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include: implement be{32,64}_to_cpu() and cpu_to_be{32,64}() macros

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libbpf is now using above macros for libbpf_sha256() implementation,
make them available in Github repo.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
This commit is contained in:
Andrii Nakryiko
2025-09-30 14:11:12 -07:00
committed by Andrii Nakryiko
parent 6920913226
commit 9705048c0e
1 changed files with 14 additions and 0 deletions
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14
include/linux/kernel.h
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@@ -43,4 +43,18 @@
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define be32_to_cpu(x) __builtin_bswap32(x)
#define cpu_to_be32(x) __builtin_bswap32(x)
#define be64_to_cpu(x) __builtin_bswap64(x)
#define cpu_to_be64(x) __builtin_bswap64(x)
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define be32_to_cpu(x) (x)
#define cpu_to_be32(x) (x)
#define be64_to_cpu(x) (x)
#define cpu_to_be64(x) (x)
#else
# error "__BYTE_ORDER__ undefined or invalid"
#endif
#endif