diff options
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/crc8.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/crc8.h b/include/linux/crc8.h new file mode 100644 index 00000000000..b5fd2ac9d6e --- /dev/null +++ b/include/linux/crc8.h @@ -0,0 +1,23 @@ +/* + * Copyright (c) 2013 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + + +#ifndef __linux_crc8_h +#define __linux_crc8_h + +/** + * crc8() - Calculate and return CRC-8 of the data + * + * This uses an x^8 + x^2 + x + 1 polynomial. A table-based algorithm would + * be faster, but for only a few bytes it isn't worth the code size + * + * @vptr: Buffer to checksum + * @len: Length of buffer in bytes + * @return CRC8 checksum + */ +unsigned int crc8(const unsigned char *vptr, int len); + +#endif |