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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" |
718e3744 | 36 | |
37 | #include "bgpd/bgpd.h" | |
38 | #include "bgpd/bgp_route.h" | |
39 | #include "bgpd/bgp_attr.h" | |
40 | #include "bgpd/bgp_nexthop.h" | |
41 | #include "bgpd/bgp_zebra.h" | |
42 | #include "bgpd/bgp_fsm.h" | |
a39275d7 | 43 | #include "bgpd/bgp_debug.h" |
8196f13d | 44 | #include "bgpd/bgp_mpath.h" |
fb018d25 | 45 | #include "bgpd/bgp_nexthop.h" |
ffd0c037 | 46 | #include "bgpd/bgp_nht.h" |
6b0655a2 | 47 | |
718e3744 | 48 | /* All information about zebra. */ |
228da428 | 49 | struct zclient *zclient = NULL; |
718e3744 | 50 | |
8196f13d JB |
51 | /* Growable buffer for nexthops sent to zebra */ |
52 | struct stream *bgp_nexthop_buf = NULL; | |
431aa9f9 | 53 | struct stream *bgp_ifindices_buf = NULL; |
8196f13d | 54 | |
73ac8160 DS |
55 | /* These array buffers are used in making a copy of the attributes for |
56 | route-map apply. Arrays are being used here to minimize mallocs and | |
57 | frees for the temporary copy of the attributes. | |
58 | Given the zapi api expects the nexthop buffer to contain pointer to | |
59 | pointers for nexthops, we couldnt have used a single nexthop variable | |
60 | on the stack, hence we had two options: | |
61 | 1. maintain a linked-list and free it after zapi_*_route call | |
62 | 2. use an array to avoid number of mallocs. | |
63 | Number of supported next-hops are finite, use of arrays should be ok. */ | |
5b964da3 DS |
64 | struct attr attr_cp[MULTIPATH_NUM]; |
65 | struct attr_extra attr_extra_cp[MULTIPATH_NUM]; | |
73ac8160 DS |
66 | int attr_index = 0; |
67 | ||
68 | /* Once per address-family initialization of the attribute array */ | |
69 | #define BGP_INFO_ATTR_BUF_INIT()\ | |
70 | do {\ | |
5b964da3 DS |
71 | memset(attr_cp, 0, MULTIPATH_NUM * sizeof(struct attr));\ |
72 | memset(attr_extra_cp, 0, MULTIPATH_NUM * sizeof(struct attr_extra));\ | |
73ac8160 DS |
73 | attr_index = 0;\ |
74 | } while (0) | |
75 | ||
76 | #define BGP_INFO_ATTR_BUF_COPY(info_src, info_dst)\ | |
77 | do { \ | |
78 | *info_dst = *info_src; \ | |
5b964da3 | 79 | assert(attr_index != MULTIPATH_NUM);\ |
73ac8160 DS |
80 | attr_cp[attr_index].extra = &attr_extra_cp[attr_index]; \ |
81 | bgp_attr_dup (&attr_cp[attr_index], info_src->attr); \ | |
82 | bgp_attr_deep_dup (&attr_cp[attr_index], info_src->attr); \ | |
83 | info_dst->attr = &attr_cp[attr_index]; \ | |
84 | attr_index++;\ | |
85 | } while (0) | |
86 | ||
87 | #define BGP_INFO_ATTR_BUF_FREE(info) \ | |
88 | do { \ | |
89 | bgp_attr_deep_free(info->attr); \ | |
90 | } while (0) | |
91 | ||
ad4cbda1 | 92 | |
93 | /* Can we install into zebra? */ | |
94 | static inline int | |
95 | bgp_install_info_to_zebra (struct bgp *bgp) | |
96 | { | |
97 | if (zclient->sock <= 0) | |
98 | return 0; | |
99 | ||
100 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
101 | return 0; | |
102 | ||
103 | return 1; | |
104 | } | |
105 | ||
18a6dce6 | 106 | /* Router-id update message from zebra. */ |
94f2b392 | 107 | static int |
7076bb2f FL |
108 | bgp_router_id_update (int command, struct zclient *zclient, zebra_size_t length, |
109 | vrf_id_t vrf_id) | |
718e3744 | 110 | { |
18a6dce6 | 111 | struct prefix router_id; |
1eb8ef25 | 112 | struct listnode *node, *nnode; |
18a6dce6 | 113 | struct bgp *bgp; |
718e3744 | 114 | |
18a6dce6 | 115 | zebra_router_id_update_read(zclient->ibuf,&router_id); |
a39275d7 | 116 | |
16286195 | 117 | if (BGP_DEBUG (zebra, ZEBRA)) |
a39275d7 | 118 | { |
4690c7d7 | 119 | char buf[PREFIX2STR_BUFFER]; |
a39275d7 | 120 | prefix2str(&router_id, buf, sizeof(buf)); |
ad4cbda1 | 121 | zlog_debug("Rx Router Id update VRF %u Id %s", vrf_id, buf); |
a39275d7 AS |
122 | } |
123 | ||
ad4cbda1 | 124 | if (vrf_id == VRF_DEFAULT) |
6aeb9e78 | 125 | { |
ad4cbda1 | 126 | /* Router-id change for default VRF has to also update all views. */ |
6aeb9e78 DS |
127 | for (ALL_LIST_ELEMENTS (bm->bgp, node, nnode, bgp)) |
128 | { | |
ad4cbda1 | 129 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) |
6aeb9e78 | 130 | continue; |
718e3744 | 131 | |
6aeb9e78 DS |
132 | bgp->router_id_zebra = router_id.u.prefix4; |
133 | ||
134 | if (!bgp->router_id_static.s_addr) | |
