diff options
| -rw-r--r-- | arch/x86/crypto/Makefile | 2 | ||||
| -rw-r--r-- | arch/x86/crypto/serpent-avx2-asm_64.S | 800 | ||||
| -rw-r--r-- | arch/x86/crypto/serpent_avx2_glue.c | 562 | ||||
| -rw-r--r-- | arch/x86/crypto/serpent_avx_glue.c | 62 | ||||
| -rw-r--r-- | arch/x86/include/asm/crypto/serpent-avx.h | 24 | ||||
| -rw-r--r-- | crypto/Kconfig | 23 | ||||
| -rw-r--r-- | crypto/testmgr.c | 15 |
7 files changed, 1468 insertions, 20 deletions
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile index 1f6e0c2e914..a21af593ab8 100644 --- a/arch/x86/crypto/Makefile +++ b/arch/x86/crypto/Makefile @@ -43,6 +43,7 @@ endif # These modules require assembler to support AVX2. ifeq ($(avx2_supported),yes) obj-$(CONFIG_CRYPTO_BLOWFISH_AVX2_X86_64) += blowfish-avx2.o + obj-$(CONFIG_CRYPTO_SERPENT_AVX2_X86_64) += serpent-avx2.o obj-$(CONFIG_CRYPTO_TWOFISH_AVX2_X86_64) += twofish-avx2.o endif @@ -72,6 +73,7 @@ endif ifeq ($(avx2_supported),yes) blowfish-avx2-y := blowfish-avx2-asm_64.o blowfish_avx2_glue.o + serpent-avx2-y := serpent-avx2-asm_64.o serpent_avx2_glue.o twofish-avx2-y := twofish-avx2-asm_64.o twofish_avx2_glue.o endif diff --git a/arch/x86/crypto/serpent-avx2-asm_64.S b/arch/x86/crypto/serpent-avx2-asm_64.S new file mode 100644 index 00000000000..b222085ccca --- /dev/null +++ b/arch/x86/crypto/serpent-avx2-asm_64.S @@ -0,0 +1,800 @@ +/* + * x86_64/AVX2 assembler optimized version of Serpent + * + * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> + * + * Based on AVX assembler implementation of Serpent by: + * Copyright © 2012 Johannes Goetzfried + * <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include <linux/linkage.h> +#include "glue_helper-asm-avx2.S" + +.file "serpent-avx2-asm_64.S" + +.data +.align 16 + +.Lbswap128_mask: + .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 +.Lxts_gf128mul_and_shl1_mask_0: + .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 +.Lxts_gf128mul_and_shl1_mask_1: + .byte 0x0e, 1, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 + +.text + +#define CTX %rdi + +#define RNOT %ymm0 +#define tp %ymm1 + +#define RA1 %ymm2 +#define RA2 %ymm3 +#define RB1 %ymm4 +#define RB2 %ymm5 +#define RC1 %ymm6 +#define RC2 %ymm7 +#define RD1 %ymm8 +#define RD2 %ymm9 +#define RE1 %ymm10 +#define RE2 %ymm11 + +#define RK0 %ymm12 +#define RK1 %ymm13 +#define RK2 %ymm14 +#define RK3 %ymm15 + +#define RK0x %xmm12 +#define RK1x %xmm13 +#define RK2x %xmm14 +#define RK3x %xmm15 + +#define S0_1(x0, x1, x2, x3, x4) \ + vpor x0, x3, tp; \ + vpxor x3, x0, x0; \ + vpxor x2, x3, x4; \ + vpxor RNOT, x4, x4; \ + vpxor x1, tp, x3; \ + vpand x0, x1, x1; \ + vpxor x4, x1, x1; \ + vpxor x0, x2, x2; +#define S0_2(x0, x1, x2, x3, x4) \ + vpxor x3, x0, x0; \ + vpor x0, x4, x4; \ + vpxor x2, x0, x0; \ + vpand x1, x2, x2; \ + vpxor x2, x3, x3; \ + vpxor RNOT, x1, x1; \ + vpxor x4, x2, x2; \ + vpxor x2, x1, x1; + +#define S1_1(x0, x1, x2, x3, x4) \ + vpxor x0, x1, tp; \ + vpxor x3, x0, x0; \ + vpxor RNOT, x3, x3; \ + vpand tp, x1, x4; \ + vpor tp, x0, x0; \ + vpxor x2, x3, x3; \ + vpxor x3, x0, x0; \ + vpxor x3, tp, x1; +#define S1_2(x0, x1, x2, x3, x4) \ + vpxor x4, x3, x3; \ + vpor x4, x1, x1; \ + vpxor x2, x4, x4; \ + vpand x0, x2, x2; \ + vpxor x1, x2, x2; \ + vpor x0, x1, x1; \ + vpxor RNOT, x0, x0; \ + vpxor x2, x0, x0; \ + vpxor x1, x4, x4; + +#define S2_1(x0, x1, x2, x3, x4) \ + vpxor RNOT, x3, x3; \ + vpxor x0, x1, x1; \ + vpand x2, x0, tp; \ + vpxor x3, tp, tp; \ + vpor x0, x3, x3; \ + vpxor x1, x2, x2; \ + vpxor x1, x3, x3; \ + vpand tp, x1, x1; +#define S2_2(x0, x1, x2, x3, x4) \ + vpxor x2, tp, tp; \ + vpand x3, x2, x2; \ + vpor x1, x3, x3; \ + vpxor RNOT, tp, tp; \ + vpxor tp, x3, x3; \ + vpxor tp, x0, x4; \ + vpxor x2, tp, x0; \ + vpor x2, x1, x1; + +#define S3_1(x0, x1, x2, x3, x4) \ + vpxor x3, x1, tp; \ + vpor x0, x3, x3; \ + vpand x0, x1, x4; \ + vpxor x2, x0, x0; \ + vpxor tp, x2, x2; \ + vpand x3, tp, x1; \ + vpxor x3, x2, x2; \ + vpor x4, x0, x0; \ + vpxor x3, x4, x4; +#define S3_2(x0, x1, x2, x3, x4) \ + vpxor x0, x1, x1; \ + vpand x3, x0, x0; \ + vpand x4, x3, x3; \ + vpxor x2, x3, x3; \ + vpor x1, x4, x4; \ + vpand x1, x2, x2; \ + vpxor x3, x4, x4; \ + vpxor x3, x0, x0; \ + vpxor x2, x3, x3; + +#define S4_1(x0, x1, x2, x3, x4) \ + vpand x0, x3, tp; \ + vpxor x3, x0, x0; \ + vpxor x2, tp, tp; \ + vpor x3, x2, x2; \ + vpxor x1, x0, x0; \ + vpxor tp, x3, x4; \ + vpor x0, x2, x2; \ + vpxor x1, x2, x2; +#define S4_2(x0, x1, x2, x3, x4) \ + vpand x0, x1, x1; \ + vpxor x4, x1, x1; \ + vpand x2, x4, x4; \ + vpxor tp, x2, x2; \ + vpxor x0, x4, x4; \ + vpor x1, tp, x3; \ + vpxor RNOT, x1, x1; \ + vpxor x0, x3, x3; + +#define S5_1(x0, x1, x2, x3, x4) \ + vpor x0, x1, tp; \ + vpxor tp, x2, x2; \ + vpxor RNOT, x3, x3; \ + vpxor x0, x1, x4; \ + vpxor x2, x0, x0; \ + vpand x4, tp, x1; \ + vpor x3, x4, x4; \ + vpxor x0, x4, x4; +#define S5_2(x0, x1, x2, x3, x4) \ + vpand x3, x0, x0; \ + vpxor x3, x1, x1; \ + vpxor x2, x3, x3; \ + vpxor x1, x0, x0; \ + vpand x4, x2, x2; \ + vpxor x2, x1, x1; \ + vpand x0, x2, x2; \ + vpxor x2, x3, x3; + +#define S6_1(x0, x1, x2, x3, x4) \ + vpxor x0, x3, x3; \ + vpxor x2, x1, tp; \ + vpxor x0, x2, x2; \ + vpand x3, x0, x0; \ + vpor x3, tp, tp; \ + vpxor RNOT, x1, x4; \ + vpxor tp, x0, x0; \ + vpxor x2, tp, x1; +#define S6_2(x0, x1, x2, x3, x4) \ + vpxor x4, x3, x3; \ + vpxor x0, x4, x4; \ + vpand x0, x2, x2; \ + vpxor x1, x4, x4; \ + vpxor x3, x2, x2; \ + vpand x1, x3, x3; \ + vpxor x0, x3, x3; \ + vpxor x2, x1, x1; + +#define S7_1(x0, x1, x2, x3, x4) \ + vpxor RNOT, x1, tp; \ + vpxor RNOT, x0, x0; \ + vpand x2, tp, x1; \ + vpxor x3, x1, x1; \ + vpor tp, x3, x3; \ + vpxor x2, tp, x4; \ + vpxor x3, x2, x2; \ + vpxor x0, x3, x3; \ + vpor x1, x0, x0; +#define S7_2(x0, x1, x2, x3, x4) \ + vpand x0, x2, x2; \ + vpxor x4, x0, x0; \ + vpxor x3, x4, x4; \ + vpand x0, x3, x3; \ + vpxor x1, x4, x4; \ + vpxor x4, x2, x2; \ + vpxor x1, x3, x3; \ + vpor x0, x4, x4; \ + vpxor x1, x4, x4; + +#define SI0_1(x0, x1, x2, x3, x4) \ + vpxor x0, x1, x1; \ + vpor x1, x3, tp; \ + vpxor x1, x3, x4; \ + vpxor RNOT, x0, x0; \ + vpxor tp, x2, x2; \ + vpxor x0, tp, x3; \ + vpand x1, x0, x0; \ + vpxor x2, x0, x0; +#define SI0_2(x0, x1, x2, x3, x4) \ + vpand x3, x2, x2; \ + vpxor x4, x3, x3; \ + vpxor x3, x2, x2; \ + vpxor x3, x1, x1; \ + vpand x0, x3, x3; \ + vpxor x0, x1, x1; \ + vpxor x2, x0, x0; \ + vpxor x3, x4, x4; + +#define SI1_1(x0, x1, x2, x3, x4) \ + vpxor x3, x1, x1; \ + vpxor x2, x0, tp; \ + vpxor RNOT, x2, x2; \ + vpor x1, x0, x4; \ + vpxor x3, x4, x4; \ + vpand x1, x3, x3; \ + vpxor x2, x1, x1; \ + vpand x4, x2, x2; +#define SI1_2(x0, x1, x2, x3, x4) \ + vpxor x1, x4, x4; \ + vpor x3, x1, x1; \ + vpxor tp, x3, x3; \ + vpxor tp, x2, x2; \ + vpor x4, tp, x0; \ + vpxor x4, x2, x2; \ + vpxor x0, x1, x1; \ + vpxor x1, x4, x4; + +#define SI2_1(x0, x1, x2, x3, x4) \ + vpxor x1, x2, x2; \ + vpxor RNOT, x3, tp; \ + vpor x2, tp, tp; \ + vpxor x3, x2, x2; \ + vpxor x0, x3, x4; \ + vpxor x1, tp, x3; \ + vpor x2, x1, x1; \ + vpxor x0, x2, x2; +#define SI2_2(x0, x1, x2, x3, x4) \ + vpxor x4, x1, x1; \ + vpor x3, x4, x4; \ + vpxor x3, x2, x2; \ + vpxor x2, x4, x4; \ + vpand x1, x2, x2; \ + vpxor x3, x2, x2; \ + vpxor x4, x3, x3; \ + vpxor x0, x4, x4; + +#define SI3_1(x0, x1, x2, x3, x4) \ + vpxor x1, x2, x2; \ + vpand x2, x1, tp; \ + vpxor x0, tp, tp; \ + vpor x1, x0, x0; \ + vpxor x3, x1, x4; \ + vpxor x3, x0, x0; \ + vpor tp, x3, x3; \ + vpxor x2, tp, x1; +#define SI3_2(x0, x1, x2, x3, x4) \ + vpxor x3, x1, x1; \ + vpxor x2, x0, x0; \ + vpxor x3, x2, x2; \ + vpand x1, x3, x3; \ + vpxor x0, x1, x1; \ + vpand x2, x0, x0; \ + vpxor x3, x4, x4; \ + vpxor x0, x3, x3; \ + vpxor x1, x0, x0; + +#define SI4_1(x0, x1, x2, x3, x4) \ + vpxor x3, x2, x2; \ + vpand x1, x0, tp; \ + vpxor x2, tp, tp; \ + vpor x3, x2, x2; \ + vpxor RNOT, x0, x4; \ + vpxor tp, x1, x1; \ + vpxor x2, tp, x0; \ + vpand x4, x2, x2; +#define SI4_2(x0, x1, x2, x3, x4) \ + vpxor x0, x2, x2; \ + vpor x4, x0, x0; \ + vpxor x3, x0, x0; \ + vpand x2, x3, x3; \ + vpxor x3, x4, x4; \ + vpxor x1, x3, x3; \ + vpand x0, x1, x1; \ + vpxor x1, x4, x4; \ + vpxor x3, x0, x0; + +#define SI5_1(x0, x1, x2, x3, x4) \ + vpor x2, x1, tp; \ + vpxor x1, x2, x2; \ + vpxor x3, tp, tp; \ + vpand x1, x3, x3; \ + vpxor x3, x2, x2; \ + vpor x0, x3, x3; \ + vpxor RNOT, x0, x0; \ + vpxor x2, x3, x3; \ + vpor x0, x2, x2; +#define SI5_2(x0, x1, x2, x3, x4) \ + vpxor tp, x1, x4; \ + vpxor x4, x2, x2; \ + vpand x0, x4, x4; \ + vpxor tp, x0, x0; \ + vpxor x3, tp, x1; \ + vpand x2, x0, x0; \ + vpxor x3, x2, x2; \ + vpxor x2, x0, x0; \ + vpxor x4, x2, x2; \ + vpxor x3, x4, x4; + +#define SI6_1(x0, x1, x2, x3, x4) \ + vpxor x2, x0, x0; \ + vpand x3, x0, tp; \ + vpxor x3, x2, x2; \ + vpxor x2, tp, tp; \ + vpxor x1, x3, x3; \ + vpor x0, x2, x2; \ + vpxor x3, x2, x2; \ + vpand tp, x3, x3; +#define SI6_2(x0, x1, x2, x3, x4) \ + vpxor RNOT, tp, tp; \ + vpxor x1, x3, x3; \ + vpand x2, x1, x1; \ + vpxor tp, x0, x4; \ + vpxor x4, x3, x3; \ + vpxor x2, x4, x4; \ + vpxor x1, tp, x0; \ + vpxor x0, x2, x2; + +#define SI7_1(x0, x1, x2, x3, x4) \ + vpand x0, x3, tp; \ + vpxor x2, x0, x0; \ + vpor x3, x2, x2; \ + vpxor x1, x3, x4; \ + vpxor RNOT, x0, x0; \ + vpor tp, x1, x1; \ + vpxor x0, x4, x4; \ + vpand x2, x0, x0; \ + vpxor x1, x0, x0; +#define SI7_2(x0, x1, x2, x3, x4) \ + vpand x2, x1, x1; \ + vpxor x2, tp, x3; \ + vpxor x3, x4, x4; \ + vpand x3, x2, x2; \ + vpor x0, x3, x3; \ + vpxor x4, x1, x1; \ + vpxor x4, x3, x3; \ + vpand x0, x4, x4; \ + vpxor x2, x4, x4; + +#define get_key(i,j,t) \ + vpbroadcastd (4*(i)+(j))*4(CTX), t; + +#define K2(x0, x1, x2, x3, x4, i) \ + get_key(i, 0, RK0); \ + get_key(i, 1, RK1); \ + get_key(i, 2, RK2); \ + get_key(i, 3, RK3); \ + vpxor RK0, x0 ## 1, x0 ## 1; \ + vpxor RK1, x1 ## 1, x1 ## 1; \ + vpxor RK2, x2 ## 1, x2 ## 1; \ + vpxor RK3, x3 ## 1, x3 ## 1; \ + vpxor RK0, x0 ## 2, x0 ## 2; \ + vpxor RK1, x1 ## 2, x1 ## 2; \ + vpxor RK2, x2 ## 2, x2 ## 2; \ + vpxor RK3, x3 ## 2, x3 ## 2; + +#define LK2(x0, x1, x2, x3, x4, i) \ + vpslld $13, x0 ## 1, x4 ## 1; \ + vpsrld $(32 - 13), x0 ## 1, x0 ## 1; \ + vpor x4 ## 1, x0 ## 1, x0 ## 1; \ + vpxor x0 ## 1, x1 ## 1, x1 ## 1; \ + vpslld $3, x2 ## 1, x4 ## 1; \ + vpsrld $(32 - 3), x2 ## 1, x2 ## 1; \ + vpor x4 ## 1, x2 ## 1, x2 ## 1; \ + vpxor x2 ## 1, x1 ## 1, x1 ## 1; \ + vpslld $13, x0 ## 2, x4 ## 2; \ + vpsrld $(32 - 13), x0 ## 2, x0 ## 2; \ + vpor x4 ## 2, x0 ## 2, x0 ## 2; \ + vpxor x0 ## 2, x1 ## 2, x1 ## 2; \ + vpslld $3, x2 ## 2, x4 ## 2; \ + vpsrld $(32 - 3), x2 ## 2, x2 ## 2; \ + vpor x4 ## 2, x2 ## 2, x2 ## 2; \ + vpxor x2 ## 2, x1 ## 2, x1 ## 2; \ + vpslld $1, x1 ## 1, x4 ## 1; \ + vpsrld $(32 - 1), x1 ## 1, x1 ## 1; \ + vpor x4 ## 1, x1 ## 1, x1 ## 1; \ + vpslld $3, x0 ## 1, x4 ## 1; \ + vpxor x2 ## 1, x3 ## 1, x3 ## 1; \ + vpxor x4 ## 1, x3 ## 1, x3 ## 1; \ + get_key(i, 1, RK1); \ + vpslld $1, x1 ## 2, x4 ## 2; \ + vpsrld $(32 - 1), x1 ## 2, x1 ## 2; \ + vpor x4 ## 2, x1 ## 2, x1 ## 2; \ + vpslld $3, x0 ## 2, x4 ## 2; \ + vpxor x2 ## 2, x3 ## 2, x3 ## 2; \ + vpxor x4 ## 2, x3 ## 2, x3 ## 2; \ + get_key(i, 3, RK3); \ + vpslld $7, x3 ## 1, x4 ## 1; \ + vpsrld $(32 - 7), x3 ## 1, x3 ## 1; \ + vpor x4 ## 1, x3 ## 1, x3 ## 1; \ + vpslld $7, x1 ## 1, x4 ## 1; \ + vpxor x1 ## 1, x0 ## 1, x0 ## 1; \ + vpxor x3 ## 1, x0 ## 1, x0 ## 1; \ + vpxor x3 ## 1, x2 ## 1, x2 ## 1; \ + vpxor x4 ## 1, x2 ## 1, x2 ## 1; \ + get_key(i, 0, RK0); \ + vpslld $7, x3 ## 2, x4 ## 2; \ + vpsrld $(32 - 7), x3 ## 2, x3 ## 2; \ + vpor x4 ## 2, x3 ## 2, x3 ## 2; \ + vpslld $7, x1 ## 2, x4 ## 2; \ + vpxor x1 ## 2, x0 ## 2, x0 ## 2; \ + vpxor x3 ## 2, x0 ## 2, x0 ## 2; \ + vpxor x3 ## 2, x2 ## 2, x2 ## 2; \ + vpxor x4 ## 2, x2 ## 2, x2 ## 2; \ + get_key(i, 2, RK2); \ + vpxor RK1, x1 ## 1, x1 ## 1; \ + vpxor RK3, x3 ## 1, x3 ## 1; \ + vpslld $5, x0 ## 1, x4 ## 1; \ + vpsrld $(32 - 5), x0 ## 1, x0 ## 1; \ + vpor x4 ## 1, x0 ## 1, x0 ## 1; \ + vpslld $22, x2 ## 1, x4 ## 1; \ + vpsrld $(32 - 22), x2 ## 1, x2 ## 1; \ + vpor x4 ## 1, x2 ## 1, x2 ## 1; \ + vpxor RK0, x0 ## 1, x0 ## 1; \ + vpxor RK2, x2 ## 1, x2 ## 1; \ + vpxor RK1, x1 ## 2, x1 ## 2; \ + vpxor RK3, x3 ## 2, x3 ## 2; \ + vpslld $5, x0 ## 2, x4 ## 2; \ + vpsrld $(32 - 5), x0 ## 2, x0 ## 2; \ + vpor x4 ## 2, x0 ## 2, x0 ## 2; \ + vpslld $22, x2 ## 2, x4 ## 2; \ + vpsrld $(32 - 22), x2 ## 2, x2 ## 2; \ + vpor x4 ## 2, x2 ## 2, x2 ## 2; \ + vpxor RK0, x0 ## 2, x0 ## 2; \ + vpxor RK2, x2 ## 2, x2 ## 2; + +#define KL2(x0, x1, x2, x3, x4, i) \ + vpxor RK0, x0 ## 1, x0 ## 1; \ + vpxor RK2, x2 ## 1, x2 ## 1; \ + vpsrld $5, x0 ## 1, x4 ## 1; \ + vpslld $(32 - 5), x0 ## 1, x0 ## 1; \ + vpor x4 ## 1, x0 ## 1, x0 ## 1; \ + vpxor RK3, x3 ## 1, x3 ## 1; \ + vpxor RK1, x1 ## 1, x1 ## 1; \ + vpsrld $22, x2 ## 1, x4 ## 1; \ + vpslld $(32 - 22), x2 ## 1, x2 ## 1; \ + vpor x4 ## 1, x2 ## 1, x2 ## 1; \ + vpxor x3 ## 1, x2 ## 1, x2 ## 1; \ + vpxor RK0, x0 ## 2, x0 ## 2; \ + vpxor RK2, x2 ## 2, x2 ## 2; \ + vpsrld $5, x0 ## 2, x4 ## 2; \ + vpslld $(32 - 5), x0 ## 2, x0 ## 2; \ + vpor x4 ## 2, x0 ## 2, x0 ## 2; \ + vpxor RK3, x3 ## 2, x3 ## 2; \ + vpxor RK1, x1 ## 2, x1 ## 2; \ + vpsrld $22, x2 ## 2, x4 ## 2; \ + vpslld $(32 - 22), x2 ## 2, x2 ## 2; \ + vpor x4 ## 2, x2 ## 2, x2 ## 2; \ + vpxor x3 ## 2, x2 ## 2, x2 ## 2; \ + vpxor x3 ## 1, x0 ## 1, x0 ## 1; \ + vpslld $7, x1 ## 1, x4 ## 1; \ + vpxor x1 ## 1, x0 ## 1, x0 ## 1; \ + vpxor x4 ## 1, x2 ## 1, x2 ## 1; \ + vpsrld $1, x1 ## 1, x4 ## 1; \ + vpslld $(32 - 1), x1 ## 1, x1 ## 1; \ + vpor x4 ## 1, x1 ## 1, x1 ## 1; \ + vpxor x3 ## 2, x0 ## 2, x0 ## 2; \ + vpslld $7, x1 ## 2, x4 ## 2; \ + vpxor x1 ## 2, x0 ## 2, x0 ## 2; \ + vpxor x4 ## 2, x2 ## 2, x2 ## 2; \ + vpsrld $1, x1 ## 2, x4 ## 2; \ + vpslld $(32 - 1), x1 ## 2, x1 ## 2; \ + vpor x4 ## 2, x1 ## 2, x1 ## 2; \ + vpsrld $7, x3 ## 1, x4 ## 1; \ + vpslld $(32 - 7), x3 ## 1, x3 ## 1; \ + vpor x4 ## 1, x3 ## 1, x3 ## 1; \ + vpxor x0 ## 1, x1 ## 1, x1 ## 1; \ + vpslld $3, x0 ## 1, x4 ## 1; \ + vpxor x4 ## 1, x3 ## 1, x3 ## 1; \ + vpsrld $7, x3 ## 2, x4 ## 2; \ + vpslld $(32 - 7), x3 ## 2, x3 ## 2; \ + vpor x4 ## 2, x3 ## 2, x3 ## 2; \ + vpxor x0 ## 2, x1 ## 2, x1 ## 2; \ + vpslld $3, x0 ## 2, x4 ## 2; \ + vpxor x4 ## 2, x3 ## 2, x3 ## 2; \ + vpsrld $13, x0 ## 1, x4 ## 1; \ + vpslld $(32 - 13), x0 ## 1, x0 ## 1; \ + vpor x4 ## 1, x0 ## 1, x0 ## 1; \ + vpxor x2 ## 1, x1 ## 1, x1 ## 1; \ + vpxor x2 ## 1, x3 ## 1, x3 ## 1; \ + vpsrld $3, x2 ## 1, x4 ## 1; \ + vpslld $(32 - 3), x2 ## 1, x2 ## 1; \ + vpor x4 ## 1, x2 ## 1, x2 ## 1; \ + vpsrld $13, x0 ## 2, x4 ## 2; \ + vpslld $(32 - 13), x0 ## 2, x0 ## 2; \ + vpor x4 ## 2, x0 ## 2, x0 ## 2; \ + vpxor x2 ## 2, x1 ## 2, x1 ## 2; \ + vpxor x2 ## 2, x3 ## 2, x3 ## 2; \ + vpsrld $3, x2 ## 2, x4 ## 2; \ + vpslld $(32 - 3), x2 ## 2, x2 ## 2; \ + vpor x4 ## 2, x2 ## 2, x2 ## 2; + +#define S(SBOX, x0, x1, x2, x3, x4) \ + SBOX ## _1(x0 ## 1, x1 ## 1, x2 ## 1, x3 ## 1, x4 ## 1); \ + SBOX ## _2(x0 ## 1, x1 ## 1, x2 ## 1, x3 ## 1, x4 ## 1); \ + SBOX ## _1(x0 ## 2, x1 ## 