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-rw-r--r--fs/ceph/osd_client.h167
1 files changed, 167 insertions, 0 deletions
diff --git a/fs/ceph/osd_client.h b/fs/ceph/osd_client.h
new file mode 100644
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+++ b/fs/ceph/osd_client.h
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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;
18
19/*
20 * completion callback for async writepages
21 */
22typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *,
23 struct ceph_msg *);
24
25/* a given osd we're communicating with */
26struct 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;
34 struct list_head o_osd_lru;
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;
38 unsigned long lru_ttl;
39 int o_marked_for_keepalive;
40 struct list_head o_keepalive_item;
41};
42
43/* an in-flight request */
44struct ceph_osd_request {
45 u64 r_tid; /* unique for this client */
46 struct rb_node r_node;
47 struct list_head r_req_lru_item;
48 struct list_head r_osd_item;
49 struct ceph_osd *r_osd;
50 struct ceph_pg r_pgid;
51 int r_pg_osds[CEPH_PG_MAX_SIZE];
52 int r_num_pg_osds;
53
54 struct ceph_connection *r_con_filling_msg;
55
56 struct ceph_msg *r_request, *r_reply;
57 int r_result;
58 int r_flags; /* any additional flags for the osd */
59 u32 r_sent; /* >0 if r_request is sending/sent */
60 int r_got_reply;
61
62 struct ceph_osd_client *r_osdc;
63 struct kref r_kref;
64 bool r_mempool;
65 struct completion r_completion, r_safe_completion;
66 ceph_osdc_callback_t r_callback, r_safe_callback;
67 struct ceph_eversion r_reassert_version;
68 struct list_head r_unsafe_item;
69
70 struct inode *r_inode; /* for use by callbacks */
71
72 char r_oid[40]; /* object name */
73 int r_oid_len;
74 unsigned long r_stamp; /* send OR check time */
75 bool r_resend; /* msg send failed, needs retry */
76
77 struct ceph_file_layout r_file_layout;
78 struct ceph_snap_context *r_snapc; /* snap context for writes */
79 unsigned r_num_pages; /* size of page array (follows) */
80 struct page **r_pages; /* pages for data payload */
81 int r_pages_from_pool;
82 int r_own_pages; /* if true, i own page list */
83};
84
85struct ceph_osd_client {
86 struct ceph_client *client;
87
88 struct ceph_osdmap *osdmap; /* current map */
89 struct rw_semaphore map_sem;
90 struct completion map_waiters;
91 u64 last_requested_map;
92
93 struct mutex request_mutex;
94 struct rb_root osds; /* osds */
95 struct list_head osd_lru; /* idle osds */
96 u64 timeout_tid; /* tid of timeout triggering rq */
97 u64 last_tid; /* tid of last request */
98 struct rb_root requests; /* pending requests */
99 struct list_head req_lru; /* pending requests lru */
100 int num_requests;
101 struct delayed_work timeout_work;
102 struct delayed_work osds_timeout_work;
103#ifdef CONFIG_DEBUG_FS
104 struct dentry *debugfs_file;
105#endif
106
107 mempool_t *req_mempool;
108
109 struct ceph_msgpool msgpool_op;
110 struct ceph_msgpool msgpool_op_reply;
111};
112
113extern int ceph_osdc_init(struct ceph_osd_client *osdc,
114 struct ceph_client *client);
115extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
116
117extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
118 struct ceph_msg *msg);
119extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
120 struct ceph_msg *msg);
121
122extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
123 struct ceph_file_layout *layout,
124 struct ceph_vino vino,
125 u64 offset, u64 *len, int op, int flags,
126 struct ceph_snap_context *snapc,
127 int do_sync, u32 truncate_seq,
128 u64 truncate_size,
129 struct timespec *mtime,
130 bool use_mempool, int num_reply);
131
132static inline void ceph_osdc_get_request(struct ceph_osd_request *req)
133{
134 kref_get(&req->r_kref);
135}
136extern void ceph_osdc_release_request(struct kref *kref);
137static inline void ceph_osdc_put_request(struct ceph_osd_request *req)
138{
139 kref_put(&req->r_kref, ceph_osdc_release_request);
140}
141
142extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
143 struct ceph_osd_request *req,
144 bool nofail);
145extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
146 struct ceph_osd_request *req);
147extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
148
149extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
150 struct ceph_vino vino,
151 struct ceph_file_layout *layout,
152 u64 off, u64 *plen,
153 u32 truncate_seq, u64 truncate_size,
154 struct page **pages, int nr_pages);
155
156extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
157 struct ceph_vino vino,
158 struct ceph_file_layout *layout,
159 struct ceph_snap_context *sc,
160 u64 off, u64 len,
161 u32 truncate_seq, u64 truncate_size,
162 struct timespec *mtime,
163 struct page **pages, int nr_pages,
164 int flags, int do_sync, bool nofail);
165
166#endif
167
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-13 14:36:39 -0400