lustre/include/linux/obd_class.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2001-2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifndef __LINUX_CLASS_OBD_H
  24 #define __LINUX_CLASS_OBD_H
  25
  26 #ifndef __KERNEL__
  27 #include <sys/types.h>
  28 #include <libcfs/list.h>
  29 #else
  30 #include <asm/segment.h>
  31 #include <asm/uaccess.h>
  32 #include <linux/types.h>
  33 #include <linux/fs.h>
  34 #include <linux/time.h>
  35 #include <linux/timer.h>
  36 #endif
  37
  38 #include <linux/obd_support.h>
  39 #include <linux/lustre_import.h>
  40 #include <linux/lustre_net.h>
  41 #include <linux/obd.h>
  42 #include <linux/lustre_lib.h>
  43 #include <linux/lustre_idl.h>
  44 #include <linux/lprocfs_status.h>
  45 #include <linux/lustre_log.h>
  46
  47 /* OBD Device Declarations */
  48 #define MAX_OBD_DEVICES 256
  49 extern struct obd_device obd_dev[MAX_OBD_DEVICES];
  50 extern spinlock_t obd_dev_lock;
  51
  52 /* OBD Operations Declarations */
  53 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  54 extern struct obd_device *class_exp2obd(struct obd_export *);
  55
  56 /* genops.c */
  57 struct obd_export *class_conn2export(struct lustre_handle *);
  58 int class_register_type(struct obd_ops *ops, struct md_ops *md_ops,
  59                         struct lprocfs_vars *, char *nm);
  60 int class_unregister_type(char *nm);
  61
  62 struct obd_device *class_newdev(struct obd_type *type);
  63 void class_release_dev(struct obd_device *obd);
  64
  65 int class_name2dev(char *name);
  66 struct obd_device *class_name2obd(char *name);
  67 int class_uuid2dev(struct obd_uuid *uuid);
  68 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  69 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  70                                           char * typ_name,
  71                                           struct obd_uuid *grp_uuid);
  72 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  73                                            int *next);
  74
  75 int oig_init(struct obd_io_group **oig);
  76 void oig_add_one(struct obd_io_group *oig,
  77                   struct oig_callback_context *occ);
  78 void oig_complete_one(struct obd_io_group *oig,
  79                        struct oig_callback_context *occ, int rc);
  80 void oig_release(struct obd_io_group *oig);
  81 int oig_wait(struct obd_io_group *oig);
  82
  83 /* obd_config.c */
  84 int class_process_config(struct lustre_cfg *lcfg);
  85
  86 /* Passed as data param to class_config_parse_handler() */
  87 struct config_llog_instance {
  88         char * cfg_instance;
  89         struct obd_uuid cfg_uuid;
  90         ptl_nid_t cfg_local_nid;
  91 };
  92
  93 int class_config_process_llog(struct llog_ctxt *ctxt, char *name,
  94                               struct config_llog_instance *cfg);
  95 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
  96                            struct config_llog_instance *cfg);
  97
  98 struct lustre_profile {
  99         struct list_head lp_list;
 100         char *lp_profile;
 101         char *lp_lov;
 102         char *lp_lmv;
 103         char *lp_gkc;
 104 };
 105
 106 struct lustre_profile *class_get_profile(char * prof);
 107 void class_del_profile(char *prof);
 108
 109 #define class_export_rpc_get(exp)                                       \
 110 ({                                                                      \
 111         atomic_inc(&(exp)->exp_rpc_count);                              \
 112         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 113                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 114         class_export_get(exp);                                          \
 115 })
 116
 117 #define class_export_rpc_put(exp)                                       \
 118 ({                                                                      \
 119         atomic_dec(&(exp)->exp_rpc_count);                              \
 120         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 121                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 122         class_export_put(exp);                                          \
 123 })
 124
 125 #define class_export_get(exp)                                                  \
 126 ({                                                                             \
 127         struct obd_export *exp_ = exp;                                         \
 128         atomic_inc(&exp_->exp_refcount);                                       \
 129         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 130                atomic_read(&exp_->exp_refcount));                              \
 131         exp_;                                                                  \
 132 })
 133
 134 #define class_export_put(exp)                                                  \
 135 do {                                                                           \
 136         LASSERT((exp) != NULL);                                                \
 137         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 138                atomic_read(&(exp)->exp_refcount) - 1);                         \
 139         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 140         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 141         __class_export_put(exp);                                               \
 142 } while (0)
 143
 144 void __class_export_put(struct obd_export *);
 145 struct obd_export *class_new_export(struct obd_device *obddev);
 146 void class_unlink_export(struct obd_export *exp);
 147
 148 struct obd_import *class_import_get(struct obd_import *);
 149 void class_import_put(struct obd_import *);
 150 struct obd_import *class_new_import(void);
 151 void class_destroy_import(struct obd_import *exp);
 152
 153 struct obd_type *class_get_type(char *name);
 154 void class_put_type(struct obd_type *type);
 155 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 156                   struct obd_uuid *cluuid);
 157 int class_disconnect(struct obd_export *exp, unsigned long flags);
 158 void class_disconnect_exports(struct obd_device *, unsigned long);
 159 int class_disconnect_stale_exports(struct obd_device *,
 160                                    int (*test_export)(struct obd_export *),
 161                                    unsigned long);
 162
 163 /* generic operations shared by various OBD types */
 164 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
 165 int class_multi_cleanup(struct obd_device *obddev);
 166
 167 /* obdo.c */
 168 #ifdef __KERNEL__
 169 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
 170 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_valid valid);
 171 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_valid valid);
 172 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 173 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 174 #endif
 175 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_valid valid);
 176 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_valid compare);
 177 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 178
 179 #define OBT(dev)        (dev)->obd_type
 180 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 181 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 182 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 183
 184 /* Ensure obd_setup: used for cleanup which must be called
 185    while obd is stopping */
