lnet/selftest/framework.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2012, 2014, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lnet/selftest/framework.c
  37  *
  38  * Author: Isaac Huang <isaac@clusterfs.com>
  39  * Author: Liang Zhen  <liangzhen@clusterfs.com>
  40  */
  41
  42 #define DEBUG_SUBSYSTEM S_LNET
  43
  44 #include "selftest.h"
  45
  46 lst_sid_t LST_INVALID_SID = {LNET_NID_ANY, -1};
  47
  48 static int session_timeout = 100;
  49 CFS_MODULE_PARM(session_timeout, "i", int, 0444,
  50                 "test session timeout in seconds (100 by default, 0 == never)");
  51
  52 static int rpc_timeout = 64;
  53 CFS_MODULE_PARM(rpc_timeout, "i", int, 0644,
  54                 "rpc timeout in seconds (64 by default, 0 == never)");
  55
  56 #define sfw_unpack_id(id)               \
  57 do {                                    \
  58         __swab64s(&(id).nid);           \
  59         __swab32s(&(id).pid);           \
  60 } while (0)
  61
  62 #define sfw_unpack_sid(sid)             \
  63 do {                                    \
  64         __swab64s(&(sid).ses_nid);      \
  65         __swab64s(&(sid).ses_stamp);    \
  66 } while (0)
  67
  68 #define sfw_unpack_fw_counters(fc)        \
  69 do {                                      \
  70         __swab32s(&(fc).running_ms);      \
  71         __swab32s(&(fc).active_batches);  \
  72         __swab32s(&(fc).zombie_sessions); \
  73         __swab32s(&(fc).brw_errors);      \
  74         __swab32s(&(fc).ping_errors);     \
  75 } while (0)
  76
  77 #define sfw_unpack_rpc_counters(rc)     \
  78 do {                                    \
  79         __swab32s(&(rc).errors);        \
  80         __swab32s(&(rc).rpcs_sent);     \
  81         __swab32s(&(rc).rpcs_rcvd);     \
  82         __swab32s(&(rc).rpcs_dropped);  \
  83         __swab32s(&(rc).rpcs_expired);  \
  84         __swab64s(&(rc).bulk_get);      \
  85         __swab64s(&(rc).bulk_put);      \
  86 } while (0)
  87
  88 #define sfw_unpack_lnet_counters(lc)    \
  89 do {                                    \
  90         __swab32s(&(lc).errors);        \
  91         __swab32s(&(lc).msgs_max);      \
  92         __swab32s(&(lc).msgs_alloc);    \
  93         __swab32s(&(lc).send_count);    \
  94         __swab32s(&(lc).recv_count);    \
  95         __swab32s(&(lc).drop_count);    \
  96         __swab32s(&(lc).route_count);   \
  97         __swab64s(&(lc).send_length);   \
  98         __swab64s(&(lc).recv_length);   \
  99         __swab64s(&(lc).drop_length);   \
 100         __swab64s(&(lc).route_length);  \
 101 } while (0)
 102
 103 #define sfw_test_active(t)      (atomic_read(&(t)->tsi_nactive) != 0)
 104 #define sfw_batch_active(b)     (atomic_read(&(b)->bat_nactive) != 0)
 105
 106 struct smoketest_framework {
 107         /* RPCs to be recycled */
 108         struct list_head        fw_zombie_rpcs;
 109         /* stopping sessions */
 110         struct list_head        fw_zombie_sessions;
 111         /* registered test cases */
 112         struct list_head        fw_tests;
 113         /* # zombie sessions */
 114         atomic_t                fw_nzombies;
 115         /* serialise */
 116         spinlock_t              fw_lock;
 117         /* _the_ session */
 118         sfw_session_t           *fw_session;
 119         /* shutdown in progress */
 120         int                     fw_shuttingdown;
 121         /* running RPC */
 122         srpc_server_rpc_t       *fw_active_srpc;
 123 } sfw_data;
 124
 125 /* forward ref's */
 126 int sfw_stop_batch (sfw_batch_t *tsb, int force);
 127 void sfw_destroy_session (sfw_session_t *sn);
 128
 129 static inline sfw_test_case_t *
 130 sfw_find_test_case(int id)
 131 {
 132         sfw_test_case_t *tsc;
 133
 134         LASSERT(id <= SRPC_SERVICE_MAX_ID);
 135         LASSERT(id > SRPC_FRAMEWORK_SERVICE_MAX_ID);
 136
 137         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
 138                 if (tsc->tsc_srv_service->sv_id == id)
 139                         return tsc;
 140         }
 141
 142         return NULL;
 143 }
 144
 145 static int
 146 sfw_register_test (srpc_service_t *service, sfw_test_client_ops_t *cliops)
 147 {
 148         sfw_test_case_t *tsc;
 149
 150         if (sfw_find_test_case(service->sv_id) != NULL) {
 151                 CERROR ("Failed to register test %s (%d)\n",
 152                         service->sv_name, service->sv_id);
 153                 return -EEXIST;
 154         }
 155
 156         LIBCFS_ALLOC(tsc, sizeof(sfw_test_case_t));
 157         if (tsc == NULL)
 158                 return -ENOMEM;
 159
 160         memset(tsc, 0, sizeof(sfw_test_case_t));
 161         tsc->tsc_cli_ops     = cliops;
 162         tsc->tsc_srv_service = service;
 163
 164         list_add_tail(&tsc->tsc_list, &sfw_data.fw_tests);
 165         return 0;
 166 }
 167
 168 void
 169 sfw_add_session_timer (void)
 170 {
 171         sfw_session_t *sn = sfw_data.fw_session;
 172         stt_timer_t   *timer = &sn->sn_timer;
 173
 174         LASSERT (!sfw_data.fw_shuttingdown);
 175
 176         if (sn == NULL || sn->sn_timeout == 0)
 177                 return;
 178
 179         LASSERT (!sn->sn_timer_active);
 180
 181         sn->sn_timer_active = 1;
 182         timer->stt_expires = cfs_time_add(sn->sn_timeout,
 183                                           cfs_time_current_sec());
 184         stt_add_timer(timer);
 185         return;
 186 }
 187
 188 int
 189 sfw_del_session_timer (void)
 190 {
 191         sfw_session_t *sn = sfw_data.fw_session;
 192
 193         if (sn == NULL || !sn->sn_timer_active)
 194                 return 0;
 195
 196         LASSERT (sn->sn_timeout != 0);
 197
 198         if (stt_del_timer(&sn->sn_timer)) { /* timer defused */
 199                 sn->sn_timer_active = 0;
 200                 return 0;
 201         }
 202
 203 #ifndef __KERNEL__
 204         /* Racing is impossible in single-threaded userland selftest */
 205         LBUG();
 206 #endif
 207         return EBUSY; /* racing with sfw_session_expired() */
 208 }
 209
 210 /* called with sfw_data.fw_lock held */
 211 static void
 212 sfw_deactivate_session (void)
 213 __must_hold(&sfw_data.fw_lock)
 214 {
 215         sfw_session_t *sn = sfw_data.fw_session;
 216         int            nactive = 0;
 217         sfw_batch_t   *tsb;
 218         sfw_test_case_t *tsc;
 219
 220         if (sn == NULL) return;
 221
 222         LASSERT(!sn->sn_timer_active);
 223
 224         sfw_data.fw_session = NULL;
 225         atomic_inc(&sfw_data.fw_nzombies);
 226         list_add(&sn->sn_list, &sfw_data.fw_zombie_sessions);
 227
 228         spin_unlock(&sfw_data.fw_lock);
 229
 230         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
 231                 srpc_abort_service(tsc->tsc_srv_service);
 232         }
 233
 234         spin_lock(&sfw_data.fw_lock);
 235
 236         list_for_each_entry(tsb, &sn->sn_batches, bat_list) {
 237                 if (sfw_batch_active(tsb)) {
 238                         nactive++;
 239                         sfw_stop_batch(tsb, 1);
 240                 }
 241         }
 242
 243         if (nactive != 0)
 244                 return; /* wait for active batches to stop */
 245
 246         list_del_init(&sn->sn_list);
 247         spin_unlock(&sfw_data.fw_lock);
 248
 249         sfw_destroy_session(sn);
 250
 251         spin_lock(&sfw_data.fw_lock);
 252 }
 253
 254 #ifndef __KERNEL__
 255
 256 int
 257 sfw_session_removed (void)
 258 {
 259         return (sfw_data.fw_session == NULL) ? 1 : 0;
 260 }
 261
 262 #endif
 263
 264 void
 265 sfw_session_expired (void *data)
 266 {
 267         sfw_session_t *sn = data;
 268
 269         spin_lock(&sfw_data.fw_lock);
 270
 271         LASSERT (sn->sn_timer_active);
 272         LASSERT (sn == sfw_data.fw_session);
 273
 274         CWARN ("Session expired! sid: %s-"LPU64", name: %s\n",
 275                libcfs_nid2str(sn->sn_id.ses_nid),
 276                sn->sn_id.ses_stamp, &sn->sn_name[0]);
 277
 278         sn->sn_timer_active = 0;
 279         sfw_deactivate_session();
 280
 281         spin_unlock(&sfw_data.fw_lock);
