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1 | /* zebra client | |
2 | * Copyright (C) 1997, 98, 99 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 "command.h" | |
24 | #include "stream.h" | |
25 | #include "network.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "sockunion.h" | |
29 | #include "zclient.h" | |
30 | #include "routemap.h" | |
31 | #include "thread.h" | |
32 | #include "queue.h" | |
33 | #include "memory.h" | |
34 | #include "lib/json.h" | |
35 | #include "lib/bfd.h" | |
36 | #include "filter.h" | |
37 | #include "mpls.h" | |
38 | #include "vxlan.h" | |
39 | #include "pbr.h" | |
40 | ||
41 | #include "bgpd/bgpd.h" | |
42 | #include "bgpd/bgp_route.h" | |
43 | #include "bgpd/bgp_attr.h" | |
44 | #include "bgpd/bgp_nexthop.h" | |
45 | #include "bgpd/bgp_zebra.h" | |
46 | #include "bgpd/bgp_fsm.h" | |
47 | #include "bgpd/bgp_debug.h" | |
48 | #include "bgpd/bgp_errors.h" | |
49 | #include "bgpd/bgp_mpath.h" | |
50 | #include "bgpd/bgp_nexthop.h" | |
51 | #include "bgpd/bgp_nht.h" | |
52 | #include "bgpd/bgp_bfd.h" | |
53 | #include "bgpd/bgp_label.h" | |
54 | #if ENABLE_BGP_VNC | |
55 | #include "bgpd/rfapi/rfapi_backend.h" | |
56 | #include "bgpd/rfapi/vnc_export_bgp.h" | |
57 | #endif | |
58 | #include "bgpd/bgp_evpn.h" | |
59 | #include "bgpd/bgp_mplsvpn.h" | |
60 | #include "bgpd/bgp_labelpool.h" | |
61 | #include "bgpd/bgp_pbr.h" | |
62 | #include "bgpd/bgp_evpn_private.h" | |
63 | #include "bgpd/bgp_mac.h" | |
64 | ||
65 | /* All information about zebra. */ | |
66 | struct zclient *zclient = NULL; | |
67 | ||
68 | /* Can we install into zebra? */ | |
69 | static inline int bgp_install_info_to_zebra(struct bgp *bgp) | |
70 | { | |
71 | if (zclient->sock <= 0) | |
72 | return 0; | |
73 | ||
74 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
75 | zlog_debug("%s: No zebra instance to talk to, not installing information", | |
76 | __PRETTY_FUNCTION__); | |
77 | return 0; | |
78 | } | |
79 | ||
80 | return 1; | |
81 | } | |
82 | ||
83 | int zclient_num_connects; | |
84 | ||
85 | /* Router-id update message from zebra. */ | |
86 | static int bgp_router_id_update(ZAPI_CALLBACK_ARGS) | |
87 | { | |
88 | struct prefix router_id; | |
89 | ||
90 | zebra_router_id_update_read(zclient->ibuf, &router_id); | |
91 | ||
92 | if (BGP_DEBUG(zebra, ZEBRA)) { | |
93 | char buf[PREFIX2STR_BUFFER]; | |
94 | prefix2str(&router_id, buf, sizeof(buf)); | |
95 | zlog_debug("Rx Router Id update VRF %u Id %s", vrf_id, buf); | |
96 | } | |
97 | ||
98 | bgp_router_id_zebra_bump(vrf_id, &router_id); | |
99 | return 0; | |
100 | } | |
101 | ||
102 | /* Nexthop update message from zebra. */ | |
103 | static int bgp_read_nexthop_update(ZAPI_CALLBACK_ARGS) | |
104 | { | |
105 | bgp_parse_nexthop_update(cmd, vrf_id); | |
106 | return 0; | |
107 | } | |
108 | ||
109 | static int bgp_read_import_check_update(ZAPI_CALLBACK_ARGS) | |
110 | { | |
111 | bgp_parse_nexthop_update(cmd, vrf_id); | |
112 | return 0; | |
113 | } | |
114 | ||
115 | /* Set or clear interface on which unnumbered neighbor is configured. This | |
116 | * would in turn cause BGP to initiate or turn off IPv6 RAs on this | |
117 | * interface. | |
118 | */ | |
119 | static void bgp_update_interface_nbrs(struct bgp *bgp, struct interface *ifp, | |
120 | struct interface *upd_ifp) | |
121 | { | |
122 | struct listnode *node, *nnode; | |
123 | struct peer *peer; | |
124 | ||
125 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
126 | if (peer->conf_if && (strcmp(peer->conf_if, ifp->name) == 0)) { | |
127 | if (upd_ifp) { | |
128 | peer->ifp = upd_ifp; | |
129 | bgp_zebra_initiate_radv(bgp, peer); | |
130 | } else { | |
131 | bgp_zebra_terminate_radv(bgp, peer); | |
132 | peer->ifp = upd_ifp; | |
133 | } | |
134 | } | |
135 | } | |
136 | } | |
137 | ||
138 | static int bgp_read_fec_update(int command, struct zclient *zclient, | |
139 | zebra_size_t length) | |
140 | { | |
141 | bgp_parse_fec_update(); | |
142 | return 0; | |
143 | } | |
144 | ||
145 | static void bgp_start_interface_nbrs(struct bgp *bgp, struct interface *ifp) | |
146 | { | |
147 | struct listnode *node, *nnode; | |
148 | struct peer *peer; | |
149 | ||
150 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
151 | if (peer->conf_if && (strcmp(peer->conf_if, ifp->name) == 0) | |
152 | && peer->status != Established) { | |
153 | if (peer_active(peer)) | |
154 | BGP_EVENT_ADD(peer, BGP_Stop); | |
155 | BGP_EVENT_ADD(peer, BGP_Start); | |
156 | } | |
157 | } | |
158 | } | |
159 | ||
160 | static void bgp_nbr_connected_add(struct bgp *bgp, struct nbr_connected *ifc) | |
161 | { | |
162 | struct listnode *node; | |
163 | struct connected *connected; | |
164 | struct interface *ifp; | |
165 | struct prefix *p; | |
166 | ||
167 | /* Kick-off the FSM for any relevant peers only if there is a | |
168 | * valid local address on the interface. | |
169 | */ | |
170 | ifp = ifc->ifp; | |
171 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { | |
172 | p = connected->address; | |
173 | if (p->family == AF_INET6 | |
174 | && IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6)) | |
175 | break; | |
176 | } | |
177 | if (!connected) | |
178 | return; | |
179 | ||
180 | bgp_start_interface_nbrs(bgp, ifp); | |
181 | } | |
182 | ||
183 | static void bgp_nbr_connected_delete(struct bgp *bgp, struct nbr_connected *ifc, | |
184 | int del) | |
185 | { | |
186 | struct listnode *node, *nnode; | |
187 | struct peer *peer; | |
188 | struct interface *ifp; | |
189 | ||
190 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
191 | if (peer->conf_if | |
192 | && (strcmp(peer->conf_if, ifc->ifp->name) == 0)) { | |
193 | peer->last_reset = PEER_DOWN_NBR_ADDR_DEL; | |
194 | BGP_EVENT_ADD(peer, BGP_Stop); | |
195 | } | |
196 | } | |
197 | /* Free neighbor also, if we're asked to. */ | |
198 | if (del) { | |
199 | ifp = ifc->ifp; | |
200 | listnode_delete(ifp->nbr_connected, ifc); | |
201 | nbr_connected_free(ifc); | |
202 | } | |
203 | } | |
204 | ||
205 | static int bgp_ifp_destroy(struct interface *ifp) | |
206 | { | |
207 | struct bgp *bgp; | |
208 | ||
209 | bgp = bgp_lookup_by_vrf_id(ifp->vrf_id); | |
210 | ||
211 | if (BGP_DEBUG(zebra, ZEBRA)) | |
212 | zlog_debug("Rx Intf del VRF %u IF %s", bgp->vrf_id, ifp->name); | |
213 | ||
214 | if (bgp) | |
215 | bgp_update_interface_nbrs(bgp, ifp, NULL); | |
216 | ||
217 | bgp_mac_del_mac_entry(ifp); | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
222 | static int bgp_ifp_up(struct interface *ifp) | |
223 | { | |
224 | struct connected *c; | |
225 | struct nbr_connected *nc; | |
226 | struct listnode *node, *nnode; | |
227 | struct bgp *bgp; | |
228 | ||
229 | bgp = bgp_lookup_by_vrf_id(ifp->vrf_id); | |
230 | ||
231 | bgp_mac_add_mac_entry(ifp); | |
232 | ||
233 | if (BGP_DEBUG(zebra, ZEBRA)) | |
234 | zlog_debug("Rx Intf up VRF %u IF %s", ifp->vrf_id, ifp->name); | |
235 | ||
236 | if (!bgp) | |
237 | return 0; | |
238 | ||
239 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c)) | |
240 | bgp_connected_add(bgp, c); | |
241 | ||
242 | for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc)) | |
243 | bgp_nbr_connected_add(bgp, nc); | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
248 | static int bgp_ifp_down(struct interface *ifp) | |
249 | { | |
250 | struct connected *c; | |
251 | struct nbr_connected *nc; | |
252 | struct listnode *node, *nnode; | |
253 | struct bgp *bgp; | |
254 | struct peer *peer; | |
255 | ||
256 | bgp = bgp_lookup_by_vrf_id(ifp->vrf_id); | |
257 | ||
258 | bgp_mac_del_mac_entry(ifp); | |
259 | ||
260 | if (BGP_DEBUG(zebra, ZEBRA)) | |
261 | zlog_debug("Rx Intf down VRF %u IF %s", ifp->vrf_id, ifp->name); | |
262 | ||
263 | if (!bgp) | |
264 | return 0; | |
265 | ||
266 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c)) | |
267 | bgp_connected_delete(bgp, c); | |
268 | ||
269 | for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc)) | |
270 | bgp_nbr_connected_delete(bgp, nc, 1); | |
271 | ||
272 | /* Fast external-failover */ | |
273 | if (!CHECK_FLAG(bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) { | |
274 | ||
275 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
276 | #if defined(HAVE_CUMULUS) | |
277 | /* Take down directly connected EBGP peers as well as | |
278 | * 1-hop BFD | |
279 | * tracked (directly connected) IBGP peers. | |
280 | */ | |
281 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1) | |
282 | && (!peer->bfd_info | |
283 | || bgp_bfd_is_peer_multihop(peer))) | |
284 | #else | |
285 | /* Take down directly connected EBGP peers */ | |
286 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) | |
287 | #endif | |
288 | continue; | |
289 | ||
290 | if (ifp == peer->nexthop.ifp) { | |
291 | BGP_EVENT_ADD(peer, BGP_Stop); | |
292 | peer->last_reset = PEER_DOWN_IF_DOWN; | |
293 | } | |
294 | } | |
295 | } | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | static int bgp_interface_address_add(ZAPI_CALLBACK_ARGS) | |
301 | { | |
302 | struct connected *ifc; | |
303 | struct bgp *bgp; | |
304 | ||
305 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
306 | ||
307 | ifc = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); | |
308 | ||
309 | if (ifc == NULL) | |
310 | return 0; | |
311 | ||
312 | if (bgp_debug_zebra(ifc->address)) { | |
313 | char buf[PREFIX2STR_BUFFER]; | |
314 | prefix2str(ifc->address, buf, sizeof(buf)); | |
315 | zlog_debug("Rx Intf address add VRF %u IF %s addr %s", vrf_id, | |
316 | ifc->ifp->name, buf); | |
317 | } | |
318 | ||
319 | if (!bgp) | |
320 | return 0; | |
321 | ||
322 | if (if_is_operative(ifc->ifp)) { | |
323 | bgp_connected_add(bgp, ifc); | |
324 | ||
325 | /* If we have learnt of any neighbors on this interface, | |
326 | * check to kick off any BGP interface-based neighbors, | |
327 | * but only if this is a link-local address. | |
328 | */ | |
329 | if (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6) | |
330 | && !list_isempty(ifc->ifp->nbr_connected)) | |
331 | bgp_start_interface_nbrs(bgp, ifc->ifp); | |
332 | } | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | static int bgp_interface_address_delete(ZAPI_CALLBACK_ARGS) | |
338 | { | |
339 | struct connected *ifc; | |
340 | struct bgp *bgp; | |
341 | ||
342 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
343 | ||
344 | ifc = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); | |
345 | ||
346 | if (ifc == NULL) | |
347 | return 0; | |
348 | ||
349 | if (bgp_debug_zebra(ifc->address)) { | |
350 | char buf[PREFIX2STR_BUFFER]; | |
351 | prefix2str(ifc->address, buf, sizeof(buf)); | |
352 | zlog_debug("Rx Intf address del VRF %u IF %s addr %s", vrf_id, | |
353 | ifc->ifp->name, buf); | |
354 | } | |
355 | ||
356 | if (bgp && if_is_operative(ifc->ifp)) { | |
357 | bgp_connected_delete(bgp, ifc); | |
358 | } | |
359 | ||
360 | connected_free(ifc); | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | static int bgp_interface_nbr_address_add(ZAPI_CALLBACK_ARGS) | |
366 | { | |
367 | struct nbr_connected *ifc = NULL; | |
368 | struct bgp *bgp; | |
369 | ||
370 | ifc = zebra_interface_nbr_address_read(cmd, zclient->ibuf, vrf_id); | |
371 | ||
372 | if (ifc == NULL) | |
373 | return 0; | |
374 | ||
375 | if (bgp_debug_zebra(ifc->address)) { | |
376 | char buf[PREFIX2STR_BUFFER]; | |
377 | prefix2str(ifc->address, buf, sizeof(buf)); | |
378 | zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %s", vrf_id, | |
379 | ifc->ifp->name, buf); | |
380 | } | |
381 | ||
382 | if (if_is_operative(ifc->ifp)) { | |
383 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
384 | if (bgp) | |
385 | bgp_nbr_connected_add(bgp, ifc); | |
386 | } | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | static int bgp_interface_nbr_address_delete(ZAPI_CALLBACK_ARGS) | |
392 | { | |
393 | struct nbr_connected *ifc = NULL; | |
394 | struct bgp *bgp; | |
395 | ||
396 | ifc = zebra_interface_nbr_address_read(cmd, zclient->ibuf, vrf_id); | |
397 | ||
398 | if (ifc == NULL) | |
399 | return 0; | |
400 | ||
401 | if (bgp_debug_zebra(ifc->address)) { | |
402 | char buf[PREFIX2STR_BUFFER]; | |
403 | prefix2str(ifc->address, buf, sizeof(buf)); | |
404 | zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %s", vrf_id, | |
405 | ifc->ifp->name, buf); | |
406 | } | |
407 | ||
408 | if (if_is_operative(ifc->ifp)) { | |
409 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
410 | if (bgp) | |
411 | bgp_nbr_connected_delete(bgp, ifc, 0); | |
412 | } | |
413 | ||
414 | nbr_connected_free(ifc); | |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
419 | /* VRF update for an interface. */ | |
420 | static int bgp_interface_vrf_update(ZAPI_CALLBACK_ARGS) | |
421 | { | |
422 | struct interface *ifp; | |
423 | vrf_id_t new_vrf_id; | |
424 | struct connected *c; | |
425 | struct nbr_connected *nc; | |
426 | struct listnode *node, *nnode; | |
427 | struct bgp *bgp; | |
428 | struct peer *peer; | |
