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authorJeff Garzik <jgarzik@pobox.com>2005-09-14 08:57:30 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-09-14 08:57:30 -0400
commitdbaa9a9d2b37d838125fb7f2b9fdc5dc5fa4eaa9 (patch)
tree8641efeba632bddfa0e486b41a5f19578b1a1a31 /include/linux/crc16.h
parent142e27fc8a3619471669d6241784eec9167c47d1 (diff)
parent2f4ba45a75d6383b4a1201169a808ffea416ffa0 (diff)
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'include/linux/crc16.h')
-rw-r--r--include/linux/crc16.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/crc16.h b/include/linux/crc16.h
new file mode 100644
index 000000000000..9443c084f881
--- /dev/null
+++ b/include/linux/crc16.h
@@ -0,0 +1,30 @@
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
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 */
30