linux-kernel - Re: [PATCH v2 01/10] crypto: AF_ALG: add user space interface for AEAD

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Message-ID: <20141119042704.GA19258@gondor.apana.org.au>
Date:	Wed, 19 Nov 2014 12:27:04 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Stephan Mueller <smueller@...onox.de>
Cc:	Daniel Borkmann <dborkman@...hat.com>, quentin.gouchet@...il.com,
	LKML <linux-kernel@...r.kernel.org>,
	linux-crypto@...r.kernel.org, ABI/API <linux-api@...r.kernel.org>
Subject: Re: [PATCH v2 01/10] crypto: AF_ALG: add user space interface for
 AEAD

On Wed, Nov 19, 2014 at 05:20:42AM +0100, Stephan Mueller wrote:
> 
> When looking deeper into skcipher_sendmsg, I see that the input data is copied 
> into the kernel using memcpy_fromiovec. The memory is allocated before the 
> memcpy call by skcipher_alloc_sgl.

Zero-copy is done through sendpage.

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