[u-boot.git] / include / zfs / spa.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 *  GRUB  --  GRand Unified Bootloader
 *  Copyright (C) 1999,2000,2001,2002,2003,2004  Free Software Foundation, Inc.
 */
/*
 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
 */

#ifndef ZFS_SPA_HEADER
#define	ZFS_SPA_HEADER 1

/*
 * General-purpose 32-bit and 64-bit bitfield encodings.
 */
#define	BF32_DECODE(x, low, len)	P2PHASE((x) >> (low), 1U << (len))
#define	BF64_DECODE(x, low, len)	P2PHASE((x) >> (low), 1ULL << (len))
#define	BF32_ENCODE(x, low, len)	(P2PHASE((x), 1U << (len)) << (low))
#define	BF64_ENCODE(x, low, len)	(P2PHASE((x), 1ULL << (len)) << (low))

#define	BF32_GET(x, low, len)		BF32_DECODE(x, low, len)
#define	BF64_GET(x, low, len)		BF64_DECODE(x, low, len)

#define	BF32_SET(x, low, len, val)						\
	((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len))
#define	BF64_SET(x, low, len, val)						\
	((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len))

#define	BF32_GET_SB(x, low, len, shift, bias)		\
	((BF32_GET(x, low, len) + (bias)) << (shift))
#define	BF64_GET_SB(x, low, len, shift, bias)		\
	((BF64_GET(x, low, len) + (bias)) << (shift))

#define	BF32_SET_SB(x, low, len, shift, bias, val)		\
	BF32_SET(x, low, len, ((val) >> (shift)) - (bias))
#define	BF64_SET_SB(x, low, len, shift, bias, val)		\
	BF64_SET(x, low, len, ((val) >> (shift)) - (bias))

/*
 * We currently support nine block sizes, from 512 bytes to 128K.
 * We could go higher, but the benefits are near-zero and the cost
 * of COWing a giant block to modify one byte would become excessive.
 */
#define	SPA_MINBLOCKSHIFT	9
#define	SPA_MAXBLOCKSHIFT	17
#define	SPA_MINBLOCKSIZE	(1ULL << SPA_MINBLOCKSHIFT)
#define	SPA_MAXBLOCKSIZE	(1ULL << SPA_MAXBLOCKSHIFT)

#define	SPA_BLOCKSIZES		(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)

/*
 * Size of block to hold the configuration data (a packed nvlist)
 */
#define	SPA_CONFIG_BLOCKSIZE	(1 << 14)

/*
 * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
 * The ASIZE encoding should be at least 64 times larger (6 more bits)
 * to support up to 4-way RAID-Z mirror mode with worst-case gang block
 * overhead, three DVAs per bp, plus one more bit in case we do anything
 * else that expands the ASIZE.
 */
#define	SPA_LSIZEBITS		16	/* LSIZE up to 32M (2^16 * 512)	*/
#define	SPA_PSIZEBITS		16	/* PSIZE up to 32M (2^16 * 512)	*/
#define	SPA_ASIZEBITS		24	/* ASIZE up to 64 times larger	*/

/*
 * All SPA data is represented by 128-bit data virtual addresses (DVAs).
 * The members of the dva_t should be considered opaque outside the SPA.
 */
typedef struct dva {
	uint64_t	dva_word[2];
} dva_t;

/*
 * Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
 */
typedef struct zio_cksum {
	uint64_t	zc_word[4];
} zio_cksum_t;

/*
 * Each block is described by its DVAs, time of birth, checksum, etc.
 * The word-by-word, bit-by-bit layout of the blkptr is as follows:
 *
 *	64	56	48	40	32	24	16	8	0
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 0	|		vdev1		| GRID	|	  ASIZE		|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 1	|G|			 offset1				|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 2	|		vdev2		| GRID	|	  ASIZE		|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 3	|G|			 offset2				|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 4	|		vdev3		| GRID	|	  ASIZE		|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 5	|G|			 offset3				|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 6	|BDX|lvl| type	| cksum | comp	|	  PSIZE	|	  LSIZE	|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 7	|			padding					|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 8	|			padding					|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * 9	|			physical birth txg			|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * a	|			logical birth txg			|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * b	|			fill count				|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * c	|			checksum[0]				|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * d	|			checksum[1]				|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * e	|			checksum[2]				|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 * f	|			checksum[3]				|
 *	+-------+-------+-------+-------+-------+-------+-------+-------+
 *
 * Legend:
 *
 * vdev		virtual device ID
 * offset	offset into virtual device
 * LSIZE	logical size
 * PSIZE	physical size (after compression)
 * ASIZE	allocated size (including RAID-Z parity and gang block headers)
 * GRID		RAID-Z layout information (reserved for future use)
 * cksum	checksum function
 * comp		compression function
 * G		gang block indicator
 * B		byteorder (endianness)
 * D		dedup
 * X		unused
 * lvl		level of indirection
 * type		DMU object type
 * phys birth	txg of block allocation; zero if same as logical birth txg
 * log. birth	transaction group in which the block was logically born
 * fill count	number of non-zero blocks under this bp
 * checksum[4]	256-bit checksum of the data this bp describes
 */
#define	SPA_BLKPTRSHIFT	7		/* blkptr_t is 128 bytes	*/
#define	SPA_DVAS_PER_BP	3		/* Number of DVAs in a bp	*/

