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718e3744 | 1 | /* |
2 | * Routing Information Base header | |
3 | * Copyright (C) 1997 Kunihiro Ishiguro | |
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_RIB_H | |
24 | #define _ZEBRA_RIB_H | |
25 | ||
ec1a4283 | 26 | #include "prefix.h" |
27 | ||
718e3744 | 28 | #define DISTANCE_INFINITY 255 |
29 | ||
30 | /* Routing information base. */ | |
7514fb77 PJ |
31 | |
32 | union g_addr { | |
33 | struct in_addr ipv4; | |
34 | #ifdef HAVE_IPV6 | |
35 | struct in6_addr ipv6; | |
36 | #endif /* HAVE_IPV6 */ | |
37 | }; | |
38 | ||
718e3744 | 39 | struct rib |
40 | { | |
6d691129 PJ |
41 | /* Status Flags for the *route_node*, but kept in the head RIB.. */ |
42 | u_char rn_status; | |
43 | #define RIB_ROUTE_QUEUED (1 << 0) | |
44 | ||
718e3744 | 45 | /* Link list. */ |
46 | struct rib *next; | |
47 | struct rib *prev; | |
e6d7d054 PJ |
48 | |
49 | /* Nexthop structure */ | |
50 | struct nexthop *nexthop; | |
51 | ||
52 | /* Refrence count. */ | |
53 | unsigned long refcnt; | |
54 | ||
55 | /* Uptime. */ | |
56 | time_t uptime; | |
718e3744 | 57 | |
58 | /* Type fo this route. */ | |
59 | int type; | |
60 | ||
61 | /* Which routing table */ | |
62 | int table; | |
63 | ||
e6d7d054 PJ |
64 | /* Metric */ |
65 | u_int32_t metric; | |
66 | ||
718e3744 | 67 | /* Distance. */ |
68 | u_char distance; | |
69 | ||
6d691129 PJ |
70 | /* Flags of this route. |
71 | * This flag's definition is in lib/zebra.h ZEBRA_FLAG_* and is exposed | |
72 | * to clients via Zserv | |
73 | */ | |
718e3744 | 74 | u_char flags; |
75 | ||
6d691129 PJ |
76 | /* RIB internal status */ |
77 | u_char status; | |
78 | #define RIB_ENTRY_REMOVED (1 << 0) | |
79 | ||
718e3744 | 80 | /* Nexthop information. */ |
81 | u_char nexthop_num; | |
82 | u_char nexthop_active_num; | |
83 | u_char nexthop_fib_num; | |
718e3744 | 84 | }; |
85 | ||
86 | /* Static route information. */ | |
87 | struct static_ipv4 | |
88 | { | |
89 | /* For linked list. */ | |
90 | struct static_ipv4 *prev; | |
91 | struct static_ipv4 *next; | |
92 | ||
93 | /* Administrative distance. */ | |
94 | u_char distance; | |
95 | ||
96 | /* Flag for this static route's type. */ | |
97 | u_char type; | |
98 | #define STATIC_IPV4_GATEWAY 1 | |
99 | #define STATIC_IPV4_IFNAME 2 | |
595db7f1 | 100 | #define STATIC_IPV4_BLACKHOLE 3 |
718e3744 | 101 | |
102 | /* Nexthop value. */ | |
103 | union | |
104 | { | |
105 | struct in_addr ipv4; | |
106 | char *ifname; | |
107 | } gate; | |
81dfcaa2 | 108 | |
109 | /* bit flags */ | |
110 | u_char flags; | |
111 | /* | |
112 | see ZEBRA_FLAG_REJECT | |
113 | ZEBRA_FLAG_BLACKHOLE | |
114 | */ | |
718e3744 | 115 | }; |
116 | ||
117 | #ifdef HAVE_IPV6 | |
118 | /* Static route information. */ | |
119 | struct static_ipv6 | |
120 | { | |
121 | /* For linked list. */ | |
122 | struct static_ipv6 *prev; | |
123 | struct static_ipv6 *next; | |
124 | ||
125 | /* Administrative distance. */ | |
126 | u_char distance; | |
127 | ||
128 | /* Flag for this static route's type. */ | |
129 | u_char type; | |
