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718e3744 | 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 | |
17 | along with GNU Zebra; see the file COPYING. If not, write to the | |
18 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
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" |
718e3744 | 37 | |
38 | #include "bgpd/bgpd.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_attr.h" | |
41 | #include "bgpd/bgp_nexthop.h" | |
42 | #include "bgpd/bgp_zebra.h" | |
43 | #include "bgpd/bgp_fsm.h" | |
a39275d7 | 44 | #include "bgpd/bgp_debug.h" |
8196f13d | 45 | #include "bgpd/bgp_mpath.h" |
fb018d25 | 46 | #include "bgpd/bgp_nexthop.h" |
ffd0c037 | 47 | #include "bgpd/bgp_nht.h" |
8c4f6381 | 48 | #include "bgpd/bgp_bfd.h" |
65efcfce | 49 | #if ENABLE_BGP_VNC |
f8b6f499 LB |
50 | # include "bgpd/rfapi/rfapi_backend.h" |
51 | # include "bgpd/rfapi/vnc_export_bgp.h" | |
65efcfce | 52 | #endif |
6b0655a2 | 53 | |
718e3744 | 54 | /* All information about zebra. */ |
228da428 | 55 | struct zclient *zclient = NULL; |
718e3744 | 56 | |
8196f13d JB |
57 | /* Growable buffer for nexthops sent to zebra */ |
58 | struct stream *bgp_nexthop_buf = NULL; | |
431aa9f9 | 59 | struct stream *bgp_ifindices_buf = NULL; |
8196f13d | 60 | |
73ac8160 DS |
61 | /* These array buffers are used in making a copy of the attributes for |
62 | route-map apply. Arrays are being used here to minimize mallocs and | |
63 | frees for the temporary copy of the attributes. | |
64 | Given the zapi api expects the nexthop buffer to contain pointer to | |
65 | pointers for nexthops, we couldnt have used a single nexthop variable | |
66 | on the stack, hence we had two options: | |
67 | 1. maintain a linked-list and free it after zapi_*_route call | |
68 | 2. use an array to avoid number of mallocs. | |
69 | Number of supported next-hops are finite, use of arrays should be ok. */ | |
5b964da3 DS |
70 | struct attr attr_cp[MULTIPATH_NUM]; |
71 | struct attr_extra attr_extra_cp[MULTIPATH_NUM]; | |
73ac8160 DS |
72 | int attr_index = 0; |
73 | ||
74 | /* Once per address-family initialization of the attribute array */ | |
75 | #define BGP_INFO_ATTR_BUF_INIT()\ | |
76 | do {\ | |
5b964da3 DS |
77 | memset(attr_cp, 0, MULTIPATH_NUM * sizeof(struct attr));\ |
78 | memset(attr_extra_cp, 0, MULTIPATH_NUM * sizeof(struct attr_extra));\ | |
73ac8160 DS |
79 | attr_index = 0;\ |
80 | } while (0) | |
81 | ||
82 | #define BGP_INFO_ATTR_BUF_COPY(info_src, info_dst)\ | |
83 | do { \ | |
84 | *info_dst = *info_src; \ | |
5b964da3 | 85 | assert(attr_index != MULTIPATH_NUM);\ |
73ac8160 DS |
86 | attr_cp[attr_index].extra = &attr_extra_cp[attr_index]; \ |
87 | bgp_attr_dup (&attr_cp[attr_index], info_src->attr); \ | |
88 | bgp_attr_deep_dup (&attr_cp[attr_index], info_src->attr); \ | |
89 | info_dst->attr = &attr_cp[attr_index]; \ | |
90 | attr_index++;\ | |
91 | } while (0) | |
92 | ||
93 | #define BGP_INFO_ATTR_BUF_FREE(info) \ | |
94 | do { \ | |
95 | bgp_attr_deep_free(info->attr); \ | |
96 | } while (0) | |
97 | ||
ad4cbda1 | 98 | |
99 | /* Can we install into zebra? */ | |
100 | static inline int | |
101 | bgp_install_info_to_zebra (struct bgp *bgp) | |
102 | { | |
103 | if (zclient->sock <= 0) | |
104 | return 0; | |
105 | ||
106 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
107 | return 0; | |
108 | ||
109 | return 1; | |
110 | } | |
111 | ||
18a6dce6 | 112 | /* Router-id update message from zebra. */ |
94f2b392 | 113 | static int |
7076bb2f FL |
114 | bgp_router_id_update (int command, struct zclient *zclient, zebra_size_t length, |
115 | vrf_id_t vrf_id) | |
718e3744 | 116 | { |
18a6dce6 | 117 | struct prefix router_id; |
718e3744 | 118 | |
18a6dce6 | 119 | zebra_router_id_update_read(zclient->ibuf,&router_id); |
a39275d7 | 120 | |
16286195 | 121 | if (BGP_DEBUG (zebra, ZEBRA)) |
a39275d7 | 122 | { |
4690c7d7 | 123 | char buf[PREFIX2STR_BUFFER]; |
a39275d7 | 124 | prefix2str(&router_id, buf, sizeof(buf)); |
ad4cbda1 | 125 | zlog_debug("Rx Router Id update VRF %u Id %s", vrf_id, buf); |
a39275d7 AS |
126 | } |
127 | ||
0e6cb743 | 128 | bgp_router_id_zebra_bump (vrf_id, &router_id); |
718e3744 | 129 | return 0; |
130 | } | |
131 | ||
fb018d25 DS |
132 | /* Nexthop update message from zebra. */ |
133 | static int | |
134 | bgp_read_nexthop_update (int command, struct zclient *zclient, | |
7076bb2f | 135 | zebra_size_t length, vrf_id_t vrf_id) |
fb018d25 | 136 | { |
7076bb2f | 137 | bgp_parse_nexthop_update(command, vrf_id); |
078430f6 DS |
138 | return 0; |
139 | } | |
140 | ||
141 | static int | |
142 | bgp_read_import_check_update(int command, struct zclient *zclient, | |
7076bb2f | 143 | zebra_size_t length, vrf_id_t vrf_id) |
078430f6 | 144 | { |
7076bb2f | 145 | bgp_parse_nexthop_update(command, vrf_id); |
fb018d25 DS |
146 | return 0; |
147 | } | |
148 | ||
4a04e5f7 | 149 | /* Set or clear interface on which unnumbered neighbor is configured. This |
150 | * would in turn cause BGP to initiate or turn off IPv6 RAs on this | |
151 | * interface. | |
152 | */ | |
153 | static void | |
154 | bgp_update_interface_nbrs (struct bgp *bgp, struct interface *ifp, | |
155 | struct interface *upd_ifp) | |
156 | { | |
157 | struct listnode *node, *nnode; | |
158 | struct peer *peer; | |
159 | ||
160 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) | |
161 | { | |
162 | if (peer->conf_if && | |
163 | (strcmp (peer->conf_if, ifp->name) == 0)) | |
164 | { | |
4a04e5f7 | 165 | if (upd_ifp) |
5575a6bb DS |
166 | { |
167 | peer->ifp = upd_ifp; | |
168 | bgp_zebra_initiate_radv (bgp, peer); | |
169 | } | |
4a04e5f7 | 170 | else |
5575a6bb DS |
171 | { |
172 | bgp_zebra_terminate_radv (bgp, peer); | |
173 | peer->ifp = upd_ifp; | |
174 | } | |
4a04e5f7 | 175 | } |
176 | } | |
177 | } | |
178 | ||
a80beece | 179 | static void |
6aeb9e78 | 180 | bgp_start_interface_nbrs (struct bgp *bgp, struct interface *ifp) |
a80beece | 181 | { |
6aeb9e78 | 182 | struct listnode *node, *nnode; |
a80beece DS |
183 | struct peer *peer; |
184 | ||
6aeb9e78 | 185 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
a80beece | 186 | { |
6aeb9e78 DS |
187 | if (peer->conf_if && |
188 | (strcmp (peer->conf_if, ifp->name) == 0) && | |
189 | peer->status != Established) | |
a80beece | 190 | { |
6aeb9e78 DS |
191 | if (peer_active(peer)) |
192 | BGP_EVENT_ADD (peer, BGP_Stop); | |
193 | BGP_EVENT_ADD (peer, BGP_Start); | |
a80beece DS |
194 | } |
195 | } | |
196 | } | |
197 | ||
198 | static void | |
6aeb9e78 | 199 | bgp_nbr_connected_add (struct bgp *bgp, struct nbr_connected *ifc) |
a197c47c DS |
200 | { |
201 | struct listnode *node; | |
202 | struct connected *connected; | |
203 | struct interface *ifp; | |
204 | struct prefix *p; | |
205 | ||
206 | /* Kick-off the FSM for any relevant peers only if there is a | |
207 | * valid local address on the interface. | |
208 | */ | |
209 | ifp = ifc->ifp; | |
210 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, node, connected)) | |
211 | { | |
212 | p = connected->address; | |
213 | if (p->family == AF_INET6 && | |
214 | IN6_IS_ADDR_LINKLOCAL (&p->u.prefix6)) | |
215 | break; | |
216 | } | |
217 | if (!connected) | |
218 | return; | |
219 | ||
6aeb9e78 | 220 | bgp_start_interface_nbrs (bgp, ifp); |
a197c47c DS |
221 | } |
222 | ||
223 | static void | |
6aeb9e78 | 224 | bgp_nbr_connected_delete (struct bgp *bgp, struct nbr_connected *ifc, int del) |
a80beece | 225 | { |
6aeb9e78 | 226 | struct listnode *node, *nnode; |
a80beece | 227 | struct peer *peer; |
a197c47c | 228 | struct interface *ifp; |
a80beece | 229 | |
6aeb9e78 | 230 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
a80beece | 231 | { |
6aeb9e78 | 232 | if (peer->conf_if && (strcmp (peer->conf_if, ifc->ifp->name) == 0)) |
a80beece | 233 | { |
e60480bd | 234 | peer->last_reset = PEER_DOWN_NBR_ADDR_DEL; |
6aeb9e78 | 235 | BGP_EVENT_ADD (peer, BGP_Stop); |
a80beece DS |
236 | } |
237 | } | |
a197c47c DS |
238 | /* Free neighbor also, if we're asked to. */ |
239 | if (del) | |
240 | { | |
241 | ifp = ifc->ifp; | |
242 | listnode_delete (ifp->nbr_connected, ifc); | |
243 | nbr_connected_free (ifc); | |
244 | } | |
a80beece DS |
245 | } |
246 | ||
718e3744 | 247 | /* Inteface addition message from zebra. */ |
94f2b392 | 248 | static int |
7076bb2f FL |
249 | bgp_interface_add (int command, struct zclient *zclient, zebra_size_t length, |
250 | vrf_id_t vrf_id) | |
718e3744 | 251 | { |
252 | struct interface *ifp; | |
4a04e5f7 | 253 | struct bgp *bgp; |
718e3744 | 254 | |
7076bb2f | 255 | ifp = zebra_interface_add_read (zclient->ibuf, vrf_id); |
4a04e5f7 | 256 | if (!ifp) // unexpected |
257 | return 0; | |
718e3744 | 258 | |
16286195 | 259 | if (BGP_DEBUG (zebra, ZEBRA) && ifp) |
ad4cbda1 | 260 | zlog_debug("Rx Intf add VRF %u IF %s", vrf_id, ifp->name); |
a39275d7 | 261 | |
4a04e5f7 | 262 | bgp = bgp_lookup_by_vrf_id (vrf_id); |
263 | if (!bgp) | |
264 | return 0; | |
265 | ||
266 | bgp_update_interface_nbrs (bgp, ifp, ifp); | |
718e3744 | 267 | return 0; |
268 | } | |
269 | ||
94f2b392 | 270 | static int |
718e3744 | 271 | bgp_interface_delete (int command, struct zclient *zclient, |
7076bb2f | 272 | zebra_size_t length, vrf_id_t vrf_id) |
718e3744 | 273 | { |
274 | struct stream *s; | |
275 | struct interface *ifp; | |
4a04e5f7 | 276 | struct bgp *bgp; |
718e3744 | 277 | |
278 | s = zclient->ibuf; | |
7076bb2f | 279 | ifp = zebra_interface_state_read (s, vrf_id); |
4a04e5f7 | 280 | if (!ifp) /* This may happen if we've just unregistered for a VRF. */ |
a4499b83 | 281 | return 0; |
282 | ||
84361d61 | 283 | ifp->ifindex = IFINDEX_DELETED; |
718e3744 | 284 | |
16286195 | 285 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 286 | zlog_debug("Rx Intf del VRF %u IF %s", vrf_id, ifp->name); |
a39275d7 | 287 | |
4a04e5f7 | 288 | bgp = bgp_lookup_by_vrf_id (vrf_id); |
289 | if (!bgp) | |
290 | return 0; | |
291 | ||
292 | bgp_update_interface_nbrs (bgp, ifp, NULL); | |
718e3744 | 293 | return 0; |
294 | } | |
295 | ||
