 sfw_add_test(struct srpc_server_rpc *rpc)
1131 {
1132         struct sfw_session *sn = sfw_data.fw_session;
1133         struct srpc_test_reply *reply = &rpc->srpc_replymsg.msg_body.tes_reply;
1134         struct srpc_test_reqst *request;
1135         int rc;
1136         struct sfw_batch *bat;
1137
1138         request = &rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst;
1139         reply->tsr_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
1140
1141         if (request->tsr_loop == 0 ||
1142             request->tsr_concur == 0 ||
1143             request->tsr_sid.ses_nid == LNET_NID_ANY ||
1144             request->tsr_ndest > SFW_MAX_NDESTS ||
1145             (request->tsr_is_client && request->tsr_ndest == 0) ||
1146             request->tsr_concur > SFW_MAX_CONCUR ||
1147             request->tsr_service > SRPC_SERVICE_MAX_ID ||
1148             request->tsr_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID) {
1149                 reply->tsr_status = EINVAL;
1150                 return 0;
1151         }
1152
1153         if (sn == NULL || !sfw_sid_equal(request->tsr_sid, sn->sn_id) ||
1154             sfw_find_test_case(request->tsr_service) == NULL) {
1155                 reply->tsr_status = ENOENT;
1156                 return 0;
1157         }
1158
1159         bat = sfw_bid2batch(request->tsr_bid);
1160         if (bat == NULL) {
1161                 CERROR("dropping RPC %s from %s under memory pressure\n",
1162                         rpc->srpc_scd->scd_svc->sv_name,
1163                         libcfs_id2str(rpc->srpc_peer));
1164                 return -ENOMEM;
1165         }
1166
1167         if (sfw_batch_active(bat)) {
1168                 reply->tsr_status = EBUSY;
1169                 return 0;
1170         }
1171
1172         if (request->tsr_is_client && rpc->srpc_bulk == NULL) {
1173                 /* rpc will be resumed later in sfw_bulk_ready */
1174                 int     npg = sfw_id_pages(request->tsr_ndest);
1175                 int     len;
1176
1177                 if ((sn->sn_features & LST_FEAT_BULK_LEN) == 0) {
1178                         len = npg * PAGE_SIZE;
1179
1180                 } else  {
1181                         len = sizeof(struct lnet_process_id_packed) *
1182                               request->tsr_ndest;
1183                 }
1184
1185                 return sfw_alloc_pages(rpc, CFS_CPT_ANY, npg, len, 1);
1186         }
1187
1188         rc = sfw_add_test_instance(bat, rpc);
1189         CDEBUG (rc == 0 ? D_NET : D_WARNING,
1190                 "%s test: sv %d %s, loop %d, concur %d, ndest %d\n",
1191                 rc == 0 ? "Added" : "Failed to add", request->tsr_service,
1192                 request->tsr_is_client ? "client" : "server",
1193                 request->tsr_loop, request->tsr_concur, request->tsr_ndest);
1194
1195         reply->tsr_status = (rc < 0) ? -rc : rc;
1196         return 0;
1197 }
1198
1199 static int
1200 sfw_control_batch(struct srpc_batch_reqst *request,
1201                   struct srpc_batch_reply *reply)
1202 {
1203         struct sfw_session *sn = sfw_data.fw_session;
1204         int            rc = 0;
1205         struct sfw_batch *bat;
1206
1207         reply->bar_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
1208
1209         if (sn == NULL || !sfw_sid_equal(request->bar_sid, sn->sn_id)) {
1210                 reply->bar_status = ESRCH;
1211                 return 0;
1212         }
1213
1214         bat = sfw_find_batch(request->bar_bid);
1215         if (bat == NULL) {
1216                 reply->bar_status = ENOENT;
1217                 return 0;
1218         }
1219
1220         switch (request->bar_opc) {
1221         case SRPC_BATCH_OPC_RUN:
1222                 rc = sfw_run_batch(bat);
1223                 break;
1224
1225         case SRPC_BATCH_OPC_STOP:
1226                 rc = sfw_stop_batch(bat, request->bar_arg);
1227                 break;
1228
1229         case SRPC_BATCH_OPC_QUERY:
1230                 rc = sfw_query_batch(bat, request->bar_testidx, reply);
1231                 break;
1232
1233         default:
1234                 return -EINVAL; /* drop it */
