add vlan_pcp tlv
diff --git a/openflow_input/bsn_tlv b/openflow_input/bsn_tlv
index 7e9b376..18701ea 100644
--- a/openflow_input/bsn_tlv
+++ b/openflow_input/bsn_tlv
@@ -474,3 +474,9 @@
     uint16_t length;
     uint64_t value;
 };
+
+struct of_bsn_tlv_vlan_pcp : of_bsn_tlv {
+    uint16_t type == 72;
+    uint16_t length;
+    uint8_t value;
+};