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| author | Wolfgang Denk <wd@denx.de> | 2009-03-21 22:15:49 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2009-03-21 22:15:49 +0100 |
| commit | ee1702d75a30d076139d1841383a1fa7220a0e11 (patch) | |
| tree | b008c231b7d5e4e52ac49aec9a49bc73413aaf30 /fs/ubifs/crc16.h | |
| parent | e60beb13cf0135dc71c541021487b5ccc4d269cb (diff) | |
| parent | faac4fd852e39cb1d7a740801b060e41aeacef1f (diff) | |
Merge branch 'next' of ../next
Diffstat (limited to 'fs/ubifs/crc16.h')
| -rw-r--r-- | fs/ubifs/crc16.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/fs/ubifs/crc16.h b/fs/ubifs/crc16.h new file mode 100644 index 0000000000..9443c084f8 --- /dev/null +++ b/fs/ubifs/crc16.h @@ -0,0 +1,30 @@ +/* + * crc16.h - CRC-16 routine + * + * Implements the standard CRC-16: + * Width 16 + * Poly 0x8005 (x^16 + x^15 + x^2 + 1) + * Init 0 + * + * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com> + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#ifndef __CRC16_H +#define __CRC16_H + +#include <linux/types.h> + +extern u16 const crc16_table[256]; + +extern u16 crc16(u16 crc, const u8 *buffer, size_t len); + +static inline u16 crc16_byte(u16 crc, const u8 data) +{ + return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff]; +} + +#endif /* __CRC16_H */ + |