135 | bgp_router_id_set (bgp, &router_id.u.prefix4); | |
136 | } | |
137 | } | |
138 | else | |
718e3744 | 139 | { |
6aeb9e78 DS |
140 | bgp = bgp_lookup_by_vrf_id (vrf_id); |
141 | if (bgp) | |
142 | { | |
143 | bgp->router_id_zebra = router_id.u.prefix4; | |
144 | ||
145 | if (!bgp->router_id_static.s_addr) | |
146 | bgp_router_id_set (bgp, &router_id.u.prefix4); | |
147 | } | |
718e3744 | 148 | } |
18a6dce6 | 149 | |
718e3744 | 150 | return 0; |
151 | } | |
152 | ||
fb018d25 DS |
153 | /* Nexthop update message from zebra. */ |
154 | static int | |
155 | bgp_read_nexthop_update (int command, struct zclient *zclient, | |
7076bb2f | 156 | zebra_size_t length, vrf_id_t vrf_id) |
fb018d25 | 157 | { |
7076bb2f | 158 | bgp_parse_nexthop_update(command, vrf_id); |
078430f6 DS |
159 | return 0; |
160 | } | |
161 | ||
162 | static int | |
163 | bgp_read_import_check_update(int command, struct zclient *zclient, | |
7076bb2f | 164 | zebra_size_t length, vrf_id_t vrf_id) |
078430f6 | 165 | { |
7076bb2f | 166 | bgp_parse_nexthop_update(command, vrf_id); |
fb018d25 DS |
167 | return 0; |
168 | } | |
169 | ||
4a04e5f7 | 170 | /* Set or clear interface on which unnumbered neighbor is configured. This |
171 | * would in turn cause BGP to initiate or turn off IPv6 RAs on this | |
172 | * interface. | |
173 | */ | |
174 | static void | |
175 | bgp_update_interface_nbrs (struct bgp *bgp, struct interface *ifp, | |
176 | struct interface *upd_ifp) | |
177 | { | |
178 | struct listnode *node, *nnode; | |
179 | struct peer *peer; | |
180 | ||
181 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) | |
182 | { | |
183 | if (peer->conf_if && | |
184 | (strcmp (peer->conf_if, ifp->name) == 0)) | |
185 | { | |
4a04e5f7 | 186 | if (upd_ifp) |
5575a6bb DS |
187 | { |
188 | peer->ifp = upd_ifp; | |
189 | bgp_zebra_initiate_radv (bgp, peer); | |
190 | } | |
4a04e5f7 | 191 | else |
5575a6bb DS |
192 | { |
193 | bgp_zebra_terminate_radv (bgp, peer); | |
194 | peer->ifp = upd_ifp; | |
195 | } | |
4a04e5f7 | 196 | } |
197 | } | |
198 | } | |
199 | ||
a80beece | 200 | static void |
6aeb9e78 | 201 | bgp_start_interface_nbrs (struct bgp *bgp, struct interface *ifp) |
a80beece | 202 | { |
6aeb9e78 | 203 | struct listnode *node, *nnode; |
a80beece DS |
204 | struct peer *peer; |
205 | ||
6aeb9e78 | 206 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
a80beece | 207 | { |
6aeb9e78 DS |
208 | if (peer->conf_if && |
209 | (strcmp (peer->conf_if, ifp->name) == 0) && | |
210 | peer->status != Established) | |
a80beece | 211 | { |
6aeb9e78 DS |
212 | if (peer_active(peer)) |
213 | BGP_EVENT_ADD (peer, BGP_Stop); | |
214 | BGP_EVENT_ADD (peer, BGP_Start); | |
a80beece DS |
215 | } |
216 | } | |
217 | } | |
218 | ||
219 | static void | |
6aeb9e78 | 220 | bgp_nbr_connected_add (struct bgp *bgp, struct nbr_connected *ifc) |
a197c47c DS |
221 | { |
222 | struct listnode *node; | |
223 | struct connected *connected; | |
224 | struct interface *ifp; | |
225 | struct prefix *p; | |
226 | ||
227 | /* Kick-off the FSM for any relevant peers only if there is a | |
228 | * valid local address on the interface. | |
229 | */ | |
230 | ifp = ifc->ifp; | |
231 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, node, connected)) | |
232 | { | |
233 | p = connected->address; | |
234 | if (p->family == AF_INET6 && | |
235 | IN6_IS_ADDR_LINKLOCAL (&p->u.prefix6)) | |
236 | break; | |
237 | } | |
238 | if (!connected) | |
239 | return; | |
240 | ||
6aeb9e78 | 241 | bgp_start_interface_nbrs (bgp, ifp); |
a197c47c DS |
242 | } |
243 | ||
244 | static void | |
6aeb9e78 | 245 | bgp_nbr_connected_delete (struct bgp *bgp, struct nbr_connected *ifc, int del) |
a80beece | 246 | { |
6aeb9e78 | 247 | struct listnode *node, *nnode; |
a80beece | 248 | struct peer *peer; |
a197c47c | 249 | struct interface *ifp; |
a80beece | 250 | |
6aeb9e78 | 251 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
a80beece | 252 | { |
6aeb9e78 | 253 | if (peer->conf_if && (strcmp (peer->conf_if, ifc->ifp->name) == 0)) |
a80beece | 254 | { |
e60480bd | 255 | peer->last_reset = PEER_DOWN_NBR_ADDR_DEL; |
6aeb9e78 | 256 | BGP_EVENT_ADD (peer, BGP_Stop); |
a80beece DS |
257 | } |
258 | } | |
a197c47c DS |