 282 }
 283
 284 static inline void
 285 sfw_init_session(sfw_session_t *sn, lst_sid_t sid,
 286                  unsigned features, const char *name)
 287 {
 288         stt_timer_t *timer = &sn->sn_timer;
 289
 290         memset(sn, 0, sizeof(sfw_session_t));
 291         INIT_LIST_HEAD(&sn->sn_list);
 292         INIT_LIST_HEAD(&sn->sn_batches);
 293         atomic_set(&sn->sn_refcount, 1);        /* +1 for caller */
 294         atomic_set(&sn->sn_brw_errors, 0);
 295         atomic_set(&sn->sn_ping_errors, 0);
 296         strlcpy(&sn->sn_name[0], name, sizeof(sn->sn_name));
 297
 298         sn->sn_timer_active = 0;
 299         sn->sn_id           = sid;
 300         sn->sn_features     = features;
 301         sn->sn_timeout      = session_timeout;
 302         sn->sn_started      = cfs_time_current();
 303
 304         timer->stt_data = sn;
 305         timer->stt_func = sfw_session_expired;
 306         INIT_LIST_HEAD(&timer->stt_list);
 307 }
 308
 309 /* completion handler for incoming framework RPCs */
 310 void
 311 sfw_server_rpc_done(struct srpc_server_rpc *rpc)
 312 {
 313         struct srpc_service     *sv     = rpc->srpc_scd->scd_svc;
 314         int                     status  = rpc->srpc_status;
 315
 316         CDEBUG (D_NET,
 317                 "Incoming framework RPC done: "
 318                 "service %s, peer %s, status %s:%d\n",
 319                 sv->sv_name, libcfs_id2str(rpc->srpc_peer),
 320                 swi_state2str(rpc->srpc_wi.swi_state),
 321                 status);
 322
 323         if (rpc->srpc_bulk != NULL)
 324                 sfw_free_pages(rpc);
 325         return;
 326 }
 327
 328 void
 329 sfw_client_rpc_fini (srpc_client_rpc_t *rpc)
 330 {
 331         LASSERT(rpc->crpc_bulk.bk_niov == 0);
 332         LASSERT(list_empty(&rpc->crpc_list));
 333         LASSERT(atomic_read(&rpc->crpc_refcount) == 0);
 334 #ifndef __KERNEL__
 335         LASSERT(rpc->crpc_bulk.bk_pages == NULL);
 336 #endif
 337
 338         CDEBUG(D_NET, "Outgoing framework RPC done: "
 339                "service %d, peer %s, status %s:%d:%d\n",
 340                rpc->crpc_service, libcfs_id2str(rpc->crpc_dest),
 341                swi_state2str(rpc->crpc_wi.swi_state),
 342                rpc->crpc_aborted, rpc->crpc_status);
 343
 344         spin_lock(&sfw_data.fw_lock);
 345
 346         /* my callers must finish all RPCs before shutting me down */
 347         LASSERT(!sfw_data.fw_shuttingdown);
 348         list_add(&rpc->crpc_list, &sfw_data.fw_zombie_rpcs);
 349
 350         spin_unlock(&sfw_data.fw_lock);
 351 }
 352
 353 sfw_batch_t *
 354 sfw_find_batch (lst_bid_t bid)
 355 {
 356         sfw_session_t *sn = sfw_data.fw_session;
 357         sfw_batch_t   *bat;
 358
 359         LASSERT(sn != NULL);
 360
 361         list_for_each_entry(bat, &sn->sn_batches, bat_list) {
 362                 if (bat->bat_id.bat_id == bid.bat_id)
 363                         return bat;
 364         }
 365
 366         return NULL;
 367 }
 368
 369 sfw_batch_t *
 370 sfw_bid2batch (lst_bid_t bid)
 371 {
 372         sfw_session_t *sn = sfw_data.fw_session;
 373         sfw_batch_t   *bat;
 374
 375         LASSERT (sn != NULL);
 376
 377         bat = sfw_find_batch(bid);
 378         if (bat != NULL)
 379                 return bat;
 380
 381         LIBCFS_ALLOC(bat, sizeof(sfw_batch_t));
 382         if (bat == NULL)
 383                 return NULL;
 384
 385         bat->bat_error   = 0;
 386         bat->bat_session = sn;
 387         bat->bat_id      = bid;
 388         atomic_set(&bat->bat_nactive, 0);
 389         INIT_LIST_HEAD(&bat->bat_tests);
 390
 391         list_add_tail(&bat->bat_list, &sn->sn_batches);
 392         return bat;
 393 }
 394
 395 int
 396 sfw_get_stats (srpc_stat_reqst_t *request, srpc_stat_reply_t *reply)
 397 {
 398         sfw_session_t  *sn = sfw_data.fw_session;
 399         sfw_counters_t *cnt = &reply->str_fw;
 400         sfw_batch_t    *bat;
 401         struct timeval  tv;
 402
 403         reply->str_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 404
 405         if (request->str_sid.ses_nid == LNET_NID_ANY) {
 406                 reply->str_status = EINVAL;
 407                 return 0;
 408         }
 409
 410         if (sn == NULL || !sfw_sid_equal(request->str_sid, sn->sn_id)) {
 411                 reply->str_status = ESRCH;
 412                 return 0;
 413         }
 414
 415         lnet_counters_get(&reply->str_lnet);
 416         srpc_get_counters(&reply->str_rpc);
 417
 418         /* send over the msecs since the session was started
 419          - with 32 bits to send, this is ~49 days */
 420         cfs_duration_usec(cfs_time_sub(cfs_time_current(),
 421                                        sn->sn_started), &tv);
 422
 423         cnt->running_ms      = (__u32)(tv.tv_sec * 1000 + tv.tv_usec / 1000);
 424         cnt->brw_errors      = atomic_read(&sn->sn_brw_errors);
 425         cnt->ping_errors     = atomic_read(&sn->sn_ping_errors);
 426         cnt->zombie_sessions = atomic_read(&sfw_data.fw_nzombies);
 427
 428         cnt->active_batches = 0;
 429         list_for_each_entry(bat, &sn->sn_batches, bat_list) {
 430                 if (atomic_read(&bat->bat_nactive) > 0)
 431                         cnt->active_batches++;
 432         }
 433
 434         reply->str_status = 0;
 435         return 0;
 436 }
 437
 438 int
 439 sfw_make_session(srpc_mksn_reqst_t *request, srpc_mksn_reply_t *reply)
 440 {
 441         sfw_session_t *sn = sfw_data.fw_session;
 442         srpc_msg_t    *msg = container_of(request, srpc_msg_t,
 443                                           msg_body.mksn_reqst);
 444         int            cplen = 0;
 445
 446         if (request->mksn_sid.ses_nid == LNET_NID_ANY) {
 447                 reply->mksn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 448                 reply->mksn_status = EINVAL;
 449                 return 0;
 450         }
 451
 452         if (sn != NULL) {
 453                 reply->mksn_status  = 0;
 454                 reply->mksn_sid     = sn->sn_id;
 455                 reply->mksn_timeout = sn->sn_timeout;
 456
 457                 if (sfw_sid_equal(request->mksn_sid, sn->sn_id)) {
 458                         atomic_inc(&sn->sn_refcount);
 459                         return 0;
 460                 }
 461
 462                 if (!request->mksn_force) {
 463                         reply->mksn_status = EBUSY;
 464                         cplen = strlcpy(&reply->mksn_name[0], &sn->sn_name[0],
 465                                         sizeof(reply->mksn_name));
 466                         if (cplen >= sizeof(reply->mksn_name))
 467                                 return -E2BIG;
 468                         return 0;
 469                 }
 470         }
 471
 472         /* reject the request if it requires unknown features
 473          * NB: old version will always accept all features because it's not
 474          * aware of srpc_msg_t::msg_ses_feats, it's a defect but it's also
 475          * harmless because it will return zero feature to console, and it's
 476          * console's responsibility to make sure all nodes in a session have
 477          * same feature mask. */
 478         if ((msg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 479                 reply->mksn_status = EPROTO;
 480                 return 0;
 481         }
 482
 483         /* brand new or create by force */
 484         LIBCFS_ALLOC(sn, sizeof(sfw_session_t));
 485         if (sn == NULL) {
 486                 CERROR("dropping RPC mksn under memory pressure\n");
 487                 return -ENOMEM;
 488         }
 489
 490         sfw_init_session(sn, request->mksn_sid,
 491                          msg->msg_ses_feats, &request->mksn_name[0]);
 492
 493         spin_lock(&sfw_data.fw_lock);
 494
 495         sfw_deactivate_session();
 496         LASSERT(sfw_data.fw_session == NULL);
 497         sfw_data.fw_session = sn;
 498
 499         spin_unlock(&sfw_data.fw_lock);
 500
 501         reply->mksn_status  = 0;
 502         reply->mksn_sid     = sn->sn_id;
