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                              void *acl, int acl_size,
 499                              struct lov_stripe_md **ea,
 500                              struct obd_trans_info *oti)
 501 {
 502         int rc;
 503         ENTRY;
 504
 505         EXP_CHECK_OP(exp, create);
 506         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 507
 508         rc = OBP(exp->exp_obd, create)(exp, obdo, acl, acl_size, ea, oti);
 509         RETURN(rc);
 510 }
 511
 512 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 513                               struct lov_stripe_md *ea,
 514                               struct obd_trans_info *oti)
 515 {
 516         int rc;
 517         ENTRY;
 518
 519         EXP_CHECK_OP(exp, destroy);
 520         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 521
 522         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 523         RETURN(rc);
 524 }
 525
 526 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 527                               struct lov_stripe_md *ea)
 528 {
 529         int rc;
 530         ENTRY;
 531
 532         EXP_CHECK_OP(exp, getattr);
 533         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 534
 535         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 536         RETURN(rc);
 537 }
 538
 539 static inline int obd_getattr_async(struct obd_export *exp,
 540                                     struct obdo *obdo, struct lov_stripe_md *ea,
 541                                     struct ptlrpc_request_set *set)
 542 {
 543         int rc;
 544         ENTRY;
 545
 546         EXP_CHECK_OP(exp, getattr);
 547         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 548
 549         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 550         RETURN(rc);
 551 }
 552
 553 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 554                               struct lov_stripe_md *ea,
 555                               struct obd_trans_info *oti)
 556 {
 557         int rc;
 558         ENTRY;
 559
 560         EXP_CHECK_OP(exp, setattr);
 561         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 562
 563         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti);
 564         RETURN(rc);
 565 }
 566 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 567                                int priority)
 568 {
 569         struct obd_device *obd = imp->imp_obd;
 570         int rc;
 571         ENTRY;
 572
 573         OBD_CHECK_DEV_ACTIVE(obd);
 574         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 575         OBD_COUNTER_INCREMENT(obd, add_conn);
 576
 577         rc = OBP(obd, add_conn)(imp, uuid, priority);
 578         RETURN(rc);
 579 }
 580
 581 static inline int obd_del_conn(struct obd_import *imp,
 582                                struct obd_uuid *uuid)
 583 {
 584         struct obd_device *obd = imp->imp_obd;
 585         int rc;
 586         ENTRY;
 587
 588         OBD_CHECK_DEV_ACTIVE(obd);
 589         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 590         OBD_COUNTER_INCREMENT(obd, del_conn);
 591
 592         rc = OBP(obd, del_conn)(imp, uuid);
 593         RETURN(rc);
 594 }
 595
 596
 597 static inline int obd_connect(struct lustre_handle *conn,
 598                               struct obd_device *obd,
 599                               struct obd_uuid *cluuid,
 600                               struct obd_connect_data *data,
 601                               unsigned long flags)
 602 {
 603         int rc;
 604         ENTRY;
 605
 606         OBD_CHECK_DEV_ACTIVE(obd);
 607         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 608         OBD_COUNTER_INCREMENT(obd, connect);
 609
 610         rc = OBP(obd, connect)(conn, obd, cluuid, data, flags);
 611         RETURN(rc);
 612 }
 613
 614 static inline int obd_connect_post(struct obd_export *exp,
 615                                    unsigned initial,
 616                                    unsigned long flags)
 617 {
 618         int rc;
 619         ENTRY;
 620
 621         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 622         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 623                 RETURN(0);
 624         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 625         rc = OBP(exp->exp_obd, connect_post)(exp, initial, flags);
 626         RETURN(rc);
 627 }
 628
 629 static inline int obd_disconnect(struct obd_export *exp,
 630                                  unsigned long flags)
 631 {
 632         int rc;
 633         ENTRY;
 634
 635         EXP_CHECK_OP(exp, disconnect);
 636         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 637
 638         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 639         RETURN(rc);
 640 }
 641
 642 static inline int obd_getready(struct obd_export *exp)
 643 {
 644         int rc;
 645         ENTRY;
 646
 647         if (!OBP(exp->exp_obd, getready))
 648                 RETURN(0);
 649         rc = OBP(exp->exp_obd, getready)(exp);
 650         RETURN(rc);
 651 }
 652
 653 static inline int obd_init_export(struct obd_export *exp)
 654 {
 655         int rc = 0;
 656
 657         ENTRY;
 658         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 659             OBP((exp)->exp_obd, init_export))
 660                 rc = OBP(exp->exp_obd, init_export)(exp);
 661         RETURN(rc);
 662 }
 663
 664 static inline int obd_destroy_export(struct obd_export *exp)
