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718e3744 | 1 | /* zebra client |
896014f4 DL |
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 | */ | |
718e3744 | 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" | |
3f9c7369 | 32 | #include "queue.h" |
6e919709 | 33 | #include "memory.h" |
856ca177 | 34 | #include "lib/json.h" |
2376c3f2 | 35 | #include "lib/bfd.h" |
039f3a34 | 36 | #include "filter.h" |
cd1964ff | 37 | #include "mpls.h" |
128ea8ab | 38 | #include "vxlan.h" |
718e3744 | 39 | |
40 | #include "bgpd/bgpd.h" | |
41 | #include "bgpd/bgp_route.h" | |
42 | #include "bgpd/bgp_attr.h" | |
43 | #include "bgpd/bgp_nexthop.h" | |
44 | #include "bgpd/bgp_zebra.h" | |
45 | #include "bgpd/bgp_fsm.h" | |
a39275d7 | 46 | #include "bgpd/bgp_debug.h" |
8196f13d | 47 | #include "bgpd/bgp_mpath.h" |
fb018d25 | 48 | #include "bgpd/bgp_nexthop.h" |
ffd0c037 | 49 | #include "bgpd/bgp_nht.h" |
8c4f6381 | 50 | #include "bgpd/bgp_bfd.h" |
cd1964ff | 51 | #include "bgpd/bgp_label.h" |
65efcfce | 52 | #if ENABLE_BGP_VNC |
d62a17ae | 53 | #include "bgpd/rfapi/rfapi_backend.h" |
54 | #include "bgpd/rfapi/vnc_export_bgp.h" | |
65efcfce | 55 | #endif |
128ea8ab | 56 | #include "bgpd/bgp_evpn.h" |
6b0655a2 | 57 | |
718e3744 | 58 | /* All information about zebra. */ |
228da428 | 59 | struct zclient *zclient = NULL; |
718e3744 | 60 | |
ad4cbda1 | 61 | /* Can we install into zebra? */ |
d62a17ae | 62 | static inline int bgp_install_info_to_zebra(struct bgp *bgp) |
ad4cbda1 | 63 | { |
d62a17ae | 64 | if (zclient->sock <= 0) |
65 | return 0; | |
ad4cbda1 | 66 | |
d62a17ae | 67 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) |
68 | return 0; | |
ad4cbda1 | 69 | |
d62a17ae | 70 | return 1; |
ad4cbda1 | 71 | } |
72 | ||
afbb1c59 LB |
73 | int zclient_num_connects; |
74 | ||
18a6dce6 | 75 | /* Router-id update message from zebra. */ |
d62a17ae | 76 | static int bgp_router_id_update(int command, struct zclient *zclient, |
77 | zebra_size_t length, vrf_id_t vrf_id) | |
718e3744 | 78 | { |
d62a17ae | 79 | struct prefix router_id; |
718e3744 | 80 | |
d62a17ae | 81 | zebra_router_id_update_read(zclient->ibuf, &router_id); |
a39275d7 | 82 | |
d62a17ae | 83 | if (BGP_DEBUG(zebra, ZEBRA)) { |
84 | char buf[PREFIX2STR_BUFFER]; | |
85 | prefix2str(&router_id, buf, sizeof(buf)); | |
86 | zlog_debug("Rx Router Id update VRF %u Id %s", vrf_id, buf); | |
87 | } | |
a39275d7 | 88 | |
d62a17ae | 89 | bgp_router_id_zebra_bump(vrf_id, &router_id); |
90 | return 0; | |
718e3744 | 91 | } |
92 | ||
fb018d25 | 93 | /* Nexthop update message from zebra. */ |
d62a17ae | 94 | static int bgp_read_nexthop_update(int command, struct zclient *zclient, |
95 | zebra_size_t length, vrf_id_t vrf_id) | |
fb018d25 | 96 | { |
d62a17ae | 97 | bgp_parse_nexthop_update(command, vrf_id); |
98 | return 0; | |
078430f6 DS |
99 | } |
100 | ||
d62a17ae | 101 | static int bgp_read_import_check_update(int command, struct zclient *zclient, |
102 | zebra_size_t length, vrf_id_t vrf_id) | |
078430f6 | 103 | { |
d62a17ae | 104 | bgp_parse_nexthop_update(command, vrf_id); |
105 | return 0; | |
fb018d25 DS |
106 | } |
107 | ||
4a04e5f7 | 108 | /* Set or clear interface on which unnumbered neighbor is configured. This |
109 | * would in turn cause BGP to initiate or turn off IPv6 RAs on this | |
110 | * interface. | |
111 | */ | |
d62a17ae | 112 | static void bgp_update_interface_nbrs(struct bgp *bgp, struct interface *ifp, |
113 | struct interface *upd_ifp) | |
4a04e5f7 | 114 | { |
d62a17ae | 115 | struct listnode *node, *nnode; |
116 | struct peer *peer; | |
117 | ||
118 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
119 | if (peer->conf_if && (strcmp(peer->conf_if, ifp->name) == 0)) { | |
120 | if (upd_ifp) { | |
121 | peer->ifp = upd_ifp; | |
122 | bgp_zebra_initiate_radv(bgp, peer); | |
123 | } else { | |
124 | bgp_zebra_terminate_radv(bgp, peer); | |
125 | peer->ifp = upd_ifp; | |
126 | } | |
127 | } | |
128 | } | |
4a04e5f7 | 129 | } |
130 | ||
d62a17ae | 131 | static int bgp_read_fec_update(int command, struct zclient *zclient, |
132 | zebra_size_t length) | |
cd1964ff | 133 | { |
d62a17ae | 134 | bgp_parse_fec_update(); |
135 | return 0; | |
cd1964ff DS |
136 | } |
137 | ||
d62a17ae | 138 | static void bgp_start_interface_nbrs(struct bgp *bgp, struct interface *ifp) |
a80beece | 139 | { |
d62a17ae | 140 | struct listnode *node, *nnode; |
141 | struct peer *peer; | |
142 | ||
143 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
144 | if (peer->conf_if && (strcmp(peer->conf_if, ifp->name) == 0) | |
145 | && peer->status != Established) { | |
146 | if (peer_active(peer)) | |
147 | BGP_EVENT_ADD(peer, BGP_Stop); | |
148 | BGP_EVENT_ADD(peer, BGP_Start); | |
149 | } | |
150 | } | |
a80beece DS |
151 | } |
152 | ||
d62a17ae | 153 | static void bgp_nbr_connected_add(struct bgp *bgp, struct nbr_connected *ifc) |
a197c47c | 154 | { |
d62a17ae | 155 | struct listnode *node; |
156 | struct connected *connected; | |
157 | struct interface *ifp; | |
158 | struct prefix *p; | |
159 | ||
160 | /* Kick-off the FSM for any relevant peers only if there is a | |
161 | * valid local address on the interface. | |
162 | */ | |
163 | ifp = ifc->ifp; | |
164 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { | |
165 | p = connected->address; | |
166 | if (p->family == AF_INET6 | |
167 | && IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6)) | |
168 | break; | |
169 | } | |
170 | if (!connected) | |
171 | return; | |
172 | ||
173 | bgp_start_interface_nbrs(bgp, ifp); | |
a197c47c DS |
174 | } |
175 | ||
d62a17ae | 176 | static void bgp_nbr_connected_delete(struct bgp *bgp, struct nbr_connected *ifc, |
177 | int del) | |
a80beece | 178 | { |
d62a17ae | 179 | struct listnode *node, *nnode; |
180 | struct peer *peer; | |
181 | struct interface *ifp; | |
182 | ||
183 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
184 | if (peer->conf_if | |
185 | && (strcmp(peer->conf_if, ifc->ifp->name) == 0)) { | |
186 | peer->last_reset = PEER_DOWN_NBR_ADDR_DEL; | |
187 | BGP_EVENT_ADD(peer, BGP_Stop); | |
188 | } | |
189 | } | |
190 | /* Free neighbor also, if we're asked to. */ | |
191 | if (del) { | |
192 | ifp = ifc->ifp; | |
193 | listnode_delete(ifp->nbr_connected, ifc); | |
194 | nbr_connected_free(ifc); | |
195 | } | |
a80beece DS |
196 | } |
197 | ||
718e3744 | 198 | /* Inteface addition message from zebra. */ |
d62a17ae | 199 | static int bgp_interface_add(int command, struct zclient *zclient, |
200 | zebra_size_t length, vrf_id_t vrf_id) | |
718e3744 | 201 | { |
d62a17ae | 202 | struct interface *ifp; |
203 | struct bgp *bgp; | |
718e3744 | 204 | |
d62a17ae | 205 | ifp = zebra_interface_add_read(zclient->ibuf, vrf_id); |
206 | if (!ifp) // unexpected | |
207 | return 0; | |
718e3744 | 208 | |
d62a17ae | 209 | if (BGP_DEBUG(zebra, ZEBRA) && ifp) |
210 | zlog_debug("Rx Intf add VRF %u IF %s", vrf_id, ifp->name); | |
a39275d7 | 211 | |
d62a17ae | 212 | bgp = bgp_lookup_by_vrf_id(vrf_id); |
213 | if (!bgp) | |
214 | return 0; | |
4a04e5f7 | 215 | |
d62a17ae | 216 | bgp_update_interface_nbrs(bgp, ifp, ifp); |
217 | return 0; | |
718e3744 | 218 | } |
219 | ||
d62a17ae | 220 | static int bgp_interface_delete(int command, struct zclient *zclient, |
221 | zebra_size_t length, vrf_id_t vrf_id) | |
718e3744 | 222 | { |
d62a17ae | 223 | struct stream *s; |
224 | struct interface *ifp; | |
225 | struct bgp *bgp; | |
718e3744 | 226 | |
2f9123e0 DS |
227 | bgp = bgp_lookup_by_vrf_id(vrf_id); |
228 | if (!bgp) | |
229 | return 0; | |
230 | ||
d62a17ae | 231 | s = zclient->ibuf; |
232 | ifp = zebra_interface_state_read(s, vrf_id); | |
233 | if (!ifp) /* This may happen if we've just unregistered for a VRF. */ | |
234 | return 0; | |
a4499b83 | 235 | |
d62a17ae | 236 | if (BGP_DEBUG(zebra, ZEBRA)) |
237 | zlog_debug("Rx Intf del VRF %u IF %s", vrf_id, ifp->name); | |
a39275d7 | 238 | |
d62a17ae | 239 | bgp_update_interface_nbrs(bgp, ifp, NULL); |
64745052 | 240 | |
ff880b78 | 241 | if_set_index(ifp, IFINDEX_INTERNAL); |
d62a17ae | 242 | return 0; |
718e3744 | 243 | } |
244 | ||
d62a17ae | 245 | static int bgp_interface_up(int command, struct zclient *zclient, |
246 | zebra_size_t length, vrf_id_t vrf_id) | |
718e3744 | 247 | { |
d62a17ae | 248 | struct stream *s; |
249 | struct interface *ifp; | |
250 | struct connected *c; | |
251 | struct nbr_connected *nc; | |
252 | struct listnode *node, *nnode; | |
253 | struct bgp *bgp; | |
6aeb9e78 | 254 | |
2f9123e0 DS |
