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ba75bb98 SW |
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> |
ba75bb98 | 7 | |
a1ce3928 | 8 | #include <linux/ceph/messenger.h> |
ba75bb98 SW |
9 | |
10 | struct ceph_client; | |
11 | struct ceph_mount_args; | |
4e7a5dcd | 12 | struct ceph_auth_client; |
ba75bb98 SW |
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; |
ba75bb98 SW |
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 | |
ba75bb98 SW |
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 */ |
ba75bb98 SW |
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 | |
ba75bb98 SW |
70 | bool hunting; |
71 | int cur_mon; /* last monitor i contacted */ | |
72 | unsigned long sub_sent, sub_renew_after; | |
67130934 | 73 | struct ceph_connection con; |
ba75bb98 | 74 | |
f8c76f6f YS |
75 | /* pending generic requests */ |
76 | struct rb_root generic_request_tree; | |
77 | int num_generic_requests; | |
ba75bb98 SW |
78 | u64 last_tid; |
79 | ||
4e7a5dcd | 80 | /* mds/osd map */ |
3d14c5d2 | 81 | int want_mdsmap; |
ba75bb98 SW |
82 | int want_next_osdmap; /* 1 = want, 2 = want+asked */ |
83 | u32 have_osdmap, have_mdsmap; | |
84 | ||
039934b8 | 85 | #ifdef CONFIG_DEBUG_FS |
ba75bb98 | 86 | struct dentry *debugfs_file; |
039934b8 | 87 | #endif |
ba75bb98 SW |
88 | }; |
89 | ||
90 | extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end); | |
91 | extern int ceph_monmap_contains(struct ceph_monmap *m, | |
92 | struct ceph_entity_addr *addr); | |
93 | ||
94 | extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl); | |
95 | extern void ceph_monc_stop(struct ceph_mon_client *monc); | |
96 | ||
97 | /* | |
98 | * The model here is to indicate that we need a new map of at least | |
99 | * epoch @want, and also call in when we receive a map. We will | |
100 | * periodically rerequest the map from the monitor cluster until we | |
101 | * get what we want. | |
102 | */ | |
103 | extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have); | |
104 | extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have); | |
105 | ||
106 | extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc); | |
107 | ||
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108 | extern int ceph_monc_do_statfs(struct ceph_mon_client *monc, |
109 | struct ceph_statfs *buf); | |
110 | ||
4e7a5dcd SW |
111 | extern int ceph_monc_open_session(struct ceph_mon_client *monc); |
112 | ||
9bd2e6f8 SW |
113 | extern int ceph_monc_validate_auth(struct ceph_mon_client *monc); |
114 | ||
e56fa10e YS |
115 | extern int ceph_monc_create_snapid(struct ceph_mon_client *monc, |
116 | u32 pool, u64 *snapid); | |
ba75bb98 | 117 | |
e56fa10e YS |
118 | extern int ceph_monc_delete_snapid(struct ceph_mon_client *monc, |
119 | u32 pool, u64 snapid); | |
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120 | |
121 | #endif |