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| author |   Dave Watson <davejwatson@fb.com> | 2018-12-10 19:57:49 +0000 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2018-12-23 11:52:42 +0800 |
| commit | e377bedb09d6970ad27d7714b0a6365ee7e4d732 (patch) | |
| tree | 822f6318ecac12cbfbd9f81a9631f69b6d2267f3 /arch/x86 | |
| parent | crypto: aesni - support 256 byte keys in avx asm (diff) | |
| download | linux-dev-e377bedb09d6970ad27d7714b0a6365ee7e4d732.tar.xz linux-dev-e377bedb09d6970ad27d7714b0a6365ee7e4d732.zip | |
crypto: aesni - Add GCM_COMPLETE macro
Merge encode and decode tag calculations in GCM_COMPLETE macro.
Scatter/gather routines will call this once at the end of encryption
or decryption.
Signed-off-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/crypto/aesni-intel_avx-x86_64.S | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/crypto/aesni-intel_avx-x86_64.S b/arch/x86/crypto/aesni-intel_avx-x86_64.S index 2aa11c503bb9..8e9ae4b26118 100644 --- a/arch/x86/crypto/aesni-intel_avx-x86_64.S +++ b/arch/x86/crypto/aesni-intel_avx-x86_64.S @@ -510,6 +510,14 @@ _less_than_8_bytes_left\@: ############################# _multiple_of_16_bytes\@: + GCM_COMPLETE \GHASH_MUL \REP +.endm + + +# GCM_COMPLETE Finishes update of tag of last partial block +# Output: Authorization Tag (AUTH_TAG) +# Clobbers rax, r10-r12, and xmm0, xmm1, xmm5-xmm15 +.macro GCM_COMPLETE GHASH_MUL REP mov arg8, %r12 # r12 = aadLen (number of bytes) shl $3, %r12 # convert into number of bits vmovd %r12d, %xmm15 # len(A) in xmm15 |