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| author | Kim Phillips <kim.phillips@freescale.com> | 2009-01-21 18:38:51 -0600 |
|---|---|---|
| committer | Kim Phillips <kim.phillips@freescale.com> | 2009-01-21 18:38:51 -0600 |
| commit | be4880ebe4355e8782be4af4b337a1b98dffcbe3 (patch) | |
| tree | 8b699181073305221b95f338a2d9107ab1bbfa3f /include/linux/crc32.h | |
| parent | 633639587e3596f0dbf5e6247dd3faf80b1d9063 (diff) | |
| parent | 72d15e705bc3983884105cb7755c7ba80e74a0a5 (diff) | |
| download | u-boot-imx-be4880ebe4355e8782be4af4b337a1b98dffcbe3.zip u-boot-imx-be4880ebe4355e8782be4af4b337a1b98dffcbe3.tar.gz u-boot-imx-be4880ebe4355e8782be4af4b337a1b98dffcbe3.tar.bz2 | |
Merge branch 'master' into next
Diffstat (limited to 'include/linux/crc32.h')
| -rw-r--r-- | include/linux/crc32.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/crc32.h b/include/linux/crc32.h new file mode 100644 index 0000000..ac4aed1 --- /dev/null +++ b/include/linux/crc32.h @@ -0,0 +1,27 @@ +/* + * 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 */ |