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/auth.h>
13 #include <linux/ceph/pagelist.h>
16 struct ceph_snap_context
;
17 struct ceph_osd_request
;
18 struct ceph_osd_client
;
21 * completion callback for async writepages
23 typedef void (*ceph_osdc_callback_t
)(struct ceph_osd_request
*);
24 typedef void (*ceph_osdc_unsafe_callback_t
)(struct ceph_osd_request
*, bool);
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 u64 expected_object_size
;
124 u64 expected_write_size
;
129 struct ceph_osd_request_target
{
130 struct ceph_object_id base_oid
;
131 struct ceph_object_locator base_oloc
;
132 struct ceph_object_id target_oid
;
133 struct ceph_object_locator target_oloc
;
138 struct ceph_osds acting
;
144 unsigned int flags
; /* CEPH_OSD_FLAG_* */
150 /* an in-flight request */
151 struct ceph_osd_request
{
152 u64 r_tid
; /* unique for this client */
153 struct rb_node r_node
;
154 struct ceph_osd
*r_osd
;
156 struct ceph_osd_request_target r_t
;
157 #define r_base_oid r_t.base_oid
158 #define r_base_oloc r_t.base_oloc
159 #define r_flags r_t.flags
161 struct ceph_msg
*r_request
, *r_reply
;
162 u32 r_sent
; /* >0 if r_request is sending/sent */
164 /* request osd ops array */
165 unsigned int r_num_ops
;
170 struct ceph_osd_client
*r_osdc
;
173 struct completion r_completion
;
174 struct completion r_safe_completion
; /* fsync waiter */
175 ceph_osdc_callback_t r_callback
;
176 ceph_osdc_unsafe_callback_t r_unsafe_callback
;
177 struct list_head r_unsafe_item
;
179 struct inode
*r_inode
; /* for use by callbacks */
180 void *r_priv
; /* ditto */
182 /* set by submitter */
183 u64 r_snapid
; /* for reads, CEPH_NOSNAP o/w */
184 struct ceph_snap_context
*r_snapc
; /* for writes */
185 struct timespec r_mtime
; /* ditto */
186 u64 r_data_offset
; /* ditto */
187 bool r_linger
; /* don't resend on failure */
190 unsigned long r_stamp
; /* jiffies, send or check time */
192 struct ceph_eversion r_replay_version
; /* aka reassert_version */
193 u32 r_last_force_resend
;
195 struct ceph_osd_req_op r_ops
[];
198 struct ceph_request_redirect
{
199 struct ceph_object_locator oloc
;
202 typedef void (*rados_watchcb2_t
)(void *arg
, u64 notify_id
, u64 cookie
,
203 u64 notifier_id
, void *data
, size_t data_len
);
204 typedef void (*rados_watcherrcb_t
)(void *arg
, u64 cookie
, int err
);
206 struct ceph_osd_linger_request
{
207 struct ceph_osd_client
*osdc
;
210 bool is_watch
; /* watch or notify */
212 struct ceph_osd
*osd
;
213 struct ceph_osd_request
*reg_req
;
214 struct ceph_osd_request
*ping_req
;
215 unsigned long ping_sent
;
216 unsigned long watch_valid_thru
;
217 struct list_head pending_lworks
;
219 struct ceph_osd_request_target t
;
220 u32 last_force_resend
;
222 struct timespec mtime
;
226 struct rb_node node
; /* osd */
227 struct rb_node osdc_node
; /* osdc */
228 struct list_head scan_item
;
230 struct completion reg_commit_wait
;
231 struct completion notify_finish_wait
;
232 int reg_commit_error
;
233 int notify_finish_error
;
239 rados_watchcb2_t wcb
;
240 rados_watcherrcb_t errcb
;
243 struct page
***preply_pages
;
247 struct ceph_osd_client
{
248 struct ceph_client
*client
;
250 struct ceph_osdmap
*osdmap
; /* current map */
251 struct rw_semaphore lock
;
253 struct rb_root osds
; /* osds */
254 struct list_head osd_lru
; /* idle osds */
255 spinlock_t osd_lru_lock
;
256 struct ceph_osd homeless_osd
;
257 atomic64_t last_tid
; /* tid of last request */
259 struct rb_root linger_requests
; /* lingering requests */
260 atomic_t num_requests
;
261 atomic_t num_homeless
;
262 struct delayed_work timeout_work
;
263 struct delayed_work osds_timeout_work
;
264 #ifdef CONFIG_DEBUG_FS
265 struct dentry
*debugfs_file
;
268 mempool_t
*req_mempool
;
270 struct ceph_msgpool msgpool_op
;
271 struct ceph_msgpool msgpool_op_reply
;
273 struct workqueue_struct
*notify_wq
;
276 extern int ceph_osdc_setup(void);
277 extern void ceph_osdc_cleanup(void);
279 extern int ceph_osdc_init(struct ceph_osd_client
*osdc
,
280 struct ceph_client
*client
);
281 extern void ceph_osdc_stop(struct ceph_osd_client
*osdc
);
283 extern void ceph_osdc_handle_reply(struct ceph_osd_client
*osdc
,
284 struct ceph_msg
*msg
);
285 extern void ceph_osdc_handle_map(struct ceph_osd_client
*osdc
,
286 struct ceph_msg
*msg
);
288 extern void osd_req_op_init(struct ceph_osd_request
*osd_req
