Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 1 | #ifndef _FS_CEPH_OSD_CLIENT_H |
| 2 | #define _FS_CEPH_OSD_CLIENT_H |
| 3 | |
| 4 | #include <linux/completion.h> |
Sage Weil | 415e49a | 2009-12-07 13:37:03 -0800 | [diff] [blame] | 5 | #include <linux/kref.h> |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 6 | #include <linux/mempool.h> |
| 7 | #include <linux/rbtree.h> |
| 8 | |
| 9 | #include "types.h" |
| 10 | #include "osdmap.h" |
| 11 | #include "messenger.h" |
| 12 | |
Stratos Psomadakis | 224736d | 2011-11-10 15:45:37 +0200 | [diff] [blame^] | 13 | /* |
| 14 | * Maximum object name size |
| 15 | * (must be at least as big as RBD_MAX_MD_NAME_LEN -- currently 100) |
| 16 | */ |
| 17 | #define MAX_OBJ_NAME_SIZE 100 |
| 18 | |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 19 | struct ceph_msg; |
| 20 | struct ceph_snap_context; |
| 21 | struct ceph_osd_request; |
| 22 | struct ceph_osd_client; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 23 | struct ceph_authorizer; |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 24 | struct ceph_pagelist; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 25 | |
| 26 | /* |
| 27 | * completion callback for async writepages |
| 28 | */ |
| 29 | typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *, |
| 30 | struct ceph_msg *); |
| 31 | |
| 32 | /* a given osd we're communicating with */ |
| 33 | struct ceph_osd { |
| 34 | atomic_t o_ref; |
| 35 | struct ceph_osd_client *o_osdc; |
| 36 | int o_osd; |
| 37 | int o_incarnation; |
| 38 | struct rb_node o_node; |
| 39 | struct ceph_connection o_con; |
| 40 | struct list_head o_requests; |
Yehuda Sadeh | a40c4f1 | 2011-03-21 15:07:16 -0700 | [diff] [blame] | 41 | struct list_head o_linger_requests; |
Yehuda Sadeh | f5a2041 | 2010-02-03 11:00:26 -0800 | [diff] [blame] | 42 | struct list_head o_osd_lru; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 43 | struct ceph_authorizer *o_authorizer; |
| 44 | void *o_authorizer_buf, *o_authorizer_reply_buf; |
| 45 | size_t o_authorizer_buf_len, o_authorizer_reply_buf_len; |
Yehuda Sadeh | f5a2041 | 2010-02-03 11:00:26 -0800 | [diff] [blame] | 46 | unsigned long lru_ttl; |
Yehuda Sadeh | 422d2cb | 2010-02-26 15:32:31 -0800 | [diff] [blame] | 47 | int o_marked_for_keepalive; |
| 48 | struct list_head o_keepalive_item; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 49 | }; |
| 50 | |
| 51 | /* an in-flight request */ |
| 52 | struct ceph_osd_request { |
| 53 | u64 r_tid; /* unique for this client */ |
| 54 | struct rb_node r_node; |
Yehuda Sadeh | 422d2cb | 2010-02-26 15:32:31 -0800 | [diff] [blame] | 55 | struct list_head r_req_lru_item; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 56 | struct list_head r_osd_item; |
Yehuda Sadeh | a40c4f1 | 2011-03-21 15:07:16 -0700 | [diff] [blame] | 57 | struct list_head r_linger_item; |
| 58 | struct list_head r_linger_osd; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 59 | struct ceph_osd *r_osd; |
Sage Weil | 7740a42 | 2010-01-08 15:58:25 -0800 | [diff] [blame] | 60 | struct ceph_pg r_pgid; |
Sage Weil | d85b705 | 2010-05-10 10:24:48 -0700 | [diff] [blame] | 61 | int r_pg_osds[CEPH_PG_MAX_SIZE]; |
| 62 | int r_num_pg_osds; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 63 | |
Yehuda Sadeh | 0d59ab8 | 2010-01-13 17:03:23 -0800 | [diff] [blame] | 64 | struct ceph_connection *r_con_filling_msg; |
Sage Weil | 350b1c3 | 2009-12-22 10:45:45 -0800 | [diff] [blame] | 65 | |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 66 | struct ceph_msg *r_request, *r_reply; |
| 67 | int r_result; |
| 68 | int r_flags; /* any additional flags for the osd */ |
| 69 | u32 r_sent; /* >0 if r_request is sending/sent */ |
Sage Weil | 350b1c3 | 2009-12-22 10:45:45 -0800 | [diff] [blame] | 70 | int r_got_reply; |
Yehuda Sadeh | a40c4f1 | 2011-03-21 15:07:16 -0700 | [diff] [blame] | 71 | int r_linger; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 72 | |
