[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/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 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;

	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;

	struct ceph_osd_request_target t;
	u32 last_force_resend;

	struct timespec mtime;

	struct kref kref;
	struct mutex lock;
	struct rb_node node;            /* osd */
	struct rb_node osdc_node;       /* osdc */
	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 */
	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);

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);
#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>
	7	#include <linux/rbtree.h>
	8
6c4a1915 AE	9	#include <linux/ceph/types.h>
	10	#include <linux/ceph/osdmap.h>
	11	#include <linux/ceph/messenger.h>
	12	#include <linux/ceph/auth.h>
c885837f	13	#include <linux/ceph/pagelist.h>
f24e9980 SW	14
	15	struct ceph_msg;
	16	struct ceph_snap_context;
	17	struct ceph_osd_request;
	18	struct ceph_osd_client;
	19
	20	/*
	21	* completion callback for async writepages
	22	*/
85e084fe	23	typedef void (ceph_osdc_callback_t)(struct ceph_osd_request );
26be8808	24	typedef void (ceph_osdc_unsafe_callback_t)(struct ceph_osd_request , bool);
f24e9980	25
63244fa1 ID	26	#define CEPH_HOMELESS_OSD -1
63244fa1 ID	27
f24e9980 SW	28	/* a given osd we're communicating with */
	29	struct ceph_osd {
	30	atomic_t o_ref;
	31	struct ceph_osd_client *o_osdc;
	32	int o_osd;
	33	int o_incarnation;
	34	struct rb_node o_node;
	35	struct ceph_connection o_con;
5aea3dcd	36	struct rb_root o_requests;
922dab61	37	struct rb_root o_linger_requests;
f5a2041b	38	struct list_head o_osd_lru;
6c4a1915	39	struct ceph_auth_handshake o_auth;
f5a2041b	40	unsigned long lru_ttl;
422d2cb8	41	struct list_head o_keepalive_item;
5aea3dcd	42	struct mutex lock;
f24e9980 SW	43	};
f24e9980 SW	44
3f1af42a ID	45	#define CEPH_OSD_SLAB_OPS 2
3f1af42a ID	46	#define CEPH_OSD_MAX_OPS 16
1b83bef2	47
2ac2b7a6	48	enum ceph_osd_data_type {
ec9123c5	49	CEPH_OSD_DATA_TYPE_NONE = 0,
2ac2b7a6	50	CEPH_OSD_DATA_TYPE_PAGES,
9a5e6d09	51	CEPH_OSD_DATA_TYPE_PAGELIST,
2ac2b7a6 AE	52	#ifdef CONFIG_BLOCK
	53	CEPH_OSD_DATA_TYPE_BIO,
	54	#endif /* CONFIG_BLOCK */
	55	};
	56
2794a82a	57	struct ceph_osd_data {
2ac2b7a6 AE	58	enum ceph_osd_data_type type;
2ac2b7a6 AE	59	union {
2794a82a AE	60	struct {
2794a82a AE	61	struct page **pages;
e0c59487	62	u64 length;
2794a82a AE	63	u32 alignment;
	64	bool pages_from_pool;
	65	bool own_pages;
	66	};
9a5e6d09	67	struct ceph_pagelist *pagelist;
2794a82a	68	#ifdef CONFIG_BLOCK
fdce58cc AE	69	struct {
	70	struct bio bio; / list of bios */
	71	size_t bio_length; /* total in list */
	72	};
2794a82a AE	73	#endif /* CONFIG_BLOCK */
	74	};
	75	};
	76
79528734 AE	77	struct ceph_osd_req_op {
79528734 AE	78	u16 op; /* CEPH_OSD_OP_* */
7b25bf5f	79	u32 flags; /* CEPH_OSD_OP_FLAG_* */
de2aa102	80	u32 indata_len; /* request */
7665d85b YZ	81	u32 outdata_len; /* reply */
	82	s32 rval;
	83
79528734	84	union {
49719778	85	struct ceph_osd_data raw_data_in;
79528734 AE	86	struct {
	87	u64 offset, length;
	88	u64 truncate_size;
	89	u32 truncate_seq;
5476492f	90	struct ceph_osd_data osd_data;
79528734	91	} extent;
d74b50be	92	struct {
d7d5a007 ID	93	u32 name_len;
d7d5a007 ID	94	u32 value_len;
d74b50be YZ	95	__u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */
	96	__u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */
	97	struct ceph_osd_data osd_data;
	98	} xattr;
79528734 AE	99	struct {
	100	const char *class_name;
	101	const char *method_name;
5476492f	102	struct ceph_osd_data request_info;
04017e29	103	struct ceph_osd_data request_data;
5476492f	104	struct ceph_osd_data response_data;
79528734 AE	105	__u8 class_len;
79528734 AE	106	__u8 method_len;
