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
|
/*
* BIRD -- OSPF
*
* (c) 1999 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include "ospf.h"
static int
ospf_start(struct proto *p)
{
struct proto_ospf *po=(struct proto_ospf *)p;
DBG("%s: Start\n",p->name);
p->if_notify=ospf_if_notify;
p->rte_better=ospf_rte_better;
p->rte_same=ospf_rte_same;
fib_init(&po->efib,p->pool,sizeof(struct extfib),16,init_efib);
return PS_UP;
}
static void
ospf_dump(struct proto *p)
{
char areastr[20];
struct ospf_iface *ifa;
struct ospf_neighbor *n;
struct ospf_config *c = (void *) p->cf;
struct proto_ospf *po=(struct proto_ospf *)p;
struct ospf_area *oa;
debug("%s: Area number: %d\n", p->name, po->areano);
WALK_LIST(ifa, po->iface_list)
{
debug("%s: Interface: %s\n", p->name, ifa->iface->name);
debug("%s: state: %u\n", p->name, ifa->state);
debug("%s: DR: %I\n", p->name, ifa->drid);
debug("%s: BDR: %I\n", p->name, ifa->bdrid);
WALK_LIST(n, ifa->neigh_list)
{
debug("%s: neighbor %I in state %u\n", p->name, n->rid, n->state);
}
}
WALK_LIST(NODE oa,po->area_list)
{
debug("\n%s: LSA graph dump for area \"%I\" start:\n", p->name,oa->areaid);
ospf_top_dump(oa->gr);
debug("%s: LSA graph dump for area \"%I\" finished\n\n", p->name,
oa->areaid);
}
neigh_dump_all();
}
static struct proto *
ospf_init(struct proto_config *c)
{
struct proto *p = proto_new(c, sizeof(struct proto_ospf));
struct proto_ospf *po=(struct proto_ospf *)p;
DBG(" OSPF: Init.\n");
p->neigh_notify = NULL;
p->if_notify = NULL;
init_list(&(po->iface_list));
init_list(&(po->area_list));
return p;
}
/* If new is better return 1 */
static int
ospf_rte_better(struct rte *new, struct rte *old)
{
struct proto *p = new->attrs->proto;
if(new->u.ospf.metric1=LSINFINITY) return 0;
if(((new->attrs->source==RTS_OSPF) || (new->attrs->source==RTS_OSPF_IA))
&& (old->attrs->source==RTS_OSPF_EXT)) return 1;
if(((old->attrs->source==RTS_OSPF) || (old->attrs->source==RTS_OSPF_IA))
&& (new->attrs->source==RTS_OSPF_EXT)) return 0;
if(new->u.ospf.metric2!=0)
{
if(old->u.ospf.metric2==0) return 0;
if(new->u.ospf.metric2<old->u.ospf.metric2) return 1;
return 0;
}
else
{
if(old->u.ospf.metric2!=0) return 1;
if(new->u.ospf.metric1<old->u.ospf.metric1) return 1;
return 0;
}
}
static int
ospf_rte_same(struct rte *new, struct rte *old)
{
struct proto *p = new->attrs->proto;
if(new->attrs->source!=old->attrs->source) return 0;
if(new->u.ospf.metric1!=old->u.ospf.metric1) return 0;
if(new->u.ospf.metric2!=old->u.ospf.metric2) return 0;
return 1;
}
static void
ospf_postconfig(struct proto_config *c)
{
DBG( " OSPF: postconfig\n" );
}
struct protocol proto_ospf = {
name: "OSPF",
template: "ospf%d",
init: ospf_init,
dump: ospf_dump,
start: ospf_start,
postconfig: ospf_postconfig,
};
|
