1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _FS_CEPH_OSD_CLIENT_H |
3 | #define _FS_CEPH_OSD_CLIENT_H |
4 | |
5 | #include <linux/bitrev.h> |
6 | #include <linux/completion.h> |
7 | #include <linux/kref.h> |
8 | #include <linux/mempool.h> |
9 | #include <linux/rbtree.h> |
10 | #include <linux/refcount.h> |
11 | #include <linux/ktime.h> |
12 | |
13 | #include <linux/ceph/types.h> |
14 | #include <linux/ceph/osdmap.h> |
15 | #include <linux/ceph/messenger.h> |
16 | #include <linux/ceph/msgpool.h> |
17 | #include <linux/ceph/auth.h> |
18 | #include <linux/ceph/pagelist.h> |
19 | |
20 | struct ceph_msg; |
21 | struct ceph_snap_context; |
22 | struct ceph_osd_request; |
23 | struct ceph_osd_client; |
24 | |
25 | /* |
26 | * completion callback for async writepages |
27 | */ |
28 | typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *); |
29 | |
30 | #define CEPH_HOMELESS_OSD -1 |
31 | |
32 | /* |
33 | * A single extent in a SPARSE_READ reply. |
34 | * |
35 | * Note that these come from the OSD as little-endian values. On BE arches, |
36 | * we convert them in-place after receipt. |
37 | */ |
38 | struct ceph_sparse_extent { |
39 | u64 off; |
40 | u64 len; |
41 | } __packed; |
42 | |
43 | /* Sparse read state machine state values */ |
44 | enum ceph_sparse_read_state { |
45 | CEPH_SPARSE_READ_HDR = 0, |
46 | CEPH_SPARSE_READ_EXTENTS, |
47 | CEPH_SPARSE_READ_DATA_LEN, |
48 | CEPH_SPARSE_READ_DATA, |
49 | }; |
50 | |
51 | /* |
52 | * A SPARSE_READ reply is a 32-bit count of extents, followed by an array of |
53 | * 64-bit offset/length pairs, and then all of the actual file data |
54 | * concatenated after it (sans holes). |
55 | * |
56 | * Unfortunately, we don't know how long the extent array is until we've |
57 | * started reading the data section of the reply. The caller should send down |
58 | * a destination buffer for the array, but we'll alloc one if it's too small |
59 | * or if the caller doesn't. |
60 | */ |
61 | struct ceph_sparse_read { |
62 | enum ceph_sparse_read_state sr_state; /* state machine state */ |
63 | u64 sr_req_off; /* orig request offset */ |
64 | u64 sr_req_len; /* orig request length */ |
65 | u64 sr_pos; /* current pos in buffer */ |
66 | int sr_index; /* current extent index */ |
67 | __le32 sr_datalen; /* length of actual data */ |
68 | u32 sr_count; /* extent count in reply */ |
69 | int sr_ext_len; /* length of extent array */ |
70 | struct ceph_sparse_extent *sr_extent; /* extent array */ |
71 | }; |
72 | |
73 | /* |
74 | * A given osd we're communicating with. |
75 | * |
76 | * Note that the o_requests tree can be searched while holding the "lock" mutex |
77 | * or the "o_requests_lock" spinlock. Insertion or removal requires both! |
78 | */ |
79 | struct ceph_osd { |
80 | refcount_t o_ref; |
81 | int o_sparse_op_idx; |
82 | struct ceph_osd_client *o_osdc; |
83 | int o_osd; |
84 | int o_incarnation; |
85 | struct rb_node o_node; |
86 | struct ceph_connection o_con; |
87 | spinlock_t o_requests_lock; |
88 | struct rb_root o_requests; |
89 | struct rb_root o_linger_requests; |
90 | struct rb_root o_backoff_mappings; |
91 | struct rb_root o_backoffs_by_id; |
92 | struct list_head o_osd_lru; |
93 | struct ceph_auth_handshake o_auth; |
94 | unsigned long lru_ttl; |
95 | struct list_head o_keepalive_item; |
96 | struct mutex lock; |
97 | struct ceph_sparse_read o_sparse_read; |
98 | }; |
99 | |
100 | #define CEPH_OSD_SLAB_OPS 2 |
101 | #define CEPH_OSD_MAX_OPS 16 |
102 | |
103 | enum ceph_osd_data_type { |
104 | CEPH_OSD_DATA_TYPE_NONE = 0, |
105 | CEPH_OSD_DATA_TYPE_PAGES, |
106 | CEPH_OSD_DATA_TYPE_PAGELIST, |