bb873b53	107	u32 indata_len;
79528734 AE	108	} cls;
	109	struct {
	110	u64 cookie;
922dab61 ID	111	__u8 op; /* CEPH_OSD_WATCH_OP_ */
922dab61 ID	112	u32 gen;
79528734	113	} watch;
922dab61 ID	114	struct {
	115	struct ceph_osd_data request_data;
	116	} notify_ack;
19079203 ID	117	struct {
	118	u64 cookie;
	119	struct ceph_osd_data request_data;
	120	struct ceph_osd_data response_data;
	121	} notify;
c647b8a8 ID	122	struct {
	123	u64 expected_object_size;
	124	u64 expected_write_size;
	125	} alloc_hint;
79528734 AE	126	};
	127	};
	128
63244fa1 ID	129	struct ceph_osd_request_target {
	130	struct ceph_object_id base_oid;
	131	struct ceph_object_locator base_oloc;
	132	struct ceph_object_id target_oid;
	133	struct ceph_object_locator target_oloc;
	134
	135	struct ceph_pg pgid;
	136	u32 pg_num;
	137	u32 pg_num_mask;
	138	struct ceph_osds acting;
	139	struct ceph_osds up;
	140	int size;
	141	int min_size;
	142	bool sort_bitwise;
	143
	144	unsigned int flags; /* CEPH_OSD_FLAG_* */
	145	bool paused;
	146
	147	int osd;
	148	};
	149
f24e9980 SW	150	/* an in-flight request */
	151	struct ceph_osd_request {
	152	u64 r_tid; /* unique for this client */
	153	struct rb_node r_node;
f24e9980	154	struct ceph_osd *r_osd;
a66dd383 ID	155
	156	struct ceph_osd_request_target r_t;
	157	#define r_base_oid r_t.base_oid
	158	#define r_base_oloc r_t.base_oloc
	159	#define r_flags r_t.flags
f24e9980 SW	160
f24e9980 SW	161	struct ceph_msg r_request, r_reply;
f24e9980	162	u32 r_sent; /* >0 if r_request is sending/sent */
1b83bef2	163
79528734 AE	164	/* request osd ops array */
79528734 AE	165	unsigned int r_num_ops;
79528734	166
1b83bef2	167	int r_result;
fe5da05e	168	bool r_got_reply;
f24e9980 SW	169
f24e9980 SW	170	struct ceph_osd_client *r_osdc;
415e49a9	171	struct kref r_kref;
f24e9980	172	bool r_mempool;
fe5da05e ID	173	struct completion r_completion;
fe5da05e ID	174	struct completion r_safe_completion; /* fsync waiter */
26be8808 AE	175	ceph_osdc_callback_t r_callback;
26be8808 AE	176	ceph_osdc_unsafe_callback_t r_unsafe_callback;
f24e9980 SW	177	struct list_head r_unsafe_item;
	178
	179	struct inode r_inode; / for use by callbacks */
3d14c5d2	180	void r_priv; / ditto */
f24e9980	181
bb873b53 ID	182	/* set by submitter */
	183	u64 r_snapid; /* for reads, CEPH_NOSNAP o/w */
	184	struct ceph_snap_context r_snapc; / for writes */
	185	struct timespec r_mtime; /* ditto */
	186	u64 r_data_offset; /* ditto */
922dab61	187	bool r_linger; /* don't resend on failure */
f24e9980	188
bb873b53 ID	189	/* internal */
	190	unsigned long r_stamp; /* jiffies, send or check time */
	191	int r_attempts;
	192	struct ceph_eversion r_replay_version; /* aka reassert_version */
	193	u32 r_last_force_resend;
3f1af42a ID	194
3f1af42a ID	195	struct ceph_osd_req_op r_ops[];
f24e9980 SW	196	};
f24e9980 SW	197
205ee118 ID	198	struct ceph_request_redirect {
	199	struct ceph_object_locator oloc;
	200	};
	201
922dab61 ID	202	typedef void (rados_watchcb2_t)(void arg, u64 notify_id, u64 cookie,
	203	u64 notifier_id, void *data, size_t data_len);
	204	typedef void (rados_watcherrcb_t)(void arg, u64 cookie, int err);
	205
	206	struct ceph_osd_linger_request {
a40c4f10	207	struct ceph_osd_client *osdc;
922dab61 ID	208	u64 linger_id;
922dab61 ID	209	bool committed;
19079203	210	bool is_watch; /* watch or notify */
922dab61 ID	211
	212	struct ceph_osd *osd;
	213	struct ceph_osd_request *reg_req;
	214	struct ceph_osd_request *ping_req;
	215	unsigned long ping_sent;
	216
	217	struct ceph_osd_request_target t;
	218	u32 last_force_resend;
	219
	220	struct timespec mtime;
	221
a40c4f10	222	struct kref kref;
922dab61 ID	223	struct mutex lock;
	224	struct rb_node node; /* osd */
	225	struct rb_node osdc_node; /* osdc */
	226	struct list_head scan_item;
