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