 665 {
 666         ENTRY;
 667         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 668             OBP((exp)->exp_obd, destroy_export))
 669                 OBP(exp->exp_obd, destroy_export)(exp);
 670         RETURN(0);
 671 }
 672
 673 static inline struct dentry *
 674 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 675                    __u32 gen, __u64 gr)
 676 {
 677         LASSERT(exp->exp_obd);
 678
 679         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 680                               ino, gen, gr, exp->exp_obd);
 681 }
 682
 683 #ifndef time_before
 684 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 685 #endif
 686
 687 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 688  * If the cache is older than @max_age we will get a new value from the
 689  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 690 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 691                              unsigned long max_age)
 692 {
 693         int rc = 0;
 694         ENTRY;
 695
 696         if (obd == NULL)
 697                 RETURN(-EINVAL);
 698
 699         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 700         OBD_COUNTER_INCREMENT(obd, statfs);
 701
 702         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 703         if (time_before(obd->obd_osfs_age, max_age)) {
 704                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 705                 if (rc == 0) {
 706                         spin_lock(&obd->obd_osfs_lock);
 707                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 708                         obd->obd_osfs_age = jiffies;
 709                         spin_unlock(&obd->obd_osfs_lock);
 710                 }
 711         } else {
 712                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 713                 spin_lock(&obd->obd_osfs_lock);
 714                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 715                 spin_unlock(&obd->obd_osfs_lock);
 716         }
 717         RETURN(rc);
 718 }
 719
 720 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 721                            struct lov_stripe_md *ea, obd_size start,
 722                            obd_size end)
 723 {
 724         int rc;
 725         ENTRY;
 726
 727         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 728         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 729
 730         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 731         RETURN(rc);
 732 }
 733
 734 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 735                             struct lov_stripe_md *ea, obd_size start,
 736                             obd_size end, struct obd_trans_info *oti)
 737 {
 738         int rc;
 739         ENTRY;
 740
 741         EXP_CHECK_OP(exp, punch);
 742         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 743
 744         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 745         RETURN(rc);
 746 }
 747
 748 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 749                           struct lov_stripe_md *ea, obd_count oa_bufs,
 750                           struct brw_page *pg, struct obd_trans_info *oti)
 751 {
 752         int rc;
 753         ENTRY;
 754
 755         EXP_CHECK_OP(exp, brw);
 756         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 757
 758         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 759                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 760                        "or OBD_BRW_CHECK\n");
 761                 LBUG();
 762         }
 763
 764         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 765         RETURN(rc);
 766 }
 767
 768 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 769                                 struct obdo *oa, struct lov_stripe_md *ea,
 770                                 obd_count oa_bufs, struct brw_page *pg,
 771                                 struct ptlrpc_request_set *set,
 772                                 struct obd_trans_info *oti)
 773 {
 774         int rc;
 775         ENTRY;
 776
 777         EXP_CHECK_OP(exp, brw_async);
 778         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 779
 780         if (!(cmd & OBD_BRW_RWMASK)) {
 781                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 782                 LBUG();
 783         }
 784
 785         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 786                                           oti);
 787         RETURN(rc);
 788 }
 789
 790 static inline int obd_prep_async_page(struct obd_export *exp,
 791                                       struct lov_stripe_md *lsm,
 792                                       struct lov_oinfo *loi,
 793                                       struct page *page, obd_off offset,
 794                                       struct obd_async_page_ops *ops,
 795                                       void *data, void **res)
 796 {
 797         int ret;
 798         ENTRY;
 799
 800         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 801         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 802
 803         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 804                                                  ops, data, res);
 805         RETURN(ret);
 806 }
 807
 808 static inline int obd_queue_async_io(struct obd_export *exp,
 809                                      struct lov_stripe_md *lsm,