 503         reply->mksn_timeout = sn->sn_timeout;
 504         return 0;
 505 }
 506
 507 int
 508 sfw_remove_session (srpc_rmsn_reqst_t *request, srpc_rmsn_reply_t *reply)
 509 {
 510         sfw_session_t *sn = sfw_data.fw_session;
 511
 512         reply->rmsn_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
 513
 514         if (request->rmsn_sid.ses_nid == LNET_NID_ANY) {
 515                 reply->rmsn_status = EINVAL;
 516                 return 0;
 517         }
 518
 519         if (sn == NULL || !sfw_sid_equal(request->rmsn_sid, sn->sn_id)) {
 520                 reply->rmsn_status = (sn == NULL) ? ESRCH : EBUSY;
 521                 return 0;
 522         }
 523
 524         if (!atomic_dec_and_test(&sn->sn_refcount)) {
 525                 reply->rmsn_status = 0;
 526                 return 0;
 527         }
 528
 529         spin_lock(&sfw_data.fw_lock);
 530         sfw_deactivate_session();
 531         spin_unlock(&sfw_data.fw_lock);
 532
 533         reply->rmsn_status = 0;
 534         reply->rmsn_sid    = LST_INVALID_SID;
 535         LASSERT(sfw_data.fw_session == NULL);
 536         return 0;
 537 }
 538
 539 int
 540 sfw_debug_session (srpc_debug_reqst_t *request, srpc_debug_reply_t *reply)
 541 {
 542         sfw_session_t *sn = sfw_data.fw_session;
 543
 544         if (sn == NULL) {
 545                 reply->dbg_status = ESRCH;
 546                 reply->dbg_sid    = LST_INVALID_SID;
 547                 return 0;
 548         }
 549
 550         reply->dbg_status  = 0;
 551         reply->dbg_sid     = sn->sn_id;
 552         reply->dbg_timeout = sn->sn_timeout;
 553         if (strlcpy(reply->dbg_name, &sn->sn_name[0], sizeof(reply->dbg_name))
 554             >= sizeof(reply->dbg_name))
 555                 return -E2BIG;
 556
 557         return 0;
 558 }
 559
 560 void
 561 sfw_test_rpc_fini (srpc_client_rpc_t *rpc)
 562 {
 563         sfw_test_unit_t     *tsu = rpc->crpc_priv;
 564         sfw_test_instance_t *tsi = tsu->tsu_instance;
 565
 566         /* Called with hold of tsi->tsi_lock */
 567         LASSERT(list_empty(&rpc->crpc_list));
 568         list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
 569 }
 570
 571 static inline int
 572 sfw_test_buffers(sfw_test_instance_t *tsi)
 573 {
 574         struct sfw_test_case    *tsc;
 575         struct srpc_service     *svc;
 576         int                     nbuf;
 577
 578         LASSERT(tsi != NULL);
 579         tsc = sfw_find_test_case(tsi->tsi_service);
 580         LASSERT(tsc != NULL);
 581         svc = tsc->tsc_srv_service;
 582         LASSERT(svc != NULL);
 583
 584         nbuf = min(svc->sv_wi_total, tsi->tsi_loop) / svc->sv_ncpts;
 585         return max(SFW_TEST_WI_MIN, nbuf + SFW_TEST_WI_EXTRA);
 586 }
 587
 588 int
 589 sfw_load_test(struct sfw_test_instance *tsi)
 590 {
 591         struct sfw_test_case    *tsc;
 592         struct srpc_service     *svc;
 593         int                     nbuf;
 594         int                     rc;
 595
 596         LASSERT(tsi != NULL);
 597         tsc = sfw_find_test_case(tsi->tsi_service);
 598         nbuf = sfw_test_buffers(tsi);
 599         LASSERT(tsc != NULL);
 600         svc = tsc->tsc_srv_service;
 601
 602         if (tsi->tsi_is_client) {
 603                 tsi->tsi_ops = tsc->tsc_cli_ops;
 604                 return 0;
 605         }
 606
 607         rc = srpc_service_add_buffers(svc, nbuf);
 608         if (rc != 0) {
 609                 CWARN("Failed to reserve enough buffers: "
 610                       "service %s, %d needed: %d\n", svc->sv_name, nbuf, rc);
 611                 /* NB: this error handler is not strictly correct, because
 612                  * it may release more buffers than already allocated,
 613                  * but it doesn't matter because request portal should
 614                  * be lazy portal and will grow buffers if necessary. */
 615                 srpc_service_remove_buffers(svc, nbuf);
 616                 return -ENOMEM;
 617         }
 618
 619         CDEBUG(D_NET, "Reserved %d buffers for test %s\n",
 620                nbuf * (srpc_serv_is_framework(svc) ?
 621                        1 : cfs_cpt_number(cfs_cpt_table)), svc->sv_name);
 622         return 0;
 623 }
 624
 625 void
 626 sfw_unload_test(struct sfw_test_instance *tsi)
 627 {
 628         struct sfw_test_case *tsc;
 629
 630         LASSERT(tsi != NULL);
 631         tsc = sfw_find_test_case(tsi->tsi_service);
 632         LASSERT(tsc != NULL);
 633
 634         if (tsi->tsi_is_client)
 635                 return;
 636
 637         /* shrink buffers, because request portal is lazy portal
 638          * which can grow buffers at runtime so we may leave
 639          * some buffers behind, but never mind... */
 640         srpc_service_remove_buffers(tsc->tsc_srv_service,
 641                                     sfw_test_buffers(tsi));
 642         return;
 643 }
 644
 645 void
 646 sfw_destroy_test_instance (sfw_test_instance_t *tsi)
 647 {
 648         srpc_client_rpc_t *rpc;
 649         sfw_test_unit_t   *tsu;
 650
 651         if (!tsi->tsi_is_client) goto clean;
 652
 653         tsi->tsi_ops->tso_fini(tsi);
 654
 655         LASSERT(!tsi->tsi_stopping);
 656         LASSERT(list_empty(&tsi->tsi_active_rpcs));
 657         LASSERT(!sfw_test_active(tsi));
 658
 659         while (!list_empty(&tsi->tsi_units)) {
 660                 tsu = list_entry(tsi->tsi_units.next,
 661                                  sfw_test_unit_t, tsu_list);
 662                 list_del(&tsu->tsu_list);
 663                 LIBCFS_FREE(tsu, sizeof(*tsu));
 664         }
 665
 666         while (!list_empty(&tsi->tsi_free_rpcs)) {
 667                 rpc = list_entry(tsi->tsi_free_rpcs.next,
 668                                  srpc_client_rpc_t, crpc_list);
 669                 list_del(&rpc->crpc_list);
 670                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
 671         }
 672
 673 clean:
 674         sfw_unload_test(tsi);
 675         LIBCFS_FREE(tsi, sizeof(*tsi));
 676         return;
 677 }
 678
 679 void
 680 sfw_destroy_batch (sfw_batch_t *tsb)
 681 {
 682         sfw_test_instance_t *tsi;
 683
 684         LASSERT(!sfw_batch_active(tsb));
 685         LASSERT(list_empty(&tsb->bat_list));
 686
 687         while (!list_empty(&tsb->bat_tests)) {
 688                 tsi = list_entry(tsb->bat_tests.next,
 689                                  sfw_test_instance_t, tsi_list);
 690                 list_del_init(&tsi->tsi_list);
 691                 sfw_destroy_test_instance(tsi);
 692         }
 693
 694         LIBCFS_FREE(tsb, sizeof(sfw_batch_t));
 695         return;
 696 }
 697
 698 void
 699 sfw_destroy_session (sfw_session_t *sn)
 700 {
 701         sfw_batch_t *batch;
 702
 703         LASSERT(list_empty(&sn->sn_list));
 704         LASSERT(sn != sfw_data.fw_session);
 705
 706         while (!list_empty(&sn->sn_batches)) {
 707                 batch = list_entry(sn->sn_batches.next,
 708                                    sfw_batch_t, bat_list);
 709                 list_del_init(&batch->bat_list);
 710                 sfw_destroy_batch(batch);
 711         }
 712
 713         LIBCFS_FREE(sn, sizeof(*sn));
 714         atomic_dec(&sfw_data.fw_nzombies);
 715         return;
 716 }
 717
 718 void
 719 sfw_unpack_addtest_req(srpc_msg_t *msg)
 720 {
 721         srpc_test_reqst_t *req = &msg->msg_body.tes_reqst;
 722
 723         LASSERT (msg->msg_type == SRPC_MSG_TEST_REQST);
 724         LASSERT (req->tsr_is_client);
 725
 726         if (msg->msg_magic == SRPC_MSG_MAGIC)
 727                 return; /* no flipping needed */
 728
 729         LASSERT (msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 730
 731         if (req->tsr_service == SRPC_SERVICE_BRW) {
 732                 if ((msg->msg_ses_feats & LST_FEAT_BULK_LEN) == 0) {
 733                         test_bulk_req_t *bulk = &req->tsr_u.bulk_v0;
 734
 735                         __swab32s(&bulk->blk_opc);
 736                         __swab32s(&bulk->blk_npg);
 737                         __swab32s(&bulk->blk_flags);
 738
 739                 } else {
