lnet/selftest/selftest.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
   5  *   Author: Isaac Huang <isaac@clusterfs.com>
   6  *
   7  */
   8 #ifndef __SELFTEST_SELFTEST_H__
   9 #define __SELFTEST_SELFTEST_H__
  10
  11 #define LNET_ONLY
  12
  13 #ifndef __KERNEL__
  14 #include <liblustre.h> /* userland spinlock_t and atomic_t */
  15 #endif
  16
  17 #include <libcfs/kp30.h>
  18 #include <libcfs/libcfs.h>
  19 #include <lnet/lnet.h>
  20 #include <lnet/lib-lnet.h>
  21 #include <lnet/lib-types.h>
  22 #include <lnet/lnetst.h>
  23
  24 #include "rpc.h"
  25 #include "timer.h"
  26
  27 #ifndef MADE_WITHOUT_COMPROMISE
  28 #define MADE_WITHOUT_COMPROMISE
  29 #endif
  30
  31
  32 #define SWI_STATE_NEWBORN                  0
  33 #define SWI_STATE_REPLY_SUBMITTED          1
  34 #define SWI_STATE_REPLY_SENT               2
  35 #define SWI_STATE_REQUEST_SUBMITTED        3
  36 #define SWI_STATE_REQUEST_SENT             4
  37 #define SWI_STATE_REPLY_RECEIVED           5
  38 #define SWI_STATE_BULK_STARTED             6
  39 #define SWI_STATE_DONE                     10
  40
  41 /* forward refs */
  42 struct swi_workitem;
  43 struct srpc_service;
  44 struct sfw_test_unit;
  45 struct sfw_test_instance;
  46
  47 /*
  48  * A workitems is deferred work with these semantics:
  49  * - a workitem always runs in thread context.
  50  * - a workitem can be concurrent with other workitems but is strictly
  51  *   serialized with respect to itself.
  52  * - no CPU affinity, a workitem does not necessarily run on the same CPU
  53  *   that schedules it. However, this might change in the future.
  54  * - if a workitem is scheduled again before it has a chance to run, it
  55  *   runs only once.
  56  * - if a workitem is scheduled while it runs, it runs again after it
  57  *   completes; this ensures that events occurring while other events are
  58  *   being processed receive due attention. This behavior also allows a
  59  *   workitem to reschedule itself.
  60  *
  61  * Usage notes:
  62  * - a workitem can sleep but it should be aware of how that sleep might
  63  *   affect others.
  64  * - a workitem runs inside a kernel thread so there's no user space to access.
  65  * - do not use a workitem if the scheduling latency can't be tolerated.
  66  *
  67  * When wi_action returns non-zero, it means the workitem has either been
  68  * freed or reused and workitem scheduler won't touch it any more.
  69  */
  70 typedef int (*swi_action_t) (struct swi_workitem *);
  71 typedef struct swi_workitem {
  72         struct list_head wi_list;        /* chain on runq */
  73         int              wi_state;
  74         swi_action_t     wi_action;
  75         void            *wi_data;
  76         unsigned int     wi_running:1;
  77         unsigned int     wi_scheduled:1;
  78 } swi_workitem_t;
  79
  80 static inline void
  81 swi_init_workitem (swi_workitem_t *wi, void *data, swi_action_t action)
  82 {
  83         CFS_INIT_LIST_HEAD(&wi->wi_list);
  84
  85         wi->wi_running   = 0;
  86         wi->wi_scheduled = 0;
  87         wi->wi_data      = data;
  88         wi->wi_action    = action;
  89         wi->wi_state     = SWI_STATE_NEWBORN;
  90 }
  91
  92 #define SWI_RESCHED    128         /* # workitem scheduler loops before reschedule */
  93
  94 /* services below SRPC_FRAMEWORK_SERVICE_MAX_ID are framework
  95  * services, e.g. create/modify session.
