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Message-Id: <20220201190128.3075065-1-kbusch@kernel.org>
Date: Tue, 1 Feb 2022 11:01:21 -0800
From: Keith Busch <kbusch@...nel.org>
To: linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-block@...r.kernel.org
Cc: axboe@...nel.dk, hch@....de, martin.petersen@...cle.com,
colyli@...e.de, Keith Busch <kbusch@...nel.org>
Subject: [PATCHv2 0/7] 64-bit data integrity field support
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 RFC v1:
- Generated the reflected CRC table and cacluated CRC accordingly
instead of reflecting the input/output (Eric Biggers, patch 3)
- Fixed Kconfig.debug dependency for CRC tests (patch 4)
- Fixed endian conversion sparse error (patch 7).
- Added support for PRACT (Klaus Jensen, patch 7)
Keith Busch (7):
block: support pi with extended metadata
nvme: allow integrity on extended metadata formats
lib: add rocksoft model crc64
lib: add crc64 tests
asm-generic: introduce be48 unaligned accessors
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 +++++++++++++++++++++++++++++++-
drivers/nvme/host/core.c | 167 ++++++++++++++++++++++-----
drivers/nvme/host/nvme.h | 4 +-
include/asm-generic/unaligned.h | 26 +++++
include/linux/blk-integrity.h | 1 +
include/linux/crc64.h | 2 +
include/linux/nvme.h | 53 ++++++++-
include/linux/t10-pi.h | 20 ++++
lib/Kconfig.debug | 4 +
lib/Makefile | 1 +
lib/crc64.c | 26 +++++
lib/gen_crc64table.c | 51 ++++++--
lib/test_crc64.c | 68 +++++++++++
15 files changed, 576 insertions(+), 47 deletions(-)
create mode 100644 lib/test_crc64.c
--
2.25.4
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