 740                         test_bulk_req_v1_t *bulk = &req->tsr_u.bulk_v1;
 741
 742                         __swab16s(&bulk->blk_opc);
 743                         __swab16s(&bulk->blk_flags);
 744                         __swab32s(&bulk->blk_offset);
 745                         __swab32s(&bulk->blk_len);
 746                 }
 747
 748                 return;
 749         }
 750
 751         if (req->tsr_service == SRPC_SERVICE_PING) {
 752                 test_ping_req_t *ping = &req->tsr_u.ping;
 753
 754                 __swab32s(&ping->png_size);
 755                 __swab32s(&ping->png_flags);
 756                 return;
 757         }
 758
 759         LBUG();
 760         return;
 761 }
 762
 763 int
 764 sfw_add_test_instance (sfw_batch_t *tsb, srpc_server_rpc_t *rpc)
 765 {
 766         srpc_msg_t          *msg = &rpc->srpc_reqstbuf->buf_msg;
 767         srpc_test_reqst_t   *req = &msg->msg_body.tes_reqst;
 768         srpc_bulk_t         *bk = rpc->srpc_bulk;
 769         int                  ndest = req->tsr_ndest;
 770         sfw_test_unit_t     *tsu;
 771         sfw_test_instance_t *tsi;
 772         int                  i;
 773         int                  rc;
 774
 775         LIBCFS_ALLOC(tsi, sizeof(*tsi));
 776         if (tsi == NULL) {
 777                 CERROR ("Can't allocate test instance for batch: "LPU64"\n",
 778                         tsb->bat_id.bat_id);
 779                 return -ENOMEM;
 780         }
 781
 782         memset(tsi, 0, sizeof(*tsi));
 783         spin_lock_init(&tsi->tsi_lock);
 784         atomic_set(&tsi->tsi_nactive, 0);
 785         INIT_LIST_HEAD(&tsi->tsi_units);
 786         INIT_LIST_HEAD(&tsi->tsi_free_rpcs);
 787         INIT_LIST_HEAD(&tsi->tsi_active_rpcs);
 788
 789         tsi->tsi_stopping      = 0;
 790         tsi->tsi_batch         = tsb;
 791         tsi->tsi_loop          = req->tsr_loop;
 792         tsi->tsi_concur        = req->tsr_concur;
 793         tsi->tsi_service       = req->tsr_service;
 794         tsi->tsi_is_client     = !!(req->tsr_is_client);
 795         tsi->tsi_stoptsu_onerr = !!(req->tsr_stop_onerr);
 796
 797         rc = sfw_load_test(tsi);
 798         if (rc != 0) {
 799                 LIBCFS_FREE(tsi, sizeof(*tsi));
 800                 return rc;
 801         }
 802
 803         LASSERT (!sfw_batch_active(tsb));
 804
 805         if (!tsi->tsi_is_client) {
 806                 /* it's test server, just add it to tsb */
 807                 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
 808                 return 0;
 809         }
 810
 811         LASSERT (bk != NULL);
 812 #ifndef __KERNEL__
 813         LASSERT (bk->bk_pages != NULL);
 814 #endif
 815         LASSERT (bk->bk_niov * SFW_ID_PER_PAGE >= (unsigned int)ndest);
 816         LASSERT((unsigned int)bk->bk_len >=
 817                 sizeof(lnet_process_id_packed_t) * ndest);
 818
 819         sfw_unpack_addtest_req(msg);
 820         memcpy(&tsi->tsi_u, &req->tsr_u, sizeof(tsi->tsi_u));
 821
 822         for (i = 0; i < ndest; i++) {
 823                 lnet_process_id_packed_t *dests;
 824                 lnet_process_id_packed_t  id;
 825                 int                       j;
 826
 827 #ifdef __KERNEL__
 828                 dests = page_address(bk->bk_iovs[i / SFW_ID_PER_PAGE].kiov_page);
 829                 LASSERT (dests != NULL);  /* my pages are within KVM always */
 830 #else
 831                 dests = page_address(bk->bk_pages[i / SFW_ID_PER_PAGE]);
 832 #endif
 833                 id = dests[i % SFW_ID_PER_PAGE];
 834                 if (msg->msg_magic != SRPC_MSG_MAGIC)
 835                         sfw_unpack_id(id);
 836
 837                 for (j = 0; j < tsi->tsi_concur; j++) {
 838                         LIBCFS_ALLOC(tsu, sizeof(sfw_test_unit_t));
 839                         if (tsu == NULL) {
 840                                 rc = -ENOMEM;
 841                                 CERROR ("Can't allocate tsu for %d\n",
 842                                         tsi->tsi_service);
 843                                 goto error;
 844                         }
 845
 846                         tsu->tsu_dest.nid = id.nid;
 847                         tsu->tsu_dest.pid = id.pid;
 848                         tsu->tsu_instance = tsi;
 849                         tsu->tsu_private  = NULL;
 850                         list_add_tail(&tsu->tsu_list, &tsi->tsi_units);
 851                 }
 852         }
 853
 854         rc = tsi->tsi_ops->tso_init(tsi);
 855         if (rc == 0) {
 856                 list_add_tail(&tsi->tsi_list, &tsb->bat_tests);
 857                 return 0;
 858         }
 859
 860 error:
 861         LASSERT(rc != 0);
 862         sfw_destroy_test_instance(tsi);
 863         return rc;
 864 }
 865
 866 static void
 867 sfw_test_unit_done (sfw_test_unit_t *tsu)
 868 {
 869         sfw_test_instance_t *tsi = tsu->tsu_instance;
 870         sfw_batch_t         *tsb = tsi->tsi_batch;
 871         sfw_session_t       *sn = tsb->bat_session;
 872
 873         LASSERT (sfw_test_active(tsi));
 874
 875         if (!atomic_dec_and_test(&tsi->tsi_nactive))
 876                 return;
 877
 878         /* the test instance is done */
 879         spin_lock(&tsi->tsi_lock);
 880
 881         tsi->tsi_stopping = 0;
 882
 883         spin_unlock(&tsi->tsi_lock);
 884
 885         spin_lock(&sfw_data.fw_lock);
 886
 887         if (!atomic_dec_and_test(&tsb->bat_nactive) ||/* tsb still active */
 888             sn == sfw_data.fw_session) {                  /* sn also active */
 889                 spin_unlock(&sfw_data.fw_lock);
 890                 return;
 891         }
 892
 893         LASSERT(!list_empty(&sn->sn_list)); /* I'm a zombie! */
 894
 895         list_for_each_entry(tsb, &sn->sn_batches, bat_list) {
 896                 if (sfw_batch_active(tsb)) {
 897                         spin_unlock(&sfw_data.fw_lock);
 898                         return;
 899                 }
 900         }
 901
 902         list_del_init(&sn->sn_list);
 903         spin_unlock(&sfw_data.fw_lock);
 904
 905         sfw_destroy_session(sn);
 906         return;
 907 }
 908
 909 void
 910 sfw_test_rpc_done (srpc_client_rpc_t *rpc)
 911 {
 912         sfw_test_unit_t     *tsu = rpc->crpc_priv;
 913         sfw_test_instance_t *tsi = tsu->tsu_instance;
 914         int                  done = 0;
 915
 916         tsi->tsi_ops->tso_done_rpc(tsu, rpc);
 917
 918         spin_lock(&tsi->tsi_lock);
 919
 920         LASSERT(sfw_test_active(tsi));
 921         LASSERT(!list_empty(&rpc->crpc_list));
 922
 923         list_del_init(&rpc->crpc_list);
 924
 925         /* batch is stopping or loop is done or get error */
 926         if (tsi->tsi_stopping ||
 927             tsu->tsu_loop == 0 ||
 928             (rpc->crpc_status != 0 && tsi->tsi_stoptsu_onerr))
 929                 done = 1;
 930
 931         /* dec ref for poster */
 932         srpc_client_rpc_decref(rpc);
 933
 934         spin_unlock(&tsi->tsi_lock);
 935
 936         if (!done) {
 937                 swi_schedule_workitem(&tsu->tsu_worker);
 938                 return;
 939         }
 940
 941         sfw_test_unit_done(tsu);
 942         return;
 943 }
 944
 945 int
 946 sfw_create_test_rpc(sfw_test_unit_t *tsu, lnet_process_id_t peer,
 947                     unsigned features, int nblk, int blklen,
 948                     srpc_client_rpc_t **rpcpp)
 949 {
 950         srpc_client_rpc_t   *rpc = NULL;
 951         sfw_test_instance_t *tsi = tsu->tsu_instance;
 952
 953         spin_lock(&tsi->tsi_lock);
 954
 955         LASSERT (sfw_test_active(tsi));
 956
 957         if (!list_empty(&tsi->tsi_free_rpcs)) {
 958                 /* pick request from buffer */
 959                 rpc = list_entry(tsi->tsi_free_rpcs.next,
 960                                  srpc_client_rpc_t, crpc_list);
 961                 LASSERT(nblk == rpc->crpc_bulk.bk_niov);
 962                 list_del_init(&rpc->crpc_list);
 963         }
 964
 965         spin_unlock(&tsi->tsi_lock);
 966
 967         if (rpc == NULL) {
 968                 rpc = srpc_create_client_rpc(peer, tsi->tsi_service, nblk,