| 73 | struct ceph_osd_client *r_osdc; |
Sage Weil | 415e49a | 2009-12-07 13:37:03 -0800 | [diff] [blame] | 74 | struct kref r_kref; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 75 | bool r_mempool; |
| 76 | struct completion r_completion, r_safe_completion; |
| 77 | ceph_osdc_callback_t r_callback, r_safe_callback; |
| 78 | struct ceph_eversion r_reassert_version; |
| 79 | struct list_head r_unsafe_item; |
| 80 | |
| 81 | struct inode *r_inode; /* for use by callbacks */ |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 82 | void *r_priv; /* ditto */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 83 | |
Stratos Psomadakis | 224736d | 2011-11-10 15:45:37 +0200 | [diff] [blame^] | 84 | char r_oid[MAX_OBJ_NAME_SIZE]; /* object name */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 85 | int r_oid_len; |
Sage Weil | 3dd72fc | 2010-03-22 14:42:30 -0700 | [diff] [blame] | 86 | unsigned long r_stamp; /* send OR check time */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 87 | |
| 88 | struct ceph_file_layout r_file_layout; |
| 89 | struct ceph_snap_context *r_snapc; /* snap context for writes */ |
| 90 | unsigned r_num_pages; /* size of page array (follows) */ |
Sage Weil | b7495fc | 2010-11-09 12:43:12 -0800 | [diff] [blame] | 91 | unsigned r_page_alignment; /* io offset in first page */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 92 | struct page **r_pages; /* pages for data payload */ |
| 93 | int r_pages_from_pool; |
| 94 | int r_own_pages; /* if true, i own page list */ |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 95 | #ifdef CONFIG_BLOCK |
| 96 | struct bio *r_bio; /* instead of pages */ |
| 97 | #endif |
| 98 | |
| 99 | struct ceph_pagelist *r_trail; /* trailing part of the data */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 100 | }; |
| 101 | |
Yehuda Sadeh | a40c4f1 | 2011-03-21 15:07:16 -0700 | [diff] [blame] | 102 | struct ceph_osd_event { |
| 103 | u64 cookie; |
| 104 | int one_shot; |
| 105 | struct ceph_osd_client *osdc; |
| 106 | void (*cb)(u64, u64, u8, void *); |
| 107 | void *data; |
| 108 | struct rb_node node; |
| 109 | struct list_head osd_node; |
| 110 | struct kref kref; |
| 111 | struct completion completion; |
| 112 | }; |
| 113 | |
| 114 | struct ceph_osd_event_work { |
| 115 | struct work_struct work; |
| 116 | struct ceph_osd_event *event; |
| 117 | u64 ver; |
| 118 | u64 notify_id; |
| 119 | u8 opcode; |
| 120 | }; |
| 121 | |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 122 | struct ceph_osd_client { |
| 123 | struct ceph_client *client; |
| 124 | |
| 125 | struct ceph_osdmap *osdmap; /* current map */ |
| 126 | struct rw_semaphore map_sem; |
| 127 | struct completion map_waiters; |
| 128 | u64 last_requested_map; |
| 129 | |
| 130 | struct mutex request_mutex; |
| 131 | struct rb_root osds; /* osds */ |
Yehuda Sadeh | f5a2041 | 2010-02-03 11:00:26 -0800 | [diff] [blame] | 132 | struct list_head osd_lru; /* idle osds */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 133 | u64 timeout_tid; /* tid of timeout triggering rq */ |
| 134 | u64 last_tid; /* tid of last request */ |
| 135 | struct rb_root requests; /* pending requests */ |
Sage Weil | 6f6c700 | 2011-01-17 20:34:08 -0800 | [diff] [blame] | 136 | struct list_head req_lru; /* in-flight lru */ |
| 137 | struct list_head req_unsent; /* unsent/need-resend queue */ |
| 138 | struct list_head req_notarget; /* map to no osd */ |
Yehuda Sadeh | a40c4f1 | 2011-03-21 15:07:16 -0700 | [diff] [blame] | 139 | struct list_head req_linger; /* lingering requests */ |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 140 | int num_requests; |
| 141 | struct delayed_work timeout_work; |
Yehuda Sadeh | f5a2041 | 2010-02-03 11:00:26 -0800 | [diff] [blame] | 142 | struct delayed_work osds_timeout_work; |