1235         }
1236
1237         reply->bar_status = (rc < 0) ? -rc : rc;
1238         return 0;
1239 }
1240
1241 static int
1242 sfw_handle_server_rpc(struct srpc_server_rpc *rpc)
1243 {
1244         struct srpc_service     *sv = rpc->srpc_scd->scd_svc;
1245         struct srpc_msg     *reply      = &rpc->srpc_replymsg;
1246         struct srpc_msg     *request    = &rpc->srpc_reqstbuf->buf_msg;
1247         unsigned        features = LST_FEATS_MASK;
1248         int             rc = 0;
1249
1250         LASSERT(sfw_data.fw_active_srpc == NULL);
1251         LASSERT(sv->sv_id <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1252
1253         spin_lock(&sfw_data.fw_lock);
1254
1255         if (sfw_data.fw_shuttingdown) {
1256                 spin_unlock(&sfw_data.fw_lock);
1257                 return -ESHUTDOWN;
1258         }
1259
1260         /* Remove timer to avoid racing with it or expiring active session */
1261         if (sfw_del_session_timer() != 0) {
1262                 CERROR("dropping RPC %s from %s: racing with expiry timer\n",
1263                        sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1264                 spin_unlock(&sfw_data.fw_lock);
1265                 return -EAGAIN;
1266         }
1267
1268         sfw_data.fw_active_srpc = rpc;
1269         spin_unlock(&sfw_data.fw_lock);
1270
1271         sfw_unpack_message(request);
1272         LASSERT(request->msg_type == srpc_service2request(sv->sv_id));
1273
1274         /* rpc module should have checked this */
1275         LASSERT(request->msg_version == SRPC_MSG_VERSION);
1276
1277         if (sv->sv_id != SRPC_SERVICE_MAKE_SESSION &&
1278             sv->sv_id != SRPC_SERVICE_DEBUG) {
1279                 struct sfw_session *sn = sfw_data.fw_session;
1280
1281                 if (sn != NULL &&
1282                     sn->sn_features != request->msg_ses_feats) {
1283                         CNETERR("Features of framework RPC don't match "
1284                                 "features of current session: %x/%x\n",
1285                                 request->msg_ses_feats, sn->sn_features);
1286                         reply->msg_body.reply.status = EPROTO;
1287                         reply->msg_body.reply.sid    = sn->sn_id;
1288                         goto out;
1289                 }
1290
1291         } else if ((request->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
1292                 /* NB: at this point, old version will ignore features and
1293                  * create new session anyway, so console should be able
1294                  * to handle this */
1295                 reply->msg_body.reply.status = EPROTO;
1296                 goto out;
1297         }
1298
1299         switch(sv->sv_id) {
1300         default:
1301                 LBUG ();
1302         case SRPC_SERVICE_TEST:
1303                 rc = sfw_add_test(rpc);
1304                 break;
1305
1306         case SRPC_SERVICE_BATCH:
1307                 rc = sfw_control_batch(&request->msg_body.bat_reqst,
1308                                        &reply->msg_body.bat_reply);
1309                 break;
1310
1311         case SRPC_SERVICE_QUERY_STAT:
1312                 rc = sfw_get_stats(&request->msg_body.stat_reqst,
1313                                    &reply->msg_body.stat_reply);
1314                 break;
1315
1316         case SRPC_SERVICE_DEBUG:
1317                 rc = sfw_debug_session(&request->msg_body.dbg_reqst,
1318                                        &reply->msg_body.dbg_reply);
1319                 break;
1320
1321         case SRPC_SERVICE_MAKE_SESSION:
1322                 rc = sfw_make_session(&request->msg_body.mksn_reqst,
1323                                       &reply->msg_body.mksn_reply);
1324                 break;
1325
1326         case SRPC_SERVICE_REMOVE_SESSION:
1327                 rc = sfw_remove_session(&request->msg_body.rmsn_reqst,
1328                                         &reply->msg_body.rmsn_reply);
1329                 break;
1330         }
1331
1332         if (sfw_data.fw_session != NULL)
1333                 features = sfw_data.fw_session->sn_features;
