// SPDX-License-Identifier: GPL-2.0-only
-#include <linux/drbd_config.h>
+#include "drbd_config.h"
#include <linux/module.h>
const char *drbd_buildtag(void)
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * drbd_config.h
+ * DRBD's compile time configuration.
+ */
+
+#ifndef DRBD_CONFIG_H
+#define DRBD_CONFIG_H
+
+extern const char *drbd_buildtag(void);
+
+#define REL_VERSION "8.4.11"
+#define PRO_VERSION_MIN 86
+#define PRO_VERSION_MAX 101
+
+#endif
#include <linux/prefetch.h>
#include <linux/drbd_genl_api.h>
#include <linux/drbd.h>
-#include <linux/drbd_config.h>
+#include "drbd_config.h"
#include "drbd_strings.h"
#include "drbd_state.h"
#include "drbd_protocol.h"
+++ /dev/null
-/* 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
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * drbd_config.h
- * DRBD's compile time configuration.
- */
-
-#ifndef DRBD_CONFIG_H
-#define DRBD_CONFIG_H
-
-extern const char *drbd_buildtag(void);
-
-#define REL_VERSION "8.4.11"
-#define PRO_VERSION_MIN 86
-#define PRO_VERSION_MAX 101
-
-#endif
#ifndef DRBD_GENL_STRUCT_H
#define DRBD_GENL_STRUCT_H
-/**
- * struct drbd_genlmsghdr - DRBD specific header used in NETLINK_GENERIC requests
- * @minor:
- * For admin requests (user -> kernel): which minor device to operate on.
- * For (unicast) replies or informational (broadcast) messages
- * (kernel -> user): which minor device the information is about.
- * If we do not operate on minors, but on connections or resources,
- * the minor value shall be (~0), and the attribute DRBD_NLA_CFG_CONTEXT
- * is used instead.
- * @flags: possible operation modifiers (relevant only for user->kernel):
- * DRBD_GENL_F_SET_DEFAULTS
- * @volume:
- * When creating a new minor (adding it to a resource), the resource needs
- * to know which volume number within the resource this is supposed to be.
- * The volume number corresponds to the same volume number on the remote side,
- * whereas the minor number on the remote side may be different
- * (union with flags).
- * @ret_code: kernel->userland unicast cfg reply return code (union with flags);
- */
-struct drbd_genlmsghdr {
- __u32 minor;
- union {
- __u32 flags;
- __s32 ret_code;
- };
-};
-
-/* To be used in drbd_genlmsghdr.flags */
-enum {
- DRBD_GENL_F_SET_DEFAULTS = 1,
-};
-
-enum drbd_state_info_bcast_reason {
- SIB_GET_STATUS_REPLY = 1,
- SIB_STATE_CHANGE = 2,
- SIB_HELPER_PRE = 3,
- SIB_HELPER_POST = 4,
- SIB_SYNC_PROGRESS = 5,
-};
-
/* hack around predefined gcc/cpp "linux=1",
* we cannot possibly include <1/drbd_genl.h> */
#undef linux
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- drbd_limits.h
- This file is part of DRBD by Philipp Reisner and Lars Ellenberg.
-*/
-
-/*
- * Our current limitations.
- * Some of them are hard limits,
- * some of them are arbitrary range limits, that make it easier to provide
- * feedback about nonsense settings for certain configurable values.