typedef struct blkptr {
	dva_t		blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
	uint64_t	blk_prop;	/* size, compression, type, etc		*/
	uint64_t	blk_pad[2];	/* Extra space for the future		*/
	uint64_t	blk_phys_birth;	/* txg when block was allocated		*/
	uint64_t	blk_birth;	/* transaction group at birth		*/
	uint64_t	blk_fill;	/* fill count				*/
	zio_cksum_t	blk_cksum;	/* 256-bit checksum			*/
} blkptr_t;

/*
 * Macros to get and set fields in a bp or DVA.
 */
#define	DVA_GET_ASIZE(dva)											\
	BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0)
#define	DVA_SET_ASIZE(dva, x)										\
	BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x)

#define	DVA_GET_GRID(dva)	BF64_GET((dva)->dva_word[0], 24, 8)
#define	DVA_SET_GRID(dva, x)	BF64_SET((dva)->dva_word[0], 24, 8, x)

#define	DVA_GET_VDEV(dva)	BF64_GET((dva)->dva_word[0], 32, 32)
#define	DVA_SET_VDEV(dva, x)	BF64_SET((dva)->dva_word[0], 32, 32, x)

#define	DVA_GET_GANG(dva)	BF64_GET((dva)->dva_word[1], 63, 1)
#define	DVA_SET_GANG(dva, x)	BF64_SET((dva)->dva_word[1], 63, 1, x)

#define	BP_GET_LSIZE(bp)										\
	BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1)
#define	BP_SET_LSIZE(bp, x)										\
	BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x)

#define	BP_GET_COMPRESS(bp)		BF64_GET((bp)->blk_prop, 32, 8)
#define	BP_SET_COMPRESS(bp, x)		BF64_SET((bp)->blk_prop, 32, 8, x)

#define	BP_GET_CHECKSUM(bp)		BF64_GET((bp)->blk_prop, 40, 8)
#define	BP_SET_CHECKSUM(bp, x)		BF64_SET((bp)->blk_prop, 40, 8, x)

#define	BP_GET_TYPE(bp)			BF64_GET((bp)->blk_prop, 48, 8)
#define	BP_SET_TYPE(bp, x)		BF64_SET((bp)->blk_prop, 48, 8, x)

#define	BP_GET_LEVEL(bp)		BF64_GET((bp)->blk_prop, 56, 5)
#define	BP_SET_LEVEL(bp, x)		BF64_SET((bp)->blk_prop, 56, 5, x)

#define	BP_GET_PROP_BIT_61(bp)		BF64_GET((bp)->blk_prop, 61, 1)
#define	BP_SET_PROP_BIT_61(bp, x)	BF64_SET((bp)->blk_prop, 61, 1, x)

#define	BP_GET_DEDUP(bp)		BF64_GET((bp)->blk_prop, 62, 1)
#define	BP_SET_DEDUP(bp, x)		BF64_SET((bp)->blk_prop, 62, 1, x)

#define	BP_GET_BYTEORDER(bp)		(0 - BF64_GET((bp)->blk_prop, 63, 1))
#define	BP_SET_BYTEORDER(bp, x)		BF64_SET((bp)->blk_prop, 63, 1, x)

#define	BP_PHYSICAL_BIRTH(bp)										\
	((bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)

#define	BP_SET_BIRTH(bp, logical, physical)								\
	{																	\
		(bp)->blk_birth = (logical);									\
		(bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
	}

#define	BP_GET_ASIZE(bp)												\
	(DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
	 DVA_GET_ASIZE(&(bp)->blk_dva[2]))

