Line data Source code
1 : /* Redistribution Handler
2 : * Copyright (C) 1998 Kunihiro Ishiguro
3 : *
4 : * This file is part of GNU Zebra.
5 : *
6 : * GNU Zebra is free software; you can redistribute it and/or modify it
7 : * under the terms of the GNU General Public License as published by the
8 : * Free Software Foundation; either version 2, or (at your option) any
9 : * later version.
10 : *
11 : * GNU Zebra is distributed in the hope that it will be useful, but
12 : * WITHOUT ANY WARRANTY; without even the implied warranty of
13 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 : * General Public License for more details.
15 : *
16 : * You should have received a copy of the GNU General Public License along
17 : * with this program; see the file COPYING; if not, write to the Free Software
18 : * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 : */
20 :
21 : #include <zebra.h>
22 :
23 : #include "vector.h"
24 : #include "vty.h"
25 : #include "command.h"
26 : #include "prefix.h"
27 : #include "table.h"
28 : #include "stream.h"
29 : #include "zclient.h"
30 : #include "linklist.h"
31 : #include "log.h"
32 : #include "vrf.h"
33 : #include "srcdest_table.h"
34 :
35 : #include "zebra/rib.h"
36 : #include "zebra/zebra_router.h"
37 : #include "zebra/zebra_ns.h"
38 : #include "zebra/zebra_vrf.h"
39 : #include "zebra/zebra_routemap.h"
40 : #include "zebra/redistribute.h"
41 : #include "zebra/debug.h"
42 : #include "zebra/router-id.h"
43 : #include "zebra/zapi_msg.h"
44 : #include "zebra/zebra_vxlan.h"
45 : #include "zebra/zebra_errors.h"
46 :
47 : #define ZEBRA_PTM_SUPPORT
48 :
49 : /* array holding redistribute info about table redistribution */
50 : /* bit AFI is set if that AFI is redistributing routes from this table */
51 : static int zebra_import_table_used[AFI_MAX][ZEBRA_KERNEL_TABLE_MAX];
52 : static uint32_t zebra_import_table_distance[AFI_MAX][ZEBRA_KERNEL_TABLE_MAX];
53 :
54 112 : int is_zebra_import_table_enabled(afi_t afi, vrf_id_t vrf_id, uint32_t table_id)
55 : {
56 : /*
57 : * Make sure that what we are called with actualy makes sense
58 : */
59 112 : if (afi == AFI_MAX)
60 : return 0;
61 :
62 112 : if (is_zebra_valid_kernel_table(table_id) &&
63 : table_id < ZEBRA_KERNEL_TABLE_MAX)
64 0 : return zebra_import_table_used[afi][table_id];
65 : return 0;
66 : }
67 :
68 0 : static void zebra_redistribute_default(struct zserv *client, vrf_id_t vrf_id)
69 : {
70 0 : int afi;
71 0 : struct prefix p;
72 0 : struct route_table *table;
73 0 : struct route_node *rn;
74 0 : struct route_entry *newre;
75 :
76 0 : for (afi = AFI_IP; afi <= AFI_IP6; afi++) {
77 :
78 0 : if (!vrf_bitmap_check(client->redist_default[afi], vrf_id))
79 0 : continue;
80 :
81 : /* Lookup table. */
82 0 : table = zebra_vrf_table(afi, SAFI_UNICAST, vrf_id);
83 0 : if (!table)
84 0 : continue;
85 :
86 : /* Lookup default route. */
87 0 : memset(&p, 0, sizeof(p));
88 0 : p.family = afi2family(afi);
89 0 : rn = route_node_lookup(table, &p);
90 0 : if (!rn)
91 0 : continue;
92 :
93 0 : RNODE_FOREACH_RE (rn, newre) {
94 0 : if (CHECK_FLAG(newre->flags, ZEBRA_FLAG_SELECTED))
95 0 : zsend_redistribute_route(
96 : ZEBRA_REDISTRIBUTE_ROUTE_ADD, client,
97 : rn, newre);
98 : }
99 :
100 0 : route_unlock_node(rn);
101 : }
102 0 : }
103 :
104 : /* Redistribute routes. */
105 0 : static void zebra_redistribute(struct zserv *client, int type,
106 : unsigned short instance, vrf_id_t vrf_id,
107 : int afi)
108 : {
109 0 : struct route_entry *newre;
110 0 : struct route_table *table;
111 0 : struct route_node *rn;
112 :
113 0 : table = zebra_vrf_table(afi, SAFI_UNICAST, vrf_id);
114 0 : if (!table)
115 : return;
116 :
117 0 : for (rn = route_top(table); rn; rn = srcdest_route_next(rn))
118 0 : RNODE_FOREACH_RE (rn, newre) {
119 0 : if (IS_ZEBRA_DEBUG_RIB)
120 0 : zlog_debug(
121 : "%s: client %s %pRN(%u:%u) checking: selected=%d, type=%d, distance=%d, metric=%d zebra_check_addr=%d",
122 : __func__,
123 : zebra_route_string(client->proto), rn,
124 : vrf_id, newre->instance,
125 : !!CHECK_FLAG(newre->flags,
126 : ZEBRA_FLAG_SELECTED),
127 : newre->type, newre->distance,
128 : newre->metric,
129 : zebra_check_addr(&rn->p));
130 :
131 0 : if (!CHECK_FLAG(newre->flags, ZEBRA_FLAG_SELECTED))
132 0 : continue;
133 0 : if ((type != ZEBRA_ROUTE_ALL
134 0 : && (newre->type != type
135 0 : || newre->instance != instance)))
136 0 : continue;
137 0 : if (!zebra_check_addr(&rn->p))
138 0 : continue;
139 :
140 0 : zsend_redistribute_route(ZEBRA_REDISTRIBUTE_ROUTE_ADD,
141 : client, rn, newre);
142 : }
143 : }
144 :
145 : /*
146 : * Function to check if prefix is candidate for
147 : * redistribute.