255 | bgp = bgp_lookup_by_vrf_id(vrf_id); |
256 | if (!bgp) | |
257 | return 0; | |
258 | ||
d62a17ae | 259 | s = zclient->ibuf; |
260 | ifp = zebra_interface_state_read(s, vrf_id); | |
718e3744 | 261 | |
d62a17ae | 262 | if (!ifp) |
263 | return 0; | |
718e3744 | 264 | |
d62a17ae | 265 | if (BGP_DEBUG(zebra, ZEBRA)) |
266 | zlog_debug("Rx Intf up VRF %u IF %s", vrf_id, ifp->name); | |
ad4cbda1 | 267 | |
d62a17ae | 268 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c)) |
269 | bgp_connected_add(bgp, c); | |
718e3744 | 270 | |
d62a17ae | 271 | for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc)) |
272 | bgp_nbr_connected_add(bgp, nc); | |
a80beece | 273 | |
d62a17ae | 274 | return 0; |
718e3744 | 275 | } |
276 | ||
d62a17ae | 277 | static int bgp_interface_down(int command, struct zclient *zclient, |
278 | zebra_size_t length, vrf_id_t vrf_id) | |
718e3744 | 279 | { |
d62a17ae | 280 | struct stream *s; |
281 | struct interface *ifp; | |
282 | struct connected *c; | |
283 | struct nbr_connected *nc; | |
284 | struct listnode *node, *nnode; | |
285 | struct bgp *bgp; | |
6aeb9e78 | 286 | |
2f9123e0 DS |
287 | bgp = bgp_lookup_by_vrf_id(vrf_id); |
288 | if (!bgp) | |
289 | return 0; | |
290 | ||
d62a17ae | 291 | s = zclient->ibuf; |
292 | ifp = zebra_interface_state_read(s, vrf_id); | |
293 | if (!ifp) | |
294 | return 0; | |
718e3744 | 295 | |
d62a17ae | 296 | if (BGP_DEBUG(zebra, ZEBRA)) |
297 | zlog_debug("Rx Intf down VRF %u IF %s", vrf_id, ifp->name); | |
ad4cbda1 | 298 | |
d62a17ae | 299 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c)) |
300 | bgp_connected_delete(bgp, c); | |
718e3744 | 301 | |
d62a17ae | 302 | for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc)) |
303 | bgp_nbr_connected_delete(bgp, nc, 1); | |
a80beece | 304 | |
d62a17ae | 305 | /* Fast external-failover */ |
306 | { | |
307 | struct peer *peer; | |
718e3744 | 308 | |
d62a17ae | 309 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) |
310 | return 0; | |
718e3744 | 311 | |
d62a17ae | 312 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { |
8c4f6381 | 313 | #if defined(HAVE_CUMULUS) |
d62a17ae | 314 | /* Take down directly connected EBGP peers as well as |
315 | * 1-hop BFD | |
316 | * tracked (directly connected) IBGP peers. | |
317 | */ | |
318 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1) | |
319 | && (!peer->bfd_info | |
320 | || bgp_bfd_is_peer_multihop(peer))) | |
8c4f6381 | 321 | #else |
d62a17ae | 322 | /* Take down directly connected EBGP peers */ |
323 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) | |
8c4f6381 | 324 | #endif |
d62a17ae | 325 | continue; |
718e3744 | 326 | |
d62a17ae | 327 | if (ifp == peer->nexthop.ifp) { |
328 | BGP_EVENT_ADD(peer, BGP_Stop); | |
329 | peer->last_reset = PEER_DOWN_IF_DOWN; | |
330 | } | |
331 | } | |
332 | } | |
718e3744 | 333 | |
d62a17ae | 334 | return 0; |
718e3744 | 335 | } |
336 | ||
d62a17ae | 337 | static int bgp_interface_address_add(int command, struct zclient *zclient, |
338 | zebra_size_t length, vrf_id_t vrf_id) | |
718e3744 | 339 | { |
d62a17ae | 340 | struct connected *ifc; |
2f9123e0 DS |
341 | struct bgp *bgp; |
342 | ||
343 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
344 | if (!bgp) | |
345 | return 0; | |
d62a17ae | 346 | |
347 | ifc = zebra_interface_address_read(command, zclient->ibuf, vrf_id); | |
348 | ||
349 | if (ifc == NULL) | |
350 | return 0; | |
351 | ||
352 | if (bgp_debug_zebra(ifc->address)) { | |
353 | char buf[PREFIX2STR_BUFFER]; | |
354 | prefix2str(ifc->address, buf, sizeof(buf)); | |
355 | zlog_debug("Rx Intf address add VRF %u IF %s addr %s", vrf_id, | |
356 | ifc->ifp->name, buf); | |
357 | } | |
358 | ||
359 | if (if_is_operative(ifc->ifp)) { | |
d62a17ae | 360 | bgp_connected_add(bgp, ifc); |
2f9123e0 | 361 | |
d62a17ae | 362 | /* If we have learnt of any neighbors on this interface, |
363 | * check to kick off any BGP interface-based neighbors, | |
364 | * but only if this is a link-local address. | |
365 | */ | |
366 | if (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6) | |
367 | && !list_isempty(ifc->ifp->nbr_connected)) | |
368 | bgp_start_interface_nbrs(bgp, ifc->ifp); | |
369 | } | |
370 | ||
371 | return 0; | |
718e3744 | 372 | } |
373 | ||
d62a17ae | 374 | static int bgp_interface_address_delete(int command, struct zclient *zclient, |
375 | zebra_size_t length, vrf_id_t vrf_id) | |
718e3744 | 376 | { |
d62a17ae | 377 | struct connected *ifc; |
378 | struct bgp *bgp; | |
6aeb9e78 | 379 | |
2f9123e0 DS |
380 | bgp = bgp_lookup_by_vrf_id(vrf_id); |
381 | if (!bgp) | |
382 | return 0; | |
383 | ||
d62a17ae | 384 | ifc = zebra_interface_address_read(command, zclient->ibuf, vrf_id); |
718e3744 | 385 | |
d62a17ae | 386 | if (ifc == NULL) |
387 | return 0; | |
718e3744 | 388 | |
d62a17ae | 389 | if (bgp_debug_zebra(ifc->address)) { |
390 | char buf[PREFIX2STR_BUFFER]; | |
391 | prefix2str(ifc->address, buf, sizeof(buf)); | |
392 | zlog_debug("Rx Intf address del VRF %u IF %s addr %s", vrf_id, | |
393 | ifc->ifp->name, buf); | |
394 | } | |
a39275d7 | 395 | |
d62a17ae | 396 | if (if_is_operative(ifc->ifp)) { |
2f9123e0 | 397 | bgp_connected_delete(bgp, ifc); |
d62a17ae | 398 | } |
718e3744 | 399 | |
d62a17ae | 400 | connected_free(ifc); |
718e3744 | 401 | |
d62a17ae | 402 | return 0; |
718e3744 | 403 | } |
404 | ||
d62a17ae | 405 | static int bgp_interface_nbr_address_add(int command, struct zclient *zclient, |
406 | zebra_size_t length, vrf_id_t vrf_id) | |
a80beece | 407 | { |
d62a17ae | 408 | struct nbr_connected *ifc = NULL; |
409 | struct bgp *bgp; | |
410 | ||
411 | ifc = zebra_interface_nbr_address_read(command, zclient->ibuf, vrf_id); | |
412 | ||
413 | if (ifc == NULL) | |
414 | return 0; | |
415 | ||
416 | if (bgp_debug_zebra(ifc->address)) { | |
417 | char buf[PREFIX2STR_BUFFER]; | |
418 | prefix2str(ifc->address, buf, sizeof(buf)); | |
419 | zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %s", vrf_id, | |
420 | ifc->ifp->name, buf); | |
421 | } | |
422 | ||
423 | if (if_is_operative(ifc->ifp)) { | |
424 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
425 | if (bgp) | |
426 | bgp_nbr_connected_add(bgp, ifc); | |
427 | } | |
428 | ||
429 | return 0; | |
a80beece DS |
430 | } |
431 | ||
d62a17ae | 432 | static int bgp_interface_nbr_address_delete(int command, |
433 | struct zclient *zclient, | |
434 | zebra_size_t length, | |
435 | vrf_id_t vrf_id) | |
a80beece | 436 | { |
d62a17ae | 437 | struct nbr_connected *ifc = NULL; |
438 | struct bgp *bgp; | |
6aeb9e78 | 439 | |
d62a17ae | 440 | ifc = zebra_interface_nbr_address_read(command, zclient->ibuf, vrf_id); |
a80beece | 441 | |
d62a17ae | 442 | if (ifc == NULL) |
443 | return 0; | |
a80beece | 444 | |
d62a17ae | 445 | if (bgp_debug_zebra(ifc->address)) { |
446 | char buf[PREFIX2STR_BUFFER]; | |
447 | prefix2str(ifc->address, buf, sizeof(buf)); | |
448 | zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %s", vrf_id, | |
449 | ifc->ifp->name, buf); | |
450 | } | |
a80beece | 451 | |
d62a17ae | 452 | if (if_is_operative(ifc->ifp)) { |
453 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
454 | if (bgp) | |
455 | bgp_nbr_connected_delete(bgp, ifc, 0); | |
456 | } | |
a80beece | 457 | |
d62a17ae | 458 | nbr_connected_free(ifc); |
a80beece | 459 | |
d62a17ae | 460 | return 0; |
a80beece DS |
461 | } |
462 | ||
bfcd43b2 | 463 | /* VRF update for an interface. */ |
d62a17ae | 464 | static int bgp_interface_vrf_update(int command, struct zclient *zclient, |
465 | zebra_size_t length, vrf_id_t vrf_id) | |
bfcd43b2 | 466 | { |
d62a17ae | 467 | struct interface *ifp; |
468 | vrf_id_t new_vrf_id; | |
469 | struct connected *c; | |
470 | struct nbr_connected *nc; | |
471 | struct listnode *node, *nnode; | |
472 | struct bgp *bgp; | |
bfcd43b2 | 473 | |
d62a17ae | 474 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, |
475 | &new_vrf_id); | |
476 | if (!ifp) | |
477 | return 0; | |
bfcd43b2 | 478 | |
d62a17ae | 479 | if (BGP_DEBUG(zebra, ZEBRA) && ifp) |
480 | zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", vrf_id, | |
481 | ifp->name, new_vrf_id); | |
bfcd43b2 | 482 | |
d62a17ae | 483 | bgp = bgp_lookup_by_vrf_id(vrf_id); |
484 | if (!bgp) | |
485 | return 0; | |
bfcd43b2 | 486 | |
d62a17ae | 487 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c)) |
488 | bgp_connected_delete(bgp, c); | |
bfcd43b2 | 489 | |
d62a17ae | 490 | for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc)) |
491 | bgp_nbr_connected_delete(bgp, nc, 1); | |