259 | /* Free neighbor also, if we're asked to. */ |
260 | if (del) | |
261 | { | |
262 | ifp = ifc->ifp; | |
263 | listnode_delete (ifp->nbr_connected, ifc); | |
264 | nbr_connected_free (ifc); | |
265 | } | |
a80beece DS |
266 | } |
267 | ||
718e3744 | 268 | /* Inteface addition message from zebra. */ |
94f2b392 | 269 | static int |
7076bb2f FL |
270 | bgp_interface_add (int command, struct zclient *zclient, zebra_size_t length, |
271 | vrf_id_t vrf_id) | |
718e3744 | 272 | { |
273 | struct interface *ifp; | |
4a04e5f7 | 274 | struct bgp *bgp; |
718e3744 | 275 | |
7076bb2f | 276 | ifp = zebra_interface_add_read (zclient->ibuf, vrf_id); |
4a04e5f7 | 277 | if (!ifp) // unexpected |
278 | return 0; | |
718e3744 | 279 | |
16286195 | 280 | if (BGP_DEBUG (zebra, ZEBRA) && ifp) |
ad4cbda1 | 281 | zlog_debug("Rx Intf add VRF %u IF %s", vrf_id, ifp->name); |
a39275d7 | 282 | |
4a04e5f7 | 283 | bgp = bgp_lookup_by_vrf_id (vrf_id); |
284 | if (!bgp) | |
285 | return 0; | |
286 | ||
287 | bgp_update_interface_nbrs (bgp, ifp, ifp); | |
718e3744 | 288 | return 0; |
289 | } | |
290 | ||
94f2b392 | 291 | static int |
718e3744 | 292 | bgp_interface_delete (int command, struct zclient *zclient, |
7076bb2f | 293 | zebra_size_t length, vrf_id_t vrf_id) |
718e3744 | 294 | { |
295 | struct stream *s; | |
296 | struct interface *ifp; | |
4a04e5f7 | 297 | struct bgp *bgp; |
718e3744 | 298 | |
299 | s = zclient->ibuf; | |
7076bb2f | 300 | ifp = zebra_interface_state_read (s, vrf_id); |
4a04e5f7 | 301 | if (!ifp) /* This may happen if we've just unregistered for a VRF. */ |
a4499b83 | 302 | return 0; |
303 | ||
84361d61 | 304 | ifp->ifindex = IFINDEX_DELETED; |
718e3744 | 305 | |
16286195 | 306 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 307 | zlog_debug("Rx Intf del VRF %u IF %s", vrf_id, ifp->name); |
a39275d7 | 308 | |
4a04e5f7 | 309 | bgp = bgp_lookup_by_vrf_id (vrf_id); |
310 | if (!bgp) | |
311 | return 0; | |
312 | ||
313 | bgp_update_interface_nbrs (bgp, ifp, NULL); | |
718e3744 | 314 | return 0; |
315 | } | |
316 | ||
94f2b392 | 317 | static int |
7076bb2f FL |
318 | bgp_interface_up (int command, struct zclient *zclient, zebra_size_t length, |
319 | vrf_id_t vrf_id) | |
718e3744 | 320 | { |
321 | struct stream *s; | |
322 | struct interface *ifp; | |
323 | struct connected *c; | |
a80beece | 324 | struct nbr_connected *nc; |
1eb8ef25 | 325 | struct listnode *node, *nnode; |
6aeb9e78 DS |
326 | struct bgp *bgp; |
327 | ||
718e3744 | 328 | s = zclient->ibuf; |
7076bb2f | 329 | ifp = zebra_interface_state_read (s, vrf_id); |
718e3744 | 330 | |
331 | if (! ifp) | |
332 | return 0; | |
333 | ||
16286195 | 334 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 335 | zlog_debug("Rx Intf up VRF %u IF %s", vrf_id, ifp->name); |
336 | ||
337 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
338 | if (!bgp) | |
339 | return 0; | |
a39275d7 | 340 | |
1eb8ef25 | 341 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) |
6aeb9e78 | 342 | bgp_connected_add (bgp, c); |
718e3744 | 343 | |
a80beece | 344 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) |
6aeb9e78 | 345 | bgp_nbr_connected_add (bgp, nc); |
a80beece | 346 | |
718e3744 | 347 | return 0; |
348 | } | |
349 | ||
94f2b392 | 350 | static int |
7076bb2f FL |
351 | bgp_interface_down (int command, struct zclient *zclient, zebra_size_t length, |
352 | vrf_id_t vrf_id) | |
718e3744 | 353 | { |
354 | struct stream *s; | |
355 | struct interface *ifp; | |
356 | struct connected *c; | |
a80beece | 357 | struct nbr_connected *nc; |
1eb8ef25 | 358 | struct listnode *node, *nnode; |
6aeb9e78 DS |
359 | struct bgp *bgp; |
360 | ||
718e3744 | 361 | s = zclient->ibuf; |
7076bb2f | 362 | ifp = zebra_interface_state_read (s, vrf_id); |
718e3744 | 363 | if (! ifp) |
364 | return 0; | |
365 | ||
16286195 | 366 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 367 | zlog_debug("Rx Intf down VRF %u IF %s", vrf_id, ifp->name); |
368 | ||
369 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
370 | if (!bgp) | |
371 | return 0; | |
a39275d7 | 372 | |
1eb8ef25 | 373 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) |
6aeb9e78 | 374 | bgp_connected_delete (bgp, c); |
718e3744 | 375 | |
