On Thu, Aug 03, 2017 at 01:12:32AM +0000, Yu, Wenqian wrote:
> Hi, Herbert and all,
> 
> For saving the offload cost of symmetric cipher to hardware accelerator, we 
> have a proposal (chained-IV) to batch multiple SG with different IV into one 
> skcipher request, which also benefits SW implementation. The existing 
> skcipher with SG list in crypto framework is treating all SG in the SG list 
> as one single buffer to symmetric crypto operation with same IV.  In some use 
> case the IV for each SG is different (e.g. dm-crypt, the IV for each sector 
> is different). Could you please give quick comments on the below proposal 
> before implementation?

We've had this discussion already.  The current plan is to use
explicit IV generators, as seen here

https://patchwork.kernel.org/patch/9803473/

So please help review the existing patches and if there are any
inadequacies, please comment.

Thanks.
-- 
Email: Herbert Xu <herb...@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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