[mirror_ubuntu-artful-kernel.git] / include / linux / ceph / osd_client.h

#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/refcount.h>

#include <linux/ceph/types.h>
#include <linux/ceph/osdmap.h>
#include <linux/ceph/messenger.h>
#include <linux/ceph/msgpool.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 *);

#define CEPH_HOMELESS_OSD	-1

/* a given osd we're communicating with */
struct ceph_osd {
	refcount_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 {
			struct ceph_osd_data response_data;
		} list_watchers;
		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;

	u32 last_force_resend;

	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;

	struct ceph_osd_client *r_osdc;
	struct kref       r_kref;
	bool              r_mempool;
	struct completion r_completion;       /* private to osd_client.c */
	ceph_osdc_callback_t r_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 */
	bool r_abort_on_full;		      /* return ENOSPC when full */

	/* internal */
	unsigned long r_stamp;                /* jiffies, send or check time */
	unsigned long r_start_stamp;          /* jiffies */
	int r_attempts;
	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 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_watch_item {
	struct ceph_entity_name name;
	u64 cookie;
	struct ceph_entity_addr addr;
};

#define CEPH_LINGER_ID_START	0xffff000000000000ULL

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;
	u32		       epoch_barrier;
	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;
};

static inline bool ceph_osdmap_flag(struct ceph_osd_client *osdc, int flag)
{
	return osdc->osdmap->flags & flag;
}

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);
void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb);

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);

int ceph_osdc_call(struct ceph_osd_client *osdc,
		   struct ceph_object_id *oid,
		   struct ceph_object_locator *oloc,
		   const char *class, const char *method,
		   unsigned int flags,
		   struct page *req_page, size_t req_len,
		   struct page *resp_page, size_t *resp_len);

