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authorJohannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>2012-07-11 19:37:37 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2012-08-01 17:47:30 +0800
commit4d6d6a2c850f89bc9283d02519cb536baba72032 (patch)
tree8433747260d88000d79849bcd4db0e56b86aa6e4 /crypto/Kconfig
parenta2c5826095562983bf316e3a7eb137ef04a71a24 (diff)
downloadlinux-linaro-stable-4d6d6a2c850f89bc9283d02519cb536baba72032.tar.gz
crypto: cast5 - add x86_64/avx assembler implementation
This patch adds a x86_64/avx assembler implementation of the Cast5 block cipher. The implementation processes sixteen blocks in parallel (four 4 block chunk AVX operations). The table-lookups are done in general-purpose registers. For small blocksizes the functions from the generic module are called. A good performance increase is provided for blocksizes greater or equal to 128B. Patch has been tested with tcrypt and automated filesystem tests. Tcrypt benchmark results: Intel Core i5-2500 CPU (fam:6, model:42, step:7) cast5-avx-x86_64 vs. cast5-generic 64bit key: size ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec 16B 0.99x 0.99x 1.00x 1.00x 1.02x 1.01x 64B 1.00x 1.00x 0.98x 1.00x 1.01x 1.02x 256B 2.03x 2.01x 0.95x 2.11x 2.12x 2.13x 1024B 2.30x 2.24x 0.95x 2.29x 2.35x 2.35x 8192B 2.31x 2.27x 0.95x 2.31x 2.39x 2.39x 128bit key: size ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec 16B 0.99x 0.99x 1.00x 1.00x 1.01x 1.01x 64B 1.00x 1.00x 0.98x 1.01x 1.02x 1.01x 256B 2.17x 2.13x 0.96x 2.19x 2.19x 2.19x 1024B 2.29x 2.32x 0.95x 2.34x 2.37x 2.38x 8192B 2.35x 2.32x 0.95x 2.35x 2.39x 2.39x Signed-off-by: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/Kconfig')
-rw-r--r--crypto/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index a3238051b03e..cda97fcaa822 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -692,6 +692,20 @@ config CRYPTO_CAST5
The CAST5 encryption algorithm (synonymous with CAST-128) is
described in RFC2144.
+config CRYPTO_CAST5_AVX_X86_64
+ tristate "CAST5 (CAST-128) cipher algorithm (x86_64/AVX)"
+ depends on X86 && 64BIT
+ select CRYPTO_ALGAPI
+ select CRYPTO_CRYPTD
+ select CRYPTO_ABLK_HELPER_X86
+ select CRYPTO_CAST5
+ help
+ The CAST5 encryption algorithm (synonymous with CAST-128) is
+ described in RFC2144.
+
+ This module provides the Cast5 cipher algorithm that processes
+ sixteen blocks parallel using the AVX instruction set.
+
config CRYPTO_CAST6
tristate "CAST6 (CAST-256) cipher algorithm"
select CRYPTO_ALGAPI