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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; |
f24e9980 SW |
18 | |
19 | /* | |
20 | * completion callback for async writepages | |
21 | */ | |
22 | typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *, | |
23 | struct ceph_msg *); | |
24 | ||
25 | /* a given osd we're communicating with */ | |
26 | struct ceph_osd { | |
27 | atomic_t o_ref; | |
28 | struct ceph_osd_client *o_osdc; | |
29 | int o_osd; | |
30 | int o_incarnation; | |
31 | struct rb_node o_node; | |
32 | struct ceph_connection o_con; | |
33 | struct list_head o_requests; | |
f5a2041b | 34 | struct list_head o_osd_lru; |
4e7a5dcd SW |
35 | struct ceph_authorizer *o_authorizer; |
36 | void *o_authorizer_buf, *o_authorizer_reply_buf; | |
37 | size_t o_authorizer_buf_len, o_authorizer_reply_buf_len; | |
f5a2041b | 38 | unsigned long lru_ttl; |
f24e9980 SW |
39 | }; |
40 | ||
41 | /* an in-flight request */ | |
42 | struct ceph_osd_request { | |
43 | u64 r_tid; /* unique for this client */ | |
44 | struct rb_node r_node; | |
45 | struct list_head r_osd_item; | |
46 | struct ceph_osd *r_osd; | |
7740a42f | 47 | struct ceph_pg r_pgid; |
f24e9980 | 48 | |
0d59ab81 | 49 | struct ceph_connection *r_con_filling_msg; |
350b1c32 | 50 | |
f24e9980 SW |
51 | struct ceph_msg *r_request, *r_reply; |
52 | int r_result; | |
53 | int r_flags; /* any additional flags for the osd */ | |
54 | u32 r_sent; /* >0 if r_request is sending/sent */ | |
350b1c32 | 55 | int r_got_reply; |
f24e9980 SW |
56 | |
57 | struct ceph_osd_client *r_osdc; | |
415e49a9 | 58 | struct kref r_kref; |
f24e9980 SW |
59 | bool r_mempool; |
60 | struct completion r_completion, r_safe_completion; | |
61 | ceph_osdc_callback_t r_callback, r_safe_callback; | |
62 | struct ceph_eversion r_reassert_version; | |
63 | struct list_head r_unsafe_item; | |
64 | ||
65 | struct inode *r_inode; /* for use by callbacks */ | |
66 | struct writeback_control *r_wbc; /* ditto */ | |
67 | ||
68 | char r_oid[40]; /* object name */ | |
69 | int r_oid_len; | |
70 | unsigned long r_timeout_stamp; | |
71 | bool r_resend; /* msg send failed, needs retry */ | |
72 | ||
73 | struct ceph_file_layout r_file_layout; | |
74 | struct ceph_snap_context *r_snapc; /* snap context for writes */ | |
75 | unsigned r_num_pages; /* size of page array (follows) */ | |
76 | struct page **r_pages; /* pages for data payload */ | |
77 | int r_pages_from_pool; | |
78 | int r_own_pages; /* if true, i own page list */ | |
79 | }; | |
80 | ||
81 | struct ceph_osd_client { | |
82 | struct ceph_client *client; | |
83 | ||
84 | struct ceph_osdmap *osdmap; /* current map */ | |
85 | struct rw_semaphore map_sem; | |
86 | struct completion map_waiters; | |
87 | u64 last_requested_map; | |
88 | ||
89 | struct mutex request_mutex; | |
90 | struct rb_root osds; /* osds */ | |
f5a2041b | 91 | struct list_head osd_lru; /* idle osds */ |
f24e9980 SW |
92 | u64 timeout_tid; /* tid of timeout triggering rq */ |
93 | u64 last_tid; /* tid of last request */ | |
94 | struct rb_root requests; /* pending requests */ | |
95 | int num_requests; | |
96 | struct delayed_work timeout_work; | |
f5a2041b | 97 | struct delayed_work osds_timeout_work; |
039934b8 | 98 | #ifdef CONFIG_DEBUG_FS |
f24e9980 | 99 | struct dentry *debugfs_file; |
039934b8 | 100 | #endif |
f24e9980 SW |
101 | |
102 | mempool_t *req_mempool; | |
103 | ||
0d59ab81 | 104 | struct ceph_msgpool msgpool_op; |
c16e7869 | 105 | struct ceph_msgpool msgpool_op_reply; |
f24e9980 SW |
106 | }; |
107 | ||
108 | extern int ceph_osdc_init(struct ceph_osd_client *osdc, | |
109 | struct ceph_client *client); | |
110 | extern void ceph_osdc_stop(struct ceph_osd_client *osdc); | |
111 | ||
112 | extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, | |
113 | struct ceph_msg *msg); | |
114 | extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, | |
115 | struct ceph_msg *msg); | |
116 | ||
117 | extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, | |
118 | struct ceph_file_layout *layout, | |
119 | struct ceph_vino vino, | |
120 | u64 offset, u64 *len, int op, int flags, | |
121 | struct ceph_snap_context *snapc, | |
122 | int do_sync, u32 truncate_seq, | |
123 | u64 truncate_size, | |
124 | struct timespec *mtime, | |
125 | bool use_mempool, int num_reply); | |
126 | ||
127 | static inline void ceph_osdc_get_request(struct ceph_osd_request *req) | |
128 | { | |
415e49a9 SW |
129 | kref_get(&req->r_kref); |
130 | } | |
131 | extern void ceph_osdc_release_request(struct kref *kref); | |
132 | static inline void ceph_osdc_put_request(struct ceph_osd_request *req) | |
133 | { | |
134 | kref_put(&req->r_kref, ceph_osdc_release_request); | |
f24e9980 | 135 | } |
f24e9980 SW |
136 | |
137 | extern int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
138 | struct ceph_osd_request *req, | |
139 | bool nofail); | |
140 | extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
141 | struct ceph_osd_request *req); | |
142 | extern void ceph_osdc_sync(struct ceph_osd_client *osdc); | |
143 | ||
144 | extern int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
145 | struct ceph_vino vino, | |
146 | struct ceph_file_layout *layout, | |
147 | u64 off, u64 *plen, | |
148 | u32 truncate_seq, u64 truncate_size, | |
149 | struct page **pages, int nr_pages); | |
150 | ||
151 | extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, | |
152 | struct ceph_vino vino, | |
153 | struct ceph_file_layout *layout, | |
154 | struct ceph_snap_context *sc, | |
155 | u64 off, u64 len, | |
156 | u32 truncate_seq, u64 truncate_size, | |
157 | struct timespec *mtime, | |
158 | struct page **pages, int nr_pages, | |
159 | int flags, int do_sync, bool nofail); | |
160 | ||
161 | #endif | |
162 |