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| author | Tim Chen <tim.c.chen@linux.intel.com> | 2014-07-31 19:29:51 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-08-25 14:32:25 +0200 |
| commit | 1e65b81a90df50bf450193065cc9073b706b8dda (patch) | |
| tree | 6f55a2f93bbe0b9011e2bd0f13ea2167e9a3b2d3 /crypto/Kconfig | |
| parent | sched: Add function single_task_running to let a task check if it is the only... (diff) | |
| download | linux-1e65b81a90df50bf450193065cc9073b706b8dda.tar.xz linux-1e65b81a90df50bf450193065cc9073b706b8dda.zip | |
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/Kconfig | 30 |
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 |