a80beece | 376 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) |
6aeb9e78 | 377 | bgp_nbr_connected_delete (bgp, nc, 1); |
a80beece | 378 | |
8da8689d | 379 | /* Fast external-failover */ |
718e3744 | 380 | { |
718e3744 | 381 | struct peer *peer; |
718e3744 | 382 | |
ad4cbda1 | 383 | if (CHECK_FLAG (bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) |
384 | return 0; | |
718e3744 | 385 | |
ad4cbda1 | 386 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
387 | { | |
388 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) | |
389 | continue; | |
718e3744 | 390 | |
ad4cbda1 | 391 | if (ifp == peer->nexthop.ifp) |
e60480bd DD |
392 | { |
393 | BGP_EVENT_ADD (peer, BGP_Stop); | |
394 | peer->last_reset = PEER_DOWN_IF_DOWN; | |
395 | } | |
718e3744 | 396 | } |
397 | } | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
94f2b392 | 402 | static int |
718e3744 | 403 | bgp_interface_address_add (int command, struct zclient *zclient, |
7076bb2f | 404 | zebra_size_t length, vrf_id_t vrf_id) |
718e3744 | 405 | { |
406 | struct connected *ifc; | |
407 | ||
7076bb2f | 408 | ifc = zebra_interface_address_read (command, zclient->ibuf, vrf_id); |
718e3744 | 409 | |
410 | if (ifc == NULL) | |
411 | return 0; | |
412 | ||
16286195 | 413 | if (bgp_debug_zebra(ifc->address)) |
a39275d7 | 414 | { |
4690c7d7 | 415 | char buf[PREFIX2STR_BUFFER]; |
a39275d7 | 416 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 417 | zlog_debug("Rx Intf address add VRF %u IF %s addr %s", |
418 | vrf_id, ifc->ifp->name, buf); | |
a39275d7 AS |
419 | } |
420 | ||
2e3b2e47 | 421 | if (if_is_operative (ifc->ifp)) |
a197c47c | 422 | { |
6aeb9e78 DS |
423 | struct bgp *bgp; |
424 | ||
425 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
426 | if (!bgp) | |
ad4cbda1 | 427 | return 0; |
6aeb9e78 DS |
428 | |
429 | bgp_connected_add (bgp, ifc); | |
a197c47c DS |
430 | /* If we have learnt of any neighbors on this interface, |
431 | * check to kick off any BGP interface-based neighbors, | |
432 | * but only if this is a link-local address. | |
433 | */ | |
434 | if (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6) && | |
435 | !list_isempty(ifc->ifp->nbr_connected)) | |
6aeb9e78 | 436 | bgp_start_interface_nbrs (bgp, ifc->ifp); |
a197c47c | 437 | } |
718e3744 | 438 | |
439 | return 0; | |
440 | } | |
441 | ||
94f2b392 | 442 | static int |
718e3744 | 443 | bgp_interface_address_delete (int command, struct zclient *zclient, |
7076bb2f | 444 | zebra_size_t length, vrf_id_t vrf_id) |
718e3744 | 445 | { |
446 | struct connected *ifc; | |
6aeb9e78 DS |
447 | struct bgp *bgp; |
448 | ||
7076bb2f | 449 | ifc = zebra_interface_address_read (command, zclient->ibuf, vrf_id); |
718e3744 | 450 | |
451 | if (ifc == NULL) | |
452 | return 0; | |
453 | ||
16286195 | 454 | if (bgp_debug_zebra(ifc->address)) |
a39275d7 | 455 | { |
4690c7d7 | 456 | char buf[PREFIX2STR_BUFFER]; |
a39275d7 | 457 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 458 | zlog_debug("Rx Intf address del VRF %u IF %s addr %s", |
459 | vrf_id, ifc->ifp->name, buf); | |
a39275d7 AS |
460 | } |
461 | ||
2e3b2e47 | 462 | if (if_is_operative (ifc->ifp)) |
ad4cbda1 | 463 | { |
464 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
465 | if (bgp) | |
466 | bgp_connected_delete (bgp, ifc); | |
467 | } | |
718e3744 | 468 | |
469 | connected_free (ifc); | |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
a80beece DS |
474 | static int |
475 | bgp_interface_nbr_address_add (int command, struct zclient *zclient, | |
7076bb2f | 476 | zebra_size_t length, vrf_id_t vrf_id) |
a80beece DS |
477 | { |
478 | struct nbr_connected *ifc = NULL; | |
6aeb9e78 DS |
479 | struct bgp *bgp; |
480 | ||
7076bb2f | 481 | ifc = zebra_interface_nbr_address_read (command, zclient->ibuf, vrf_id); |
a80beece DS |
482 | |
483 | if (ifc == NULL) | |
484 | return 0; | |
485 | ||
16286195 | 486 | if (bgp_debug_zebra(ifc->address)) |
a80beece | 487 | { |
4690c7d7 | 488 | char buf[PREFIX2STR_BUFFER]; |
a80beece | 489 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 490 | zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %s", |
491 | vrf_id, ifc->ifp->name, buf); | |
a80beece DS |
492 | } |
493 | ||
494 | if (if_is_operative (ifc->ifp)) | |
