diff options
| -rw-r--r-- | arch/x86/crypto/Makefile | 1 | ||||
| -rw-r--r-- | arch/x86/crypto/chacha20-avx2-x86_64.S | 443 | ||||
| -rw-r--r-- | arch/x86/crypto/chacha20_glue.c | 19 | ||||
| -rw-r--r-- | crypto/Kconfig | 2 |
4 files changed, 464 insertions, 1 deletions
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile index b09e9a4cea3e..ce39b3c872b1 100644 --- a/arch/x86/crypto/Makefile +++ b/arch/x86/crypto/Makefile @@ -77,6 +77,7 @@ endif ifeq ($(avx2_supported),yes) camellia-aesni-avx2-y := camellia-aesni-avx2-asm_64.o camellia_aesni_avx2_glue.o + chacha20-x86_64-y += chacha20-avx2-x86_64.o serpent-avx2-y := serpent-avx2-asm_64.o serpent_avx2_glue.o endif diff --git a/arch/x86/crypto/chacha20-avx2-x86_64.S b/arch/x86/crypto/chacha20-avx2-x86_64.S new file mode 100644 index 000000000000..16694e625f77 --- /dev/null +++ b/arch/x86/crypto/chacha20-avx2-x86_64.S @@ -0,0 +1,443 @@ +/* + * ChaCha20 256-bit cipher algorithm, RFC7539, x64 AVX2 functions + * + * Copyright (C) 2015 Martin Willi + * + * 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> + +.data +.align 32 + +ROT8: .octa 0x0e0d0c0f0a09080b0605040702010003 + .octa 0x0e0d0c0f0a09080b0605040702010003 +ROT16: .octa 0x0d0c0f0e09080b0a0504070601000302 + .octa 0x0d0c0f0e09080b0a0504070601000302 +CTRINC: .octa 0x00000003000000020000000100000000 + .octa 0x00000007000000060000000500000004 + +.text + +ENTRY(chacha20_8block_xor_avx2) + # %rdi: Input state matrix, s + # %rsi: 8 data blocks output, o + # %rdx: 8 data blocks input, i + + # This function encrypts eight consecutive ChaCha20 blocks by loading + # the state matrix in AVX registers eight times. As we need some + # scratch registers, we save the first four registers on the stack. The + # algorithm performs each operation on the corresponding word of each + # state matrix, hence requires no word shuffling. For final XORing step + # we transpose the matrix by interleaving 32-, 64- and then 128-bit + # words, which allows us to do XOR in AVX registers. 