bfcd43b2 | 492 | |
d62a17ae | 493 | /* Fast external-failover */ |
494 | { | |
495 | struct peer *peer; | |
bfcd43b2 | 496 | |
d62a17ae | 497 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) |
498 | return 0; | |
bfcd43b2 | 499 | |
d62a17ae | 500 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { |
501 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) | |
502 | continue; | |
bfcd43b2 | 503 | |
d62a17ae | 504 | if (ifp == peer->nexthop.ifp) |
505 | BGP_EVENT_ADD(peer, BGP_Stop); | |
506 | } | |
507 | } | |
bfcd43b2 | 508 | |
d62a17ae | 509 | if_update_to_new_vrf(ifp, new_vrf_id); |
bfcd43b2 | 510 | |
d62a17ae | 511 | bgp = bgp_lookup_by_vrf_id(new_vrf_id); |
512 | if (!bgp) | |
513 | return 0; | |
bfcd43b2 | 514 | |
d62a17ae | 515 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c)) |
516 | bgp_connected_add(bgp, c); | |
bfcd43b2 | 517 | |
d62a17ae | 518 | for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc)) |
519 | bgp_nbr_connected_add(bgp, nc); | |
520 | return 0; | |
bfcd43b2 | 521 | } |
522 | ||
718e3744 | 523 | /* Zebra route add and delete treatment. */ |
74489921 RW |
524 | static int zebra_read_route(int command, struct zclient *zclient, |
525 | zebra_size_t length, vrf_id_t vrf_id) | |
718e3744 | 526 | { |
9de1f7ff | 527 | enum nexthop_types_t nhtype; |
74489921 RW |
528 | struct zapi_route api; |
529 | union g_addr nexthop; | |
9de1f7ff | 530 | ifindex_t ifindex; |
74489921 | 531 | int add, i; |
d62a17ae | 532 | struct bgp *bgp; |
533 | ||
534 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
535 | if (!bgp) | |
536 | return 0; | |
537 | ||
74489921 RW |
538 | if (zapi_route_decode(zclient->ibuf, &api) < 0) |
539 | return -1; | |
d62a17ae | 540 | |
74489921 RW |
541 | /* we completely ignore srcdest routes for now. */ |
542 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
543 | return 0; | |
d62a17ae | 544 | |
74489921 RW |
545 | /* ignore link-local address. */ |
546 | if (api.prefix.family == AF_INET6 | |
547 | && IN6_IS_ADDR_LINKLOCAL(&api.prefix.u.prefix6)) | |
548 | return 0; | |
d62a17ae | 549 | |
74489921 RW |
550 | nexthop = api.nexthops[0].gate; |
551 | ifindex = api.nexthops[0].ifindex; | |
9de1f7ff | 552 | nhtype = api.nexthops[0].type; |
d62a17ae | 553 | |
74489921 RW |
554 | add = (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD); |
555 | if (add) { | |
d62a17ae | 556 | /* |
557 | * The ADD message is actually an UPDATE and there is no | |
558 | * explicit DEL | |
559 | * for a prior redistributed route, if any. So, perform an | |
560 | * implicit | |
561 | * DEL processing for the same redistributed route from any | |
562 | * other | |
563 | * source type. | |
564 | */ | |
565 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) { | |
566 | if (i != api.type) | |
74489921 | 567 | bgp_redistribute_delete(bgp, &api.prefix, i, |
d62a17ae | 568 | api.instance); |
569 | } | |
570 | ||
571 | /* Now perform the add/update. */ | |
74489921 | 572 | bgp_redistribute_add(bgp, &api.prefix, &nexthop, ifindex, |
9de1f7ff DS |
573 | nhtype, api.metric, api.type, |
574 | api.instance, api.tag); | |
d62a17ae | 575 | } else { |
74489921 RW |
576 | bgp_redistribute_delete(bgp, &api.prefix, api.type, |
577 | api.instance); | |
a39275d7 | 578 | } |
d62a17ae | 579 | |
74489921 RW |
580 | if (bgp_debug_zebra(&api.prefix)) { |
581 | char buf[2][PREFIX_STRLEN]; | |
582 | ||
583 | prefix2str(&api.prefix, buf[0], sizeof(buf[0])); | |
584 | inet_ntop(api.prefix.family, &nexthop, buf[1], sizeof(buf[1])); | |
585 | zlog_debug( | |
586 | "Rx route %s VRF %u %s[%d] %s " | |
587 | "nexthop %s metric %u tag %" ROUTE_TAG_PRI, | |
588 | (add) ? "add" : "delete", vrf_id, | |
589 | zebra_route_string(api.type), api.instance, buf[0], | |
590 | buf[1], api.metric, api.tag); | |
d62a17ae | 591 | } |
592 | ||
593 | return 0; | |
718e3744 | 594 | } |
6b0655a2 | 595 | |
d62a17ae | 596 | struct interface *if_lookup_by_ipv4(struct in_addr *addr, vrf_id_t vrf_id) |
718e3744 | 597 | { |
f4e14fdb | 598 | struct vrf *vrf; |
d62a17ae | 599 | struct listnode *cnode; |
600 | struct interface *ifp; | |
601 | struct connected *connected; | |
602 | struct prefix_ipv4 p; | |
603 | struct prefix *cp; | |
604 | ||
f4e14fdb RW |
605 | vrf = vrf_lookup_by_id(vrf_id); |
606 | if (!vrf) | |
607 | return NULL; | |
608 | ||
d62a17ae | 609 | p.family = AF_INET; |
610 | p.prefix = *addr; | |
611 | p.prefixlen = IPV4_MAX_BITLEN; | |
612 | ||
451fda4f | 613 | FOR_ALL_INTERFACES (vrf, ifp) { |
d62a17ae | 614 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { |
615 | cp = connected->address; | |
616 | ||
617 | if (cp->family == AF_INET) | |
618 | if (prefix_match(cp, (struct prefix *)&p)) | |
619 | return ifp; | |
620 | } | |
718e3744 | 621 | } |
d62a17ae | 622 | return NULL; |
718e3744 | 623 | } |
624 | ||
d62a17ae | 625 | struct interface *if_lookup_by_ipv4_exact(struct in_addr *addr, vrf_id_t vrf_id) |
718e3744 | 626 | { |
f4e14fdb | 627 | struct vrf *vrf; |
d62a17ae | 628 | struct listnode *cnode; |
629 | struct interface *ifp; | |
630 | struct connected *connected; | |
631 | struct prefix *cp; | |
632 | ||
f4e14fdb RW |
633 | vrf = vrf_lookup_by_id(vrf_id); |
634 | if (!vrf) | |
635 | return NULL; | |
636 | ||
451fda4f | 637 | FOR_ALL_INTERFACES (vrf, ifp) { |
d62a17ae | 638 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { |
639 | cp = connected->address; | |
640 | ||
641 | if (cp->family == AF_INET) | |
642 | if (IPV4_ADDR_SAME(&cp->u.prefix4, addr)) | |
643 | return ifp; | |
644 | } | |
718e3744 | 645 | } |
d62a17ae | 646 | return NULL; |
718e3744 | 647 | } |
648 | ||
d62a17ae | 649 | struct interface *if_lookup_by_ipv6(struct in6_addr *addr, ifindex_t ifindex, |
650 | vrf_id_t vrf_id) | |
718e3744 | 651 | { |
f4e14fdb | 652 | struct vrf *vrf; |
d62a17ae | 653 | struct listnode *cnode; |
654 | struct interface *ifp; | |
655 | struct connected *connected; | |
656 | struct prefix_ipv6 p; | |
657 | struct prefix *cp; | |
658 | ||
f4e14fdb RW |
659 | vrf = vrf_lookup_by_id(vrf_id); |
660 | if (!vrf) | |
661 | return NULL; | |
662 | ||
d62a17ae | 663 | p.family = AF_INET6; |
664 | p.prefix = *addr; | |
665 | p.prefixlen = IPV6_MAX_BITLEN; | |
666 | ||
451fda4f | 667 | FOR_ALL_INTERFACES (vrf, ifp) { |
d62a17ae | 668 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { |
669 | cp = connected->address; | |
670 | ||
671 | if (cp->family == AF_INET6) | |
672 | if (prefix_match(cp, (struct prefix *)&p)) { | |
673 | if (IN6_IS_ADDR_LINKLOCAL( | |
674 | &cp->u.prefix6)) { | |
675 | if (ifindex == ifp->ifindex) | |
676 | return ifp; | |
677 | } else | |
678 | return ifp; | |
679 | } | |
680 | } | |
718e3744 | 681 | } |
d62a17ae | 682 | return NULL; |
718e3744 | 683 | } |
684 | ||
d62a17ae | 685 | struct interface *if_lookup_by_ipv6_exact(struct in6_addr *addr, |
686 | ifindex_t ifindex, vrf_id_t vrf_id) | |
718e3744 | 687 | { |
f4e14fdb | 688 | struct vrf *vrf; |
d62a17ae | 689 | struct listnode *cnode; |
690 | struct interface *ifp; | |
691 | struct connected *connected; | |
692 | struct prefix *cp; | |
693 | ||
f4e14fdb RW |
694 | vrf = vrf_lookup_by_id(vrf_id); |
695 | if (!vrf) | |
696 | return NULL; | |
697 | ||
451fda4f | 698 | FOR_ALL_INTERFACES (vrf, ifp) { |
d62a17ae | 699 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { |
700 | cp = connected->address; | |
701 | ||
702 | if (cp->family == AF_INET6) | |
703 | if (IPV6_ADDR_SAME(&cp->u.prefix6, addr)) { | |
704 | if (IN6_IS_ADDR_LINKLOCAL( | |
705 | &cp->u.prefix6)) { | |
706 | if (ifindex == ifp->ifindex) | |
707 | return ifp; | |
708 | } else | |
709 | return ifp; | |
710 | } | |
711 | } | |
718e3744 | 712 | } |
d62a17ae | 713 | return NULL; |
718e3744 | 714 | } |
715 | ||
d62a17ae | 716 | static int if_get_ipv6_global(struct interface *ifp, struct in6_addr *addr) |
718e3744 | 717 | { |
d62a17ae | 718 | struct listnode *cnode; |
719 | struct connected *connected; | |
720 | struct prefix *cp; | |
721 | ||
722 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
723 | cp = connected->address; | |
724 | ||
725 | if (cp->family == AF_INET6) | |
726 | if (!IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) { | |
727 | memcpy(addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
728 | return 1; | |
729 | } | |
730 | } | |
731 | return 0; | |
718e3744 | 732 | } |
733 | ||
d62a17ae | 734 | static int if_get_ipv6_local(struct interface *ifp, struct in6_addr *addr) |
718e3744 | 735 | { |
d62a17ae | 736 | struct listnode *cnode; |
