~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/include/linux/ceph/osd_client.h

Version: ~ [ linux-5.4-rc7 ] ~ [ linux-5.3.11 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.84 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.154 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.201 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.201 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.77 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 #ifndef _FS_CEPH_OSD_CLIENT_H
  2 #define _FS_CEPH_OSD_CLIENT_H
  3 
  4 #include <linux/completion.h>
  5 #include <linux/kref.h>
  6 #include <linux/mempool.h>
  7 #include <linux/rbtree.h>
  8 
  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>
 14 
 15 struct ceph_msg;
 16 struct ceph_snap_context;
 17 struct ceph_osd_request;
 18 struct ceph_osd_client;
 19 struct ceph_authorizer;
 20 
 21 /*
 22  * completion callback for async writepages
 23  */
 24 typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *,
 25                                      struct ceph_msg *);
 26 typedef void (*ceph_osdc_unsafe_callback_t)(struct ceph_osd_request *, bool);
 27 
 28 /* a given osd we're communicating with */
 29 struct ceph_osd {
 30         atomic_t o_ref;
 31         struct ceph_osd_client *o_osdc;
 32         int o_osd;
 33         int o_incarnation;
 34         struct rb_node o_node;
 35         struct ceph_connection o_con;
 36         struct list_head o_requests;
 37         struct list_head o_linger_requests;
 38         struct list_head o_osd_lru;
 39         struct ceph_auth_handshake o_auth;
 40         unsigned long lru_ttl;
 41         int o_marked_for_keepalive;
 42         struct list_head o_keepalive_item;
 43 };
 44 
 45 
 46 #define CEPH_OSD_MAX_OP 3
 47 
 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,
 52 #ifdef CONFIG_BLOCK
 53         CEPH_OSD_DATA_TYPE_BIO,
 54 #endif /* CONFIG_BLOCK */
 55 };
 56 
 57 struct ceph_osd_data {
 58         enum ceph_osd_data_type type;
 59         union {
 60                 struct {
 61                         struct page     **pages;
 62                         u64             length;
 63                         u32             alignment;
 64                         bool            pages_from_pool;
 65                         bool            own_pages;
 66                 };
 67                 struct ceph_pagelist    *pagelist;
 68 #ifdef CONFIG_BLOCK
 69                 struct {
 70                         struct bio      *bio;           /* list of bios */
 71                         size_t          bio_length;     /* total in list */
 72                 };
 73 #endif /* CONFIG_BLOCK */
 74         };
 75 };
 76 
 77 struct ceph_osd_req_op {
 78         u16 op;           /* CEPH_OSD_OP_* */
 79         u32 flags;        /* CEPH_OSD_OP_FLAG_* */
 80         u32 payload_len;
 81         union {
 82                 struct ceph_osd_data raw_data_in;
 83                 struct {
 84                         u64 offset, length;
 85                         u64 truncate_size;
 86                         u32 truncate_seq;
 87                         struct ceph_osd_data osd_data;
 88                 } extent;
 89                 struct {
 90                         u32 name_len;
 91                         u32 value_len;
 92                         __u8 cmp_op;       /* CEPH_OSD_CMPXATTR_OP_* */
 93                         __u8 cmp_mode;     /* CEPH_OSD_CMPXATTR_MODE_* */
 94                         struct ceph_osd_data osd_data;
 95                 } xattr;
 96                 struct {
 97                         const char *class_name;
 98                         const char *method_name;
 99                         struct ceph_osd_data request_info;
100                         struct ceph_osd_data request_data;
101                         struct ceph_osd_data response_data;
102                         __u8 class_len;
103                         __u8 method_len;
104                         __u8 argc;
105                 } cls;
106                 struct {
107                         u64 cookie;
108                         u64 ver;
109                         u32 prot_ver;
110                         u32 timeout;
111                         __u8 flag;
112                 } watch;
113                 struct {
114                         u64 expected_object_size;
115                         u64 expected_write_size;
116                 } alloc_hint;
117         };
118 };
119 
120 /* an in-flight request */
121 struct ceph_osd_request {
122         u64             r_tid;              /* unique for this client */
123         struct rb_node  r_node;
124         struct list_head r_req_lru_item;
125         struct list_head r_osd_item;
126         struct list_head r_linger_item;
127         struct list_head r_linger_osd_item;
128         struct ceph_osd *r_osd;
129         struct ceph_pg   r_pgid;
130         int              r_pg_osds[CEPH_PG_MAX_SIZE];
131         int              r_num_pg_osds;
132 
133         struct ceph_msg  *r_request, *r_reply;
134         int               r_flags;     /* any additional flags for the osd */
135         u32               r_sent;      /* >0 if r_request is sending/sent */
136 
137         /* request osd ops array  */
138         unsigned int            r_num_ops;
139         struct ceph_osd_req_op  r_ops[CEPH_OSD_MAX_OP];
140 
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;
147         bool              r_paused;
148         struct ceph_eversion *r_request_reassert_version;