 969                                              blklen, sfw_test_rpc_done,
 970                                              sfw_test_rpc_fini, tsu);
 971         } else {
 972                 srpc_init_client_rpc(rpc, peer, tsi->tsi_service, nblk,
 973                                      blklen, sfw_test_rpc_done,
 974                                      sfw_test_rpc_fini, tsu);
 975         }
 976
 977         if (rpc == NULL) {
 978                 CERROR("Can't create rpc for test %d\n", tsi->tsi_service);
 979                 return -ENOMEM;
 980         }
 981
 982         rpc->crpc_reqstmsg.msg_ses_feats = features;
 983         *rpcpp = rpc;
 984
 985         return 0;
 986 }
 987
 988 int
 989 sfw_run_test (swi_workitem_t *wi)
 990 {
 991         sfw_test_unit_t     *tsu = wi->swi_workitem.wi_data;
 992         sfw_test_instance_t *tsi = tsu->tsu_instance;
 993         srpc_client_rpc_t   *rpc = NULL;
 994
 995         LASSERT (wi == &tsu->tsu_worker);
 996
 997         if (tsi->tsi_ops->tso_prep_rpc(tsu, tsu->tsu_dest, &rpc) != 0) {
 998                 LASSERT (rpc == NULL);
 999                 goto test_done;
1000         }
1001
1002         LASSERT (rpc != NULL);
1003
1004         spin_lock(&tsi->tsi_lock);
1005
1006         if (tsi->tsi_stopping) {
1007                 list_add(&rpc->crpc_list, &tsi->tsi_free_rpcs);
1008                 spin_unlock(&tsi->tsi_lock);
1009                 goto test_done;
1010         }
1011
1012         if (tsu->tsu_loop > 0)
1013                 tsu->tsu_loop--;
1014
1015         list_add_tail(&rpc->crpc_list, &tsi->tsi_active_rpcs);
1016         spin_unlock(&tsi->tsi_lock);
1017
1018         spin_lock(&rpc->crpc_lock);
1019         rpc->crpc_timeout = rpc_timeout;
1020         srpc_post_rpc(rpc);
1021         spin_unlock(&rpc->crpc_lock);
1022         return 0;
1023
1024 test_done:
1025         /*
1026          * No one can schedule me now since:
1027          * - previous RPC, if any, has done and
1028          * - no new RPC is initiated.
1029          * - my batch is still active; no one can run it again now.
1030          * Cancel pending schedules and prevent future schedule attempts:
1031          */
1032         swi_exit_workitem(wi);
1033         sfw_test_unit_done(tsu);
1034         return 1;
1035 }
1036
1037 int
1038 sfw_run_batch (sfw_batch_t *tsb)
1039 {
1040         swi_workitem_t      *wi;
1041         sfw_test_unit_t     *tsu;
1042         sfw_test_instance_t *tsi;
1043
1044         if (sfw_batch_active(tsb)) {
1045                 CDEBUG(D_NET, "Batch already active: "LPU64" (%d)\n",
1046                        tsb->bat_id.bat_id, atomic_read(&tsb->bat_nactive));
1047                 return 0;
1048         }
1049
1050         list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1051                 if (!tsi->tsi_is_client)        /* skip server instances */
1052                         continue;
1053
1054                 LASSERT(!tsi->tsi_stopping);
1055                 LASSERT(!sfw_test_active(tsi));
1056
1057                 atomic_inc(&tsb->bat_nactive);
1058
1059                 list_for_each_entry(tsu, &tsi->tsi_units, tsu_list) {
1060                         atomic_inc(&tsi->tsi_nactive);
1061                         tsu->tsu_loop = tsi->tsi_loop;
1062                         wi = &tsu->tsu_worker;
1063                         swi_init_workitem(wi, tsu, sfw_run_test,
1064                                           lst_sched_test[\
1065                                           lnet_cpt_of_nid(tsu->tsu_dest.nid)]);
1066                         swi_schedule_workitem(wi);
1067                 }
1068         }
1069
1070         return 0;
1071 }
1072
1073 int
1074 sfw_stop_batch (sfw_batch_t *tsb, int force)
1075 {
1076         sfw_test_instance_t *tsi;
1077         srpc_client_rpc_t   *rpc;
1078
1079         if (!sfw_batch_active(tsb)) {
1080                 CDEBUG(D_NET, "Batch "LPU64" inactive\n", tsb->bat_id.bat_id);
1081                 return 0;
1082         }
1083
1084         list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1085                 spin_lock(&tsi->tsi_lock);
1086
1087                 if (!tsi->tsi_is_client ||
1088                     !sfw_test_active(tsi) || tsi->tsi_stopping) {
1089                         spin_unlock(&tsi->tsi_lock);
1090                         continue;
1091                 }
1092
1093                 tsi->tsi_stopping = 1;
1094
1095                 if (!force) {
1096                         spin_unlock(&tsi->tsi_lock);
1097                         continue;
1098                 }
1099
1100                 /* abort launched rpcs in the test */
1101                 list_for_each_entry(rpc, &tsi->tsi_active_rpcs, crpc_list) {
1102                         spin_lock(&rpc->crpc_lock);
1103
1104                         srpc_abort_rpc(rpc, -EINTR);
1105
1106                         spin_unlock(&rpc->crpc_lock);
1107                 }
1108
1109                 spin_unlock(&tsi->tsi_lock);
1110         }
1111
1112         return 0;
1113 }
1114
1115 int
1116 sfw_query_batch (sfw_batch_t *tsb, int testidx, srpc_batch_reply_t *reply)
1117 {
1118         sfw_test_instance_t *tsi;
1119
1120         if (testidx < 0)
1121                 return -EINVAL;
1122
1123         if (testidx == 0) {
1124                 reply->bar_active = atomic_read(&tsb->bat_nactive);
1125                 return 0;
1126         }
1127
1128         list_for_each_entry(tsi, &tsb->bat_tests, tsi_list) {
1129                 if (testidx-- > 1)
1130                         continue;
1131
1132                 reply->bar_active = atomic_read(&tsi->tsi_nactive);
1133                 return 0;
1134         }
1135
1136         return -ENOENT;
1137 }
1138
1139 void
1140 sfw_free_pages (srpc_server_rpc_t *rpc)
1141 {
1142         srpc_free_bulk(rpc->srpc_bulk);
1143         rpc->srpc_bulk = NULL;
1144 }
1145
1146 int
1147 sfw_alloc_pages(struct srpc_server_rpc *rpc, int cpt, int npages, int len,
1148                 int sink)
1149 {
1150         LASSERT(rpc->srpc_bulk == NULL);
1151         LASSERT(npages > 0 && npages <= LNET_MAX_IOV);
1152
1153         rpc->srpc_bulk = srpc_alloc_bulk(cpt, npages, len, sink);
1154         if (rpc->srpc_bulk == NULL)
1155                 return -ENOMEM;
1156
1157         return 0;
1158 }
1159
1160 int
1161 sfw_add_test (srpc_server_rpc_t *rpc)
1162 {
1163         sfw_session_t     *sn = sfw_data.fw_session;
1164         srpc_test_reply_t *reply = &rpc->srpc_replymsg.msg_body.tes_reply;
1165         srpc_test_reqst_t *request;
1166         int                rc;
1167         sfw_batch_t       *bat;
1168
1169         request = &rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst;
1170         reply->tsr_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
1171
1172         if (request->tsr_loop == 0 ||
1173             request->tsr_concur == 0 ||
1174             request->tsr_sid.ses_nid == LNET_NID_ANY ||
1175             request->tsr_ndest > SFW_MAX_NDESTS ||
1176             (request->tsr_is_client && request->tsr_ndest == 0) ||
1177             request->tsr_concur > SFW_MAX_CONCUR ||
1178             request->tsr_service > SRPC_SERVICE_MAX_ID ||
1179             request->tsr_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID) {
1180                 reply->tsr_status = EINVAL;
1181                 return 0;
1182         }
1183
1184         if (sn == NULL || !sfw_sid_equal(request->tsr_sid, sn->sn_id) ||
1185             sfw_find_test_case(request->tsr_service) == NULL) {
1186                 reply->tsr_status = ENOENT;
1187                 return 0;
1188         }
1189
1190         bat = sfw_bid2batch(request->tsr_bid);
1191         if (bat == NULL) {
1192                 CERROR("dropping RPC %s from %s under memory pressure\n",
1193                         rpc->srpc_scd->scd_svc->sv_name,
1194                         libcfs_id2str(rpc->srpc_peer));
1195                 return -ENOMEM;
1196         }
1197
1198         if (sfw_batch_active(bat)) {
1199                 reply->tsr_status = EBUSY;
1200                 return 0;
1201         }
1202
1203         if (request->tsr_is_client && rpc->srpc_bulk == NULL) {
