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
*);
25 typedef void (*ceph_osdc_unsafe_callback_t
)(struct ceph_osd_request
*, bool);
27 #define CEPH_HOMELESS_OSD -1
29 /* a given osd we're communicating with */
32 struct ceph_osd_client
*o_osdc
;
35 struct rb_node o_node
;
36 struct ceph_connection o_con
;
37 struct rb_root o_requests
;
38 struct rb_root o_linger_requests
;
39 struct list_head o_osd_lru
;
40 struct ceph_auth_handshake o_auth
;
41 unsigned long lru_ttl
;
42 struct list_head o_keepalive_item
;
46 #define CEPH_OSD_SLAB_OPS 2
47 #define CEPH_OSD_MAX_OPS 16
49 enum ceph_osd_data_type
{
50 CEPH_OSD_DATA_TYPE_NONE
= 0,
51 CEPH_OSD_DATA_TYPE_PAGES
,
52 CEPH_OSD_DATA_TYPE_PAGELIST
,
54 CEPH_OSD_DATA_TYPE_BIO
,
55 #endif /* CONFIG_BLOCK */
58 struct ceph_osd_data
{
59 enum ceph_osd_data_type type
;
68 struct ceph_pagelist
*pagelist
;
71 struct bio
*bio
; /* list of bios */
72 size_t bio_length
; /* total in list */
74 #endif /* CONFIG_BLOCK */
78 struct ceph_osd_req_op
{
79 u16 op
; /* CEPH_OSD_OP_* */
80 u32 flags
; /* CEPH_OSD_OP_FLAG_* */
81 u32 indata_len
; /* request */
82 u32 outdata_len
; /* reply */
86 struct ceph_osd_data raw_data_in
;
91 struct ceph_osd_data osd_data
;
96 __u8 cmp_op
; /* CEPH_OSD_CMPXATTR_OP_* */
97 __u8 cmp_mode
; /* CEPH_OSD_CMPXATTR_MODE_* */
98 struct ceph_osd_data osd_data
;
101 const char *class_name
;
102 const char *method_name
;
103 struct ceph_osd_data request_info
;
104 struct ceph_osd_data request_data
;
105 struct ceph_osd_data response_data
;
112 __u8 op
; /* CEPH_OSD_WATCH_OP_ */
116 struct ceph_osd_data request_data
;
120 struct ceph_osd_data request_data
;
121 struct ceph_osd_data response_data
;
124 u64 expected_object_size
;
125 u64 expected_write_size
;
130 struct ceph_osd_request_target
{
131 struct ceph_object_id base_oid
;
132 struct ceph_object_locator base_oloc
;
133 struct ceph_object_id target_oid
;
134 struct ceph_object_locator target_oloc
;
139 struct ceph_osds acting
;
145 unsigned int flags
; /* CEPH_OSD_FLAG_* */
151 /* an in-flight request */
152 struct ceph_osd_request
{
153 u64 r_tid
; /* unique for this client */
154 struct rb_node r_node
;
155 struct rb_node r_mc_node
; /* map check */
156 struct ceph_osd
*r_osd
;
158 struct ceph_osd_request_target r_t
;
159 #define r_base_oid r_t.base_oid
160 #define r_base_oloc r_t.base_oloc
161 #define r_flags r_t.flags
163 struct ceph_msg
*r_request
, *r_reply
;
164 u32 r_sent
; /* >0 if r_request is sending/sent */
166 /* request osd ops array */
167 unsigned int r_num_ops
;
172 struct ceph_osd_client
*r_osdc
;
175 struct completion r_completion
;
176 struct completion r_safe_completion
; /* fsync waiter */
177 ceph_osdc_callback_t r_callback
;
178 ceph_osdc_unsafe_callback_t r_unsafe_callback
;
179 struct list_head r_unsafe_item
;
181 struct inode
*r_inode
; /* for use by callbacks */
182 void *r_priv
; /* ditto */
184 /* set by submitter */
185 u64 r_snapid
; /* for reads, CEPH_NOSNAP o/w */
186 struct ceph_snap_context
*r_snapc
; /* for writes */
187 struct timespec r_mtime
; /* ditto */
188 u64 r_data_offset
; /* ditto */
189 bool r_linger
; /* don't resend on failure */
192 unsigned long r_stamp
; /* jiffies, send or check time */
194 struct ceph_eversion r_replay_version
; /* aka reassert_version */
195 u32 r_last_force_resend
;
198 struct ceph_osd_req_op r_ops
[];
201 struct ceph_request_redirect
{
202 struct ceph_object_locator oloc
;
