1 #ifndef _FS_CEPH_OSD_CLIENT_H
2 #define _FS_CEPH_OSD_CLIENT_H
4 #include <linux/completion.h>
5 #include <linux/kref.h>
6 #include <linux/mempool.h>
7 #include <linux/rbtree.h>
9 #include <linux/ceph/types.h>
10 #include <linux/ceph/osdmap.h>
11 #include <linux/ceph/messenger.h>
12 #include <linux/ceph/msgpool.h>
13 #include <linux/ceph/auth.h>
14 #include <linux/ceph/pagelist.h>
17 struct ceph_snap_context
;
18 struct ceph_osd_request
;
19 struct ceph_osd_client
;
22 * completion callback for async writepages
24 typedef void (*ceph_osdc_callback_t
)(struct ceph_osd_request
*);
26 #define CEPH_HOMELESS_OSD -1
28 /* a given osd we're communicating with */
31 struct ceph_osd_client
*o_osdc
;
34 struct rb_node o_node
;
35 struct ceph_connection o_con
;
36 struct rb_root o_requests
;
37 struct rb_root o_linger_requests
;
38 struct list_head o_osd_lru
;
39 struct ceph_auth_handshake o_auth
;
40 unsigned long lru_ttl
;
41 struct list_head o_keepalive_item
;
45 #define CEPH_OSD_SLAB_OPS 2
46 #define CEPH_OSD_MAX_OPS 16
48 enum ceph_osd_data_type
{
49 CEPH_OSD_DATA_TYPE_NONE
= 0,
50 CEPH_OSD_DATA_TYPE_PAGES
,
51 CEPH_OSD_DATA_TYPE_PAGELIST
,
53 CEPH_OSD_DATA_TYPE_BIO
,
54 #endif /* CONFIG_BLOCK */
57 struct ceph_osd_data
{
58 enum ceph_osd_data_type type
;
67 struct ceph_pagelist
*pagelist
;
70 struct bio
*bio
; /* list of bios */
71 size_t bio_length
; /* total in list */
73 #endif /* CONFIG_BLOCK */
77 struct ceph_osd_req_op
{
78 u16 op
; /* CEPH_OSD_OP_* */
79 u32 flags
; /* CEPH_OSD_OP_FLAG_* */
80 u32 indata_len
; /* request */
81 u32 outdata_len
; /* reply */
85 struct ceph_osd_data raw_data_in
;
90 struct ceph_osd_data osd_data
;
95 __u8 cmp_op
; /* CEPH_OSD_CMPXATTR_OP_* */
96 __u8 cmp_mode
; /* CEPH_OSD_CMPXATTR_MODE_* */
97 struct ceph_osd_data osd_data
;
100 const char *class_name
;
101 const char *method_name
;
102 struct ceph_osd_data request_info
;
103 struct ceph_osd_data request_data
;
104 struct ceph_osd_data response_data
;
111 __u8 op
; /* CEPH_OSD_WATCH_OP_ */
115 struct ceph_osd_data request_data
;
119 struct ceph_osd_data request_data
;
120 struct ceph_osd_data response_data
;
123 struct ceph_osd_data response_data
;
126 u64 expected_object_size
;
127 u64 expected_write_size
;
132 struct ceph_osd_request_target
{
133 struct ceph_object_id base_oid
;
134 struct ceph_object_locator base_oloc
;
135 struct ceph_object_id target_oid
;
136 struct ceph_object_locator target_oloc
;
141 struct ceph_osds acting
;
147 unsigned int flags
; /* CEPH_OSD_FLAG_* */
153 /* an in-flight request */
154 struct ceph_osd_request
{
155 u64 r_tid
; /* unique for this client */
156 struct rb_node r_node
;
157 struct rb_node r_mc_node
; /* map check */
158 struct ceph_osd
*r_osd
;
160 struct ceph_osd_request_target r_t
;
161 #define r_base_oid r_t.base_oid
162 #define r_base_oloc r_t.base_oloc
163 #define r_flags r_t.flags
165 struct ceph_msg
*r_request
, *r_reply
;
166 u32 r_sent
; /* >0 if r_request is sending/sent */
168 /* request osd ops array */
169 unsigned int r_num_ops
;
173 struct ceph_osd_client
*r_osdc
;
176 struct completion r_completion
; /* private to osd_client.c */
177 ceph_osdc_callback_t r_callback
;
178 struct list_head r_unsafe_item
;
180 struct inode
*r_inode
; /* for use by callbacks */
181 void *r_priv
; /* ditto */
183 /* set by submitter */
184 u64 r_snapid
; /* for reads, CEPH_NOSNAP o/w */
185 struct ceph_snap_context
*r_snapc
; /* for writes */
186 struct timespec r_mtime
; /* ditto */
187 u64 r_data_offset
; /* ditto */
188 bool r_linger
; /* don't resend on failure */
191 unsigned long r_stamp
; /* jiffies, send or check time */
193 struct ceph_eversion r_replay_version
; /* aka reassert_version */
194 u32 r_last_force_resend
;
197 struct ceph_osd_req_op r_ops
[];
