blake2s: add AVX implementation

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/Kbuild b/src/Kbuild
index 6425f6a..35dade7 100644
--- a/src/Kbuild
+++ b/src/Kbuild
@@ -6,6 +6,10 @@ wireguard-y := main.o noise.o device.o peer.o timers.o data.o send.o receive.o s
 wireguard-y += crypto/curve25519.o crypto/chacha20poly1305.o crypto/blake2s.o
 ifeq ($(CONFIG_X86_64),y)
 	wireguard-y += crypto/chacha20-ssse3-x86_64.o crypto/poly1305-sse2-x86_64.o
+avx_supported := $(call as-instr,vpxor %xmm0$(comma)%xmm0$(comma)%xmm0,yes,no)
+ifeq ($(avx_supported),yes)
+	wireguard-y += crypto/blake2s-avx-x86_64.o
+endif
 avx2_supported := $(call as-instr,vpgatherdd %ymm0$(comma)(%eax$(comma)%ymm1$(comma)4)$(comma)%ymm2,yes,no)
 ifeq ($(avx2_supported),yes)
 	wireguard-y += crypto/chacha20-avx2-x86_64.o crypto/poly1305-avx2-x86_64.o