107 | #ifdef CONFIG_BLOCK |
108 | CEPH_OSD_DATA_TYPE_BIO, |
109 | #endif /* CONFIG_BLOCK */ |
110 | CEPH_OSD_DATA_TYPE_BVECS, |
111 | CEPH_OSD_DATA_TYPE_ITER, |
112 | }; |
113 | |
114 | struct ceph_osd_data { |
115 | enum ceph_osd_data_type type; |
116 | union { |
117 | struct { |
118 | struct page **pages; |
119 | u64 length; |
120 | u32 alignment; |
121 | bool pages_from_pool; |
122 | bool own_pages; |
123 | }; |
124 | struct ceph_pagelist *pagelist; |
125 | #ifdef CONFIG_BLOCK |
126 | struct { |
127 | struct ceph_bio_iter bio_pos; |
128 | u32 bio_length; |
129 | }; |
130 | #endif /* CONFIG_BLOCK */ |
131 | struct { |
132 | struct ceph_bvec_iter bvec_pos; |
133 | u32 num_bvecs; |
134 | }; |
135 | struct iov_iter iter; |
136 | }; |
137 | }; |
138 | |
139 | struct ceph_osd_req_op { |
140 | u16 op; /* CEPH_OSD_OP_* */ |
141 | u32 flags; /* CEPH_OSD_OP_FLAG_* */ |
142 | u32 indata_len; /* request */ |
143 | u32 outdata_len; /* reply */ |
144 | s32 rval; |
145 | |
146 | union { |
147 | struct ceph_osd_data raw_data_in; |
148 | struct { |
149 | u64 offset, length; |
150 | u64 truncate_size; |
151 | u32 truncate_seq; |
152 | int sparse_ext_cnt; |
153 | struct ceph_sparse_extent *sparse_ext; |
154 | struct ceph_osd_data osd_data; |
155 | } extent; |
156 | struct { |
157 | u32 name_len; |
158 | u32 value_len; |
159 | __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */ |
160 | __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */ |
161 | struct ceph_osd_data osd_data; |
162 | } xattr; |
163 | struct { |
164 | const char *class_name; |
165 | const char *method_name; |
166 | struct ceph_osd_data request_info; |
167 | struct ceph_osd_data request_data; |
168 | struct ceph_osd_data response_data; |
169 | __u8 class_len; |
170 | __u8 method_len; |
171 | u32 indata_len; |
172 | } cls; |
173 | struct { |
174 | u64 cookie; |
175 | __u8 op; /* CEPH_OSD_WATCH_OP_ */ |
176 | u32 gen; |
177 | } watch; |
178 | struct { |
179 | struct ceph_osd_data request_data; |
180 | } notify_ack; |
181 | struct { |
182 | u64 cookie; |
183 | struct ceph_osd_data request_data; |
184 | struct ceph_osd_data response_data; |
185 | } notify; |
186 | struct { |
187 | struct ceph_osd_data response_data; |
188 | } list_watchers; |
189 | struct { |
190 | u64 expected_object_size; |
191 | u64 expected_write_size; |
192 | u32 flags; /* CEPH_OSD_OP_ALLOC_HINT_FLAG_* */ |
193 | } alloc_hint; |
194 | struct { |
195 | u64 snapid; |
196 | u64 src_version; |
197 | u8 flags; |
198 | u32 src_fadvise_flags; |
199 | struct ceph_osd_data osd_data; |
200 | } copy_from; |
201 | struct { |
202 | u64 ver; |
203 | } assert_ver; |
204 | }; |
205 | }; |
206 | |
207 | struct ceph_osd_request_target { |
208 | struct ceph_object_id base_oid; |
209 | struct ceph_object_locator base_oloc; |
210 | struct ceph_object_id target_oid; |
211 | struct ceph_object_locator target_oloc; |
212 | |
213 | struct ceph_pg pgid; /* last raw pg we mapped to */ |
214 | struct ceph_spg spgid; /* last actual spg we mapped to */ |
215 | u32 pg_num; |
216 | u32 pg_num_mask; |
217 | struct ceph_osds acting; |
218 | struct ceph_osds up; |
219 | int size; |
220 | int min_size; |
221 | bool sort_bitwise; |
222 | bool recovery_deletes; |
223 | |
224 | unsigned int flags; /* CEPH_OSD_FLAG_* */ |
225 | bool used_replica; |
226 | bool paused; |
227 | |
228 | u32 epoch; |
229 | u32 last_force_resend; |
230 | |
231 | int osd; |
232 | }; |
233 | |
234 | /* an in-flight request */ |
235 | struct ceph_osd_request { |
236 | u64 r_tid; /* unique for this client */ |
237 | struct rb_node r_node; |
