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-rw-r--r--include/linux/ceph/osd_client.h234
1 files changed, 234 insertions, 0 deletions
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
new file mode 100644
index 00000000000..6c91fb032c3
--- /dev/null
+++ b/include/linux/ceph/osd_client.h
@@ -0,0 +1,234 @@
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 "types.h"
10#include "osdmap.h"
11#include "messenger.h"
12
13struct ceph_msg;
14struct ceph_snap_context;
15struct ceph_osd_request;
16struct ceph_osd_client;
17struct ceph_authorizer;
18struct ceph_pagelist;
19
20/*
21 * completion callback for async writepages
22 */
23typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *,
24 struct ceph_msg *);
25
26/* a given osd we're communicating with */
27struct 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;
35 struct list_head o_osd_lru;
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;
39 unsigned long lru_ttl;
40 int o_marked_for_keepalive;
41 struct list_head o_keepalive_item;
42};
43
44/* an in-flight request */
45struct ceph_osd_request {
46 u64 r_tid; /* unique for this client */
47 struct rb_node r_node;
48 struct list_head r_req_lru_item;
49 struct list_head r_osd_item;
50 struct ceph_osd *r_osd;
51 struct ceph_pg r_pgid;
52 int r_pg_osds[CEPH_PG_MAX_SIZE];
53 int r_num_pg_osds;
54
55 struct ceph_connection *r_con_filling_msg;
56
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 */
61 int r_got_reply;
62
63 struct ceph_osd_client *r_osdc;
64 struct kref r_kref;
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 */
72 void *r_priv; /* ditto */
73
74 char r_oid[40]; /* object name */
75 int r_oid_len;
76 unsigned long r_stamp; /* send OR check time */
77 bool r_resend; /* msg send failed, needs retry */
78
79 struct ceph_file_layout r_file_layout;
80 struct ceph_snap_context *r_snapc; /* snap context for writes */
81 unsigned r_num_pages; /* size of page array (follows) */
82 struct page **r_pages; /* pages for data payload */
83 int r_pages_from_pool;
84 int r_own_pages; /* if true, i own page list */
85#ifdef CONFIG_BLOCK
86 struct bio *r_bio; /* instead of pages */
87#endif
88
89 struct ceph_pagelist *r_trail; /* trailing part of the data */
90};
91
92struct ceph_osd_client {
93 struct ceph_client *client;
94
95 struct ceph_osdmap *osdmap; /* current map */
96 struct rw_semaphore map_sem;
97 struct completion map_waiters;
98 u64 last_requested_map;
99
100 struct mutex request_mutex;
101 struct rb_root osds; /* osds */
102 struct list_head osd_lru; /* idle osds */
103 u64 timeout_tid; /* tid of timeout triggering rq */
104 u64 last_tid; /* tid of last request */
105 struct rb_root requests; /* pending requests */
106 struct list_head req_lru; /* pending requests lru */
107 int num_requests;
108 struct delayed_work timeout_work;
109 struct delayed_work osds_timeout_work;
110#ifdef CONFIG_DEBUG_FS
111 struct dentry *debugfs_file;
112#endif
113
114 mempool_t *req_mempool;
115
116 struct ceph_msgpool msgpool_op;
117 struct ceph_msgpool msgpool_op_reply;
118};
119
120struct ceph_osd_req_op {
121 u16 op; /* CEPH_OSD_OP_* */
122 u32 flags; /* CEPH_OSD_FLAG_* */
123 union {
124 struct {
125 u64 offset, length;
126 u64 truncate_size;
127 u32 truncate_seq;
128 } extent;
129 struct {
130 const char *name;
131 u32 name_len;
132 const char *val;
133 u32 value_len;
134 __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */
135 __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */
136 } xattr;
137 struct {
138 const char *class_name;
139 __u8 class_len;
140 const char *method_name;
141 __u8 method_len;
142 __u8 argc;
143 const char *indata;
144 u32 indata_len;
145 } cls;
146 struct {
147 u64 cookie, count;
148 } pgls;
149 struct {
150 u64 snapid;
151 } snap;
152 };
153 u32 payload_len;
154};
155
156extern int ceph_osdc_init(struct ceph_osd_client *osdc,
157 struct ceph_client *client);
158extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
159
160extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
161 struct ceph_msg *msg);
162extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
163 struct ceph_msg *msg);
164
165extern void ceph_calc_raw_layout(struct ceph_osd_client *osdc,
166 struct ceph_file_layout *layout,
167 u64 snapid,
168 u64 off, u64 *plen, u64 *bno,
169 struct ceph_osd_request *req,
170 struct ceph_osd_req_op *op);
171
172extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
173 int flags,
174 struct ceph_snap_context *snapc,
175 struct ceph_osd_req_op *ops,
176 bool use_mempool,
177 gfp_t gfp_flags,
178 struct page **pages,
179 struct bio *bio);
180
181extern void ceph_osdc_build_request(struct ceph_osd_request *req,
182 u64 off, u64 *plen,
183 struct ceph_osd_req_op *src_ops,
184 struct ceph_snap_context *snapc,
185 struct timespec *mtime,
186 const char *oid,
187 int oid_len);
188
189extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
190 struct ceph_file_layout *layout,
191 struct ceph_vino vino,
192 u64 offset, u64 *len, int op, int flags,
193 struct ceph_snap_context *snapc,
194 int do_sync, u32 truncate_seq,
195 u64 truncate_size,
196 struct timespec *mtime,
197 bool use_mempool, int num_reply);
198
199static inline void ceph_osdc_get_request(struct ceph_osd_request *req)
200{
201 kref_get(&req->r_kref);
202}
203extern void ceph_osdc_release_request(struct kref *kref);
204static inline void ceph_osdc_put_request(struct ceph_osd_request *req)
205{
206 kref_put(&req->r_kref, ceph_osdc_release_request);
207}
208
209extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
210 struct ceph_osd_request *req,
211 bool nofail);
212extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
213 struct ceph_osd_request *req);
214extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
215
216extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
217 struct ceph_vino vino,
218 struct ceph_file_layout *layout,
219 u64 off, u64 *plen,
220 u32 truncate_seq, u64 truncate_size,
221 struct page **pages, int nr_pages);
222
223extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
224 struct ceph_vino vino,
225 struct ceph_file_layout *layout,
226 struct ceph_snap_context *sc,
227 u64 off, u64 len,
228 u32 truncate_seq, u64 truncate_size,
229 struct timespec *mtime,
230 struct page **pages, int nr_pages,
231 int flags, int do_sync, bool nofail);
232
233#endif
234
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-19 18:39:40 -0400