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authorJussi Kivilinna <jussi.kivilinna@mbnet.fi>2011-09-02 01:45:22 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2011-09-22 21:25:26 +1000
commit64b94ceae8c16cd1b2800cac83112d3815be5250 (patch)
treec7e3384659522cac32dc85a34e4ed722346a0f91 /crypto
parent7d47b86cfef808c6580b7603c3f17fcaf27e9d14 (diff)
downloadlinux-stericsson-64b94ceae8c16cd1b2800cac83112d3815be5250.tar.gz
crypto: blowfish - add x86_64 assembly implementation
Patch adds x86_64 assembly implementation of blowfish. Two set of assembler functions are provided. First set is regular 'one-block at time' encrypt/decrypt functions. Second is 'four-block at time' functions that gain performance increase on out-of-order CPUs. Performance of 4-way functions should be equal to 1-way functions with in-order CPUs. Summary of the tcrypt benchmarks: Blowfish assembler vs blowfish C (256bit 8kb block ECB) encrypt: 2.2x speed decrypt: 2.3x speed Blowfish assembler vs blowfish C (256bit 8kb block CBC) encrypt: 1.12x speed decrypt: 2.5x speed Blowfish assembler vs blowfish C (256bit 8kb block CTR) encrypt: 2.5x speed Full output: http://koti.mbnet.fi/axh/kernel/crypto/tcrypt-speed-blowfish-asm-x86_64.txt http://koti.mbnet.fi/axh/kernel/crypto/tcrypt-speed-blowfish-c-x86_64.txt Tests were run on: vendor_id : AuthenticAMD cpu family : 16 model : 10 model name : AMD Phenom(tm) II X6 1055T Processor stepping : 0 Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/Kconfig15
1 files changed, 15 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 108cb98e2170..07637745e234 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -620,6 +620,21 @@ config CRYPTO_BLOWFISH_COMMON
See also:
<http://www.schneier.com/blowfish.html>
+config CRYPTO_BLOWFISH_X86_64
+ tristate "Blowfish cipher algorithm (x86_64)"
+ depends on (X86 || UML_X86) && 64BIT
+ select CRYPTO_ALGAPI
+ select CRYPTO_BLOWFISH_COMMON
+ help
+ Blowfish cipher algorithm (x86_64), by Bruce Schneier.
+
+ This is a variable key length cipher which can use keys from 32
+ bits to 448 bits in length. It's fast, simple and specifically
+ designed for use on "large microprocessors".
+
+ See also:
+ <http://www.schneier.com/blowfish.html>
+
config CRYPTO_CAMELLIA
tristate "Camellia cipher algorithms"
depends on CRYPTO