lustre/include/obd_class.h

   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) 2011, 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 #ifndef __CLASS_OBD_H
  37 #define __CLASS_OBD_H
  38
  39 #ifndef __KERNEL__
  40 # include <liblustre.h>
  41 #endif
  42
  43 #include <obd_support.h>
  44 #include <lustre_import.h>
  45 #include <lustre_net.h>
  46 #include <obd.h>
  47 #include <lustre_lib.h>
  48 #include <lustre/lustre_idl.h>
  49 #include <lprocfs_status.h>
  50
  51 #if defined(__linux__)
  52 #include <linux/obd_class.h>
  53 #elif defined(__APPLE__)
  54 #include <darwin/obd_class.h>
  55 #elif defined(__WINNT__)
  56 #include <winnt/obd_class.h>
  57 #else
  58 #error Unsupported operating system.
  59 #endif
  60
  61 #define OBD_STATFS_NODELAY      0x0001  /* requests should be send without delay
  62                                          * and resends for avoid deadlocks */
  63 #define OBD_STATFS_FROM_CACHE   0x0002  /* the statfs callback should not update
  64                                          * obd_osfs_age */
  65 #define OBD_STATFS_PTLRPCD      0x0004  /* requests will be sent via ptlrpcd
  66                                          * instead of a specific set. This
  67                                          * means that we cannot rely on the set
  68                                          * interpret routine to be called.
  69                                          * lov_statfs_fini() must thus be called
  70                                          * by the request interpret routine */
  71
  72 #define OBD_FL_PUNCH    0x00000001      /* To indicate it is punch operation */
  73
  74 /* OBD Device Declarations */
  75 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  76 extern rwlock_t obd_dev_lock;
  77
  78 /* OBD Operations Declarations */
  79 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  80 extern struct obd_device *class_exp2obd(struct obd_export *);
  81 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
  82 extern int lustre_get_jobid(char *jobid);
  83
  84 struct lu_device_type;
  85
  86 /* genops.c */
  87 struct obd_export *class_conn2export(struct lustre_handle *);
  88 int class_register_type(struct obd_ops *, struct md_ops *,
  89                         struct lprocfs_vars *, const char *nm,
  90                         struct lu_device_type *ldt);
  91 int class_unregister_type(const char *nm);
  92
  93 struct obd_device *class_newdev(const char *type_name, const char *name);
  94 void class_release_dev(struct obd_device *obd);
  95
  96 int class_name2dev(const char *name);
  97 struct obd_device *class_name2obd(const char *name);
  98 int class_uuid2dev(struct obd_uuid *uuid);
  99 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
 100 void class_obd_list(void);
 101 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
 102                                           const char * typ_name,
 103                                           struct obd_uuid *grp_uuid);
 104 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
 105                                            int *next);
 106 struct obd_device * class_num2obd(int num);
 107 int get_devices_count(void);
 108
 109 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
 110
 111 char *obd_export_nid2str(struct obd_export *exp);
 112
 113 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 114 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 115 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
 116
 117 int obd_zombie_impexp_init(void);
 118 void obd_zombie_impexp_stop(void);
 119 void obd_zombie_impexp_cull(void);
 120 void obd_zombie_barrier(void);
 121 void obd_exports_barrier(struct obd_device *obd);
 122 int kuc_len(int payload_len);
 123 struct kuc_hdr * kuc_ptr(void *p);
 124 int kuc_ispayload(void *p);
 125 void *kuc_alloc(int payload_len, int transport, int type);
 126 void kuc_free(void *p, int payload_len);
 127
 128 struct llog_handle;
 129 struct llog_rec_hdr;
 130 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
 131                          struct llog_rec_hdr *, void *);
 132 /* obd_config.c */
 133 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
 134                                      const char *new_name);
 135 int class_process_config(struct lustre_cfg *lcfg);
 136 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 137                              struct lustre_cfg *lcfg, void *data);
 138 int class_attach(struct lustre_cfg *lcfg);
 139 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 140 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 141 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 142 struct obd_device *class_incref(struct obd_device *obd,
 143                                 const char *scope, const void *source);
 144 void class_decref(struct obd_device *obd,
 145                   const char *scope, const void *source);
 146 void dump_exports(struct obd_device *obd, int locks);
 147 int class_config_llog_handler(const struct lu_env *env,
 148                               struct llog_handle *handle,
 149                               struct llog_rec_hdr *rec, void *data);
 150 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
 151 int class_add_uuid(const char *uuid, __u64 nid);
 152
 153 /*obdecho*/
 154 #ifdef LPROCFS
 155 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 156 #else
 157 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 158 {
 159         memset(lvars, 0, sizeof(*lvars));
 160 }
 161 #endif
 162
 163 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 164 #define CFG_F_MARKER    0x02   /* We are within a maker */
 165 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 166 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 167 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 168
 169 /* Passed as data param to class_config_parse_llog */
 170 struct config_llog_instance {
 171         char               *cfg_obdname;
 172         void               *cfg_instance;
 173         struct super_block *cfg_sb;
 174         struct obd_uuid     cfg_uuid;
 175         llog_cb_t           cfg_callback;
 176         int                 cfg_last_idx; /* for partial llog processing */
 177         int                 cfg_flags;
 178 };
 179 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 180                             char *name, struct config_llog_instance *cfg);
 181 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 182                            char *name, struct config_llog_instance *cfg);
 183
 184 enum {
 185         CONFIG_T_CONFIG  = 0,
 186         CONFIG_T_SPTLRPC = 1,
 187         CONFIG_T_RECOVER = 2,
 188         CONFIG_T_MAX     = 3
 189 };
 190
 191 /* list of active configuration logs  */
 192 struct config_llog_data {
 193         struct ldlm_res_id          cld_resid;
 194         struct config_llog_instance cld_cfg;
 195         cfs_list_t                  cld_list_chain;
 196         cfs_atomic_t                cld_refcount;
 197         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 198         struct config_llog_data    *cld_recover;    /* imperative recover log */
 199         struct obd_export          *cld_mgcexp;
 200         struct mutex                cld_lock;
 201         int                         cld_type;
 202         unsigned int                cld_stopping:1, /* we were told to stop
 203                                                      * watching */
 204                                     cld_lostlock:1; /* lock not requeued */
 205         char                        cld_logname[0];
 206 };
 207
 208 struct lustre_profile {
 209         cfs_list_t       lp_list;
 210         char            *lp_profile;
 211         char            *lp_dt;
 212         char            *lp_md;
 213 };
 214
 215 struct lustre_profile *class_get_profile(const char * prof);
 216 void class_del_profile(const char *prof);
 217 void class_del_profiles(void);
 218
 219 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 220
 221 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 222 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 223 extern void (*class_export_dump_hook)(struct obd_export *);
 224
 225 #else
 226
 227 #define __class_export_add_lock_ref(exp, lock)             do {} while(0)
 228 #define __class_export_del_lock_ref(exp, lock)             do {} while(0)
 229
 230 #endif
 231
 232 #define class_export_rpc_get(exp)                                       \
 233 ({                                                                      \
 234         cfs_atomic_inc(&(exp)->exp_rpc_count);                          \
 235         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 236                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
 237         class_export_get(exp);                                          \
 238 })
 239
 240 #define class_export_rpc_put(exp)                                       \
 241 ({                                                                      \
 242         LASSERT_ATOMIC_POS(&exp->exp_rpc_count);                        \
 243         cfs_atomic_dec(&(exp)->exp_rpc_count);                          \
 244         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 245                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
 246         class_export_put(exp);                                          \
 247 })
 248
 249 #define class_export_lock_get(exp, lock)                                \
 250 ({                                                                      \
 251         cfs_atomic_inc(&(exp)->exp_locks_count);                        \
 252         __class_export_add_lock_ref(exp, lock);                         \
 253         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 254                (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
 255         class_export_get(exp);                                          \
 256 })
 257
 258 #define class_export_lock_put(exp, lock)                                \
 259 ({                                                                      \
 260         LASSERT_ATOMIC_POS(&exp->exp_locks_count);                      \
 261         cfs_atomic_dec(&(exp)->exp_locks_count);                        \
 262         __class_export_del_lock_ref(exp, lock);                         \
 263         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 264                (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
 265         class_export_put(exp);                                          \
 266 })
 267
 268 #define class_export_cb_get(exp)                                        \
 269 ({                                                                      \
 270         cfs_atomic_inc(&(exp)->exp_cb_count);                           \
 271         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 272                (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
 273         class_export_get(exp);                                          \
 274 })
 275
 276 #define class_export_cb_put(exp)                                        \
 277 ({                                                                      \
 278         LASSERT_ATOMIC_POS(&exp->exp_cb_count);                         \
 279         cfs_atomic_dec(&(exp)->exp_cb_count);                           \
 280         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 281                (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
 282         class_export_put(exp);                                          \
 283 })
 284
 285 /* genops.c */
 286 struct obd_export *class_export_get(struct obd_export *exp);
 287 void class_export_put(struct obd_export *exp);
 288 struct obd_export *class_new_export(struct obd_device *obddev,
 289                                     struct obd_uuid *cluuid);
 290 void class_unlink_export(struct obd_export *exp);
 291
 292 struct obd_import *class_import_get(struct obd_import *);
 293 void class_import_put(struct obd_import *);
 294 struct obd_import *class_new_import(struct obd_device *obd);
 295 void class_destroy_import(struct obd_import *exp);
 296
 297 struct obd_type *class_search_type(const char *name);
 298 struct obd_type *class_get_type(const char *name);
 299 void class_put_type(struct obd_type *type);
 300 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 301                   struct obd_uuid *cluuid);
 302 int class_disconnect(struct obd_export *exp);