149 
150         int               r_result;
151         int               r_reply_op_len[CEPH_OSD_MAX_OP];
152         s32               r_reply_op_result[CEPH_OSD_MAX_OP];
153         int               r_got_reply;
154         int               r_linger;
155 
156         struct ceph_osd_client *r_osdc;
157         struct kref       r_kref;
158         bool              r_mempool;
159         struct completion r_completion, r_safe_completion;
160         ceph_osdc_callback_t r_callback;
161         ceph_osdc_unsafe_callback_t r_unsafe_callback;
162         struct ceph_eversion r_reassert_version;
163         struct list_head  r_unsafe_item;
164 
165         struct inode *r_inode;                /* for use by callbacks */
166         void *r_priv;                         /* ditto */
167 
168         struct ceph_object_locator r_base_oloc;
169         struct ceph_object_id r_base_oid;
170         struct ceph_object_locator r_target_oloc;
171         struct ceph_object_id r_target_oid;
172 
173         u64               r_snapid;
174         unsigned long     r_stamp;            /* send OR check time */
175 
176         struct ceph_snap_context *r_snapc;    /* snap context for writes */
177 };
178 
179 struct ceph_request_redirect {
180         struct ceph_object_locator oloc;
181 };
182 
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;
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 
202 struct ceph_osd_client {
203         struct ceph_client     *client;
204 
205         struct ceph_osdmap     *osdmap;       /* current map */
206         struct rw_semaphore    map_sem;
207         struct completion      map_waiters;
208         u64                    last_requested_map;
209 
210         struct mutex           request_mutex;
211         struct rb_root         osds;          /* osds */
212         struct list_head       osd_lru;       /* idle osds */
213         u64                    timeout_tid;   /* tid of timeout triggering rq */
214         u64                    last_tid;      /* tid of last request */
215         struct rb_root         requests;      /* pending requests */
216         struct list_head       req_lru;       /* in-flight lru */
217         struct list_head       req_unsent;    /* unsent/need-resend queue */
218         struct list_head       req_notarget;  /* map to no osd */
219         struct list_head       req_linger;    /* lingering requests */
220         int                    num_requests;
221         struct delayed_work    timeout_work;
222         struct delayed_work    osds_timeout_work;
223 #ifdef CONFIG_DEBUG_FS
224         struct dentry          *debugfs_file;
225 #endif
226 
227         mempool_t              *req_mempool;
228 
229         struct ceph_msgpool     msgpool_op;
230         struct ceph_msgpool     msgpool_op_reply;
231 
232         spinlock_t              event_lock;
233         struct rb_root          event_tree;
234         u64                     event_count;
235 
236         struct workqueue_struct *notify_wq;
237 };
238 
239 extern int ceph_osdc_setup(void);
240 extern void ceph_osdc_cleanup(void);
241 
242 extern int ceph_osdc_init(struct ceph_osd_client *osdc,
243                           struct ceph_client *client);
244 extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
245 
246 extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
247                                    struct ceph_msg *msg);
248 extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
249                                  struct ceph_msg *msg);
250 
251 extern void osd_req_op_init(struct ceph_osd_request *osd_req,
252                             unsigned int which, u16 opcode, u32 flags);
253 
254 extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *,
255                                         unsigned int which,
256                                         struct page **pages, u64 length,
257                                         u32 alignment, bool pages_from_pool,
258                                         bool own_pages);
259 
260 extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
261                                         unsigned int which, u16 opcode,
262                                         u64 offset, u64 length,
263                                         u64 truncate_size, u32 truncate_seq);
264 extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
265                                         unsigned int which, u64 length);
266 
267 extern struct ceph_osd_data *osd_req_op_extent_osd_data(
268                                         struct ceph_osd_request *osd_req,
269                                         unsigned int which);
270 extern struct ceph_osd_data *osd_req_op_cls_response_data(
271                                         struct ceph_osd_request *osd_req,
272                                         unsigned int which);
273 
274 extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *,
275                                         unsigned int which,
276                                         struct page **pages, u64 length,
277                                         u32 alignment, bool pages_from_pool,
278                                         bool own_pages);
279 extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *,
280                                         unsigned int which,
281                                         struct ceph_pagelist *pagelist);
282 #ifdef CONFIG_BLOCK
283 extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *,
