#ifndef _FS_CEPH_MON_CLIENT_H #define _FS_CEPH_MON_CLIENT_H #include <linux/completion.h> #include <linux/rbtree.h> #include "messenger.h" #include "msgpool.h" struct ceph_client; struct ceph_mount_args; struct ceph_auth_client; /* * The monitor map enumerates the set of all monitors. */ struct ceph_monmap { struct ceph_fsid fsid; u32 epoch; u32 num_mon; struct ceph_entity_inst mon_inst[0]; }; struct ceph_mon_client; struct ceph_mon_statfs_request; /* * Generic mechanism for resending monitor requests. */ typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc, int newmon); /* a pending monitor request */ struct ceph_mon_request { struct ceph_mon_client *monc; struct delayed_work delayed_work; unsigned long delay; ceph_monc_request_func_t do_request; }; /* * statfs() is done a bit differently because we need to get data back * to the caller */ struct ceph_mon_statfs_request { u64 tid; struct rb_node node; int result; struct ceph_statfs *buf; struct completion completion; unsigned long last_attempt, delay; /* jiffies */ struct ceph_msg *request; /* original request */ }; struct ceph_mon_client { struct ceph_client *client; struct ceph_monmap *monmap; struct mutex mutex; struct delayed_work delayed_work; struct ceph_auth_client *auth; struct ceph_msg *m_auth; int pending_auth; bool hunting; int cur_mon; /* last monitor i contacted */ unsigned long sub_sent, sub_renew_after; struct ceph_connection *con; bool have_fsid; /* msg pools */ struct ceph_msgpool msgpool_subscribe_ack; struct ceph_msgpool msgpool_statfs_reply; struct ceph_msgpool msgpool_auth_reply; /* pending statfs requests */ struct rb_root statfs_request_tree; int num_statfs_requests; u64 last_tid; /* mds/osd map */ int want_next_osdmap; /* 1 = want, 2 = want+asked */ u32 have_osdmap, have_mdsmap; #ifdef CONFIG_DEBUG_FS struct dentry *debugfs_file; #endif }; extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end); extern int ceph_monmap_contains(struct ceph_monmap *m, struct ceph_entity_addr *addr); extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl); extern void ceph_monc_stop(struct ceph_mon_client *monc); /* * The model here is to indicate that we need a new map of at least * epoch @want, and also call in when we receive a map. We will * periodically rerequest the map from the monitor cluster until we * get what we want. */ extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have); extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have); extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc); extern int ceph_monc_do_statfs(struct ceph_mon_client *monc, struct ceph_statfs *buf); extern int ceph_monc_open_session(struct ceph_mon_client *monc); extern int ceph_monc_validate_auth(struct ceph_mon_client *monc); #endif