Annotation of embedaddon/quagga/ospfd/ospf_route.h, revision 1.1.1.3
1.1 misho 1: /*
2: * OSPF routing table.
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 it
8: * under the terms of the GNU General Public License as published by the
9: * Free Software Foundation; either version 2, or (at your option) any
10: * 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 Free
19: * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20: * 02111-1307, USA.
21: */
22:
23: #ifndef _ZEBRA_OSPF_ROUTE_H
24: #define _ZEBRA_OSPF_ROUTE_H
25:
26: #define OSPF_DESTINATION_ROUTER 1
27: #define OSPF_DESTINATION_NETWORK 2
28: #define OSPF_DESTINATION_DISCARD 3
29:
30: #define OSPF_PATH_MIN 0
31: #define OSPF_PATH_INTRA_AREA 1
32: #define OSPF_PATH_INTER_AREA 2
33: #define OSPF_PATH_TYPE1_EXTERNAL 3
34: #define OSPF_PATH_TYPE2_EXTERNAL 4
35: #define OSPF_PATH_MAX 5
36:
37: /* OSPF Path. */
38: struct ospf_path
39: {
40: struct in_addr nexthop;
41: struct in_addr adv_router;
1.1.1.3 ! misho 42: ifindex_t ifindex;
1.1 misho 43: };
44:
45: /* Below is the structure linked to every
46: route node. Note that for Network routing
47: entries a single ospf_route is kept, while
48: for ABRs and ASBRs (Router routing entries),
49: we link an instance of ospf_router_route
50: where a list of paths is maintained, so
51:
52: nr->info is a (struct ospf_route *) for OSPF_DESTINATION_NETWORK
53: but
54: nr->info is a (struct ospf_router_route *) for OSPF_DESTINATION_ROUTER
55: */
56:
57: struct route_standard
58: {
59: /* Link Sate Origin. */
60: struct lsa_header *origin;
61:
62: /* Associated Area. */
63: struct in_addr area_id; /* The area the route belongs to */
64:
65: /* Area Type */
66: int external_routing;
67:
68: /* Optional Capability. */
69: u_char options; /* Get from LSA header. */
70:
71: /* */
72: u_char flags; /* From router-LSA */
73: };
74:
75: struct route_external
76: {
77: /* Link State Origin. */
78: struct ospf_lsa *origin;
79:
80: /* Link State Cost Type2. */
81: u_int32_t type2_cost;
82:
83: /* Tag value. */
84: u_int32_t tag;
85:
86: /* ASBR route. */
87: struct ospf_route *asbr;
88: };
89:
90: struct ospf_route
91: {
92: /* Create time. */
93: time_t ctime;
94:
95: /* Modified time. */
96: time_t mtime;
97:
98: /* Destination Type. */
99: u_char type;
100:
101: /* Destination ID. */ /* i.e. Link State ID. */
102: struct in_addr id;
103:
104: /* Address Mask. */
105: struct in_addr mask; /* Only valid for networks. */
106:
107: /* Path Type. */
108: u_char path_type;
109:
110: /* List of Paths. */
111: struct list *paths;
112:
113: /* Link State Cost. */
114: u_int32_t cost; /* i.e. metric. */
115:
116: /* Route specific info. */
117: union
118: {
119: struct route_standard std;
120: struct route_external ext;
121: } u;
122: };
123:
124: extern struct ospf_path *ospf_path_new (void);
125: extern void ospf_path_free (struct ospf_path *);
126: extern struct ospf_path *ospf_path_lookup (struct list *, struct ospf_path *);
127: extern struct ospf_route *ospf_route_new (void);
128: extern void ospf_route_free (struct ospf_route *);
129: extern void ospf_route_delete (struct route_table *);
130: extern void ospf_route_table_free (struct route_table *);
131:
132: extern void ospf_route_install (struct ospf *, struct route_table *);
133: extern void ospf_route_table_dump (struct route_table *);
134:
135: extern void ospf_intra_add_router (struct route_table *, struct vertex *,
136: struct ospf_area *);
137:
138: extern void ospf_intra_add_transit (struct route_table *, struct vertex *,
139: struct ospf_area *);
140:
141: extern void ospf_intra_add_stub (struct route_table *,
142: struct router_lsa_link *, struct vertex *,
143: struct ospf_area *,
1.1.1.2 misho 144: int parent_is_root, int);
1.1 misho 145:
146: extern int ospf_route_cmp (struct ospf *, struct ospf_route *,
147: struct ospf_route *);
148: extern void ospf_route_copy_nexthops (struct ospf_route *, struct list *);
149: extern void ospf_route_copy_nexthops_from_vertex (struct ospf_route *,
150: struct vertex *);
151:
152: extern void ospf_route_subst (struct route_node *, struct ospf_route *,
153: struct ospf_route *);
154: extern void ospf_route_add (struct route_table *, struct prefix_ipv4 *,
155: struct ospf_route *, struct ospf_route *);
156:
157: extern void ospf_route_subst_nexthops (struct ospf_route *, struct list *);
158: extern void ospf_prune_unreachable_networks (struct route_table *);
159: extern void ospf_prune_unreachable_routers (struct route_table *);
160: extern int ospf_add_discard_route (struct route_table *, struct ospf_area *,
161: struct prefix_ipv4 *);
1.1.1.2 misho 162: extern void ospf_delete_discard_route (struct route_table *, struct prefix_ipv4 *);
1.1 misho 163: extern int ospf_route_match_same (struct route_table *, struct prefix_ipv4 *,
164: struct ospf_route *);
165:
166: #endif /* _ZEBRA_OSPF_ROUTE_H */
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