- */
-
-#ifndef DRBD_LIMITS_H
-#define DRBD_LIMITS_H 1
-
-#define DEBUG_RANGE_CHECK 0
-
-#define DRBD_MINOR_COUNT_MIN 1U
-#define DRBD_MINOR_COUNT_MAX 255U
-#define DRBD_MINOR_COUNT_DEF 32U
-#define DRBD_MINOR_COUNT_SCALE '1'
-
-#define DRBD_VOLUME_MAX 65534U
-
-#define DRBD_DIALOG_REFRESH_MIN 0U
-#define DRBD_DIALOG_REFRESH_MAX 600U
-#define DRBD_DIALOG_REFRESH_SCALE '1'
-
-/* valid port number */
-#define DRBD_PORT_MIN 1U
-#define DRBD_PORT_MAX 0xffffU
-#define DRBD_PORT_SCALE '1'
-
-/* startup { */
- /* if you want more than 3.4 days, disable */
-#define DRBD_WFC_TIMEOUT_MIN 0U
-#define DRBD_WFC_TIMEOUT_MAX 300000U
-#define DRBD_WFC_TIMEOUT_DEF 0U
-#define DRBD_WFC_TIMEOUT_SCALE '1'
-
-#define DRBD_DEGR_WFC_TIMEOUT_MIN 0U
-#define DRBD_DEGR_WFC_TIMEOUT_MAX 300000U
-#define DRBD_DEGR_WFC_TIMEOUT_DEF 0U
-#define DRBD_DEGR_WFC_TIMEOUT_SCALE '1'
-
-#define DRBD_OUTDATED_WFC_TIMEOUT_MIN 0U
-#define DRBD_OUTDATED_WFC_TIMEOUT_MAX 300000U
-#define DRBD_OUTDATED_WFC_TIMEOUT_DEF 0U
-#define DRBD_OUTDATED_WFC_TIMEOUT_SCALE '1'
-/* }*/
-
-/* net { */
- /* timeout, unit centi seconds
- * more than one minute timeout is not useful */
-#define DRBD_TIMEOUT_MIN 1U
-#define DRBD_TIMEOUT_MAX 600U
-#define DRBD_TIMEOUT_DEF 60U /* 6 seconds */
-#define DRBD_TIMEOUT_SCALE '1'
-
- /* If backing disk takes longer than disk_timeout, mark the disk as failed */
-#define DRBD_DISK_TIMEOUT_MIN 0U /* 0 = disabled */
-#define DRBD_DISK_TIMEOUT_MAX 6000U /* 10 Minutes */
-#define DRBD_DISK_TIMEOUT_DEF 0U /* disabled */
-#define DRBD_DISK_TIMEOUT_SCALE '1'
-
- /* active connection retries when C_WF_CONNECTION */
-#define DRBD_CONNECT_INT_MIN 1U
-#define DRBD_CONNECT_INT_MAX 120U
-#define DRBD_CONNECT_INT_DEF 10U /* seconds */
-#define DRBD_CONNECT_INT_SCALE '1'
-
- /* keep-alive probes when idle */
-#define DRBD_PING_INT_MIN 1U
-#define DRBD_PING_INT_MAX 120U
-#define DRBD_PING_INT_DEF 10U
-#define DRBD_PING_INT_SCALE '1'
-
- /* timeout for the ping packets.*/
-#define DRBD_PING_TIMEO_MIN 1U
-#define DRBD_PING_TIMEO_MAX 300U
-#define DRBD_PING_TIMEO_DEF 5U
-#define DRBD_PING_TIMEO_SCALE '1'
-
- /* max number of write requests between write barriers */
-#define DRBD_MAX_EPOCH_SIZE_MIN 1U
-#define DRBD_MAX_EPOCH_SIZE_MAX 20000U
-#define DRBD_MAX_EPOCH_SIZE_DEF 2048U
-#define DRBD_MAX_EPOCH_SIZE_SCALE '1'
-
- /* I don't think that a tcp send buffer of more than 10M is useful */
-#define DRBD_SNDBUF_SIZE_MIN 0U
-#define DRBD_SNDBUF_SIZE_MAX (10U<<20)
-#define DRBD_SNDBUF_SIZE_DEF 0U
-#define DRBD_SNDBUF_SIZE_SCALE '1'
-
-#define DRBD_RCVBUF_SIZE_MIN 0U
-#define DRBD_RCVBUF_SIZE_MAX (10U<<20)
-#define DRBD_RCVBUF_SIZE_DEF 0U
-#define DRBD_RCVBUF_SIZE_SCALE '1'
-
- /* @4k PageSize -> 128kB - 512MB */
-#define DRBD_MAX_BUFFERS_MIN 32U
-#define DRBD_MAX_BUFFERS_MAX 131072U
-#define DRBD_MAX_BUFFERS_DEF 2048U
-#define DRBD_MAX_BUFFERS_SCALE '1'
-
- /* @4k PageSize -> 4kB - 512MB */
-#define DRBD_UNPLUG_WATERMARK_MIN 1U
-#define DRBD_UNPLUG_WATERMARK_MAX 131072U
-#define DRBD_UNPLUG_WATERMARK_DEF (DRBD_MAX_BUFFERS_DEF/16)
-#define DRBD_UNPLUG_WATERMARK_SCALE '1'
-
- /* 0 is disabled.
