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1 | #ifndef _FS_CEPH_MON_CLIENT_H |
2 | #define _FS_CEPH_MON_CLIENT_H | |
3 | ||
4 | #include <linux/completion.h> | |
3143edd3 | 5 | #include <linux/kref.h> |
85ff03f6 | 6 | #include <linux/rbtree.h> |
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7 | |
8 | #include "messenger.h" | |
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9 | |
10 | struct ceph_client; | |
11 | struct ceph_mount_args; | |
4e7a5dcd | 12 | struct ceph_auth_client; |
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13 | |
14 | /* | |
15 | * The monitor map enumerates the set of all monitors. | |
16 | */ | |
17 | struct ceph_monmap { | |
18 | struct ceph_fsid fsid; | |
19 | u32 epoch; | |
20 | u32 num_mon; | |
21 | struct ceph_entity_inst mon_inst[0]; | |
22 | }; | |
23 | ||
24 | struct ceph_mon_client; | |
f8c76f6f | 25 | struct ceph_mon_generic_request; |
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26 | |
27 | ||
28 | /* | |
29 | * Generic mechanism for resending monitor requests. | |
30 | */ | |
31 | typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc, | |
32 | int newmon); | |
33 | ||
34 | /* a pending monitor request */ | |
35 | struct 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 | /* | |
f8c76f6f YS |
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 | |
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45 | * to the caller |
46 | */ | |
f8c76f6f | 47 | struct ceph_mon_generic_request { |
3143edd3 | 48 | struct kref kref; |
ba75bb98 | 49 | u64 tid; |
85ff03f6 | 50 | struct rb_node node; |
ba75bb98 | 51 | int result; |
f8c76f6f | 52 | void *buf; |
e56fa10e | 53 | int buf_len; |
ba75bb98 | 54 | struct completion completion; |
ba75bb98 | 55 | struct ceph_msg *request; /* original request */ |
3143edd3 | 56 | struct ceph_msg *reply; /* and reply */ |
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57 | }; |
58 | ||
59 | struct 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 | ||
4e7a5dcd | 66 | struct ceph_auth_client *auth; |
240ed68e | 67 | struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe, *m_subscribe_ack; |
9bd2e6f8 | 68 | int pending_auth; |
4e7a5dcd | 69 | |
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70 | bool hunting; |
71 | int cur_mon; /* last monitor i contacted */ | |
72 | unsigned long sub_sent, sub_renew_after; | |
73 | struct ceph_connection *con; | |
4e7a5dcd | 74 | bool have_fsid; |
ba75bb98 | 75 | |
f8c76f6f YS |
76 | /* pending generic requests */ |
77 | struct rb_root generic_request_tree; | |
78 | int num_generic_requests; | |
ba75bb98 SW |
79 | u64 last_tid; |
80 | ||
4e7a5dcd | 81 | /* mds/osd map */ |
3d14c5d2 | 82 | int want_mdsmap; |
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83 | int want_next_osdmap; /* 1 = want, 2 = want+asked */ |
84 | u32 have_osdmap, have_mdsmap; | |
85 | ||
039934b8 | 86 | #ifdef CONFIG_DEBUG_FS |
ba75bb98 | 87 | struct dentry *debugfs_file; |
039934b8 | 88 | #endif |
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89 | }; |
90 | ||
91 | extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end); | |
92 | extern int ceph_monmap_contains(struct ceph_monmap *m, | |
93 | struct ceph_entity_addr *addr); | |
94 | ||
95 | extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl); | |
96 | extern 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 | */ | |
104 | extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have); | |
105 | extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have); | |
106 | ||
107 | extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc); | |
108 | ||
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109 | extern int ceph_monc_do_statfs(struct ceph_mon_client *monc, |
110 | struct ceph_statfs *buf); | |
111 | ||
4e7a5dcd SW |
112 | extern int ceph_monc_open_session(struct ceph_mon_client *monc); |
113 | ||
9bd2e6f8 SW |
114 | extern int ceph_monc_validate_auth(struct ceph_mon_client *monc); |
115 | ||
e56fa10e YS |
116 | extern int ceph_monc_create_snapid(struct ceph_mon_client *monc, |
117 | u32 pool, u64 *snapid); | |
ba75bb98 | 118 | |
e56fa10e YS |
119 | extern int ceph_monc_delete_snapid(struct ceph_mon_client *monc, |
120 | u32 pool, u64 snapid); | |
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121 | |
122 | #endif |