drbd: move UAPI headers to include/uapi/linux/

drbd.h and drbd_limits.h contain only type definitions, enums, and
constants shared between kernel and userspace. These should be part of
UAPI.

Split the genl_api header into two: the genlmsghdr and the enums are
UAPI, the rest stays there for now (it will be removed by one of the
next commits in this series).

drbd_config.h is clearly DRBD-internal, so move it there.

Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20260506124541.1951772-2-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 392 deletions

diff --git a/include/linux/drbd.h b/include/linux/drbd.h
deleted file mode 100644
index 5468a2399d48..000000000000
--- a/include/linux/drbd.h
+++ /dev/null
@@ -1,392 +0,0 @@
-/* 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 <philipp.reisner@linbit.com>.
-  Copyright (C) 2001-2008, Lars Ellenberg <lars.ellenberg@linbit.com>.
-
-
-*/
-#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 {
-	EP_PASS_ON, /* FIXME should the better be named "Ignore"? */
-	EP_CALL_HELPER,
-	EP_DETACH
-};
-
-enum drbd_fencing_p {
-	FP_NOT_AVAIL = -1, /* Not a policy */
-	FP_DONT_CARE = 0,
-	FP_RESOURCE,
-	FP_STONITH
-};
-
-enum drbd_disconnect_p {
-	DP_RECONNECT,
-	DP_DROP_NET_CONF,
-	DP_FREEZE_IO
-};
-
-enum drbd_after_sb_p {
-	ASB_DISCONNECT,
-	ASB_DISCARD_YOUNGER_PRI,
-	ASB_DISCARD_OLDER_PRI,
-	ASB_DISCARD_ZERO_CHG,
-	ASB_DISCARD_LEAST_CHG,
-	ASB_DISCARD_LOCAL,
-	ASB_DISCARD_REMOTE,
-	ASB_CONSENSUS,
-	ASB_DISCARD_SECONDARY,
-	ASB_CALL_HELPER,
-	ASB_VIOLENTLY
-};
-
-enum drbd_on_no_data {
-	OND_IO_ERROR,
-	OND_SUSPEND_IO
-};
-
-enum drbd_on_congestion {
-	OC_BLOCK,
-	OC_PULL_AHEAD,
-	OC_DISCONNECT,
-};
-
-enum drbd_read_balancing {
-	RB_PREFER_LOCAL,
-	RB_PREFER_REMOTE,
-	RB_ROUND_ROBIN,
-	RB_LEAST_PENDING,
-	RB_CONGESTED_REMOTE,
-	RB_32K_STRIPING,
-	RB_64K_STRIPING,
-	RB_128K_STRIPING,
-	RB_256K_STRIPING,
-	RB_512K_STRIPING,
-	RB_1M_STRIPING,
-};
-
-/* KEEP the order, do not delete or insert. Only append. */
-enum drbd_ret_code {
-	ERR_CODE_BASE		= 100,
-	NO_ERROR		= 101,
-	ERR_LOCAL_ADDR		= 102,
-	ERR_PEER_ADDR		= 103,
-	ERR_OPEN_DISK		= 104,
-	ERR_OPEN_MD_DISK	= 105,
-	ERR_DISK_NOT_BDEV	= 107,
-	ERR_MD_NOT_BDEV		= 108,
-	ERR_DISK_TOO_SMALL	= 111,
-	ERR_MD_DISK_TOO_SMALL	= 112,
