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>
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_statfs_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 * statfs() is done a bit differently because we need to get data back
46 struct ceph_mon_statfs_request {
51 struct ceph_statfs *buf;
52 struct completion completion;
53 struct ceph_msg *request; /* original request */
54 struct ceph_msg *reply; /* and reply */
57 struct ceph_mon_client {
58 struct ceph_client *client;
59 struct ceph_monmap *monmap;
62 struct delayed_work delayed_work;
64 struct ceph_auth_client *auth;
65 struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe_ack;
69 int cur_mon; /* last monitor i contacted */
70 unsigned long sub_sent, sub_renew_after;
71 struct ceph_connection *con;
74 /* pending statfs requests */
75 struct rb_root statfs_request_tree;
76 int num_statfs_requests;
80 int want_next_osdmap; /* 1 = want, 2 = want+asked */
81 u32 have_osdmap, have_mdsmap;
83 #ifdef CONFIG_DEBUG_FS
84 struct dentry *debugfs_file;
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);
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);
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
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);
104 extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc);
106 extern int ceph_monc_do_statfs(struct ceph_mon_client *monc,
107 struct ceph_statfs *buf);
109 extern int ceph_monc_open_session(struct ceph_mon_client *monc);
111 extern int ceph_monc_validate_auth(struct ceph_mon_client *monc);