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718e3744 | 1 | /* |
2 | * Zebra connect library for OSPFd | |
3 | * Copyright (C) 1997, 98, 99, 2000 Kunihiro Ishiguro, Toshiaki Takada | |
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 | |
19 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | * Boston, MA 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "thread.h" | |
26 | #include "command.h" | |
27 | #include "network.h" | |
28 | #include "prefix.h" | |
29 | #include "routemap.h" | |
30 | #include "table.h" | |
31 | #include "stream.h" | |
32 | #include "memory.h" | |
33 | #include "zclient.h" | |
34 | #include "filter.h" | |
35 | #include "log.h" | |
36 | ||
37 | #include "ospfd/ospfd.h" | |
38 | #include "ospfd/ospf_interface.h" | |
39 | #include "ospfd/ospf_ism.h" | |
40 | #include "ospfd/ospf_asbr.h" | |
41 | #include "ospfd/ospf_asbr.h" | |
42 | #include "ospfd/ospf_abr.h" | |
43 | #include "ospfd/ospf_lsa.h" | |
44 | #include "ospfd/ospf_dump.h" | |
45 | #include "ospfd/ospf_route.h" | |
46 | #include "ospfd/ospf_zebra.h" | |
47 | #ifdef HAVE_SNMP | |
48 | #include "ospfd/ospf_snmp.h" | |
49 | #endif /* HAVE_SNMP */ | |
50 | ||
51 | /* Zebra structure to hold current status. */ | |
52 | struct zclient *zclient = NULL; | |
53 | ||
54 | /* For registering threads. */ | |
55 | extern struct thread_master *master; | |
56 | ||
57 | /* Inteface addition message from zebra. */ | |
58 | int | |
59 | ospf_interface_add (int command, struct zclient *zclient, zebra_size_t length) | |
60 | { | |
61 | struct interface *ifp; | |
68980084 | 62 | struct ospf *ospf = ospf_top; |
718e3744 | 63 | |
64 | ifp = zebra_interface_add_read (zclient->ibuf); | |
65 | ||
66 | if (IS_DEBUG_OSPF (zebra, ZEBRA_INTERFACE)) | |
67 | zlog_info ("Zebra: interface add %s index %d flags %ld metric %d mtu %d", | |
68 | ifp->name, ifp->ifindex, ifp->flags, ifp->metric, ifp->mtu); | |
69 | ||
f2c80652 | 70 | assert(ifp->info); |
71 | ||
718e3744 | 72 | if (!OSPF_IF_PARAM_CONFIGURED (IF_DEF_PARAMS (ifp), type)) |
73 | { | |
74 | SET_IF_PARAM (IF_DEF_PARAMS (ifp), type); | |
75 | IF_DEF_PARAMS (ifp)->type = OSPF_IFTYPE_BROADCAST; | |
76 | ||
77 | if (if_is_broadcast (ifp)) | |
78 | IF_DEF_PARAMS (ifp)->type = OSPF_IFTYPE_BROADCAST; | |
79 | else if (if_is_pointopoint (ifp)) | |
80 | IF_DEF_PARAMS (ifp)->type = OSPF_IFTYPE_POINTOPOINT; | |
81 | else if (if_is_loopback (ifp)) | |
82 | IF_DEF_PARAMS (ifp)->type = OSPF_IFTYPE_LOOPBACK; | |
83 | } | |
84 | ||
68980084 | 85 | ospf_if_update (ospf); |
718e3744 | 86 | |
87 | #ifdef HAVE_SNMP | |
88 | ospf_snmp_if_update (ifp); | |
89 | #endif /* HAVE_SNMP */ | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | int | |
95 | ospf_interface_delete (int command, struct zclient *zclient, | |
96 | zebra_size_t length) | |
97 | { | |
98 | struct interface *ifp; | |
99 | struct stream *s; | |
100 | struct route_node *rn; | |
101 | ||
102 | s = zclient->ibuf; | |
103 | /* zebra_interface_state_read() updates interface structure in iflist */ | |
104 | ifp = zebra_interface_state_read (s); | |
105 | ||
106 | if (ifp == NULL) | |
107 | return 0; | |
108 | ||
109 | if (if_is_up (ifp)) | |
110 | zlog_warn ("Zebra: got delete of %s, but interface is still up", | |
111 | ifp->name); | |
112 | ||
113 | if (IS_DEBUG_OSPF (zebra, ZEBRA_INTERFACE)) | |
114 | zlog_info ("Zebra: interface delete %s index %d flags %ld metric %d mtu %d", | |
115 | ifp->name, ifp->ifindex, ifp->flags, ifp->metric, ifp->mtu); | |
116 | ||
117 | #ifdef HAVE_SNMP | |
118 | ospf_snmp_if_delete (ifp); | |
119 | #endif /* HAVE_SNMP */ | |
120 | ||
121 | for (rn = route_top (IF_OIFS (ifp)); rn; rn = route_next (rn)) | |
122 | if (rn->info) | |
123 | ospf_if_free ((struct ospf_interface *) rn->info); | |
124 | ||
125 | for (rn = route_top (IF_OIFS_PARAMS (ifp)); rn; rn = route_next (rn)) | |
126 | if (rn->info) | |
127 | ospf_del_if_params (rn->info); | |
128 | ||
129 | if_delete (ifp); | |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | struct interface * | |
135 | zebra_interface_if_lookup (struct stream *s) | |
136 | { | |
137 | struct interface *ifp; | |
138 | u_char ifname_tmp[INTERFACE_NAMSIZ]; | |
139 | ||
140 | /* Read interface name. */ | |
141 | stream_get (ifname_tmp, s, INTERFACE_NAMSIZ); | |
142 | ||
143 | /* Lookup this by interface index. */ | |
144 | ifp = if_lookup_by_name (ifname_tmp); | |
145 | ||
146 | /* If such interface does not exist, indicate an error */ | |
147 | if (!ifp) | |
148 | return NULL; | |
149 | ||
150 | return ifp; | |
151 | } | |
152 | ||
153 | void | |
154 | zebra_interface_if_set_value (struct stream *s, struct interface *ifp) | |
155 | { | |
156 | /* Read interface's index. */ | |
157 | ifp->ifindex = stream_getl (s); | |
