/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ /* Copyright (C) 2015-2017 Netronome Systems, Inc. */ #ifndef NFP_CRC32_H #define NFP_CRC32_H #include <linux/crc32.h> /** * crc32_posix_end() - Finalize POSIX CRC32 working state * @crc: Current CRC32 working state * @total_len: Total length of data that was CRC32'd * * Return: Final POSIX CRC32 value */ static inline u32 crc32_posix_end(u32 crc, size_t total_len) { /* Extend with the length of the string. */ while (total_len != 0) { u8 c = total_len & 0xff; crc = crc32_be(crc, &c, 1); total_len >>= 8; } return ~crc; } static inline u32 crc32_posix(const void *buff, size_t len) { return crc32_posix_end(crc32_be(0, buff, len), len); } #endif /* NFP_CRC32_H */