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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/*
* BIRD -- OSPF
*
* (c) 1999 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#define LOCAL_DEBUG
#include <string.h>
#include "nest/bird.h"
#include "nest/iface.h"
#include "nest/protocol.h"
#include "nest/route.h"
#include "conf/conf.h"
#include "lib/ip.h"
#include "lib/socket.h"
#include "lib/lists.h"
#include "ospf.h"
int
ospf_rx_hook(sock *sk, int size)
{
DBG(" OSPF: RX_Hook called on interface ");
DBG(sk->iface->name);
DBG(".\n");
return(1);
}
void
ospf_tx_hook(sock *sk)
{
DBG(" OSPF: TX_Hook called on interface ");
DBG(sk->iface->name);
DBG(".\n");
}
void
ospf_err_hook(sock *sk, int err)
{
DBG(" OSPF: Err_Hook called on interface ");
DBG(sk->iface->name);
DBG(".\n");
}
/* This will change ! */
sock *
ospf_open_socket(struct proto *p, struct ospf_iface *ifa)
{
sock *mcsk;
/* No NBMA networks now */
if(((struct iface *)ifa)->flags & IF_MULTICAST)
{
mcsk=sk_new(p->pool);
mcsk->type=SK_IP_MC;
mcsk->dport=OSPF_PROTO;
mcsk->saddr=AllSPFRouters;
mcsk->daddr=AllSPFRouters;
mcsk->ttl=1;
mcsk->rx_hook=ospf_rx_hook;
mcsk->tx_hook=ospf_tx_hook;
mcsk->err_hook=ospf_err_hook;
mcsk->iface=(struct iface *)ifa;
mcsk->rbsize=((struct iface *)ifa)->mtu;
if(sk_open(mcsk)!=0)
{
DBG(" OSPF: SK_OPEN: failed\n");
return(NULL);
}
DBG(" OSPF: SK_OPEN: open\n");
return(mcsk);
}
else return(NULL);
}
/*
* This will later decide, wheter use iface for OSPF or not
* depending on config
*/
int
is_good_iface(struct proto *p, struct iface *iface)
{
if(iface->flags & IF_UP)
{
if(!(iface->flags & IF_IGNORE)) return 1;
}
return 0;
}
/* Of course, it's NOT true now */
int
ospf_iface_clasify(struct iface *ifa)
{
if((ifa->flags & (IF_MULTIACCESS|IF_MULTICAST))==
IF_MULTIACCESS|IF_MULTICAST) return OSPF_IM_BROADCAST;
if((ifa->flags & (IF_MULTIACCESS|IF_MULTICAST))==
IF_MULTIACCESS) return OSPF_IM_NBMA;
return OSPF_IM_PTP;
}
void
ospf_iface_default(struct ospf_iface *ifa)
{
int i;
ifa->area=0;
ifa->cost=COST_D;
ifa->rxmtint=RXMTINT_D;
ifa->iftransdelay=IFTRANSDELAY_D;
ifa->priority=PRIORITY_D;
ifa->helloint=HELLOINT_D;
ifa->deadint=DEADINT_D;
ifa->autype=0;
for(i=0;i<8;i++) ifa->aukey[i]=0;
ifa->options=0;
ifa->drip=ipa_from_u32(0x00000000);
ifa->drid=0;
ifa->bdrip=ipa_from_u32(0x00000000);
ifa->bdrid=0;
ifa->type=ospf_iface_clasify((struct iface *)ifa);
}
void
ospf_if_notify(struct proto *p, unsigned flags, struct iface *new, struct iface *old)
{
struct ospf_iface *ifa;
sock *mcsk;
struct ospf_config *c;
c=(struct ospf_config *)(p->cf);
DBG(" OSPF: If notify called\n");
if(((flags & IF_CHANGE_UP)==IF_CHANGE_UP) && is_good_iface(p, new))
{
debug(" OSPF: using interface %s.\n", new->name);
/* Latter I'll use config - this is incorrect */
ifa=mb_alloc(p->pool, sizeof(struct ospf_iface));
bcopy(new, ifa, sizeof(struct ospf_iface));
add_tail(&c->iface_list, NODE ifa);
ospf_iface_default(ifa);
init_list(&(ifa->sk_list));
if((mcsk=ospf_open_socket(p, ifa))!=NULL)
{
add_tail(&(ifa->sk_list),NODE mcsk);
}
}
}
static int
ospf_start(struct proto *p)
{
DBG(" OSPF: Start\n");
p->if_notify=ospf_if_notify;
return PS_UP;
}
static void
ospf_dump(struct proto *p)
{
char areastr[20];
struct ospf_config *c = (void *) p->cf;
DBG(" OSPF: Dump.\n");
debug(" -AreaID: %d\n", c->area );
}
static struct proto *
ospf_init(struct proto_config *c)
{
struct proto *p = proto_new(c, sizeof(struct proto));
DBG(" OSPF: Init.\n");
init_list(&((struct ospf_config *)c)->iface_list);
p->neigh_notify = NULL;
p->if_notify = NULL;
return p;
}
static void
ospf_preconfig(struct protocol *p, struct config *c)
{
DBG( " OSPF: preconfig\n" );
}
static void
ospf_postconfig(struct proto_config *c)
{
DBG( " OSPF: postconfig\n" );
}
struct protocol proto_ospf = {
name: "OSPF",
init: ospf_init,
dump: ospf_dump,
start: ospf_start,
preconfig: ospf_preconfig,
postconfig: ospf_postconfig,
};
|