,
289 unsigned int which
, u16 opcode
, u32 flags
);
291 extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request
*,
293 struct page
**pages
, u64 length
,
294 u32 alignment
, bool pages_from_pool
,
297 extern void osd_req_op_extent_init(struct ceph_osd_request
*osd_req
,
298 unsigned int which
, u16 opcode
,
299 u64 offset
, u64 length
,
300 u64 truncate_size
, u32 truncate_seq
);
301 extern void osd_req_op_extent_update(struct ceph_osd_request
*osd_req
,
302 unsigned int which
, u64 length
);
303 extern void osd_req_op_extent_dup_last(struct ceph_osd_request
*osd_req
,
304 unsigned int which
, u64 offset_inc
);
306 extern struct ceph_osd_data
*osd_req_op_extent_osd_data(
307 struct ceph_osd_request
*osd_req
,
310 extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request
*,
312 struct page
**pages
, u64 length
,
313 u32 alignment
, bool pages_from_pool
,
315 extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request
*,
317 struct ceph_pagelist
*pagelist
);
319 extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request
*,
321 struct bio
*bio
, size_t bio_length
);
322 #endif /* CONFIG_BLOCK */
324 extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request
*,
326 struct ceph_pagelist
*pagelist
);
327 extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request
*,
329 struct page
**pages
, u64 length
,
330 u32 alignment
, bool pages_from_pool
,
332 extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request
*,
334 struct page
**pages
, u64 length
,
335 u32 alignment
, bool pages_from_pool
,
338 extern void osd_req_op_cls_init(struct ceph_osd_request
*osd_req
,
339 unsigned int which
, u16 opcode
,
340 const char *class, const char *method
);
341 extern int osd_req_op_xattr_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
342 u16 opcode
, const char *name
, const void *value
,
343 size_t size
, u8 cmp_op
, u8 cmp_mode
);
344 extern void osd_req_op_alloc_hint_init(struct ceph_osd_request
*osd_req
,
346 u64 expected_object_size
,
347 u64 expected_write_size
);
349 extern struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client
*osdc
,
350 struct ceph_snap_context
*snapc
,
351 unsigned int num_ops
,
354 int ceph_osdc_alloc_messages(struct ceph_osd_request
*req
, gfp_t gfp
);
356 extern struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client
*,
357 struct ceph_file_layout
*layout
,
358 struct ceph_vino vino
,
359 u64 offset
, u64
*len
,
360 unsigned int which
, int num_ops
,
361 int opcode
, int flags
,
362 struct ceph_snap_context
*snapc
,
363 u32 truncate_seq
, u64 truncate_size
,
366 extern void ceph_osdc_get_request(struct ceph_osd_request
*req
);
367 extern void ceph_osdc_put_request(struct ceph_osd_request
*req
);
369 extern int ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
370 struct ceph_osd_request
*req
,
372 extern void ceph_osdc_cancel_request(struct ceph_osd_request
*req
);
373 extern int ceph_osdc_wait_request(struct ceph_osd_client
*osdc
,
374 struct ceph_osd_request
*req
);
375 extern void ceph_osdc_sync(struct ceph_osd_client
*osdc
);
377 extern void ceph_osdc_flush_notifies(struct ceph_osd_client
*osdc
);
379 extern int ceph_osdc_readpages(struct ceph_osd_client
*osdc
,
380 struct ceph_vino vino
,
381 struct ceph_file_layout
*layout
,
383 u32 truncate_seq
, u64 truncate_size
,
384 struct page
**pages
, int nr_pages
,
387 extern int ceph_osdc_writepages(struct ceph_osd_client
*osdc
,
388 struct ceph_vino vino
,
389 struct ceph_file_layout
*layout
,
390 struct ceph_snap_context
*sc
,
392 u32 truncate_seq
, u64 truncate_size
,
393 struct timespec
*mtime
,
394 struct page
**pages
, int nr_pages
);
397 struct ceph_osd_linger_request
*
398 ceph_osdc_watch(struct ceph_osd_client
*osdc
,
399 struct ceph_object_id
*oid
,
400 struct ceph_object_locator
*oloc
,
401 rados_watchcb2_t wcb
,
402 rados_watcherrcb_t errcb
,
404 int ceph_osdc_unwatch(struct ceph_osd_client
*osdc
,
405 struct ceph_osd_linger_request
*lreq
);
407 int ceph_osdc_notify_ack(struct ceph_osd_client
*osdc
,
408 struct ceph_object_id
*oid
,
409 struct ceph_object_locator
*oloc
,
414 int ceph_osdc_notify(struct ceph_osd_client
*osdc
,
415 struct ceph_object_id
*oid
,
416 struct ceph_object_locator
*oloc
,
420 struct page
***preply_pages
,
422 int ceph_osdc_watch_check(struct ceph_osd_client
*osdc
,
423 struct ceph_osd_linger_request
*lreq
);