429 | ||
430 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
431 | &new_vrf_id); | |
432 | if (!ifp) | |
433 | return 0; | |
434 | ||
435 | if (BGP_DEBUG(zebra, ZEBRA) && ifp) | |
436 | zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", vrf_id, | |
437 | ifp->name, new_vrf_id); | |
438 | ||
439 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
440 | ||
441 | if (bgp) { | |
442 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c)) | |
443 | bgp_connected_delete(bgp, c); | |
444 | ||
445 | for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc)) | |
446 | bgp_nbr_connected_delete(bgp, nc, 1); | |
447 | ||
448 | /* Fast external-failover */ | |
449 | if (!CHECK_FLAG(bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) { | |
450 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
451 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) | |
452 | continue; | |
453 | ||
454 | if (ifp == peer->nexthop.ifp) | |
455 | BGP_EVENT_ADD(peer, BGP_Stop); | |
456 | } | |
457 | } | |
458 | } | |
459 | ||
460 | if_update_to_new_vrf(ifp, new_vrf_id); | |
461 | ||
462 | bgp = bgp_lookup_by_vrf_id(new_vrf_id); | |
463 | if (!bgp) | |
464 | return 0; | |
465 | ||
466 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c)) | |
467 | bgp_connected_add(bgp, c); | |
468 | ||
469 | for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc)) | |
470 | bgp_nbr_connected_add(bgp, nc); | |
471 | return 0; | |
472 | } | |
473 | ||
474 | /* Zebra route add and delete treatment. */ | |
475 | static int zebra_read_route(ZAPI_CALLBACK_ARGS) | |
476 | { | |
477 | enum nexthop_types_t nhtype; | |
478 | struct zapi_route api; | |
479 | union g_addr nexthop; | |
480 | ifindex_t ifindex; | |
481 | int add, i; | |
482 | struct bgp *bgp; | |
483 | ||
484 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
485 | if (!bgp) | |
486 | return 0; | |
487 | ||
488 | if (zapi_route_decode(zclient->ibuf, &api) < 0) | |
489 | return -1; | |
490 | ||
491 | /* we completely ignore srcdest routes for now. */ | |
492 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
493 | return 0; | |
494 | ||
495 | /* ignore link-local address. */ | |
496 | if (api.prefix.family == AF_INET6 | |
497 | && IN6_IS_ADDR_LINKLOCAL(&api.prefix.u.prefix6)) | |
498 | return 0; | |
499 | ||
500 | nexthop = api.nexthops[0].gate; | |
501 | ifindex = api.nexthops[0].ifindex; | |
502 | nhtype = api.nexthops[0].type; | |
503 | ||
504 | add = (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD); | |
505 | if (add) { | |
506 | /* | |
507 | * The ADD message is actually an UPDATE and there is no | |
508 | * explicit DEL | |
509 | * for a prior redistributed route, if any. So, perform an | |
510 | * implicit | |
511 | * DEL processing for the same redistributed route from any | |
512 | * other | |
513 | * source type. | |
514 | */ | |
515 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) { | |
516 | if (i != api.type) | |
517 | bgp_redistribute_delete(bgp, &api.prefix, i, | |
518 | api.instance); | |
519 | } | |
520 | ||
521 | /* Now perform the add/update. */ | |
522 | bgp_redistribute_add(bgp, &api.prefix, &nexthop, ifindex, | |
523 | nhtype, api.metric, api.type, api.instance, | |
524 | api.tag); | |
525 | } else { | |
526 | bgp_redistribute_delete(bgp, &api.prefix, api.type, | |
527 | api.instance); | |
528 | } | |
529 | ||
530 | if (bgp_debug_zebra(&api.prefix)) { | |
531 | char buf[2][PREFIX_STRLEN]; | |
532 | ||
533 | prefix2str(&api.prefix, buf[0], sizeof(buf[0])); | |
534 | if (add) { | |
535 | inet_ntop(api.prefix.family, &nexthop, buf[1], | |
536 | sizeof(buf[1])); | |
537 | zlog_debug( | |
538 | "Rx route ADD VRF %u %s[%d] %s nexthop %s (type %d if %u) metric %u tag %" ROUTE_TAG_PRI, | |
539 | vrf_id, zebra_route_string(api.type), | |
540 | api.instance, buf[0], buf[1], nhtype, | |
541 | ifindex, api.metric, api.tag); | |
542 | } else { | |
543 | zlog_debug( | |
544 | "Rx route DEL VRF %u %s[%d] %s", | |
545 | vrf_id, zebra_route_string(api.type), | |
546 | api.instance, buf[0]); | |
547 | } | |
548 | } | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | struct interface *if_lookup_by_ipv4(struct in_addr *addr, vrf_id_t vrf_id) | |
554 | { | |
555 | struct vrf *vrf; | |
556 | struct listnode *cnode; | |
557 | struct interface *ifp; | |
558 | struct connected *connected; | |
559 | struct prefix_ipv4 p; | |
560 | struct prefix *cp; | |
561 | ||
562 | vrf = vrf_lookup_by_id(vrf_id); | |
563 | if (!vrf) | |
564 | return NULL; | |
565 | ||
566 | p.family = AF_INET; | |
567 | p.prefix = *addr; | |
568 | p.prefixlen = IPV4_MAX_BITLEN; | |
569 | ||
570 | FOR_ALL_INTERFACES (vrf, ifp) { | |
571 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
572 | cp = connected->address; | |
573 | ||
574 | if (cp->family == AF_INET) | |
575 | if (prefix_match(cp, (struct prefix *)&p)) | |
576 | return ifp; | |
577 | } | |
578 | } | |
579 | return NULL; | |
580 | } | |
581 | ||
582 | struct interface *if_lookup_by_ipv4_exact(struct in_addr *addr, vrf_id_t vrf_id) | |
583 | { | |
584 | struct vrf *vrf; | |
585 | struct listnode *cnode; | |
586 | struct interface *ifp; | |
587 | struct connected *connected; | |
588 | struct prefix *cp; | |
589 | ||
590 | vrf = vrf_lookup_by_id(vrf_id); | |
591 | if (!vrf) | |
592 | return NULL; | |
593 | ||
594 | FOR_ALL_INTERFACES (vrf, ifp) { | |
595 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
596 | cp = connected->address; | |
597 | ||
598 | if (cp->family == AF_INET) | |
599 | if (IPV4_ADDR_SAME(&cp->u.prefix4, addr)) | |
600 | return ifp; | |
601 | } | |
602 | } | |
603 | return NULL; | |
604 | } | |
605 | ||
606 | struct interface *if_lookup_by_ipv6(struct in6_addr *addr, ifindex_t ifindex, | |
607 | vrf_id_t vrf_id) | |
608 | { | |
609 | struct vrf *vrf; | |
610 | struct listnode *cnode; | |
611 | struct interface *ifp; | |
612 | struct connected *connected; | |
613 | struct prefix_ipv6 p; | |
614 | struct prefix *cp; | |
615 | ||
616 | vrf = vrf_lookup_by_id(vrf_id); | |
617 | if (!vrf) | |
618 | return NULL; | |
619 | ||
620 | p.family = AF_INET6; | |
621 | p.prefix = *addr; | |
622 | p.prefixlen = IPV6_MAX_BITLEN; | |
623 | ||
624 | FOR_ALL_INTERFACES (vrf, ifp) { | |
625 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
626 | cp = connected->address; | |
627 | ||
628 | if (cp->family == AF_INET6) | |
629 | if (prefix_match(cp, (struct prefix *)&p)) { | |
630 | if (IN6_IS_ADDR_LINKLOCAL( | |
631 | &cp->u.prefix6)) { | |
632 | if (ifindex == ifp->ifindex) | |
633 | return ifp; | |
634 | } else | |
635 | return ifp; | |
636 | } | |
637 | } | |
638 | } | |
639 | return NULL; | |
640 | } | |
641 | ||
642 | struct interface *if_lookup_by_ipv6_exact(struct in6_addr *addr, | |
643 | ifindex_t ifindex, vrf_id_t vrf_id) | |
644 | { | |
645 | struct vrf *vrf; | |
646 | struct listnode *cnode; | |
647 | struct interface *ifp; | |
648 | struct connected *connected; | |
649 | struct prefix *cp; | |
650 | ||
651 | vrf = vrf_lookup_by_id(vrf_id); | |
652 | if (!vrf) | |
653 | return NULL; | |
654 | ||
655 | FOR_ALL_INTERFACES (vrf, ifp) { | |
656 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
657 | cp = connected->address; | |
658 | ||
659 | if (cp->family == AF_INET6) | |
660 | if (IPV6_ADDR_SAME(&cp->u.prefix6, addr)) { | |
661 | if (IN6_IS_ADDR_LINKLOCAL( | |
662 | &cp->u.prefix6)) { | |
663 | if (ifindex == ifp->ifindex) | |
664 | return ifp; | |
665 | } else | |
666 | return ifp; | |
667 | } | |
668 | } | |
669 | } | |
670 | return NULL; | |
671 | } | |
672 | ||
673 | static int if_get_ipv6_global(struct interface *ifp, struct in6_addr *addr) | |
674 | { | |
675 | struct listnode *cnode; | |
676 | struct connected *connected; | |
677 | struct prefix *cp; | |
678 | ||
679 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
680 | cp = connected->address; | |
681 | ||
682 | if (cp->family == AF_INET6) | |
683 | if (!IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) { | |
684 | memcpy(addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
685 | return 1; | |
686 | } | |
687 | } | |
688 | return 0; | |
689 | } | |
690 | ||
691 | static int if_get_ipv6_local(struct interface *ifp, struct in6_addr *addr) | |
692 | { | |
693 | struct listnode *cnode; | |
694 | struct connected *connected; | |
695 | struct prefix *cp; | |
696 | ||
697 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
698 | cp = connected->address; | |
699 | ||
700 | if (cp->family == AF_INET6) | |
701 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) { | |
702 | memcpy(addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
703 | return 1; | |
704 | } | |
705 | } | |
706 | return 0; | |
707 | } | |
708 | ||
709 | static int if_get_ipv4_address(struct interface *ifp, struct in_addr *addr) | |
710 | { | |
711 | struct listnode *cnode; | |
712 | struct connected *connected; | |
713 | struct prefix *cp; | |
714 | ||
715 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
716 | cp = connected->address; | |
717 | if ((cp->family == AF_INET) | |
718 | && !ipv4_martian(&(cp->u.prefix4))) { | |
719 | *addr = cp->u.prefix4; | |
720 | return 1; | |
721 | } | |
722 | } | |
723 | return 0; | |
724 | } | |
725 | ||
726 | ||
727 | bool bgp_zebra_nexthop_set(union sockunion *local, union sockunion *remote, | |
728 | struct bgp_nexthop *nexthop, struct peer *peer) | |
729 | { | |
730 | int ret = 0; | |
731 | struct interface *ifp = NULL; | |
732 | ||
733 | memset(nexthop, 0, sizeof(struct bgp_nexthop)); | |
734 | ||
735 | if (!local) | |
736 | return false; | |
737 | if (!remote) | |
738 | return false; | |
739 | ||
740 | if (local->sa.sa_family == AF_INET) { | |
741 | nexthop->v4 = local->sin.sin_addr; | |
742 | if (peer->update_if) | |
743 | ifp = if_lookup_by_name(peer->update_if, | |
744 | peer->bgp->vrf_id); | |
745 | else | |
746 | ifp = if_lookup_by_ipv4_exact(&local->sin.sin_addr, | |
747 | peer->bgp->vrf_id); | |
748 | } | |
749 | if (local->sa.sa_family == AF_INET6) { | |
750 | memcpy(&nexthop->v6_global, &local->sin6.sin6_addr, IPV6_MAX_BYTELEN); | |
751 | if (IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)) { | |
752 | if (peer->conf_if || peer->ifname) | |
753 | ifp = if_lookup_by_name(peer->conf_if | |
754 | ? peer->conf_if | |
755 | : peer->ifname, | |
756 | peer->bgp->vrf_id); | |
757 | } else if (peer->update_if) | |
758 | ifp = if_lookup_by_name(peer->update_if, | |
759 | peer->bgp->vrf_id); | |
760 | else | |
761 | ifp = if_lookup_by_ipv6_exact(&local->sin6.sin6_addr, | |
762 | local->sin6.sin6_scope_id, | |
763 | peer->bgp->vrf_id); | |
764 | } | |
765 | ||
766 | if (!ifp) { | |
767 | /* | |
768 | * BGP views do not currently get proper data | |
769 | * from zebra( when attached ) to be able to | |
770 | * properly resolve nexthops, so give this | |
771 | * instance type a pass. | |
772 | */ | |
773 | if (peer->bgp->inst_type == BGP_INSTANCE_TYPE_VIEW) | |
774 | return true; | |
775 | /* | |
776 | * If we have no interface data but we have established | |
777 | * some connection w/ zebra than something has gone | |
778 | * terribly terribly wrong here, so say this failed | |
779 | * If we do not any zebra connection then not | |
780 | * having a ifp pointer is ok. | |
781 | */ | |
782 | return zclient_num_connects ? false : true; | |
783 | } | |
784 | ||
785 | nexthop->ifp = ifp; | |
786 | ||
787 | /* IPv4 connection, fetch and store IPv6 local address(es) if any. */ | |
788 | if (local->sa.sa_family == AF_INET) { | |
789 | /* IPv6 nexthop*/ | |
790 | ret = if_get_ipv6_global(ifp, &nexthop->v6_global); | |
791 | ||
792 | if (!ret) { | |
793 | /* There is no global nexthop. Use link-local address as | |
794 | * both the | |
795 | * global and link-local nexthop. In this scenario, the | |
796 | * expectation | |
797 | * for interop is that the network admin would use a | |
798 | * route-map to | |
799 | * specify the global IPv6 nexthop. | |
800 | */ | |
801 | if_get_ipv6_local(ifp, &nexthop->v6_global); | |
802 | memcpy(&nexthop->v6_local, &nexthop->v6_global, | |
803 | IPV6_MAX_BYTELEN); | |
804 | } else | |
805 | if_get_ipv6_local(ifp, &nexthop->v6_local); | |
806 | ||
807 | if (if_lookup_by_ipv4(&remote->sin.sin_addr, peer->bgp->vrf_id)) | |
808 | peer->shared_network = 1; | |
809 | else | |
810 | peer->shared_network = 0; | |
811 | } | |
812 | ||
813 | /* IPv6 connection, fetch and store IPv4 local address if any. */ | |
814 | if (local->sa.sa_family == AF_INET6) { | |
815 | struct interface *direct = NULL; | |
816 | ||
817 | /* IPv4 nexthop. */ | |
818 | ret = if_get_ipv4_address(ifp, &nexthop->v4); | |
819 | if (!ret && peer->local_id.s_addr) | |
820 | nexthop->v4 = peer->local_id; | |
821 | ||
822 | /* Global address*/ | |
823 | if (!IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)) { | |
824 | memcpy(&nexthop->v6_global, &local->sin6.sin6_addr, | |
825 | IPV6_MAX_BYTELEN); | |
826 | ||
