Re: [PATCH v4 5/5] crypto: AES CBC multi-buffer glue code

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On Fri, 2015-12-11 at 11:23 +0800, Herbert Xu wrote:
> On Thu, Dec 10, 2015 at 08:39:45AM -0800, Tim Chen wrote:
> >
> > The inner cipher is called synchronously from the outer layer 
> > async cipher algorithm in cbc_mb_async_ablk_decrypt via
> > 
> >         err = crypto_blkcipher_crt(child_tfm)->decrypt(
> >                 &rctx->desc, req->dst, req->src, req->nbytes);
> 
> We should avoid bypassing the API and directly calling crypto
> driver functions like this.
> 
> What if you made it a proper ablkcipher and just called it through
> the API?
> 
> Thanks,

Direct call I assume have less overhead.  Let me think about
making the inner cipher ablkcipher.  I may need to rewrite a lot
of the glue layer :(

Tim

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