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[/] [test_project/] [trunk/] [linux_sd_driver/] [include/] [linux/] [crc32.h] - Blame information for rev 81

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Line No. Rev Author Line
1 62 marcus.erl
/*
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 * crc32.h
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 * See linux/lib/crc32.c for license and changes
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 */
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#ifndef _LINUX_CRC32_H
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#define _LINUX_CRC32_H
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#include <linux/types.h>
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#include <linux/bitrev.h>
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extern u32  crc32_le(u32 crc, unsigned char const *p, size_t len);
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extern u32  crc32_be(u32 crc, unsigned char const *p, size_t len);
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#define crc32(seed, data, length)  crc32_le(seed, (unsigned char const *)data, length)
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/*
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 * Helpers for hash table generation of ethernet nics:
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 *
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 * Ethernet sends the least significant bit of a byte first, thus crc32_le
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 * is used. The output of crc32_le is bit reversed [most significant bit
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 * is in bit nr 0], thus it must be reversed before use. Except for
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 * nics that bit swap the result internally...
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 */
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#define ether_crc(length, data)    bitrev32(crc32_le(~0, data, length))
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#define ether_crc_le(length, data) crc32_le(~0, data, length)
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#endif /* _LINUX_CRC32_H */

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