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authorMegha Dey <megha.dey@intel.com>2016-06-23 18:40:43 -0700
committerHerbert Xu <herbert@gondor.apana.org.au>2016-06-27 16:57:43 +0800
commit9be7e24483998fa6a34c2b191c4798b8189f8f9e (patch)
tree7a78f7f58e768469a9fefc2048cf33ab044f1db7 /crypto/Kconfig
parentf876f440df3973ab7f1d20e3d34d000fc9422a78 (diff)
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>
Diffstat (limited to 'crypto/Kconfig')
-rw-r--r--crypto/Kconfig16
1 files changed, 16 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 5baaa9d87574..d8cc0f085278 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -704,6 +704,22 @@ config CRYPTO_SHA1_MB
lanes remain unfilled, a flush operation will be initiated to
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
tristate "SHA224 and SHA256 digest algorithm"
select CRYPTO_HASH