 186 #define OBD_CHECK_DEV(obd)                                      \
 187 do {                                                            \
 188         if (!(obd)) {                                           \
 189                 CERROR("NULL device\n");                        \
 190                 RETURN(-ENODEV);                                \
 191         }                                                       \
 192 } while (0)
 193
 194 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 195 do {                                                            \
 196         OBD_CHECK_DEV(obd);                                     \
 197         if (!(obd)->obd_set_up) {                               \
 198                 CERROR("Device %d not setup\n",                 \
 199                        (obd)->obd_minor);                       \
 200                 RETURN(-ENODEV);                                \
 201         }                                                       \
 202                                                                 \
 203         if (!(obd)->obd_stopping) {                             \
 204                 CERROR("Device %d not stopping\n",              \
 205                        (obd)->obd_minor);                       \
 206                 RETURN(-ENODEV);                                \
 207         }                                                       \
 208 } while (0)
 209
 210 /* ensure obd_setup and !obd_stopping */
 211 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 212 do {                                                            \
 213         OBD_CHECK_DEV(obd);                                     \
 214         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 215                 CERROR("Device %d not setup\n",                 \
 216                        (obd)->obd_minor);                       \
 217                 RETURN(-ENODEV);                                \
 218         }                                                       \
 219 } while (0)
 220
 221
 222 #ifdef LPROCFS
 223 #define OBD_COUNTER_OFFSET(op)                                  \
 224         ((offsetof(struct obd_ops, o_ ## op) -                  \
 225           offsetof(struct obd_ops, o_iocontrol))                \
 226          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 227
 228 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 229         if ((obd)->obd_stats != NULL) {                         \
 230                 unsigned int coffset;                           \
 231                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 232                         OBD_COUNTER_OFFSET(op);                 \
 233                 LASSERT(coffset < (obd)->obd_stats->ls_num);    \
 234                 lprocfs_counter_incr((obd)->obd_stats, coffset);\
 235         }
 236
 237 #define MD_COUNTER_OFFSET(op)                                  \
 238         ((offsetof(struct md_ops, m_ ## op) -                  \
 239           offsetof(struct md_ops, m_getstatus))                \
 240          / sizeof(((struct md_ops *)(0))->m_getstatus))
 241
 242 #define MD_COUNTER_INCREMENT(obd, op)                           \
 243         if ((obd)->md_stats != NULL) {                          \
 244                 unsigned int coffset;                           \
 245                 coffset = (unsigned int)(obd)->md_cntr_base +   \
 246                         MD_COUNTER_OFFSET(op);                  \
 247                 LASSERT(coffset < (obd)->md_stats->ls_num);     \
 248                 lprocfs_counter_incr((obd)->md_stats, coffset); \
 249         }
 250
 251 #else
 252 #define OBD_COUNTER_OFFSET(op)
 253 #define OBD_COUNTER_INCREMENT(obd, op)
 254 #define MD_COUNTER_INCREMENT(obd, op)
 255 #endif
 256
 257 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 258 do {                                                            \
 259         if (!OBT(obd) || !MDP((obd), op)) {\
 260                 if (err)                                        \
 261                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 262                                obd->obd_name, obd->obd_minor);  \
 263                 RETURN(err);                                    \
 264         }                                                       \
 265 } while (0)
 266
 267 #define EXP_CHECK_MD_OP(exp, op)                                \
 268 do {                                                            \
 269         if ((exp) == NULL) {                                    \
 270                 CERROR("obd_" #op ": NULL export\n");           \
 271                 portals_debug_dumplog();                        \
 272                 RETURN(-ENODEV);                                \
 273         }                                                       \
 274         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 275                 CERROR("obd_" #op ": cleaned up obd\n");        \
 276                 RETURN(-EOPNOTSUPP);                            \
 277         }                                                       \
 278         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 279                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 280                        (exp)->exp_obd->obd_name,                \
 281                        (exp)->exp_obd->obd_minor);              \
 282                 RETURN(-EOPNOTSUPP);                            \
 283         }                                                       \
 284 } while (0)
 285
 286 #define OBD_CHECK_OP(obd, op, err)                              \
 287 do {                                                            \
 288         if (!OBT(obd) || !OBP((obd), op)) {\
 289                 if (err)                                        \
 290                         CERROR("obd_" #op ": dev %s/%d no operation\n", \
 291                                obd->obd_name, obd->obd_minor);  \
 292                 RETURN(err);                                    \
 293         }                                                       \
 294 } while (0)
 295
 296 #define EXP_CHECK_OP(exp, op)                                   \
 297 do {                                                            \
 298         if ((exp) == NULL) {                                    \
 299                 CERROR("obd_" #op ": NULL export\n");           \
 300                 portals_debug_dumplog();                        \
 301                 RETURN(-ENODEV);                                \
 302         }                                                       \
 303         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 304                 CERROR("obd_" #op ": cleaned up obd\n");        \
 305                 RETURN(-EOPNOTSUPP);                            \
 306         }                                                       \
 307         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 308                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 309                        (exp)->exp_obd->obd_name,                \
 310                        (exp)->exp_obd->obd_minor);              \
 311                 RETURN(-EOPNOTSUPP);                            \
 312         }                                                       \
 313 } while (0)
 314
 315 #define CTXT_CHECK_OP(ctxt, op, err)                            \
