**breaking** route: consolidate routing tlv into route
refs: #5116
Plus some misc improvements
Change-Id: Id0902fec65160b4368b1b5066f460433aced98ed
diff --git a/src/tlv-nlsr.hpp b/src/tlv-nlsr.hpp
new file mode 100644
index 0000000..93cfd2d
--- /dev/null
+++ b/src/tlv-nlsr.hpp
@@ -0,0 +1,59 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2014-2020, The University of Memphis,
+ * Regents of the University of California,
+ * Arizona Board of Regents.
+ *
+ * This file is part of NLSR (Named-data Link State Routing).
+ * See AUTHORS.md for complete list of NLSR authors and contributors.
+ *
+ * NLSR is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NLSR is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NLSR, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef NLSR_TLV_NLSR_HPP
+#define NLSR_TLV_NLSR_HPP
+
+#include <ndn-cxx/encoding/tlv.hpp>
+
+namespace ndn {
+namespace tlv {
+namespace nlsr {
+
+/*! The TLV block types that NLSR uses to encode/decode LSA types. The
+ * way NLSR encodes LSAs to TLV is by encoding each element of the
+ * LSA as a separate TLV block. So, block types are needed. These are
+ * used in the LSDB Status Dataset.
+ */
+enum {
+ Lsa = 128,
+ SequenceNumber = 130,
+ AdjacencyLsa = 131,
+ Adjacency = 132,
+ CoordinateLsa = 133,
+ CostDouble = 134,
+ HyperbolicRadius = 135,
+ HyperbolicAngle = 136,
+ NameLsa = 137,
+ LsdbStatus = 138,
+ ExpirationTime = 139,
+ Cost = 140,
+ Uri = 141,
+ NextHop = 143,
+ RoutingTable = 144,
+ RoutingTableEntry = 145
+};
+
+} // namespace nlsr
+} // namespace tlv
+} // namespace ndn
+
+#endif // NLSR_TLV_NLSR_HPP