1334  out:
1335         reply->msg_ses_feats = features;
1336         rpc->srpc_done = sfw_server_rpc_done;
1337         spin_lock(&sfw_data.fw_lock);
1338
1339         if (!sfw_data.fw_shuttingdown)
1340                 sfw_add_session_timer();
1341
1342         sfw_data.fw_active_srpc = NULL;
1343         spin_unlock(&sfw_data.fw_lock);
1344         return rc;
1345 }
1346
1347 static int
1348 sfw_bulk_ready(struct srpc_server_rpc *rpc, int status)
1349 {
1350         struct srpc_service     *sv = rpc->srpc_scd->scd_svc;
1351         int                     rc;
1352
1353         LASSERT(rpc->srpc_bulk != NULL);
1354         LASSERT(sv->sv_id == SRPC_SERVICE_TEST);
1355         LASSERT(sfw_data.fw_active_srpc == NULL);
1356         LASSERT(rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst.tsr_is_client);
1357
1358         spin_lock(&sfw_data.fw_lock);
1359
1360         if (status != 0) {
1361                 CERROR("Bulk transfer failed for RPC: "
1362                        "service %s, peer %s, status %d\n",
1363                        sv->sv_name, libcfs_id2str(rpc->srpc_peer), status);
1364                 spin_unlock(&sfw_data.fw_lock);
1365                 return -EIO;
1366         }
1367
1368         if (sfw_data.fw_shuttingdown) {
1369                 spin_unlock(&sfw_data.fw_lock);
1370                 return -ESHUTDOWN;
1371         }
1372
1373         if (sfw_del_session_timer() != 0) {
1374                 CERROR("dropping RPC %s from %s: racing with expiry timer\n",
1375                        sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1376                 spin_unlock(&sfw_data.fw_lock);
1377                 return -EAGAIN;
1378         }
1379
1380         sfw_data.fw_active_srpc = rpc;
1381         spin_unlock(&sfw_data.fw_lock);
1382
1383         rc = sfw_add_test(rpc);
1384
1385         spin_lock(&sfw_data.fw_lock);
1386
1387         if (!sfw_data.fw_shuttingdown)
1388                 sfw_add_session_timer();
1389
1390         sfw_data.fw_active_srpc = NULL;
1391         spin_unlock(&sfw_data.fw_lock);
1392         return rc;
1393 }
1394
1395 struct srpc_client_rpc *
1396 sfw_create_rpc(struct lnet_process_id peer, int service,
1397                unsigned features, int nbulkiov, int bulklen,
1398                void (*done)(struct srpc_client_rpc *), void *priv)
1399 {
1400         struct srpc_client_rpc *rpc = NULL;
1401
1402         spin_lock(&sfw_data.fw_lock);
1403
1404         LASSERT (!sfw_data.fw_shuttingdown);
1405         LASSERT (service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1406
1407         if (nbulkiov == 0 && !list_empty(&sfw_data.fw_zombie_rpcs)) {
1408                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1409                                      struct srpc_client_rpc, crpc_list);
1410                 list_del(&rpc->crpc_list);
1411
1412                 srpc_init_client_rpc(rpc, peer, service, 0, 0,
1413                                      done, sfw_client_rpc_fini, priv);
1414         }
1415
1416         spin_unlock(&sfw_data.fw_lock);
1417
1418         if (rpc == NULL) {
1419                 rpc = srpc_create_client_rpc(peer, service,
1420                                              nbulkiov, bulklen, done,
1421                                              nbulkiov != 0 ?  NULL :
1422                                              sfw_client_rpc_fini,
1423                                              priv);
1424         }
1425
1426         if (rpc != NULL) /* "session" is concept in framework */
1427                 rpc->crpc_reqstmsg.msg_ses_feats = features;
1428
1429         return rpc;
1430 }
1431
1432 void
1433 sfw_unpack_message(struct srpc_msg *msg)
1434 {
1435         if (msg->msg_magic == SRPC_MSG_MAGIC)
1436                 return; /* no flipping needed */
1437
1438         /* srpc module should guarantee I wouldn't get crap */
1439         LASSERT (msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
1440
1441         if (msg->msg_type == SRPC_MSG_STAT_REQST) {
1442                 struct srpc_stat_reqst *req = &msg->msg_body.stat_reqst;
1443
1444                 __swab32s(&req->str_type);