 810                                      struct lov_oinfo *loi, void *cookie,
 811                                      int cmd, obd_off off, int count,
 812                                      obd_flags brw_flags, obd_flags async_flags)
 813 {
 814         int rc;
 815         ENTRY;
 816
 817         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 818         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 819         LASSERT(cmd & OBD_BRW_RWMASK);
 820
 821         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 822                                                count, brw_flags, async_flags);
 823         RETURN(rc);
 824 }
 825
 826 static inline int obd_set_async_flags(struct obd_export *exp,
 827                                       struct lov_stripe_md *lsm,
 828                                       struct lov_oinfo *loi, void *cookie,
 829                                       obd_flags async_flags)
 830 {
 831         int rc;
 832         ENTRY;
 833
 834         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 835         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 836
 837         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 838                                                 async_flags);
 839         RETURN(rc);
 840 }
 841
 842 static inline int obd_queue_group_io(struct obd_export *exp,
 843                                      struct lov_stripe_md *lsm,
 844                                      struct lov_oinfo *loi,
 845                                      struct obd_io_group *oig,
 846                                      void *cookie, int cmd, obd_off off,
 847                                      int count, obd_flags brw_flags,
 848                                      obd_flags async_flags)
 849 {
 850         int rc;
 851         ENTRY;
 852
 853         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 854         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 855         LASSERT(cmd & OBD_BRW_RWMASK);
 856
 857         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 858                                                cmd, off, count, brw_flags,
 859                                                async_flags);
 860         RETURN(rc);
 861 }
 862
 863 static inline int obd_trigger_group_io(struct obd_export *exp,
 864                                        struct lov_stripe_md *lsm,
 865                                        struct lov_oinfo *loi,
 866                                        struct obd_io_group *oig)
 867 {
 868         int rc;
 869         ENTRY;
 870
 871         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 872         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 873
 874         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 875         RETURN(rc);
 876 }
 877
 878 static inline int obd_teardown_async_page(struct obd_export *exp,
 879                                           struct lov_stripe_md *lsm,
 880                                           struct lov_oinfo *loi, void *cookie)
 881 {
 882         int rc;
 883         ENTRY;
 884
 885         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 886         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 887
 888         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 889         RETURN(rc);
 890 }
 891
 892 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 893                              int objcount, struct obd_ioobj *obj,
 894                              int niocount, struct niobuf_remote *remote,
 895                              struct niobuf_local *local,
 896                              struct obd_trans_info *oti)
 897 {
 898         int rc;
 899         ENTRY;
 900
 901         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 902         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 903
 904         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 905                                        remote, local, oti);
 906         RETURN(rc);
 907 }
 908
 909 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 910                                int objcount, struct obd_ioobj *obj,
 911                                int niocount, struct niobuf_local *local,
 912                                struct obd_trans_info *oti, int rc)
 913 {
 914         ENTRY;
 915
 916         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 917         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 918
 919         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 920                                          local, oti, rc);
 921         RETURN(rc);
 922 }
 923
 924 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 925                             int objcount,struct niobuf_remote *rnb)
 926 {
 927         int rc;
 928         ENTRY;
 929
 930         /* there are cases when write_extents is not implemented. */
 931         if (!OBP(exp->exp_obd, do_cow))
 932                 RETURN(0);
 933
 934         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 935
 936         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 937
 938         RETURN(rc);
 939 }
 940
 941 static inline int obd_write_extents(struct obd_export *exp,
 942                                     struct obd_ioobj *obj,
 943                                     int objcount, int niocount,
 944                                     struct niobuf_local *local,