2, x2 ## 2, x3 ## 2, x4 ## 2); \ + SBOX ## _2(x0 ## 2, x1 ## 2, x2 ## 2, x3 ## 2, x4 ## 2); + +#define SP(SBOX, x0, x1, x2, x3, x4, i) \ + get_key(i, 0, RK0); \ + SBOX ## _1(x0 ## 1, x1 ## 1, x2 ## 1, x3 ## 1, x4 ## 1); \ + get_key(i, 2, RK2); \ + SBOX ## _2(x0 ## 1, x1 ## 1, x2 ## 1, x3 ## 1, x4 ## 1); \ + get_key(i, 3, RK3); \ + SBOX ## _1(x0 ## 2, x1 ## 2, x2 ## 2, x3 ## 2, x4 ## 2); \ + get_key(i, 1, RK1); \ + SBOX ## _2(x0 ## 2, x1 ## 2, x2 ## 2, x3 ## 2, x4 ## 2); \ + +#define transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \ + vpunpckldq x1, x0, t0; \ + vpunpckhdq x1, x0, t2; \ + vpunpckldq x3, x2, t1; \ + vpunpckhdq x3, x2, x3; \ + \ + vpunpcklqdq t1, t0, x0; \ + vpunpckhqdq t1, t0, x1; \ + vpunpcklqdq x3, t2, x2; \ + vpunpckhqdq x3, t2, x3; + +#define read_blocks(x0, x1, x2, x3, t0, t1, t2) \ + transpose_4x4(x0, x1, x2, x3, t0, t1, t2) + +#define write_blocks(x0, x1, x2, x3, t0, t1, t2) \ + transpose_4x4(x0, x1, x2, x3, t0, t1, t2) + +.align 8 +__serpent_enc_blk16: + /* input: + * %rdi: ctx, CTX + * RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2: plaintext + * output: + * RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2: ciphertext + */ + + vpcmpeqd RNOT, RNOT, RNOT; + + read_blocks(RA1, RB1, RC1, RD1, RK0, RK1, RK2); + read_blocks(RA2, RB2, RC2, RD2, RK0, RK1, RK2); + + K2(RA, RB, RC, RD, RE, 0); + S(S0, RA, RB, RC, RD, RE); LK2(RC, RB, RD, RA, RE, 1); + S(S1, RC, RB, RD, RA, RE); LK2(RE, RD, RA, RC, RB, 2); + S(S2, RE, RD, RA, RC, RB); LK2(RB, RD, RE, RC, RA, 3); + S(S3, RB, RD, RE, RC, RA); LK2(RC, RA, RD, RB, RE, 4); + S(S4, RC, RA, RD, RB, RE); LK2(RA, RD, RB, RE, RC, 5); + S(S5, RA, RD, RB, RE, RC); LK2(RC, RA, RD, RE, RB, 6); + S(S6, RC, RA, RD, RE, RB); LK2(RD, RB, RA, RE, RC, 7); + S(S7, RD, RB, RA, RE, RC); LK2(RC, RA, RE, RD, RB, 8); + S(S0, RC, RA, RE, RD, RB); LK2(RE, RA, RD, RC, RB, 9); + S(S1, RE, RA, RD, RC, RB); LK2(RB, RD, RC, RE, RA, 10); + S(S2, RB, RD, RC, RE, RA); LK2(RA, RD, RB, RE, RC, 11); + S(S3, RA, RD, RB, RE, RC); LK2(RE, RC, RD, RA, RB, 12); + S(S4, RE, RC, RD, RA, RB); LK2(RC, RD, RA, RB, RE, 13); + S(S5, RC, RD, RA, RB, RE); LK2(RE, RC, RD, RB, RA, 14); + S(S6, RE, RC, RD, RB, RA); LK2(RD, RA, RC, RB, RE, 15); + S(S7, RD, RA, RC, RB, RE); LK2(RE, RC, RB, RD, RA, 16); + S(S0, RE, RC, RB, RD, RA); LK2(RB, RC, RD, RE, RA, 17); + S(S1, RB, RC, RD, RE, RA); LK2(RA, RD, RE, RB, RC, 18); + S(S2, RA, RD, RE, RB, RC); LK2(RC, RD, RA, RB, RE, 19); + S(S3, RC, RD, RA, RB, RE); LK2(RB, RE, RD, RC, RA, 20); + S(S4, RB, RE, RD, RC, RA); LK2(RE, RD, RC, RA, RB, 21); + S(S5, RE, RD, RC, RA, RB); LK2(RB, RE, RD, RA, RC, 22); + S(S6, RB, RE, RD, RA, RC); LK2(RD, RC, RE, RA, RB, 23); + S(S7, RD, RC, RE, RA, RB); LK2(RB, RE, RA, RD, RC, 24); + S(S0, RB, RE, RA, RD, RC); LK2(RA, RE, RD, RB, RC, 25); + S(S1, RA, RE, RD, RB, RC); LK2(RC, RD, RB, RA, RE, 26); + S(S2, RC, RD, RB, RA, RE); LK2(RE, RD, RC, RA, RB, 27); + S(S3, RE, RD, RC, RA, RB); LK2(RA, RB, RD, RE, RC, 28); + S(S4, RA, RB, RD, RE, RC); LK2(RB, RD, RE, RC, RA, 29); + S(S5, RB, RD, RE, RC, RA); LK2(RA, RB, RD, RC, RE, 30); + S(S6, RA, RB, RD, RC, RE); LK2(RD, RE, RB, RC, RA, 31); + S(S7, RD, RE, RB, RC, RA); K2(RA, RB, RC, RD, RE, 32); + + write_blocks(RA1, RB1, RC1, RD1, RK0, RK1, RK2); + write_blocks(RA2, RB2, RC2, RD2, RK0, RK1, RK2); + + ret; +ENDPROC(__serpent_enc_blk16) + +.align 8 +__serpent_dec_blk16: + /* input: + * %rdi: ctx, CTX + * RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2: ciphertext + * output: + * RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2: plaintext + */ + + vpcmpeqd RNOT, RNOT, RNOT; + + read_blocks(RA1, RB1, RC1, RD1, RK0, RK1, RK2); + read_blocks(RA2, RB2, RC2, RD2, RK0, RK1, RK2); + + K2(RA, RB, RC, RD, RE, 