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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 | ||
9 | #include "types.h" | |
10 | #include "osdmap.h" | |
11 | #include "messenger.h" | |
12 | ||
13 | struct ceph_msg; | |
14 | struct ceph_snap_context; | |
15 | struct ceph_osd_request; | |
16 | struct ceph_osd_client; | |
4e7a5dcd | 17 | struct ceph_authorizer; |
68b4476b | 18 | struct ceph_pagelist; |
f24e9980 SW |
19 | |
20 | /* | |
21 | * completion callback for async writepages | |
22 | */ | |
23 | typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *, | |
24 | struct ceph_msg *); | |
25 | ||
26 | /* a given osd we're communicating with */ | |
27 | struct ceph_osd { | |
28 | atomic_t o_ref; | |
29 | struct ceph_osd_client *o_osdc; | |
30 | int o_osd; | |
31 | int o_incarnation; | |
32 | struct rb_node o_node; | |
33 | struct ceph_connection o_con; | |
34 | struct list_head o_requests; | |
f5a2041b | 35 | struct list_head o_osd_lru; |
4e7a5dcd SW |
36 | struct ceph_authorizer *o_authorizer; |
37 | void *o_authorizer_buf, *o_authorizer_reply_buf; | |
38 | size_t o_authorizer_buf_len, o_authorizer_reply_buf_len; | |
f5a2041b | 39 | unsigned long lru_ttl; |
422d2cb8 YS |
40 | int o_marked_for_keepalive; |
41 | struct list_head o_keepalive_item; | |
f24e9980 SW |
42 | }; |
43 | ||
44 | /* an in-flight request */ | |
45 | struct ceph_osd_request { | |
46 | u64 r_tid; /* unique for this client */ | |
47 | struct rb_node r_node; | |
422d2cb8 | 48 | struct list_head r_req_lru_item; |
f24e9980 SW |
49 | struct list_head r_osd_item; |
50 | struct ceph_osd *r_osd; | |
7740a42f | 51 | struct ceph_pg r_pgid; |
d85b7056 SW |
52 | int r_pg_osds[CEPH_PG_MAX_SIZE]; |
53 | int r_num_pg_osds; | |
f24e9980 | 54 | |
0d59ab81 | 55 | struct ceph_connection *r_con_filling_msg; |
350b1c32 | 56 | |
f24e9980 SW |
57 | struct ceph_msg *r_request, *r_reply; |
58 | int r_result; | |
59 | int r_flags; /* any additional flags for the osd */ | |
60 | u32 r_sent; /* >0 if r_request is sending/sent */ | |
350b1c32 | 61 | int r_got_reply; |
f24e9980 SW |
62 | |
63 | struct ceph_osd_client *r_osdc; | |
415e49a9 | 64 | struct kref r_kref; |
f24e9980 SW |
65 | bool r_mempool; |
66 | struct completion r_completion, r_safe_completion; | |
67 | ceph_osdc_callback_t r_callback, r_safe_callback; | |
68 | struct ceph_eversion r_reassert_version; | |
69 | struct list_head r_unsafe_item; | |
70 | ||
71 | struct inode *r_inode; /* for use by callbacks */ | |
f24e9980 SW |
72 | |
73 | char r_oid[40]; /* object name */ | |
74 | int r_oid_len; | |
3dd72fc0 | 75 | unsigned long r_stamp; /* send OR check time */ |
f24e9980 SW |
76 | bool r_resend; /* msg send failed, needs retry */ |
77 | ||
78 | struct ceph_file_layout r_file_layout; | |
79 | struct ceph_snap_context *r_snapc; /* snap context for writes */ | |
80 | unsigned r_num_pages; /* size of page array (follows) */ | |
81 | struct page **r_pages; /* pages for data payload */ | |
82 | int r_pages_from_pool; | |
83 | int r_own_pages; /* if true, i own page list */ | |
68b4476b YS |
84 | #ifdef CONFIG_BLOCK |
85 | struct bio *r_bio; /* instead of pages */ | |
86 | #endif | |
87 | ||
88 | struct ceph_pagelist *r_trail; /* trailing part of the data */ | |
f24e9980 SW |
89 | }; |
90 | ||
91 | struct ceph_osd_client { | |
92 | struct ceph_client *client; | |
93 | ||
94 | struct ceph_osdmap *osdmap; /* current map */ | |
95 | struct rw_semaphore map_sem; | |
96 | struct completion map_waiters; | |
97 | u64 last_requested_map; | |
98 | ||
99 | struct mutex request_mutex; | |
100 | struct rb_root osds; /* osds */ | |
f5a2041b | 101 | struct list_head osd_lru; /* idle osds */ |
f24e9980 SW |
102 | u64 timeout_tid; /* tid of timeout triggering rq */ |
103 | u64 last_tid; /* tid of last request */ | |
104 | struct rb_root requests; /* pending requests */ | |
422d2cb8 | 105 | struct list_head req_lru; /* pending requests lru */ |
f24e9980 SW |
106 | int num_requests; |
107 | struct delayed_work timeout_work; | |
f5a2041b | 108 | struct delayed_work osds_timeout_work; |
039934b8 | 109 | #ifdef CONFIG_DEBUG_FS |
f24e9980 | 110 | struct dentry *debugfs_file; |
039934b8 | 111 | #endif |
f24e9980 SW |
112 | |
113 | mempool_t *req_mempool; | |
114 | ||
0d59ab81 | 115 | struct ceph_msgpool msgpool_op; |
