[PATCHv4 0/8] 64-bit data integrity field support

[Keith Busch <kbusch@kernel.org>]

The NVM Express protocol added enhancements to the data integrity field
formats beyond the T10 defined protection information. A detailed
description of the new formats can be found in the NVMe's NVM Command
Set Specification, section 5.2, available at:

  https://nvmexpress.org/wp-content/uploads/NVM-Command-Set-Specification-1.0b-2021.12.18-Ratified.pdf

This series implements one possible new format: the CRC64 guard with
48-bit reference tags. This does not add support for the variable
"storage tag" field, or any potential hardware acceleration.

Changes since v3:

  - Replaced lower_48_bits() macro with inline function, and replaced
    0xffffffffffffull with the equivalent (1ull << 48) - 1

  - Replaced crc64 test module with new entry in crypto/testmgr.c

  - Renamed nvme_ function prefixes with ext_pi_

  - Placed bit inversion within crc64 calculation rather than rely on the
    caller to pass in an inverted initial value. This is necessary to
    update the crc value when its buffer is discontiguous, or updated in
    chunks.

  - Removed 'inline' from nvme driver's ref tag setup.

  - Added Review's for unchanged patches, removed reviews for the ones
    that changed.

  - lib/Kconfig dependency fix

  - Dropped the x86_64 PCLMULQDQ accelerated calculation. This task will
    be completed by people more experienced in this area, so expect a
    follow up soon.

Keith Busch (8):
  block: support pi with extended metadata
  nvme: allow integrity on extended metadata formats
  asm-generic: introduce be48 unaligned accessors
  linux/kernel: introduce lower_48_bits function
  lib: add rocksoft model crc64
  crypto: add rocksoft 64b crc guard tag framework
  block: add pi for nvme enhanced integrity
  nvme: add support for enhanced metadata

 block/Kconfig                   |   1 +
 block/bio-integrity.c           |   1 +
 block/t10-pi.c                  | 198 +++++++++++++++++++++++++++++++-
 crypto/Kconfig                  |   5 +
 crypto/Makefile                 |   1 +
 crypto/crc64_rocksoft_generic.c |  89 ++++++++++++++
 crypto/testmgr.c                |   7 ++
 crypto/testmgr.h                |  15 +++
 drivers/nvme/host/core.c        | 165 +++++++++++++++++++++-----
 drivers/nvme/host/nvme.h        |   4 +-
 include/asm-generic/unaligned.h |  26 +++++
 include/linux/blk-integrity.h   |   1 +
 include/linux/crc64.h           |   7 ++
 include/linux/kernel.h          |   9 ++
 include/linux/nvme.h            |  53 ++++++++-
 include/linux/t10-pi.h          |  20 ++++
 lib/Kconfig                     |   9 ++
 lib/Makefile                    |   1 +
 lib/crc64-rocksoft.c            | 129 +++++++++++++++++++++
 lib/crc64.c                     |  28 +++++
 lib/gen_crc64table.c            |  51 ++++++--
 21 files changed, 773 insertions(+), 47 deletions(-)
 create mode 100644 crypto/crc64_rocksoft_generic.c
 create mode 100644 lib/crc64-rocksoft.c

-- 
2.25.4