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718e3744 1/*
2 * RIPng related value and structure.
3 * Copyright (C) 1998 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 *
896014f4
DL
17 * You should have received a copy of the GNU General Public License along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
718e3744 20 */
21
22#ifndef _ZEBRA_RIPNG_RIPNGD_H
23#define _ZEBRA_RIPNG_RIPNGD_H
24
6ac29a51
PJ
25#include <zclient.h>
26#include <vty.h>
27
4a1ab8e4
DL
28#include "ripng_memory.h"
29
718e3744 30/* RIPng version and port number. */
31#define RIPNG_V1 1
32#define RIPNG_PORT_DEFAULT 521
33#define RIPNG_VTY_PORT 2603
718e3744 34#define RIPNG_MAX_PACKET_SIZE 1500
35#define RIPNG_PRIORITY_DEFAULT 0
36
37/* RIPng commands. */
38#define RIPNG_REQUEST 1
39#define RIPNG_RESPONSE 2
40
41/* RIPng metric and multicast group address. */
42#define RIPNG_METRIC_INFINITY 16
43#define RIPNG_METRIC_NEXTHOP 0xff
44#define RIPNG_GROUP "ff02::9"
45
46/* RIPng timers. */
47#define RIPNG_UPDATE_TIMER_DEFAULT 30
48#define RIPNG_TIMEOUT_TIMER_DEFAULT 180
49#define RIPNG_GARBAGE_TIMER_DEFAULT 120
50
a94434b6 51/* RIPng peer timeout value. */
52#define RIPNG_PEER_TIMER_DEFAULT 180
53
718e3744 54/* Default config file name. */
55#define RIPNG_DEFAULT_CONFIG "ripngd.conf"
56
57/* RIPng route types. */
58#define RIPNG_ROUTE_RTE 0
59#define RIPNG_ROUTE_STATIC 1
a94434b6 60#define RIPNG_ROUTE_DEFAULT 2
61#define RIPNG_ROUTE_REDISTRIBUTE 3
62#define RIPNG_ROUTE_INTERFACE 4
63#define RIPNG_ROUTE_AGGREGATE 5
718e3744 64
65/* Interface send/receive configuration. */
66#define RIPNG_SEND_UNSPEC 0
67#define RIPNG_SEND_OFF 1
68#define RIPNG_RECEIVE_UNSPEC 0
69#define RIPNG_RECEIVE_OFF 1
70
718e3744 71/* RIP default route's accept/announce methods. */
72#define RIPNG_DEFAULT_ADVERTISE_UNSPEC 0
73#define RIPNG_DEFAULT_ADVERTISE_NONE 1
74#define RIPNG_DEFAULT_ADVERTISE 2
75
76#define RIPNG_DEFAULT_ACCEPT_UNSPEC 0
77#define RIPNG_DEFAULT_ACCEPT_NONE 1
78#define RIPNG_DEFAULT_ACCEPT 2
79
80/* Default value for "default-metric" command. */
81#define RIPNG_DEFAULT_METRIC_DEFAULT 1
82
83/* For max RTE calculation. */
84#ifndef IPV6_HDRLEN
85#define IPV6_HDRLEN 40
86#endif /* IPV6_HDRLEN */
87
88#ifndef IFMINMTU
89#define IFMINMTU 576
90#endif /* IFMINMTU */
91
92/* RIPng structure. */
d62a17ae 93struct ripng {
94 /* RIPng socket. */
95 int sock;
96
97 /* RIPng Parameters.*/
d7c0a89a
QY
98 uint8_t command;
99 uint8_t version;
d62a17ae 100 unsigned long update_time;
101 unsigned long timeout_time;
102 unsigned long garbage_time;
103 int max_mtu;
104 int default_metric;
105 int default_information;
106
107 /* Input/output buffer of RIPng. */
108 struct stream *ibuf;
109 struct stream *obuf;
110
111 /* RIPng routing information base. */
fe08ba7e 112 struct agg_table *table;
d62a17ae 113
114 /* RIPng only static route information. */
fe08ba7e 115 struct agg_table *route;
d62a17ae 116
117 /* RIPng aggregate route information. */
fe08ba7e 118 struct agg_table *aggregate;
d62a17ae 119
120 /* RIPng threads. */
121 struct thread *t_read;
122 struct thread *t_write;