94f2b392 | 296 | static int |
7076bb2f FL |
297 | bgp_interface_up (int command, struct zclient *zclient, zebra_size_t length, |
298 | vrf_id_t vrf_id) | |
718e3744 | 299 | { |
300 | struct stream *s; | |
301 | struct interface *ifp; | |
302 | struct connected *c; | |
a80beece | 303 | struct nbr_connected *nc; |
1eb8ef25 | 304 | struct listnode *node, *nnode; |
6aeb9e78 DS |
305 | struct bgp *bgp; |
306 | ||
718e3744 | 307 | s = zclient->ibuf; |
7076bb2f | 308 | ifp = zebra_interface_state_read (s, vrf_id); |
718e3744 | 309 | |
310 | if (! ifp) | |
311 | return 0; | |
312 | ||
16286195 | 313 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 314 | zlog_debug("Rx Intf up VRF %u IF %s", vrf_id, ifp->name); |
315 | ||
316 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
317 | if (!bgp) | |
318 | return 0; | |
a39275d7 | 319 | |
1eb8ef25 | 320 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) |
6aeb9e78 | 321 | bgp_connected_add (bgp, c); |
718e3744 | 322 | |
a80beece | 323 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) |
6aeb9e78 | 324 | bgp_nbr_connected_add (bgp, nc); |
a80beece | 325 | |
718e3744 | 326 | return 0; |
327 | } | |
328 | ||
94f2b392 | 329 | static int |
7076bb2f FL |
330 | bgp_interface_down (int command, struct zclient *zclient, zebra_size_t length, |
331 | vrf_id_t vrf_id) | |
718e3744 | 332 | { |
333 | struct stream *s; | |
334 | struct interface *ifp; | |
335 | struct connected *c; | |
a80beece | 336 | struct nbr_connected *nc; |
1eb8ef25 | 337 | struct listnode *node, *nnode; |
6aeb9e78 DS |
338 | struct bgp *bgp; |
339 | ||
718e3744 | 340 | s = zclient->ibuf; |
7076bb2f | 341 | ifp = zebra_interface_state_read (s, vrf_id); |
718e3744 | 342 | if (! ifp) |
343 | return 0; | |
344 | ||
16286195 | 345 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 346 | zlog_debug("Rx Intf down VRF %u IF %s", vrf_id, ifp->name); |
347 | ||
348 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
349 | if (!bgp) | |
350 | return 0; | |
a39275d7 | 351 | |
1eb8ef25 | 352 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) |
6aeb9e78 | 353 | bgp_connected_delete (bgp, c); |
718e3744 | 354 | |
a80beece | 355 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) |
6aeb9e78 | 356 | bgp_nbr_connected_delete (bgp, nc, 1); |
a80beece | 357 | |
8da8689d | 358 | /* Fast external-failover */ |
718e3744 | 359 | { |
718e3744 | 360 | struct peer *peer; |
718e3744 | 361 | |
ad4cbda1 | 362 | if (CHECK_FLAG (bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) |
363 | return 0; | |
718e3744 | 364 | |
ad4cbda1 | 365 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
366 | { | |
8c4f6381 | 367 | #if defined(HAVE_CUMULUS) |
368 | /* Take down directly connected EBGP peers as well as 1-hop BFD | |
369 | * tracked (directly connected) IBGP peers. | |
370 | */ | |
371 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1) && | |
372 | (!peer->bfd_info || bgp_bfd_is_peer_multihop(peer))) | |
373 | #else | |
374 | /* Take down directly connected EBGP peers */ | |
ad4cbda1 | 375 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) |
8c4f6381 | 376 | #endif |
ad4cbda1 | 377 | continue; |
718e3744 | 378 | |
ad4cbda1 | 379 | if (ifp == peer->nexthop.ifp) |
e60480bd DD |
380 | { |
381 | BGP_EVENT_ADD (peer, BGP_Stop); | |
382 | peer->last_reset = PEER_DOWN_IF_DOWN; | |
383 | } | |
718e3744 | 384 | } |
385 | } | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
94f2b392 | 390 | static int |
718e3744 | 391 | bgp_interface_address_add (int command, struct zclient *zclient, |
7076bb2f | 392 | zebra_size_t length, vrf_id_t vrf_id) |
718e3744 | 393 | { |
394 | struct connected *ifc; | |
395 | ||
7076bb2f | 396 | ifc = zebra_interface_address_read (command, zclient->ibuf, vrf_id); |
718e3744 | 397 | |
398 | if (ifc == NULL) | |
399 | return 0; | |
400 | ||
16286195 | 401 | if (bgp_debug_zebra(ifc->address)) |
a39275d7 | 402 | { |
4690c7d7 | 403 | char buf[PREFIX2STR_BUFFER]; |
a39275d7 | 404 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 405 | zlog_debug("Rx Intf address add VRF %u IF %s addr %s", |
406 | vrf_id, ifc->ifp->name, buf); | |
a39275d7 AS |
407 | } |
408 | ||
2e3b2e47 | 409 | if (if_is_operative (ifc->ifp)) |
a197c47c | 410 | { |
6aeb9e78 DS |
411 | struct bgp *bgp; |
412 | ||
413 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
414 | if (!bgp) | |
ad4cbda1 | 415 | return 0; |
6aeb9e78 DS |
416 | |
417 | bgp_connected_add (bgp, ifc); | |
a197c47c DS |
418 | /* If we have learnt of any neighbors on this interface, |
419 | * check to kick off any BGP interface-based neighbors, | |
420 | * but only if this is a link-local address. | |
421 | */ | |
422 | if (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6) && | |
423 | !list_isempty(ifc->ifp->nbr_connected)) | |
6aeb9e78 | 424 | bgp_start_interface_nbrs (bgp, ifc->ifp); |
a197c47c | 425 | } |
718e3744 | 426 | |
427 | return 0; | |
428 | } | |
429 | ||
94f2b392 | 430 | static int |
718e3744 | 431 | bgp_interface_address_delete (int command, struct zclient *zclient, |
7076bb2f | 432 | zebra_size_t length, vrf_id_t vrf_id) |
718e3744 | 433 | { |
434 | struct connected *ifc; | |
6aeb9e78 DS |
435 | struct bgp *bgp; |
436 | ||
7076bb2f | 437 | ifc = zebra_interface_address_read (command, zclient->ibuf, vrf_id); |
718e3744 | 438 | |
439 | if (ifc == NULL) | |
440 | return 0; | |
441 | ||
16286195 | 442 | if (bgp_debug_zebra(ifc->address)) |
a39275d7 | 443 | { |
4690c7d7 | 444 | char buf[PREFIX2STR_BUFFER]; |
a39275d7 | 445 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 446 | zlog_debug("Rx Intf address del VRF %u IF %s addr %s", |
447 | vrf_id, ifc->ifp->name, buf); | |
a39275d7 AS |
448 | } |
449 | ||
2e3b2e47 | 450 | if (if_is_operative (ifc->ifp)) |
ad4cbda1 | 451 | { |
452 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
453 | if (bgp) | |
454 | bgp_connected_delete (bgp, ifc); | |
455 | } | |
718e3744 | 456 | |
457 | connected_free (ifc); | |
458 | ||
459 | return 0; | |
460 | } | |
461 | ||
a80beece DS |
462 | static int |
463 | bgp_interface_nbr_address_add (int command, struct zclient *zclient, | |
7076bb2f | 464 | zebra_size_t length, vrf_id_t vrf_id) |
a80beece DS |
465 | { |
466 | struct nbr_connected *ifc = NULL; | |
6aeb9e78 DS |
467 | struct bgp *bgp; |
468 | ||
7076bb2f | 469 | ifc = zebra_interface_nbr_address_read (command, zclient->ibuf, vrf_id); |
a80beece DS |
470 | |
471 | if (ifc == NULL) | |
472 | return 0; | |
473 | ||
16286195 | 474 | if (bgp_debug_zebra(ifc->address)) |
a80beece | 475 | { |
4690c7d7 | 476 | char buf[PREFIX2STR_BUFFER]; |
a80beece | 477 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 478 | zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %s", |
479 | vrf_id, ifc->ifp->name, buf); | |
a80beece DS |
480 | } |
481 | ||
482 | if (if_is_operative (ifc->ifp)) | |
ad4cbda1 | 483 | { |
484 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
485 | if (bgp) | |
486 | bgp_nbr_connected_add (bgp, ifc); | |
487 | } | |
a80beece DS |
488 | |
489 | return 0; | |
490 | } | |
491 | ||
492 | static int | |
493 | bgp_interface_nbr_address_delete (int command, struct zclient *zclient, | |
7076bb2f | 494 | zebra_size_t length, vrf_id_t vrf_id) |
a80beece DS |
495 | { |
496 | struct nbr_connected *ifc = NULL; | |
6aeb9e78 DS |
497 | struct bgp *bgp; |
498 | ||
7076bb2f | 499 | ifc = zebra_interface_nbr_address_read (command, zclient->ibuf, vrf_id); |
a80beece DS |
500 | |
501 | if (ifc == NULL) | |
502 | return 0; | |
503 | ||
16286195 | 504 | if (bgp_debug_zebra(ifc->address)) |
a80beece | 505 | { |
4690c7d7 | 506 | char buf[PREFIX2STR_BUFFER]; |
a80beece | 507 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 508 | zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %s", |
509 | vrf_id, ifc->ifp->name, buf); | |
a80beece DS |
510 | } |
511 | ||
512 | if (if_is_operative (ifc->ifp)) | |
ad4cbda1 | 513 | { |
514 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
515 | if (bgp) | |
516 | bgp_nbr_connected_delete (bgp, ifc, 0); | |
517 | } | |
a80beece DS |
518 | |
519 | nbr_connected_free (ifc); | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
bfcd43b2 | 524 | /* VRF update for an interface. */ |
525 | static int | |
526 | bgp_interface_vrf_update (int command, struct zclient *zclient, zebra_size_t length, | |
527 | vrf_id_t vrf_id) | |
528 | { | |
529 | struct interface *ifp; | |
530 | vrf_id_t new_vrf_id; | |
531 | struct connected *c; | |
532 | struct nbr_connected *nc; | |
533 | struct listnode *node, *nnode; | |
534 | struct bgp *bgp; | |
535 | ||
536 | ifp = zebra_interface_vrf_update_read (zclient->ibuf, vrf_id, &new_vrf_id); | |
537 | if (! ifp) | |
538 | return 0; | |
539 | ||
540 | if (BGP_DEBUG (zebra, ZEBRA) && ifp) | |
541 | zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", | |
542 | vrf_id, ifp->name, new_vrf_id); | |
543 | ||
544 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
545 | if (!bgp) | |
546 | return 0; | |
547 | ||
548 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) | |
549 | bgp_connected_delete (bgp, c); | |
550 | ||
551 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) | |
552 | bgp_nbr_connected_delete (bgp, nc, 1); | |
553 | ||
554 | /* Fast external-failover */ | |
555 | { | |
556 | struct peer *peer; | |
557 | ||
558 | if (CHECK_FLAG (bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) | |
559 | return 0; | |
560 | ||
561 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) | |
562 | { | |
563 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) | |
564 | continue; | |
565 | ||
566 | if (ifp == peer->nexthop.ifp) | |
567 | BGP_EVENT_ADD (peer, BGP_Stop); | |
568 | } | |
569 | } | |
570 | ||
571 | if_update_vrf (ifp, ifp->name, strlen (ifp->name), new_vrf_id); | |
572 | ||
573 | bgp = bgp_lookup_by_vrf_id (new_vrf_id); | |
574 | if (!bgp) | |
575 | return 0; | |
576 | ||
577 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) | |
578 | bgp_connected_add (bgp, c); | |
579 | ||
