drbd: Define scale factors in a single place

#define DRBD_MINOR_COUNT_MIN 1

#define DRBD_MINOR_COUNT_MAX (1U << 20)

#define DRBD_MINOR_COUNT_DEF 32

#define DRBD_MINOR_COUNT_SCALE '1'

#define DRBD_VOLUME_MAX 65535

#define DRBD_DIALOG_REFRESH_MIN 0

#define DRBD_DIALOG_REFRESH_MAX 600

#define DRBD_DIALOG_REFRESH_SCALE '1'

/* valid port number */

#define DRBD_PORT_MIN 1

#define DRBD_PORT_MAX 0xffff

#define DRBD_PORT_SCALE '1'

/* startup { */

  /* if you want more than 3.4 days, disable */

#define DRBD_WFC_TIMEOUT_MIN 0

#define DRBD_WFC_TIMEOUT_MAX 300000

#define DRBD_WFC_TIMEOUT_DEF 0

#define DRBD_WFC_TIMEOUT_SCALE '1'

#define DRBD_DEGR_WFC_TIMEOUT_MIN 0

#define DRBD_DEGR_WFC_TIMEOUT_MAX 300000

#define DRBD_DEGR_WFC_TIMEOUT_DEF 0

#define DRBD_DEGR_WFC_TIMEOUT_SCALE '1'

#define DRBD_OUTDATED_WFC_TIMEOUT_MIN 0

#define DRBD_OUTDATED_WFC_TIMEOUT_MAX 300000

#define DRBD_OUTDATED_WFC_TIMEOUT_DEF 0

#define DRBD_OUTDATED_WFC_TIMEOUT_SCALE '1'

/* }*/

/* net { */

#define DRBD_TIMEOUT_MIN 1

#define DRBD_TIMEOUT_MAX 600

#define DRBD_TIMEOUT_DEF 60       /* 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 0    /* 0 = disabled */

#define DRBD_CONNECT_INT_MIN 1

#define DRBD_CONNECT_INT_MAX 120

#define DRBD_CONNECT_INT_DEF 10   /* seconds */

#define DRBD_CONNECT_INT_SCALE '1'

  /* keep-alive probes when idle */

#define DRBD_PING_INT_MIN 1

#define DRBD_PING_INT_MAX 120

#define DRBD_PING_INT_DEF 10

#define DRBD_PING_INT_SCALE '1'

 /* timeout for the ping packets.*/

#define DRBD_PING_TIMEO_MIN  1

#define DRBD_PING_TIMEO_MAX  300

#define DRBD_PING_TIMEO_DEF  5

#define DRBD_PING_TIMEO_SCALE '1'

  /* max number of write requests between write barriers */

#define DRBD_MAX_EPOCH_SIZE_MIN 1

#define DRBD_MAX_EPOCH_SIZE_MAX 20000

#define DRBD_MAX_EPOCH_SIZE_DEF 2048

#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  0

#define DRBD_SNDBUF_SIZE_MAX  (10<<20)

#define DRBD_SNDBUF_SIZE_DEF  0

#define DRBD_SNDBUF_SIZE_SCALE '1'

#define DRBD_RCVBUF_SIZE_MIN  0

#define DRBD_RCVBUF_SIZE_MAX  (10<<20)

#define DRBD_RCVBUF_SIZE_DEF  0

#define DRBD_RCVBUF_SIZE_SCALE '1'

  /* @4k PageSize -> 128kB - 512MB */

#define DRBD_MAX_BUFFERS_MIN  32

#define DRBD_MAX_BUFFERS_MAX  131072

#define DRBD_MAX_BUFFERS_DEF  2048

#define DRBD_MAX_BUFFERS_SCALE '1'

  /* @4k PageSize -> 4kB - 512MB */

#define DRBD_UNPLUG_WATERMARK_MIN  1

#define DRBD_UNPLUG_WATERMARK_MAX  131072

#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  0

#define DRBD_KO_COUNT_MAX  200

#define DRBD_KO_COUNT_DEF  7

#define DRBD_KO_COUNT_SCALE '1'

/* } */

/* syncer { */

#define DRBD_AL_EXTENTS_MIN  7

#define DRBD_AL_EXTENTS_MAX  6433

#define DRBD_AL_EXTENTS_DEF  1237

#define DRBD_AL_EXTENTS_SCALE '1'

#define DRBD_MINOR_NUMBER_MIN  -1

#define DRBD_MINOR_NUMBER_MAX  (1<<30)

#define DRBD_MAX_BIO_BVECS_MIN 0

#define DRBD_MAX_BIO_BVECS_MAX 128

#define DRBD_MAX_BIO_BVECS_DEF 0

#define DRBD_MAX_BIO_BVECS_SCALE '1'

#define DRBD_C_PLAN_AHEAD_MIN  0

#define DRBD_C_PLAN_AHEAD_MAX  300

#define DRBD_C_PLAN_AHEAD_DEF  20

#define DRBD_C_PLAN_AHEAD_SCALE '1'

#define DRBD_C_DELAY_TARGET_MIN 1

#define DRBD_C_DELAY_TARGET_MAX 100

#define DRBD_C_DELAY_TARGET_DEF 10

#define DRBD_C_DELAY_TARGET_SCALE '1'

#define DRBD_C_FILL_TARGET_MIN 0

#define DRBD_C_FILL_TARGET_MAX (1<<20) /* 500MByte in sec */

#define DRBD_C_FILL_TARGET_DEF 100 /* Try to place 50KiB in socket send buffer during resync */

#define DRBD_C_FILL_TARGET_SCALE 's'  /* sectors */

#define DRBD_C_MAX_RATE_MIN     250 /* kByte/sec */

#define DRBD_C_MAX_RATE_MIN     250

#define DRBD_C_MAX_RATE_MAX     (4 << 20)

#define DRBD_C_MAX_RATE_DEF     102400

#define DRBD_C_MAX_RATE_SCALE	'k'  /* kilobytes */

#define DRBD_C_MIN_RATE_MIN     0 /* kByte/sec */

#define DRBD_C_MIN_RATE_MIN     0

#define DRBD_C_MIN_RATE_MAX     (4 << 20)

#define DRBD_C_MIN_RATE_DEF     250

#define DRBD_C_MIN_RATE_SCALE	'k'  /* kilobytes */

#define DRBD_CONG_FILL_MIN	0

#define DRBD_CONG_FILL_MAX	(10<<21) /* 10GByte in sectors */

#define DRBD_CONG_FILL_DEF	0

#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