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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_CRC32_POLY_H | |
3 | #define _LINUX_CRC32_POLY_H | |
4 | ||
5 | /* | |
6 | * There are multiple 16-bit CRC polynomials in common use, but this is | |
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+x^7+x^5+x^4+x^2+x^1+x^0 | |
9 | */ | |
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10 | #define CRC32_POLY_LE 0xedb88320 |
11 | #define CRC32_POLY_BE 0x04c11db7 | |
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12 | |
13 | /* | |
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^19+x^18+x^14+x^13+x^11+x^10+x^9+ | |
16 | * x^8+x^6+x^0 | |
17 | */ | |
18 | #define CRC32C_POLY_LE 0x82F63B78 | |
19 | ||
20 | #endif /* _LINUX_CRC32_POLY_H */ |