Sage Weil | 039934b | 2009-11-12 15:05:52 -0800 | [diff] [blame] | 143 | #ifdef CONFIG_DEBUG_FS |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 144 | struct dentry *debugfs_file; |
Sage Weil | 039934b | 2009-11-12 15:05:52 -0800 | [diff] [blame] | 145 | #endif |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 146 | |
| 147 | mempool_t *req_mempool; |
| 148 | |
Yehuda Sadeh | 0d59ab8 | 2010-01-13 17:03:23 -0800 | [diff] [blame] | 149 | struct ceph_msgpool msgpool_op; |
Sage Weil | c16e786 | 2010-03-01 13:02:00 -0800 | [diff] [blame] | 150 | struct ceph_msgpool msgpool_op_reply; |
Yehuda Sadeh | a40c4f1 | 2011-03-21 15:07:16 -0700 | [diff] [blame] | 151 | |
| 152 | spinlock_t event_lock; |
| 153 | struct rb_root event_tree; |
| 154 | u64 event_count; |
| 155 | |
| 156 | struct workqueue_struct *notify_wq; |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 157 | }; |
| 158 | |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 159 | struct ceph_osd_req_op { |
| 160 | u16 op; /* CEPH_OSD_OP_* */ |
| 161 | u32 flags; /* CEPH_OSD_FLAG_* */ |
| 162 | union { |
| 163 | struct { |
| 164 | u64 offset, length; |
| 165 | u64 truncate_size; |
| 166 | u32 truncate_seq; |
| 167 | } extent; |
| 168 | struct { |
| 169 | const char *name; |
| 170 | u32 name_len; |
| 171 | const char *val; |
| 172 | u32 value_len; |
| 173 | __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */ |
| 174 | __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */ |
| 175 | } xattr; |
| 176 | struct { |
Yehuda Sadeh | ae1533b | 2010-05-18 16:38:08 -0700 | [diff] [blame] | 177 | const char *class_name; |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 178 | __u8 class_len; |
Yehuda Sadeh | ae1533b | 2010-05-18 16:38:08 -0700 | [diff] [blame] | 179 | const char *method_name; |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 180 | __u8 method_len; |
| 181 | __u8 argc; |
Yehuda Sadeh | ae1533b | 2010-05-18 16:38:08 -0700 | [diff] [blame] | 182 | const char *indata; |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 183 | u32 indata_len; |
| 184 | } cls; |
| 185 | struct { |
| 186 | u64 cookie, count; |
| 187 | } pgls; |
Yehuda Sadeh | ae1533b | 2010-05-18 16:38:08 -0700 | [diff] [blame] | 188 | struct { |
| 189 | u64 snapid; |
| 190 | } snap; |
Yehuda Sadeh | a40c4f1 | 2011-03-21 15:07:16 -0700 | [diff] [blame] | 191 | struct { |
| 192 | u64 cookie; |
| 193 | u64 ver; |
| 194 | __u8 flag; |
| 195 | u32 prot_ver; |
| 196 | u32 timeout; |
| 197 | } watch; |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 198 | }; |
| 199 | u32 payload_len; |
| 200 | }; |
| 201 | |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 202 | extern int ceph_osdc_init(struct ceph_osd_client *osdc, |
| 203 | struct ceph_client *client); |
| 204 | extern void ceph_osdc_stop(struct ceph_osd_client *osdc); |
| 205 | |
| 206 | extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, |
| 207 | struct ceph_msg *msg); |
| 208 | extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, |
| 209 | struct ceph_msg *msg); |
| 210 | |
Yehuda Sadeh | 3499e8a | 2010-04-06 14:51:47 -0700 | [diff] [blame] | 211 | extern void ceph_calc_raw_layout(struct ceph_osd_client *osdc, |
| 212 | struct ceph_file_layout *layout, |
| 213 | u64 snapid, |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 214 | u64 off, u64 *plen, u64 *bno, |
| 215 | struct ceph_osd_request *req, |
| 216 | struct ceph_osd_req_op *op); |
Yehuda Sadeh | 3499e8a | 2010-04-06 14:51:47 -0700 | [diff] [blame] | 217 | |
| 218 | extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
| 219 | int flags, |
| 220 | struct ceph_snap_context *snapc, |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 221 | struct ceph_osd_req_op *ops, |
Yehuda Sadeh | 3499e8a | 2010-04-06 14:51:47 -0700 | [diff] [blame] | 222 | bool use_mempool, |
| 223 | gfp_t gfp_flags, |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 224 | struct page **pages, |
