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

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Date:	Tue, 15 Dec 2015 10:36:39 -0800
From:	Tim Chen <tim.c.chen@...ux.intel.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	"David S.Miller" <davem@...emloft.net>,
	Stephan Mueller <smueller@...onox.de>,
	Chandramouli Narayanan <mouli_7982@...oo.com>,
	Vinodh Gopal <vinodh.gopal@...el.com>,
	James Guilford <james.guilford@...el.com>,
	Wajdi Feghali <wajdi.k.feghali@...el.com>,
	Jussi Kivilinna <jussi.kivilinna@....fi>,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 5/5] crypto: AES CBC multi-buffer glue code

On Sat, 2015-12-12 at 13:48 +0800, Herbert Xu wrote:
> On Fri, Dec 11, 2015 at 08:54:40AM -0800, Tim Chen wrote:
> > Direct call I assume have less overhead.  Let me think about
> 
> static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
> {
> 	struct ablkcipher_tfm *crt =
> 		crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
> 	return crt->encrypt(req);
> }
> 
> I don't see any overhead there that you could eliminate by calling
> crt->encrypt directly.
> 
> Cheers,

Okay, I'll attempt to convert the inner cipher to ablk.  It may
take me a bit of time.

Thanks.

Tim

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