123 struct thread *t_update;
124 struct thread *t_garbage;
125 struct thread *t_zebra;
126
127 /* Triggered update hack. */
128 int trigger;
129 struct thread *t_triggered_update;
130 struct thread *t_triggered_interval;
131
132 /* RIPng ECMP flag */
133 unsigned int ecmp;
134
135 /* For redistribute route map. */
136 struct {
137 char *name;
138 struct route_map *map;
139 int metric_config;
d7c0a89a 140 uint32_t metric;
d62a17ae 141 } route_map[ZEBRA_ROUTE_MAX];
718e3744 142};
143
144/* Routing table entry. */
d62a17ae 145struct rte {
146 struct in6_addr addr; /* RIPng destination prefix */
d7c0a89a
QY
147 uint16_t tag; /* RIPng tag */
148 uint8_t prefixlen; /* Length of the RIPng prefix */
149 uint8_t metric; /* Metric of the RIPng route */
d62a17ae 150 /* The nexthop is stored by the structure
151 * ripng_nexthop within ripngd.c */
718e3744 152};
153
154/* RIPNG send packet. */
d62a17ae 155struct ripng_packet {
d7c0a89a
QY
156 uint8_t command;
157 uint8_t version;
158 uint16_t zero;
d62a17ae 159 struct rte rte[1];
718e3744 160};
161
162/* Each route's information. */
d62a17ae 163struct ripng_info {
164 /* This route's type. Static, ripng or aggregate. */
d7c0a89a 165 uint8_t type;
718e3744 166
d62a17ae 167 /* Sub type for static route. */
d7c0a89a 168 uint8_t sub_type;
718e3744 169
d62a17ae 170 /* RIPng specific information */
171 struct in6_addr nexthop;
172 struct in6_addr from;
718e3744 173
d62a17ae 174 /* Which interface does this route come from. */
175 ifindex_t ifindex;
718e3744 176
d62a17ae 177 /* Metric of this route. */
d7c0a89a 178 uint8_t metric;
718e3744 179
d62a17ae 180 /* Tag field of RIPng packet.*/
d7c0a89a 181 uint16_t tag;
718e3744 182
d62a17ae 183 /* For aggregation. */
184 unsigned int suppress;
718e3744 185
d62a17ae 186/* Flags of RIPng route. */
718e3744 187#define RIPNG_RTF_FIB 1
188#define RIPNG_RTF_CHANGED 2
d7c0a89a 189 uint8_t flags;
718e3744 190
d62a17ae 191 /* Garbage collect timer. */
192 struct thread *t_timeout;
193 struct thread *t_garbage_collect;
718e3744 194
d62a17ae 195 /* Route-map features - this variables can be changed. */
196 struct in6_addr nexthop_out;
d7c0a89a
QY
197 uint8_t metric_set;
198 uint8_t metric_out;
199 uint16_t tag_out;
718e3744 200
fe08ba7e 201 struct agg_node *rp;
718e3744 202};
203
a94434b6 204#ifdef notyet
205#if 0
718e3744 206/* RIPng tag structure. */
207struct ripng_tag
208{
209 /* Tag value. */
d7c0a89a 210 uint16_t tag;
718e3744 211
212 /* Port. */
d7c0a89a 213 uint16_t port;
718e3744 214
215 /* Multicast group. */
216 struct in6_addr maddr;
217
218 /* Table number. */
219 int table;
220
221 /* Distance. */
222 int distance;
223
224 /* Split horizon. */
d7c0a89a 225 uint8_t split_horizon;
718e3744 226
227 /* Poison reverse. */
d7c0a89a 228 uint8_t poison_reverse;
718e3744 229};
a94434b6 230#endif /* 0 */
231#endif /* not yet */
232
233typedef enum {
d62a17ae 234 RIPNG_NO_SPLIT_HORIZON = 0,
235 RIPNG_SPLIT_HORIZON,
236 RIPNG_SPLIT_HORIZON_POISONED_REVERSE
a94434b6 237} split_horizon_policy_t;
718e3744 238
239/* RIPng specific interface configuration. */
