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

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.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, 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 lst_sid_t LST_INVALID_SID = {LNET_NID_ANY, -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).errors);        \
  87         __swab32s(&(lc).msgs_max);      \
  88         __swab32s(&(lc).msgs_alloc);    \
  89         __swab32s(&(lc).send_count);    \
  90         __swab32s(&(lc).recv_count);    \
  91         __swab32s(&(lc).drop_count);    \
  92         __swab32s(&(lc).route_count);   \
  93         __swab64s(&(lc).send_length);   \
  94         __swab64s(&(lc).recv_length);   \
  95         __swab64s(&(lc).drop_length);   \
  96         __swab64s(&(lc).route_length);  \
  97 } while (0)
  98
  99 #define sfw_test_active(t)      (atomic_read(&(t)->tsi_nactive))
 100 #define sfw_batch_active(b)     (atomic_read(&(b)->bat_nactive))
 101
 102 static struct smoketest_framework {
 103         struct list_head  fw_zombie_rpcs;     /* RPCs to be recycled */
 104         struct list_head  fw_zombie_sessions; /* stopping sessions */
 105         struct list_head  fw_tests;           /* registered test cases */
 106         atomic_t          fw_nzombies;        /* # zombie sessions */
 107         spinlock_t        fw_lock;            /* serialise */
 108         struct sfw_session        *fw_session;        /* _the_ session */
 109         int               fw_shuttingdown;    /* shutdown in progress */
 110         struct srpc_server_rpc *fw_active_srpc;/* running RPC */
 111 } sfw_data;
 112
 113 /* forward ref's */
 114 int sfw_stop_batch(struct sfw_batch *tsb, int force);
 115 void sfw_destroy_session(struct sfw_session *sn);
 116
 117 static inline struct sfw_test_case *
 118 sfw_find_test_case(int id)
 119 {
 120         struct sfw_test_case *tsc;
 121
 122         LASSERT(id <= SRPC_SERVICE_MAX_ID);
 123         LASSERT(id > SRPC_FRAMEWORK_SERVICE_MAX_ID);
 124
 125         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
 126                 if (tsc->tsc_srv_service->sv_id == id)
 127                         return tsc;
 128         }
 129
 130         return NULL;
 131 }
 132
 133 static int
 134 sfw_register_test(struct srpc_service *service, struct sfw_test_client_ops *cliops)
 135 {
 136         struct sfw_test_case *tsc;
 137
 138         if (sfw_find_test_case(service->sv_id)) {
 139                 CERROR("Failed to register test %s (%d)\n",
 140                        service->sv_name, service->sv_id);
 141                 return -EEXIST;
 142         }
 143
 144         LIBCFS_ALLOC(tsc, sizeof(struct sfw_test_case));
 145         if (!tsc)
 146                 return -ENOMEM;
 147
 148         tsc->tsc_cli_ops = cliops;
 149         tsc->tsc_srv_service = service;
 150
 151         list_add_tail(&tsc->tsc_list, &sfw_data.fw_tests);
 152         return 0;
 153 }
 154
 155 static void
 156 sfw_add_session_timer(void)
 157 {
 158         struct sfw_session *sn = sfw_data.fw_session;
 159         struct stt_timer *timer = &sn->sn_timer;
 160
 161         LASSERT(!sfw_data.fw_shuttingdown);
 162
 163         if (!sn || !sn->sn_timeout)
 164                 return;
 165
 166         LASSERT(!sn->sn_timer_active);
 167
 168         sn->sn_timer_active = 1;
 169         timer->stt_expires = ktime_get_real_seconds() + sn->sn_timeout;
 170         stt_add_timer(timer);
 171 }
 172
 173 static int
 174 sfw_del_session_timer(void)
 175 {
 176         struct sfw_session *sn = sfw_data.fw_session;
 177
 178         if (!sn || !sn->sn_timer_active)
 179                 return 0;
 180
 181         LASSERT(sn->sn_timeout);
 182
 183         if (stt_del_timer(&sn->sn_timer)) { /* timer defused */
 184                 sn->sn_timer_active = 0;
 185                 return 0;
 186         }
 187
 188         return EBUSY; /* racing with sfw_session_expired() */
 189 }
 190
 191 static void
 192 sfw_deactivate_session(void)
 193 __must_hold(&sfw_data.fw_lock)
 194 {
 195         struct sfw_session *sn = sfw_data.fw_session;
 196         int nactive = 0;
 197         struct sfw_batch *tsb;
 198         struct sfw_test_case *tsc;
 199
 200         if (!sn)
 201                 return;
 202
 203         LASSERT(!sn->sn_timer_active);
 204
 205         sfw_data.fw_session = NULL;
 206         atomic_inc(&sfw_data.fw_nzombies);
 207         list_add(&sn->sn_list, &sfw_data.fw_zombie_sessions);
 208
 209         spin_unlock(&sfw_data.fw_lock);
 210
 211         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
 212                 srpc_abort_service(tsc->tsc_srv_service);
 213         }
 214
 215         spin_lock(&sfw_data.fw_lock);
 216
 217         list_for_each_entry(tsb, &sn->sn_batches, bat_list) {
 218                 if (sfw_batch_active(tsb)) {
 219                         nactive++;
 220                         sfw_stop_batch(tsb, 1);
 221                 }
 222         }
 223
 224         if (nactive)
 225                 return; /* wait for active batches to stop */
 226
 227         list_del_init(&sn->sn_list);
 228         spin_unlock(&sfw_data.fw_lock);
 229
 230         sfw_destroy_session(sn);
 231
 232         spin_lock(&sfw_data.fw_lock);
 233 }
 234
 235 static void
 236 sfw_session_expired(void *data)
 237 {
 238         struct sfw_session *sn = data;
 239
 240         spin_lock(&sfw_data.fw_lock);
 241
 242         LASSERT(sn->sn_timer_active);
 243         LASSERT(sn == sfw_data.fw_session);
 244
 245         CWARN("Session expired! sid: %s-%llu, name: %s\n",
 246               libcfs_nid2str(sn->sn_id.ses_nid),
 247               sn->sn_id.ses_stamp, &sn->sn_name[0]);
 248
 249         sn->sn_timer_active = 0;
 250         sfw_deactivate_session();
 251
 252         spin_unlock(&sfw_data.fw_lock);
 253 }
 254
 255 static inline void
 256 sfw_init_session(struct sfw_session *sn, lst_sid_t sid,
 257                  unsigned features, const char *name)
 258 {
 259         struct stt_timer *timer = &sn->sn_timer;
 260
 261         memset(sn, 0, sizeof(struct sfw_session));
 262         INIT_LIST_HEAD(&sn->sn_list);
 263         INIT_LIST_HEAD(&sn->sn_batches);
 264         atomic_set(&sn->sn_refcount, 1);        /* +1 for caller */
 265         atomic_set(&sn->sn_brw_errors, 0);
 266         atomic_set(&sn->sn_ping_errors, 0);
 267         strlcpy(&sn->sn_name[0], name, sizeof(sn->sn_name));
 268
 269         sn->sn_timer_active = 0;
 270         sn->sn_id = sid;
 271         sn->sn_features = features;
 272         sn->sn_timeout = session_timeout;
 273         sn->sn_started = cfs_time_current();
 274
 275         timer->stt_data = sn;
 276         timer->stt_func = sfw_session_expired;
 277         INIT_LIST_HEAD(&timer->stt_list);
 278 }
 279
 280 /* completion handler for incoming framework RPCs */
 281 static void
 282 sfw_server_rpc_done(struct srpc_server_rpc *rpc)
 283 {
 284         struct srpc_service *sv = rpc->srpc_scd->scd_svc;
 285         int status = rpc->srpc_status;
 286
 287         CDEBUG(D_NET, "Incoming framework RPC done: service %s, peer %s, status %s:%d\n",
 288                sv->sv_name, libcfs_id2str(rpc->srpc_peer),
 289                swi_state2str(rpc->srpc_wi.swi_state),
 290                status);
 291
 292         if (rpc->srpc_bulk)
 293                 sfw_free_pages(rpc);
 294 }
 295
 296 static void
 297 sfw_client_rpc_fini(struct srpc_client_rpc *rpc)
 298 {
 299         LASSERT(!rpc->crpc_bulk.bk_niov);
 300         LASSERT(list_empty(&rpc->crpc_list));
 301         LASSERT(!atomic_read(&rpc->crpc_refcount));
 302
 303         CDEBUG(D_NET, "Outgoing framework RPC done: service %d, peer %s, status %s:%d:%d\n",
 304                rpc->crpc_service, libcfs_id2str(rpc->crpc_dest),
 305                swi_state2str(rpc->crpc_wi.swi_state),