827 | /* If directory connected set link-local address. */ | |
828 | direct = if_lookup_by_ipv6(&remote->sin6.sin6_addr, | |
829 | remote->sin6.sin6_scope_id, | |
830 | peer->bgp->vrf_id); | |
831 | if (direct) | |
832 | if_get_ipv6_local(ifp, &nexthop->v6_local); | |
833 | } else | |
834 | /* Link-local address. */ | |
835 | { | |
836 | ret = if_get_ipv6_global(ifp, &nexthop->v6_global); | |
837 | ||
838 | /* If there is no global address. Set link-local | |
839 | address as | |
840 | global. I know this break RFC specification... */ | |
841 | /* In this scenario, the expectation for interop is that | |
842 | * the | |
843 | * network admin would use a route-map to specify the | |
844 | * global | |
845 | * IPv6 nexthop. | |
846 | */ | |
847 | if (!ret) | |
848 | memcpy(&nexthop->v6_global, | |
849 | &local->sin6.sin6_addr, | |
850 | IPV6_MAX_BYTELEN); | |
851 | /* Always set the link-local address */ | |
852 | memcpy(&nexthop->v6_local, &local->sin6.sin6_addr, | |
853 | IPV6_MAX_BYTELEN); | |
854 | } | |
855 | ||
856 | if (IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr) | |
857 | || if_lookup_by_ipv6(&remote->sin6.sin6_addr, | |
858 | remote->sin6.sin6_scope_id, | |
859 | peer->bgp->vrf_id)) | |
860 | peer->shared_network = 1; | |
861 | else | |
862 | peer->shared_network = 0; | |
863 | } | |
864 | ||
865 | /* KAME stack specific treatment. */ | |
866 | #ifdef KAME | |
867 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->v6_global) | |
868 | && IN6_LINKLOCAL_IFINDEX(nexthop->v6_global)) { | |
869 | SET_IN6_LINKLOCAL_IFINDEX(nexthop->v6_global, 0); | |
870 | } | |
871 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->v6_local) | |
872 | && IN6_LINKLOCAL_IFINDEX(nexthop->v6_local)) { | |
873 | SET_IN6_LINKLOCAL_IFINDEX(nexthop->v6_local, 0); | |
874 | } | |
875 | #endif /* KAME */ | |
876 | ||
877 | /* If we have identified the local interface, there is no error for now. | |
878 | */ | |
879 | return true; | |
880 | } | |
881 | ||
882 | static struct in6_addr * | |
883 | bgp_path_info_to_ipv6_nexthop(struct bgp_path_info *path, ifindex_t *ifindex) | |
884 | { | |
885 | struct in6_addr *nexthop = NULL; | |
886 | ||
887 | /* Only global address nexthop exists. */ | |
888 | if (path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL | |
889 | || path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_VPNV6_GLOBAL) { | |
890 | nexthop = &path->attr->mp_nexthop_global; | |
891 | if (IN6_IS_ADDR_LINKLOCAL(nexthop)) | |
892 | *ifindex = path->attr->nh_ifindex; | |
893 | } | |
894 | ||
895 | /* If both global and link-local address present. */ | |
896 | if (path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL | |
897 | || path->attr->mp_nexthop_len | |
898 | == BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL) { | |
899 | /* Check if route-map is set to prefer global over link-local */ | |
900 | if (path->attr->mp_nexthop_prefer_global) { | |
901 | nexthop = &path->attr->mp_nexthop_global; | |
902 | if (IN6_IS_ADDR_LINKLOCAL(nexthop)) | |
903 | *ifindex = path->attr->nh_ifindex; | |
904 | } else { | |
905 | /* Workaround for Cisco's nexthop bug. */ | |
906 | if (IN6_IS_ADDR_UNSPECIFIED( | |
907 | &path->attr->mp_nexthop_global) | |
908 | && path->peer->su_remote->sa.sa_family | |
909 | == AF_INET6) { | |
910 | nexthop = | |
911 | &path->peer->su_remote->sin6.sin6_addr; | |
912 | if (IN6_IS_ADDR_LINKLOCAL(nexthop)) | |
913 | *ifindex = path->peer->nexthop.ifp | |
914 | ->ifindex; | |
915 | } else { | |
916 | nexthop = &path->attr->mp_nexthop_local; | |
917 | if (IN6_IS_ADDR_LINKLOCAL(nexthop)) | |
918 | *ifindex = path->attr->nh_lla_ifindex; | |
919 | } | |
920 | } | |
921 | } | |
922 | ||
923 | return nexthop; | |
924 | } | |
925 | ||
926 | static int bgp_table_map_apply(struct route_map *map, struct prefix *p, | |
927 | struct bgp_path_info *path) | |
928 | { | |
929 | route_map_result_t ret; | |
930 | ||
931 | ret = route_map_apply(map, p, RMAP_BGP, path); | |
932 | bgp_attr_flush(path->attr); | |
933 | ||
934 | if (ret != RMAP_DENYMATCH) | |
935 | return 1; | |
936 | ||
937 | if (bgp_debug_zebra(p)) { | |
938 | if (p->family == AF_INET) { | |
939 | char buf[2][INET_ADDRSTRLEN]; | |
940 | zlog_debug( | |
941 | "Zebra rmap deny: IPv4 route %s/%d nexthop %s", | |
942 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], | |
943 | sizeof(buf[0])), | |
944 | p->prefixlen, | |
945 | inet_ntop(AF_INET, &path->attr->nexthop, buf[1], | |
946 | sizeof(buf[1]))); | |
947 | } | |
948 | if (p->family == AF_INET6) { | |
949 | char buf[2][INET6_ADDRSTRLEN]; | |
950 | ifindex_t ifindex; | |
951 | struct in6_addr *nexthop; | |
952 | ||
953 | nexthop = bgp_path_info_to_ipv6_nexthop(path, &ifindex); | |
954 | zlog_debug( | |
955 | "Zebra rmap deny: IPv6 route %s/%d nexthop %s", | |
956 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], | |
957 | sizeof(buf[0])), | |
958 | p->prefixlen, | |
959 | inet_ntop(AF_INET6, nexthop, | |
960 | buf[1], sizeof(buf[1]))); | |
961 | } | |
962 | } | |
963 | return 0; | |
964 | } | |
965 | ||
966 | static struct thread *bgp_tm_thread_connect; | |
967 | static bool bgp_tm_status_connected; | |
968 | static bool bgp_tm_chunk_obtained; | |
969 | #define BGP_FLOWSPEC_TABLE_CHUNK 100000 | |
970 | static uint32_t bgp_tm_min, bgp_tm_max, bgp_tm_chunk_size; | |
971 | struct bgp *bgp_tm_bgp; | |
972 | ||
973 | static int bgp_zebra_tm_connect(struct thread *t) | |
974 | { | |
975 | struct zclient *zclient; | |
976 | int delay = 10, ret = 0; | |
977 | ||
978 | zclient = THREAD_ARG(t); | |
979 | if (bgp_tm_status_connected && zclient->sock > 0) | |
980 | delay = 60; | |
981 | else { | |
982 | bgp_tm_status_connected = false; | |
983 | ret = tm_table_manager_connect(zclient); | |
984 | } | |
985 | if (ret < 0) { | |
986 | zlog_info("Error connecting to table manager!"); | |
987 | bgp_tm_status_connected = false; | |
988 | } else { | |
989 | if (!bgp_tm_status_connected) | |
990 | zlog_debug("Connecting to table manager. Success"); | |
991 | bgp_tm_status_connected = true; | |
992 | if (!bgp_tm_chunk_obtained) { | |
993 | if (bgp_zebra_get_table_range(bgp_tm_chunk_size, | |
994 | &bgp_tm_min, | |
995 | &bgp_tm_max) >= 0) { | |
996 | bgp_tm_chunk_obtained = true; | |
997 | /* parse non installed entries */ | |
998 | bgp_zebra_announce_table(bgp_tm_bgp, AFI_IP, SAFI_FLOWSPEC); | |
999 | } | |
1000 | } | |
1001 | } | |
1002 | thread_add_timer(bm->master, bgp_zebra_tm_connect, zclient, delay, | |
1003 | &bgp_tm_thread_connect); | |
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | bool bgp_zebra_tm_chunk_obtained(void) | |
1008 | { | |
1009 | return bgp_tm_chunk_obtained; | |
1010 | } | |
1011 | ||
1012 | uint32_t bgp_zebra_tm_get_id(void) | |
1013 | { | |
1014 | static int table_id; | |
1015 | ||
1016 | if (!bgp_tm_chunk_obtained) | |
1017 | return ++table_id; | |
1018 | return bgp_tm_min++; | |
1019 | } | |
1020 | ||
1021 | void bgp_zebra_init_tm_connect(struct bgp *bgp) | |
1022 | { | |
1023 | int delay = 1; | |
1024 | ||
1025 | /* if already set, do nothing | |
1026 | */ | |
1027 | if (bgp_tm_thread_connect != NULL) | |
1028 | return; | |
1029 | bgp_tm_status_connected = false; | |
1030 | bgp_tm_chunk_obtained = false; | |
1031 | bgp_tm_min = bgp_tm_max = 0; | |
1032 | bgp_tm_chunk_size = BGP_FLOWSPEC_TABLE_CHUNK; | |
1033 | bgp_tm_bgp = bgp; | |
1034 | thread_add_timer(bm->master, bgp_zebra_tm_connect, zclient, delay, | |
1035 | &bgp_tm_thread_connect); | |
1036 | } | |
1037 | ||
1038 | int bgp_zebra_get_table_range(uint32_t chunk_size, | |
1039 | uint32_t *start, uint32_t *end) | |
1040 | { | |
1041 | int ret; | |
1042 | ||
1043 | if (!bgp_tm_status_connected) | |
1044 | return -1; | |
1045 | ret = tm_get_table_chunk(zclient, chunk_size, start, end); | |
1046 | if (ret < 0) { | |
1047 | flog_err(EC_BGP_TABLE_CHUNK, | |
1048 | "BGP: Error getting table chunk %u", chunk_size); | |
1049 | return -1; | |
1050 | } | |
1051 | zlog_info("BGP: Table Manager returns range from chunk %u is [%u %u]", | |
1052 | chunk_size, *start, *end); | |
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | static int update_ipv4nh_for_route_install(int nh_othervrf, | |
1057 | struct bgp *nh_bgp, | |
1058 | struct in_addr *nexthop, | |
1059 | struct attr *attr, | |
1060 | bool is_evpn, | |
1061 | struct zapi_nexthop *api_nh) | |
1062 | { | |
1063 | api_nh->gate.ipv4 = *nexthop; | |
1064 | api_nh->vrf_id = nh_bgp->vrf_id; | |
1065 | ||
1066 | /* Need to set fields appropriately for EVPN routes imported into | |
1067 | * a VRF (which are programmed as onlink on l3-vni SVI) as well as | |
1068 | * connected routes leaked into a VRF. | |
1069 | */ | |
1070 | if (is_evpn) { | |
1071 | api_nh->type = NEXTHOP_TYPE_IPV4_IFINDEX; | |
1072 | api_nh->onlink = true; | |
1073 | api_nh->ifindex = nh_bgp->l3vni_svi_ifindex; | |
1074 | } else if (nh_othervrf && | |
1075 | api_nh->gate.ipv4.s_addr == INADDR_ANY) { | |
1076 | api_nh->type = NEXTHOP_TYPE_IFINDEX; | |
1077 | api_nh->ifindex = attr->nh_ifindex; | |
1078 | } else | |
1079 | api_nh->type = NEXTHOP_TYPE_IPV4; | |
1080 | ||
1081 | return 1; | |
1082 | } | |
1083 | ||
1084 | static int | |
1085 | update_ipv6nh_for_route_install(int nh_othervrf, struct bgp *nh_bgp, | |
1086 | struct in6_addr *nexthop, | |
1087 | ifindex_t ifindex, struct bgp_path_info *pi, | |
1088 | struct bgp_path_info *best_pi, bool is_evpn, | |
1089 | struct zapi_nexthop *api_nh) | |
1090 | { | |
1091 | struct attr *attr; | |
1092 | ||
1093 | attr = pi->attr; | |
1094 | api_nh->vrf_id = nh_bgp->vrf_id; | |
1095 | ||
1096 | if (is_evpn) { | |
1097 | api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
1098 | api_nh->onlink = true; | |
1099 | api_nh->ifindex = nh_bgp->l3vni_svi_ifindex; | |
1100 | } else if (nh_othervrf) { | |
1101 | if (IN6_IS_ADDR_UNSPECIFIED(nexthop)) { | |
1102 | api_nh->type = NEXTHOP_TYPE_IFINDEX; | |
1103 | api_nh->ifindex = attr->nh_ifindex; | |
1104 | } else if (IN6_IS_ADDR_LINKLOCAL(nexthop)) { | |
1105 | if (ifindex == 0) | |
1106 | return 0; | |
1107 | api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
1108 | api_nh->ifindex = ifindex; | |
1109 | } else { | |
1110 | api_nh->type = NEXTHOP_TYPE_IPV6; | |
1111 | api_nh->ifindex = 0; | |
1112 | } | |
1113 | } else { | |
1114 | if (IN6_IS_ADDR_LINKLOCAL(nexthop)) { | |
1115 | if (pi == best_pi | |
1116 | && attr->mp_nexthop_len | |
1117 | == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) | |
1118 | if (pi->peer->nexthop.ifp) | |
1119 | ifindex = | |
1120 | pi->peer->nexthop.ifp->ifindex; | |
1121 | if (!ifindex) { | |
1122 | if (pi->peer->conf_if) | |
1123 | ifindex = pi->peer->ifp->ifindex; | |
1124 | else if (pi->peer->ifname) | |
1125 | ifindex = ifname2ifindex( | |
1126 | pi->peer->ifname, | |
1127 | pi->peer->bgp->vrf_id); | |
1128 | else if (pi->peer->nexthop.ifp) | |
1129 | ifindex = | |
1130 | pi->peer->nexthop.ifp->ifindex; | |
1131 | } | |
1132 | ||
1133 | if (ifindex == 0) | |
1134 | return 0; | |
1135 | api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
1136 | api_nh->ifindex = ifindex; | |
1137 | } else { | |
1138 | api_nh->type = NEXTHOP_TYPE_IPV6; | |
1139 | api_nh->ifindex = 0; | |
1140 | } | |
1141 | } | |
1142 | api_nh->gate.ipv6 = *nexthop; | |
1143 | ||
1144 | return 1; | |
1145 | } | |
1146 | ||
1147 | void bgp_zebra_announce(struct bgp_node *rn, struct prefix *p, | |
1148 | struct bgp_path_info *info, struct bgp *bgp, afi_t afi, | |
1149 | safi_t safi) | |
1150 | { | |
1151 | struct zapi_route api; | |
1152 | struct zapi_nexthop *api_nh; | |
1153 | int nh_family; | |
1154 | unsigned int valid_nh_count = 0; | |
1155 | int has_valid_label = 0; | |
1156 | uint8_t distance; | |
1157 | struct peer *peer; | |
1158 | struct bgp_path_info *mpinfo; | |
1159 | uint32_t metric; | |
1160 | struct attr local_attr; | |
1161 | struct bgp_path_info local_info; | |
1162 | struct bgp_path_info *mpinfo_cp = &local_info; | |
1163 | route_tag_t tag; | |
1164 | mpls_label_t label; | |
1165 | int nh_othervrf = 0; | |
1166 | char buf_prefix[PREFIX_STRLEN]; /* filled in if we are debugging */ | |
1167 | bool is_evpn; | |
1168 | int nh_updated; | |
1169 | ||
1170 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't | |
1171 | * know of this instance. | |
1172 | */ | |
1173 | if (!bgp_install_info_to_zebra(bgp)) | |
1174 | return; | |
1175 | ||
1176 | if (bgp->main_zebra_update_hold) | |
1177 | return; | |
1178 | ||
1179 | if (bgp_debug_zebra(p)) | |
1180 | prefix2str(p, buf_prefix, sizeof(buf_prefix)); | |
1181 | ||
1182 | if (safi == SAFI_FLOWSPEC) { | |
1183 | bgp_pbr_update_entry(bgp, &rn->p, info, afi, safi, true); | |
1184 | return; | |
1185 | } | |
1186 | ||
1187 | /* | |
1188 | * vrf leaking support (will have only one nexthop) | |
1189 | */ | |
1190 | if (info->extra && info->extra->bgp_orig) | |
1191 | nh_othervrf = 1; | |
1192 | ||
1193 | /* Make Zebra API structure. */ | |