158 | ||
159 | /* Read interface's value. */ | |
2e3b2e47 | 160 | ifp->status = stream_getc (s); |
718e3744 | 161 | ifp->flags = stream_getl (s); |
162 | ifp->metric = stream_getl (s); | |
163 | ifp->mtu = stream_getl (s); | |
164 | ifp->bandwidth = stream_getl (s); | |
165 | } | |
166 | ||
167 | int | |
168 | ospf_interface_state_up (int command, struct zclient *zclient, | |
169 | zebra_size_t length) | |
170 | { | |
171 | struct interface *ifp; | |
172 | struct interface if_tmp; | |
173 | struct ospf_interface *oi; | |
174 | struct route_node *rn; | |
175 | ||
176 | ifp = zebra_interface_if_lookup (zclient->ibuf); | |
177 | ||
178 | if (ifp == NULL) | |
179 | return 0; | |
180 | ||
181 | /* Interface is already up. */ | |
2e3b2e47 | 182 | if (if_is_operative (ifp)) |
718e3744 | 183 | { |
184 | /* Temporarily keep ifp values. */ | |
185 | memcpy (&if_tmp, ifp, sizeof (struct interface)); | |
186 | ||
187 | zebra_interface_if_set_value (zclient->ibuf, ifp); | |
188 | ||
189 | if (IS_DEBUG_OSPF (zebra, ZEBRA_INTERFACE)) | |
190 | zlog_info ("Zebra: Interface[%s] state update.", ifp->name); | |
191 | ||
192 | if (if_tmp.bandwidth != ifp->bandwidth) | |
193 | { | |
194 | if (IS_DEBUG_OSPF (zebra, ZEBRA_INTERFACE)) | |
195 | zlog_info ("Zebra: Interface[%s] bandwidth change %d -> %d.", | |
196 | ifp->name, if_tmp.bandwidth, ifp->bandwidth); | |
197 | ||
198 | ospf_if_recalculate_output_cost (ifp); | |
199 | } | |
200 | return 0; | |
201 | } | |
202 | ||
203 | zebra_interface_if_set_value (zclient->ibuf, ifp); | |
204 | ||
205 | if (IS_DEBUG_OSPF (zebra, ZEBRA_INTERFACE)) | |
206 | zlog_info ("Zebra: Interface[%s] state change to up.", ifp->name); | |
207 | ||
208 | for (rn = route_top (IF_OIFS (ifp));rn; rn = route_next (rn)) | |
209 | { | |
210 | if ( (oi = rn->info) == NULL) | |
211 | continue; | |
212 | ||
213 | ospf_if_up (oi); | |
214 | } | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
219 | int | |
220 | ospf_interface_state_down (int command, struct zclient *zclient, | |
221 | zebra_size_t length) | |
222 | { | |
223 | struct interface *ifp; | |
224 | struct ospf_interface *oi; | |
225 | struct route_node *node; | |
226 | ||
227 | ifp = zebra_interface_state_read (zclient->ibuf); | |
228 | ||
229 | if (ifp == NULL) | |
230 | return 0; | |
231 | ||
232 | if (IS_DEBUG_OSPF (zebra, ZEBRA_INTERFACE)) | |
233 | zlog_info ("Zebra: Interface[%s] state change to down.", ifp->name); | |
234 | ||
235 | for (node = route_top (IF_OIFS (ifp));node; node = route_next (node)) | |
236 | { | |
237 | if ( (oi = node->info) == NULL) | |
238 | continue; | |
239 | ospf_if_down (oi); | |
240 | } | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | int | |
246 | ospf_interface_address_add (int command, struct zclient *zclient, | |
247 | zebra_size_t length) | |
248 | { | |
68980084 | 249 | struct ospf *ospf = ospf_top; |
718e3744 | 250 | struct connected *c; |
251 | ||
252 | c = zebra_interface_address_add_read (zclient->ibuf); | |
253 | ||
254 | if (c == NULL) | |
255 | return 0; | |
256 | ||
68980084 | 257 | ospf_if_update (ospf); |
718e3744 | 258 | |
259 | #ifdef HAVE_SNMP | |
260 | ospf_snmp_if_update (c->ifp); | |
261 | #endif /* HAVE_SNMP */ | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | int | |
267 | ospf_interface_address_delete (int command, struct zclient *zclient, | |
268 | zebra_size_t length) | |
269 | { | |
68980084 | 270 | struct ospf *ospf = ospf_top; |
718e3744 | 271 | struct connected *c; |
272 | struct interface *ifp; | |
273 | struct ospf_interface *oi; | |
274 | struct route_node *rn; | |
275 | struct prefix p; | |
276 | ||
277 | c = zebra_interface_address_delete_read (zclient->ibuf); | |
278 | ||
279 | if (c == NULL) | |
280 | return 0; | |
281 | ||
282 | ifp = c->ifp; | |
283 | p = *c->address; | |
284 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
285 | ||
286 | rn = route_node_lookup (IF_OIFS (ifp), &p); | |
287 | if (! rn) | |
288 | return 0; | |
289 | ||
290 | assert (rn->info); | |
291 | oi = rn->info; | |
292 | ||
293 | /* Call interface hook functions to clean up */ | |
294 | ospf_if_free (oi); | |
295 | ||
296 | #ifdef HAVE_SNMP | |
297 | ospf_snmp_if_update (c->ifp); | |
298 | #endif /* HAVE_SNMP */ | |
299 | ||
300 | connected_free (c); | |
301 | ||
68980084 | 302 | ospf_if_update (ospf); |
718e3744 | 303 | |
304 | return 0; | |
305 | } | |
306 | \f | |
307 | void | |
308 | ospf_zebra_add (struct prefix_ipv4 *p, struct ospf_route *or) | |
309 | { | |
310 | u_char message; | |
311 | u_char distance; | |
312 | u_char flags; | |
313 | int psize; | |
314 | struct stream *s; | |
315 | struct ospf_path *path; | |
316 | listnode node; | |
317 | ||
318 | if (zclient->redist[ZEBRA_ROUTE_OSPF]) | |
319 | { | |