- * 200 should be more than enough even for very short timeouts */
-#define DRBD_KO_COUNT_MIN 0U
-#define DRBD_KO_COUNT_MAX 200U
-#define DRBD_KO_COUNT_DEF 7U
-#define DRBD_KO_COUNT_SCALE '1'
-/* } */
-
-/* syncer { */
- /* FIXME allow rate to be zero? */
-#define DRBD_RESYNC_RATE_MIN 1U
-/* channel bonding 10 GbE, or other hardware */
-#define DRBD_RESYNC_RATE_MAX (4 << 20)
-#define DRBD_RESYNC_RATE_DEF 250U
-#define DRBD_RESYNC_RATE_SCALE 'k' /* kilobytes */
-
-#define DRBD_AL_EXTENTS_MIN 67U
- /* we use u16 as "slot number", (u16)~0 is "FREE".
- * If you use >= 292 kB on-disk ring buffer,
- * this is the maximum you can use: */
-#define DRBD_AL_EXTENTS_MAX 0xfffeU
-#define DRBD_AL_EXTENTS_DEF 1237U
-#define DRBD_AL_EXTENTS_SCALE '1'
-
-#define DRBD_MINOR_NUMBER_MIN -1
-#define DRBD_MINOR_NUMBER_MAX ((1 << 20) - 1)
-#define DRBD_MINOR_NUMBER_DEF -1
-#define DRBD_MINOR_NUMBER_SCALE '1'
-
-/* } */
-
-/* drbdsetup XY resize -d Z
- * you are free to reduce the device size to nothing, if you want to.
- * the upper limit with 64bit kernel, enough ram and flexible meta data
- * is 1 PiB, currently. */
-/* DRBD_MAX_SECTORS */
-#define DRBD_DISK_SIZE_MIN 0LLU
-#define DRBD_DISK_SIZE_MAX (1LLU * (2LLU << 40))
-#define DRBD_DISK_SIZE_DEF 0LLU /* = disabled = no user size... */
-#define DRBD_DISK_SIZE_SCALE 's' /* sectors */
-
-#define DRBD_ON_IO_ERROR_DEF EP_DETACH
-#define DRBD_FENCING_DEF FP_DONT_CARE
-#define DRBD_AFTER_SB_0P_DEF ASB_DISCONNECT
-#define DRBD_AFTER_SB_1P_DEF ASB_DISCONNECT
-#define DRBD_AFTER_SB_2P_DEF ASB_DISCONNECT
-#define DRBD_RR_CONFLICT_DEF ASB_DISCONNECT
-#define DRBD_ON_NO_DATA_DEF OND_IO_ERROR
-#define DRBD_ON_CONGESTION_DEF OC_BLOCK
-#define DRBD_READ_BALANCING_DEF RB_PREFER_LOCAL
-
-#define DRBD_MAX_BIO_BVECS_MIN 0U
-#define DRBD_MAX_BIO_BVECS_MAX 128U
-#define DRBD_MAX_BIO_BVECS_DEF 0U
-#define DRBD_MAX_BIO_BVECS_SCALE '1'
-
-#define DRBD_C_PLAN_AHEAD_MIN 0U
-#define DRBD_C_PLAN_AHEAD_MAX 300U
-#define DRBD_C_PLAN_AHEAD_DEF 20U
-#define DRBD_C_PLAN_AHEAD_SCALE '1'
-
-#define DRBD_C_DELAY_TARGET_MIN 1U
-#define DRBD_C_DELAY_TARGET_MAX 100U
-#define DRBD_C_DELAY_TARGET_DEF 10U
-#define DRBD_C_DELAY_TARGET_SCALE '1'
-
-#define DRBD_C_FILL_TARGET_MIN 0U
-#define DRBD_C_FILL_TARGET_MAX (1U<<20) /* 500MByte in sec */
-#define DRBD_C_FILL_TARGET_DEF 100U /* Try to place 50KiB in socket send buffer during resync */
-#define DRBD_C_FILL_TARGET_SCALE 's' /* sectors */
-
-#define DRBD_C_MAX_RATE_MIN 250U
-#define DRBD_C_MAX_RATE_MAX (4U << 20)
-#define DRBD_C_MAX_RATE_DEF 102400U
