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authorTim Chen <tim.c.chen@linux.intel.com>2014-07-31 21:29:51 +0400
committerHerbert Xu <herbert@gondor.apana.org.au>2014-08-25 16:32:25 +0400
commit1e65b81a90df50bf450193065cc9073b706b8dda (patch)
tree6f55a2f93bbe0b9011e2bd0f13ea2167e9a3b2d3 /crypto/Kconfig
parent2ee507c472939db4b146d545352b8a7c79ef47f8 (diff)
downloadlinux-1e65b81a90df50bf450193065cc9073b706b8dda.tar.xz
crypto: sha-mb - multibuffer crypto infrastructure
This patch introduces the multi-buffer crypto daemon which is responsible for submitting crypto jobs in a work queue to the responsible multi-buffer crypto algorithm. The idea of the multi-buffer algorihtm is to put data streams from multiple jobs in a wide (AVX2) register and then take advantage of SIMD instructions to do crypto computation on several buffers simultaneously. The multi-buffer crypto daemon is also responsbile for flushing the remaining buffers to complete the computation if no new buffers arrive for a while. Signed-off-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/Kconfig30
1 files changed, 30 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 00b5906f57b7..86dc81f80bc5 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -158,6 +158,20 @@ config CRYPTO_CRYPTD
converts an arbitrary synchronous software crypto algorithm
into an asynchronous algorithm that executes in a kernel thread.
+config CRYPTO_MCRYPTD
+ tristate "Software async multi-buffer crypto daemon"
+ select CRYPTO_BLKCIPHER
+ select CRYPTO_HASH
+ select CRYPTO_MANAGER
+ select CRYPTO_WORKQUEUE
+ help
+ This is a generic software asynchronous crypto daemon that
+ provides the kernel thread to assist multi-buffer crypto
+ algorithms for submitting jobs and flushing jobs in multi-buffer
+ crypto algorithms. Multi-buffer crypto algorithms are executed
+ in the context of this kernel thread and drivers can post
+ their crypto request asyncrhously and process by this daemon.
+
config CRYPTO_AUTHENC
tristate "Authenc support"
select CRYPTO_AEAD
@@ -559,6 +573,22 @@ config CRYPTO_SHA1_PPC
This is the powerpc hardware accelerated implementation of the
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
+config CRYPTO_SHA1_MB
+ tristate "SHA1 digest algorithm (x86_64 Multi-Buffer, Experimental)"
+ depends on X86 && 64BIT
+ select CRYPTO_SHA1
+ select CRYPTO_HASH
+ select CRYPTO_MCRYPTD
+ help
+ SHA-1 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