| // SPDX-License-Identifier: GPL-2.0 | |
| #ifndef CRC32_H | |
| #define CRC32_H | |
| #include <stdint.h> | |
| extern const uint32_t crc32_table[256]; | |
| /* Return a 32-bit CRC of the contents of the buffer. */ | |
| static inline uint32_t | |
| crc32(uint32_t val, const void *ss, int len) | |
| { | |
| const unsigned char *s = ss; | |
| while (--len >= 0) | |
| val = crc32_table[(val ^ *s++) & 0xff] ^ (val >> 8); | |
| return val; | |
| } | |
| static inline unsigned int crc32buf(char *buf, size_t len) | |
| { | |
| return crc32(0xFFFFFFFF, buf, len); | |
| } | |
| #endif |