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[deliverable/linux.git] / drivers / staging / lustre / lustre / include / obd_class.h
1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19 *
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2011, 2015, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 */
36 #ifndef __CLASS_OBD_H
37 #define __CLASS_OBD_H
38
39 #include "obd_support.h"
40 #include "lustre_import.h"
41 #include "lustre_net.h"
42 #include "obd.h"
43 #include "lustre_lib.h"
44 #include "lustre/lustre_idl.h"
45 #include "lprocfs_status.h"
46
47 #define OBD_STATFS_NODELAY 0x0001 /* requests should be send without delay
48 * and resends for avoid deadlocks */
49 #define OBD_STATFS_FROM_CACHE 0x0002 /* the statfs callback should not update
50 * obd_osfs_age */
51 #define OBD_STATFS_PTLRPCD 0x0004 /* requests will be sent via ptlrpcd
52 * instead of a specific set. This
53 * means that we cannot rely on the set
54 * interpret routine to be called.
55 * lov_statfs_fini() must thus be called
56 * by the request interpret routine */
57 #define OBD_STATFS_FOR_MDT0 0x0008 /* The statfs is only for retrieving
58 * information from MDT0. */
59 #define OBD_FL_PUNCH 0x00000001 /* To indicate it is punch operation */
60
61 /* OBD Device Declarations */
62 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
63 extern rwlock_t obd_dev_lock;
64
65 /* OBD Operations Declarations */
66 struct obd_device *class_exp2obd(struct obd_export *);
67 int class_handle_ioctl(unsigned int cmd, unsigned long arg);
68 int lustre_get_jobid(char *jobid);
69
70 struct lu_device_type;
71
72 /* genops.c */
73 extern struct list_head obd_types;
74 struct obd_export *class_conn2export(struct lustre_handle *);
75 int class_register_type(struct obd_ops *, struct md_ops *,
76 const char *nm, struct lu_device_type *ldt);
77 int class_unregister_type(const char *nm);
78
79 struct obd_device *class_newdev(const char *type_name, const char *name);
80 void class_release_dev(struct obd_device *obd);
81
82 int class_name2dev(const char *name);
83 struct obd_device *class_name2obd(const char *name);
84 int class_uuid2dev(struct obd_uuid *uuid);
85 struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid,
86 const char *typ_name,
87 struct obd_uuid *grp_uuid);
88 struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid,
89 int *next);
90 struct obd_device *class_num2obd(int num);
91
92 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
93
94 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
95
96 int obd_zombie_impexp_init(void);
97 void obd_zombie_impexp_stop(void);
98 void obd_zombie_barrier(void);
99
100 struct llog_handle;
101 struct llog_rec_hdr;
102 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
103 struct llog_rec_hdr *, void *);
104 /* obd_config.c */
105 int class_process_config(struct lustre_cfg *lcfg);
106 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
107 struct lustre_cfg *lcfg, void *data);
108 struct obd_device *class_incref(struct obd_device *obd,
109 const char *scope, const void *source);
110 void class_decref(struct obd_device *obd,
111 const char *scope, const void *source);
112 int class_config_llog_handler(const struct lu_env *env,
113 struct llog_handle *handle,
114 struct llog_rec_hdr *rec, void *data);
115 int class_add_uuid(const char *uuid, __u64 nid);
116
117 /*obdecho*/
118 void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
119
120 #define CFG_F_START 0x01 /* Set when we start updating from a log */
121 #define CFG_F_MARKER 0x02 /* We are within a maker */
122 #define CFG_F_SKIP 0x04 /* We should ignore this cfg command */
123 #define CFG_F_COMPAT146 0x08 /* Allow old-style logs */
124 #define CFG_F_EXCLUDE 0x10 /* OST exclusion list */
125
126 /* Passed as data param to class_config_parse_llog */
127 struct config_llog_instance {
128 char *cfg_obdname;
129 void *cfg_instance;
130 struct super_block *cfg_sb;
131 struct obd_uuid cfg_uuid;
132 llog_cb_t cfg_callback;
133 int cfg_last_idx; /* for partial llog processing */
134 int cfg_flags;
135 };
136
137 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
138 char *name, struct config_llog_instance *cfg);
139 enum {
140 CONFIG_T_CONFIG = 0,
141 CONFIG_T_SPTLRPC = 1,
142 CONFIG_T_RECOVER = 2,
143 CONFIG_T_PARAMS = 3,
144 CONFIG_T_MAX = 4
145 };
146
147 #define PARAMS_FILENAME "params"
148 #define LCTL_UPCALL "lctl"
149
150 /* list of active configuration logs */
151 struct config_llog_data {
152 struct ldlm_res_id cld_resid;
153 struct config_llog_instance cld_cfg;
154 struct list_head cld_list_chain;
155 atomic_t cld_refcount;
156 struct config_llog_data *cld_sptlrpc;/* depended sptlrpc log */
157 struct config_llog_data *cld_params; /* common parameters log */
158 struct config_llog_data *cld_recover;/* imperative recover log */
159 struct obd_export *cld_mgcexp;
160 struct mutex cld_lock;
161 int cld_type;
162 unsigned int cld_stopping:1, /* we were told to stop
163 * watching */
164 cld_lostlock:1; /* lock not requeued */
165 char cld_logname[0];
166 };
167
168 struct lustre_profile {
169 struct list_head lp_list;
170 char *lp_profile;
171 char *lp_dt;
172 char *lp_md;
173 };
174
175 struct lustre_profile *class_get_profile(const char *prof);
176 void class_del_profile(const char *prof);
177 void class_del_profiles(void);
178
179 #if LUSTRE_TRACKS_LOCK_EXP_REFS
180
181 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
182 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
183 extern void (*class_export_dump_hook)(struct obd_export *);
184
185 #else
186
187 #define __class_export_add_lock_ref(exp, lock) do {} while (0)
188 #define __class_export_del_lock_ref(exp, lock) do {} while (0)
189
190 #endif
191
192 /* genops.c */
193 struct obd_export *class_export_get(struct obd_export *exp);
194 void class_export_put(struct obd_export *exp);
195 struct obd_export *class_new_export(struct obd_device *obddev,
196 struct obd_uuid *cluuid);
197 void class_unlink_export(struct obd_export *exp);
198
199 struct obd_import *class_import_get(struct obd_import *);
200 void class_import_put(struct obd_import *);
201 struct obd_import *class_new_import(struct obd_device *obd);
202 void class_destroy_import(struct obd_import *exp);
203
204 void class_put_type(struct obd_type *type);
205 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
206 struct obd_uuid *cluuid);
207 int class_disconnect(struct obd_export *exp);
208 void class_fail_export(struct obd_export *exp);
209 int class_manual_cleanup(struct obd_device *obd);
210
211 static inline void class_export_rpc_inc(struct obd_export *exp)
212 {
213 atomic_inc(&(exp)->exp_rpc_count);
214 CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",