c16e7869 | 116 | struct ceph_msgpool msgpool_op_reply; |
f24e9980 SW |
117 | }; |
118 | ||
68b4476b YS |
119 | struct ceph_osd_req_op { |
120 | u16 op; /* CEPH_OSD_OP_* */ | |
121 | u32 flags; /* CEPH_OSD_FLAG_* */ | |
122 | union { | |
123 | struct { | |
124 | u64 offset, length; | |
125 | u64 truncate_size; | |
126 | u32 truncate_seq; | |
127 | } extent; | |
128 | struct { | |
129 | const char *name; | |
130 | u32 name_len; | |
131 | const char *val; | |
132 | u32 value_len; | |
133 | __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */ | |
134 | __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */ | |
135 | } xattr; | |
136 | struct { | |
ae1533b6 | 137 | const char *class_name; |
68b4476b | 138 | __u8 class_len; |
ae1533b6 | 139 | const char *method_name; |
68b4476b YS |
140 | __u8 method_len; |
141 | __u8 argc; | |
ae1533b6 | 142 | const char *indata; |
68b4476b YS |
143 | u32 indata_len; |
144 | } cls; | |
145 | struct { | |
146 | u64 cookie, count; | |
147 | } pgls; | |
ae1533b6 YS |
148 | struct { |
149 | u64 snapid; | |
150 | } snap; | |
68b4476b YS |
151 | }; |
152 | u32 payload_len; | |
153 | }; | |
154 | ||
f24e9980 SW |
155 | extern int ceph_osdc_init(struct ceph_osd_client *osdc, |
156 | struct ceph_client *client); | |
157 | extern void ceph_osdc_stop(struct ceph_osd_client *osdc); | |
158 | ||
159 | extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, | |
160 | struct ceph_msg *msg); | |
161 | extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, | |
162 | struct ceph_msg *msg); | |
163 | ||
3499e8a5 YS |
164 | extern void ceph_calc_raw_layout(struct ceph_osd_client *osdc, |
165 | struct ceph_file_layout *layout, | |
166 | u64 snapid, | |
68b4476b YS |
167 | u64 off, u64 *plen, u64 *bno, |
168 | struct ceph_osd_request *req, | |
169 | struct ceph_osd_req_op *op); | |
3499e8a5 YS |
170 | |
171 | extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, | |
172 | int flags, | |
173 | struct ceph_snap_context *snapc, | |
68b4476b | 174 | struct ceph_osd_req_op *ops, |
3499e8a5 YS |
175 | bool use_mempool, |
176 | gfp_t gfp_flags, | |
68b4476b YS |
177 | struct page **pages, |
178 | struct bio *bio); | |
3499e8a5 YS |
179 | |
180 | extern void ceph_osdc_build_request(struct ceph_osd_request *req, | |
68b4476b YS |
181 | u64 off, u64 *plen, |
182 | struct ceph_osd_req_op *src_ops, | |
183 | struct ceph_snap_context *snapc, | |
184 | struct timespec *mtime, | |
185 | const char *oid, | |
186 | int oid_len); | |
3499e8a5 | 187 | |
f24e9980 SW |
188 | extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, |
189 | struct ceph_file_layout *layout, | |
190 | struct ceph_vino vino, | |
191 | u64 offset, u64 *len, int op, int flags, | |
192 | struct ceph_snap_context *snapc, | |
193 | int do_sync, u32 truncate_seq, | |
194 | u64 truncate_size, | |
195 | struct timespec *mtime, | |
196 | bool use_mempool, int num_reply); | |
197 | ||
198 | static inline void ceph_osdc_get_request(struct ceph_osd_request *req) | |
199 | { | |
415e49a9 SW |
200 | kref_get(&req->r_kref); |
201 | } | |
202 | extern void ceph_osdc_release_request(struct kref *kref); | |
203 | static inline void ceph_osdc_put_request(struct ceph_osd_request *req) | |
204 | { | |
205 | kref_put(&req->r_kref, ceph_osdc_release_request); | |
f24e9980 | 206 | } |
f24e9980 SW |
207 | |
208 | extern int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
209 | struct ceph_osd_request *req, | |
210 | bool nofail); | |
211 | extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
212 | struct ceph_osd_request *req); | |
213 | extern void ceph_osdc_sync(struct ceph_osd_client *osdc); | |
214 | ||
215 | extern int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
216 | struct ceph_vino vino, | |
217 | struct ceph_file_layout *layout, | |
218 | u64 off, u64 *plen, | |
219 | u32 truncate_seq, u64 truncate_size, | |
220 | struct page **pages, int nr_pages); | |
221 | ||
222 | extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, | |
223 | struct ceph_vino vino, | |
224 | struct ceph_file_layout *layout, | |
225 | struct ceph_snap_context *sc, | |
226 | u64 off, u64 len, | |
227 | u32 truncate_seq, u64 truncate_size, | |
228 | struct timespec *mtime, | |
229 | struct page **pages, int nr_pages, | |
230 | int flags, int do_sync, bool nofail); | |
231 | ||
232 | #endif | |
233 |