148 : */
149 196 : static bool zebra_redistribute_check(const struct route_node *rn,
150 : const struct route_entry *re,
151 : struct zserv *client)
152 : {
153 196 : struct zebra_vrf *zvrf;
154 196 : afi_t afi;
155 :
156 : /* Process only if there is valid re */
157 196 : if (!re)
158 : return false;
159 :
160 98 : afi = family2afi(rn->p.family);
161 98 : zvrf = vrf_info_lookup(re->vrf_id);
162 98 : if (re->vrf_id == VRF_DEFAULT && zvrf->table_id != re->table)
163 : return false;
164 :
165 : /* If default route and redistributed */
166 98 : if (is_default_prefix(&rn->p) &&
167 0 : vrf_bitmap_check(client->redist_default[afi], re->vrf_id))
168 : return true;
169 :
170 : /* If redistribute in enabled for zebra route all */
171 98 : if (vrf_bitmap_check(client->redist[afi][ZEBRA_ROUTE_ALL], re->vrf_id))
172 : return true;
173 :
174 : /*
175 : * If multi-instance then check for route
176 : * redistribution for given instance.
177 : */
178 98 : if (re->instance) {
179 0 : if (redist_check_instance(&client->mi_redist[afi][re->type],
180 : re->instance))
181 : return true;
182 : else
183 : return false;
184 : }
185 :
186 : /* If redistribution is enabled for give route type. */
187 98 : if (vrf_bitmap_check(client->redist[afi][re->type], re->vrf_id))
188 : return true;
189 :
190 : return false;
191 : }
192 :
193 : /* Either advertise a route for redistribution to registered clients or */
194 : /* withdraw redistribution if add cannot be done for client */
195 41 : void redistribute_update(const struct route_node *rn,
196 : const struct route_entry *re,
197 : const struct route_entry *prev_re)
198 : {
199 41 : struct listnode *node, *nnode;
200 41 : struct zserv *client;
201 :
202 41 : if (IS_ZEBRA_DEBUG_RIB)
203 0 : zlog_debug(
204 : "(%u:%u):%pRN(%u): Redist update re %p (%s), old %p (%s)",
205 : re->vrf_id, re->table, rn, re->instance, re,
206 : zebra_route_string(re->type), prev_re,
207 : prev_re ? zebra_route_string(prev_re->type) : "None");
208 :
209 41 : if (!zebra_check_addr(&rn->p)) {
210 7 : if (IS_ZEBRA_DEBUG_RIB)
211 0 : zlog_debug("Redist update filter prefix %pRN", rn);
212 7 : return;
213 : }
214 :
215 :
216 110 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
217 42 : if (zebra_redistribute_check(rn, re, client)) {
218 0 : if (IS_ZEBRA_DEBUG_RIB) {
219 0 : zlog_debug(
220 : "%s: client %s %pRN(%u:%u), type=%d, distance=%d, metric=%d",
221 : __func__,
222 : zebra_route_string(client->proto), rn,
223 : re->vrf_id, re->table, re->type,
224 : re->distance, re->metric);
225 : }
226 0 : zsend_redistribute_route(ZEBRA_REDISTRIBUTE_ROUTE_ADD,
227 : client, rn, re);
228 42 : } else if (zebra_redistribute_check(rn, prev_re, client))
229 0 : zsend_redistribute_route(ZEBRA_REDISTRIBUTE_ROUTE_DEL,
230 : client, rn, prev_re);
231 : }
232 : }
233 :
234 : /*
235 : * During a route delete, where 'new_re' is NULL, redist a delete to all
236 : * clients registered for the type of 'old_re'.