205 typedef void (*rados_watchcb2_t
)(void *arg
, u64 notify_id
, u64 cookie
,
206 u64 notifier_id
, void *data
, size_t data_len
);
207 typedef void (*rados_watcherrcb_t
)(void *arg
, u64 cookie
, int err
);
209 struct ceph_osd_linger_request
{
210 struct ceph_osd_client
*osdc
;
213 bool is_watch
; /* watch or notify */
215 struct ceph_osd
*osd
;
216 struct ceph_osd_request
*reg_req
;
217 struct ceph_osd_request
*ping_req
;
218 unsigned long ping_sent
;
219 unsigned long watch_valid_thru
;
220 struct list_head pending_lworks
;
222 struct ceph_osd_request_target t
;
223 u32 last_force_resend
;
226 struct timespec mtime
;
230 struct rb_node node
; /* osd */
231 struct rb_node osdc_node
; /* osdc */
232 struct rb_node mc_node
; /* map check */
233 struct list_head scan_item
;
235 struct completion reg_commit_wait
;
236 struct completion notify_finish_wait
;
237 int reg_commit_error
;
238 int notify_finish_error
;
244 rados_watchcb2_t wcb
;
245 rados_watcherrcb_t errcb
;
248 struct page
***preply_pages
;
252 struct ceph_osd_client
{
253 struct ceph_client
*client
;
255 struct ceph_osdmap
*osdmap
; /* current map */
256 struct rw_semaphore lock
;
258 struct rb_root osds
; /* osds */
259 struct list_head osd_lru
; /* idle osds */
260 spinlock_t osd_lru_lock
;
261 struct ceph_osd homeless_osd
;
262 atomic64_t last_tid
; /* tid of last request */
264 struct rb_root linger_requests
; /* lingering requests */
265 struct rb_root map_checks
;
266 struct rb_root linger_map_checks
;
267 atomic_t num_requests
;
268 atomic_t num_homeless
;
269 struct delayed_work timeout_work
;
270 struct delayed_work osds_timeout_work
;
271 #ifdef CONFIG_DEBUG_FS
272 struct dentry
*debugfs_file
;
275 mempool_t
*req_mempool
;
277 struct ceph_msgpool msgpool_op
;
278 struct ceph_msgpool msgpool_op_reply
;
280 struct workqueue_struct
*notify_wq
;
283 static inline bool ceph_osdmap_flag(struct ceph_osd_client
*osdc
, int flag
)
285 return osdc
->osdmap
->flags
& flag
;
288 extern int ceph_osdc_setup(void);
289 extern void ceph_osdc_cleanup(void);
291 extern int ceph_osdc_init(struct ceph_osd_client
*osdc
,
292 struct ceph_client
*client
);
293 extern void ceph_osdc_stop(struct ceph_osd_client
*osdc
);
295 extern void ceph_osdc_handle_reply(struct ceph_osd_client
*osdc
,
296 struct ceph_msg
*msg
);
297 extern void ceph_osdc_handle_map(struct ceph_osd_client
*osdc
,
298 struct ceph_msg
*msg
);
300 extern void osd_req_op_init(struct ceph_osd_request
*osd_req
,
301 unsigned int which
, u16 opcode
, u32 flags
);
303 extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request
*,
305 struct page
**pages
, u64 length
,
306 u32 alignment
, bool pages_from_pool
,
309 extern void osd_req_op_extent_init(struct ceph_osd_request
*osd_req
,
310 unsigned int which
, u16 opcode
,
311 u64 offset
, u64 length
,
312 u64 truncate_size
, u32 truncate_seq
);
313 extern void osd_req_op_extent_update(struct ceph_osd_request
*osd_req
,
314 unsigned int which
, u64 length
);
315 extern void osd_req_op_extent_dup_last(struct ceph_osd_request
*osd_req
,
316 unsigned int which
, u64 offset_inc
);
318 extern struct ceph_osd_data
*osd_req_op_extent_osd_data(
319 struct ceph_osd_request
*osd_req
,
322 extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request
*,
324 struct page
**pages
, u64 length
,
325 u32 alignment
, bool pages_from_pool
,
327 extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request
*,
329 struct ceph_pagelist
*pagelist
