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@xxxxxx>
---
arch/x86/crypto/Makefile | 2
arch/x86/crypto/glue_helper-asm-avx2.S | 180 ++++++++++
arch/x86/crypto/twofish-avx2-asm_64.S | 600 ++++++++++++++++++++++++++++++++
arch/x86/crypto/twofish_avx2_glue.c | 584 +++++++++++++++++++++++++++++++
arch/x86/crypto/twofish_avx_glue.c | 14 +
arch/x86/include/asm/crypto/twofish.h | 18 +
crypto/Kconfig | 24 +
crypto/testmgr.c | 12 +
8 files changed, 1432 insertions(+), 2 deletions(-)
create mode 100644 arch/x86/crypto/glue_helper-asm-avx2.S
create mode 100644 arch/x86/crypto/twofish-avx2-asm_64.S
create mode 100644 arch/x86/crypto/twofish_avx2_glue.c
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@xxxxxxxx>
+ *
+ * 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@xxxxxx>
+ *
+ * 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@xxxxxxxx>
+ *
+ * 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 = {
diff --git a/arch/x86/include/asm/crypto/twofish.h b/arch/x86/include/asm/crypto/twofish.h
index 878c51c..e655c60 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 */
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 6b9564f..1ba48dd 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1250,6 +1250,30 @@ config CRYPTO_TWOFISH_AVX_X86_64
See also:
<http://www.schneier.com/twofish.html>
+config CRYPTO_TWOFISH_AVX2_X86_64
+ tristate "Twofish cipher algorithm (x86_64/AVX2)"
+ depends on X86 && 64BIT
+ select CRYPTO_ALGAPI
+ select CRYPTO_CRYPTD
+ select CRYPTO_ABLK_HELPER_X86
+ select CRYPTO_GLUE_HELPER_X86
+ select CRYPTO_TWOFISH_COMMON
+ select CRYPTO_TWOFISH_X86_64
+ select CRYPTO_TWOFISH_X86_64_3WAY
+ select CRYPTO_TWOFISH_AVX_X86_64
+ select CRYPTO_LRW
+ select CRYPTO_XTS
+ help
+ Twofish cipher algorithm (x86_64/AVX2).
+
+ Twofish was submitted as an AES (Advanced Encryption Standard)
+ candidate cipher by researchers at CounterPane Systems. It is a
+ 16 round block cipher supporting key sizes of 128, 192, and 256
+ bits.
+
+ See also:
+ <http://www.schneier.com/twofish.html>
+
comment "Compression"
config CRYPTO_DEFLATE
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index f3effb4..fea7841 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -1651,6 +1651,9 @@ static const struct alg_test_desc alg_test_descs[] = {
.alg = "__cbc-twofish-avx",
.test = alg_test_null,
}, {
+ .alg = "__cbc-twofish-avx2",
+ .test = alg_test_null,
+ }, {
.alg = "__driver-cbc-aes-aesni",
.test = alg_test_null,
.fips_allowed = 1,
@@ -1676,6 +1679,9 @@ static const struct alg_test_desc alg_test_descs[] = {
.alg = "__driver-cbc-twofish-avx",
.test = alg_test_null,
}, {
+ .alg = "__driver-cbc-twofish-avx2",
+ .test = alg_test_null,
+ }, {
.alg = "__driver-ecb-aes-aesni",
.test = alg_test_null,
.fips_allowed = 1,
@@ -1701,6 +1707,9 @@ static const struct alg_test_desc alg_test_descs[] = {
.alg = "__driver-ecb-twofish-avx",
.test = alg_test_null,
}, {
+ .alg = "__driver-ecb-twofish-avx2",
+ .test = alg_test_null,
+ }, {
.alg = "__ghash-pclmulqdqni",
.test = alg_test_null,
.fips_allowed = 1,
@@ -1985,6 +1994,9 @@ static const struct alg_test_desc alg_test_descs[] = {
.alg = "cryptd(__driver-ecb-twofish-avx)",
.test = alg_test_null,
}, {
+ .alg = "cryptd(__driver-ecb-twofish-avx2)",
+ .test = alg_test_null,
+ }, {
.alg = "cryptd(__driver-gcm-aes-aesni)",
.test = alg_test_null,
.fips_allowed = 1,
--
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