237 : * During a route update, redist a delete to any clients who will not see
238 : * an update when the new route is installed. There are cases when a client
239 : * may have seen a redist for 'old_re', but will not see
240 : * the redist for 'new_re'.
241 : */
242 30 : void redistribute_delete(const struct route_node *rn,
243 : const struct route_entry *old_re,
244 : const struct route_entry *new_re)
245 : {
246 30 : struct listnode *node, *nnode;
247 30 : struct zserv *client;
248 30 : vrf_id_t vrfid;
249 :
250 30 : if (old_re)
251 30 : vrfid = old_re->vrf_id;
252 0 : else if (new_re)
253 0 : vrfid = new_re->vrf_id;
254 : else
255 : return;
256 :
257 30 : if (IS_ZEBRA_DEBUG_RIB) {
258 0 : uint8_t old_inst, new_inst;
259 0 : uint32_t table = 0;
260 :
261 0 : old_inst = new_inst = 0;
262 :
263 0 : if (old_re) {
264 0 : old_inst = old_re->instance;
265 0 : table = old_re->table;
266 : }
267 0 : if (new_re) {
268 0 : new_inst = new_re->instance;
269 0 : table = new_re->table;
270 : }
271 :
272 0 : zlog_debug(
273 : "%u:%u%pRN: Redist del: re %p (%u:%s), new re %p (%u:%s)",
274 : vrfid, table, rn, old_re, old_inst,
275 : old_re ? zebra_route_string(old_re->type) : "None",
276 : new_re, new_inst,
277 : new_re ? zebra_route_string(new_re->type) : "None");
278 : }
279 :
280 : /* Skip invalid (e.g. linklocal) prefix */
281 30 : if (!zebra_check_addr(&rn->p)) {
282 2 : if (IS_ZEBRA_DEBUG_RIB) {
283 0 : zlog_debug(
284 : "%u:%pRN: Redist del old: skipping invalid prefix",
285 : vrfid, rn);
286 : }
287 2 : return;
288 : }
289 :
290 140 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
291 : /* Do not send unsolicited messages to synchronous clients. */
292 84 : if (client->synchronous)
293 28 : continue;
294 : /*
295 : * Skip this client if it will receive an update for the
296 : * 'new' re
297 : */
298 56 : if (zebra_redistribute_check(rn, new_re, client))
299 0 : continue;
300 :
301 : /* Send a delete for the 'old' re to any subscribed client. */
302 56 : if (zebra_redistribute_check(rn, old_re, client))
303 0 : zsend_redistribute_route(ZEBRA_REDISTRIBUTE_ROUTE_DEL,
304 : client, rn, old_re);
305 : }
306 : }
307 :
308 :
309 0 : void zebra_redistribute_add(ZAPI_HANDLER_ARGS)
310 : {
311 0 : afi_t afi = 0;
312 0 : int type = 0;
313 0 : unsigned short instance;
314 :
315 0 : STREAM_GETC(msg, afi);
316 0 : STREAM_GETC(msg, type);
317 0 : STREAM_GETW(msg, instance);
318 :
319 0 : if (IS_ZEBRA_DEBUG_EVENT)
320 0 : zlog_debug(
321 : "%s: client proto %s afi=%d, wants %s, vrf %s(%u), instance=%d",
322 : __func__, zebra_route_string(client->proto), afi,
323 : zebra_route_string(type), VRF_LOGNAME(zvrf->vrf),
324 : zvrf_id(zvrf), instance);
325 :
326 0 : if (afi == 0 || afi >= AFI_MAX) {
327 0 : flog_warn(EC_ZEBRA_REDISTRIBUTE_UNKNOWN_AF,
328 : "%s: Specified afi %d does not exist", __func__, afi);
329 0 : return;
330 : }
331 :
332 0 : if (type == 0 || type >= ZEBRA_ROUTE_MAX) {
333 0 : zlog_debug("%s: Specified Route Type %d does not exist",
334 : __func__, type);
335 0 : return;
336 : }
337 :
338 0 : if (instance) {
339 0 : if (!redist_check_instance(&client->mi_redist[afi][type],
340 : instance)) {
341 0 : redist_add_instance(&client->mi_redist[afi][type],
342 : instance);
343 0 : zebra_redistribute(client, type, instance,
344 : zvrf_id(zvrf), afi);
345 : }
346 : } else {