1445                 __swab64s(&req->str_rpyid);
1446                 sfw_unpack_sid(req->str_sid);
1447                 return;
1448         }
1449
1450         if (msg->msg_type == SRPC_MSG_STAT_REPLY) {
1451                 struct srpc_stat_reply *rep = &msg->msg_body.stat_reply;
1452
1453                 __swab32s(&rep->str_status);
1454                 sfw_unpack_sid(rep->str_sid);
1455                 sfw_unpack_fw_counters(rep->str_fw);
1456                 sfw_unpack_rpc_counters(rep->str_rpc);
1457                 sfw_unpack_lnet_counters(rep->str_lnet);
1458                 return;
1459         }
1460
1461         if (msg->msg_type == SRPC_MSG_MKSN_REQST) {
1462                 struct srpc_mksn_reqst *req = &msg->msg_body.mksn_reqst;
1463
1464                 __swab64s(&req->mksn_rpyid);
1465                 __swab32s(&req->mksn_force);
1466                 sfw_unpack_sid(req->mksn_sid);
1467                 return;
1468         }
1469
1470         if (msg->msg_type == SRPC_MSG_MKSN_REPLY) {
1471                 struct srpc_mksn_reply *rep = &msg->msg_body.mksn_reply;
1472
1473                 __swab32s(&rep->mksn_status);
1474                 __swab32s(&rep->mksn_timeout);
1475                 sfw_unpack_sid(rep->mksn_sid);
1476                 return;
1477         }
1478
1479         if (msg->msg_type == SRPC_MSG_RMSN_REQST) {
1480                 struct srpc_rmsn_reqst *req = &msg->msg_body.rmsn_reqst;
1481
1482                 __swab64s(&req->rmsn_rpyid);
1483                 sfw_unpack_sid(req->rmsn_sid);
1484                 return;
1485         }
1486
1487         if (msg->msg_type == SRPC_MSG_RMSN_REPLY) {
1488                 struct srpc_rmsn_reply *rep = &msg->msg_body.rmsn_reply;
1489
1490                 __swab32s(&rep->rmsn_status);
1491                 sfw_unpack_sid(rep->rmsn_sid);
1492                 return;
1493         }
1494
1495         if (msg->msg_type == SRPC_MSG_DEBUG_REQST) {
1496                 struct srpc_debug_reqst *req = &msg->msg_body.dbg_reqst;
1497
1498                 __swab64s(&req->dbg_rpyid);
1499                 __swab32s(&req->dbg_flags);
1500                 sfw_unpack_sid(req->dbg_sid);
1501                 return;
1502         }
1503
1504         if (msg->msg_type == SRPC_MSG_DEBUG_REPLY) {
1505                 struct srpc_debug_reply *rep = &msg->msg_body.dbg_reply;
1506
1507                 __swab32s(&rep->dbg_nbatch);
1508                 __swab32s(&rep->dbg_timeout);
1509                 sfw_unpack_sid(rep->dbg_sid);
1510                 return;
1511         }
1512
1513         if (msg->msg_type == SRPC_MSG_BATCH_REQST) {
1514                 struct srpc_batch_reqst *req = &msg->msg_body.bat_reqst;
1515
1516                 __swab32s(&req->bar_opc);
1517                 __swab64s(&req->bar_rpyid);
1518                 __swab32s(&req->bar_testidx);
1519                 __swab32s(&req->bar_arg);
1520                 sfw_unpack_sid(req->bar_sid);
1521                 __swab64s(&req->bar_bid.bat_id);
1522                 return;
1523         }
1524
1525         if (msg->msg_type == SRPC_MSG_BATCH_REPLY) {
1526                 struct srpc_batch_reply *rep = &msg->msg_body.bat_reply;
1527
1528                 __swab32s(&rep->bar_status);
1529                 sfw_unpack_sid(rep->bar_sid);
1530                 return;
1531         }
1532
1533         if (msg->msg_type == SRPC_MSG_TEST_REQST) {
1534                 struct srpc_test_reqst *req = &msg->msg_body.tes_reqst;
1535
1536                 __swab64s(&req->tsr_rpyid);
1537                 __swab64s(&req->tsr_bulkid);
1538                 __swab32s(&req->tsr_loop);
1539                 __swab32s(&req->tsr_ndest);
1540                 __swab32s(&req->tsr_concur);
1541                 __swab32s(&req->tsr_service);
1542                 sfw_unpack_sid(req->tsr_sid);
1543                 __swab64s(&req->tsr_bid.bat_id);
1544                 return;
1545         }
1546
1547         if (msg->msg_type == SRPC_MSG_TEST_REPLY) {
1548                 struct srpc_test_reply *rep = &msg->msg_body.tes_reply;
1549
1550                 __swab32s(&rep->tsr_status);
1551                 sfw_unpack_sid(rep->tsr_sid);