238 | struct rb_node r_mc_node; /* map check */ |
239 | struct work_struct r_complete_work; |
240 | struct ceph_osd *r_osd; |
241 | |
242 | struct ceph_osd_request_target r_t; |
243 | #define r_base_oid r_t.base_oid |
244 | #define r_base_oloc r_t.base_oloc |
245 | #define r_flags r_t.flags |
246 | |
247 | struct ceph_msg *r_request, *r_reply; |
248 | u32 r_sent; /* >0 if r_request is sending/sent */ |
249 | |
250 | /* request osd ops array */ |
251 | unsigned int r_num_ops; |
252 | |
253 | int r_result; |
254 | |
255 | struct ceph_osd_client *r_osdc; |
256 | struct kref r_kref; |
257 | bool r_mempool; |
258 | bool r_linger; /* don't resend on failure */ |
259 | struct completion r_completion; /* private to osd_client.c */ |
260 | ceph_osdc_callback_t r_callback; |
261 | |
262 | struct inode *r_inode; /* for use by callbacks */ |
263 | struct list_head r_private_item; /* ditto */ |
264 | void *r_priv; /* ditto */ |
265 | |
266 | /* set by submitter */ |
267 | u64 r_snapid; /* for reads, CEPH_NOSNAP o/w */ |
268 | struct ceph_snap_context *r_snapc; /* for writes */ |
269 | struct timespec64 r_mtime; /* ditto */ |
270 | u64 r_data_offset; /* ditto */ |
271 | |
272 | /* internal */ |
273 | u64 r_version; /* data version sent in reply */ |
274 | unsigned long r_stamp; /* jiffies, send or check time */ |
275 | unsigned long r_start_stamp; /* jiffies */ |
276 | ktime_t r_start_latency; /* ktime_t */ |
277 | ktime_t r_end_latency; /* ktime_t */ |
278 | int r_attempts; |
279 | u32 r_map_dne_bound; |
280 | |
281 | struct ceph_osd_req_op r_ops[] __counted_by(r_num_ops); |
282 | }; |
283 | |
284 | struct ceph_request_redirect { |
285 | struct ceph_object_locator oloc; |
286 | }; |
287 | |
288 | /* |
289 | * osd request identifier |
290 | * |
291 | * caller name + incarnation# + tid to unique identify this request |
292 | */ |
293 | struct ceph_osd_reqid { |
294 | struct ceph_entity_name name; |
295 | __le64 tid; |
296 | __le32 inc; |
297 | } __packed; |
298 | |
299 | struct ceph_blkin_trace_info { |
300 | __le64 trace_id; |
301 | __le64 span_id; |
302 | __le64 parent_span_id; |
303 | } __packed; |
304 | |
305 | typedef void (*rados_watchcb2_t)(void *arg, u64 notify_id, u64 cookie, |
306 | u64 notifier_id, void *data, size_t data_len); |
307 | typedef void (*rados_watcherrcb_t)(void *arg, u64 cookie, int err); |
308 | |
309 | struct ceph_osd_linger_request { |
310 | struct ceph_osd_client *osdc; |
311 | u64 linger_id; |
312 | bool committed; |
313 | bool is_watch; /* watch or notify */ |
314 | |
315 | struct ceph_osd *osd; |
316 | struct ceph_osd_request *reg_req; |
317 | struct ceph_osd_request *ping_req; |
318 | unsigned long ping_sent; |
319 | unsigned long watch_valid_thru; |
320 | struct list_head pending_lworks; |
321 | |
322 | struct ceph_osd_request_target t; |
323 | u32 map_dne_bound; |
324 | |
325 | struct timespec64 mtime; |
326 | |
327 | struct kref kref; |
328 | struct mutex lock; |
329 | struct rb_node node; /* osd */ |
330 | struct rb_node osdc_node; /* osdc */ |
331 | struct rb_node mc_node; /* map check */ |
332 | struct list_head scan_item; |
333 | |
334 | struct completion reg_commit_wait; |
335 | struct completion notify_finish_wait; |
336 | int reg_commit_error; |
337 | int notify_finish_error; |
338 | int last_error; |
339 | |
340 | u32 register_gen; |
341 | u64 notify_id; |
342 | |
343 | rados_watchcb2_t wcb; |
344 | rados_watcherrcb_t errcb; |
345 | void *data; |
346 | |
347 | struct ceph_pagelist *request_pl; |
348 | struct page **notify_id_pages; |
349 | |
350 | struct page ***preply_pages; |
351 | size_t *preply_len; |
352 | }; |
