From: Huang Ying <ying.huang@intel.com>
Date: Wed, 10 Mar 2010 10:28:55 +0000 (+0800)
Subject: crypto: aesni-intel - Add AES-NI accelerated CTR mode
X-Git-Tag: v2.6.35-rc1~446^2~45
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12387a46bb150f5608de4aa9a90dfdddbf991e3f;p=pandora-kernel.git

crypto: aesni-intel - Add AES-NI accelerated CTR mode

To take advantage of the hardware pipeline implementation of AES-NI
instructions. CTR mode cryption is implemented in ASM to schedule
multiple AES-NI instructions one after another. This way, some latency
of AES-NI instruction can be eliminated.

Performance testing based on dm-crypt should 50% reduction of
ecryption/decryption time.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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