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