diff options
author | Dongsheng Yang <yangds.fnst@cn.fujitsu.com> | 2015-10-31 11:12:01 +0800 |
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committer | Brian Norris <computersforpeace@gmail.com> | 2015-11-11 14:38:40 -0800 |
commit | 7d81790ced345585b1e647ca9d0f6678e7062fa4 (patch) | |
tree | 02f61270c7a0fff7bb6b2e28f247a3d2fd6ff490 /ubifs-utils/mkfs.ubifs/crc16.h | |
parent | 344753f2aacb94d98ce238f81fc4a4b6ef6adea9 (diff) |
mtd-utils: Restructure the mtd-utils source.
* There is no code modification in this commit, only moving
* the files to proper place.
The user tools looks a little messy as we place almost
the all tools in the root directory of mtd-utils. To make
it more clear, I propose to introduce the following structure
for our source code.
mtd-utils/
|-- lib
|-- include
|-- misc-utils
|-- jffsX-utils
|-- nand-utils
|-- nor-utils
|-- ubi-utils
|-- ubifs-utils
`-- tests
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'ubifs-utils/mkfs.ubifs/crc16.h')
-rw-r--r-- | ubifs-utils/mkfs.ubifs/crc16.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/ubifs-utils/mkfs.ubifs/crc16.h b/ubifs-utils/mkfs.ubifs/crc16.h new file mode 100644 index 0000000..539d21a --- /dev/null +++ b/ubifs-utils/mkfs.ubifs/crc16.h @@ -0,0 +1,27 @@ +/* + * 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 code was taken from the linux kernel. The license is GPL Version 2. + */ + +#ifndef __CRC16_H__ +#define __CRC16_H__ + +#include <stdlib.h> +#include <stdint.h> + +extern uint16_t const crc16_table[256]; + +extern uint16_t crc16(uint16_t crc, const uint8_t *buffer, size_t len); + +static inline uint16_t crc16_byte(uint16_t crc, const uint8_t data) +{ + return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff]; +} + +#endif /* __CRC16_H__ */ |