320 | message = 0; | |
321 | flags = 0; | |
322 | ||
323 | /* OSPF pass nexthop and metric */ | |
324 | SET_FLAG (message, ZAPI_MESSAGE_NEXTHOP); | |
325 | SET_FLAG (message, ZAPI_MESSAGE_METRIC); | |
326 | ||
327 | /* Distance value. */ | |
328 | distance = ospf_distance_apply (p, or); | |
329 | if (distance) | |
330 | SET_FLAG (message, ZAPI_MESSAGE_DISTANCE); | |
331 | ||
332 | /* Make packet. */ | |
333 | s = zclient->obuf; | |
334 | stream_reset (s); | |
335 | ||
336 | /* Length place holder. */ | |
337 | stream_putw (s, 0); | |
338 | ||
339 | /* Put command, type, flags, message. */ | |
340 | stream_putc (s, ZEBRA_IPV4_ROUTE_ADD); | |
341 | stream_putc (s, ZEBRA_ROUTE_OSPF); | |
342 | stream_putc (s, flags); | |
343 | stream_putc (s, message); | |
344 | ||
345 | /* Put prefix information. */ | |
346 | psize = PSIZE (p->prefixlen); | |
347 | stream_putc (s, p->prefixlen); | |
348 | stream_write (s, (u_char *)&p->prefix, psize); | |
349 | ||
350 | /* Nexthop count. */ | |
351 | stream_putc (s, or->path->count); | |
352 | ||
353 | /* Nexthop, ifindex, distance and metric information. */ | |
354 | for (node = listhead (or->path); node; nextnode (node)) | |
355 | { | |
356 | path = getdata (node); | |
357 | ||
358 | if (path->nexthop.s_addr != INADDR_ANY) | |
359 | { | |
360 | stream_putc (s, ZEBRA_NEXTHOP_IPV4); | |
361 | stream_put_in_addr (s, &path->nexthop); | |
362 | } | |
363 | else | |
364 | { | |
365 | stream_putc (s, ZEBRA_NEXTHOP_IFINDEX); | |
366 | if (path->oi) | |
367 | stream_putl (s, path->oi->ifp->ifindex); | |
368 | else | |
369 | stream_putl (s, 0); | |
370 | } | |
371 | } | |
372 | ||
373 | if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE)) | |
374 | stream_putc (s, distance); | |
375 | if (CHECK_FLAG (message, ZAPI_MESSAGE_METRIC)) | |
376 | { | |
377 | if (or->path_type == OSPF_PATH_TYPE1_EXTERNAL) | |
378 | stream_putl (s, or->cost + or->u.ext.type2_cost); | |
379 | else if (or->path_type == OSPF_PATH_TYPE2_EXTERNAL) | |
380 | stream_putl (s, or->u.ext.type2_cost); | |
381 | else | |
382 | stream_putl (s, or->cost); | |
383 | } | |
384 | ||
385 | stream_putw_at (s, 0, stream_get_endp (s)); | |
386 | ||
387 | writen (zclient->sock, s->data, stream_get_endp (s)); | |
388 | ||
389 | #if 0 | |
390 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
391 | { | |
392 | char *nexthop_str; | |
393 | ||
394 | nexthop_str = strdup (inet_ntoa (*nexthop)); | |
395 | zlog_info ("Zebra: Route add %s/%d nexthop %s metric %d", | |
396 | inet_ntoa (p->prefix), p->prefixlen, nexthop_str, | |
397 | metric); | |
398 | free (nexthop_str); | |
399 | } | |
400 | #endif /* 0 */ | |
401 | } | |
402 | } | |
403 | ||
404 | void | |
405 | ospf_zebra_delete (struct prefix_ipv4 *p, struct ospf_route *or) | |
406 | { | |
407 | struct zapi_ipv4 api; | |
408 | ||
409 | if (zclient->redist[ZEBRA_ROUTE_OSPF]) | |
410 | { | |
411 | api.type = ZEBRA_ROUTE_OSPF; | |
412 | api.flags = 0; | |
413 | api.message = 0; | |
414 | zapi_ipv4_delete (zclient, p, &api); | |
415 | ||
416 | #if 0 | |
417 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
418 | { | |
419 | char *nexthop_str; | |
420 | ||
421 | nexthop_str = strdup (inet_ntoa (*nexthop)); | |
422 | zlog_info ("Zebra: Route delete %s/%d nexthop %s", | |
423 | inet_ntoa (p->prefix), p->prefixlen, nexthop_str); | |
424 | free (nexthop_str); | |
425 | } | |
426 | #endif /* 0 */ | |
427 | } | |
428 | } | |
429 | ||
430 | void | |
431 | ospf_zebra_add_discard (struct prefix_ipv4 *p) | |
432 | { | |
433 | struct zapi_ipv4 api; | |
434 | ||
435 | if (zclient->redist[ZEBRA_ROUTE_OSPF]) | |
436 | { | |
437 | api.type = ZEBRA_ROUTE_OSPF; | |
438 | api.flags = ZEBRA_FLAG_BLACKHOLE; | |
439 | api.message = 0; | |
440 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); | |
441 | api.nexthop_num = 0; | |
442 | api.ifindex_num = 0; | |
443 | ||
444 | zapi_ipv4_add (zclient, p, &api); | |
445 | } | |
446 | } | |
447 | ||
448 | void | |
449 | ospf_zebra_delete_discard (struct prefix_ipv4 *p) | |
450 | { | |
451 | struct zapi_ipv4 api; | |
452 | ||
453 | if (zclient->redist[ZEBRA_ROUTE_OSPF]) | |
454 | { | |
455 | api.type = ZEBRA_ROUTE_OSPF; | |
456 | api.flags = ZEBRA_FLAG_BLACKHOLE; | |
457 | api.message = 0; | |
458 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); | |
459 | api.nexthop_num = 0; | |
460 | api.ifindex_num = 0; | |
461 | ||
462 | zapi_ipv4_delete (zclient, p, &api); | |
463 | } | |
464 | } | |
465 | ||
466 | int | |
467 | ospf_is_type_redistributed (int type) | |
468 | { | |
469 | return (DEFAULT_ROUTE_TYPE (type)) ? | |
470 | zclient->default_information : zclient->redist[type]; | |
471 | } | |
472 | ||
473 | int | |
474 | ospf_redistribute_set (int type, int mtype, int mvalue) | |
475 | { | |