ad4cbda1 | 495 | { |
496 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
497 | if (bgp) | |
498 | bgp_nbr_connected_add (bgp, ifc); | |
499 | } | |
a80beece DS |
500 | |
501 | return 0; | |
502 | } | |
503 | ||
504 | static int | |
505 | bgp_interface_nbr_address_delete (int command, struct zclient *zclient, | |
7076bb2f | 506 | zebra_size_t length, vrf_id_t vrf_id) |
a80beece DS |
507 | { |
508 | struct nbr_connected *ifc = NULL; | |
6aeb9e78 DS |
509 | struct bgp *bgp; |
510 | ||
7076bb2f | 511 | ifc = zebra_interface_nbr_address_read (command, zclient->ibuf, vrf_id); |
a80beece DS |
512 | |
513 | if (ifc == NULL) | |
514 | return 0; | |
515 | ||
16286195 | 516 | if (bgp_debug_zebra(ifc->address)) |
a80beece | 517 | { |
4690c7d7 | 518 | char buf[PREFIX2STR_BUFFER]; |
a80beece | 519 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 520 | zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %s", |
521 | vrf_id, ifc->ifp->name, buf); | |
a80beece DS |
522 | } |
523 | ||
524 | if (if_is_operative (ifc->ifp)) | |
ad4cbda1 | 525 | { |
526 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
527 | if (bgp) | |
528 | bgp_nbr_connected_delete (bgp, ifc, 0); | |
529 | } | |
a80beece DS |
530 | |
531 | nbr_connected_free (ifc); | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
bfcd43b2 | 536 | /* VRF update for an interface. */ |
537 | static int | |
538 | bgp_interface_vrf_update (int command, struct zclient *zclient, zebra_size_t length, | |
539 | vrf_id_t vrf_id) | |
540 | { | |
541 | struct interface *ifp; | |
542 | vrf_id_t new_vrf_id; | |
543 | struct connected *c; | |
544 | struct nbr_connected *nc; | |
545 | struct listnode *node, *nnode; | |
546 | struct bgp *bgp; | |
547 | ||
548 | ifp = zebra_interface_vrf_update_read (zclient->ibuf, vrf_id, &new_vrf_id); | |
549 | if (! ifp) | |
550 | return 0; | |
551 | ||
552 | if (BGP_DEBUG (zebra, ZEBRA) && ifp) | |
553 | zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", | |
554 | vrf_id, ifp->name, new_vrf_id); | |
555 | ||
556 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
557 | if (!bgp) | |
558 | return 0; | |
559 | ||
560 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) | |
561 | bgp_connected_delete (bgp, c); | |
562 | ||
563 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) | |
564 | bgp_nbr_connected_delete (bgp, nc, 1); | |
565 | ||
566 | /* Fast external-failover */ | |
567 | { | |
568 | struct peer *peer; | |
569 | ||
570 | if (CHECK_FLAG (bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) | |
571 | return 0; | |
572 | ||
573 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) | |
574 | { | |
575 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) | |
576 | continue; | |
577 | ||
578 | if (ifp == peer->nexthop.ifp) | |
579 | BGP_EVENT_ADD (peer, BGP_Stop); | |
580 | } | |
581 | } | |
582 | ||
583 | if_update_vrf (ifp, ifp->name, strlen (ifp->name), new_vrf_id); | |
584 | ||
585 | bgp = bgp_lookup_by_vrf_id (new_vrf_id); | |
586 | if (!bgp) | |
587 | return 0; | |
588 | ||
589 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) | |
590 | bgp_connected_add (bgp, c); | |
591 | ||
592 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) | |
593 | bgp_nbr_connected_add (bgp, nc); | |
594 | return 0; | |
595 | } | |
596 | ||
718e3744 | 597 | /* Zebra route add and delete treatment. */ |
94f2b392 | 598 | static int |
7076bb2f FL |
599 | zebra_read_ipv4 (int command, struct zclient *zclient, zebra_size_t length, |
600 | vrf_id_t vrf_id) | |
718e3744 | 601 | { |
602 | struct stream *s; | |
603 | struct zapi_ipv4 api; | |
718e3744 | 604 | struct in_addr nexthop; |
605 | struct prefix_ipv4 p; | |
bc413143 | 606 | unsigned int ifindex; |
d289687f | 607 | int i; |
6aeb9e78 DS |
608 | struct bgp *bgp; |
609 | ||
610 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
611 | if (!bgp) | |
612 | return 0; | |
718e3744 | 613 | |
614 | s = zclient->ibuf; | |
718e3744 | 615 | nexthop.s_addr = 0; |
616 | ||
617 | /* Type, flags, message. */ | |
618 | api.type = stream_getc (s); | |
7c8ff89e | 619 | api.instance = stream_getw (s); |
718e3744 | 620 | api.flags = stream_getc (s); |
621 | api.message = stream_getc (s); | |
622 | ||
623 | /* IPv4 prefix. */ | |