 303 void class_fail_export(struct obd_export *exp);
 304 int class_connected_export(struct obd_export *exp);
 305 void class_disconnect_exports(struct obd_device *obddev);
 306 int class_manual_cleanup(struct obd_device *obd);
 307 void class_disconnect_stale_exports(struct obd_device *,
 308                                     int (*test_export)(struct obd_export *));
 309 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 310 {
 311         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 312                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 313                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 314                 0);
 315 }
 316
 317 #ifdef HAVE_SERVER_SUPPORT
 318 static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
 319 {
 320         LASSERT(exp->exp_obd);
 321         return exp->exp_obd->u.obt.obt_lut;
 322 }
 323
 324 static inline struct lr_server_data *class_server_data(struct obd_device *obd)
 325 {
 326         LASSERT(obd->u.obt.obt_lut);
 327         return &obd->u.obt.obt_lut->lut_lsd;
 328 }
 329 #endif
 330
 331 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 332 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 333 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 334                      unsigned int ia_valid);
 335 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 336 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 337 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 338                   unsigned int valid);
 339
 340 #define OBT(dev)        (dev)->obd_type
 341 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 342 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 343 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 344
 345 /* Ensure obd_setup: used for cleanup which must be called
 346    while obd is stopping */
 347 #define OBD_CHECK_DEV(obd)                                      \
 348 do {                                                            \
 349         if (!(obd)) {                                           \
 350                 CERROR("NULL device\n");                        \
 351                 RETURN(-ENODEV);                                \
 352         }                                                       \
 353 } while (0)
 354
 355 /* ensure obd_setup and !obd_stopping */
 356 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 357 do {                                                            \
 358         OBD_CHECK_DEV(obd);                                     \
 359         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 360                 CERROR("Device %d not setup\n",                 \
 361                        (obd)->obd_minor);                       \
 362                 RETURN(-ENODEV);                                \
 363         }                                                       \
 364 } while (0)
 365
 366
 367 #ifdef LPROCFS
 368 #define OBD_COUNTER_OFFSET(op)                                  \
 369         ((offsetof(struct obd_ops, o_ ## op) -                  \
 370           offsetof(struct obd_ops, o_iocontrol))                \
 371          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 372
 373 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 374         if ((obdx)->obd_stats != NULL) {                          \
 375                 unsigned int coffset;                             \
 376                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 377                         OBD_COUNTER_OFFSET(op);                   \
 378                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 379                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 380         }
 381
 382 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 383         if ((export)->exp_obd->obd_stats != NULL) {                          \
 384                 unsigned int coffset;                                        \
 385                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 386                         OBD_COUNTER_OFFSET(op);                              \
 387                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 388                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 389                 if ((export)->exp_nid_stats != NULL &&                       \
 390                     (export)->exp_nid_stats->nid_stats != NULL)              \
 391                         lprocfs_counter_incr(                                \
 392                                 (export)->exp_nid_stats->nid_stats, coffset);\
 393         }
 394
 395 #define MD_COUNTER_OFFSET(op)                                   \
 396         ((offsetof(struct md_ops, m_ ## op) -                   \
 397           offsetof(struct md_ops, m_getstatus))                 \
 398          / sizeof(((struct md_ops *)(0))->m_getstatus))
 399
 400 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 401         if ((obd)->md_stats != NULL) {                           \
 402                 unsigned int coffset;                            \
 403                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 404                         MD_COUNTER_OFFSET(op);                   \
 405                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 406                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 407         }
 408
 409 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 410         if ((export)->exp_obd->obd_stats != NULL) {                          \
 411                 unsigned int coffset;                                        \
 412                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 413                         MD_COUNTER_OFFSET(op);                               \
 414                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 415                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 416                 if ((export)->exp_md_stats != NULL)                          \
 417                         lprocfs_counter_incr(                                \
 418                                 (export)->exp_md_stats, coffset);            \
 419         }
 420
 421 #else
 422 #define OBD_COUNTER_OFFSET(op)
 423 #define OBD_COUNTER_INCREMENT(obd, op)
 424 #define EXP_COUNTER_INCREMENT(exp, op)
 425 #define MD_COUNTER_INCREMENT(obd, op)
 426 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 427 #endif
 428
 429 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
 430 {
 431         /* Always add in ldlm_stats */
 432         tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
 433                                                   ,LPROCFS_STATS_FLAG_NOPERCPU);
 434         if (tmp->nid_ldlm_stats == NULL)
 435                 return -ENOMEM;
 436
 437         lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
 438
 439         return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
 440                                       tmp->nid_ldlm_stats);
 441 }
 442
 443 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 444 do {                                                            \
 445         if (!OBT(obd) || !MDP((obd), op)) {                     \
 446                 if (err)                                        \
 447                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 448                                obd->obd_name, obd->obd_minor);  \
 449                 RETURN(err);                                    \
 450         }                                                       \
 451 } while (0)
 452
 453 #define EXP_CHECK_MD_OP(exp, op)                                \
 454 do {                                                            \
 455         if ((exp) == NULL) {                                    \
 456                 CERROR("obd_" #op ": NULL export\n");           \
 457                 RETURN(-ENODEV);                                \
 458         }                                                       \
 459         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 460                 CERROR("obd_" #op ": cleaned up obd\n");        \
 461                 RETURN(-EOPNOTSUPP);                            \
 462         }                                                       \
 463         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 464                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 465                        (exp)->exp_obd->obd_name,                \
 466                        (exp)->exp_obd->obd_minor);              \
 467                 RETURN(-EOPNOTSUPP);                            \
 468         }                                                       \
 469 } while (0)
 470
 471
 472 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 473 do {                                                            \
 474         if (!OBT(obd) || !OBP((obd), op)) {                     \
 475                 if (err)                                        \
 476                         CERROR("obd_" #op ": dev %d no operation\n",    \
 477                                obd->obd_minor);                 \
 478                 RETURN(err);                                    \
 479         }                                                       \
 480 } while (0)
 481
 482 #define EXP_CHECK_DT_OP(exp, op)                                \
 483 do {                                                            \
 484         if ((exp) == NULL) {                                    \
 485                 CERROR("obd_" #op ": NULL export\n");           \
 486                 RETURN(-ENODEV);                                \
 487         }                                                       \
 488         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 489                 CERROR("obd_" #op ": cleaned up obd\n");        \
 490                 RETURN(-EOPNOTSUPP);                            \
 491         }                                                       \
 492         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 493                 CERROR("obd_" #op ": dev %d no operation\n",    \
 494                        (exp)->exp_obd->obd_minor);              \
 495                 RETURN(-EOPNOTSUPP);                            \
 496         }                                                       \
 497 } while (0)
 498
 499 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 500 do {                                                                 \
 501         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 502                 if (err)                                             \
 503                         CERROR("lop_" #op ": dev %d no operation\n", \
 504                                ctxt->loc_obd->obd_minor);            \
 505                 RETURN(err);                                         \
 506         }                                                            \
 507 } while (0)
 508
 509 static inline int class_devno_max(void)
 510 {
 511         return MAX_OBD_DEVICES;
 512 }
 513
 514 static inline int obd_get_info(const struct lu_env *env,
 515                                struct obd_export *exp, __u32 keylen,
 516                                void *key, __u32 *vallen, void *val,
 517                                struct lov_stripe_md *lsm)
 518 {
 519         int rc;
 520         ENTRY;
 521
 522         EXP_CHECK_DT_OP(exp, get_info);
 523         EXP_COUNTER_INCREMENT(exp, get_info);
 524
 525         rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val,
 526                                          lsm);
 527         RETURN(rc);
 528 }
 529
 530 static inline int obd_set_info_async(const struct lu_env *env,
 531                                      struct obd_export *exp, obd_count keylen,
 532                                      void *key, obd_count vallen, void *val,
 533                                      struct ptlrpc_request_set *set)
 534 {
 535         int rc;
 536         ENTRY;
 537
 538         EXP_CHECK_DT_OP(exp, set_info_async);
 539         EXP_COUNTER_INCREMENT(exp, set_info_async);
 540
 541         rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
 542                                                val, set);
 543         RETURN(rc);
 544 }
 545
 546 /*
 547  * obd-lu integration.
 548  *
 549  * Functionality is being moved into new lu_device-based layering, but some
 550  * pieces of configuration process are still based on obd devices.
