[PATCH v1 0/1] dm-integrity: Implement asynch digest support

[Harald Freudenberger <freude@linux.ibm.com>]

Use the async digest in-kernel crypto API instead of the
synchronous digest API. This has the advantage of being able
to use synchronous as well as asynchronous digest implementations
as the in-kernel API has an automatic wrapping mechanism
to provide all synchronous digests via the asynch API.

Please note this code is elementary tested but needs some more
test coverage before integration. I can't do that as I only have
a s390 platform but I assume someone from dmcrypt/dmintegrity will
run a more sophisticated test suite on this.

Changelog:

v1: First implementation. Tested with crc32, sha256, hmac-sha256 and
    the s390 specific implementations for hmac-sha256 and protected
    key phmac-sha256. Also ran with some instrumented code (in the digest
    implementation) to verify that in fact now the code runs asynchronous.

Harald Freudenberger (1):
  dm-integrity: Implement asynch digest support

 drivers/md/dm-integrity.c | 220 ++++++++++++++++++++++++--------------
 1 file changed, 138 insertions(+), 82 deletions(-)


base-commit: fac04efc5c793dccbd07e2d59af9f90b7fc0dca4
--
2.43.0