1204                 /* rpc will be resumed later in sfw_bulk_ready */
1205                 int     npg = sfw_id_pages(request->tsr_ndest);
1206                 int     len;
1207
1208                 if ((sn->sn_features & LST_FEAT_BULK_LEN) == 0) {
1209                         len = npg * PAGE_CACHE_SIZE;
1210
1211                 } else  {
1212                         len = sizeof(lnet_process_id_packed_t) *
1213                               request->tsr_ndest;
1214                 }
1215
1216                 return sfw_alloc_pages(rpc, CFS_CPT_ANY, npg, len, 1);
1217         }
1218
1219         rc = sfw_add_test_instance(bat, rpc);
1220         CDEBUG (rc == 0 ? D_NET : D_WARNING,
1221                 "%s test: sv %d %s, loop %d, concur %d, ndest %d\n",
1222                 rc == 0 ? "Added" : "Failed to add", request->tsr_service,
1223                 request->tsr_is_client ? "client" : "server",
1224                 request->tsr_loop, request->tsr_concur, request->tsr_ndest);
1225
1226         reply->tsr_status = (rc < 0) ? -rc : rc;
1227         return 0;
1228 }
1229
1230 int
1231 sfw_control_batch (srpc_batch_reqst_t *request, srpc_batch_reply_t *reply)
1232 {
1233         sfw_session_t *sn = sfw_data.fw_session;
1234         int            rc = 0;
1235         sfw_batch_t   *bat;
1236
1237         reply->bar_sid = (sn == NULL) ? LST_INVALID_SID : sn->sn_id;
1238
1239         if (sn == NULL || !sfw_sid_equal(request->bar_sid, sn->sn_id)) {
1240                 reply->bar_status = ESRCH;
1241                 return 0;
1242         }
1243
1244         bat = sfw_find_batch(request->bar_bid);
1245         if (bat == NULL) {
1246                 reply->bar_status = ENOENT;
1247                 return 0;
1248         }
1249
1250         switch (request->bar_opc) {
1251         case SRPC_BATCH_OPC_RUN:
1252                 rc = sfw_run_batch(bat);
1253                 break;
1254
1255         case SRPC_BATCH_OPC_STOP:
1256                 rc = sfw_stop_batch(bat, request->bar_arg);
1257                 break;
1258
1259         case SRPC_BATCH_OPC_QUERY:
1260                 rc = sfw_query_batch(bat, request->bar_testidx, reply);
1261                 break;
1262
1263         default:
1264                 return -EINVAL; /* drop it */
1265         }
1266
1267         reply->bar_status = (rc < 0) ? -rc : rc;
1268         return 0;
1269 }
1270
1271 int
1272 sfw_handle_server_rpc(struct srpc_server_rpc *rpc)
1273 {
1274         struct srpc_service     *sv = rpc->srpc_scd->scd_svc;
1275         srpc_msg_t     *reply   = &rpc->srpc_replymsg;
1276         srpc_msg_t     *request = &rpc->srpc_reqstbuf->buf_msg;
1277         unsigned        features = LST_FEATS_MASK;
1278         int             rc = 0;
1279
1280         LASSERT(sfw_data.fw_active_srpc == NULL);
1281         LASSERT(sv->sv_id <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1282
1283         spin_lock(&sfw_data.fw_lock);
1284
1285         if (sfw_data.fw_shuttingdown) {
1286                 spin_unlock(&sfw_data.fw_lock);
1287                 return -ESHUTDOWN;
1288         }
1289
1290         /* Remove timer to avoid racing with it or expiring active session */
1291         if (sfw_del_session_timer() != 0) {
1292                 CERROR("dropping RPC %s from %s: racing with expiry timer\n",
1293                        sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1294                 spin_unlock(&sfw_data.fw_lock);
1295                 return -EAGAIN;
1296         }
1297
1298         sfw_data.fw_active_srpc = rpc;
1299         spin_unlock(&sfw_data.fw_lock);
1300
1301         sfw_unpack_message(request);
1302         LASSERT(request->msg_type == srpc_service2request(sv->sv_id));
1303
1304         /* rpc module should have checked this */
1305         LASSERT(request->msg_version == SRPC_MSG_VERSION);
1306
1307         if (sv->sv_id != SRPC_SERVICE_MAKE_SESSION &&
1308             sv->sv_id != SRPC_SERVICE_DEBUG) {
1309                 sfw_session_t *sn = sfw_data.fw_session;
1310
1311                 if (sn != NULL &&
1312                     sn->sn_features != request->msg_ses_feats) {
1313                         CNETERR("Features of framework RPC don't match "
1314                                 "features of current session: %x/%x\n",
1315                                 request->msg_ses_feats, sn->sn_features);
1316                         reply->msg_body.reply.status = EPROTO;
1317                         reply->msg_body.reply.sid    = sn->sn_id;
1318                         goto out;
1319                 }
1320
1321         } else if ((request->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
1322                 /* NB: at this point, old version will ignore features and
1323                  * create new session anyway, so console should be able
1324                  * to handle this */
1325                 reply->msg_body.reply.status = EPROTO;
1326                 goto out;
1327         }
1328
1329         switch(sv->sv_id) {
1330         default:
1331                 LBUG ();
1332         case SRPC_SERVICE_TEST:
1333                 rc = sfw_add_test(rpc);
1334                 break;
1335
1336         case SRPC_SERVICE_BATCH:
1337                 rc = sfw_control_batch(&request->msg_body.bat_reqst,
1338                                        &reply->msg_body.bat_reply);
1339                 break;
1340
1341         case SRPC_SERVICE_QUERY_STAT:
1342                 rc = sfw_get_stats(&request->msg_body.stat_reqst,
1343                                    &reply->msg_body.stat_reply);
1344                 break;
1345
1346         case SRPC_SERVICE_DEBUG:
1347                 rc = sfw_debug_session(&request->msg_body.dbg_reqst,
1348                                        &reply->msg_body.dbg_reply);
1349                 break;
1350
1351         case SRPC_SERVICE_MAKE_SESSION:
1352                 rc = sfw_make_session(&request->msg_body.mksn_reqst,
1353                                       &reply->msg_body.mksn_reply);
1354                 break;
1355
1356         case SRPC_SERVICE_REMOVE_SESSION:
1357                 rc = sfw_remove_session(&request->msg_body.rmsn_reqst,
1358                                         &reply->msg_body.rmsn_reply);
1359                 break;
1360         }
1361
1362         if (sfw_data.fw_session != NULL)
1363                 features = sfw_data.fw_session->sn_features;
1364  out:
1365         reply->msg_ses_feats = features;
1366         rpc->srpc_done = sfw_server_rpc_done;
1367         spin_lock(&sfw_data.fw_lock);
1368
1369 #ifdef __KERNEL__
1370         if (!sfw_data.fw_shuttingdown)
1371                 sfw_add_session_timer();
1372 #else
1373         LASSERT(!sfw_data.fw_shuttingdown);
1374         sfw_add_session_timer();
1375 #endif
1376
1377         sfw_data.fw_active_srpc = NULL;
1378         spin_unlock(&sfw_data.fw_lock);
1379         return rc;
1380 }
1381
1382 int
1383 sfw_bulk_ready(struct srpc_server_rpc *rpc, int status)
1384 {
1385         struct srpc_service     *sv = rpc->srpc_scd->scd_svc;
1386         int                     rc;
1387
1388         LASSERT(rpc->srpc_bulk != NULL);
1389         LASSERT(sv->sv_id == SRPC_SERVICE_TEST);
1390         LASSERT(sfw_data.fw_active_srpc == NULL);
1391         LASSERT(rpc->srpc_reqstbuf->buf_msg.msg_body.tes_reqst.tsr_is_client);
1392
1393         spin_lock(&sfw_data.fw_lock);
1394
1395         if (status != 0) {
1396                 CERROR("Bulk transfer failed for RPC: "
1397                        "service %s, peer %s, status %d\n",
1398                        sv->sv_name, libcfs_id2str(rpc->srpc_peer), status);
1399                 spin_unlock(&sfw_data.fw_lock);
1400                 return -EIO;
1401         }
1402
1403         if (sfw_data.fw_shuttingdown) {
1404                 spin_unlock(&sfw_data.fw_lock);
1405                 return -ESHUTDOWN;
1406         }
1407
1408         if (sfw_del_session_timer() != 0) {
1409                 CERROR("dropping RPC %s from %s: racing with expiry timer\n",
1410                        sv->sv_name, libcfs_id2str(rpc->srpc_peer));
1411                 spin_unlock(&sfw_data.fw_lock);
1412                 return -EAGAIN;