130 | #define STATIC_IPV6_GATEWAY 1 | |
131 | #define STATIC_IPV6_GATEWAY_IFNAME 2 | |
132 | #define STATIC_IPV6_IFNAME 3 | |
133 | ||
134 | /* Nexthop value. */ | |
135 | struct in6_addr ipv6; | |
136 | char *ifname; | |
81dfcaa2 | 137 | |
138 | /* bit flags */ | |
139 | u_char flags; | |
140 | /* | |
141 | see ZEBRA_FLAG_REJECT | |
142 | ZEBRA_FLAG_BLACKHOLE | |
143 | */ | |
718e3744 | 144 | }; |
145 | #endif /* HAVE_IPV6 */ | |
146 | ||
7021c425 | 147 | enum nexthop_types_t |
148 | { | |
149 | NEXTHOP_TYPE_IFINDEX = 1, /* Directly connected. */ | |
150 | NEXTHOP_TYPE_IFNAME, /* Interface route. */ | |
151 | NEXTHOP_TYPE_IPV4, /* IPv4 nexthop. */ | |
152 | NEXTHOP_TYPE_IPV4_IFINDEX, /* IPv4 nexthop with ifindex. */ | |
153 | NEXTHOP_TYPE_IPV4_IFNAME, /* IPv4 nexthop with ifname. */ | |
154 | NEXTHOP_TYPE_IPV6, /* IPv6 nexthop. */ | |
155 | NEXTHOP_TYPE_IPV6_IFINDEX, /* IPv6 nexthop with ifindex. */ | |
156 | NEXTHOP_TYPE_IPV6_IFNAME, /* IPv6 nexthop with ifname. */ | |
157 | NEXTHOP_TYPE_BLACKHOLE, /* Null0 nexthop. */ | |
158 | }; | |
159 | ||
718e3744 | 160 | /* Nexthop structure. */ |
161 | struct nexthop | |
162 | { | |
163 | struct nexthop *next; | |
164 | struct nexthop *prev; | |
165 | ||
e6d7d054 PJ |
166 | /* Interface index. */ |
167 | char *ifname; | |
168 | unsigned int ifindex; | |
169 | ||
7021c425 | 170 | enum nexthop_types_t type; |
718e3744 | 171 | |
172 | u_char flags; | |
173 | #define NEXTHOP_FLAG_ACTIVE (1 << 0) /* This nexthop is alive. */ | |
174 | #define NEXTHOP_FLAG_FIB (1 << 1) /* FIB nexthop. */ | |
175 | #define NEXTHOP_FLAG_RECURSIVE (1 << 2) /* Recursive nexthop. */ | |
176 | ||
718e3744 | 177 | /* Nexthop address or interface name. */ |
7514fb77 | 178 | union g_addr gate; |
718e3744 | 179 | |
180 | /* Recursive lookup nexthop. */ | |
181 | u_char rtype; | |
182 | unsigned int rifindex; | |
7514fb77 PJ |
183 | union g_addr rgate; |
184 | union g_addr src; | |
718e3744 | 185 | }; |
186 | ||
187 | /* Routing table instance. */ | |
188 | struct vrf | |
189 | { | |
190 | /* Identifier. This is same as routing table vector index. */ | |
191 | u_int32_t id; | |
192 | ||
193 | /* Routing table name. */ | |
194 | char *name; | |
195 | ||
196 | /* Description. */ | |
197 | char *desc; | |
198 | ||
199 | /* FIB identifier. */ | |
200 | u_char fib_id; | |
201 | ||
202 | /* Routing table. */ | |
203 | struct route_table *table[AFI_MAX][SAFI_MAX]; | |
204 | ||
205 | /* Static route configuration. */ | |
206 | struct route_table *stable[AFI_MAX][SAFI_MAX]; | |
207 | }; | |
208 | ||
a1ac18c4 | 209 | extern struct nexthop *nexthop_ifindex_add (struct rib *, unsigned int); |
210 | extern struct nexthop *nexthop_ifname_add (struct rib *, char *); | |
211 | extern struct nexthop *nexthop_blackhole_add (struct rib *); | |
7514fb77 PJ |
212 | extern struct nexthop *nexthop_ipv4_add (struct rib *, struct in_addr *, |
213 | struct in_addr *); | |
718e3744 | 214 | #ifdef HAVE_IPV6 |
a1ac18c4 | 215 | extern struct nexthop *nexthop_ipv6_add (struct rib *, struct in6_addr *); |
718e3744 | 216 | #endif /* HAVE_IPV6 */ |