215 (exp), atomic_read(&(exp)->exp_rpc_count));
216 }
217
218 static inline void class_export_rpc_dec(struct obd_export *exp)
219 {
220 LASSERT_ATOMIC_POS(&exp->exp_rpc_count);
221 atomic_dec(&(exp)->exp_rpc_count);
222 CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",
223 (exp), atomic_read(&(exp)->exp_rpc_count));
224 }
225
226 static inline struct obd_export *class_export_lock_get(struct obd_export *exp,
227 struct ldlm_lock *lock)
228 {
229 atomic_inc(&(exp)->exp_locks_count);
230 __class_export_add_lock_ref(exp, lock);
231 CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n",
232 (exp), atomic_read(&(exp)->exp_locks_count));
233 return class_export_get(exp);
234 }
235
236 static inline void class_export_lock_put(struct obd_export *exp,
237 struct ldlm_lock *lock)
238 {
239 LASSERT_ATOMIC_POS(&exp->exp_locks_count);
240 atomic_dec(&(exp)->exp_locks_count);
241 __class_export_del_lock_ref(exp, lock);
242 CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n",
243 (exp), atomic_read(&(exp)->exp_locks_count));
244 class_export_put(exp);
245 }
246
247 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
248 {
249 return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
250 (obd->obd_force ? OBD_OPT_FORCE : 0) |
251 0);
252 }
253
254 static inline int lprocfs_climp_check(struct obd_device *obd)
255 {
256 down_read(&(obd)->u.cli.cl_sem);
257 if (!(obd)->u.cli.cl_import) {
258 up_read(&(obd)->u.cli.cl_sem);
259 return -ENODEV;
260 }
261 return 0;
262 }
263
264 struct inode;
265 struct lu_attr;
266 struct obdo;
267 void obdo_refresh_inode(struct inode *dst, struct obdo *src, u32 valid);
268
269 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
270 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, u32 valid);
271
272 #define OBT(dev) (dev)->obd_type
273 #define OBP(dev, op) (dev)->obd_type->typ_dt_ops->op
274 #define MDP(dev, op) (dev)->obd_type->typ_md_ops->op
275 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
276
277 /* Ensure obd_setup: used for cleanup which must be called
278 while obd is stopping */
279 static inline int obd_check_dev(struct obd_device *obd)
280 {
281 if (!obd) {
282 CERROR("NULL device\n");
283 return -ENODEV;
284 }
285 return 0;
286 }
287
288 /* ensure obd_setup and !obd_stopping */
289 static inline int obd_check_dev_active(struct obd_device *obd)
290 {
291 int rc;
292
293 rc = obd_check_dev(obd);
294 if (rc)
295 return rc;
296 if (!obd->obd_set_up || obd->obd_stopping) {
297 CERROR("Device %d not setup\n", obd->obd_minor);
298 return -ENODEV;
299 }
300 return rc;
301 }
302
303 #define OBD_COUNTER_OFFSET(op) \
304 ((offsetof(struct obd_ops, op) - \
305 offsetof(struct obd_ops, iocontrol)) \
306 / sizeof(((struct obd_ops *)(0))->iocontrol))
307
308 #define OBD_COUNTER_INCREMENT(obdx, op) \
309 if ((obdx)->obd_stats) { \
310 unsigned int coffset; \
311 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
312 OBD_COUNTER_OFFSET(op); \
313 LASSERT(coffset < (obdx)->obd_stats->ls_num); \
314 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
315 }
316
317 #define EXP_COUNTER_INCREMENT(export, op) \
318 if ((export)->exp_obd->obd_stats) { \
319 unsigned int coffset; \
320 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
321 OBD_COUNTER_OFFSET(op); \
322 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num); \
323 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
324 }
325
326 #define MD_COUNTER_OFFSET(op) \
327 ((offsetof(struct md_ops, op) - \
328 offsetof(struct md_ops, getstatus)) \
329 / sizeof(((struct md_ops *)(0))->getstatus))
330
331 #define MD_COUNTER_INCREMENT(obdx, op) \
332 if ((obd)->md_stats) { \
333 unsigned int coffset; \
334 coffset = (unsigned int)((obdx)->md_cntr_base) + \
335 MD_COUNTER_OFFSET(op); \
336 LASSERT(coffset < (obdx)->md_stats->ls_num); \
337 lprocfs_counter_incr((obdx)->md_stats, coffset); \
338 }
339
340 #define EXP_MD_COUNTER_INCREMENT(export, op) \
341 if ((export)->exp_obd->obd_stats) { \
342 unsigned int coffset; \
343 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) + \
344 MD_COUNTER_OFFSET(op); \
345 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num); \
346 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset); \
347 if ((export)->exp_md_stats) \
348 lprocfs_counter_incr( \
349 (export)->exp_md_stats, coffset); \
350 }
351
352 #define EXP_CHECK_MD_OP(exp, op) \
353 do { \
354 if (!(exp)) { \
355 CERROR("obd_" #op ": NULL export\n"); \
356 return -ENODEV; \
357 } \
358 if (!(exp)->exp_obd || !OBT((exp)->exp_obd)) { \
359 CERROR("obd_" #op ": cleaned up obd\n"); \
360 return -EOPNOTSUPP; \
361 } \
362 if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
363 CERROR("obd_" #op ": dev %s/%d no operation\n", \
364 (exp)->exp_obd->obd_name, \
365 (exp)->exp_obd->obd_minor); \
366 return -EOPNOTSUPP; \
367 } \
368 } while (0)
369
370 #define OBD_CHECK_DT_OP(obd, op, err) \
371 do { \
372 if (!OBT(obd) || !OBP((obd), op)) { \
373 if (err) \
374 CERROR("obd_" #op ": dev %d no operation\n", \
375 obd->obd_minor); \
376 return err; \
377 } \
378 } while (0)
379
380 #define EXP_CHECK_DT_OP(exp, op) \
381 do { \
382 if (!(exp)) { \
383 CERROR("obd_" #op ": NULL export\n"); \
384 return -ENODEV; \
385 } \
386 if (!(exp)->exp_obd || !OBT((exp)->exp_obd)) { \
387 CERROR("obd_" #op ": cleaned up obd\n"); \
388 return -EOPNOTSUPP; \
389 } \
390 if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
391 CERROR("obd_" #op ": dev %d no operation\n", \
392 (exp)->exp_obd->obd_minor); \
393 return -EOPNOTSUPP; \
394 } \
395 } while (0)
396
397 #define CTXT_CHECK_OP(ctxt, op, err) \
398 do { \
399 if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) { \
400 if (err) \
401 CERROR("lop_" #op ": dev %d no operation\n", \
402 ctxt->loc_obd->obd_minor); \
403 return err; \
404 } \
405 } while (0)
406
407 static inline int class_devno_max(void)
408 {
409 return MAX_OBD_DEVICES;
410 }
411
412 static inline int obd_get_info(const struct lu_env *env,
413 struct obd_export *exp, __u32 keylen,
414 void *key, __u32 *vallen, void *val,
415 struct lov_stripe_md *lsm)
416 {
417 int rc;
418
419 EXP_CHECK_DT_OP(exp, get_info);
420 EXP_COUNTER_INCREMENT(exp, get_info);
421
422 rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val,
423 lsm);
424 return rc;
425 }
426
427 static inline int obd_set_info_async(const struct lu_env *env,
428 struct obd_export *exp, u32 keylen,
429 void *key, u32 vallen, void *val,
430 struct ptlrpc_request_set *set)
431 {
432 int rc;
433
434 EXP_CHECK_DT_OP(exp, set_info_async);
435 EXP_COUNTER_INCREMENT(exp, set_info_async);
436
437 rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
438 val, set);
439 return rc;
440 }
441
442 /*
443 * obd-lu integration.
