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| author | Megha Dey <megha.dey@intel.com> | 2016-06-23 18:40:43 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-06-27 16:57:43 +0800 |
| commit | 9be7e24483998fa6a34c2b191c4798b8189f8f9e (patch) | |
| tree | 7a78f7f58e768469a9fefc2048cf33ab044f1db7 /crypto/Kconfig | |
| parent | f876f440df3973ab7f1d20e3d34d000fc9422a78 (diff) | |
| download | lwn-9be7e24483998fa6a34c2b191c4798b8189f8f9e.tar.gz lwn-9be7e24483998fa6a34c2b191c4798b8189f8f9e.zip | |
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/Kconfig | 16 |
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 |