68980084 | 476 | struct ospf *ospf = ospf_top; |
718e3744 | 477 | int force = 0; |
478 | ||
479 | if (ospf_is_type_redistributed (type)) | |
480 | { | |
68980084 | 481 | if (mtype != ospf->dmetric[type].type) |
718e3744 | 482 | { |
68980084 | 483 | ospf->dmetric[type].type = mtype; |
718e3744 | 484 | force = LSA_REFRESH_FORCE; |
485 | } | |
68980084 | 486 | if (mvalue != ospf->dmetric[type].value) |
718e3744 | 487 | { |
68980084 | 488 | ospf->dmetric[type].value = mvalue; |
718e3744 | 489 | force = LSA_REFRESH_FORCE; |
490 | } | |
491 | ||
68980084 | 492 | ospf_external_lsa_refresh_type (ospf, type, force); |
718e3744 | 493 | |
494 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
495 | zlog_info ("Redistribute[%s]: Refresh Type[%d], Metric[%d]", | |
496 | LOOKUP (ospf_redistributed_proto, type), | |
68980084 | 497 | metric_type (ospf, type), metric_value (ospf, type)); |
718e3744 | 498 | |
499 | return CMD_SUCCESS; | |
500 | } | |
501 | ||
68980084 | 502 | ospf->dmetric[type].type = mtype; |
503 | ospf->dmetric[type].value = mvalue; | |
718e3744 | 504 | |
505 | zclient_redistribute_set (zclient, type); | |
506 | ||
507 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
508 | zlog_info ("Redistribute[%s]: Start Type[%d], Metric[%d]", | |
509 | LOOKUP (ospf_redistributed_proto, type), | |
68980084 | 510 | metric_type (ospf, type), metric_value (ospf, type)); |
718e3744 | 511 | |
68980084 | 512 | ospf_asbr_status_update (ospf, ++ospf->redistribute); |
718e3744 | 513 | |
514 | return CMD_SUCCESS; | |
515 | } | |
516 | ||
517 | int | |
518 | ospf_redistribute_unset (int type) | |
519 | { | |
68980084 | 520 | struct ospf *ospf = ospf_top; |
521 | ||
718e3744 | 522 | if (type == zclient->redist_default) |
523 | return CMD_SUCCESS; | |
524 | ||
525 | if (! ospf_is_type_redistributed (type)) | |
526 | return CMD_SUCCESS; | |
527 | ||
528 | zclient_redistribute_unset (zclient, type); | |
529 | ||
530 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
531 | zlog_info ("Redistribute[%s]: Stop", | |
532 | LOOKUP (ospf_redistributed_proto, type)); | |
533 | ||
68980084 | 534 | ospf->dmetric[type].type = -1; |
535 | ospf->dmetric[type].value = -1; | |
718e3744 | 536 | |
537 | /* Remove the routes from OSPF table. */ | |
538 | ospf_redistribute_withdraw (type); | |
539 | ||
68980084 | 540 | ospf_asbr_status_update (ospf, --ospf->redistribute); |
718e3744 | 541 | |
542 | return CMD_SUCCESS; | |
543 | } | |
544 | ||
545 | int | |
546 | ospf_redistribute_default_set (int originate, int mtype, int mvalue) | |
547 | { | |
68980084 | 548 | struct ospf *ospf = ospf_top; |
549 | ||
718e3744 | 550 | int force = 0; |
551 | if (ospf_is_type_redistributed (DEFAULT_ROUTE)) | |
552 | { | |
68980084 | 553 | if (mtype != ospf->dmetric[DEFAULT_ROUTE].type) |
718e3744 | 554 | { |
68980084 | 555 | ospf->dmetric[DEFAULT_ROUTE].type = mtype; |
718e3744 | 556 | force = 1; |
557 | } | |
68980084 | 558 | if (mvalue != ospf->dmetric[DEFAULT_ROUTE].value) |
718e3744 | 559 | { |
560 | force = 1; | |
68980084 | 561 | ospf->dmetric[DEFAULT_ROUTE].value = mvalue; |
718e3744 | 562 | } |
563 | ||
68980084 | 564 | ospf_external_lsa_refresh_default (ospf); |
718e3744 | 565 | |
566 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
567 | zlog_info ("Redistribute[%s]: Refresh Type[%d], Metric[%d]", | |
568 | LOOKUP (ospf_redistributed_proto, DEFAULT_ROUTE), | |
68980084 | 569 | metric_type (ospf, DEFAULT_ROUTE), |
570 | metric_value (ospf, DEFAULT_ROUTE)); | |
718e3744 | 571 | return CMD_SUCCESS; |
572 | } | |
573 | ||
68980084 | 574 | ospf->default_originate = originate; |
575 | ospf->dmetric[DEFAULT_ROUTE].type = mtype; | |
576 | ospf->dmetric[DEFAULT_ROUTE].value = mvalue; | |
718e3744 | 577 | |
578 | zclient_redistribute_default_set (zclient); | |
579 | ||
580 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
581 | zlog_info ("Redistribute[DEFAULT]: Start Type[%d], Metric[%d]", | |
68980084 | 582 | metric_type (ospf, DEFAULT_ROUTE), |
583 | metric_value (ospf, DEFAULT_ROUTE)); | |
718e3744 | 584 | |
68980084 | 585 | if (ospf->router_id.s_addr == 0) |
586 | ospf->external_origin |= (1 << DEFAULT_ROUTE); | |
718e3744 | 587 | else |
588 | thread_add_timer (master, ospf_default_originate_timer, | |
68980084 | 589 | &ospf->default_originate, 1); |
718e3744 | 590 | |
68980084 | 591 | ospf_asbr_status_update (ospf, ++ospf->redistribute); |
718e3744 | 592 | |
593 | return CMD_SUCCESS; | |
594 | } | |
595 | ||
596 | int | |
597 | ospf_redistribute_default_unset () | |
598 | { | |
68980084 | 599 | struct ospf *ospf = ospf_top; |
600 | ||
718e3744 | 601 | if (!ospf_is_type_redistributed (DEFAULT_ROUTE)) |
602 | return CMD_SUCCESS; | |
603 | ||
68980084 | 604 | ospf->default_originate = DEFAULT_ORIGINATE_NONE; |
