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>
12 struct ceph_mount_args;
13 struct ceph_auth_client;
16 * The monitor map enumerates the set of all monitors.
19 struct ceph_fsid fsid;
22 struct ceph_entity_inst mon_inst[0];
25 struct ceph_mon_client;
26 struct ceph_mon_statfs_request;
30 * Generic mechanism for resending monitor requests.
32 typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc,
35 /* a pending monitor request */
36 struct ceph_mon_request {
37 struct ceph_mon_client *monc;
38 struct delayed_work delayed_work;
40 ceph_monc_request_func_t do_request;
44 * statfs() is done a bit differently because we need to get data back
47 struct ceph_mon_statfs_request {
52 struct ceph_statfs *buf;
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;
70 int cur_mon; /* last monitor i contacted */
71 unsigned long sub_sent, sub_renew_after;
72 struct ceph_connection *con;
76 struct ceph_msgpool msgpool_subscribe_ack;
78 /* pending statfs requests */
79 struct rb_root statfs_request_tree;
80 int num_statfs_requests;
84 int want_next_osdmap; /* 1 = want, 2 = want+asked */
85 u32 have_osdmap, have_mdsmap;
87 #ifdef CONFIG_DEBUG_FS
88 struct dentry *debugfs_file;
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);
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);
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
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);
108 extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc);
110 extern int ceph_monc_do_statfs(struct ceph_mon_client *monc,
111 struct ceph_statfs *buf);
113 extern int ceph_monc_open_session(struct ceph_mon_client *monc);
115 extern int ceph_monc_validate_auth(struct ceph_mon_client *monc);