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
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
|
/*
* Routing Information Base header
* Copyright (C) 1997 Kunihiro Ishiguro
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _ZEBRA_RIB_H
#define _ZEBRA_RIB_H
#define DISTANCE_INFINITY 255
/* Routing information base. */
struct rib
{
/* Link list. */
struct rib *next;
struct rib *prev;
/* Type fo this route. */
int type;
/* Which routing table */
int table;
/* Distance. */
u_char distance;
/* Flags of this route. This flag's definition is in lib/zebra.h
ZEBRA_FLAG_* */
u_char flags;
/* Metric */
u_int32_t metric;
/* Uptime. */
time_t uptime;
/* Refrence count. */
unsigned long refcnt;
/* Nexthop information. */
u_char nexthop_num;
u_char nexthop_active_num;
u_char nexthop_fib_num;
struct nexthop *nexthop;
};
/* Static route information. */
struct static_ipv4
{
/* For linked list. */
struct static_ipv4 *prev;
struct static_ipv4 *next;
/* Administrative distance. */
u_char distance;
/* Flag for this static route's type. */
u_char type;
#define STATIC_IPV4_GATEWAY 1
#define STATIC_IPV4_IFNAME 2
/* Nexthop value. */
union
{
struct in_addr ipv4;
char *ifname;
} gate;
/* bit flags */
u_char flags;
/*
see ZEBRA_FLAG_REJECT
ZEBRA_FLAG_BLACKHOLE
*/
};
#ifdef HAVE_IPV6
/* Static route information. */
struct static_ipv6
{
/* For linked list. */
struct static_ipv6 *prev;
struct static_ipv6 *next;
/* Administrative distance. */
u_char distance;
/* Flag for this static route's type. */
u_char type;
#define STATIC_IPV6_GATEWAY 1
#define STATIC_IPV6_GATEWAY_IFNAME 2
#define STATIC_IPV6_IFNAME 3
/* Nexthop value. */
struct in6_addr ipv6;
char *ifname;
/* bit flags */
u_char flags;
/*
see ZEBRA_FLAG_REJECT
ZEBRA_FLAG_BLACKHOLE
*/
};
#endif /* HAVE_IPV6 */
/* Nexthop structure. */
struct nexthop
{
struct nexthop *next;
struct nexthop *prev;
u_char type;
#define NEXTHOP_TYPE_IFINDEX 1 /* Directly connected. */
#define NEXTHOP_TYPE_IFNAME 2 /* Interface route. */
#define NEXTHOP_TYPE_IPV4 3 /* IPv4 nexthop. */
#define NEXTHOP_TYPE_IPV4_IFINDEX 4 /* IPv4 nexthop with ifindex. */
#define NEXTHOP_TYPE_IPV4_IFNAME 5 /* IPv4 nexthop with ifname. */
#define NEXTHOP_TYPE_IPV6 6 /* IPv6 nexthop. */
#define NEXTHOP_TYPE_IPV6_IFINDEX 7 /* IPv6 nexthop with ifindex. */
#define NEXTHOP_TYPE_IPV6_IFNAME 8 /* IPv6 nexthop with ifname. */
u_char flags;
#define NEXTHOP_FLAG_ACTIVE (1 << 0) /* This nexthop is alive. */
#define NEXTHOP_FLAG_FIB (1 << 1) /* FIB nexthop. */
#define NEXTHOP_FLAG_RECURSIVE (1 << 2) /* Recursive nexthop. */
/* Interface index. */
unsigned int ifindex;
char *ifname;
/* Nexthop address or interface name. */
union
{
struct in_addr ipv4;
#ifdef HAVE_IPV6
struct in6_addr ipv6;
#endif /* HAVE_IPV6*/
} gate;
/* Recursive lookup nexthop. */
u_char rtype;
unsigned int rifindex;
union
{
struct in_addr ipv4;
#ifdef HAVE_IPV6
struct in6_addr ipv6;
#endif /* HAVE_IPV6 */
} rgate;
struct nexthop *indirect;
};
/* Routing table instance. */
struct vrf
{
/* Identifier. This is same as routing table vector index. */
u_int32_t id;
/* Routing table name. */
char *name;
/* Description. */
char *desc;
/* FIB identifier. */
u_char fib_id;
/* Routing table. */
struct route_table *table[AFI_MAX][SAFI_MAX];
/* Static route configuration. */
struct route_table *stable[AFI_MAX][SAFI_MAX];
};
struct nexthop *nexthop_ifindex_add (struct rib *, unsigned int);
struct nexthop *nexthop_ifname_add (struct rib *, char *);
struct nexthop *nexthop_ipv4_add (struct rib *, struct in_addr *);
#ifdef HAVE_IPV6
struct nexthop *nexthop_ipv6_add (struct rib *, struct in6_addr *);
#endif /* HAVE_IPV6 */
struct vrf *vrf_lookup (u_int32_t);
struct route_table *vrf_table (afi_t afi, safi_t safi, u_int32_t id);
struct route_table *vrf_static_table (afi_t afi, safi_t safi, u_int32_t id);
int
rib_add_ipv4 (int type, int flags, struct prefix_ipv4 *p,
struct in_addr *gate, unsigned int ifindex, u_int32_t vrf_id,
u_int32_t, u_char);
int
rib_add_ipv4_multipath (struct prefix_ipv4 *, struct rib *);
int
rib_delete_ipv4 (int type, int flags, struct prefix_ipv4 *p,
struct in_addr *gate, unsigned int ifindex, u_int32_t);
struct rib *
rib_match_ipv4 (struct in_addr);
struct rib *
rib_lookup_ipv4 (struct prefix_ipv4 *);
void rib_update ();
void rib_sweep_route ();
void rib_close ();
void rib_init ();
int
static_add_ipv4 (struct prefix *p, struct in_addr *gate, char *ifname,
u_char flags, u_char distance, u_int32_t vrf_id);
int
static_delete_ipv4 (struct prefix *p, struct in_addr *gate, char *ifname,
u_char distance, u_int32_t vrf_id);
#ifdef HAVE_IPV6
int
rib_add_ipv6 (int type, int flags, struct prefix_ipv6 *p,
struct in6_addr *gate, unsigned int ifindex, u_int32_t vrf_id);
int
rib_delete_ipv6 (int type, int flags, struct prefix_ipv6 *p,
struct in6_addr *gate, unsigned int ifindex, u_int32_t vrf_id);
struct rib *rib_lookup_ipv6 (struct in6_addr *);
struct rib *rib_match_ipv6 (struct in6_addr *);
extern struct route_table *rib_table_ipv6;
int
static_add_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate,
char *ifname, u_char flags, u_char distance, u_int32_t vrf_id);
int
static_delete_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate,
char *ifname, u_char distance, u_int32_t vrf_id);
#endif /* HAVE_IPV6 */
#endif /*_ZEBRA_RIB_H */
|