444 *
445 * Functionality is being moved into new lu_device-based layering, but some
446 * pieces of configuration process are still based on obd devices.
447 *
448 * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
449 * subsume ->o_setup() methods of obd devices they replace. The same for
450 * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
451 * result, obd_setup() and obd_process_config() branch and call one XOR
452 * another.
453 *
454 * Yet neither lu_device_type_operations::ldto_device_fini() nor
455 * lu_device_type_operations::ldto_device_free() fully implement the
456 * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
457 * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
458 */
459
460 #define DECLARE_LU_VARS(ldt, d) \
461 struct lu_device_type *ldt; \
462 struct lu_device *d
463
464 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
465 {
466 int rc;
467 DECLARE_LU_VARS(ldt, d);
468
469 ldt = obd->obd_type->typ_lu;
470 if (ldt) {
471 struct lu_context session_ctx;
472 struct lu_env env;
473
474 lu_context_init(&session_ctx, LCT_SESSION);
475 session_ctx.lc_thread = NULL;
476 lu_context_enter(&session_ctx);
477
478 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
479 if (rc == 0) {
480 env.le_ses = &session_ctx;
481 d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
482 lu_env_fini(&env);
483 if (!IS_ERR(d)) {
484 obd->obd_lu_dev = d;
485 d->ld_obd = obd;
486 rc = 0;
487 } else
488 rc = PTR_ERR(d);
489 }
490 lu_context_exit(&session_ctx);
491 lu_context_fini(&session_ctx);
492
493 } else {
494 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
495 OBD_COUNTER_INCREMENT(obd, setup);
496 rc = OBP(obd, setup)(obd, cfg);
497 }
498 return rc;
499 }
500
501 static inline int obd_precleanup(struct obd_device *obd,
502 enum obd_cleanup_stage cleanup_stage)
503 {
504 int rc;
505 DECLARE_LU_VARS(ldt, d);
506
507 rc = obd_check_dev(obd);
508 if (rc)
509 return rc;
510 ldt = obd->obd_type->typ_lu;
511 d = obd->obd_lu_dev;
512 if (ldt && d) {
513 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
514 struct lu_env env;
515
516 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
517 if (rc == 0) {
518 ldt->ldt_ops->ldto_device_fini(&env, d);
519 lu_env_fini(&env);
520 }
521 }
522 }
523 OBD_CHECK_DT_OP(obd, precleanup, 0);
524 OBD_COUNTER_INCREMENT(obd, precleanup);
525
526 rc = OBP(obd, precleanup)(obd, cleanup_stage);
527 return rc;
528 }
529
530 static inline int obd_cleanup(struct obd_device *obd)
531 {
532 int rc;
533 DECLARE_LU_VARS(ldt, d);
534
535 rc = obd_check_dev(obd);
536 if (rc)
537 return rc;
538
539 ldt = obd->obd_type->typ_lu;
540 d = obd->obd_lu_dev;
541 if (ldt && d) {
542 struct lu_env env;
543
544 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
545 if (rc == 0) {
546 ldt->ldt_ops->ldto_device_free(&env, d);
547 lu_env_fini(&env);
548 obd->obd_lu_dev = NULL;
549 }
550 }
551 OBD_CHECK_DT_OP(obd, cleanup, 0);
552 OBD_COUNTER_INCREMENT(obd, cleanup);
553
554 rc = OBP(obd, cleanup)(obd);
555 return rc;
556 }
557
558 static inline void obd_cleanup_client_import(struct obd_device *obd)
559 {
560 /* If we set up but never connected, the
561 client import will not have been cleaned. */
562 down_write(&obd->u.cli.cl_sem);
563 if (obd->u.cli.cl_import) {
564 struct obd_import *imp;
565
566 imp = obd->u.cli.cl_import;
567 CDEBUG(D_CONFIG, "%s: client import never connected\n",
568 obd->obd_name);
569 ptlrpc_invalidate_import(imp);
570 client_destroy_import(imp);
571 obd->u.cli.cl_import = NULL;
572 }
573 up_write(&obd->u.cli.cl_sem);
574 }
575
576 static inline int
577 obd_process_config(struct obd_device *obd, int datalen, void *data)
578 {
579 int rc;
580 DECLARE_LU_VARS(ldt, d);
581
582 rc = obd_check_dev(obd);
583 if (rc)
584 return rc;
585
586 obd->obd_process_conf = 1;
587 ldt = obd->obd_type->typ_lu;
588 d = obd->obd_lu_dev;
589 if (ldt && d) {
590 struct lu_env env;
591
592 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
593 if (rc == 0) {
594 rc = d->ld_ops->ldo_process_config(&env, d, data);
595 lu_env_fini(&env);
596 }
597 } else {
598 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
599 rc = OBP(obd, process_config)(obd, datalen, data);
600 }
601 OBD_COUNTER_INCREMENT(obd, process_config);
602 obd->obd_process_conf = 0;
603
604 return rc;
605 }
606
607 /* Pack an in-memory MD struct for storage on disk.
608 * Returns +ve size of packed MD (0 for free), or -ve error.
609 *
610 * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
611 * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
612 * If @*disk_tgt == NULL, it will be allocated
613 */
614 static inline int obd_packmd(struct obd_export *exp,
615 struct lov_mds_md **disk_tgt,
616 struct lov_stripe_md *mem_src)
617 {
618 int rc;
619
620 EXP_CHECK_DT_OP(exp, packmd);
621 EXP_COUNTER_INCREMENT(exp, packmd);
622
623 rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
624 return rc;
625 }
626
627 static inline int obd_size_diskmd(struct obd_export *exp,
628 struct lov_stripe_md *mem_src)
629 {
630 return obd_packmd(exp, NULL, mem_src);
631 }
632
633 static inline int obd_free_diskmd(struct obd_export *exp,
634 struct lov_mds_md **disk_tgt)
635 {
636 LASSERT(disk_tgt);
637 LASSERT(*disk_tgt);
638 /*
639 * LU-2590, for caller's convenience, *disk_tgt could be host
640 * endianness, it needs swab to LE if necessary, while just
641 * lov_mds_md header needs it for figuring out how much memory
642 * needs to be freed.
