diff options
| author | Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | 2012-10-20 16:06:51 +0400 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2012-10-24 17:10:55 +0400 |
| commit | facd416fbc1cdee357730909a414898934f16ae1 (patch) | |
| tree | e590e4bdd151c06c820bdcc1635b0660e525f84d /arch/x86/include/asm/crypto | |
| parent | 8435a3c3003c00c43f1b267368bbe1d8dada35d1 (diff) | |
| download | linux-facd416fbc1cdee357730909a414898934f16ae1.tar.xz | |
crypto: serpent/avx - avoid using temporary stack buffers
Introduce new assembler functions to avoid use temporary stack buffers in glue
code. This also allows use of vector instructions for xoring output in CTR and
CBC modes and construction of IVs for CTR mode.
ECB mode sees ~0.5% decrease in speed because added one extra function
call. CBC mode decryption and CTR mode benefit from vector operations
and gain ~3%.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.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/serpent-avx.h | 27 |
1 files changed, 7 insertions, 20 deletions
diff --git a/arch/x86/include/asm/crypto/serpent-avx.h b/arch/x86/include/asm/crypto/serpent-avx.h index 432deedd2945..0da1d3e2a55c 100644 --- a/arch/x86/include/asm/crypto/serpent-avx.h +++ b/arch/x86/include/asm/crypto/serpent-avx.h @@ -6,27 +6,14 @@ #define SERPENT_PARALLEL_BLOCKS 8 -asmlinkage void __serpent_enc_blk_8way_avx(struct serpent_ctx *ctx, u8 *dst, - const u8 *src, bool xor); -asmlinkage void serpent_dec_blk_8way_avx(struct serpent_ctx *ctx, u8 *dst, +asmlinkage void serpent_ecb_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst, + const u8 *src); +asmlinkage void serpent_ecb_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst, const u8 *src); -static inline void serpent_enc_blk_xway(struct serpent_ctx *ctx, u8 *dst, - const u8 *src) -{ - __serpent_enc_blk_8way_avx(ctx, dst, src, false); -} - -static inline void serpent_enc_blk_xway_xor(struct serpent_ctx *ctx, u8 *dst, - const u8 *src) -{ - __serpent_enc_blk_8way_avx(ctx, dst, src, true); -} - -static inline void serpent_dec_blk_xway(struct serpent_ctx *ctx, u8 *dst, - const u8 *src) -{ - serpent_dec_blk_8way_avx(ctx, dst, src); -} +asmlinkage void serpent_cbc_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst, + const u8 *src); +asmlinkage void serpent_ctr_8way_avx(struct serpent_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); #endif |