737 | struct connected *connected; | |
738 | struct prefix *cp; | |
739 | ||
740 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
741 | cp = connected->address; | |
742 | ||
743 | if (cp->family == AF_INET6) | |
744 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) { | |
745 | memcpy(addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
746 | return 1; | |
747 | } | |
748 | } | |
749 | return 0; | |
718e3744 | 750 | } |
718e3744 | 751 | |
d62a17ae | 752 | static int if_get_ipv4_address(struct interface *ifp, struct in_addr *addr) |
6ee06fa9 | 753 | { |
d62a17ae | 754 | struct listnode *cnode; |
755 | struct connected *connected; | |
756 | struct prefix *cp; | |
757 | ||
758 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { | |
759 | cp = connected->address; | |
760 | if ((cp->family == AF_INET) | |
761 | && !ipv4_martian(&(cp->u.prefix4))) { | |
762 | *addr = cp->u.prefix4; | |
763 | return 1; | |
764 | } | |
765 | } | |
766 | return 0; | |
6ee06fa9 PM |
767 | } |
768 | ||
d62a17ae | 769 | int bgp_nexthop_set(union sockunion *local, union sockunion *remote, |
770 | struct bgp_nexthop *nexthop, struct peer *peer) | |
718e3744 | 771 | { |
d62a17ae | 772 | int ret = 0; |
773 | struct interface *ifp = NULL; | |
774 | ||
775 | memset(nexthop, 0, sizeof(struct bgp_nexthop)); | |
776 | ||
777 | if (!local) | |
778 | return -1; | |
779 | if (!remote) | |
780 | return -1; | |
781 | ||
782 | if (local->sa.sa_family == AF_INET) { | |
783 | nexthop->v4 = local->sin.sin_addr; | |
784 | if (peer->update_if) | |
785 | ifp = if_lookup_by_name(peer->update_if, | |
786 | peer->bgp->vrf_id); | |
787 | else | |
788 | ifp = if_lookup_by_ipv4_exact(&local->sin.sin_addr, | |
789 | peer->bgp->vrf_id); | |
718e3744 | 790 | } |
d62a17ae | 791 | if (local->sa.sa_family == AF_INET6) { |
792 | if (IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)) { | |
793 | if (peer->conf_if || peer->ifname) | |
794 | ifp = if_lookup_by_name(peer->conf_if | |
795 | ? peer->conf_if | |
796 | : peer->ifname, | |
797 | peer->bgp->vrf_id); | |
798 | } else if (peer->update_if) | |
799 | ifp = if_lookup_by_name(peer->update_if, | |
800 | peer->bgp->vrf_id); | |
801 | else | |
802 | ifp = if_lookup_by_ipv6_exact(&local->sin6.sin6_addr, | |
803 | local->sin6.sin6_scope_id, | |
804 | peer->bgp->vrf_id); | |
718e3744 | 805 | } |
d62a17ae | 806 | |
807 | if (!ifp) | |
808 | return -1; | |
809 | ||
810 | nexthop->ifp = ifp; | |
811 | ||
812 | /* IPv4 connection, fetch and store IPv6 local address(es) if any. */ | |
813 | if (local->sa.sa_family == AF_INET) { | |
814 | /* IPv6 nexthop*/ | |
815 | ret = if_get_ipv6_global(ifp, &nexthop->v6_global); | |
816 | ||
817 | if (!ret) { | |
818 | /* There is no global nexthop. Use link-local address as | |
819 | * both the | |
820 | * global and link-local nexthop. In this scenario, the | |
821 | * expectation | |
822 | * for interop is that the network admin would use a | |
823 | * route-map to | |
824 | * specify the global IPv6 nexthop. | |
825 | */ | |
826 | if_get_ipv6_local(ifp, &nexthop->v6_global); | |
827 | memcpy(&nexthop->v6_local, &nexthop->v6_global, | |
828 | IPV6_MAX_BYTELEN); | |
829 | } else | |
830 | if_get_ipv6_local(ifp, &nexthop->v6_local); | |
831 | ||
832 | if (if_lookup_by_ipv4(&remote->sin.sin_addr, peer->bgp->vrf_id)) | |
833 | peer->shared_network = 1; | |
834 | else | |
835 | peer->shared_network = 0; | |
718e3744 | 836 | } |
718e3744 | 837 | |
d62a17ae | 838 | /* IPv6 connection, fetch and store IPv4 local address if any. */ |
839 | if (local->sa.sa_family == AF_INET6) { | |
840 | struct interface *direct = NULL; | |
841 | ||
842 | /* IPv4 nexthop. */ | |
843 | ret = if_get_ipv4_address(ifp, &nexthop->v4); | |
844 | if (!ret && peer->local_id.s_addr) | |
845 | nexthop->v4 = peer->local_id; | |
846 | ||
847 | /* Global address*/ | |
848 | if (!IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)) { | |
849 | memcpy(&nexthop->v6_global, &local->sin6.sin6_addr, | |
850 | IPV6_MAX_BYTELEN); | |
851 | ||
852 | /* If directory connected set link-local address. */ | |
853 | direct = if_lookup_by_ipv6(&remote->sin6.sin6_addr, | |
854 | remote->sin6.sin6_scope_id, | |
855 | peer->bgp->vrf_id); | |
856 | if (direct) | |
857 | if_get_ipv6_local(ifp, &nexthop->v6_local); | |
858 | } else | |
859 | /* Link-local address. */ | |
860 | { | |
861 | ret = if_get_ipv6_global(ifp, &nexthop->v6_global); | |
862 | ||
863 | /* If there is no global address. Set link-local | |
864 | address as | |
865 | global. I know this break RFC specification... */ | |
866 | /* In this scenario, the expectation for interop is that | |
867 | * the | |
868 | * network admin would use a route-map to specify the | |
869 | * global | |
870 | * IPv6 nexthop. | |
871 | */ | |
872 | if (!ret) | |
873 | memcpy(&nexthop->v6_global, | |
874 | &local->sin6.sin6_addr, | |
875 | IPV6_MAX_BYTELEN); | |
876 | /* Always set the link-local address */ | |
877 | memcpy(&nexthop->v6_local, &local->sin6.sin6_addr, | |
878 | IPV6_MAX_BYTELEN); | |
879 | } | |
880 | ||
881 | if (IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr) | |
882 | || if_lookup_by_ipv6(&remote->sin6.sin6_addr, | |
883 | remote->sin6.sin6_scope_id, | |
884 | peer->bgp->vrf_id)) | |
885 | peer->shared_network = 1; | |
886 | else | |
887 | peer->shared_network = 0; | |
888 | } | |
718e3744 | 889 | |
d62a17ae | 890 | /* KAME stack specific treatment. */ |
718e3744 | 891 | #ifdef KAME |
d62a17ae | 892 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->v6_global) |
893 | && IN6_LINKLOCAL_IFINDEX(nexthop->v6_global)) { | |
894 | SET_IN6_LINKLOCAL_IFINDEX(nexthop->v6_global, 0); | |
895 | } | |
896 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->v6_local) | |
897 | && IN6_LINKLOCAL_IFINDEX(nexthop->v6_local)) { | |
898 | SET_IN6_LINKLOCAL_IFINDEX(nexthop->v6_local, 0); | |
899 | } | |
718e3744 | 900 | #endif /* KAME */ |
e33a4880 | 901 | |
d62a17ae | 902 | /* If we have identified the local interface, there is no error for now. |
903 | */ | |
904 | return 0; | |
718e3744 | 905 | } |
906 | ||
d62a17ae | 907 | static struct in6_addr *bgp_info_to_ipv6_nexthop(struct bgp_info *info) |
73ac8160 | 908 | { |
d62a17ae | 909 | struct in6_addr *nexthop = NULL; |
910 | ||
911 | /* Only global address nexthop exists. */ | |
912 | if (info->attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL) | |
913 | nexthop = &info->attr->mp_nexthop_global; | |
914 | ||
915 | /* If both global and link-local address present. */ | |
916 | if (info->attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) { | |
917 | /* Check if route-map is set to prefer global over link-local */ | |
918 | if (info->attr->mp_nexthop_prefer_global) | |
919 | nexthop = &info->attr->mp_nexthop_global; | |
920 | else { | |
921 | /* Workaround for Cisco's nexthop bug. */ | |
922 | if (IN6_IS_ADDR_UNSPECIFIED( | |
923 | &info->attr->mp_nexthop_global) | |
924 | && info->peer->su_remote->sa.sa_family == AF_INET6) | |
925 | nexthop = | |
926 | &info->peer->su_remote->sin6.sin6_addr; | |
927 | else | |
928 | nexthop = &info->attr->mp_nexthop_local; | |
929 | } | |
930 | } | |
931 | ||
932 | return nexthop; | |
73ac8160 DS |
933 | } |
934 | ||
d62a17ae | 935 | static int bgp_table_map_apply(struct route_map *map, struct prefix *p, |
936 | struct bgp_info *info) | |
73ac8160 | 937 | { |
b4cb15c6 DL |
938 | route_map_result_t ret; |
939 | ||
940 | ret = route_map_apply(map, p, RMAP_BGP, info); | |
941 | bgp_attr_flush(info->attr); | |
942 | ||
943 | if (ret != RMAP_DENYMATCH) | |
d62a17ae | 944 | return 1; |
945 | ||
946 | if (bgp_debug_zebra(p)) { | |
947 | if (p->family == AF_INET) { | |
948 | char buf[2][INET_ADDRSTRLEN]; | |
949 | zlog_debug( | |
950 | "Zebra rmap deny: IPv4 route %s/%d nexthop %s", | |
951 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], | |
952 | sizeof(buf[0])), | |
953 | p->prefixlen, | |
954 | inet_ntop(AF_INET, &info->attr->nexthop, buf[1], | |
955 | sizeof(buf[1]))); | |
956 | } | |
957 | if (p->family == AF_INET6) { | |
958 | char buf[2][INET6_ADDRSTRLEN]; | |
959 | zlog_debug( | |
960 | "Zebra rmap deny: IPv6 route %s/%d nexthop %s", | |
961 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], | |
962 | sizeof(buf[0])), | |
963 | p->prefixlen, | |
964 | inet_ntop(AF_INET6, | |
965 | bgp_info_to_ipv6_nexthop(info), | |
966 | buf[1], sizeof(buf[1]))); | |
967 | } | |
968 | } | |
969 | return 0; | |
73ac8160 DS |
970 | } |
971 | ||