 316 do {                                                            \
 317         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {        \
 318                 if (err)                                        \
 319                         CERROR("lop_" #op ": dev %d no operation\n",    \
 320                                ctxt->loc_obd->obd_minor);               \
 321                 RETURN(err);                                    \
 322         }                                                       \
 323 } while (0)
 324
 325 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 326                                void *key, __u32 *vallen, void *val)
 327 {
 328         int rc;
 329         ENTRY;
 330
 331         EXP_CHECK_OP(exp, get_info);
 332         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 333
 334         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 335         RETURN(rc);
 336 }
 337
 338 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 339                                void *key, obd_count vallen, void *val)
 340 {
 341         int rc;
 342         ENTRY;
 343
 344         EXP_CHECK_OP(exp, set_info);
 345         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 346
 347         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 348         RETURN(rc);
 349 }
 350
 351 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 352 {
 353         int rc;
 354         ENTRY;
 355
 356         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 357         OBD_COUNTER_INCREMENT(obd, setup);
 358
 359         rc = OBP(obd, setup)(obd, datalen, data);
 360         RETURN(rc);
 361 }
 362
 363 static inline int obd_precleanup(struct obd_device *obd, int flags)
 364 {
 365         int rc;
 366         ENTRY;
 367
 368         OBD_CHECK_OP(obd, precleanup, 0);
 369         OBD_COUNTER_INCREMENT(obd, precleanup);
 370
 371         rc = OBP(obd, precleanup)(obd, flags);
 372         RETURN(rc);
 373 }
 374
 375 static inline int obd_cleanup(struct obd_device *obd, int flags)
 376 {
 377         int rc;
 378         ENTRY;
 379
 380         OBD_CHECK_DEV_STOPPING(obd);
 381         OBD_CHECK_OP(obd, cleanup, 0);
 382         OBD_COUNTER_INCREMENT(obd, cleanup);
 383
 384         rc = OBP(obd, cleanup)(obd, flags);
 385         RETURN(rc);
 386 }
 387
 388 static inline int
 389 obd_process_config(struct obd_device *obd, int datalen, void *data)
 390 {
 391         int rc;
 392         ENTRY;
 393
 394         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 395         OBD_COUNTER_INCREMENT(obd, process_config);
 396
 397         rc = OBP(obd, process_config)(obd, datalen, data);
 398         RETURN(rc);
 399 }
 400
 401 /* Pack an in-memory MD struct for storage on disk.
 402  * Returns +ve size of packed MD (0 for free), or -ve error.
 403  *
 404  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 405  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 406  * If @*disk_tgt == NULL, it will be allocated
 407  */
 408 static inline int obd_packmd(struct obd_export *exp,
 409                              struct lov_mds_md **disk_tgt,
 410                              struct lov_stripe_md *mem_src)
 411 {
 412         int rc;
 413         ENTRY;
 414
 415         EXP_CHECK_OP(exp, packmd);
 416         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 417
 418         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 419         RETURN(rc);
 420 }
 421
 422 static inline int obd_size_diskmd(struct obd_export *exp,
 423                                   struct lov_stripe_md *mem_src)
 424 {
 425         return obd_packmd(exp, NULL, mem_src);
 426 }
 427
 428 /* helper functions */
 429 static inline int obd_alloc_diskmd(struct obd_export *exp,
 430                                    struct lov_mds_md **disk_tgt)
 431 {
 432         LASSERT(disk_tgt);
 433         LASSERT(*disk_tgt == NULL);
 434         return obd_packmd(exp, disk_tgt, NULL);
 435 }
 436
 437 static inline int obd_free_diskmd(struct obd_export *exp,
 438                                   struct lov_mds_md **disk_tgt)
 439 {
 440         LASSERT(disk_tgt);
 441         LASSERT(*disk_tgt);
 442         return obd_packmd(exp, disk_tgt, NULL);
 443 }
 444
 445 /* Unpack an MD struct from disk to in-memory format.
 446  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 447  *
 448  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 449  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 450  * If @*mem_tgt == NULL, it will be allocated
 451  */
 452 static inline int obd_unpackmd(struct obd_export *exp,
 453                                struct lov_stripe_md **mem_tgt,
 454                                struct lov_mds_md *disk_src,
 455                                int disk_len)
 456 {
 457         int rc;
 458         ENTRY;
 459
 460         EXP_CHECK_OP(exp, unpackmd);
 461         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 462
 463         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 464         RETURN(rc);
 465 }
 466
 467 /* helper functions */
 468 static inline int obd_alloc_memmd(struct obd_export *exp,
 469                                   struct lov_stripe_md **mem_tgt)
 470 {
 471         LASSERT(mem_tgt);
 472         LASSERT(*mem_tgt == NULL);
 473         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 474 }
 475
 476 static inline int obd_free_memmd(struct obd_export *exp,
 477                                  struct lov_stripe_md **mem_tgt)
 478 {
 479         LASSERT(mem_tgt);
 480         LASSERT(*mem_tgt);
 481         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 482 }
 483
 484 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 485                                     struct lov_stripe_md *ea,
 486                                     struct obd_trans_info *oti)
 487 {
 488         int rc;
 489         ENTRY;
 490
 491         EXP_CHECK_OP(exp, revalidate_md);
 492         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 493
 494         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 495         RETURN(rc);
 496 }
 497
 498 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 499                              void *acl, int acl_size,
 500                              struct lov_stripe_md **ea,
 501                              struct obd_trans_info *oti)
 502 {
 503         int rc;
 504         ENTRY;
 505
 506         EXP_CHECK_OP(exp, create);
 507         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 508
 509         rc = OBP(exp->exp_obd, create)(exp, obdo, acl, acl_size, ea, oti);
 510         RETURN(rc);
 511 }
 512
 513 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 514                               struct lov_stripe_md *ea,
 515                               struct obd_trans_info *oti)
 516 {
 517         int rc;
 518         ENTRY;
 519
 520         EXP_CHECK_OP(exp, destroy);
 521         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 522
 523         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 524         RETURN(rc);
 525 }
 526
 527 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 528                               struct lov_stripe_md *ea)
 529 {
 530         int rc;
 531         ENTRY;
 532
 533         EXP_CHECK_OP(exp, getattr);
 534         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 535
 536         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 537         RETURN(rc);
 538 }
 539