624 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
625 | p.family = AF_INET; | |
626 | p.prefixlen = stream_getc (s); | |
627 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); | |
628 | ||
629 | /* Nexthop, ifindex, distance, metric. */ | |
630 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
631 | { | |
632 | api.nexthop_num = stream_getc (s); | |
633 | nexthop.s_addr = stream_get_ipv4 (s); | |
634 | } | |
0d9551dc | 635 | |
718e3744 | 636 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) |
637 | { | |
638 | api.ifindex_num = stream_getc (s); | |
bc413143 | 639 | ifindex = stream_getl (s); /* ifindex, unused */ |
718e3744 | 640 | } |
ffd0c037 DS |
641 | else |
642 | { | |
643 | ifindex = 0; | |
644 | } | |
0d9551dc | 645 | |
718e3744 | 646 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) |
647 | api.distance = stream_getc (s); | |
0d9551dc | 648 | |
718e3744 | 649 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) |
650 | api.metric = stream_getl (s); | |
651 | else | |
652 | api.metric = 0; | |
653 | ||
0d9551dc DS |
654 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG)) |
655 | api.tag = stream_getw (s); | |
656 | else | |
657 | api.tag = 0; | |
658 | ||
5048fe14 | 659 | if (command == ZEBRA_REDISTRIBUTE_IPV4_ADD) |
a39275d7 | 660 | { |
ffd0c037 | 661 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 AS |
662 | { |
663 | char buf[2][INET_ADDRSTRLEN]; | |
ad4cbda1 | 664 | zlog_debug("Rx IPv4 route add VRF %u %s[%d] %s/%d nexthop %s metric %u tag %d", |
665 | vrf_id, | |
7c8ff89e | 666 | zebra_route_string(api.type), api.instance, |
a39275d7 AS |
667 | inet_ntop(AF_INET, &p.prefix, buf[0], sizeof(buf[0])), |
668 | p.prefixlen, | |
669 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
670 | api.metric, |
671 | api.tag); | |
a39275d7 | 672 | } |
d289687f | 673 | |
674 | /* | |
675 | * The ADD message is actually an UPDATE and there is no explicit DEL | |
676 | * for a prior redistributed route, if any. So, perform an implicit | |
677 | * DEL processing for the same redistributed route from any other | |
678 | * source type. | |
679 | */ | |
680 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
681 | { | |
682 | if (i != api.type) | |
6aeb9e78 | 683 | bgp_redistribute_delete(bgp, (struct prefix *)&p, i, api.instance); |
d289687f | 684 | } |
685 | ||
686 | /* Now perform the add/update. */ | |
6aeb9e78 | 687 | bgp_redistribute_add(bgp, (struct prefix *)&p, &nexthop, NULL, ifindex, |
7c8ff89e | 688 | api.metric, api.type, api.instance, api.tag); |
a39275d7 | 689 | } |
5048fe14 | 690 | else if (command == ZEBRA_REDISTRIBUTE_IPV4_DEL) |
a39275d7 | 691 | { |
ffd0c037 | 692 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 AS |
693 | { |
694 | char buf[2][INET_ADDRSTRLEN]; | |
ad4cbda1 | 695 | zlog_debug("Rx IPv4 route delete VRF %u %s[%d] %s/%d " |
0d9551dc | 696 | "nexthop %s metric %u tag %d", |
ad4cbda1 | 697 | vrf_id, |
7c8ff89e | 698 | zebra_route_string(api.type), api.instance, |
a39275d7 AS |
699 | inet_ntop(AF_INET, &p.prefix, buf[0], sizeof(buf[0])), |
700 | p.prefixlen, | |
701 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
702 | api.metric, |
703 | api.tag); | |
a39275d7 | 704 | } |
6aeb9e78 | 705 | bgp_redistribute_delete(bgp, (struct prefix *)&p, api.type, api.instance); |
a39275d7 | 706 | } |
718e3744 | 707 | |
708 | return 0; | |
709 | } | |
710 | ||
711 | #ifdef HAVE_IPV6 | |
712 | /* Zebra route add and delete treatment. */ | |
94f2b392 | 713 | static int |
7076bb2f FL |
714 | zebra_read_ipv6 (int command, struct zclient *zclient, zebra_size_t length, |
715 | vrf_id_t vrf_id) | |
718e3744 | 716 | { |
717 | struct stream *s; | |
718 | struct zapi_ipv6 api; | |
718e3744 | 719 | struct in6_addr nexthop; |
720 | struct prefix_ipv6 p; | |
bc413143 | 721 | unsigned int ifindex; |
d289687f | 722 | int i; |
6aeb9e78 DS |
723 | struct bgp *bgp; |
724 | ||
725 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
726 | if (!bgp) | |
727 | return 0; | |
718e3744 | 728 | |
729 | s = zclient->ibuf; | |
718e3744 | 730 | memset (&nexthop, 0, sizeof (struct in6_addr)); |
731 | ||
732 | /* Type, flags, message. */ | |
733 | api.type = stream_getc (s); | |
7c8ff89e | 734 | api.instance = stream_getw (s); |