1552                 return;
1553         }
1554
1555         if (msg->msg_type == SRPC_MSG_JOIN_REQST) {
1556                 struct srpc_join_reqst *req = &msg->msg_body.join_reqst;
1557
1558                 __swab64s(&req->join_rpyid);
1559                 sfw_unpack_sid(req->join_sid);
1560                 return;
1561         }
1562
1563         if (msg->msg_type == SRPC_MSG_JOIN_REPLY) {
1564                 struct srpc_join_reply *rep = &msg->msg_body.join_reply;
1565
1566                 __swab32s(&rep->join_status);
1567                 __swab32s(&rep->join_timeout);
1568                 sfw_unpack_sid(rep->join_sid);
1569                 return;
1570         }
1571
1572         LBUG ();
1573         return;
1574 }
1575
1576 void
1577 sfw_abort_rpc(struct srpc_client_rpc *rpc)
1578 {
1579         LASSERT(atomic_read(&rpc->crpc_refcount) > 0);
1580         LASSERT(rpc->crpc_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1581
1582         spin_lock(&rpc->crpc_lock);
1583         srpc_abort_rpc(rpc, -EINTR);
1584         spin_unlock(&rpc->crpc_lock);
1585         return;
1586 }
1587
1588 void
1589 sfw_post_rpc(struct srpc_client_rpc *rpc)
1590 {
1591         spin_lock(&rpc->crpc_lock);
1592
1593         LASSERT(!rpc->crpc_closed);
1594         LASSERT(!rpc->crpc_aborted);
1595         LASSERT(list_empty(&rpc->crpc_list));
1596         LASSERT(!sfw_data.fw_shuttingdown);
1597
1598         rpc->crpc_timeout = rpc_timeout;
1599         srpc_post_rpc(rpc);
1600
1601         spin_unlock(&rpc->crpc_lock);
1602         return;
1603 }
1604
1605 static struct srpc_service sfw_services[] = {
1606         { .sv_id = SRPC_SERVICE_DEBUG,          .sv_name = "debug", },
1607         { .sv_id = SRPC_SERVICE_QUERY_STAT,     .sv_name = "query stats", },
1608         { .sv_id = SRPC_SERVICE_MAKE_SESSION,   .sv_name = "make session", },
1609         { .sv_id = SRPC_SERVICE_REMOVE_SESSION, .sv_name = "remove session", },
1610         { .sv_id = SRPC_SERVICE_BATCH,          .sv_name = "batch service", },
1611         { .sv_id = SRPC_SERVICE_TEST,           .sv_name = "test service", },
1612         { .sv_id = 0, } };
1613
1614 int
1615 sfw_startup (void)
1616 {
1617         int              i;
1618         int              rc;
1619         int              error;
1620         struct srpc_service *sv;
1621         struct sfw_test_case *tsc;
1622
1623
1624         if (session_timeout < 0) {
1625                 CERROR ("Session timeout must be non-negative: %d\n",
1626                         session_timeout);
1627                 return -EINVAL;
1628         }
1629
1630         if (rpc_timeout < 0) {
1631                 CERROR ("RPC timeout must be non-negative: %d\n",
1632                         rpc_timeout);
1633                 return -EINVAL;
1634         }
1635
1636         if (session_timeout == 0)
1637                 CWARN ("Zero session_timeout specified "
1638                        "- test sessions never expire.\n");
1639
1640         if (rpc_timeout == 0)
1641                 CWARN ("Zero rpc_timeout specified "
1642                        "- test RPC never expire.\n");
1643
1644         memset(&sfw_data, 0, sizeof(struct smoketest_framework));
1645
1646         sfw_data.fw_session     = NULL;
1647         sfw_data.fw_active_srpc = NULL;
1648         spin_lock_init(&sfw_data.fw_lock);
1649         atomic_set(&sfw_data.fw_nzombies, 0);
1650         INIT_LIST_HEAD(&sfw_data.fw_tests);
1651         INIT_LIST_HEAD(&sfw_data.fw_zombie_rpcs);
1652         INIT_LIST_HEAD(&sfw_data.fw_zombie_sessions);
1653
1654         brw_init_test_client();
1655         brw_init_test_service();
1656         rc = sfw_register_test(&brw_test_service, &brw_test_client);
1657         LASSERT (rc == 0);
1658
1659         ping_init_test_client();
1660         ping_init_test_service();
1661         rc = sfw_register_test(&ping_test_service, &ping_test_client);
1662         LASSERT (rc == 0);
1663
1664         error = 0;
1665         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1666                 sv = tsc->tsc_srv_service;
1667
1668                 rc = srpc_add_service(sv);
1669                 LASSERT(rc != -EBUSY);