d62a17ae | 972 | void bgp_zebra_announce(struct bgp_node *rn, struct prefix *p, |
973 | struct bgp_info *info, struct bgp *bgp, afi_t afi, | |
974 | safi_t safi) | |
718e3744 | 975 | { |
9913029c RW |
976 | struct zapi_route api; |
977 | struct zapi_nexthop *api_nh; | |
2ad4f093 | 978 | int nh_family; |
a74e593b | 979 | unsigned int valid_nh_count = 0; |
2ad4f093 | 980 | int has_valid_label = 0; |
d62a17ae | 981 | u_char distance; |
982 | struct peer *peer; | |
983 | struct bgp_info *mpinfo; | |
984 | u_int32_t metric; | |
b4cb15c6 | 985 | struct attr local_attr; |
d62a17ae | 986 | struct bgp_info local_info; |
b4cb15c6 | 987 | struct bgp_info *mpinfo_cp = &local_info; |
d62a17ae | 988 | route_tag_t tag; |
989 | mpls_label_t label; | |
990 | ||
991 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't | |
992 | * know of this instance. | |
993 | */ | |
994 | if (!bgp_install_info_to_zebra(bgp)) | |
995 | return; | |
996 | ||
d62a17ae | 997 | if (bgp->main_zebra_update_hold) |
998 | return; | |
999 | ||
9913029c RW |
1000 | /* Make Zebra API structure. */ |
1001 | memset(&api, 0, sizeof(api)); | |
1002 | api.vrf_id = bgp->vrf_id; | |
1003 | api.type = ZEBRA_ROUTE_BGP; | |
1004 | api.safi = safi; | |
1005 | api.prefix = *p; | |
1006 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
1007 | ||
d62a17ae | 1008 | peer = info->peer; |
1009 | ||
1010 | tag = info->attr->tag; | |
1011 | ||
1012 | /* When we create an aggregate route we must also install a Null0 route | |
1013 | * in | |
1014 | * the RIB */ | |
1015 | if (info->sub_type == BGP_ROUTE_AGGREGATE) | |
09a484dd | 1016 | zapi_route_set_blackhole(&api, BLACKHOLE_NULL); |
d62a17ae | 1017 | |
1018 | if (peer->sort == BGP_PEER_IBGP || peer->sort == BGP_PEER_CONFED | |
1019 | || info->sub_type == BGP_ROUTE_AGGREGATE) { | |
9913029c RW |
1020 | SET_FLAG(api.flags, ZEBRA_FLAG_IBGP); |
1021 | SET_FLAG(api.flags, ZEBRA_FLAG_INTERNAL); | |
718e3744 | 1022 | } |
a39275d7 | 1023 | |
d62a17ae | 1024 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
1025 | || CHECK_FLAG(peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) | |
1026 | || bgp_flag_check(bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
1027 | ||
9913029c | 1028 | SET_FLAG(api.flags, ZEBRA_FLAG_INTERNAL); |
d62a17ae | 1029 | |
2ad4f093 RW |
1030 | /* Metric is currently based on the best-path only */ |
1031 | metric = info->attr->med; | |
1032 | for (mpinfo = info; mpinfo; mpinfo = bgp_info_mpath_next(mpinfo)) { | |
a74e593b RW |
1033 | if (valid_nh_count >= multipath_num) |
1034 | break; | |
1035 | ||
b4cb15c6 DL |
1036 | *mpinfo_cp = *mpinfo; |
1037 | ||
d0d695f4 RW |
1038 | /* Get nexthop address-family */ |
1039 | if (p->family == AF_INET | |
1040 | && !BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp->attr)) | |
1041 | nh_family = AF_INET; | |
1042 | else if (p->family == AF_INET6 | |
1043 | || (p->family == AF_INET | |
1044 | && BGP_ATTR_NEXTHOP_AFI_IP6(mpinfo_cp->attr))) | |
1045 | nh_family = AF_INET6; | |
1046 | else | |
1047 | continue; | |
1048 | ||
2ad4f093 RW |
1049 | if (nh_family == AF_INET) { |
1050 | struct in_addr *nexthop; | |
d62a17ae | 1051 | |
d62a17ae | 1052 | if (bgp->table_map[afi][safi].name) { |
1053 | /* Copy info and attributes, so the route-map | |
b4cb15c6 DL |
1054 | apply doesn't modify the BGP route info. */ |
1055 | local_attr = *mpinfo->attr; | |
1056 | mpinfo_cp->attr = &local_attr; | |
1057 | ||
1058 | if (!bgp_table_map_apply( | |
d62a17ae | 1059 | bgp->table_map[afi][safi].map, p, |
b4cb15c6 DL |
1060 | mpinfo_cp)) |
1061 | continue; | |
1062 | ||
1063 | /* metric/tag is only allowed to be | |
1064 | * overridden on 1st nexthop */ | |
1065 | if (mpinfo == info) { | |
1066 | metric = mpinfo_cp->attr->med; | |
1067 | tag = mpinfo_cp->attr->tag; | |
d62a17ae | 1068 | } |
b4cb15c6 | 1069 | } |
d62a17ae | 1070 | |
b4cb15c6 | 1071 | nexthop = &mpinfo_cp->attr->nexthop; |
d62a17ae | 1072 | |
9913029c RW |
1073 | api_nh = &api.nexthops[valid_nh_count]; |
1074 | api_nh->gate.ipv4 = *nexthop; | |
1075 | api_nh->type = NEXTHOP_TYPE_IPV4; | |
2ad4f093 RW |
1076 | } else { |
1077 | ifindex_t ifindex; | |
1078 | struct in6_addr *nexthop; | |
9913029c | 1079 | |
d62a17ae | 1080 | ifindex = 0; |
d62a17ae | 1081 | |
1082 | if (bgp->table_map[afi][safi].name) { | |
1083 | /* Copy info and attributes, so the route-map | |
b4cb15c6 DL |
1084 | apply doesn't modify the BGP route info. */ |
1085 | local_attr = *mpinfo->attr; | |
1086 | mpinfo_cp->attr = &local_attr; | |
1087 | ||
1088 | if (!bgp_table_map_apply( | |
d62a17ae | 1089 | bgp->table_map[afi][safi].map, p, |
b4cb15c6 DL |
1090 | mpinfo_cp)) |
1091 | continue; | |
1092 | ||
1093 | /* metric/tag is only allowed to be | |
1094 | * overridden on 1st nexthop */ | |
1095 | if (mpinfo == info) { | |
1096 | metric = mpinfo_cp->attr->med; | |
1097 | tag = mpinfo_cp->attr->tag; | |
d62a17ae | 1098 | } |
b4cb15c6 DL |
1099 | } |
1100 | nexthop = bgp_info_to_ipv6_nexthop(mpinfo_cp); | |
d62a17ae | 1101 | |
1102 | if ((mpinfo == info) | |
1103 | && mpinfo->attr->mp_nexthop_len | |
1104 | == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) | |
1105 | if (mpinfo->peer->nexthop.ifp) | |
1106 | ifindex = mpinfo->peer->nexthop.ifp | |
1107 | ->ifindex; | |
1108 | ||
1109 | if (!ifindex) { | |
afb6d3f5 DS |
1110 | if (mpinfo->peer->conf_if) |
1111 | ifindex = mpinfo->peer->ifp->ifindex; | |
1112 | else if (mpinfo->peer->ifname) | |
d62a17ae | 1113 | ifindex = ifname2ifindex( |
afb6d3f5 | 1114 | mpinfo->peer->ifname, |
d62a17ae | 1115 | bgp->vrf_id); |
1116 | else if (mpinfo->peer->nexthop.ifp) | |
1117 | ifindex = mpinfo->peer->nexthop.ifp | |
1118 | ->ifindex; | |
1119 | } | |
1120 | if (ifindex == 0) | |
1121 | continue; | |
1122 | ||
9913029c RW |
1123 | api_nh = &api.nexthops[valid_nh_count]; |
1124 | api_nh->gate.ipv6 = *nexthop; | |
1125 | api_nh->ifindex = ifindex; | |
1126 | api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
2ad4f093 | 1127 | } |
d62a17ae | 1128 | |
2ad4f093 RW |
1129 | if (mpinfo->extra |
1130 | && bgp_is_valid_label(&mpinfo->extra->label)) { | |
1131 | has_valid_label = 1; | |
1132 | label = label_pton(&mpinfo->extra->label); | |
9913029c | 1133 | |
2ad4f093 RW |
1134 | api_nh->label_num = 1; |
1135 | api_nh->labels[0] = label; | |
d62a17ae | 1136 | } |
2ad4f093 RW |
1137 | valid_nh_count++; |
1138 | } | |
d62a17ae | 1139 | |
2ad4f093 RW |
1140 | if (has_valid_label) |
1141 | SET_FLAG(api.message, ZAPI_MESSAGE_LABEL); | |
d62a17ae | 1142 | |
09a484dd | 1143 | if (info->sub_type != BGP_ROUTE_AGGREGATE) |
2ad4f093 | 1144 | api.nexthop_num = valid_nh_count; |
d62a17ae | 1145 | |
2ad4f093 RW |
1146 | SET_FLAG(api.message, ZAPI_MESSAGE_METRIC); |
1147 | api.metric = metric; | |
d62a17ae | 1148 | |
2ad4f093 RW |
1149 | if (tag) { |
1150 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1151 | api.tag = tag; | |
1152 | } | |
d62a17ae | 1153 | |
2ad4f093 RW |
1154 | distance = bgp_distance_apply(p, info, afi, safi, bgp); |
1155 | if (distance) { | |
1156 | SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE); | |
1157 | api.distance = distance; | |
1158 | } | |
d62a17ae | 1159 | |
2ad4f093 RW |
1160 | if (bgp_debug_zebra(p)) { |
1161 | char prefix_buf[PREFIX_STRLEN]; | |
1162 | char nh_buf[INET6_ADDRSTRLEN]; | |
1163 | char label_buf[20]; | |
1164 | int i; | |
1165 | ||
1166 | prefix2str(&api.prefix, prefix_buf, sizeof(prefix_buf)); | |
1167 | zlog_debug("Tx route %s VRF %u %s metric %u tag %" ROUTE_TAG_PRI | |
1168 | " count %d", | |
1169 | valid_nh_count ? "add" : "delete", bgp->vrf_id, | |
1170 | prefix_buf, api.metric, api.tag, api.nexthop_num); | |
1171 | for (i = 0; i < api.nexthop_num; i++) { | |
1172 | api_nh = &api.nexthops[i]; | |
1173 | ||
d0d695f4 RW |
1174 | if (api_nh->type == NEXTHOP_TYPE_IPV4) |
1175 | nh_family = AF_INET; | |
1176 | else | |
1177 | nh_family = AF_INET6; | |
2ad4f093 RW |
1178 | inet_ntop(nh_family, &api_nh->gate, nh_buf, |
1179 | sizeof(nh_buf)); | |
1180 | ||
1181 | label_buf[0] = '\0'; | |
1182 | if (has_valid_label) | |
1183 | sprintf(label_buf, "label %u", | |
1184 | api_nh->labels[0]); | |
1185 | zlog_debug(" nhop [%d]: %s %s", i + 1, nh_buf, | |
1186 | label_buf); | |
d62a17ae | 1187 | } |
1188 | } | |
2ad4f093 RW |
1189 | |
1190 | zclient_route_send(valid_nh_count ? ZEBRA_ROUTE_ADD | |
1191 | : ZEBRA_ROUTE_DELETE, | |
1192 | zclient, &api); | |
718e3744 | 1193 | } |
1194 | ||
73ac8160 | 1195 | /* Announce all routes of a table to zebra */ |