347 0 : if (!vrf_bitmap_check(client->redist[afi][type],
348 : zvrf_id(zvrf))) {
349 0 : if (IS_ZEBRA_DEBUG_EVENT)
350 0 : zlog_debug(
351 : "%s: setting vrf %s(%u) redist bitmap",
352 : __func__, VRF_LOGNAME(zvrf->vrf),
353 : zvrf_id(zvrf));
354 0 : vrf_bitmap_set(client->redist[afi][type],
355 : zvrf_id(zvrf));
356 0 : zebra_redistribute(client, type, 0, zvrf_id(zvrf), afi);
357 : }
358 : }
359 :
360 0 : stream_failure:
361 : return;
362 : }
363 :
364 0 : void zebra_redistribute_delete(ZAPI_HANDLER_ARGS)
365 : {
366 0 : afi_t afi = 0;
367 0 : int type = 0;
368 0 : unsigned short instance;
369 :
370 0 : STREAM_GETC(msg, afi);
371 0 : STREAM_GETC(msg, type);
372 0 : STREAM_GETW(msg, instance);
373 :
374 0 : if (IS_ZEBRA_DEBUG_EVENT)
375 0 : zlog_debug(
376 : "%s: client proto %s afi=%d, no longer wants %s, vrf %s(%u), instance=%d",
377 : __func__, zebra_route_string(client->proto), afi,
378 : zebra_route_string(type), VRF_LOGNAME(zvrf->vrf),
379 : zvrf_id(zvrf), instance);
380 :
381 :
382 0 : if (afi == 0 || afi >= AFI_MAX) {
383 0 : flog_warn(EC_ZEBRA_REDISTRIBUTE_UNKNOWN_AF,
384 : "%s: Specified afi %d does not exist", __func__, afi);
385 0 : return;
386 : }
387 :
388 0 : if (type == 0 || type >= ZEBRA_ROUTE_MAX) {
389 0 : zlog_debug("%s: Specified Route Type %d does not exist",
390 : __func__, type);
391 0 : return;
392 : }
393 :
394 : /*
395 : * NOTE: no need to withdraw the previously advertised routes. The
396 : * clients
397 : * themselves should keep track of the received routes from zebra and
398 : * withdraw them when necessary.
399 : */
400 0 : if (instance)
401 0 : redist_del_instance(&client->mi_redist[afi][type], instance);
402 : else
403 0 : vrf_bitmap_unset(client->redist[afi][type], zvrf_id(zvrf));
404 :
405 0 : stream_failure:
406 : return;
407 : }
408 :
409 0 : void zebra_redistribute_default_add(ZAPI_HANDLER_ARGS)
410 : {
411 0 : afi_t afi = 0;
412 :
413 0 : STREAM_GETC(msg, afi);
414 :
415 0 : if (afi == 0 || afi >= AFI_MAX) {
416 0 : flog_warn(EC_ZEBRA_REDISTRIBUTE_UNKNOWN_AF,
417 : "%s: Specified afi %u does not exist", __func__, afi);
418 0 : return;
419 : }
420 :
421 0 : vrf_bitmap_set(client->redist_default[afi], zvrf_id(zvrf));
422 0 : zebra_redistribute_default(client, zvrf_id(zvrf));
423 :
424 0 : stream_failure:
425 : return;
426 : }
427 :
428 0 : void zebra_redistribute_default_delete(ZAPI_HANDLER_ARGS)
429 : {
430 0 : afi_t afi = 0;
431 :
432 0 : STREAM_GETC(msg, afi);
433 :
434 0 : if (afi == 0 || afi >= AFI_MAX) {
435 0 : flog_warn(EC_ZEBRA_REDISTRIBUTE_UNKNOWN_AF,
436 : "%s: Specified afi %u does not exist", __func__, afi);
437 0 : return;
438 : }
439 :
440 0 : vrf_bitmap_unset(client->redist_default[afi], zvrf_id(zvrf));
441 :
442 0 : stream_failure:
443 : return;
444 : }
445 :
446 : /* Interface up information. */
447 11 : void zebra_interface_up_update(struct interface *ifp)
448 : {
449 11 : struct listnode *node, *nnode;
450 11 : struct zserv *client;
451 :
452 11 : if (IS_ZEBRA_DEBUG_EVENT)
453 0 : zlog_debug("MESSAGE: ZEBRA_INTERFACE_UP %s vrf %s(%u)",
454 : ifp->name, ifp->vrf->name, ifp->vrf->vrf_id);
455 :
456 11 : if (ifp->ptm_status || !ifp->ptm_enable) {
457 55 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode,
458 : client)) {
459 : /* Do not send unsolicited messages to synchronous
460 : * clients.