718e3744 | 735 | api.flags = stream_getc (s); |
736 | api.message = stream_getc (s); | |
737 | ||
738 | /* IPv6 prefix. */ | |
739 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
740 | p.family = AF_INET6; | |
741 | p.prefixlen = stream_getc (s); | |
742 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); | |
743 | ||
744 | /* Nexthop, ifindex, distance, metric. */ | |
745 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
746 | { | |
747 | api.nexthop_num = stream_getc (s); | |
748 | stream_get (&nexthop, s, 16); | |
749 | } | |
0d9551dc | 750 | |
718e3744 | 751 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) |
752 | { | |
753 | api.ifindex_num = stream_getc (s); | |
bc413143 | 754 | ifindex = stream_getl (s); /* ifindex, unused */ |
718e3744 | 755 | } |
ffd0c037 DS |
756 | else |
757 | { | |
758 | ifindex = 0; | |
759 | } | |
0d9551dc | 760 | |
718e3744 | 761 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) |
762 | api.distance = stream_getc (s); | |
763 | else | |
764 | api.distance = 0; | |
0d9551dc | 765 | |
718e3744 | 766 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) |
767 | api.metric = stream_getl (s); | |
768 | else | |
769 | api.metric = 0; | |
770 | ||
0d9551dc DS |
771 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG)) |
772 | api.tag = stream_getw (s); | |
773 | else | |
774 | api.tag = 0; | |
775 | ||
718e3744 | 776 | /* Simply ignore link-local address. */ |
777 | if (IN6_IS_ADDR_LINKLOCAL (&p.prefix)) | |
778 | return 0; | |
779 | ||
5048fe14 | 780 | if (command == ZEBRA_REDISTRIBUTE_IPV6_ADD) |
a39275d7 | 781 | { |
ffd0c037 | 782 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 | 783 | { |
f04a80a5 | 784 | char buf[2][INET6_ADDRSTRLEN]; |
ad4cbda1 | 785 | zlog_debug("Rx IPv6 route add VRF %u %s[%d] %s/%d nexthop %s metric %u tag %d", |
786 | vrf_id, | |
7c8ff89e | 787 | zebra_route_string(api.type), api.instance, |
f04a80a5 SH |
788 | inet_ntop(AF_INET6, &p.prefix, buf[0], sizeof(buf[0])), |
789 | p.prefixlen, | |
790 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
791 | api.metric, |
792 | api.tag); | |
a39275d7 | 793 | } |
d289687f | 794 | |
795 | /* | |
796 | * The ADD message is actually an UPDATE and there is no explicit DEL | |
797 | * for a prior redistributed route, if any. So, perform an implicit | |
798 | * DEL processing for the same redistributed route from any other | |
799 | * source type. | |
800 | */ | |
801 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
802 | { | |
803 | if (i != api.type) | |
6aeb9e78 | 804 | bgp_redistribute_delete(bgp, (struct prefix *)&p, i, api.instance); |
d289687f | 805 | } |
806 | ||
6aeb9e78 | 807 | bgp_redistribute_add (bgp, (struct prefix *)&p, NULL, &nexthop, ifindex, |
7c8ff89e | 808 | api.metric, api.type, api.instance, api.tag); |
a39275d7 | 809 | } |
5048fe14 | 810 | else if (command == ZEBRA_REDISTRIBUTE_IPV6_DEL) |
a39275d7 | 811 | { |
ffd0c037 | 812 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 | 813 | { |
f04a80a5 | 814 | char buf[2][INET6_ADDRSTRLEN]; |
ad4cbda1 | 815 | zlog_debug("Rx IPv6 route delete VRF %u %s[%d] %s/%d " |
0d9551dc | 816 | "nexthop %s metric %u tag %d", |
ad4cbda1 | 817 | vrf_id, |
7c8ff89e | 818 | zebra_route_string(api.type), api.instance, |
f04a80a5 SH |
819 | inet_ntop(AF_INET6, &p.prefix, buf[0], sizeof(buf[0])), |
820 | p.prefixlen, | |
821 | inet_ntop(AF_INET6, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
822 | api.metric, |
823 | api.tag); | |
a39275d7 | 824 | } |
6aeb9e78 | 825 | bgp_redistribute_delete (bgp, (struct prefix *) &p, api.type, api.instance); |
a39275d7 | 826 | } |
718e3744 | 827 | |
828 | return 0; | |
829 | } | |
830 | #endif /* HAVE_IPV6 */ | |
6b0655a2 | 831 | |
718e3744 | 832 | struct interface * |
6aeb9e78 | 833 | if_lookup_by_ipv4 (struct in_addr *addr, vrf_id_t vrf_id) |
718e3744 | 834 | { |
52dc7ee6 | 835 | struct listnode *ifnode; |
836 | struct listnode *cnode; | |
718e3744 | 837 | struct interface *ifp; |
838 | struct connected *connected; | |
839 | struct prefix_ipv4 p; | |
840 | struct prefix *cp; | |
841 | ||
842 | p.family = AF_INET; | |
843 | p.prefix = *addr; | |
844 | p.prefixlen = IPV4_MAX_BITLEN; | |
845 | ||