580 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) | |
581 | bgp_nbr_connected_add (bgp, nc); | |
582 | return 0; | |
583 | } | |
584 | ||
718e3744 | 585 | /* Zebra route add and delete treatment. */ |
94f2b392 | 586 | static int |
7076bb2f FL |
587 | zebra_read_ipv4 (int command, struct zclient *zclient, zebra_size_t length, |
588 | vrf_id_t vrf_id) | |
718e3744 | 589 | { |
590 | struct stream *s; | |
591 | struct zapi_ipv4 api; | |
718e3744 | 592 | struct in_addr nexthop; |
593 | struct prefix_ipv4 p; | |
bc413143 | 594 | unsigned int ifindex; |
d289687f | 595 | int i; |
6aeb9e78 DS |
596 | struct bgp *bgp; |
597 | ||
598 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
599 | if (!bgp) | |
600 | return 0; | |
718e3744 | 601 | |
602 | s = zclient->ibuf; | |
718e3744 | 603 | nexthop.s_addr = 0; |
604 | ||
605 | /* Type, flags, message. */ | |
606 | api.type = stream_getc (s); | |
7c8ff89e | 607 | api.instance = stream_getw (s); |
0fc452dc | 608 | api.flags = stream_getl (s); |
718e3744 | 609 | api.message = stream_getc (s); |
610 | ||
611 | /* IPv4 prefix. */ | |
612 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
613 | p.family = AF_INET; | |
d9178828 | 614 | p.prefixlen = MIN(IPV4_MAX_PREFIXLEN, stream_getc (s)); |
718e3744 | 615 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); |
616 | ||
617 | /* Nexthop, ifindex, distance, metric. */ | |
618 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
619 | { | |
620 | api.nexthop_num = stream_getc (s); | |
621 | nexthop.s_addr = stream_get_ipv4 (s); | |
622 | } | |
0d9551dc | 623 | |
718e3744 | 624 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) |
625 | { | |
626 | api.ifindex_num = stream_getc (s); | |
bc413143 | 627 | ifindex = stream_getl (s); /* ifindex, unused */ |
718e3744 | 628 | } |
ffd0c037 DS |
629 | else |
630 | { | |
631 | ifindex = 0; | |
632 | } | |
0d9551dc | 633 | |
718e3744 | 634 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) |
635 | api.distance = stream_getc (s); | |
0d9551dc | 636 | |
718e3744 | 637 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) |
638 | api.metric = stream_getl (s); | |
639 | else | |
640 | api.metric = 0; | |
641 | ||
0d9551dc | 642 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG)) |
dc9ffce8 | 643 | api.tag = stream_getl (s); |
0d9551dc DS |
644 | else |
645 | api.tag = 0; | |
646 | ||
5048fe14 | 647 | if (command == ZEBRA_REDISTRIBUTE_IPV4_ADD) |
a39275d7 | 648 | { |
ffd0c037 | 649 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 AS |
650 | { |
651 | char buf[2][INET_ADDRSTRLEN]; | |
dc9ffce8 | 652 | zlog_debug("Rx IPv4 route add VRF %u %s[%d] %s/%d nexthop %s metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 653 | vrf_id, |
7c8ff89e | 654 | zebra_route_string(api.type), api.instance, |
a39275d7 AS |
655 | inet_ntop(AF_INET, &p.prefix, buf[0], sizeof(buf[0])), |
656 | p.prefixlen, | |
657 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
658 | api.metric, |
659 | api.tag); | |
a39275d7 | 660 | } |
d289687f | 661 | |
662 | /* | |
663 | * The ADD message is actually an UPDATE and there is no explicit DEL | |
664 | * for a prior redistributed route, if any. So, perform an implicit | |
665 | * DEL processing for the same redistributed route from any other | |
666 | * source type. | |
667 | */ | |
668 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
669 | { | |
670 | if (i != api.type) | |
6aeb9e78 | 671 | bgp_redistribute_delete(bgp, (struct prefix *)&p, i, api.instance); |
d289687f | 672 | } |
673 | ||
674 | /* Now perform the add/update. */ | |
6aeb9e78 | 675 | bgp_redistribute_add(bgp, (struct prefix *)&p, &nexthop, NULL, ifindex, |
7c8ff89e | 676 | api.metric, api.type, api.instance, api.tag); |
a39275d7 | 677 | } |
5048fe14 | 678 | else if (command == ZEBRA_REDISTRIBUTE_IPV4_DEL) |
a39275d7 | 679 | { |
ffd0c037 | 680 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 AS |
681 | { |
682 | char buf[2][INET_ADDRSTRLEN]; | |
ad4cbda1 | 683 | zlog_debug("Rx IPv4 route delete VRF %u %s[%d] %s/%d " |
dc9ffce8 | 684 | "nexthop %s metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 685 | vrf_id, |
7c8ff89e | 686 | zebra_route_string(api.type), api.instance, |
a39275d7 AS |
687 | inet_ntop(AF_INET, &p.prefix, buf[0], sizeof(buf[0])), |
688 | p.prefixlen, | |
689 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
690 | api.metric, |
691 | api.tag); | |
a39275d7 | 692 | } |
6aeb9e78 | 693 | bgp_redistribute_delete(bgp, (struct prefix *)&p, api.type, api.instance); |
a39275d7 | 694 | } |
718e3744 | 695 | |
696 | return 0; | |
697 | } | |
698 | ||
699 | #ifdef HAVE_IPV6 | |
700 | /* Zebra route add and delete treatment. */ | |
94f2b392 | 701 | static int |
7076bb2f FL |
702 | zebra_read_ipv6 (int command, struct zclient *zclient, zebra_size_t length, |
703 | vrf_id_t vrf_id) | |
718e3744 | 704 | { |
705 | struct stream *s; | |
706 | struct zapi_ipv6 api; | |
718e3744 | 707 | struct in6_addr nexthop; |
708 | struct prefix_ipv6 p; | |
bc413143 | 709 | unsigned int ifindex; |
d289687f | 710 | int i; |
6aeb9e78 DS |
711 | struct bgp *bgp; |
712 | ||
713 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
714 | if (!bgp) | |
715 | return 0; | |
718e3744 | 716 | |
717 | s = zclient->ibuf; | |
718e3744 | 718 | memset (&nexthop, 0, sizeof (struct in6_addr)); |
719 | ||
720 | /* Type, flags, message. */ | |
721 | api.type = stream_getc (s); | |
7c8ff89e | 722 | api.instance = stream_getw (s); |
0fc452dc | 723 | api.flags = stream_getl (s); |
718e3744 | 724 | api.message = stream_getc (s); |
725 | ||
726 | /* IPv6 prefix. */ | |
727 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
728 | p.family = AF_INET6; | |
d9178828 | 729 | p.prefixlen = MIN(IPV6_MAX_PREFIXLEN, stream_getc (s)); |
718e3744 | 730 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); |
731 | ||
732 | /* Nexthop, ifindex, distance, metric. */ | |
733 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
734 | { | |
735 | api.nexthop_num = stream_getc (s); | |
736 | stream_get (&nexthop, s, 16); | |
737 | } | |
0d9551dc | 738 | |
718e3744 | 739 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) |
740 | { | |
741 | api.ifindex_num = stream_getc (s); | |
bc413143 | 742 | ifindex = stream_getl (s); /* ifindex, unused */ |
718e3744 | 743 | } |
ffd0c037 DS |
744 | else |
745 | { | |
746 | ifindex = 0; | |
747 | } | |
0d9551dc | 748 | |
718e3744 | 749 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) |
750 | api.distance = stream_getc (s); | |
751 | else | |
752 | api.distance = 0; | |
0d9551dc | 753 | |
718e3744 | 754 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) |
755 | api.metric = stream_getl (s); | |
756 | else | |
757 | api.metric = 0; | |
758 | ||
0d9551dc | 759 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG)) |
dc9ffce8 | 760 | api.tag = stream_getl (s); |
0d9551dc DS |
761 | else |
762 | api.tag = 0; | |
763 | ||
718e3744 | 764 | /* Simply ignore link-local address. */ |
765 | if (IN6_IS_ADDR_LINKLOCAL (&p.prefix)) | |
766 | return 0; | |
767 | ||
5048fe14 | 768 | if (command == ZEBRA_REDISTRIBUTE_IPV6_ADD) |
a39275d7 | 769 | { |
ffd0c037 | 770 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 | 771 | { |
f04a80a5 | 772 | char buf[2][INET6_ADDRSTRLEN]; |
dc9ffce8 | 773 | zlog_debug("Rx IPv6 route add VRF %u %s[%d] %s/%d nexthop %s metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 774 | vrf_id, |
7c8ff89e | 775 | zebra_route_string(api.type), api.instance, |
f04a80a5 SH |
776 | inet_ntop(AF_INET6, &p.prefix, buf[0], sizeof(buf[0])), |
777 | p.prefixlen, | |
778 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
779 | api.metric, |
780 | api.tag); | |
a39275d7 | 781 | } |
d289687f | 782 | |
783 | /* | |
784 | * The ADD message is actually an UPDATE and there is no explicit DEL | |
785 | * for a prior redistributed route, if any. So, perform an implicit | |
786 | * DEL processing for the same redistributed route from any other | |
787 | * source type. | |
788 | */ | |
789 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
790 | { | |
791 | if (i != api.type) | |
6aeb9e78 | 792 | bgp_redistribute_delete(bgp, (struct prefix *)&p, i, api.instance); |
d289687f | 793 | } |
794 | ||
6aeb9e78 | 795 | bgp_redistribute_add (bgp, (struct prefix *)&p, NULL, &nexthop, ifindex, |
7c8ff89e | 796 | api.metric, api.type, api.instance, api.tag); |
a39275d7 | 797 | } |
5048fe14 | 798 | else if (command == ZEBRA_REDISTRIBUTE_IPV6_DEL) |
a39275d7 | 799 | { |
ffd0c037 | 800 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 | 801 | { |
f04a80a5 | 802 | char buf[2][INET6_ADDRSTRLEN]; |
ad4cbda1 | 803 | zlog_debug("Rx IPv6 route delete VRF %u %s[%d] %s/%d " |
dc9ffce8 | 804 | "nexthop %s metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 805 | vrf_id, |
7c8ff89e | 806 | zebra_route_string(api.type), api.instance, |
f04a80a5 SH |
807 | inet_ntop(AF_INET6, &p.prefix, buf[0], sizeof(buf[0])), |
808 | p.prefixlen, | |
809 | inet_ntop(AF_INET6, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
810 | api.metric, |
811 | api.tag); | |
a39275d7 | 812 | } |
6aeb9e78 | 813 | bgp_redistribute_delete (bgp, (struct prefix *) &p, api.type, api.instance); |
a39275d7 | 814 | } |
718e3744 | 815 | |
816 | return 0; | |
817 | } | |
818 | #endif /* HAVE_IPV6 */ | |
6b0655a2 | 819 | |
718e3744 | 820 | struct interface * |
6aeb9e78 | 821 | if_lookup_by_ipv4 (struct in_addr *addr, vrf_id_t vrf_id) |
718e3744 | 822 | { |
52dc7ee6 | 823 | struct listnode *ifnode; |
824 | struct listnode *cnode; | |
718e3744 | 825 | struct interface *ifp; |
826 | struct connected *connected; | |
827 | struct prefix_ipv4 p; | |
828 | struct prefix *cp; | |
829 | ||
830 | p.family = AF_INET; | |
831 | p.prefix = *addr; | |
832 | p.prefixlen = IPV4_MAX_BITLEN; | |
833 | ||
6aeb9e78 | 834 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 835 | { |
1eb8ef25 | 836 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 837 | { |
718e3744 | 838 | cp = connected->address; |
839 | ||
840 | if (cp->family == AF_INET) | |