 306                rpc->crpc_aborted, rpc->crpc_status);
 307
 308         spin_lock(&sfw_data.fw_lock);
 309
 310         /* my callers must finish all RPCs before shutting me down */
 311         LASSERT(!sfw_data.fw_shuttingdown);
 312         list_add(&rpc->crpc_list, &sfw_data.fw_zombie_rpcs);
 313
 314         spin_unlock(&sfw_data.fw_lock);
 315 }
 316
 317 static struct sfw_batch *
 318 sfw_find_batch(lst_bid_t bid)
 319 {
 320         struct sfw_session *sn = sfw_data.fw_session;
 321         struct sfw_batch *bat;
 322
 323         LASSERT(sn);
 324
 325         list_for_each_entry(bat, &sn->sn_batches, bat_list) {
 326                 if (bat->bat_id.bat_id == bid.bat_id)
 327                         return bat;
 328         }
 329
 330         return NULL;
 331 }
 332
 333 static struct sfw_batch *
 334 sfw_bid2batch(lst_bid_t bid)
 335 {
 336         struct sfw_session *sn = sfw_data.fw_session;
 337         struct sfw_batch *bat;
 338
 339         LASSERT(sn);
 340
 341         bat = sfw_find_batch(bid);
 342         if (bat)
 343                 return bat;
 344
 345         LIBCFS_ALLOC(bat, sizeof(struct sfw_batch));
 346         if (!bat)
 347                 return NULL;
 348
 349         bat->bat_error = 0;
 350         bat->bat_session = sn;
 351         bat->bat_id = bid;
 352         atomic_set(&bat->bat_nactive, 0);
 353         INIT_LIST_HEAD(&bat->bat_tests);
 354
 355         list_add_tail(&bat->bat_list, &sn->sn_batches);
 356         return bat;
 357 }
 358
 359 static int
 360 sfw_get_stats(struct srpc_stat_reqst *request, struct srpc_stat_reply *reply)
 361 {
 362         struct sfw_session *sn = sfw_data.fw_session;
 363         sfw_counters_t *cnt = &reply->str_fw;
 364         struct sfw_batch *bat;
 365
 366         reply->str_sid = !sn ? LST_INVALID_SID : sn->sn_id;
 367
 368         if (request->str_sid.ses_nid == LNET_NID_ANY) {
 369                 reply->str_status = EINVAL;
 370                 return 0;
 371         }
 372
 373         if (!sn || !sfw_sid_equal(request->str_sid, sn->sn_id)) {
 374                 reply->str_status = ESRCH;
 375                 return 0;
 376         }
 377
 378         lnet_counters_get(&reply->str_lnet);
 379         srpc_get_counters(&reply->str_rpc);
 380
 381         /*
 382          * send over the msecs since the session was started
 383          * with 32 bits to send, this is ~49 days
 384          */
 385         cnt->running_ms = jiffies_to_msecs(jiffies - sn->sn_started);
 386         cnt->brw_errors = atomic_read(&sn->sn_brw_errors);
 387         cnt->ping_errors = atomic_read(&sn->sn_ping_errors);
 388         cnt->zombie_sessions = atomic_read(&sfw_data.fw_nzombies);
 389
 390         cnt->active_batches = 0;
 391         list_for_each_entry(bat, &sn->sn_batches, bat_list) {
 392                 if (atomic_read(&bat->bat_nactive) > 0)
 393                         cnt->active_batches++;
 394         }
 395
 396         reply->str_status = 0;
 397         return 0;
 398 }
 399
 400 int
 401 sfw_make_session(struct srpc_mksn_reqst *request, struct srpc_mksn_reply *reply)
 402 {
 403         struct sfw_session *sn = sfw_data.fw_session;
 404         struct srpc_msg *msg = container_of(request, struct srpc_msg,
 405                                        msg_body.mksn_reqst);
 406         int cplen = 0;
 407
 408         if (request->mksn_sid.ses_nid == LNET_NID_ANY) {
 409                 reply->mksn_sid = !sn ? LST_INVALID_SID : sn->sn_id;
 410                 reply->mksn_status = EINVAL;
 411                 return 0;
 412         }
 413
 414         if (sn) {
 415                 reply->mksn_status = 0;
 416                 reply->mksn_sid = sn->sn_id;
 417                 reply->mksn_timeout = sn->sn_timeout;
 418
 419                 if (sfw_sid_equal(request->mksn_sid, sn->sn_id)) {
 420                         atomic_inc(&sn->sn_refcount);
 421                         return 0;
 422                 }
 423
 424                 if (!request->mksn_force) {
 425                         reply->mksn_status = EBUSY;
 426                         cplen = strlcpy(&reply->mksn_name[0], &sn->sn_name[0],
 427                                         sizeof(reply->mksn_name));
 428                         if (cplen >= sizeof(reply->mksn_name))
 429                                 return -E2BIG;
 430                         return 0;
 431                 }
 432         }
 433
 434         /*
 435          * reject the request if it requires unknown features
 436          * NB: old version will always accept all features because it's not
 437          * aware of srpc_msg::msg_ses_feats, it's a defect but it's also
 438          * harmless because it will return zero feature to console, and it's
 439          * console's responsibility to make sure all nodes in a session have
 440          * same feature mask.
 441          */
 442         if (msg->msg_ses_feats & ~LST_FEATS_MASK) {
 443                 reply->mksn_status = EPROTO;
 444                 return 0;
 445         }
 446
 447         /* brand new or create by force */
 448         LIBCFS_ALLOC(sn, sizeof(struct sfw_session));
 449         if (!sn) {
 450                 CERROR("dropping RPC mksn under memory pressure\n");
 451                 return -ENOMEM;
 452         }
 453
 454         sfw_init_session(sn, request->mksn_sid,
 455                          msg->msg_ses_feats, &request->mksn_name[0]);
 456
 457         spin_lock(&sfw_data.fw_lock);
 458
 459         sfw_deactivate_session();
 460         LASSERT(!sfw_data.fw_session);
 461         sfw_data.fw_session = sn;
 462
 463         spin_unlock(&sfw_data.fw_lock);
 464
 465         reply->mksn_status = 0;
 466         reply->mksn_sid = sn->sn_id;
 467         reply->mksn_timeout = sn->sn_timeout;
 468         return 0;
 469 }
 470
 471 static int
 472 sfw_remove_session(struct srpc_rmsn_reqst *request, struct srpc_rmsn_reply *reply)
 473 {
 474         struct sfw_session *sn = sfw_data.fw_session;
 475
 476         reply->rmsn_sid = !sn ? LST_INVALID_SID : sn->sn_id;
 477
 478         if (request->rmsn_sid.ses_nid == LNET_NID_ANY) {
 479                 reply->rmsn_status = EINVAL;
 480                 return 0;
 481         }
 482
 483         if (!sn || !sfw_sid_equal(request->rmsn_sid, sn->sn_id)) {
 484                 reply->rmsn_status = !sn ? ESRCH : EBUSY;
 485                 return 0;
 486         }
 487
 488         if (!atomic_dec_and_test(&sn->sn_refcount)) {
 489                 reply->rmsn_status = 0;
 490                 return 0;
 491         }
 492
 493         spin_lock(&sfw_data.fw_lock);
 494         sfw_deactivate_session();
 495         spin_unlock(&sfw_data.fw_lock);
 496
 497         reply->rmsn_status = 0;
 498         reply->rmsn_sid = LST_INVALID_SID;
 499         LASSERT(!sfw_data.fw_session);
 500         return 0;
 501 }
 502
 503 static int
 504 sfw_debug_session(struct srpc_debug_reqst *request, struct srpc_debug_reply *reply)
 505 {
 506         struct sfw_session *sn = sfw_data.fw_session;
 507
 508         if (!sn) {
 509                 reply->dbg_status = ESRCH;
 510                 reply->dbg_sid = LST_INVALID_SID;
 511                 return 0;
 512         }
 513
 514         reply->dbg_status = 0;
 515         reply->dbg_sid = sn->sn_id;
 516         reply->dbg_timeout = sn->sn_timeout;
 517         if (strlcpy(reply->dbg_name, &sn->sn_name[0], sizeof(reply->dbg_name))
 518             >= sizeof(reply->dbg_name))
 519                 return -E2BIG;
 520
 521         return 0;
 522 }
 523
 524 static void
 525 sfw_test_rpc_fini(struct srpc_client_rpc *rpc)
 526 {
 527         struct sfw_test_unit *tsu = rpc->crpc_priv;
 528         struct sfw_test_instance *tsi = tsu->tsu_instance;
 529
 530         /* Called with hold of tsi->tsi_lock */
 531         LASSERT(list_empty(&rpc->crpc_list));