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);
int ceph_osdc_list_watchers(struct ceph_osd_client *osdc,
			    struct ceph_object_id *oid,
			    struct ceph_object_locator *oloc,
			    struct ceph_watch_item **watchers,
			    u32 *num_watchers);
#endif
Commit	Line	Data
f24e9980 SW	1	#ifndef _FS_CEPH_OSD_CLIENT_H
	2	#define _FS_CEPH_OSD_CLIENT_H
	3
	4	#include <linux/completion.h>
415e49a9	5	#include <linux/kref.h>
f24e9980 SW	6	#include <linux/mempool.h>
f24e9980 SW	7	#include <linux/rbtree.h>
02113a0f	8	#include <linux/refcount.h>
f24e9980	9
6c4a1915 AE	10	#include <linux/ceph/types.h>
	11	#include <linux/ceph/osdmap.h>
	12	#include <linux/ceph/messenger.h>
b2aa5d0b	13	#include <linux/ceph/msgpool.h>
6c4a1915	14	#include <linux/ceph/auth.h>
c885837f	15	#include <linux/ceph/pagelist.h>
f24e9980 SW	16
	17	struct ceph_msg;
	18	struct ceph_snap_context;
	19	struct ceph_osd_request;
	20	struct ceph_osd_client;
	21
	22	/*
	23	* completion callback for async writepages
	24	*/
85e084fe	25	typedef void (ceph_osdc_callback_t)(struct ceph_osd_request );
f24e9980	26
63244fa1 ID	27	#define CEPH_HOMELESS_OSD -1
63244fa1 ID	28
f24e9980 SW	29	/* a given osd we're communicating with */
f24e9980 SW	30	struct ceph_osd {
02113a0f	31	refcount_t o_ref;
f24e9980 SW	32	struct ceph_osd_client *o_osdc;
	33	int o_osd;
	34	int o_incarnation;
	35	struct rb_node o_node;
	36	struct ceph_connection o_con;
5aea3dcd	37	struct rb_root o_requests;
922dab61	38	struct rb_root o_linger_requests;
f5a2041b	39	struct list_head o_osd_lru;
6c4a1915	40	struct ceph_auth_handshake o_auth;
f5a2041b	41	unsigned long lru_ttl;
422d2cb8	42	struct list_head o_keepalive_item;
5aea3dcd	43	struct mutex lock;
f24e9980 SW	44	};
f24e9980 SW	45
3f1af42a ID	46	#define CEPH_OSD_SLAB_OPS 2
3f1af42a ID	47	#define CEPH_OSD_MAX_OPS 16
1b83bef2	48
2ac2b7a6	49	enum ceph_osd_data_type {
ec9123c5	50	CEPH_OSD_DATA_TYPE_NONE = 0,
2ac2b7a6	51	CEPH_OSD_DATA_TYPE_PAGES,
9a5e6d09	52	CEPH_OSD_DATA_TYPE_PAGELIST,
2ac2b7a6 AE	53	#ifdef CONFIG_BLOCK
	54	CEPH_OSD_DATA_TYPE_BIO,
	55	#endif /* CONFIG_BLOCK */
	56	};
	57
2794a82a	58	struct ceph_osd_data {
2ac2b7a6 AE	59	enum ceph_osd_data_type type;
2ac2b7a6 AE	60	union {
2794a82a AE	61	struct {
2794a82a AE	62	struct page **pages;
e0c59487	63	u64 length;
2794a82a AE	64	u32 alignment;
	65	bool pages_from_pool;
	66	bool own_pages;
	67	};
9a5e6d09	68	struct ceph_pagelist *pagelist;
2794a82a	69	#ifdef CONFIG_BLOCK
fdce58cc AE	70	struct {
	71	struct bio bio; / list of bios */
	72	size_t bio_length; /* total in list */
	73	};
2794a82a AE	74	#endif /* CONFIG_BLOCK */
	75	};
	76	};
	77
79528734 AE	78	struct ceph_osd_req_op {
79528734 AE	79	u16 op; /* CEPH_OSD_OP_* */
7b25bf5f	80	u32 flags; /* CEPH_OSD_OP_FLAG_* */
de2aa102	81	u32 indata_len; /* request */
7665d85b YZ	82	u32 outdata_len; /* reply */
	83	s32 rval;
	84
79528734	85	union {
49719778	86	struct ceph_osd_data raw_data_in;
79528734 AE	87	struct {
	88	u64 offset, length;
	89	u64 truncate_size;
	90	u32 truncate_seq;
5476492f	91	struct ceph_osd_data osd_data;
79528734	92	} extent;
d74b50be	93	struct {
d7d5a007 ID	94	u32 name_len;
d7d5a007 ID	95	u32 value_len;
d74b50be YZ	96	__u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */
	97	__u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */
	98	struct ceph_osd_data osd_data;
	99	} xattr;
79528734 AE	100	struct {
	101	const char *class_name;
	102	const char *method_name;
5476492f	103	struct ceph_osd_data request_info;
04017e29	104	struct ceph_osd_data request_data;
5476492f	105	struct ceph_osd_data response_data;
79528734 AE	106	__u8 class_len;
79528734 AE	107	__u8 method_len;
bb873b53	108	u32 indata_len;
79528734 AE	109	} cls;
	110	struct {
	111	u64 cookie;
922dab61 ID	112	__u8 op; /* CEPH_OSD_WATCH_OP_ */
922dab61 ID	113	u32 gen;
79528734	114	} watch;
922dab61 ID	115	struct {
	116	struct ceph_osd_data request_data;
	117	} notify_ack;
19079203 ID	118	struct {
	119	u64 cookie;
	120	struct ceph_osd_data request_data;
	121	struct ceph_osd_data response_data;
	122	} notify;
a4ed38d7 DF	123	struct {
	124	struct ceph_osd_data response_data;
	125	} list_watchers;