| 225 | struct bio *bio); |
Yehuda Sadeh | 3499e8a | 2010-04-06 14:51:47 -0700 | [diff] [blame] | 226 | |
| 227 | extern void ceph_osdc_build_request(struct ceph_osd_request *req, |
Yehuda Sadeh | 68b4476 | 2010-04-06 15:01:27 -0700 | [diff] [blame] | 228 | u64 off, u64 *plen, |
| 229 | struct ceph_osd_req_op *src_ops, |
| 230 | struct ceph_snap_context *snapc, |
| 231 | struct timespec *mtime, |
| 232 | const char *oid, |
| 233 | int oid_len); |
Yehuda Sadeh | 3499e8a | 2010-04-06 14:51:47 -0700 | [diff] [blame] | 234 | |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 235 | extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, |
| 236 | struct ceph_file_layout *layout, |
| 237 | struct ceph_vino vino, |
| 238 | u64 offset, u64 *len, int op, int flags, |
| 239 | struct ceph_snap_context *snapc, |
| 240 | int do_sync, u32 truncate_seq, |
| 241 | u64 truncate_size, |
| 242 | struct timespec *mtime, |
Sage Weil | b7495fc | 2010-11-09 12:43:12 -0800 | [diff] [blame] | 243 | bool use_mempool, int num_reply, |
| 244 | int page_align); |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 245 | |
Yehuda Sadeh | a40c4f1 | 2011-03-21 15:07:16 -0700 | [diff] [blame] | 246 | extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, |
| 247 | struct ceph_osd_request *req); |
| 248 | extern void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, |
| 249 | struct ceph_osd_request *req); |
| 250 | |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 251 | static inline void ceph_osdc_get_request(struct ceph_osd_request *req) |
| 252 | { |
Sage Weil | 415e49a | 2009-12-07 13:37:03 -0800 | [diff] [blame] | 253 | kref_get(&req->r_kref); |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 254 | } |
Sage Weil | 415e49a | 2009-12-07 13:37:03 -0800 | [diff] [blame] | 255 | extern void ceph_osdc_release_request(struct kref *kref); |
| 256 | static inline void ceph_osdc_put_request(struct ceph_osd_request *req) |
| 257 | { |
| 258 | kref_put(&req->r_kref, ceph_osdc_release_request); |
| 259 | } |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 260 | |
| 261 | extern int ceph_osdc_start_request(struct ceph_osd_client *osdc, |
| 262 | struct ceph_osd_request *req, |
| 263 | bool nofail); |
| 264 | extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc, |
| 265 | struct ceph_osd_request *req); |
| 266 | extern void ceph_osdc_sync(struct ceph_osd_client *osdc); |
| 267 | |
| 268 | extern int ceph_osdc_readpages(struct ceph_osd_client *osdc, |
| 269 | struct ceph_vino vino, |
| 270 | struct ceph_file_layout *layout, |
| 271 | u64 off, u64 *plen, |
| 272 | u32 truncate_seq, u64 truncate_size, |
Sage Weil | b7495fc | 2010-11-09 12:43:12 -0800 | [diff] [blame] | 273 | struct page **pages, int nr_pages, |
| 274 | int page_align); |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 275 | |
| 276 | extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, |
| 277 | struct ceph_vino vino, |
| 278 | struct ceph_file_layout *layout, |
| 279 | struct ceph_snap_context *sc, |
| 280 | u64 off, u64 len, |
| 281 | u32 truncate_seq, u64 truncate_size, |
| 282 | struct timespec *mtime, |
| 283 | struct page **pages, int nr_pages, |
| 284 | int flags, int do_sync, bool nofail); |
| 285 | |
Yehuda Sadeh | a40c4f1 | 2011-03-21 15:07:16 -0700 | [diff] [blame] | 286 | /* watch/notify events */ |
| 287 | extern int ceph_osdc_create_event(struct ceph_osd_client *osdc, |
| 288 | void (*event_cb)(u64, u64, u8, void *), |
| 289 | int one_shot, void *data, |
| 290 | struct ceph_osd_event **pevent); |
| 291 | extern void ceph_osdc_cancel_event(struct ceph_osd_event *event); |
| 292 | extern int ceph_osdc_wait_event(struct ceph_osd_event *event, |
| 293 | unsigned long timeout); |
| 294 | extern void ceph_osdc_put_event(struct ceph_osd_event *event); |
Sage Weil | f24e998 | 2009-10-06 11:31:10 -0700 | [diff] [blame] | 295 | #endif |
| 296 | |