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