-#define DRBD_C_MAX_RATE_SCALE 'k' /* kilobytes */
-
-#define DRBD_C_MIN_RATE_MIN 0U
-#define DRBD_C_MIN_RATE_MAX (4U << 20)
-#define DRBD_C_MIN_RATE_DEF 250U
-#define DRBD_C_MIN_RATE_SCALE 'k' /* kilobytes */
-
-#define DRBD_CONG_FILL_MIN 0U
-#define DRBD_CONG_FILL_MAX (10U<<21) /* 10GByte in sectors */
-#define DRBD_CONG_FILL_DEF 0U
-#define DRBD_CONG_FILL_SCALE 's' /* sectors */
-
-#define DRBD_CONG_EXTENTS_MIN DRBD_AL_EXTENTS_MIN
-#define DRBD_CONG_EXTENTS_MAX DRBD_AL_EXTENTS_MAX
-#define DRBD_CONG_EXTENTS_DEF DRBD_AL_EXTENTS_DEF
-#define DRBD_CONG_EXTENTS_SCALE DRBD_AL_EXTENTS_SCALE
-
-#define DRBD_PROTOCOL_DEF DRBD_PROT_C
-
-#define DRBD_DISK_BARRIER_DEF 0U
-#define DRBD_DISK_FLUSHES_DEF 1U
-#define DRBD_DISK_DRAIN_DEF 1U
-#define DRBD_MD_FLUSHES_DEF 1U
-#define DRBD_TCP_CORK_DEF 1U
-#define DRBD_AL_UPDATES_DEF 1U
-
-/* We used to ignore the discard_zeroes_data setting.
- * To not change established (and expected) behaviour,
- * by default assume that, for discard_zeroes_data=0,
- * we can make that an effective discard_zeroes_data=1,
- * if we only explicitly zero-out unaligned partial chunks. */
-#define DRBD_DISCARD_ZEROES_IF_ALIGNED_DEF 1U
-
-/* Some backends pretend to support WRITE SAME,
- * but fail such requests when they are actually submitted.
- * This is to tell DRBD to not even try. */
-#define DRBD_DISABLE_WRITE_SAME_DEF 0U
-
-#define DRBD_ALLOW_TWO_PRIMARIES_DEF 0U
-#define DRBD_ALWAYS_ASBP_DEF 0U
-#define DRBD_USE_RLE_DEF 1U
-#define DRBD_CSUMS_AFTER_CRASH_ONLY_DEF 0U
-
-#define DRBD_AL_STRIPES_MIN 1U
-#define DRBD_AL_STRIPES_MAX 1024U
-#define DRBD_AL_STRIPES_DEF 1U
-#define DRBD_AL_STRIPES_SCALE '1'
-
-#define DRBD_AL_STRIPE_SIZE_MIN 4U
-#define DRBD_AL_STRIPE_SIZE_MAX 16777216U
-#define DRBD_AL_STRIPE_SIZE_DEF 32U
-#define DRBD_AL_STRIPE_SIZE_SCALE 'k' /* kilobytes */
-
-#define DRBD_SOCKET_CHECK_TIMEO_MIN 0U
-#define DRBD_SOCKET_CHECK_TIMEO_MAX DRBD_PING_TIMEO_MAX
-#define DRBD_SOCKET_CHECK_TIMEO_DEF 0U
-#define DRBD_SOCKET_CHECK_TIMEO_SCALE '1'
-
-#define DRBD_RS_DISCARD_GRANULARITY_MIN 0U
-#define DRBD_RS_DISCARD_GRANULARITY_MAX (1U<<20) /* 1MiByte */
-#define DRBD_RS_DISCARD_GRANULARITY_DEF 0U /* disabled by default */
-#define DRBD_RS_DISCARD_GRANULARITY_SCALE '1' /* bytes */
-
-#endif
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-or-later WITH Linux-syscall-note */
+/*
+ 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
+
+/**
+ * struct drbd_genlmsghdr - DRBD specific header used in NETLINK_GENERIC requests
+ * @minor:
+ * For admin requests (user -> kernel): which minor device to operate on.
