From: Martin K. Petersen <martin.petersen@oracle.com>
Date: Sun, 4 Jan 2009 08:08:19 +0000 (-0500)
Subject: [SCSI] scsi_debug: DIF/DIX support
X-Git-Tag: v2.6.30-rc1~641^2~115
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6a44287417de1625a59f1d4ae52d033c03b9dab;p=pandora-kernel.git

[SCSI] scsi_debug: DIF/DIX support

This patch adds support for DIX and DIF in scsi_debug.  A separate
buffer is allocated for the protection information.

 - The dix parameter indicates whether the controller supports DIX
   (protection information DMA)

 - The dif parameter indicates whether the simulated storage device
   supports DIF

 - The guard parameter switches between T10 CRC(0) and IP checksum(1)

 - The ato parameter indicates whether the application tag is owned by
   the disk(0) or the OS(1)

 - DIF and DIX errors can be triggered using the scsi_debug_opts mask

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---

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