1194 | memset(&api, 0, sizeof(api)); | |
1195 | api.vrf_id = bgp->vrf_id; | |
1196 | api.type = ZEBRA_ROUTE_BGP; | |
1197 | api.safi = safi; | |
1198 | api.prefix = *p; | |
1199 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
1200 | ||
1201 | peer = info->peer; | |
1202 | ||
1203 | if (info->type == ZEBRA_ROUTE_BGP | |
1204 | && info->sub_type == BGP_ROUTE_IMPORTED) { | |
1205 | ||
1206 | /* Obtain peer from parent */ | |
1207 | if (info->extra && info->extra->parent) | |
1208 | peer = ((struct bgp_path_info *)(info->extra->parent)) | |
1209 | ->peer; | |
1210 | } | |
1211 | ||
1212 | tag = info->attr->tag; | |
1213 | ||
1214 | /* If the route's source is EVPN, flag as such. */ | |
1215 | is_evpn = is_route_parent_evpn(info); | |
1216 | if (is_evpn) | |
1217 | SET_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE); | |
1218 | ||
1219 | if (peer->sort == BGP_PEER_IBGP || peer->sort == BGP_PEER_CONFED | |
1220 | || info->sub_type == BGP_ROUTE_AGGREGATE) { | |
1221 | SET_FLAG(api.flags, ZEBRA_FLAG_IBGP); | |
1222 | SET_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION); | |
1223 | } | |
1224 | ||
1225 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) | |
1226 | || CHECK_FLAG(peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) | |
1227 | || bgp_flag_check(bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
1228 | ||
1229 | SET_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION); | |
1230 | ||
1231 | /* Metric is currently based on the best-path only */ | |
1232 | metric = info->attr->med; | |
1233 | for (mpinfo = info; mpinfo; mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
1234 | if (valid_nh_count >= multipath_num) | |
1235 | break; | |
1236 | ||
1237 | *mpinfo_cp = *mpinfo; | |
1238 | ||
1239 | /* Get nexthop address-family */ | |
1240 | if (p->family == AF_INET | |
1241 | && !BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp->attr)) | |
1242 | nh_family = AF_INET; | |
1243 | else if (p->family == AF_INET6 | |
1244 | || (p->family == AF_INET | |
1245 | && BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp->attr))) | |
1246 | nh_family = AF_INET6; | |
1247 | else | |
1248 | continue; | |
1249 | ||
1250 | api_nh = &api.nexthops[valid_nh_count]; | |
1251 | if (nh_family == AF_INET) { | |
1252 | if (bgp_debug_zebra(&api.prefix)) { | |
1253 | if (mpinfo->extra) { | |
1254 | zlog_debug( | |
1255 | "%s: p=%s, bgp_is_valid_label: %d", | |
1256 | __func__, buf_prefix, | |
1257 | bgp_is_valid_label( | |
1258 | &mpinfo->extra | |
1259 | ->label[0])); | |
1260 | } else { | |
1261 | zlog_debug( | |
1262 | "%s: p=%s, extra is NULL, no label", | |
1263 | __func__, buf_prefix); | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | if (bgp->table_map[afi][safi].name) { | |
1268 | /* Copy info and attributes, so the route-map | |
1269 | apply doesn't modify the BGP route info. */ | |
1270 | local_attr = *mpinfo->attr; | |
1271 | mpinfo_cp->attr = &local_attr; | |
1272 | } | |
1273 | ||
1274 | if (bgp->table_map[afi][safi].name) { | |
1275 | if (!bgp_table_map_apply( | |
1276 | bgp->table_map[afi][safi].map, p, | |
1277 | mpinfo_cp)) | |
1278 | continue; | |
1279 | ||
1280 | /* metric/tag is only allowed to be | |
1281 | * overridden on 1st nexthop */ | |
1282 | if (mpinfo == info) { | |
1283 | metric = mpinfo_cp->attr->med; | |
1284 | tag = mpinfo_cp->attr->tag; | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | nh_updated = update_ipv4nh_for_route_install( | |
1289 | nh_othervrf, | |
1290 | nh_othervrf ? | |
1291 | info->extra->bgp_orig : bgp, | |
1292 | &mpinfo_cp->attr->nexthop, | |
1293 | mpinfo_cp->attr, is_evpn, api_nh); | |
1294 | } else { | |
1295 | ifindex_t ifindex = IFINDEX_INTERNAL; | |
1296 | struct in6_addr *nexthop; | |
1297 | ||
1298 | if (bgp->table_map[afi][safi].name) { | |
1299 | /* Copy info and attributes, so the route-map | |
1300 | apply doesn't modify the BGP route info. */ | |
1301 | local_attr = *mpinfo->attr; | |
1302 | mpinfo_cp->attr = &local_attr; | |
1303 | } | |
1304 | ||
1305 | if (bgp->table_map[afi][safi].name) { | |
1306 | /* Copy info and attributes, so the route-map | |
1307 | apply doesn't modify the BGP route info. */ | |
1308 | local_attr = *mpinfo->attr; | |
1309 | mpinfo_cp->attr = &local_attr; | |
1310 | ||
1311 | if (!bgp_table_map_apply( | |
1312 | bgp->table_map[afi][safi].map, p, | |
1313 | mpinfo_cp)) | |
1314 | continue; | |
1315 | ||
1316 | /* metric/tag is only allowed to be | |
1317 | * overridden on 1st nexthop */ | |
1318 | if (mpinfo == info) { | |
1319 | metric = mpinfo_cp->attr->med; | |
1320 | tag = mpinfo_cp->attr->tag; | |
1321 | } | |
1322 | } | |
1323 | nexthop = bgp_path_info_to_ipv6_nexthop(mpinfo_cp, | |
1324 | &ifindex); | |
1325 | nh_updated = update_ipv6nh_for_route_install( | |
1326 | nh_othervrf, nh_othervrf ? | |
1327 | info->extra->bgp_orig : bgp, | |
1328 | nexthop, ifindex, | |
1329 | mpinfo, info, is_evpn, api_nh); | |
1330 | } | |
1331 | ||
1332 | /* Did we get proper nexthop info to update zebra? */ | |
1333 | if (!nh_updated) | |
1334 | continue; | |
1335 | ||
1336 | if (mpinfo->extra | |
1337 | && bgp_is_valid_label(&mpinfo->extra->label[0]) | |
1338 | && !CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE)) { | |
1339 | has_valid_label = 1; | |
1340 | label = label_pton(&mpinfo->extra->label[0]); | |
1341 | ||
1342 | api_nh->label_num = 1; | |
1343 | api_nh->labels[0] = label; | |
1344 | } | |
1345 | memcpy(&api_nh->rmac, &(mpinfo->attr->rmac), | |
1346 | sizeof(struct ethaddr)); | |
1347 | valid_nh_count++; | |
1348 | } | |
1349 | ||
1350 | ||
1351 | /* if this is a evpn route we don't have to include the label */ | |
1352 | if (has_valid_label && !(CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE))) | |
1353 | SET_FLAG(api.message, ZAPI_MESSAGE_LABEL); | |
1354 | ||
1355 | /* | |
1356 | * When we create an aggregate route we must also | |
1357 | * install a Null0 route in the RIB, so overwrite | |
1358 | * what was written into api with a blackhole route | |
1359 | */ | |
1360 | if (info->sub_type == BGP_ROUTE_AGGREGATE) | |
1361 | zapi_route_set_blackhole(&api, BLACKHOLE_NULL); | |
1362 | else | |
1363 | api.nexthop_num = valid_nh_count; | |
1364 | ||
1365 | SET_FLAG(api.message, ZAPI_MESSAGE_METRIC); | |
1366 | api.metric = metric; | |
1367 | ||
1368 | if (tag) { | |
1369 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1370 | api.tag = tag; | |
1371 | } | |
1372 | ||
1373 | distance = bgp_distance_apply(p, info, afi, safi, bgp); | |
1374 | if (distance) { | |
1375 | SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE); | |
1376 | api.distance = distance; | |
1377 | } | |
1378 | ||
1379 | if (bgp_debug_zebra(p)) { | |
1380 | char prefix_buf[PREFIX_STRLEN]; | |
1381 | char nh_buf[INET6_ADDRSTRLEN]; | |
1382 | char label_buf[20]; | |
1383 | int i; | |
1384 | ||
1385 | prefix2str(&api.prefix, prefix_buf, sizeof(prefix_buf)); | |
1386 | zlog_debug("Tx route %s VRF %u %s metric %u tag %" ROUTE_TAG_PRI | |
1387 | " count %d", | |
1388 | valid_nh_count ? "add" : "delete", bgp->vrf_id, | |
1389 | prefix_buf, api.metric, api.tag, api.nexthop_num); | |
1390 | for (i = 0; i < api.nexthop_num; i++) { | |
1391 | api_nh = &api.nexthops[i]; | |
1392 | ||
1393 | switch (api_nh->type) { | |
1394 | case NEXTHOP_TYPE_IFINDEX: | |
1395 | nh_buf[0] = '\0'; | |
1396 | break; | |
1397 | case NEXTHOP_TYPE_IPV4: | |
1398 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1399 | nh_family = AF_INET; | |
1400 | inet_ntop(nh_family, &api_nh->gate, nh_buf, | |
1401 | sizeof(nh_buf)); | |
1402 | break; | |
1403 | case NEXTHOP_TYPE_IPV6: | |
1404 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1405 | nh_family = AF_INET6; | |
1406 | inet_ntop(nh_family, &api_nh->gate, nh_buf, | |
1407 | sizeof(nh_buf)); | |
1408 | break; | |
1409 | case NEXTHOP_TYPE_BLACKHOLE: | |
1410 | strlcpy(nh_buf, "blackhole", sizeof(nh_buf)); | |
1411 | break; | |
1412 | default: | |
1413 | /* Note: add new nexthop case */ | |
1414 | assert(0); | |
1415 | break; | |
1416 | } | |
1417 | ||
1418 | label_buf[0] = '\0'; | |
1419 | if (has_valid_label | |
1420 | && !CHECK_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE)) | |
1421 | sprintf(label_buf, "label %u", | |
1422 | api_nh->labels[0]); | |
1423 | zlog_debug(" nhop [%d]: %s if %u VRF %u %s", | |
1424 | i + 1, nh_buf, api_nh->ifindex, | |
1425 | api_nh->vrf_id, label_buf); | |
1426 | } | |
1427 | } | |
1428 | ||
1429 | if (bgp_debug_zebra(p)) { | |
1430 | int recursion_flag = 0; | |
1431 | ||
1432 | if (CHECK_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION)) | |
1433 | recursion_flag = 1; | |
1434 | ||
1435 | zlog_debug("%s: %s: announcing to zebra (recursion %sset)", | |
1436 | __func__, buf_prefix, | |
1437 | (recursion_flag ? "" : "NOT ")); | |
1438 | } | |
1439 | zclient_route_send(valid_nh_count ? ZEBRA_ROUTE_ADD | |
1440 | : ZEBRA_ROUTE_DELETE, | |
1441 | zclient, &api); | |
1442 | } | |
1443 | ||
1444 | /* Announce all routes of a table to zebra */ | |
1445 | void bgp_zebra_announce_table(struct bgp *bgp, afi_t afi, safi_t safi) | |
1446 | { | |
1447 | struct bgp_node *rn; | |
1448 | struct bgp_table *table; | |
1449 | struct bgp_path_info *pi; | |
1450 | ||
1451 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't | |
1452 | * know of this instance. | |
1453 | */ | |
1454 | if (!bgp_install_info_to_zebra(bgp)) | |
1455 | return; | |
1456 | ||
1457 | table = bgp->rib[afi][safi]; | |
1458 | if (!table) | |
1459 | return; | |
1460 | ||
1461 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) | |
1462 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) | |
1463 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) && | |
1464 | ||
1465 | (pi->type == ZEBRA_ROUTE_BGP | |
1466 | && (pi->sub_type == BGP_ROUTE_NORMAL | |
1467 | || pi->sub_type == BGP_ROUTE_IMPORTED))) | |
1468 | ||
1469 | bgp_zebra_announce(rn, &rn->p, pi, bgp, afi, | |
1470 | safi); | |
1471 | } | |
1472 | ||
1473 | void bgp_zebra_withdraw(struct prefix *p, struct bgp_path_info *info, | |
1474 | struct bgp *bgp, safi_t safi) | |
1475 | { | |
1476 | struct zapi_route api; | |
1477 | struct peer *peer; | |
1478 | ||
1479 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't | |
1480 | * know of this instance. | |
1481 | */ | |
1482 | if (!bgp_install_info_to_zebra(bgp)) | |
1483 | return; | |
1484 | ||
1485 | if (safi == SAFI_FLOWSPEC) { | |
1486 | peer = info->peer; | |
1487 | bgp_pbr_update_entry(peer->bgp, p, info, AFI_IP, safi, false); | |
1488 | return; | |
1489 | } | |
1490 | ||
1491 | memset(&api, 0, sizeof(api)); | |
1492 | api.vrf_id = bgp->vrf_id; | |
1493 | api.type = ZEBRA_ROUTE_BGP; | |
1494 | api.safi = safi; | |
1495 | api.prefix = *p; | |
1496 | ||
1497 | /* If the route's source is EVPN, flag as such. */ | |
1498 | if (is_route_parent_evpn(info)) | |
1499 | SET_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE); | |
1500 | ||
1501 | if (bgp_debug_zebra(p)) { | |
1502 | char buf[PREFIX_STRLEN]; | |
1503 | ||
1504 | prefix2str(&api.prefix, buf, sizeof(buf)); | |
1505 | zlog_debug("Tx route delete VRF %u %s", bgp->vrf_id, buf); | |
1506 | } | |
1507 | ||
1508 | zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api); | |
1509 | } | |
1510 | ||
1511 | struct bgp_redist *bgp_redist_lookup(struct bgp *bgp, afi_t afi, uint8_t type, | |
1512 | unsigned short instance) | |
1513 | { | |
1514 | struct list *red_list; | |
1515 | struct listnode *node; | |
1516 | struct bgp_redist *red; | |
1517 | ||
1518 | red_list = bgp->redist[afi][type]; | |
1519 | if (!red_list) | |
1520 | return (NULL); | |
1521 | ||
1522 | for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) | |
1523 | if (red->instance == instance) | |
1524 | return red; | |
1525 | ||
1526 | return NULL; | |
1527 | } | |
1528 | ||
1529 | struct bgp_redist *bgp_redist_add(struct bgp *bgp, afi_t afi, uint8_t type, | |
1530 | unsigned short instance) | |
1531 | { | |
1532 | struct list *red_list; | |
1533 | struct bgp_redist *red; | |
1534 | ||
1535 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1536 | if (red) | |
1537 | return red; | |
1538 | ||
1539 | if (!bgp->redist[afi][type]) | |
1540 | bgp->redist[afi][type] = list_new(); | |
1541 | ||
1542 | red_list = bgp->redist[afi][type]; | |
1543 | red = XCALLOC(MTYPE_BGP_REDIST, sizeof(struct bgp_redist)); | |
1544 | red->instance = instance; | |
1545 | ||
1546 | listnode_add(red_list, red); | |
1547 | ||
1548 | return red; | |
1549 | } | |
1550 | ||
1551 | static void bgp_redist_del(struct bgp *bgp, afi_t afi, uint8_t type, | |
1552 | unsigned short instance) | |
1553 | { | |
1554 | struct bgp_redist *red; | |
1555 | ||
1556 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1557 | ||
1558 | if (red) { | |
1559 | listnode_delete(bgp->redist[afi][type], red); | |
1560 | XFREE(MTYPE_BGP_REDIST, red); | |
1561 | if (!bgp->redist[afi][type]->count) | |