353 | |
354 | struct ceph_watch_item { |
355 | struct ceph_entity_name name; |
356 | u64 cookie; |
357 | struct ceph_entity_addr addr; |
358 | }; |
359 | |
360 | struct ceph_spg_mapping { |
361 | struct rb_node node; |
362 | struct ceph_spg spgid; |
363 | |
364 | struct rb_root backoffs; |
365 | }; |
366 | |
367 | struct ceph_hobject_id { |
368 | void *key; |
369 | size_t key_len; |
370 | void *oid; |
371 | size_t oid_len; |
372 | u64 snapid; |
373 | u32 hash; |
374 | u8 is_max; |
375 | void *nspace; |
376 | size_t nspace_len; |
377 | s64 pool; |
378 | |
379 | /* cache */ |
380 | u32 hash_reverse_bits; |
381 | }; |
382 | |
383 | static inline void ceph_hoid_build_hash_cache(struct ceph_hobject_id *hoid) |
384 | { |
385 | hoid->hash_reverse_bits = bitrev32(hoid->hash); |
386 | } |
387 | |
388 | /* |
389 | * PG-wide backoff: [begin, end) |
390 | * per-object backoff: begin == end |
391 | */ |
392 | struct ceph_osd_backoff { |
393 | struct rb_node spg_node; |
394 | struct rb_node id_node; |
395 | |
396 | struct ceph_spg spgid; |
397 | u64 id; |
398 | struct ceph_hobject_id *begin; |
399 | struct ceph_hobject_id *end; |
400 | }; |
401 | |
402 | #define CEPH_LINGER_ID_START 0xffff000000000000ULL |
403 | |
404 | struct ceph_osd_client { |
405 | struct ceph_client *client; |
406 | |
407 | struct ceph_osdmap *osdmap; /* current map */ |
408 | struct rw_semaphore lock; |
409 | |
410 | struct rb_root osds; /* osds */ |
411 | struct list_head osd_lru; /* idle osds */ |
412 | spinlock_t osd_lru_lock; |
413 | u32 epoch_barrier; |
414 | struct ceph_osd homeless_osd; |
415 | atomic64_t last_tid; /* tid of last request */ |
416 | u64 last_linger_id; |
417 | struct rb_root linger_requests; /* lingering requests */ |
418 | struct rb_root map_checks; |
419 | struct rb_root linger_map_checks; |
420 | atomic_t num_requests; |
421 | atomic_t num_homeless; |
422 | int abort_err; |
423 | struct delayed_work timeout_work; |
424 | struct delayed_work osds_timeout_work; |
425 | #ifdef CONFIG_DEBUG_FS |
426 | struct dentry *debugfs_file; |
427 | #endif |
428 | |
429 | mempool_t *req_mempool; |
430 | |
431 | struct ceph_msgpool msgpool_op; |
432 | struct ceph_msgpool msgpool_op_reply; |
433 | |
434 | struct workqueue_struct *notify_wq; |
435 | struct workqueue_struct *completion_wq; |
436 | }; |
437 | |
438 | static inline bool ceph_osdmap_flag(struct ceph_osd_client *osdc, int flag) |
439 | { |
440 | return osdc->osdmap->flags & flag; |
441 | } |
442 | |
443 | extern int ceph_osdc_setup(void); |
444 | extern void ceph_osdc_cleanup(void); |
445 | |
446 | extern int ceph_osdc_init(struct ceph_osd_client *osdc, |
447 | struct ceph_client *client); |
448 | extern void ceph_osdc_stop(struct ceph_osd_client *osdc); |
449 | extern void ceph_osdc_reopen_osds(struct ceph_osd_client *osdc); |
450 | |
451 | extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, |
452 | struct ceph_msg *msg); |
453 | extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, |
454 | struct ceph_msg *msg); |
455 | void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb); |
456 | void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err); |
457 | void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc); |
458 | |
459 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
460 | ({ \ |
461 | struct ceph_osd_request *__oreq = (oreq); \ |
462 | unsigned int __whch = (whch); \ |
463 | BUG_ON(__whch >= __oreq->r_num_ops); \ |
464 | &__oreq->r_ops[__whch].typ.fld; \ |
465 | }) |
466 | |
467 | struct ceph_osd_req_op *osd_req_op_init(struct ceph_osd_request *osd_req, |
