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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-06-08 12:17:47 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-06-21 14:44:29 +0800 |
| commit | 99f42f937a080995b34e1ed75ed6934b5f96f9ca (patch) | |
| tree | 1a9c3482104dd4d99dfc1b839c02678b6a550a53 /arch/x86/include/asm/crypto | |
| parent | 3d387ef08c40382315b8e9baa4bc9a07f7c49fce (diff) | |
| download | linux-0-day-99f42f937a080995b34e1ed75ed6934b5f96f9ca.tar.gz linux-0-day-99f42f937a080995b34e1ed75ed6934b5f96f9ca.tar.xz | |
Revert "crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher"
This reverts commit cf1521a1a5e21fd1e79a458605c4282fbfbbeee2.
Instruction (vpgatherdd) that this implementation relied on turned out to be
slow performer on real hardware (i5-4570). The previous 8-way twofish/AVX
implementation is therefore faster and this implementation should be removed.
Converting this implementation to use the same method as in twofish/AVX for
table look-ups would give additional ~3% speed up vs twofish/AVX, but would
hardly be worth of the added code and binary size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/include/asm/crypto')
| -rw-r--r-- | arch/x86/include/asm/crypto/twofish.h | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/arch/x86/include/asm/crypto/twofish.h b/arch/x86/include/asm/crypto/twofish.h index e655c6029b453..878c51ceebb57 100644 --- a/arch/x86/include/asm/crypto/twofish.h +++ b/arch/x86/include/asm/crypto/twofish.h @@ -28,20 +28,6 @@ asmlinkage void __twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst, asmlinkage void twofish_dec_blk_3way(struct twofish_ctx *ctx, u8 *dst, const u8 *src); -/* 8-way parallel cipher functions */ -asmlinkage void twofish_ecb_enc_8way(struct twofish_ctx *ctx, u8 *dst, - const u8 *src); -asmlinkage void twofish_ecb_dec_8way(struct twofish_ctx *ctx, u8 *dst, - const u8 *src); -asmlinkage void twofish_cbc_dec_8way(struct twofish_ctx *ctx, u8 *dst, - const u8 *src); -asmlinkage void twofish_ctr_8way(struct twofish_ctx *ctx, u8 *dst, - const u8 *src, le128 *iv); -asmlinkage void twofish_xts_enc_8way(struct twofish_ctx *ctx, u8 *dst, - const u8 *src, le128 *iv); -asmlinkage void twofish_xts_dec_8way(struct twofish_ctx *ctx, u8 *dst, - const u8 *src, le128 *iv); - /* helpers from twofish_x86_64-3way module */ extern void twofish_dec_blk_cbc_3way(void *ctx, u128 *dst, const u128 *src); extern void twofish_enc_blk_ctr(void *ctx, u128 *dst, const u128 *src, @@ -57,8 +43,4 @@ extern void lrw_twofish_exit_tfm(struct crypto_tfm *tfm); extern int xts_twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen); -/* helpers from twofish-avx module */ -extern void twofish_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv); -extern void twofish_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv); - #endif /* ASM_X86_TWOFISH_H */ |