841 | if (prefix_match (cp, (struct prefix *)&p)) | |
842 | return ifp; | |
843 | } | |
844 | } | |
845 | return NULL; | |
846 | } | |
847 | ||
848 | struct interface * | |
6aeb9e78 | 849 | if_lookup_by_ipv4_exact (struct in_addr *addr, vrf_id_t vrf_id) |
718e3744 | 850 | { |
52dc7ee6 | 851 | struct listnode *ifnode; |
852 | struct listnode *cnode; | |
718e3744 | 853 | struct interface *ifp; |
854 | struct connected *connected; | |
855 | struct prefix *cp; | |
856 | ||
6aeb9e78 | 857 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 858 | { |
1eb8ef25 | 859 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 860 | { |
718e3744 | 861 | cp = connected->address; |
862 | ||
863 | if (cp->family == AF_INET) | |
864 | if (IPV4_ADDR_SAME (&cp->u.prefix4, addr)) | |
865 | return ifp; | |
866 | } | |
867 | } | |
868 | return NULL; | |
869 | } | |
870 | ||
871 | #ifdef HAVE_IPV6 | |
872 | struct interface * | |
b892f1dd | 873 | if_lookup_by_ipv6 (struct in6_addr *addr, ifindex_t ifindex, vrf_id_t vrf_id) |
718e3744 | 874 | { |
52dc7ee6 | 875 | struct listnode *ifnode; |
876 | struct listnode *cnode; | |
718e3744 | 877 | struct interface *ifp; |
878 | struct connected *connected; | |
879 | struct prefix_ipv6 p; | |
880 | struct prefix *cp; | |
881 | ||
882 | p.family = AF_INET6; | |
883 | p.prefix = *addr; | |
884 | p.prefixlen = IPV6_MAX_BITLEN; | |
885 | ||
6aeb9e78 | 886 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 887 | { |
1eb8ef25 | 888 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 889 | { |
718e3744 | 890 | cp = connected->address; |
891 | ||
892 | if (cp->family == AF_INET6) | |
893 | if (prefix_match (cp, (struct prefix *)&p)) | |
f2345335 | 894 | { |
2bb913f5 | 895 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) |
f2345335 DS |
896 | { |
897 | if (ifindex == ifp->ifindex) | |
898 | return ifp; | |
899 | } | |
900 | else | |
901 | return ifp; | |
902 | } | |
718e3744 | 903 | } |
904 | } | |
905 | return NULL; | |
906 | } | |
907 | ||
908 | struct interface * | |
b892f1dd | 909 | if_lookup_by_ipv6_exact (struct in6_addr *addr, ifindex_t ifindex, vrf_id_t vrf_id) |
718e3744 | 910 | { |
52dc7ee6 | 911 | struct listnode *ifnode; |
912 | struct listnode *cnode; | |
718e3744 | 913 | struct interface *ifp; |
914 | struct connected *connected; | |
915 | struct prefix *cp; | |
916 | ||
6aeb9e78 | 917 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 918 | { |
1eb8ef25 | 919 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 920 | { |
718e3744 | 921 | cp = connected->address; |
922 | ||
923 | if (cp->family == AF_INET6) | |
924 | if (IPV6_ADDR_SAME (&cp->u.prefix6, addr)) | |
f2345335 DS |
925 | { |
926 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) | |
927 | { | |
928 | if (ifindex == ifp->ifindex) | |
929 | return ifp; | |
930 | } | |
931 | else | |
932 | return ifp; | |
933 | } | |
718e3744 | 934 | } |
935 | } | |
936 | return NULL; | |
937 | } | |
938 | ||
94f2b392 | 939 | static int |
718e3744 | 940 | if_get_ipv6_global (struct interface *ifp, struct in6_addr *addr) |
941 | { | |
52dc7ee6 | 942 | struct listnode *cnode; |
718e3744 | 943 | struct connected *connected; |
944 | struct prefix *cp; | |
945 | ||
1eb8ef25 | 946 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 947 | { |
718e3744 | 948 | cp = connected->address; |
949 | ||
950 | if (cp->family == AF_INET6) | |
951 | if (! IN6_IS_ADDR_LINKLOCAL (&cp->u.prefix6)) | |
952 | { | |
953 | memcpy (addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
954 | return 1; | |
955 | } | |
956 | } | |
957 | return 0; | |
958 | } | |
959 | ||
94f2b392 | 960 | static int |
718e3744 | 961 | if_get_ipv6_local (struct interface *ifp, struct in6_addr *addr) |
962 | { | |
52dc7ee6 | 963 | struct listnode *cnode; |
718e3744 | 964 | struct connected *connected; |
965 | struct prefix *cp; | |
966 | ||
1eb8ef25 | 967 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 968 | { |
718e3744 | 969 | cp = connected->address; |
970 | ||
971 | if (cp->family == AF_INET6) | |
972 | if (IN6_IS_ADDR_LINKLOCAL (&cp->u.prefix6)) | |
973 | { | |
974 | memcpy (addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
975 | return 1; | |
976 | } | |
977 | } | |
978 | return 0; | |
979 | } | |
980 | #endif /* HAVE_IPV6 */ | |
981 | ||
6ee06fa9 PM |
982 | static int |
983 | if_get_ipv4_address (struct interface *ifp, struct in_addr *addr) | |
984 | { | |
985 | struct listnode *cnode; | |
986 | struct connected *connected; | |
987 | struct prefix *cp; | |
988 | ||
989 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) | |
990 | { | |
991 | cp = connected->address; | |
992 | if ((cp->family == AF_INET) && !ipv4_martian(&(cp->u.prefix4))) | |
993 | { | |
994 | *addr = cp->u.prefix4; | |
995 | return 1; | |
996 | } | |
997 | } | |
998 | return 0; | |
999 | } | |
1000 | ||
718e3744 | 1001 | int |
1002 | bgp_nexthop_set (union sockunion *local, union sockunion *remote, | |
1003 | struct bgp_nexthop *nexthop, struct peer *peer) | |
1004 | { | |
1005 | int ret = 0; | |
1006 | struct interface *ifp = NULL; | |
1007 | ||
1008 | memset (nexthop, 0, sizeof (struct bgp_nexthop)); | |
1009 | ||
1010 | if (!local) | |
1011 | return -1; | |
1012 | if (!remote) | |
1013 | return -1; | |
1014 | ||
1015 | if (local->sa.sa_family == AF_INET) | |
1016 | { | |
1017 | nexthop->v4 = local->sin.sin_addr; | |
2fb2f5cf | 1018 | if (peer->update_if) |
6aeb9e78 | 1019 | ifp = if_lookup_by_name_vrf (peer->update_if, peer->bgp->vrf_id); |
2fb2f5cf | 1020 | else |
6aeb9e78 | 1021 | ifp = if_lookup_by_ipv4_exact (&local->sin.sin_addr, peer->bgp->vrf_id); |
718e3744 | 1022 | } |
1023 | #ifdef HAVE_IPV6 | |
1024 | if (local->sa.sa_family == AF_INET6) | |
1025 | { | |
1026 | if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr)) | |
1027 | { | |
a80beece | 1028 | if (peer->conf_if || peer->ifname) |
322e5964 | 1029 | ifp = if_lookup_by_name_vrf (peer->conf_if ? peer->conf_if : peer->ifname, peer->bgp->vrf_id); |
718e3744 | 1030 | } |
2fb2f5cf | 1031 | else if (peer->update_if) |
6aeb9e78 | 1032 | ifp = if_lookup_by_name_vrf (peer->update_if, peer->bgp->vrf_id); |
718e3744 | 1033 | else |
f2345335 | 1034 | ifp = if_lookup_by_ipv6_exact (&local->sin6.sin6_addr, |
6aeb9e78 DS |
1035 | local->sin6.sin6_scope_id, |
1036 | peer->bgp->vrf_id); | |
718e3744 | 1037 | } |
1038 | #endif /* HAVE_IPV6 */ | |
1039 | ||
1040 | if (!ifp) | |
1041 | return -1; | |
1042 | ||
1043 | nexthop->ifp = ifp; | |
1044 | ||
e33a4880 | 1045 | /* IPv4 connection, fetch and store IPv6 local address(es) if any. */ |
718e3744 | 1046 | if (local->sa.sa_family == AF_INET) |
1047 | { | |
1048 | #ifdef HAVE_IPV6 | |
1049 | /* IPv6 nexthop*/ | |
1050 | ret = if_get_ipv6_global (ifp, &nexthop->v6_global); | |
1051 | ||
718e3744 | 1052 | if (!ret) |
003c1ba0 | 1053 | { |
1054 | /* There is no global nexthop. Use link-local address as both the | |
1055 | * global and link-local nexthop. In this scenario, the expectation | |
1056 | * for interop is that the network admin would use a route-map to | |
1057 | * specify the global IPv6 nexthop. | |
1058 | */ | |
1059 | if_get_ipv6_local (ifp, &nexthop->v6_global); | |
1060 | memcpy (&nexthop->v6_local, &nexthop->v6_global, | |
1061 | IPV6_MAX_BYTELEN); | |
1062 | } | |
718e3744 | 1063 | else |
1064 | if_get_ipv6_local (ifp, &nexthop->v6_local); | |
003c1ba0 | 1065 | |
6aeb9e78 | 1066 | if (if_lookup_by_ipv4 (&remote->sin.sin_addr, peer->bgp->vrf_id)) |
003c1ba0 | 1067 | peer->shared_network = 1; |
1068 | else | |
1069 | peer->shared_network = 0; | |
718e3744 | 1070 | #endif /* HAVE_IPV6 */ |
1071 | } | |
1072 | ||
1073 | #ifdef HAVE_IPV6 | |
e33a4880 | 1074 | /* IPv6 connection, fetch and store IPv4 local address if any. */ |
718e3744 | 1075 | if (local->sa.sa_family == AF_INET6) |
1076 | { | |
1077 | struct interface *direct = NULL; | |
1078 | ||
6ee06fa9 PM |
1079 | /* IPv4 nexthop. */ |
1080 | ret = if_get_ipv4_address(ifp, &nexthop->v4); | |
1081 | if (!ret && peer->local_id.s_addr) | |
718e3744 | 1082 | nexthop->v4 = peer->local_id; |
1083 | ||
1084 | /* Global address*/ | |
1085 | if (! IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr)) | |
1086 | { | |
1087 | memcpy (&nexthop->v6_global, &local->sin6.sin6_addr, | |
1088 | IPV6_MAX_BYTELEN); | |
1089 | ||
1090 | /* If directory connected set link-local address. */ | |
f2345335 | 1091 | direct = if_lookup_by_ipv6 (&remote->sin6.sin6_addr, |
6aeb9e78 | 1092 | remote->sin6.sin6_scope_id, peer->bgp->vrf_id); |
718e3744 | 1093 | if (direct) |
1094 | if_get_ipv6_local (ifp, &nexthop->v6_local); | |
1095 | } | |
1096 | else | |
1097 | /* Link-local address. */ | |
1098 | { | |
1099 | ret = if_get_ipv6_global (ifp, &nexthop->v6_global); | |
1100 | ||
1101 | /* If there is no global address. Set link-local address as | |
1102 | global. I know this break RFC specification... */ | |
b2b926d5 DS |
1103 | /* In this scenario, the expectation for interop is that the |
1104 | * network admin would use a route-map to specify the global | |
1105 | * IPv6 nexthop. | |
1106 | */ | |
718e3744 | 1107 | if (!ret) |
1108 | memcpy (&nexthop->v6_global, &local->sin6.sin6_addr, | |
1109 | IPV6_MAX_BYTELEN); | |
b2b926d5 DS |
1110 | /* Always set the link-local address */ |
1111 | memcpy (&nexthop->v6_local, &local->sin6.sin6_addr, | |
1112 | IPV6_MAX_BYTELEN); | |
718e3744 | 1113 | } |
718e3744 | 1114 | |
003c1ba0 | 1115 | if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr) || |
6aeb9e78 DS |
1116 | if_lookup_by_ipv6 (&remote->sin6.sin6_addr, remote->sin6.sin6_scope_id, |
1117 | peer->bgp->vrf_id)) | |
003c1ba0 | 1118 | peer->shared_network = 1; |
1119 | else | |
1120 | peer->shared_network = 0; | |
1121 | } | |
718e3744 | 1122 | |
1123 | /* KAME stack specific treatment. */ | |
1124 | #ifdef KAME | |
1125 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_global) | |
1126 | && IN6_LINKLOCAL_IFINDEX (nexthop->v6_global)) | |
1127 | { | |
1128 | SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_global, 0); | |