+ * For (unicast) replies or informational (broadcast) messages
+ * (kernel -> user): which minor device the information is about.
+ * If we do not operate on minors, but on connections or resources,
+ * the minor value shall be (~0), and the attribute DRBD_NLA_CFG_CONTEXT
+ * is used instead.
+ * @flags: possible operation modifiers (relevant only for user->kernel):
+ * DRBD_GENL_F_SET_DEFAULTS
+ * @volume:
+ * When creating a new minor (adding it to a resource), the resource needs
+ * to know which volume number within the resource this is supposed to be.
+ * The volume number corresponds to the same volume number on the remote side,
+ * whereas the minor number on the remote side may be different
+ * (union with flags).
+ * @ret_code: kernel->userland unicast cfg reply return code (union with flags);
+ */
+struct drbd_genlmsghdr {
+ __u32 minor;
+ union {
+ __u32 flags;
+ __s32 ret_code;
+ };
+};
+
+/* To be used in drbd_genlmsghdr.flags */
+enum {
+ DRBD_GENL_F_SET_DEFAULTS = 1,
+};
+
+enum drbd_state_info_bcast_reason {
+ SIB_GET_STATUS_REPLY = 1,
+ SIB_STATE_CHANGE = 2,
+ SIB_HELPER_PRE = 3,
+ SIB_HELPER_POST = 4,
+ SIB_SYNC_PROGRESS = 5,
+};
+
+#endif
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
+/*
+ drbd_limits.h
+ This file is part of DRBD by Philipp Reisner and Lars Ellenberg.
+*/
+
+/*
+ * Our current limitations.
+ * Some of them are hard limits,
+ * some of them are arbitrary range limits, that make it easier to provide
+ * feedback about nonsense settings for certain configurable values.
+ */
+
+#ifndef DRBD_LIMITS_H
+#define DRBD_LIMITS_H 1
+
+#define DEBUG_RANGE_CHECK 0
+
+#define DRBD_MINOR_COUNT_MIN 1U
+#define DRBD_MINOR_COUNT_MAX 255U
+#define DRBD_MINOR_COUNT_DEF 32U
+#define DRBD_MINOR_COUNT_SCALE '1'
+
+#define DRBD_VOLUME_MAX 65534U
+
+#define DRBD_DIALOG_REFRESH_MIN 0U
+#define DRBD_DIALOG_REFRESH_MAX 600U
+#define DRBD_DIALOG_REFRESH_SCALE '1'
+
+/* valid port number */
+#define DRBD_PORT_MIN 1U
+#define DRBD_PORT_MAX 0xffffU
+#define DRBD_PORT_SCALE '1'
+
+/* startup { */
+ /* if you want more than 3.4 days, disable */
+#define DRBD_WFC_TIMEOUT_MIN 0U
+#define DRBD_WFC_TIMEOUT_MAX 300000U
+#define DRBD_WFC_TIMEOUT_DEF 0U
+#define DRBD_WFC_TIMEOUT_SCALE '1'
+
+#define DRBD_DEGR_WFC_TIMEOUT_MIN 0U
+#define DRBD_DEGR_WFC_TIMEOUT_MAX 300000U
