linux/include/linux/drbd.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
  drbd.h
  Kernel module for 2.6.x Kernels

  This file is part of DRBD by Philipp Reisner and Lars Ellenberg.

  Copyright (C) 2001-2008, LINBIT Information Technologies GmbH.
  Copyright (C) 2001-2008, Philipp Reisner <[email protected]>.
  Copyright (C) 2001-2008, Lars Ellenberg <[email protected]>.


*/
#ifndef DRBD_H
#define DRBD_H
#include <asm/types.h>

#ifdef __KERNEL__
#include <linux/types.h>
#include <asm/byteorder.h>
#else
#include <sys/types.h>
#include <sys/wait.h>
#include <limits.h>

/* Although the Linux source code makes a difference between
   generic endianness and the bitfields' endianness, there is no
   architecture as of Linux-2.6.24-rc4 where the bitfields' endianness
   does not match the generic endianness. */

#if __BYTE_ORDER == __LITTLE_ENDIAN
#define __LITTLE_ENDIAN_BITFIELD
#elif __BYTE_ORDER == __BIG_ENDIAN
#define __BIG_ENDIAN_BITFIELD
#else
# error "sorry, weird endianness on this box"
#endif

#endif

enum drbd_io_error_p { … };

enum drbd_fencing_p { … };

enum drbd_disconnect_p { … };

enum drbd_after_sb_p { … };

enum drbd_on_no_data { … };

enum drbd_on_congestion { … };

enum drbd_read_balancing { … };

/* KEEP the order, do not delete or insert. Only append. */
enum drbd_ret_code { … };

#define DRBD_PROT_A …
#define DRBD_PROT_B …
#define DRBD_PROT_C …

enum drbd_role { … };

/* The order of these constants is important.
 * The lower ones (<C_WF_REPORT_PARAMS) indicate
 * that there is no socket!
 * >=C_WF_REPORT_PARAMS ==> There is a socket
 */
enum drbd_conns { … };

enum drbd_disk_state { … };

drbd_state;

enum drbd_state_rv { … };

#define SHARED_SECRET_MAX …

#define MDF_CONSISTENT …
#define MDF_PRIMARY_IND …
#define MDF_CONNECTED_IND …
#define MDF_FULL_SYNC …
#define MDF_WAS_UP_TO_DATE …
#define MDF_PEER_OUT_DATED …
#define MDF_CRASHED_PRIMARY …
#define MDF_AL_CLEAN …
#define MDF_AL_DISABLED …

#define MAX_PEERS …

enum drbd_uuid_index { … };

#define HISTORY_UUIDS …

enum drbd_timeout_flag { … };

enum drbd_notification_type { … };

enum drbd_peer_state { … };

#define UUID_JUST_CREATED …

enum write_ordering_e { … };

/* magic numbers used in meta data and network packets */
#define DRBD_MAGIC …
#define DRBD_MAGIC_BIG …
#define DRBD_MAGIC_100 …

#define DRBD_MD_MAGIC_07 …
#define DRBD_MD_MAGIC_08 …
#define DRBD_MD_MAGIC_84_UNCLEAN …


/* how I came up with this magic?
 * base64 decode "actlog==" ;) */
#define DRBD_AL_MAGIC …

/* these are of type "int" */
#define DRBD_MD_INDEX_INTERNAL …
#define DRBD_MD_INDEX_FLEX_EXT …
#define DRBD_MD_INDEX_FLEX_INT …

#define DRBD_CPU_MASK_SIZE …

#endif