 945                                     int rc)
 946 {
 947         ENTRY;
 948
 949         /* there are cases when write_extents is not implemented. */
 950         if (!OBP(exp->exp_obd, write_extents))
 951                 RETURN(0);
 952
 953         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
 954
 955         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
 956                                               local, rc);
 957         RETURN(rc);
 958 }
 959
 960 static inline int obd_adjust_kms(struct obd_export *exp,
 961                                  struct lov_stripe_md *lsm,
 962                                  obd_off size, int shrink)
 963 {
 964         int rc;
 965         ENTRY;
 966
 967         OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
 968         OBD_COUNTER_INCREMENT(exp->exp_obd, adjust_kms);
 969
 970         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
 971         RETURN(rc);
 972 }
 973
 974 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
 975                                 int len, void *karg, void *uarg)
 976 {
 977         int rc;
 978         ENTRY;
 979
 980         EXP_CHECK_OP(exp, iocontrol);
 981         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
 982
 983         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
 984         RETURN(rc);
 985 }
 986
 987 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
 988                               __u32 type, ldlm_policy_data_t *policy,
 989                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
 990                               void *gl_cb, void *data, __u32 lvb_len,
 991                               void *lvb_swabber, struct lustre_handle *lockh)
 992 {
 993         int rc;
 994         ENTRY;
 995
 996         EXP_CHECK_OP(exp, enqueue);
 997         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
 998
 999         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
1000                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
1001                                         lvb_swabber, lockh);
1002         RETURN(rc);
1003 }
1004
1005 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1006                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1007                             int *flags, void *data, struct lustre_handle *lockh)
1008 {
1009         int rc;
1010         ENTRY;
1011
1012         EXP_CHECK_OP(exp, match);
1013         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1014
1015         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1016                                       lockh);
1017         RETURN(rc);
1018 }
1019
1020 static inline int obd_change_cbdata(struct obd_export *exp,
1021                                     struct lov_stripe_md *lsm,
1022                                     ldlm_iterator_t it, void *data)
1023 {
1024         int rc;
1025         ENTRY;
1026
1027         EXP_CHECK_OP(exp, change_cbdata);
1028         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1029
1030         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1031         RETURN(rc);
1032 }
1033
1034 static inline int obd_cancel(struct obd_export *exp,
1035                              struct lov_stripe_md *ea, __u32 mode,
1036                              struct lustre_handle *lockh)
1037 {
1038         int rc;
1039         ENTRY;
1040
1041         EXP_CHECK_OP(exp, cancel);
1042         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1043
1044         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1045         RETURN(rc);
1046 }
1047
1048 static inline int obd_cancel_unused(struct obd_export *exp,
1049                                     struct lov_stripe_md *ea, int flags,
1050                                     void *opaque)
1051 {
1052         int rc;
1053         ENTRY;
1054
1055         EXP_CHECK_OP(exp, cancel_unused);
1056         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1057
1058         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1059         RETURN(rc);
1060 }
1061
1062
1063 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1064                                  struct obdo *oa,
1065                                  int objcount, struct obd_ioobj *obj,
1066                                  int niocount, struct niobuf_remote *remote)
1067 {
1068         int rc;
1069
1070         EXP_CHECK_OP(exp, preprw);
1071         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1072
1073         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1074                                            niocount, remote);
1075         class_export_put(exp);
1076         return(rc);
1077 }
1078
1079 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1080                           int type, struct obd_client_handle *handle, int flag)
1081 {
1082         int rc;
1083
1084         EXP_CHECK_OP(exp, pin);
1085         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1086
1087         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1088         return(rc);
1089 }
1090
1091 static inline int obd_unpin(struct obd_export *exp,
1092                             struct obd_client_handle *handle, int flag)
1093 {
1094         int rc;
1095
1096         EXP_CHECK_OP(exp, unpin);
1097         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1098
1099         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1100         return(rc);
1101 }
1102
1103