605 | ospf->dmetric[DEFAULT_ROUTE].type = -1; | |
606 | ospf->dmetric[DEFAULT_ROUTE].value = -1; | |
718e3744 | 607 | |
608 | zclient_redistribute_default_unset (zclient); | |
609 | ||
610 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
611 | zlog_info ("Redistribute[DEFAULT]: Stop"); | |
612 | ||
68980084 | 613 | ospf_asbr_status_update (ospf, --ospf->redistribute); |
718e3744 | 614 | |
615 | return CMD_SUCCESS; | |
616 | } | |
617 | ||
618 | int | |
619 | ospf_external_lsa_originate_check (struct external_info *ei) | |
620 | { | |
68980084 | 621 | struct ospf *ospf = ospf_top; |
622 | ||
718e3744 | 623 | /* If prefix is multicast, then do not originate LSA. */ |
624 | if (IN_MULTICAST (htonl (ei->p.prefix.s_addr))) | |
625 | { | |
626 | zlog_info ("LSA[Type5:%s]: Not originate AS-external-LSA, " | |
627 | "Prefix belongs multicast", inet_ntoa (ei->p.prefix)); | |
628 | return 0; | |
629 | } | |
630 | ||
631 | /* Take care of default-originate. */ | |
632 | if (is_prefix_default (&ei->p)) | |
68980084 | 633 | if (ospf->default_originate == DEFAULT_ORIGINATE_NONE) |
718e3744 | 634 | { |
635 | zlog_info ("LSA[Type5:0.0.0.0]: Not originate AS-exntenal-LSA " | |
636 | "for default"); | |
637 | return 0; | |
638 | } | |
639 | ||
640 | return 1; | |
641 | } | |
642 | ||
643 | /* If connected prefix is OSPF enable interface, then do not announce. */ | |
644 | int | |
68980084 | 645 | ospf_distribute_check_connected (struct ospf *ospf, |
646 | struct external_info *ei) | |
718e3744 | 647 | { |
648 | struct route_node *rn; | |
649 | ||
68980084 | 650 | for (rn = route_top (ospf->networks); rn; rn = route_next (rn)) |
718e3744 | 651 | if (rn->info != NULL) |
652 | if (prefix_match (&rn->p, (struct prefix *)&ei->p)) | |
68980084 | 653 | { |
654 | route_unlock_node (rn); | |
655 | return 0; | |
656 | } | |
718e3744 | 657 | |
658 | return 1; | |
659 | } | |
660 | ||
661 | /* return 1 if external LSA must be originated, 0 otherwise */ | |
662 | int | |
68980084 | 663 | ospf_redistribute_check (struct ospf *ospf, |
664 | struct external_info *ei, int *changed) | |
718e3744 | 665 | { |
666 | struct route_map_set_values save_values; | |
667 | struct prefix_ipv4 *p = &ei->p; | |
668 | u_char type = is_prefix_default (&ei->p) ? DEFAULT_ROUTE : ei->type; | |
669 | ||
670 | if (changed) | |
671 | *changed = 0; | |
672 | ||
673 | if (!ospf_external_lsa_originate_check (ei)) | |
674 | return 0; | |
675 | ||
676 | /* Take care connected route. */ | |
68980084 | 677 | if (type == ZEBRA_ROUTE_CONNECT && |
678 | !ospf_distribute_check_connected (ospf, ei)) | |
718e3744 | 679 | return 0; |
680 | ||
681 | if (!DEFAULT_ROUTE_TYPE (type) && DISTRIBUTE_NAME (type)) | |
682 | /* distirbute-list exists, but access-list may not? */ | |
683 | if (DISTRIBUTE_LIST (type)) | |
684 | if (access_list_apply (DISTRIBUTE_LIST (type), p) == FILTER_DENY) | |
685 | { | |
686 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
687 | zlog_info ("Redistribute[%s]: %s/%d filtered by ditribute-list.", | |
688 | LOOKUP (ospf_redistributed_proto, type), | |
689 | inet_ntoa (p->prefix), p->prefixlen); | |
690 | return 0; | |
691 | } | |
692 | ||
693 | save_values = ei->route_map_set; | |
694 | ospf_reset_route_map_set_values (&ei->route_map_set); | |
695 | ||
696 | /* apply route-map if needed */ | |
697 | if (ROUTEMAP_NAME (type)) | |
698 | { | |
699 | int ret; | |
700 | ||
701 | ret = route_map_apply (ROUTEMAP (type), (struct prefix *)p, | |
702 | RMAP_OSPF, ei); | |
703 | ||
704 | if (ret == RMAP_DENYMATCH) | |
705 | { | |
706 | ei->route_map_set = save_values; | |
707 | if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE)) | |
708 | zlog_info ("Redistribute[%s]: %s/%d filtered by route-map.", | |
709 | LOOKUP (ospf_redistributed_proto, type), | |
710 | inet_ntoa (p->prefix), p->prefixlen); | |
711 | return 0; | |
712 | } | |
713 | ||
714 | /* check if 'route-map set' changed something */ | |
715 | if (changed) | |
716 | *changed = !ospf_route_map_set_compare (&ei->route_map_set, | |
717 | &save_values); | |
718 | } | |
719 | ||
720 | return 1; | |
721 | } | |
722 | ||
723 | /* OSPF route-map set for redistribution */ | |
724 | void | |
725 | ospf_routemap_set (int type, char *name) | |
726 | { | |
727 | if (ROUTEMAP_NAME (type)) | |
728 | free (ROUTEMAP_NAME (type)); | |
729 | ||
730 | ROUTEMAP_NAME (type) = strdup (name); | |
731 | ROUTEMAP (type) = route_map_lookup_by_name (name); | |
732 | } | |
733 | ||
734 | void | |
735 | ospf_routemap_unset (int type) | |
736 | { | |
737 | if (ROUTEMAP_NAME (type)) | |
738 | free (ROUTEMAP_NAME (type)); | |
739 | ||
740 | ROUTEMAP_NAME (type) = NULL; | |
741 | ROUTEMAP (type) = NULL; | |
742 | } | |
743 | ||