 540 static inline int obd_getattr_async(struct obd_export *exp,
 541                                     struct obdo *obdo, struct lov_stripe_md *ea,
 542                                     struct ptlrpc_request_set *set)
 543 {
 544         int rc;
 545         ENTRY;
 546
 547         EXP_CHECK_OP(exp, getattr);
 548         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 549
 550         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 551         RETURN(rc);
 552 }
 553
 554 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 555                               struct lov_stripe_md *ea,
 556                               struct obd_trans_info *oti)
 557 {
 558         int rc;
 559         ENTRY;
 560
 561         EXP_CHECK_OP(exp, setattr);
 562         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 563
 564         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti);
 565         RETURN(rc);
 566 }
 567 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 568                                int priority)
 569 {
 570         struct obd_device *obd = imp->imp_obd;
 571         int rc;
 572         ENTRY;
 573
 574         OBD_CHECK_DEV_ACTIVE(obd);
 575         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 576         OBD_COUNTER_INCREMENT(obd, add_conn);
 577
 578         rc = OBP(obd, add_conn)(imp, uuid, priority);
 579         RETURN(rc);
 580 }
 581
 582 static inline int obd_del_conn(struct obd_import *imp,
 583                                struct obd_uuid *uuid)
 584 {
 585         struct obd_device *obd = imp->imp_obd;
 586         int rc;
 587         ENTRY;
 588
 589         OBD_CHECK_DEV_ACTIVE(obd);
 590         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 591         OBD_COUNTER_INCREMENT(obd, del_conn);
 592
 593         rc = OBP(obd, del_conn)(imp, uuid);
 594         RETURN(rc);
 595 }
 596
 597
 598 static inline int obd_connect(struct lustre_handle *conn,
 599                               struct obd_device *obd,
 600                               struct obd_uuid *cluuid,
 601                               struct obd_connect_data *data,
 602                               unsigned long flags)
 603 {
 604         int rc;
 605         ENTRY;
 606
 607         OBD_CHECK_DEV_ACTIVE(obd);
 608         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 609         OBD_COUNTER_INCREMENT(obd, connect);
 610
 611         rc = OBP(obd, connect)(conn, obd, cluuid, data, flags);
 612         RETURN(rc);
 613 }
 614
 615 static inline int obd_connect_post(struct obd_export *exp,
 616                                    unsigned initial,
 617                                    unsigned long flags)
 618 {
 619         int rc;
 620         ENTRY;
 621
 622         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 623         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 624                 RETURN(0);
 625         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 626         rc = OBP(exp->exp_obd, connect_post)(exp, initial, flags);
 627         RETURN(rc);
 628 }
 629
 630 static inline int obd_disconnect(struct obd_export *exp,
 631                                  unsigned long flags)
 632 {
 633         int rc;
 634         ENTRY;
 635
 636         EXP_CHECK_OP(exp, disconnect);
 637         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 638
 639         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 640         RETURN(rc);
 641 }
 642
 643 static inline int obd_init_export(struct obd_export *exp)
 644 {
 645         int rc = 0;
 646
 647         ENTRY;
 648         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 649             OBP((exp)->exp_obd, init_export))
 650                 rc = OBP(exp->exp_obd, init_export)(exp);
 651         RETURN(rc);
 652 }
 653
 654 static inline int obd_destroy_export(struct obd_export *exp)
 655 {
 656         ENTRY;
 657         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 658             OBP((exp)->exp_obd, destroy_export))
 659                 OBP(exp->exp_obd, destroy_export)(exp);
 660         RETURN(0);
 661 }
 662
 663 static inline struct dentry *
 664 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 665                    __u32 gen, __u64 gr)
 666 {
 667         LASSERT(exp->exp_obd);
 668
 669         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 670                               ino, gen, gr, exp->exp_obd);
 671 }
 672
 673 #ifndef time_before
 674 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 675 #endif
 676
 677 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 678  * If the cache is older than @max_age we will get a new value from the
 679  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 680 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 681                              unsigned long max_age)
 682 {
 683         int rc = 0;
 684         ENTRY;
 685
 686         if (obd == NULL)
 687                 RETURN(-EINVAL);
 688
 689         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 690         OBD_COUNTER_INCREMENT(obd, statfs);
 691
 692         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 693         if (time_before(obd->obd_osfs_age, max_age)) {
 694                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 695                 if (rc == 0) {
 696                         spin_lock(&obd->obd_osfs_lock);
 697                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 698                         obd->obd_osfs_age = jiffies;
 699                         spin_unlock(&obd->obd_osfs_lock);
 700                 }
 701         } else {
 702                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 703                 spin_lock(&obd->obd_osfs_lock);
 704                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 705                 spin_unlock(&obd->obd_osfs_lock);
 706         }
 707         RETURN(rc);
 708 }
 709
 710 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 711                            struct lov_stripe_md *ea, obd_size start,
 712                            obd_size end)
 713 {
 714         int rc;
 715         ENTRY;
 716
 717         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 718         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 719
 720         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 721         RETURN(rc);
 722 }
 723
 724 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 725                             struct lov_stripe_md *ea, obd_size start,
 726                             obd_size end, struct obd_trans_info *oti)
 727 {
 728         int rc;
 729         ENTRY;
 730
 731         EXP_CHECK_OP(exp, punch);
 732         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 733
 734         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 735         RETURN(rc);
 736 }
 737
 738 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 739                           struct lov_stripe_md *ea, obd_count oa_bufs,
 740                           struct brw_page *pg, struct obd_trans_info *oti)
 741 {
 742         int rc;
 743         ENTRY;
 744
 745         EXP_CHECK_OP(exp, brw);
 746         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 747
 748         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 749                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 750                        "or OBD_BRW_CHECK\n");
 751                 LBUG();
 752         }