1104 static inline void obd_import_event(struct obd_device *obd,
1105                                     struct obd_import *imp,
1106                                     enum obd_import_event event)
1107 {
1108         if (!obd) {
1109                 CERROR("NULL device\n");
1110                 EXIT;
1111                 return;
1112         }
1113         if (obd->obd_set_up && OBP(obd, import_event)) {
1114                 OBD_COUNTER_INCREMENT(obd, import_event);
1115                 OBP(obd, import_event)(obd, imp, event);
1116         }
1117 }
1118
1119 static inline int obd_llog_connect(struct obd_export *exp,
1120                                         struct llogd_conn_body *body)
1121 {
1122         ENTRY;
1123         EXP_CHECK_OP(exp, llog_connect);
1124         return OBP(exp->exp_obd, llog_connect)(exp, body);
1125 }
1126
1127 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1128                              int active, void *data)
1129 {
1130         OBD_CHECK_DEV(obd);
1131         if (!obd->obd_set_up) {
1132                 CERROR("obd %s not set up\n", obd->obd_name);
1133                 return -EINVAL;
1134         }
1135
1136         if (!OBP(obd, notify)) {
1137                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1138                 return -ENOSYS;
1139         }
1140
1141         OBD_COUNTER_INCREMENT(obd, notify);
1142         return OBP(obd, notify)(obd, watched, active, data);
1143 }
1144
1145 static inline int obd_register_observer(struct obd_device *obd,
1146                                         struct obd_device *observer)
1147 {
1148         ENTRY;
1149         OBD_CHECK_DEV(obd);
1150         if (obd->obd_observer && observer)
1151                 RETURN(-EALREADY);
1152         obd->obd_observer = observer;
1153         RETURN(0);
1154 }
1155
1156 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1157 {
1158         int rc;
1159         ENTRY;
1160         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1161         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1162         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1163         RETURN(rc);
1164 }
1165
1166 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1167 {
1168         int rc;
1169
1170         EXP_CHECK_MD_OP(exp, getstatus);
1171         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1172         rc = MDP(exp->exp_obd, getstatus)(exp, id);
1173         RETURN(rc);
1174 }
1175
1176 static inline int md_delete_inode(struct obd_export *exp,
1177                                   struct lustre_id *id)
1178 {
1179         int rc;
1180         ENTRY;
1181
1182         if (MDP(exp->exp_obd, delete_inode) == NULL)
1183                 RETURN(0);
1184
1185         MD_COUNTER_INCREMENT(exp->exp_obd, delete_inode);
1186         rc = MDP(exp->exp_obd, delete_inode)(exp, id);
1187         RETURN(rc);
1188 }
1189
1190 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1191                              __u64 valid, const char *ea_name, int ea_namelen,
1192                              unsigned int ea_size, struct ptlrpc_request **request)
1193 {
1194         int rc;
1195         ENTRY;
1196         EXP_CHECK_MD_OP(exp, getattr);
1197         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1198         rc = MDP(exp->exp_obd, getattr)(exp, id, valid, ea_name, ea_namelen, ea_size, request);
1199         RETURN(rc);
1200 }
1201
1202 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1203                                    ldlm_iterator_t it, void *data)
1204 {
1205         int rc;
1206         ENTRY;
1207         EXP_CHECK_MD_OP(exp, change_cbdata);
1208         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1209         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1210         RETURN(rc);
1211 }
1212
1213 static inline int md_change_cbdata_name(struct obd_export *exp,
1214                                         struct lustre_id *id, char *name,
1215                                         int namelen, struct lustre_id *id2,
1216                                         ldlm_iterator_t it, void *data)
1217 {
1218         int rc;
1219
1220         /* this seem to be needed only for lmv. */
1221         if (!MDP(exp->exp_obd, change_cbdata_name))
1222                 return 0;
1223
1224         ENTRY;
1225
1226         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1227         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1228                                                    id2, it, data);
1229         RETURN(rc);
1230 }
1231
1232 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1233                            struct obd_client_handle *och,
1234                            struct ptlrpc_request **request)
1235 {
1236         int rc;
1237         ENTRY;
1238         EXP_CHECK_MD_OP(exp, close);
1239         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1240         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1241         RETURN(rc);
1242 }
1243
1244 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1245                             const void *data, int datalen, int mode,
1246                             __u32 uid, __u32 gid, __u64 rdev,
1247                             struct ptlrpc_request **request)
1248 {
1249         int rc;
1250         ENTRY;
1251         EXP_CHECK_MD_OP(exp, create);
1252         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1253         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1254                                        uid, gid, rdev, request);
