| #ifndef _FS_CEPH_OSD_CLIENT_H |
| #define _FS_CEPH_OSD_CLIENT_H |
| |
| #include <linux/completion.h> |
| #include <linux/kref.h> |
| #include <linux/mempool.h> |
| #include <linux/rbtree.h> |
| |
| #include <linux/ceph/types.h> |
| #include <linux/ceph/osdmap.h> |
| #include <linux/ceph/messenger.h> |
| #include <linux/ceph/auth.h> |
| #include <linux/ceph/pagelist.h> |
| |
| struct ceph_msg; |
| struct ceph_snap_context; |
| struct ceph_osd_request; |
| struct ceph_osd_client; |
| |
| /* |
| * completion callback for async writepages |
| */ |
| typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *); |
| typedef void (*ceph_osdc_unsafe_callback_t)(struct ceph_osd_request *, bool); |
| |
| #define CEPH_HOMELESS_OSD -1 |
| |
| /* a given osd we're communicating with */ |
| struct ceph_osd { |
| atomic_t o_ref; |
| struct ceph_osd_client *o_osdc; |
| int o_osd; |
| int o_incarnation; |
| struct rb_node o_node; |
| struct ceph_connection o_con; |
| struct rb_root o_requests; |
| struct rb_root o_linger_requests; |
| struct list_head o_osd_lru; |
| struct ceph_auth_handshake o_auth; |
| unsigned long lru_ttl; |
| struct list_head o_keepalive_item; |
| struct mutex lock; |
| }; |
| |
| #define CEPH_OSD_SLAB_OPS 2 |
| #define CEPH_OSD_MAX_OPS 16 |
| |
| enum ceph_osd_data_type { |
| CEPH_OSD_DATA_TYPE_NONE = 0, |
| CEPH_OSD_DATA_TYPE_PAGES, |
| CEPH_OSD_DATA_TYPE_PAGELIST, |
| #ifdef CONFIG_BLOCK |
| CEPH_OSD_DATA_TYPE_BIO, |
| #endif /* CONFIG_BLOCK */ |
| }; |
| |
| struct ceph_osd_data { |
| enum ceph_osd_data_type type; |
| union { |
| struct { |
| struct page **pages; |
| u64 length; |
| u32 alignment; |
| bool pages_from_pool; |
| bool own_pages; |
| }; |
| struct ceph_pagelist *pagelist; |
| #ifdef CONFIG_BLOCK |
| struct { |
| struct bio *bio; /* list of bios */ |
| size_t bio_length; /* total in list */ |
| }; |
| #endif /* CONFIG_BLOCK */ |
| }; |
| }; |
| |
| struct ceph_osd_req_op { |
| u16 op; /* CEPH_OSD_OP_* */ |
| u32 flags; /* CEPH_OSD_OP_FLAG_* */ |
| u32 indata_len; /* request */ |
| u32 outdata_len; /* reply */ |
| s32 rval; |
| |
| union { |
| struct ceph_osd_data raw_data_in; |
| struct { |
| u64 offset, length; |
| u64 truncate_size; |
| u32 truncate_seq; |
| struct ceph_osd_data osd_data; |
| } extent; |
| struct { |
| u32 name_len; |
| u32 value_len; |
| __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */ |
| __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */ |
| struct ceph_osd_data osd_data; |
| } xattr; |
| struct { |
| const char *class_name; |
| const char *method_name; |
| struct ceph_osd_data request_info; |
| struct ceph_osd_data request_data; |
| struct ceph_osd_data response_data; |
| __u8 class_len; |
| __u8 method_len; |
| u32 indata_len; |
| } cls; |
| struct { |
| u64 cookie; |
| __u8 op; /* CEPH_OSD_WATCH_OP_ */ |
| u32 gen; |
| } watch; |
| struct { |
| struct ceph_osd_data request_data; |
| } notify_ack; |
| struct { |
| u64 cookie; |
| struct ceph_osd_data request_data; |
| struct ceph_osd_data response_data; |
| } notify; |
| struct { |
| u64 expected_object_size; |
| u64 expected_write_size; |
| } alloc_hint; |
| }; |
| }; |
| |
| struct ceph_osd_request_target { |
| struct ceph_object_id base_oid; |
| struct ceph_object_locator base_oloc; |
| struct ceph_object_id target_oid; |
| struct ceph_object_locator target_oloc; |
| |
| struct ceph_pg pgid; |
| u32 pg_num; |
| u32 pg_num_mask; |
| struct ceph_osds acting; |
| struct ceph_osds up; |
| int size; |
| int min_size; |
| bool sort_bitwise; |
| |
| unsigned int flags; /* CEPH_OSD_FLAG_* */ |
| bool paused; |
| |
| int osd; |
| }; |
| |
| /* an in-flight request */ |
| struct ceph_osd_request { |
| u64 r_tid; /* unique for this client */ |
| struct rb_node r_node; |
| struct rb_node r_mc_node; /* map check */ |
| struct ceph_osd *r_osd; |
| |
| struct ceph_osd_request_target r_t; |
| #define r_base_oid r_t.base_oid |
| #define r_base_oloc r_t.base_oloc |
| #define r_flags r_t.flags |
| |
| struct ceph_msg *r_request, *r_reply; |
| u32 r_sent; /* >0 if r_request is sending/sent */ |
| |
| /* request osd ops array */ |
| unsigned int r_num_ops; |
| |
| int r_result; |
| bool r_got_reply; |
| |
| struct ceph_osd_client *r_osdc; |
