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crypto: crct10dif - Glue code to cast accelerated CRCT10DIF assembly as a crypto transform

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Glue code that plugs the PCLMULQDQ accelerated CRC T10 DIF hash into the
crypto framework.  The config CRYPTO_CRCT10DIF_PCLMUL should be turned
on to enable the feature.  The crc_t10dif crypto library function will
use this faster algorithm when crct10dif_pclmul module is loaded.

Signed-off-by: Tim Chen <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Tim Chen 2013-05-01 12:52:50 -07:00 • committed by Herbert Xu
commit 0b95a7f857
3 changed files with 164 additions and 0 deletions
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11
crypto/Kconfig
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@ -384,6 +384,17 @@ config CRYPTO_CRCT10DIF
a crypto transform. This allows for faster crc t10 diff
transforms to be used if they are available.
config CRYPTO_CRCT10DIF_PCLMUL
tristate "CRCT10DIF PCLMULQDQ hardware acceleration"
depends on X86 && 64BIT && CRC_T10DIF
select CRYPTO_HASH
help
For x86_64 processors with SSE4.2 and PCLMULQDQ supported,
CRC T10 DIF PCLMULQDQ computation can be hardware
accelerated PCLMULQDQ instruction. This option will create
'crct10dif-plcmul' module, which is faster when computing the
crct10dif checksum as compared with the generic table implementation.
config CRYPTO_GHASH
tristate "GHASH digest algorithm"
select CRYPTO_GF128MUL