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-rw-r--r--include/linux/ceph/mon_client.h122
1 files changed, 122 insertions, 0 deletions
diff --git a/include/linux/ceph/mon_client.h b/include/linux/ceph/mon_client.h
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+++ b/include/linux/ceph/mon_client.h
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1#ifndef _FS_CEPH_MON_CLIENT_H
2#define _FS_CEPH_MON_CLIENT_H
3
4#include <linux/completion.h>
5#include <linux/kref.h>
6#include <linux/rbtree.h>
7
8#include "messenger.h"
9
10struct ceph_client;
11struct ceph_mount_args;
12struct ceph_auth_client;
13
14/*
15 * The monitor map enumerates the set of all monitors.
16 */
17struct ceph_monmap {
18 struct ceph_fsid fsid;
19 u32 epoch;
20 u32 num_mon;
21 struct ceph_entity_inst mon_inst[0];
22};
23
24struct ceph_mon_client;
25struct ceph_mon_generic_request;
26
27
28/*
29 * Generic mechanism for resending monitor requests.
30 */
31typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc,
32 int newmon);
33
34/* a pending monitor request */
35struct ceph_mon_request {
36 struct ceph_mon_client *monc;
37 struct delayed_work delayed_work;
38 unsigned long delay;
39 ceph_monc_request_func_t do_request;
40};
41
42/*
43 * ceph_mon_generic_request is being used for the statfs and poolop requests
44 * which are bening done a bit differently because we need to get data back
45 * to the caller
46 */
47struct ceph_mon_generic_request {
48 struct kref kref;
49 u64 tid;
50 struct rb_node node;
51 int result;
52 void *buf;
53 int buf_len;
54 struct completion completion;
55 struct ceph_msg *request; /* original request */
56 struct ceph_msg *reply; /* and reply */
57};
58
59struct ceph_mon_client {
60 struct ceph_client *client;
61 struct ceph_monmap *monmap;
62
63 struct mutex mutex;
64 struct delayed_work delayed_work;
65
66 struct ceph_auth_client *auth;
67 struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe, *m_subscribe_ack;
68 int pending_auth;
69
70 bool hunting;
71 int cur_mon; /* last monitor i contacted */
72 unsigned long sub_sent, sub_renew_after;
73 struct ceph_connection *con;
74 bool have_fsid;
75
76 /* pending generic requests */
77 struct rb_root generic_request_tree;
78 int num_generic_requests;
79 u64 last_tid;
80
81 /* mds/osd map */
82 int want_mdsmap;
83 int want_next_osdmap; /* 1 = want, 2 = want+asked */
84 u32 have_osdmap, have_mdsmap;
85
86#ifdef CONFIG_DEBUG_FS
87 struct dentry *debugfs_file;
88#endif
89};
90
91extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end);
92extern int ceph_monmap_contains(struct ceph_monmap *m,
93 struct ceph_entity_addr *addr);
94
95extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl);
96extern void ceph_monc_stop(struct ceph_mon_client *monc);
97
98/*
99 * The model here is to indicate that we need a new map of at least
100 * epoch @want, and also call in when we receive a map. We will
101 * periodically rerequest the map from the monitor cluster until we
102 * get what we want.
103 */
104extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have);
105extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have);
106
107extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc);
108
109extern int ceph_monc_do_statfs(struct ceph_mon_client *monc,
110 struct ceph_statfs *buf);
111
112extern int ceph_monc_open_session(struct ceph_mon_client *monc);
113
114extern int ceph_monc_validate_auth(struct ceph_mon_client *monc);
115
116extern int ceph_monc_create_snapid(struct ceph_mon_client *monc,
117 u32 pool, u64 *snapid);
118
119extern int ceph_monc_delete_snapid(struct ceph_mon_client *monc,
120 u32 pool, u64 snapid);
121
122#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-30 22:20:33 -0500