 532         list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
 533 }
 534
 535 static inline int
 536 sfw_test_buffers(struct sfw_test_instance *tsi)
 537 {
 538         struct sfw_test_case *tsc;
 539         struct srpc_service *svc;
 540         int nbuf;
 541
 542         LASSERT(tsi);
 543         tsc = sfw_find_test_case(tsi->tsi_service);
 544         LASSERT(tsc);
 545         svc = tsc->tsc_srv_service;
 546         LASSERT(svc);
 547
 548         nbuf = min(svc->sv_wi_total, tsi->tsi_loop) / svc->sv_ncpts;
 549         return max(SFW_TEST_WI_MIN, nbuf + SFW_TEST_WI_EXTRA);
 550 }
 551
 552 static int
 553 sfw_load_test(struct sfw_test_instance *tsi)
 554 {
 555         struct sfw_test_case *tsc;
 556         struct srpc_service *svc;
 557         int nbuf;
 558         int rc;
 559
 560         LASSERT(tsi);
 561         tsc = sfw_find_test_case(tsi->tsi_service);
 562         nbuf = sfw_test_buffers(tsi);
 563         LASSERT(tsc);
 564         svc = tsc->tsc_srv_service;
 565
 566         if (tsi->tsi_is_client) {
 567                 tsi->tsi_ops = tsc->tsc_cli_ops;
 568                 return 0;
 569         }
 570
 571         rc = srpc_service_add_buffers(svc, nbuf);
 572         if (rc) {
 573                 CWARN("Failed to reserve enough buffers: service %s, %d needed: %d\n",
 574                       svc->sv_name, nbuf, rc);
 575                 /*
 576                  * NB: this error handler is not strictly correct, because
 577                  * it may release more buffers than already allocated,
 578                  * but it doesn't matter because request portal should
 579                  * be lazy portal and will grow buffers if necessary.
 580                  */
 581                 srpc_service_remove_buffers(svc, nbuf);
 582                 return -ENOMEM;
 583         }
 584
 585         CDEBUG(D_NET, "Reserved %d buffers for test %s\n",
 586                nbuf * (srpc_serv_is_framework(svc) ?
 587                        2 : cfs_cpt_number(cfs_cpt_table)), svc->sv_name);
 588         return 0;
 589 }
 590
 591 static void
 592 sfw_unload_test(struct sfw_test_instance *tsi)
 593 {
 594         struct sfw_test_case *tsc;
 595
 596         LASSERT(tsi);
 597         tsc = sfw_find_test_case(tsi->tsi_service);
 598         LASSERT(tsc);
 599
 600         if (tsi->tsi_is_client)
 601                 return;
 602
 603         /*
 604          * shrink buffers, because request portal is lazy portal
 605          * which can grow buffers at runtime so we may leave
 606          * some buffers behind, but never mind...
 607          */
 608         srpc_service_remove_buffers(tsc->tsc_srv_service,
 609                                     sfw_test_buffers(tsi));
 610 }
 611
 612 static void
 613 sfw_destroy_test_instance(struct sfw_test_instance *tsi)
 614 {
 615         struct srpc_client_rpc *rpc;
 616         struct sfw_test_unit *tsu;
 617
 618         if (!tsi->tsi_is_client)
 619                 goto clean;
 620
 621         tsi->tsi_ops->tso_fini(tsi);
 622
 623         LASSERT(!tsi->tsi_stopping);
 624         LASSERT(list_empty(&tsi->tsi_active_rpcs));
 625         LASSERT(!sfw_test_active(tsi));
 626
 627         while (!list_empty(&tsi->tsi_units)) {
 628                 tsu = list_entry(tsi->tsi_units.next,
 629                                  struct sfw_test_unit, tsu_list);
 630                 list_del(&tsu->tsu_list);
 631                 LIBCFS_FREE(tsu, sizeof(*tsu));
 632         }
 633
 634         while (!list_empty(&tsi->tsi_free_rpcs)) {
 635                 rpc = list_entry(tsi->tsi_free_rpcs.next,
 636                                  struct srpc_client_rpc, crpc_list);
 637                 list_del(&rpc->crpc_list);
 638                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
 639         }
 640
 641 clean:
 642         sfw_unload_test(tsi);
 643         LIBCFS_FREE(tsi, sizeof(*tsi));
 644 }
 645
 646 static void
 647 sfw_destroy_batch(struct sfw_batch *tsb)
 648 {
 649         struct sfw_test_instance *tsi;
 650
 651         LASSERT(!sfw_batch_active(tsb));
 652         LASSERT(list_empty(&tsb->bat_list));
 653
 654         while (!list_empty(&tsb->bat_tests)) {
 655                 tsi = list_entry(tsb->bat_tests.next,
 656                                  struct sfw_test_instance, tsi_list);
 657                 list_del_init(&tsi->tsi_list);
 658                 sfw_destroy_test_instance(tsi);
 659         }
 660
 661         LIBCFS_FREE(tsb, sizeof(struct sfw_batch));
 662 }
 663
 664 void
 665 sfw_destroy_session(struct sfw_session *sn)
 666 {
 667         struct sfw_batch *batch;
 668
 669         LASSERT(list_empty(&sn->sn_list));
 670         LASSERT(sn != sfw_data.fw_session);
 671
 672         while (!list_empty(&sn->sn_batches)) {
 673                 batch = list_entry(sn->sn_batches.next,
 674                                    struct sfw_batch, bat_list);
 675                 list_del_init(&batch->bat_list);
 676                 sfw_destroy_batch(batch);
 677         }
 678
 679         LIBCFS_FREE(sn, sizeof(*sn));
 680         atomic_dec(&sfw_data.fw_nzombies);
 681 }
 682
 683 static void
 684 sfw_unpack_addtest_req(struct srpc_msg *msg)
 685 {
 686         struct srpc_test_reqst *req = &msg->msg_body.tes_reqst;
 687
 688         LASSERT(msg->msg_type == SRPC_MSG_TEST_REQST);
 689         LASSERT(req->tsr_is_client);
 690
 691         if (msg->msg_magic == SRPC_MSG_MAGIC)
 692                 return; /* no flipping needed */
 693
 694         LASSERT(msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 695
 696         if (req->tsr_service == SRPC_SERVICE_BRW) {
 697                 if (!(msg->msg_ses_feats & LST_FEAT_BULK_LEN)) {
 698                         struct test_bulk_req *bulk = &req->tsr_u.bulk_v0;
 699
 700                         __swab32s(&bulk->blk_opc);
 701                         __swab32s(&bulk->blk_npg);
 702                         __swab32s(&bulk->blk_flags);
 703
 704                 } else {
 705                         struct test_bulk_req_v1 *bulk = &req->tsr_u.bulk_v1;
 706
 707                         __swab16s(&bulk->blk_opc);
 708                         __swab16s(&bulk->blk_flags);
 709                         __swab32s(&bulk->blk_offset);
 710                         __swab32s(&bulk->blk_len);
 711                 }
 712
 713                 return;
 714         }
 715
 716         if (req->tsr_service == SRPC_SERVICE_PING) {
 717                 struct test_ping_req *ping = &req->tsr_u.ping;
 718
 719                 __swab32s(&ping->png_size);
 720                 __swab32s(&ping->png_flags);
 721                 return;
 722         }
 723
 724         LBUG();
 725 }
 726
 727 static int
 728 sfw_add_test_instance(struct sfw_batch *tsb, struct srpc_server_rpc *rpc)
 729 {
 730         struct srpc_msg *msg = &rpc->srpc_reqstbuf->buf_msg;
 731         struct srpc_test_reqst *req = &msg->msg_body.tes_reqst;
 732         struct srpc_bulk *bk = rpc->srpc_bulk;
 733         int ndest = req->tsr_ndest;
 734         struct sfw_test_unit *tsu;
 735         struct sfw_test_instance *tsi;
 736         int i;
 737         int rc;
 738
 739         LIBCFS_ALLOC(tsi, sizeof(*tsi));
 740         if (!tsi) {
 741                 CERROR("Can't allocate test instance for batch: %llu\n",
 742                        tsb->bat_id.bat_id);
 743                 return -ENOMEM;
 744         }
 745
 746         spin_lock_init(&tsi->tsi_lock);
 747         atomic_set(&tsi->tsi_nactive, 0);
 748         INIT_LIST_HEAD(&tsi->tsi_units);
 749         INIT_LIST_HEAD(&tsi->tsi_free_rpcs);
 750         INIT_LIST_HEAD(&tsi->tsi_active_rpcs);
 751
 752         tsi->tsi_stopping = 0;
 753         tsi->tsi_batch = tsb;
 754         tsi->tsi_loop = req->tsr_loop;
 755         tsi->tsi_concur = req->tsr_concur;
 756         tsi->tsi_service = req->tsr_service;