32); + SP(SI7, RA, RB, RC, RD, RE, 31); KL2(RB, RD, RA, RE, RC, 31); + SP(SI6, RB, RD, RA, RE, RC, 30); KL2(RA, RC, RE, RB, RD, 30); + SP(SI5, RA, RC, RE, RB, RD, 29); KL2(RC, RD, RA, RE, RB, 29); + SP(SI4, RC, RD, RA, RE, RB, 28); KL2(RC, RA, RB, RE, RD, 28); + SP(SI3, RC, RA, RB, RE, RD, 27); KL2(RB, RC, RD, RE, RA, 27); + SP(SI2, RB, RC, RD, RE, RA, 26); KL2(RC, RA, RE, RD, RB, 26); + SP(SI1, RC, RA, RE, RD, RB, 25); KL2(RB, RA, RE, RD, RC, 25); + SP(SI0, RB, RA, RE, RD, RC, 24); KL2(RE, RC, RA, RB, RD, 24); + SP(SI7, RE, RC, RA, RB, RD, 23); KL2(RC, RB, RE, RD, RA, 23); + SP(SI6, RC, RB, RE, RD, RA, 22); KL2(RE, RA, RD, RC, RB, 22); + SP(SI5, RE, RA, RD, RC, RB, 21); KL2(RA, RB, RE, RD, RC, 21); + SP(SI4, RA, RB, RE, RD, RC, 20); KL2(RA, RE, RC, RD, RB, 20); + SP(SI3, RA, RE, RC, RD, RB, 19); KL2(RC, RA, RB, RD, RE, 19); + SP(SI2, RC, RA, RB, RD, RE, 18); KL2(RA, RE, RD, RB, RC, 18); + SP(SI1, RA, RE, RD, RB, RC, 17); KL2(RC, RE, RD, RB, RA, 17); + SP(SI0, RC, RE, RD, RB, RA, 16); KL2(RD, RA, RE, RC, RB, 16); + SP(SI7, RD, RA, RE, RC, RB, 15); KL2(RA, RC, RD, RB, RE, 15); + SP(SI6, RA, RC, RD, RB, RE, 14); KL2(RD, RE, RB, RA, RC, 14); + SP(SI5, RD, RE, RB, RA, RC, 13); KL2(RE, RC, RD, RB, RA, 13); + SP(SI4, RE, RC, RD, RB, RA, 12); KL2(RE, RD, RA, RB, RC, 12); + SP(SI3, RE, RD, RA, RB, RC, 11); KL2(RA, RE, RC, RB, RD, 11); + SP(SI2, RA, RE, RC, RB, RD, 10); KL2(RE, RD, RB, RC, RA, 10); + SP(SI1, RE, RD, RB, RC, RA, 9); KL2(RA, RD, RB, RC, RE, 9); + SP(SI0, RA, RD, RB, RC, RE, 8); KL2(RB, RE, RD, RA, RC, 8); + SP(SI7, RB, RE, RD, RA, RC, 7); KL2(RE, RA, RB, RC, RD, 7); + SP(SI6, RE, RA, RB, RC, RD, 6); KL2(RB, RD, RC, RE, RA, 6); + SP(SI5, RB, RD, RC, RE, RA, 5); KL2(RD, RA, RB, RC, RE, 5); + SP(SI4, RD, RA, RB, RC, RE, 4); KL2(RD, RB, RE, RC, RA, 4); + SP(SI3, RD, RB, RE, RC, RA, 3); KL2(RE, RD, RA, RC, RB, 3); + SP(SI2, RE, RD, RA, RC, RB, 2); KL2(RD, RB, RC, RA, RE, 2); + SP(SI1, RD, RB, RC, RA, RE, 1); KL2(RE, RB, RC, RA, RD, 1); + S(SI0, RE, RB, RC, RA, RD); K2(RC, RD, RB, RE, RA, 0); + + write_blocks(RC1, RD1, RB1, RE1, RK0, RK1, RK2); + write_blocks(RC2, RD2, RB2, RE2, RK0, RK1, RK2); + + ret; +ENDPROC(__serpent_dec_blk16) + +ENTRY(serpent_ecb_enc_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + */ + + vzeroupper; + + load_16way(%rdx, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); + + call __serpent_enc_blk16; + + store_16way(%rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); + + vzeroupper; + + ret; +ENDPROC(serpent_ecb_enc_16way) + +ENTRY(serpent_ecb_dec_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + */ + + vzeroupper; + + load_16way(%rdx, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); + + call __serpent_dec_blk16; + + store_16way(%rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2); + + vzeroupper; + + ret; +ENDPROC(serpent_ecb_dec_16way) + +ENTRY(serpent_cbc_dec_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + */ + + vzeroupper; + + load_16way(%rdx, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); + + call __serpent_dec_blk16; + + store_cbc_16way(%rdx, %rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2, + RK0); + + vzeroupper; + + ret; +ENDPROC(serpent_cbc_dec_16way) + +ENTRY(serpent_ctr_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst (16 blocks) + * %rdx: src (16 blocks) + * %rcx: iv (little endian, 128bit) + */ + + vzeroupper; + + load_ctr_16way(%rcx, .Lbswap128_mask, RA1, RB1, RC1, RD1, RA2, RB2, RC2, + RD2, RK0, RK0x, RK1, RK1x, RK2, RK2x, RK3, RK3x, RNOT, + tp); + + call __serpent_enc_blk16; + + store_ctr_16way(%rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); + + vzeroupper; + + ret; +ENDPROC(serpent_ctr_16way) + +ENTRY(serpent_xts_enc_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst (16 blocks) + * %rdx: src (16 blocks) + * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) + */ + + vzeroupper; + + load_xts_16way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, + RD2, RK0, RK0x, RK1, RK1x, RK2, RK2x, RK3, RK3x, RNOT, + .Lxts_gf128mul_and_shl1_mask_0, + .Lxts_gf128mul_and_shl1_mask_1); + + call __serpent_enc_blk16; + + store_xts_16way(%rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); + + vzeroupper; + + ret; +ENDPROC(serpent_xts_enc_16way) + +ENTRY(serpent_xts_dec_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst (16 blocks) + * %rdx: src (16 blocks) + * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) + */ + + vzeroupper; + + load_xts_16way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, + RD2, RK0, RK0x, RK1, RK1x, RK2, RK2x, RK3, RK3x, RNOT, + .Lxts_gf128mul_and_shl1_mask_0, + .Lxts_gf128mul_and_shl1_mask_1); + + call __serpent_dec_blk16; + + store_xts_16way(%rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2); + + vzeroupper; + + ret; +ENDPROC(serpent_xts_dec_16way) diff --git a/arch/x86/crypto/serpent_avx2_glue.c b/arch/x86/crypto/serpent_avx2_glue.c new file mode 100644 index 00000000000..23aabc6c20a --- /dev/null +++ b/arch/x86/crypto/serpent_avx2_glue.c @@ -0,0 +1,562 @@ +/* + * Glue Code for x86_64/AVX2 assembler optimized version of Serpent + * + * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/crypto.h> +#include <linux/err.h> +#include <crypto/algapi.h> +#include <crypto/ctr.h> +#include <crypto/lrw.h> +#include <crypto/xts.h> +#include <crypto/serpent.h> +#include <asm/xcr.h> +#include <asm/xsave.h> +#include <asm/crypto/serpent-avx.h> +#include <asm/crypto/ablk_helper.h> +#include <asm/crypto/glue_helper.h> + +#define SERPENT_AVX2_PARALLEL_BLOCKS 16 + +/* 16-way AVX2 parallel cipher functions */ +asmlinkage void serpent_ecb_enc_16way(struct serpent_ctx *ctx, u8 *dst, + const u8 *src); +asmlinkage void serpent_ecb_dec_16way(struct serpent_ctx *ctx, u8 *dst, + const u8 *src); +asmlinkage void serpent_cbc_dec_16way(void *ctx, u128 *dst, const u128 *src); + +asmlinkage void serpent_ctr_16way(void *ctx, u128 *dst, const u128 *src, + le128 *iv); +asmlinkage void serpent_xts_enc_16way(struct serpent_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); +asmlinkage void serpent_xts_dec_16way(struct serpent_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); + +static const struct common_glue_ctx serpent_enc = { + .num_funcs = 3, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_16way) } + }, { + .num_blocks = 8, + .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_encrypt) } + } } +}; + +static const struct common_glue_ctx serpent_ctr = { + .num_funcs = 3, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_16way) } + }, { + .num_blocks = 8, + .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(__serpent_crypt_ctr) } + } } +}; + +static const struct common_glue_ctx serpent_enc_xts = { + .num_funcs = 3, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_16way) } + }, { + .num_blocks = 8, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc) } + } } +}; + +static const struct common_glue_ctx serpent_dec = { + .num_funcs = 3, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_16way) } + }, { + .num_blocks = 8, + .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_decrypt) } + } } +}; + +static const struct common_glue_ctx serpent_dec_cbc = { + .num_funcs = 3, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_16way) } + }, { + .num_blocks = 8, + .