1 #ifndef _FS_CEPH_MON_CLIENT_H
2 #define _FS_CEPH_MON_CLIENT_H
4 #include <linux/completion.h>
5 #include <linux/kref.h>
6 #include <linux/rbtree.h>
8 #include <linux/ceph/messenger.h>
11 struct ceph_mount_args;
12 struct ceph_auth_client;
15 * The monitor map enumerates the set of all monitors.
18 struct ceph_fsid fsid;
21 struct ceph_entity_inst mon_inst[0];
24 struct ceph_mon_client;
25 struct ceph_mon_generic_request;
29 * Generic mechanism for resending monitor requests.
31 typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc,
34 /* a pending monitor request */
35 struct ceph_mon_request {
36 struct ceph_mon_client *monc;
37 struct delayed_work delayed_work;
39 ceph_monc_request_func_t do_request;
43 * ceph_mon_generic_request is being used for the statfs and
44 * mon_get_version requests which are being done a bit differently
45 * because we need to get data back to the caller
47 struct ceph_mon_generic_request {
53 struct completion completion;
54 struct ceph_msg *request; /* original request */
55 struct ceph_msg *reply; /* and reply */
58 struct ceph_mon_client {
59 struct ceph_client *client;
60 struct ceph_monmap *monmap;
63 struct delayed_work delayed_work;
65 struct ceph_auth_client *auth;
66 struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe, *m_subscribe_ack;
70 int cur_mon; /* last monitor i contacted */
71 unsigned long sub_sent, sub_renew_after;
72 struct ceph_connection con;
74 /* pending generic requests */
75 struct rb_root generic_request_tree;
76 int num_generic_requests;
81 int want_next_osdmap; /* 1 = want, 2 = want+asked */
82 u32 have_osdmap, have_mdsmap;
84 #ifdef CONFIG_DEBUG_FS
85 struct dentry *debugfs_file;
89 extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end);
90 extern int ceph_monmap_contains(struct ceph_monmap *m,
91 struct ceph_entity_addr *addr);
93 extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl);
94 extern void ceph_monc_stop(struct ceph_mon_client *monc);
97 * The model here is to indicate that we need a new map of at least
98 * epoch @want, and also call in when we receive a map. We will
99 * periodically rerequest the map from the monitor cluster until we
102 extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have);
103 extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have);
105 extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc);
106 extern int ceph_monc_wait_osdmap(struct ceph_mon_client *monc, u32 epoch,
107 unsigned long timeout);
109 extern int ceph_monc_do_statfs(struct ceph_mon_client *monc,
110 struct ceph_statfs *buf);
112 extern int ceph_monc_do_get_version(struct ceph_mon_client *monc,
113 const char *what, u64 *newest);
115 extern int ceph_monc_open_session(struct ceph_mon_client *monc);
117 extern int ceph_monc_validate_auth(struct ceph_mon_client *monc);