8/16-bit word + # rotation is done with the slightly better performing byte shuffling, + # 7/12-bit word rotation uses traditional shift+OR. + + vzeroupper + # 4 * 32 byte stack, 32-byte aligned + mov %rsp, %r8 + and $~31, %rsp + sub $0x80, %rsp + + # x0..15[0-7] = s[0..15] + vpbroadcastd 0x00(%rdi),%ymm0 + vpbroadcastd 0x04(%rdi),%ymm1 + vpbroadcastd 0x08(%rdi),%ymm2 + vpbroadcastd 0x0c(%rdi),%ymm3 + vpbroadcastd 0x10(%rdi),%ymm4 + vpbroadcastd 0x14(%rdi),%ymm5 + vpbroadcastd 0x18(%rdi),%ymm6 + vpbroadcastd 0x1c(%rdi),%ymm7 + vpbroadcastd 0x20(%rdi),%ymm8 + vpbroadcastd 0x24(%rdi),%ymm9 + vpbroadcastd 0x28(%rdi),%ymm10 + vpbroadcastd 0x2c(%rdi),%ymm11 + vpbroadcastd 0x30(%rdi),%ymm12 + vpbroadcastd 0x34(%rdi),%ymm13 + vpbroadcastd 0x38(%rdi),%ymm14 + vpbroadcastd 0x3c(%rdi),%ymm15 + # x0..3 on stack + vmovdqa %ymm0,0x00(%rsp) + vmovdqa %ymm1,0x20(%rsp) + vmovdqa %ymm2,0x40(%rsp) + vmovdqa %ymm3,0x60(%rsp) + + vmovdqa CTRINC(%rip),%ymm1 + vmovdqa ROT8(%rip),%ymm2 + vmovdqa ROT16(%rip),%ymm3 + + # x12 += counter values 0-3 + vpaddd %ymm1,%ymm12,%ymm12 + + mov $10,%ecx + +.Ldoubleround8: + # x0 += x4, x12 = rotl32(x12 ^ x0, 16) + vpaddd 0x00(%rsp),%ymm4,%ymm0 + vmovdqa %ymm0,0x00(%rsp) + vpxor %ymm0,%ymm12,%ymm12 + vpshufb %ymm3,%ymm12,%ymm12 + # x1 += x5, x13 = rotl32(x13 ^ x1, 16) + vpaddd 0x20(%rsp),%ymm5,%ymm0 + vmovdqa %ymm0,0x20(%rsp) + vpxor %ymm0,%ymm13,%ymm13 + vpshufb %ymm3,%ymm13,%ymm13 + # x2 += x6, x14 = rotl32(x14 ^ x2, 16) + vpaddd 0x40(%rsp),%ymm6,%ymm0 + vmovdqa %ymm0,0x40(%rsp) + vpxor %ymm0,%ymm14,%ymm14 + vpshufb %ymm3,%ymm14,%ymm14 + # x3 += x7, x15 = rotl32(x15 ^ x3, 16) + vpaddd 0x60(%rsp),%ymm7,%ymm0 + vmovdqa %ymm0,0x60(%rsp) + vpxor %ymm0,%ymm15,%ymm15 + vpshufb %ymm3,%ymm15,%ymm15 + + # x8 += x12, x4 = rotl32(x4 ^ x8, 12) + vpaddd %ymm12,%ymm8,%ymm8 + vpxor %ymm8,%ymm4,%ymm4 + vpslld $12,%ymm4,%ymm0 + vpsrld $20,%ymm4,%ymm4 + vpor %ymm0,%ymm4,%ymm4 + # x9 += x13, x5 = rotl32(x5 ^ x9, 12) + vpaddd %ymm13,%ymm9,%ymm9 + vpxor %ymm9,%ymm5,%ymm5 + vpslld $12,%ymm5,%ymm0 + vpsrld $20,%ymm5,%ymm5 + vpor %ymm0,%ymm5,%ymm5 + # x10 += x14, x6 = rotl32(x6 ^ x10, 12) + vpaddd %ymm14,%ymm10,%ymm10 + vpxor %ymm10,%ymm6,%ymm6 + vpslld $12,%ymm6,%ymm0 + vpsrld $20,%ymm6,%ymm6 + vpor %ymm0,%ymm6,%ymm6 + # x11 += x15, x7 = rotl32(x7 ^ x11, 12) + vpaddd %ymm15,%ymm11,%ymm11 + vpxor %ymm11,%ymm7,%ymm7 + vpslld $12,%ymm7,%ymm0 + vpsrld $20,%ymm7,%ymm7 + vpor %ymm0,%ymm7,%ymm7 + + # x0 += x4, x12 = rotl32(x12 ^ x0, 8) + vpaddd 0x00(%rsp),%ymm4,%ymm0 + vmovdqa %ymm0,0x00(%rsp) + vpxor %ymm0,%ymm12,%ymm12 + vpshufb %ymm2,%ymm12,%ymm12 + # x1 += x5, x13 = rotl32(x13 ^ x1, 8) + vpaddd 0x20(%rsp),%ymm5,%ymm0 + vmovdqa %ymm0,0x20(%rsp) + vpxor %ymm0,%ymm13,%ymm13 + vpshufb %ymm2,%ymm13,%ymm13 + # x2 += x6, x14 = rotl32(x14 ^ x2, 8) + vpaddd 0x40(%rsp),%ymm6,%ymm0 + vmovdqa %ymm0,0x40(%rsp) + vpxor %ymm0,%ymm14,%ymm14 + vpshufb %ymm2,%ymm14,%ymm14 + # x3 += x7, x15 = rotl32(x15 ^ x3, 8) + vpaddd 0x60(%rsp),%ymm7,%ymm0 + vmovdqa %ymm0,0x60(%rsp) + vpxor %ymm0,%ymm15,%ymm15 + vpshufb %ymm2,%ymm15,%ymm15 + + # x8 += x12, x4 = rotl32(x4 ^ x8, 7) + vpaddd %ymm12,%ymm8,%ymm8 + vpxor %ymm8,%ymm4,%ymm4 + vpslld $7,%ymm4,%ymm0 + vpsrld $25,%ymm4,%ymm4 + vpor %ymm0,%ymm4,%ymm4 + # x9 += x13, x5 = rotl32(x5 ^ x9, 7) + vpaddd %ymm13,%ymm9,%ymm9 + vpxor %ymm9,%ymm5,%ymm5 + vpslld $7,%ymm5,%ymm0 + vpsrld $25,%ymm5,%ymm5 + vpor %ymm0,%ymm5,%ymm5 + # x10 += x14, x6 = rotl32(x6 ^ x10, 7) + vpaddd %ymm14,%ymm10,%ymm10 + vpxor %ymm10,%ymm6,%ymm6 + vpslld $7,%ymm6,%ymm0 + vpsrld $25,%ymm6,%ymm6 + vpor %ymm0,%ymm6,%ymm6 + # x11 += x15, x7 = rotl32(x7 ^ x11, 7) + vpaddd %ymm15,%ymm11,%ymm11 + vpxor %ymm11,%ymm7,%ymm7 + vpslld $7,%ymm7,%ymm0 + vpsrld $25,%ymm7,%ymm7 + vpor %ymm0,%ymm7,%ymm7 + + # x0 += x5, x15 = rotl32(x15 ^ x0, 16) + vpaddd 0x00(%rsp),%ymm5,%ymm0 + vmovdqa %ymm0,0x00(%rsp) + vpxor %ymm0,%ymm15,%ymm15 + vpshufb %ymm3,%ymm15,%ymm15 + # x1 += x6, x12 = rotl32(x12 ^ x1, 16)%ymm0 + vpaddd 0x20(%rsp),%ymm6,%ymm0 + vmovdqa %ymm0,0x20(%rsp) + vpxor %ymm0,%ymm12,%ymm12 + vpshufb %ymm3,%ymm12,%ymm12 + # x2 += x7, x13 = rotl32(x13 ^ x2, 16) + vpaddd 0x40(%rsp),%ymm7,%ymm0 + vmovdqa %ymm0,0x40(%rsp) + vpxor %ymm0,%ymm13,%ymm13 + vpshufb %ymm3,%ymm13,%ymm13 + # x3 += x4, x14 = rotl32(x14 ^ x3, 16) + vpaddd 0x60(%rsp),%ymm4,%ymm0 + vmovdqa %ymm0,0x60(%rsp) + vpxor %ymm0,%ymm14,%ymm14 + vpshufb %ymm3,%ymm14,%ymm14 + + # x10 += x15, x5 = rotl32(x5 ^ x10, 12) + vpaddd %ymm15,%ymm10,%ymm10 + vpxor %ymm10,%ymm5,%ymm5 + vpslld $12,%ymm5,%ymm0 + vpsrld $20,%ymm5,%ymm5 + vpor %ymm0,%ymm5,%ymm5 + # x11 += x12, x6 = rotl32(x6 ^ x11, 12) + vpaddd %ymm12,%ymm11,%ymm11 + vpxor %ymm11,%ymm6,%ymm6 + vpslld $12,%ymm6,%ymm0 + vpsrld $20,%ymm6,%ymm6 + vpor %ymm0,%ymm6,%ymm6 + # x8 += x13, x7 = rotl32(x7 ^ x8, 12) + vpaddd %ymm13,%ymm8,%ymm8 + vpxor %ymm8,%ymm7,%ymm7 + vpslld $12,%ymm7,%ymm0 + vpsrld $20,%ymm7,%ymm7 + vpor %ymm0,%ymm7,%ymm7 + # x9 += x14, x4 = rotl32(x4 ^ x9, 12) + vpaddd %ymm14,%ymm9,%ymm9 + vpxor %ymm9,%ymm4,%ymm4 + vpslld $12,%ymm4,%ymm0 + vpsrld $20,%ymm4,%ymm4 + vpor %ymm0,%ymm4,%ymm4 + + # x0 += x5, x15 = rotl32(x15 ^ x0, 8) + vpaddd 0x00(%rsp),%ymm5,%ymm0 + vmovdqa %ymm0,0x00(%rsp) + vpxor %ymm0,%ymm15,%ymm15 + vpshufb %ymm2,%ymm15,%ymm15 + # x1 += x6, x12 = rotl32(x12 ^ x1, 8) + vpaddd 0x20(%rsp),%ymm6,%ymm0 + vmovdqa %ymm0,0x20(%rsp) + vpxor %ymm0,%ymm12,%ymm12 + vpshufb %ymm2,%ymm12,%ymm12 + # x2 += x7, x13 = rotl32(x13 ^ x2, 8) + vpaddd 0x40(%rsp),%ymm7,%ymm0 + vmovdqa %ymm0,0x40(%rsp) + vpxor %ymm0,%ymm13,%ymm13 + vpshufb %ymm2,%ymm13,%ymm13 + # x3 += x4, x14 = rotl32(x14 ^ x3, 8) + vpaddd 0x60(%rsp),%ymm4,%ymm0 + vmovdqa %ymm0,0x60(%rsp) + vpxor %ymm0,%ymm14,%ymm14 + vpshufb %ymm2,%ymm14,%ymm14 + + # x10 += x15, x5 = rotl32(x5 ^ x10, 7) + vpaddd %ymm15,%ymm10,%ymm10 + vpxor %ymm10,%ymm5,%ymm5 + vpslld $7,%ymm5,%ymm0 + vpsrld $25,%ymm5,%ymm5 + vpor %ymm0,%ymm5,%ymm5 + # x11 += x12, x6 = rotl32(x6 ^ x11, 7) + vpaddd %ymm12,%ymm11,%ymm11 + vpxor %ymm11,%ymm6,%ymm6 + vpslld $7,%ymm6,%ymm0 + vpsrld $25,%ymm6,%ymm6 + vpor %ymm0,%ymm6,%ymm6 + # x8 += x13, x7 = rotl32(x7 ^ x8, 7) + vpaddd %ymm13,%ymm8,%ymm8 + vpxor %ymm8,%ymm7,%ymm7 + vpslld $7,%ymm7,%ymm0 + vpsrld $25,%ymm7,%ymm7 + vpor %ymm0,%ymm7,%ymm7 + # x9 += x14, x4 = rotl32(x4 ^ x9, 7) + vpaddd %ymm14,%ymm9,%ymm9 + vpxor %ymm9,%ymm4,%ymm4 + vpslld $7,%ymm4,%ymm0 + vpsrld $25,%ymm4,%ymm4 + vpor %ymm0,%ymm4,%ymm4 + + dec %ecx + jnz .Ldoubleround8 + + # x0..15[0-3] += s[0..15] + vpbroadcastd 0x00(%rdi),%ymm0 + vpaddd 0x00(%rsp),%ymm0,%ymm0 + vmovdqa %ymm0,0x00(%rsp) + vpbroadcastd 0x04(%rdi),%ymm0 + vpaddd 0x20(%rsp),%ymm0,%ymm0 + vmovdqa %ymm0,0x20(%rsp) + vpbroadcastd 0x08(%rdi),%ymm0 + vpaddd 0x40(%rsp),%ymm0,%ymm0 + vmovdqa %ymm0,0x40(%rsp) + vpbroadcastd 0x0c(%rdi),%ymm0 + vpaddd 0x60(%rsp),%ymm0,%ymm0 + vmovdqa %ymm0,0x60(%rsp) + vpbroadcastd 0x10(%rdi),%ymm0 + vpaddd %ymm0,%ymm4,%ymm4 + vpbroadcastd 0x14(%rdi),%ymm0 + vpaddd %ymm0,%ymm5,%ymm5 + vpbroadcastd 0x18(%rdi),%ymm0 + vpaddd %ymm0,%ymm6,%ymm6 + vpbroadcastd 0x1c(%rdi),%ymm0 + vpaddd %ymm0,%ymm7,%ymm7 + vpbroadcastd 0x20(%rdi),%ymm0 + vpaddd %ymm0,%ymm8,%ymm8 + vpbroadcastd 0x24(%rdi),%ymm0 + vpaddd %ymm0,%ymm9,%ymm9 + vpbroadcastd 0x28(%rdi),%ymm0 + vpaddd %ymm0,%ymm10,%ymm10 + vpbroadcastd 0x2c(%rdi),%ymm0 + vpaddd %ymm0,%ymm11,%ymm11 + vpbroadcastd 0x30(%rdi),%ymm0 + vpaddd %ymm0,%ymm12,%ymm12 + vpbroadcastd 0x34(%rdi),%ymm0 + vpaddd %ymm0,%ymm13,%ymm13 + vpbroadcastd 0x38(%rdi),%ymm0 + vpaddd %ymm0,%ymm14,%ymm14 + vpbroadcastd 0x3c(%rdi),%ymm0 + vpaddd %ymm0,%ymm15,%ymm15 + + # x12 += counter values 0-3 + vpaddd %ymm1,%ymm12,%ymm12 + + # interleave 32-bit words in state n, n+1 + vmovdqa 0x00(%rsp),%ymm0 + vmovdqa 0x20(%rsp),%ymm1 + vpunpckldq %ymm1,%ymm0,%ymm2 + vpunpckhdq %ymm1,%ymm0,%ymm1 + vmovdqa %ymm2,0x00(%rsp) + vmovdqa %ymm1,0x20(%rsp) + vmovdqa 0x40(%rsp),%ymm0 + vmovdqa 0x60(%rsp),%ymm1 + vpunpckldq %ymm1,%ymm0,%ymm2 + vpunpckhdq %ymm1,%ymm0,%ymm1 + vmovdqa %ymm2,0x40(%rsp) + vmovdqa %ymm1,0x60(%rsp) + vmovdqa %ymm4,%ymm0 + vpunpckldq %ymm5,%ymm0,%ymm4 + vpunpckhdq %ymm5,%ymm0,%ymm5 + vmovdqa %ymm6,%ymm0 + vpunpckldq %ymm7,%ymm0,%ymm6 + vpunpckhdq %ymm7,%ymm0,%ymm7 + vmovdqa %ymm8,%ymm0 + vpunpckldq %ymm9,%ymm0,%ymm8 + vpunpckhdq %ymm9,%ymm0,%ymm9 + vmovdqa %ymm10,%ymm0 + vpunpckldq %ymm11,%ymm0,%ymm10 + vpunpckhdq %ymm11,%ymm0,%ymm11 + vmovdqa %ymm12,%ymm0 + vpunpckldq %ymm13,%ymm0,%ymm12 + vpunpckhdq %ymm13,%ymm0,%ymm13 + vmovdqa %ymm14,%ymm0 + vpunpckldq %ymm15,%ymm0,%ymm14 + vpunpckhdq %ymm15,%ymm0,%ymm15 + + # interleave 64-bit words in state n, n+2 + vmovdqa 0x00(%rsp),%ymm0 + vmovdqa 0x40(%rsp),%ymm2 + vpunpcklqdq %ymm2,%ymm0,%ymm1 + vpunpckhqdq %ymm2,%ymm0,%ymm2 + vmovdqa %ymm1,0x00(%rsp) + vmovdqa %ymm2,0x40(%rsp) + vmovdqa 0x20(%rsp),%ymm0 + vmovdqa 0x60(%rsp),%ymm2 + vpunpcklqdq %ymm2,%ymm0,%ymm1 + vpunpckhqdq %ymm2,%ymm0,%ymm2 + vmovdqa %ymm1,0x20(%rsp) + vmovdqa %ymm2,0x60(%rsp) + vmovdqa %ymm4,%ymm0 + vpunpcklqdq %ymm6,%ymm0,%ymm4 + vpunpckhqdq %ymm6,%ymm0,%ymm6 + vmovdqa %ymm5,%ymm0 + vpunpcklqdq %ymm7,%ymm0,%ymm5 + vpunpckhqdq %ymm7,%ymm0,%ymm7 + vmovdqa %ymm8,%ymm0 + vpunpcklqdq %ymm10,%ymm0,%ymm8 + vpunpckhqdq %ymm10,%ymm0,%ymm10 + vmovdqa %ymm9,%ymm0 + vpunpcklqdq %ymm11,%ymm0,%ymm9 + vpunpckhqdq %ymm11,%ymm0,%ymm11 + vmovdqa %ymm12,%ymm0 + vpunpcklqdq %ymm14,%ymm0,%ymm12 + vpunpckhqdq %ymm14,%ymm0,%ymm14 + vmovdqa %ymm13,%ymm0 + vpunpcklqdq %ymm15,%ymm0,%ymm13 + vpunpckhqdq %ymm15,%ymm0,%ymm15 + + # interleave 128-bit words in state n, n+4 + vmovdqa 0x00(%rsp),%ymm0 + vperm2i128 $0x20,%ymm4,%ymm0,%ymm1 + vperm2i128 $0x31,%ymm4,%ymm0,%ymm4 + vmovdqa %ymm1,0x00(%rsp) + vmovdqa 0x20(%rsp),%ymm0 + vperm2i128 $0x20,%ymm5,%ymm0,%ymm1 + vperm2i128 $0x31,%ymm5,%ymm0,%ymm5 + vmovdqa %ymm1,0x20(%rsp) + vmovdqa 0x40(%rsp),%ymm0 + vperm2i128 $0x20,%ymm6,%ymm0,%ymm1 + vperm2i128 $0x31,%ymm6,%ymm0,%ymm6 + vmovdqa %ymm1,0x40(%rsp) + vmovdqa 0x60(%rsp),%ymm0 + vperm2i128 $0x20,%ymm7,%ymm0,%ymm1 + vperm2i128 $0x31,%ymm7,%ymm0,%ymm7 + vmovdqa %ymm1,0x60(%rsp) + vperm2i128 $0x20,%ymm12,%ymm8,%ymm0 + vperm2i128 $0x31,%ymm12,%ymm8,%ymm12 + vmovdqa %ymm0,%ymm8 + vperm2i128 $0x20,%ymm13,%ymm9,%ymm0 + vperm2i128 $0x31,%ymm13,%ymm9,%ymm13 + vmovdqa %ymm0,%ymm9 + vperm2i128 $0x20,%ymm14,%ymm10,%ymm0 + vperm2i128 $0x31,%ymm14,%ymm10,%ymm14 + vmovdqa %ymm0,%ymm10 + vperm2i128 $0x20,%ymm15,%ymm11,%ymm0 + vperm2i128 $0x31,%ymm15,%ymm11,%ymm15 + vmovdqa %ymm0,%ymm11 + + # xor with corresponding input, write to output + vmovdqa 0x00(%rsp),%ymm0 + vpxor 0x0000(%rdx),%ymm0,%ymm0 + vmovdqu %ymm0,0x0000(%rsi) + vmovdqa 0x20(%rsp),%ymm0 + vpxor 0x0080(%rdx),%ymm0,%ymm0 + vmovdqu %ymm0,0x0080(%rsi) + vmovdqa 0x40(%rsp),%ymm0 + vpxor 0x0040(%rdx),%ymm0,%ymm0 + vmovdqu %ymm0,0x0040(%rsi) + vmovdqa 0x60(%rsp),%ymm0 + vpxor 0x00c0(%rdx),%ymm0,%ymm0 + vmovdqu %ymm0,0x00c0(%rsi) + vpxor 0x0100(%rdx),%ymm4,%ymm4 + vmovdqu %ymm4,0x0100(%rsi) + vpxor 0x0180(%rdx),%ymm5,%ymm5 + vmovdqu %ymm5,0x00180(%rsi) + vpxor 0x0140(%rdx),%ymm6,%ymm6 + vmovdqu %ymm6,0x0140(%rsi) + vpxor 0x01c0(%rdx),%ymm7,%ymm7 + vmovdqu %ymm7,0x01c0(%rsi) + vpxor 0x0020(%rdx),%ymm8,%ymm8 + vmovdqu %ymm8,0x0020(%rsi) + vpxor 0x00a0(%rdx),%ymm9,%ymm9 + vmovdqu %ymm9,0x00a0(%rsi) + vpxor 