+#define DRBD_DEGR_WFC_TIMEOUT_DEF 0U
+#define DRBD_DEGR_WFC_TIMEOUT_SCALE '1'
+
+#define DRBD_OUTDATED_WFC_TIMEOUT_MIN 0U
+#define DRBD_OUTDATED_WFC_TIMEOUT_MAX 300000U
+#define DRBD_OUTDATED_WFC_TIMEOUT_DEF 0U
+#define DRBD_OUTDATED_WFC_TIMEOUT_SCALE '1'
+/* }*/
+
+/* net { */
+ /* timeout, unit centi seconds
+ * more than one minute timeout is not useful */
+#define DRBD_TIMEOUT_MIN 1U
+#define DRBD_TIMEOUT_MAX 600U
+#define DRBD_TIMEOUT_DEF 60U /* 6 seconds */
+#define DRBD_TIMEOUT_SCALE '1'
+
+ /* If backing disk takes longer than disk_timeout, mark the disk as failed */
+#define DRBD_DISK_TIMEOUT_MIN 0U /* 0 = disabled */
+#define DRBD_DISK_TIMEOUT_MAX 6000U /* 10 Minutes */
+#define DRBD_DISK_TIMEOUT_DEF 0U /* disabled */
+#define DRBD_DISK_TIMEOUT_SCALE '1'
+
+ /* active connection retries when C_WF_CONNECTION */
+#define DRBD_CONNECT_INT_MIN 1U
+#define DRBD_CONNECT_INT_MAX 120U
+#define DRBD_CONNECT_INT_DEF 10U /* seconds */
+#define DRBD_CONNECT_INT_SCALE '1'
+
+ /* keep-alive probes when idle */
+#define DRBD_PING_INT_MIN 1U
+#define DRBD_PING_INT_MAX 120U
+#define DRBD_PING_INT_DEF 10U
+#define DRBD_PING_INT_SCALE '1'
+
+ /* timeout for the ping packets.*/
+#define DRBD_PING_TIMEO_MIN 1U
+#define DRBD_PING_TIMEO_MAX 300U
+#define DRBD_PING_TIMEO_DEF 5U
+#define DRBD_PING_TIMEO_SCALE '1'
+
+ /* max number of write requests between write barriers */
+#define DRBD_MAX_EPOCH_SIZE_MIN 1U
+#define DRBD_MAX_EPOCH_SIZE_MAX 20000U
+#define DRBD_MAX_EPOCH_SIZE_DEF 2048U
+#define DRBD_MAX_EPOCH_SIZE_SCALE '1'
+
+ /* I don't think that a tcp send buffer of more than 10M is useful */
+#define DRBD_SNDBUF_SIZE_MIN 0U
+#define DRBD_SNDBUF_SIZE_MAX (10U<<20)
+#define DRBD_SNDBUF_SIZE_DEF 0U
+#define DRBD_SNDBUF_SIZE_SCALE '1'
+
+#define DRBD_RCVBUF_SIZE_MIN 0U
+#define DRBD_RCVBUF_SIZE_MAX (10U<<20)
+#define DRBD_RCVBUF_SIZE_DEF 0U
+#define DRBD_RCVBUF_SIZE_SCALE '1'
+
+ /* @4k PageSize -> 128kB - 512MB */
+#define DRBD_MAX_BUFFERS_MIN 32U
+#define DRBD_MAX_BUFFERS_MAX 131072U
+#define DRBD_MAX_BUFFERS_DEF 2048U
+#define DRBD_MAX_BUFFERS_SCALE '1'
+
+ /* @4k PageSize -> 4kB - 512MB */
+#define DRBD_UNPLUG_WATERMARK_MIN 1U
+#define DRBD_UNPLUG_WATERMARK_MAX 131072U
+#define DRBD_UNPLUG_WATERMARK_DEF (DRBD_MAX_BUFFERS_DEF/16)
+#define DRBD_UNPLUG_WATERMARK_SCALE '1'
+
+ /* 0 is disabled.