d62a17ae | 1196 | void bgp_zebra_announce_table(struct bgp *bgp, afi_t afi, safi_t safi) |
73ac8160 | 1197 | { |
d62a17ae | 1198 | struct bgp_node *rn; |
1199 | struct bgp_table *table; | |
1200 | struct bgp_info *ri; | |
1201 | ||
1202 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't | |
1203 | * know of this instance. | |
1204 | */ | |
1205 | if (!bgp_install_info_to_zebra(bgp)) | |
1206 | return; | |
1207 | ||
1208 | table = bgp->rib[afi][safi]; | |
1209 | if (!table) | |
1210 | return; | |
1211 | ||
1212 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) | |
1213 | for (ri = rn->info; ri; ri = ri->next) | |
1214 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) | |
1215 | && ri->type == ZEBRA_ROUTE_BGP | |
1216 | && ri->sub_type == BGP_ROUTE_NORMAL) | |
1217 | bgp_zebra_announce(rn, &rn->p, ri, bgp, afi, | |
1218 | safi); | |
73ac8160 DS |
1219 | } |
1220 | ||
d62a17ae | 1221 | void bgp_zebra_withdraw(struct prefix *p, struct bgp_info *info, safi_t safi) |
718e3744 | 1222 | { |
2ad4f093 | 1223 | struct zapi_route api; |
d62a17ae | 1224 | struct peer *peer; |
1225 | ||
1226 | peer = info->peer; | |
1227 | assert(peer); | |
1228 | ||
1229 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't | |
1230 | * know of this instance. | |
1231 | */ | |
1232 | if (!bgp_install_info_to_zebra(peer->bgp)) | |
1233 | return; | |
1234 | ||
2ad4f093 RW |
1235 | memset(&api, 0, sizeof(api)); |
1236 | api.vrf_id = peer->bgp->vrf_id; | |
1237 | api.type = ZEBRA_ROUTE_BGP; | |
1238 | api.safi = safi; | |
1239 | api.prefix = *p; | |
d62a17ae | 1240 | |
1241 | if (peer->sort == BGP_PEER_IBGP) { | |
2ad4f093 RW |
1242 | SET_FLAG(api.flags, ZEBRA_FLAG_INTERNAL); |
1243 | SET_FLAG(api.flags, ZEBRA_FLAG_IBGP); | |
a39275d7 AS |
1244 | } |
1245 | ||
d62a17ae | 1246 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
1247 | || CHECK_FLAG(peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) | |
1248 | || bgp_flag_check(peer->bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
2ad4f093 | 1249 | SET_FLAG(api.flags, ZEBRA_FLAG_INTERNAL); |
d62a17ae | 1250 | |
2ad4f093 RW |
1251 | if (bgp_debug_zebra(p)) { |
1252 | char buf[PREFIX_STRLEN]; | |
d62a17ae | 1253 | |
2ad4f093 RW |
1254 | prefix2str(&api.prefix, buf, sizeof(buf)); |
1255 | zlog_debug("Tx route delete VRF %u %s", peer->bgp->vrf_id, buf); | |
d62a17ae | 1256 | } |
d62a17ae | 1257 | |
2ad4f093 | 1258 | zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api); |
718e3744 | 1259 | } |
56c1f7d8 | 1260 | |
d62a17ae | 1261 | struct bgp_redist *bgp_redist_lookup(struct bgp *bgp, afi_t afi, u_char type, |
1262 | u_short instance) | |
7c8ff89e | 1263 | { |
d62a17ae | 1264 | struct list *red_list; |
1265 | struct listnode *node; | |
1266 | struct bgp_redist *red; | |
7c8ff89e | 1267 | |
d62a17ae | 1268 | red_list = bgp->redist[afi][type]; |
1269 | if (!red_list) | |
1270 | return (NULL); | |
7c8ff89e | 1271 | |
d62a17ae | 1272 | for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) |
1273 | if (red->instance == instance) | |
1274 | return red; | |
7c8ff89e | 1275 | |
d62a17ae | 1276 | return NULL; |
7c8ff89e DS |
1277 | } |
1278 | ||
d62a17ae | 1279 | struct bgp_redist *bgp_redist_add(struct bgp *bgp, afi_t afi, u_char type, |
1280 | u_short instance) | |
7c8ff89e | 1281 | { |
d62a17ae | 1282 | struct list *red_list; |
1283 | struct bgp_redist *red; | |
7c8ff89e | 1284 | |
d62a17ae | 1285 | red = bgp_redist_lookup(bgp, afi, type, instance); |
1286 | if (red) | |
1287 | return red; | |
7c8ff89e | 1288 | |
d62a17ae | 1289 | if (!bgp->redist[afi][type]) |
1290 | bgp->redist[afi][type] = list_new(); | |
7c8ff89e | 1291 | |
d62a17ae | 1292 | red_list = bgp->redist[afi][type]; |
1293 | red = (struct bgp_redist *)XCALLOC(MTYPE_BGP_REDIST, | |
1294 | sizeof(struct bgp_redist)); | |
1295 | red->instance = instance; | |
7c8ff89e | 1296 | |
d62a17ae | 1297 | listnode_add(red_list, red); |
7c8ff89e | 1298 | |
d62a17ae | 1299 | return red; |
7c8ff89e DS |
1300 | } |
1301 | ||
d62a17ae | 1302 | static void bgp_redist_del(struct bgp *bgp, afi_t afi, u_char type, |
1303 | u_short instance) | |
7c8ff89e | 1304 | { |
d62a17ae | 1305 | struct bgp_redist *red; |
1306 | ||
1307 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1308 | ||
1309 | if (red) { | |
1310 | listnode_delete(bgp->redist[afi][type], red); | |
1311 | XFREE(MTYPE_BGP_REDIST, red); | |
acdf5e25 DS |
1312 | if (!bgp->redist[afi][type]->count) |
1313 | list_delete_and_null(&bgp->redist[afi][type]); | |
d62a17ae | 1314 | } |
7c8ff89e | 1315 | } |
6b0655a2 | 1316 | |
718e3744 | 1317 | /* Other routes redistribution into BGP. */ |
d62a17ae | 1318 | int bgp_redistribute_set(struct bgp *bgp, afi_t afi, int type, u_short instance) |
718e3744 | 1319 | { |
718e3744 | 1320 | |
d62a17ae | 1321 | /* Return if already redistribute flag is set. */ |
1322 | if (instance) { | |
1323 | if (redist_check_instance(&zclient->mi_redist[afi][type], | |
1324 | instance)) | |
1325 | return CMD_WARNING; | |
718e3744 | 1326 | |
d62a17ae | 1327 | redist_add_instance(&zclient->mi_redist[afi][type], instance); |
1328 | } else { | |
1329 | if (vrf_bitmap_check(zclient->redist[afi][type], bgp->vrf_id)) | |
1330 | return CMD_WARNING; | |
7076bb2f | 1331 | |
65efcfce | 1332 | #if ENABLE_BGP_VNC |
d62a17ae | 1333 | if (bgp->vrf_id == VRF_DEFAULT |
1334 | && type == ZEBRA_ROUTE_VNC_DIRECT) { | |
1335 | vnc_export_bgp_enable( | |
1336 | bgp, afi); /* only enables if mode bits cfg'd */ | |
1337 | } | |
65efcfce LB |
1338 | #endif |
1339 | ||
d62a17ae | 1340 | vrf_bitmap_set(zclient->redist[afi][type], bgp->vrf_id); |
1341 | } | |
718e3744 | 1342 | |
ea12cf11 DS |
1343 | /* |
1344 | * Don't try to register if we're not connected to Zebra or Zebra | |
1345 | * doesn't know of this instance. | |
1346 | * | |
1347 | * When we come up later well resend if needed. | |
d62a17ae | 1348 | */ |
1349 | if (!bgp_install_info_to_zebra(bgp)) | |
ea12cf11 | 1350 | return CMD_SUCCESS; |
a39275d7 | 1351 | |
d62a17ae | 1352 | if (BGP_DEBUG(zebra, ZEBRA)) |
1353 | zlog_debug("Tx redistribute add VRF %u afi %d %s %d", | |
1354 | bgp->vrf_id, afi, zebra_route_string(type), | |
1355 | instance); | |
518f0eb1 | 1356 | |
d62a17ae | 1357 | /* Send distribute add message to zebra. */ |
1358 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, | |
1359 | instance, bgp->vrf_id); | |
718e3744 | 1360 | |
d62a17ae | 1361 | return CMD_SUCCESS; |
718e3744 | 1362 | } |
1363 | ||
d62a17ae | 1364 | int bgp_redistribute_resend(struct bgp *bgp, afi_t afi, int type, |
1365 | u_short instance) | |
518f0eb1 | 1366 | { |
d62a17ae | 1367 | /* Don't try to send if we're not connected to Zebra or Zebra doesn't |
1368 | * know of this instance. | |
1369 | */ | |
1370 | if (!bgp_install_info_to_zebra(bgp)) | |
1371 | return -1; | |
1372 | ||
1373 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1374 | zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d", | |
1375 | bgp->vrf_id, afi, zebra_route_string(type), | |
1376 | instance); | |
1377 | ||
1378 | /* Send distribute add message to zebra. */ | |
1379 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, | |
1380 | instance, bgp->vrf_id); | |
1381 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, | |
1382 | instance, bgp->vrf_id); | |
1383 | ||
1384 | return 0; | |
518f0eb1 DS |
1385 | } |
1386 | ||
718e3744 | 1387 | /* Redistribute with route-map specification. */ |
d62a17ae | 1388 | int bgp_redistribute_rmap_set(struct bgp_redist *red, const char *name) |
718e3744 | 1389 | { |
d62a17ae | 1390 | if (red->rmap.name && (strcmp(red->rmap.name, name) == 0)) |
1391 | return 0; | |
718e3744 | 1392 | |
d62a17ae | 1393 | if (red->rmap.name) |
1394 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); | |
1395 | red->rmap.name = XSTRDUP(MTYPE_ROUTE_MAP_NAME, name); | |
1396 | red->rmap.map = route_map_lookup_by_name(name); | |
718e3744 | 1397 | |
d62a17ae | 1398 | return 1; |
718e3744 | 1399 | } |
1400 | ||
1401 | /* Redistribute with metric specification. */ | |
d62a17ae | 1402 | int bgp_redistribute_metric_set(struct bgp *bgp, struct bgp_redist *red, |
1403 | afi_t afi, int type, u_int32_t metric) | |
718e3744 | 1404 | { |
d62a17ae | 1405 | struct bgp_node *rn; |
1406 | struct bgp_info *ri; | |
1407 | ||
1408 | if (red->redist_metric_flag && red->redist_metric == metric) | |
1409 | return 0; | |
1410 | ||
1411 | red->redist_metric_flag = 1; | |
1412 | red->redist_metric = metric; | |
1413 | ||
1414 | for (rn = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); rn; | |