d62a17ae 240struct ripng_interface {
241 /* RIPng is enabled on this interface. */
242 int enable_network;
243 int enable_interface;
244
245 /* RIPng is running on this interface. */
246 int running;
247
248 /* Split horizon flag. */
249 split_horizon_policy_t split_horizon;
250 split_horizon_policy_t split_horizon_default;
251
252/* For filter type slot. */
718e3744 253#define RIPNG_FILTER_IN 0
254#define RIPNG_FILTER_OUT 1
255#define RIPNG_FILTER_MAX 2
256
d62a17ae 257 /* Access-list. */
258 struct access_list *list[RIPNG_FILTER_MAX];
718e3744 259
d62a17ae 260 /* Prefix-list. */
261 struct prefix_list *prefix[RIPNG_FILTER_MAX];
718e3744 262
d62a17ae 263 /* Route-map. */
264 struct route_map *routemap[RIPNG_FILTER_MAX];
718e3744 265
a94434b6 266#ifdef notyet
267#if 0
718e3744 268 /* RIPng tag configuration. */
269 struct ripng_tag *rtag;
a94434b6 270#endif /* 0 */
271#endif /* notyet */
718e3744 272
d62a17ae 273 /* Default information originate. */
d7c0a89a 274 uint8_t default_originate;
718e3744 275
d62a17ae 276 /* Default information only. */
d7c0a89a 277 uint8_t default_only;
718e3744 278
d62a17ae 279 /* Wake up thread. */
280 struct thread *t_wakeup;
718e3744 281
d62a17ae 282 /* Passive interface. */
283 int passive;
718e3744 284};
285
a94434b6 286/* RIPng peer information. */
d62a17ae 287struct ripng_peer {
288 /* Peer address. */
289 struct in6_addr addr;
a94434b6 290
d62a17ae 291 /* Peer RIPng tag value. */
292 int domain;
a94434b6 293
d62a17ae 294 /* Last update time. */
295 time_t uptime;
a94434b6 296
d62a17ae 297 /* Peer RIP version. */
d7c0a89a 298 uint8_t version;
a94434b6 299
d62a17ae 300 /* Statistics. */
301 int recv_badpackets;
302 int recv_badroutes;
a94434b6 303
d62a17ae 304 /* Timeout thread. */
305 struct thread *t_timeout;
a94434b6 306};
307
718e3744 308/* All RIPng events. */
d62a17ae 309enum ripng_event {
310 RIPNG_READ,
311 RIPNG_ZEBRA,
312 RIPNG_REQUEST_EVENT,
313 RIPNG_UPDATE_EVENT,
314 RIPNG_TRIGGERED_UPDATE,
718e3744 315};
316
317/* RIPng timer on/off macro. */
ffa2c898 318#define RIPNG_TIMER_ON(T,F,V) thread_add_timer (master, (F), rinfo, (V), &(T))
718e3744 319
d62a17ae 320#define RIPNG_TIMER_OFF(T) \
321 do { \
322 if (T) { \
323 thread_cancel(T); \
324 (T) = NULL; \
325 } \
326 } while (0)
718e3744 327
718e3744 328/* Extern variables. */
329extern struct ripng *ripng;
5cb6ce9c 330extern struct zebra_privs_t ripngd_privs;
718e3744 331extern struct thread_master *master;
332
333/* Prototypes. */
d62a17ae 334extern void ripng_init(void);
335extern void ripng_reset(void);
336extern void ripng_clean(void);
337extern void ripng_clean_network(void);
338extern void ripng_interface_clean(void);
339extern void ripng_interface_reset(void);
340extern void ripng_passive_interface_clean(void);
341extern void ripng_if_init(void);
342extern void ripng_route_map_init(void);
343extern void ripng_route_map_reset(void);
344extern void ripng_terminate(void);
345/* zclient_init() is done by ripng_zebra.c:zebra_init() */
4140ca4d 346extern void zebra_init(struct thread_master *);
d62a17ae 347extern void ripng_zebra_stop(void);
