diff options
Diffstat (limited to 'arch/x86/crypto')
| -rw-r--r-- | arch/x86/crypto/Makefile | 2 | ||||
| -rw-r--r-- | arch/x86/crypto/glue_helper-asm-avx2.S | 180 | ||||
| -rw-r--r-- | arch/x86/crypto/twofish-avx2-asm_64.S | 600 | ||||
| -rw-r--r-- | arch/x86/crypto/twofish_avx2_glue.c | 584 | ||||
| -rw-r--r-- | arch/x86/crypto/twofish_avx_glue.c | 14 |
5 files changed, 1378 insertions, 2 deletions
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile index 28464ef..1f6e0c2 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-$(CONFIG_CRYPTO_TWOFISH_AVX2_X86_64) += twofish-avx2.o endif aes-i586-y := aes-i586-asm_32.o aes_glue.o @@ -71,6 +72,7 @@ endif ifeq ($(avx2_supported),yes) blowfish-avx2-y := blowfish-avx2-asm_64.o blowfish_avx2_glue.o + twofish-avx2-y := twofish-avx2-asm_64.o twofish_avx2_glue.o endif aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o fpu.o diff --git a/arch/x86/crypto/glue_helper-asm-avx2.S b/arch/x86/crypto/glue_helper-asm-avx2.S new file mode 100644 index 0000000..a53ac11 --- /dev/null +++ b/arch/x86/crypto/glue_helper-asm-avx2.S @@ -0,0 +1,180 @@ +/* + * Shared glue code for 128bit block ciphers, AVX2 assembler macros + * + * 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. + * + */ + +#define load_16way(src, x0, x1, x2, x3, x4, x5, x6, x7) \ + vmovdqu (0*32)(src), x0; \ + vmovdqu (1*32)(src), x1; \ + vmovdqu (2*32)(src), x2; \ + vmovdqu (3*32)(src), x3; \ + vmovdqu (4*32)(src), x4; \ + vmovdqu (5*32)(src), x5; \ + vmovdqu (6*32)(src), x6; \ + vmovdqu (7*32)(src), x7; + +#define store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7) \ + vmovdqu x0, (0*32)(dst); \ + vmovdqu x1, (1*32)(dst); \ + vmovdqu x2, (2*32)(dst); \ + vmovdqu x3, (3*32)(dst); \ + vmovdqu x4, (4*32)(dst); \ + vmovdqu x5, (5*32)(dst); \ + vmovdqu x6, (6*32)(dst); \ + vmovdqu x7, (7*32)(dst); + +#define store_cbc_16way(src, dst, x0, x1, x2, x3, x4, x5, x6, x7, t0) \ + vpxor t0, t0, t0; \ + vinserti128 $1, (src), t0, t0; \ + vpxor t0, x0, x0; \ + vpxor (0*32+16)(src), x1, x1; \ + vpxor (1*32+16)(src), x2, x2; \ + vpxor (2*32+16)(src), x3, x3; \ + vpxor (3*32+16)(src), x4, x4; \ + vpxor (4*32+16)(src), x5, x5; \ + vpxor (5*32+16)(src), x6, x6; \ + vpxor (6*32+16)(src), x7, x7; \ + store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7); + +#define inc_le128(x, minus_one, tmp) \ + vpcmpeqq minus_one, x, tmp; \ + vpsubq minus_one, x, x; \ + vpslldq $8, tmp, tmp; \ + vpsubq tmp, x, x; + +#define add2_le128(x, minus_one, minus_two, tmp1, tmp2) \ + vpcmpeqq minus_one, x, tmp1; \ + vpcmpeqq minus_two, x, tmp2; \ + vpsubq minus_two, x, x; \ + vpor tmp2, tmp1, tmp1; \ + vpslldq $8, tmp1, tmp1; \ + vpsubq tmp1, x, x; + +#define load_ctr_16way(iv, bswap, x0, x1, x2, x3, x4, x5, x6, x7, t0, t0x, t1, \ + t1x, t2, t2x, t3, t3x, t4, t5) \ + vpcmpeqd t0, t0, t0; \ + vpsrldq $8, t0, t0; /* ab: -1:0 ; cd: -1:0 */ \ + vpaddq t0, t0, t4; /* ab: -2:0 ; cd: -2:0 */\ + \ + /* load IV and byteswap */ \ + vmovdqu (iv), t2x; \ + vmovdqa t2x, t3x; \ + inc_le128(t2x, t0x, t1x); \ + vbroadcasti128 bswap, t1; \ + vinserti128 $1, t2x, t3, t2; /* ab: le0 ; cd: le1 */ \ + vpshufb t1, t2, x0; \ + \ + /* construct IVs */ \ + add2_le128(t2, t0, t4, t3, t5); /* ab: le2 ; cd: le3 */ \ + vpshufb t1, t2, x1; \ + add2_le128(t2, t0, t4, t3, t5); \ + vpshufb t1, t2, x2; \ + add2_le128(t2, t0, t4, t3, t5); \ + vpshufb t1, t2, x3; \ + add2_le128(t2, t0, t4, t3, t5); \ + vpshufb t1, t2, x4; \ + add2_le128(t2, t0, t4, t3, t5); \ + vpshufb t1, t2, x5; \ + add2_le128(t2, t0, t4, t3, t5); \ + vpshufb t1, t2, x6; \ + add2_le128(t2, t0, t4, t3, t5); \ + vpshufb t1, t2, x7; \ + vextracti128 $1, t2, t2x; \ + inc_le128(t2x, t0x, t3x); \ + vmovdqu t2x, (iv); + +#define store_ctr_16way(src, dst, x0, x1, x2, x3, x4, x5, x6, x7) \ + vpxor (0*32)(src), x0, x0; \ + vpxor (1*32)(src), x1, x1; \ + vpxor (2*32)(src), x2, x2; \ + vpxor (3*32)(src), x3, x3; \ + vpxor (4*32)(src), x4, x4; \ + vpxor (5*32)(src), x5, x5; \ + vpxor (6*32)(src), x6, x6; \ + vpxor (7*32)(src), x7, x7; \ + store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7); + +#define gf128mul_x_ble(iv, mask, tmp) \ + vpsrad $31, iv, tmp; \ + vpaddq iv, iv, iv; \ + vpshufd $0x13, tmp, tmp; \ + vpand mask, tmp, tmp; \ + vpxor tmp, iv, iv; + +#define gf128mul_x2_ble(iv, mask1, mask2, tmp0, tmp1) \ + vpsrad $31, iv, tmp0; \ + vpaddq iv, iv, tmp1; \ + vpsllq $2, iv, iv; \ + vpshufd $0x13, tmp0, tmp0; \ + vpsrad $31, tmp1, tmp1; \ + vpand mask2, tmp0, tmp0; \ + vpshufd $0x13, tmp1, tmp1; \ + vpxor tmp0, iv, iv; \ + vpand mask1, tmp1, tmp1; \ + vpxor tmp1, iv, iv; + +#define load_xts_16way(iv, src, dst, x0, x1, x2, x3, x4, x5, x6, x7, tiv, \ + tivx, t0, t0x, t1, t1x, t2, t2x, t3, \ + xts_gf128mul_and_shl1_mask_0, \ + xts_gf128mul_and_shl1_mask_1) \ + vbroadcasti128 xts_gf128mul_and_shl1_mask_0, t1; \ + \ + /* load IV and construct second IV */ \ + vmovdqu (iv), tivx; \ + vmovdqa tivx, t0x; \ + gf128mul_x_ble(tivx, t1x, t2x); \ + vbroadcasti128 xts_gf128mul_and_shl1_mask_1, t2; \ + vinserti128 $1, tivx, t0, tiv; \ + vpxor (0*32)(src), tiv, x0; \ + vmovdqu tiv, (0*32)(dst); \ + \ + /* construct and store IVs, also xor with source */ \ + gf128mul_x2_ble(tiv, t1, t2, t0, t3); \ + vpxor (1*32)(src), tiv, x1; \ + vmovdqu tiv, (1*32)(dst); \ + \ + gf128mul_x2_ble(tiv, t1, t2, t0, t3); \ + vpxor (2*32)(src), tiv, x2; \ + vmovdqu tiv, (2*32)(dst); \ + \ + gf128mul_x2_ble(tiv, t1, t2, t0, t3); \ + vpxor (3*32)(src), tiv, x3; \ + vmovdqu tiv, (3*32)(dst); \ + \ + gf128mul_x2_ble(tiv, t1, t2, t0, t3); \ + vpxor (4*32)(src), tiv, x4; \ + vmovdqu tiv, (4*32)(dst); \ + \ + gf128mul_x2_ble(tiv, t1, t2, t0, t3); \ + vpxor (5*32)(src), tiv, x5; \ + vmovdqu tiv, (5*32)(dst); \ + \ + gf128mul_x2_ble(tiv, t1, t2, t0, t3); \ + vpxor (6*32)(src), tiv, x6; \ + vmovdqu tiv, (6*32)(dst); \ + \ + gf128mul_x2_ble(tiv, t1, t2, t0, t3); \ + vpxor (7*32)(src), tiv, x7; \ + vmovdqu tiv, (7*32)(dst); \ + \ + vextracti128 $1, tiv, tivx; \ + gf128mul_x_ble(tivx, t1x, t2x); \ + vmovdqu tivx, (iv); + +#define store_xts_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7) \ + vpxor (0*32)(dst), x0, x0; \ + vpxor (1*32)(dst), x1, x1; \ + vpxor (2*32)(dst), x2, x2; \ + vpxor (3*32)(dst), x3, x3; \ + vpxor (4*32)(dst), x4, x4; \ + vpxor (5*32)(dst), x5, x5; \ + vpxor (6*32)(dst), x6, x6; \ + vpxor (7*32)(dst), x7, x7; \ + store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7); diff --git a/arch/x86/crypto/twofish-avx2-asm_64.S b/arch/x86/crypto/twofish-avx2-asm_64.S new file mode 100644 index 0000000..e1a83b9 --- /dev/null +++ b/arch/x86/crypto/twofish-avx2-asm_64.S @@ -0,0 +1,600 @@ +/* + * x86_64/AVX2 assembler optimized version of Twofish + * + * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.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/linkage.h> +#include "glue_helper-asm-avx2.S" + +.file "twofish-avx2-asm_64.S" + +.data +.align 16 + +.Lvpshufb_mask0: +.long 0x80808000 +.long 0x80808004 +.long 0x80808008 +.long 0x8080800c + +.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 + +/* structure of crypto context */ +#define s0 0 +#define s1 1024 +#define s2 2048 +#define s3 3072 +#define w 4096 +#define k 4128 + +/* register macros */ +#define CTX %rdi + +#define RS0 CTX +#define RS1 %r8 +#define RS2 %r9 +#define RS3 %r10 +#define RK %r11 +#define RW %rax +#define RROUND %r12 +#define RROUNDd %r12d + +#define RA0 %ymm8 +#define RB0 %ymm9 +#define RC0 %ymm10 +#define RD0 %ymm11 +#define RA1 %ymm12 +#define RB1 %ymm13 +#define RC1 %ymm14 +#define RD1 %ymm15 + +/* temp regs */ +#define RX0 %ymm0 +#define RY0 %ymm1 +#define RX1 %ymm2 +#define RY1 %ymm3 +#define RT0 %ymm4 +#define RIDX %ymm5 + +#define RX0x %xmm0 +#define RY0x %xmm1 +#define RX1x %xmm2 +#define RY1x %xmm3 +#define RT0x %xmm4 + +/* vpgatherdd mask and '-1' */ +#define RNOT %ymm6 + +/* byte mask, (-1 >> 24) */ +#define RBYTE %ymm7 + +/********************************************************************** + 16-way AVX2 twofish + **********************************************************************/ +#define init_round_constants() \ + vpcmpeqd