crc16.h 622 B

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  1. /*
  2. * crc16.h - CRC-16 routine
  3. *
  4. * Implements the standard CRC-16:
  5. * Width 16
  6. * Poly 0x8005 (x^16 + x^15 + x^2 + 1)
  7. * Init 0
  8. *
  9. * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com>
  10. *
  11. * This source code is licensed under the GNU General Public License,
  12. * Version 2. See the file COPYING for more details.
  13. */
  14. #ifndef __CRC16_H
  15. #define __CRC16_H
  16. #include <linux/types.h>
  17. extern u16 const crc16_table[256];
  18. extern u16 crc16(u16 crc, const u8 *buffer, size_t len);
  19. static inline u16 crc16_byte(u16 crc, const u8 data)
  20. {
  21. return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff];
  22. }
  23. #endif /* __CRC16_H */