| /* |
| * crc32.h |
| * See linux/lib/crc32.c for license and changes |
| */ |
| #ifndef _LINUX_CRC32_H |
| #define _LINUX_CRC32_H |
| |
| #include <linux/types.h> |
| /* #include <linux/bitrev.h> */ |
| |
| extern u32 crc32_le(u32 crc, unsigned char const *p, size_t len); |
| /* extern u32 crc32_be(u32 crc, unsigned char const *p, size_t len); */ |
| |
| #define crc32(seed, data, length) crc32_le(seed, (unsigned char const *)data, length) |
| |
| /* |
| * Helpers for hash table generation of ethernet nics: |
| * |
| * Ethernet sends the least significant bit of a byte first, thus crc32_le |
| * is used. The output of crc32_le is bit reversed [most significant bit |
| * is in bit nr 0], thus it must be reversed before use. Except for |
| * nics that bit swap the result internally... |
| */ |
| /* #define ether_crc(length, data) bitrev32(crc32_le(~0, data, length)) */ |
| /* #define ether_crc_le(length, data) crc32_le(~0, data, length) */ |
| |
| #endif /* _LINUX_CRC32_H */ |