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Stefan Roese9eefe2a2009-03-19 15:35:05 +01001/*
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
15#ifndef __CRC16_H
16#define __CRC16_H
17
18#include <linux/types.h>
19
20extern u16 const crc16_table[256];
21
22extern u16 crc16(u16 crc, const u8 *buffer, size_t len);
23
24static inline u16 crc16_byte(u16 crc, const u8 data)
25{
26 return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff];
27}
28
29#endif /* __CRC16_H */