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);