1415 | rn = bgp_route_next(rn)) { | |
1416 | for (ri = rn->info; ri; ri = ri->next) { | |
1417 | if (ri->sub_type == BGP_ROUTE_REDISTRIBUTE | |
1418 | && ri->type == type | |
1419 | && ri->instance == red->instance) { | |
1420 | struct attr *old_attr; | |
1421 | struct attr new_attr; | |
1422 | ||
1423 | bgp_attr_dup(&new_attr, ri->attr); | |
1424 | new_attr.med = red->redist_metric; | |
1425 | old_attr = ri->attr; | |
1426 | ri->attr = bgp_attr_intern(&new_attr); | |
1427 | bgp_attr_unintern(&old_attr); | |
1428 | ||
1429 | bgp_info_set_flag(rn, ri, | |
1430 | BGP_INFO_ATTR_CHANGED); | |
1431 | bgp_process(bgp, rn, afi, SAFI_UNICAST); | |
1432 | } | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | return 1; | |
718e3744 | 1437 | } |
1438 | ||
1439 | /* Unset redistribution. */ | |
d62a17ae | 1440 | int bgp_redistribute_unreg(struct bgp *bgp, afi_t afi, int type, |
1441 | u_short instance) | |
718e3744 | 1442 | { |
d62a17ae | 1443 | struct bgp_redist *red; |
1444 | ||
1445 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1446 | if (!red) | |
1447 | return CMD_SUCCESS; | |
1448 | ||
1449 | /* Return if zebra connection is disabled. */ | |
1450 | if (instance) { | |
1451 | if (!redist_check_instance(&zclient->mi_redist[afi][type], | |
1452 | instance)) | |
1453 | return CMD_WARNING; | |
1454 | redist_del_instance(&zclient->mi_redist[afi][type], instance); | |
1455 | } else { | |
1456 | if (!vrf_bitmap_check(zclient->redist[afi][type], bgp->vrf_id)) | |
1457 | return CMD_WARNING; | |
1458 | vrf_bitmap_unset(zclient->redist[afi][type], bgp->vrf_id); | |
1459 | } | |
718e3744 | 1460 | |
65efcfce | 1461 | #if ENABLE_BGP_VNC |
d62a17ae | 1462 | if (bgp->vrf_id == VRF_DEFAULT && type == ZEBRA_ROUTE_VNC_DIRECT) { |
1463 | vnc_export_bgp_disable(bgp, afi); | |
1464 | } | |
65efcfce LB |
1465 | #endif |
1466 | ||
d62a17ae | 1467 | if (bgp_install_info_to_zebra(bgp)) { |
1468 | /* Send distribute delete message to zebra. */ | |
1469 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1470 | zlog_debug("Tx redistribute del VRF %u afi %d %s %d", | |
1471 | bgp->vrf_id, afi, zebra_route_string(type), | |
1472 | instance); | |
1473 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, | |
1474 | type, instance, bgp->vrf_id); | |
1475 | } | |
1476 | ||
1477 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
1478 | bgp_redistribute_withdraw(bgp, afi, type, instance); | |
1479 | ||
1480 | return CMD_SUCCESS; | |
718e3744 | 1481 | } |
1482 | ||
6aeb9e78 | 1483 | /* Unset redistribution. */ |
d62a17ae | 1484 | int bgp_redistribute_unset(struct bgp *bgp, afi_t afi, int type, |
1485 | u_short instance) | |
6aeb9e78 | 1486 | { |
d62a17ae | 1487 | struct bgp_redist *red; |
6aeb9e78 | 1488 | |
d62a17ae | 1489 | red = bgp_redist_lookup(bgp, afi, type, instance); |
1490 | if (!red) | |
1491 | return CMD_SUCCESS; | |
6aeb9e78 | 1492 | |
d62a17ae | 1493 | bgp_redistribute_unreg(bgp, afi, type, instance); |
6aeb9e78 | 1494 | |
d62a17ae | 1495 | /* Unset route-map. */ |
1496 | if (red->rmap.name) | |
1497 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); | |
1498 | red->rmap.name = NULL; | |
1499 | red->rmap.map = NULL; | |
6aeb9e78 | 1500 | |
d62a17ae | 1501 | /* Unset metric. */ |
1502 | red->redist_metric_flag = 0; | |
1503 | red->redist_metric = 0; | |
6aeb9e78 | 1504 | |
d62a17ae | 1505 | bgp_redist_del(bgp, afi, type, instance); |
6aeb9e78 | 1506 | |
d62a17ae | 1507 | return CMD_SUCCESS; |
6aeb9e78 DS |
1508 | } |
1509 | ||
eb117f29 SK |
1510 | /* Update redistribute vrf bitmap during triggers like |
1511 | restart networking or delete/add VRFs */ | |
d62a17ae | 1512 | void bgp_update_redist_vrf_bitmaps(struct bgp *bgp, vrf_id_t old_vrf_id) |
eb117f29 | 1513 | { |
d62a17ae | 1514 | int i; |
1515 | afi_t afi; | |
1516 | ||
1517 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
1518 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
1519 | if (vrf_bitmap_check(zclient->redist[afi][i], | |
1520 | old_vrf_id)) { | |
1521 | vrf_bitmap_unset(zclient->redist[afi][i], | |
1522 | old_vrf_id); | |
1523 | vrf_bitmap_set(zclient->redist[afi][i], | |
1524 | bgp->vrf_id); | |
1525 | } | |
1526 | return; | |
eb117f29 SK |
1527 | } |
1528 | ||
d62a17ae | 1529 | void bgp_zclient_reset(void) |
718e3744 | 1530 | { |
d62a17ae | 1531 | zclient_reset(zclient); |
718e3744 | 1532 | } |
1533 | ||
ad4cbda1 | 1534 | /* Register this instance with Zebra. Invoked upon connect (for |
1535 | * default instance) and when other VRFs are learnt (or created and | |
1536 | * already learnt). | |
1537 | */ | |
d62a17ae | 1538 | void bgp_zebra_instance_register(struct bgp *bgp) |
ad4cbda1 | 1539 | { |
d62a17ae | 1540 | /* Don't try to register if we're not connected to Zebra */ |
1541 | if (!zclient || zclient->sock < 0) | |
1542 | return; | |
ad4cbda1 | 1543 | |
d62a17ae | 1544 | if (BGP_DEBUG(zebra, ZEBRA)) |
1545 | zlog_debug("Registering VRF %u", bgp->vrf_id); | |
ad4cbda1 | 1546 | |
d62a17ae | 1547 | /* Register for router-id, interfaces, redistributed routes. */ |
1548 | zclient_send_reg_requests(zclient, bgp->vrf_id); | |
7724c0a1 | 1549 | |
d62a17ae | 1550 | /* For default instance, register to learn about VNIs, if appropriate. |
1551 | */ | |
1552 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT | |
1553 | && bgp->advertise_all_vni) | |
1554 | bgp_zebra_advertise_all_vni(bgp, 1); | |
ad4cbda1 | 1555 | } |
1556 | ||
1557 | /* Deregister this instance with Zebra. Invoked upon the instance | |
1558 | * being deleted (default or VRF) and it is already registered. | |
1559 | */ | |
d62a17ae | 1560 | void bgp_zebra_instance_deregister(struct bgp *bgp) |
ad4cbda1 | 1561 | { |
d62a17ae | 1562 | /* Don't try to deregister if we're not connected to Zebra */ |
1563 | if (zclient->sock < 0) | |
1564 | return; | |
ad4cbda1 | 1565 | |
d62a17ae | 1566 | if (BGP_DEBUG(zebra, ZEBRA)) |
1567 | zlog_debug("Deregistering VRF %u", bgp->vrf_id); | |
ad4cbda1 | 1568 | |
d62a17ae | 1569 | /* For default instance, unregister learning about VNIs, if appropriate. |
1570 | */ | |
1571 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT | |
1572 | && bgp->advertise_all_vni) | |
1573 | bgp_zebra_advertise_all_vni(bgp, 0); | |
7724c0a1 | 1574 | |
d62a17ae | 1575 | /* Deregister for router-id, interfaces, redistributed routes. */ |
1576 | zclient_send_dereg_requests(zclient, bgp->vrf_id); | |
ad4cbda1 | 1577 | } |
1578 | ||
d62a17ae | 1579 | void bgp_zebra_initiate_radv(struct bgp *bgp, struct peer *peer) |
4a04e5f7 | 1580 | { |
d62a17ae | 1581 | int ra_interval = BGP_UNNUM_DEFAULT_RA_INTERVAL; |
5c81b96a | 1582 | |
d62a17ae | 1583 | /* Don't try to initiate if we're not connected to Zebra */ |
1584 | if (zclient->sock < 0) | |
1585 | return; | |
4a04e5f7 | 1586 | |
d62a17ae | 1587 | if (BGP_DEBUG(zebra, ZEBRA)) |
1588 | zlog_debug("%u: Initiating RA for peer %s", bgp->vrf_id, | |
1589 | peer->host); | |
4a04e5f7 | 1590 | |
d62a17ae | 1591 | zclient_send_interface_radv_req(zclient, bgp->vrf_id, peer->ifp, 1, |
1592 | ra_interval); | |
4a04e5f7 | 1593 | } |
1594 | ||
d62a17ae | 1595 | void bgp_zebra_terminate_radv(struct bgp *bgp, struct peer *peer) |
4a04e5f7 | 1596 | { |
d62a17ae | 1597 | /* Don't try to terminate if we're not connected to Zebra */ |
1598 | if (zclient->sock < 0) | |
1599 | return; | |
4a04e5f7 | 1600 | |
d62a17ae | 1601 | if (BGP_DEBUG(zebra, ZEBRA)) |
1602 | zlog_debug("%u: Terminating RA for peer %s", bgp->vrf_id, | |
1603 | peer->host); | |
4a04e5f7 | 1604 | |
d62a17ae | 1605 | zclient_send_interface_radv_req(zclient, bgp->vrf_id, peer->ifp, 0, 0); |
4a04e5f7 | 1606 | } |
1607 | ||
1a98c087 MK |
1608 | int bgp_zebra_advertise_gw_macip(struct bgp *bgp, int advertise, vni_t vni) |
1609 | { | |
1610 | struct stream *s = NULL; | |
1611 | ||
1612 | /* Check socket. */ | |
1613 | if (!zclient || zclient->sock < 0) | |
1614 | return 0; | |
1615 | ||
1616 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1617 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
1618 | return 0; | |
1619 | ||
1620 | s = zclient->obuf; | |
1621 | stream_reset(s); | |
1622 | ||
1623 | zclient_create_header(s, ZEBRA_ADVERTISE_DEFAULT_GW, bgp->vrf_id); | |
1624 | stream_putc(s, advertise); | |
1625 | stream_put3(s, vni); | |
1626 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1627 | ||
1628 | return zclient_send_message(zclient); | |
1629 | } | |
1630 | ||
d62a17ae | 1631 | int bgp_zebra_advertise_all_vni(struct bgp *bgp, int advertise) |