  96  */
  97 #define SRPC_SERVICE_DEBUG              0
  98 #define SRPC_SERVICE_MAKE_SESSION       1
  99 #define SRPC_SERVICE_REMOVE_SESSION     2
 100 #define SRPC_SERVICE_BATCH              3
 101 #define SRPC_SERVICE_TEST               4
 102 #define SRPC_SERVICE_QUERY_STAT         5
 103 #define SRPC_SERVICE_JOIN               6
 104 #define SRPC_FRAMEWORK_SERVICE_MAX_ID   10
 105 /* other services start from SRPC_FRAMEWORK_SERVICE_MAX_ID+1 */
 106 #define SRPC_SERVICE_BRW                11
 107 #define SRPC_SERVICE_PING               12
 108 #define SRPC_SERVICE_MAX_ID             12
 109
 110 #define SRPC_REQUEST_PORTAL             50
 111 /* a lazy portal for framework RPC requests */
 112 #define SRPC_FRAMEWORK_REQUEST_PORTAL   51
 113 /* all reply/bulk RDMAs go to this portal */
 114 #define SRPC_RDMA_PORTAL                52
 115
 116 static inline srpc_msg_type_t
 117 srpc_service2request (int service)
 118 {
 119         switch (service) {
 120         default:
 121                 LBUG ();
 122         case SRPC_SERVICE_DEBUG:
 123                 return SRPC_MSG_DEBUG_REQST;
 124
 125         case SRPC_SERVICE_MAKE_SESSION:
 126                 return SRPC_MSG_MKSN_REQST;
 127
 128         case SRPC_SERVICE_REMOVE_SESSION:
 129                 return SRPC_MSG_RMSN_REQST;
 130
 131         case SRPC_SERVICE_BATCH:
 132                 return SRPC_MSG_BATCH_REQST;
 133
 134         case SRPC_SERVICE_TEST:
 135                 return SRPC_MSG_TEST_REQST;
 136
 137         case SRPC_SERVICE_QUERY_STAT:
 138                 return SRPC_MSG_STAT_REQST;
 139
 140         case SRPC_SERVICE_BRW:
 141                 return SRPC_MSG_BRW_REQST;
 142
 143         case SRPC_SERVICE_PING:
 144                 return SRPC_MSG_PING_REQST;
 145
 146         case SRPC_SERVICE_JOIN:
 147                 return SRPC_MSG_JOIN_REQST;
 148         }
 149 }
 150
 151 static inline srpc_msg_type_t
 152 srpc_service2reply (int service)
 153 {
 154         return srpc_service2request(service) + 1;
 155 }
 156
 157 typedef enum {
 158         SRPC_BULK_REQ_RCVD   = 0, /* passive bulk request(PUT sink/GET source) received */
 159         SRPC_BULK_PUT_SENT   = 1, /* active bulk PUT sent (source) */
 160         SRPC_BULK_GET_RPLD   = 2, /* active bulk GET replied (sink) */
 161         SRPC_REPLY_RCVD      = 3, /* incoming reply received */
 162         SRPC_REPLY_SENT      = 4, /* outgoing reply sent */
 163         SRPC_REQUEST_RCVD    = 5, /* incoming request received */
 164         SRPC_REQUEST_SENT    = 6, /* outgoing request sent */
 165 } srpc_event_type_t;
 166
 167 /* RPC event */
 168 typedef struct {
 169         srpc_event_type_t ev_type;   /* what's up */
 170         lnet_event_kind_t ev_lnet;   /* LNet event type */
 171         int               ev_fired;  /* LNet event fired? */
 172         int               ev_status; /* LNet event status */
 173         void             *ev_data;   /* owning server/client RPC */
 174 } srpc_event_t;
 175
 176 typedef struct {
 177         int              bk_len;  /* len of bulk data */
 178         lnet_handle_md_t bk_mdh;
 179         int              bk_sink; /* sink/source */
 180         int              bk_niov; /* # iov in bk_iovs */
 181 #ifdef __KERNEL__
 182         lnet_kiov_t      bk_iovs[0];
 183 #else
 184         cfs_page_t     **bk_pages;
 185         lnet_md_iovec_t  bk_iovs[0];
 186 #endif
 187 } srpc_bulk_t; /* bulk descriptor */
 188
 189 typedef struct srpc_peer {
 190         struct list_head stp_list;     /* chain on peer hash */
