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152 lines
3.8 KiB
152 lines
3.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#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[]; |
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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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typedef void (*ceph_monc_callback_t)(struct ceph_mon_generic_request *); |
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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 ceph_mon_client *monc; |
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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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struct completion completion; |
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ceph_monc_callback_t complete_cb; |
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u64 private_data; /* r_tid/linger_id */ |
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struct ceph_msg *request; /* original request */ |
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struct ceph_msg *reply; /* and reply */ |
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union { |
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struct ceph_statfs *st; |
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u64 newest; |
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} u; |
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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_renew_after; |
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unsigned long sub_renew_sent; |
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struct ceph_connection con; |
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bool had_a_connection; |
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int hunt_mult; /* [1..CEPH_MONC_HUNT_MAX_MULT] */ |
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/* pending generic requests */ |
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struct rb_root generic_request_tree; |
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u64 last_tid; |
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/* subs, indexed with CEPH_SUB_* */ |
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struct { |
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struct ceph_mon_subscribe_item item; |
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bool want; |
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u32 have; /* epoch */ |
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} subs[4]; |
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int fs_cluster_id; /* "mdsmap.<id>" sub */ |
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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 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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extern void ceph_monc_reopen_session(struct ceph_mon_client *monc); |
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enum { |
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CEPH_SUB_MONMAP = 0, |
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CEPH_SUB_OSDMAP, |
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CEPH_SUB_FSMAP, |
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CEPH_SUB_MDSMAP, |
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}; |
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extern const char *ceph_sub_str[]; |
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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 @epoch, 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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bool ceph_monc_want_map(struct ceph_mon_client *monc, int sub, u32 epoch, |
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bool continuous); |
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void ceph_monc_got_map(struct ceph_mon_client *monc, int sub, u32 epoch); |
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void ceph_monc_renew_subs(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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int ceph_monc_do_statfs(struct ceph_mon_client *monc, u64 data_pool, |
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struct ceph_statfs *buf); |
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int ceph_monc_get_version(struct ceph_mon_client *monc, const char *what, |
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u64 *newest); |
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int ceph_monc_get_version_async(struct ceph_mon_client *monc, const char *what, |
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ceph_monc_callback_t cb, u64 private_data); |
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int ceph_monc_blocklist_add(struct ceph_mon_client *monc, |
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struct ceph_entity_addr *client_addr); |
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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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