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718e3744 | 1 | /* AS path related definitions. |
2 | Copyright (C) 1997, 98, 99 Kunihiro Ishiguro | |
3 | ||
4 | This file is part of GNU Zebra. | |
5 | ||
6 | GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the | |
8 | Free Software Foundation; either version 2, or (at your option) any | |
9 | later version. | |
10 | ||
11 | GNU Zebra is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | 02111-1307, USA. */ | |
20 | ||
21 | /* AS path segment type. */ | |
22 | #define AS_SET 1 | |
23 | #define AS_SEQUENCE 2 | |
24 | #define AS_CONFED_SEQUENCE 3 | |
25 | #define AS_CONFED_SET 4 | |
26 | ||
27 | /* Private AS range defined in RFC2270. */ | |
fd79ac91 | 28 | #define BGP_PRIVATE_AS_MIN 64512U |
29 | #define BGP_PRIVATE_AS_MAX 65535U | |
30 | ||
31 | #define BGP_AS_MAX 65535U | |
718e3744 | 32 | |
33 | /* AS path may be include some AsSegments. */ | |
34 | struct aspath | |
35 | { | |
36 | /* Reference count to this aspath. */ | |
37 | unsigned long refcnt; | |
38 | ||
39 | /* Rawdata length. */ | |
40 | int length; | |
41 | ||
42 | /* AS count. */ | |
43 | int count; | |
44 | ||
45 | /* Rawdata. */ | |
46 | caddr_t data; | |
47 | ||
48 | /* String expression of AS path. This string is used by vty output | |
49 | and AS path regular expression match. */ | |
50 | char *str; | |
51 | }; | |
52 | ||
53 | #define ASPATH_STR_DEFAULT_LEN 32 | |
54 | ||
55 | /* Prototypes. */ | |
56 | void aspath_init (); | |
57 | struct aspath *aspath_parse (); | |
58 | struct aspath *aspath_dup (struct aspath *); | |
59 | struct aspath *aspath_aggregate (struct aspath *, struct aspath *); | |
60 | struct aspath *aspath_prepend (struct aspath *, struct aspath *); | |
61 | struct aspath *aspath_add_seq (struct aspath *, as_t); | |
62 | struct aspath *aspath_add_confed_seq (struct aspath *, as_t); | |
63 | int aspath_cmp_left (struct aspath *, struct aspath *); | |
64 | int aspath_cmp_left_confed (struct aspath *, struct aspath *); | |
65 | struct aspath *aspath_delete_confed_seq (struct aspath *); | |
66 | struct aspath *aspath_empty (); | |
67 | struct aspath *aspath_empty_get (); | |
fd79ac91 | 68 | struct aspath *aspath_str2aspath (const char *); |
718e3744 | 69 | void aspath_free (struct aspath *); |
70 | struct aspath *aspath_intern (struct aspath *); | |
71 | void aspath_unintern (struct aspath *); | |
72 | const char *aspath_print (struct aspath *); | |
73 | void aspath_print_vty (struct vty *, struct aspath *); | |
74 | void aspath_print_all_vty (struct vty *); | |
75 | unsigned int aspath_key_make (struct aspath *); | |
76 | int aspath_loop_check (struct aspath *, as_t); | |
77 | int aspath_private_as_check (struct aspath *); | |
78 | int aspath_firstas_check (struct aspath *, as_t); | |
79 | unsigned long aspath_count (); |