[SCSI] fc: Add GSPN_ID request to header file

Add request code and corresponding structs for "Get Symbolic Port
Name" (GSPN_ID) request.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

include/scsi/fc/fc_ns.h

@@ -41,6 +41,7 @@ enum fc_ns_req {
 	FC_NS_GI_A =	0x0101,		/* get identifiers - scope */
 	FC_NS_GPN_ID =	0x0112,		/* get port name by ID */
 	FC_NS_GNN_ID =	0x0113,		/* get node name by ID */
+	FC_NS_GSPN_ID = 0x0118,		/* get symbolic port name */
 	FC_NS_GID_PN =	0x0121,		/* get ID for port name */
 	FC_NS_GID_NN =	0x0131,		/* get IDs for node name */
 	FC_NS_GID_FT =	0x0171,		/* get IDs by FC4 type */
@@ -144,13 +145,21 @@ struct fc_ns_gid_pn {
 };
 
 /*
- * GID_PN response
+ * GID_PN response or GSPN_ID request
  */
 struct fc_gid_pn_resp {
 	__u8      fp_resvd;
 	__u8      fp_fid[3];     /* port ID */
 };
 
+/*
+ * GSPN_ID response
+ */
+struct fc_gspn_resp {
+	__u8	fp_name_len;
+	char	fp_name[];
+};
+
 /*
  * RFT_ID request - register FC-4 types for ID.
  */