0x0060(%rdx),%ymm10,%ymm10 + vmovdqu %ymm10,0x0060(%rsi) + vpxor 0x00e0(%rdx),%ymm11,%ymm11 + vmovdqu %ymm11,0x00e0(%rsi) + vpxor 0x0120(%rdx),%ymm12,%ymm12 + vmovdqu %ymm12,0x0120(%rsi) + vpxor 0x01a0(%rdx),%ymm13,%ymm13 + vmovdqu %ymm13,0x01a0(%rsi) + vpxor 0x0160(%rdx),%ymm14,%ymm14 + vmovdqu %ymm14,0x0160(%rsi) + vpxor 0x01e0(%rdx),%ymm15,%ymm15 + vmovdqu %ymm15,0x01e0(%rsi) + + vzeroupper + mov %r8,%rsp + ret +ENDPROC(chacha20_8block_xor_avx2) diff --git a/arch/x86/crypto/chacha20_glue.c b/arch/x86/crypto/chacha20_glue.c index 4d677c3eb7bd..effe2160b7c5 100644 --- a/arch/x86/crypto/chacha20_glue.c +++ b/arch/x86/crypto/chacha20_glue.c @@ -21,12 +21,27 @@ asmlinkage void chacha20_block_xor_ssse3(u32 *state, u8 *dst, const u8 *src); asmlinkage void chacha20_4block_xor_ssse3(u32 *state, u8 *dst, const u8 *src); +#ifdef CONFIG_AS_AVX2 +asmlinkage void chacha20_8block_xor_avx2(u32 *state, u8 *dst, const u8 *src); +static bool chacha20_use_avx2; +#endif static void chacha20_dosimd(u32 *state, u8 *dst, const u8 *src, unsigned int bytes) { u8 buf[CHACHA20_BLOCK_SIZE]; +#ifdef CONFIG_AS_AVX2 + if (chacha20_use_avx2) { + while (bytes >= CHACHA20_BLOCK_SIZE * 8) { + chacha20_8block_xor_avx2(state, dst, src); + bytes -= CHACHA20_BLOCK_SIZE * 8; + src += CHACHA20_BLOCK_SIZE * 8; + dst += CHACHA20_BLOCK_SIZE * 8; + state[12] += 8; + } + } +#endif while (bytes >= CHACHA20_BLOCK_SIZE * 4) { chacha20_4block_xor_ssse3(state, dst, src); bytes -= CHACHA20_BLOCK_SIZE * 4; @@ -113,6 +128,10 @@ static int __init chacha20_simd_mod_init(void) if (!cpu_has_ssse3) return -ENODEV; +#ifdef CONFIG_AS_AVX2 + chacha20_use_avx2 = cpu_has_avx && cpu_has_avx2 && + cpu_has_xfeatures(XSTATE_SSE | XSTATE_YMM, NULL); +#endif return crypto_register_alg(&alg); } diff --git a/crypto/Kconfig b/crypto/Kconfig index 8f24185ee0a7..82caab0e8256 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -1214,7 +1214,7 @@ config CRYPTO_CHACHA20 <http://cr.yp.to/chacha/chacha-20080128.pdf> config CRYPTO_CHACHA20_X86_64 - tristate "ChaCha20 cipher algorithm (x86_64/SSSE3)" + tristate "ChaCha20 cipher algorithm (x86_64/SSSE3/AVX2)" depends on X86 && 64BIT select CRYPTO_BLKCIPHER select CRYPTO_CHACHA20 |