-	ERR_BDCLAIM_DISK	= 114,
-	ERR_BDCLAIM_MD_DISK	= 115,
-	ERR_MD_IDX_INVALID	= 116,
-	ERR_IO_MD_DISK		= 118,
-	ERR_MD_INVALID          = 119,
-	ERR_AUTH_ALG		= 120,
-	ERR_AUTH_ALG_ND		= 121,
-	ERR_NOMEM		= 122,
-	ERR_DISCARD_IMPOSSIBLE	= 123,
-	ERR_DISK_CONFIGURED	= 124,
-	ERR_NET_CONFIGURED	= 125,
-	ERR_MANDATORY_TAG	= 126,
-	ERR_MINOR_INVALID	= 127,
-	ERR_INTR		= 129, /* EINTR */
-	ERR_RESIZE_RESYNC	= 130,
-	ERR_NO_PRIMARY		= 131,
-	ERR_RESYNC_AFTER	= 132,
-	ERR_RESYNC_AFTER_CYCLE	= 133,
-	ERR_PAUSE_IS_SET	= 134,
-	ERR_PAUSE_IS_CLEAR	= 135,
-	ERR_PACKET_NR		= 137,
-	ERR_NO_DISK		= 138,
-	ERR_NOT_PROTO_C		= 139,
-	ERR_NOMEM_BITMAP	= 140,
-	ERR_INTEGRITY_ALG	= 141, /* DRBD 8.2 only */
-	ERR_INTEGRITY_ALG_ND	= 142, /* DRBD 8.2 only */
-	ERR_CPU_MASK_PARSE	= 143, /* DRBD 8.2 only */
-	ERR_CSUMS_ALG		= 144, /* DRBD 8.2 only */
-	ERR_CSUMS_ALG_ND	= 145, /* DRBD 8.2 only */
-	ERR_VERIFY_ALG		= 146, /* DRBD 8.2 only */
-	ERR_VERIFY_ALG_ND	= 147, /* DRBD 8.2 only */
-	ERR_CSUMS_RESYNC_RUNNING= 148, /* DRBD 8.2 only */
-	ERR_VERIFY_RUNNING	= 149, /* DRBD 8.2 only */
-	ERR_DATA_NOT_CURRENT	= 150,
-	ERR_CONNECTED		= 151, /* DRBD 8.3 only */
-	ERR_PERM		= 152,
-	ERR_NEED_APV_93		= 153,
-	ERR_STONITH_AND_PROT_A  = 154,
-	ERR_CONG_NOT_PROTO_A	= 155,
-	ERR_PIC_AFTER_DEP	= 156,
-	ERR_PIC_PEER_DEP	= 157,
-	ERR_RES_NOT_KNOWN	= 158,
-	ERR_RES_IN_USE		= 159,
-	ERR_MINOR_CONFIGURED    = 160,
-	ERR_MINOR_OR_VOLUME_EXISTS = 161,
-	ERR_INVALID_REQUEST	= 162,
-	ERR_NEED_APV_100	= 163,
-	ERR_NEED_ALLOW_TWO_PRI  = 164,
-	ERR_MD_UNCLEAN          = 165,
-	ERR_MD_LAYOUT_CONNECTED = 166,
-	ERR_MD_LAYOUT_TOO_BIG   = 167,
-	ERR_MD_LAYOUT_TOO_SMALL = 168,
-	ERR_MD_LAYOUT_NO_FIT    = 169,
-	ERR_IMPLICIT_SHRINK     = 170,
-	/* insert new ones above this line */
-	AFTER_LAST_ERR_CODE
-};
-
-#define DRBD_PROT_A   1
-#define DRBD_PROT_B   2
-#define DRBD_PROT_C   3
-
-enum drbd_role {
-	R_UNKNOWN = 0,
-	R_PRIMARY = 1,     /* role */
-	R_SECONDARY = 2,   /* role */
-	R_MASK = 3,
-};
-
-/* 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 {
-	C_STANDALONE,
-	C_DISCONNECTING,  /* Temporal state on the way to StandAlone. */
-	C_UNCONNECTED,    /* >= C_UNCONNECTED -> inc_net() succeeds */
-
-	/* These temporal states are all used on the way
-	 * from >= C_CONNECTED to Unconnected.