461 : */
462 33 : if (client->synchronous)
463 11 : continue;
464 :
465 22 : zsend_interface_update(ZEBRA_INTERFACE_UP,
466 : client, ifp);
467 22 : zsend_interface_link_params(client, ifp);
468 : }
469 : }
470 11 : }
471 :
472 : /* Interface down information. */
473 11 : void zebra_interface_down_update(struct interface *ifp)
474 : {
475 11 : struct listnode *node, *nnode;
476 11 : struct zserv *client;
477 :
478 11 : if (IS_ZEBRA_DEBUG_EVENT)
479 0 : zlog_debug("MESSAGE: ZEBRA_INTERFACE_DOWN %s vrf %s(%u)",
480 : ifp->name, ifp->vrf->name, ifp->vrf->vrf_id);
481 :
482 55 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
483 : /* Do not send unsolicited messages to synchronous clients. */
484 33 : if (client->synchronous)
485 11 : continue;
486 :
487 22 : zsend_interface_update(ZEBRA_INTERFACE_DOWN, client, ifp);
488 : }
489 11 : }
490 :
491 : /* Interface information update. */
492 14 : void zebra_interface_add_update(struct interface *ifp)
493 : {
494 14 : struct listnode *node, *nnode;
495 14 : struct zserv *client;
496 :
497 14 : if (IS_ZEBRA_DEBUG_EVENT)
498 0 : zlog_debug("MESSAGE: ZEBRA_INTERFACE_ADD %s vrf %s(%u)",
499 : ifp->name, ifp->vrf->name, ifp->vrf->vrf_id);
500 :
501 40 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
502 : /* Do not send unsolicited messages to synchronous clients. */
503 12 : if (client->synchronous)
504 4 : continue;
505 :
506 8 : client->ifadd_cnt++;
507 8 : zsend_interface_add(client, ifp);
508 8 : zsend_interface_link_params(client, ifp);
509 : }
510 14 : }
511 :
512 4 : void zebra_interface_delete_update(struct interface *ifp)
513 : {
514 4 : struct listnode *node, *nnode;
515 4 : struct zserv *client;
516 :
517 4 : if (IS_ZEBRA_DEBUG_EVENT)
518 0 : zlog_debug("MESSAGE: ZEBRA_INTERFACE_DELETE %s vrf %s(%u)",
519 : ifp->name, ifp->vrf->name, ifp->vrf->vrf_id);
520 :
521 20 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
522 : /* Do not send unsolicited messages to synchronous clients. */
523 12 : if (client->synchronous)
524 4 : continue;
525 :
526 8 : client->ifdel_cnt++;
527 8 : zsend_interface_delete(client, ifp);
528 : }
529 4 : }
530 :
531 : /* Interface address addition. */
532 41 : void zebra_interface_address_add_update(struct interface *ifp,
533 : struct connected *ifc)
534 : {
535 41 : struct listnode *node, *nnode;
536 41 : struct zserv *client;
537 :
538 41 : if (IS_ZEBRA_DEBUG_EVENT)
539 0 : zlog_debug(
540 : "MESSAGE: ZEBRA_INTERFACE_ADDRESS_ADD %pFX on %s vrf %s(%u)",
541 : ifc->address, ifp->name, ifp->vrf->name,
542 : ifp->vrf->vrf_id);
543 :
544 41 : if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL))
545 0 : flog_warn(
546 : EC_ZEBRA_ADVERTISING_UNUSABLE_ADDR,
547 : "advertising address to clients that is not yet usable.");
548 :
549 41 : zebra_vxlan_add_del_gw_macip(ifp, ifc->address, 1);
550 :
551 41 : router_id_add_address(ifc);
552 :
553 145 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
554 : /* Do not send unsolicited messages to synchronous clients. */
555 63 : if (client->synchronous)
556 21 : continue;
557 :
558 42 : if (CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) {
559 42 : client->connected_rt_add_cnt++;
560 42 : zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_ADD,
561 : client, ifp, ifc);
562 : }
563 : }
564 41 : }
565 :
566 : /* Interface address deletion. */
567 15 : void zebra_interface_address_delete_update(struct interface *ifp,
568 : struct connected *ifc)
569 : {
570 15 : struct listnode *node, *nnode;
571 15 : struct zserv *client;
572 :
573 15 : if (IS_ZEBRA_DEBUG_EVENT)
574 0 : zlog_debug(
575 : "MESSAGE: ZEBRA_INTERFACE_ADDRESS_DELETE %pFX on %s vrf %s(%u)",
576 : ifc->address, ifp->name, ifp->vrf->name,
577 : ifp->vrf->vrf_id);
578 :
579 15 : zebra_vxlan_add_del_gw_macip(ifp, ifc->address, 0);
580 :
581 15 : router_id_del_address(ifc);
582 :
583 75 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
584 : /* Do not send unsolicited messages to synchronous clients. */
585 45 : if (client->synchronous)
586 15 : continue;
587 :
588 30 : if (CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) {
589 30 : client->connected_rt_del_cnt++;
590 30 : zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_DELETE,
591 : client, ifp, ifc);
592 : }
593 : }
594 15 : }
595 :
596 : /* Interface VRF change. May need to delete from clients not interested in
597 : * the new VRF. Note that this function is invoked *prior* to the VRF change.