 551  *
 552  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 553  * subsume ->o_setup() methods of obd devices they replace. The same for
 554  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 555  * result, obd_setup() and obd_process_config() branch and call one XOR
 556  * another.
 557  *
 558  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 559  * lu_device_type_operations::ldto_device_free() fully implement the
 560  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 561  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 562  */
 563
 564 #define DECLARE_LU_VARS(ldt, d)                 \
 565         struct lu_device_type *ldt;       \
 566         struct lu_device *d
 567
 568 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 569 {
 570         int rc;
 571         DECLARE_LU_VARS(ldt, d);
 572         ENTRY;
 573
 574         ldt = obd->obd_type->typ_lu;
 575         if (ldt != NULL) {
 576                 struct lu_context  session_ctx;
 577                 struct lu_env env;
 578                 lu_context_init(&session_ctx, LCT_SESSION);
 579                 session_ctx.lc_thread = NULL;
 580                 lu_context_enter(&session_ctx);
 581
 582                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 583                 if (rc == 0) {
 584                         env.le_ses = &session_ctx;
 585                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 586                         lu_env_fini(&env);
 587                         if (!IS_ERR(d)) {
 588                                 obd->obd_lu_dev = d;
 589                                 d->ld_obd = obd;
 590                                 rc = 0;
 591                         } else
 592                                 rc = PTR_ERR(d);
 593                 }
 594                 lu_context_exit(&session_ctx);
 595                 lu_context_fini(&session_ctx);
 596
 597         } else {
 598                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 599                 OBD_COUNTER_INCREMENT(obd, setup);
 600                 rc = OBP(obd, setup)(obd, cfg);
 601         }
 602         RETURN(rc);
 603 }
 604
 605 static inline int obd_precleanup(struct obd_device *obd,
 606                                  enum obd_cleanup_stage cleanup_stage)
 607 {
 608         int rc;
 609         DECLARE_LU_VARS(ldt, d);
 610         ENTRY;
 611
 612         OBD_CHECK_DEV(obd);
 613         ldt = obd->obd_type->typ_lu;
 614         d = obd->obd_lu_dev;
 615         if (ldt != NULL && d != NULL) {
 616                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 617                         struct lu_env env;
 618
 619                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 620                         if (rc == 0) {
 621                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 622                                 lu_env_fini(&env);
 623                         }
 624                 }
 625         }
 626         OBD_CHECK_DT_OP(obd, precleanup, 0);
 627         OBD_COUNTER_INCREMENT(obd, precleanup);
 628
 629         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 630         RETURN(rc);
 631 }
 632
 633 static inline int obd_cleanup(struct obd_device *obd)
 634 {
 635         int rc;
 636         DECLARE_LU_VARS(ldt, d);
 637         ENTRY;
 638
 639         OBD_CHECK_DEV(obd);
 640
 641         ldt = obd->obd_type->typ_lu;
 642         d = obd->obd_lu_dev;
 643         if (ldt != NULL && d != NULL) {
 644                 struct lu_env env;
 645
 646                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 647                 if (rc == 0) {
 648                         ldt->ldt_ops->ldto_device_free(&env, d);
 649                         lu_env_fini(&env);
 650                         obd->obd_lu_dev = NULL;
 651                 }
 652         }
 653         OBD_CHECK_DT_OP(obd, cleanup, 0);
 654         OBD_COUNTER_INCREMENT(obd, cleanup);
 655
 656         rc = OBP(obd, cleanup)(obd);
 657         RETURN(rc);
 658 }
 659
 660 static inline void obd_cleanup_client_import(struct obd_device *obd)
 661 {
 662         ENTRY;
 663
 664         /* If we set up but never connected, the
 665            client import will not have been cleaned. */
 666         down_write(&obd->u.cli.cl_sem);
 667         if (obd->u.cli.cl_import) {
 668                 struct obd_import *imp;
 669                 imp = obd->u.cli.cl_import;
 670                 CDEBUG(D_CONFIG, "%s: client import never connected\n",
 671                        obd->obd_name);
 672                 ptlrpc_invalidate_import(imp);
 673                 if (imp->imp_rq_pool) {
 674                         ptlrpc_free_rq_pool(imp->imp_rq_pool);
 675                         imp->imp_rq_pool = NULL;
 676                 }
 677                 client_destroy_import(imp);
 678                 obd->u.cli.cl_import = NULL;
 679         }
 680         up_write(&obd->u.cli.cl_sem);
 681
 682         EXIT;
 683 }
 684
 685 static inline int
 686 obd_process_config(struct obd_device *obd, int datalen, void *data)
 687 {
 688         int rc;
 689         DECLARE_LU_VARS(ldt, d);
 690         ENTRY;
 691
 692         OBD_CHECK_DEV(obd);
 693
 694         obd->obd_process_conf = 1;
 695         ldt = obd->obd_type->typ_lu;
 696         d = obd->obd_lu_dev;
 697         if (ldt != NULL && d != NULL) {
 698                 struct lu_env env;
 699
 700                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 701                 if (rc == 0) {
 702                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 703                         lu_env_fini(&env);
 704                 }
 705         } else {
 706                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 707                 rc = OBP(obd, process_config)(obd, datalen, data);
 708         }
 709         OBD_COUNTER_INCREMENT(obd, process_config);
 710         obd->obd_process_conf = 0;
 711
 712         RETURN(rc);
 713 }
 714
 715 /* Pack an in-memory MD struct for storage on disk.
 716  * Returns +ve size of packed MD (0 for free), or -ve error.
 717  *
 718  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 719  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 720  * If @*disk_tgt == NULL, it will be allocated
 721  */
 722 static inline int obd_packmd(struct obd_export *exp,
 723                              struct lov_mds_md **disk_tgt,
 724                              struct lov_stripe_md *mem_src)
 725 {
 726         int rc;
 727         ENTRY;
 728
 729         EXP_CHECK_DT_OP(exp, packmd);
 730         EXP_COUNTER_INCREMENT(exp, packmd);
 731
 732         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 733         RETURN(rc);
 734 }
 735
 736 static inline int obd_size_diskmd(struct obd_export *exp,
 737                                   struct lov_stripe_md *mem_src)
 738 {
 739         return obd_packmd(exp, NULL, mem_src);
 740 }
 741
 742 /* helper functions */
 743 static inline int obd_alloc_diskmd(struct obd_export *exp,
 744                                    struct lov_mds_md **disk_tgt)
 745 {
 746         LASSERT(disk_tgt);
 747         LASSERT(*disk_tgt == NULL);
 748         return obd_packmd(exp, disk_tgt, NULL);
 749 }
 750
 751 static inline int obd_free_diskmd(struct obd_export *exp,
 752                                   struct lov_mds_md **disk_tgt)
 753 {
 754         LASSERT(disk_tgt);
 755         LASSERT(*disk_tgt);
 756         return obd_packmd(exp, disk_tgt, NULL);
 757 }
 758
 759 /* Unpack an MD struct from disk to in-memory format.
