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[SCSI] lib: Add support for the T10 (SCSI) Data Integrity Field CRC

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The SCSI Block Protocol uses this 16-bit CRC to verify the integrity
of each data sector.  crc_t10dif() is used by sd_dif.c when performing
I/O to or from disks formatted with protection information.

Signed-off-by: Martin K. Petersen <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
This commit is contained in:
Martin K. Petersen 2008-06-25 11:22:42 -04:00 • committed by James Bottomley
commit f11f594edb
4 changed files with 83 additions and 0 deletions
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7
lib/Kconfig
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@ -29,6 +29,13 @@ config CRC16
the kernel tree does. Such modules that use library CRC16
functions require M here.
config CRC_T10DIF
tristate "CRC calculation for the T10 Data Integrity Field"
help
This option is only needed if a module that's not in the
kernel tree needs to calculate CRC checks for use with the
SCSI data integrity subsystem.
config CRC_ITU_T
tristate "CRC ITU-T V.41 functions"
help