RNOT, RNOT, RNOT; \ + vpsrld $24, RNOT, RBYTE; \ + leaq k(CTX), RK; \ + leaq w(CTX), RW; \ + leaq s1(CTX), RS1; \ + leaq s2(CTX), RS2; \ + leaq s3(CTX), RS3; \ + +#define g16(ab, rs0, rs1, rs2, rs3, xy) \ + vpand RBYTE, ab ## 0, RIDX; \ + vpgatherdd RNOT, (rs0, RIDX, 4), xy ## 0; \ + vpcmpeqd RNOT, RNOT, RNOT; \ + \ + vpand RBYTE, ab ## 1, RIDX; \ + vpgatherdd RNOT, (rs0, RIDX, 4), xy ## 1; \ + vpcmpeqd RNOT, RNOT, RNOT; \ + \ + vpsrld $8, ab ## 0, RIDX; \ + vpand RBYTE, RIDX, RIDX; \ + vpgatherdd RNOT, (rs1, RIDX, 4), RT0; \ + vpcmpeqd RNOT, RNOT, RNOT; \ + vpxor RT0, xy ## 0, xy ## 0; \ + \ + vpsrld $8, ab ## 1, RIDX; \ + vpand RBYTE, RIDX, RIDX; \ + vpgatherdd RNOT, (rs1, RIDX, 4), RT0; \ + vpcmpeqd RNOT, RNOT, RNOT; \ + vpxor RT0, xy ## 1, xy ## 1; \ + \ + vpsrld $16, ab ## 0, RIDX; \ + vpand RBYTE, RIDX, RIDX; \ + vpgatherdd RNOT, (rs2, RIDX, 4), RT0; \ + vpcmpeqd RNOT, RNOT, RNOT; \ + vpxor RT0, xy ## 0, xy ## 0; \ + \ + vpsrld $16, ab ## 1, RIDX; \ + vpand RBYTE, RIDX, RIDX; \ + vpgatherdd RNOT, (rs2, RIDX, 4), RT0; \ + vpcmpeqd RNOT, RNOT, RNOT; \ + vpxor RT0, xy ## 1, xy ## 1; \ + \ + vpsrld $24, ab ## 0, RIDX; \ + vpgatherdd RNOT, (rs3, RIDX, 4), RT0; \ + vpcmpeqd RNOT, RNOT, RNOT; \ + vpxor RT0, xy ## 0, xy ## 0; \ + \ + vpsrld $24, ab ## 1, RIDX; \ + vpgatherdd RNOT, (rs3, RIDX, 4), RT0; \ + vpcmpeqd RNOT, RNOT, RNOT; \ + vpxor RT0, xy ## 1, xy ## 1; + +#define g1_16(a, x) \ + g16(a, RS0, RS1, RS2, RS3, x); + +#define g2_16(b, y) \ + g16(b, RS1, RS2, RS3, RS0, y); + +#define encrypt_round_end16(a, b, c, d, nk) \ + vpaddd RY0, RX0, RX0; \ + vpaddd RX0, RY0, RY0; \ + vpbroadcastd nk(RK,RROUND,8), RT0; \ + vpaddd RT0, RX0, RX0; \ + vpbroadcastd 4+nk(RK,RROUND,8), RT0; \ + vpaddd RT0, RY0, RY0; \ + \ + vpxor RY0, d ## 0, d ## 0; \ + \ + vpxor RX0, c ## 0, c ## 0; \ + vpsrld $1, c ## 0, RT0; \ + vpslld $31, c ## 0, c ## 0; \ + vpor RT0, c ## 0, c ## 0; \ + \ + vpaddd RY1, RX1, RX1; \ + vpaddd RX1, RY1, RY1; \ + vpbroadcastd nk(RK,RROUND,8), RT0; \ + vpaddd RT0, RX1, RX1; \ + vpbroadcastd 4+nk(RK,RROUND,8), RT0; \ + vpaddd RT0, RY1, RY1; \ + \ + vpxor RY1, d ## 1, d ## 1; \ + \ + vpxor RX1, c ## 1, c ## 1; \ + vpsrld $1, c ## 1, RT0; \ + vpslld $31, c ## 1, c ## 1; \ + vpor RT0, c ## 1, c ## 1; \ + +#define encrypt_round16(a, b, c, d, nk) \ + g2_16(b, RY); \ + \ + vpslld $1, b ## 0, RT0; \ + vpsrld $31, b ## 0, b ## 0; \ + vpor RT0, b ## 0, b ## 0; \ + \ + vpslld $1, b ## 1, RT0; \ + vpsrld $31, b ## 1, b ## 1; \ + vpor RT0, b ## 1, b ## 1; \ + \ + g1_16(a, RX); \ + \ + encrypt_round_end16(a, b, c, d, nk); + +#define encrypt_round_first16(a, b, c, d, nk) \ + vpslld $1, d ## 0, RT0; \ + vpsrld $31, d ## 0, d ## 0; \ + vpor RT0, d ## 0, d ## 0; \ + \ + vpslld $1, d ## 1, RT0; \ + vpsrld $31, d ## 1, d ## 1; \ + vpor RT0, d ## 1, d ## 1; \ + \ + encrypt_round16(a, b, c, d, nk); + +#define encrypt_round_last16(a, b, c, d, nk) \ + g2_16(b, RY); \ + \ + g1_16(a, RX); \ + \ + encrypt_round_end16(a, b, c, d, nk); + +#define decrypt_round_end16(a, b, c, d, nk) \ + vpaddd RY0, RX0, RX0; \ + vpaddd RX0, RY0, RY0; \ + vpbroadcastd nk(RK,RROUND,8), RT0; \ + vpaddd RT0, RX0, RX0; \ + vpbroadcastd 4+nk(RK,RROUND,8), RT0; \ + vpaddd RT0, RY0, RY0; \ + \ + vpxor RX0, c ## 0, c ## 0; \ + \ + vpxor RY0, d ## 0, d ## 0; \ + vpsrld $1, d ## 0, RT0; \ + vpslld $31, d ## 0, d ## 0; \ + vpor RT0, d ## 0, d ## 0; \ + \ + vpaddd RY1, RX1, RX1; \ + vpaddd RX1, RY1, RY1; \ + vpbroadcastd nk(RK,RROUND,8), RT0; \ + vpaddd RT0, RX1, RX1; \ + vpbroadcastd 4+nk(RK,RROUND,8), RT0; \ + vpaddd RT0, RY1, RY1; \ + \ + vpxor RX1, c ## 1, c ## 1; \ + \ + vpxor RY1, d ## 1, d ## 1; \ + vpsrld $1, d ## 1, RT0; \ + vpslld $31, d ## 1, d ## 1; \ + vpor RT0, d ## 1, d ## 1; + +#define decrypt_round16(a, b, c, d, nk) \ + g1_16(a, RX); \ + \ + vpslld $1, a ## 0, RT0; \ + vpsrld $31, a ## 0, a ## 0; \ + vpor RT0, a ## 0, a ## 0; \ + \ + vpslld $1, a ## 1, RT0; \ + vpsrld $31, a ## 1, a ## 1; \ + vpor RT0, a ## 1, a ## 1; \ + \ + g2_16(b, RY); \ + \ + decrypt_round_end16(a, b, c, d, nk); + +#define