643 */
644 if ((cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) &&
645 (((*disk_tgt)->lmm_magic == LOV_MAGIC_V1) ||
646 ((*disk_tgt)->lmm_magic == LOV_MAGIC_V3)))
647 lustre_swab_lov_mds_md(*disk_tgt);
648 return obd_packmd(exp, disk_tgt, NULL);
649 }
650
651 /* Unpack an MD struct from disk to in-memory format.
652 * Returns +ve size of unpacked MD (0 for free), or -ve error.
653 *
654 * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
655 * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
656 * If @*mem_tgt == NULL, it will be allocated
657 */
658 static inline int obd_unpackmd(struct obd_export *exp,
659 struct lov_stripe_md **mem_tgt,
660 struct lov_mds_md *disk_src,
661 int disk_len)
662 {
663 int rc;
664
665 EXP_CHECK_DT_OP(exp, unpackmd);
666 EXP_COUNTER_INCREMENT(exp, unpackmd);
667
668 rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
669 return rc;
670 }
671
672 /* helper functions */
673 static inline int obd_alloc_memmd(struct obd_export *exp,
674 struct lov_stripe_md **mem_tgt)
675 {
676 LASSERT(mem_tgt);
677 LASSERT(!*mem_tgt);
678 return obd_unpackmd(exp, mem_tgt, NULL, 0);
679 }
680
681 static inline int obd_free_memmd(struct obd_export *exp,
682 struct lov_stripe_md **mem_tgt)
683 {
684 int rc;
685
686 LASSERT(mem_tgt);
687 LASSERT(*mem_tgt);
688 rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
689 *mem_tgt = NULL;
690 return rc;
691 }
692
693 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
694 struct obdo *obdo, struct lov_stripe_md **ea,
695 struct obd_trans_info *oti)
696 {
697 int rc;
698
699 EXP_CHECK_DT_OP(exp, create);
700 EXP_COUNTER_INCREMENT(exp, create);
701
702 rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
703 return rc;
704 }
705
706 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
707 struct obdo *obdo, struct lov_stripe_md *ea,
708 struct obd_trans_info *oti,
709 struct obd_export *md_exp)
710 {
711 int rc;
712
713 EXP_CHECK_DT_OP(exp, destroy);
714 EXP_COUNTER_INCREMENT(exp, destroy);
715
716 rc = OBP(exp->exp_obd, destroy)(env, exp, obdo, ea, oti, md_exp);
717 return rc;
718 }
719
720 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
721 struct obd_info *oinfo)
722 {
723 int rc;
724
725 EXP_CHECK_DT_OP(exp, getattr);
726 EXP_COUNTER_INCREMENT(exp, getattr);
727
728 rc = OBP(exp->exp_obd, getattr)(env, exp, oinfo);
729 return rc;
730 }
731
732 static inline int obd_getattr_async(struct obd_export *exp,
733 struct obd_info *oinfo,
734 struct ptlrpc_request_set *set)
735 {
736 int rc;
737
738 EXP_CHECK_DT_OP(exp, getattr_async);
739 EXP_COUNTER_INCREMENT(exp, getattr_async);
740
741 rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
742 return rc;
743 }
744
745 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
746 struct obd_info *oinfo,
747 struct obd_trans_info *oti)
748 {
749 int rc;
750
751 EXP_CHECK_DT_OP(exp, setattr);
752 EXP_COUNTER_INCREMENT(exp, setattr);
753
754 rc = OBP(exp->exp_obd, setattr)(env, exp, oinfo, oti);
755 return rc;
756 }
757
758 /* This performs all the requests set init/wait/destroy actions. */
759 static inline int obd_setattr_rqset(struct obd_export *exp,
760 struct obd_info *oinfo,
761 struct obd_trans_info *oti)
762 {
763 struct ptlrpc_request_set *set = NULL;
764 int rc;
765
766 EXP_CHECK_DT_OP(exp, setattr_async);
767 EXP_COUNTER_INCREMENT(exp, setattr_async);
768
769 set = ptlrpc_prep_set();
770 if (!set)
771 return -ENOMEM;
772
773 rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
774 if (rc == 0)
775 rc = ptlrpc_set_wait(set);
776 ptlrpc_set_destroy(set);
777 return rc;
778 }
779
780 /* This adds all the requests into @set if @set != NULL, otherwise
781 all requests are sent asynchronously without waiting for response. */
782 static inline int obd_setattr_async(struct obd_export *exp,
783 struct obd_info *oinfo,
784 struct obd_trans_info *oti,
785 struct ptlrpc_request_set *set)
786 {
787 int rc;
788
789 EXP_CHECK_DT_OP(exp, setattr_async);
790 EXP_COUNTER_INCREMENT(exp, setattr_async);
791
792 rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
793 return rc;
794 }
795
796 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
797 int priority)
798 {
799 struct obd_device *obd = imp->imp_obd;
800 int rc;
801
802 rc = obd_check_dev_active(obd);
803 if (rc)
804 return rc;
805 OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
806 OBD_COUNTER_INCREMENT(obd, add_conn);
807
808 rc = OBP(obd, add_conn)(imp, uuid, priority);
809 return rc;
810 }
811
812 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
813 {
814 struct obd_device *obd = imp->imp_obd;
815 int rc;
816
817 rc = obd_check_dev_active(obd);
818 if (rc)
819 return rc;
820 OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
821 OBD_COUNTER_INCREMENT(obd, del_conn);
822
823 rc = OBP(obd, del_conn)(imp, uuid);
824 return rc;
825 }
826
827 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
828 {
829 struct obd_uuid *uuid;
830
831 OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
832 EXP_COUNTER_INCREMENT(exp, get_uuid);
833
834 uuid = OBP(exp->exp_obd, get_uuid)(exp);
835 return uuid;
836 }
837
838 /** Create a new /a exp on device /a obd for the uuid /a cluuid
839 * @param exp New export handle
840 * @param d Connect data, supported flags are set, flags also understood
841 * by obd are returned.
