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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; | |
25 | struct ceph_mon_statfs_request; | |
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 | /* | |
43 | * statfs() is done a bit differently because we need to get data back | |
44 | * to the caller | |
45 | */ | |
46 | struct ceph_mon_statfs_request { | |
3143edd3 | 47 | struct kref kref; |
ba75bb98 | 48 | u64 tid; |
85ff03f6 | 49 | struct rb_node node; |
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50 | int result; |
51 | struct ceph_statfs *buf; | |
52 | struct completion completion; | |
ba75bb98 | 53 | struct ceph_msg *request; /* original request */ |
3143edd3 | 54 | struct ceph_msg *reply; /* and reply */ |
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55 | }; |
56 | ||
57 | struct ceph_mon_client { | |
58 | struct ceph_client *client; | |
59 | struct ceph_monmap *monmap; | |
60 | ||
61 | struct mutex mutex; | |
62 | struct delayed_work delayed_work; | |
63 | ||
4e7a5dcd | 64 | struct ceph_auth_client *auth; |
7c315c55 | 65 | struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe_ack; |
9bd2e6f8 | 66 | int pending_auth; |
4e7a5dcd | 67 | |
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68 | bool hunting; |
69 | int cur_mon; /* last monitor i contacted */ | |
70 | unsigned long sub_sent, sub_renew_after; | |
71 | struct ceph_connection *con; | |
4e7a5dcd | 72 | bool have_fsid; |
ba75bb98 | 73 | |
ba75bb98 | 74 | /* pending statfs requests */ |
85ff03f6 | 75 | struct rb_root statfs_request_tree; |
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76 | int num_statfs_requests; |
77 | u64 last_tid; | |
78 | ||
4e7a5dcd | 79 | /* mds/osd map */ |
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80 | int want_next_osdmap; /* 1 = want, 2 = want+asked */ |
81 | u32 have_osdmap, have_mdsmap; | |
82 | ||
039934b8 | 83 | #ifdef CONFIG_DEBUG_FS |
ba75bb98 | 84 | struct dentry *debugfs_file; |
039934b8 | 85 | #endif |
ba75bb98 SW |
86 | }; |
87 | ||
88 | extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end); | |
89 | extern int ceph_monmap_contains(struct ceph_monmap *m, | |
90 | struct ceph_entity_addr *addr); | |
91 | ||
92 | extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl); | |
93 | extern void ceph_monc_stop(struct ceph_mon_client *monc); | |
94 | ||
95 | /* | |
96 | * The model here is to indicate that we need a new map of at least | |
97 | * epoch @want, and also call in when we receive a map. We will | |
98 | * periodically rerequest the map from the monitor cluster until we | |
99 | * get what we want. | |
100 | */ | |
101 | extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have); | |
102 | extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have); | |
103 | ||
104 | extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc); | |
105 | ||
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106 | extern int ceph_monc_do_statfs(struct ceph_mon_client *monc, |
107 | struct ceph_statfs *buf); | |
108 | ||
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109 | extern int ceph_monc_open_session(struct ceph_mon_client *monc); |
110 | ||
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111 | extern int ceph_monc_validate_auth(struct ceph_mon_client *monc); |
112 | ||
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113 | |
114 | ||
115 | #endif |