1
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
12#include <linux/ceph/types.h>
13#include <linux/ceph/osdmap.h>
14#include <linux/ceph/messenger.h>
15#include <linux/ceph/msgpool.h>
16#include <linux/ceph/auth.h>
17#include <linux/ceph/pagelist.h>
18
19struct ceph_msg;
20struct ceph_snap_context;
21struct ceph_osd_request;
22struct ceph_osd_client;
23
24
25
26
27typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *);
28
29#define CEPH_HOMELESS_OSD -1
30
31
32struct ceph_osd {
33 refcount_t o_ref;
34 struct ceph_osd_client *o_osdc;
35 int o_osd;
36 int o_incarnation;
37 struct rb_node o_node;
38 struct ceph_connection o_con;
39 struct rb_root o_requests;
40 struct rb_root o_linger_requests;
41 struct rb_root o_backoff_mappings;
42 struct rb_root o_backoffs_by_id;
43 struct list_head o_osd_lru;
44 struct ceph_auth_handshake o_auth;
45 unsigned long lru_ttl;
46 struct list_head o_keepalive_item;
47 struct mutex lock;
48};
49
50#define CEPH_OSD_SLAB_OPS 2
51#define CEPH_OSD_MAX_OPS 16
52
53enum ceph_osd_data_type {
54 CEPH_OSD_DATA_TYPE_NONE = 0,
55 CEPH_OSD_DATA_TYPE_PAGES,
56 CEPH_OSD_DATA_TYPE_PAGELIST,
57#ifdef CONFIG_BLOCK
58 CEPH_OSD_DATA_TYPE_BIO,
59#endif
60};
61
62struct ceph_osd_data {
63 enum ceph_osd_data_type type;
64 union {
65 struct {
66 struct page **pages;
67 u64 length;
68 u32 alignment;
69 bool pages_from_pool;
70 bool own_pages;
71 };
72 struct ceph_pagelist *pagelist;
73#ifdef CONFIG_BLOCK
74 struct {
75 struct bio *bio;
76 size_t bio_length;
77 };
78#endif
79 };
80};
81
82struct ceph_osd_req_op {
83 u16 op;
84 u32 flags;
85 u32 indata_len;
86 u32 outdata_len;
87 s32 rval;
88
89 union {
90 struct ceph_osd_data raw_data_in;
91 struct {
92 u64 offset, length;
93 u64 truncate_size;
94 u32 truncate_seq;
95 struct ceph_osd_data osd_data;
96 } extent;
97 struct {
98 u32 name_len;
99 u32 value_len;
100 __u8 cmp_op;
101 __u8 cmp_mode;
102 struct ceph_osd_data osd_data;
103 } xattr;
104 struct {
105 const char *class_name;
106 const char *method_name;
107 struct ceph_osd_data request_info;
108 struct ceph_osd_data request_data;
109 struct ceph_osd_data response_data;
110 __u8 class_len;
111 __u8 method_len;
112 u32 indata_len;
113 } cls;
114 struct {
115 u64 cookie;
116 __u8 op;
117 u32 gen;
118 } watch;
119 struct {
120 struct ceph_osd_data request_data;
121 } notify_ack;
122 struct {
123 u64 cookie;
124 struct ceph_osd_data request_data;
125 struct ceph_osd_data response_data;
126 } notify;
127 struct {
128 struct ceph_osd_data response_data;
129 } list_watchers;
130 struct {
131 u64 expected_object_size;
132 u64 expected_write_size;
133 } alloc_hint;
134 };
135};
136
137struct ceph_osd_request_target {
138 struct ceph_object_id base_oid;
139 struct ceph_object_locator base_oloc;
140 struct ceph_object_id target_oid;
141 struct ceph_object_locator target_oloc;
142
143 struct ceph_pg pgid;
144 struct ceph_spg spgid;
145 u32 pg_num;
146 u32 pg_num_mask;
147 struct ceph_osds acting;
148 struct ceph_osds up;
149 int size;
150 int min_size;
151 bool sort_bitwise;
152 bool recovery_deletes;
153
154 unsigned int flags;
155 bool paused;
156
157 u32 epoch;
158 u32 last_force_resend;
159
160 int osd;
161};
162
163
164struct ceph_osd_request {
165 u64 r_tid;
166 struct rb_node r_node;
167 struct rb_node r_mc_node;
168 struct ceph_osd *r_osd;
169
170 struct ceph_osd_request_target r_t;
171#define r_base_oid r_t.base_oid
172#define r_base_oloc r_t.base_oloc
173#define r_flags r_t.flags
174
175 struct ceph_msg *r_request, *r_reply;
176 u32 r_sent;
177
178
179 unsigned int r_num_ops;
180
181 int r_result;
182
183 struct ceph_osd_client *r_osdc;
184 struct kref r_kref;
185 bool r_mempool;
186 struct completion r_completion;
187 ceph_osdc_callback_t r_callback;
188 struct list_head r_unsafe_item;
189
190 struct inode *r_inode;
191 void *r_priv;
192
193
194 u64 r_snapid;
195 struct ceph_snap_context *r_snapc;
196 struct timespec r_mtime;
197 u64 r_data_offset;
198 bool r_linger;
199 bool r_abort_on_full;
200
201
202 unsigned long r_stamp;
203 unsigned long r_start_stamp;
204 int r_attempts;
205 u32 r_map_dne_bound;
206
207 struct ceph_osd_req_op r_ops[];
208};
209
210struct ceph_request_redirect {
211 struct ceph_object_locator oloc;
212};
213
214
215
216
217
218
219struct ceph_osd_reqid {
220 struct ceph_entity_name name;
221 __le64 tid;
222 __le32 inc;
223} __packed;
224
225struct ceph_blkin_trace_info {
226 __le64 trace_id;