598 : */
599 0 : void zebra_interface_vrf_update_del(struct interface *ifp, vrf_id_t new_vrf_id)
600 : {
601 0 : struct listnode *node, *nnode;
602 0 : struct zserv *client;
603 :
604 0 : if (IS_ZEBRA_DEBUG_EVENT)
605 0 : zlog_debug(
606 : "MESSAGE: ZEBRA_INTERFACE_VRF_UPDATE/DEL %s VRF Id %u -> %u",
607 : ifp->name, ifp->vrf->vrf_id, new_vrf_id);
608 :
609 0 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
610 : /* Do not send unsolicited messages to synchronous clients. */
611 0 : if (client->synchronous)
612 0 : continue;
613 :
614 : /* Need to delete if the client is not interested in the new
615 : * VRF. */
616 0 : zsend_interface_update(ZEBRA_INTERFACE_DOWN, client, ifp);
617 0 : client->ifdel_cnt++;
618 0 : zsend_interface_delete(client, ifp);
619 0 : zsend_interface_vrf_update(client, ifp, new_vrf_id);
620 : }
621 0 : }
622 :
623 : /* Interface VRF change. This function is invoked *post* VRF change and sends an
624 : * add to clients who are interested in the new VRF but not in the old VRF.
625 : */
626 0 : void zebra_interface_vrf_update_add(struct interface *ifp, vrf_id_t old_vrf_id)
627 : {
628 0 : struct listnode *node, *nnode;
629 0 : struct zserv *client;
630 :
631 0 : if (IS_ZEBRA_DEBUG_EVENT)
632 0 : zlog_debug(
633 : "MESSAGE: ZEBRA_INTERFACE_VRF_UPDATE/ADD %s VRF Id %u -> %u",
634 : ifp->name, old_vrf_id, ifp->vrf->vrf_id);
635 :
636 0 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
637 : /* Do not send unsolicited messages to synchronous clients. */
638 0 : if (client->synchronous)
639 0 : continue;
640 :
641 : /* Need to add if the client is interested in the new VRF. */
642 0 : client->ifadd_cnt++;
643 0 : zsend_interface_add(client, ifp);
644 0 : zsend_interface_addresses(client, ifp);
645 : }
646 0 : }
647 :
648 0 : int zebra_add_import_table_entry(struct zebra_vrf *zvrf, struct route_node *rn,
649 : struct route_entry *re, const char *rmap_name)
650 : {
651 0 : struct route_entry *newre;
652 0 : struct route_entry *same;
653 0 : struct prefix p;
654 0 : struct nexthop_group *ng;
655 0 : route_map_result_t ret = RMAP_PERMITMATCH;
656 0 : afi_t afi;
657 :
658 0 : afi = family2afi(rn->p.family);
659 0 : if (rmap_name)
660 0 : ret = zebra_import_table_route_map_check(
661 0 : afi, re->type, re->instance, &rn->p,
662 0 : re->nhe->nhg.nexthop,
663 0 : zvrf->vrf->vrf_id, re->tag, rmap_name);
664 :
665 0 : if (ret != RMAP_PERMITMATCH) {
666 0 : UNSET_FLAG(re->flags, ZEBRA_FLAG_SELECTED);
667 0 : zebra_del_import_table_entry(zvrf, rn, re);
668 0 : return 0;
669 : }
670 :
671 0 : prefix_copy(&p, &rn->p);
672 :
673 0 : RNODE_FOREACH_RE (rn, same) {
674 0 : if (CHECK_FLAG(same->status, ROUTE_ENTRY_REMOVED))
675 0 : continue;
676 :
677 0 : if (same->type == re->type && same->instance == re->instance
678 0 : && same->table == re->table
679 0 : && same->type != ZEBRA_ROUTE_CONNECT)
680 : break;
681 : }
682 :
683 0 : if (same) {
684 0 : UNSET_FLAG(same->flags, ZEBRA_FLAG_SELECTED);
685 0 : zebra_del_import_table_entry(zvrf, rn, same);
686 : }
687 :
688 0 : newre = zebra_rib_route_entry_new(
689 : 0, ZEBRA_ROUTE_TABLE, re->table, re->flags, re->nhe_id,
690 : zvrf->table_id, re->metric, re->mtu,
691 0 : zebra_import_table_distance[afi][re->table], re->tag);
692 :
693 0 : ng = nexthop_group_new();
694 0 : copy_nexthops(&ng->nexthop, re->nhe->nhg.nexthop, NULL);
695 :
696 0 : rib_add_multipath(afi, SAFI_UNICAST, &p, NULL, newre, ng, false);