 760  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 761  *
 762  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 763  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 764  * If @*mem_tgt == NULL, it will be allocated
 765  */
 766 static inline int obd_unpackmd(struct obd_export *exp,
 767                                struct lov_stripe_md **mem_tgt,
 768                                struct lov_mds_md *disk_src,
 769                                int disk_len)
 770 {
 771         int rc;
 772         ENTRY;
 773
 774         EXP_CHECK_DT_OP(exp, unpackmd);
 775         EXP_COUNTER_INCREMENT(exp, unpackmd);
 776
 777         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 778         RETURN(rc);
 779 }
 780
 781 /* helper functions */
 782 static inline int obd_alloc_memmd(struct obd_export *exp,
 783                                   struct lov_stripe_md **mem_tgt)
 784 {
 785         LASSERT(mem_tgt);
 786         LASSERT(*mem_tgt == NULL);
 787         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 788 }
 789
 790 static inline int obd_free_memmd(struct obd_export *exp,
 791                                  struct lov_stripe_md **mem_tgt)
 792 {
 793         int rc;
 794
 795         LASSERT(mem_tgt);
 796         LASSERT(*mem_tgt);
 797         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 798         *mem_tgt = NULL;
 799         return rc;
 800 }
 801
 802 static inline int obd_precreate(struct obd_export *exp)
 803 {
 804         int rc;
 805         ENTRY;
 806
 807         EXP_CHECK_DT_OP(exp, precreate);
 808         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 809
 810         rc = OBP(exp->exp_obd, precreate)(exp);
 811         RETURN(rc);
 812 }
 813
 814 static inline int obd_create_async(struct obd_export *exp,
 815                                    struct obd_info *oinfo,
 816                                    struct lov_stripe_md **ea,
 817                                    struct obd_trans_info *oti)
 818 {
 819         int rc;
 820         ENTRY;
 821
 822         EXP_CHECK_DT_OP(exp, create_async);
 823         EXP_COUNTER_INCREMENT(exp, create_async);
 824
 825         rc = OBP(exp->exp_obd, create_async)(exp, oinfo, ea, oti);
 826         RETURN(rc);
 827 }
 828
 829 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
 830                              struct obdo *obdo, struct lov_stripe_md **ea,
 831                              struct obd_trans_info *oti)
 832 {
 833         int rc;
 834         ENTRY;
 835
 836         EXP_CHECK_DT_OP(exp, create);
 837         EXP_COUNTER_INCREMENT(exp, create);
 838
 839         rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
 840         RETURN(rc);
 841 }
 842
 843 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
 844                               struct obdo *obdo, struct lov_stripe_md *ea,
 845                               struct obd_trans_info *oti,
 846                               struct obd_export *md_exp, void *capa)
 847 {
 848         int rc;
 849         ENTRY;
 850
 851         EXP_CHECK_DT_OP(exp, destroy);
 852         EXP_COUNTER_INCREMENT(exp, destroy);
 853
 854         rc = OBP(exp->exp_obd, destroy)(env, exp, obdo, ea, oti, md_exp, capa);
 855         RETURN(rc);
 856 }
 857
 858 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
 859                               struct obd_info *oinfo)
 860 {
 861         int rc;
 862         ENTRY;
 863
 864         EXP_CHECK_DT_OP(exp, getattr);
 865         EXP_COUNTER_INCREMENT(exp, getattr);
 866
 867         rc = OBP(exp->exp_obd, getattr)(env, exp, oinfo);
 868         RETURN(rc);
 869 }
 870
 871 static inline int obd_getattr_async(struct obd_export *exp,
 872                                     struct obd_info *oinfo,
 873                                     struct ptlrpc_request_set *set)
 874 {
 875         int rc;
 876         ENTRY;
 877
 878         EXP_CHECK_DT_OP(exp, getattr_async);
 879         EXP_COUNTER_INCREMENT(exp, getattr_async);
 880
 881         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 882         RETURN(rc);
 883 }
 884
 885 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
 886                               struct obd_info *oinfo,
 887                               struct obd_trans_info *oti)
 888 {
 889         int rc;
 890         ENTRY;
 891
 892         EXP_CHECK_DT_OP(exp, setattr);
 893         EXP_COUNTER_INCREMENT(exp, setattr);
 894
 895         rc = OBP(exp->exp_obd, setattr)(env, exp, oinfo, oti);
 896         RETURN(rc);
 897 }
 898
 899 /* This performs all the requests set init/wait/destroy actions. */
 900 static inline int obd_setattr_rqset(struct obd_export *exp,
 901                                     struct obd_info *oinfo,
 902                                     struct obd_trans_info *oti)
 903 {
 904         struct ptlrpc_request_set *set = NULL;
 905         int rc;
 906         ENTRY;
 907
 908         EXP_CHECK_DT_OP(exp, setattr_async);
 909         EXP_COUNTER_INCREMENT(exp, setattr_async);
 910
 911         set =  ptlrpc_prep_set();
 912         if (set == NULL)
 913                 RETURN(-ENOMEM);
 914
 915         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 916         if (rc == 0)
 917                 rc = ptlrpc_set_wait(set);
 918         ptlrpc_set_destroy(set);
 919         RETURN(rc);
 920 }
 921
 922 /* This adds all the requests into @set if @set != NULL, otherwise
 923    all requests are sent asynchronously without waiting for response. */
 924 static inline int obd_setattr_async(struct obd_export *exp,
 925                                     struct obd_info *oinfo,
 926                                     struct obd_trans_info *oti,
 927                                     struct ptlrpc_request_set *set)
 928 {
 929         int rc;
 930         ENTRY;
 931
 932         EXP_CHECK_DT_OP(exp, setattr_async);
 933         EXP_COUNTER_INCREMENT(exp, setattr_async);
 934
 935         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 936         RETURN(rc);
 937 }
 938
 939 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 940                                int priority)
 941 {
 942         struct obd_device *obd = imp->imp_obd;
 943         int rc;
 944         ENTRY;
 945
 946         OBD_CHECK_DEV_ACTIVE(obd);
 947         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 948         OBD_COUNTER_INCREMENT(obd, add_conn);
 949
 950         rc = OBP(obd, add_conn)(imp, uuid, priority);
 951         RETURN(rc);
 952 }
 953
 954 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 955 {
 956         struct obd_device *obd = imp->imp_obd;
 957         int rc;
 958         ENTRY;
 959
 960         OBD_CHECK_DEV_ACTIVE(obd);
 961         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 962         OBD_COUNTER_INCREMENT(obd, del_conn);
 963
 964         rc = OBP(obd, del_conn)(imp, uuid);
 965         RETURN(rc);
 966 }
 967
 968 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 969 {
 970         struct obd_uuid *uuid;
 971         ENTRY;
 972
 973         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 974         EXP_COUNTER_INCREMENT(exp, get_uuid);
 975
 976         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 977         RETURN(uuid);
 978 }
 979
 980 /** Create a new /a exp on device /a obd for the uuid /a cluuid
 981  * @param exp New export handle
 982  * @param d Connect data, supported flags are set, flags also understood
 983  *    by obd are returned.
 984  */
 985 static inline int obd_connect(const struct lu_env *env,
 986                               struct obd_export **exp,struct obd_device *obd,
 987                               struct obd_uuid *cluuid,
 988                               struct obd_connect_data *data,
 989                               void *localdata)
 990 {
 991         int rc;
 992         __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
 993                                                    * check */
 994         ENTRY;
 995
 996         OBD_CHECK_DEV_ACTIVE(obd);
 997         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 998         OBD_COUNTER_INCREMENT(obd, connect);
 999
1000         rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
1001         /* check that only subset is granted */
1002         LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
1003                                     data->ocd_connect_flags));
1004         RETURN(rc);
1005 }
1006
1007 static inline int obd_reconnect(const struct lu_env *env,
1008                                 struct obd_export *exp,
1009                                 struct obd_device *obd,
1010                                 struct obd_uuid *cluuid,
1011                                 struct obd_connect_data *d,
1012                                 void *localdata)
1013 {
1014         int rc;
1015         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
1016                                                    * check */
1017
1018         ENTRY;
1019
1020         OBD_CHECK_DEV_ACTIVE(obd);
1021         OBD_CHECK_DT_OP(obd, reconnect, 0);
1022         OBD_COUNTER_INCREMENT(obd, reconnect);
1023
1024         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
1025         /* check that only subset is granted */
1026         LASSERT(ergo(d != NULL,
1027                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
1028         RETURN(rc);
1029 }
1030
1031 static inline int obd_disconnect(struct obd_export *exp)
1032 {
1033         int rc;
1034         ENTRY;
1035
1036         EXP_CHECK_DT_OP(exp, disconnect);
1037         EXP_COUNTER_INCREMENT(exp, disconnect);
1038
1039         rc = OBP(exp->exp_obd, disconnect)(exp);
1040         RETURN(rc);
1041 }
1042
1043 static inline int obd_fid_init(struct obd_export *exp, enum lu_cli_type type)
1044 {
1045         int rc;
1046         ENTRY;
1047
1048         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
1049         EXP_COUNTER_INCREMENT(exp, fid_init);
1050
1051         rc = OBP(exp->exp_obd, fid_init)(exp, type);
1052         RETURN(rc);
1053 }
1054
1055 static inline int obd_fid_fini(struct obd_export *exp)
1056 {
1057         int rc;
1058         ENTRY;
1059
1060         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
1061         EXP_COUNTER_INCREMENT(exp, fid_fini);
1062
1063         rc = OBP(exp->exp_obd, fid_fini)(exp);
1064         RETURN(rc);
1065 }
1066
1067 static inline int obd_fid_alloc(struct obd_export *exp,
1068                                 struct lu_fid *fid,
1069                                 struct md_op_data *op_data)
1070 {
1071         int rc;
1072         ENTRY;
1073
1074         EXP_CHECK_DT_OP(exp, fid_alloc);
1075         EXP_COUNTER_INCREMENT(exp, fid_alloc);
1076
1077         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
1078         RETURN(rc);
1079 }
1080
1081 static inline int obd_ping(const struct lu_env *env, struct obd_export *exp)
1082 {
1083         int rc;
1084         ENTRY;
1085
1086         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
1087         EXP_COUNTER_INCREMENT(exp, ping);
1088
1089         rc = OBP(exp->exp_obd, ping)(env, exp);