 757         tsi->tsi_is_client = !!(req->tsr_is_client);
 758         tsi->tsi_stoptsu_onerr = !!(req->tsr_stop_onerr);
 759
 760         rc = sfw_load_test(tsi);
 761         if (rc) {
 762                 LIBCFS_FREE(tsi, sizeof(*tsi));
 763                 return rc;
 764         }
 765
 766         LASSERT(!sfw_batch_active(tsb));
 767
 768         if (!tsi->tsi_is_client) {
 769                 /* it's test server, just add it to tsb */
 770                 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
 771                 return 0;
 772         }
 773
 774         LASSERT(bk);
 775         LASSERT(bk->bk_niov * SFW_ID_PER_PAGE >= (unsigned int)ndest);
 776         LASSERT((unsigned int)bk->bk_len >=
 777                 sizeof(lnet_process_id_packed_t) * ndest);
 778
 779         sfw_unpack_addtest_req(msg);
 780         memcpy(&tsi->tsi_u, &req->tsr_u, sizeof(tsi->tsi_u));
 781
 782         for (i = 0; i < ndest; i++) {
 783                 lnet_process_id_packed_t *dests;
 784                 lnet_process_id_packed_t id;
 785                 int j;
 786
 787                 dests = page_address(bk->bk_iovs[i / SFW_ID_PER_PAGE].kiov_page);
 788                 LASSERT(dests);         /* my pages are within KVM always */
 789                 id = dests[i % SFW_ID_PER_PAGE];
 790                 if (msg->msg_magic != SRPC_MSG_MAGIC)
 791                         sfw_unpack_id(id);
 792
 793                 for (j = 0; j < tsi->tsi_concur; j++) {
 794                         LIBCFS_ALLOC(tsu, sizeof(struct sfw_test_unit));
 795                         if (!tsu) {
 796                                 rc = -ENOMEM;
 797                                 CERROR("Can't allocate tsu for %d\n",
 798                                        tsi->tsi_service);
 799                                 goto error;
 800                         }
 801
 802                         tsu->tsu_dest.nid = id.nid;
 803                         tsu->tsu_dest.pid = id.pid;
 804                         tsu->tsu_instance = tsi;
 805                         tsu->tsu_private = NULL;
 806                         list_add_tail(&tsu->tsu_list, &tsi->tsi_units);
 807                 }
 808         }
 809
 810         rc = tsi->tsi_ops->tso_init(tsi);
 811         if (!rc) {
 812                 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
 813                 return 0;
 814         }
 815
 816 error:
 817         LASSERT(rc);
 818         sfw_destroy_test_instance(tsi);
 819         return rc;
 820 }
 821
 822 static void
 823 sfw_test_unit_done(struct sfw_test_unit *tsu)
 824 {
 825         struct sfw_test_instance *tsi = tsu->tsu_instance;
 826         struct sfw_batch *tsb = tsi->tsi_batch;
 827         struct sfw_session *sn = tsb->bat_session;
 828
 829         LASSERT(sfw_test_active(tsi));
 830
 831         if (!atomic_dec_and_test(&tsi->tsi_nactive))
 832                 return;
 833
 834         /* the test instance is done */
 835         spin_lock(&tsi->tsi_lock);
 836
 837         tsi->tsi_stopping = 0;
 838
 839         spin_unlock(&tsi->tsi_lock);
 840
 841         spin_lock(&sfw_data.fw_lock);
 842
 843         if (!atomic_dec_and_test(&tsb->bat_nactive) ||  /* tsb still active */
 844             sn == sfw_data.fw_session) {                /* sn also active */
 845                 spin_unlock(&sfw_data.fw_lock);
 846                 return;
 847         }
 848
 849         LASSERT(!list_empty(&sn->sn_list)); /* I'm a zombie! */
 850
 851         list_for_each_entry(tsb, &sn->sn_batches, bat_list) {
 852                 if (sfw_batch_active(tsb)) {
 853                         spin_unlock(&sfw_data.fw_lock);
 854                         return;
 855                 }
 856         }
 857
 858         list_del_init(&sn->sn_list);
 859         spin_unlock(&sfw_data.fw_lock);
 860
 861         sfw_destroy_session(sn);
 862 }
 863
 864 static void
 865 sfw_test_rpc_done(struct srpc_client_rpc *rpc)
 866 {
 867         struct sfw_test_unit *tsu = rpc->crpc_priv;
 868         struct sfw_test_instance *tsi = tsu->tsu_instance;
 869         int done = 0;
 870
 871         tsi->tsi_ops->tso_done_rpc(tsu, rpc);
 872
 873         spin_lock(&tsi->tsi_lock);
 874
 875         LASSERT(sfw_test_active(tsi));
 876         LASSERT(!list_empty(&rpc->crpc_list));
 877
 878         list_del_init(&rpc->crpc_list);
 879
 880         /* batch is stopping or loop is done or get error */
 881         if (tsi->tsi_stopping || !tsu->tsu_loop ||
 882             (rpc->crpc_status && tsi->tsi_stoptsu_onerr))
 883                 done = 1;
 884
 885         /* dec ref for poster */
 886         srpc_client_rpc_decref(rpc);
 887
 888         spin_unlock(&tsi->tsi_lock);
 889
 890         if (!done) {
 891                 swi_schedule_workitem(&tsu->tsu_worker);
 892                 return;
 893         }
 894
 895         sfw_test_unit_done(tsu);
 896 }
 897
 898 int
 899 sfw_create_test_rpc(struct sfw_test_unit *tsu, lnet_process_id_t peer,
 900                     unsigned features, int nblk, int blklen,
 901                     struct srpc_client_rpc **rpcpp)
 902 {
 903         struct srpc_client_rpc *rpc = NULL;
 904         struct sfw_test_instance *tsi = tsu->tsu_instance;
 905
 906         spin_lock(&tsi->tsi_lock);
 907
 908         LASSERT(sfw_test_active(tsi));
 909                 /* pick request from buffer */
 910         rpc = list_first_entry_or_null(&tsi->tsi_free_rpcs,
 911                                        struct srpc_client_rpc, crpc_list);
 912         if (rpc) {
 913                 LASSERT(nblk == rpc->crpc_bulk.bk_niov);
 914                 list_del_init(&rpc->crpc_list);
 915         }
 916
 917         spin_unlock(&tsi->tsi_lock);
 918
 919         if (!rpc) {
 920                 rpc = srpc_create_client_rpc(peer, tsi->tsi_service, nblk,
 921                                              blklen, sfw_test_rpc_done,
 922                                              sfw_test_rpc_fini, tsu);
 923         } else {
 924                 srpc_init_client_rpc(rpc, peer, tsi->tsi_service, nblk,
 925                                      blklen, sfw_test_rpc_done,
 926                                      sfw_test_rpc_fini, tsu);
 927         }
 928
 929         if (!rpc) {
 930                 CERROR("Can't create rpc for test %d\n", tsi->tsi_service);
 931                 return -ENOMEM;
 932         }
 933
 934         rpc->crpc_reqstmsg.msg_ses_feats = features;
 935         *rpcpp = rpc;
 936
 937         return 0;
 938 }
 939
 940 static int
 941 sfw_run_test(struct swi_workitem *wi)
 942 {
 943         struct sfw_test_unit *tsu = wi->swi_workitem.wi_data;
 944         struct sfw_test_instance *tsi = tsu->tsu_instance;
 945         struct srpc_client_rpc *rpc = NULL;
 946
 947         LASSERT(wi == &tsu->tsu_worker);
 948
 949         if (tsi->tsi_ops->tso_prep_rpc(tsu, tsu->tsu_dest, &rpc)) {
 950                 LASSERT(!rpc);
 951                 goto test_done;
 952         }
 953
 954         LASSERT(rpc);
 955
 956         spin_lock(&tsi->tsi_lock);
 957
 958         if (tsi->tsi_stopping) {
 959                 list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
 960                 spin_unlock(&tsi->tsi_lock);
 961                 goto test_done;
 962         }
 963
 964         if (tsu->tsu_loop > 0)
 965                 tsu->tsu_loop--;
 966
 967         list_add_tail(&rpc->crpc_list, &tsi->tsi_active_rpcs);
 968         spin_unlock(&tsi->tsi_lock);
 969
 970         spin_lock(&rpc->crpc_lock);
 971         rpc->crpc_timeout = rpc_timeout;
 972         srpc_post_rpc(rpc);
 973         spin_unlock(&rpc->crpc_lock);
 974         return 0;
 975
 976 test_done:
 977         /*
 978          * No one can schedule me now since:
 979          * - previous RPC, if any, has done and
 980          * - no new RPC is initiated.
