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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _VSTRUCTS_H3#define _VSTRUCTS_H4 5#include "util.h"6 7/*8 * NOTE: we can't differentiate between __le64 and u64 with type_is - this9 * assumes u64 is little endian:10 */11#define __vstruct_u64s(_s) \12({ \13 ( type_is((_s)->u64s, u64) ? le64_to_cpu((__force __le64) (_s)->u64s) \14 : type_is((_s)->u64s, u32) ? le32_to_cpu((__force __le32) (_s)->u64s) \15 : type_is((_s)->u64s, u16) ? le16_to_cpu((__force __le16) (_s)->u64s) \16 : ((__force u8) ((_s)->u64s))); \17})18 19#define __vstruct_bytes(_type, _u64s) \20({ \21 BUILD_BUG_ON(offsetof(_type, _data) % sizeof(u64)); \22 \23 (size_t) (offsetof(_type, _data) + (_u64s) * sizeof(u64)); \24})25 26#define vstruct_bytes(_s) \27 __vstruct_bytes(typeof(*(_s)), __vstruct_u64s(_s))28 29#define __vstruct_blocks(_type, _sector_block_bits, _u64s) \30 (round_up(__vstruct_bytes(_type, _u64s), \31 512 << (_sector_block_bits)) >> (9 + (_sector_block_bits)))32 33#define vstruct_blocks(_s, _sector_block_bits) \34 __vstruct_blocks(typeof(*(_s)), _sector_block_bits, __vstruct_u64s(_s))35 36#define vstruct_blocks_plus(_s, _sector_block_bits, _u64s) \37 __vstruct_blocks(typeof(*(_s)), _sector_block_bits, \38 __vstruct_u64s(_s) + (_u64s))39 40#define vstruct_sectors(_s, _sector_block_bits) \41 (round_up(vstruct_bytes(_s), 512 << (_sector_block_bits)) >> 9)42 43#define vstruct_next(_s) \44 ((typeof(_s)) ((u64 *) (_s)->_data + __vstruct_u64s(_s)))45#define vstruct_last(_s) \46 ((typeof(&(_s)->start[0])) ((u64 *) (_s)->_data + __vstruct_u64s(_s)))47#define vstruct_end(_s) \48 ((void *) ((u64 *) (_s)->_data + __vstruct_u64s(_s)))49 50#define vstruct_for_each(_s, _i) \51 for (typeof(&(_s)->start[0]) _i = (_s)->start; \52 _i < vstruct_last(_s); \53 _i = vstruct_next(_i))54 55#define vstruct_for_each_safe(_s, _i) \56 for (typeof(&(_s)->start[0]) _next, _i = (_s)->start; \57 _i < vstruct_last(_s) && (_next = vstruct_next(_i), true); \58 _i = _next)59 60#define vstruct_idx(_s, _idx) \61 ((typeof(&(_s)->start[0])) ((_s)->_data + (_idx)))62 63#endif /* _VSTRUCTS_H */64