 753
 754         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 755         RETURN(rc);
 756 }
 757
 758 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 759                                 struct obdo *oa, struct lov_stripe_md *ea,
 760                                 obd_count oa_bufs, struct brw_page *pg,
 761                                 struct ptlrpc_request_set *set,
 762                                 struct obd_trans_info *oti)
 763 {
 764         int rc;
 765         ENTRY;
 766
 767         EXP_CHECK_OP(exp, brw_async);
 768         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 769
 770         if (!(cmd & OBD_BRW_RWMASK)) {
 771                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 772                 LBUG();
 773         }
 774
 775         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 776                                           oti);
 777         RETURN(rc);
 778 }
 779
 780 static inline int obd_prep_async_page(struct obd_export *exp,
 781                                       struct lov_stripe_md *lsm,
 782                                       struct lov_oinfo *loi,
 783                                       struct page *page, obd_off offset,
 784                                       struct obd_async_page_ops *ops,
 785                                       void *data, void **res)
 786 {
 787         int ret;
 788         ENTRY;
 789
 790         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 791         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 792
 793         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 794                                                  ops, data, res);
 795         RETURN(ret);
 796 }
 797
 798 static inline int obd_queue_async_io(struct obd_export *exp,
 799                                      struct lov_stripe_md *lsm,
 800                                      struct lov_oinfo *loi, void *cookie,
 801                                      int cmd, obd_off off, int count,
 802                                      obd_flags brw_flags, obd_flags async_flags)
 803 {
 804         int rc;
 805         ENTRY;
 806
 807         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 808         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 809         LASSERT(cmd & OBD_BRW_RWMASK);
 810
 811         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 812                                                count, brw_flags, async_flags);
 813         RETURN(rc);
 814 }
 815
 816 static inline int obd_set_async_flags(struct obd_export *exp,
 817                                       struct lov_stripe_md *lsm,
 818                                       struct lov_oinfo *loi, void *cookie,
 819                                       obd_flags async_flags)
 820 {
 821         int rc;
 822         ENTRY;
 823
 824         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 825         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 826
 827         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 828                                                 async_flags);
 829         RETURN(rc);
 830 }
 831
 832 static inline int obd_queue_group_io(struct obd_export *exp,
 833                                      struct lov_stripe_md *lsm,
 834                                      struct lov_oinfo *loi,
 835                                      struct obd_io_group *oig,
 836                                      void *cookie, int cmd, obd_off off,
 837                                      int count, obd_flags brw_flags,
 838                                      obd_flags async_flags)
 839 {
 840         int rc;
 841         ENTRY;
 842
 843         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 844         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 845         LASSERT(cmd & OBD_BRW_RWMASK);
 846
 847         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 848                                                cmd, off, count, brw_flags,
 849                                                async_flags);
 850         RETURN(rc);
 851 }
 852
 853 static inline int obd_trigger_group_io(struct obd_export *exp,
 854                                        struct lov_stripe_md *lsm,
 855                                        struct lov_oinfo *loi,
 856                                        struct obd_io_group *oig)
 857 {
 858         int rc;
 859         ENTRY;
 860
 861         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 862         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 863
 864         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 865         RETURN(rc);
 866 }
 867
 868 static inline int obd_teardown_async_page(struct obd_export *exp,
 869                                           struct lov_stripe_md *lsm,
 870                                           struct lov_oinfo *loi, void *cookie)
 871 {
 872         int rc;
 873         ENTRY;
 874
 875         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 876         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 877
 878         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 879         RETURN(rc);
 880 }
 881
 882 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 883                              int objcount, struct obd_ioobj *obj,
 884                              int niocount, struct niobuf_remote *remote,
 885                              struct niobuf_local *local,
 886                              struct obd_trans_info *oti)
 887 {
 888         int rc;
 889         ENTRY;
 890
 891         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 892         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 893
 894         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 895                                        remote, local, oti);
 896         RETURN(rc);
 897 }
 898
 899 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 900                                int objcount, struct obd_ioobj *obj,
 901                                int niocount, struct niobuf_local *local,
 902                                struct obd_trans_info *oti, int rc)
 903 {
 904         ENTRY;
 905
 906         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 907         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 908
 909         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 910                                          local, oti, rc);
 911         RETURN(rc);
 912 }
 913
 914 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 915                             int objcount,struct niobuf_remote *rnb)
 916 {
 917         int rc;
 918         ENTRY;
 919
 920         /* there are cases when write_extents is not implemented. */
 921         if (!OBP(exp->exp_obd, do_cow))
 922                 RETURN(0);
 923
 924         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 925
 926         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 927
 928         RETURN(rc);
 929 }
 930
 931 static inline int obd_write_extents(struct obd_export *exp,
 932                                     struct obd_ioobj *obj,
 933                                     int objcount, int niocount,
 934                                     struct niobuf_local *local,
 935                                     int rc)
 936 {
 937         ENTRY;
 938
 939         /* there are cases when write_extents is not implemented. */
