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xor.h
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1/*
2 * SPDX-FileCopyrightText: 2021 Benjamin Valentin <benjamin.valentin@ml-pa.com>
3 * SPDX-License-Identifier: LGPL-2.1-only
4 */
5
6#pragma once
7
25
26#include <stddef.h>
27#include <stdint.h>
28
29#ifdef __cplusplus
30extern "C" {
31#endif
32
36#ifndef CONFIG_CODING_XOR_CHECK_BYTES
37#define CONFIG_CODING_XOR_CHECK_BYTES 3U
38#endif
39
45#define CODING_XOR_PARITY_LEN(in) (((in) + CONFIG_CODING_XOR_CHECK_BYTES - 1) \
46 / CONFIG_CODING_XOR_CHECK_BYTES)
47
61void coding_xor_generate(void *data, size_t len, uint8_t *parity);
62
82bool coding_xor_recover(void *data, size_t len, uint8_t *parity,
83 uint8_t *blocks, size_t block_size, bool recover_parity);
84#ifdef __cplusplus
85}
86#endif
87
coding_xor_generate
void coding_xor_generate(void *data, size_t len, uint8_t *parity)
Generate parity and mix data buffer.
coding_xor_recover
bool coding_xor_recover(void *data, size_t len, uint8_t *parity, uint8_t *blocks, size_t block_size, bool recover_parity)
Restore and unmix buffer.