include/linux/crc32poly.h

   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  */
  10 #define CRC32_POLY_LE 0xedb88320
  11 #define CRC32_POLY_BE 0x04c11db7
  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 */