7724c0a1 | 1632 | { |
d62a17ae | 1633 | struct stream *s; |
7724c0a1 | 1634 | |
d62a17ae | 1635 | /* Check socket. */ |
1636 | if (!zclient || zclient->sock < 0) | |
1637 | return 0; | |
7724c0a1 | 1638 | |
d62a17ae | 1639 | /* Don't try to register if Zebra doesn't know of this instance. */ |
1640 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
1641 | return 0; | |
7724c0a1 | 1642 | |
d62a17ae | 1643 | s = zclient->obuf; |
1644 | stream_reset(s); | |
7724c0a1 | 1645 | |
d62a17ae | 1646 | zclient_create_header(s, ZEBRA_ADVERTISE_ALL_VNI, bgp->vrf_id); |
1647 | stream_putc(s, advertise); | |
1648 | stream_putw_at(s, 0, stream_get_endp(s)); | |
7724c0a1 | 1649 | |
d62a17ae | 1650 | return zclient_send_message(zclient); |
7724c0a1 | 1651 | } |
1652 | ||
ad4cbda1 | 1653 | /* BGP has established connection with Zebra. */ |
d62a17ae | 1654 | static void bgp_zebra_connected(struct zclient *zclient) |
7076bb2f | 1655 | { |
d62a17ae | 1656 | struct bgp *bgp; |
7076bb2f | 1657 | |
d62a17ae | 1658 | zclient_num_connects++; /* increment even if not responding */ |
afbb1c59 | 1659 | |
d62a17ae | 1660 | /* At this point, we may or may not have BGP instances configured, but |
1661 | * we're only interested in the default VRF (others wouldn't have learnt | |
1662 | * the VRF from Zebra yet.) | |
1663 | */ | |
1664 | bgp = bgp_get_default(); | |
1665 | if (!bgp) | |
1666 | return; | |
ad4cbda1 | 1667 | |
d62a17ae | 1668 | bgp_zebra_instance_register(bgp); |
ad4cbda1 | 1669 | |
d62a17ae | 1670 | /* Send the client registration */ |
1671 | bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER); | |
2376c3f2 | 1672 | |
d62a17ae | 1673 | /* TODO - What if we have peers and networks configured, do we have to |
1674 | * kick-start them? | |
1675 | */ | |
7076bb2f FL |
1676 | } |
1677 | ||
fe1dc5a3 MK |
1678 | static int bgp_zebra_process_local_l3vni(int cmd, struct zclient *zclient, |
1679 | zebra_size_t length, vrf_id_t vrf_id) | |
1680 | { | |
1681 | char buf[ETHER_ADDR_STRLEN]; | |
1682 | vni_t l3vni; | |
1683 | struct ethaddr rmac; | |
1684 | struct stream *s; | |
1685 | ||
1686 | memset(&rmac, 0, sizeof(struct ethaddr)); | |
1687 | s = zclient->ibuf; | |
1688 | l3vni = stream_getl(s); | |
1689 | if (cmd == ZEBRA_L3VNI_ADD) | |
1690 | stream_get(&rmac, s, sizeof(struct ethaddr)); | |
1691 | ||
1692 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1693 | zlog_debug("Rx L3-VNI %s VRF %s VNI %u RMAC %s", | |
1694 | (cmd == ZEBRA_L3VNI_ADD) ? "add" : "del", | |
1695 | vrf_id_to_name(vrf_id), | |
1696 | l3vni, | |
1697 | prefix_mac2str(&rmac, buf, sizeof(buf))); | |
1698 | ||
1699 | if (cmd == ZEBRA_L3VNI_ADD) | |
1700 | bgp_evpn_local_l3vni_add(l3vni, vrf_id, &rmac); | |
1701 | else | |
1702 | bgp_evpn_local_l3vni_del(l3vni, vrf_id); | |
1703 | ||
1704 | return 0; | |
1705 | } | |
1706 | ||
d62a17ae | 1707 | static int bgp_zebra_process_local_vni(int command, struct zclient *zclient, |
1708 | zebra_size_t length, vrf_id_t vrf_id) | |
128ea8ab | 1709 | { |
d62a17ae | 1710 | struct stream *s; |
1711 | vni_t vni; | |
1712 | struct bgp *bgp; | |
1713 | struct in_addr vtep_ip; | |
29c53922 | 1714 | vrf_id_t tenant_vrf_id = VRF_DEFAULT; |
d62a17ae | 1715 | |
1716 | s = zclient->ibuf; | |
1717 | vni = stream_getl(s); | |
29c53922 | 1718 | if (command == ZEBRA_VNI_ADD) { |
d62a17ae | 1719 | vtep_ip.s_addr = stream_get_ipv4(s); |
29c53922 MK |
1720 | stream_get(&tenant_vrf_id, s, sizeof(vrf_id_t)); |
1721 | } | |
1722 | ||
d62a17ae | 1723 | bgp = bgp_lookup_by_vrf_id(vrf_id); |
1724 | if (!bgp) | |
1725 | return 0; | |
1726 | ||
1727 | if (BGP_DEBUG(zebra, ZEBRA)) | |
29c53922 MK |
1728 | zlog_debug("Rx VNI %s VRF %s VNI %u tenant-vrf %s", |
1729 | (command == ZEBRA_VNI_ADD) ? "add" : "del", | |
1730 | vrf_id_to_name(vrf_id), | |
1731 | vni, vrf_id_to_name(tenant_vrf_id)); | |
d62a17ae | 1732 | |
1733 | if (command == ZEBRA_VNI_ADD) | |
1734 | return bgp_evpn_local_vni_add( | |
29c53922 MK |
1735 | bgp, vni, vtep_ip.s_addr ? vtep_ip : bgp->router_id, |
1736 | tenant_vrf_id); | |
d62a17ae | 1737 | else |
1738 | return bgp_evpn_local_vni_del(bgp, vni); | |
128ea8ab | 1739 | } |
1740 | ||
d62a17ae | 1741 | static int bgp_zebra_process_local_macip(int command, struct zclient *zclient, |
1742 | zebra_size_t length, vrf_id_t vrf_id) | |
128ea8ab | 1743 | { |
d62a17ae | 1744 | struct stream *s; |
1745 | vni_t vni; | |
1746 | struct bgp *bgp; | |
1747 | struct ethaddr mac; | |
1748 | struct ipaddr ip; | |
1749 | int ipa_len; | |
1750 | char buf[ETHER_ADDR_STRLEN]; | |
1751 | char buf1[INET6_ADDRSTRLEN]; | |
1a98c087 | 1752 | u_char flags; |
d62a17ae | 1753 | |
1754 | memset(&ip, 0, sizeof(ip)); | |
1755 | s = zclient->ibuf; | |
1756 | vni = stream_getl(s); | |
28328ea9 | 1757 | stream_get(&mac.octet, s, ETH_ALEN); |
d62a17ae | 1758 | ipa_len = stream_getl(s); |
1759 | if (ipa_len != 0 && ipa_len != IPV4_MAX_BYTELEN | |
1760 | && ipa_len != IPV6_MAX_BYTELEN) { | |
1761 | zlog_err("%u:Recv MACIP %s with invalid IP addr length %d", | |
1762 | vrf_id, (command == ZEBRA_MACIP_ADD) ? "Add" : "Del", | |
1763 | ipa_len); | |
1764 | return -1; | |
1765 | } | |
1766 | ||
1767 | if (ipa_len) { | |
1768 | ip.ipa_type = | |
1769 | (ipa_len == IPV4_MAX_BYTELEN) ? IPADDR_V4 : IPADDR_V6; | |
1770 | stream_get(&ip.ip.addr, s, ipa_len); | |
1771 | } | |
1a98c087 | 1772 | flags = stream_getc(s); |
d62a17ae | 1773 | |
1774 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
1775 | if (!bgp) | |
1776 | return 0; | |
1777 | ||
1778 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1a98c087 MK |
1779 | zlog_debug("%u:Recv MACIP %s flags 0x%x MAC %s IP %s VNI %u", |
1780 | vrf_id, (command == ZEBRA_MACIP_ADD) ? "Add" : "Del", | |
1781 | flags, prefix_mac2str(&mac, buf, sizeof(buf)), | |
d62a17ae | 1782 | ipaddr2str(&ip, buf1, sizeof(buf1)), vni); |
1783 | ||
1784 | if (command == ZEBRA_MACIP_ADD) | |
1a98c087 | 1785 | return bgp_evpn_local_macip_add(bgp, vni, &mac, &ip, flags); |
d62a17ae | 1786 | else |
1787 | return bgp_evpn_local_macip_del(bgp, vni, &mac, &ip); | |
128ea8ab | 1788 | } |
6aeb9e78 | 1789 | |
342213ea DS |
1790 | extern struct zebra_privs_t bgpd_privs; |
1791 | ||
d62a17ae | 1792 | void bgp_zebra_init(struct thread_master *master) |
718e3744 | 1793 | { |
d62a17ae | 1794 | zclient_num_connects = 0; |
1795 | ||
1796 | /* Set default values. */ | |
e1a1880d | 1797 | zclient = zclient_new_notify(master, &zclient_options_default); |
342213ea | 1798 | zclient_init(zclient, ZEBRA_ROUTE_BGP, 0, &bgpd_privs); |
d62a17ae | 1799 | zclient->zebra_connected = bgp_zebra_connected; |
1800 | zclient->router_id_update = bgp_router_id_update; | |
1801 | zclient->interface_add = bgp_interface_add; | |
1802 | zclient->interface_delete = bgp_interface_delete; | |
1803 | zclient->interface_address_add = bgp_interface_address_add; | |
1804 | zclient->interface_address_delete = bgp_interface_address_delete; | |
1805 | zclient->interface_nbr_address_add = bgp_interface_nbr_address_add; | |
1806 | zclient->interface_nbr_address_delete = | |
1807 | bgp_interface_nbr_address_delete; | |
1808 | zclient->interface_vrf_update = bgp_interface_vrf_update; | |
74489921 RW |
1809 | zclient->redistribute_route_add = zebra_read_route; |
1810 | zclient->redistribute_route_del = zebra_read_route; | |
d62a17ae | 1811 | zclient->interface_up = bgp_interface_up; |
1812 | zclient->interface_down = bgp_interface_down; | |
d62a17ae | 1813 | zclient->nexthop_update = bgp_read_nexthop_update; |
1814 | zclient->import_check_update = bgp_read_import_check_update; | |
1815 | zclient->fec_update = bgp_read_fec_update; | |
1816 | zclient->local_vni_add = bgp_zebra_process_local_vni; | |
1817 | zclient->local_vni_del = bgp_zebra_process_local_vni; | |
1818 | zclient->local_macip_add = bgp_zebra_process_local_macip; | |
1819 | zclient->local_macip_del = bgp_zebra_process_local_macip; | |
fe1dc5a3 MK |
1820 | zclient->local_l3vni_add = bgp_zebra_process_local_l3vni; |
1821 | zclient->local_l3vni_del = bgp_zebra_process_local_l3vni; | |
718e3744 | 1822 | } |
bb86c601 | 1823 | |
d62a17ae | 1824 | void bgp_zebra_destroy(void) |
bb86c601 | 1825 | { |
d62a17ae | 1826 | if (zclient == NULL) |
1827 | return; | |
1828 | zclient_stop(zclient); | |
1829 | zclient_free(zclient); | |
1830 | zclient = NULL; | |
bb86c601 | 1831 | } |
afbb1c59 | 1832 | |
d62a17ae | 1833 | int bgp_zebra_num_connects(void) |
afbb1c59 | 1834 | { |
d62a17ae | 1835 | return zclient_num_connects; |
afbb1c59 | 1836 | } |