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119 lines
3.1 KiB
119 lines
3.1 KiB
#ifndef _FS_CEPH_MON_CLIENT_H |
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#define _FS_CEPH_MON_CLIENT_H |
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#include <linux/completion.h> |
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#include <linux/kref.h> |
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#include <linux/rbtree.h> |
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#include <linux/ceph/messenger.h> |
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struct ceph_client; |
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struct ceph_mount_args; |
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struct ceph_auth_client; |
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/* |
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* The monitor map enumerates the set of all monitors. |
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*/ |
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struct ceph_monmap { |
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struct ceph_fsid fsid; |
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u32 epoch; |
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u32 num_mon; |
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struct ceph_entity_inst mon_inst[0]; |
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}; |
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struct ceph_mon_client; |
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struct ceph_mon_generic_request; |
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/* |
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* Generic mechanism for resending monitor requests. |
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*/ |
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typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc, |
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int newmon); |
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/* a pending monitor request */ |
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struct ceph_mon_request { |
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struct ceph_mon_client *monc; |
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struct delayed_work delayed_work; |
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unsigned long delay; |
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ceph_monc_request_func_t do_request; |
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}; |
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/* |
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* ceph_mon_generic_request is being used for the statfs and |
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* mon_get_version requests which are being done a bit differently |
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* because we need to get data back to the caller |
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*/ |
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struct ceph_mon_generic_request { |
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struct kref kref; |
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u64 tid; |
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struct rb_node node; |
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int result; |
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void *buf; |
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struct completion completion; |
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struct ceph_msg *request; /* original request */ |
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struct ceph_msg *reply; /* and reply */ |
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}; |
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struct ceph_mon_client { |
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struct ceph_client *client; |
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struct ceph_monmap *monmap; |
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struct mutex mutex; |
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struct delayed_work delayed_work; |
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struct ceph_auth_client *auth; |
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struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe, *m_subscribe_ack; |
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int pending_auth; |
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bool hunting; |
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int cur_mon; /* last monitor i contacted */ |
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unsigned long sub_sent, sub_renew_after; |
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struct ceph_connection con; |
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/* pending generic requests */ |
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struct rb_root generic_request_tree; |
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int num_generic_requests; |
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u64 last_tid; |
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/* mds/osd map */ |
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int want_mdsmap; |
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int want_next_osdmap; /* 1 = want, 2 = want+asked */ |
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u32 have_osdmap, have_mdsmap; |
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#ifdef CONFIG_DEBUG_FS |
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struct dentry *debugfs_file; |
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#endif |
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}; |
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extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end); |
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extern int ceph_monmap_contains(struct ceph_monmap *m, |
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struct ceph_entity_addr *addr); |
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extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl); |
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extern void ceph_monc_stop(struct ceph_mon_client *monc); |
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/* |
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* The model here is to indicate that we need a new map of at least |
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* epoch @want, and also call in when we receive a map. We will |
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* periodically rerequest the map from the monitor cluster until we |
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* get what we want. |
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*/ |
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extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have); |
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extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have); |
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extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc); |
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extern int ceph_monc_wait_osdmap(struct ceph_mon_client *monc, u32 epoch, |
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unsigned long timeout); |
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extern int ceph_monc_do_statfs(struct ceph_mon_client *monc, |
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struct ceph_statfs *buf); |
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extern int ceph_monc_do_get_version(struct ceph_mon_client *monc, |
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const char *what, u64 *newest); |
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extern int ceph_monc_open_session(struct ceph_mon_client *monc); |
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extern int ceph_monc_validate_auth(struct ceph_mon_client *monc); |
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#endif
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