291 lines
8.5 KiB
C
291 lines
8.5 KiB
C
#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 "types.h"
|
|
#include "osdmap.h"
|
|
#include "messenger.h"
|
|
|
|
struct ceph_msg;
|
|
struct ceph_snap_context;
|
|
struct ceph_osd_request;
|
|
struct ceph_osd_client;
|
|
struct ceph_authorizer;
|
|
struct ceph_pagelist;
|
|
|
|
/*
|
|
* completion callback for async writepages
|
|
*/
|
|
typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *,
|
|
struct ceph_msg *);
|
|
|
|
/* 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 list_head o_requests;
|
|
struct list_head o_linger_requests;
|
|
struct list_head o_osd_lru;
|
|
struct ceph_authorizer *o_authorizer;
|
|
void *o_authorizer_buf, *o_authorizer_reply_buf;
|
|
size_t o_authorizer_buf_len, o_authorizer_reply_buf_len;
|
|
unsigned long lru_ttl;
|
|
int o_marked_for_keepalive;
|
|
struct list_head o_keepalive_item;
|
|
};
|
|
|
|
/* an in-flight request */
|
|
struct ceph_osd_request {
|
|
u64 r_tid; /* unique for this client */
|
|
struct rb_node r_node;
|
|
struct list_head r_req_lru_item;
|
|
struct list_head r_osd_item;
|
|
struct list_head r_linger_item;
|
|
struct list_head r_linger_osd;
|
|
struct ceph_osd *r_osd;
|
|
struct ceph_pg r_pgid;
|
|
int r_pg_osds[CEPH_PG_MAX_SIZE];
|
|
int r_num_pg_osds;
|
|
|
|
struct ceph_connection *r_con_filling_msg;
|
|
|
|
struct ceph_msg *r_request, *r_reply;
|
|
int r_result;
|
|
int r_flags; /* any additional flags for the osd */
|
|
u32 r_sent; /* >0 if r_request is sending/sent */
|
|
int r_got_reply;
|
|
int r_linger;
|
|
|
|
struct ceph_osd_client *r_osdc;
|
|
struct kref r_kref;
|
|
bool r_mempool;
|
|
struct completion r_completion, r_safe_completion;
|
|
ceph_osdc_callback_t r_callback, r_safe_callback;
|
|
struct ceph_eversion r_reassert_version;
|
|
struct list_head r_unsafe_item;
|
|
|
|
struct inode *r_inode; /* for use by callbacks */
|
|
void *r_priv; /* ditto */
|
|
|
|
char r_oid[40]; /* object name */
|
|
int r_oid_len;
|
|
unsigned long r_stamp; /* send OR check time */
|
|
|
|
struct ceph_file_layout r_file_layout;
|
|
struct ceph_snap_context *r_snapc; /* snap context for writes */
|
|
unsigned r_num_pages; /* size of page array (follows) */
|
|
unsigned r_page_alignment; /* io offset in first page */
|
|
struct page **r_pages; /* pages for data payload */
|
|
int r_pages_from_pool;
|
|
int r_own_pages; /* if true, i own page list */
|
|
#ifdef CONFIG_BLOCK
|
|
struct bio *r_bio; /* instead of pages */
|
|
#endif
|
|
|
|
struct ceph_pagelist *r_trail; /* trailing part of the data */
|
|
};
|
|
|
|
struct ceph_osd_event {
|
|
u64 cookie;
|
|
int one_shot;
|
|
struct ceph_osd_client *osdc;
|
|
void (*cb)(u64, u64, u8, void *);
|
|
void *data;
|
|
struct rb_node node;
|
|
struct list_head osd_node;
|
|
struct kref kref;
|
|
struct completion completion;
|
|
};
|
|
|
|
struct ceph_osd_event_work {
|
|
struct work_struct work;
|
|
struct ceph_osd_event *event;
|
|
u64 ver;
|
|
u64 notify_id;
|
|
u8 opcode;
|
|
};
|
|
|
|
struct ceph_osd_client {
|
|
struct ceph_client *client;
|
|
|
|
struct ceph_osdmap *osdmap; /* current map */
|
|
struct rw_semaphore map_sem;
|
|
struct completion map_waiters;
|
|
u64 last_requested_map;
|
|
|
|
struct mutex request_mutex;
|
|
struct rb_root osds; /* osds */
|
|
struct list_head osd_lru; /* idle osds */
|
|
u64 timeout_tid; /* tid of timeout triggering rq */
|
|
u64 last_tid; /* tid of last request */
|
|
struct rb_root requests; /* pending requests */
|
|
struct list_head req_lru; /* in-flight lru */