 981          * - my batch is still active; no one can run it again now.
 982          * Cancel pending schedules and prevent future schedule attempts:
 983          */
 984         swi_exit_workitem(wi);
 985         sfw_test_unit_done(tsu);
 986         return 1;
 987 }
 988
 989 static int
 990 sfw_run_batch(struct sfw_batch *tsb)
 991 {
 992         struct swi_workitem *wi;
 993         struct sfw_test_unit *tsu;
 994         struct sfw_test_instance *tsi;
 995
 996         if (sfw_batch_active(tsb)) {
 997                 CDEBUG(D_NET, "Batch already active: %llu (%d)\n",
 998                        tsb->bat_id.bat_id, atomic_read(&tsb->bat_nactive));
 999                 return 0;
1000         }
1001
1002         list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1003                 if (!tsi->tsi_is_client) /* skip server instances */
1004                         continue;
1005
1006                 LASSERT(!tsi->tsi_stopping);
1007                 LASSERT(!sfw_test_active(tsi));
1008
1009                 atomic_inc(&tsb->bat_nactive);
1010
1011                 list_for_each_entry(tsu, &tsi->tsi_units, tsu_list) {
1012                         atomic_inc(&tsi->tsi_nactive);
1013                         tsu->tsu_loop = tsi->tsi_loop;
1014                         wi = &tsu->tsu_worker;
1015                         swi_init_workitem(wi, tsu, sfw_run_test,
1016                                           lst_sched_test[lnet_cpt_of_nid(tsu->tsu_dest.nid)]);
1017                         swi_schedule_workitem(wi);
1018                 }
1019         }
1020
1021         return 0;
1022 }
1023
1024 int
1025 sfw_stop_batch(struct sfw_batch *tsb, int force)
1026 {
1027         struct sfw_test_instance *tsi;
1028         struct srpc_client_rpc *rpc;
1029
1030         if (!sfw_batch_active(tsb)) {
1031                 CDEBUG(D_NET, "Batch %llu inactive\n", tsb->bat_id.bat_id);
1032                 return 0;
1033         }
1034
1035         list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1036                 spin_lock(&tsi->tsi_lock);
1037
1038                 if (!tsi->tsi_is_client ||
1039                     !sfw_test_active(tsi) || tsi->tsi_stopping) {
1040                         spin_unlock(&tsi->tsi_lock);
1041                         continue;
1042                 }
1043
1044                 tsi->tsi_stopping = 1;
1045
1046                 if (!force) {
1047                         spin_unlock(&tsi->tsi_lock);
1048                         continue;
1049                 }
1050
1051                 /* abort launched rpcs in the test */
1052                 list_for_each_entry(rpc, &tsi->tsi_active_rpcs, crpc_list) {
1053                         spin_lock(&rpc->crpc_lock);
1054
1055                         srpc_abort_rpc(rpc, -EINTR);
1056
1057                         spin_unlock(&rpc->crpc_lock);
1058                 }
1059
1060                 spin_unlock(&tsi->tsi_lock);
1061         }
1062
1063         return 0;
1064 }
1065
1066 static int
1067 sfw_query_batch(struct sfw_batch *tsb, int testidx, struct srpc_batch_reply *reply)
1068 {
1069         struct sfw_test_instance *tsi;
1070
1071         if (testidx < 0)
1072                 return -EINVAL;
1073
1074         if (!testidx) {
1075                 reply->bar_active = atomic_read(&tsb->bat_nactive);
1076                 return 0;
1077         }
1078
1079         list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1080                 if (testidx-- > 1)
1081                         continue;
1082
1083                 reply->bar_active = atomic_read(&tsi->tsi_nactive);
1084                 return 0;
1085         }
1086
1087         return -ENOENT;
1088 }
1089
1090 void
1091 sfw_free_pages(struct srpc_server_rpc *rpc)
1092 {
1093         srpc_free_bulk(rpc->srpc_bulk);
1094         rpc->srpc_bulk = NULL;
1095 }
1096
1097 int
1098 sfw_alloc_pages(struct srpc_server_rpc *rpc, int cpt, int npages, int len,
1099                 int sink)
1100 {
1101         LASSERT(!rpc->srpc_bulk);
1102         LASSERT(npages > 0 && npages <= LNET_MAX_IOV);
1103
1104         rpc->srpc_bulk = srpc_alloc_bulk(cpt, npages, len, sink);
1105         if (!rpc->srpc_bulk)
1106                 return -ENOMEM;
1107
1108         return 0;
1109 }
1110
1111 static int
1112 sfw_add_test(struct srpc_server_rpc *rpc)
1113 {
1114         struct sfw_session *sn = sfw_data.fw_session;
1115         struct srpc_test_reply *reply = &rpc->srpc_replymsg.msg_body.tes_reply;
1116         struct srpc_test_reqst *request;
1117         int rc;
1118         struct sfw_batch *bat;
1119
1120         request = &rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst;
1121         reply->tsr_sid = !sn ? LST_INVALID_SID : sn->sn_id;
1122
1123         if (!request->tsr_loop ||
1124             !request->tsr_concur ||
1125             request->tsr_sid.ses_nid == LNET_NID_ANY ||
1126             request->tsr_ndest > SFW_MAX_NDESTS ||
1127             (request->tsr_is_client && !request->tsr_ndest) ||
1128             request->tsr_concur > SFW_MAX_CONCUR ||
1129             request->tsr_service > SRPC_SERVICE_MAX_ID ||
1130             request->tsr_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID) {
1131                 reply->tsr_status = EINVAL;
1132                 return 0;
1133         }
1134
1135         if (!sn || !sfw_sid_equal(request->tsr_sid, sn->sn_id) ||
1136             !sfw_find_test_case(request->tsr_service)) {
1137                 reply->tsr_status = ENOENT;
1138                 return 0;
1139         }
1140
1141         bat = sfw_bid2batch(request->tsr_bid);
1142         if (!bat) {
1143                 CERROR("dropping RPC %s from %s under memory pressure\n",
1144                        rpc->srpc_scd->scd_svc->sv_name,
1145                        libcfs_id2str(rpc->srpc_peer));
1146                 return -ENOMEM;
1147         }
1148
1149         if (sfw_batch_active(bat)) {
1150                 reply->tsr_status = EBUSY;
1151                 return 0;
1152         }
1153
1154         if (request->tsr_is_client && !rpc->srpc_bulk) {
1155                 /* rpc will be resumed later in sfw_bulk_ready */
1156                 int npg = sfw_id_pages(request->tsr_ndest);
1157                 int len;
1158
1159                 if (!(sn->sn_features & LST_FEAT_BULK_LEN)) {
1160                         len = npg * PAGE_SIZE;
1161
1162                 } else {
1163                         len = sizeof(lnet_process_id_packed_t) *
1164                               request->tsr_ndest;
1165                 }
1166
1167                 return sfw_alloc_pages(rpc, CFS_CPT_ANY, npg, len, 1);
1168         }
1169
1170         rc = sfw_add_test_instance(bat, rpc);
1171         CDEBUG(!rc ? D_NET : D_WARNING,
1172                "%s test: sv %d %s, loop %d, concur %d, ndest %d\n",
1173                !rc ? "Added" : "Failed to add", request->tsr_service,
1174                request->tsr_is_client ? "client" : "server",
1175                request->tsr_loop, request->tsr_concur, request->tsr_ndest);
1176
1177         reply->tsr_status = (rc < 0) ? -rc : rc;
1178         return 0;
1179 }
1180
1181 static int
1182 sfw_control_batch(struct srpc_batch_reqst *request, struct srpc_batch_reply *reply)
1183 {
1184         struct sfw_session *sn = sfw_data.fw_session;