| struct kref r_kref; |
| bool r_mempool; |
| struct completion r_completion; |
| struct completion r_safe_completion; /* fsync waiter */ |
| ceph_osdc_callback_t r_callback; |
| ceph_osdc_unsafe_callback_t r_unsafe_callback; |
| struct list_head r_unsafe_item; |
| |
| struct inode *r_inode; /* for use by callbacks */ |
| void *r_priv; /* ditto */ |
| |
| /* set by submitter */ |
| u64 r_snapid; /* for reads, CEPH_NOSNAP o/w */ |
| struct ceph_snap_context *r_snapc; /* for writes */ |
| struct timespec r_mtime; /* ditto */ |
| u64 r_data_offset; /* ditto */ |
| bool r_linger; /* don't resend on failure */ |
| |
| /* internal */ |
| unsigned long r_stamp; /* jiffies, send or check time */ |
| int r_attempts; |
| struct ceph_eversion r_replay_version; /* aka reassert_version */ |
| u32 r_last_force_resend; |
| u32 r_map_dne_bound; |
| |
| struct ceph_osd_req_op r_ops[]; |
| }; |
| |
| struct ceph_request_redirect { |
| struct ceph_object_locator oloc; |
| }; |
| |
| typedef void (*rados_watchcb2_t)(void *arg, u64 notify_id, u64 cookie, |
| u64 notifier_id, void *data, size_t data_len); |
| typedef void (*rados_watcherrcb_t)(void *arg, u64 cookie, int err); |
| |
| struct ceph_osd_linger_request { |
| struct ceph_osd_client *osdc; |
| u64 linger_id; |
| bool committed; |
| bool is_watch; /* watch or notify */ |
| |
| struct ceph_osd *osd; |
| struct ceph_osd_request *reg_req; |
| struct ceph_osd_request *ping_req; |
| unsigned long ping_sent; |
| unsigned long watch_valid_thru; |
| struct list_head pending_lworks; |
| |
| struct ceph_osd_request_target t; |
| u32 last_force_resend; |
| u32 map_dne_bound; |
| |
| struct timespec mtime; |
| |
| struct kref kref; |
| struct mutex lock; |
| struct rb_node node; /* osd */ |
| struct rb_node osdc_node; /* osdc */ |
| struct rb_node mc_node; /* map check */ |
| struct list_head scan_item; |
| |
| struct completion reg_commit_wait; |
| struct completion notify_finish_wait; |
| int reg_commit_error; |
| int notify_finish_error; |
| int last_error; |
| |
| u32 register_gen; |
| u64 notify_id; |
| |
| rados_watchcb2_t wcb; |
| rados_watcherrcb_t errcb; |
| void *data; |
| |
| struct page ***preply_pages; |
| size_t *preply_len; |
| }; |
| |
| struct ceph_osd_client { |
| struct ceph_client *client; |
| |
| struct ceph_osdmap *osdmap; /* current map */ |
| struct rw_semaphore lock; |
| |
| struct rb_root osds; /* osds */ |
| struct list_head osd_lru; /* idle osds */ |
| spinlock_t osd_lru_lock; |
| struct ceph_osd homeless_osd; |
| atomic64_t last_tid; /* tid of last request */ |
| u64 last_linger_id; |
| struct rb_root linger_requests; /* lingering requests */ |
| struct rb_root map_checks; |
| struct rb_root linger_map_checks; |
| atomic_t num_requests; |
| atomic_t num_homeless; |
| struct delayed_work timeout_work; |
| struct delayed_work osds_timeout_work; |
| #ifdef CONFIG_DEBUG_FS |
| struct dentry *debugfs_file; |
| #endif |
| |
| mempool_t *req_mempool; |
| |
| struct ceph_msgpool msgpool_op; |
| struct ceph_msgpool msgpool_op_reply; |
| |
| struct workqueue_struct *notify_wq; |
| }; |
| |
| extern int ceph_osdc_setup(void); |
| extern void ceph_osdc_cleanup(void); |
| |
| extern int ceph_osdc_init(struct ceph_osd_client *osdc, |
| struct ceph_client *client); |
| extern void ceph_osdc_stop(struct ceph_osd_client *osdc); |
| |
| extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, |
| struct ceph_msg *msg); |
| extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, |
| struct ceph_msg *msg); |
| |
| extern void osd_req_op_init(struct ceph_osd_request *osd_req, |
| unsigned int which, u16 opcode, u32 flags); |
| |
| extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *, |
| unsigned int which, |
| struct page **pages, u64 length, |
| u32 alignment, bool pages_from_pool, |
| bool own_pages); |
| |
| extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
| unsigned int which, u16 opcode, |
| u64 offset, u64 length, |
| u64 truncate_size, u32 truncate_seq); |
| extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
| unsigned int which, u64 length); |
| extern void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
| unsigned int which, u64 offset_inc); |
| |
