tree 4f6daa1d509708fb340d09608d79557a9af57f00
parent db007fc5e20c00b356e9ffe2d0e007398c65c837
author Martin K. Petersen <martin.petersen@oracle.com> 1216328928 -0400
committer James Bottomley <James.Bottomley@HansenPartnership.com> 1217099695 -0400

[SCSI] Support devices with protection information

Implement support for DMA of protection information for devices that
are data integrity capable.

 - Add support for mapping an extra scatter-gather list containing
   the protection information.

 - Allocate protection scsi_data_buffer if host is DIX (integrity DMA)
   capable.

 - Accessor function for checking whether a device has protection
   enabled.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>