	227
	228	struct completion reg_commit_wait;
19079203	229	struct completion notify_finish_wait;
922dab61	230	int reg_commit_error;
19079203	231	int notify_finish_error;
922dab61 ID	232	int last_error;
	233
	234	u32 register_gen;
19079203	235	u64 notify_id;
a40c4f10	236
922dab61 ID	237	rados_watchcb2_t wcb;
	238	rados_watcherrcb_t errcb;
	239	void *data;
19079203 ID	240
	241	struct page ***preply_pages;
	242	size_t *preply_len;
a40c4f10 YS	243	};
a40c4f10 YS	244
f24e9980 SW	245	struct ceph_osd_client {
	246	struct ceph_client *client;
	247
	248	struct ceph_osdmap osdmap; / current map */
5aea3dcd	249	struct rw_semaphore lock;
f24e9980	250
f24e9980	251	struct rb_root osds; /* osds */
f5a2041b	252	struct list_head osd_lru; /* idle osds */
9dd2845c	253	spinlock_t osd_lru_lock;
5aea3dcd ID	254	struct ceph_osd homeless_osd;
5aea3dcd ID	255	atomic64_t last_tid; /* tid of last request */
922dab61 ID	256	u64 last_linger_id;
922dab61 ID	257	struct rb_root linger_requests; /* lingering requests */
5aea3dcd ID	258	atomic_t num_requests;
5aea3dcd ID	259	atomic_t num_homeless;
f24e9980	260	struct delayed_work timeout_work;
f5a2041b	261	struct delayed_work osds_timeout_work;
039934b8	262	#ifdef CONFIG_DEBUG_FS
f24e9980	263	struct dentry *debugfs_file;
039934b8	264	#endif
f24e9980 SW	265
	266	mempool_t *req_mempool;
	267
0d59ab81	268	struct ceph_msgpool msgpool_op;
c16e7869	269	struct ceph_msgpool msgpool_op_reply;
a40c4f10	270
a40c4f10	271	struct workqueue_struct *notify_wq;
f24e9980 SW	272	};
f24e9980 SW	273
5522ae0b AE	274	extern int ceph_osdc_setup(void);
	275	extern void ceph_osdc_cleanup(void);
	276
f24e9980 SW	277	extern int ceph_osdc_init(struct ceph_osd_client *osdc,
	278	struct ceph_client *client);
	279	extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
	280
	281	extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
	282	struct ceph_msg *msg);
	283	extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
	284	struct ceph_msg *msg);
	285
49719778	286	extern void osd_req_op_init(struct ceph_osd_request *osd_req,
144cba14	287	unsigned int which, u16 opcode, u32 flags);
49719778 AE	288
	289	extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *,
	290	unsigned int which,
	291	struct page **pages, u64 length,
	292	u32 alignment, bool pages_from_pool,
	293	bool own_pages);
	294
c99d2d4a AE	295	extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	296	unsigned int which, u16 opcode,
33803f33 AE	297	u64 offset, u64 length,
33803f33 AE	298	u64 truncate_size, u32 truncate_seq);
c99d2d4a AE	299	extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
c99d2d4a AE	300	unsigned int which, u64 length);
2c63f49a YZ	301	extern void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req,
2c63f49a YZ	302	unsigned int which, u64 offset_inc);
a4ce40a9 AE	303
	304	extern struct ceph_osd_data *osd_req_op_extent_osd_data(
	305	struct ceph_osd_request *osd_req,
406e2c9f	306	unsigned int which);
a4ce40a9 AE	307
a4ce40a9 AE	308	extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *,
406e2c9f	309	unsigned int which,
a4ce40a9 AE	310	struct page **pages, u64 length,
	311	u32 alignment, bool pages_from_pool,
	312	bool own_pages);
	313	extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *,
406e2c9f	314	unsigned int which,
a4ce40a9 AE	315	struct ceph_pagelist *pagelist);
	316	#ifdef CONFIG_BLOCK
	317	extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *,
406e2c9f	318	unsigned int which,
a4ce40a9 AE	319	struct bio *bio, size_t bio_length);
	320	#endif /* CONFIG_BLOCK */
	321
04017e29 AE	322	extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *,
	323	unsigned int which,
	324	struct ceph_pagelist *pagelist);
6c57b554 AE	325	extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *,
