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crypto: sha256-mb - Enable multibuffer support 

Add the config CRYPTO_SHA256_MB which will enable the computation using the
SHA256 multi-buffer algorithm.

Signed-off-by: Megha Dey <megha.dey@linux.intel.com>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Megha Dey 2016-06-23 18:40:43 -07:00 committed by Herbert Xu
parent f876f440df
commit 9be7e24483
1 changed files with 16 additions and 0 deletions
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16
crypto/Kconfig
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@ -704,6 +704,22 @@ config CRYPTO_SHA1_MB
lanes remain unfilled, a flush operation will be initiated to lanes remain unfilled, a flush operation will be initiated to
process the crypto jobs, adding a slight latency. process the crypto jobs, adding a slight latency.
config CRYPTO_SHA256_MB
tristate "SHA256 digest algorithm (x86_64 Multi-Buffer, Experimental)"
depends on X86 && 64BIT
select CRYPTO_SHA256
select CRYPTO_HASH
select CRYPTO_MCRYPTD
help
SHA-256 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
using multi-buffer technique. This algorithm computes on
multiple data lanes concurrently with SIMD instructions for
better throughput. It should not be enabled by default but
used when there is significant amount of work to keep the keep
the data lanes filled to get performance benefit. If the data
lanes remain unfilled, a flush operation will be initiated to
process the crypto jobs, adding a slight latency.
config CRYPTO_SHA256 config CRYPTO_SHA256
tristate "SHA224 and SHA256 digest algorithm" tristate "SHA224 and SHA256 digest algorithm"
select CRYPTO_HASH select CRYPTO_HASH