1129 | } | |
1130 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_local) | |
1131 | && IN6_LINKLOCAL_IFINDEX (nexthop->v6_local)) | |
1132 | { | |
1133 | SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_local, 0); | |
1134 | } | |
1135 | #endif /* KAME */ | |
1136 | #endif /* HAVE_IPV6 */ | |
e33a4880 | 1137 | |
1138 | /* If we have identified the local interface, there is no error for now. */ | |
1139 | return 0; | |
718e3744 | 1140 | } |
1141 | ||
73ac8160 DS |
1142 | static struct in6_addr * |
1143 | bgp_info_to_ipv6_nexthop (struct bgp_info *info) | |
1144 | { | |
1145 | struct in6_addr *nexthop = NULL; | |
1146 | ||
1147 | /* Only global address nexthop exists. */ | |
801a9bcc | 1148 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL) |
73ac8160 DS |
1149 | nexthop = &info->attr->extra->mp_nexthop_global; |
1150 | ||
1151 | /* If both global and link-local address present. */ | |
801a9bcc | 1152 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 | 1153 | { |
161995ea DS |
1154 | /* Check if route-map is set to prefer global over link-local */ |
1155 | if (info->attr->extra->mp_nexthop_prefer_global) | |
1156 | nexthop = &info->attr->extra->mp_nexthop_global; | |
73ac8160 | 1157 | else |
161995ea DS |
1158 | { |
1159 | /* Workaround for Cisco's nexthop bug. */ | |
1160 | if (IN6_IS_ADDR_UNSPECIFIED (&info->attr->extra->mp_nexthop_global) | |
1161 | && info->peer->su_remote->sa.sa_family == AF_INET6) | |
1162 | nexthop = &info->peer->su_remote->sin6.sin6_addr; | |
1163 | else | |
1164 | nexthop = &info->attr->extra->mp_nexthop_local; | |
1165 | } | |
73ac8160 DS |
1166 | } |
1167 | ||
1168 | return nexthop; | |
1169 | } | |
1170 | ||
1171 | static int | |
1172 | bgp_table_map_apply (struct route_map *map, struct prefix *p, | |
1173 | struct bgp_info *info) | |
1174 | { | |
1175 | if (route_map_apply(map, p, RMAP_BGP, info) != RMAP_DENYMATCH) | |
1176 | return 1; | |
1177 | ||
16286195 | 1178 | if (bgp_debug_zebra(p)) |
73ac8160 DS |
1179 | { |
1180 | if (p->family == AF_INET) | |
1181 | { | |
1182 | char buf[2][INET_ADDRSTRLEN]; | |
1183 | zlog_debug("Zebra rmap deny: IPv4 route %s/%d nexthop %s", | |
1184 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), | |
1185 | p->prefixlen, | |
1186 | inet_ntop(AF_INET, &info->attr->nexthop, buf[1], | |
1187 | sizeof(buf[1]))); | |
1188 | } | |
1189 | if (p->family == AF_INET6) | |
1190 | { | |
1191 | char buf[2][INET6_ADDRSTRLEN]; | |
1192 | zlog_debug("Zebra rmap deny: IPv6 route %s/%d nexthop %s", | |
1193 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), | |
1194 | p->prefixlen, | |
1195 | inet_ntop(AF_INET6, bgp_info_to_ipv6_nexthop(info), buf[1], | |
1196 | sizeof(buf[1]))); | |
1197 | } | |
1198 | } | |
1199 | return 0; | |
1200 | } | |
1201 | ||
718e3744 | 1202 | void |
73ac8160 DS |
1203 | bgp_zebra_announce (struct prefix *p, struct bgp_info *info, struct bgp *bgp, |
1204 | afi_t afi, safi_t safi) | |
718e3744 | 1205 | { |
0fc452dc | 1206 | u_int32_t flags; |
718e3744 | 1207 | u_char distance; |
1208 | struct peer *peer; | |
8196f13d JB |
1209 | struct bgp_info *mpinfo; |
1210 | size_t oldsize, newsize; | |
73ac8160 DS |
1211 | u_int32_t nhcount, metric; |
1212 | struct bgp_info local_info; | |
1213 | struct bgp_info *info_cp = &local_info; | |
dc9ffce8 | 1214 | route_tag_t tag; |
718e3744 | 1215 | |
ad4cbda1 | 1216 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't |
1217 | * know of this instance. | |
1218 | */ | |
1219 | if (!bgp_install_info_to_zebra (bgp)) | |
718e3744 | 1220 | return; |
1221 | ||
7076bb2f | 1222 | if ((p->family == AF_INET && |
6aeb9e78 | 1223 | !vrf_bitmap_check (zclient->redist[AFI_IP][ZEBRA_ROUTE_BGP], bgp->vrf_id)) |
7076bb2f | 1224 | || (p->family == AF_INET6 && |
6aeb9e78 | 1225 | !vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_BGP], bgp->vrf_id))) |
718e3744 | 1226 | return; |
1227 | ||
4a16ae86 DS |
1228 | if (bgp->main_zebra_update_hold) |
1229 | return; | |
1230 | ||
718e3744 | 1231 | flags = 0; |
1232 | peer = info->peer; | |
1233 | ||
0d9551dc DS |
1234 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1235 | tag = info->attr->extra->tag; | |
1236 | else | |
1237 | tag = 0; | |
1238 | ||
f992e2a9 DS |
1239 | /* When we create an aggregate route we must also install a Null0 route in |
1240 | * the RIB */ | |
1241 | if (info->sub_type == BGP_ROUTE_AGGREGATE) | |
1242 | SET_FLAG (flags, ZEBRA_FLAG_BLACKHOLE); | |
1243 | ||
1244 | if (peer->sort == BGP_PEER_IBGP || peer->sort == BGP_PEER_CONFED || | |
1245 | info->sub_type == BGP_ROUTE_AGGREGATE) | |
718e3744 | 1246 | { |
1247 | SET_FLAG (flags, ZEBRA_FLAG_IBGP); | |
1248 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); | |
1249 | } | |
1250 | ||
6d85b15b | 1251 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
907f92c8 DS |
1252 | || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) |
1253 | || bgp_flag_check(bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
1254 | ||
718e3744 | 1255 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); |
1256 | ||
431aa9f9 | 1257 | nhcount = 1 + bgp_info_mpath_count (info); |
8196f13d | 1258 | |
8a92a8a0 | 1259 | if (p->family == AF_INET && !BGP_ATTR_NEXTHOP_AFI_IP6(info->attr)) |
718e3744 | 1260 | { |
1261 | struct zapi_ipv4 api; | |
1262 | struct in_addr *nexthop; | |
73ac8160 DS |
1263 | char buf[2][INET_ADDRSTRLEN]; |
1264 | int valid_nh_count = 0; | |
718e3744 | 1265 | |
431aa9f9 DS |
1266 | /* resize nexthop buffer size if necessary */ |
1267 | if ((oldsize = stream_get_size (bgp_nexthop_buf)) < | |
1268 | (sizeof (struct in_addr *) * nhcount)) | |
1269 | { | |
1270 | newsize = (sizeof (struct in_addr *) * nhcount); | |
1271 | newsize = stream_resize (bgp_nexthop_buf, newsize); | |
1272 | if (newsize == oldsize) | |
1273 | { | |
1274 | zlog_err ("can't resize nexthop buffer"); | |
1275 | return; | |
1276 | } | |
1277 | } | |
1278 | stream_reset (bgp_nexthop_buf); | |
73ac8160 DS |
1279 | nexthop = NULL; |
1280 | ||
1281 | /* Metric is currently based on the best-path only. */ | |
1282 | metric = info->attr->med; | |
1283 | ||
1284 | if (bgp->table_map[afi][safi].name) | |
1285 | { | |
1286 | BGP_INFO_ATTR_BUF_INIT(); | |
1287 | ||
1288 | /* Copy info and attributes, so the route-map apply doesn't modify the | |
1289 | BGP route info. */ | |
1290 | BGP_INFO_ATTR_BUF_COPY(info, info_cp); | |
1291 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1292 | { | |
1293 | metric = info_cp->attr->med; | |
1294 | nexthop = &info_cp->attr->nexthop; | |
0d9551dc DS |
1295 | |
1296 | if (info_cp->attr->extra) | |
1297 | tag = info_cp->attr->extra->tag; | |
73ac8160 DS |
1298 | } |
1299 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1300 | } | |
1301 | else | |
1302 | { | |
1303 | nexthop = &info->attr->nexthop; | |
1304 | } | |
1305 | ||
1306 | if (nexthop) | |
1307 | { | |
1308 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in_addr *)); | |
1309 | valid_nh_count++; | |
1310 | } | |
431aa9f9 | 1311 | |
8196f13d | 1312 | for (mpinfo = bgp_info_mpath_first (info); mpinfo; |
73ac8160 DS |
1313 | mpinfo = bgp_info_mpath_next (mpinfo)) |
1314 | { | |
1315 | nexthop = NULL; | |
1316 | ||
1317 | if (bgp->table_map[afi][safi].name) | |
1318 | { | |
1319 | /* Copy info and attributes, so the route-map apply doesn't modify the | |
1320 | BGP route info. */ | |
1321 | BGP_INFO_ATTR_BUF_COPY(mpinfo, info_cp); | |
1322 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1323 | nexthop = &info_cp->attr->nexthop; | |
1324 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1325 | } | |
1326 | else | |
1327 | { | |
1328 | nexthop = &mpinfo->attr->nexthop; | |
1329 | } | |
1330 | ||
1331 | if (nexthop == NULL) | |
1332 | continue; | |
1333 | ||
1334 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in_addr *)); | |
1335 | valid_nh_count++; | |
1336 | } | |
718e3744 | 1337 | |
6aeb9e78 | 1338 | api.vrf_id = bgp->vrf_id; |
73ac8160 | 1339 | api.flags = flags; |
718e3744 | 1340 | api.type = ZEBRA_ROUTE_BGP; |
7c8ff89e | 1341 | api.instance = 0; |
718e3744 | 1342 | api.message = 0; |
5a616c08 | 1343 | api.safi = safi; |
718e3744 | 1344 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
f992e2a9 DS |
1345 | |
1346 | /* Note that this currently only applies to Null0 routes for aggregates. | |
1347 | * ZEBRA_FLAG_BLACKHOLE signals zapi_ipv4_route to encode a special | |
1348 | * BLACKHOLE nexthop. We want to set api.nexthop_num to zero since we | |
1349 | * do not want to also encode the 0.0.0.0 nexthop for the aggregate route. | |
1350 | */ | |
1351 | if (CHECK_FLAG(flags, ZEBRA_FLAG_BLACKHOLE)) | |
1352 | api.nexthop_num = 0; | |
1353 | else | |
1354 | api.nexthop_num = valid_nh_count; | |
1355 | ||
8196f13d | 1356 | api.nexthop = (struct in_addr **)STREAM_DATA (bgp_nexthop_buf); |
718e3744 | 1357 | api.ifindex_num = 0; |
1358 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
73ac8160 | 1359 | api.metric = metric; |
d2921c7a | 1360 | api.tag = 0; |
718e3744 | 1361 | |
0d9551dc DS |
1362 | if (tag) |
1363 | { | |
1364 | SET_FLAG (api.message, ZAPI_MESSAGE_TAG); | |
1365 | api.tag = tag; | |
1366 | } | |
1367 | ||
718e3744 | 1368 | distance = bgp_distance_apply (p, info, bgp); |
1369 | ||
1370 | if (distance) | |
1371 | { | |
1372 | SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE); | |
1373 | api.distance = distance; | |
1374 | } | |
a39275d7 | 1375 | |
16286195 | 1376 | if (bgp_debug_zebra(p)) |
73ac8160 DS |
1377 | { |
1378 | int i; | |
dc9ffce8 | 1379 | zlog_debug("Tx IPv4 route %s VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI |
73ac8160 | 1380 | " count %d", (valid_nh_count ? "add":"delete"), |
ad4cbda1 | 1381 | bgp->vrf_id, |
73ac8160 | 1382 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
0d9551dc | 1383 | p->prefixlen, api.metric, api.tag, api.nexthop_num); |
73ac8160 DS |
1384 | for (i = 0; i < api.nexthop_num; i++) |
1385 | zlog_debug(" IPv4 [nexthop %d] %s", i+1, | |
