The hardware-wrapped key support in this branch is based on my patch
"[RFC PATCH v3 1/3] block: add basic hardware-wrapped key support"
(https://lore.kernel.org/all/20211021181608.54127-2-ebiggers@kernel.org).
I've since made several updates to that patch and it is now at v7.
This commit brings in the updates from v3 to v7. The main change is
making blk_crypto_derive_sw_secret() operate on a struct block_device,
and adding blk_crypto_hw_wrapped_keys_compatible(). This aligns with
changes upstream in v6.1 and v6.2 that removed block-layer internal
structures from the API that blk-crypto exposes to upper layers.
There's also a slight change in prototype for ->derive_sw_secret, so a
couple out-of-tree drivers will need to be updated, but people
maintaining out-of-tree drivers know what they are dealing with anyway.
Bug: 160883801
Link: https://lore.kernel.org/r/20221216203636.81491-2-ebiggers@kernel.org
Change-Id: I0f285c11c2764064cd4a9d6eac0089099a9601ed
Signed-off-by: Eric Biggers <ebiggers@google.com>
139dbaa221