1090         RETURN(rc);
1091 }
1092
1093 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
1094 {
1095         int rc;
1096         ENTRY;
1097
1098         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1099         OBD_COUNTER_INCREMENT(obd, pool_new);
1100
1101         rc = OBP(obd, pool_new)(obd, poolname);
1102         RETURN(rc);
1103 }
1104
1105 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1106 {
1107         int rc;
1108         ENTRY;
1109
1110         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1111         OBD_COUNTER_INCREMENT(obd, pool_del);
1112
1113         rc = OBP(obd, pool_del)(obd, poolname);
1114         RETURN(rc);
1115 }
1116
1117 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1118 {
1119         int rc;
1120         ENTRY;
1121
1122         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1123         OBD_COUNTER_INCREMENT(obd, pool_add);
1124
1125         rc = OBP(obd, pool_add)(obd, poolname, ostname);
1126         RETURN(rc);
1127 }
1128
1129 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1130 {
1131         int rc;
1132         ENTRY;
1133
1134         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1135         OBD_COUNTER_INCREMENT(obd, pool_rem);
1136
1137         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1138         RETURN(rc);
1139 }
1140
1141 static inline void obd_getref(struct obd_device *obd)
1142 {
1143         ENTRY;
1144         if (OBT(obd) && OBP(obd, getref)) {
1145                 OBD_COUNTER_INCREMENT(obd, getref);
1146                 OBP(obd, getref)(obd);
1147         }
1148         EXIT;
1149 }
1150
1151 static inline void obd_putref(struct obd_device *obd)
1152 {
1153         ENTRY;
1154         if (OBT(obd) && OBP(obd, putref)) {
1155                 OBD_COUNTER_INCREMENT(obd, putref);
1156                 OBP(obd, putref)(obd);
1157         }
1158         EXIT;
1159 }
1160
1161 static inline int obd_init_export(struct obd_export *exp)
1162 {
1163         int rc = 0;
1164
1165         ENTRY;
1166         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1167             OBP((exp)->exp_obd, init_export))
1168                 rc = OBP(exp->exp_obd, init_export)(exp);
1169         RETURN(rc);
1170 }
1171
1172 static inline int obd_destroy_export(struct obd_export *exp)
1173 {
1174         ENTRY;
1175         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1176             OBP((exp)->exp_obd, destroy_export))
1177                 OBP(exp->exp_obd, destroy_export)(exp);
1178         RETURN(0);
1179 }
1180
1181 static inline int obd_extent_calc(struct obd_export *exp,
1182                                   struct lov_stripe_md *md,
1183                                   int cmd, obd_off *offset)
1184 {
1185         int rc;
1186         ENTRY;
1187         EXP_CHECK_DT_OP(exp, extent_calc);
1188         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1189         RETURN(rc);
1190 }
1191
1192 static inline struct dentry *
1193 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1194 {
1195         LASSERT(exp->exp_obd);
1196
1197         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1198                                exp->exp_obd);
1199 }
1200
1201 static inline int
1202 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1203 {
1204         LASSERT(exp->exp_obd);
1205         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
1206 #if 0
1207         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1208                               dentry, exp->exp_obd);
1209 #endif
1210         return 0;
1211 }
1212
1213 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1214  * If the cache is older than @max_age we will get a new value from the
1215  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1216 static inline int obd_statfs_async(struct obd_export *exp,
1217                                    struct obd_info *oinfo,
1218                                    __u64 max_age,
1219                                    struct ptlrpc_request_set *rqset)
1220 {
1221         int rc = 0;
1222         struct obd_device *obd;
1223         ENTRY;
1224
1225         if (exp == NULL || exp->exp_obd == NULL)
1226                 RETURN(-EINVAL);
1227
1228         obd = exp->exp_obd;
1229         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1230         OBD_COUNTER_INCREMENT(obd, statfs);
1231
1232         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1233                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1234         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1235                 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1236         } else {
1237                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1238                        " objects "LPU64"/"LPU64"\n",
1239                        obd->obd_name, &obd->obd_osfs,
1240                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1241                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1242                 spin_lock(&obd->obd_osfs_lock);
1243                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1244                 spin_unlock(&obd->obd_osfs_lock);
1245                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1246                 if (oinfo->oi_cb_up)
1247                         oinfo->oi_cb_up(oinfo, 0);
1248         }
1249         RETURN(rc);
1250 }
1251
1252 static inline int obd_statfs_rqset(struct obd_export *exp,
1253                                    struct obd_statfs *osfs, __u64 max_age,
1254                                    __u32 flags)
1255 {
1256         struct ptlrpc_request_set *set = NULL;
1257         struct obd_info oinfo = { { { 0 } } };
1258         int rc = 0;
1259         ENTRY;
1260
1261         set =  ptlrpc_prep_set();
1262         if (set == NULL)
1263                 RETURN(-ENOMEM);
1264
1265         oinfo.oi_osfs = osfs;
1266         oinfo.oi_flags = flags;
1267         rc = obd_statfs_async(exp, &oinfo, max_age, set);
1268         if (rc == 0)
1269                 rc = ptlrpc_set_wait(set);
1270         ptlrpc_set_destroy(set);
1271         RETURN(rc);
1272 }
1273
1274 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1275  * If the cache is older than @max_age we will get a new value from the
1276  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1277 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1278                              struct obd_statfs *osfs, __u64 max_age,
1279                              __u32 flags)
1280 {
1281         int rc = 0;
1282         struct obd_device *obd = exp->exp_obd;
1283         ENTRY;
1284
1285         if (obd == NULL)
1286                 RETURN(-EINVAL);
1287
1288         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1289         OBD_COUNTER_INCREMENT(obd, statfs);
1290
1291         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1292                obd->obd_osfs_age, max_age);
1293         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1294                 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1295                 if (rc == 0) {
1296                         spin_lock(&obd->obd_osfs_lock);
1297                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1298                         obd->obd_osfs_age = cfs_time_current_64();
1299                         spin_unlock(&obd->obd_osfs_lock);
1300                 }
1301         } else {
1302                 CDEBUG(D_SUPER, "%s: use %p cache blocks "LPU64"/"LPU64
1303                        " objects "LPU64"/"LPU64"\n",
1304                        obd->obd_name, &obd->obd_osfs,
1305                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1306                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1307                 spin_lock(&obd->obd_osfs_lock);
1308                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1309                 spin_unlock(&obd->obd_osfs_lock);
1310         }
1311         RETURN(rc);
1312 }
1313
1314 static inline int obd_sync_rqset(struct obd_export *exp, struct obd_info *oinfo,
1315                                  obd_size start, obd_size end)
1316 {
1317         struct ptlrpc_request_set *set = NULL;
1318         int rc;
1319         ENTRY;
1320
1321         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1322         EXP_COUNTER_INCREMENT(exp, sync);
1323
1324         set =  ptlrpc_prep_set();
1325         if (set == NULL)
1326                 RETURN(-ENOMEM);
1327
1328         rc = OBP(exp->exp_obd, sync)(NULL, exp, oinfo, start, end, set);
1329         if (rc == 0)
1330                 rc = ptlrpc_set_wait(set);
1331         ptlrpc_set_destroy(set);
1332         RETURN(rc);
1333 }
1334
1335 static inline int obd_sync(const struct lu_env *env, struct obd_export *exp,
1336                            struct obd_info *oinfo, obd_size start, obd_size end,
1337                            struct ptlrpc_request_set *set)
1338 {
1339         int rc;
1340         ENTRY;
1341
1342         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1343         EXP_COUNTER_INCREMENT(exp, sync);
1344
1345         rc = OBP(exp->exp_obd, sync)(env, exp, oinfo, start, end, set);
1346         RETURN(rc);
1347 }
1348
1349 static inline int obd_punch_rqset(struct obd_export *exp,
1350                                   struct obd_info *oinfo,
1351                                   struct obd_trans_info *oti)
1352 {
1353         struct ptlrpc_request_set *set = NULL;
1354         int rc;
1355         ENTRY;
1356
1357         EXP_CHECK_DT_OP(exp, punch);
1358         EXP_COUNTER_INCREMENT(exp, punch);
1359
1360         set =  ptlrpc_prep_set();
1361         if (set == NULL)
1362                 RETURN(-ENOMEM);
1363
1364         rc = OBP(exp->exp_obd, punch)(NULL, exp, oinfo, oti, set);
1365         if (rc == 0)
1366                 rc = ptlrpc_set_wait(set);
1367         ptlrpc_set_destroy(set);
1368         RETURN(rc);
1369 }
1370
1371 static inline int obd_punch(const struct lu_env *env, struct obd_export *exp,
1372                             struct obd_info *oinfo, struct obd_trans_info *oti,
1373                             struct ptlrpc_request_set *rqset)
1374 {
1375         int rc;
1376         ENTRY;
1377
1378         EXP_CHECK_DT_OP(exp, punch);
1379         EXP_COUNTER_INCREMENT(exp, punch);
1380
1381         rc = OBP(exp->exp_obd, punch)(env, exp, oinfo, oti, rqset);
1382         RETURN(rc);
1383 }
1384
1385 static inline int obd_brw(int cmd, struct obd_export *exp,
1386                           struct obd_info *oinfo, obd_count oa_bufs,
1387                           struct brw_page *pg, struct obd_trans_info *oti)
1388 {
1389         int rc;
1390         ENTRY;
1391
1392         EXP_CHECK_DT_OP(exp, brw);
1393         EXP_COUNTER_INCREMENT(exp, brw);
1394
1395         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1396                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1397                        "or OBD_BRW_CHECK\n");
1398                 LBUG();
1399         }
1400
1401         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1402         RETURN(rc);