 940         if (!OBP(exp->exp_obd, write_extents))
 941                 RETURN(0);
 942
 943         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
 944
 945         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
 946                                               local, rc);
 947         RETURN(rc);
 948 }
 949
 950 static inline int obd_adjust_kms(struct obd_export *exp,
 951                                  struct lov_stripe_md *lsm,
 952                                  obd_off size, int shrink)
 953 {
 954         int rc;
 955         ENTRY;
 956
 957         OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
 958         OBD_COUNTER_INCREMENT(exp->exp_obd, adjust_kms);
 959
 960         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
 961         RETURN(rc);
 962 }
 963
 964 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
 965                                 int len, void *karg, void *uarg)
 966 {
 967         int rc;
 968         ENTRY;
 969
 970         EXP_CHECK_OP(exp, iocontrol);
 971         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
 972
 973         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
 974         RETURN(rc);
 975 }
 976
 977 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
 978                               __u32 type, ldlm_policy_data_t *policy,
 979                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
 980                               void *gl_cb, void *data, __u32 lvb_len,
 981                               void *lvb_swabber, struct lustre_handle *lockh)
 982 {
 983         int rc;
 984         ENTRY;
 985
 986         EXP_CHECK_OP(exp, enqueue);
 987         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
 988
 989         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
 990                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
 991                                         lvb_swabber, lockh);
 992         RETURN(rc);
 993 }
 994
 995 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
 996                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
 997                             int *flags, void *data, struct lustre_handle *lockh)
 998 {
 999         int rc;
1000         ENTRY;
1001
1002         EXP_CHECK_OP(exp, match);
1003         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1004
1005         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1006                                       lockh);
1007         RETURN(rc);
1008 }
1009
1010 static inline int obd_change_cbdata(struct obd_export *exp,
1011                                     struct lov_stripe_md *lsm,
1012                                     ldlm_iterator_t it, void *data)
1013 {
1014         int rc;
1015         ENTRY;
1016
1017         EXP_CHECK_OP(exp, change_cbdata);
1018         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1019
1020         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1021         RETURN(rc);
1022 }
1023
1024 static inline int obd_cancel(struct obd_export *exp,
1025                              struct lov_stripe_md *ea, __u32 mode,
1026                              struct lustre_handle *lockh)
1027 {
1028         int rc;
1029         ENTRY;
1030
1031         EXP_CHECK_OP(exp, cancel);
1032         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1033
1034         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1035         RETURN(rc);
1036 }
1037
1038 static inline int obd_cancel_unused(struct obd_export *exp,
1039                                     struct lov_stripe_md *ea, int flags,
1040                                     void *opaque)
1041 {
1042         int rc;
1043         ENTRY;
1044
1045         EXP_CHECK_OP(exp, cancel_unused);
1046         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1047
1048         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1049         RETURN(rc);
1050 }
1051
1052
1053 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1054                                  struct obdo *oa,
1055                                  int objcount, struct obd_ioobj *obj,
1056                                  int niocount, struct niobuf_remote *remote)
1057 {
1058         int rc;
1059
1060         EXP_CHECK_OP(exp, preprw);
1061         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1062
1063         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1064                                            niocount, remote);
1065         class_export_put(exp);
1066         return(rc);
1067 }
1068
1069 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1070                           int type, struct obd_client_handle *handle, int flag)
1071 {
1072         int rc;
1073
1074         EXP_CHECK_OP(exp, pin);
1075         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1076
1077         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1078         return(rc);
1079 }
1080
1081 static inline int obd_unpin(struct obd_export *exp,
1082                             struct obd_client_handle *handle, int flag)
1083 {
1084         int rc;
1085
1086         EXP_CHECK_OP(exp, unpin);
1087         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1088
1089         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1090         return(rc);
1091 }
1092
1093
1094 static inline void obd_import_event(struct obd_device *obd,
1095                                     struct obd_import *imp,
1096                                     enum obd_import_event event)
1097 {
1098         if (!obd) {
1099                 CERROR("NULL device\n");
1100                 EXIT;
1101                 return;
1102         }
1103         if (obd->obd_set_up && OBP(obd, import_event)) {
1104                 OBD_COUNTER_INCREMENT(obd, import_event);
1105                 OBP(obd, import_event)(obd, imp, event);
1106         }
1107 }
1108
1109 static inline int obd_llog_connect(struct obd_export *exp,
1110                                         struct llogd_conn_body *body)
1111 {
1112         ENTRY;
1113         EXP_CHECK_OP(exp, llog_connect);
1114         return OBP(exp->exp_obd, llog_connect)(exp, body);
1115 }
1116
1117 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1118                              int active, void *data)
1119 {
1120         OBD_CHECK_DEV(obd);
1121         if (!obd->obd_set_up) {
1122                 CERROR("obd %s not set up\n", obd->obd_name);
1123                 return -EINVAL;
1124         }
1125
1126         if (!OBP(obd, notify)) {
1127                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1128                 return -ENOSYS;
1129         }
1130
1131         OBD_COUNTER_INCREMENT(obd, notify);
1132         return OBP(obd, notify)(obd, watched, active, data);
1133 }
1134
1135 static inline int obd_register_observer(struct obd_device *obd,
1136                                         struct obd_device *observer)
1137 {
1138         ENTRY;
1139         OBD_CHECK_DEV(obd);
1140         if (obd->obd_observer && observer)
1141                 RETURN(-EALREADY);
1142         obd->obd_observer = observer;
1143         RETURN(0);
1144 }
1145
1146 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1147 {
1148         int rc;
1149         ENTRY;
1150         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1151         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1152         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1153         RETURN(rc);
1154 }
1155
