Re: [PATCH] crypto: arm/aes-neonbs - process 8 blocks in parallel if we can

[Herbert Xu <herbert@gondor.apana.org.au>]

On Wed, Dec 28, 2016 at 07:50:44PM +0000, Ard Biesheuvel wrote:
> 
> So about this chunksize, is it ever expected to assume other values
> than 1 (for stream ciphers) or the block size (for block ciphers)?
> Having block size, IV size *and* chunk size fields may be confusing to
> some already, so if the purpose of chunk size can be fulfilled by a
> single 'stream cipher' flag, perhaps we should change that first.

For users (such as algif) it's much more convenient to have a size
rather than a flag because that's what they need to determine the
minimum size for partial updates.

For implementors you don't need to specify the chunksize at all
unless you're a stream cipher (or some other case in future where
the minimum partial update size is not equal to your block size).

Cheers,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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