 191         struct list_head stp_rpcq;     /* q of non-control RPCs */
 192         struct list_head stp_ctl_rpcq; /* q of control RPCs */
 193         spinlock_t       stp_lock;     /* serialize */
 194         lnet_nid_t       stp_nid;
 195         int              stp_credits;  /* available credits */
 196 } srpc_peer_t;
 197
 198 /* message buffer descriptor */
 199 typedef struct {
 200         struct list_head     buf_list; /* chain on srpc_service::*_msgq */
 201         srpc_msg_t           buf_msg;
 202         lnet_handle_md_t     buf_mdh;
 203         lnet_nid_t           buf_self;
 204         lnet_process_id_t    buf_peer;
 205 } srpc_buffer_t;
 206
 207 /* server-side state of a RPC */
 208 typedef struct srpc_server_rpc {
 209         struct list_head     srpc_list;    /* chain on srpc_service::*_rpcq */
 210         struct srpc_service *srpc_service;
 211         swi_workitem_t       srpc_wi;
 212         srpc_event_t         srpc_ev;      /* bulk/reply event */
 213         lnet_nid_t           srpc_self;
 214         lnet_process_id_t    srpc_peer;
 215         srpc_msg_t           srpc_replymsg;
 216         lnet_handle_md_t     srpc_replymdh;
 217         srpc_buffer_t       *srpc_reqstbuf;
 218         srpc_bulk_t         *srpc_bulk;
 219
 220         int                  srpc_status;
 221         void               (*srpc_done)(struct srpc_server_rpc *);
 222 } srpc_server_rpc_t;
 223
 224 /* client-side state of a RPC */
 225 typedef struct srpc_client_rpc {
 226         struct list_head     crpc_list;   /* chain on user's lists */
 227         struct list_head     crpc_privl;  /* chain on srpc_peer_t::*rpcq */
 228         spinlock_t           crpc_lock;   /* serialize */
 229         int                  crpc_service;
 230         atomic_t             crpc_refcount;
 231         int                  crpc_timeout; /* # seconds to wait for reply */
 232         stt_timer_t          crpc_timer;
 233         swi_workitem_t       crpc_wi;
 234         lnet_process_id_t    crpc_dest;
 235         srpc_peer_t         *crpc_peer;
 236
 237         void               (*crpc_done)(struct srpc_client_rpc *);
 238         void               (*crpc_fini)(struct srpc_client_rpc *);
 239         int                  crpc_status;    /* completion status */
 240         void                *crpc_priv;      /* caller data */
 241
 242         /* state flags */
 243         unsigned int         crpc_aborted:1; /* being given up */
 244         unsigned int         crpc_closed:1;  /* completed */
 245
 246         /* RPC events */
 247         srpc_event_t         crpc_bulkev;    /* bulk event */
 248         srpc_event_t         crpc_reqstev;   /* request event */
 249         srpc_event_t         crpc_replyev;   /* reply event */
 250
 251         /* bulk, request(reqst), and reply exchanged on wire */
 252         srpc_msg_t           crpc_reqstmsg;
 253         srpc_msg_t           crpc_replymsg;
 254         lnet_handle_md_t     crpc_reqstmdh;
 255         lnet_handle_md_t     crpc_replymdh;
 256         srpc_bulk_t          crpc_bulk;
 257 } srpc_client_rpc_t;
 258
 259 #define srpc_client_rpc_size(rpc)                                       \
 260 offsetof(srpc_client_rpc_t, crpc_bulk.bk_iovs[(rpc)->crpc_bulk.bk_niov])
 261
 262 #define srpc_client_rpc_addref(rpc)                                     \
 263 do {                                                                    \
 264         CDEBUG(D_NET, "RPC[%p] -> %s (%d)++\n",                         \
 265                (rpc), libcfs_id2str((rpc)->crpc_dest),                  \