1562 | list_delete(&bgp->redist[afi][type]); | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | /* Other routes redistribution into BGP. */ | |
1567 | int bgp_redistribute_set(struct bgp *bgp, afi_t afi, int type, | |
1568 | unsigned short instance, bool changed) | |
1569 | { | |
1570 | /* If redistribute options are changed call | |
1571 | * bgp_redistribute_unreg() to reset the option and withdraw | |
1572 | * the routes | |
1573 | */ | |
1574 | if (changed) | |
1575 | bgp_redistribute_unreg(bgp, afi, type, instance); | |
1576 | ||
1577 | /* Return if already redistribute flag is set. */ | |
1578 | if (instance) { | |
1579 | if (redist_check_instance(&zclient->mi_redist[afi][type], | |
1580 | instance)) | |
1581 | return CMD_WARNING; | |
1582 | ||
1583 | redist_add_instance(&zclient->mi_redist[afi][type], instance); | |
1584 | } else { | |
1585 | if (vrf_bitmap_check(zclient->redist[afi][type], bgp->vrf_id)) | |
1586 | return CMD_WARNING; | |
1587 | ||
1588 | #if ENABLE_BGP_VNC | |
1589 | if (EVPN_ENABLED(bgp) && type == ZEBRA_ROUTE_VNC_DIRECT) { | |
1590 | vnc_export_bgp_enable( | |
1591 | bgp, afi); /* only enables if mode bits cfg'd */ | |
1592 | } | |
1593 | #endif | |
1594 | ||
1595 | vrf_bitmap_set(zclient->redist[afi][type], bgp->vrf_id); | |
1596 | } | |
1597 | ||
1598 | /* | |
1599 | * Don't try to register if we're not connected to Zebra or Zebra | |
1600 | * doesn't know of this instance. | |
1601 | * | |
1602 | * When we come up later well resend if needed. | |
1603 | */ | |
1604 | if (!bgp_install_info_to_zebra(bgp)) | |
1605 | return CMD_SUCCESS; | |
1606 | ||
1607 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1608 | zlog_debug("Tx redistribute add VRF %u afi %d %s %d", | |
1609 | bgp->vrf_id, afi, zebra_route_string(type), | |
1610 | instance); | |
1611 | ||
1612 | /* Send distribute add message to zebra. */ | |
1613 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, | |
1614 | instance, bgp->vrf_id); | |
1615 | ||
1616 | return CMD_SUCCESS; | |
1617 | } | |
1618 | ||
1619 | int bgp_redistribute_resend(struct bgp *bgp, afi_t afi, int type, | |
1620 | unsigned short instance) | |
1621 | { | |
1622 | /* Don't try to send if we're not connected to Zebra or Zebra doesn't | |
1623 | * know of this instance. | |
1624 | */ | |
1625 | if (!bgp_install_info_to_zebra(bgp)) | |
1626 | return -1; | |
1627 | ||
1628 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1629 | zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d", | |
1630 | bgp->vrf_id, afi, zebra_route_string(type), | |
1631 | instance); | |
1632 | ||
1633 | /* Send distribute add message to zebra. */ | |
1634 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, | |
1635 | instance, bgp->vrf_id); | |
1636 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, | |
1637 | instance, bgp->vrf_id); | |
1638 | ||
1639 | return 0; | |
1640 | } | |
1641 | ||
1642 | /* Redistribute with route-map specification. */ | |
1643 | int bgp_redistribute_rmap_set(struct bgp_redist *red, const char *name, | |
1644 | struct route_map *route_map) | |
1645 | { | |
1646 | if (red->rmap.name && (strcmp(red->rmap.name, name) == 0)) | |
1647 | return 0; | |
1648 | ||
1649 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); | |
1650 | /* Decrement the count for existing routemap and | |
1651 | * increment the count for new route map. | |
1652 | */ | |
1653 | route_map_counter_decrement(red->rmap.map); | |
1654 | red->rmap.name = XSTRDUP(MTYPE_ROUTE_MAP_NAME, name); | |
1655 | red->rmap.map = route_map; | |
1656 | route_map_counter_increment(red->rmap.map); | |
1657 | ||
1658 | return 1; | |
1659 | } | |
1660 | ||
1661 | /* Redistribute with metric specification. */ | |
1662 | int bgp_redistribute_metric_set(struct bgp *bgp, struct bgp_redist *red, | |
1663 | afi_t afi, int type, uint32_t metric) | |
1664 | { | |
1665 | struct bgp_node *rn; | |
1666 | struct bgp_path_info *pi; | |
1667 | ||
1668 | if (red->redist_metric_flag && red->redist_metric == metric) | |
1669 | return 0; | |
1670 | ||
1671 | red->redist_metric_flag = 1; | |
1672 | red->redist_metric = metric; | |
1673 | ||
1674 | for (rn = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); rn; | |
1675 | rn = bgp_route_next(rn)) { | |
1676 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { | |
1677 | if (pi->sub_type == BGP_ROUTE_REDISTRIBUTE | |
1678 | && pi->type == type | |
1679 | && pi->instance == red->instance) { | |
1680 | struct attr *old_attr; | |
1681 | struct attr new_attr; | |
1682 | ||
1683 | bgp_attr_dup(&new_attr, pi->attr); | |
1684 | new_attr.med = red->redist_metric; | |
1685 | old_attr = pi->attr; | |
1686 | pi->attr = bgp_attr_intern(&new_attr); | |
1687 | bgp_attr_unintern(&old_attr); | |
1688 | ||
1689 | bgp_path_info_set_flag(rn, pi, | |
1690 | BGP_PATH_ATTR_CHANGED); | |
1691 | bgp_process(bgp, rn, afi, SAFI_UNICAST); | |
1692 | } | |
1693 | } | |
1694 | } | |
1695 | ||
1696 | return 1; | |
1697 | } | |
1698 | ||
1699 | /* Unset redistribution. */ | |
1700 | int bgp_redistribute_unreg(struct bgp *bgp, afi_t afi, int type, | |
1701 | unsigned short instance) | |
1702 | { | |
1703 | struct bgp_redist *red; | |
1704 | ||
1705 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1706 | if (!red) | |
1707 | return CMD_SUCCESS; | |
1708 | ||
1709 | /* Return if zebra connection is disabled. */ | |
1710 | if (instance) { | |
1711 | if (!redist_check_instance(&zclient->mi_redist[afi][type], | |
1712 | instance)) | |
1713 | return CMD_WARNING; | |
1714 | redist_del_instance(&zclient->mi_redist[afi][type], instance); | |
1715 | } else { | |
1716 | if (!vrf_bitmap_check(zclient->redist[afi][type], bgp->vrf_id)) | |
1717 | return CMD_WARNING; | |
1718 | vrf_bitmap_unset(zclient->redist[afi][type], bgp->vrf_id); | |
1719 | } | |
1720 | ||
1721 | ||
1722 | if (bgp_install_info_to_zebra(bgp)) { | |
1723 | /* Send distribute delete message to zebra. */ | |
1724 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1725 | zlog_debug("Tx redistribute del VRF %u afi %d %s %d", | |
1726 | bgp->vrf_id, afi, zebra_route_string(type), | |
1727 | instance); | |
1728 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, | |
1729 | type, instance, bgp->vrf_id); | |
1730 | } | |
1731 | ||
1732 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
1733 | bgp_redistribute_withdraw(bgp, afi, type, instance); | |
1734 | ||
1735 | return CMD_SUCCESS; | |
1736 | } | |
1737 | ||
1738 | /* Unset redistribution. */ | |
1739 | int bgp_redistribute_unset(struct bgp *bgp, afi_t afi, int type, | |
1740 | unsigned short instance) | |
1741 | { | |
1742 | struct bgp_redist *red; | |
1743 | ||
1744 | /* | |
1745 | * vnc and vpn->vrf checks must be before red check because | |
1746 | * they operate within bgpd irrespective of zebra connection | |
1747 | * status. red lookup fails if there is no zebra connection. | |
1748 | */ | |
1749 | #if ENABLE_BGP_VNC | |
1750 | if (EVPN_ENABLED(bgp) && type == ZEBRA_ROUTE_VNC_DIRECT) { | |
1751 | vnc_export_bgp_disable(bgp, afi); | |
1752 | } | |
1753 | #endif | |
1754 | ||
1755 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1756 | if (!red) | |
1757 | return CMD_SUCCESS; | |
1758 | ||
1759 | bgp_redistribute_unreg(bgp, afi, type, instance); | |
1760 | ||
1761 | /* Unset route-map. */ | |
1762 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); | |
1763 | route_map_counter_decrement(red->rmap.map); | |
1764 | red->rmap.name = NULL; | |
1765 | red->rmap.map = NULL; | |
1766 | ||
1767 | /* Unset metric. */ | |
1768 | red->redist_metric_flag = 0; | |
1769 | red->redist_metric = 0; | |
1770 | ||
1771 | bgp_redist_del(bgp, afi, type, instance); | |
1772 | ||
1773 | return CMD_SUCCESS; | |
1774 | } | |
1775 | ||
1776 | void bgp_redistribute_redo(struct bgp *bgp) | |
1777 | { | |
1778 | afi_t afi; | |
1779 | int i; | |
1780 | struct list *red_list; | |
1781 | struct listnode *node; | |
1782 | struct bgp_redist *red; | |
1783 | ||
1784 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
1785 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) { | |
1786 | ||
1787 | red_list = bgp->redist[afi][i]; | |
1788 | if (!red_list) | |
1789 | continue; | |
1790 | ||
1791 | for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) { | |
1792 | bgp_redistribute_resend(bgp, afi, i, | |
1793 | red->instance); | |
1794 | } | |
1795 | } | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | /* Unset redistribute vrf bitmap during triggers like | |
1800 | restart networking or delete VRFs */ | |
1801 | void bgp_unset_redist_vrf_bitmaps(struct bgp *bgp, vrf_id_t old_vrf_id) | |
1802 | { | |
1803 | int i; | |
1804 | afi_t afi; | |
1805 | ||
1806 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
1807 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
1808 | if (vrf_bitmap_check(zclient->redist[afi][i], | |
1809 | old_vrf_id)) | |
1810 | vrf_bitmap_unset(zclient->redist[afi][i], | |
1811 | old_vrf_id); | |
1812 | return; | |
1813 | } | |
1814 | ||
1815 | void bgp_zclient_reset(void) | |
1816 | { | |
1817 | zclient_reset(zclient); | |
1818 | } | |
1819 | ||
1820 | /* Register this instance with Zebra. Invoked upon connect (for | |
1821 | * default instance) and when other VRFs are learnt (or created and | |
1822 | * already learnt). | |
1823 | */ | |
1824 | void bgp_zebra_instance_register(struct bgp *bgp) | |
1825 | { | |
1826 | /* Don't try to register if we're not connected to Zebra */ | |
1827 | if (!zclient || zclient->sock < 0) | |
1828 | return; | |
1829 | ||
1830 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1831 | zlog_debug("Registering VRF %u", bgp->vrf_id); | |
1832 | ||
1833 | /* Register for router-id, interfaces, redistributed routes. */ | |
1834 | zclient_send_reg_requests(zclient, bgp->vrf_id); | |
1835 | ||
1836 | /* For EVPN instance, register to learn about VNIs, if appropriate. */ | |
1837 | if (bgp->advertise_all_vni) | |
1838 | bgp_zebra_advertise_all_vni(bgp, 1); | |
1839 | ||
1840 | bgp_nht_register_nexthops(bgp); | |
1841 | } | |
1842 | ||
1843 | /* Deregister this instance with Zebra. Invoked upon the instance | |
1844 | * being deleted (default or VRF) and it is already registered. | |
1845 | */ | |
1846 | void bgp_zebra_instance_deregister(struct bgp *bgp) | |
1847 | { | |
1848 | /* Don't try to deregister if we're not connected to Zebra */ | |
1849 | if (zclient->sock < 0) | |
1850 | return; | |
1851 | ||
1852 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1853 | zlog_debug("Deregistering VRF %u", bgp->vrf_id); | |
1854 | ||
1855 | /* For EVPN instance, unregister learning about VNIs, if appropriate. */ | |
1856 | if (bgp->advertise_all_vni) | |
1857 | bgp_zebra_advertise_all_vni(bgp, 0); | |
1858 | ||
1859 | /* Deregister for router-id, interfaces, redistributed routes. */ | |
1860 | zclient_send_dereg_requests(zclient, bgp->vrf_id); | |
1861 | } | |
1862 | ||
1863 | void bgp_zebra_initiate_radv(struct bgp *bgp, struct peer *peer) | |
1864 | { | |
1865 | int ra_interval = BGP_UNNUM_DEFAULT_RA_INTERVAL; | |
1866 | ||
1867 | /* Don't try to initiate if we're not connected to Zebra */ | |
1868 | if (zclient->sock < 0) | |
1869 | return; | |
1870 | ||
1871 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1872 | zlog_debug("%u: Initiating RA for peer %s", bgp->vrf_id, | |
1873 | peer->host); | |
1874 | ||
1875 | zclient_send_interface_radv_req(zclient, bgp->vrf_id, peer->ifp, 1, | |
1876 | ra_interval); | |
1877 | } | |
1878 | ||
1879 | void bgp_zebra_terminate_radv(struct bgp *bgp, struct peer *peer) | |
1880 | { | |
1881 | /* Don't try to terminate if we're not connected to Zebra */ | |
1882 | if (zclient->sock < 0) | |
1883 | return; | |
1884 | ||
1885 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1886 | zlog_debug("%u: Terminating RA for peer %s", bgp->vrf_id, | |
1887 | peer->host); | |
1888 | ||
1889 | zclient_send_interface_radv_req(zclient, bgp->vrf_id, peer->ifp, 0, 0); | |
1890 | } | |
1891 | ||
1892 | int bgp_zebra_advertise_subnet(struct bgp *bgp, int advertise, vni_t vni) | |
1893 | { | |
1894 | struct stream *s = NULL; | |
1895 | ||
1896 | /* Check socket. */ | |
1897 | if (!zclient || zclient->sock < 0) | |
1898 | return 0; | |
1899 | ||
1900 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1901 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1902 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1903 | zlog_debug("%s: No zebra instance to talk to, cannot advertise subnet", | |
1904 | __PRETTY_FUNCTION__); | |
1905 | return 0; | |
1906 | } | |
1907 | ||
1908 | s = zclient->obuf; | |
1909 | stream_reset(s); | |
1910 | ||
1911 | zclient_create_header(s, ZEBRA_ADVERTISE_SUBNET, bgp->vrf_id); | |
1912 | stream_putc(s, advertise); | |
1913 | stream_put3(s, vni); | |
1914 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1915 | ||
1916 | return zclient_send_message(zclient); | |
1917 | } | |
1918 | ||