|
|
struct list_head req_unsent; /* unsent/need-resend queue */
|
|
struct list_head req_notarget; /* map to no osd */
|
|
struct list_head req_linger; /* lingering requests */
|
|
int num_requests;
|
|
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;
|
|
|
|
spinlock_t event_lock;
|
|
struct rb_root event_tree;
|
|
u64 event_count;
|
|
|
|
struct workqueue_struct *notify_wq;
|
|
};
|
|
|
|
struct ceph_osd_req_op {
|
|
u16 op; /* CEPH_OSD_OP_* */
|
|
u32 flags; /* CEPH_OSD_FLAG_* */
|
|
union {
|
|
struct {
|
|
u64 offset, length;
|
|
u64 truncate_size;
|
|
u32 truncate_seq;
|
|
} extent;
|
|
struct {
|
|
const char *name;
|
|
u32 name_len;
|
|
const char *val;
|
|
u32 value_len;
|
|
__u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */
|
|
__u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */
|
|
} xattr;
|
|
struct {
|
|
const char *class_name;
|
|
__u8 class_len;
|
|
const char *method_name;
|
|
__u8 method_len;
|
|
__u8 argc;
|
|
const char *indata;
|
|
u32 indata_len;
|
|
} cls;
|
|
struct {
|
|
u64 cookie, count;
|
|
} pgls;
|
|
struct {
|
|
u64 snapid;
|
|
} snap;
|
|
struct {
|
|
u64 cookie;
|
|
u64 ver;
|
|
__u8 flag;
|
|
u32 prot_ver;
|
|
u32 timeout;
|
|
} watch;
|
|
};
|
|
u32 payload_len;
|
|
};
|
|
|
|
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 ceph_calc_raw_layout(struct ceph_osd_client *osdc,
|
|
struct ceph_file_layout *layout,
|
|
u64 snapid,
|
|
u64 off, u64 *plen, u64 *bno,
|
|
struct ceph_osd_request *req,
|
|
struct ceph_osd_req_op *op);
|
|
|
|
extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
|
|
int flags,
|
|
struct ceph_snap_context *snapc,
|
|
struct ceph_osd_req_op *ops,
|
|
bool use_mempool,
|
|
gfp_t gfp_flags,
|
|
struct page **pages,
|
|
struct bio *bio);
|
|
|
|
extern void ceph_osdc_build_request(struct ceph_osd_request *req,
|
|
u64 off, u64 *plen,
|
|
struct ceph_osd_req_op *src_ops,
|
|
struct ceph_snap_context *snapc,
|
|
struct timespec *mtime,
|
|
const char *oid,
|
|
int oid_len);
|
|
|
|
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, int op, int flags,
|
|
struct ceph_snap_context *snapc,
|
|
int do_sync, u32 truncate_seq,
|
|
u64 truncate_size,
|
|
struct timespec *mtime,
|
|
bool use_mempool, int num_reply,
|
|
int page_align);
|
|
|
|
extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
|
|
struct ceph_osd_request *req);
|
|
extern void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
|
|
struct ceph_osd_request *req);
|
|
|
|
static inline void ceph_osdc_get_request(struct ceph_osd_request *req)
|
|
{
|
|
kref_get(&req->r_kref);
|
|
}
|
|
extern void ceph_osdc_release_request(struct kref *kref);
|
|
static inline void ceph_osdc_put_request(struct ceph_osd_request *req)
|
|
{
|
|
kref_put(&req->r_kref, ceph_osdc_release_request);
|
|
}
|
|
|
|
extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
|
|
struct ceph_osd_request *req,
|
|
bool nofail);
|
|
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 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,
|
|
int flags, int do_sync, bool nofail);
|
|
|
|
/* watch/notify events */
|
|
extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,
|
|
void (*event_cb)(u64, u64, u8, void *),
|
|
int one_shot, void *data,
|
|
struct ceph_osd_event **pevent);
|
|
extern void ceph_osdc_cancel_event(struct ceph_osd_event *event);
|
|
extern int ceph_osdc_wait_event(struct ceph_osd_event *event,
|
|
unsigned long timeout);
|
|
extern void ceph_osdc_put_event(struct ceph_osd_event *event);
|
|
#endif
|
|
|