[SCSI] scsi_transport_sas: introduce a sas_port entity

this patch introduces a port object, separates out ports and phys,
with ports becoming the primary objects of the tree.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Author: James Bottomley

drivers/scsi/scsi_sas_internal.h

@@ -2,7 +2,8 @@
 #define _SCSI_SAS_INTERNAL_H
 
 #define SAS_HOST_ATTRS		0
-#define SAS_PORT_ATTRS		17
+#define SAS_PHY_ATTRS		17
+#define SAS_PORT_ATTRS		1
 #define SAS_RPORT_ATTRS		7
 #define SAS_END_DEV_ATTRS	3
 #define SAS_EXPANDER_ATTRS	7
@@ -13,12 +14,14 @@ struct sas_internal {
 	struct sas_domain_function_template *dft;
 
 	struct class_device_attribute private_host_attrs[SAS_HOST_ATTRS];
-	struct class_device_attribute private_phy_attrs[SAS_PORT_ATTRS];
+	struct class_device_attribute private_phy_attrs[SAS_PHY_ATTRS];
+	struct class_device_attribute private_port_attrs[SAS_PORT_ATTRS];
 	struct class_device_attribute private_rphy_attrs[SAS_RPORT_ATTRS];
 	struct class_device_attribute private_end_dev_attrs[SAS_END_DEV_ATTRS];
 	struct class_device_attribute private_expander_attrs[SAS_EXPANDER_ATTRS];
 
 	struct transport_container phy_attr_cont;
+	struct transport_container port_attr_cont;
 	struct transport_container rphy_attr_cont;
 	struct transport_container end_dev_attr_cont;
 	struct transport_container expander_attr_cont;
@@ -28,7 +31,8 @@ struct sas_internal {
 	 * needed by scsi_sysfs.c
 	 */
 	struct class_device_attribute *host_attrs[SAS_HOST_ATTRS + 1];
-	struct class_device_attribute *phy_attrs[SAS_PORT_ATTRS + 1];
+	struct class_device_attribute *phy_attrs[SAS_PHY_ATTRS + 1];
+	struct class_device_attribute *port_attrs[SAS_PORT_ATTRS + 1];
 	struct class_device_attribute *rphy_attrs[SAS_RPORT_ATTRS + 1];
 	struct class_device_attribute *end_dev_attrs[SAS_END_DEV_ATTRS + 1];
 	struct class_device_attribute *expander_attrs[SAS_EXPANDER_ATTRS + 1];