1670                 if (rc != 0) {
1671                         CWARN("Failed to add %s service: %d\n",
1672                               sv->sv_name, rc);
1673                         error = rc;
1674                 }
1675         }
1676
1677         for (i = 0; ; i++) {
1678                 sv = &sfw_services[i];
1679                 if (sv->sv_name == NULL) break;
1680
1681                 sv->sv_bulk_ready = NULL;
1682                 sv->sv_handler    = sfw_handle_server_rpc;
1683                 sv->sv_wi_total   = SFW_FRWK_WI_MAX;
1684                 if (sv->sv_id == SRPC_SERVICE_TEST)
1685                         sv->sv_bulk_ready = sfw_bulk_ready;
1686
1687                 rc = srpc_add_service(sv);
1688                 LASSERT (rc != -EBUSY);
1689                 if (rc != 0) {
1690                         CWARN ("Failed to add %s service: %d\n",
1691                                sv->sv_name, rc);
1692                         error = rc;
1693                 }
1694
1695                 /* about to sfw_shutdown, no need to add buffer */
1696                 if (error) continue;
1697
1698                 rc = srpc_service_add_buffers(sv, sv->sv_wi_total);
1699                 if (rc != 0) {
1700                         CWARN("Failed to reserve enough buffers: "
1701                               "service %s, %d needed: %d\n",
1702                               sv->sv_name, sv->sv_wi_total, rc);
1703                         error = -ENOMEM;
1704                 }
1705         }
1706
1707         if (error != 0)
1708                 sfw_shutdown();
1709         return error;
1710 }
1711
1712 void
1713 sfw_shutdown (void)
1714 {
1715         struct srpc_service *sv;
1716         struct sfw_test_case *tsc;
1717         int              i;
1718
1719         spin_lock(&sfw_data.fw_lock);
1720
1721         sfw_data.fw_shuttingdown = 1;
1722         lst_wait_until(sfw_data.fw_active_srpc == NULL, sfw_data.fw_lock,
1723                        "waiting for active RPC to finish.\n");
1724
1725         if (sfw_del_session_timer() != 0)
1726                 lst_wait_until(sfw_data.fw_session == NULL, sfw_data.fw_lock,
1727                                "waiting for session timer to explode.\n");
1728
1729         sfw_deactivate_session();
1730         lst_wait_until(atomic_read(&sfw_data.fw_nzombies) == 0,
1731                        sfw_data.fw_lock,
1732                        "waiting for %d zombie sessions to die.\n",
1733                        atomic_read(&sfw_data.fw_nzombies));
1734
1735         spin_unlock(&sfw_data.fw_lock);
1736
1737         for (i = 0; ; i++) {
1738                 sv = &sfw_services[i];
1739                 if (sv->sv_name == NULL)
1740                         break;
1741
1742                 srpc_shutdown_service(sv);
1743                 srpc_remove_service(sv);
1744         }
1745
1746         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1747                 sv = tsc->tsc_srv_service;
1748                 srpc_shutdown_service(sv);
1749                 srpc_remove_service(sv);
1750         }
1751
1752         while (!list_empty(&sfw_data.fw_zombie_rpcs)) {
1753                 struct srpc_client_rpc *rpc;
1754
1755                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1756                                  struct srpc_client_rpc, crpc_list);
1757                 list_del(&rpc->crpc_list);
1758
1759                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
1760         }
1761
1762         for (i = 0; ; i++) {
1763                 sv = &sfw_services[i];
1764                 if (sv->sv_name == NULL)
1765                         break;
1766
1767                 srpc_wait_service_shutdown(sv);
1768         }
1769
1770         while (!list_empty(&sfw_data.fw_tests)) {
1771                 tsc = list_entry(sfw_data.fw_tests.next,
1772                                  struct sfw_test_case, tsc_list);
1773
1774                 srpc_wait_service_shutdown(tsc->tsc_srv_service);
1775
1776                 list_del(&tsc->tsc_list);
1777                 LIBCFS_FREE(tsc, sizeof(*tsc));
1778         }
1779
1780         return;
1781 }