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  +   €l–Ь4э( ©і( 	ЕЂfаB¦-яї„d_†I|ҐЏ+ДГ )"    /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_CEPH_LIBCEPH_H
#define _FS_CEPH_LIBCEPH_H

#include <linux/ceph/ceph_debug.h>

#include <asm/unaligned.h>
#include <linux/backing-dev.h>
#include <linux/completion.h>
#include <linux/exportfs.h>
#include <linux/bug.h>
#include <linux/fs.h>
#include <linux/mempool.h>
#include <linux/pagemap.h>
#include <linux/wait.h>
#include <linux/writeback.h>
#include <linux/slab.h>
#include <linux/refcount.h>

#include <linux/ceph/types.h>
#include <linux/ceph/messenger.h>
#include <linux/ceph/msgpool.h>
#include <linux/ceph/mon_client.h>
#include <linux/ceph/osd_client.h>
#include <linux/ceph/ceph_fs.h>
#include <linux/ceph/string_table.h>

/*
 * mount options
 */
#define CEPH_OPT_FSID             (1<<0)
#define CEPH_OPT_NOSHARE          (1<<1) /* don't share client with other sbs */
#define CEPH_OPT_MYIP             (1<<2) /* specified my ip */
#define CEPH_OPT_NOCRC            (1<<3) /* no data crc on writes (msgr1) */
#define CEPH_OPT_TCP_NODELAY      (1<<4) /* TCP_NODELAY on TCP sockets */
#define CEPH_OPT_NOMSGSIGN        (1<<5) /* don't sign msgs (msgr1) */
#define CEPH_OPT_ABORT_ON_FULL    (1<<6) /* abort w/ ENOSPC when full */
#define CEPH_OPT_RXBOUNCE         (1<<7) /* double-buffer read data */

#define CEPH_OPT_DEFAULT   (CEPH_OPT_TCP_NODELAY)

#define ceph_set_opt(client, opt) \
	(client)->options->flags |= CEPH_OPT_##opt;
#define ceph_test_opt(client, opt) \
	(!!((client)->options->flags & CEPH_OPT_##opt))

struct ceph_options {
	int flags;
	struct ceph_fsid fsid;
	struct ceph_entity_addr my_addr;
	unsigned long mount_timeout;		/* jiffies */
	unsigned long osd_idle_ttl;		/* jiffies */
	unsigned long osd_keepalive_timeout;	/* jiffies */
	unsigned long osd_request_timeout;	/* jiffies */
	u32 read_from_replica;  /* CEPH_OSD_FLAG_BALANCE/LOCALIZE_READS */
	int con_modes[2];  /* CEPH_CON_MODE_* */

	/*
	 * any type that can't be simply compared or doesn't need
	 * to be compared should go beyond this point,
	 * ceph_compare_options() should be updated accordingly
	 */

	struct ceph_entity_addr *mon_addr; /* should be the first
					      pointer type of args */
	int num_mon;
	char *name;
	struct ceph_crypto_key *key;
	struct rb_root crush_locs;
};

/*
 * defaults
 */
#define CEPH_MOUNT_TIMEOUT_DEFAULT	msecs_to_jiffies(60 * 1000)
#define CEPH_OSD_KEEPALIVE_DEFAULT	msecs_to_jiffies(5 * 1000)
#define CEPH_OSD_IDLE_TTL_DEFAULT	msecs_to_jiffies(60 * 1000)
#define CEPH_OSD_REQUEST_TIMEOUT_DEFAULT 0  /* no timeout */
#define CEPH_READ_FROM_REPLICA_DEFAULT	0  /* read from primary */

#define CEPH_MONC_HUNT_INTERVAL		msecs_to_jiffies(3 * 1000)
#define CEPH_MONC_PING_INTERVAL		msecs_to_jiffies(10 * 1000)
#define CEPH_MONC_PING_TIMEOUT		msecs_to_jiffies(30 * 1000)
#define CEPH_MONC_HUNT_BACKOFF		2
#define CEPH_MONC_HUNT_MAX_MULT		10

#define CEPH_MSG_MAX_CONTROL_LEN (16*1024*1024)
#define CEPH_MSG_MAX_FRONT_LEN	(16*1024*1024)
#define CEPH_MSG_MAX_MIDDLE_LEN	(16*1024*1024)

/*
 * The largest possible rbd data object is 32M.
 * The largest possible rbd object map object is 64M.
 *
 * There is no limit on the size of cephfs objects, but it has to obey
 * rsize and wsize mount options anyway.
 */
#define CEPH_MSG_MAX_DATA_LEN	(64*1024*1024)

#define CEPH_AUTH_NAME_DEFAULT   "guest"

static inline unsigned long ceph_timeout_jiffies(unsigned long timeout)
{
	return timeout ?: MAX_SCHEDULE_TIMEOUT;
}

struct ceph_mds_client;

/*
 * per client state
 *
 * possibly shared by multiple mount points, if they are
 * mounting the same ceph filesystem/cluster.
 */
struct ceph_client {
	struct ceph_fsid fsid;
	bool have_fsid;

	void *private;

	struct ceph_options *options;

	struct mutex mount_mutex;      /* serialize mount attempts */
	wait_queue_head_t auth_wq;
	int auth_err;

	int (*extra_mon_dispatch)(struct ceph_client *, struct ceph_msg *);

	u64 supported_features;
	u64 required_features;

	struct ceph_messenger msgr;   /* messenger instance */
	struct ceph_mon_client monc;
	struct ceph_osd_client osdc;

#ifdef CONFIG_DEBUG_FS
	stru