1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *	crc16.h - CRC-16 routine
4 *
5 * Implements the standard CRC-16:
6 *   Width 16
7 *   Poly  0x8005 (x^16 + x^15 + x^2 + 1)
8 *   Init  0
9 *
10 * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com>
11 */
12
13#ifndef __CRC16_H
14#define __CRC16_H
15
16#include <linux/types.h>
17
18extern u16 const crc16_table[256];
19
20extern u16 crc16(u16 crc, const u8 *buffer, size_t len);
21
22static inline u16 crc16_byte(u16 crc, const u8 data)
23{
24	return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff];
25}
26
27#endif /* __CRC16_H */
28
29