 266                atomic_read(&(rpc)->crpc_refcount));                     \
 267         LASSERT(atomic_read(&(rpc)->crpc_refcount) > 0);                \
 268         atomic_inc(&(rpc)->crpc_refcount);                              \
 269 } while (0)
 270
 271 #define srpc_client_rpc_decref(rpc)                                     \
 272 do {                                                                    \
 273         CDEBUG(D_NET, "RPC[%p] -> %s (%d)--\n",                         \
 274                (rpc), libcfs_id2str((rpc)->crpc_dest),                  \
 275                atomic_read(&(rpc)->crpc_refcount));                     \
 276         LASSERT(atomic_read(&(rpc)->crpc_refcount) > 0);                \
 277         if (atomic_dec_and_test(&(rpc)->crpc_refcount))                 \
 278                 srpc_destroy_client_rpc(rpc);                           \
 279 } while (0)
 280
 281 #define srpc_event_pending(rpc)   ((rpc)->crpc_bulkev.ev_fired == 0 ||  \
 282                                    (rpc)->crpc_reqstev.ev_fired == 0 || \
 283                                    (rpc)->crpc_replyev.ev_fired == 0)
 284
 285 typedef struct srpc_service {
 286         int                sv_id;            /* service id */
 287         const char        *sv_name;          /* human readable name */
 288         int                sv_nprune;        /* # posted RPC to be pruned */
 289         int                sv_concur;        /* max # concurrent RPCs */
 290
 291         spinlock_t         sv_lock;
 292         int                sv_shuttingdown;
 293         srpc_event_t       sv_ev;            /* LNet event */
 294         int                sv_nposted_msg;   /* # posted message buffers */
 295         struct list_head   sv_free_rpcq;     /* free RPC descriptors */
 296         struct list_head   sv_active_rpcq;   /* in-flight RPCs */
 297         struct list_head   sv_posted_msgq;   /* posted message buffers */
 298         struct list_head   sv_blocked_msgq;  /* blocked for RPC descriptor */
 299
 300         /* Service callbacks:
 301          * - sv_handler: process incoming RPC request
 302          * - sv_bulk_ready: notify bulk data
 303          */
 304         int                (*sv_handler) (srpc_server_rpc_t *);
 305         int                (*sv_bulk_ready) (srpc_server_rpc_t *, int);
 306 } srpc_service_t;
 307
 308 #define SFW_POST_BUFFERS         8
 309 #define SFW_SERVICE_CONCURRENCY  (SFW_POST_BUFFERS/2)
 310
 311 typedef struct {
 312         struct list_head  sn_list;    /* chain on fw_zombie_sessions */
 313         lst_sid_t         sn_id;      /* unique identifier */
 314         unsigned int      sn_timeout; /* # seconds' inactivity to expire */
 315         int               sn_timer_active;
 316         stt_timer_t       sn_timer;
 317         struct list_head  sn_batches; /* list of batches */
 318         char              sn_name[LST_NAME_SIZE];
 319         atomic_t          sn_brw_errors;
 320         atomic_t          sn_ping_errors;
 321 } sfw_session_t;
 322
 323 #define sfw_sid_equal(sid0, sid1)     ((sid0).ses_nid == (sid1).ses_nid && \
 324                                        (sid0).ses_stamp == (sid1).ses_stamp)
 325
 326 typedef struct {
 327         struct list_head  bat_list;      /* chain on sn_batches */
 328         lst_bid_t         bat_id;        /* batch id */
 329         int               bat_error;     /* error code of batch */
 330         sfw_session_t    *bat_session;   /* batch's session */