468 | unsigned int which, u16 opcode, u32 flags); |
469 | |
470 | extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *, |
471 | unsigned int which, |
472 | struct page **pages, u64 length, |
473 | u32 alignment, bool pages_from_pool, |
474 | bool own_pages); |
475 | |
476 | extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
477 | unsigned int which, u16 opcode, |
478 | u64 offset, u64 length, |
479 | u64 truncate_size, u32 truncate_seq); |
480 | extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
481 | unsigned int which, u64 length); |
482 | extern void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
483 | unsigned int which, u64 offset_inc); |
484 | |
485 | extern struct ceph_osd_data *osd_req_op_extent_osd_data( |
486 | struct ceph_osd_request *osd_req, |
487 | unsigned int which); |
488 | |
489 | extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *, |
490 | unsigned int which, |
491 | struct page **pages, u64 length, |
492 | u32 alignment, bool pages_from_pool, |
493 | bool own_pages); |
494 | extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *, |
495 | unsigned int which, |
496 | struct ceph_pagelist *pagelist); |
497 | #ifdef CONFIG_BLOCK |
498 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, |
499 | unsigned int which, |
500 | struct ceph_bio_iter *bio_pos, |
501 | u32 bio_length); |
502 | #endif /* CONFIG_BLOCK */ |
503 | void osd_req_op_extent_osd_data_bvecs(struct ceph_osd_request *osd_req, |
504 | unsigned int which, |
505 | struct bio_vec *bvecs, u32 num_bvecs, |
506 | u32 bytes); |
507 | void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, |
508 | unsigned int which, |
509 | struct ceph_bvec_iter *bvec_pos); |
510 | void osd_req_op_extent_osd_iter(struct ceph_osd_request *osd_req, |
511 | unsigned int which, struct iov_iter *iter); |
512 | |
513 | extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *, |
514 | unsigned int which, |
515 | struct ceph_pagelist *pagelist); |
516 | extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *, |
517 | unsigned int which, |
518 | struct page **pages, u64 length, |
519 | u32 alignment, bool pages_from_pool, |
520 | bool own_pages); |
521 | void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, |
522 | unsigned int which, |
523 | struct bio_vec *bvecs, u32 num_bvecs, |
524 | u32 bytes); |
525 | extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *, |
526 | unsigned int which, |
527 | struct page **pages, u64 length, |
528 | u32 alignment, bool pages_from_pool, |
529 | bool own_pages); |
530 | int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
531 | const char *class, const char *method); |
532 | extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
533 | u16 opcode, const char *name, const void *value, |
534 | size_t size, u8 cmp_op, u8 cmp_mode); |
535 | extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
536 | unsigned int which, |
537 | u64 expected_object_size, |
538 | u64 expected_write_size, |
539 | u32 flags); |
540 | extern int osd_req_op_copy_from_init(struct ceph_osd_request *req, |
541 | u64 src_snapid, u64 src_version, |
542 | struct ceph_object_id *src_oid, |
543 | struct ceph_object_locator *src_oloc, |
544 | u32 src_fadvise_flags, |
545 | u32 dst_fadvise_flags, |
546 | u32 truncate_seq, u64 truncate_size, |
547 | u8 copy_from_flags); |
548 | |
549 | extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
550 | struct ceph_snap_context *snapc, |
551 | unsigned int num_ops, |
552 | bool use_mempool, |
553 | gfp_t gfp_flags); |
554 | int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp); |
555 | |