697 :
698 0 : return 0;
699 : }
700 :
701 0 : int zebra_del_import_table_entry(struct zebra_vrf *zvrf, struct route_node *rn,
702 : struct route_entry *re)
703 : {
704 0 : struct prefix p;
705 0 : afi_t afi;
706 :
707 0 : afi = family2afi(rn->p.family);
708 0 : prefix_copy(&p, &rn->p);
709 :
710 0 : rib_delete(afi, SAFI_UNICAST, zvrf->vrf->vrf_id, ZEBRA_ROUTE_TABLE,
711 0 : re->table, re->flags, &p, NULL, re->nhe->nhg.nexthop,
712 0 : re->nhe_id, zvrf->table_id, re->metric, re->distance,
713 : false);
714 :
715 0 : return 0;
716 : }
717 :
718 : /* Assuming no one calls this with the main routing table */
719 0 : int zebra_import_table(afi_t afi, vrf_id_t vrf_id, uint32_t table_id,
720 : uint32_t distance, const char *rmap_name, int add)
721 : {
722 0 : struct route_table *table;
723 0 : struct route_entry *re;
724 0 : struct route_node *rn;
725 0 : struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(vrf_id);
726 :
727 0 : if (!is_zebra_valid_kernel_table(table_id)
728 0 : || (table_id == RT_TABLE_MAIN))
729 : return -1;
730 :
731 0 : if (afi >= AFI_MAX)
732 : return -1;
733 :
734 0 : table = zebra_vrf_get_table_with_table_id(afi, SAFI_UNICAST, vrf_id,
735 : table_id);
736 0 : if (table == NULL) {
737 : return 0;
738 0 : } else if (IS_ZEBRA_DEBUG_RIB) {
739 0 : zlog_debug("%s routes from table %d",
740 : add ? "Importing" : "Unimporting", table_id);
741 : }
742 :
743 0 : if (add) {
744 0 : if (rmap_name)
745 0 : zebra_add_import_table_route_map(afi, rmap_name,
746 : table_id);
747 : else {
748 0 : rmap_name =
749 0 : zebra_get_import_table_route_map(afi, table_id);
750 0 : if (rmap_name) {
751 0 : zebra_del_import_table_route_map(afi, table_id);
752 0 : rmap_name = NULL;
753 : }
754 : }
755 :
756 0 : zebra_import_table_used[afi][table_id] = 1;
757 0 : zebra_import_table_distance[afi][table_id] = distance;
758 : } else {
759 0 : zebra_import_table_used[afi][table_id] = 0;
760 0 : zebra_import_table_distance[afi][table_id] =
761 : ZEBRA_TABLE_DISTANCE_DEFAULT;
762 :
763 0 : rmap_name = zebra_get_import_table_route_map(afi, table_id);
764 0 : if (rmap_name) {
765 0 : zebra_del_import_table_route_map(afi, table_id);
766 0 : rmap_name = NULL;
767 : }
768 : }
769 :
770 0 : for (rn = route_top(table); rn; rn = route_next(rn)) {
771 : /* For each entry in the non-default routing table,
772 : * add the entry in the main table
773 : */
774 0 : if (!rn->info)
775 0 : continue;
776 :
777 0 : RNODE_FOREACH_RE (rn, re) {
778 0 : if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED))
779 0 : continue;
780 : break;
781 : }
782 :
783 0 : if (!re)
784 0 : continue;
785 :
786 0 : if (((afi == AFI_IP) && (rn->p.family == AF_INET))
787 0 : || ((afi == AFI_IP6) && (rn->p.family == AF_INET6))) {
788 0 : if (add)
789 0 : zebra_add_import_table_entry(zvrf, rn, re,
790 : rmap_name);
791 : else
792 0 : zebra_del_import_table_entry(zvrf, rn, re);
793 : }
794 : }
795 : return 0;
796 : }
797 :
798 0 : int zebra_import_table_config(struct vty *vty, vrf_id_t vrf_id)
799 : {
800 0 : int i;
801 0 : afi_t afi;
802 0 : int write = 0;
803 0 : char afi_str[AFI_MAX][10] = {"", "ip", "ipv6", "ethernet"};
804 0 : const char *rmap_name;
805 :
806 0 : for (afi = AFI_IP; afi < AFI_MAX; afi++) {
807 0 : for (i = 1; i < ZEBRA_KERNEL_TABLE_MAX; i++) {
808 0 : if (!is_zebra_import_table_enabled(afi, vrf_id, i))
809 0 : continue;
810 :
