[PATCH 2/6] crypto: sha512-mb - Enable SHA512 multibuffer support

Megha Dey
2016-06-27T17:15:58Z

Add the config CRYPTO_SHA512_MB which will enable the computation
using the SHA512 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>
---
crypto/Kconfig | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index d8cc0f0..62fcbb9 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -720,6 +720,22 @@ config CRYPTO_SHA256_MB
lanes remain unfilled, a flush operation will be initiated to
process the crypto jobs, adding a slight latency.

+config CRYPTO_SHA512_MB
+ tristate "SHA512 digest algorithm (x86_64 Multi-Buffer, Experimental)"
+ depends on X86 && 64BIT
+ select CRYPTO_SHA512
+ select CRYPTO_HASH
+ select CRYPTO_MCRYPTD
+ help
+ SHA-512 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
tristate "SHA224 and SHA256 digest algorithm"
select CRYPTO_HASH
--
1.9.1