blob: a0fdf816a9a13ac163eb2e31937f2001cdfdeaff (
plain)
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
|
/*
* BIRD -- OSPF
*
* (c) 1999 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_OSPF_H_
#define _BIRD_OSPF_H_
#define OSPF_PROTO 89
#ifndef IPV6
#define OSPF_VERSION 2
#define AllSPFRouters ipa_from_u32(0xe0000005) /* 224.0.0.5 */
#define AllDRouters ipa_from_u32(0xe0000006) /* 224.0.0.6 */
#else
#error Multicast address not defined in IPv6
#endif
struct proto_ospf {
struct proto proto;
list iface_list; /* Interfaces we really use */
};
struct ospf_config {
struct proto_config c;
u32 area; /* FIXME: Area ID !!! This is wrong !!!
* Should respect interface */
};
struct ospf_iface {
node n;
struct proto_ospf *proto;
struct iface *iface; /* Nest's iface */
sock *hello_sk; /* List of active sockets */
list neigh_list; /* List of neigbours */
u32 area; /* OSPF Area */
u16 cost; /* Cost of iface */
int rxmtint; /* number of seconds between LSA retransmissions */
int iftransdelay; /* The estimated number of seconds it takes to
transmit a Link State Update Packet over this
interface. LSAs contained in the update */
u8 priority; /* A router priority for DR election */
u16 helloint; /* number of seconds between hello sending */
u32 deadint; /* after "deadint" missing hellos is router dead */
u16 autype;
u8 aukey[8];
u8 options;
ip_addr drip; /* Designated router */
u32 drid;
ip_addr bdrip; /* Backup DR */
u32 bdrid;
int type; /* OSPF view of type */
#define OSPF_IT_BROADCAST 0
#define OSPF_IT_NBMA 1
#define OSPF_IT_PTP 2
int state; /* Interface state machine */
#define OSPF_IS_DOWN 0 /* Should never happen */
#define OSPF_IS_WAITING 1 /* Waiting for Wait timer */
#define OSPF_IS_PTP 2 /* PTP operational */
#define OSPF_IS_DROTHER 3 /* I'm on BCAST or NBMA and I'm not DR */
#define OSPF_IS_BACKUP 4 /* I'm BDR */
#define OSPF_IS_DR 5 /* I'm DR */
timer *wait_timer; /* WAIT timer */
timer *hello_timer; /* HELLOINT timer */
/* Default values for interface parameters */
#define COST_D 10
#define RXMTINT_D 5
#define IFTRANSDELAY_D 1
#define PRIORITY_D 1
#define HELLOINT_D 10
#define DEADINT_D 4
#define WAIT_DMH 2 /* Value of Wait timer - not found it in RFC - using 2*HELLO */
};
struct ospf_patt {
struct iface_patt i;
u16 cost;
byte mode;
};
struct ospf_packet {
u8 version;
u8 type;
#define HELLO 1 /* Hello */
#define DBDES 2 /* Database description */
#define LSREQ 3 /* Link state request */
#define LSUPD 4 /* Link state update */
#define LSACK 5 /* Link state acknowledgement */
u16 length;
u32 routerid;
u32 areaid;
u16 checksum;
u16 autype;
u8 authetication[8];
};
struct ospf_hello_packet {
struct ospf_packet ospf_packet;
ip_addr netmask;
u16 hello_int;
u8 options;
u8 priority;
u32 deadint;
u32 dr;
u32 bdr;
};
struct ospf_neighbor
{
struct ospf_iface *ifa;
int state;
#define NEIGHBOR_DOWN 0
#define NEIGHBOR_INIT 1
#define NEIGHBOR_2WAY 2
#define NEIGHBOR_ATTEMPT 3
#define NEIGHBOR_EXSTART 4
#define NEIGHBOR_EXCHANGE 5
#define NEIGHBOR_LOADING 6
#define NEIGHBOR_FULL 7
timer *inactim; /* Inactivity timer */
byte ms; /* Master/slave */
u32 dds; /* DD Sequence number being sentg */
u32 ddr; /* last Dat Des packet */
u32 rid; /* Router ID */
byte pri; /* Priority */
byte options; /* Options */
u32 dr; /* Neigbour's idea of DR */
u32 bdr; /* Neigbour's idea of BDR */
};
#endif /* _BIRD_OSPF_H_ */
|