284                                         unsigned int which,
285                                         struct bio *bio, size_t bio_length);
286 #endif /* CONFIG_BLOCK */
287 
288 extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *,
289                                         unsigned int which,
290                                         struct ceph_pagelist *pagelist);
291 extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *,
292                                         unsigned int which,
293                                         struct page **pages, u64 length,
294                                         u32 alignment, bool pages_from_pool,
295                                         bool own_pages);
296 extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
297                                         unsigned int which,
298                                         struct page **pages, u64 length,
299                                         u32 alignment, bool pages_from_pool,
300                                         bool own_pages);
301 
302 extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
303                                         unsigned int which, u16 opcode,
304                                         const char *class, const char *method);
305 extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
306                                  u16 opcode, const char *name, const void *value,
307                                  size_t size, u8 cmp_op, u8 cmp_mode);
308 extern void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
309                                         unsigned int which, u16 opcode,
310                                         u64 cookie, u64 version, int flag);
311 extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
312                                        unsigned int which,
313                                        u64 expected_object_size,
314                                        u64 expected_write_size);
315 
316 extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
317                                                struct ceph_snap_context *snapc,
318                                                unsigned int num_ops,
319                                                bool use_mempool,
320                                                gfp_t gfp_flags);
321 
322 extern void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off,
323                                     struct ceph_snap_context *snapc,
324                                     u64 snap_id,
325                                     struct timespec *mtime);
326 
327 extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
328                                       struct ceph_file_layout *layout,
329                                       struct ceph_vino vino,
330                                       u64 offset, u64 *len,
331                                       unsigned int which, int num_ops,
332                                       int opcode, int flags,
333                                       struct ceph_snap_context *snapc,
334                                       u32 truncate_seq, u64 truncate_size,
335                                       bool use_mempool);
336 
337 extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
338                                          struct ceph_osd_request *req);
339 
340 extern void ceph_osdc_get_request(struct ceph_osd_request *req);
341 extern void ceph_osdc_put_request(struct ceph_osd_request *req);
342 
343 extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
344                                    struct ceph_osd_request *req,
345                                    bool nofail);
346 extern void ceph_osdc_cancel_request(struct ceph_osd_request *req);
347 extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
348                                   struct ceph_osd_request *req);
349 extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
350 
351 extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc);
352 
353 extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
354                                struct ceph_vino vino,
355                                struct ceph_file_layout *layout,
356                                u64 off, u64 *plen,
357                                u32 truncate_seq, u64 truncate_size,
358                                struct page **pages, int nr_pages,
359                                int page_align);
360 
361 extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
362                                 struct ceph_vino vino,
363                                 struct ceph_file_layout *layout,
364                                 struct ceph_snap_context *sc,
365                                 u64 off, u64 len,
366                                 u32 truncate_seq, u64 truncate_size,
367                                 struct timespec *mtime,
368                                 struct page **pages, int nr_pages);
369 
370 /* watch/notify events */
371 extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,
372                                   void (*event_cb)(u64, u64, u8, void *),
373                                   void *data, struct ceph_osd_event **pevent);
374 extern void ceph_osdc_cancel_event(struct ceph_osd_event *event);
375 extern void ceph_osdc_put_event(struct ceph_osd_event *event);
376 #endif
377 
378 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp