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f24e9980 SW |
1 | #ifndef _FS_CEPH_OSD_CLIENT_H |
2 | #define _FS_CEPH_OSD_CLIENT_H | |
3 | ||
4 | #include <linux/completion.h> | |
415e49a9 | 5 | #include <linux/kref.h> |
f24e9980 SW |
6 | #include <linux/mempool.h> |
7 | #include <linux/rbtree.h> | |
8 | ||
6c4a1915 AE |
9 | #include <linux/ceph/types.h> |
10 | #include <linux/ceph/osdmap.h> | |
11 | #include <linux/ceph/messenger.h> | |
12 | #include <linux/ceph/auth.h> | |
c885837f | 13 | #include <linux/ceph/pagelist.h> |
f24e9980 SW |
14 | |
15 | struct ceph_msg; | |
16 | struct ceph_snap_context; | |
17 | struct ceph_osd_request; | |
18 | struct ceph_osd_client; | |
19 | ||
20 | /* | |
21 | * completion callback for async writepages | |
22 | */ | |
23 | typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *, | |
24 | struct ceph_msg *); | |
26be8808 | 25 | typedef void (*ceph_osdc_unsafe_callback_t)(struct ceph_osd_request *, bool); |
f24e9980 SW |
26 | |
27 | /* a given osd we're communicating with */ | |
28 | struct ceph_osd { | |
29 | atomic_t o_ref; | |
30 | struct ceph_osd_client *o_osdc; | |
31 | int o_osd; | |
32 | int o_incarnation; | |
33 | struct rb_node o_node; | |
34 | struct ceph_connection o_con; | |
35 | struct list_head o_requests; | |
a40c4f10 | 36 | struct list_head o_linger_requests; |
f5a2041b | 37 | struct list_head o_osd_lru; |
6c4a1915 | 38 | struct ceph_auth_handshake o_auth; |
f5a2041b | 39 | unsigned long lru_ttl; |
422d2cb8 | 40 | struct list_head o_keepalive_item; |
f24e9980 SW |
41 | }; |
42 | ||
3f1af42a ID |
43 | #define CEPH_OSD_SLAB_OPS 2 |
44 | #define CEPH_OSD_MAX_OPS 16 | |
1b83bef2 | 45 | |
2ac2b7a6 | 46 | enum ceph_osd_data_type { |
ec9123c5 | 47 | CEPH_OSD_DATA_TYPE_NONE = 0, |
2ac2b7a6 | 48 | CEPH_OSD_DATA_TYPE_PAGES, |
9a5e6d09 | 49 | CEPH_OSD_DATA_TYPE_PAGELIST, |
2ac2b7a6 AE |
50 | #ifdef CONFIG_BLOCK |
51 | CEPH_OSD_DATA_TYPE_BIO, | |
52 | #endif /* CONFIG_BLOCK */ | |
53 | }; | |
54 | ||
2794a82a | 55 | struct ceph_osd_data { |
2ac2b7a6 AE |
56 | enum ceph_osd_data_type type; |
57 | union { | |
2794a82a AE |
58 | struct { |
59 | struct page **pages; | |
e0c59487 | 60 | u64 length; |
2794a82a AE |
61 | u32 alignment; |
62 | bool pages_from_pool; | |
63 | bool own_pages; | |
64 | }; | |
9a5e6d09 | 65 | struct ceph_pagelist *pagelist; |
2794a82a | 66 | #ifdef CONFIG_BLOCK |
fdce58cc AE |
67 | struct { |
68 | struct bio *bio; /* list of bios */ | |
69 | size_t bio_length; /* total in list */ | |
70 | }; | |
2794a82a AE |
71 | #endif /* CONFIG_BLOCK */ |
72 | }; | |
73 | }; | |
74 | ||
79528734 AE |
75 | struct ceph_osd_req_op { |
76 | u16 op; /* CEPH_OSD_OP_* */ | |
7b25bf5f | 77 | u32 flags; /* CEPH_OSD_OP_FLAG_* */ |
de2aa102 | 78 | u32 indata_len; /* request */ |
7665d85b YZ |
79 | u32 outdata_len; /* reply */ |
80 | s32 rval; | |
81 | ||
79528734 | 82 | union { |
49719778 | 83 | struct ceph_osd_data raw_data_in; |
79528734 AE |
84 | struct { |
85 | u64 offset, length; | |
86 | u64 truncate_size; | |
87 | u32 truncate_seq; | |
5476492f | 88 | struct ceph_osd_data osd_data; |
79528734 | 89 | } extent; |
d74b50be | 90 | struct { |
d7d5a007 ID |
91 | u32 name_len; |
92 | u32 value_len; | |
d74b50be YZ |
93 | __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */ |
94 | __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */ | |
95 | struct ceph_osd_data osd_data; | |
96 | } xattr; | |
79528734 AE |
97 | struct { |
98 | const char *class_name; | |
99 | const char *method_name; | |
5476492f | 100 | struct ceph_osd_data request_info; |
04017e29 | 101 | struct ceph_osd_data request_data; |
5476492f | 102 | struct ceph_osd_data response_data; |
79528734 AE |
103 | __u8 class_len; |
104 | __u8 method_len; | |
105 | __u8 argc; | |
106 | } cls; | |
107 | struct { | |
