Tagged Queuing

For a definition of tagged queuing, refer to the SCSI-2 specification. To support tagged queuing, first check the scsi_options flag SCSI_OPTIONS_TAG to see if tagged queuing is enabled globally. Next, check to see if the target is a SCSI-2 device and whether it has tagged queuing enabled. If this is all true, attempt to enable tagged queuing by using scsi_ifsetcap(9F).