decrypt_round_first16(a, b, c, d, nk) \ + vpslld $1, c ## 0, RT0; \ + vpsrld $31, c ## 0, c ## 0; \ + vpor RT0, c ## 0, c ## 0; \ + \ + vpslld $1, c ## 1, RT0; \ + vpsrld $31, c ## 1, c ## 1; \ + vpor RT0, c ## 1, c ## 1; \ + \ + decrypt_round16(a, b, c, d, nk) + +#define decrypt_round_last16(a, b, c, d, nk) \ + g1_16(a, RX); \ + \ + g2_16(b, RY); \ + \ + decrypt_round_end16(a, b, c, d, nk); + +#define encrypt_cycle16() \ + encrypt_round16(RA, RB, RC, RD, 0); \ + encrypt_round16(RC, RD, RA, RB, 8); + +#define encrypt_cycle_first16() \ + encrypt_round_first16(RA, RB, RC, RD, 0); \ + encrypt_round16(RC, RD, RA, RB, 8); + +#define encrypt_cycle_last16() \ + encrypt_round16(RA, RB, RC, RD, 0); \ + encrypt_round_last16(RC, RD, RA, RB, 8); + +#define decrypt_cycle16(n) \ + decrypt_round16(RC, RD, RA, RB, 8); \ + decrypt_round16(RA, RB, RC, RD, 0); + +#define decrypt_cycle_first16(n) \ + decrypt_round_first16(RC, RD, RA, RB, 8); \ + decrypt_round16(RA, RB, RC, RD, 0); + +#define decrypt_cycle_last16(n) \ + decrypt_round16(RC, RD, RA, RB, 8); \ + decrypt_round_last16(RA, RB, RC, RD, 0); + +#define transpose_4x4(x0,x1,x2,x3,t1,t2) \ + vpunpckhdq x1, x0, t2; \ + vpunpckldq x1, x0, x0; \ + \ + vpunpckldq x3, x2, t1; \ + vpunpckhdq x3, x2, x2; \ + \ + vpunpckhqdq t1, x0, x1; \ + vpunpcklqdq t1, x0, x0; \ + \ + vpunpckhqdq x2, t2, x3; \ + vpunpcklqdq x2, t2, x2; + +#define read_blocks8(offs,a,b,c,d) \ + transpose_4x4(a, b, c, d, RX0, RY0); + +#define write_blocks8(offs,a,b,c,d) \ + transpose_4x4(a, b, c, d, RX0, RY0); + +#define inpack_enc8(a,b,c,d) \ + vpbroadcastd 4*0(RW), RT0; \ + vpxor RT0, a, a; \ + \ + vpbroadcastd 4*1(RW), RT0; \ + vpxor RT0, b, b; \ + \ + vpbroadcastd 4*2(RW), RT0; \ + vpxor RT0, c, c; \ + \ + vpbroadcastd 4*3(RW), RT0; \ + vpxor RT0, d, d; + +#define outunpack_enc8(a,b,c,d) \ + vpbroadcastd 4*4(RW), RX0; \ + vpbroadcastd 4*5(RW), RY0; \ + vpxor RX0, c, RX0; \ + vpxor RY0, d, RY0; \ + \ + vpbroadcastd 4*6(RW), RT0; \ + vpxor RT0, a, c; \ + vpbroadcastd 4*7(RW), RT0; \ + vpxor RT0, b, d; \ + \ + vmovdqa RX0, a; \ + vmovdqa RY0, b; + +#define inpack_dec8(a,b,c,d) \ + vpbroadcastd 4*4(RW), RX0; \ + vpbroadcastd 4*5(RW), RY0; \ + vpxor RX0, a, RX0; \ + vpxor RY0, b, RY0; \ + \ + vpbroadcastd 4*6(RW), RT0; \ + vpxor RT0, c, a; \ + vpbroadcastd 4*7(RW), RT0; \ + vpxor RT0, d, b; \ + \ + vmovdqa RX0, c; \ + vmovdqa RY0, d; + +#define outunpack_dec8(a,b,c,d) \ + vpbroadcastd 4*0(RW), RT0; \ + vpxor RT0, a, a; \ + \ + vpbroadcastd 4*1(RW), RT0; \ + vpxor RT0, b, b; \ + \ + vpbroadcastd 4*2(RW), RT0; \ + vpxor RT0, c, c; \ + \ + vpbroadcastd 4*3(RW), RT0; \ + vpxor RT0, d, d; + +#define read_blocks16(a,b,c,d) \ + read_blocks8(0, a ## 0, b ## 0, c ## 0, d ## 0); \ + read_blocks8(8, a ## 1, b ## 1, c ## 1, d ## 1); + +#define write_blocks16(a,b,c,d) \ + write_blocks8(0, a ## 0, b ## 0, c ## 0, d ## 0); \ + write_blocks8(8, a ## 1, b ## 1, c ## 1, d ## 1); + +#define xor_blocks16(a,b,c,d) \ + xor_blocks8(0, a ## 0, b ## 0, c ## 0, d ## 0); \ + xor_blocks8(8, a ## 1, b ## 1, c ## 1, d ## 1); + +#define inpack_enc16(a,b,c,d) \ + inpack_enc8(a ## 0, b ## 0, c ## 0, d ## 0); \ + inpack_enc8(a ## 1, b ## 1, c ## 1, d ## 1); + +#define outunpack_enc16(a,b,c,d) \ + outunpack_enc8(a ## 0, b ## 0, c ## 0, d ## 0); \ + outunpack_enc8(a ## 1, b ## 1, c ## 1, d ## 1); + +#define inpack_dec16(a,b,c,d) \ + inpack_dec8(a ## 0, b ## 0, c ## 0, d ## 0); \ + inpack_dec8(a ## 1, b ## 1, c ## 1, d ## 1); + +#define outunpack_dec16(a,b,c,d) \ + outunpack_dec8(a ## 0, b ## 0, c ## 0, d ## 0); \ + outunpack_dec8(a ## 1, b ## 1, c ## 1, d ## 1); + +.align 8 +__twofish_enc_blk16: + /* input: + * %rdi: ctx, CTX + * RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1: plaintext + * output: + * RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1: ciphertext + */ + init_round_constants(); + + read_blocks16(RA, RB, RC, RD); + inpack_enc16(RA, RB, RC, RD); + + xorl RROUNDd, RROUNDd; + encrypt_cycle_first16(); + movl $2, RROUNDd; + +.align 4 +.L__enc_loop: + encrypt_cycle16(); + + addl $2, RROUNDd; + cmpl $14, RROUNDd; + jne .L__enc_loop; + + encrypt_cycle_last16(); + + outunpack_enc16(RA, RB, RC, RD); + write_blocks16(RA, RB, RC, RD); + + ret; +ENDPROC(__twofish_enc_blk16) + +.align 8 +__twofish_dec_blk16: + /* input: + * %rdi: ctx, CTX + * RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1: ciphertext + * output: + * RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1: plaintext + */ + init_round_constants(); + + read_blocks16(RA, RB, RC, RD); + inpack_dec16(RA, RB, RC, RD); + + movl $14, RROUNDd; + decrypt_cycle_first16(); + movl $12, RROUNDd; + +.align 4 +.L__dec_loop: + decrypt_cycle16(); + + addl $-2, RROUNDd; + jnz .L__dec_loop; + + decrypt_cycle_last16(); + + outunpack_dec16(RA, RB, RC, RD); + write_blocks16(RA, RB, RC, RD); + + ret; +ENDPROC(__twofish_dec_blk16) + +ENTRY(twofish_ecb_enc_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + */ + + vzeroupper; + pushq %r12; + + load_16way(%rdx, RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1); + + call __twofish_enc_blk16; + + store_16way(%rsi, RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1); + + popq %r12; + vzeroupper; + + ret; +ENDPROC(twofish_ecb_enc_16way) + +ENTRY(twofish_ecb_dec_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + */ + + vzeroupper; + pushq %r12; + + load_16way(%rdx, RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1); + + call __twofish_dec_blk16; + + store_16way(%rsi, RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1); + + popq %r12; + vzeroupper; + + ret; +ENDPROC(twofish_ecb_dec_16way) + +ENTRY(twofish_cbc_dec_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + */ + + vzeroupper; + pushq %r12; + + load_16way(%rdx, RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1); + + call __twofish_dec_blk16; + + store_cbc_16way(%rdx, %rsi, RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1, + RX0); + + popq %r12; + vzeroupper; + + ret; +ENDPROC(twofish_cbc_dec_16way) + +ENTRY(twofish_ctr_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst (16 blocks) + * %rdx: src (16 blocks) + * %rcx: iv (little endian, 128bit) + */ + + vzeroupper; + pushq %r12; + + load_ctr_16way(%rcx, .Lbswap128_mask, RA0, RB0, RC0, RD0, RA1, RB1, RC1, + RD1, RX0, RX0x, RX1, RX1x, RY0, RY0x, RY1, RY1x, RNOT, + RBYTE); + + call __twofish_enc_blk16; + + store_ctr_16way(%rdx, %rsi, RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1); + + popq %r12; + vzeroupper; + + ret; +ENDPROC(twofish_ctr_16way) + +.align 8 +twofish_xts_crypt_16way: + /* input: + * %rdi: ctx, CTX + * %rsi: dst (16 blocks) + * %rdx: src (16 blocks) + * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) + * %r8: pointer to __twofish_enc_blk16 or __twofish_dec_blk16 + */ + + vzeroupper; + pushq %r12; + + load_xts_16way(%rcx, %rdx, %rsi, RA0, RB0, RC0, RD0, RA1, RB1, RC1, + RD1, RX0, RX0x, RX1, RX1x, RY0, RY0x, RY1, RY1x, RNOT, + .Lxts_gf128mul_and_shl1_mask_0, + .Lxts_gf128mul_and_shl1_mask_1); + + call *%r8; + + store_xts_16way(%rsi, RA0, RB0, RC0, RD0, RA1, RB1, RC1, RD1); + + popq %r12; + vzeroupper; + + ret; +ENDPROC(twofish_xts_crypt_16way) + +ENTRY(twofish_xts_enc_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst (16 blocks) + * %rdx: src (16 blocks) + * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) + */ + leaq __twofish_enc_blk16, %r8; + jmp twofish_xts_crypt_16way; +ENDPROC(twofish_xts_enc_16way) + +ENTRY(twofish_xts_dec_16way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst (16 blocks) + * %rdx: src (16 blocks) + * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) + */ + leaq __twofish_dec_blk16, %r8; + jmp twofish_xts_crypt_16way; +ENDPROC(twofish_xts_dec_16way) diff --git a/arch/x86/crypto/twofish_avx2_glue.c b/arch/x86/crypto/twofish_avx2_glue.c new file mode 100644 index 0000000..ce33b5b --- /dev/null +++ b/arch/x86/crypto/twofish_avx2_glue.c @@ -0,0 +1,584 @@ +/* + * Glue Code for x86_64/AVX2 assembler optimized version of Twofish + * + * 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/twofish.h> +#include <crypto/lrw.h> +#include <crypto/xts.h> +#include <asm/xcr.h> +#include <asm/xsave.h> +#include <asm/crypto/twofish.h> +#include <asm/crypto/ablk_helper.h> +#include <asm/crypto/glue_helper.h> +#include <crypto/scatterwalk.h> + +#define TF_AVX2_PARALLEL_BLOCKS 16 + +/* 16-way AVX2 parallel cipher functions */ +asmlinkage void twofish_ecb_enc_16way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src); +asmlinkage void twofish_ecb_dec_16way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src); +asmlinkage void twofish_cbc_dec_16way(void *ctx, u128 *dst, const u128 *src); + +asmlinkage void twofish_ctr_16way(void *ctx, u128 *dst, const u128 *src, + le128 *iv); + +asmlinkage void twofish_xts_enc_16way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); +asmlinkage void twofish_xts_dec_16way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); + +static inline void twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src) +{ + __twofish_enc_blk_3way(ctx, dst, src, false); +} + +static const struct common_glue_ctx twofish_enc = { + .num_funcs = 4, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_ecb_enc_16way) } + }, { + .num_blocks = 8, + .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_ecb_enc_8way) } + }, { + .num_blocks = 3, + .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk_3way) } + }, { + .num_blocks = 1, + .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk) } + } } +}; + +static const struct common_glue_ctx twofish_ctr = { + .num_funcs = 4, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_ctr_16way) } + }, { + .num_blocks = 8, + .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_ctr_8way) } + }, { + .num_blocks = 3, + .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_enc_blk_ctr_3way) } + }, { + .num_blocks = 1, + .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_enc_blk_ctr) } + } } +}; + +static const struct common_glue_ctx twofish_enc_xts = { + .num_funcs = 3, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_enc_16way) } + }, { + .num_blocks = 8, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_enc_8way) } + }, { + .num_blocks = 1, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_enc) } + } } +}; + +static const struct common_glue_ctx twofish_dec = { + .num_funcs = 4, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_ecb_dec_16way) } + }, { + .num_blocks = 8, + .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_ecb_dec_8way) } + }, { + .num_blocks = 3, + .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_dec_blk_3way) } + }, { + .num_blocks = 1, + .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_dec_blk) } + } } +}; + +static const struct common_glue_ctx twofish_dec_cbc = { + .num_funcs = 4, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_cbc_dec_16way) } + }, { + .num_blocks = 8, + .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_cbc_dec_8way) } + }, { + .num_blocks = 3, + .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_dec_blk_cbc_3way) } + }, { + .num_blocks = 1, + .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_dec_blk) } + } } +}; + +static const struct common_glue_ctx twofish_dec_xts = { + .num_funcs = 3, + .fpu_blocks_limit = 8, + + .funcs = { { + .num_blocks = 16, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_dec_16way) } + }, { + .num_blocks = 8, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_dec_8way) } + }, { + .num_blocks = 1, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_dec) } + } } +}; + +static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + return glue_ecb_crypt_128bit(&twofish_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(&twofish_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(twofish_enc_blk), 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(&twofish_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(&twofish_ctr, desc, dst, src, nbytes); +} + +static inline bool twofish_fpu_begin(bool fpu_enabled, unsigned int nbytes) +{ + /* since reusing AVX functions, starts using FPU at 8 parallel blocks */ + return glue_fpu_begin(TF_BLOCK_SIZE, 8, NULL, fpu_enabled, nbytes); +} + +static inline void twofish_fpu_end(bool fpu_enabled) +{ + glue_fpu_end(fpu_enabled); +} + +struct crypt_priv { + struct twofish_ctx *ctx; + bool fpu_enabled; +}; + +static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) +{ + const unsigned int bsize = TF_BLOCK_SIZE; + struct crypt_priv *ctx = priv; + int i; + + ctx->fpu_enabled = twofish_fpu_begin(ctx->fpu_enabled, nbytes); + + while (nbytes >= TF_AVX2_PARALLEL_BLOCKS * bsize) { + twofish_ecb_enc_16way(ctx->ctx, srcdst, srcdst); + srcdst += bsize * TF_AVX2_PARALLEL_BLOCKS; + nbytes -= bsize * TF_AVX2_PARALLEL_BLOCKS; + } + + while (nbytes >= 8 * bsize) { + twofish_ecb_enc_8way(ctx->ctx, srcdst, srcdst); + srcdst += bsize * 8; + nbytes -= bsize * 8; + } + + while (nbytes >= 3 * bsize) { + twofish_enc_blk_3way(ctx->ctx, srcdst, srcdst); + srcdst += bsize * 3; + nbytes -= bsize * 3; + } + + for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) + twofish_enc_blk(ctx->ctx, srcdst, srcdst); +} + +static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) +{ + const unsigned int bsize = TF_BLOCK_SIZE; + struct crypt_priv *ctx = priv; + int i; + + ctx->fpu_enabled = twofish_fpu_begin(ctx->fpu_enabled, nbytes); + + while (nbytes >= TF_AVX2_PARALLEL_BLOCKS * bsize) { + twofish_ecb_dec_16way(ctx->ctx, srcdst, srcdst); + srcdst += bsize * TF_AVX2_PARALLEL_BLOCKS; + nbytes -= bsize * TF_AVX2_PARALLEL_BLOCKS; + } + + while (nbytes >= 8 * bsize) { + twofish_ecb_dec_8way(ctx->ctx, srcdst, srcdst); + srcdst += bsize * 8; + nbytes -= bsize * 8; + } + + while (nbytes >= 3 * bsize) { + twofish_dec_blk_3way(ctx->ctx, srcdst, srcdst); + srcdst += bsize * 3; + nbytes -= bsize * 3; + } + + for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) + twofish_dec_blk(ctx->ctx, srcdst, srcdst); +} + +static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct twofish_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[TF_AVX2_PARALLEL_BLOCKS]; + struct crypt_priv crypt_ctx = { + .ctx = &ctx->twofish_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); + twofish_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 twofish_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[TF_AVX2_PARALLEL_BLOCKS]; + struct crypt_priv crypt_ctx = { + .ctx = &ctx->twofish_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, dst, src, nbytes, &req); + twofish_fpu_end(crypt_ctx.fpu_enabled); + + return ret; +} + +static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct twofish_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + + return glue_xts_crypt_128bit(&twofish_enc_xts, desc, dst, src, nbytes, + XTS_TWEAK_CAST(twofish_enc_blk), + &ctx->tweak_ctx, &ctx->crypt_ctx); +} + +static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct twofish_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + + return glue_xts_crypt_128bit(&twofish_dec_xts, desc, dst, src, nbytes, + XTS_TWEAK_CAST(twofish_enc_blk), + &ctx->tweak_ctx, &ctx->crypt_ctx); +} + +static struct crypto_alg tf_algs[10] = { { + .cra_name = "__ecb-twofish-avx2", + .cra_driver_name = "__driver-ecb-twofish-avx2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct twofish_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_u = { + .blkcipher = { + .min_keysize = TF_MIN_KEY_SIZE, + .max_keysize = TF_MAX_KEY_SIZE, + .setkey = twofish_setkey, + .encrypt = ecb_encrypt, + .decrypt = ecb_decrypt, + }, + }, +}, { + .cra_name = "__cbc-twofish-avx2", + .cra_driver_name = "__driver-cbc-twofish-avx2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct twofish_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_u = { + .blkcipher = { + .min_keysize = TF_MIN_KEY_SIZE, + .max_keysize = TF_MAX_KEY_SIZE, + .setkey = twofish_setkey, + .encrypt = cbc_encrypt, + .decrypt = cbc_decrypt, + }, + }, +}, { + .cra_name = "__ctr-twofish-avx2", + .cra_driver_name = "__driver-ctr-twofish-avx2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct twofish_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_u = { + .blkcipher = { + .min_keysize = TF_MIN_KEY_SIZE, + .max_keysize = TF_MAX_KEY_SIZE, + .ivsize = TF_BLOCK_SIZE, + .setkey = twofish_setkey, + .encrypt = ctr_crypt, + .decrypt = ctr_crypt, + }, + }, +}, { + .cra_name = "__lrw-twofish-avx2", + .cra_driver_name = "__driver-lrw-twofish-avx2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct twofish_lrw_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_exit = lrw_twofish_exit_tfm, + .cra_u = { + .blkcipher = { + .min_keysize = TF_MIN_KEY_SIZE + + TF_BLOCK_SIZE, + .max_keysize = TF_MAX_KEY_SIZE + + TF_BLOCK_SIZE, + .ivsize = TF_BLOCK_SIZE, + .setkey = lrw_twofish_setkey, + .encrypt = lrw_encrypt, + .decrypt = lrw_decrypt, + }, + }, +}, { + .cra_name = "__xts-twofish-avx2", + .cra_driver_name = "__driver-xts-twofish-avx2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct twofish_xts_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_u = { + .blkcipher = { + .min_keysize = TF_MIN_KEY_SIZE * 2, + .max_keysize = TF_MAX_KEY_SIZE * 2, + .ivsize = TF_BLOCK_SIZE, + .setkey = xts_twofish_setkey, + .encrypt = xts_encrypt, + .decrypt = xts_decrypt, + }, + }, +}, { + .cra_name = "ecb(twofish)", + .cra_driver_name = "ecb-twofish-avx2", + .cra_priority = 500, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_helper_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_init = ablk_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = TF_MIN_KEY_SIZE, + .max_keysize = TF_MAX_KEY_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}, { + .cra_name = "cbc(twofish)", + .cra_driver_name = "cbc-twofish-avx2", + .cra_priority = 500, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_helper_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_init = ablk_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = TF_MIN_KEY_SIZE, + .max_keysize = TF_MAX_KEY_SIZE, + .ivsize = TF_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = __ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}, { + .cra_name = "ctr(twofish)", + .cra_driver_name = "ctr-twofish-avx2", + .cra_priority = 500, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct async_helper_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_init = ablk_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = TF_MIN_KEY_SIZE, + .max_keysize = TF_MAX_KEY_SIZE, + .ivsize = TF_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_encrypt, + .geniv = "chainiv", + }, + }, +}, { + .cra_name = "lrw(twofish)", + .cra_driver_name = "lrw-twofish-avx2", + .cra_priority = 500, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_helper_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_init = ablk_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = TF_MIN_KEY_SIZE + + TF_BLOCK_SIZE, + .max_keysize = TF_MAX_KEY_SIZE + + TF_BLOCK_SIZE, + .ivsize = TF_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}, { + .cra_name = "xts(twofish)", + .cra_driver_name = "xts-twofish-avx2", + .cra_priority = 500, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_helper_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_init = ablk_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = TF_MIN_KEY_SIZE * 2, + .max_keysize = TF_MAX_KEY_SIZE * 2, + .ivsize = TF_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +} }; + +static int __init init(void) +{ + u64 xcr0; + + if (!cpu_has_avx2 || !cpu_has_osxsave) { + pr_info("AVX2 instructions are not detected.\n"); + return -ENODEV; + } + + xcr0 = xgetbv(XCR_XFEATURE_ENABLED_MASK); + if ((xcr0 & (XSTATE_SSE | XSTATE_YMM)) != (XSTATE_SSE | XSTATE_YMM)) { + pr_info("AVX2 detected but unusable.\n"); + return -ENODEV; + } + + return crypto_register_algs(tf_algs, ARRAY_SIZE(tf_algs)); +} + +static void __exit fini(void) +{ + crypto_unregister_algs(tf_algs, ARRAY_SIZE(tf_algs)); +} + +module_init(init); +module_exit(fini); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Twofish Cipher Algorithm, AVX2 optimized"); +MODULE_ALIAS("twofish"); +MODULE_ALIAS("twofish-asm"); 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 = { |