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718e3744 | 1 | /* |
2 | * OSPF Neighbor functions. | |
3 | * Copyright (C) 1999, 2000 Toshiaki Takada | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
896014f4 | 6 | * |
718e3744 | 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 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #ifndef _ZEBRA_OSPF_NEIGHBOR_H | |
23 | #define _ZEBRA_OSPF_NEIGHBOR_H | |
24 | ||
cd52c44c | 25 | #include <ospfd/ospf_gr.h> |
d3f0d621 | 26 | #include <ospfd/ospf_packet.h> |
27 | ||
718e3744 | 28 | /* Neighbor Data Structure */ |
d62a17ae | 29 | struct ospf_neighbor { |
30 | /* This neighbor's parent ospf interface. */ | |
31 | struct ospf_interface *oi; | |
32 | ||
33 | /* OSPF neighbor Information */ | |
d7c0a89a QY |
34 | uint8_t state; /* NSM status. */ |
35 | uint8_t dd_flags; /* DD bit flags. */ | |
36 | uint32_t dd_seqnum; /* DD Sequence Number. */ | |
d62a17ae | 37 | |
38 | /* Neighbor Information from Hello. */ | |
39 | struct prefix address; /* Neighbor Interface Address. */ | |
40 | ||
41 | struct in_addr src; /* Src address. */ | |
42 | struct in_addr router_id; /* Router ID. */ | |
d7c0a89a | 43 | uint8_t options; /* Options. */ |
d62a17ae | 44 | int priority; /* Router Priority. */ |
45 | struct in_addr d_router; /* Designated Router. */ | |
46 | struct in_addr bd_router; /* Backup Designated Router. */ | |
47 | ||
48 | /* Last sent Database Description packet. */ | |
49 | struct ospf_packet *last_send; | |
50 | /* Timestemp when last Database Description packet was sent */ | |
51 | struct timeval last_send_ts; | |
52 | ||
53 | /* Last received Databse Description packet. */ | |
54 | struct { | |
d7c0a89a QY |
55 | uint8_t options; |
56 | uint8_t flags; | |
57 | uint32_t dd_seqnum; | |
d62a17ae | 58 | } last_recv; |
59 | ||
60 | /* LSA data. */ | |
61 | struct ospf_lsdb ls_rxmt; | |
62 | struct ospf_lsdb db_sum; | |
63 | struct ospf_lsdb ls_req; | |
64 | struct ospf_lsa *ls_req_last; | |
65 | ||
d7c0a89a | 66 | uint32_t crypt_seqnum; /* Cryptographic Sequence Number. */ |
d62a17ae | 67 | |
68 | /* Timer values. */ | |
d7c0a89a QY |
69 | uint32_t v_inactivity; |
70 | uint32_t v_db_desc; | |
71 | uint32_t v_ls_req; | |
72 | uint32_t v_ls_upd; | |
d62a17ae | 73 | |
74 | /* Threads. */ | |
75 | struct thread *t_inactivity; | |
76 | struct thread *t_db_desc; | |
77 | struct thread *t_ls_req; | |
78 | struct thread *t_ls_upd; | |
79 | struct thread *t_hello_reply; | |
80 | ||
81 | /* NBMA configured neighbour */ | |
82 | struct ospf_nbr_nbma *nbr_nbma; | |
83 | ||
84 | /* Statistics */ | |
85 | struct timeval ts_last_progress; /* last advance of NSM */ | |
86 | struct timeval ts_last_regress; /* last regressive NSM change */ | |
87 | const char *last_regress_str; /* Event which last regressed NSM */ | |
d7c0a89a | 88 | uint32_t state_change; /* NSM state change counter */ |
d62a17ae | 89 | |
90 | /* BFD information */ | |
659f4e40 | 91 | struct bfd_session_params *bfd_session; |
f96f2713 | 92 | |
93 | /* ospf graceful restart HELPER info */ | |
94 | struct ospf_helper_info gr_helper_info; | |
718e3744 | 95 | }; |
96 | ||
97 | /* Macros. */ | |
98 | #define NBR_IS_DR(n) IPV4_ADDR_SAME (&n->address.u.prefix4, &n->d_router) | |
99 | #define NBR_IS_BDR(n) IPV4_ADDR_SAME (&n->address.u.prefix4, &n->bd_router) | |
100 | ||
101 | /* Prototypes. */ | |
d62a17ae | 102 | extern struct ospf_neighbor *ospf_nbr_new(struct ospf_interface *); |
103 | extern void ospf_nbr_free(struct ospf_neighbor *); | |
104 | extern void ospf_nbr_delete(struct ospf_neighbor *); | |
105 | extern int ospf_nbr_bidirectional(struct in_addr *, struct in_addr *, int); | |
106 | extern void ospf_nbr_self_reset(struct ospf_interface *, struct in_addr); | |
107 | extern void ospf_nbr_add_self(struct ospf_interface *, struct in_addr); | |
108 | extern int ospf_nbr_count(struct ospf_interface *, int); | |
109 | extern int ospf_nbr_count_opaque_capable(struct ospf_interface *); | |
110 | extern struct ospf_neighbor *ospf_nbr_get(struct ospf_interface *, | |
111 | struct ospf_header *, struct ip *, | |
112 | struct prefix *); | |
113 | extern struct ospf_neighbor *ospf_nbr_lookup(struct ospf_interface *, | |
114 | struct ip *, struct ospf_header *); | |
115 | extern struct ospf_neighbor *ospf_nbr_lookup_by_addr(struct route_table *, | |
116 | struct in_addr *); | |
117 | extern struct ospf_neighbor *ospf_nbr_lookup_by_routerid(struct route_table *, | |
118 | struct in_addr *); | |
119 | extern void ospf_renegotiate_optional_capabilities(struct ospf *top); | |
718e3744 | 120 | #endif /* _ZEBRA_OSPF_NEIGHBOR_H */ |