#define	BP_GET_UCSIZE(bp)												\
	((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ?	\
	 BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp));

#define	BP_GET_NDVAS(bp)						\
	(!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) +		\
	 !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) +		\
	 !!DVA_GET_ASIZE(&(bp)->blk_dva[2]))

#define	BP_COUNT_GANG(bp)						\
	(DVA_GET_GANG(&(bp)->blk_dva[0]) +			\
	 DVA_GET_GANG(&(bp)->blk_dva[1]) +			\
	 DVA_GET_GANG(&(bp)->blk_dva[2]))

#define	DVA_EQUAL(dva1, dva2)						\
	((dva1)->dva_word[1] == (dva2)->dva_word[1] &&	\
	 (dva1)->dva_word[0] == (dva2)->dva_word[0])

#define	BP_EQUAL(bp1, bp2)									\
	(BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) &&	\
	 DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) &&	\
	 DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) &&	\
	 DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))

#define	ZIO_CHECKSUM_EQUAL(zc1, zc2)				\
	(0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) |	\
		   ((zc1).zc_word[1] - (zc2).zc_word[1]) |	\
		   ((zc1).zc_word[2] - (zc2).zc_word[2]) |	\
		   ((zc1).zc_word[3] - (zc2).zc_word[3])))

#define	DVA_IS_VALID(dva)	(DVA_GET_ASIZE(dva) != 0)

#define	ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3)	\
	{											\
		(zcp)->zc_word[0] = w0;					\
		(zcp)->zc_word[1] = w1;					\
		(zcp)->zc_word[2] = w2;					\
		(zcp)->zc_word[3] = w3;					\
	}

#define	BP_IDENTITY(bp)		(&(bp)->blk_dva[0])
#define	BP_IS_GANG(bp)		DVA_GET_GANG(BP_IDENTITY(bp))
#define	BP_IS_HOLE(bp)		((bp)->blk_birth == 0)

/* BP_IS_RAIDZ(bp) assumes no block compression */
#define	BP_IS_RAIDZ(bp)		(DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
							 BP_GET_PSIZE(bp))

#define	BP_ZERO(bp)										\
	{													\
		(bp)->blk_dva[0].dva_word[0] = 0;				\
		(bp)->blk_dva[0].dva_word[1] = 0;				\
		(bp)->blk_dva[1].dva_word[0] = 0;				\
		(bp)->blk_dva[1].dva_word[1] = 0;				\
		(bp)->blk_dva[2].dva_word[0] = 0;				\
		(bp)->blk_dva[2].dva_word[1] = 0;				\
		(bp)->blk_prop = 0;								\
		(bp)->blk_pad[0] = 0;							\
		(bp)->blk_pad[1] = 0;							\
		(bp)->blk_phys_birth = 0;						\
		(bp)->blk_birth = 0;							\
		(bp)->blk_fill = 0;								\
		ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0);	\
	}