227 __le64 span_id;
228 __le64 parent_span_id;
229} __packed;
230
231typedef void (*rados_watchcb2_t)(void *arg, u64 notify_id, u64 cookie,
232 u64 notifier_id, void *data, size_t data_len);
233typedef void (*rados_watcherrcb_t)(void *arg, u64 cookie, int err);
234
235struct ceph_osd_linger_request {
236 struct ceph_osd_client *osdc;
237 u64 linger_id;
238 bool committed;
239 bool is_watch;
240
241 struct ceph_osd *osd;
242 struct ceph_osd_request *reg_req;
243 struct ceph_osd_request *ping_req;
244 unsigned long ping_sent;
245 unsigned long watch_valid_thru;
246 struct list_head pending_lworks;
247
248 struct ceph_osd_request_target t;
249 u32 map_dne_bound;
250
251 struct timespec mtime;
252
253 struct kref kref;
254 struct mutex lock;
255 struct rb_node node;
256 struct rb_node osdc_node;
257 struct rb_node mc_node;
258 struct list_head scan_item;
259
260 struct completion reg_commit_wait;
261 struct completion notify_finish_wait;
262 int reg_commit_error;
263 int notify_finish_error;
264 int last_error;
265
266 u32 register_gen;
267 u64 notify_id;
268
269 rados_watchcb2_t wcb;
270 rados_watcherrcb_t errcb;
271 void *data;
272
273 struct page ***preply_pages;
274 size_t *preply_len;
275};
276
277struct ceph_watch_item {
278 struct ceph_entity_name name;
279 u64 cookie;
280 struct ceph_entity_addr addr;
281};
282
283struct ceph_spg_mapping {
284 struct rb_node node;
285 struct ceph_spg spgid;
286
287 struct rb_root backoffs;
288};
289
290struct ceph_hobject_id {
291 void *key;
292 size_t key_len;
293 void *oid;
294 size_t oid_len;
295 u64 snapid;
296 u32 hash;
297 u8 is_max;
298 void *nspace;
299 size_t nspace_len;
300 s64 pool;
301
302
303 u32 hash_reverse_bits;
304};
305
306static inline void ceph_hoid_build_hash_cache(struct ceph_hobject_id *hoid)
307{
308 hoid->hash_reverse_bits = bitrev32(hoid->hash);
309}
310
311
312
313
314
315struct ceph_osd_backoff {
316 struct rb_node spg_node;
317 struct rb_node id_node;
318
319 struct ceph_spg spgid;
320 u64 id;
321 struct ceph_hobject_id *begin;
322 struct ceph_hobject_id *end;
323};
324
325#define CEPH_LINGER_ID_START 0xffff000000000000ULL
326
327struct ceph_osd_client {
328 struct ceph_client *client;
329
330 struct ceph_osdmap *osdmap;
331 struct rw_semaphore lock;
332
333 struct rb_root osds;
334 struct list_head osd_lru;
335 spinlock_t osd_lru_lock;
336 u32 epoch_barrier;
337 struct ceph_osd homeless_osd;
338 atomic64_t last_tid;
339 u64 last_linger_id;
340 struct rb_root linger_requests;
341 struct rb_root map_checks;
342 struct rb_root linger_map_checks;
343 atomic_t num_requests;
344 atomic_t num_homeless;
345 struct delayed_work timeout_work;
346 struct delayed_work osds_timeout_work;
347#ifdef CONFIG_DEBUG_FS
348 struct dentry *debugfs_file;
349#endif
350
351 mempool_t *req_mempool;
352
353 struct ceph_msgpool msgpool_op;
354 struct ceph_msgpool msgpool_op_reply;
355
356 struct workqueue_struct *notify_wq;
357};
358
359static inline bool ceph_osdmap_flag(struct ceph_osd_client *osdc, int flag)
360{
361 return osdc->osdmap->flags & flag;
362}
363
364extern int ceph_osdc_setup(void);
365extern void ceph_osdc_cleanup(void);
366
367extern int ceph_osdc_init(struct ceph_osd_client *osdc,
368 struct ceph_client *client);
369extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
370
371extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
372 struct ceph_msg *msg);
373extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
374 struct ceph_msg *msg);
375void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb);
376
377extern void osd_req_op_init(struct ceph_osd_request *osd_req,
378 unsigned int which, u16 opcode, u32 flags);
379
380extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *,
381 unsigned int which,
382 struct page **pages, u64 length,
383 u32 alignment, bool pages_from_pool,
384 bool own_pages);
385
386extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
387 unsigned int which, u16 opcode,
388 u64 offset, u64 length,
389 u64 truncate_size, u32 truncate_seq);
390extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
391 unsigned int which, u64 length);
392extern void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req,
393 unsigned int which, u64 offset_inc);
394
395extern struct ceph_osd_data *osd_req_op_extent_osd_data(
396 struct ceph_osd_request *osd_req,
397 unsigned int which);
398
399extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *,
400 unsigned int which,