744 | /* Zebra route add and delete treatment. */ | |
745 | int | |
746 | ospf_zebra_read_ipv4 (int command, struct zclient *zclient, | |
747 | zebra_size_t length) | |
748 | { | |
749 | struct stream *s; | |
750 | struct zapi_ipv4 api; | |
751 | unsigned long ifindex; | |
752 | struct in_addr nexthop; | |
753 | struct prefix_ipv4 p; | |
754 | struct external_info *ei; | |
68980084 | 755 | struct ospf *ospf = ospf_top; |
718e3744 | 756 | |
757 | s = zclient->ibuf; | |
758 | ifindex = 0; | |
759 | nexthop.s_addr = 0; | |
760 | ||
761 | /* Type, flags, message. */ | |
762 | api.type = stream_getc (s); | |
763 | api.flags = stream_getc (s); | |
764 | api.message = stream_getc (s); | |
765 | ||
766 | /* IPv4 prefix. */ | |
767 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
768 | p.family = AF_INET; | |
769 | p.prefixlen = stream_getc (s); | |
770 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); | |
771 | ||
772 | /* Nexthop, ifindex, distance, metric. */ | |
773 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
774 | { | |
775 | api.nexthop_num = stream_getc (s); | |
776 | nexthop.s_addr = stream_get_ipv4 (s); | |
777 | } | |
778 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) | |
779 | { | |
780 | api.ifindex_num = stream_getc (s); | |
781 | ifindex = stream_getl (s); | |
782 | } | |
783 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) | |
784 | api.distance = stream_getc (s); | |
785 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) | |
786 | api.metric = stream_getl (s); | |
787 | ||
788 | if (command == ZEBRA_IPV4_ROUTE_ADD) | |
789 | { | |
790 | ei = ospf_external_info_add (api.type, p, ifindex, nexthop); | |
791 | ||
68980084 | 792 | if (ospf->router_id.s_addr == 0) |
718e3744 | 793 | /* Set flags to generate AS-external-LSA originate event |
794 | for each redistributed protocols later. */ | |
68980084 | 795 | ospf->external_origin |= (1 << api.type); |
718e3744 | 796 | else |
797 | { | |
798 | if (ei) | |
799 | { | |
800 | if (is_prefix_default (&p)) | |
68980084 | 801 | ospf_external_lsa_refresh_default (ospf); |
718e3744 | 802 | else |
803 | { | |
804 | struct ospf_lsa *current; | |
805 | ||
68980084 | 806 | current = ospf_external_info_find_lsa (ospf, &ei->p); |
718e3744 | 807 | if (!current) |
68980084 | 808 | ospf_external_lsa_originate (ospf, ei); |
718e3744 | 809 | else if (IS_LSA_MAXAGE (current)) |
68980084 | 810 | ospf_external_lsa_refresh (ospf, current, |
811 | ei, LSA_REFRESH_FORCE); | |
718e3744 | 812 | else |
813 | zlog_warn ("ospf_zebra_read_ipv4() : %s already exists", | |
814 | inet_ntoa (p.prefix)); | |
815 | } | |
816 | } | |
817 | } | |
818 | } | |
819 | else /* if (command == ZEBRA_IPV4_ROUTE_DELETE) */ | |
820 | { | |
821 | ospf_external_info_delete (api.type, p); | |
822 | if ( !is_prefix_default (&p)) | |
68980084 | 823 | ospf_external_lsa_flush (ospf, api.type, &p, ifindex, nexthop); |
718e3744 | 824 | else |
68980084 | 825 | ospf_external_lsa_refresh_default (ospf); |
718e3744 | 826 | } |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
831 | \f | |
832 | int | |
68980084 | 833 | ospf_distribute_list_out_set (struct ospf *ospf, int type, char *name) |
718e3744 | 834 | { |
835 | /* Lookup access-list for distribute-list. */ | |
836 | DISTRIBUTE_LIST (type) = access_list_lookup (AFI_IP, name); | |
837 | ||
838 | /* Clear previous distribute-name. */ | |
839 | if (DISTRIBUTE_NAME (type)) | |
840 | free (DISTRIBUTE_NAME (type)); | |
841 | ||
842 | /* Set distribute-name. */ | |
843 | DISTRIBUTE_NAME (type) = strdup (name); | |
844 | ||
845 | /* If access-list have been set, schedule update timer. */ | |
846 | if (DISTRIBUTE_LIST (type)) | |
68980084 | 847 | ospf_distribute_list_update (ospf, type); |
718e3744 | 848 | |
849 | return CMD_SUCCESS; | |
850 | } | |
851 | ||
852 | int | |
68980084 | 853 | ospf_distribute_list_out_unset (struct ospf *ospf, int type, char *name) |
718e3744 | 854 | { |
855 | /* Schedule update timer. */ | |
856 | if (DISTRIBUTE_LIST (type)) | |
68980084 | 857 | ospf_distribute_list_update (ospf, type); |
718e3744 | 858 | |
859 | /* Unset distribute-list. */ | |
860 | DISTRIBUTE_LIST (type) = NULL; | |
861 | ||
862 | /* Clear distribute-name. */ | |
863 | if (DISTRIBUTE_NAME (type)) | |
864 | free (DISTRIBUTE_NAME (type)); | |
865 | ||
866 | DISTRIBUTE_NAME (type) = NULL; | |
867 | ||
868 | return CMD_SUCCESS; | |
869 | } | |
870 | ||
871 | /* distribute-list update timer. */ | |
872 | int | |
873 | ospf_distribute_list_update_timer (struct thread *thread) | |
874 | { | |
875 | struct route_node *rn; | |
876 | struct external_info *ei; | |
877 | struct route_table *rt; | |
878 | struct ospf_lsa *lsa; | |
879 | u_char type; | |
68980084 | 880 | struct ospf *ospf = ospf_top; |
718e3744 | 881 | |