1413         }
1414
1415         sfw_data.fw_active_srpc = rpc;
1416         spin_unlock(&sfw_data.fw_lock);
1417
1418         rc = sfw_add_test(rpc);
1419
1420         spin_lock(&sfw_data.fw_lock);
1421
1422 #ifdef __KERNEL__
1423         if (!sfw_data.fw_shuttingdown)
1424                 sfw_add_session_timer();
1425 #else
1426         LASSERT(!sfw_data.fw_shuttingdown);
1427         sfw_add_session_timer();
1428 #endif
1429
1430         sfw_data.fw_active_srpc = NULL;
1431         spin_unlock(&sfw_data.fw_lock);
1432         return rc;
1433 }
1434
1435 srpc_client_rpc_t *
1436 sfw_create_rpc(lnet_process_id_t peer, int service,
1437                unsigned features, int nbulkiov, int bulklen,
1438                void (*done)(srpc_client_rpc_t *), void *priv)
1439 {
1440         srpc_client_rpc_t *rpc = NULL;
1441
1442         spin_lock(&sfw_data.fw_lock);
1443
1444         LASSERT (!sfw_data.fw_shuttingdown);
1445         LASSERT (service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1446
1447         if (nbulkiov == 0 && !list_empty(&sfw_data.fw_zombie_rpcs)) {
1448                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1449                                      srpc_client_rpc_t, crpc_list);
1450                 list_del(&rpc->crpc_list);
1451
1452                 srpc_init_client_rpc(rpc, peer, service, 0, 0,
1453                                      done, sfw_client_rpc_fini, priv);
1454         }
1455
1456         spin_unlock(&sfw_data.fw_lock);
1457
1458         if (rpc == NULL) {
1459                 rpc = srpc_create_client_rpc(peer, service,
1460                                              nbulkiov, bulklen, done,
1461                                              nbulkiov != 0 ?  NULL :
1462                                              sfw_client_rpc_fini,
1463                                              priv);
1464         }
1465
1466         if (rpc != NULL) /* "session" is concept in framework */
1467                 rpc->crpc_reqstmsg.msg_ses_feats = features;
1468
1469         return rpc;
1470 }
1471
1472 void
1473 sfw_unpack_message (srpc_msg_t *msg)
1474 {
1475         if (msg->msg_magic == SRPC_MSG_MAGIC)
1476                 return; /* no flipping needed */
1477
1478         /* srpc module should guarantee I wouldn't get crap */
1479         LASSERT (msg->msg_magic == __swab32(SRPC_MSG_MAGIC));
1480
1481         if (msg->msg_type == SRPC_MSG_STAT_REQST) {
1482                 srpc_stat_reqst_t *req = &msg->msg_body.stat_reqst;
1483
1484                 __swab32s(&req->str_type);
1485                 __swab64s(&req->str_rpyid);
1486                 sfw_unpack_sid(req->str_sid);
1487                 return;
1488         }
1489
1490         if (msg->msg_type == SRPC_MSG_STAT_REPLY) {
1491                 srpc_stat_reply_t *rep = &msg->msg_body.stat_reply;
1492
1493                 __swab32s(&rep->str_status);
1494                 sfw_unpack_sid(rep->str_sid);
1495                 sfw_unpack_fw_counters(rep->str_fw);
1496                 sfw_unpack_rpc_counters(rep->str_rpc);
1497                 sfw_unpack_lnet_counters(rep->str_lnet);
1498                 return;
1499         }
1500
1501         if (msg->msg_type == SRPC_MSG_MKSN_REQST) {
1502                 srpc_mksn_reqst_t *req = &msg->msg_body.mksn_reqst;
1503
1504                 __swab64s(&req->mksn_rpyid);
1505                 __swab32s(&req->mksn_force);
1506                 sfw_unpack_sid(req->mksn_sid);
1507                 return;
1508         }
1509
1510         if (msg->msg_type == SRPC_MSG_MKSN_REPLY) {
1511                 srpc_mksn_reply_t *rep = &msg->msg_body.mksn_reply;
1512
1513                 __swab32s(&rep->mksn_status);
1514                 __swab32s(&rep->mksn_timeout);
1515                 sfw_unpack_sid(rep->mksn_sid);
1516                 return;
1517         }
1518
1519         if (msg->msg_type == SRPC_MSG_RMSN_REQST) {
1520                 srpc_rmsn_reqst_t *req = &msg->msg_body.rmsn_reqst;
1521
1522                 __swab64s(&req->rmsn_rpyid);
1523                 sfw_unpack_sid(req->rmsn_sid);
1524                 return;
1525         }
1526
1527         if (msg->msg_type == SRPC_MSG_RMSN_REPLY) {
1528                 srpc_rmsn_reply_t *rep = &msg->msg_body.rmsn_reply;
1529
1530                 __swab32s(&rep->rmsn_status);
1531                 sfw_unpack_sid(rep->rmsn_sid);
1532                 return;
1533         }
1534
1535         if (msg->msg_type == SRPC_MSG_DEBUG_REQST) {
1536                 srpc_debug_reqst_t *req = &msg->msg_body.dbg_reqst;
1537
1538                 __swab64s(&req->dbg_rpyid);
1539                 __swab32s(&req->dbg_flags);
1540                 sfw_unpack_sid(req->dbg_sid);
1541                 return;
1542         }
1543
1544         if (msg->msg_type == SRPC_MSG_DEBUG_REPLY) {
1545                 srpc_debug_reply_t *rep = &msg->msg_body.dbg_reply;
1546
1547                 __swab32s(&rep->dbg_nbatch);
1548                 __swab32s(&rep->dbg_timeout);
1549                 sfw_unpack_sid(rep->dbg_sid);
1550                 return;
1551         }
1552
1553         if (msg->msg_type == SRPC_MSG_BATCH_REQST) {
1554                 srpc_batch_reqst_t *req = &msg->msg_body.bat_reqst;
1555
1556                 __swab32s(&req->bar_opc);
1557                 __swab64s(&req->bar_rpyid);
1558                 __swab32s(&req->bar_testidx);
1559                 __swab32s(&req->bar_arg);
1560                 sfw_unpack_sid(req->bar_sid);
1561                 __swab64s(&req->bar_bid.bat_id);
1562                 return;
1563         }
1564
1565         if (msg->msg_type == SRPC_MSG_BATCH_REPLY) {
1566                 srpc_batch_reply_t *rep = &msg->msg_body.bat_reply;
1567
1568                 __swab32s(&rep->bar_status);
1569                 sfw_unpack_sid(rep->bar_sid);
1570                 return;
1571         }
1572
1573         if (msg->msg_type == SRPC_MSG_TEST_REQST) {
1574                 srpc_test_reqst_t *req = &msg->msg_body.tes_reqst;
1575
1576                 __swab64s(&req->tsr_rpyid);
1577                 __swab64s(&req->tsr_bulkid);
1578                 __swab32s(&req->tsr_loop);
1579                 __swab32s(&req->tsr_ndest);
1580                 __swab32s(&req->tsr_concur);
1581                 __swab32s(&req->tsr_service);
1582                 sfw_unpack_sid(req->tsr_sid);
1583                 __swab64s(&req->tsr_bid.bat_id);
1584                 return;
1585         }
1586
1587         if (msg->msg_type == SRPC_MSG_TEST_REPLY) {
1588                 srpc_test_reply_t *rep = &msg->msg_body.tes_reply;
1589
1590                 __swab32s(&rep->tsr_status);
1591                 sfw_unpack_sid(rep->tsr_sid);
1592                 return;
1593         }
1594
1595         if (msg->msg_type == SRPC_MSG_JOIN_REQST) {
1596                 srpc_join_reqst_t *req = &msg->msg_body.join_reqst;
1597
1598                 __swab64s(&req->join_rpyid);
1599                 sfw_unpack_sid(req->join_sid);
1600                 return;
1601         }
1602
1603         if (msg->msg_type == SRPC_MSG_JOIN_REPLY) {
1604                 srpc_join_reply_t *rep = &msg->msg_body.join_reply;
1605
1606                 __swab32s(&rep->join_status);
1607                 __swab32s(&rep->join_timeout);
1608                 sfw_unpack_sid(rep->join_sid);
1609                 return;
1610         }
1611
1612         LBUG ();
1613         return;
1614 }
1615
1616 void
1617 sfw_abort_rpc (srpc_client_rpc_t *rpc)
1618 {
1619         LASSERT(atomic_read(&rpc->crpc_refcount) > 0);
1620         LASSERT(rpc->crpc_service <= SRPC_FRAMEWORK_SERVICE_MAX_ID);
1621
1622         spin_lock(&rpc->crpc_lock);
1623         srpc_abort_rpc(rpc, -EINTR);
1624         spin_unlock(&rpc->crpc_lock);
1625         return;
1626 }
1627
1628 void
1629 sfw_post_rpc (srpc_client_rpc_t *rpc)
1630 {
1631         spin_lock(&rpc->crpc_lock);
1632
1633         LASSERT(!rpc->crpc_closed);
1634         LASSERT(!rpc->crpc_aborted);
1635         LASSERT(list_empty(&rpc->crpc_list));
1636         LASSERT(!sfw_data.fw_shuttingdown);
1637
1638         rpc->crpc_timeout = rpc_timeout;
1639         srpc_post_rpc(rpc);
1640
1641         spin_unlock(&rpc->crpc_lock);