1255         RETURN(rc);
1256 }
1257
1258 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1259 {
1260         int rc;
1261         ENTRY;
1262         EXP_CHECK_MD_OP(exp, done_writing);
1263         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1264         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1265         RETURN(rc);
1266 }
1267
1268 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1269                              struct lookup_intent *it, int lock_mode,
1270                              struct mdc_op_data *data,
1271                              struct lustre_handle *lockh,
1272                              void *lmm, int lmmsize,
1273                              ldlm_completion_callback cb_completion,
1274                              ldlm_blocking_callback cb_blocking,
1275                              void *cb_data)
1276 {
1277         int rc;
1278         ENTRY;
1279         EXP_CHECK_MD_OP(exp, enqueue);
1280         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1281         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1282                                         data, lockh, lmm, lmmsize,
1283                                         cb_completion, cb_blocking,
1284                                         cb_data);
1285         RETURN(rc);
1286 }
1287
1288 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1289                                   char *filename, int namelen,
1290                                   __u64 valid, unsigned int ea_size,
1291                                   struct ptlrpc_request **request)
1292 {
1293         int rc;
1294         ENTRY;
1295         EXP_CHECK_MD_OP(exp, getattr_lock);
1296         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1297         rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1298                                              valid, ea_size, request);
1299         RETURN(rc);
1300 }
1301
1302 static inline int md_intent_lock(struct obd_export *exp,
1303                                  struct lustre_id *pid, const char *name,
1304                                  int len, void *lmm, int lmmsize,
1305                                  struct lustre_id *cid, struct lookup_intent *it,
1306                                  int flags, struct ptlrpc_request **reqp,
1307                                  ldlm_blocking_callback cb_blocking)
1308 {
1309         int rc;
1310         ENTRY;
1311         EXP_CHECK_MD_OP(exp, intent_lock);
1312         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1313         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len,
1314                                             lmm, lmmsize, cid, it, flags,
1315                                             reqp, cb_blocking);
1316         RETURN(rc);
1317 }
1318
1319 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1320                           struct ptlrpc_request **request)
1321 {
1322         int rc;
1323         ENTRY;
1324         EXP_CHECK_MD_OP(exp, link);
1325         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1326         rc = MDP(exp->exp_obd, link)(exp, data, request);
1327         RETURN(rc);
1328 }
1329
1330 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1331                             const char *old, int oldlen,
1332                             const char *new, int newlen,
1333                             struct ptlrpc_request **request)
1334 {
1335         int rc;
1336         ENTRY;
1337         EXP_CHECK_MD_OP(exp, rename);
1338         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1339         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1340                                        newlen, request);
1341         RETURN(rc);
1342 }
1343
1344 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1345                              struct iattr *iattr, void *ea, int ealen,
1346                              void *ea2, int ea2len,
1347                              struct ptlrpc_request **request)
1348 {
1349         int rc;
1350         ENTRY;
1351         EXP_CHECK_MD_OP(exp, setattr);
1352         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1353         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1354                                         ea2, ea2len, request);
1355         RETURN(rc);
1356 }
1357
1358 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1359                                struct ptlrpc_request **request)
1360 {
1361         int rc;
1362         ENTRY;
1363         EXP_CHECK_MD_OP(exp, sync);
1364         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1365         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1366         RETURN(rc);
1367 }
1368
1369 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1370                               __u64 offset, struct page *page,
1371                               struct ptlrpc_request **request)
1372 {
1373         int rc;
1374         ENTRY;
1375         EXP_CHECK_MD_OP(exp, readpage);
1376         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1377         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1378         RETURN(rc);
1379 }
1380
1381 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1382                             struct ptlrpc_request **request)
1383 {
1384         int rc;
1385         ENTRY;
1386         EXP_CHECK_MD_OP(exp, unlink);