882 | type = (int) THREAD_ARG (thread); | |
883 | rt = EXTERNAL_INFO (type); | |
884 | ||
68980084 | 885 | ospf->t_distribute_update = NULL; |
718e3744 | 886 | |
887 | zlog_info ("Zebra[Redistribute]: distribute-list update timer fired!"); | |
888 | ||
889 | /* foreach all external info. */ | |
890 | if (rt) | |
891 | for (rn = route_top (rt); rn; rn = route_next (rn)) | |
892 | if ((ei = rn->info) != NULL) | |
893 | { | |
894 | if (is_prefix_default (&ei->p)) | |
68980084 | 895 | ospf_external_lsa_refresh_default (ospf); |
896 | else if ((lsa = ospf_external_info_find_lsa (ospf, &ei->p))) | |
897 | ospf_external_lsa_refresh (ospf, lsa, ei, LSA_REFRESH_IF_CHANGED); | |
718e3744 | 898 | else |
68980084 | 899 | ospf_external_lsa_originate (ospf, ei); |
718e3744 | 900 | } |
901 | return 0; | |
902 | } | |
903 | ||
904 | #define OSPF_DISTRIBUTE_UPDATE_DELAY 5 | |
905 | ||
906 | /* Update distribute-list and set timer to apply access-list. */ | |
907 | void | |
68980084 | 908 | ospf_distribute_list_update (struct ospf *ospf, int type) |
718e3744 | 909 | { |
910 | struct route_table *rt; | |
911 | ||
718e3744 | 912 | /* External info does not exist. */ |
913 | if (!(rt = EXTERNAL_INFO (type))) | |
914 | return; | |
915 | ||
916 | /* If exists previously invoked thread, then cancel it. */ | |
68980084 | 917 | if (ospf->t_distribute_update) |
918 | OSPF_TIMER_OFF (ospf->t_distribute_update); | |
718e3744 | 919 | |
920 | /* Set timer. */ | |
68980084 | 921 | ospf->t_distribute_update = |
718e3744 | 922 | thread_add_timer (master, ospf_distribute_list_update_timer, |
923 | (void *) type, OSPF_DISTRIBUTE_UPDATE_DELAY); | |
718e3744 | 924 | } |
925 | ||
926 | /* If access-list is updated, apply some check. */ | |
927 | void | |
928 | ospf_filter_update (struct access_list *access) | |
929 | { | |
68980084 | 930 | struct ospf *ospf = ospf_top; |
718e3744 | 931 | int type; |
932 | int abr_inv = 0; | |
933 | struct ospf_area *area; | |
934 | listnode node; | |
935 | ||
936 | /* If OSPF instatnce does not exist, return right now. */ | |
68980084 | 937 | if (ospf == NULL) |
718e3744 | 938 | return; |
939 | ||
718e3744 | 940 | /* Update distribute-list, and apply filter. */ |
941 | for (type = 0; type < ZEBRA_ROUTE_MAX; type++) | |
942 | { | |
943 | if (ROUTEMAP (type) != NULL) | |
944 | { | |
945 | /* if route-map is not NULL it may be using this access list */ | |
68980084 | 946 | ospf_distribute_list_update (ospf, type); |
718e3744 | 947 | continue; |
948 | } | |
949 | ||
950 | ||
951 | if (DISTRIBUTE_NAME (type)) | |
952 | { | |
953 | /* Keep old access-list for distribute-list. */ | |
954 | struct access_list *old = DISTRIBUTE_LIST (type); | |
955 | ||
956 | /* Update access-list for distribute-list. */ | |
957 | DISTRIBUTE_LIST (type) = | |
958 | access_list_lookup (AFI_IP, DISTRIBUTE_NAME (type)); | |
959 | ||
960 | /* No update for this distribute type. */ | |
961 | if (old == NULL && DISTRIBUTE_LIST (type) == NULL) | |
962 | continue; | |
963 | ||
964 | /* Schedule distribute-list update timer. */ | |
965 | if (DISTRIBUTE_LIST (type) == NULL || | |
966 | strcmp (DISTRIBUTE_NAME (type), access->name) == 0) | |
68980084 | 967 | ospf_distribute_list_update (ospf, type); |
718e3744 | 968 | } |
969 | } | |
970 | ||
971 | /* Update Area access-list. */ | |
68980084 | 972 | for (node = listhead (ospf->areas); node; nextnode (node)) |
718e3744 | 973 | if ((area = getdata (node)) != NULL) |
974 | { | |
975 | if (EXPORT_NAME (area)) | |
976 | { | |
977 | EXPORT_LIST (area) = NULL; | |
978 | abr_inv++; | |
979 | } | |
980 | ||
981 | if (IMPORT_NAME (area)) | |
982 | { | |
983 | IMPORT_LIST (area) = NULL; | |
984 | abr_inv++; | |
985 | } | |
986 | } | |
987 | ||
988 | /* Schedule ABR tasks -- this will be changed -- takada. */ | |
989 | if (OSPF_IS_ABR && abr_inv) | |
68980084 | 990 | ospf_schedule_abr_task (ospf); |
718e3744 | 991 | } |
992 | ||
993 | \f | |
994 | struct ospf_distance * | |
995 | ospf_distance_new () | |
996 | { | |
997 | struct ospf_distance *new; | |
998 | new = XMALLOC (MTYPE_OSPF_DISTANCE, sizeof (struct ospf_distance)); | |
999 | memset (new, 0, sizeof (struct ospf_distance)); | |
1000 | return new; | |
1001 | } | |
1002 | ||
1003 | void | |
1004 | ospf_distance_free (struct ospf_distance *odistance) | |
1005 | { | |
1006 | XFREE (MTYPE_OSPF_DISTANCE, odistance); | |
1007 | } | |
1008 | ||
1009 | int | |
1010 | ospf_distance_set (struct vty *vty, char *distance_str, char *ip_str, | |
1011 | char *access_list_str) | |
1012 | { | |
1013 | int ret; | |
1014 | struct prefix_ipv4 p; | |
1015 | u_char distance; | |
1016 | struct route_node *rn; | |
1017 | struct ospf_distance *odistance; | |
68980084 | 1018 | struct ospf *ospf = ospf_top; |
