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authorBenny Halevy <bhalevy@fs1.bhalevy.com>2007-11-08 13:34:09 (GMT)
committerHerbert Xu <herbert@gondor.apana.org.au>2007-11-08 13:34:09 (GMT)
commitef19454bd437b2ba14c9cda1de85debd9f383484 (patch)
tree842280a85e54d735bf31e1bba17e6fc88c990df0 /lib/libcrc32c.c
parentdbeeb816e805091e7cfc03baf36dc40b4adb2bbd (diff)
[LIB] crc32c: Keep intermediate crc state in cpu order
crypto/crc32.c:chksum_final() is computing the digest as *(__le32 *)out = ~cpu_to_le32(mctx->crc); so the low-level crc32c_le routines should just keep the crc in cpu order, otherwise it is getting swabbed one too many times on big-endian machines. Signed-off-by: Benny Halevy <bhalevy@fs1.bhalevy.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'lib/libcrc32c.c')
-rw-r--r--lib/libcrc32c.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/lib/libcrc32c.c b/lib/libcrc32c.c
index 802f11f..b5c3287 100644
--- a/lib/libcrc32c.c
+++ b/lib/libcrc32c.c
@@ -33,7 +33,6 @@
#include <linux/crc32c.h>
#include <linux/compiler.h>
#include <linux/module.h>
-#include <asm/byteorder.h>
MODULE_AUTHOR("Clay Haapala <chaapala@cisco.com>");
MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations");
@@ -161,15 +160,13 @@ static const u32 crc32c_table[256] = {
*/
u32 __pure
-crc32c_le(u32 seed, unsigned char const *data, size_t length)
+crc32c_le(u32 crc, unsigned char const *data, size_t length)
{
- u32 crc = __cpu_to_le32(seed);
-
while (length--)
crc =
crc32c_table[(crc ^ *data++) & 0xFFL] ^ (crc >> 8);
- return __le32_to_cpu(crc);
+ return crc;
}
#endif /* CRC_LE_BITS == 8 */

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