[SCSI] Host protection capabilities
Controllers that support protection information must indicate this to
the SCSI midlayer so that the ULD can prepare scsi_cmnds accordingly.
This patch implements a host mask and various types of protection:
- DIF Type 1-3 (between HBA and disk)
- DIX Type 0-3 (between OS and HBA)
The patch also allows the HBA to set the guard type to something
different than the T10-mandated CRC.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index b6e5610..ab3c718 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -249,6 +249,8 @@
shost_rd_attr(can_queue, "%hd\n");
shost_rd_attr(sg_tablesize, "%hu\n");
shost_rd_attr(unchecked_isa_dma, "%d\n");
+shost_rd_attr(prot_capabilities, "%u\n");
+shost_rd_attr(prot_guard_type, "%hd\n");
shost_rd_attr2(proc_name, hostt->proc_name, "%s\n");
static struct attribute *scsi_sysfs_shost_attrs[] = {
@@ -263,6 +265,8 @@
&dev_attr_hstate.attr,
&dev_attr_supported_mode.attr,
&dev_attr_active_mode.attr,
+ &dev_attr_prot_capabilities.attr,
+ &dev_attr_prot_guard_type.attr,
NULL
};