348extern void ripng_zclient_reset(void);
349extern void ripng_offset_init(void);
350
351extern int config_write_ripng_offset_list(struct vty *);
352
353extern void ripng_peer_init(void);
d7c0a89a 354extern void ripng_peer_update(struct sockaddr_in6 *, uint8_t);
d62a17ae 355extern void ripng_peer_bad_route(struct sockaddr_in6 *);
356extern void ripng_peer_bad_packet(struct sockaddr_in6 *);
357extern void ripng_peer_display(struct vty *);
358extern struct ripng_peer *ripng_peer_lookup(struct in6_addr *);
359extern struct ripng_peer *ripng_peer_lookup_next(struct in6_addr *);
360
361extern int ripng_offset_list_apply_in(struct prefix_ipv6 *, struct interface *,
d7c0a89a 362 uint8_t *);
d62a17ae 363extern int ripng_offset_list_apply_out(struct prefix_ipv6 *, struct interface *,
d7c0a89a 364 uint8_t *);
d62a17ae 365extern void ripng_offset_clean(void);
366
367extern struct ripng_info *ripng_info_new(void);
368extern void ripng_info_free(struct ripng_info *rinfo);
369extern void ripng_event(enum ripng_event, int);
370extern int ripng_request(struct interface *ifp);
371extern void ripng_redistribute_add(int, int, struct prefix_ipv6 *, ifindex_t,
372 struct in6_addr *, route_tag_t);
373extern void ripng_redistribute_delete(int, int, struct prefix_ipv6 *,
374 ifindex_t);
375extern void ripng_redistribute_withdraw(int type);
376
377extern void ripng_distribute_update_interface(struct interface *);
378extern void ripng_if_rmap_update_interface(struct interface *);
379
fe08ba7e
DS
380extern void ripng_zebra_ipv6_add(struct agg_node *node);
381extern void ripng_zebra_ipv6_delete(struct agg_node *node);
d62a17ae 382
383extern void ripng_redistribute_clean(void);
384extern int ripng_redistribute_check(int);
385extern void ripng_redistribute_write(struct vty *, int);
386
387extern int ripng_write_rte(int num, struct stream *s, struct prefix_ipv6 *p,
d7c0a89a
QY
388 struct in6_addr *nexthop, uint16_t tag,
389 uint8_t metric);
d62a17ae 390extern int ripng_send_packet(caddr_t buf, int bufsize, struct sockaddr_in6 *to,
391 struct interface *ifp);
392
393extern void ripng_packet_dump(struct ripng_packet *packet, int size,
394 const char *sndrcv);
395
396extern int ripng_interface_up(int command, struct zclient *, zebra_size_t,
397 vrf_id_t);
398extern int ripng_interface_down(int command, struct zclient *, zebra_size_t,
399 vrf_id_t);
400extern int ripng_interface_add(int command, struct zclient *, zebra_size_t,
401 vrf_id_t);
402extern int ripng_interface_delete(int command, struct zclient *, zebra_size_t,
403 vrf_id_t);
404extern int ripng_interface_address_add(int command, struct zclient *,
405 zebra_size_t, vrf_id_t);
406extern int ripng_interface_address_delete(int command, struct zclient *,
407 zebra_size_t, vrf_id_t);
408
409extern int ripng_network_write(struct vty *, int);
410
411extern struct ripng_info *ripng_ecmp_add(struct ripng_info *);
412extern struct ripng_info *ripng_ecmp_replace(struct ripng_info *);
413extern struct ripng_info *ripng_ecmp_delete(struct ripng_info *);
c880b636 414
718e3744 415#endif /* _ZEBRA_RIPNG_RIPNGD_H */