-	 * The 'disconnect reason' states
-	 * I do not allow to change between them. */
-	C_TIMEOUT,
-	C_BROKEN_PIPE,
-	C_NETWORK_FAILURE,
-	C_PROTOCOL_ERROR,
-	C_TEAR_DOWN,
-
-	C_WF_CONNECTION,
-	C_WF_REPORT_PARAMS, /* we have a socket */
-	C_CONNECTED,      /* we have introduced each other */
-	C_STARTING_SYNC_S,  /* starting full sync by admin request. */
-	C_STARTING_SYNC_T,  /* starting full sync by admin request. */
-	C_WF_BITMAP_S,
-	C_WF_BITMAP_T,
-	C_WF_SYNC_UUID,
-
-	/* All SyncStates are tested with this comparison
-	 * xx >= C_SYNC_SOURCE && xx <= C_PAUSED_SYNC_T */
-	C_SYNC_SOURCE,
-	C_SYNC_TARGET,
-	C_VERIFY_S,
-	C_VERIFY_T,
-	C_PAUSED_SYNC_S,
-	C_PAUSED_SYNC_T,
-
-	C_AHEAD,
-	C_BEHIND,
-
-	C_MASK = 31
-};
-
-enum drbd_disk_state {
-	D_DISKLESS,
-	D_ATTACHING,      /* In the process of reading the meta-data */
-	D_FAILED,         /* Becomes D_DISKLESS as soon as we told it the peer */
-			  /* when >= D_FAILED it is legal to access mdev->ldev */
-	D_NEGOTIATING,    /* Late attaching state, we need to talk to the peer */
-	D_INCONSISTENT,
-	D_OUTDATED,
-	D_UNKNOWN,       /* Only used for the peer, never for myself */
-	D_CONSISTENT,     /* Might be D_OUTDATED, might be D_UP_TO_DATE ... */
-	D_UP_TO_DATE,       /* Only this disk state allows applications' IO ! */
-	D_MASK = 15
-};
-
-union drbd_state {
-/* According to gcc's docs is the ...
- * The order of allocation of bit-fields within a unit (C90 6.5.2.1, C99 6.7.2.1).
- * Determined by ABI.
- * pointed out by Maxim Uvarov q<muvarov@ru.mvista.com>
- * even though we transmit as "cpu_to_be32(state)",
- * the offsets of the bitfields still need to be swapped
- * on different endianness.
- */
-	struct {
-#if defined(__LITTLE_ENDIAN_BITFIELD)
-		unsigned role:2 ;   /* 3/4	 primary/secondary/unknown */
-		unsigned peer:2 ;   /* 3/4	 primary/secondary/unknown */
-		unsigned conn:5 ;   /* 17/32	 cstates */
-		unsigned disk:4 ;   /* 8/16	 from D_DISKLESS to D_UP_TO_DATE */
-		unsigned pdsk:4 ;   /* 8/16	 from D_DISKLESS to D_UP_TO_DATE */
-		unsigned susp:1 ;   /* 2/2	 IO suspended no/yes (by user) */
-		unsigned aftr_isp:1 ; /* isp .. imposed sync pause */
-		unsigned peer_isp:1 ;
-		unsigned user_isp:1 ;
-		unsigned susp_nod:1 ; /* IO suspended because no data */
-		unsigned susp_fen:1 ; /* IO suspended because fence peer handler runs*/
-		unsigned _pad:9;   /* 0	 unused */
-#elif defined(__BIG_ENDIAN_BITFIELD)
-		unsigned _pad:9;
-		unsigned susp_fen:1 ;
-		unsigned susp_nod:1 ;
-		unsigned user_isp:1 ;
-		unsigned peer_isp:1 ;
-		unsigned aftr_isp:1 ; /* isp .. imposed sync pause */
-		unsigned susp:1 ;   /* 2/2	 IO suspended  no/yes */
-		unsigned pdsk:4 ;   /* 8/16	 from D_DISKLESS to D_UP_TO_DATE */
-		unsigned disk:4 ;   /* 8/16	 from D_DISKLESS to D_UP_TO_DATE */
-		unsigned conn:5 ;   /* 17/32	 cstates */
-		unsigned peer:2 ;   /* 3/4	 primary/secondary/unknown */