+ * 200 should be more than enough even for very short timeouts */
+#define DRBD_KO_COUNT_MIN 0U
+#define DRBD_KO_COUNT_MAX 200U
+#define DRBD_KO_COUNT_DEF 7U
+#define DRBD_KO_COUNT_SCALE '1'
+/* } */
+
+/* syncer { */
+ /* FIXME allow rate to be zero? */
+#define DRBD_RESYNC_RATE_MIN 1U
+/* channel bonding 10 GbE, or other hardware */
+#define DRBD_RESYNC_RATE_MAX (4 << 20)
+#define DRBD_RESYNC_RATE_DEF 250U
+#define DRBD_RESYNC_RATE_SCALE 'k' /* kilobytes */
+
+#define DRBD_AL_EXTENTS_MIN 67U
+ /* we use u16 as "slot number", (u16)~0 is "FREE".
+ * If you use >= 292 kB on-disk ring buffer,
+ * this is the maximum you can use: */
+#define DRBD_AL_EXTENTS_MAX 0xfffeU
+#define DRBD_AL_EXTENTS_DEF 1237U
+#define DRBD_AL_EXTENTS_SCALE '1'
+
+#define DRBD_MINOR_NUMBER_MIN -1
+#define DRBD_MINOR_NUMBER_MAX ((1 << 20) - 1)
+#define DRBD_MINOR_NUMBER_DEF -1
+#define DRBD_MINOR_NUMBER_SCALE '1'
+
+/* } */
+
+/* drbdsetup XY resize -d Z
+ * you are free to reduce the device size to nothing, if you want to.
+ * the upper limit with 64bit kernel, enough ram and flexible meta data
+ * is 1 PiB, currently. */
+/* DRBD_MAX_SECTORS */
+#define DRBD_DISK_SIZE_MIN 0LLU
+#define DRBD_DISK_SIZE_MAX (1LLU * (2LLU << 40))
+#define DRBD_DISK_SIZE_DEF 0LLU /* = disabled = no user size... */
+#define DRBD_DISK_SIZE_SCALE 's' /* sectors */
+
+#define DRBD_ON_IO_ERROR_DEF EP_DETACH
+#define DRBD_FENCING_DEF FP_DONT_CARE
+#define DRBD_AFTER_SB_0P_DEF ASB_DISCONNECT
+#define DRBD_AFTER_SB_1P_DEF ASB_DISCONNECT
+#define DRBD_AFTER_SB_2P_DEF ASB_DISCONNECT
+#define DRBD_RR_CONFLICT_DEF ASB_DISCONNECT
+#define DRBD_ON_NO_DATA_DEF OND_IO_ERROR
+#define DRBD_ON_CONGESTION_DEF OC_BLOCK
+#define DRBD_READ_BALANCING_DEF RB_PREFER_LOCAL
+
+#define DRBD_MAX_BIO_BVECS_MIN 0U
+#define DRBD_MAX_BIO_BVECS_MAX 128U
+#define DRBD_MAX_BIO_BVECS_DEF 0U
+#define DRBD_MAX_BIO_BVECS_SCALE '1'
+
+#define DRBD_C_PLAN_AHEAD_MIN 0U
+#define DRBD_C_PLAN_AHEAD_MAX 300U
+#define DRBD_C_PLAN_AHEAD_DEF 20U
+#define DRBD_C_PLAN_AHEAD_SCALE '1'
+
+#define DRBD_C_DELAY_TARGET_MIN 1U
+#define DRBD_C_DELAY_TARGET_MAX 100U
+#define DRBD_C_DELAY_TARGET_DEF 10U
+#define DRBD_C_DELAY_TARGET_SCALE '1'
+
+#define DRBD_C_FILL_TARGET_MIN 0U
+#define DRBD_C_FILL_TARGET_MAX (1U<<20) /* 500MByte in sec */
+#define DRBD_C_FILL_TARGET_DEF 100U /* Try to place 50KiB in socket send buffer during resync */
+#define DRBD_C_FILL_TARGET_SCALE 's' /* sectors */