1156 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1157 {
1158         int rc;
1159
1160         EXP_CHECK_MD_OP(exp, getstatus);
1161         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1162         rc = MDP(exp->exp_obd, getstatus)(exp, id);
1163         RETURN(rc);
1164 }
1165
1166 static inline int md_delete_inode(struct obd_export *exp,
1167                                   struct lustre_id *id)
1168 {
1169         int rc;
1170         ENTRY;
1171
1172         if (MDP(exp->exp_obd, delete_inode) == NULL)
1173                 RETURN(0);
1174
1175         MD_COUNTER_INCREMENT(exp->exp_obd, delete_inode);
1176         rc = MDP(exp->exp_obd, delete_inode)(exp, id);
1177         RETURN(rc);
1178 }
1179
1180 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1181                              __u64 valid, const char *xattr_name,
1182                              const void *xattr_data, unsigned int xattr_datalen,
1183                              unsigned int ea_size,
1184                              struct ptlrpc_request **request)
1185 {
1186         int rc;
1187         ENTRY;
1188         EXP_CHECK_MD_OP(exp, getattr);
1189         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1190         rc = MDP(exp->exp_obd, getattr)(exp, id, valid, xattr_name,
1191                                         xattr_data, xattr_datalen,
1192                                         ea_size, request);
1193         RETURN(rc);
1194 }
1195
1196 static inline int md_access_check(struct obd_export *exp, struct lustre_id *id,
1197                                   struct ptlrpc_request **request)
1198 {
1199         int rc;
1200         ENTRY;
1201         EXP_CHECK_MD_OP(exp, access_check);
1202         MD_COUNTER_INCREMENT(exp->exp_obd, access_check);
1203         rc = MDP(exp->exp_obd, access_check)(exp, id, request);
1204         RETURN(rc);
1205 }
1206
1207 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1208                                    ldlm_iterator_t it, void *data)
1209 {
1210         int rc;
1211         ENTRY;
1212         EXP_CHECK_MD_OP(exp, change_cbdata);
1213         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1214         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1215         RETURN(rc);
1216 }
1217
1218 static inline int md_change_cbdata_name(struct obd_export *exp,
1219                                         struct lustre_id *id, char *name,
1220                                         int namelen, struct lustre_id *id2,
1221                                         ldlm_iterator_t it, void *data)
1222 {
1223         int rc;
1224
1225         /* this seem to be needed only for lmv. */
1226         if (!MDP(exp->exp_obd, change_cbdata_name))
1227                 return 0;
1228
1229         ENTRY;
1230
1231         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1232         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1233                                                    id2, it, data);
1234         RETURN(rc);
1235 }
1236
1237 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1238                            struct obd_client_handle *och,
1239                            struct ptlrpc_request **request)
1240 {
1241         int rc;
1242         ENTRY;
1243         EXP_CHECK_MD_OP(exp, close);
1244         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1245         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1246         RETURN(rc);
1247 }
1248
1249 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1250                             const void *data, int datalen, int mode,
1251                             __u32 uid, __u32 gid, __u64 rdev,
1252                             struct ptlrpc_request **request)
1253 {
1254         int rc;
1255         ENTRY;
1256         EXP_CHECK_MD_OP(exp, create);
1257         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1258         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1259                                        uid, gid, rdev, request);
1260         RETURN(rc);
1261 }
1262
1263 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1264 {
1265         int rc;
1266         ENTRY;
1267         EXP_CHECK_MD_OP(exp, done_writing);
1268         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1269         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1270         RETURN(rc);
1271 }
1272
1273 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1274                              struct lookup_intent *it, int lock_mode,
1275                              struct mdc_op_data *data,
1276                              struct lustre_handle *lockh,
1277                              void *lmm, int lmmsize,
1278                              ldlm_completion_callback cb_completion,
1279                              ldlm_blocking_callback cb_blocking,
1280                              void *cb_data)
1281 {
1282         int rc;
1283         ENTRY;
1284         EXP_CHECK_MD_OP(exp, enqueue);
1285         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1286         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1287                                         data, lockh, lmm, lmmsize,
1288                                         cb_completion, cb_blocking,
1289                                         cb_data);
1290         RETURN(rc);
1291 }
1292
1293 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1294                                   char *filename, int namelen,
1295                                   __u64 valid, unsigned int ea_size,
1296                                   struct ptlrpc_request **request)
1297 {
1298         int rc;
1299         ENTRY;
1300         EXP_CHECK_MD_OP(exp, getattr_lock);
1301         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1302         rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1303                                              valid, ea_size, request);
1304         RETURN(rc);
1305 }
1306
1307 static inline int md_intent_lock(struct obd_export *exp,
1308                                  struct lustre_id *pid, const char *name,
1309                                  int len, void *lmm, int lmmsize,
1310                                  struct lustre_id *cid, struct lookup_intent *it,
1311                                  int flags, struct ptlrpc_request **reqp,
1312                                  ldlm_blocking_callback cb_blocking)
1313 {
1314         int rc;
1315         ENTRY;
1316         EXP_CHECK_MD_OP(exp, intent_lock);
1317         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1318         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len,
1319                                             lmm, lmmsize, cid, it, flags,
1320                                             reqp, cb_blocking);
1321         RETURN(rc);
1322 }
1323
1324 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1325                           struct ptlrpc_request **request)
1326 {
1327         int rc;
1328         ENTRY;
1329         EXP_CHECK_MD_OP(exp, link);
1330         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1331         rc = MDP(exp->exp_obd, link)(exp, data, request);
1332         RETURN(rc);
1333 }
1334
1335 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1336                             const char *old, int oldlen,
1337                             const char *new, int newlen,
1338                             struct ptlrpc_request **request)
1339 {