200 struct ceph_request_redirect
{
201 struct ceph_object_locator oloc
;
204 typedef void (*rados_watchcb2_t
)(void *arg
, u64 notify_id
, u64 cookie
,
205 u64 notifier_id
, void *data
, size_t data_len
);
206 typedef void (*rados_watcherrcb_t
)(void *arg
, u64 cookie
, int err
);
208 struct ceph_osd_linger_request
{
209 struct ceph_osd_client
*osdc
;
212 bool is_watch
; /* watch or notify */
214 struct ceph_osd
*osd
;
215 struct ceph_osd_request
*reg_req
;
216 struct ceph_osd_request
*ping_req
;
217 unsigned long ping_sent
;
218 unsigned long watch_valid_thru
;
219 struct list_head pending_lworks
;
221 struct ceph_osd_request_target t
;
222 u32 last_force_resend
;
225 struct timespec mtime
;
229 struct rb_node node
; /* osd */
230 struct rb_node osdc_node
; /* osdc */
231 struct rb_node mc_node
; /* map check */
232 struct list_head scan_item
;
234 struct completion reg_commit_wait
;
235 struct completion notify_finish_wait
;
236 int reg_commit_error
;
237 int notify_finish_error
;
243 rados_watchcb2_t wcb
;
244 rados_watcherrcb_t errcb
;
247 struct page
***preply_pages
;
251 struct ceph_watch_item
{
252 struct ceph_entity_name name
;
254 struct ceph_entity_addr addr
;
257 #define CEPH_LINGER_ID_START 0xffff000000000000ULL
259 struct ceph_osd_client
{
260 struct ceph_client
*client
;
262 struct ceph_osdmap
*osdmap
; /* current map */
263 struct rw_semaphore lock
;
265 struct rb_root osds
; /* osds */
266 struct list_head osd_lru
; /* idle osds */
267 spinlock_t osd_lru_lock
;
268 struct ceph_osd homeless_osd
;
269 atomic64_t last_tid
; /* tid of last request */
271 struct rb_root linger_requests
; /* lingering requests */
272 struct rb_root map_checks
;
273 struct rb_root linger_map_checks
;
274 atomic_t num_requests
;
275 atomic_t num_homeless
;
276 struct delayed_work timeout_work
;
277 struct delayed_work osds_timeout_work
;
278 #ifdef CONFIG_DEBUG_FS
279 struct dentry
*debugfs_file
;
282 mempool_t
*req_mempool
;
284 struct ceph_msgpool msgpool_op
;
285 struct ceph_msgpool msgpool_op_reply
;
287 struct workqueue_struct
*notify_wq
;
290 static inline bool ceph_osdmap_flag(struct ceph_osd_client
*osdc
, int flag
)
292 return osdc
->osdmap
->flags
& flag
;
295 extern int ceph_osdc_setup(void);
296 extern void ceph_osdc_cleanup(void);
298 extern int ceph_osdc_init(struct ceph_osd_client
*osdc
,
299 struct ceph_client
*client
);
300 extern void ceph_osdc_stop(struct ceph_osd_client
*osdc
);
302 extern void ceph_osdc_handle_reply(struct ceph_osd_client
*osdc
,
303 struct ceph_msg
*msg
);
304 extern void ceph_osdc_handle_map(struct ceph_osd_client
*osdc
,
305 struct ceph_msg
*msg
);
307 extern void osd_req_op_init(struct ceph_osd_request
*osd_req
,
308 unsigned int which
, u16 opcode
, u32 flags
);
310 extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request
*,
312 struct page
**pages
, u64 length
,
313 u32 alignment
, bool pages_from_pool
,
316 extern void osd_req_op_extent_init(struct ceph_osd_request
*osd_req
,
317 unsigned int which
, u16 opcode
,
318 u64 offset
, u64 length
,
319 u64 truncate_size
, u32 truncate_seq
);
320 extern void osd_req_op_extent_update(struct ceph_osd_request
*osd_req
,
321 unsigned int which
, u64 length
);
322 extern void osd_req_op_extent_dup_last(struct ceph_osd_request
*osd_req
,
323 unsigned int which
, u64 offset_inc
);
325 extern struct ceph_osd_data
*osd_req_op_extent_osd_data(
326 struct ceph_osd_request
*osd_req
,
329 extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request
*,
331 struct page
**pages
, u64 length
,
332 u32 alignment
, bool pages_from_pool
,
334 extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request
*,
336 struct ceph_pagelist
*pagelist
);
338 extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request
*,
340 struct bio
*bio