c647b8a8 ID	126	struct {
	127	u64 expected_object_size;
	128	u64 expected_write_size;
	129	} alloc_hint;
79528734 AE	130	};
	131	};
	132
63244fa1 ID	133	struct ceph_osd_request_target {
	134	struct ceph_object_id base_oid;
	135	struct ceph_object_locator base_oloc;
	136	struct ceph_object_id target_oid;
	137	struct ceph_object_locator target_oloc;
	138
	139	struct ceph_pg pgid;
	140	u32 pg_num;
	141	u32 pg_num_mask;
	142	struct ceph_osds acting;
	143	struct ceph_osds up;
	144	int size;
	145	int min_size;
	146	bool sort_bitwise;
	147
	148	unsigned int flags; /* CEPH_OSD_FLAG_* */
	149	bool paused;
	150
dc93e0e2 ID	151	u32 last_force_resend;
dc93e0e2 ID	152
63244fa1 ID	153	int osd;
	154	};
	155
f24e9980 SW	156	/* an in-flight request */
	157	struct ceph_osd_request {
	158	u64 r_tid; /* unique for this client */
	159	struct rb_node r_node;
4609245e	160	struct rb_node r_mc_node; /* map check */
f24e9980	161	struct ceph_osd *r_osd;
a66dd383 ID	162
	163	struct ceph_osd_request_target r_t;
	164	#define r_base_oid r_t.base_oid
	165	#define r_base_oloc r_t.base_oloc
	166	#define r_flags r_t.flags
f24e9980 SW	167
f24e9980 SW	168	struct ceph_msg r_request, r_reply;
f24e9980	169	u32 r_sent; /* >0 if r_request is sending/sent */
1b83bef2	170
79528734 AE	171	/* request osd ops array */
79528734 AE	172	unsigned int r_num_ops;
79528734	173
1b83bef2	174	int r_result;
f24e9980 SW	175
f24e9980 SW	176	struct ceph_osd_client *r_osdc;
415e49a9	177	struct kref r_kref;
f24e9980	178	bool r_mempool;
b18b9550	179	struct completion r_completion; /* private to osd_client.c */
26be8808	180	ceph_osdc_callback_t r_callback;
f24e9980 SW	181	struct list_head r_unsafe_item;
	182
	183	struct inode r_inode; / for use by callbacks */
3d14c5d2	184	void r_priv; / ditto */
f24e9980	185
bb873b53 ID	186	/* set by submitter */
	187	u64 r_snapid; /* for reads, CEPH_NOSNAP o/w */
	188	struct ceph_snap_context r_snapc; / for writes */
	189	struct timespec r_mtime; /* ditto */
	190	u64 r_data_offset; /* ditto */
922dab61	191	bool r_linger; /* don't resend on failure */
a1f4020a	192	bool r_abort_on_full; /* return ENOSPC when full */
f24e9980	193
bb873b53 ID	194	/* internal */
bb873b53 ID	195	unsigned long r_stamp; /* jiffies, send or check time */
7cc5e38f	196	unsigned long r_start_stamp; /* jiffies */
bb873b53	197	int r_attempts;
4609245e	198	u32 r_map_dne_bound;
3f1af42a ID	199
3f1af42a ID	200	struct ceph_osd_req_op r_ops[];
f24e9980 SW	201	};
f24e9980 SW	202
205ee118 ID	203	struct ceph_request_redirect {
	204	struct ceph_object_locator oloc;
	205	};
	206
922dab61 ID	207	typedef void (rados_watchcb2_t)(void arg, u64 notify_id, u64 cookie,
	208	u64 notifier_id, void *data, size_t data_len);
	209	typedef void (rados_watcherrcb_t)(void arg, u64 cookie, int err);
	210
	211	struct ceph_osd_linger_request {
a40c4f10	212	struct ceph_osd_client *osdc;
922dab61 ID	213	u64 linger_id;
922dab61 ID	214	bool committed;
19079203	215	bool is_watch; /* watch or notify */
922dab61 ID	216
	217	struct ceph_osd *osd;
	218	struct ceph_osd_request *reg_req;
	219	struct ceph_osd_request *ping_req;
	220	unsigned long ping_sent;
b07d3c4b ID	221	unsigned long watch_valid_thru;
b07d3c4b ID	222	struct list_head pending_lworks;
922dab61 ID	223
922dab61 ID	224	struct ceph_osd_request_target t;
4609245e	225	u32 map_dne_bound;
922dab61 ID	226
	227	struct timespec mtime;
	228
a40c4f10	229	struct kref kref;
922dab61 ID	230	struct mutex lock;
	231	struct rb_node node; /* osd */
	232	struct rb_node osdc_node; /* osdc */
4609245e	233	struct rb_node mc_node; /* map check */
922dab61 ID	234	struct list_head scan_item;
	235
	236	struct completion reg_commit_wait;
19079203	237	struct completion notify_finish_wait;
922dab61	238	int reg_commit_error;
19079203	239	int notify_finish_error;
922dab61 ID	240	int last_error;
	241
	242	u32 register_gen;
19079203	243	u64 notify_id;
a40c4f10	244
922dab61 ID	245	rados_watchcb2_t wcb;
	246	rados_watcherrcb_t errcb;
	247	void *data;
19079203 ID	248
	249	struct page ***preply_pages;
	250	size_t *preply_len;
a40c4f10 YS	251	};
a40c4f10 YS	252
a4ed38d7 DF	253	struct ceph_watch_item {
	254	struct ceph_entity_name name;