-		unsigned role:2 ;   /* 3/4	 primary/secondary/unknown */
-#else
-# error "this endianness is not supported"
-#endif
-	};
-	unsigned int i;
-};
-
-enum drbd_state_rv {
-	SS_CW_NO_NEED = 4,
-	SS_CW_SUCCESS = 3,
-	SS_NOTHING_TO_DO = 2,
-	SS_SUCCESS = 1,
-	SS_UNKNOWN_ERROR = 0, /* Used to sleep longer in _drbd_request_state */
-	SS_TWO_PRIMARIES = -1,
-	SS_NO_UP_TO_DATE_DISK = -2,
-	SS_NO_LOCAL_DISK = -4,
-	SS_NO_REMOTE_DISK = -5,
-	SS_CONNECTED_OUTDATES = -6,
-	SS_PRIMARY_NOP = -7,
-	SS_RESYNC_RUNNING = -8,
-	SS_ALREADY_STANDALONE = -9,
-	SS_CW_FAILED_BY_PEER = -10,
-	SS_IS_DISKLESS = -11,
-	SS_DEVICE_IN_USE = -12,
-	SS_NO_NET_CONFIG = -13,
-	SS_NO_VERIFY_ALG = -14,       /* drbd-8.2 only */
-	SS_NEED_CONNECTION = -15,    /* drbd-8.2 only */
-	SS_LOWER_THAN_OUTDATED = -16,
-	SS_NOT_SUPPORTED = -17,      /* drbd-8.2 only */
-	SS_IN_TRANSIENT_STATE = -18,  /* Retry after the next state change */
-	SS_CONCURRENT_ST_CHG = -19,   /* Concurrent cluster side state change! */
-	SS_O_VOL_PEER_PRI = -20,
-	SS_OUTDATE_WO_CONN = -21,
-	SS_AFTER_LAST_ERROR = -22,    /* Keep this at bottom */
-};
-
-#define SHARED_SECRET_MAX 64
-
-#define MDF_CONSISTENT		(1 << 0)
-#define MDF_PRIMARY_IND		(1 << 1)
-#define MDF_CONNECTED_IND	(1 << 2)
-#define MDF_FULL_SYNC		(1 << 3)
-#define MDF_WAS_UP_TO_DATE	(1 << 4)
-#define MDF_PEER_OUT_DATED	(1 << 5)
-#define MDF_CRASHED_PRIMARY	(1 << 6)
-#define MDF_AL_CLEAN		(1 << 7)
-#define MDF_AL_DISABLED		(1 << 8)
-
-#define MAX_PEERS 32
-
-enum drbd_uuid_index {
-	UI_CURRENT,
-	UI_BITMAP,
-	UI_HISTORY_START,
-	UI_HISTORY_END,
-	UI_SIZE,      /* nl-packet: number of dirty bits */
-	UI_FLAGS,     /* nl-packet: flags */
-	UI_EXTENDED_SIZE   /* Everything. */
-};
-
-#define HISTORY_UUIDS MAX_PEERS
-
-enum drbd_timeout_flag {
-	UT_DEFAULT      = 0,
-	UT_DEGRADED     = 1,
-	UT_PEER_OUTDATED = 2,
-};
-
-enum drbd_notification_type {
-	NOTIFY_EXISTS,
-	NOTIFY_CREATE,
-	NOTIFY_CHANGE,
-	NOTIFY_DESTROY,
-	NOTIFY_CALL,
-	NOTIFY_RESPONSE,
-
-	NOTIFY_CONTINUES = 0x8000,
-	NOTIFY_FLAGS = NOTIFY_CONTINUES,
-};
-
-enum drbd_peer_state {
-	P_INCONSISTENT = 3,
-	P_OUTDATED = 4,
-	P_DOWN = 5,
-	P_PRIMARY = 6,
-	P_FENCING = 7,
-};
-
-#define UUID_JUST_CREATED ((__u64)4)
-
-enum write_ordering_e {
-	WO_NONE,
-	WO_DRAIN_IO,
-	WO_BDEV_FLUSH,
-	WO_BIO_BARRIER
-};
-
-/* magic numbers used in meta data and network packets */
-#define DRBD_MAGIC 0x83740267
-#define DRBD_MAGIC_BIG 0x835a
-#define DRBD_MAGIC_100 0x8620ec20
-
-#define DRBD_MD_MAGIC_07   (DRBD_MAGIC+3)
-#define DRBD_MD_MAGIC_08   (DRBD_MAGIC+4)
-#define DRBD_MD_MAGIC_84_UNCLEAN	(DRBD_MAGIC+5)
-
-
-/* how I came up with this magic?
- * base64 decode "actlog==" ;) */
-#define DRBD_AL_MAGIC 0x69cb65a2
-
-/* these are of type "int" */
-#define DRBD_MD_INDEX_INTERNAL -1
-#define DRBD_MD_INDEX_FLEX_EXT -2
-#define DRBD_MD_INDEX_FLEX_INT -3
-
-#define DRBD_CPU_MASK_SIZE 32
-
-#endif