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107778b592
linux/arch/x86/crypto
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Johannes Goetzfried 107778b592 crypto: twofish - add x86_64/avx assembler implementation 
This patch adds a x86_64/avx assembler implementation of the Twofish block
cipher. The implementation processes eight blocks in parallel (two 4 block
chunk AVX operations). The table-lookups are done in general-purpose registers.
For small blocksizes the 3way-parallel functions from the twofish-x86_64-3way
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)

twofish-avx-x86_64 vs. twofish-x86_64-3way
128bit key:                                             (lrw:256bit)    (xts:256bit)
size    ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec lrw-enc lrw-dec xts-enc xts-dec
16B     0.96x   0.97x   1.00x   0.95x   0.97x   0.97x   0.96x   0.95x   0.95x   0.98x
64B     0.99x   0.99x   1.00x   0.99x   0.98x   0.98x   0.99x   0.98x   0.99x   0.98x
256B    1.20x   1.21x   1.00x   1.19x   1.15x   1.14x   1.19x   1.20x   1.18x   1.19x
1024B   1.29x   1.30x   1.00x   1.28x   1.23x   1.24x   1.26x   1.28x   1.26x   1.27x
8192B   1.31x   1.32x   1.00x   1.31x   1.25x   1.25x   1.28x   1.29x   1.28x   1.30x

256bit key:                                             (lrw:384bit)    (xts:512bit)
size    ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec lrw-enc lrw-dec xts-enc xts-dec
16B     0.96x   0.96x   1.00x   0.96x   0.97x   0.98x   0.95x   0.95x   0.95x   0.96x
64B     1.00x   0.99x   1.00x   0.98x   0.98x   1.01x   0.98x   0.98x   0.98x   0.98x
256B    1.20x   1.21x   1.00x   1.21x   1.15x   1.15x   1.19x   1.20x   1.18x   1.19x
1024B   1.29x   1.30x   1.00x   1.28x   1.23x   1.23x   1.26x   1.27x   1.26x   1.27x
8192B   1.31x   1.33x   1.00x   1.31x   1.26x   1.26x   1.29x   1.29x   1.28x   1.30x

twofish-avx-x86_64 vs aes-asm (8kB block):
         128bit  256bit
ecb-enc  1.19x   1.63x
ecb-dec  1.18x   1.62x
cbc-enc  0.75x   1.03x
cbc-dec  1.23x   1.67x
ctr-enc  1.24x   1.65x
ctr-dec  1.24x   1.65x
lrw-enc  1.15x   1.53x
lrw-dec  1.14x   1.52x
xts-enc  1.16x   1.56x
xts-dec  1.16x   1.56x

Signed-off-by: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-06-12 16:46:07 +08:00
..
aes_glue.c Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
aes-i586-asm_32.S
aes-x86_64-asm_64.S
aesni-intel_asm.S crypto: aesni-intel - fix unaligned cbc decrypt for x86-32 2012-05-31 20:53:22 +10:00
aesni-intel_glue.c crypto: aesni-intel - move more common code to ablk_init_common 2012-05-15 17:25:33 +10:00
blowfish_glue.c crypto: blowfish-x86_64 - set alignmask to zero 2012-02-25 17:20:24 +08:00
blowfish-x86_64-asm_64.S crypto: blowfish-x86_64 - improve x86_64 blowfish 4-way performance 2011-10-21 14:23:07 +02:00
camellia_glue.c crypto: camellia-x86_64 - module init/exit functions should be static 2012-03-22 09:17:44 +08:00
camellia-x86_64-asm_64.S crypto: camellia - add assembler implementation for x86_64 2012-03-14 17:25:56 +08:00
crc32c-intel.c crypto: Add support for x86 cpuid auto loading for x86 crypto drivers 2012-01-26 16:48:10 -08:00
fpu.c crypto: aesni-intel - Merge with fpu.ko 2011-05-16 15:12:47 +10:00
ghash-clmulni-intel_asm.S
ghash-clmulni-intel_glue.c crypto: Add support for x86 cpuid auto loading for x86 crypto drivers 2012-01-26 16:48:10 -08:00
Makefile crypto: twofish - add x86_64/avx assembler implementation 2012-06-12 16:46:07 +08:00
salsa20_glue.c
salsa20-i586-asm_32.S
salsa20-x86_64-asm_64.S
serpent_sse2_glue.c crypto: serpent-sse2 - combine ablk_*_init functions 2012-02-25 17:20:23 +08:00
serpent-sse2-i586-asm_32.S crypto: serpent-sse2 - change transpose_4x4 to only use integer instructions 2012-01-13 16:38:40 +11:00
serpent-sse2-x86_64-asm_64.S crypto: serpent-sse2 - change transpose_4x4 to only use integer instructions 2012-01-13 16:38:40 +11:00
sha1_ssse3_asm.S crypto: sha1 - use Kbuild supplied flags for AVX test 2012-06-12 16:37:16 +08:00
sha1_ssse3_glue.c crypto: sha1 - use Kbuild supplied flags for AVX test 2012-06-12 16:37:16 +08:00
twofish_avx_glue.c crypto: twofish - add x86_64/avx assembler implementation 2012-06-12 16:46:07 +08:00
twofish_glue_3way.c crypto: twofish - add x86_64/avx assembler implementation 2012-06-12 16:46:07 +08:00
twofish_glue.c crypto: twofish-x86_64/i586 - set alignmask to zero 2012-02-25 17:20:24 +08:00
twofish-avx-x86_64-asm_64.S crypto: twofish - add x86_64/avx assembler implementation 2012-06-12 16:46:07 +08:00
twofish-i586-asm_32.S crypto: twofish-x86-asm - make assembler functions use twofish_ctx instead of crypto_tfm 2011-10-21 14:23:08 +02:00
twofish-x86_64-asm_64-3way.S crypto: twofish - add 3-way parallel x86_64 assembler implemention 2011-10-21 14:23:08 +02:00
twofish-x86_64-asm_64.S crypto: twofish-x86-asm - make assembler functions use twofish_ctx instead of crypto_tfm 2011-10-21 14:23:08 +02:00