1919 | int bgp_zebra_advertise_svi_macip(struct bgp *bgp, int advertise, vni_t vni) | |
1920 | { | |
1921 | struct stream *s = NULL; | |
1922 | ||
1923 | /* Check socket. */ | |
1924 | if (!zclient || zclient->sock < 0) | |
1925 | return 0; | |
1926 | ||
1927 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1928 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
1929 | return 0; | |
1930 | ||
1931 | s = zclient->obuf; | |
1932 | stream_reset(s); | |
1933 | ||
1934 | zclient_create_header(s, ZEBRA_ADVERTISE_SVI_MACIP, bgp->vrf_id); | |
1935 | stream_putc(s, advertise); | |
1936 | stream_putl(s, vni); | |
1937 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1938 | ||
1939 | return zclient_send_message(zclient); | |
1940 | } | |
1941 | ||
1942 | int bgp_zebra_advertise_gw_macip(struct bgp *bgp, int advertise, vni_t vni) | |
1943 | { | |
1944 | struct stream *s = NULL; | |
1945 | ||
1946 | /* Check socket. */ | |
1947 | if (!zclient || zclient->sock < 0) | |
1948 | return 0; | |
1949 | ||
1950 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1951 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1952 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1953 | zlog_debug("%s: No zebra instance to talk to, not installing gw_macip", | |
1954 | __PRETTY_FUNCTION__); | |
1955 | return 0; | |
1956 | } | |
1957 | ||
1958 | s = zclient->obuf; | |
1959 | stream_reset(s); | |
1960 | ||
1961 | zclient_create_header(s, ZEBRA_ADVERTISE_DEFAULT_GW, bgp->vrf_id); | |
1962 | stream_putc(s, advertise); | |
1963 | stream_putl(s, vni); | |
1964 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1965 | ||
1966 | return zclient_send_message(zclient); | |
1967 | } | |
1968 | ||
1969 | int bgp_zebra_vxlan_flood_control(struct bgp *bgp, | |
1970 | enum vxlan_flood_control flood_ctrl) | |
1971 | { | |
1972 | struct stream *s; | |
1973 | ||
1974 | /* Check socket. */ | |
1975 | if (!zclient || zclient->sock < 0) | |
1976 | return 0; | |
1977 | ||
1978 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1979 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1980 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1981 | zlog_debug("%s: No zebra instance to talk to, not installing all vni", | |
1982 | __PRETTY_FUNCTION__); | |
1983 | return 0; | |
1984 | } | |
1985 | ||
1986 | s = zclient->obuf; | |
1987 | stream_reset(s); | |
1988 | ||
1989 | zclient_create_header(s, ZEBRA_VXLAN_FLOOD_CONTROL, bgp->vrf_id); | |
1990 | stream_putc(s, flood_ctrl); | |
1991 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1992 | ||
1993 | return zclient_send_message(zclient); | |
1994 | } | |
1995 | ||
1996 | int bgp_zebra_advertise_all_vni(struct bgp *bgp, int advertise) | |
1997 | { | |
1998 | struct stream *s; | |
1999 | ||
2000 | /* Check socket. */ | |
2001 | if (!zclient || zclient->sock < 0) | |
2002 | return 0; | |
2003 | ||
2004 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
2005 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
2006 | return 0; | |
2007 | ||
2008 | s = zclient->obuf; | |
2009 | stream_reset(s); | |
2010 | ||
2011 | zclient_create_header(s, ZEBRA_ADVERTISE_ALL_VNI, bgp->vrf_id); | |
2012 | stream_putc(s, advertise); | |
2013 | /* Also inform current BUM handling setting. This is really | |
2014 | * relevant only when 'advertise' is set. | |
2015 | */ | |
2016 | stream_putc(s, bgp->vxlan_flood_ctrl); | |
2017 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2018 | ||
2019 | return zclient_send_message(zclient); | |
2020 | } | |
2021 | ||
2022 | int bgp_zebra_dup_addr_detection(struct bgp *bgp) | |
2023 | { | |
2024 | struct stream *s; | |
2025 | ||
2026 | /* Check socket. */ | |
2027 | if (!zclient || zclient->sock < 0) | |
2028 | return 0; | |
2029 | ||
2030 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
2031 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
2032 | return 0; | |
2033 | ||
2034 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2035 | zlog_debug("dup addr detect %s max_moves %u time %u freeze %s freeze_time %u", | |
2036 | bgp->evpn_info->dup_addr_detect ? | |
2037 | "enable" : "disable", | |
2038 | bgp->evpn_info->dad_max_moves, | |
2039 | bgp->evpn_info->dad_time, | |
2040 | bgp->evpn_info->dad_freeze ? | |
2041 | "enable" : "disable", | |
2042 | bgp->evpn_info->dad_freeze_time); | |
2043 | ||
2044 | s = zclient->obuf; | |
2045 | stream_reset(s); | |
2046 | zclient_create_header(s, ZEBRA_DUPLICATE_ADDR_DETECTION, | |
2047 | bgp->vrf_id); | |
2048 | stream_putl(s, bgp->evpn_info->dup_addr_detect); | |
2049 | stream_putl(s, bgp->evpn_info->dad_time); | |
2050 | stream_putl(s, bgp->evpn_info->dad_max_moves); | |
2051 | stream_putl(s, bgp->evpn_info->dad_freeze); | |
2052 | stream_putl(s, bgp->evpn_info->dad_freeze_time); | |
2053 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2054 | ||
2055 | return zclient_send_message(zclient); | |
2056 | } | |
2057 | ||
2058 | static int rule_notify_owner(ZAPI_CALLBACK_ARGS) | |
2059 | { | |
2060 | uint32_t seqno, priority, unique; | |
2061 | enum zapi_rule_notify_owner note; | |
2062 | struct bgp_pbr_action *bgp_pbra; | |
2063 | struct bgp_pbr_rule *bgp_pbr = NULL; | |
2064 | ifindex_t ifi; | |
2065 | ||
2066 | if (!zapi_rule_notify_decode(zclient->ibuf, &seqno, &priority, &unique, | |
2067 | &ifi, ¬e)) | |
2068 | return -1; | |
2069 | ||
2070 | bgp_pbra = bgp_pbr_action_rule_lookup(vrf_id, unique); | |
2071 | if (!bgp_pbra) { | |
2072 | /* look in bgp pbr rule */ | |
2073 | bgp_pbr = bgp_pbr_rule_lookup(vrf_id, unique); | |
2074 | if (!bgp_pbr && note != ZAPI_RULE_REMOVED) { | |
2075 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2076 | zlog_debug("%s: Fail to look BGP rule (%u)", | |
2077 | __PRETTY_FUNCTION__, unique); | |
2078 | return 0; | |
2079 | } | |
2080 | } | |
2081 | ||
2082 | switch (note) { | |
2083 | case ZAPI_RULE_FAIL_INSTALL: | |
2084 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2085 | zlog_debug("%s: Received RULE_FAIL_INSTALL", | |
2086 | __PRETTY_FUNCTION__); | |
2087 | if (bgp_pbra) { | |
2088 | bgp_pbra->installed = false; | |
2089 | bgp_pbra->install_in_progress = false; | |
2090 | } else { | |
2091 | bgp_pbr->installed = false; | |
2092 | bgp_pbr->install_in_progress = false; | |
2093 | } | |
2094 | break; | |
2095 | case ZAPI_RULE_INSTALLED: | |
2096 | if (bgp_pbra) { | |
2097 | bgp_pbra->installed = true; | |
2098 | bgp_pbra->install_in_progress = false; | |
2099 | } else { | |
2100 | struct bgp_path_info *path; | |
2101 | struct bgp_path_info_extra *extra; | |
2102 | ||
2103 | bgp_pbr->installed = true; | |
2104 | bgp_pbr->install_in_progress = false; | |
2105 | bgp_pbr->action->refcnt++; | |
2106 | /* link bgp_info to bgp_pbr */ | |
2107 | path = (struct bgp_path_info *)bgp_pbr->path; | |
2108 | extra = bgp_path_info_extra_get(path); | |
2109 | listnode_add_force(&extra->bgp_fs_iprule, | |
2110 | bgp_pbr); | |
2111 | } | |
2112 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2113 | zlog_debug("%s: Received RULE_INSTALLED", | |
2114 | __PRETTY_FUNCTION__); | |
2115 | break; | |
2116 | case ZAPI_RULE_FAIL_REMOVE: | |
2117 | case ZAPI_RULE_REMOVED: | |
2118 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2119 | zlog_debug("%s: Received RULE REMOVED", | |
2120 | __PRETTY_FUNCTION__); | |
2121 | break; | |
2122 | } | |
2123 | ||
2124 | return 0; | |
2125 | } | |
2126 | ||
2127 | static int ipset_notify_owner(ZAPI_CALLBACK_ARGS) | |
2128 | { | |
2129 | uint32_t unique; | |
2130 | enum zapi_ipset_notify_owner note; | |
2131 | struct bgp_pbr_match *bgp_pbim; | |
2132 | ||
2133 | if (!zapi_ipset_notify_decode(zclient->ibuf, | |
2134 | &unique, | |
2135 | ¬e)) | |
2136 | return -1; | |
2137 | ||
2138 | bgp_pbim = bgp_pbr_match_ipset_lookup(vrf_id, unique); | |
2139 | if (!bgp_pbim) { | |
2140 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2141 | zlog_debug("%s: Fail to look BGP match ( %u, ID %u)", | |
2142 | __PRETTY_FUNCTION__, note, unique); | |
2143 | return 0; | |
2144 | } | |
2145 | ||
2146 | switch (note) { | |
2147 | case ZAPI_IPSET_FAIL_INSTALL: | |
2148 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2149 | zlog_debug("%s: Received IPSET_FAIL_INSTALL", | |
2150 | __PRETTY_FUNCTION__); | |
2151 | bgp_pbim->installed = false; | |
2152 | bgp_pbim->install_in_progress = false; | |
2153 | break; | |
2154 | case ZAPI_IPSET_INSTALLED: | |
2155 | bgp_pbim->installed = true; | |
2156 | bgp_pbim->install_in_progress = false; | |
2157 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2158 | zlog_debug("%s: Received IPSET_INSTALLED", | |
2159 | __PRETTY_FUNCTION__); | |
2160 | break; | |
2161 | case ZAPI_IPSET_FAIL_REMOVE: | |
2162 | case ZAPI_IPSET_REMOVED: | |
2163 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2164 | zlog_debug("%s: Received IPSET REMOVED", | |
2165 | __PRETTY_FUNCTION__); | |
2166 | break; | |
2167 | } | |
2168 | ||
2169 | return 0; | |
2170 | } | |
2171 | ||
2172 | static int ipset_entry_notify_owner(ZAPI_CALLBACK_ARGS) | |
2173 | { | |
2174 | uint32_t unique; | |
2175 | char ipset_name[ZEBRA_IPSET_NAME_SIZE]; | |
2176 | enum zapi_ipset_entry_notify_owner note; | |
2177 | struct bgp_pbr_match_entry *bgp_pbime; | |
2178 | ||
2179 | if (!zapi_ipset_entry_notify_decode( | |
2180 | zclient->ibuf, | |
2181 | &unique, | |
2182 | ipset_name, | |
2183 | ¬e)) | |
2184 | return -1; | |
2185 | bgp_pbime = bgp_pbr_match_ipset_entry_lookup(vrf_id, | |
2186 | ipset_name, | |
2187 | unique); | |
2188 | if (!bgp_pbime) { | |
2189 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2190 | zlog_debug("%s: Fail to look BGP match entry (%u, ID %u)", | |
2191 | __PRETTY_FUNCTION__, note, unique); | |
2192 | return 0; | |
2193 | } | |
2194 | ||
2195 | switch (note) { | |
2196 | case ZAPI_IPSET_ENTRY_FAIL_INSTALL: | |
2197 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2198 | zlog_debug("%s: Received IPSET_ENTRY_FAIL_INSTALL", | |
2199 | __PRETTY_FUNCTION__); | |
2200 | bgp_pbime->installed = false; | |
2201 | bgp_pbime->install_in_progress = false; | |
2202 | break; | |
2203 | case ZAPI_IPSET_ENTRY_INSTALLED: | |
2204 | { | |
2205 | struct bgp_path_info *path; | |
2206 | struct bgp_path_info_extra *extra; | |
2207 | ||
2208 | bgp_pbime->installed = true; | |
2209 | bgp_pbime->install_in_progress = false; | |
2210 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2211 | zlog_debug("%s: Received IPSET_ENTRY_INSTALLED", | |
2212 | __PRETTY_FUNCTION__); | |
2213 | /* link bgp_path_info to bpme */ | |
2214 | path = (struct bgp_path_info *)bgp_pbime->path; | |
2215 | extra = bgp_path_info_extra_get(path); | |
2216 | listnode_add_force(&extra->bgp_fs_pbr, bgp_pbime); | |
2217 | } | |
2218 | break; | |
2219 | case ZAPI_IPSET_ENTRY_FAIL_REMOVE: | |
2220 | case ZAPI_IPSET_ENTRY_REMOVED: | |
2221 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2222 | zlog_debug("%s: Received IPSET_ENTRY_REMOVED", | |
2223 | __PRETTY_FUNCTION__); | |
2224 | break; | |
2225 | } | |
2226 | return 0; | |
2227 | } | |
2228 | ||
2229 | static int iptable_notify_owner(ZAPI_CALLBACK_ARGS) | |
2230 | { | |
2231 | uint32_t unique; | |
2232 | enum zapi_iptable_notify_owner note; | |
2233 | struct bgp_pbr_match *bgpm; | |
2234 | ||
2235 | if (!zapi_iptable_notify_decode( | |
2236 | zclient->ibuf, | |
2237 | &unique, | |
2238 | ¬e)) | |
2239 | return -1; | |
2240 | bgpm = bgp_pbr_match_iptable_lookup(vrf_id, unique); | |
2241 | if (!bgpm) { | |
2242 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2243 | zlog_debug("%s: Fail to look BGP iptable (%u %u)", | |
2244 | __PRETTY_FUNCTION__, note, unique); | |
2245 | return 0; | |
2246 | } | |
2247 | switch (note) { | |
2248 | case ZAPI_IPTABLE_FAIL_INSTALL: | |
2249 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2250 | zlog_debug("%s: Received IPTABLE_FAIL_INSTALL", | |
2251 | __PRETTY_FUNCTION__); | |
2252 | bgpm->installed_in_iptable = false; | |
2253 | bgpm->install_iptable_in_progress = false; | |
2254 | break; | |
2255 | case ZAPI_IPTABLE_INSTALLED: | |
2256 | bgpm->installed_in_iptable = true; | |
2257 | bgpm->install_iptable_in_progress = false; | |
2258 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2259 | zlog_debug("%s: Received IPTABLE_INSTALLED", | |
2260 | __PRETTY_FUNCTION__); | |
2261 | bgpm->action->refcnt++; | |
2262 | break; | |
2263 | case ZAPI_IPTABLE_FAIL_REMOVE: | |
2264 | case ZAPI_IPTABLE_REMOVED: | |
2265 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2266 | zlog_debug("%s: Received IPTABLE REMOVED", | |
2267 | __PRETTY_FUNCTION__); | |
2268 | break; | |
2269 | } | |
2270 | return 0; | |
2271 | } | |
2272 | ||
2273 | /* this function is used to forge ip rule, | |
2274 | * - either for iptable/ipset using fwmark id | |
2275 | * - or for sample ip rule cmd | |
2276 | */ | |
2277 | static void bgp_encode_pbr_rule_action(struct stream *s, | |
2278 | struct bgp_pbr_action *pbra, | |
2279 | struct bgp_pbr_rule *pbr) | |
