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