1403 }
1404
1405 static inline int obd_preprw(const struct lu_env *env, int cmd,
1406                              struct obd_export *exp, struct obdo *oa,
1407                              int objcount, struct obd_ioobj *obj,
1408                              struct niobuf_remote *remote, int *pages,
1409                              struct niobuf_local *local,
1410                              struct obd_trans_info *oti,
1411                              struct lustre_capa *capa)
1412 {
1413         int rc;
1414         ENTRY;
1415
1416         EXP_CHECK_DT_OP(exp, preprw);
1417         EXP_COUNTER_INCREMENT(exp, preprw);
1418
1419         rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1420                                        pages, local, oti, capa);
1421         RETURN(rc);
1422 }
1423
1424 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1425                                struct obd_export *exp, struct obdo *oa,
1426                                int objcount, struct obd_ioobj *obj,
1427                                struct niobuf_remote *rnb, int pages,
1428                                struct niobuf_local *local,
1429                                struct obd_trans_info *oti, int rc)
1430 {
1431         ENTRY;
1432
1433         EXP_CHECK_DT_OP(exp, commitrw);
1434         EXP_COUNTER_INCREMENT(exp, commitrw);
1435
1436         rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1437                                          rnb, pages, local, oti, rc);
1438         RETURN(rc);
1439 }
1440
1441 static inline int obd_merge_lvb(struct obd_export *exp,
1442                                 struct lov_stripe_md *lsm,
1443                                 struct ost_lvb *lvb, int kms_only)
1444 {
1445         int rc;
1446         ENTRY;
1447
1448         EXP_CHECK_DT_OP(exp, merge_lvb);
1449         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1450
1451         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1452         RETURN(rc);
1453 }
1454
1455 static inline int obd_adjust_kms(struct obd_export *exp,
1456                                  struct lov_stripe_md *lsm, obd_off size,
1457                                  int shrink)
1458 {
1459         int rc;
1460         ENTRY;
1461
1462         EXP_CHECK_DT_OP(exp, adjust_kms);
1463         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1464
1465         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1466         RETURN(rc);
1467 }
1468
1469 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1470                                 int len, void *karg, void *uarg)
1471 {
1472         int rc;
1473         ENTRY;
1474
1475         EXP_CHECK_DT_OP(exp, iocontrol);
1476         EXP_COUNTER_INCREMENT(exp, iocontrol);
1477
1478         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1479         RETURN(rc);
1480 }
1481
1482 static inline int obd_enqueue_rqset(struct obd_export *exp,
1483                                     struct obd_info *oinfo,
1484                                     struct ldlm_enqueue_info *einfo)
1485 {
1486         struct ptlrpc_request_set *set = NULL;
1487         int rc;
1488         ENTRY;
1489
1490         EXP_CHECK_DT_OP(exp, enqueue);
1491         EXP_COUNTER_INCREMENT(exp, enqueue);
1492
1493         set =  ptlrpc_prep_set();
1494         if (set == NULL)
1495                 RETURN(-ENOMEM);
1496
1497         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1498         if (rc == 0)
1499                 rc = ptlrpc_set_wait(set);
1500         ptlrpc_set_destroy(set);
1501         RETURN(rc);
1502 }
1503
1504 static inline int obd_enqueue(struct obd_export *exp,
1505                               struct obd_info *oinfo,
1506                               struct ldlm_enqueue_info *einfo,
1507                               struct ptlrpc_request_set *set)
1508 {
1509         int rc;
1510         ENTRY;
1511
1512         EXP_CHECK_DT_OP(exp, enqueue);
1513         EXP_COUNTER_INCREMENT(exp, enqueue);
1514
1515         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1516         RETURN(rc);
1517 }
1518
1519 static inline int obd_change_cbdata(struct obd_export *exp,
1520                                     struct lov_stripe_md *lsm,
1521                                     ldlm_iterator_t it, void *data)
1522 {
1523         int rc;
1524         ENTRY;
1525
1526         EXP_CHECK_DT_OP(exp, change_cbdata);
1527         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1528
1529         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1530         RETURN(rc);
1531 }
1532
1533 static inline int obd_find_cbdata(struct obd_export *exp,
1534                                   struct lov_stripe_md *lsm,
1535                                   ldlm_iterator_t it, void *data)
1536 {
1537         int rc;
1538         ENTRY;
1539
1540         EXP_CHECK_DT_OP(exp, find_cbdata);
1541         EXP_COUNTER_INCREMENT(exp, find_cbdata);
1542
1543         rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1544         RETURN(rc);
1545 }
1546
1547 static inline int obd_cancel(struct obd_export *exp,
1548                              struct lov_stripe_md *ea, __u32 mode,
1549                              struct lustre_handle *lockh)
1550 {
1551         int rc;
1552         ENTRY;
1553
1554         EXP_CHECK_DT_OP(exp, cancel);
1555         EXP_COUNTER_INCREMENT(exp, cancel);
1556
1557         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1558         RETURN(rc);
1559 }
1560
1561 static inline int obd_cancel_unused(struct obd_export *exp,
1562                                     struct lov_stripe_md *ea,
1563                                     ldlm_cancel_flags_t flags,
1564                                     void *opaque)
1565 {
1566         int rc;
1567         ENTRY;
1568
1569         EXP_CHECK_DT_OP(exp, cancel_unused);
1570         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1571
1572         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1573         RETURN(rc);
1574 }
1575
1576 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1577                           struct obd_capa *oc, struct obd_client_handle *handle,
1578                           int flag)
1579 {
1580         int rc;
1581         ENTRY;
1582
1583         EXP_CHECK_DT_OP(exp, pin);
1584         EXP_COUNTER_INCREMENT(exp, pin);
1585
1586         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1587         RETURN(rc);
1588 }
1589
1590 static inline int obd_unpin(struct obd_export *exp,
1591                             struct obd_client_handle *handle, int flag)
1592 {
1593         int rc;
1594         ENTRY;
1595
1596         EXP_CHECK_DT_OP(exp, unpin);
1597         EXP_COUNTER_INCREMENT(exp, unpin);
1598
1599         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1600         RETURN(rc);
1601 }
1602
1603
1604 static inline void obd_import_event(struct obd_device *obd,
1605                                     struct obd_import *imp,
1606                                     enum obd_import_event event)
1607 {
1608         ENTRY;
1609         if (!obd) {
1610                 CERROR("NULL device\n");
1611                 EXIT;
1612                 return;
1613         }
1614         if (obd->obd_set_up && OBP(obd, import_event)) {
1615                 OBD_COUNTER_INCREMENT(obd, import_event);
1616                 OBP(obd, import_event)(obd, imp, event);
1617         }
1618         EXIT;
1619 }
1620
1621 static inline int obd_llog_connect(struct obd_export *exp,
1622                                    struct llogd_conn_body *body)
1623 {
1624         int rc;
1625         ENTRY;
1626
1627         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1628         EXP_COUNTER_INCREMENT(exp, llog_connect);
1629
1630         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1631         RETURN(rc);
1632 }
1633
1634
1635 static inline int obd_notify(struct obd_device *obd,
1636                              struct obd_device *watched,
1637                              enum obd_notify_event ev,
1638                              void *data)
1639 {
1640         int rc;
1641         ENTRY;
1642         OBD_CHECK_DEV(obd);
1643
1644         /* the check for async_recov is a complete hack - I'm hereby
1645            overloading the meaning to also mean "this was called from
1646            mds_postsetup".  I know that my mds is able to handle notifies
1647            by this point, and it needs to get them to execute mds_postrecov. */
1648         if (!obd->obd_set_up && !obd->obd_async_recov) {
1649                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1650                 RETURN(-EINVAL);
1651         }
1652
1653         if (!OBP(obd, notify)) {
1654                 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1655                 RETURN(-ENOSYS);
1656         }
1657
1658         OBD_COUNTER_INCREMENT(obd, notify);
1659         rc = OBP(obd, notify)(obd, watched, ev, data);
1660         RETURN(rc);
1661 }
1662
1663 static inline int obd_notify_observer(struct obd_device *observer,
1664                                       struct obd_device *observed,
1665                                       enum obd_notify_event ev,
1666                                       void *data)
1667 {
1668         int rc1;
1669         int rc2;
1670
1671         struct obd_notify_upcall *onu;
1672
1673         if (observer->obd_observer)
1674                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1675         else
1676                 rc1 = 0;
1677         /*
1678          * Also, call non-obd listener, if any
1679          */
1680         onu = &observer->obd_upcall;
1681         if (onu->onu_upcall != NULL)
1682                 rc2 = onu->onu_upcall(observer, observed, ev,
1683                                       onu->onu_owner, NULL);
1684         else
1685                 rc2 = 0;
1686
1687         return rc1 ? rc1 : rc2;
1688 }
1689
1690 static inline int obd_quotacheck(struct obd_export *exp,
1691                                  struct obd_quotactl *oqctl)
1692 {
1693         int rc;
1694         ENTRY;
1695
1696         EXP_CHECK_DT_OP(exp, quotacheck);
1697         EXP_COUNTER_INCREMENT(exp, quotacheck);
1698
1699         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1700         RETURN(rc);
1701 }
1702
1703 static inline int obd_quotactl(struct obd_export *exp,
1704                                struct obd_quotactl *oqctl)
1705 {
1706         int rc;
1707         ENTRY;
1708
1709         EXP_CHECK_DT_OP(exp, quotactl);
1710         EXP_COUNTER_INCREMENT(exp, quotactl);
1711
1712         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1713         RETURN(rc);
1714 }
1715
1716 static inline int obd_health_check(const struct lu_env *env,
1717                                    struct obd_device *obd)
1718 {
1719         /* returns: 0 on healthy
1720          *         >0 on unhealthy + reason code/flag
1721          *            however the only suppored reason == 1 right now
1722          *            We'll need to define some better reasons
1723          *            or flags in the future.