2280 | { | |
2281 | struct prefix pfx; | |
2282 | ||
2283 | stream_putl(s, 0); /* seqno unused */ | |
2284 | if (pbr) | |
2285 | stream_putl(s, pbr->priority); | |
2286 | else | |
2287 | stream_putl(s, 0); | |
2288 | /* ruleno unused - priority change | |
2289 | * ruleno permits distinguishing various FS PBR entries | |
2290 | * - FS PBR entries based on ipset/iptables | |
2291 | * - FS PBR entries based on iprule | |
2292 | * the latter may contain default routing information injected by FS | |
2293 | */ | |
2294 | if (pbr) | |
2295 | stream_putl(s, pbr->unique); | |
2296 | else | |
2297 | stream_putl(s, pbra->unique); | |
2298 | if (pbr && pbr->flags & MATCH_IP_SRC_SET) | |
2299 | memcpy(&pfx, &(pbr->src), sizeof(struct prefix)); | |
2300 | else { | |
2301 | memset(&pfx, 0, sizeof(pfx)); | |
2302 | pfx.family = AF_INET; | |
2303 | } | |
2304 | stream_putc(s, pfx.family); | |
2305 | stream_putc(s, pfx.prefixlen); | |
2306 | stream_put(s, &pfx.u.prefix, prefix_blen(&pfx)); | |
2307 | ||
2308 | stream_putw(s, 0); /* src port */ | |
2309 | ||
2310 | if (pbr && pbr->flags & MATCH_IP_DST_SET) | |
2311 | memcpy(&pfx, &(pbr->dst), sizeof(struct prefix)); | |
2312 | else { | |
2313 | memset(&pfx, 0, sizeof(pfx)); | |
2314 | pfx.family = AF_INET; | |
2315 | } | |
2316 | stream_putc(s, pfx.family); | |
2317 | stream_putc(s, pfx.prefixlen); | |
2318 | stream_put(s, &pfx.u.prefix, prefix_blen(&pfx)); | |
2319 | ||
2320 | stream_putw(s, 0); /* dst port */ | |
2321 | ||
2322 | /* if pbr present, fwmark is not used */ | |
2323 | if (pbr) | |
2324 | stream_putl(s, 0); | |
2325 | else | |
2326 | stream_putl(s, pbra->fwmark); /* fwmark */ | |
2327 | ||
2328 | stream_putl(s, pbra->table_id); | |
2329 | ||
2330 | stream_putl(s, 0); /* ifindex unused */ | |
2331 | } | |
2332 | ||
2333 | static void bgp_encode_pbr_ipset_match(struct stream *s, | |
2334 | struct bgp_pbr_match *pbim) | |
2335 | { | |
2336 | stream_putl(s, pbim->unique); | |
2337 | stream_putl(s, pbim->type); | |
2338 | ||
2339 | stream_put(s, pbim->ipset_name, | |
2340 | ZEBRA_IPSET_NAME_SIZE); | |
2341 | } | |
2342 | ||
2343 | static void bgp_encode_pbr_ipset_entry_match(struct stream *s, | |
2344 | struct bgp_pbr_match_entry *pbime) | |
2345 | { | |
2346 | stream_putl(s, pbime->unique); | |
2347 | /* check that back pointer is not null */ | |
2348 | stream_put(s, pbime->backpointer->ipset_name, | |
2349 | ZEBRA_IPSET_NAME_SIZE); | |
2350 | ||
2351 | stream_putc(s, pbime->src.family); | |
2352 | stream_putc(s, pbime->src.prefixlen); | |
2353 | stream_put(s, &pbime->src.u.prefix, prefix_blen(&pbime->src)); | |
2354 | ||
2355 | stream_putc(s, pbime->dst.family); | |
2356 | stream_putc(s, pbime->dst.prefixlen); | |
2357 | stream_put(s, &pbime->dst.u.prefix, prefix_blen(&pbime->dst)); | |
2358 | ||
2359 | stream_putw(s, pbime->src_port_min); | |
2360 | stream_putw(s, pbime->src_port_max); | |
2361 | stream_putw(s, pbime->dst_port_min); | |
2362 | stream_putw(s, pbime->dst_port_max); | |
2363 | stream_putc(s, pbime->proto); | |
2364 | } | |
2365 | ||
2366 | static void bgp_encode_pbr_iptable_match(struct stream *s, | |
2367 | struct bgp_pbr_action *bpa, | |
2368 | struct bgp_pbr_match *pbm) | |
2369 | { | |
2370 | stream_putl(s, pbm->unique2); | |
2371 | ||
2372 | stream_putl(s, pbm->type); | |
2373 | ||
2374 | stream_putl(s, pbm->flags); | |
2375 | ||
2376 | /* TODO: correlate with what is contained | |
2377 | * into bgp_pbr_action. | |
2378 | * currently only forward supported | |
2379 | */ | |
2380 | if (bpa->nh.type == NEXTHOP_TYPE_BLACKHOLE) | |
2381 | stream_putl(s, ZEBRA_IPTABLES_DROP); | |
2382 | else | |
2383 | stream_putl(s, ZEBRA_IPTABLES_FORWARD); | |
2384 | stream_putl(s, bpa->fwmark); | |
2385 | stream_put(s, pbm->ipset_name, | |
2386 | ZEBRA_IPSET_NAME_SIZE); | |
2387 | stream_putw(s, pbm->pkt_len_min); | |
2388 | stream_putw(s, pbm->pkt_len_max); | |
2389 | stream_putw(s, pbm->tcp_flags); | |
2390 | stream_putw(s, pbm->tcp_mask_flags); | |
2391 | stream_putc(s, pbm->dscp_value); | |
2392 | stream_putc(s, pbm->fragment); | |
2393 | stream_putc(s, pbm->protocol); | |
2394 | } | |
2395 | ||
2396 | /* BGP has established connection with Zebra. */ | |
2397 | static void bgp_zebra_connected(struct zclient *zclient) | |
2398 | { | |
2399 | struct bgp *bgp; | |
2400 | ||
2401 | zclient_num_connects++; /* increment even if not responding */ | |
2402 | ||
2403 | /* At this point, we may or may not have BGP instances configured, but | |
2404 | * we're only interested in the default VRF (others wouldn't have learnt | |
2405 | * the VRF from Zebra yet.) | |
2406 | */ | |
2407 | bgp = bgp_get_default(); | |
2408 | if (!bgp) | |
2409 | return; | |
2410 | ||
2411 | bgp_zebra_instance_register(bgp); | |
2412 | ||
2413 | /* Send the client registration */ | |
2414 | bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER, bgp->vrf_id); | |
2415 | ||
2416 | /* tell label pool that zebra is connected */ | |
2417 | bgp_lp_event_zebra_up(); | |
2418 | ||
2419 | /* TODO - What if we have peers and networks configured, do we have to | |
2420 | * kick-start them? | |
2421 | */ | |
2422 | } | |
2423 | ||
2424 | static int bgp_zebra_process_local_es(ZAPI_CALLBACK_ARGS) | |
2425 | { | |
2426 | esi_t esi; | |
2427 | struct bgp *bgp = NULL; | |
2428 | struct stream *s = NULL; | |
2429 | char buf[ESI_STR_LEN]; | |
2430 | char buf1[INET6_ADDRSTRLEN]; | |
2431 | struct ipaddr originator_ip; | |
2432 | ||
2433 | memset(&esi, 0, sizeof(esi_t)); | |
2434 | memset(&originator_ip, 0, sizeof(struct ipaddr)); | |
2435 | ||
2436 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
2437 | if (!bgp) | |
2438 | return 0; | |
2439 | ||
2440 | s = zclient->ibuf; | |
2441 | stream_get(&esi, s, sizeof(esi_t)); | |
2442 | stream_get(&originator_ip, s, sizeof(struct ipaddr)); | |
2443 | ||
2444 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2445 | zlog_debug("Rx %s ESI %s originator-ip %s", | |
2446 | (cmd == ZEBRA_LOCAL_ES_ADD) ? "add" : "del", | |
2447 | esi_to_str(&esi, buf, sizeof(buf)), | |
2448 | ipaddr2str(&originator_ip, buf1, sizeof(buf1))); | |
2449 | ||
2450 | if (cmd == ZEBRA_LOCAL_ES_ADD) | |
2451 | bgp_evpn_local_es_add(bgp, &esi, &originator_ip); | |
2452 | else | |
2453 | bgp_evpn_local_es_del(bgp, &esi, &originator_ip); | |
2454 | return 0; | |
2455 | } | |
2456 | ||
2457 | static int bgp_zebra_process_local_l3vni(ZAPI_CALLBACK_ARGS) | |
2458 | { | |
2459 | int filter = 0; | |
2460 | char buf[ETHER_ADDR_STRLEN]; | |
2461 | vni_t l3vni = 0; | |
2462 | struct ethaddr rmac; | |
2463 | struct in_addr originator_ip; | |
2464 | struct stream *s; | |
2465 | ifindex_t svi_ifindex; | |
2466 | ||
2467 | memset(&rmac, 0, sizeof(struct ethaddr)); | |
2468 | memset(&originator_ip, 0, sizeof(struct in_addr)); | |
2469 | s = zclient->ibuf; | |
2470 | l3vni = stream_getl(s); | |
2471 | if (cmd == ZEBRA_L3VNI_ADD) { | |
2472 | stream_get(&rmac, s, sizeof(struct ethaddr)); | |
2473 | originator_ip.s_addr = stream_get_ipv4(s); | |
2474 | stream_get(&filter, s, sizeof(int)); | |
2475 | svi_ifindex = stream_getl(s); | |
2476 | ||
2477 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2478 | zlog_debug("Rx L3-VNI ADD VRF %s VNI %u RMAC %s filter %s svi-if %u", | |
2479 | vrf_id_to_name(vrf_id), l3vni, | |
2480 | prefix_mac2str(&rmac, buf, sizeof(buf)), | |
2481 | filter ? "prefix-routes-only" : "none", | |
2482 | svi_ifindex); | |
2483 | ||
2484 | bgp_evpn_local_l3vni_add(l3vni, vrf_id, &rmac, originator_ip, | |
2485 | filter, svi_ifindex); | |
2486 | } else { | |
2487 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2488 | zlog_debug("Rx L3-VNI DEL VRF %s VNI %u", | |
2489 | vrf_id_to_name(vrf_id), l3vni); | |
2490 | ||
2491 | bgp_evpn_local_l3vni_del(l3vni, vrf_id); | |
2492 | } | |
2493 | ||
2494 | return 0; | |
2495 | } | |
2496 | ||
2497 | static int bgp_zebra_process_local_vni(ZAPI_CALLBACK_ARGS) | |
2498 | { | |
2499 | struct stream *s; | |
2500 | vni_t vni; | |
2501 | struct bgp *bgp; | |
2502 | struct in_addr vtep_ip = {INADDR_ANY}; | |
2503 | vrf_id_t tenant_vrf_id = VRF_DEFAULT; | |
2504 | struct in_addr mcast_grp = {INADDR_ANY}; | |
2505 | ||
2506 | s = zclient->ibuf; | |
2507 | vni = stream_getl(s); | |
2508 | if (cmd == ZEBRA_VNI_ADD) { | |
2509 | vtep_ip.s_addr = stream_get_ipv4(s); | |
2510 | stream_get(&tenant_vrf_id, s, sizeof(vrf_id_t)); | |
2511 | mcast_grp.s_addr = stream_get_ipv4(s); | |
2512 | } | |
2513 | ||
2514 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
2515 | if (!bgp) | |
2516 | return 0; | |
2517 | ||
2518 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2519 | zlog_debug("Rx VNI %s VRF %s VNI %u tenant-vrf %s", | |
2520 | (cmd == ZEBRA_VNI_ADD) ? "add" : "del", | |
2521 | vrf_id_to_name(vrf_id), vni, | |
2522 | vrf_id_to_name(tenant_vrf_id)); | |
2523 | ||
2524 | if (cmd == ZEBRA_VNI_ADD) | |
2525 | return bgp_evpn_local_vni_add( | |
2526 | bgp, vni, vtep_ip.s_addr ? vtep_ip : bgp->router_id, | |
2527 | tenant_vrf_id, mcast_grp); | |
2528 | else | |
2529 | return bgp_evpn_local_vni_del(bgp, vni); | |
2530 | } | |
2531 | ||
2532 | static int bgp_zebra_process_local_macip(ZAPI_CALLBACK_ARGS) | |
2533 | { | |
2534 | struct stream *s; | |
2535 | vni_t vni; | |
2536 | struct bgp *bgp; | |
2537 | struct ethaddr mac; | |
2538 | struct ipaddr ip; | |
2539 | int ipa_len; | |
2540 | char buf[ETHER_ADDR_STRLEN]; | |
2541 | char buf1[INET6_ADDRSTRLEN]; | |
2542 | uint8_t flags = 0; | |
2543 | uint32_t seqnum = 0; | |
2544 | int state = 0; | |
2545 | ||
2546 | memset(&ip, 0, sizeof(ip)); | |
2547 | s = zclient->ibuf; | |
2548 | vni = stream_getl(s); | |
2549 | stream_get(&mac.octet, s, ETH_ALEN); | |
2550 | ipa_len = stream_getl(s); | |
2551 | if (ipa_len != 0 && ipa_len != IPV4_MAX_BYTELEN | |
2552 | && ipa_len != IPV6_MAX_BYTELEN) { | |
2553 | flog_err(EC_BGP_MACIP_LEN, | |
2554 | "%u:Recv MACIP %s with invalid IP addr length %d", | |
2555 | vrf_id, (cmd == ZEBRA_MACIP_ADD) ? "Add" : "Del", | |
2556 | ipa_len); | |
2557 | return -1; | |
2558 | } | |
2559 | ||
2560 | if (ipa_len) { | |
2561 | ip.ipa_type = | |
2562 | (ipa_len == IPV4_MAX_BYTELEN) ? IPADDR_V4 : IPADDR_V6; | |
2563 | stream_get(&ip.ip.addr, s, ipa_len); | |
2564 | } | |
2565 | if (cmd == ZEBRA_MACIP_ADD) { | |
2566 | flags = stream_getc(s); | |
2567 | seqnum = stream_getl(s); | |
2568 | } else { | |
2569 | state = stream_getl(s); | |
2570 | } | |
2571 | ||
2572 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
2573 | if (!bgp) | |
2574 | return 0; | |
2575 | ||
2576 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2577 | zlog_debug("%u:Recv MACIP %s flags 0x%x MAC %s IP %s VNI %u seq %u state %d", | |
2578 | vrf_id, (cmd == ZEBRA_MACIP_ADD) ? "Add" : "Del", | |
2579 | flags, prefix_mac2str(&mac, buf, sizeof(buf)), | |
2580 | ipaddr2str(&ip, buf1, sizeof(buf1)), vni, seqnum, | |
2581 | state); | |
2582 | ||
2583 | if (cmd == ZEBRA_MACIP_ADD) | |
2584 | return bgp_evpn_local_macip_add(bgp, vni, &mac, &ip, | |
2585 | flags, seqnum); | |
2586 | else | |
2587 | return bgp_evpn_local_macip_del(bgp, vni, &mac, &ip, state); | |
2588 | } | |
2589 | ||
2590 | static void bgp_zebra_process_local_ip_prefix(ZAPI_CALLBACK_ARGS) | |
2591 | { | |
2592 | struct stream *s = NULL; | |
2593 | struct bgp *bgp_vrf = NULL; | |
2594 | struct prefix p; | |
2595 | char buf[PREFIX_STRLEN]; | |
2596 | ||
2597 | memset(&p, 0, sizeof(struct prefix)); | |
2598 | s = zclient->ibuf; | |
2599 | stream_get(&p, s, sizeof(struct prefix)); | |
2600 | ||
2601 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
2602 | if (!bgp_vrf) | |
2603 | return; | |
2604 | ||
2605 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2606 | zlog_debug("Recv prefix %s %s on vrf %s", | |
2607 | prefix2str(&p, buf, sizeof(buf)), | |
2608 | (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD) ? "ADD" : "DEL", | |
2609 | vrf_id_to_name(vrf_id)); | |
2610 | ||
2611 | if (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD) { | |
2612 | ||
2613 | if (p.family == AF_INET) | |
2614 | bgp_evpn_advertise_type5_route(bgp_vrf, &p, NULL, | |
2615 | AFI_IP, SAFI_UNICAST); | |
2616 | else | |
2617 | bgp_evpn_advertise_type5_route(bgp_vrf, &p, NULL, | |
2618 | AFI_IP6, SAFI_UNICAST); | |
2619 | ||
2620 | } else { | |
2621 | if (p.family == AF_INET) | |
2622 | bgp_evpn_withdraw_type5_route(bgp_vrf, &p, AFI_IP, | |
2623 | SAFI_UNICAST); | |
2624 | else | |
2625 | bgp_evpn_withdraw_type5_route(bgp_vrf, &p, AFI_IP6, | |
2626 | SAFI_UNICAST); | |
2627 | } | |
2628 | } | |
2629 | ||
2630 | static void bgp_zebra_process_label_chunk(ZAPI_CALLBACK_ARGS) | |
2631 | { | |
2632 | struct stream *s = NULL; | |
2633 | uint8_t response_keep; | |
2634 | uint32_t first; | |
2635 | uint32_t last; | |
2636 | uint8_t proto; | |
2637 | unsigned short instance; | |
2638 | ||
2639 | s = zclient->ibuf; | |
2640 | STREAM_GETC(s, proto); | |
2641 | STREAM_GETW(s, instance); | |