401 struct page **pages, u64 length,
402 u32 alignment, bool pages_from_pool,
403 bool own_pages);
404extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *,
405 unsigned int which,
406 struct ceph_pagelist *pagelist);
407#ifdef CONFIG_BLOCK
408extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *,
409 unsigned int which,
410 struct bio *bio, size_t bio_length);
411#endif
412
413extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *,
414 unsigned int which,
415 struct ceph_pagelist *pagelist);
416extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *,
417 unsigned int which,
418 struct page **pages, u64 length,
419 u32 alignment, bool pages_from_pool,
420 bool own_pages);
421extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
422 unsigned int which,
423 struct page **pages, u64 length,
424 u32 alignment, bool pages_from_pool,
425 bool own_pages);
426extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
427 unsigned int which, u16 opcode,
428 const char *class, const char *method);
429extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
430 u16 opcode, const char *name, const void *value,
431 size_t size, u8 cmp_op, u8 cmp_mode);
432extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
433 unsigned int which,
434 u64 expected_object_size,
435 u64 expected_write_size);
436
437extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
438 struct ceph_snap_context *snapc,
439 unsigned int num_ops,
440 bool use_mempool,
441 gfp_t gfp_flags);
442int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp);
443
444extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
445 struct ceph_file_layout *layout,
446 struct ceph_vino vino,
447 u64 offset, u64 *len,
448 unsigned int which, int num_ops,
449 int opcode, int flags,
450 struct ceph_snap_context *snapc,
451 u32 truncate_seq, u64 truncate_size,
452 bool use_mempool);
453
454extern void ceph_osdc_get_request(struct ceph_osd_request *req);
455extern void ceph_osdc_put_request(struct ceph_osd_request *req);
456
457extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
458 struct ceph_osd_request *req,
459 bool nofail);
460extern void ceph_osdc_cancel_request(struct ceph_osd_request *req);
461extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
462 struct ceph_osd_request *req);
463extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
464
465extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc);
466void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc);
467
468int ceph_osdc_call(struct ceph_osd_client *osdc,
469 struct ceph_object_id *oid,
470 struct ceph_object_locator *oloc,
471 const char *class, const char *method,
472 unsigned int flags,
473 struct page *req_page, size_t req_len,
474 struct page *resp_page, size_t *resp_len);
475
476extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
477 struct ceph_vino vino,
478 struct ceph_file_layout *layout,
479 u64 off, u64 *plen,
480 u32 truncate_seq, u64 truncate_size,
481 struct page **pages, int nr_pages,
482 int page_align);
483
484extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
485 struct ceph_vino vino,
486 struct ceph_file_layout *layout,
487 struct ceph_snap_context *sc,
488 u64 off, u64 len,
489 u32 truncate_seq, u64 truncate_size,
490 struct timespec *mtime,
491 struct page **pages, int nr_pages);
492
493
494struct ceph_osd_linger_request *
495ceph_osdc_watch(struct ceph_osd_client *osdc,
496 struct ceph_object_id *oid,
497 struct ceph_object_locator *oloc,
498 rados_watchcb2_t wcb,
499 rados_watcherrcb_t errcb,
500 void *data);
501int ceph_osdc_unwatch(struct ceph_osd_client *osdc,
502 struct ceph_osd_linger_request *lreq);
503
504int ceph_osdc_notify_ack(struct ceph_osd_client *osdc,
505 struct ceph_object_id *oid,
506 struct ceph_object_locator *oloc,
507 u64 notify_id,
508 u64 cookie,
509 void *payload,
510 size_t payload_len);
511int ceph_osdc_notify(struct ceph_osd_client *osdc,
512 struct ceph_object_id *oid,
513 struct ceph_object_locator *oloc,
514 void *payload,
515 size_t payload_len,
516 u32 timeout,
517 struct page ***preply_pages,
518 size_t *preply_len);
519int ceph_osdc_watch_check(struct ceph_osd_client *osdc,
520 struct ceph_osd_linger_request *lreq);
521int ceph_osdc_list_watchers(struct ceph_osd_client *osdc,
522 struct ceph_object_id *oid,
523 struct ceph_object_locator *oloc,
524 struct ceph_watch_item **watchers,
525 u32 *num_watchers);
526#endif
527
528
