Re: [PATCH v2 0/4] Introduce bulk mode for crypto engine framework

From: Herbert Xu
Date: Mon Apr 18 2016 - 03:25:20 EST

On Mon, Apr 18, 2016 at 03:21:16PM +0800, Baolin Wang wrote:
> I don't think so, the dm-crypt can not send maximal requests at some
> situations. For example, the 'cbc(aes)' cipher, it must be handled
> sector by sector (IV is dependency for each sector), so the dm-crypt
> can not send maximal requests, but must sector by sector in this
> situation.

If you can't merge them as requests, then how is the hardware going
to benefit from batching them? Or are you talking about parallel
processing similar to sha-mb?

Even with batching we should be involving the user because only the
user knows (if anyone does) whether more data will be forthcoming.

Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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