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__serpent_decrypt) } + } } +}; + +static const struct common_glue_ctx serpent_dec_xts = { + .num_funcs = 3, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_16way) } + }, { + .num_blocks = 8, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_8way_avx) } + }, { + .num_blocks = 1, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec) } + } } +}; + +static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + return glue_ecb_crypt_128bit(&serpent_enc, desc, dst, src, nbytes); +} + +static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + return glue_ecb_crypt_128bit(&serpent_dec, desc, dst, src, nbytes); +} + +static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(__serpent_encrypt), desc, + dst, src, nbytes); +} + +static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + return glue_cbc_decrypt_128bit(&serpent_dec_cbc, desc, dst, src, + nbytes); +} + +static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + return glue_ctr_crypt_128bit(&serpent_ctr, desc, dst, src, nbytes); +} + +static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes) +{ + /* since reusing AVX functions, starts using FPU at 8 parallel blocks */ + return glue_fpu_begin(SERPENT_BLOCK_SIZE, 8, NULL, fpu_enabled, nbytes); +} + +static inline void serpent_fpu_end(bool fpu_enabled) +{ + glue_fpu_end(fpu_enabled); +} + +struct crypt_priv { + struct serpent_ctx *ctx; + bool fpu_enabled; +}; + +static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) +{ + const unsigned int bsize = SERPENT_BLOCK_SIZE; + struct crypt_priv *ctx = priv; + int i; + + ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); + + if (nbytes >= SERPENT_AVX2_PARALLEL_BLOCKS * bsize) { + serpent_ecb_enc_16way(ctx->ctx, srcdst, srcdst); + srcdst += bsize * SERPENT_AVX2_PARALLEL_BLOCKS; + nbytes -= bsize * SERPENT_AVX2_PARALLEL_BLOCKS; + } + + while (nbytes >= SERPENT_PARALLEL_BLOCKS * bsize) { + serpent_ecb_enc_8way_avx(ctx->ctx, srcdst, srcdst); + srcdst += bsize * SERPENT_PARALLEL_BLOCKS; + nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; + } + + for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) + __serpent_encrypt(ctx->ctx, srcdst, srcdst); +} + +static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) +{ + const unsigned int bsize = SERPENT_BLOCK_SIZE; + struct crypt_priv *ctx = priv; + int i; + + ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); + + if (nbytes >= SERPENT_AVX2_PARALLEL_BLOCKS * bsize) { + serpent_ecb_dec_16way(ctx->ctx, srcdst, srcdst); + srcdst += bsize * SERPENT_AVX2_PARALLEL_BLOCKS; + nbytes -= bsize * SERPENT_AVX2_PARALLEL_BLOCKS; + } + + while (nbytes >= SERPENT_PARALLEL_BLOCKS * bsize) { + serpent_ecb_dec_8way_avx(ctx->ctx, srcdst, srcdst); + srcdst += bsize * SERPENT_PARALLEL_BLOCKS; + nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; + } + + for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) + __serpent_decrypt(ctx->ctx, srcdst, srcdst); +} + +static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[SERPENT_AVX2_PARALLEL_BLOCKS]; + struct crypt_priv crypt_ctx = { + .ctx = &ctx->serpent_ctx, + .fpu_enabled = false, + }; + struct lrw_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .table_ctx = &ctx->lrw_table, + .crypt_ctx = &crypt_ctx, + .crypt_fn = encrypt_callback, + }; + int ret; + + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; + ret = lrw_crypt(desc, dst, src, nbytes, &req); + serpent_fpu_end(crypt_ctx.fpu_enabled); + + return ret; +} + +static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[SERPENT_AVX2_PARALLEL_BLOCKS]; + struct crypt_priv crypt_ctx = { + .ctx = &ctx->serpent_ctx, + .fpu_enabled = false, + }; + struct lrw_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .table_ctx = &ctx->lrw_table, + .crypt_ctx = &crypt_ctx, + .crypt_fn = decrypt_callback, + }; + int ret; + + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; + ret = lrw_crypt(desc, |