1 /* 2 * Copyright (c) 2013 Google, Inc 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 8 #ifndef __linux_crc8_h 9 #define __linux_crc8_h 10 11 /** 12 * crc8() - Calculate and return CRC-8 of the data 13 * 14 * This uses an x^8 + x^2 + x + 1 polynomial. A table-based algorithm would 15 * be faster, but for only a few bytes it isn't worth the code size 16 * 17 * @vptr: Buffer to checksum 18 * @len: Length of buffer in bytes 19 * @return CRC8 checksum 20 */ 21 unsigned int crc8(const unsigned char *vptr, int len); 22 23 #endif 24