1185         int rc = 0;
1186         struct sfw_batch *bat;
1187
1188         reply->bar_sid = !sn ? LST_INVALID_SID : sn->sn_id;
1189
1190         if (!sn || !sfw_sid_equal(request->bar_sid, sn->sn_id)) {
1191                 reply->bar_status = ESRCH;
1192                 return 0;
1193         }
1194
1195         bat = sfw_find_batch(request->bar_bid);
1196         if (!bat) {
1197                 reply->bar_status = ENOENT;
1198                 return 0;
1199         }
1200
1201         switch (request->bar_opc) {
1202         case SRPC_BATCH_OPC_RUN:
1203                 rc = sfw_run_batch(bat);
1204                 break;
1205
1206         case SRPC_BATCH_OPC_STOP:
1207                 rc = sfw_stop_batch(bat, request->bar_arg);
1208                 break;
1209
1210         case SRPC_BATCH_OPC_QUERY:
1211                 rc = sfw_query_batch(bat, request->bar_testidx, reply);
1212                 break;
1213
1214         default:
1215                 return -EINVAL; /* drop it */
1216         }
1217
1218         reply->bar_status = (rc < 0) ? -rc : rc;
1219         return 0;
1220 }
1221
1222 static int
1223 sfw_handle_server_rpc(struct srpc_server_rpc *rpc)
1224 {
1225         struct srpc_service *sv = rpc->srpc_scd->scd_svc;
1226         struct srpc_msg *reply = &rpc->srpc_replymsg;
1227         struct srpc_msg *request = &rpc->srpc_reqstbuf->buf_msg;
1228         unsigned features = LST_FEATS_MASK;
1229         int rc = 0;
1230
1231         LASSERT(!sfw_data.fw_active_srpc);
1232         LASSERT(sv->sv_id <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1233
1234         spin_lock(&sfw_data.fw_lock);
1235
1236         if (sfw_data.fw_shuttingdown) {
1237                 spin_unlock(&sfw_data.fw_lock);
1238                 return -ESHUTDOWN;
1239         }
1240
1241         /* Remove timer to avoid racing with it or expiring active session */
1242         if (sfw_del_session_timer()) {
1243                 CERROR("dropping RPC %s from %s: racing with expiry timer\n",
1244                        sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1245                 spin_unlock(&sfw_data.fw_lock);
1246                 return -EAGAIN;
1247         }
1248
1249         sfw_data.fw_active_srpc = rpc;
1250         spin_unlock(&sfw_data.fw_lock);
1251
1252         sfw_unpack_message(request);
1253         LASSERT(request->msg_type == srpc_service2request(sv->sv_id));
1254
1255         /* rpc module should have checked this */
1256         LASSERT(request->msg_version == SRPC_MSG_VERSION);
1257
1258         if (sv->sv_id != SRPC_SERVICE_MAKE_SESSION &&
1259             sv->sv_id != SRPC_SERVICE_DEBUG) {
1260                 struct sfw_session *sn = sfw_data.fw_session;
1261
1262                 if (sn &&
1263                     sn->sn_features != request->msg_ses_feats) {
1264                         CNETERR("Features of framework RPC don't match features of current session: %x/%x\n",
1265                                 request->msg_ses_feats, sn->sn_features);
1266                         reply->msg_body.reply.status = EPROTO;
1267                         reply->msg_body.reply.sid = sn->sn_id;
1268                         goto out;
1269                 }
1270
1271         } else if (request->msg_ses_feats & ~LST_FEATS_MASK) {
1272                 /*
1273                  * NB: at this point, old version will ignore features and
1274                  * create new session anyway, so console should be able
1275                  * to handle this
1276                  */
1277                 reply->msg_body.reply.status = EPROTO;
1278                 goto out;
1279         }
1280
1281         switch (sv->sv_id) {
1282         default:
1283                 LBUG();
1284         case SRPC_SERVICE_TEST:
1285                 rc = sfw_add_test(rpc);
1286                 break;
1287
1288         case SRPC_SERVICE_BATCH:
1289                 rc = sfw_control_batch(&request->msg_body.bat_reqst,
1290                                        &reply->msg_body.bat_reply);
1291                 break;
1292
1293         case SRPC_SERVICE_QUERY_STAT:
1294                 rc = sfw_get_stats(&request->msg_body.stat_reqst,
1295                                    &reply->msg_body.stat_reply);
1296                 break;
1297
1298         case SRPC_SERVICE_DEBUG:
1299                 rc = sfw_debug_session(&request->msg_body.dbg_reqst,
1300                                        &reply->msg_body.dbg_reply);
1301                 break;
1302
1303         case SRPC_SERVICE_MAKE_SESSION:
1304                 rc = sfw_make_session(&request->msg_body.mksn_reqst,
1305                                       &reply->msg_body.mksn_reply);
1306                 break;
1307
1308         case SRPC_SERVICE_REMOVE_SESSION:
1309                 rc = sfw_remove_session(&request->msg_body.rmsn_reqst,
1310                                         &reply->msg_body.rmsn_reply);
1311                 break;
1312         }
1313
1314         if (sfw_data.fw_session)
1315                 features = sfw_data.fw_session->sn_features;
1316  out:
1317         reply->msg_ses_feats = features;
1318         rpc->srpc_done = sfw_server_rpc_done;
1319         spin_lock(&sfw_data.fw_lock);
1320
1321         if (!sfw_data.fw_shuttingdown)
1322                 sfw_add_session_timer();
1323
1324         sfw_data.fw_active_srpc = NULL;
1325         spin_unlock(&sfw_data.fw_lock);
1326         return rc;
1327 }
1328
1329 static int
1330 sfw_bulk_ready(struct srpc_server_rpc *rpc, int status)
1331 {
1332         struct srpc_service *sv = rpc->srpc_scd->scd_svc;
1333         int rc;
1334
1335         LASSERT(rpc->srpc_bulk);
1336         LASSERT(sv->sv_id == SRPC_SERVICE_TEST);
1337         LASSERT(!sfw_data.fw_active_srpc);
1338         LASSERT(rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst.tsr_is_client);
1339
1340         spin_lock(&sfw_data.fw_lock);
1341
1342         if (status) {
1343                 CERROR("Bulk transfer failed for RPC: service %s, peer %s, status %d\n",
1344                        sv->sv_name, libcfs_id2str(rpc->srpc_peer), status);
1345                 spin_unlock(&sfw_data.fw_lock);
1346                 return -EIO;
1347         }
1348
1349         if (sfw_data.fw_shuttingdown) {
1350                 spin_unlock(&sfw_data.fw_lock);
1351                 return -ESHUTDOWN;
1352         }
1353
1354         if (sfw_del_session_timer()) {
1355                 CERROR("dropping RPC %s from %s: racing with expiry timer\n",
1356                        sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1357                 spin_unlock(&sfw_data.fw_lock);
1358                 return -EAGAIN;
1359         }
1360
1361         sfw_data.fw_active_srpc = rpc;
1362         spin_unlock(&sfw_data.fw_lock);
1363
1364         rc = sfw_add_test(rpc);
1365
1366         spin_lock(&sfw_data.fw_lock);
1367
1368         if (!sfw_data.fw_shuttingdown)
1369                 sfw_add_session_timer();
1370
1371         sfw_data.fw_active_srpc = NULL;
1372         spin_unlock(&sfw_data.fw_lock);
1373         return rc;
1374 }
1375
1376 struct srpc_client_rpc *
1377 sfw_create_rpc(lnet_process_id_t peer, int service,
1378                unsigned features, int nbulkiov, int bulklen,
1379                void (*done)(struct srpc_client_rpc *), void *priv)
