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target: perform t10_wwn ID initialisation in target_alloc_device()

PATCH Applied David Disseldorp 1 participant 1 message Dec 5, 2018 SCSI target

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PATCH v7 5/5 target: perform t10_wwn ID initialisation in target_alloc_device()

Initialise the t10_wwn vendor, model and revision defaults when a device is allocated instead of when it's enabled. This ensures that custom vendor or model strings set prior to enablement are not later overwritten with default values.

The TRANSPORT_FLAG_PASSTHROUGH conditional can be dropped for the following reasons:
- target_core_pscsi overwrites the defaults in the pscsi_configure_device() callback.
+ the contents is then only used for ConfigFS via $pscsi_dev/statistics/scsi_lu/vend, etc.
- target_core_user doesn't touch the defaults, nor are they used for anything outside of ConfigFS.

---
 drivers/target/target_core_device.c | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)
drivers/target/target_core_device.c +7 -14
index ebd787bb29a8..5ead7eae30b5 100644
@@ -810,6 +810,13 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
 	mutex_init(&xcopy_lun->lun_tg_pt_md_mutex);
 	xcopy_lun->lun_tpg = &xcopy_pt_tpg;
 
+	/* Preload the default INQUIRY const values */
+	strlcpy(dev->t10_wwn.vendor, "LIO-ORG", sizeof(dev->t10_wwn.vendor));
+	strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod,
+		sizeof(dev->t10_wwn.model));
+	strlcpy(dev->t10_wwn.revision, dev->transport->inquiry_rev,
+		sizeof(dev->t10_wwn.revision));
+
 	return dev;
 }
 
@@ -984,20 +991,6 @@ int target_configure_device(struct se_device *dev)
 	 */
 	INIT_WORK(&dev->qf_work_queue, target_qf_do_work);
 
-	/*
-	 * Preload the initial INQUIRY const values if we are doing
-	 * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI
-	 * passthrough because this is being provided by the backend LLD.
-	 */
-	if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) {
-		strlcpy(dev->t10_wwn.vendor, "LIO-ORG",
-			sizeof(dev->t10_wwn.vendor));
-		strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod,
-			sizeof(dev->t10_wwn.model));
-		strlcpy(dev->t10_wwn.revision, dev->transport->inquiry_rev,
-			sizeof(dev->t10_wwn.revision));
-	}
-
 	scsi_dump_inquiry(dev);
 
 	spin_lock(&hba->device_lock);
Signature · 1 line
2.13.7