1642         return;
1643 }
1644
1645 static srpc_service_t sfw_services[] =
1646 {
1647         {
1648                 /* sv_id */    SRPC_SERVICE_DEBUG,
1649                 /* sv_name */  "debug",
1650                 0
1651         },
1652         {
1653                 /* sv_id */    SRPC_SERVICE_QUERY_STAT,
1654                 /* sv_name */  "query stats",
1655                 0
1656         },
1657         {
1658                 /* sv_id */    SRPC_SERVICE_MAKE_SESSION,
1659                 /* sv_name */  "make session",
1660                 0
1661         },
1662         {
1663                 /* sv_id */    SRPC_SERVICE_REMOVE_SESSION,
1664                 /* sv_name */  "remove session",
1665                 0
1666         },
1667         {
1668                 /* sv_id */    SRPC_SERVICE_BATCH,
1669                 /* sv_name */  "batch service",
1670                 0
1671         },
1672         {
1673                 /* sv_id */    SRPC_SERVICE_TEST,
1674                 /* sv_name */  "test service",
1675                 0
1676         },
1677         {
1678                 /* sv_id */    0,
1679                 /* sv_name */  NULL,
1680                 0
1681         }
1682 };
1683
1684 extern sfw_test_client_ops_t ping_test_client;
1685 extern srpc_service_t        ping_test_service;
1686 extern void ping_init_test_client(void);
1687 extern void ping_init_test_service(void);
1688
1689 extern sfw_test_client_ops_t brw_test_client;
1690 extern srpc_service_t        brw_test_service;
1691 extern void brw_init_test_client(void);
1692 extern void brw_init_test_service(void);
1693
1694
1695 int
1696 sfw_startup (void)
1697 {
1698         int              i;
1699         int              rc;
1700         int              error;
1701         srpc_service_t  *sv;
1702         sfw_test_case_t *tsc;
1703
1704 #ifndef __KERNEL__
1705         char *s;
1706
1707         s = getenv("SESSION_TIMEOUT");
1708         session_timeout = s != NULL ? atoi(s) : session_timeout;
1709
1710         s = getenv("RPC_TIMEOUT");
1711         rpc_timeout = s != NULL ? atoi(s) : rpc_timeout;
1712 #endif
1713
1714         if (session_timeout < 0) {
1715                 CERROR ("Session timeout must be non-negative: %d\n",
1716                         session_timeout);
1717                 return -EINVAL;
1718         }
1719
1720         if (rpc_timeout < 0) {
1721                 CERROR ("RPC timeout must be non-negative: %d\n",
1722                         rpc_timeout);
1723                 return -EINVAL;
1724         }
1725
1726         if (session_timeout == 0)
1727                 CWARN ("Zero session_timeout specified "
1728                        "- test sessions never expire.\n");
1729
1730         if (rpc_timeout == 0)
1731                 CWARN ("Zero rpc_timeout specified "
1732                        "- test RPC never expire.\n");
1733
1734         memset(&sfw_data, 0, sizeof(struct smoketest_framework));
1735
1736         sfw_data.fw_session     = NULL;
1737         sfw_data.fw_active_srpc = NULL;
1738         spin_lock_init(&sfw_data.fw_lock);
1739         atomic_set(&sfw_data.fw_nzombies, 0);
1740         INIT_LIST_HEAD(&sfw_data.fw_tests);
1741         INIT_LIST_HEAD(&sfw_data.fw_zombie_rpcs);
1742         INIT_LIST_HEAD(&sfw_data.fw_zombie_sessions);
1743
1744         brw_init_test_client();
1745         brw_init_test_service();
1746         rc = sfw_register_test(&brw_test_service, &brw_test_client);
1747         LASSERT (rc == 0);
1748
1749         ping_init_test_client();
1750         ping_init_test_service();
1751         rc = sfw_register_test(&ping_test_service, &ping_test_client);
1752         LASSERT (rc == 0);
1753
1754         error = 0;
1755         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1756                 sv = tsc->tsc_srv_service;
1757
1758                 rc = srpc_add_service(sv);
1759                 LASSERT(rc != -EBUSY);
1760                 if (rc != 0) {
1761                         CWARN("Failed to add %s service: %d\n",
1762                               sv->sv_name, rc);
1763                         error = rc;
1764                 }
1765         }
1766
1767         for (i = 0; ; i++) {
1768                 sv = &sfw_services[i];
1769                 if (sv->sv_name == NULL) break;
1770
1771                 sv->sv_bulk_ready = NULL;
1772                 sv->sv_handler    = sfw_handle_server_rpc;
1773                 sv->sv_wi_total   = SFW_FRWK_WI_MAX;
1774                 if (sv->sv_id == SRPC_SERVICE_TEST)
1775                         sv->sv_bulk_ready = sfw_bulk_ready;
1776
1777                 rc = srpc_add_service(sv);
1778                 LASSERT (rc != -EBUSY);
1779                 if (rc != 0) {
1780                         CWARN ("Failed to add %s service: %d\n",
1781                                sv->sv_name, rc);
1782                         error = rc;
1783                 }
1784
1785                 /* about to sfw_shutdown, no need to add buffer */
1786                 if (error) continue;
1787
1788                 rc = srpc_service_add_buffers(sv, sv->sv_wi_total);
1789                 if (rc != 0) {
1790                         CWARN("Failed to reserve enough buffers: "
1791                               "service %s, %d needed: %d\n",
1792                               sv->sv_name, sv->sv_wi_total, rc);
1793                         error = -ENOMEM;
1794                 }
1795         }
1796
1797         if (error != 0)
1798                 sfw_shutdown();
1799         return error;
1800 }
1801
1802 void
1803 sfw_shutdown (void)
1804 {
1805         srpc_service_t  *sv;
1806         sfw_test_case_t *tsc;
1807         int              i;
1808
1809         spin_lock(&sfw_data.fw_lock);
1810
1811         sfw_data.fw_shuttingdown = 1;
1812 #ifdef __KERNEL__
1813         lst_wait_until(sfw_data.fw_active_srpc == NULL, sfw_data.fw_lock,
1814                        "waiting for active RPC to finish.\n");
1815 #else
1816         LASSERT (sfw_data.fw_active_srpc == NULL);
1817 #endif
1818
1819         if (sfw_del_session_timer() != 0)
1820                 lst_wait_until(sfw_data.fw_session == NULL, sfw_data.fw_lock,
1821                                "waiting for session timer to explode.\n");
1822
1823         sfw_deactivate_session();
1824         lst_wait_until(atomic_read(&sfw_data.fw_nzombies) == 0,
1825                        sfw_data.fw_lock,
1826                        "waiting for %d zombie sessions to die.\n",
1827                        atomic_read(&sfw_data.fw_nzombies));
1828
1829         spin_unlock(&sfw_data.fw_lock);
1830
1831         for (i = 0; ; i++) {
1832                 sv = &sfw_services[i];
1833                 if (sv->sv_name == NULL)
1834                         break;
1835
1836                 srpc_shutdown_service(sv);
1837                 srpc_remove_service(sv);
1838         }
1839
1840         list_for_each_entry(tsc, &sfw_data.fw_tests, tsc_list) {
1841                 sv = tsc->tsc_srv_service;
1842                 srpc_shutdown_service(sv);
1843                 srpc_remove_service(sv);
1844         }
1845
1846         while (!list_empty(&sfw_data.fw_zombie_rpcs)) {
1847                 srpc_client_rpc_t *rpc;
1848
1849                 rpc = list_entry(sfw_data.fw_zombie_rpcs.next,
1850                                  srpc_client_rpc_t, crpc_list);
1851                 list_del(&rpc->crpc_list);
1852
1853                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
1854         }
1855
1856         for (i = 0; ; i++) {
1857                 sv = &sfw_services[i];
1858                 if (sv->sv_name == NULL)
1859                         break;
1860
1861                 srpc_wait_service_shutdown(sv);
1862         }
1863
1864         while (!list_empty(&sfw_data.fw_tests)) {
1865                 tsc = list_entry(sfw_data.fw_tests.next,
1866                                  sfw_test_case_t, tsc_list);
1867
1868                 srpc_wait_service_shutdown(tsc->tsc_srv_service);
1869
1870                 list_del(&tsc->tsc_list);
1871                 LIBCFS_FREE(tsc, sizeof(*tsc));
1872         }
1873
1874         return;
1875 }