1340         int rc;
1341         ENTRY;
1342         EXP_CHECK_MD_OP(exp, rename);
1343         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1344         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1345                                        newlen, request);
1346         RETURN(rc);
1347 }
1348
1349 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1350                              struct iattr *iattr, void *ea, int ealen,
1351                              void *ea2, int ea2len, void *ea3, int ea3len,
1352                              struct ptlrpc_request **request)
1353 {
1354         int rc;
1355         ENTRY;
1356         EXP_CHECK_MD_OP(exp, setattr);
1357         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1358         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1359                                         ea2, ea2len, ea3, ea3len, request);
1360         RETURN(rc);
1361 }
1362
1363 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1364                                struct ptlrpc_request **request)
1365 {
1366         int rc;
1367         ENTRY;
1368         EXP_CHECK_MD_OP(exp, sync);
1369         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1370         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1371         RETURN(rc);
1372 }
1373
1374 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1375                               __u64 offset, struct page *page,
1376                               struct ptlrpc_request **request)
1377 {
1378         int rc;
1379         ENTRY;
1380         EXP_CHECK_MD_OP(exp, readpage);
1381         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1382         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1383         RETURN(rc);
1384 }
1385
1386 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1387                             struct ptlrpc_request **request)
1388 {
1389         int rc;
1390         ENTRY;
1391         EXP_CHECK_MD_OP(exp, unlink);
1392         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1393         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1394         RETURN(rc);
1395 }
1396
1397 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1398                                                  struct lustre_id *fid)
1399 {
1400         ENTRY;
1401         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1402                 return exp->exp_obd;
1403         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1404         return MDP(exp->exp_obd, get_real_obd)(exp, fid);
1405 }
1406
1407 static inline int md_valid_attrs(struct obd_export *exp,
1408                                  struct lustre_id *id)
1409 {
1410         ENTRY;
1411         EXP_CHECK_MD_OP(exp, valid_attrs);
1412         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1413         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1414 }
1415
1416 static inline int md_req2lustre_md(struct obd_export *exp,
1417                                    struct ptlrpc_request *req,
1418                                    unsigned int offset,
1419                                    struct obd_export *osc_exp,
1420                                    struct lustre_md *md)
1421 {
1422         ENTRY;
1423         EXP_CHECK_MD_OP(exp, req2lustre_md);
1424         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1425         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1426 }
1427
1428 static inline int md_set_open_replay_data(struct obd_export *exp,
1429                                           struct obd_client_handle *och,
1430                                           struct ptlrpc_request *open_req)
1431 {
1432         ENTRY;
1433         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1434         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1435         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1436 }
1437
1438 static inline int md_clear_open_replay_data(struct obd_export *exp,
1439                                             struct obd_client_handle *och)
1440 {
1441         ENTRY;
1442         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1443         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1444         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1445 }
1446
1447 static inline int md_store_inode_generation(struct obd_export *exp,
1448                                             struct ptlrpc_request *req,
1449                                             int reqoff, int repoff)
1450 {
1451         ENTRY;
1452         EXP_CHECK_MD_OP(exp, store_inode_generation);
1453         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1454         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1455                    reqoff, repoff);
1456 }
1457
1458 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1459                                    void *data)
1460 {
1461         ENTRY;
1462         EXP_CHECK_MD_OP(exp, set_lock_data);
1463         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1464         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1465 }
1466
1467 /* OBD Metadata Support */
1468
1469 extern int obd_init_caches(void);
1470 extern void obd_cleanup_caches(void);
1471
1472 /* support routines */
1473 extern kmem_cache_t *obdo_cachep;
1474 static inline struct obdo *obdo_alloc(void)
1475 {
1476         struct obdo *oa;
1477
1478         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1479                        sizeof(*oa));
1480         return oa;
1481 }
1482
1483 static inline void obdo_free(struct obdo *oa)
1484 {
1485         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1486 }
1487
1488 static inline void obdo2id(struct lustre_id *id,
1489                            struct obdo *oa)
1490 {
1491         LASSERT(oa && id);
1492         id_ino(id) = oa->o_id;
1493         id_fid(id) = oa->o_fid;
1494         id_group(id) = oa->o_mds;
1495         id_gen(id) = oa->o_generation;
1496 }
1497
1498 static inline void id2obdo(struct obdo *oa,
1499                            struct lustre_id *id)
1500 {
1501         LASSERT(oa && id);
1502         oa->o_id = id_ino(id);
1503         oa->o_fid = id_fid(id);
1504         oa->o_mds = id_group(id);
1505         oa->o_generation = id_gen(id);
1506 }
1507
1508 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1509 #define to_kdev_t(dev) dev
1510 #define kdev_t_to_nr(dev) dev
1511 #endif
1512
1513 /* I'm as embarrassed about this as you are.
1514  *
1515  * <shaver> // XXX do not look into _superhack with remaining eye
1516  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1517 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1518 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1519
1520 /* sysctl.c */
1521 extern void obd_sysctl_init (void);
1522 extern void obd_sysctl_clean (void);
1523
1524 /* uuid.c  */
1525 typedef __u8 class_uuid_t[16];
1526 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1527 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1528
1529 /* lustre_peer.c    */
1530 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1531 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1532 int class_del_uuid (char *uuid);
1533 void class_init_uuidlist(void);
1534 void class_exit_uuidlist(void);
1535
1536 /* mea.c */
1537 int mea_name2idx(struct mea *mea, char *name, int namelen);
1538 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1539
1540 #endif /* __LINUX_OBD_CLASS_H */