1380 {
1381         struct srpc_client_rpc *rpc = NULL;
1382
1383         spin_lock(&sfw_data.fw_lock);
1384
1385         LASSERT(!sfw_data.fw_shuttingdown);
1386         LASSERT(service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1387
1388         if (!nbulkiov && !list_empty(&sfw_data.fw_zombie_rpcs)) {
1389                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1390                                  struct srpc_client_rpc, crpc_list);
1391                 list_del(&rpc->crpc_list);
1392
1393                 srpc_init_client_rpc(rpc, peer, service, 0, 0,
1394                                      done, sfw_client_rpc_fini, priv);
1395         }
1396
1397         spin_unlock(&sfw_data.fw_lock);
1398
1399         if (!rpc) {
1400                 rpc = srpc_create_client_rpc(peer, service,
1401                                              nbulkiov, bulklen, done,
1402                                              nbulkiov ?  NULL :
1403                                              sfw_client_rpc_fini,
1404                                              priv);
1405         }
1406
1407         if (rpc) /* "session" is concept in framework */
1408                 rpc->crpc_reqstmsg.msg_ses_feats = features;
1409
1410         return rpc;
1411 }
1412
1413 void
1414 sfw_unpack_message(struct srpc_msg *msg)
1415 {
1416         if (msg->msg_magic == SRPC_MSG_MAGIC)
1417                 return; /* no flipping needed */
1418
1419         /* srpc module should guarantee I wouldn't get crap */
1420         LASSERT(msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
1421
1422         if (msg->msg_type == SRPC_MSG_STAT_REQST) {
1423                 struct srpc_stat_reqst *req = &msg->msg_body.stat_reqst;
1424
1425                 __swab32s(&req->str_type);
1426                 __swab64s(&req->str_rpyid);
1427                 sfw_unpack_sid(req->str_sid);
1428                 return;
1429         }
1430
1431         if (msg->msg_type == SRPC_MSG_STAT_REPLY) {
1432                 struct srpc_stat_reply *rep = &msg->msg_body.stat_reply;
1433
1434                 __swab32s(&rep->str_status);
1435                 sfw_unpack_sid(rep->str_sid);
1436                 sfw_unpack_fw_counters(rep->str_fw);
1437                 sfw_unpack_rpc_counters(rep->str_rpc);
1438                 sfw_unpack_lnet_counters(rep->str_lnet);
1439                 return;
1440         }
1441
1442         if (msg->msg_type == SRPC_MSG_MKSN_REQST) {
1443                 struct srpc_mksn_reqst *req = &msg->msg_body.mksn_reqst;
1444
1445                 __swab64s(&req->mksn_rpyid);
1446                 __swab32s(&req->mksn_force);
1447                 sfw_unpack_sid(req->mksn_sid);
1448                 return;
1449         }
1450
1451         if (msg->msg_type == SRPC_MSG_MKSN_REPLY) {
1452                 struct srpc_mksn_reply *rep = &msg->msg_body.mksn_reply;
1453
1454                 __swab32s(&rep->mksn_status);
1455                 __swab32s(&rep->mksn_timeout);
1456                 sfw_unpack_sid(rep->mksn_sid);
1457                 return;
1458         }
1459
1460         if (msg->msg_type == SRPC_MSG_RMSN_REQST) {
1461                 struct srpc_rmsn_reqst *req = &msg->msg_body.rmsn_reqst;
1462
1463                 __swab64s(&req->rmsn_rpyid);
1464                 sfw_unpack_sid(req->rmsn_sid);
1465                 return;
1466         }
1467
1468         if (msg->msg_type == SRPC_MSG_RMSN_REPLY) {
1469                 struct srpc_rmsn_reply *rep = &msg->msg_body.rmsn_reply;
1470
1471                 __swab32s(&rep->rmsn_status);
1472                 sfw_unpack_sid(rep->rmsn_sid);
1473                 return;
1474         }
1475
1476         if (msg->msg_type == SRPC_MSG_DEBUG_REQST) {
1477                 struct srpc_debug_reqst *req = &msg->msg_body.dbg_reqst;
1478
1479                 __swab64s(&req->dbg_rpyid);
1480                 __swab32s(&req->dbg_flags);
1481                 sfw_unpack_sid(req->dbg_sid);
1482                 return;
1483         }
1484
1485         if (msg->msg_type == SRPC_MSG_DEBUG_REPLY) {
1486                 struct srpc_debug_reply *rep = &msg->msg_body.dbg_reply;
1487
1488                 __swab32s(&rep->dbg_nbatch);
1489                 __swab32s(&rep->dbg_timeout);
1490                 sfw_unpack_sid(rep->dbg_sid);
1491                 return;
1492         }
1493
1494         if (msg->msg_type == SRPC_MSG_BATCH_REQST) {
1495                 struct srpc_batch_reqst *req = &msg->msg_body.bat_reqst;
1496
1497                 __swab32s(&req->bar_opc);
1498                 __swab64s(&req->bar_rpyid);
1499                 __swab32s(&req->bar_testidx);
1500                 __swab32s(&req->bar_arg);
1501                 sfw_unpack_sid(req->bar_sid);
1502                 __swab64s(&req->bar_bid.bat_id);
1503                 return;
1504         }
1505
1506         if (msg->msg_type == SRPC_MSG_BATCH_REPLY) {
1507                 struct srpc_batch_reply *rep = &msg->msg_body.bat_reply;
1508
1509                 __swab32s(&rep->bar_status);
1510                 sfw_unpack_sid(rep->bar_sid);
1511                 return;
1512         }
1513
1514         if (msg->msg_type == SRPC_MSG_TEST_REQST) {
1515                 struct srpc_test_reqst *req = &msg->msg_body.tes_reqst;
1516
1517                 __swab64s(&req->tsr_rpyid);
1518                 __swab64s(&req->tsr_bulkid);
1519                 __swab32s(&req->tsr_loop);
1520                 __swab32s(&req->tsr_ndest);
1521                 __swab32s(&req->tsr_concur);
1522                 __swab32s(&req->tsr_service);
1523                 sfw_unpack_sid(req->tsr_sid);
1524                 __swab64s(&req->tsr_bid.bat_id);
1525                 return;
1526         }
1527
1528         if (msg->msg_type == SRPC_MSG_TEST_REPLY) {
1529                 struct srpc_test_reply *rep = &msg->msg_body.tes_reply;
1530
1531                 __swab32s(&rep->tsr_status);
1532                 sfw_unpack_sid(rep->tsr_sid);
1533                 return;
1534         }
1535
1536         if (msg->msg_type == SRPC_MSG_JOIN_REQST) {
1537                 struct srpc_join_reqst *req = &msg->msg_body.join_reqst;
1538
1539                 __swab64s(&req->join_rpyid);
1540                 sfw_unpack_sid(req->join_sid);
1541                 return;
1542         }
1543
1544         if (msg->msg_type == SRPC_MSG_JOIN_REPLY) {
1545                 struct srpc_join_reply *rep = &msg->msg_body.join_reply;
1546
1547                 __swab32s(&rep->join_status);
1548                 __swab32s(&rep->join_timeout);
1549                 sfw_unpack_sid(rep->join_sid);
1550                 return;
1551         }
1552
1553         LBUG();
1554 }
1555
1556 void
1557 sfw_abort_rpc(struct srpc_client_rpc *rpc)
1558 {
1559         LASSERT(atomic_read(&rpc->crpc_refcount) > 0);
1560         LASSERT(rpc->crpc_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1561
1562         spin_lock(&rpc->crpc_lock);
1563         srpc_abort_rpc(rpc, -EINTR);
1564         spin_unlock(&rpc->crpc_lock);
1565 }
1566
1567 void
1568 sfw_post_rpc(struct srpc_client_rpc *rpc)
1569 {
1570         spin_lock(&rpc->crpc_lock);
1571
1572         LASSERT(!rpc->crpc_closed);
1573         LASSERT(!rpc->crpc_aborted);
1574         LASSERT(list_empty(&rpc->crpc_list));
