tree 123ed7322996e4e4a6922791d6e3a674ffc05cba
parent 5c22ba6619796da82ea0aa18c72caf4fe003a329
author Alexander Boyko <alexander_boyko@xyratex.com> 1357829699 +0400
committer Herbert Xu <herbert@gondor.apana.org.au> 1358637405 +1100

crypto: crc32 - add crc32 pclmulqdq implementation and wrappers for table implementation

This patch adds crc32 algorithms to shash crypto api. One is wrapper to
gerneric crc32_le function. Second is crc32 pclmulqdq implementation. It
use hardware provided PCLMULQDQ instruction to accelerate the CRC32 disposal.
This instruction present from Intel Westmere and AMD Bulldozer CPUs.

For intel core i5 I got 450MB/s for table implementation and 2100MB/s
for pclmulqdq implementation.

Signed-off-by: Alexander Boyko <alexander_boyko@xyratex.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>