108 | u64 cookie; | |
109 | u64 ver; | |
110 | u32 prot_ver; | |
111 | u32 timeout; | |
112 | __u8 flag; | |
113 | } watch; | |
c647b8a8 ID |
114 | struct { |
115 | u64 expected_object_size; | |
116 | u64 expected_write_size; | |
117 | } alloc_hint; | |
79528734 AE |
118 | }; |
119 | }; | |
120 | ||
f24e9980 SW |
121 | /* an in-flight request */ |
122 | struct ceph_osd_request { | |
123 | u64 r_tid; /* unique for this client */ | |
124 | struct rb_node r_node; | |
422d2cb8 | 125 | struct list_head r_req_lru_item; |
f24e9980 | 126 | struct list_head r_osd_item; |
a40c4f10 | 127 | struct list_head r_linger_item; |
1d0326b1 | 128 | struct list_head r_linger_osd_item; |
f24e9980 | 129 | struct ceph_osd *r_osd; |
5b191d99 | 130 | struct ceph_pg r_pgid; |
d85b7056 SW |
131 | int r_pg_osds[CEPH_PG_MAX_SIZE]; |
132 | int r_num_pg_osds; | |
f24e9980 SW |
133 | |
134 | struct ceph_msg *r_request, *r_reply; | |
f24e9980 SW |
135 | int r_flags; /* any additional flags for the osd */ |
136 | u32 r_sent; /* >0 if r_request is sending/sent */ | |
1b83bef2 | 137 | |
79528734 AE |
138 | /* request osd ops array */ |
139 | unsigned int r_num_ops; | |
79528734 | 140 | |
1b83bef2 SW |
141 | /* these are updated on each send */ |
142 | __le32 *r_request_osdmap_epoch; | |
143 | __le32 *r_request_flags; | |
144 | __le64 *r_request_pool; | |
145 | void *r_request_pgid; | |
146 | __le32 *r_request_attempts; | |
d29adb34 | 147 | bool r_paused; |
1b83bef2 SW |
148 | struct ceph_eversion *r_request_reassert_version; |
149 | ||
150 | int r_result; | |
350b1c32 | 151 | int r_got_reply; |
a40c4f10 | 152 | int r_linger; |
f24e9980 SW |
153 | |
154 | struct ceph_osd_client *r_osdc; | |
415e49a9 | 155 | struct kref r_kref; |
f24e9980 SW |
156 | bool r_mempool; |
157 | struct completion r_completion, r_safe_completion; | |
26be8808 AE |
158 | ceph_osdc_callback_t r_callback; |
159 | ceph_osdc_unsafe_callback_t r_unsafe_callback; | |
f24e9980 SW |
160 | struct ceph_eversion r_reassert_version; |
161 | struct list_head r_unsafe_item; | |
162 | ||
163 | struct inode *r_inode; /* for use by callbacks */ | |
3d14c5d2 | 164 | void *r_priv; /* ditto */ |
f24e9980 | 165 | |
3c972c95 ID |
166 | struct ceph_object_locator r_base_oloc; |
167 | struct ceph_object_id r_base_oid; | |
205ee118 ID |
168 | struct ceph_object_locator r_target_oloc; |
169 | struct ceph_object_id r_target_oid; | |
22116525 | 170 | |
2169aea6 | 171 | u64 r_snapid; |
3dd72fc0 | 172 | unsigned long r_stamp; /* send OR check time */ |
f24e9980 | 173 | |
f24e9980 | 174 | struct ceph_snap_context *r_snapc; /* snap context for writes */ |
3f1af42a ID |
175 | |
176 | struct ceph_osd_req_op r_ops[]; | |
f24e9980 SW |
177 | }; |
178 | ||
205ee118 ID |
179 | struct ceph_request_redirect { |
180 | struct ceph_object_locator oloc; | |
181 | }; | |
182 | ||
a40c4f10 YS |
183 | struct ceph_osd_event { |
184 | u64 cookie; | |
185 | int one_shot; | |
186 | struct ceph_osd_client *osdc; | |
187 | void (*cb)(u64, u64, u8, void *); | |
188 | void *data; | |
189 | struct rb_node node; | |
190 | struct list_head osd_node; | |
191 | struct kref kref; | |
a40c4f10 YS |
192 | }; |
193 | ||
194 | struct ceph_osd_event_work { | |
195 | struct work_struct work; | |
196 | struct ceph_osd_event *event; | |
197 | u64 ver; | |
198 | u64 notify_id; | |
199 | u8 opcode; | |
200 | }; | |
201 | ||
f24e9980 SW |
202 | struct ceph_osd_client { |
203 | struct ceph_client *client; | |
204 | ||
205 | struct ceph_osdmap *osdmap; /* current map */ | |
206 | struct rw_semaphore map_sem; | |
f24e9980 SW |
207 | |
208 | struct mutex request_mutex; | |
209 | struct rb_root osds; /* osds */ | |
f5a2041b | 210 | struct list_head osd_lru; /* idle osds */ |
f24e9980 SW |
211 | u64 last_tid; /* tid of last request */ |