1386 | inet_ntop(AF_INET, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1387 | } | |
a39275d7 | 1388 | |
73ac8160 DS |
1389 | zapi_ipv4_route (valid_nh_count ? ZEBRA_IPV4_ROUTE_ADD: ZEBRA_IPV4_ROUTE_DELETE, |
1390 | zclient, (struct prefix_ipv4 *) p, &api); | |
718e3744 | 1391 | } |
1392 | #ifdef HAVE_IPV6 | |
431aa9f9 | 1393 | |
718e3744 | 1394 | /* We have to think about a IPv6 link-local address curse. */ |
8a92a8a0 DS |
1395 | if (p->family == AF_INET6 || |
1396 | (p->family == AF_INET && BGP_ATTR_NEXTHOP_AFI_IP6(info->attr))) | |
718e3744 | 1397 | { |
b892f1dd | 1398 | ifindex_t ifindex; |
718e3744 | 1399 | struct in6_addr *nexthop; |
1400 | struct zapi_ipv6 api; | |
431aa9f9 | 1401 | int valid_nh_count = 0; |
73ac8160 | 1402 | char buf[2][INET6_ADDRSTRLEN]; |
431aa9f9 DS |
1403 | |
1404 | /* resize nexthop buffer size if necessary */ | |
1405 | if ((oldsize = stream_get_size (bgp_nexthop_buf)) < | |
1406 | (sizeof (struct in6_addr *) * nhcount)) | |
1407 | { | |
1408 | newsize = (sizeof (struct in6_addr *) * nhcount); | |
1409 | newsize = stream_resize (bgp_nexthop_buf, newsize); | |
1410 | if (newsize == oldsize) | |
1411 | { | |
1412 | zlog_err ("can't resize nexthop buffer"); | |
1413 | return; | |
1414 | } | |
1415 | } | |
1416 | stream_reset (bgp_nexthop_buf); | |
1417 | ||
1418 | /* resize ifindices buffer size if necessary */ | |
1419 | if ((oldsize = stream_get_size (bgp_ifindices_buf)) < | |
1420 | (sizeof (unsigned int) * nhcount)) | |
1421 | { | |
1422 | newsize = (sizeof (unsigned int) * nhcount); | |
1423 | newsize = stream_resize (bgp_ifindices_buf, newsize); | |
1424 | if (newsize == oldsize) | |
1425 | { | |
1426 | zlog_err ("can't resize nexthop buffer"); | |
1427 | return; | |
1428 | } | |
1429 | } | |
1430 | stream_reset (bgp_ifindices_buf); | |
718e3744 | 1431 | |
1432 | ifindex = 0; | |
1433 | nexthop = NULL; | |
431aa9f9 | 1434 | |
fb982c25 | 1435 | assert (info->attr->extra); |
718e3744 | 1436 | |
73ac8160 DS |
1437 | /* Metric is currently based on the best-path only. */ |
1438 | metric = info->attr->med; | |
1439 | ||
1440 | if (bgp->table_map[afi][safi].name) | |
1441 | { | |
1442 | BGP_INFO_ATTR_BUF_INIT(); | |
718e3744 | 1443 | |
73ac8160 DS |
1444 | /* Copy info and attributes, so the route-map apply doesn't modify the |
1445 | BGP route info. */ | |
1446 | BGP_INFO_ATTR_BUF_COPY(info, info_cp); | |
1447 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1448 | { | |
1449 | metric = info_cp->attr->med; | |
1450 | nexthop = bgp_info_to_ipv6_nexthop(info_cp); | |
0d9551dc DS |
1451 | |
1452 | if (info_cp->attr->extra) | |
1453 | tag = info_cp->attr->extra->tag; | |
73ac8160 DS |
1454 | } |
1455 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1456 | } | |
1457 | else | |
1458 | { | |
1459 | nexthop = bgp_info_to_ipv6_nexthop(info); | |
1460 | } | |
718e3744 | 1461 | |
73ac8160 DS |
1462 | if (nexthop) |
1463 | { | |
801a9bcc | 1464 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
1465 | if (info->peer->nexthop.ifp) |
1466 | ifindex = info->peer->nexthop.ifp->ifindex; | |
1467 | ||
1468 | if (!ifindex) | |
ffd0c037 DS |
1469 | { |
1470 | if (info->peer->conf_if || info->peer->ifname) | |
1471 | ifindex = if_nametoindex (info->peer->conf_if ? info->peer->conf_if : info->peer->ifname); | |
1472 | else if (info->peer->nexthop.ifp) | |
1473 | ifindex = info->peer->nexthop.ifp->ifindex; | |
1474 | } | |
73ac8160 DS |
1475 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in6_addr *)); |
1476 | stream_put (bgp_ifindices_buf, &ifindex, sizeof (unsigned int)); | |
1477 | valid_nh_count++; | |
1478 | } | |
431aa9f9 DS |
1479 | |
1480 | for (mpinfo = bgp_info_mpath_first (info); mpinfo; | |
1481 | mpinfo = bgp_info_mpath_next (mpinfo)) | |
73ac8160 DS |
1482 | { |
1483 | ifindex = 0; | |
1484 | nexthop = NULL; | |
000830bd | 1485 | |
73ac8160 | 1486 | if (bgp->table_map[afi][safi].name) |
431aa9f9 | 1487 | { |
73ac8160 DS |
1488 | /* Copy info and attributes, so the route-map apply doesn't modify the |
1489 | BGP route info. */ | |
1490 | BGP_INFO_ATTR_BUF_COPY(mpinfo, info_cp); | |
1491 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1492 | nexthop = bgp_info_to_ipv6_nexthop(info_cp); | |
1493 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1494 | } | |
1495 | else | |
1496 | { | |
1497 | nexthop = bgp_info_to_ipv6_nexthop(mpinfo); | |
431aa9f9 | 1498 | } |
431aa9f9 | 1499 | |
73ac8160 DS |
1500 | if (nexthop == NULL) |
1501 | continue; | |
1502 | ||
801a9bcc | 1503 | if (mpinfo->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
1504 | if (mpinfo->peer->nexthop.ifp) |
1505 | ifindex = mpinfo->peer->nexthop.ifp->ifindex; | |
000830bd DS |
1506 | |
1507 | if (!ifindex) | |
ffd0c037 DS |
1508 | { |
1509 | if (mpinfo->peer->conf_if || mpinfo->peer->ifname) | |
322e5964 | 1510 | ifindex = ifname2ifindex (mpinfo->peer->conf_if ? mpinfo->peer->conf_if : mpinfo->peer->ifname); |
ffd0c037 DS |
1511 | else if (mpinfo->peer->nexthop.ifp) |
1512 | ifindex = mpinfo->peer->nexthop.ifp->ifindex; | |
1513 | } | |
73ac8160 DS |
1514 | if (ifindex == 0) |
1515 | continue; | |
431aa9f9 DS |
1516 | |
1517 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in6_addr *)); | |
1518 | stream_put (bgp_ifindices_buf, &ifindex, sizeof (unsigned int)); | |
1519 | valid_nh_count++; | |
73ac8160 | 1520 | } |
718e3744 | 1521 | |
1522 | /* Make Zebra API structure. */ | |
6aeb9e78 | 1523 | api.vrf_id = bgp->vrf_id; |
718e3744 | 1524 | api.flags = flags; |
1525 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1526 | api.instance = 0; |
718e3744 | 1527 | api.message = 0; |
c7ec179a | 1528 | api.safi = safi; |
718e3744 | 1529 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
f992e2a9 DS |
1530 | |
1531 | /* Note that this currently only applies to Null0 routes for aggregates. | |
1532 | * ZEBRA_FLAG_BLACKHOLE signals zapi_ipv6_route to encode a special | |
1533 | * BLACKHOLE nexthop. We want to set api.nexthop_num to zero since we | |
1534 | * do not want to also encode the :: nexthop for the aggregate route. | |
1535 | */ | |
1536 | if (CHECK_FLAG(flags, ZEBRA_FLAG_BLACKHOLE)) | |
1537 | api.nexthop_num = 0; | |
1538 | else | |
1539 | api.nexthop_num = valid_nh_count; | |
1540 | ||
431aa9f9 | 1541 | api.nexthop = (struct in6_addr **)STREAM_DATA (bgp_nexthop_buf); |
718e3744 | 1542 | SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX); |
431aa9f9 | 1543 | api.ifindex_num = valid_nh_count; |
b892f1dd | 1544 | api.ifindex = (ifindex_t *)STREAM_DATA (bgp_ifindices_buf); |
718e3744 | 1545 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); |
73ac8160 | 1546 | api.metric = metric; |
d2921c7a | 1547 | api.tag = 0; |
718e3744 | 1548 | |
0d9551dc DS |
1549 | if (tag) |
1550 | { | |
1551 | SET_FLAG (api.message, ZAPI_MESSAGE_TAG); | |
1552 | api.tag = tag; | |
1553 | } | |
1554 | ||
8a92a8a0 | 1555 | if (p->family == AF_INET) |
73ac8160 | 1556 | { |
8a92a8a0 DS |
1557 | if (bgp_debug_zebra(p)) |
1558 | { | |
1559 | int i; | |
dc9ffce8 | 1560 | zlog_debug("Tx IPv4 route %s VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 1561 | valid_nh_count ? "add" : "delete", bgp->vrf_id, |
8a92a8a0 DS |
1562 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
1563 | p->prefixlen, api.metric, api.tag); | |
1564 | for (i = 0; i < api.nexthop_num; i++) | |
1565 | zlog_debug(" IPv6 [nexthop %d] %s", i+1, | |
1566 | inet_ntop(AF_INET6, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1567 | } | |
1568 | ||
1569 | if (valid_nh_count) | |
1570 | zapi_ipv4_route_ipv6_nexthop (ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD, | |
88177fe3 DS |
1571 | zclient, (struct prefix_ipv4 *) p, |
1572 | (struct zapi_ipv6 *)&api); | |
8a92a8a0 DS |
1573 | else |
1574 | zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, | |
88177fe3 | 1575 | zclient, (struct prefix_ipv4 *) p, (struct zapi_ipv4 *)&api); |
73ac8160 | 1576 | } |
8a92a8a0 DS |
1577 | else |
1578 | { | |
1579 | if (bgp_debug_zebra(p)) | |
1580 | { | |
1581 | int i; | |
dc9ffce8 | 1582 | zlog_debug("Tx IPv6 route %s VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 1583 | valid_nh_count ? "add" : "delete", bgp->vrf_id, |
8a92a8a0 DS |
1584 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), |
1585 | p->prefixlen, api.metric, api.tag); | |
1586 | for (i = 0; i < api.nexthop_num; i++) | |
1587 | zlog_debug(" IPv6 [nexthop %d] %s", i+1, | |
1588 | inet_ntop(AF_INET6, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1589 | } | |
a39275d7 | 1590 | |
8a92a8a0 DS |
1591 | zapi_ipv6_route (valid_nh_count ? |
1592 | ZEBRA_IPV6_ROUTE_ADD : ZEBRA_IPV6_ROUTE_DELETE, | |
1593 | zclient, (struct prefix_ipv6 *) p, &api); | |
1594 | } | |
718e3744 | 1595 | } |
1596 | #endif /* HAVE_IPV6 */ | |
1597 | } | |
1598 | ||
73ac8160 DS |
1599 | /* Announce all routes of a table to zebra */ |
1600 | void | |
1601 | bgp_zebra_announce_table (struct bgp *bgp, afi_t afi, safi_t safi) | |
1602 | { | |
1603 | struct bgp_node *rn; | |
1604 | struct bgp_table *table; | |
1605 | struct bgp_info *ri; | |
1606 | ||
ad4cbda1 | 1607 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't |
1608 | * know of this instance. | |
1609 | */ | |
1610 | if (!bgp_install_info_to_zebra (bgp)) | |
1611 | return; | |
1612 | ||
73ac8160 | 1613 | table = bgp->rib[afi][safi]; |
4a16ae86 | 1614 | if (!table) return; |
73ac8160 DS |
1615 | |
1616 | for (rn = bgp_table_top (table); rn; rn = bgp_route_next (rn)) | |
1617 | for (ri = rn->info; ri; ri = ri->next) | |
1618 | if (CHECK_FLAG (ri->flags, BGP_INFO_SELECTED) | |
1619 | && ri->type == ZEBRA_ROUTE_BGP | |
1620 | && ri->sub_type == BGP_ROUTE_NORMAL) | |
1621 | bgp_zebra_announce (&rn->p, ri, bgp, afi, safi); | |
1622 | } | |
1623 | ||
718e3744 | 1624 | void |
5a616c08 | 1625 | bgp_zebra_withdraw (struct prefix *p, struct bgp_info *info, safi_t safi) |
718e3744 | 1626 | { |
0fc452dc | 1627 | u_int32_t flags; |
718e3744 | 1628 | struct peer *peer; |
1629 | ||
6aeb9e78 | 1630 | peer = info->peer; |
ad4cbda1 | 1631 | assert(peer); |
1632 | ||
