Re: [PATCHv2 3/7] lib: add rocksoft model crc64

[Hannes Reinecke]

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@xxxxxxxxxx>
> Signed-off-by: Keith Busch <kbusch@xxxxxxxxxx>
> ---
> v1->v2:
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes
--
Dr. Hannes Reinecke		           Kernel Storage Architect
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