Merge pull request #13484 from sri-mohan1/srib-ldpd

[mirror_frr.git] / babeld / message.h

diff --git a/babeld/message.h b/babeld/message.h
index 1626a887a43070bb9bab765ba124fa7d77ab5a99..7cf062a88824c533aae6bb66918d7ba8c9fa9eac 100644 (file)
--- a/babeld/message.h
+++ b/babeld/message.h
@@ -1,39 +1,6 @@
-/*  
- *  This file is free software: you may copy, redistribute and/or modify it  
- *  under the terms of the GNU General Public License as published by the  
- *  Free Software Foundation, either version 2 of the License, or (at your  
- *  option) any later version.  
- *  
- *  This file 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 this program.  If not, see <http://www.gnu.org/licenses/>.  
- *  
- * This file incorporates work covered by the following copyright and  
- * permission notice:  
- *  
+// SPDX-License-Identifier: MIT
+/*
 Copyright (c) 2007, 2008 by Juliusz Chroboczek
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
 */
 
 #ifndef BABEL_MESSAGE_H
@@ -46,6 +13,9 @@ THE SOFTWARE.
 #define BUCKET_TOKENS_MAX 200
 #define BUCKET_TOKENS_PER_SEC 40
 
+/* A registry of assigned TLV and sub-TLV types is available at
+   http://www.pps.univ-paris-diderot.fr/~jch/software/babel/babel-tlv-registry.text
+*/
 #define MESSAGE_PAD1 0
 #define MESSAGE_PADN 1
 #define MESSAGE_ACK_REQ 2
@@ -57,17 +27,21 @@ THE SOFTWARE.
 #define MESSAGE_UPDATE 8
 #define MESSAGE_REQUEST 9
 #define MESSAGE_MH_REQUEST 10
+#define MESSAGE_MAX 10
 
+/* Protocol extension through sub-TLVs. */
+#define SUBTLV_PAD1 0
+#define SUBTLV_PADN 1
+#define SUBTLV_DIVERSITY 2 /* Also known as babelz. */
+#define SUBTLV_TIMESTAMP 3 /* Used to compute RTT. */
+#define SUBTLV_SOURCE_PREFIX 128 /* Source-specific routing. */
+#define SUBTLV_MANDATORY 0x80
 
 extern unsigned short myseqno;
-extern struct timeval seqno_time;
 
-extern int parasitic;
 extern int broadcast_ihu;
 extern int split_horizon;
 
-extern unsigned char packet_header[4];
-
 extern struct neighbour *unicast_neighbour;
 extern struct timeval unicast_flush_timeout;