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1 | // SPDX-License-Identifier: MIT | |
2 | /* | |
3 | Copyright (c) 2007, 2008 by Juliusz Chroboczek | |
4 | */ | |
5 | ||
6 | #ifndef BABEL_MESSAGE_H | |
7 | #define BABEL_MESSAGE_H | |
8 | ||
9 | #include "babel_interface.h" | |
10 | ||
11 | #define MAX_BUFFERED_UPDATES 200 | |
12 | ||
13 | #define BUCKET_TOKENS_MAX 200 | |
14 | #define BUCKET_TOKENS_PER_SEC 40 | |
15 | ||
16 | /* A registry of assigned TLV and sub-TLV types is available at | |
17 | http://www.pps.univ-paris-diderot.fr/~jch/software/babel/babel-tlv-registry.text | |
18 | */ | |
19 | #define MESSAGE_PAD1 0 | |
20 | #define MESSAGE_PADN 1 | |
21 | #define MESSAGE_ACK_REQ 2 | |
22 | #define MESSAGE_ACK 3 | |
23 | #define MESSAGE_HELLO 4 | |
24 | #define MESSAGE_IHU 5 | |
25 | #define MESSAGE_ROUTER_ID 6 | |
26 | #define MESSAGE_NH 7 | |
27 | #define MESSAGE_UPDATE 8 | |
28 | #define MESSAGE_REQUEST 9 | |
29 | #define MESSAGE_MH_REQUEST 10 | |
30 | #define MESSAGE_MAX 10 | |
31 | ||
32 | /* Protocol extension through sub-TLVs. */ | |
33 | #define SUBTLV_PAD1 0 | |
34 | #define SUBTLV_PADN 1 | |
35 | #define SUBTLV_DIVERSITY 2 /* Also known as babelz. */ | |
36 | #define SUBTLV_TIMESTAMP 3 /* Used to compute RTT. */ | |
37 | #define SUBTLV_MANDATORY 0x80 | |
38 | ||
39 | extern unsigned short myseqno; | |
40 | ||
41 | extern int broadcast_ihu; | |
42 | extern int split_horizon; | |
43 | ||
44 | extern struct neighbour *unicast_neighbour; | |
45 | extern struct timeval unicast_flush_timeout; | |
46 | ||
47 | void parse_packet(const unsigned char *from, struct interface *ifp, | |
48 | const unsigned char *packet, int packetlen); | |
49 | void flushbuf(struct interface *ifp); | |
50 | void flushupdates(struct interface *ifp); | |
51 | void send_ack(struct neighbour *neigh, unsigned short nonce, | |
52 | unsigned short interval); | |
53 | void send_hello_noupdate(struct interface *ifp, unsigned interval); | |
54 | void send_hello(struct interface *ifp); | |
55 | void flush_unicast(int dofree); | |
56 | void send_update(struct interface *ifp, int urgent, | |
57 | const unsigned char *prefix, unsigned char plen); | |
58 | void send_update_resend(struct interface *ifp, | |
59 | const unsigned char *prefix, unsigned char plen); | |
60 | void send_wildcard_retraction(struct interface *ifp); | |
61 | void update_myseqno(void); | |
62 | void send_self_update(struct interface *ifp); | |
63 | void send_ihu(struct neighbour *neigh, struct interface *ifp); | |
64 | void send_marginal_ihu(struct interface *ifp); | |
65 | void send_request(struct interface *ifp, | |
66 | const unsigned char *prefix, unsigned char plen); | |
67 | void send_unicast_request(struct neighbour *neigh, | |
68 | const unsigned char *prefix, unsigned char plen); | |
69 | void send_multihop_request(struct interface *ifp, | |
70 | const unsigned char *prefix, unsigned char plen, | |
71 | unsigned short seqno, const unsigned char *id, | |
72 | unsigned short hop_count); | |
73 | void | |
74 | send_unicast_multihop_request(struct neighbour *neigh, | |
75 | const unsigned char *prefix, unsigned char plen, | |
76 | unsigned short seqno, const unsigned char *id, | |
77 | unsigned short hop_count); | |
78 | void send_request_resend(struct neighbour *neigh, | |
79 | const unsigned char *prefix, unsigned char plen, | |
80 | unsigned short seqno, unsigned char *id); | |
81 | void handle_request(struct neighbour *neigh, const unsigned char *prefix, | |
82 | unsigned char plen, unsigned char hop_count, | |
83 | unsigned short seqno, const unsigned char *id); | |
84 | ||
85 | #endif |