718e3744 | 1019 | |
1020 | ret = str2prefix_ipv4 (ip_str, &p); | |
1021 | if (ret == 0) | |
1022 | { | |
1023 | vty_out (vty, "Malformed prefix%s", VTY_NEWLINE); | |
1024 | return CMD_WARNING; | |
1025 | } | |
1026 | ||
1027 | distance = atoi (distance_str); | |
1028 | ||
1029 | /* Get OSPF distance node. */ | |
68980084 | 1030 | rn = route_node_get (ospf->distance_table, (struct prefix *) &p); |
718e3744 | 1031 | if (rn->info) |
1032 | { | |
1033 | odistance = rn->info; | |
1034 | route_unlock_node (rn); | |
1035 | } | |
1036 | else | |
1037 | { | |
1038 | odistance = ospf_distance_new (); | |
1039 | rn->info = odistance; | |
1040 | } | |
1041 | ||
1042 | /* Set distance value. */ | |
1043 | odistance->distance = distance; | |
1044 | ||
1045 | /* Reset access-list configuration. */ | |
1046 | if (odistance->access_list) | |
1047 | { | |
1048 | free (odistance->access_list); | |
1049 | odistance->access_list = NULL; | |
1050 | } | |
1051 | if (access_list_str) | |
1052 | odistance->access_list = strdup (access_list_str); | |
1053 | ||
1054 | return CMD_SUCCESS; | |
1055 | } | |
1056 | ||
1057 | int | |
1058 | ospf_distance_unset (struct vty *vty, char *distance_str, char *ip_str, | |
1059 | char *access_list_str) | |
1060 | { | |
1061 | int ret; | |
1062 | struct prefix_ipv4 p; | |
1063 | u_char distance; | |
1064 | struct route_node *rn; | |
1065 | struct ospf_distance *odistance; | |
68980084 | 1066 | struct ospf *ospf = ospf_top; |
718e3744 | 1067 | |
1068 | ret = str2prefix_ipv4 (ip_str, &p); | |
1069 | if (ret == 0) | |
1070 | { | |
1071 | vty_out (vty, "Malformed prefix%s", VTY_NEWLINE); | |
1072 | return CMD_WARNING; | |
1073 | } | |
1074 | ||
1075 | distance = atoi (distance_str); | |
1076 | ||
68980084 | 1077 | rn = route_node_lookup (ospf->distance_table, (struct prefix *)&p); |
718e3744 | 1078 | if (! rn) |
1079 | { | |
1080 | vty_out (vty, "Can't find specified prefix%s", VTY_NEWLINE); | |
1081 | return CMD_WARNING; | |
1082 | } | |
1083 | ||
1084 | odistance = rn->info; | |
1085 | ||
1086 | if (odistance->access_list) | |
1087 | free (odistance->access_list); | |
1088 | ospf_distance_free (odistance); | |
1089 | ||
1090 | rn->info = NULL; | |
1091 | route_unlock_node (rn); | |
1092 | route_unlock_node (rn); | |
1093 | ||
1094 | return CMD_SUCCESS; | |
1095 | } | |
1096 | ||
1097 | void | |
68980084 | 1098 | ospf_distance_reset (struct ospf *ospf) |
718e3744 | 1099 | { |
1100 | struct route_node *rn; | |
1101 | struct ospf_distance *odistance; | |
1102 | ||
68980084 | 1103 | for (rn = route_top (ospf->distance_table); rn; rn = route_next (rn)) |
718e3744 | 1104 | if ((odistance = rn->info) != NULL) |
1105 | { | |
1106 | if (odistance->access_list) | |
1107 | free (odistance->access_list); | |
1108 | ospf_distance_free (odistance); | |
1109 | rn->info = NULL; | |
1110 | route_unlock_node (rn); | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | u_char | |
1115 | ospf_distance_apply (struct prefix_ipv4 *p, struct ospf_route *or) | |
1116 | { | |
68980084 | 1117 | struct ospf *ospf = ospf_top; |
718e3744 | 1118 | |
68980084 | 1119 | if (ospf == NULL) |
718e3744 | 1120 | return 0; |
1121 | ||
68980084 | 1122 | if (ospf->distance_intra) |
718e3744 | 1123 | if (or->path_type == OSPF_PATH_INTRA_AREA) |
68980084 | 1124 | return ospf->distance_intra; |
718e3744 | 1125 | |
68980084 | 1126 | if (ospf->distance_inter) |
718e3744 | 1127 | if (or->path_type == OSPF_PATH_INTER_AREA) |
68980084 | 1128 | return ospf->distance_inter; |
718e3744 | 1129 | |
68980084 | 1130 | if (ospf->distance_external) |
718e3744 | 1131 | if (or->path_type == OSPF_PATH_TYPE1_EXTERNAL |
1132 | || or->path_type == OSPF_PATH_TYPE2_EXTERNAL) | |
68980084 | 1133 | return ospf->distance_external; |
718e3744 | 1134 | |
68980084 | 1135 | if (ospf->distance_all) |
1136 | return ospf->distance_all; | |
718e3744 | 1137 | |
1138 | return 0; | |
1139 | } | |
1140 | ||
1141 | void | |
1142 | ospf_zebra_init () | |
1143 | { | |
1144 | /* Allocate zebra structure. */ | |
1145 | zclient = zclient_new (); | |
1146 | zclient_init (zclient, ZEBRA_ROUTE_OSPF); | |
1147 | zclient->interface_add = ospf_interface_add; | |
1148 | zclient->interface_delete = ospf_interface_delete; | |
1149 | zclient->interface_up = ospf_interface_state_up; | |
1150 | zclient->interface_down = ospf_interface_state_down; | |
1151 | zclient->interface_address_add = ospf_interface_address_add; | |
1152 | zclient->interface_address_delete = ospf_interface_address_delete; | |
1153 | zclient->ipv4_route_add = ospf_zebra_read_ipv4; | |
1154 | zclient->ipv4_route_delete = ospf_zebra_read_ipv4; | |
1155 | ||
1156 | access_list_add_hook (ospf_filter_update); | |
1157 | access_list_delete_hook (ospf_filter_update); | |
1158 | } |