| // SPDX-License-Identifier: GPL-2.0+ |
| * Copied from Linux kernel crypto/crc32c.c |
| * Copyright (c) 2004 Cisco Systems, Inc. |
| * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au> |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| uint32_t crc32c_cal(uint32_t crc, const char *data, int length, |
| crc = crc32c_table[(u8)(crc ^ *data++)] ^ (crc >> 8); |
| void crc32c_init(uint32_t *crc32c_table, uint32_t pol) |
| const uint32_t poly = pol; /* Bit-reflected CRC32C polynomial */ |
| for (i = 0; i < 256; i++) { |
| v = (v >> 1) ^ ((v & 1) ? poly : 0); |