842 */
843 static inline int obd_connect(const struct lu_env *env,
844 struct obd_export **exp, struct obd_device *obd,
845 struct obd_uuid *cluuid,
846 struct obd_connect_data *data,
847 void *localdata)
848 {
849 int rc;
850 __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
851 * check */
852
853 rc = obd_check_dev_active(obd);
854 if (rc)
855 return rc;
856 OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
857 OBD_COUNTER_INCREMENT(obd, connect);
858
859 rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
860 /* check that only subset is granted */
861 LASSERT(ergo(data, (data->ocd_connect_flags & ocf) ==
862 data->ocd_connect_flags));
863 return rc;
864 }
865
866 static inline int obd_reconnect(const struct lu_env *env,
867 struct obd_export *exp,
868 struct obd_device *obd,
869 struct obd_uuid *cluuid,
870 struct obd_connect_data *d,
871 void *localdata)
872 {
873 int rc;
874 __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
875 * check */
876
877 rc = obd_check_dev_active(obd);
878 if (rc)
879 return rc;
880 OBD_CHECK_DT_OP(obd, reconnect, 0);
881 OBD_COUNTER_INCREMENT(obd, reconnect);
882
883 rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
884 /* check that only subset is granted */
885 LASSERT(ergo(d, (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
886 return rc;
887 }
888
889 static inline int obd_disconnect(struct obd_export *exp)
890 {
891 int rc;
892
893 EXP_CHECK_DT_OP(exp, disconnect);
894 EXP_COUNTER_INCREMENT(exp, disconnect);
895
896 rc = OBP(exp->exp_obd, disconnect)(exp);
897 return rc;
898 }
899
900 static inline int obd_fid_init(struct obd_device *obd, struct obd_export *exp,
901 enum lu_cli_type type)
902 {
903 int rc;
904
905 OBD_CHECK_DT_OP(obd, fid_init, 0);
906 OBD_COUNTER_INCREMENT(obd, fid_init);
907
908 rc = OBP(obd, fid_init)(obd, exp, type);
909 return rc;
910 }
911
912 static inline int obd_fid_fini(struct obd_device *obd)
913 {
914 int rc;
915
916 OBD_CHECK_DT_OP(obd, fid_fini, 0);
917 OBD_COUNTER_INCREMENT(obd, fid_fini);
918
919 rc = OBP(obd, fid_fini)(obd);
920 return rc;
921 }
922
923 static inline int obd_fid_alloc(struct obd_export *exp,
924 struct lu_fid *fid,
925 struct md_op_data *op_data)
926 {
927 int rc;
928
929 EXP_CHECK_DT_OP(exp, fid_alloc);
930 EXP_COUNTER_INCREMENT(exp, fid_alloc);
931
932 rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
933 return rc;
934 }
935
936 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
937 {
938 int rc;
939
940 OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
941 OBD_COUNTER_INCREMENT(obd, pool_new);
942
943 rc = OBP(obd, pool_new)(obd, poolname);
944 return rc;
945 }
946
947 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
948 {
949 int rc;
950
951 OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
952 OBD_COUNTER_INCREMENT(obd, pool_del);
953
954 rc = OBP(obd, pool_del)(obd, poolname);
955 return rc;
956 }
957
958 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
959 {
960 int rc;
961
962 OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
963 OBD_COUNTER_INCREMENT(obd, pool_add);
964
965 rc = OBP(obd, pool_add)(obd, poolname, ostname);
966 return rc;
967 }
968
969 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
970 {
971 int rc;
972
973 OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
974 OBD_COUNTER_INCREMENT(obd, pool_rem);
975
976 rc = OBP(obd, pool_rem)(obd, poolname, ostname);
977 return rc;
978 }
979
980 static inline void obd_getref(struct obd_device *obd)
981 {
982 if (OBT(obd) && OBP(obd, getref)) {
983 OBD_COUNTER_INCREMENT(obd, getref);
984 OBP(obd, getref)(obd);
985 }
986 }
987
988 static inline void obd_putref(struct obd_device *obd)
989 {
990 if (OBT(obd) && OBP(obd, putref)) {
991 OBD_COUNTER_INCREMENT(obd, putref);
992 OBP(obd, putref)(obd);
993 }
994 }
995
996 static inline int obd_init_export(struct obd_export *exp)
997 {
998 int rc = 0;
999
1000 if ((exp)->exp_obd && OBT((exp)->exp_obd) &&
1001 OBP((exp)->exp_obd, init_export))
1002 rc = OBP(exp->exp_obd, init_export)(exp);
1003 return rc;
1004 }
1005
1006 static inline int obd_destroy_export(struct obd_export *exp)
1007 {
1008 if ((exp)->exp_obd && OBT((exp)->exp_obd) &&
1009 OBP((exp)->exp_obd, destroy_export))
1010 OBP(exp->exp_obd, destroy_export)(exp);
1011 return 0;
1012 }
1013
1014 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1015 * If the cache is older than @max_age we will get a new value from the
1016 * target. Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1017 static inline int obd_statfs_async(struct obd_export *exp,
1018 struct obd_info *oinfo,
1019 __u64 max_age,
1020 struct ptlrpc_request_set *rqset)
1021 {
1022 int rc = 0;
1023 struct obd_device *obd;
1024
1025 if (!exp || !exp->exp_obd)
1026 return -EINVAL;
1027
1028 obd = exp->exp_obd;
1029 OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1030 OBD_COUNTER_INCREMENT(obd, statfs);
1031
1032 CDEBUG(D_SUPER, "%s: osfs %p age %llu, max_age %llu\n",
1033 obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1034 if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1035 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1036 } else {
1037 CDEBUG(D_SUPER,
1038 "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1039 obd->obd_name, &obd->obd_osfs,
1040 obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1041 obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1042 spin_lock(&obd->obd_osfs_lock);
1043 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1044 spin_unlock(&obd->obd_osfs_lock);
1045 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1046 if (oinfo->oi_cb_up)
1047 oinfo->oi_cb_up(oinfo, 0);
1048 }
1049 return rc;
1050 }
1051
1052 static inline int obd_statfs_rqset(struct obd_export *exp,
1053 struct obd_statfs *osfs, __u64 max_age,
1054 __u32 flags)
1055 {
1056 struct ptlrpc_request_set *set = NULL;
1057 struct obd_info oinfo = { };
1058 int rc = 0;
1059
1060 set = ptlrpc_prep_set();
1061 if (!set)
1062 return -ENOMEM;
1063
1064 oinfo.oi_osfs = osfs;
1065 oinfo.oi_flags = flags;
1066 rc = obd_statfs_async(exp, &oinfo, max_age, set);
1067 if (rc == 0)
1068 rc = ptlrpc_set_wait(set);