#define	BP_SPRINTF_LEN	320

#endif	/* ! ZFS_SPA_HEADER */
Commit	Line	Data
83d290c5	1	/* SPDX-License-Identifier: GPL-2.0+ */
4d3c95f5 JL	2	/*
	3	* GRUB -- GRand Unified Bootloader
	4	* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
4d3c95f5 JL	5	*/
	6	/*
	7	* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
	8	*/
	9
	10	#ifndef ZFS_SPA_HEADER
	11	#define ZFS_SPA_HEADER 1
	12
4d3c95f5 JL	13	/*
	14	* General-purpose 32-bit and 64-bit bitfield encodings.
	15	*/
	16	#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
	17	#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
	18	#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
	19	#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
	20
	21	#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
	22	#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
	23
	24	#define BF32_SET(x, low, len, val) \
	25	((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len))
	26	#define BF64_SET(x, low, len, val) \
	27	((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len))
	28
	29	#define BF32_GET_SB(x, low, len, shift, bias) \
	30	((BF32_GET(x, low, len) + (bias)) << (shift))
	31	#define BF64_GET_SB(x, low, len, shift, bias) \
	32	((BF64_GET(x, low, len) + (bias)) << (shift))
	33
	34	#define BF32_SET_SB(x, low, len, shift, bias, val) \
	35	BF32_SET(x, low, len, ((val) >> (shift)) - (bias))
	36	#define BF64_SET_SB(x, low, len, shift, bias, val) \
	37	BF64_SET(x, low, len, ((val) >> (shift)) - (bias))
	38
	39	/*
	40	* We currently support nine block sizes, from 512 bytes to 128K.
	41	* We could go higher, but the benefits are near-zero and the cost
	42	* of COWing a giant block to modify one byte would become excessive.
	43	*/
	44	#define SPA_MINBLOCKSHIFT 9
	45	#define SPA_MAXBLOCKSHIFT 17
	46	#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
	47	#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
	48
	49	#define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)
	50
	51	/*
	52	* Size of block to hold the configuration data (a packed nvlist)
	53	*/
	54	#define SPA_CONFIG_BLOCKSIZE (1 << 14)
	55
	56	/*
	57	* The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
	58	* The ASIZE encoding should be at least 64 times larger (6 more bits)
	59	* to support up to 4-way RAID-Z mirror mode with worst-case gang block
	60	* overhead, three DVAs per bp, plus one more bit in case we do anything
	61	* else that expands the ASIZE.
	62	*/
	63	#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
	64	#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
	65	#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
	66
	67	/*
	68	* All SPA data is represented by 128-bit data virtual addresses (DVAs).
	69	* The members of the dva_t should be considered opaque outside the SPA.
	70	*/
	71	typedef struct dva {
	72	uint64_t dva_word[2];
	73	} dva_t;
	74
	75	/*
	76	* Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
77	*/
78	typedef struct zio_cksum {
79	uint64_t zc_word[4];
80	} zio_cksum_t;
81
82	/*
83	* Each block is described by its DVAs, time of birth, checksum, etc.
84	* The word-by-word, bit-by-bit layout of the blkptr is as follows:
85	*
86	* 64 56 48 40 32 24 16 8 0
87	* +-------+-------+-------+-------+-------+-------+-------+-------+
88	* 0 \| vdev1 \| GRID \| ASIZE \|
89	* +-------+-------+-------+-------+-------+-------+-------+-------+
90	* 1 \|G\| offset1 \|
91	* +-------+-------+-------+-------+-------+-------+-------+-------+
92	* 2 \| vdev2 \| GRID \| ASIZE \|
93	* +-------+-------+-------+-------+-------+-------+-------+-------+
94	* 3 \|G\| offset2 \|
95	* +-------+-------+-------+-------+-------+-------+-------+-------+
96	* 4 \| vdev3 \| GRID \| ASIZE \|
97	* +-------+-------+-------+-------+-------+-------+-------+-------+
98	* 5 \|G\| offset3 \|
99	* +-------+-------+-------+-------+-------+-------+-------+-------+
100	* 6 \|BDX\|lvl\| type \| cksum \| comp \| PSIZE \| LSIZE \|
101	* +-------+-------+-------+-------+-------+-------+-------+-------+
102	* 7 \| padding \|
103	* +-------+-------+-------+-------+-------+-------+-------+-------+
104	* 8 \| padding \|
105	* +-------+-------+-------+-------+-------+-------+-------+-------+
106	* 9 \| physical birth txg \|
107	* +-------+-------+-------+-------+-------+-------+-------+-------+
108	* a \| logical birth txg \|
109	* +-------+-------+-------+-------+-------+-------+-------+-------+
110	* b \| fill count \|
111	* +-------+-------+-------+-------+-------+-------+-------+-------+
112	* c \| checksum[0] \|
113	* +-------+-------+-------+-------+-------+-------+-------+-------+
114	* d \| checksum[1] \|
115	* +-------+-------+-------+-------+-------+-------+-------+-------+
116	* e \| checksum[2] \|
117	* +-------+-------+-------+-------+-------+-------+-------+-------+
118	* f \| checksum[3] \|
119	* +-------+-------+-------+-------+-------+-------+-------+-------+
120	*
121	* Legend:
122	*
123	* vdev virtual device ID
124	* offset offset into virtual device
125	* LSIZE logical size
126	* PSIZE physical size (after compression)
127	* ASIZE allocated size (including RAID-Z parity and gang block headers)
128	* GRID RAID-Z layout information (reserved for future use)
129	* cksum checksum function
130	* comp compression function
131	* G gang block indicator
132	* B byteorder (endianness)
133	* D dedup
134	* X unused
135	* lvl level of indirection