811 0 : if (zebra_import_table_distance[afi][i]
812 : != ZEBRA_TABLE_DISTANCE_DEFAULT) {
813 0 : vty_out(vty, "%s import-table %d distance %d",
814 0 : afi_str[afi], i,
815 : zebra_import_table_distance[afi][i]);
816 : } else {
817 0 : vty_out(vty, "%s import-table %d", afi_str[afi],
818 : i);
819 : }
820 :
821 0 : rmap_name = zebra_get_import_table_route_map(afi, i);
822 0 : if (rmap_name)
823 0 : vty_out(vty, " route-map %s", rmap_name);
824 :
825 0 : vty_out(vty, "\n");
826 0 : write = 1;
827 : }
828 : }
829 :
830 0 : return write;
831 : }
832 :
833 0 : static void zebra_import_table_rm_update_vrf_afi(struct zebra_vrf *zvrf,
834 : afi_t afi, int table_id,
835 : const char *rmap)
836 : {
837 0 : struct route_table *table;
838 0 : struct route_entry *re;
839 0 : struct route_node *rn;
840 0 : const char *rmap_name;
841 :
842 0 : rmap_name = zebra_get_import_table_route_map(afi, table_id);
843 0 : if ((!rmap_name) || (strcmp(rmap_name, rmap) != 0))
844 : return;
845 :
846 0 : table = zebra_vrf_get_table_with_table_id(afi, SAFI_UNICAST,
847 0 : zvrf->vrf->vrf_id, table_id);
848 0 : if (!table) {
849 0 : if (IS_ZEBRA_DEBUG_RIB_DETAILED)
850 0 : zlog_debug("%s: Table id=%d not found", __func__,
851 : table_id);
852 0 : return;
853 : }
854 :
855 0 : for (rn = route_top(table); rn; rn = route_next(rn)) {
856 : /*
857 : * For each entry in the non-default routing table,
858 : * add the entry in the main table
859 : */
860 0 : if (!rn->info)
861 0 : continue;
862 :
863 0 : RNODE_FOREACH_RE (rn, re) {
864 0 : if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED))
865 0 : continue;
866 : break;
867 : }
868 :
869 0 : if (!re)
870 0 : continue;
871 :
872 0 : if (((afi == AFI_IP) && (rn->p.family == AF_INET))
873 0 : || ((afi == AFI_IP6) && (rn->p.family == AF_INET6)))
874 0 : zebra_add_import_table_entry(zvrf, rn, re, rmap_name);
875 : }
876 :
877 : return;
878 : }
879 :
880 0 : static void zebra_import_table_rm_update_vrf(struct zebra_vrf *zvrf,
881 : const char *rmap)
882 : {
883 0 : afi_t afi;
884 0 : int i;
885 :
886 0 : for (afi = AFI_IP; afi < AFI_MAX; afi++) {
887 0 : for (i = 1; i < ZEBRA_KERNEL_TABLE_MAX; i++) {
888 0 : if (!is_zebra_import_table_enabled(
889 0 : afi, zvrf->vrf->vrf_id, i))
890 0 : continue;
891 :
892 0 : zebra_import_table_rm_update_vrf_afi(zvrf, afi, i,
893 : rmap);
894 : }
895 : }
896 0 : }
897 :
898 0 : void zebra_import_table_rm_update(const char *rmap)
899 : {
900 0 : struct vrf *vrf;
901 0 : struct zebra_vrf *zvrf;
902 :
903 0 : RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
904 0 : zvrf = vrf->info;
905 :
906 0 : if (!zvrf)
907 0 : continue;
908 :
909 0 : zebra_import_table_rm_update_vrf(zvrf, rmap);
910 : }
911 0 : }
912 :
913 : /* Interface parameters update */
914 0 : void zebra_interface_parameters_update(struct interface *ifp)
915 : {
916 0 : struct listnode *node, *nnode;
917 0 : struct zserv *client;
918 :
919 0 : if (IS_ZEBRA_DEBUG_EVENT)
920 0 : zlog_debug("MESSAGE: ZEBRA_INTERFACE_LINK_PARAMS %s vrf %s(%u)",
921 : ifp->name, ifp->vrf->name, ifp->vrf->vrf_id);
922 :
923 0 : for (ALL_LIST_ELEMENTS(zrouter.client_list, node, nnode, client)) {
924 : /* Do not send unsolicited messages to synchronous clients. */
925 0 : if (client->synchronous)
926 0 : continue;
927 :
928 0 : zsend_interface_link_params(client, ifp);
929 : }
930 0 : }
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