, size_t bio_length
);
341 #endif /* CONFIG_BLOCK */
343 extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request
*,
345 struct ceph_pagelist
*pagelist
);
346 extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request
*,
348 struct page
**pages
, u64 length
,
349 u32 alignment
, bool pages_from_pool
,
351 extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request
*,
353 struct page
**pages
, u64 length
,
354 u32 alignment
, bool pages_from_pool
,
356 extern void osd_req_op_cls_init(struct ceph_osd_request
*osd_req
,
357 unsigned int which
, u16 opcode
,
358 const char *class, const char *method
);
359 extern int osd_req_op_xattr_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
360 u16 opcode
, const char *name
, const void *value
,
361 size_t size
, u8 cmp_op
, u8 cmp_mode
);
362 extern void osd_req_op_alloc_hint_init(struct ceph_osd_request
*osd_req
,
364 u64 expected_object_size
,
365 u64 expected_write_size
);
367 extern struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client
*osdc
,
368 struct ceph_snap_context
*snapc
,
369 unsigned int num_ops
,
372 int ceph_osdc_alloc_messages(struct ceph_osd_request
*req
, gfp_t gfp
);
374 extern struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client
*,
375 struct ceph_file_layout
*layout
,
376 struct ceph_vino vino
,
377 u64 offset
, u64
*len
,
378 unsigned int which
, int num_ops
,
379 int opcode
, int flags
,
380 struct ceph_snap_context
*snapc
,
381 u32 truncate_seq
, u64 truncate_size
,
384 extern void ceph_osdc_get_request(struct ceph_osd_request
*req
);
385 extern void ceph_osdc_put_request(struct ceph_osd_request
*req
);
387 extern int ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
388 struct ceph_osd_request
*req
,
390 extern void ceph_osdc_cancel_request(struct ceph_osd_request
*req
);
391 extern int ceph_osdc_wait_request(struct ceph_osd_client
*osdc
,
392 struct ceph_osd_request
*req
);
393 extern void ceph_osdc_sync(struct ceph_osd_client
*osdc
);
395 extern void ceph_osdc_flush_notifies(struct ceph_osd_client
*osdc
);
396 void ceph_osdc_maybe_request_map(struct ceph_osd_client
*osdc
);
398 int ceph_osdc_call(struct ceph_osd_client
*osdc
,
399 struct ceph_object_id
*oid
,
400 struct ceph_object_locator
*oloc
,
401 const char *class, const char *method
,
403 struct page
*req_page
, size_t req_len
,
404 struct page
*resp_page
, size_t *resp_len
);
406 extern int ceph_osdc_readpages(struct ceph_osd_client
*osdc
,
407 struct ceph_vino vino
,
408 struct ceph_file_layout
*layout
,
410 u32 truncate_seq
, u64 truncate_size
,
411 struct page
**pages
, int nr_pages
,
414 extern int ceph_osdc_writepages(struct ceph_osd_client
*osdc
,
415 struct ceph_vino vino
,
416 struct ceph_file_layout
*layout
,
417 struct ceph_snap_context
*sc
,
419 u32 truncate_seq
, u64 truncate_size
,
420 struct timespec
*mtime
,
421 struct page
**pages
, int nr_pages
);
424 struct ceph_osd_linger_request
*
425 ceph_osdc_watch(struct ceph_osd_client
*osdc
,
426 struct ceph_object_id
*oid
,
427 struct ceph_object_locator
*oloc
,
428 rados_watchcb2_t wcb
,
429 rados_watcherrcb_t errcb
,
431 int ceph_osdc_unwatch(struct ceph_osd_client
*osdc
,
432 struct ceph_osd_linger_request
*lreq
);
434 int ceph_osdc_notify_ack(struct ceph_osd_client
*osdc
,
435 struct ceph_object_id
*oid
,
436 struct ceph_object_locator
*oloc
,
441 int ceph_osdc_notify(struct ceph_osd_client
*osdc
,
442 struct ceph_object_id
*oid
,
443 struct ceph_object_locator
*oloc
,
447 struct page
***preply_pages
,
449 int ceph_osdc_watch_check(struct ceph_osd_client
*osdc
,
450 struct ceph_osd_linger_request
*lreq
);
451 int ceph_osdc_list_watchers(struct ceph_osd_client
*osdc
,
452 struct ceph_object_id
*oid
,
453 struct ceph_object_locator
*oloc
,
454 struct ceph_watch_item
**watchers
,