1: /*
2: * This file is free software: you may copy, redistribute and/or modify it
3: * under the terms of the GNU General Public License as published by the
4: * Free Software Foundation, either version 2 of the License, or (at your
5: * option) any later version.
6: *
7: * This file is distributed in the hope that it will be useful, but
8: * WITHOUT ANY WARRANTY; without even the implied warranty of
9: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10: * General Public License for more details.
11: *
12: * You should have received a copy of the GNU General Public License
13: * along with this program. If not, see <http://www.gnu.org/licenses/>.
14: *
15: * This file incorporates work covered by the following copyright and
16: * permission notice:
17: *
18: Copyright (c) 2007, 2008 by Juliusz Chroboczek
19:
20: Permission is hereby granted, free of charge, to any person obtaining a copy
21: of this software and associated documentation files (the "Software"), to deal
22: in the Software without restriction, including without limitation the rights
23: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
24: copies of the Software, and to permit persons to whom the Software is
25: furnished to do so, subject to the following conditions:
26:
27: The above copyright notice and this permission notice shall be included in
28: all copies or substantial portions of the Software.
29:
30: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
31: IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
32: FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
33: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
34: LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
35: OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
36: THE SOFTWARE.
37: */
38:
39: #ifndef BABEL_MESSAGE_H
40: #define BABEL_MESSAGE_H
41:
42: #include "babel_interface.h"
43:
44: #define MAX_BUFFERED_UPDATES 200
45:
46: #define BUCKET_TOKENS_MAX 200
47: #define BUCKET_TOKENS_PER_SEC 40
48:
49: #define MESSAGE_PAD1 0
50: #define MESSAGE_PADN 1
51: #define MESSAGE_ACK_REQ 2
52: #define MESSAGE_ACK 3
53: #define MESSAGE_HELLO 4
54: #define MESSAGE_IHU 5
55: #define MESSAGE_ROUTER_ID 6
56: #define MESSAGE_NH 7
57: #define MESSAGE_UPDATE 8
58: #define MESSAGE_REQUEST 9
59: #define MESSAGE_MH_REQUEST 10
60:
61:
62: extern unsigned short myseqno;
63: extern struct timeval seqno_time;
64:
65: extern int broadcast_ihu;
66: extern int split_horizon;
67:
68: extern unsigned char packet_header[4];
69:
70: extern struct neighbour *unicast_neighbour;
71: extern struct timeval unicast_flush_timeout;
72:
73: void parse_packet(const unsigned char *from, struct interface *ifp,
74: const unsigned char *packet, int packetlen);
75: void flushbuf(struct interface *ifp);
76: void flushupdates(struct interface *ifp);
77: void send_ack(struct neighbour *neigh, unsigned short nonce,
78: unsigned short interval);
79: void send_hello_noupdate(struct interface *ifp, unsigned interval);
80: void send_hello(struct interface *ifp);
81: void flush_unicast(int dofree);
82: void send_update(struct interface *ifp, int urgent,
83: const unsigned char *prefix, unsigned char plen);
84: void send_update_resend(struct interface *ifp,
85: const unsigned char *prefix, unsigned char plen);
86: void send_wildcard_retraction(struct interface *ifp);
87: void update_myseqno(void);
88: void send_self_update(struct interface *ifp);
89: void send_ihu(struct neighbour *neigh, struct interface *ifp);
90: void send_marginal_ihu(struct interface *ifp);
91: void send_request(struct interface *ifp,
92: const unsigned char *prefix, unsigned char plen);
93: void send_unicast_request(struct neighbour *neigh,
94: const unsigned char *prefix, unsigned char plen);
95: void send_multihop_request(struct interface *ifp,
96: const unsigned char *prefix, unsigned char plen,
97: unsigned short seqno, const unsigned char *id,
98: unsigned short hop_count);
99: void
100: send_unicast_multihop_request(struct neighbour *neigh,
101: const unsigned char *prefix, unsigned char plen,
102: unsigned short seqno, const unsigned char *id,
103: unsigned short hop_count);
104: void send_request_resend(struct neighbour *neigh,
105: const unsigned char *prefix, unsigned char plen,
106: unsigned short seqno, unsigned char *id);
107: void handle_request(struct neighbour *neigh, const unsigned char *prefix,
108: unsigned char plen, unsigned char hop_count,
109: unsigned short seqno, const unsigned char *id);
110:
111: #endif
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