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linux-kernelorg-stable/include/linux/crc32poly.h

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lib/crc: Move polynomial definition to separate header Allow other drivers and parts of kernel to use the same define for CRC32 polynomial, instead of duplicating it in many places. This code does not bring any functional changes, except moving existing code. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-07-17 16:05:36 +00:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_CRC32_POLY_H
#define _LINUX_CRC32_POLY_H
lib/crc: crc32: Document crc32_le(), crc32_be(), and crc32c() Document these widely used functions. Update kernel-api.rst to point to the correct place, instead of to crc32-main.c which no longer contains kerneldoc comments. Simplify the documentation in crc32poly.h to just point to the corresponding functions, now that they are properly documented. Change the value of CRC32C_POLY_LE to lower case, for consistency. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250619183414.100082-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2025-06-19 18:34:12 +00:00
/* The polynomial used by crc32_le(), in integer form. See crc32_le(). */
lib/crc: Use consistent naming for CRC-32 polynomials Header was defining CRCPOLY_LE/BE and CRC32C_POLY_LE but in fact all of them are CRC-32 polynomials so use consistent naming. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-07-17 16:05:37 +00:00
#define CRC32_POLY_LE 0xedb88320
lib/crc: crc32: Document crc32_le(), crc32_be(), and crc32c() Document these widely used functions. Update kernel-api.rst to point to the correct place, instead of to crc32-main.c which no longer contains kerneldoc comments. Simplify the documentation in crc32poly.h to just point to the corresponding functions, now that they are properly documented. Change the value of CRC32C_POLY_LE to lower case, for consistency. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250619183414.100082-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2025-06-19 18:34:12 +00:00
/* The polynomial used by crc32_be(), in integer form. See crc32_be(). */
lib/crc: Use consistent naming for CRC-32 polynomials Header was defining CRCPOLY_LE/BE and CRC32C_POLY_LE but in fact all of them are CRC-32 polynomials so use consistent naming. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-07-17 16:05:37 +00:00
#define CRC32_POLY_BE 0x04c11db7
lib/crc: Move polynomial definition to separate header Allow other drivers and parts of kernel to use the same define for CRC32 polynomial, instead of duplicating it in many places. This code does not bring any functional changes, except moving existing code. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-07-17 16:05:36 +00:00
lib/crc: crc32: Document crc32_le(), crc32_be(), and crc32c() Document these widely used functions. Update kernel-api.rst to point to the correct place, instead of to crc32-main.c which no longer contains kerneldoc comments. Simplify the documentation in crc32poly.h to just point to the corresponding functions, now that they are properly documented. Change the value of CRC32C_POLY_LE to lower case, for consistency. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250619183414.100082-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2025-06-19 18:34:12 +00:00
/* The polynomial used by crc32c(), in integer form. See crc32c(). */
#define CRC32C_POLY_LE 0x82f63b78
lib/crc: Move polynomial definition to separate header Allow other drivers and parts of kernel to use the same define for CRC32 polynomial, instead of duplicating it in many places. This code does not bring any functional changes, except moving existing code. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-07-17 16:05:36 +00:00
#endif /* _LINUX_CRC32_POLY_H */