+
+#define DRBD_C_MAX_RATE_MIN 250U
+#define DRBD_C_MAX_RATE_MAX (4U << 20)
+#define DRBD_C_MAX_RATE_DEF 102400U
+#define DRBD_C_MAX_RATE_SCALE 'k' /* kilobytes */
+
+#define DRBD_C_MIN_RATE_MIN 0U
+#define DRBD_C_MIN_RATE_MAX (4U << 20)
+#define DRBD_C_MIN_RATE_DEF 250U
+#define DRBD_C_MIN_RATE_SCALE 'k' /* kilobytes */
+
+#define DRBD_CONG_FILL_MIN 0U
+#define DRBD_CONG_FILL_MAX (10U<<21) /* 10GByte in sectors */
+#define DRBD_CONG_FILL_DEF 0U
+#define DRBD_CONG_FILL_SCALE 's' /* sectors */
+
+#define DRBD_CONG_EXTENTS_MIN DRBD_AL_EXTENTS_MIN
+#define DRBD_CONG_EXTENTS_MAX DRBD_AL_EXTENTS_MAX
+#define DRBD_CONG_EXTENTS_DEF DRBD_AL_EXTENTS_DEF
+#define DRBD_CONG_EXTENTS_SCALE DRBD_AL_EXTENTS_SCALE
+
+#define DRBD_PROTOCOL_DEF DRBD_PROT_C
+
+#define DRBD_DISK_BARRIER_DEF 0U
+#define DRBD_DISK_FLUSHES_DEF 1U
+#define DRBD_DISK_DRAIN_DEF 1U
+#define DRBD_MD_FLUSHES_DEF 1U
+#define DRBD_TCP_CORK_DEF 1U
+#define DRBD_AL_UPDATES_DEF 1U
+
+/* We used to ignore the discard_zeroes_data setting.
+ * To not change established (and expected) behaviour,
+ * by default assume that, for discard_zeroes_data=0,
+ * we can make that an effective discard_zeroes_data=1,
+ * if we only explicitly zero-out unaligned partial chunks. */
+#define DRBD_DISCARD_ZEROES_IF_ALIGNED_DEF 1U
+
+/* Some backends pretend to support WRITE SAME,
+ * but fail such requests when they are actually submitted.
+ * This is to tell DRBD to not even try. */
+#define DRBD_DISABLE_WRITE_SAME_DEF 0U
+
+#define DRBD_ALLOW_TWO_PRIMARIES_DEF 0U
+#define DRBD_ALWAYS_ASBP_DEF 0U
+#define DRBD_USE_RLE_DEF 1U
+#define DRBD_CSUMS_AFTER_CRASH_ONLY_DEF 0U
+
+#define DRBD_AL_STRIPES_MIN 1U
+#define DRBD_AL_STRIPES_MAX 1024U
+#define DRBD_AL_STRIPES_DEF 1U
+#define DRBD_AL_STRIPES_SCALE '1'
+
+#define DRBD_AL_STRIPE_SIZE_MIN 4U
+#define DRBD_AL_STRIPE_SIZE_MAX 16777216U
+#define DRBD_AL_STRIPE_SIZE_DEF 32U
+#define DRBD_AL_STRIPE_SIZE_SCALE 'k' /* kilobytes */
+
+#define DRBD_SOCKET_CHECK_TIMEO_MIN 0U
+#define DRBD_SOCKET_CHECK_TIMEO_MAX DRBD_PING_TIMEO_MAX
+#define DRBD_SOCKET_CHECK_TIMEO_DEF 0U
+#define DRBD_SOCKET_CHECK_TIMEO_SCALE '1'
+
+#define DRBD_RS_DISCARD_GRANULARITY_MIN 0U
+#define DRBD_RS_DISCARD_GRANULARITY_MAX (1U<<20) /* 1MiByte */
+#define DRBD_RS_DISCARD_GRANULARITY_DEF 0U /* disabled by default */
+#define DRBD_RS_DISCARD_GRANULARITY_SCALE '1' /* bytes */
+
+#endif
projects / linux-2.6-microblaze.git / commitdiff