136	* type DMU object type
137	* phys birth txg of block allocation; zero if same as logical birth txg
138	* log. birth transaction group in which the block was logically born
139	* fill count number of non-zero blocks under this bp
140	* checksum[4] 256-bit checksum of the data this bp describes
141	*/
142	#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
143	#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
144
145	typedef struct blkptr {
146	dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
147	uint64_t blk_prop; /* size, compression, type, etc */
148	uint64_t blk_pad[2]; /* Extra space for the future */
149	uint64_t blk_phys_birth; /* txg when block was allocated */
150	uint64_t blk_birth; /* transaction group at birth */
151	uint64_t blk_fill; /* fill count */
152	zio_cksum_t blk_cksum; /* 256-bit checksum */
153	} blkptr_t;
154
155	/*
156	* Macros to get and set fields in a bp or DVA.
157	*/
158	#define DVA_GET_ASIZE(dva) \
159	BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0)
160	#define DVA_SET_ASIZE(dva, x) \
161	BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x)
162
163	#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
164	#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
165
166	#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
167	#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
168
169	#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
170	#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
171
172	#define BP_GET_LSIZE(bp) \
173	BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1)
174	#define BP_SET_LSIZE(bp, x) \
175	BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x)
176
177	#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8)
178	#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x)
179
180	#define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8)
181	#define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x)
182
183	#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
184	#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
185
186	#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
187	#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
188
189	#define BP_GET_PROP_BIT_61(bp) BF64_GET((bp)->blk_prop, 61, 1)
190	#define BP_SET_PROP_BIT_61(bp, x) BF64_SET((bp)->blk_prop, 61, 1, x)
191
192	#define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
193	#define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
194
195	#define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1))
196	#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
197
198	#define BP_PHYSICAL_BIRTH(bp) \
199	((bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
200
201	#define BP_SET_BIRTH(bp, logical, physical) \
202	{ \
203	(bp)->blk_birth = (logical); \
204	(bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
205	}
206
207	#define BP_GET_ASIZE(bp) \
208	(DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
209	DVA_GET_ASIZE(&(bp)->blk_dva[2]))
210
211	#define BP_GET_UCSIZE(bp) \
212	((BP_GET_LEVEL(bp) > 0 \|\| dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \
213	BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp));
214
215	#define BP_GET_NDVAS(bp) \
216	(!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
217	!!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
218	!!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
219
220	#define BP_COUNT_GANG(bp) \
221	(DVA_GET_GANG(&(bp)->blk_dva[0]) + \
222	DVA_GET_GANG(&(bp)->blk_dva[1]) + \
223	DVA_GET_GANG(&(bp)->blk_dva[2]))
224
225	#define DVA_EQUAL(dva1, dva2) \
226	((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
227	(dva1)->dva_word[0] == (dva2)->dva_word[0])
228
229	#define BP_EQUAL(bp1, bp2) \
230	(BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
231	DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
232	DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
233	DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
234
235	#define ZIO_CHECKSUM_EQUAL(zc1, zc2) \
236	(0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) \| \
237	((zc1).zc_word[1] - (zc2).zc_word[1]) \| \
238	((zc1).zc_word[2] - (zc2).zc_word[2]) \| \
239	((zc1).zc_word[3] - (zc2).zc_word[3])))
240
241	#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
242
243	#define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \
244	{ \
245	(zcp)->zc_word[0] = w0; \
246	(zcp)->zc_word[1] = w1; \
247	(zcp)->zc_word[2] = w2; \
248	(zcp)->zc_word[3] = w3; \
249	}
250
251	#define BP_IDENTITY(bp) (&(bp)->blk_dva[0])
252	#define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp))
253	#define BP_IS_HOLE(bp) ((bp)->blk_birth == 0)
254
255	/* BP_IS_RAIDZ(bp) assumes no block compression */
256	#define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
257	BP_GET_PSIZE(bp))
258
259	#define BP_ZERO(bp) \
260	{ \
261	(bp)->blk_dva[0].dva_word[0] = 0; \
262	(bp)->blk_dva[0].dva_word[1] = 0; \
263	(bp)->blk_dva[1].dva_word[0] = 0; \
264	(bp)->blk_dva[1].dva_word[1] = 0; \
265	(bp)->blk_dva[2].dva_word[0] = 0; \
266	(bp)->blk_dva[2].dva_word[1] = 0; \
267	(bp)->blk_prop = 0; \
268	(bp)->blk_pad[0] = 0; \
269	(bp)->blk_pad[1] = 0; \
270	(bp)->blk_phys_birth = 0; \
271	(bp)->blk_birth = 0; \
272	(bp)->blk_fill = 0; \
273	ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
274	}
275
276	#define BP_SPRINTF_LEN 320
277
278	#endif /* ! ZFS_SPA_HEADER */