 331         atomic_t          bat_nactive;   /* # of active tests */
 332         struct list_head  bat_tests;     /* test instances */
 333 } sfw_batch_t;
 334
 335 typedef struct {
 336         int  (*tso_init)(struct sfw_test_instance *tsi); /* intialize test client */
 337         void (*tso_fini)(struct sfw_test_instance *tsi); /* finalize test client */
 338         int  (*tso_prep_rpc)(struct sfw_test_unit *tsu,
 339                              lnet_process_id_t dest,
 340                              srpc_client_rpc_t **rpc);   /* prep a tests rpc */
 341         void (*tso_done_rpc)(struct sfw_test_unit *tsu,
 342                              srpc_client_rpc_t *rpc);    /* done a test rpc */
 343 } sfw_test_client_ops_t;
 344
 345 typedef struct sfw_test_instance {
 346         struct list_head        tsi_list;         /* chain on batch */
 347         int                     tsi_service;      /* test type */
 348         sfw_batch_t            *tsi_batch;        /* batch */
 349         sfw_test_client_ops_t  *tsi_ops;          /* test client operations */
 350
 351         /* public parameter for all test units */
 352         int                     tsi_is_client:1;     /* is test client */
 353         int                     tsi_stoptsu_onerr:1; /* stop tsu on error */
 354         int                     tsi_concur;          /* concurrency */
 355         int                     tsi_loop;            /* loop count */
 356
 357         /* status of test instance */
 358         spinlock_t              tsi_lock;         /* serialize */
 359         int                     tsi_stopping:1;   /* test is stopping */
 360         atomic_t                tsi_nactive;      /* # of active test unit */
 361         struct list_head        tsi_units;        /* test units */
 362         struct list_head        tsi_free_rpcs;    /* free rpcs */
 363         struct list_head        tsi_active_rpcs;  /* active rpcs */
 364
 365         union {
 366                 test_bulk_req_t bulk;             /* bulk parameter */
 367                 test_ping_req_t ping;             /* ping parameter */
 368         } tsi_u;
 369 } sfw_test_instance_t;
 370
 371 /* XXX: trailing (CFS_PAGE_SIZE % sizeof(lnet_process_id_t)) bytes at
 372  * the end of pages are not used */
 373 #define SFW_MAX_CONCUR     LST_MAX_CONCUR
 374 #define SFW_ID_PER_PAGE    (CFS_PAGE_SIZE / sizeof(lnet_process_id_t))
 375 #define SFW_MAX_NDESTS     (LNET_MAX_IOV * SFW_ID_PER_PAGE)
 376 #define sfw_id_pages(n)    (((n) + SFW_ID_PER_PAGE - 1) / SFW_ID_PER_PAGE)
 377
 378 typedef struct sfw_test_unit {
 379         struct list_head        tsu_list;         /* chain on lst_test_instance */
 380         lnet_process_id_t       tsu_dest;         /* id of dest node */
 381         int                     tsu_loop;         /* loop count of the test */
 382         sfw_test_instance_t    *tsu_instance;     /* pointer to test instance */
 383         void                   *tsu_private;      /* private data */
 384         swi_workitem_t          tsu_worker;       /* workitem of the test unit */
 385 } sfw_test_unit_t;
 386
 387 typedef struct {
 388         struct list_head        tsc_list;         /* chain on fw_tests */
 389         srpc_service_t         *tsc_srv_service;  /* test service */
 390         sfw_test_client_ops_t  *tsc_cli_ops;      /* ops of test client */
 391 } sfw_test_case_t;
 392
 393
 394 srpc_client_rpc_t *
 395 sfw_create_rpc(lnet_process_id_t peer, int service, int nbulkiov, int bulklen,
 396                void (*done) (srpc_client_rpc_t *), void *priv);
 397 int sfw_create_test_rpc(sfw_test_unit_t *tsu, lnet_process_id_t peer,
 398                         int nblk, int blklen, srpc_client_rpc_t **rpc);
 399 void sfw_abort_rpc(srpc_client_rpc_t *rpc);
 400 void sfw_post_rpc(srpc_client_rpc_t *rpc);
 401 void sfw_client_rpc_done(srpc_client_rpc_t *rpc);
 402 void sfw_unpack_message(srpc_msg_t *msg);
 403 void sfw_free_pages(srpc_server_rpc_t *rpc);
 404 void sfw_add_bulk_page(srpc_bulk_t *bk, cfs_page_t *pg, int i);
 405 int sfw_alloc_pages(srpc_server_rpc_t *rpc, int npages, int sink);
 406
 407 srpc_client_rpc_t *
 408 srpc_create_client_rpc(lnet_process_id_t peer, int service,
 409                        int nbulkiov, int bulklen,
 410                        void (*rpc_done)(srpc_client_rpc_t *),
 411                        void (*rpc_fini)(srpc_client_rpc_t *), void *priv);
 412 void srpc_post_rpc(srpc_client_rpc_t *rpc);
 413 void srpc_abort_rpc(srpc_client_rpc_t *rpc, int why);
 414 void srpc_free_bulk(srpc_bulk_t *bk);
 415 srpc_bulk_t *srpc_alloc_bulk(int npages, int sink);
 416 int srpc_send_rpc(swi_workitem_t *wi);
 417 int srpc_send_reply(srpc_server_rpc_t *rpc);
 418 int srpc_add_service(srpc_service_t *sv);
 419 int srpc_remove_service(srpc_service_t *sv);
 420 void srpc_shutdown_service(srpc_service_t *sv);
 421 int srpc_finish_service(srpc_service_t *sv);
 422 int srpc_service_add_buffers(srpc_service_t *sv, int nbuffer);
 423 void srpc_service_remove_buffers(srpc_service_t *sv, int nbuffer);
 424 void srpc_get_counters(srpc_counters_t *cnt);
 425 void srpc_set_counters(const srpc_counters_t *cnt);
 426
 427 void swi_kill_workitem(swi_workitem_t *wi);
 428 void swi_schedule_workitem(swi_workitem_t *wi);
 429 void swi_schedule_serial_workitem(swi_workitem_t *wi);
 430 int swi_startup(void);
 431 int sfw_startup(void);
 432 int srpc_startup(void);
 433 void swi_shutdown(void);
 434 void sfw_shutdown(void);
 435 void srpc_shutdown(void);
 436
 437 static inline void
 438 srpc_destroy_client_rpc (srpc_client_rpc_t *rpc)
 439 {
 440         LASSERT (rpc != NULL);
 441         LASSERT (!srpc_event_pending(rpc));
 442         LASSERT (list_empty(&rpc->crpc_privl));
 443         LASSERT (atomic_read(&rpc->crpc_refcount) == 0);
 444 #ifndef __KERNEL__
 445         LASSERT (rpc->crpc_bulk.bk_pages == NULL);
 446 #endif
 447
 448         if (rpc->crpc_fini == NULL) {
 449                 LIBCFS_FREE(rpc, srpc_client_rpc_size(rpc));
 450         } else {
 451                 (*rpc->crpc_fini) (rpc);
 452         }
 453
 454         return;
 455 }
 456
 457 static inline void
 458 srpc_init_client_rpc (srpc_client_rpc_t *rpc, lnet_process_id_t peer,
 459                       int service, int nbulkiov, int bulklen,
 460                       void (*rpc_done)(srpc_client_rpc_t *),
 461                       void (*rpc_fini)(srpc_client_rpc_t *), void *priv)
 462 {
 463         LASSERT (nbulkiov <= LNET_MAX_IOV);
 464
 465         memset(rpc, 0, offsetof(srpc_client_rpc_t,
 466                                 crpc_bulk.bk_iovs[nbulkiov]));
 467
 468         CFS_INIT_LIST_HEAD(&rpc->crpc_list);
 469         CFS_INIT_LIST_HEAD(&rpc->crpc_privl);
 470         swi_init_workitem(&rpc->crpc_wi, rpc, srpc_send_rpc);
 471         spin_lock_init(&rpc->crpc_lock);
 472         atomic_set(&rpc->crpc_refcount, 1); /* 1 ref for caller */
 473
 474         rpc->crpc_dest         = peer;
 475         rpc->crpc_priv         = priv;
 476         rpc->crpc_service      = service;
 477         rpc->crpc_bulk.bk_len  = bulklen;
 478         rpc->crpc_bulk.bk_niov = nbulkiov;