	255	u64 cookie;
	256	struct ceph_entity_addr addr;
	257	};
	258
264048af ID	259	#define CEPH_LINGER_ID_START 0xffff000000000000ULL
264048af ID	260
f24e9980 SW	261	struct ceph_osd_client {
	262	struct ceph_client *client;
	263
	264	struct ceph_osdmap osdmap; / current map */
5aea3dcd	265	struct rw_semaphore lock;
f24e9980	266
f24e9980	267	struct rb_root osds; /* osds */
f5a2041b	268	struct list_head osd_lru; /* idle osds */
9dd2845c	269	spinlock_t osd_lru_lock;
58eb7932	270	u32 epoch_barrier;
5aea3dcd ID	271	struct ceph_osd homeless_osd;
5aea3dcd ID	272	atomic64_t last_tid; /* tid of last request */
922dab61 ID	273	u64 last_linger_id;
922dab61 ID	274	struct rb_root linger_requests; /* lingering requests */
4609245e ID	275	struct rb_root map_checks;
4609245e ID	276	struct rb_root linger_map_checks;
5aea3dcd ID	277	atomic_t num_requests;
5aea3dcd ID	278	atomic_t num_homeless;
f24e9980	279	struct delayed_work timeout_work;
f5a2041b	280	struct delayed_work osds_timeout_work;
039934b8	281	#ifdef CONFIG_DEBUG_FS
f24e9980	282	struct dentry *debugfs_file;
039934b8	283	#endif
f24e9980 SW	284
	285	mempool_t *req_mempool;
	286
0d59ab81	287	struct ceph_msgpool msgpool_op;
c16e7869	288	struct ceph_msgpool msgpool_op_reply;
a40c4f10	289
a40c4f10	290	struct workqueue_struct *notify_wq;
f24e9980 SW	291	};
f24e9980 SW	292
b7ec35b3 ID	293	static inline bool ceph_osdmap_flag(struct ceph_osd_client *osdc, int flag)
	294	{
	295	return osdc->osdmap->flags & flag;
	296	}
	297
5522ae0b AE	298	extern int ceph_osdc_setup(void);
	299	extern void ceph_osdc_cleanup(void);
	300
f24e9980 SW	301	extern int ceph_osdc_init(struct ceph_osd_client *osdc,
	302	struct ceph_client *client);
	303	extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
	304
	305	extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
	306	struct ceph_msg *msg);
	307	extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
	308	struct ceph_msg *msg);
58eb7932	309	void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb);
f24e9980	310
49719778	311	extern void osd_req_op_init(struct ceph_osd_request *osd_req,
144cba14	312	unsigned int which, u16 opcode, u32 flags);
49719778 AE	313
	314	extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *,
	315	unsigned int which,
	316	struct page **pages, u64 length,
	317	u32 alignment, bool pages_from_pool,
	318	bool own_pages);
	319
c99d2d4a AE	320	extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	321	unsigned int which, u16 opcode,
33803f33 AE	322	u64 offset, u64 length,
33803f33 AE	323	u64 truncate_size, u32 truncate_seq);
c99d2d4a AE	324	extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
c99d2d4a AE	325	unsigned int which, u64 length);
2c63f49a YZ	326	extern void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req,
2c63f49a YZ	327	unsigned int which, u64 offset_inc);
a4ce40a9 AE	328
	329	extern struct ceph_osd_data *osd_req_op_extent_osd_data(
	330	struct ceph_osd_request *osd_req,
406e2c9f	331	unsigned int which);
a4ce40a9 AE	332
a4ce40a9 AE	333	extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *,
406e2c9f	334	unsigned int which,
a4ce40a9 AE	335	struct page **pages, u64 length,
	336	u32 alignment, bool pages_from_pool,
	337	bool own_pages);
	338	extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *,
406e2c9f	339	unsigned int which,
a4ce40a9 AE	340	struct ceph_pagelist *pagelist);
	341	#ifdef CONFIG_BLOCK
	342	extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *,
406e2c9f	343	unsigned int which,
a4ce40a9 AE	344	struct bio *bio, size_t bio_length);
	345	#endif /* CONFIG_BLOCK */
	346
04017e29 AE	347	extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *,
	348	unsigned int which,
	349	struct ceph_pagelist *pagelist);
6c57b554 AE	350	extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *,
	351	unsigned int which,
	352	struct page **pages, u64 length,
	353	u32 alignment, bool pages_from_pool,
	354	bool own_pages);
a4ce40a9	355	extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
c99d2d4a	356	unsigned int which,
a4ce40a9 AE	357	struct page **pages, u64 length,
	358	u32 alignment, bool pages_from_pool,
	359	bool own_pages);
