[SCSI] iscsi class: fix vlan configuration

Userspace was sending the priority/id part of the vlan tag
and sysfs was displaying the id in the vlan file. This
renames the vlan sysfs file to vlan_id to reflect that it
was showing the id and to match the vlan_priority file.
This also adds a ISCSI_NET_PARAM_VLAN_TAG iscsi nl command
to relfect that we are sending down the vlan/priority
part of the tag.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 142a09a..1bcd65a 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -322,7 +322,7 @@
 
 /* common read only iface attribute */
 iscsi_iface_net_attr(iface, enabled, ISCSI_NET_PARAM_IFACE_ENABLE);
-iscsi_iface_net_attr(iface, vlan, ISCSI_NET_PARAM_VLAN_ID);
+iscsi_iface_net_attr(iface, vlan_id, ISCSI_NET_PARAM_VLAN_ID);
 iscsi_iface_net_attr(iface, vlan_priority, ISCSI_NET_PARAM_VLAN_PRIORITY);
 iscsi_iface_net_attr(iface, vlan_enabled, ISCSI_NET_PARAM_VLAN_ENABLED);
 iscsi_iface_net_attr(iface, mtu, ISCSI_NET_PARAM_MTU);
@@ -338,7 +338,7 @@
 
 	if (attr == &dev_attr_iface_enabled.attr)
 		param = ISCSI_NET_PARAM_IFACE_ENABLE;
-	else if (attr == &dev_attr_iface_vlan.attr)
+	else if (attr == &dev_attr_iface_vlan_id.attr)
 		param = ISCSI_NET_PARAM_VLAN_ID;
 	else if (attr == &dev_attr_iface_vlan_priority.attr)
 		param = ISCSI_NET_PARAM_VLAN_PRIORITY;
@@ -382,7 +382,7 @@
 
 static struct attribute *iscsi_iface_attrs[] = {
 	&dev_attr_iface_enabled.attr,
-	&dev_attr_iface_vlan.attr,
+	&dev_attr_iface_vlan_id.attr,
 	&dev_attr_iface_vlan_priority.attr,
 	&dev_attr_iface_vlan_enabled.attr,
 	&dev_attr_ipv4_iface_ipaddress.attr,