Re: [PATCH v11 1/2] crypto: AF_ALG: add AEAD support

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Am Montag, 26. Januar 2015, 11:06:31 schrieb Herbert Xu:

Hi Herbert,

> On Wed, Jan 21, 2015 at 02:19:17AM +0100, Stephan Mueller wrote:
> > +	/*
> > +	 * Require exactly one IOV block as the AEAD operation is a one shot
> > +	 * due to the authentication tag.
> > +	 */
> > +	if (msg->msg_iter.nr_segs != 1)
> > +		return -ENOMSG;
> 
> Why does limit exist? The fact that you have to do it in one go does
> not limit the number of receive IOVs, at least not to one.

It seems I have misunderstood you in the last discussion.

in the last discussion [1] I tried to explain why I did not consider multiple 
IOVs. In the reply to my answer [2] I seem to have understood that the current 
implementation is fine.

So, shall I now implement the multiple IOVs approach outlined in [1]? If yes, 
how many IOVs shall I consider?
> 
> Cheers,

[1] http://www.spinics.net/lists/linux-crypto/msg12861.html

[2] http://www.spinics.net/lists/linux-crypto/msg12935.html
-- 
Ciao
Stephan
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