556 | extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, |
557 | struct ceph_file_layout *layout, |
558 | struct ceph_vino vino, |
559 | u64 offset, u64 *len, |
560 | unsigned int which, int num_ops, |
561 | int opcode, int flags, |
562 | struct ceph_snap_context *snapc, |
563 | u32 truncate_seq, u64 truncate_size, |
564 | bool use_mempool); |
565 | |
566 | int __ceph_alloc_sparse_ext_map(struct ceph_osd_req_op *op, int cnt); |
567 | |
568 | /* |
569 | * How big an extent array should we preallocate for a sparse read? This is |
570 | * just a starting value. If we get more than this back from the OSD, the |
571 | * receiver will reallocate. |
572 | */ |
573 | #define CEPH_SPARSE_EXT_ARRAY_INITIAL 16 |
574 | |
575 | static inline int ceph_alloc_sparse_ext_map(struct ceph_osd_req_op *op) |
576 | { |
577 | return __ceph_alloc_sparse_ext_map(op, CEPH_SPARSE_EXT_ARRAY_INITIAL); |
578 | } |
579 | |
580 | extern void ceph_osdc_get_request(struct ceph_osd_request *req); |
581 | extern void ceph_osdc_put_request(struct ceph_osd_request *req); |
582 | |
583 | void ceph_osdc_start_request(struct ceph_osd_client *osdc, |
584 | struct ceph_osd_request *req); |
585 | extern void ceph_osdc_cancel_request(struct ceph_osd_request *req); |
586 | extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc, |
587 | struct ceph_osd_request *req); |
588 | extern void ceph_osdc_sync(struct ceph_osd_client *osdc); |
589 | |
590 | extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc); |
591 | void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc); |
592 | |
593 | int ceph_osdc_call(struct ceph_osd_client *osdc, |
594 | struct ceph_object_id *oid, |
595 | struct ceph_object_locator *oloc, |
596 | const char *class, const char *method, |
597 | unsigned int flags, |
598 | struct page *req_page, size_t req_len, |
599 | struct page **resp_pages, size_t *resp_len); |
600 | |
601 | /* watch/notify */ |
602 | struct ceph_osd_linger_request * |
603 | ceph_osdc_watch(struct ceph_osd_client *osdc, |
604 | struct ceph_object_id *oid, |
605 | struct ceph_object_locator *oloc, |
606 | rados_watchcb2_t wcb, |
607 | rados_watcherrcb_t errcb, |
608 | void *data); |
609 | int ceph_osdc_unwatch(struct ceph_osd_client *osdc, |
610 | struct ceph_osd_linger_request *lreq); |
611 | |
612 | int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, |
613 | struct ceph_object_id *oid, |
614 | struct ceph_object_locator *oloc, |
615 | u64 notify_id, |
616 | u64 cookie, |
617 | void *payload, |
618 | u32 payload_len); |
619 | int ceph_osdc_notify(struct ceph_osd_client *osdc, |
620 | struct ceph_object_id *oid, |
621 | struct ceph_object_locator *oloc, |
622 | void *payload, |
623 | u32 payload_len, |
624 | u32 timeout, |
625 | struct page ***preply_pages, |
626 | size_t *preply_len); |
627 | int ceph_osdc_watch_check(struct ceph_osd_client *osdc, |
628 | struct ceph_osd_linger_request *lreq); |
629 | int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, |
630 | struct ceph_object_id *oid, |
631 | struct ceph_object_locator *oloc, |
632 | struct ceph_watch_item **watchers, |
633 | u32 *num_watchers); |
634 | |
635 | /* Find offset into the buffer of the end of the extent map */ |
636 | static inline u64 ceph_sparse_ext_map_end(struct ceph_osd_req_op *op) |
637 | { |
638 | struct ceph_sparse_extent *ext; |
639 | |
640 | /* No extents? No data */ |
641 | if (op->extent.sparse_ext_cnt == 0) |
642 | return 0; |
643 | |
644 | ext = &op->extent.sparse_ext[op->extent.sparse_ext_cnt - 1]; |
645 | |
646 | return ext->off + ext->len - op->extent.offset; |
647 | } |
648 | |
649 | #endif |
650 | |