1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_CRC32_POLY_H 2 #ifndef _LINUX_CRC32_POLY_H 3 #define _LINUX_CRC32_POLY_H 3 #define _LINUX_CRC32_POLY_H 4 4 5 /* 5 /* 6 * There are multiple 16-bit CRC polynomials i 6 * There are multiple 16-bit CRC polynomials in common use, but this is 7 * *the* standard CRC-32 polynomial, first pop 7 * *the* standard CRC-32 polynomial, first popularized by Ethernet. 8 * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8 8 * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x^1+x^0 9 */ 9 */ 10 #define CRC32_POLY_LE 0xedb88320 10 #define CRC32_POLY_LE 0xedb88320 11 #define CRC32_POLY_BE 0x04c11db7 11 #define CRC32_POLY_BE 0x04c11db7 12 12 13 /* 13 /* 14 * This is the CRC32c polynomial, as outlined 14 * This is the CRC32c polynomial, as outlined by Castagnoli. 15 * x^32+x^28+x^27+x^26+x^25+x^23+x^22+x^20+x^1 15 * x^32+x^28+x^27+x^26+x^25+x^23+x^22+x^20+x^19+x^18+x^14+x^13+x^11+x^10+x^9+ 16 * x^8+x^6+x^0 16 * x^8+x^6+x^0 17 */ 17 */ 18 #define CRC32C_POLY_LE 0x82F63B78 18 #define CRC32C_POLY_LE 0x82F63B78 19 19 20 #endif /* _LINUX_CRC32_POLY_H */ 20 #endif /* _LINUX_CRC32_POLY_H */ 21 21
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