1575         LASSERT(!sfw_data.fw_shuttingdown);
1576
1577         rpc->crpc_timeout = rpc_timeout;
1578         srpc_post_rpc(rpc);
1579
1580         spin_unlock(&rpc->crpc_lock);
1581 }
1582
1583 static struct srpc_service sfw_services[] = {
1584         {
1585                 /* sv_id */    SRPC_SERVICE_DEBUG,
1586                 /* sv_name */  "debug",
1587                 0
1588         },
1589         {
1590                 /* sv_id */    SRPC_SERVICE_QUERY_STAT,
1591                 /* sv_name */  "query stats",
1592                 0
1593         },
1594         {
1595                 /* sv_id */    SRPC_SERVICE_MAKE_SESSION,
1596                 /* sv_name */  "make session",
1597                 0
1598         },
1599         {
1600                 /* sv_id */    SRPC_SERVICE_REMOVE_SESSION,
1601                 /* sv_name */  "remove session",
1602                 0
1603         },
1604         {
1605                 /* sv_id */    SRPC_SERVICE_BATCH,
1606                 /* sv_name */  "batch service",
1607                 0
1608         },
1609         {
1610                 /* sv_id */    SRPC_SERVICE_TEST,
1611                 /* sv_name */  "test service",
1612                 0
1613         },
1614         {
1615                 /* sv_id */    0,
1616                 /* sv_name */  NULL,
1617                 0
1618         }
1619 };
1620
1621 int
1622 sfw_startup(void)
1623 {
1624         int i;
1625         int rc;
1626         int error;
1627         struct srpc_service *sv;
1628         struct sfw_test_case *tsc;
1629
1630         if (session_timeout < 0) {
1631                 CERROR("Session timeout must be non-negative: %d\n",
1632                        session_timeout);
1633                 return -EINVAL;
1634         }
1635
1636         if (rpc_timeout < 0) {
1637                 CERROR("RPC timeout must be non-negative: %d\n",
1638                        rpc_timeout);
1639                 return -EINVAL;
1640         }
1641
1642         if (!session_timeout)
1643                 CWARN("Zero session_timeout specified - test sessions never expire.\n");
1644
1645         if (!rpc_timeout)
1646                 CWARN("Zero rpc_timeout specified - test RPC never expire.\n");
1647
1648         memset(&sfw_data, 0, sizeof(struct smoketest_framework));
1649
1650         sfw_data.fw_session = NULL;
1651         sfw_data.fw_active_srpc = NULL;
1652         spin_lock_init(&sfw_data.fw_lock);
1653         atomic_set(&sfw_data.fw_nzombies, 0);
1654         INIT_LIST_HEAD(&sfw_data.fw_tests);
1655         INIT_LIST_HEAD(&sfw_data.fw_zombie_rpcs);
1656         INIT_LIST_HEAD(&sfw_data.fw_zombie_sessions);
1657
1658         brw_init_test_client();
1659         brw_init_test_service();
1660         rc = sfw_register_test(&brw_test_service, &brw_test_client);
1661         LASSERT(!rc);
1662
1663         ping_init_test_client();
1664         ping_init_test_service();
1665         rc = sfw_register_test(&ping_test_service, &ping_test_client);
1666         LASSERT(!rc);
1667
1668         error = 0;
1669         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1670                 sv = tsc->tsc_srv_service;
1671
1672                 rc = srpc_add_service(sv);
1673                 LASSERT(rc != -EBUSY);
1674                 if (rc) {
1675                         CWARN("Failed to add %s service: %d\n",
1676                               sv->sv_name, rc);
1677                         error = rc;
1678                 }
1679         }
1680
1681         for (i = 0; ; i++) {
1682                 sv = &sfw_services[i];
1683                 if (!sv->sv_name)
1684                         break;
1685
1686                 sv->sv_bulk_ready = NULL;
1687                 sv->sv_handler = sfw_handle_server_rpc;
1688                 sv->sv_wi_total = SFW_FRWK_WI_MAX;
1689                 if (sv->sv_id == SRPC_SERVICE_TEST)
1690                         sv->sv_bulk_ready = sfw_bulk_ready;
1691
1692                 rc = srpc_add_service(sv);
1693                 LASSERT(rc != -EBUSY);
1694                 if (rc) {
1695                         CWARN("Failed to add %s service: %d\n",
1696                               sv->sv_name, rc);
1697                         error = rc;
1698                 }
1699
1700                 /* about to sfw_shutdown, no need to add buffer */
1701                 if (error)
1702                         continue;
1703
1704                 rc = srpc_service_add_buffers(sv, sv->sv_wi_total);
1705                 if (rc) {
1706                         CWARN("Failed to reserve enough buffers: service %s, %d needed: %d\n",
1707                               sv->sv_name, sv->sv_wi_total, rc);
1708                         error = -ENOMEM;
1709                 }
1710         }
1711
1712         if (error)
1713                 sfw_shutdown();
1714         return error;
1715 }
1716
1717 void
1718 sfw_shutdown(void)
1719 {
1720         struct srpc_service *sv;
1721         struct sfw_test_case    *tsc;
1722         int i;
1723
1724         spin_lock(&sfw_data.fw_lock);
1725
1726         sfw_data.fw_shuttingdown = 1;
1727         lst_wait_until(!sfw_data.fw_active_srpc, sfw_data.fw_lock,
1728                        "waiting for active RPC to finish.\n");
1729
1730         if (sfw_del_session_timer())
1731                 lst_wait_until(!sfw_data.fw_session, sfw_data.fw_lock,
1732                                "waiting for session timer to explode.\n");
1733
1734         sfw_deactivate_session();
1735         lst_wait_until(!atomic_read(&sfw_data.fw_nzombies),
1736                        sfw_data.fw_lock,
1737                        "waiting for %d zombie sessions to die.\n",
1738                        atomic_read(&sfw_data.fw_nzombies));
1739
1740         spin_unlock(&sfw_data.fw_lock);
1741
1742         for (i = 0; ; i++) {
1743                 sv = &sfw_services[i];
1744                 if (!sv->sv_name)
1745                         break;
1746
1747                 srpc_shutdown_service(sv);
1748                 srpc_remove_service(sv);
1749         }
1750
1751         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1752                 sv = tsc->tsc_srv_service;
1753                 srpc_shutdown_service(sv);
1754                 srpc_remove_service(sv);
1755         }
1756
1757         while (!list_empty(&sfw_data.fw_zombie_rpcs)) {
1758                 struct srpc_client_rpc *rpc;
1759
1760                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1761                                  struct srpc_client_rpc, crpc_list);
1762                 list_del(&rpc->crpc_list);
1763
1764                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
1765         }
1766
1767         for (i = 0; ; i++) {
1768                 sv = &sfw_services[i];
1769                 if (!sv->sv_name)
1770                         break;
1771
1772                 srpc_wait_service_shutdown(sv);
1773         }
1774
1775         while (!list_empty(&sfw_data.fw_tests)) {
1776                 tsc = list_entry(sfw_data.fw_tests.next,
1777                                  struct sfw_test_case, tsc_list);
1778
1779                 srpc_wait_service_shutdown(tsc->tsc_srv_service);
1780
1781                 list_del(&tsc->tsc_list);
1782                 LIBCFS_FREE(tsc, sizeof(*tsc));
1783         }
1784 }