1633 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't | |
1634 | * know of this instance. | |
1635 | */ | |
1636 | if (!bgp_install_info_to_zebra (peer->bgp)) | |
1637 | return; | |
6aeb9e78 | 1638 | |
7076bb2f | 1639 | if ((p->family == AF_INET && |
6aeb9e78 | 1640 | !vrf_bitmap_check (zclient->redist[AFI_IP][ZEBRA_ROUTE_BGP], peer->bgp->vrf_id)) |
7076bb2f | 1641 | || (p->family == AF_INET6 && |
6aeb9e78 | 1642 | !vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_BGP], peer->bgp->vrf_id))) |
718e3744 | 1643 | return; |
1644 | ||
718e3744 | 1645 | flags = 0; |
1646 | ||
6d85b15b | 1647 | if (peer->sort == BGP_PEER_IBGP) |
718e3744 | 1648 | { |
1649 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); | |
1650 | SET_FLAG (flags, ZEBRA_FLAG_IBGP); | |
1651 | } | |
1652 | ||
6d85b15b | 1653 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
907f92c8 DS |
1654 | || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) |
1655 | || bgp_flag_check(peer->bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
718e3744 | 1656 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); |
1657 | ||
1658 | if (p->family == AF_INET) | |
1659 | { | |
1660 | struct zapi_ipv4 api; | |
718e3744 | 1661 | |
6aeb9e78 | 1662 | api.vrf_id = peer->bgp->vrf_id; |
718e3744 | 1663 | api.flags = flags; |
718e3744 | 1664 | |
1665 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1666 | api.instance = 0; |
718e3744 | 1667 | api.message = 0; |
5a616c08 | 1668 | api.safi = safi; |
718e3744 | 1669 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
76145957 DS |
1670 | api.nexthop_num = 0; |
1671 | api.nexthop = NULL; | |
718e3744 | 1672 | api.ifindex_num = 0; |
1673 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
1674 | api.metric = info->attr->med; | |
d2921c7a | 1675 | api.tag = 0; |
718e3744 | 1676 | |
0d9551dc DS |
1677 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1678 | { | |
1679 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1680 | api.tag = info->attr->extra->tag; | |
1681 | } | |
1682 | ||
16286195 | 1683 | if (bgp_debug_zebra(p)) |
a39275d7 AS |
1684 | { |
1685 | char buf[2][INET_ADDRSTRLEN]; | |
dc9ffce8 | 1686 | zlog_debug("Tx IPv4 route delete VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 1687 | peer->bgp->vrf_id, |
a39275d7 | 1688 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
fbf288a5 | 1689 | p->prefixlen, api.metric, api.tag); |
a39275d7 AS |
1690 | } |
1691 | ||
0a589359 | 1692 | zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, zclient, |
1693 | (struct prefix_ipv4 *) p, &api); | |
718e3744 | 1694 | } |
1695 | #ifdef HAVE_IPV6 | |
1696 | /* We have to think about a IPv6 link-local address curse. */ | |
1697 | if (p->family == AF_INET6) | |
1698 | { | |
1699 | struct zapi_ipv6 api; | |
fb982c25 PJ |
1700 | |
1701 | assert (info->attr->extra); | |
322e5964 | 1702 | |
6aeb9e78 | 1703 | api.vrf_id = peer->bgp->vrf_id; |
718e3744 | 1704 | api.flags = flags; |
1705 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1706 | api.instance = 0; |
718e3744 | 1707 | api.message = 0; |
c7ec179a | 1708 | api.safi = safi; |
718e3744 | 1709 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
fbf288a5 DS |
1710 | api.nexthop_num = 0; |
1711 | api.nexthop = NULL; | |
1712 | api.ifindex_num = 0; | |
718e3744 | 1713 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); |
1714 | api.metric = info->attr->med; | |
d2921c7a | 1715 | api.tag = 0; |
718e3744 | 1716 | |
0d9551dc DS |
1717 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1718 | { | |
1719 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1720 | api.tag = info->attr->extra->tag; | |
1721 | } | |
1722 | ||
16286195 | 1723 | if (bgp_debug_zebra(p)) |
a39275d7 AS |
1724 | { |
1725 | char buf[2][INET6_ADDRSTRLEN]; | |
dc9ffce8 | 1726 | zlog_debug("Tx IPv6 route delete VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 1727 | peer->bgp->vrf_id, |
a39275d7 | 1728 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), |
fbf288a5 | 1729 | p->prefixlen, api.metric, api.tag); |
a39275d7 AS |
1730 | } |
1731 | ||
0a589359 | 1732 | zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, |
1733 | (struct prefix_ipv6 *) p, &api); | |
718e3744 | 1734 | } |
1735 | #endif /* HAVE_IPV6 */ | |
1736 | } | |
7c8ff89e DS |
1737 | struct bgp_redist * |
1738 | bgp_redist_lookup (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1739 | { | |
1740 | struct list *red_list; | |
1741 | struct listnode *node; | |
1742 | struct bgp_redist *red; | |
1743 | ||
1744 | red_list = bgp->redist[afi][type]; | |
1745 | if (!red_list) | |
1746 | return(NULL); | |
1747 | ||
1748 | for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) | |
1749 | if (red->instance == instance) | |
1750 | return red; | |
1751 | ||
1752 | return NULL; | |
1753 | } | |
1754 | ||
1755 | struct bgp_redist * | |
1756 | bgp_redist_add (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1757 | { | |
1758 | struct list *red_list; | |
1759 | struct bgp_redist *red; | |
1760 | ||
1761 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1762 | if (red) | |
1763 | return red; | |
1764 | ||
1765 | if (!bgp->redist[afi][type]) | |
1766 | bgp->redist[afi][type] = list_new(); | |
1767 | ||
1768 | red_list = bgp->redist[afi][type]; | |
6e919709 | 1769 | red = (struct bgp_redist *)XCALLOC(MTYPE_BGP_REDIST, sizeof(struct bgp_redist)); |
7c8ff89e DS |
1770 | red->instance = instance; |
1771 | ||
1772 | listnode_add(red_list, red); | |
1773 | ||
1774 | return red; | |
1775 | } | |
1776 | ||
1777 | static void | |
1778 | bgp_redist_del (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1779 | { | |
1780 | struct bgp_redist *red; | |
1781 | ||
1782 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1783 | ||
1784 | if (red) | |
1785 | { | |
1786 | listnode_delete(bgp->redist[afi][type], red); | |
1787 | if (!bgp->redist[afi][type]->count) | |
1788 | { | |
1789 | list_free(bgp->redist[afi][type]); | |
1790 | bgp->redist[afi][type] = NULL; | |
1791 | } | |
1792 | } | |
1793 | } | |
6b0655a2 | 1794 | |
718e3744 | 1795 | /* Other routes redistribution into BGP. */ |
1796 | int | |
6aeb9e78 | 1797 | bgp_redistribute_set (struct bgp *bgp, afi_t afi, int type, u_short instance) |
718e3744 | 1798 | { |
718e3744 | 1799 | |
1800 | /* Return if already redistribute flag is set. */ | |
7076bb2f FL |
1801 | if (instance) |
1802 | { | |
1803 | if (redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1804 | return CMD_WARNING; | |
718e3744 | 1805 | |
7076bb2f FL |
1806 | redist_add_instance(&zclient->mi_redist[afi][type], instance); |
1807 | } | |
1808 | else | |
1809 | { | |
6aeb9e78 | 1810 | if (vrf_bitmap_check (zclient->redist[afi][type], bgp->vrf_id)) |
7076bb2f FL |
1811 | return CMD_WARNING; |
1812 | ||
65efcfce LB |
1813 | #if ENABLE_BGP_VNC |
1814 | if (bgp->vrf_id == VRF_DEFAULT && | |
1815 | type == ZEBRA_ROUTE_VNC_DIRECT) { | |
1816 | vnc_export_bgp_enable(bgp, afi); /* only enables if mode bits cfg'd */ | |
1817 | } | |
1818 | #endif | |
1819 | ||
6aeb9e78 | 1820 | vrf_bitmap_set (zclient->redist[afi][type], bgp->vrf_id); |
7076bb2f | 1821 | } |
718e3744 | 1822 | |
ad4cbda1 | 1823 | /* Don't try to register if we're not connected to Zebra or Zebra doesn't |
1824 | * know of this instance. | |
1825 | */ | |
1826 | if (!bgp_install_info_to_zebra (bgp)) | |
718e3744 | 1827 | return CMD_WARNING; |
a39275d7 | 1828 | |
16286195 | 1829 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 1830 | zlog_debug("Tx redistribute add VRF %u afi %d %s %d", |
1831 | bgp->vrf_id, afi, | |
8bb0831e | 1832 | zebra_route_string(type), instance); |
518f0eb1 | 1833 | |
718e3744 | 1834 | /* Send distribute add message to zebra. */ |
7076bb2f | 1835 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, |
6aeb9e78 | 1836 | instance, bgp->vrf_id); |
718e3744 | 1837 | |
1838 | return CMD_SUCCESS; | |
1839 | } | |
1840 | ||
518f0eb1 | 1841 | int |
7c8ff89e | 1842 | bgp_redistribute_resend (struct bgp *bgp, afi_t afi, int type, u_short instance) |
518f0eb1 | 1843 | { |
ad4cbda1 | 1844 | /* Don't try to send if we're not connected to Zebra or Zebra doesn't |
1845 | * know of this instance. | |
1846 | */ | |
1847 | if (!bgp_install_info_to_zebra (bgp)) | |
518f0eb1 DS |
1848 | return -1; |
1849 | ||
16286195 | 1850 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 1851 | zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d", |
1852 | bgp->vrf_id, afi, | |
8bb0831e | 1853 | zebra_route_string(type), instance); |
518f0eb1 DS |
1854 | |
1855 | /* Send distribute add message to zebra. */ | |
7076bb2f | 1856 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, |
9585bba7 | 1857 | instance, bgp->vrf_id); |
7076bb2f | 1858 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, |
9585bba7 | 1859 | instance, bgp->vrf_id); |
518f0eb1 DS |
1860 | |
1861 | return 0; | |
1862 | } | |
1863 | ||
718e3744 | 1864 | /* Redistribute with route-map specification. */ |
1865 | int | |
7c8ff89e | 1866 | bgp_redistribute_rmap_set (struct bgp_redist *red, const char *name) |
718e3744 | 1867 | { |
7c8ff89e DS |
1868 | if (red->rmap.name |
1869 | && (strcmp (red->rmap.name, name) == 0)) | |
718e3744 | 1870 | return 0; |
1871 | ||
7c8ff89e | 1872 | if (red->rmap.name) |
6e919709 DS |
1873 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); |
1874 | red->rmap.name = XSTRDUP(MTYPE_ROUTE_MAP_NAME, name); | |
7c8ff89e | 1875 | red->rmap.map = route_map_lookup_by_name (name); |
718e3744 | 1876 | |
1877 | return 1; | |
1878 | } | |
1879 | ||
1880 | /* Redistribute with metric specification. */ | |
1881 | int | |
caf958b4 DS |
1882 | bgp_redistribute_metric_set (struct bgp *bgp, struct bgp_redist *red, afi_t afi, |
1883 | int type, u_int32_t metric) | |
718e3744 | 1884 | { |
caf958b4 DS |
1885 | struct bgp_node *rn; |
1886 | struct bgp_info *ri; | |
1887 | ||
7c8ff89e DS |
1888 | if (red->redist_metric_flag |
1889 | && red->redist_metric == metric) | |
718e3744 | 1890 | return 0; |
1891 | ||
7c8ff89e DS |
