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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2018-09-17 06:03:38 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-09-17 06:03:38 +0200 |
| commit | 511ff33bf574476eb61b0c9d218a628b0dcb2d8d (patch) | |
| tree | 86648057f201a23f8c5f8f45e9f7c7c56eb56e7b | |
| parent | crypto: pass simd by reference (diff) | |
| download | wireguard-monolithic-historical-511ff33bf574476eb61b0c9d218a628b0dcb2d8d.tar.xz wireguard-monolithic-historical-511ff33bf574476eb61b0c9d218a628b0dcb2d8d.zip | |
chacha20-x86_64: don't activate simd for small blocks
| -rw-r--r-- | src/crypto/zinc/chacha20/chacha20-x86_64-glue.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/crypto/zinc/chacha20/chacha20-x86_64-glue.h b/src/crypto/zinc/chacha20/chacha20-x86_64-glue.h index 34919c7..aef9697 100644 --- a/src/crypto/zinc/chacha20/chacha20-x86_64-glue.h +++ b/src/crypto/zinc/chacha20/chacha20-x86_64-glue.h @@ -61,7 +61,8 @@ static inline bool chacha20_arch(u8 *dst, const u8 *src, const size_t len, const u32 key[8], const u32 counter[4], simd_context_t *simd_context) { - if (!simd_use(simd_context)) + if ((len < CHACHA20_BLOCK_SIZE && !(*simd_context && HAVE_SIMD_IN_USE)) || + !simd_use(simd_context)) return false; #ifdef CONFIG_AS_AVX512 |