crypto: des_3des - add x86-64 assembly implementation
authorJussi Kivilinna <jussi.kivilinna@iki.fi>
Mon, 9 Jun 2014 17:59:54 +0000 (20:59 +0300)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 20 Jun 2014 13:27:58 +0000 (21:27 +0800)
commit6574e6c64e971c9adb629e81e497afdb52b1c9df
treeacfe43924f1dd49e686508b4359eccf4d857bbef
parent87131507e1a60c4803d54816b86091490b67ad68
crypto: des_3des - add x86-64 assembly implementation

Patch adds x86_64 assembly implementation of Triple DES EDE cipher algorithm.
Two assembly implementations are provided. First is regular 'one-block at
time' encrypt/decrypt function. Second is 'three-blocks at time' function that
gains performance increase on out-of-order CPUs.

tcrypt test results:

Intel Core i5-4570:

des3_ede-asm vs des3_ede-generic:
size    ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec
16B     1.21x   1.22x   1.27x   1.36x   1.25x   1.25x
64B     1.98x   1.96x   1.23x   2.04x   2.01x   2.00x
256B    2.34x   2.37x   1.21x   2.40x   2.38x   2.39x
1024B   2.50x   2.47x   1.22x   2.51x   2.52x   2.51x
8192B   2.51x   2.53x   1.21x   2.56x   2.54x   2.55x

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
arch/x86/crypto/Makefile
arch/x86/crypto/des3_ede-asm_64.S [new file with mode: 0644]
arch/x86/crypto/des3_ede_glue.c [new file with mode: 0644]
crypto/Kconfig
crypto/des_generic.c
include/crypto/des.h