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authorJussi Kivilinna <jussi.kivilinna@mbnet.fi>2012-10-20 15:06:51 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2012-10-24 21:10:55 +0800
commitfacd416fbc1cdee357730909a414898934f16ae1 (patch)
treee590e4bdd151c06c820bdcc1635b0660e525f84d /arch/x86/include/asm/crypto
parent8435a3c3003c00c43f1b267368bbe1d8dada35d1 (diff)
downloadlinux-facd416fbc1cdee357730909a414898934f16ae1.tar.gz
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.h27
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 432deedd294..0da1d3e2a55 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