c99d2d4a AE	360	extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	361	unsigned int which, u16 opcode,
04017e29	362	const char class, const char method);
d74b50be YZ	363	extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
	364	u16 opcode, const char name, const void value,
	365	size_t size, u8 cmp_op, u8 cmp_mode);
c647b8a8 ID	366	extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
	367	unsigned int which,
	368	u64 expected_object_size,
	369	u64 expected_write_size);
33803f33	370
3499e8a5	371	extern struct ceph_osd_request ceph_osdc_alloc_request(struct ceph_osd_client osdc,
3499e8a5	372	struct ceph_snap_context *snapc,
acead002	373	unsigned int num_ops,
3499e8a5	374	bool use_mempool,
54a54007	375	gfp_t gfp_flags);
13d1ad16	376	int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp);
3499e8a5	377
f24e9980 SW	378	extern struct ceph_osd_request ceph_osdc_new_request(struct ceph_osd_client ,
	379	struct ceph_file_layout *layout,
	380	struct ceph_vino vino,
acead002	381	u64 offset, u64 *len,
715e4cd4 YZ	382	unsigned int which, int num_ops,
715e4cd4 YZ	383	int opcode, int flags,
f24e9980	384	struct ceph_snap_context *snapc,
acead002	385	u32 truncate_seq, u64 truncate_size,
153e5167	386	bool use_mempool);
f24e9980	387
9e94af20 ID	388	extern void ceph_osdc_get_request(struct ceph_osd_request *req);
9e94af20 ID	389	extern void ceph_osdc_put_request(struct ceph_osd_request *req);
f24e9980 SW	390
	391	extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
	392	struct ceph_osd_request *req,
	393	bool nofail);
c9f9b93d	394	extern void ceph_osdc_cancel_request(struct ceph_osd_request *req);
f24e9980 SW	395	extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
	396	struct ceph_osd_request *req);
	397	extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
	398
dd935f44	399	extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc);
7cca78c9	400	void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc);
dd935f44	401
428a7158 DF	402	int ceph_osdc_call(struct ceph_osd_client *osdc,
	403	struct ceph_object_id *oid,
	404	struct ceph_object_locator *oloc,
	405	const char class, const char method,
	406	unsigned int flags,
	407	struct page *req_page, size_t req_len,
	408	struct page resp_page, size_t resp_len);
	409
f24e9980 SW	410	extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
	411	struct ceph_vino vino,
	412	struct ceph_file_layout *layout,
	413	u64 off, u64 *plen,
	414	u32 truncate_seq, u64 truncate_size,
b7495fc2 SW	415	struct page **pages, int nr_pages,
b7495fc2 SW	416	int page_align);
f24e9980 SW	417
	418	extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
	419	struct ceph_vino vino,
	420	struct ceph_file_layout *layout,
	421	struct ceph_snap_context *sc,
	422	u64 off, u64 len,
	423	u32 truncate_seq, u64 truncate_size,
	424	struct timespec *mtime,
24808826	425	struct page **pages, int nr_pages);
f24e9980	426
922dab61 ID	427	/* watch/notify */
	428	struct ceph_osd_linger_request *
	429	ceph_osdc_watch(struct ceph_osd_client *osdc,
	430	struct ceph_object_id *oid,
	431	struct ceph_object_locator *oloc,
	432	rados_watchcb2_t wcb,
	433	rados_watcherrcb_t errcb,
	434	void *data);
	435	int ceph_osdc_unwatch(struct ceph_osd_client *osdc,
	436	struct ceph_osd_linger_request *lreq);
	437
	438	int ceph_osdc_notify_ack(struct ceph_osd_client *osdc,
	439	struct ceph_object_id *oid,
	440	struct ceph_object_locator *oloc,
	441	u64 notify_id,
	442	u64 cookie,
	443	void *payload,
	444	size_t payload_len);
19079203 ID	445	int ceph_osdc_notify(struct ceph_osd_client *osdc,
	446	struct ceph_object_id *oid,
	447	struct ceph_object_locator *oloc,
	448	void *payload,
	449	size_t payload_len,
	450	u32 timeout,
	451	struct page ***preply_pages,
	452	size_t *preply_len);
b07d3c4b ID	453	int ceph_osdc_watch_check(struct ceph_osd_client *osdc,
b07d3c4b ID	454	struct ceph_osd_linger_request *lreq);
a4ed38d7 DF	455	int ceph_osdc_list_watchers(struct ceph_osd_client *osdc,
	456	struct ceph_object_id *oid,
	457	struct ceph_object_locator *oloc,
	458	struct ceph_watch_item **watchers,
	459	u32 *num_watchers);
f24e9980 SW	460	#endif
f24e9980 SW	461