1069 ptlrpc_set_destroy(set);
1070 return rc;
1071 }
1072
1073 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1074 * If the cache is older than @max_age we will get a new value from the
1075 * target. Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1076 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1077 struct obd_statfs *osfs, __u64 max_age,
1078 __u32 flags)
1079 {
1080 int rc = 0;
1081 struct obd_device *obd = exp->exp_obd;
1082
1083 if (!obd)
1084 return -EINVAL;
1085
1086 OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1087 OBD_COUNTER_INCREMENT(obd, statfs);
1088
1089 CDEBUG(D_SUPER, "osfs %llu, max_age %llu\n",
1090 obd->obd_osfs_age, max_age);
1091 if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1092 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1093 if (rc == 0) {
1094 spin_lock(&obd->obd_osfs_lock);
1095 memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1096 obd->obd_osfs_age = cfs_time_current_64();
1097 spin_unlock(&obd->obd_osfs_lock);
1098 }
1099 } else {
1100 CDEBUG(D_SUPER, "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1101 obd->obd_name, &obd->obd_osfs,
1102 obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1103 obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1104 spin_lock(&obd->obd_osfs_lock);
1105 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1106 spin_unlock(&obd->obd_osfs_lock);
1107 }
1108 return rc;
1109 }
1110
1111 static inline int obd_preprw(const struct lu_env *env, int cmd,
1112 struct obd_export *exp, struct obdo *oa,
1113 int objcount, struct obd_ioobj *obj,
1114 struct niobuf_remote *remote, int *pages,
1115 struct niobuf_local *local,
1116 struct obd_trans_info *oti)
1117 {
1118 int rc;
1119
1120 EXP_CHECK_DT_OP(exp, preprw);
1121 EXP_COUNTER_INCREMENT(exp, preprw);
1122
1123 rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1124 pages, local, oti);
1125 return rc;
1126 }
1127
1128 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1129 struct obd_export *exp, struct obdo *oa,
1130 int objcount, struct obd_ioobj *obj,
1131 struct niobuf_remote *rnb, int pages,
1132 struct niobuf_local *local,
1133 struct obd_trans_info *oti, int rc)
1134 {
1135 EXP_CHECK_DT_OP(exp, commitrw);
1136 EXP_COUNTER_INCREMENT(exp, commitrw);
1137
1138 rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1139 rnb, pages, local, oti, rc);
1140 return rc;
1141 }
1142
1143 static inline int obd_adjust_kms(struct obd_export *exp,
1144 struct lov_stripe_md *lsm, u64 size,
1145 int shrink)
1146 {
1147 int rc;
1148
1149 EXP_CHECK_DT_OP(exp, adjust_kms);
1150 EXP_COUNTER_INCREMENT(exp, adjust_kms);
1151
1152 rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1153 return rc;
1154 }
1155
1156 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1157 int len, void *karg, void __user *uarg)
1158 {
1159 int rc;
1160
1161 EXP_CHECK_DT_OP(exp, iocontrol);
1162 EXP_COUNTER_INCREMENT(exp, iocontrol);
1163
1164 rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1165 return rc;
1166 }
1167
1168 static inline int obd_find_cbdata(struct obd_export *exp,
1169 struct lov_stripe_md *lsm,
1170 ldlm_iterator_t it, void *data)
1171 {
1172 int rc;
1173
1174 EXP_CHECK_DT_OP(exp, find_cbdata);
1175 EXP_COUNTER_INCREMENT(exp, find_cbdata);
1176
1177 rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1178 return rc;
1179 }
1180
1181 static inline void obd_import_event(struct obd_device *obd,
1182 struct obd_import *imp,
1183 enum obd_import_event event)
1184 {
1185 if (!obd) {
1186 CERROR("NULL device\n");
1187 return;
1188 }
1189 if (obd->obd_set_up && OBP(obd, import_event)) {
1190 OBD_COUNTER_INCREMENT(obd, import_event);
1191 OBP(obd, import_event)(obd, imp, event);
1192 }
1193 }
1194
1195 static inline int obd_notify(struct obd_device *obd,
1196 struct obd_device *watched,
1197 enum obd_notify_event ev,
1198 void *data)
1199 {
1200 int rc;
1201
1202 rc = obd_check_dev(obd);
1203 if (rc)
1204 return rc;
1205
1206 /* the check for async_recov is a complete hack - I'm hereby
1207 overloading the meaning to also mean "this was called from
1208 mds_postsetup". I know that my mds is able to handle notifies
1209 by this point, and it needs to get them to execute mds_postrecov. */
1210 if (!obd->obd_set_up && !obd->obd_async_recov) {
1211 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1212 return -EINVAL;
1213 }
1214
1215 if (!OBP(obd, notify)) {
1216 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1217 return -ENOSYS;
1218 }
1219
1220 OBD_COUNTER_INCREMENT(obd, notify);
1221 rc = OBP(obd, notify)(obd, watched, ev, data);
1222 return rc;
1223 }
1224
1225 static inline int obd_notify_observer(struct obd_device *observer,
1226 struct obd_device *observed,
1227 enum obd_notify_event ev,
1228 void *data)
1229 {
1230 int rc1;
1231 int rc2;
1232
1233 struct obd_notify_upcall *onu;
1234
1235 if (observer->obd_observer)
1236 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1237 else
1238 rc1 = 0;
1239 /*
1240 * Also, call non-obd listener, if any
1241 */
1242 onu = &observer->obd_upcall;
1243 if (onu->onu_upcall)
1244 rc2 = onu->onu_upcall(observer, observed, ev,
1245 onu->onu_owner, NULL);
1246 else
1247 rc2 = 0;
1248
1249 return rc1 ? rc1 : rc2;
1250 }
1251
1252 static inline int obd_quotacheck(struct obd_export *exp,
1253 struct obd_quotactl *oqctl)
1254 {
1255 int rc;
1256
1257 EXP_CHECK_DT_OP(exp, quotacheck);
1258 EXP_COUNTER_INCREMENT(exp, quotacheck);
1259
1260 rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1261 return rc;
1262 }
1263
1264 static inline int obd_quotactl(struct obd_export *exp,
1265 struct obd_quotactl *oqctl)
1266 {
1267 int rc;
1268
1269 EXP_CHECK_DT_OP(exp, quotactl);
1270 EXP_COUNTER_INCREMENT(exp, quotactl);
1271
1272 rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1273 return rc;
1274 }
1275
1276 static inline int obd_health_check(const struct lu_env *env,
1277 struct obd_device *obd)
1278 {
1279 /* returns: 0 on healthy
1280 * >0 on unhealthy + reason code/flag
1281 * however the only supported reason == 1 right now
1282 * We'll need to define some better reasons
1283 * or flags in the future.
