tree 080a87c9c17b9a754cfc69d12a77328f8ae698ae
parent 2d290f0240c682a5dddf6b9ba39460c82f9fdff1
author Marcelo Cerri <mhcerri@linux.vnet.ibm.com> 1377786994 -0300
committer Herbert Xu <herbert@gondor.apana.org.au> 1378117973 +1000

crypto: nx - fix limits to sg lists for AES-CTR

This patch updates the nx-aes-ctr implementation to perform several
hyper calls if needed in order to always respect the length limits for
scatter/gather lists.

Two different limits are considered:

 - "ibm,max-sg-len": maximum number of bytes of each scatter/gather
   list.

 - "ibm,max-sync-cop":
    - The total number of bytes that a scatter/gather list can hold.
    - The maximum number of elements that a scatter/gather list can have.

Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>