1387         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1388         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1389         RETURN(rc);
1390 }
1391
1392 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1393                                                  struct lustre_id *fid)
1394 {
1395         ENTRY;
1396         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1397                 return exp->exp_obd;
1398         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1399         return MDP(exp->exp_obd, get_real_obd)(exp, fid);
1400 }
1401
1402 static inline int md_valid_attrs(struct obd_export *exp,
1403                                  struct lustre_id *id)
1404 {
1405         ENTRY;
1406         EXP_CHECK_MD_OP(exp, valid_attrs);
1407         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1408         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1409 }
1410
1411 static inline int md_req2lustre_md(struct obd_export *exp,
1412                                    struct ptlrpc_request *req,
1413                                    unsigned int offset,
1414                                    struct obd_export *osc_exp,
1415                                    struct lustre_md *md)
1416 {
1417         ENTRY;
1418         EXP_CHECK_MD_OP(exp, req2lustre_md);
1419         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1420         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1421 }
1422
1423 static inline int md_set_open_replay_data(struct obd_export *exp,
1424                                           struct obd_client_handle *och,
1425                                           struct ptlrpc_request *open_req)
1426 {
1427         ENTRY;
1428         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1429         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1430         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1431 }
1432
1433 static inline int md_clear_open_replay_data(struct obd_export *exp,
1434                                             struct obd_client_handle *och)
1435 {
1436         ENTRY;
1437         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1438         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1439         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1440 }
1441
1442 static inline int md_store_inode_generation(struct obd_export *exp,
1443                                             struct ptlrpc_request *req,
1444                                             int reqoff, int repoff)
1445 {
1446         ENTRY;
1447         EXP_CHECK_MD_OP(exp, store_inode_generation);
1448         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1449         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1450                    reqoff, repoff);
1451 }
1452
1453 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1454                                    void *data)
1455 {
1456         ENTRY;
1457         EXP_CHECK_MD_OP(exp, set_lock_data);
1458         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1459         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1460 }
1461
1462 /* OBD Metadata Support */
1463
1464 extern int obd_init_caches(void);
1465 extern void obd_cleanup_caches(void);
1466
1467 /* support routines */
1468 extern kmem_cache_t *obdo_cachep;
1469 static inline struct obdo *obdo_alloc(void)
1470 {
1471         struct obdo *oa;
1472
1473         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1474                        sizeof(*oa));
1475         return oa;
1476 }
1477
1478 static inline void obdo_free(struct obdo *oa)
1479 {
1480         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1481 }
1482
1483 static inline void obdo2id(struct lustre_id *id,
1484                            struct obdo *oa)
1485 {
1486         LASSERT(oa && id);
1487         id_ino(id) = oa->o_id;
1488         id_fid(id) = oa->o_fid;
1489         id_group(id) = oa->o_mds;
1490         id_gen(id) = oa->o_generation;
1491 }
1492
1493 static inline void id2obdo(struct obdo *oa,
1494                            struct lustre_id *id)
1495 {
1496         LASSERT(oa && id);
1497         oa->o_id = id_ino(id);
1498         oa->o_fid = id_fid(id);
1499         oa->o_mds = id_group(id);
1500         oa->o_generation = id_gen(id);
1501 }
1502
1503 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1504 #define to_kdev_t(dev) dev
1505 #define kdev_t_to_nr(dev) dev
1506 #endif
1507
1508 /* I'm as embarrassed about this as you are.
1509  *
1510  * <shaver> // XXX do not look into _superhack with remaining eye
1511  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1512 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1513 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1514
1515 /* sysctl.c */
1516 extern void obd_sysctl_init (void);
1517 extern void obd_sysctl_clean (void);
1518
1519 /* uuid.c  */
1520 typedef __u8 class_uuid_t[16];
1521 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1522 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1523
1524 /* lustre_peer.c    */
1525 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1526 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1527 int class_del_uuid (char *uuid);
1528 void class_init_uuidlist(void);
1529 void class_exit_uuidlist(void);
1530
1531 /* mea.c */
1532 int mea_name2idx(struct mea *mea, char *name, int namelen);
1533 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1534
1535 #endif /* __LINUX_OBD_CLASS_H */