212 | struct rb_root requests; /* pending requests */ | |
6f6c7006 SW |
213 | struct list_head req_lru; /* in-flight lru */ |
214 | struct list_head req_unsent; /* unsent/need-resend queue */ | |
215 | struct list_head req_notarget; /* map to no osd */ | |
a40c4f10 | 216 | struct list_head req_linger; /* lingering requests */ |
f24e9980 SW |
217 | int num_requests; |
218 | struct delayed_work timeout_work; | |
f5a2041b | 219 | struct delayed_work osds_timeout_work; |
039934b8 | 220 | #ifdef CONFIG_DEBUG_FS |
f24e9980 | 221 | struct dentry *debugfs_file; |
039934b8 | 222 | #endif |
f24e9980 SW |
223 | |
224 | mempool_t *req_mempool; | |
225 | ||
0d59ab81 | 226 | struct ceph_msgpool msgpool_op; |
c16e7869 | 227 | struct ceph_msgpool msgpool_op_reply; |
a40c4f10 YS |
228 | |
229 | spinlock_t event_lock; | |
230 | struct rb_root event_tree; | |
231 | u64 event_count; | |
232 | ||
233 | struct workqueue_struct *notify_wq; | |
f24e9980 SW |
234 | }; |
235 | ||
5522ae0b AE |
236 | extern int ceph_osdc_setup(void); |
237 | extern void ceph_osdc_cleanup(void); | |
238 | ||
f24e9980 SW |
239 | extern int ceph_osdc_init(struct ceph_osd_client *osdc, |
240 | struct ceph_client *client); | |
241 | extern void ceph_osdc_stop(struct ceph_osd_client *osdc); | |
242 | ||
243 | extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, | |
244 | struct ceph_msg *msg); | |
245 | extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, | |
246 | struct ceph_msg *msg); | |
247 | ||
49719778 | 248 | extern void osd_req_op_init(struct ceph_osd_request *osd_req, |
144cba14 | 249 | unsigned int which, u16 opcode, u32 flags); |
49719778 AE |
250 | |
251 | extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *, | |
252 | unsigned int which, | |
253 | struct page **pages, u64 length, | |
254 | u32 alignment, bool pages_from_pool, | |
255 | bool own_pages); | |
256 | ||
c99d2d4a AE |
257 | extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
258 | unsigned int which, u16 opcode, | |
33803f33 AE |
259 | u64 offset, u64 length, |
260 | u64 truncate_size, u32 truncate_seq); | |
c99d2d4a AE |
261 | extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
262 | unsigned int which, u64 length); | |
2c63f49a YZ |
263 | extern void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
264 | unsigned int which, u64 offset_inc); | |
a4ce40a9 AE |
265 | |
266 | extern struct ceph_osd_data *osd_req_op_extent_osd_data( | |
267 | struct ceph_osd_request *osd_req, | |
406e2c9f | 268 | unsigned int which); |
a4ce40a9 AE |
269 | |
270 | extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *, | |
406e2c9f | 271 | unsigned int which, |
a4ce40a9 AE |
272 | struct page **pages, u64 length, |
273 | u32 alignment, bool pages_from_pool, | |
274 | bool own_pages); | |
275 | extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *, | |
406e2c9f | 276 | unsigned int which, |
a4ce40a9 AE |
277 | struct ceph_pagelist *pagelist); |
278 | #ifdef CONFIG_BLOCK | |
279 | extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *, | |
406e2c9f | 280 | unsigned int which, |
a4ce40a9 AE |
281 | struct bio *bio, size_t bio_length); |
282 | #endif /* CONFIG_BLOCK */ | |
283 | ||
04017e29 AE |
284 | extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *, |
285 | unsigned int which, | |
286 | struct ceph_pagelist *pagelist); | |
6c57b554 AE |
287 | extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *, |
288 | unsigned int which, | |
289 | struct page **pages, u64 length, | |
290 | u32 alignment, bool pages_from_pool, | |
291 | bool own_pages); | |
a4ce40a9 | 292 | extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *, |
c99d2d4a | 293 | unsigned int which, |
a4ce40a9 AE |
294 | struct page **pages, u64 length, |
295 | u32 alignment, bool pages_from_pool, | |
