linux-kernel - Re: [PATCH v4 2/5] crypto: AF

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Message-ID: <20141206232734.GA6409@gondor.apana.org.au>
Date:	Sun, 7 Dec 2014 07:27:34 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Stephan Mueller <smueller@...onox.de>
Cc:	Daniel Borkmann <dborkman@...hat.com>,
	'Quentin Gouchet' <quentin.gouchet@...il.com>,
	'LKML' <linux-kernel@...r.kernel.org>,
	linux-crypto@...r.kernel.org, linux-api@...r.kernel.org
Subject: Re: [PATCH v4 2/5] crypto: AF_ALG: add AEAD support

On Sat, Dec 06, 2014 at 09:08:54PM +0100, Stephan Mueller wrote:
>
> While implementing that request, I thought about setting the auth size as part 
> of the msg control in sendmsg instead of setsockopt. This would save us a 
> system call and thus CPU cycles.

No, this is a tfm property and therefore you can't set them on the
child sockets sicne two child sockets would share the same tfm.

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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