2642 | STREAM_GETC(s, response_keep); | |
2643 | STREAM_GETL(s, first); | |
2644 | STREAM_GETL(s, last); | |
2645 | ||
2646 | if (zclient->redist_default != proto) { | |
2647 | flog_err(EC_BGP_LM_ERROR, "Got LM msg with wrong proto %u", | |
2648 | proto); | |
2649 | return; | |
2650 | } | |
2651 | if (zclient->instance != instance) { | |
2652 | flog_err(EC_BGP_LM_ERROR, "Got LM msg with wrong instance %u", | |
2653 | proto); | |
2654 | return; | |
2655 | } | |
2656 | ||
2657 | if (first > last || | |
2658 | first < MPLS_LABEL_UNRESERVED_MIN || | |
2659 | last > MPLS_LABEL_UNRESERVED_MAX) { | |
2660 | ||
2661 | flog_err(EC_BGP_LM_ERROR, "%s: Invalid Label chunk: %u - %u", | |
2662 | __func__, first, last); | |
2663 | return; | |
2664 | } | |
2665 | if (BGP_DEBUG(zebra, ZEBRA)) { | |
2666 | zlog_debug("Label Chunk assign: %u - %u (%u) ", | |
2667 | first, last, response_keep); | |
2668 | } | |
2669 | ||
2670 | bgp_lp_event_chunk(response_keep, first, last); | |
2671 | ||
2672 | stream_failure: /* for STREAM_GETX */ | |
2673 | return; | |
2674 | } | |
2675 | ||
2676 | extern struct zebra_privs_t bgpd_privs; | |
2677 | ||
2678 | static int bgp_ifp_create(struct interface *ifp) | |
2679 | { | |
2680 | struct bgp *bgp; | |
2681 | ||
2682 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2683 | zlog_debug("Rx Intf add VRF %u IF %s", ifp->vrf_id, ifp->name); | |
2684 | ||
2685 | bgp = bgp_lookup_by_vrf_id(ifp->vrf_id); | |
2686 | if (!bgp) | |
2687 | return 0; | |
2688 | ||
2689 | bgp_mac_add_mac_entry(ifp); | |
2690 | ||
2691 | bgp_update_interface_nbrs(bgp, ifp, ifp); | |
2692 | return 0; | |
2693 | } | |
2694 | ||
2695 | void bgp_zebra_init(struct thread_master *master, unsigned short instance) | |
2696 | { | |
2697 | zclient_num_connects = 0; | |
2698 | ||
2699 | if_zapi_callbacks(bgp_ifp_create, bgp_ifp_up, | |
2700 | bgp_ifp_down, bgp_ifp_destroy); | |
2701 | ||
2702 | /* Set default values. */ | |
2703 | zclient = zclient_new(master, &zclient_options_default); | |
2704 | zclient_init(zclient, ZEBRA_ROUTE_BGP, 0, &bgpd_privs); | |
2705 | zclient->zebra_connected = bgp_zebra_connected; | |
2706 | zclient->router_id_update = bgp_router_id_update; | |
2707 | zclient->interface_address_add = bgp_interface_address_add; | |
2708 | zclient->interface_address_delete = bgp_interface_address_delete; | |
2709 | zclient->interface_nbr_address_add = bgp_interface_nbr_address_add; | |
2710 | zclient->interface_nbr_address_delete = | |
2711 | bgp_interface_nbr_address_delete; | |
2712 | zclient->interface_vrf_update = bgp_interface_vrf_update; | |
2713 | zclient->redistribute_route_add = zebra_read_route; | |
2714 | zclient->redistribute_route_del = zebra_read_route; | |
2715 | zclient->nexthop_update = bgp_read_nexthop_update; | |
2716 | zclient->import_check_update = bgp_read_import_check_update; | |
2717 | zclient->fec_update = bgp_read_fec_update; | |
2718 | zclient->local_es_add = bgp_zebra_process_local_es; | |
2719 | zclient->local_es_del = bgp_zebra_process_local_es; | |
2720 | zclient->local_vni_add = bgp_zebra_process_local_vni; | |
2721 | zclient->local_vni_del = bgp_zebra_process_local_vni; | |
2722 | zclient->local_macip_add = bgp_zebra_process_local_macip; | |
2723 | zclient->local_macip_del = bgp_zebra_process_local_macip; | |
2724 | zclient->local_l3vni_add = bgp_zebra_process_local_l3vni; | |
2725 | zclient->local_l3vni_del = bgp_zebra_process_local_l3vni; | |
2726 | zclient->local_ip_prefix_add = bgp_zebra_process_local_ip_prefix; | |
2727 | zclient->local_ip_prefix_del = bgp_zebra_process_local_ip_prefix; | |
2728 | zclient->label_chunk = bgp_zebra_process_label_chunk; | |
2729 | zclient->rule_notify_owner = rule_notify_owner; | |
2730 | zclient->ipset_notify_owner = ipset_notify_owner; | |
2731 | zclient->ipset_entry_notify_owner = ipset_entry_notify_owner; | |
2732 | zclient->iptable_notify_owner = iptable_notify_owner; | |
2733 | zclient->instance = instance; | |
2734 | } | |
2735 | ||
2736 | void bgp_zebra_destroy(void) | |
2737 | { | |
2738 | if (zclient == NULL) | |
2739 | return; | |
2740 | zclient_stop(zclient); | |
2741 | zclient_free(zclient); | |
2742 | zclient = NULL; | |
2743 | } | |
2744 | ||
2745 | int bgp_zebra_num_connects(void) | |
2746 | { | |
2747 | return zclient_num_connects; | |
2748 | } | |
2749 | ||
2750 | void bgp_send_pbr_rule_action(struct bgp_pbr_action *pbra, | |
2751 | struct bgp_pbr_rule *pbr, | |
2752 | bool install) | |
2753 | { | |
2754 | struct stream *s; | |
2755 | ||
2756 | if (pbra->install_in_progress && !pbr) | |
2757 | return; | |
2758 | if (pbr && pbr->install_in_progress) | |
2759 | return; | |
2760 | if (BGP_DEBUG(zebra, ZEBRA)) { | |
2761 | if (pbr) | |
2762 | zlog_debug("%s: table %d (ip rule) %d", | |
2763 | __PRETTY_FUNCTION__, | |
2764 | pbra->table_id, install); | |
2765 | else | |
2766 | zlog_debug("%s: table %d fwmark %d %d", | |
2767 | __PRETTY_FUNCTION__, | |
2768 | pbra->table_id, pbra->fwmark, install); | |
2769 | } | |
2770 | s = zclient->obuf; | |
2771 | stream_reset(s); | |
2772 | ||
2773 | zclient_create_header(s, | |
2774 | install ? ZEBRA_RULE_ADD : ZEBRA_RULE_DELETE, | |
2775 | VRF_DEFAULT); | |
2776 | stream_putl(s, 1); /* send one pbr action */ | |
2777 | ||
2778 | bgp_encode_pbr_rule_action(s, pbra, pbr); | |
2779 | ||
2780 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2781 | if (!zclient_send_message(zclient) && install) { | |
2782 | if (!pbr) | |
2783 | pbra->install_in_progress = true; | |
2784 | else | |
2785 | pbr->install_in_progress = true; | |
2786 | } | |
2787 | } | |
2788 | ||
2789 | void bgp_send_pbr_ipset_match(struct bgp_pbr_match *pbrim, bool install) | |
2790 | { | |
2791 | struct stream *s; | |
2792 | ||
2793 | if (pbrim->install_in_progress) | |
2794 | return; | |
2795 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2796 | zlog_debug("%s: name %s type %d %d, ID %u", | |
2797 | __PRETTY_FUNCTION__, | |
2798 | pbrim->ipset_name, pbrim->type, | |
2799 | install, pbrim->unique); | |
2800 | s = zclient->obuf; | |
2801 | stream_reset(s); | |
2802 | ||
2803 | zclient_create_header(s, | |
2804 | install ? ZEBRA_IPSET_CREATE : | |
2805 | ZEBRA_IPSET_DESTROY, | |
2806 | VRF_DEFAULT); | |
2807 | ||
2808 | stream_putl(s, 1); /* send one pbr action */ | |
2809 | ||
2810 | bgp_encode_pbr_ipset_match(s, pbrim); | |
2811 | ||
2812 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2813 | if (!zclient_send_message(zclient) && install) | |
2814 | pbrim->install_in_progress = true; | |
2815 | } | |
2816 | ||
2817 | void bgp_send_pbr_ipset_entry_match(struct bgp_pbr_match_entry *pbrime, | |
2818 | bool install) | |
2819 | { | |
2820 | struct stream *s; | |
2821 | ||
2822 | if (pbrime->install_in_progress) | |
2823 | return; | |
2824 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2825 | zlog_debug("%s: name %s %d %d, ID %u", __PRETTY_FUNCTION__, | |
2826 | pbrime->backpointer->ipset_name, | |
2827 | pbrime->unique, install, pbrime->unique); | |
2828 | s = zclient->obuf; | |
2829 | stream_reset(s); | |
2830 | ||
2831 | zclient_create_header(s, | |
2832 | install ? ZEBRA_IPSET_ENTRY_ADD : | |
2833 | ZEBRA_IPSET_ENTRY_DELETE, | |
2834 | VRF_DEFAULT); | |
2835 | ||
2836 | stream_putl(s, 1); /* send one pbr action */ | |
2837 | ||
2838 | bgp_encode_pbr_ipset_entry_match(s, pbrime); | |
2839 | ||
2840 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2841 | if (!zclient_send_message(zclient) && install) | |
2842 | pbrime->install_in_progress = true; | |
2843 | } | |
2844 | ||
2845 | static void bgp_encode_pbr_interface_list(struct bgp *bgp, struct stream *s) | |
2846 | { | |
2847 | struct bgp_pbr_config *bgp_pbr_cfg = bgp->bgp_pbr_cfg; | |
2848 | struct bgp_pbr_interface_head *head; | |
2849 | struct bgp_pbr_interface *pbr_if; | |
2850 | struct interface *ifp; | |
2851 | ||
2852 | if (!bgp_pbr_cfg) | |
2853 | return; | |
2854 | head = &(bgp_pbr_cfg->ifaces_by_name_ipv4); | |
2855 | ||
2856 | RB_FOREACH (pbr_if, bgp_pbr_interface_head, head) { | |
2857 | ifp = if_lookup_by_name(pbr_if->name, bgp->vrf_id); | |
2858 | if (ifp) | |
2859 | stream_putl(s, ifp->ifindex); | |
2860 | } | |
2861 | } | |
2862 | ||
2863 | static int bgp_pbr_get_ifnumber(struct bgp *bgp) | |
2864 | { | |
2865 | struct bgp_pbr_config *bgp_pbr_cfg = bgp->bgp_pbr_cfg; | |
2866 | struct bgp_pbr_interface_head *head; | |
2867 | struct bgp_pbr_interface *pbr_if; | |
2868 | int cnt = 0; | |
2869 | ||
2870 | if (!bgp_pbr_cfg) | |
2871 | return 0; | |
2872 | head = &(bgp_pbr_cfg->ifaces_by_name_ipv4); | |
2873 | ||
2874 | RB_FOREACH (pbr_if, bgp_pbr_interface_head, head) { | |
2875 | if (if_lookup_by_name(pbr_if->name, bgp->vrf_id)) | |
2876 | cnt++; | |
2877 | } | |
2878 | return cnt; | |
2879 | } | |
2880 | ||
2881 | void bgp_send_pbr_iptable(struct bgp_pbr_action *pba, | |
2882 | struct bgp_pbr_match *pbm, | |
2883 | bool install) | |
2884 | { | |
2885 | struct stream *s; | |
2886 | int ret = 0; | |
2887 | int nb_interface; | |
2888 | ||
2889 | if (pbm->install_iptable_in_progress) | |
2890 | return; | |
2891 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2892 | zlog_debug("%s: name %s type %d mark %d %d, ID %u", | |
2893 | __PRETTY_FUNCTION__, pbm->ipset_name, | |
2894 | pbm->type, pba->fwmark, install, | |
2895 | pbm->unique2); | |
2896 | s = zclient->obuf; | |
2897 | stream_reset(s); | |
2898 | ||
2899 | zclient_create_header(s, | |
2900 | install ? ZEBRA_IPTABLE_ADD : | |
2901 | ZEBRA_IPTABLE_DELETE, | |
2902 | VRF_DEFAULT); | |
2903 | ||
2904 | bgp_encode_pbr_iptable_match(s, pba, pbm); | |
2905 | nb_interface = bgp_pbr_get_ifnumber(pba->bgp); | |
2906 | stream_putl(s, nb_interface); | |
2907 | if (nb_interface) | |
2908 | bgp_encode_pbr_interface_list(pba->bgp, s); | |
2909 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2910 | ret = zclient_send_message(zclient); | |
2911 | if (install) { | |
2912 | if (ret) | |
2913 | pba->refcnt++; | |
2914 | else | |
2915 | pbm->install_iptable_in_progress = true; | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | /* inject in table <table_id> a default route to: | |
2920 | * - if nexthop IP is present : to this nexthop | |
2921 | * - if vrf is different from local : to the matching VRF | |
2922 | */ | |
2923 | void bgp_zebra_announce_default(struct bgp *bgp, struct nexthop *nh, | |
2924 | afi_t afi, uint32_t table_id, bool announce) | |
2925 | { | |
2926 | struct zapi_nexthop *api_nh; | |
2927 | struct zapi_route api; | |
2928 | struct prefix p; | |
2929 | ||
2930 | if (!nh || nh->type != NEXTHOP_TYPE_IPV4 | |
2931 | || nh->vrf_id == VRF_UNKNOWN) | |
2932 | return; | |
2933 | memset(&p, 0, sizeof(struct prefix)); | |
2934 | /* default route */ | |
2935 | if (afi != AFI_IP) | |
2936 | return; | |
2937 | p.family = AF_INET; | |
2938 | memset(&api, 0, sizeof(api)); | |
2939 | api.vrf_id = bgp->vrf_id; | |
2940 | api.type = ZEBRA_ROUTE_BGP; | |
2941 | api.safi = SAFI_UNICAST; | |
2942 | api.prefix = p; | |
2943 | api.tableid = table_id; | |
2944 | api.nexthop_num = 1; | |
2945 | SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID); | |
2946 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
2947 | api_nh = &api.nexthops[0]; | |
2948 | ||
2949 | api.distance = ZEBRA_EBGP_DISTANCE_DEFAULT; | |
2950 | SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE); | |
2951 | ||
2952 | /* redirect IP */ | |
2953 | if (nh->gate.ipv4.s_addr) { | |
2954 | char buff[PREFIX_STRLEN]; | |
2955 | ||
2956 | api_nh->vrf_id = nh->vrf_id; | |
2957 | api_nh->gate.ipv4 = nh->gate.ipv4; | |
2958 | api_nh->type = NEXTHOP_TYPE_IPV4; | |
2959 | ||
2960 | inet_ntop(AF_INET, &(nh->gate.ipv4), buff, INET_ADDRSTRLEN); | |
2961 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2962 | zlog_info("BGP: %s default route to %s table %d (redirect IP)", | |
2963 | announce ? "adding" : "withdrawing", | |
2964 | buff, table_id); | |
2965 | zclient_route_send(announce ? ZEBRA_ROUTE_ADD | |
2966 | : ZEBRA_ROUTE_DELETE, | |
2967 | zclient, &api); | |
2968 | } else if (nh->vrf_id != bgp->vrf_id) { | |
2969 | struct vrf *vrf; | |
2970 | struct interface *ifp; | |
2971 | ||
2972 | vrf = vrf_lookup_by_id(nh->vrf_id); | |
2973 | if (!vrf) | |
2974 | return; | |
2975 | /* create default route with interface <VRF> | |
2976 | * with nexthop-vrf <VRF> | |
2977 | */ | |
2978 | ifp = if_lookup_by_name_all_vrf(vrf->name); | |
2979 | if (!ifp) | |
2980 | return; | |
2981 | api_nh->vrf_id = nh->vrf_id; | |
2982 | api_nh->type = NEXTHOP_TYPE_IFINDEX; | |
2983 | api_nh->ifindex = ifp->ifindex; | |
2984 | if (BGP_DEBUG(zebra, ZEBRA)) | |
2985 | zlog_info("BGP: %s default route to %s table %d (redirect VRF)", | |
2986 | announce ? "adding" : "withdrawing", | |
2987 | vrf->name, table_id); | |
2988 | zclient_route_send(announce ? ZEBRA_ROUTE_ADD | |
2989 | : ZEBRA_ROUTE_DELETE, | |
2990 | zclient, &api); | |
2991 | return; | |
2992 | } | |
2993 | } |