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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/crypto/twofish_avx_glue.c
parent604880107010a1e5794552d184cd5471ea31b973 (diff)
downloadop-kernel-dev-cf1521a1a5e21fd1e79a458605c4282fbfbbeee2.zip
op-kernel-dev-cf1521a1a5e21fd1e79a458605c4282fbfbbeee2.tar.gz
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/crypto/twofish_avx_glue.c')
-rw-r--r--arch/x86/crypto/twofish_avx_glue.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/x86/crypto/twofish_avx_glue.c b/arch/x86/crypto/twofish_avx_glue.c
index a62ba54..2047a56 100644
--- a/arch/x86/crypto/twofish_avx_glue.c
+++ b/arch/x86/crypto/twofish_avx_glue.c
@@ -50,18 +50,26 @@
/* 8-way parallel cipher functions */
asmlinkage void twofish_ecb_enc_8way(struct twofish_ctx *ctx, u8 *dst,
const u8 *src);
+EXPORT_SYMBOL_GPL(twofish_ecb_enc_8way);
+
asmlinkage void twofish_ecb_dec_8way(struct twofish_ctx *ctx, u8 *dst,
const u8 *src);
+EXPORT_SYMBOL_GPL(twofish_ecb_dec_8way);
asmlinkage void twofish_cbc_dec_8way(struct twofish_ctx *ctx, u8 *dst,
const u8 *src);
+EXPORT_SYMBOL_GPL(twofish_cbc_dec_8way);
+
asmlinkage void twofish_ctr_8way(struct twofish_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
+EXPORT_SYMBOL_GPL(twofish_ctr_8way);
asmlinkage void twofish_xts_enc_8way(struct twofish_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
+EXPORT_SYMBOL_GPL(twofish_xts_enc_8way);
asmlinkage void twofish_xts_dec_8way(struct twofish_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
+EXPORT_SYMBOL_GPL(twofish_xts_dec_8way);
static inline void twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst,
const u8 *src)
@@ -69,17 +77,19 @@ static inline void twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst,
__twofish_enc_blk_3way(ctx, dst, src, false);
}
-static void twofish_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv)
+void twofish_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv)
{
glue_xts_crypt_128bit_one(ctx, dst, src, iv,
GLUE_FUNC_CAST(twofish_enc_blk));
}
+EXPORT_SYMBOL_GPL(twofish_xts_enc);
-static void twofish_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv)
+void twofish_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv)
{
glue_xts_crypt_128bit_one(ctx, dst, src, iv,
GLUE_FUNC_CAST(twofish_dec_blk));
}
+EXPORT_SYMBOL_GPL(twofish_xts_dec);
static const struct common_glue_ctx twofish_enc = {
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