diff options
| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-04-13 14:46:45 +0400 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-04-25 17:09:04 +0400 |
| commit | 604880107010a1e5794552d184cd5471ea31b973 (patch) | |
| tree | ed37e3b3e8454f758daab88a2fb9cb5f043ca8ad /arch/x86/include | |
| parent | ad8b7c3e92868dd86c54d9d5321000bbb4096f0d (diff) | |
| download | linux-604880107010a1e5794552d184cd5471ea31b973.tar.xz | |
crypto: blowfish - add AVX2/x86_64 implementation of blowfish cipher
Patch adds AVX2/x86-64 implementation of Blowfish cipher, requiring 32 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.
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')
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/crypto/blowfish.h | 43 |
2 files changed, 44 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 93fe929d1cee..1243272605aa 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -278,6 +278,7 @@ extern const char * const x86_power_flags[32]; #define cpu_has_ssse3 boot_cpu_has(X86_FEATURE_SSSE3) #define cpu_has_aes boot_cpu_has(X86_FEATURE_AES) #define cpu_has_avx boot_cpu_has(X86_FEATURE_AVX) +#define cpu_has_avx2 boot_cpu_has(X86_FEATURE_AVX2) #define cpu_has_ht boot_cpu_has(X86_FEATURE_HT) #define cpu_has_mp boot_cpu_has(X86_FEATURE_MP) #define cpu_has_nx boot_cpu_has(X86_FEATURE_NX) diff --git a/arch/x86/include/asm/crypto/blowfish.h b/arch/x86/include/asm/crypto/blowfish.h new file mode 100644 index 000000000000..f097b2face10 --- /dev/null +++ b/arch/x86/include/asm/crypto/blowfish.h @@ -0,0 +1,43 @@ +#ifndef ASM_X86_BLOWFISH_H +#define ASM_X86_BLOWFISH_H + +#include <linux/crypto.h> +#include <crypto/blowfish.h> + +#define BF_PARALLEL_BLOCKS 4 + +/* regular block cipher functions */ +asmlinkage void __blowfish_enc_blk(struct bf_ctx *ctx, u8 *dst, const u8 *src, + bool xor); +asmlinkage void blowfish_dec_blk(struct bf_ctx *ctx, u8 *dst, const u8 *src); + +/* 4-way parallel cipher functions */ +asmlinkage void __blowfish_enc_blk_4way(struct bf_ctx *ctx, u8 *dst, + const u8 *src, bool xor); +asmlinkage void blowfish_dec_blk_4way(struct bf_ctx *ctx, u8 *dst, + const u8 *src); + +static inline void blowfish_enc_blk(struct bf_ctx *ctx, u8 *dst, const u8 *src) +{ + __blowfish_enc_blk(ctx, dst, src, false); +} + +static inline void blowfish_enc_blk_xor(struct bf_ctx *ctx, u8 *dst, + const u8 *src) +{ + __blowfish_enc_blk(ctx, dst, src, true); +} + +static inline void blowfish_enc_blk_4way(struct bf_ctx *ctx, u8 *dst, + const u8 *src) +{ + __blowfish_enc_blk_4way(ctx, dst, src, false); +} + +static inline void blowfish_enc_blk_xor_4way(struct bf_ctx *ctx, u8 *dst, + const u8 *src) +{ + __blowfish_enc_blk_4way(ctx, dst, src, true); +} + +#endif |