From: Hannes Reinecke <hare@suse.de>
To: Keith Busch <kbusch@kernel.org>,
linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-block@vger.kernel.org
Cc: axboe@kernel.dk, hch@lst.de, martin.petersen@oracle.com,
colyli@suse.de, Eric Biggers <ebiggers@kernel.org>
Subject: Re: [PATCHv2 3/7] lib: add rocksoft model crc64
Date: Wed, 2 Feb 2022 14:13:33 +0100 [thread overview]
Message-ID: <6acd13c3-5e98-b050-bcc4-9d075e013817@suse.de> (raw)
In-Reply-To: <20220201190128.3075065-4-kbusch@kernel.org>
On 2/1/22 20:01, Keith Busch wrote:
> The NVM Express specification extended data integrity fields to 64 bits
> using the Rocksoft^TM parameters. Add the poly to the crc64 table
> generation, and provide a library routine implementing the algorithm.
>
> The Rocksoft 64-bit CRC model parameters are as follows:
> Poly: 0xAD93D23594C93659
> Initial value: 0xFFFFFFFFFFFFFFFF
> Reflected Input: True
> Reflected Output: True
> Xor Final: 0xFFFFFFFFFFFFFFFF
>
> Since this model used reflected bits, the implementation generates the
> reflected table so the result is ordered consistently.
>
> Cc: Eric Biggers <ebiggers@kernel.org>
> Signed-off-by: Keith Busch <kbusch@kernel.org>
> ---
> v1->v2:
>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@suse.de +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Felix Imendörffer
next prev parent reply other threads:[~2022-02-02 13:13 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-01 19:01 [PATCHv2 0/7] 64-bit data integrity field support Keith Busch
2022-02-01 19:01 ` [PATCHv2 1/7] block: support pi with extended metadata Keith Busch
2022-02-02 4:38 ` Martin K. Petersen
2022-02-02 13:11 ` Hannes Reinecke
2022-02-01 19:01 ` [PATCHv2 2/7] nvme: allow integrity on extended metadata formats Keith Busch
2022-02-02 4:39 ` Martin K. Petersen
2022-02-02 13:12 ` Hannes Reinecke
2022-02-01 19:01 ` [PATCHv2 3/7] lib: add rocksoft model crc64 Keith Busch
2022-02-02 4:40 ` Martin K. Petersen
2022-02-02 13:13 ` Hannes Reinecke [this message]
2022-02-01 19:01 ` [PATCHv2 4/7] lib: add crc64 tests Keith Busch
2022-02-02 4:42 ` Martin K. Petersen
2022-02-02 13:14 ` Hannes Reinecke
2022-02-01 19:01 ` [PATCHv2 5/7] asm-generic: introduce be48 unaligned accessors Keith Busch
2022-02-02 4:41 ` Martin K. Petersen
2022-02-02 13:15 ` Hannes Reinecke
2022-02-01 19:01 ` [PATCHv2 6/7] block: add pi for nvme enhanced integrity Keith Busch
2022-02-02 4:35 ` Martin K. Petersen
2022-02-02 13:19 ` Hannes Reinecke
2022-02-02 18:40 ` Bart Van Assche
2022-02-01 19:01 ` [PATCHv2 7/7] nvme: add support for enhanced metadata Keith Busch
2022-02-02 4:48 ` Martin K. Petersen
2022-02-02 13:28 ` Hannes Reinecke
2022-02-02 15:41 ` Keith Busch
2022-02-02 15:47 ` Martin K. Petersen
2022-02-02 16:38 ` Hannes Reinecke
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