296 | bool own_pages); | |
297 | ||
c99d2d4a AE |
298 | extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req, |
299 | unsigned int which, u16 opcode, | |
04017e29 | 300 | const char *class, const char *method); |
d74b50be YZ |
301 | extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
302 | u16 opcode, const char *name, const void *value, | |
303 | size_t size, u8 cmp_op, u8 cmp_mode); | |
c99d2d4a AE |
304 | extern void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
305 | unsigned int which, u16 opcode, | |
33803f33 | 306 | u64 cookie, u64 version, int flag); |
c647b8a8 ID |
307 | extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
308 | unsigned int which, | |
309 | u64 expected_object_size, | |
310 | u64 expected_write_size); | |
33803f33 | 311 | |
3499e8a5 | 312 | extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
3499e8a5 | 313 | struct ceph_snap_context *snapc, |
acead002 | 314 | unsigned int num_ops, |
3499e8a5 | 315 | bool use_mempool, |
54a54007 | 316 | gfp_t gfp_flags); |
13d1ad16 | 317 | int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp); |
3499e8a5 | 318 | |
175face2 | 319 | extern void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, |
68b4476b | 320 | struct ceph_snap_context *snapc, |
4d6b250b | 321 | u64 snap_id, |
af77f26c | 322 | struct timespec *mtime); |
3499e8a5 | 323 | |
f24e9980 SW |
324 | extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, |
325 | struct ceph_file_layout *layout, | |
326 | struct ceph_vino vino, | |
acead002 | 327 | u64 offset, u64 *len, |
715e4cd4 YZ |
328 | unsigned int which, int num_ops, |
329 | int opcode, int flags, | |
f24e9980 | 330 | struct ceph_snap_context *snapc, |
acead002 | 331 | u32 truncate_seq, u64 truncate_size, |
153e5167 | 332 | bool use_mempool); |
f24e9980 | 333 | |
a40c4f10 YS |
334 | extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, |
335 | struct ceph_osd_request *req); | |
a40c4f10 | 336 | |
9e94af20 ID |
337 | extern void ceph_osdc_get_request(struct ceph_osd_request *req); |
338 | extern void ceph_osdc_put_request(struct ceph_osd_request *req); | |
f24e9980 SW |
339 | |
340 | extern int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
341 | struct ceph_osd_request *req, | |
342 | bool nofail); | |
c9f9b93d | 343 | extern void ceph_osdc_cancel_request(struct ceph_osd_request *req); |
f24e9980 SW |
344 | extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc, |
345 | struct ceph_osd_request *req); | |
346 | extern void ceph_osdc_sync(struct ceph_osd_client *osdc); | |
347 | ||
dd935f44 JD |
348 | extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc); |
349 | ||
f24e9980 SW |
350 | extern int ceph_osdc_readpages(struct ceph_osd_client *osdc, |
351 | struct ceph_vino vino, | |
352 | struct ceph_file_layout *layout, | |
353 | u64 off, u64 *plen, | |
354 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 SW |
355 | struct page **pages, int nr_pages, |
356 | int page_align); | |
f24e9980 SW |
357 | |
358 | extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, | |
359 | struct ceph_vino vino, | |
360 | struct ceph_file_layout *layout, | |
361 | struct ceph_snap_context *sc, | |
362 | u64 off, u64 len, | |
363 | u32 truncate_seq, u64 truncate_size, | |
364 | struct timespec *mtime, | |
24808826 | 365 | struct page **pages, int nr_pages); |
f24e9980 | 366 | |
a40c4f10 YS |
367 | /* watch/notify events */ |
368 | extern int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
369 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 370 | void *data, struct ceph_osd_event **pevent); |
a40c4f10 | 371 | extern void ceph_osdc_cancel_event(struct ceph_osd_event *event); |
a40c4f10 | 372 | extern void ceph_osdc_put_event(struct ceph_osd_event *event); |
f24e9980 SW |
373 | #endif |
374 |