[v2,0/2] dm-integrity: Implement asynch digest support

Message

Harald Freudenberger Jan. 29, 2025, 4:25 p.m. UTC

Support for ahashes in dm-integrity.

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.
v2: Support shash and ahash. Based on Mikulas' idea about implementing
    ahash support similar to dm-verity this version now adds support
    for ahash but does not replace the shash support. For more details
    see the text of the patch header.

Harald Freudenberger (2):
  dm-integrity: use internal variable for digestsize
  dm-integrity: introduce ahash support for the internal hash

 drivers/md/dm-integrity.c | 237 +++++++++++++++++++++++++++++---------
 1 file changed, 180 insertions(+), 57 deletions(-)


base-commit: fac04efc5c793dccbd07e2d59af9f90b7fc0dca4