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1 | #ifndef _FS_CEPH_MON_CLIENT_H |
2 | #define _FS_CEPH_MON_CLIENT_H | |
3 | ||
4 | #include <linux/completion.h> | |
85ff03f6 | 5 | #include <linux/rbtree.h> |
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6 | |
7 | #include "messenger.h" | |
8 | #include "msgpool.h" | |
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 { | |
47 | u64 tid; | |
85ff03f6 | 48 | struct rb_node node; |
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49 | int result; |
50 | struct ceph_statfs *buf; | |
51 | struct completion completion; | |
52 | unsigned long last_attempt, delay; /* jiffies */ | |
53 | struct ceph_msg *request; /* original request */ | |
54 | }; | |
55 | ||
56 | struct ceph_mon_client { | |
57 | struct ceph_client *client; | |
58 | struct ceph_monmap *monmap; | |
59 | ||
60 | struct mutex mutex; | |
61 | struct delayed_work delayed_work; | |
62 | ||
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63 | struct ceph_auth_client *auth; |
64 | struct ceph_msg *m_auth; | |
9bd2e6f8 | 65 | int pending_auth; |
4e7a5dcd | 66 | |
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67 | bool hunting; |
68 | int cur_mon; /* last monitor i contacted */ | |
69 | unsigned long sub_sent, sub_renew_after; | |
70 | struct ceph_connection *con; | |
4e7a5dcd | 71 | bool have_fsid; |
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72 | |
73 | /* msg pools */ | |
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74 | struct ceph_msgpool msgpool_subscribe_ack; |
75 | struct ceph_msgpool msgpool_statfs_reply; | |
4e7a5dcd | 76 | struct ceph_msgpool msgpool_auth_reply; |
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77 | |
78 | /* pending statfs requests */ | |
85ff03f6 | 79 | struct rb_root statfs_request_tree; |
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80 | int num_statfs_requests; |
81 | u64 last_tid; | |
82 | ||
4e7a5dcd | 83 | /* mds/osd map */ |
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84 | int want_next_osdmap; /* 1 = want, 2 = want+asked */ |
85 | u32 have_osdmap, have_mdsmap; | |
86 | ||
039934b8 | 87 | #ifdef CONFIG_DEBUG_FS |
ba75bb98 | 88 | struct dentry *debugfs_file; |
039934b8 | 89 | #endif |
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90 | }; |
91 | ||
92 | extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end); | |
93 | extern int ceph_monmap_contains(struct ceph_monmap *m, | |
94 | struct ceph_entity_addr *addr); | |
95 | ||
96 | extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl); | |
97 | extern void ceph_monc_stop(struct ceph_mon_client *monc); | |
98 | ||
99 | /* | |
100 | * The model here is to indicate that we need a new map of at least | |
101 | * epoch @want, and also call in when we receive a map. We will | |
102 | * periodically rerequest the map from the monitor cluster until we | |
103 | * get what we want. | |
104 | */ | |
105 | extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have); | |
106 | extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have); | |
107 | ||
108 | extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc); | |
109 | ||
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110 | extern int ceph_monc_do_statfs(struct ceph_mon_client *monc, |
111 | struct ceph_statfs *buf); | |
112 | ||
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113 | extern int ceph_monc_open_session(struct ceph_mon_client *monc); |
114 | ||
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115 | extern int ceph_monc_validate_auth(struct ceph_mon_client *monc); |
116 | ||
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117 | |
118 | ||
119 | #endif |