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gerrit.opencord.org / quagga / 6fe70d1b35c189cb1e488b2c26551ba7baac6148 / . / ospfd / ospf_neighbor.h
blob: cbfbc2d8ad8458ea107e8a32d05af53ec2ec0319 [file] [log] [blame]
paul718e3742002-12-13 20:15:29 +0000[diff] [blame]1/*
2 * OSPF Neighbor functions.
3 * Copyright (C) 1999, 2000 Toshiaki Takada
4 *
5 * This file is part of GNU Zebra.
6 *
7 * GNU Zebra is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published
9 * by the Free Software Foundation; either version 2, or (at your
10 * option) any later version.
11 *
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Zebra; see the file COPYING. If not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
21 */
22
23#ifndef _ZEBRA_OSPF_NEIGHBOR_H
24#define _ZEBRA_OSPF_NEIGHBOR_H
25
pauld3f0d622004-05-05 15:27:15 +0000[diff] [blame]26#include <ospfd/ospf_packet.h>
27
paul718e3742002-12-13 20:15:29 +0000[diff] [blame]28/* Neighbor Data Structure */
29struct ospf_neighbor
30{
31 /* This neighbor's parent ospf interface. */
32 struct ospf_interface *oi;
33
34 /* OSPF neighbor Information */
35 u_char state; /* NSM status. */
36 u_char dd_flags; /* DD bit flags. */
37 u_int32_t dd_seqnum; /* DD Sequence Number. */
38
39 /* Neighbor Information from Hello. */
40 struct prefix address; /* Neighbor Interface Address. */
41
42 struct in_addr src; /* Src address. */
43 struct in_addr router_id; /* Router ID. */
44 u_char options; /* Options. */
45 int priority; /* Router Priority. */
46 struct in_addr d_router; /* Designated Router. */
47 struct in_addr bd_router; /* Backup Designated Router. */
48
49 /* Last sent Database Description packet. */
50 struct ospf_packet *last_send;
51 /* Timestemp when last Database Description packet was sent */
52 struct timeval last_send_ts;
53
54 /* Last received Databse Description packet. */
55 struct
56 {
57 u_char options;
58 u_char flags;
59 u_int32_t dd_seqnum;
60 } last_recv;
61
62 /* LSA data. */
63 struct ospf_lsdb ls_rxmt;
64 struct ospf_lsdb db_sum;
65 struct ospf_lsdb ls_req;
66 struct ospf_lsa *ls_req_last;
67
68 u_int32_t crypt_seqnum; /* Cryptographic Sequence Number. */
69
70 /* Timer values. */
71 u_int32_t v_inactivity;
72 u_int32_t v_db_desc;
73 u_int32_t v_ls_req;
74 u_int32_t v_ls_upd;
75
76 /* Threads. */
77 struct thread *t_inactivity;
78 struct thread *t_db_desc;
79 struct thread *t_ls_req;
80 struct thread *t_ls_upd;
81 struct thread *t_hello_reply;
82
83 /* Statistics Field */
84 u_int32_t state_change;
85 struct ospf_nbr_nbma *nbr_nbma;
86};
87
88/* Macros. */
89#define NBR_IS_DR(n) IPV4_ADDR_SAME (&n->address.u.prefix4, &n->d_router)
90#define NBR_IS_BDR(n) IPV4_ADDR_SAME (&n->address.u.prefix4, &n->bd_router)
91
92/* Prototypes. */
paul4dadc292005-05-06 21:37:42 +0000[diff] [blame]93extern struct ospf_neighbor *ospf_nbr_new (struct ospf_interface *);
94extern void ospf_nbr_free (struct ospf_neighbor *);
95extern void ospf_nbr_delete (struct ospf_neighbor *);
96extern int ospf_nbr_bidirectional (struct in_addr *, struct in_addr *, int);
97extern void ospf_nbr_add_self (struct ospf_interface *);
98extern int ospf_nbr_count (struct ospf_interface *, int);
paul718e3742002-12-13 20:15:29 +0000[diff] [blame]99#ifdef HAVE_OPAQUE_LSA
paul4dadc292005-05-06 21:37:42 +0000[diff] [blame]100extern int ospf_nbr_count_opaque_capable (struct ospf_interface *);
paul718e3742002-12-13 20:15:29 +0000[diff] [blame]101#endif /* HAVE_OPAQUE_LSA */
paul4dadc292005-05-06 21:37:42 +0000[diff] [blame]102extern struct ospf_neighbor *ospf_nbr_get (struct ospf_interface *,
103 struct ospf_header *,
104 struct ip *, struct prefix *);
105extern struct ospf_neighbor *ospf_nbr_lookup (struct ospf_interface *,
106 struct ip *,
107 struct ospf_header *);
108extern struct ospf_neighbor *ospf_nbr_lookup_by_addr (struct route_table *,
109 struct in_addr *);
110extern struct ospf_neighbor *ospf_nbr_lookup_by_routerid (struct route_table
111 *,
112 struct in_addr *);
113extern void ospf_renegotiate_optional_capabilities (struct ospf *top);
paul718e3742002-12-13 20:15:29 +0000[diff] [blame]114
115#endif /* _ZEBRA_OSPF_NEIGHBOR_H */