1284 * <0 on error
1285 */
1286 int rc;
1287
1288 /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1289 if (!obd || !OBT(obd)) {
1290 CERROR("cleaned up obd\n");
1291 return -EOPNOTSUPP;
1292 }
1293 if (!obd->obd_set_up || obd->obd_stopping)
1294 return 0;
1295 if (!OBP(obd, health_check))
1296 return 0;
1297
1298 rc = OBP(obd, health_check)(env, obd);
1299 return rc;
1300 }
1301
1302 static inline int obd_register_observer(struct obd_device *obd,
1303 struct obd_device *observer)
1304 {
1305 int rc;
1306
1307 rc = obd_check_dev(obd);
1308 if (rc)
1309 return rc;
1310 down_write(&obd->obd_observer_link_sem);
1311 if (obd->obd_observer && observer) {
1312 up_write(&obd->obd_observer_link_sem);
1313 return -EALREADY;
1314 }
1315 obd->obd_observer = observer;
1316 up_write(&obd->obd_observer_link_sem);
1317 return 0;
1318 }
1319
1320 #if 0
1321 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1322 obd_page_removal_cb_t cb,
1323 obd_pin_extent_cb pin_cb)
1324 {
1325 int rc;
1326
1327 OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1328 OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1329
1330 rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1331 return rc;
1332 }
1333
1334 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1335 obd_page_removal_cb_t cb)
1336 {
1337 int rc;
1338
1339 OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1340 OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1341
1342 rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1343 return rc;
1344 }
1345
1346 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1347 obd_lock_cancel_cb cb)
1348 {
1349 int rc;
1350
1351 OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1352 OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1353
1354 rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1355 return rc;
1356 }
1357
1358 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1359 obd_lock_cancel_cb cb)
1360 {
1361 int rc;
1362
1363 OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1364 OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1365
1366 rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1367 return rc;
1368 }
1369 #endif
1370
1371 /* metadata helpers */
1372 static inline int md_getstatus(struct obd_export *exp, struct lu_fid *fid)
1373 {
1374 int rc;
1375
1376 EXP_CHECK_MD_OP(exp, getstatus);
1377 EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1378 rc = MDP(exp->exp_obd, getstatus)(exp, fid);
1379 return rc;
1380 }
1381
1382 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1383 struct ptlrpc_request **request)
1384 {
1385 int rc;
1386
1387 EXP_CHECK_MD_OP(exp, getattr);
1388 EXP_MD_COUNTER_INCREMENT(exp, getattr);
1389 rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1390 return rc;
1391 }
1392
1393 static inline int md_null_inode(struct obd_export *exp,
1394 const struct lu_fid *fid)
1395 {
1396 int rc;
1397
1398 EXP_CHECK_MD_OP(exp, null_inode);
1399 EXP_MD_COUNTER_INCREMENT(exp, null_inode);
1400 rc = MDP(exp->exp_obd, null_inode)(exp, fid);
1401 return rc;
1402 }
1403
1404 static inline int md_find_cbdata(struct obd_export *exp,
1405 const struct lu_fid *fid,
1406 ldlm_iterator_t it, void *data)
1407 {
1408 int rc;
1409
1410 EXP_CHECK_MD_OP(exp, find_cbdata);
1411 EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1412 rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1413 return rc;
1414 }
1415
1416 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1417 struct md_open_data *mod,
1418 struct ptlrpc_request **request)
1419 {
1420 int rc;
1421
1422 EXP_CHECK_MD_OP(exp, close);
1423 EXP_MD_COUNTER_INCREMENT(exp, close);
1424 rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1425 return rc;
1426 }
1427
1428 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1429 const void *data, int datalen, int mode, __u32 uid,
1430 __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1431 struct ptlrpc_request **request)
1432 {
1433 int rc;
1434
1435 EXP_CHECK_MD_OP(exp, create);
1436 EXP_MD_COUNTER_INCREMENT(exp, create);
1437 rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1438 uid, gid, cap_effective, rdev, request);
1439 return rc;
1440 }
1441
1442 static inline int md_done_writing(struct obd_export *exp,
1443 struct md_op_data *op_data,
1444 struct md_open_data *mod)
1445 {
1446 int rc;
1447
1448 EXP_CHECK_MD_OP(exp, done_writing);
1449 EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1450 rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1451 return rc;
1452 }
1453
1454 static inline int md_enqueue(struct obd_export *exp,
1455 struct ldlm_enqueue_info *einfo,
1456 struct lookup_intent *it,
1457 struct md_op_data *op_data,
1458 struct lustre_handle *lockh,
1459 void *lmm, int lmmsize,
1460 struct ptlrpc_request **req,
1461 __u64 extra_lock_flags)
1462 {
1463 int rc;
1464
1465 EXP_CHECK_MD_OP(exp, enqueue);
1466 EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1467 rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1468 lmm, lmmsize, req, extra_lock_flags);
1469 return rc;
1470 }
1471
1472 static inline int md_getattr_name(struct obd_export *exp,
1473 struct md_op_data *op_data,
1474 struct ptlrpc_request **request)
1475 {
1476 int rc;
1477
1478 EXP_CHECK_MD_OP(exp, getattr_name);
1479 EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1480 rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1481 return rc;
1482 }
1483
1484 static inline int md_intent_lock(struct obd_export *exp,
1485 struct md_op_data *op_data, void *lmm,
1486 int lmmsize, struct lookup_intent *it,
1487 int lookup_flags, struct ptlrpc_request **reqp,
1488 ldlm_blocking_callback cb_blocking,
1489 __u64 extra_lock_flags)
1490 {
1491 int rc;
1492
1493 EXP_CHECK_MD_OP(exp, intent_lock);
1494 EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1495 rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1496 it, lookup_flags, reqp, cb_blocking,
1497 extra_lock_flags);
1498 return rc;
1499 }
1500
1501 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1502 struct ptlrpc_request **request)
1503 {
1504 int rc;
1505
1506 EXP_CHECK_MD_OP(exp, link);
1507 EXP_MD_COUNTER_INCREMENT(exp, link);
1508 rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1509 return rc;
1510 }
1511
1512 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1513 const char *old, int oldlen, const char *new,
1514 int newlen, struct ptlrpc_request **request)
1515 {
1516 int rc;
1517
1518 EXP_CHECK_MD_OP(exp, rename);
1519 EXP_MD_COUNTER_INCREMENT(exp, rename);
1520 rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1521 newlen, request);
1522 return rc;
1523 }
1524
1525 static inline int md_is_subdir(struct obd_export *exp,
1526 const struct lu_fid *pfid,
1527 const struct lu_fid *cfid,
1528 struct ptlrpc_request **request)
1529 {
1530 int rc;
1531
1532 EXP_CHECK_MD_OP(exp, is_subdir);
1533 EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1534 rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1535 return rc;
1536 }
1537
1538 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1539 void *ea, int ealen, void *ea2, int ea2len,
1540 struct ptlrpc_request **request,
1541 struct md_open_data **mod)
1542 {
1543 int rc;
1544
1545 EXP_CHECK_MD_OP(exp, setattr);
1546 EXP_MD_COUNTER_INCREMENT(exp, setattr);
1547 rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1548 ea2, ea2len, request, mod);
1549 return rc;
1550 }
1551
1552 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1553 struct ptlrpc_request **request)