1892 | red->redist_metric_flag = 1; |
1893 | red->redist_metric = metric; | |
718e3744 | 1894 | |
711093b5 | 1895 | for (rn = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); rn; rn = bgp_route_next(rn)) |
1896 | { | |
1897 | for (ri = rn->info; ri; ri = ri->next) | |
1898 | { | |
1899 | if (ri->sub_type == BGP_ROUTE_REDISTRIBUTE && | |
1900 | ri->type == type && | |
1901 | ri->instance == red->instance) | |
1902 | { | |
1903 | struct attr *old_attr; | |
1904 | struct attr new_attr; | |
1905 | struct attr_extra new_extra; | |
1906 | ||
1907 | new_attr.extra = &new_extra; | |
1908 | bgp_attr_dup (&new_attr, ri->attr); | |
1909 | new_attr.med = red->redist_metric; | |
1910 | old_attr = ri->attr; | |
1911 | ri->attr = bgp_attr_intern (&new_attr); | |
1912 | bgp_attr_unintern (&old_attr); | |
1913 | ||
1914 | bgp_info_set_flag(rn, ri, BGP_INFO_ATTR_CHANGED); | |
1915 | bgp_process(bgp, rn, afi, SAFI_UNICAST); | |
1916 | } | |
1917 | } | |
caf958b4 | 1918 | } |
caf958b4 | 1919 | |
718e3744 | 1920 | return 1; |
1921 | } | |
1922 | ||
1923 | /* Unset redistribution. */ | |
1924 | int | |
6aeb9e78 | 1925 | bgp_redistribute_unreg (struct bgp *bgp, afi_t afi, int type, u_short instance) |
718e3744 | 1926 | { |
7c8ff89e DS |
1927 | struct bgp_redist *red; |
1928 | ||
1929 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1930 | if (!red) | |
1931 | return CMD_SUCCESS; | |
718e3744 | 1932 | |
718e3744 | 1933 | /* Return if zebra connection is disabled. */ |
7076bb2f FL |
1934 | if (instance) |
1935 | { | |
1936 | if (!redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1937 | return CMD_WARNING; | |
1938 | redist_del_instance(&zclient->mi_redist[afi][type], instance); | |
1939 | } | |
1940 | else | |
1941 | { | |
6aeb9e78 | 1942 | if (! vrf_bitmap_check (zclient->redist[afi][type], bgp->vrf_id)) |
7076bb2f | 1943 | return CMD_WARNING; |
6aeb9e78 | 1944 | vrf_bitmap_unset (zclient->redist[afi][type], bgp->vrf_id); |
7076bb2f | 1945 | } |
718e3744 | 1946 | |
65efcfce LB |
1947 | #if ENABLE_BGP_VNC |
1948 | if (bgp->vrf_id == VRF_DEFAULT && | |
1949 | type == ZEBRA_ROUTE_VNC_DIRECT) { | |
1950 | vnc_export_bgp_disable(bgp, afi); | |
1951 | } | |
1952 | #endif | |
1953 | ||
ad4cbda1 | 1954 | if (bgp_install_info_to_zebra (bgp)) |
a39275d7 AS |
1955 | { |
1956 | /* Send distribute delete message to zebra. */ | |
16286195 | 1957 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 1958 | zlog_debug("Tx redistribute del VRF %u afi %d %s %d", |
1959 | bgp->vrf_id, afi, zebra_route_string(type), instance); | |
7076bb2f | 1960 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, instance, |
6aeb9e78 | 1961 | bgp->vrf_id); |
a39275d7 | 1962 | } |
718e3744 | 1963 | |
1964 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
7c8ff89e | 1965 | bgp_redistribute_withdraw (bgp, afi, type, instance); |
718e3744 | 1966 | |
1967 | return CMD_SUCCESS; | |
1968 | } | |
1969 | ||
6aeb9e78 DS |
1970 | /* Unset redistribution. */ |
1971 | int | |
1972 | bgp_redistribute_unset (struct bgp *bgp, afi_t afi, int type, u_short instance) | |
1973 | { | |
1974 | struct bgp_redist *red; | |
1975 | ||
1976 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1977 | if (!red) | |
1978 | return CMD_SUCCESS; | |
1979 | ||
1980 | bgp_redistribute_unreg(bgp, afi, type, instance); | |
1981 | ||
1982 | /* Unset route-map. */ | |
1983 | if (red->rmap.name) | |
1984 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); | |
1985 | red->rmap.name = NULL; | |
1986 | red->rmap.map = NULL; | |
1987 | ||
1988 | /* Unset metric. */ | |
1989 | red->redist_metric_flag = 0; | |
1990 | red->redist_metric = 0; | |
1991 | ||
1992 | bgp_redist_del(bgp, afi, type, instance); | |
1993 | ||
1994 | return CMD_SUCCESS; | |
1995 | } | |
1996 | ||
eb117f29 SK |
1997 | /* Update redistribute vrf bitmap during triggers like |
1998 | restart networking or delete/add VRFs */ | |
1999 | void | |
2000 | bgp_update_redist_vrf_bitmaps (struct bgp *bgp, vrf_id_t old_vrf_id) | |
2001 | { | |
2002 | int i; | |
2003 | afi_t afi; | |
2004 | ||
2005 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
2006 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
2007 | if (vrf_bitmap_check (zclient->redist[afi][i], old_vrf_id)) | |
2008 | { | |
2009 | vrf_bitmap_unset (zclient->redist[afi][i], old_vrf_id); | |
2010 | vrf_bitmap_set (zclient->redist[afi][i], bgp->vrf_id); | |
2011 | } | |
2012 | return; | |
2013 | } | |
2014 | ||
718e3744 | 2015 | void |
94f2b392 | 2016 | bgp_zclient_reset (void) |
718e3744 | 2017 | { |
2018 | zclient_reset (zclient); | |
2019 | } | |
2020 | ||
ad4cbda1 | 2021 | /* Register this instance with Zebra. Invoked upon connect (for |
2022 | * default instance) and when other VRFs are learnt (or created and | |
2023 | * already learnt). | |
2024 | */ | |
2025 | void | |
2026 | bgp_zebra_instance_register (struct bgp *bgp) | |
2027 | { | |
2028 | /* Don't try to register if we're not connected to Zebra */ | |
4c2620da | 2029 | if (!zclient || zclient->sock < 0) |
ad4cbda1 | 2030 | return; |
2031 | ||
2032 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2033 | zlog_debug("Registering VRF %u", bgp->vrf_id); | |
2034 | ||
2035 | /* Register for router-id, interfaces, redistributed routes. */ | |
2036 | zclient_send_reg_requests (zclient, bgp->vrf_id); | |
2037 | } | |
2038 | ||
2039 | /* Deregister this instance with Zebra. Invoked upon the instance | |
2040 | * being deleted (default or VRF) and it is already registered. | |
2041 | */ | |
2042 | void | |
2043 | bgp_zebra_instance_deregister (struct bgp *bgp) | |
2044 | { | |
2045 | /* Don't try to deregister if we're not connected to Zebra */ | |
2046 | if (zclient->sock < 0) | |
2047 | return; | |
2048 | ||
2049 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2050 | zlog_debug("Deregistering VRF %u", bgp->vrf_id); | |
2051 | ||
2052 | /* Deregister for router-id, interfaces, redistributed routes. */ | |
2053 | zclient_send_dereg_requests (zclient, bgp->vrf_id); | |
2054 | } | |
2055 | ||
4a04e5f7 | 2056 | void |
2057 | bgp_zebra_initiate_radv (struct bgp *bgp, struct peer *peer) | |
2058 | { | |
5c81b96a | 2059 | int ra_interval = BGP_UNNUM_DEFAULT_RA_INTERVAL; |
2060 | ||
4a04e5f7 | 2061 | /* Don't try to initiate if we're not connected to Zebra */ |
2062 | if (zclient->sock < 0) | |
2063 | return; | |
2064 | ||
2065 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2066 | zlog_debug("%u: Initiating RA for peer %s", bgp->vrf_id, peer->host); | |
2067 | ||
5c81b96a | 2068 | zclient_send_interface_radv_req (zclient, bgp->vrf_id, peer->ifp, 1, ra_interval); |
4a04e5f7 | 2069 | } |
2070 | ||
2071 | void | |
2072 | bgp_zebra_terminate_radv (struct bgp *bgp, struct peer *peer) | |
2073 | { | |
2074 | /* Don't try to terminate if we're not connected to Zebra */ | |
2075 | if (zclient->sock < 0) | |
2076 | return; | |
2077 | ||
2078 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2079 | zlog_debug("%u: Terminating RA for peer %s", bgp->vrf_id, peer->host); | |
2080 | ||
5c81b96a | 2081 | zclient_send_interface_radv_req (zclient, bgp->vrf_id, peer->ifp, 0, 0); |
4a04e5f7 | 2082 | } |
2083 | ||
ad4cbda1 | 2084 | /* BGP has established connection with Zebra. */ |
7076bb2f FL |
2085 | static void |
2086 | bgp_zebra_connected (struct zclient *zclient) | |
2087 | { | |
6aeb9e78 | 2088 | struct bgp *bgp; |
7076bb2f | 2089 | |
ad4cbda1 | 2090 | /* At this point, we may or may not have BGP instances configured, but |
2091 | * we're only interested in the default VRF (others wouldn't have learnt | |
2092 | * the VRF from Zebra yet.) | |
2093 | */ | |
2094 | bgp = bgp_get_default(); | |
2095 | if (!bgp) | |
2096 | return; | |
2097 | ||
2098 | bgp_zebra_instance_register (bgp); | |
2099 | ||
2376c3f2 | 2100 | /* Send the client registration */ |
2101 | bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER); | |
2102 | ||
ad4cbda1 | 2103 | /* TODO - What if we have peers and networks configured, do we have to |
2104 | * kick-start them? | |
2105 | */ | |
7076bb2f FL |
2106 | } |
2107 | ||
6aeb9e78 | 2108 | |
718e3744 | 2109 | void |
4140ca4d | 2110 | bgp_zebra_init (struct thread_master *master) |
718e3744 | 2111 | { |
2112 | /* Set default values. */ | |
4140ca4d | 2113 | zclient = zclient_new (master); |
7c8ff89e | 2114 | zclient_init (zclient, ZEBRA_ROUTE_BGP, 0); |
7076bb2f | 2115 | zclient->zebra_connected = bgp_zebra_connected; |
18a6dce6 | 2116 | zclient->router_id_update = bgp_router_id_update; |
718e3744 | 2117 | zclient->interface_add = bgp_interface_add; |
2118 | zclient->interface_delete = bgp_interface_delete; | |
2119 | zclient->interface_address_add = bgp_interface_address_add; | |
2120 | zclient->interface_address_delete = bgp_interface_address_delete; | |
a80beece DS |
2121 | zclient->interface_nbr_address_add = bgp_interface_nbr_address_add; |
2122 | zclient->interface_nbr_address_delete = bgp_interface_nbr_address_delete; | |
bfcd43b2 | 2123 | zclient->interface_vrf_update = bgp_interface_vrf_update; |
5048fe14 | 2124 | zclient->redistribute_route_ipv4_add = zebra_read_ipv4; |
2125 | zclient->redistribute_route_ipv4_del = zebra_read_ipv4; | |
718e3744 | 2126 | zclient->interface_up = bgp_interface_up; |
2127 | zclient->interface_down = bgp_interface_down; | |
5048fe14 | 2128 | zclient->redistribute_route_ipv6_add = zebra_read_ipv6; |
2129 | zclient->redistribute_route_ipv6_del = zebra_read_ipv6; | |
fb018d25 | 2130 | zclient->nexthop_update = bgp_read_nexthop_update; |
078430f6 | 2131 | zclient->import_check_update = bgp_read_import_check_update; |
718e3744 | 2132 | |
8196f13d | 2133 | bgp_nexthop_buf = stream_new(BGP_NEXTHOP_BUF_SIZE); |
431aa9f9 | 2134 | bgp_ifindices_buf = stream_new(BGP_IFINDICES_BUF_SIZE); |
718e3744 | 2135 | } |
bb86c601 LB |
2136 | |
2137 | void | |
2138 | bgp_zebra_destroy(void) | |
2139 | { | |
2140 | if (zclient == NULL) | |
2141 | return; | |
2142 | zclient_stop(zclient); | |
2143 | zclient_free(zclient); | |
2144 | zclient = NULL; | |
2145 | } |