1724          *         <0 on error
1725          */
1726         int rc;
1727         ENTRY;
1728
1729         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1730         if (obd == NULL || !OBT(obd)) {
1731                 CERROR("cleaned up obd\n");
1732                 RETURN(-EOPNOTSUPP);
1733         }
1734         if (!obd->obd_set_up || obd->obd_stopping)
1735                 RETURN(0);
1736         if (!OBP(obd, health_check))
1737                 RETURN(0);
1738
1739         rc = OBP(obd, health_check)(env, obd);
1740         RETURN(rc);
1741 }
1742
1743 static inline int obd_register_observer(struct obd_device *obd,
1744                                         struct obd_device *observer)
1745 {
1746         ENTRY;
1747         OBD_CHECK_DEV(obd);
1748         down_write(&obd->obd_observer_link_sem);
1749         if (obd->obd_observer && observer) {
1750                 up_write(&obd->obd_observer_link_sem);
1751                 RETURN(-EALREADY);
1752         }
1753         obd->obd_observer = observer;
1754         up_write(&obd->obd_observer_link_sem);
1755         RETURN(0);
1756 }
1757
1758 static inline int obd_pin_observer(struct obd_device *obd,
1759                                    struct obd_device **observer)
1760 {
1761         ENTRY;
1762         down_read(&obd->obd_observer_link_sem);
1763         if (!obd->obd_observer) {
1764                 *observer = NULL;
1765                 up_read(&obd->obd_observer_link_sem);
1766                 RETURN(-ENOENT);
1767         }
1768         *observer = obd->obd_observer;
1769         RETURN(0);
1770 }
1771
1772 static inline int obd_unpin_observer(struct obd_device *obd)
1773 {
1774         ENTRY;
1775         up_read(&obd->obd_observer_link_sem);
1776         RETURN(0);
1777 }
1778
1779 #if 0
1780 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1781                                                obd_page_removal_cb_t cb,
1782                                                obd_pin_extent_cb pin_cb)
1783 {
1784         int rc;
1785         ENTRY;
1786
1787         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1788         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1789
1790         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1791         RETURN(rc);
1792 }
1793
1794 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1795                                                  obd_page_removal_cb_t cb)
1796 {
1797         int rc;
1798         ENTRY;
1799
1800         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1801         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1802
1803         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1804         RETURN(rc);
1805 }
1806
1807 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1808                                               obd_lock_cancel_cb cb)
1809 {
1810         int rc;
1811         ENTRY;
1812
1813         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1814         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1815
1816         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1817         RETURN(rc);
1818 }
1819
1820 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1821                                                  obd_lock_cancel_cb cb)
1822 {
1823         int rc;
1824         ENTRY;
1825
1826         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1827         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1828
1829         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1830         RETURN(rc);
1831 }
1832 #endif
1833
1834 /* metadata helpers */
1835 static inline int md_getstatus(struct obd_export *exp,
1836                                struct lu_fid *fid, struct obd_capa **pc)
1837 {
1838         int rc;
1839         ENTRY;
1840
1841         EXP_CHECK_MD_OP(exp, getstatus);
1842         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1843         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1844         RETURN(rc);
1845 }
1846
1847 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1848                              struct ptlrpc_request **request)
1849 {
1850         int rc;
1851         ENTRY;
1852         EXP_CHECK_MD_OP(exp, getattr);
1853         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1854         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1855         RETURN(rc);
1856 }
1857
1858 static inline int md_change_cbdata(struct obd_export *exp,
1859                                    const struct lu_fid *fid,
1860                                    ldlm_iterator_t it, void *data)
1861 {
1862         int rc;
1863         ENTRY;
1864         EXP_CHECK_MD_OP(exp, change_cbdata);
1865         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1866         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1867         RETURN(rc);
1868 }
1869
1870 static inline int md_find_cbdata(struct obd_export *exp,
1871                                  const struct lu_fid *fid,
1872                                  ldlm_iterator_t it, void *data)
1873 {
1874         int rc;
1875         ENTRY;
1876         EXP_CHECK_MD_OP(exp, find_cbdata);
1877         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1878         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1879         RETURN(rc);
1880 }
1881
1882 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1883                            struct md_open_data *mod,
1884                            struct ptlrpc_request **request)
1885 {
1886         int rc;
1887         ENTRY;
1888         EXP_CHECK_MD_OP(exp, close);
1889         EXP_MD_COUNTER_INCREMENT(exp, close);
1890         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1891         RETURN(rc);
1892 }
1893
1894 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1895                             const void *data, int datalen, int mode, __u32 uid,
1896                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1897                             struct ptlrpc_request **request)
1898 {
1899         int rc;
1900         ENTRY;
1901         EXP_CHECK_MD_OP(exp, create);
1902         EXP_MD_COUNTER_INCREMENT(exp, create);
1903         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1904                                        uid, gid, cap_effective, rdev, request);
1905         RETURN(rc);
1906 }
1907
1908 static inline int md_done_writing(struct obd_export *exp,
1909                                   struct md_op_data *op_data,
1910                                   struct md_open_data *mod)
1911 {
1912         int rc;
1913         ENTRY;
1914         EXP_CHECK_MD_OP(exp, done_writing);
1915         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1916         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1917         RETURN(rc);
1918 }
1919
1920 static inline int md_enqueue(struct obd_export *exp,
1921                              struct ldlm_enqueue_info *einfo,
1922                              struct lookup_intent *it,
1923                              struct md_op_data *op_data,
1924                              struct lustre_handle *lockh,
1925                              void *lmm, int lmmsize,
1926                              struct ptlrpc_request **req,
1927                              int extra_lock_flags)
1928 {
1929         int rc;
1930         ENTRY;
1931         EXP_CHECK_MD_OP(exp, enqueue);
1932         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1933         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1934                                         lmm, lmmsize, req, extra_lock_flags);
1935         RETURN(rc);
1936 }
1937
1938 static inline int md_getattr_name(struct obd_export *exp,
1939                                   struct md_op_data *op_data,
1940                                   struct ptlrpc_request **request)
1941 {
1942         int rc;
1943         ENTRY;
1944         EXP_CHECK_MD_OP(exp, getattr_name);
1945         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1946         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1947         RETURN(rc);
1948 }
1949
1950 static inline int md_intent_lock(struct obd_export *exp,
1951                                  struct md_op_data *op_data, void *lmm,
1952                                  int lmmsize, struct lookup_intent *it,
1953                                  int lookup_flags, struct ptlrpc_request **reqp,
1954                                  ldlm_blocking_callback cb_blocking,
1955                                  __u64 extra_lock_flags)
1956 {
1957         int rc;
1958         ENTRY;
1959         EXP_CHECK_MD_OP(exp, intent_lock);
1960         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1961         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1962                                             it, lookup_flags, reqp, cb_blocking,
1963                                             extra_lock_flags);
1964         RETURN(rc);
1965 }
1966
1967 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1968                           struct ptlrpc_request **request)
1969 {
1970         int rc;
1971         ENTRY;
1972         EXP_CHECK_MD_OP(exp, link);
1973         EXP_MD_COUNTER_INCREMENT(exp, link);
1974         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1975         RETURN(rc);
1976 }
1977
1978 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1979                             const char *old, int oldlen, const char *new,
1980                             int newlen, struct ptlrpc_request **request)
1981 {
1982         int rc;
1983         ENTRY;
1984         EXP_CHECK_MD_OP(exp, rename);
1985         EXP_MD_COUNTER_INCREMENT(exp, rename);
1986         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1987                                        newlen, request);
1988         RETURN(rc);
1989 }
1990
1991 static inline int md_is_subdir(struct obd_export *exp,
1992                                const struct lu_fid *pfid,
1993                                const struct lu_fid *cfid,
1994                                struct ptlrpc_request **request)
1995 {
1996         int rc;
1997         ENTRY;
1998         EXP_CHECK_MD_OP(exp, is_subdir);
1999         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
2000         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
2001         RETURN(rc);
2002 }
2003
2004 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
2005                              void *ea, int ealen, void *ea2, int ea2len,
2006                              struct ptlrpc_request **request,
2007                              struct md_open_data **mod)
2008 {
2009         int rc;
2010         ENTRY;
2011         EXP_CHECK_MD_OP(exp, setattr);
2012         EXP_MD_COUNTER_INCREMENT(exp, setattr);
2013         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
2014                                         ea2, ea2len, request, mod);
2015         RETURN(rc);
2016 }
2017
2018 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
2019                           struct obd_capa *oc, struct ptlrpc_request **request)
2020 {
2021         int rc;
2022         ENTRY;
2023         EXP_CHECK_MD_OP(exp, sync);
2024         EXP_MD_COUNTER_INCREMENT(exp, sync);
2025         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
2026         RETURN(rc);
2027 }
2028
2029 static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