 479         rpc->crpc_done         = rpc_done;
 480         rpc->crpc_fini         = rpc_fini;
 481         rpc->crpc_reqstmdh     =
 482         rpc->crpc_replymdh     =
 483         rpc->crpc_bulk.bk_mdh  = LNET_INVALID_HANDLE;
 484
 485         /* no event is expected at this point */
 486         rpc->crpc_bulkev.ev_fired  =
 487         rpc->crpc_reqstev.ev_fired =
 488         rpc->crpc_replyev.ev_fired = 1;
 489
 490         rpc->crpc_reqstmsg.msg_magic   = SRPC_MSG_MAGIC;
 491         rpc->crpc_reqstmsg.msg_version = SRPC_MSG_VERSION;
 492         rpc->crpc_reqstmsg.msg_type    = srpc_service2request(service);
 493         return;
 494 }
 495
 496 static inline const char *
 497 swi_state2str (int state)
 498 {
 499 #define STATE2STR(x) case x: return #x
 500         switch(state) {
 501                 default:
 502                         LBUG();
 503                 STATE2STR(SWI_STATE_NEWBORN);
 504                 STATE2STR(SWI_STATE_REPLY_SUBMITTED);
 505                 STATE2STR(SWI_STATE_REPLY_SENT);
 506                 STATE2STR(SWI_STATE_REQUEST_SUBMITTED);
 507                 STATE2STR(SWI_STATE_REQUEST_SENT);
 508                 STATE2STR(SWI_STATE_REPLY_RECEIVED);
 509                 STATE2STR(SWI_STATE_BULK_STARTED);
 510                 STATE2STR(SWI_STATE_DONE);
 511         }
 512 #undef STATE2STR
 513 }
 514
 515 #define UNUSED(x)       ( (void)(x) )
 516
 517 #ifndef __KERNEL__
 518
 519 int stt_poll_interval(void);
 520 int sfw_session_removed(void);
 521
 522 int stt_check_events(void);
 523 int swi_check_events(void);
 524 int srpc_check_event(int timeout);
 525
 526 int lnet_selftest_init(void);
 527 void lnet_selftest_fini(void);
 528 int selftest_wait_events(void);
 529
 530 #else
 531
 532 #define selftest_wait_events()    cfs_pause(cfs_time_seconds(1))
 533
 534 #endif
 535
 536 #define lst_wait_until(cond, lock, fmt, a...)                           \
 537 do {                                                                    \
 538         int __I = 2;                                                    \
 539         while (!(cond)) {                                               \
 540                 __I++;                                                  \
 541                 CDEBUG(((__I & (-__I)) == __I) ? D_WARNING :            \
 542                                                  D_NET,     /* 2**n? */ \
 543                        fmt, ## a);                                      \
 544                 spin_unlock(&(lock));                                   \
 545                                                                         \
 546                 selftest_wait_events();                                 \
 547                                                                         \
 548                 spin_lock(&(lock));                                     \
 549         }                                                               \
 550 } while (0)
 551
 552 static inline void
 553 srpc_wait_service_shutdown (srpc_service_t *sv)
 554 {
 555         int i = 2;
 556
 557         spin_lock(&sv->sv_lock);
 558         LASSERT (sv->sv_shuttingdown);
 559         spin_unlock(&sv->sv_lock);
 560
 561         while (srpc_finish_service(sv) == 0) {
 562                 i++;
 563                 CDEBUG (((i & -i) == i) ? D_WARNING : D_NET,
 564                         "Waiting for %s service to shutdown...\n",
 565                         sv->sv_name);
 566                 selftest_wait_events();
 567         }
 568 }
 569
 570 #endif /* __SELFTEST_SELFTEST_H__ */