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

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