);
331 extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request
*,
333 struct bio
*bio
, size_t bio_length
);
334 #endif /* CONFIG_BLOCK */
336 extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request
*,
338 struct ceph_pagelist
*pagelist
);
339 extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request
*,
341 struct page
**pages
, u64 length
,
342 u32 alignment
, bool pages_from_pool
,
344 extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request
*,
346 struct page
**pages
, u64 length
,
347 u32 alignment
, bool pages_from_pool
,
350 extern void osd_req_op_cls_init(struct ceph_osd_request
*osd_req
,
351 unsigned int which
, u16 opcode
,
352 const char *class, const char *method
);
353 extern int osd_req_op_xattr_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
354 u16 opcode
, const char *name
, const void *value
,
355 size_t size
, u8 cmp_op
, u8 cmp_mode
);
356 extern void osd_req_op_alloc_hint_init(struct ceph_osd_request
*osd_req
,
358 u64 expected_object_size
,
359 u64 expected_write_size
);
361 extern struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client
*osdc
,
362 struct ceph_snap_context
*snapc
,
363 unsigned int num_ops
,
366 int ceph_osdc_alloc_messages(struct ceph_osd_request
*req
, gfp_t gfp
);
368 extern struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client
*,
369 struct ceph_file_layout
*layout
,
370 struct ceph_vino vino
,
371 u64 offset
, u64
*len
,
372 unsigned int which
, int num_ops
,
373 int opcode
, int flags
,
374 struct ceph_snap_context
*snapc
,
375 u32 truncate_seq
, u64 truncate_size
,
378 extern void ceph_osdc_get_request(struct ceph_osd_request
*req
);
379 extern void ceph_osdc_put_request(struct ceph_osd_request
*req
);
381 extern int ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
382 struct ceph_osd_request
*req
,
384 extern void ceph_osdc_cancel_request(struct ceph_osd_request
*req
);
385 extern int ceph_osdc_wait_request(struct ceph_osd_client
*osdc
,
386 struct ceph_osd_request
*req
);
387 extern void ceph_osdc_sync(struct ceph_osd_client
*osdc
);
389 extern void ceph_osdc_flush_notifies(struct ceph_osd_client
*osdc
);
390 void ceph_osdc_maybe_request_map(struct ceph_osd_client
*osdc
);
392 extern int ceph_osdc_readpages(struct ceph_osd_client
*osdc
,
393 struct ceph_vino vino
,
394 struct ceph_file_layout
*layout
,
396 u32 truncate_seq
, u64 truncate_size
,
397 struct page
**pages
, int nr_pages
,
400 extern int ceph_osdc_writepages(struct ceph_osd_client
*osdc
,
401 struct ceph_vino vino
,
402 struct ceph_file_layout
*layout
,
403 struct ceph_snap_context
*sc
,
405 u32 truncate_seq
, u64 truncate_size
,
406 struct timespec
*mtime
,
407 struct page
**pages
, int nr_pages
);
410 struct ceph_osd_linger_request
*
411 ceph_osdc_watch(struct ceph_osd_client
*osdc
,
412 struct ceph_object_id
*oid
,
413 struct ceph_object_locator
*oloc
,
414 rados_watchcb2_t wcb
,
415 rados_watcherrcb_t errcb
,
417 int ceph_osdc_unwatch(struct ceph_osd_client
*osdc
,
418 struct ceph_osd_linger_request
*lreq
);
420 int ceph_osdc_notify_ack(struct ceph_osd_client
*osdc
,
421 struct ceph_object_id
*oid
,
422 struct ceph_object_locator
*oloc
,
427 int ceph_osdc_notify(struct ceph_osd_client
*osdc
,
428 struct ceph_object_id
*oid
,
429 struct ceph_object_locator
*oloc
,
433 struct page
***preply_pages
,
435 int ceph_osdc_watch_check(struct ceph_osd_client
*osdc
,
436 struct ceph_osd_linger_request
*lreq
);