217 | ||
a1ac18c4 | 218 | extern struct vrf *vrf_lookup (u_int32_t); |
219 | extern struct route_table *vrf_table (afi_t afi, safi_t safi, u_int32_t id); | |
220 | extern struct route_table *vrf_static_table (afi_t afi, safi_t safi, u_int32_t id); | |
718e3744 | 221 | |
d24af186 | 222 | /* NOTE: |
223 | * All rib_add_ipv[46]* functions will not just add prefix into RIB, but | |
224 | * also implicitly withdraw equal prefix of same type. */ | |
a1ac18c4 | 225 | extern int rib_add_ipv4 (int type, int flags, struct prefix_ipv4 *p, |
7514fb77 PJ |
226 | struct in_addr *gate, struct in_addr *src, |
227 | unsigned int ifindex, u_int32_t vrf_id, | |
228 | u_int32_t, u_char); | |
718e3744 | 229 | |
a1ac18c4 | 230 | extern int rib_add_ipv4_multipath (struct prefix_ipv4 *, struct rib *); |
718e3744 | 231 | |
a1ac18c4 | 232 | extern int rib_delete_ipv4 (int type, int flags, struct prefix_ipv4 *p, |
233 | struct in_addr *gate, unsigned int ifindex, | |
234 | u_int32_t); | |
718e3744 | 235 | |
a1ac18c4 | 236 | extern struct rib *rib_match_ipv4 (struct in_addr); |
718e3744 | 237 | |
a1ac18c4 | 238 | extern struct rib *rib_lookup_ipv4 (struct prefix_ipv4 *); |
718e3744 | 239 | |
a1ac18c4 | 240 | extern void rib_update (void); |
241 | extern void rib_weed_tables (void); | |
242 | extern void rib_sweep_route (void); | |
243 | extern void rib_close (void); | |
244 | extern void rib_init (void); | |
718e3744 | 245 | |
a1ac18c4 | 246 | extern int |
39db97e4 | 247 | static_add_ipv4 (struct prefix *p, struct in_addr *gate, const char *ifname, |
81dfcaa2 | 248 | u_char flags, u_char distance, u_int32_t vrf_id); |
718e3744 | 249 | |
a1ac18c4 | 250 | extern int |
39db97e4 | 251 | static_delete_ipv4 (struct prefix *p, struct in_addr *gate, const char *ifname, |
718e3744 | 252 | u_char distance, u_int32_t vrf_id); |
253 | ||
254 | #ifdef HAVE_IPV6 | |
a1ac18c4 | 255 | extern int |
718e3744 | 256 | rib_add_ipv6 (int type, int flags, struct prefix_ipv6 *p, |
be61c4eb | 257 | struct in6_addr *gate, unsigned int ifindex, u_int32_t vrf_id, |
258 | u_int32_t metric, u_char distance); | |
718e3744 | 259 | |
a1ac18c4 | 260 | extern int |
718e3744 | 261 | rib_delete_ipv6 (int type, int flags, struct prefix_ipv6 *p, |
262 | struct in6_addr *gate, unsigned int ifindex, u_int32_t vrf_id); | |
263 | ||
a1ac18c4 | 264 | extern struct rib *rib_lookup_ipv6 (struct in6_addr *); |
718e3744 | 265 | |
a1ac18c4 | 266 | extern struct rib *rib_match_ipv6 (struct in6_addr *); |
718e3744 | 267 | |
268 | extern struct route_table *rib_table_ipv6; | |
269 | ||
a1ac18c4 | 270 | extern int |
718e3744 | 271 | static_add_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate, |
39db97e4 | 272 | const char *ifname, u_char flags, u_char distance, |
273 | u_int32_t vrf_id); | |
718e3744 | 274 | |
a1ac18c4 | 275 | extern int |
718e3744 | 276 | static_delete_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate, |
39db97e4 | 277 | const char *ifname, u_char distance, u_int32_t vrf_id); |
718e3744 | 278 | |
279 | #endif /* HAVE_IPV6 */ | |
280 | ||
281 | #endif /*_ZEBRA_RIB_H */ |