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The Marvell 88f5182 have a cryptographic hardware (named “CESA”) thing that is allowing to reduce CPU usage while dealing with crypto stuff. If you check in the kernel, you'll see that this crypto hardware access is done using OCF.

A guy from Marvell did post a dm-crypt.c patch to allow using OCF for encrypted partitions, I didn't checked DNS323's kernel source, but I don't think that this patch have been applied on it …

You can find that patch here and the message describing it here. Note that the crypto hardware is supporting DES-CBC, 3DES-CBC and AES-CBC encryption !

Sylver

this patch seems to be applied to the 2.6.12.6-Kernel sources that comes with Firmware 1.05, but it seems to be disabled icks