2030                               struct page **pages,
2031                               struct ptlrpc_request **request)
2032 {
2033         int rc;
2034         ENTRY;
2035         EXP_CHECK_MD_OP(exp, readpage);
2036         EXP_MD_COUNTER_INCREMENT(exp, readpage);
2037         rc = MDP(exp->exp_obd, readpage)(exp, opdata, pages, request);
2038         RETURN(rc);
2039 }
2040
2041 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
2042                             struct ptlrpc_request **request)
2043 {
2044         int rc;
2045         ENTRY;
2046         EXP_CHECK_MD_OP(exp, unlink);
2047         EXP_MD_COUNTER_INCREMENT(exp, unlink);
2048         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2049         RETURN(rc);
2050 }
2051
2052 static inline int md_get_lustre_md(struct obd_export *exp,
2053                                    struct ptlrpc_request *req,
2054                                    struct obd_export *dt_exp,
2055                                    struct obd_export *md_exp,
2056                                    struct lustre_md *md)
2057 {
2058         ENTRY;
2059         EXP_CHECK_MD_OP(exp, get_lustre_md);
2060         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2061         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2062 }
2063
2064 static inline int md_free_lustre_md(struct obd_export *exp,
2065                                     struct lustre_md *md)
2066 {
2067         ENTRY;
2068         EXP_CHECK_MD_OP(exp, free_lustre_md);
2069         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2070         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2071 }
2072
2073 static inline int md_setxattr(struct obd_export *exp,
2074                               const struct lu_fid *fid, struct obd_capa *oc,
2075                               obd_valid valid, const char *name,
2076                               const char *input, int input_size,
2077                               int output_size, int flags, __u32 suppgid,
2078                               struct ptlrpc_request **request)
2079 {
2080         ENTRY;
2081         EXP_CHECK_MD_OP(exp, setxattr);
2082         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2083         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2084                                            input_size, output_size, flags,
2085                                            suppgid, request));
2086 }
2087
2088 static inline int md_getxattr(struct obd_export *exp,
2089                               const struct lu_fid *fid, struct obd_capa *oc,
2090                               obd_valid valid, const char *name,
2091                               const char *input, int input_size,
2092                               int output_size, int flags,
2093                               struct ptlrpc_request **request)
2094 {
2095         ENTRY;
2096         EXP_CHECK_MD_OP(exp, getxattr);
2097         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2098         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2099                                            input_size, output_size, flags,
2100                                            request));
2101 }
2102
2103 static inline int md_set_open_replay_data(struct obd_export *exp,
2104                                           struct obd_client_handle *och,
2105                                           struct ptlrpc_request *open_req)
2106 {
2107         ENTRY;
2108         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2109         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2110         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2111 }
2112
2113 static inline int md_clear_open_replay_data(struct obd_export *exp,
2114                                             struct obd_client_handle *och)
2115 {
2116         ENTRY;
2117         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2118         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2119         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2120 }
2121
2122 static inline int md_set_lock_data(struct obd_export *exp,
2123                                    __u64 *lockh, void *data, __u64 *bits)
2124 {
2125         ENTRY;
2126         EXP_CHECK_MD_OP(exp, set_lock_data);
2127         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2128         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
2129 }
2130
2131 static inline int md_cancel_unused(struct obd_export *exp,
2132                                    const struct lu_fid *fid,
2133                                    ldlm_policy_data_t *policy,
2134                                    ldlm_mode_t mode,
2135                                    ldlm_cancel_flags_t flags,
2136                                    void *opaque)
2137 {
2138         int rc;
2139         ENTRY;
2140
2141         EXP_CHECK_MD_OP(exp, cancel_unused);
2142         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2143
2144         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2145                                               flags, opaque);
2146         RETURN(rc);
2147 }
2148
2149 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
2150                                         const struct lu_fid *fid,
2151                                         ldlm_type_t type,
2152                                         ldlm_policy_data_t *policy,
2153                                         ldlm_mode_t mode,
2154                                         struct lustre_handle *lockh)
2155 {
2156         ENTRY;
2157         EXP_CHECK_MD_OP(exp, lock_match);
2158         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2159         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2160                                              policy, mode, lockh));
2161 }
2162
2163 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2164                                   int def_asize, int cookiesize)
2165 {
2166         ENTRY;
2167         EXP_CHECK_MD_OP(exp, init_ea_size);
2168         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2169         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2170                                                cookiesize));
2171 }
2172
2173 static inline int md_get_remote_perm(struct obd_export *exp,
2174                                      const struct lu_fid *fid,
2175                                      struct obd_capa *oc, __u32 suppgid,
2176                                      struct ptlrpc_request **request)
2177 {
2178         ENTRY;
2179         EXP_CHECK_MD_OP(exp, get_remote_perm);
2180         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2181         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2182                                                   request));
2183 }
2184
2185 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2186                                 renew_capa_cb_t cb)
2187 {
2188         int rc;
2189         ENTRY;
2190         EXP_CHECK_MD_OP(exp, renew_capa);
2191         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2192         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2193         RETURN(rc);
2194 }
2195
2196 static inline int md_unpack_capa(struct obd_export *exp,
2197                                  struct ptlrpc_request *req,
2198                                  const struct req_msg_field *field,
2199                                  struct obd_capa **oc)
2200 {
2201         int rc;
2202         ENTRY;
2203         EXP_CHECK_MD_OP(exp, unpack_capa);
2204         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
2205         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
2206         RETURN(rc);
2207 }
2208
2209 static inline int md_intent_getattr_async(struct obd_export *exp,
2210                                           struct md_enqueue_info *minfo,
2211                                           struct ldlm_enqueue_info *einfo)
2212 {
2213         int rc;
2214         ENTRY;
2215         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2216         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2217         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2218         RETURN(rc);
2219 }
2220
2221 static inline int md_revalidate_lock(struct obd_export *exp,
2222                                      struct lookup_intent *it,
2223                                      struct lu_fid *fid, __u64 *bits)
2224 {
2225         int rc;
2226         ENTRY;
2227         EXP_CHECK_MD_OP(exp, revalidate_lock);
2228         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2229         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
2230         RETURN(rc);
2231 }
2232
2233
2234 /* OBD Metadata Support */
2235
2236 extern int obd_init_caches(void);
2237 extern void obd_cleanup_caches(void);
2238
2239 /* support routines */
2240 extern cfs_mem_cache_t *obdo_cachep;
2241
2242 #define OBDO_ALLOC(ptr)                                                       \
2243 do {                                                                          \
2244         OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, CFS_ALLOC_IO);             \
2245 } while(0)
2246
2247 #define OBDO_FREE(ptr)                                                        \
2248 do {                                                                          \
2249         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2250 } while(0)
2251
2252
2253 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2254 {
2255         /* something here */
2256 }
2257
2258 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2259 {
2260         /* something here */
2261 }
2262
2263 typedef int (*register_osp_cb)(void *data);
2264
2265 struct osp_register_item {
2266         struct obd_export **ori_exp;
2267         register_osp_cb     ori_cb_func;
2268         void               *ori_cb_data;
2269         cfs_list_t          ori_list;
2270         char                ori_name[MTI_NAME_MAXLEN];
2271 };
2272
2273 /* I'm as embarrassed about this as you are.
2274  *
2275  * <shaver> // XXX do not look into _superhack with remaining eye
2276  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2277 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2278
2279 /* obd_mount.c */
2280 int server_name2fsname(char *svname, char *fsname, char **endptr);
2281 int lustre_register_osp_item(char *ospname, struct obd_export **exp,
2282                              register_osp_cb cb_func, void *cb_data);
2283 void lustre_deregister_osp_item(struct obd_export **exp);
2284 int tgt_name2ospname(char *ost_name, char *osp_name);
2285
2286 /* sysctl.c */
2287 extern void obd_sysctl_init (void);
2288 extern void obd_sysctl_clean (void);
2289
2290 /* uuid.c  */
2291 typedef __u8 class_uuid_t[16];
2292 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2293
2294 /* lustre_peer.c    */
2295 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2296 int class_add_uuid(const char *uuid, __u64 nid);
2297 int class_del_uuid (const char *uuid);
2298 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
2299 void class_init_uuidlist(void);
2300 void class_exit_uuidlist(void);
2301
2302 /* mea.c */
2303 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2304 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2305
2306 /* prng.c */
2307 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
2308
2309 #endif /* __LINUX_OBD_CLASS_H */