| extern struct ceph_osd_data *osd_req_op_extent_osd_data( |
| struct ceph_osd_request *osd_req, |
| unsigned int which); |
| |
| extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *, |
| unsigned int which, |
| struct page **pages, u64 length, |
| u32 alignment, bool pages_from_pool, |
| bool own_pages); |
| extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *, |
| unsigned int which, |
| struct ceph_pagelist *pagelist); |
| #ifdef CONFIG_BLOCK |
| extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *, |
| unsigned int which, |
| struct bio *bio, size_t bio_length); |
| #endif /* CONFIG_BLOCK */ |
| |
| extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *, |
| unsigned int which, |
| struct ceph_pagelist *pagelist); |
| extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *, |
| unsigned int which, |
| struct page **pages, u64 length, |
| u32 alignment, bool pages_from_pool, |
| bool own_pages); |
| extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *, |
| unsigned int which, |
| struct page **pages, u64 length, |
| u32 alignment, bool pages_from_pool, |
| bool own_pages); |
| |
| extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req, |
| unsigned int which, u16 opcode, |
| const char *class, const char *method); |
| extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
| u16 opcode, const char *name, const void *value, |
| size_t size, u8 cmp_op, u8 cmp_mode); |
| extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
| unsigned int which, |
| u64 expected_object_size, |
| u64 expected_write_size); |
| |
| extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
| struct ceph_snap_context *snapc, |
| unsigned int num_ops, |
| bool use_mempool, |
| gfp_t gfp_flags); |
| int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp); |
| |
| extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, |
| struct ceph_file_layout *layout, |
| struct ceph_vino vino, |
| u64 offset, u64 *len, |
| unsigned int which, int num_ops, |
| int opcode, int flags, |
| struct ceph_snap_context *snapc, |
| u32 truncate_seq, u64 truncate_size, |
| bool use_mempool); |
| |
| extern void ceph_osdc_get_request(struct ceph_osd_request *req); |
| extern void ceph_osdc_put_request(struct ceph_osd_request *req); |
| |
| extern int ceph_osdc_start_request(struct ceph_osd_client *osdc, |
| struct ceph_osd_request *req, |
| bool nofail); |
| extern void ceph_osdc_cancel_request(struct ceph_osd_request *req); |
| extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc, |
| struct ceph_osd_request *req); |
| extern void ceph_osdc_sync(struct ceph_osd_client *osdc); |
| |
| extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc); |
| void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc); |
| |
| extern int ceph_osdc_readpages(struct ceph_osd_client *osdc, |
| struct ceph_vino vino, |
| struct ceph_file_layout *layout, |
| u64 off, u64 *plen, |
| u32 truncate_seq, u64 truncate_size, |
| struct page **pages, int nr_pages, |
| int page_align); |
| |
| extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, |
| struct ceph_vino vino, |
| struct ceph_file_layout *layout, |
| struct ceph_snap_context *sc, |
| u64 off, u64 len, |
| u32 truncate_seq, u64 truncate_size, |
| struct timespec *mtime, |
| struct page **pages, int nr_pages); |
| |
| /* watch/notify */ |
| struct ceph_osd_linger_request * |
| ceph_osdc_watch(struct ceph_osd_client *osdc, |
| struct ceph_object_id *oid, |
| struct ceph_object_locator *oloc, |
| rados_watchcb2_t wcb, |
| rados_watcherrcb_t errcb, |
| void *data); |
| int ceph_osdc_unwatch(struct ceph_osd_client *osdc, |
| struct ceph_osd_linger_request *lreq); |
| |
| int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, |
| struct ceph_object_id *oid, |
| struct ceph_object_locator *oloc, |
| u64 notify_id, |
| u64 cookie, |
| void *payload, |
| size_t payload_len); |
| int ceph_osdc_notify(struct ceph_osd_client *osdc, |
| struct ceph_object_id *oid, |
| struct ceph_object_locator *oloc, |
| void *payload, |
| size_t payload_len, |
| u32 timeout, |
| struct page ***preply_pages, |
| size_t *preply_len); |
| int ceph_osdc_watch_check(struct ceph_osd_client *osdc, |
| struct ceph_osd_linger_request *lreq); |
| #endif |
| |