1554 {
1555 int rc;
1556
1557 EXP_CHECK_MD_OP(exp, sync);
1558 EXP_MD_COUNTER_INCREMENT(exp, sync);
1559 rc = MDP(exp->exp_obd, sync)(exp, fid, request);
1560 return rc;
1561 }
1562
1563 static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
1564 struct page **pages,
1565 struct ptlrpc_request **request)
1566 {
1567 int rc;
1568
1569 EXP_CHECK_MD_OP(exp, readpage);
1570 EXP_MD_COUNTER_INCREMENT(exp, readpage);
1571 rc = MDP(exp->exp_obd, readpage)(exp, opdata, pages, request);
1572 return rc;
1573 }
1574
1575 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1576 struct ptlrpc_request **request)
1577 {
1578 int rc;
1579
1580 EXP_CHECK_MD_OP(exp, unlink);
1581 EXP_MD_COUNTER_INCREMENT(exp, unlink);
1582 rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1583 return rc;
1584 }
1585
1586 static inline int md_get_lustre_md(struct obd_export *exp,
1587 struct ptlrpc_request *req,
1588 struct obd_export *dt_exp,
1589 struct obd_export *md_exp,
1590 struct lustre_md *md)
1591 {
1592 EXP_CHECK_MD_OP(exp, get_lustre_md);
1593 EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1594 return MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md);
1595 }
1596
1597 static inline int md_free_lustre_md(struct obd_export *exp,
1598 struct lustre_md *md)
1599 {
1600 EXP_CHECK_MD_OP(exp, free_lustre_md);
1601 EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1602 return MDP(exp->exp_obd, free_lustre_md)(exp, md);
1603 }
1604
1605 static inline int md_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1606 u64 valid, const char *name,
1607 const char *input, int input_size,
1608 int output_size, int flags, __u32 suppgid,
1609 struct ptlrpc_request **request)
1610 {
1611 EXP_CHECK_MD_OP(exp, setxattr);
1612 EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1613 return MDP(exp->exp_obd, setxattr)(exp, fid, valid, name, input,
1614 input_size, output_size, flags,
1615 suppgid, request);
1616 }
1617
1618 static inline int md_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1619 u64 valid, const char *name,
1620 const char *input, int input_size,
1621 int output_size, int flags,
1622 struct ptlrpc_request **request)
1623 {
1624 EXP_CHECK_MD_OP(exp, getxattr);
1625 EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1626 return MDP(exp->exp_obd, getxattr)(exp, fid, valid, name, input,
1627 input_size, output_size, flags,
1628 request);
1629 }
1630
1631 static inline int md_set_open_replay_data(struct obd_export *exp,
1632 struct obd_client_handle *och,
1633 struct lookup_intent *it)
1634 {
1635 EXP_CHECK_MD_OP(exp, set_open_replay_data);
1636 EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1637 return MDP(exp->exp_obd, set_open_replay_data)(exp, och, it);
1638 }
1639
1640 static inline int md_clear_open_replay_data(struct obd_export *exp,
1641 struct obd_client_handle *och)
1642 {
1643 EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1644 EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1645 return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1646 }
1647
1648 static inline int md_set_lock_data(struct obd_export *exp,
1649 __u64 *lockh, void *data, __u64 *bits)
1650 {
1651 EXP_CHECK_MD_OP(exp, set_lock_data);
1652 EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1653 return MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits);
1654 }
1655
1656 static inline int md_cancel_unused(struct obd_export *exp,
1657 const struct lu_fid *fid,
1658 ldlm_policy_data_t *policy,
1659 enum ldlm_mode mode,
1660 ldlm_cancel_flags_t flags,
1661 void *opaque)
1662 {
1663 int rc;
1664
1665 EXP_CHECK_MD_OP(exp, cancel_unused);
1666 EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1667
1668 rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1669 flags, opaque);
1670 return rc;
1671 }
1672
1673 static inline enum ldlm_mode md_lock_match(struct obd_export *exp, __u64 flags,
1674 const struct lu_fid *fid,
1675 enum ldlm_type type,
1676 ldlm_policy_data_t *policy,
1677 enum ldlm_mode mode,
1678 struct lustre_handle *lockh)
1679 {
1680 EXP_CHECK_MD_OP(exp, lock_match);
1681 EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1682 return MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1683 policy, mode, lockh);
1684 }
1685
1686 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1687 int def_asize, int cookiesize,
1688 int def_cookiesize)
1689 {
1690 EXP_CHECK_MD_OP(exp, init_ea_size);
1691 EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1692 return MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1693 cookiesize, def_cookiesize);
1694 }
1695
1696 static inline int md_get_remote_perm(struct obd_export *exp,
1697 const struct lu_fid *fid, __u32 suppgid,
1698 struct ptlrpc_request **request)
1699 {
1700 EXP_CHECK_MD_OP(exp, get_remote_perm);
1701 EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1702 return MDP(exp->exp_obd, get_remote_perm)(exp, fid, suppgid,
1703 request);
1704 }
1705
1706 static inline int md_intent_getattr_async(struct obd_export *exp,
1707 struct md_enqueue_info *minfo,
1708 struct ldlm_enqueue_info *einfo)
1709 {
1710 int rc;
1711
1712 EXP_CHECK_MD_OP(exp, intent_getattr_async);
1713 EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
1714 rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
1715 return rc;
1716 }
1717
1718 static inline int md_revalidate_lock(struct obd_export *exp,
1719 struct lookup_intent *it,
1720 struct lu_fid *fid, __u64 *bits)
1721 {
1722 int rc;
1723
1724 EXP_CHECK_MD_OP(exp, revalidate_lock);
1725 EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
1726 rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
1727 return rc;
1728 }
1729
1730 /* OBD Metadata Support */
1731
1732 int obd_init_caches(void);
1733 void obd_cleanup_caches(void);
1734
1735 /* support routines */
1736 extern struct kmem_cache *obdo_cachep;
1737
1738 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
1739 {
1740 /* something here */
1741 }
1742
1743 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
1744 {
1745 /* something here */
1746 }
1747
1748 typedef int (*register_lwp_cb)(void *data);
1749
1750 struct lwp_register_item {
1751 struct obd_export **lri_exp;
1752 register_lwp_cb lri_cb_func;
1753 void *lri_cb_data;
1754 struct list_head lri_list;
1755 char lri_name[MTI_NAME_MAXLEN];
1756 };
1757
1758 /* I'm as embarrassed about this as you are.
1759 *
1760 * <shaver> // XXX do not look into _superhack with remaining eye
1761 * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1762 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1763
1764 /* obd_mount.c */
1765
1766 /* sysctl.c */
1767 int obd_sysctl_init(void);
1768
1769 /* uuid.c */
1770 typedef __u8 class_uuid_t[16];
1771 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1772
1773 /* lustre_peer.c */
1774 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
1775 int class_add_uuid(const char *uuid, __u64 nid);
1776 int class_del_uuid (const char *uuid);
1777 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
1778 void class_init_uuidlist(void);
1779 void class_exit_uuidlist(void);
1780
1781 /* class_obd.c */
1782 extern char obd_jobid_node[];
1783 extern struct miscdevice obd_psdev;
1784 extern spinlock_t obd_types_lock;
1785
1786 /* prng.c */
1787 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
1788
1789 #endif /* __LINUX_OBD_CLASS_H */
Linux kernel - Deliverables
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