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+/*
+ * 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:
+ *
+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
+#define BABEL_MESSAGE_H
+
+#include "babel_interface.h"
+
+#define MAX_BUFFERED_UPDATES 200
+
+#define BUCKET_TOKENS_MAX 200
+#define BUCKET_TOKENS_PER_SEC 40
+
+#define MESSAGE_PAD1 0
+#define MESSAGE_PADN 1
+#define MESSAGE_ACK_REQ 2
+#define MESSAGE_ACK 3
+#define MESSAGE_HELLO 4
+#define MESSAGE_IHU 5
+#define MESSAGE_ROUTER_ID 6
+#define MESSAGE_NH 7
+#define MESSAGE_UPDATE 8
+#define MESSAGE_REQUEST 9
+#define MESSAGE_MH_REQUEST 10
+
+
+extern unsigned short myseqno;
+extern struct timeval seqno_time;
+
+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;
+
+void parse_packet(const unsigned char *from, struct interface *ifp,
+ const unsigned char *packet, int packetlen);
+void flushbuf(struct interface *ifp);
+void flushupdates(struct interface *ifp);
+void send_ack(struct neighbour *neigh, unsigned short nonce,
+ unsigned short interval);
+void send_hello_noupdate(struct interface *ifp, unsigned interval);
+void send_hello(struct interface *ifp);
+void flush_unicast(int dofree);
+void send_update(struct interface *ifp, int urgent,
+ const unsigned char *prefix, unsigned char plen);
+void send_update_resend(struct interface *ifp,
+ const unsigned char *prefix, unsigned char plen);
+void send_wildcard_retraction(struct interface *ifp);
+void update_myseqno(void);
+void send_self_update(struct interface *ifp);
+void send_ihu(struct neighbour *neigh, struct interface *ifp);
+void send_marginal_ihu(struct interface *ifp);
+void send_request(struct interface *ifp,
+ const unsigned char *prefix, unsigned char plen);
+void send_unicast_request(struct neighbour *neigh,
+ const unsigned char *prefix, unsigned char plen);
+void send_multihop_request(struct interface *ifp,
+ const unsigned char *prefix, unsigned char plen,
+ unsigned short seqno, const unsigned char *id,
+ unsigned short hop_count);
+void
+send_unicast_multihop_request(struct neighbour *neigh,
+ const unsigned char *prefix, unsigned char plen,
+ unsigned short seqno, const unsigned char *id,
+ unsigned short hop_count);
+void send_request_resend(struct neighbour *neigh,
+ const unsigned char *prefix, unsigned char plen,
+ unsigned short seqno, unsigned char *id);
+void handle_request(struct neighbour *neigh, const unsigned char *prefix,
+ unsigned char plen, unsigned char hop_count,
+ unsigned short seqno, const unsigned char *id);
+
+#endif