Re: Fwd: crypto accelerator driver problems

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On Wed, Jan 26, 2011 at 10:39 AM, Herbert Xu
<herbert@xxxxxxxxxxxxxxxxxxx> wrote:
> On Wed, Jan 26, 2011 at 10:26:33AM +0330, Hamid Nassiby wrote:
>>
>> As you know, I posted my problem again to crypto list and no one answered.
>> Now I
>> emphasize one aspect of the problem as a concept related to IPSec protocol,
>> free
>> of my problem's nature, and I hope to get some guidelines at this time. The
>> question is as following:
>> If IPSec delivers IP packets to hardware crypto accelerator in sequential
>> manner
>> (e.g, packets in order: 1, 2, 3, ..., 36, 37, 38,...) and crypto accelerator
>> possibly returns back packets out of entering order to IPSec (e.g, packet
>> 37 is returned back before the packet 36 to IPSec, so the order of packets
>> is
>> not the same before entering crypto accelerator and after exiting it); Is it
>> possible to rise any problem here?
>
> We do not allow such reordering. ÂAll crypto drivers must ensure
> ordering within a single tfm. ÂBetween different tfms there is no
> ordering requirement.
>
> Cheers,
> --
> Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
> Home Page: http://gondor.apana.org.au/~herbert/
> PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
>


Do you mean that different IP packets fit into one single Block Cipher tfm?
Would you please explain expansively?

Thanks a lot,
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