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