From: Akhil Goyal

quoted

From: Suanming Mou <redacted>

A keytag is a piece of data encrypted together with a DEK.

When a DEK is referenced by an MKEY.bsf through its index, the keytag
is also supplied in the BSF as plaintext. The HW will decrypt the DEK
(and the attached keytag) and will fail the operation if the keytags
don't match.

This commit adds the configuration of the keytag with devargs.

Signed-off-by: Suanming Mou <redacted>
Signed-off-by: Matan Azrad <redacted>
---

Documentation for devargs should be part of this patch.
Please split the last patch accordingly.

Title can be shortened to
Crypto/mlx5: add keytag devarg

Fix other patches of devargs accordingly.

As I said before, no devargs is really active before adding datapath patches.
The option to add all the supported features \ documentations in the patch which actually adds the support is correct.

The last patch adds the capabilities and docs when all of them are really supported.

Ok for title.