1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/* $OpenBSD: ospf.h,v 1.10 2010/08/04 16:47:01 sthen Exp $ */
/*
* Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
*/
#define OSPF_TYPE_UMD 0 /* UMd's special monitoring packets */
#define OSPF_TYPE_HELLO 1 /* Hello */
#define OSPF_TYPE_DB 2 /* Database Description */
#define OSPF_TYPE_LSR 3 /* Link State Request */
#define OSPF_TYPE_LSU 4 /* Link State Update */
#define OSPF_TYPE_LSA 5 /* Link State Ack */
#define OSPF_TYPE_MAX 6
/* Options *_options */
#define OSPF_OPTION_T 0x01 /* T bit: TOS support */
#define OSPF_OPTION_E 0x02 /* E bit: External routes advertised */
#define OSPF_OPTION_MC 0x04 /* MC bit: Multicast capable */
/* ospf_authtype */
#define OSPF_AUTH_NONE 0 /* No auth-data */
#define OSPF_AUTH_SIMPLE 1 /* Simple password */
#define OSPF_AUTH_MD5 2 /* MD5 authentication */
#define OSPF_AUTH_MD5_LEN 16 /* length of MD5 authentication */
/* db_flags */
#define OSPF_DB_INIT 0x04 /* */
#define OSPF_DB_MORE 0x02
#define OSPF_DB_MASTER 0x01
/* ls_type */
#define LS_TYPE_ROUTER 1 /* router link */
#define LS_TYPE_NETWORK 2 /* network link */
#define LS_TYPE_SUM_IP 3 /* summary link */
#define LS_TYPE_SUM_ABR 4 /* summary area link */
#define LS_TYPE_ASE 5 /* ASE */
#define LS_TYPE_GROUP 6 /* Group membership (multicast */
/* extensions 23 July 1991) */
#define LS_TYPE_MAX 7
/*************************************************
*
* is the above a bug in the documentation?
*
*************************************************/
/* rla_link.link_type */
#define RLA_TYPE_ROUTER 1 /* point-to-point to another router */
#define RLA_TYPE_TRANSIT 2 /* connection to transit network */
#define RLA_TYPE_STUB 3 /* connection to stub network */
#define RLA_TYPE_VIRTUAL 4 /* virtual link */
/* rla_flags */
#define RLA_FLAG_B 0x01
#define RLA_FLAG_E 0x02
#define RLA_FLAG_W1 0x04
#define RLA_FLAG_W2 0x08
/* sla_tosmetric breakdown */
#define SLA_MASK_TOS 0x7f000000
#define SLA_MASK_METRIC 0x00ffffff
#define SLA_SHIFT_TOS 24
/* asla_tosmetric breakdown */
#define ASLA_FLAG_EXTERNAL 0x80000000
#define ASLA_MASK_TOS 0x7f000000
#define ASLA_SHIFT_TOS 24
#define ASLA_MASK_METRIC 0x00ffffff
/* multicast vertex type */
#define MCLA_VERTEX_ROUTER 1
#define MCLA_VERTEX_NETWORK 2
/* link state advertisement header */
struct lsa_hdr {
u_short ls_age;
u_char ls_options;
u_char ls_type;
struct in_addr ls_stateid;
struct in_addr ls_router;
u_int32_t ls_seq;
u_short ls_chksum;
u_short ls_length;
} ;
/* link state advertisement */
struct lsa {
struct lsa_hdr ls_hdr;
/* Link state types */
union {
/* Router links advertisements */
struct {
u_char rla_flags;
u_char rla_zero[1];
u_short rla_count;
struct rlalink {
struct in_addr link_id;
struct in_addr link_data;
u_char link_type;
u_char link_toscount;
u_short link_tos0metric;
} rla_link[1]; /* may repeat */
} un_rla;
/* Network links advertisements */
struct {
struct in_addr nla_mask;
struct in_addr nla_router[1]; /* may repeat */
} un_nla;
/* Summary links advertisements */
struct {
struct in_addr sla_mask;
u_int32_t sla_tosmetric[1]; /* may repeat */
} un_sla;
/* AS external links advertisements */
struct {
struct in_addr asla_mask;
struct aslametric {
u_int32_t asla_tosmetric;
struct in_addr asla_forward;
u_int32_t asla_tag;
} asla_metric[1]; /* may repeat */
} un_asla;
/* Multicast group membership */
struct mcla {
u_int32_t mcla_vtype;
struct in_addr mcla_vid;
} un_mcla[1];
} lsa_un;
} ;
/*
* TOS metric struct (will be 0 or more in router links update)
*/
struct tos_metric {
u_char tos_type;
u_char tos_zero;
u_short tos_metric;
} ;
#define OSPF_AUTH_SIZE 8
/*
* the main header
*/
struct ospfhdr {
u_char ospf_version;
u_char ospf_type;
u_short ospf_len;
struct in_addr ospf_routerid;
struct in_addr ospf_areaid;
u_short ospf_chksum;
u_short ospf_authtype;
u_char ospf_authdata[OSPF_AUTH_SIZE];
union {
/* Hello packet */
struct {
struct in_addr hello_mask;
u_short hello_helloint;
u_char hello_options;
u_char hello_priority;
u_int32_t hello_deadint;
struct in_addr hello_dr;
struct in_addr hello_bdr;
struct in_addr hello_neighbor[1]; /* may repeat */
} un_hello;
/* Database Description packet */
struct {
u_int16_t db_mtu;
u_char db_options;
u_char db_flags;
u_int32_t db_seq;
struct lsa_hdr db_lshdr[1]; /* may repeat */
} un_db;
/* Link State Request */
struct lsr {
u_int32_t ls_type;
struct in_addr ls_stateid;
struct in_addr ls_router;
} un_lsr[1]; /* may repeat */
/* Link State Update */
struct {
u_int32_t lsu_count;
struct lsa lsu_lsa[1]; /* may repeat */
} un_lsu;
/* Link State Acknowledgement */
struct {
struct lsa_hdr lsa_lshdr[1]; /* may repeat */
} un_lsa ;
} ospf_un ;
} ;
#define ospf_hello ospf_un.un_hello
#define ospf_db ospf_un.un_db
#define ospf_lsr ospf_un.un_lsr
#define ospf_lsu ospf_un.un_lsu
#define ospf_lsa ospf_un.un_lsa
|
