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authorJussi Kivilinna <jussi.kivilinna@iki.fi>2013-04-13 13:46:50 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2013-04-25 21:09:05 +0800
commitcf1521a1a5e21fd1e79a458605c4282fbfbbeee2 (patch)
treea7c1fb6d047c75170ddadd0dffe40055167e9c02 /arch/x86/include/asm/crypto
parent604880107010a1e5794552d184cd5471ea31b973 (diff)
crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher
Patch adds AVX2/x86-64 implementation of Twofish cipher, requiring 16 parallel blocks for input (256 bytes). Table look-ups are performed using vpgatherdd instruction directly from vector registers and thus should be faster than earlier implementations. Implementation also uses 256-bit wide YMM registers, which should give additional speed up compared to the AVX implementation. 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.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/include/asm/crypto/twofish.h b/arch/x86/include/asm/crypto/twofish.h
index 878c51ceebb5..e655c6029b45 100644
--- a/arch/x86/include/asm/crypto/twofish.h
+++ b/arch/x86/include/asm/crypto/twofish.h
@@ -28,6 +28,20 @@ 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,
@@ -43,4 +57,8 @@ 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 */