	326	unsigned int which,
	327	struct page **pages, u64 length,
	328	u32 alignment, bool pages_from_pool,
	329	bool own_pages);
a4ce40a9	330	extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
c99d2d4a	331	unsigned int which,
a4ce40a9 AE	332	struct page **pages, u64 length,
	333	u32 alignment, bool pages_from_pool,
	334	bool own_pages);
	335
c99d2d4a AE	336	extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	337	unsigned int which, u16 opcode,
04017e29	338	const char class, const char method);
d74b50be YZ	339	extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
	340	u16 opcode, const char name, const void value,
	341	size_t size, u8 cmp_op, u8 cmp_mode);
c647b8a8 ID	342	extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
	343	unsigned int which,
	344	u64 expected_object_size,
	345	u64 expected_write_size);
33803f33	346
3499e8a5	347	extern struct ceph_osd_request ceph_osdc_alloc_request(struct ceph_osd_client osdc,
3499e8a5	348	struct ceph_snap_context *snapc,
acead002	349	unsigned int num_ops,
3499e8a5	350	bool use_mempool,
54a54007	351	gfp_t gfp_flags);
13d1ad16	352	int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp);
3499e8a5	353
f24e9980 SW	354	extern struct ceph_osd_request ceph_osdc_new_request(struct ceph_osd_client ,
	355	struct ceph_file_layout *layout,
	356	struct ceph_vino vino,
acead002	357	u64 offset, u64 *len,
715e4cd4 YZ	358	unsigned int which, int num_ops,
715e4cd4 YZ	359	int opcode, int flags,
f24e9980	360	struct ceph_snap_context *snapc,
acead002	361	u32 truncate_seq, u64 truncate_size,
153e5167	362	bool use_mempool);
f24e9980	363
9e94af20 ID	364	extern void ceph_osdc_get_request(struct ceph_osd_request *req);
9e94af20 ID	365	extern void ceph_osdc_put_request(struct ceph_osd_request *req);
f24e9980 SW	366
	367	extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
	368	struct ceph_osd_request *req,
	369	bool nofail);
c9f9b93d	370	extern void ceph_osdc_cancel_request(struct ceph_osd_request *req);
f24e9980 SW	371	extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
	372	struct ceph_osd_request *req);
	373	extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
	374
dd935f44 JD	375	extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc);
dd935f44 JD	376
f24e9980 SW	377	extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
	378	struct ceph_vino vino,
	379	struct ceph_file_layout *layout,
	380	u64 off, u64 *plen,
	381	u32 truncate_seq, u64 truncate_size,
b7495fc2 SW	382	struct page **pages, int nr_pages,
b7495fc2 SW	383	int page_align);
f24e9980 SW	384
	385	extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
	386	struct ceph_vino vino,
	387	struct ceph_file_layout *layout,
	388	struct ceph_snap_context *sc,
	389	u64 off, u64 len,
	390	u32 truncate_seq, u64 truncate_size,
	391	struct timespec *mtime,
24808826	392	struct page **pages, int nr_pages);
f24e9980	393
922dab61 ID	394	/* watch/notify */
	395	struct ceph_osd_linger_request *
	396	ceph_osdc_watch(struct ceph_osd_client *osdc,
	397	struct ceph_object_id *oid,
	398	struct ceph_object_locator *oloc,
	399	rados_watchcb2_t wcb,
	400	rados_watcherrcb_t errcb,
	401	void *data);
	402	int ceph_osdc_unwatch(struct ceph_osd_client *osdc,
	403	struct ceph_osd_linger_request *lreq);
	404
	405	int ceph_osdc_notify_ack(struct ceph_osd_client *osdc,
	406	struct ceph_object_id *oid,
	407	struct ceph_object_locator *oloc,
	408	u64 notify_id,
	409	u64 cookie,
	410	void *payload,
	411	size_t payload_len);
19079203 ID	412	int ceph_osdc_notify(struct ceph_osd_client *osdc,
	413	struct ceph_object_id *oid,
	414	struct ceph_object_locator *oloc,
	415	void *payload,
	416	size_t payload_len,
	417	u32 timeout,
	418	struct page ***preply_pages,
	419	size_t *preply_len);
f24e9980 SW	420	#endif
f24e9980 SW	421