• Ard Biesheuvel's avatar
    crypto: skcipher - introduce walksize attribute for SIMD algos · c821f6ab
    Ard Biesheuvel authored
    In some cases, SIMD algorithms can only perform optimally when
    allowed to operate on multiple input blocks in parallel. This is
    especially true for bit slicing algorithms, which typically take
    the same amount of time processing a single block or 8 blocks in
    parallel. However, other SIMD algorithms may benefit as well from
    bigger strides.
    
    So add a walksize attribute to the skcipher algorithm definition, and
    wire it up to the skcipher walk API. To avoid confusion between the
    skcipher and AEAD attributes, rename the skcipher_walk chunksize
    attribute to 'stride', and set it from the walksize (in the skcipher
    case) or from the chunksize (in the AEAD case).
    Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    c821f6ab
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