6aeb9e78 | 846 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 847 | { |
1eb8ef25 | 848 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 849 | { |
718e3744 | 850 | cp = connected->address; |
851 | ||
852 | if (cp->family == AF_INET) | |
853 | if (prefix_match (cp, (struct prefix *)&p)) | |
854 | return ifp; | |
855 | } | |
856 | } | |
857 | return NULL; | |
858 | } | |
859 | ||
860 | struct interface * | |
6aeb9e78 | 861 | if_lookup_by_ipv4_exact (struct in_addr *addr, vrf_id_t vrf_id) |
718e3744 | 862 | { |
52dc7ee6 | 863 | struct listnode *ifnode; |
864 | struct listnode *cnode; | |
718e3744 | 865 | struct interface *ifp; |
866 | struct connected *connected; | |
867 | struct prefix *cp; | |
868 | ||
6aeb9e78 | 869 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 870 | { |
1eb8ef25 | 871 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 872 | { |
718e3744 | 873 | cp = connected->address; |
874 | ||
875 | if (cp->family == AF_INET) | |
876 | if (IPV4_ADDR_SAME (&cp->u.prefix4, addr)) | |
877 | return ifp; | |
878 | } | |
879 | } | |
880 | return NULL; | |
881 | } | |
882 | ||
883 | #ifdef HAVE_IPV6 | |
884 | struct interface * | |
6aeb9e78 | 885 | if_lookup_by_ipv6 (struct in6_addr *addr, unsigned int ifindex, vrf_id_t vrf_id) |
718e3744 | 886 | { |
52dc7ee6 | 887 | struct listnode *ifnode; |
888 | struct listnode *cnode; | |
718e3744 | 889 | struct interface *ifp; |
890 | struct connected *connected; | |
891 | struct prefix_ipv6 p; | |
892 | struct prefix *cp; | |
893 | ||
894 | p.family = AF_INET6; | |
895 | p.prefix = *addr; | |
896 | p.prefixlen = IPV6_MAX_BITLEN; | |
897 | ||
6aeb9e78 | 898 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 899 | { |
1eb8ef25 | 900 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 901 | { |
718e3744 | 902 | cp = connected->address; |
903 | ||
904 | if (cp->family == AF_INET6) | |
905 | if (prefix_match (cp, (struct prefix *)&p)) | |
f2345335 | 906 | { |
ffd0c037 | 907 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6.s6_addr32[0])) |
f2345335 DS |
908 | { |
909 | if (ifindex == ifp->ifindex) | |
910 | return ifp; | |
911 | } | |
912 | else | |
913 | return ifp; | |
914 | } | |
718e3744 | 915 | } |
916 | } | |
917 | return NULL; | |
918 | } | |
919 | ||
920 | struct interface * | |
6aeb9e78 | 921 | if_lookup_by_ipv6_exact (struct in6_addr *addr, unsigned int ifindex, vrf_id_t vrf_id) |
718e3744 | 922 | { |
52dc7ee6 | 923 | struct listnode *ifnode; |
924 | struct listnode *cnode; | |
718e3744 | 925 | struct interface *ifp; |
926 | struct connected *connected; | |
927 | struct prefix *cp; | |
928 | ||
6aeb9e78 | 929 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 930 | { |
1eb8ef25 | 931 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 932 | { |
718e3744 | 933 | cp = connected->address; |
934 | ||
935 | if (cp->family == AF_INET6) | |
936 | if (IPV6_ADDR_SAME (&cp->u.prefix6, addr)) | |
f2345335 DS |
937 | { |
938 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) | |
939 | { | |
940 | if (ifindex == ifp->ifindex) | |
941 | return ifp; | |
942 | } | |
943 | else | |
944 | return ifp; | |
945 | } | |
718e3744 | 946 | } |
947 | } | |
948 | return NULL; | |
949 | } | |
950 | ||
94f2b392 | 951 | static int |
718e3744 | 952 | if_get_ipv6_global (struct interface *ifp, struct in6_addr *addr) |
953 | { | |
52dc7ee6 | 954 | struct listnode *cnode; |
718e3744 | 955 | struct connected *connected; |
956 | struct prefix *cp; | |
957 | ||
1eb8ef25 | 958 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 959 | { |
718e3744 | 960 | cp = connected->address; |
961 | ||
962 | if (cp->family == AF_INET6) | |
963 | if (! IN6_IS_ADDR_LINKLOCAL (&cp->u.prefix6)) | |
964 | { | |
965 | memcpy (addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
966 | return 1; | |
967 | } | |
968 | } | |
969 | return 0; | |
970 | } | |
971 | ||
94f2b392 | 972 | static int |
718e3744 | 973 | if_get_ipv6_local (struct interface *ifp, struct in6_addr *addr) |
974 | { | |
52dc7ee6 | 975 | struct listnode *cnode; |
718e3744 | 976 | struct connected *connected; |
977 | struct prefix *cp; | |
978 | ||
1eb8ef25 | 979 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 980 | { |
718e3744 | 981 | cp = connected->address; |
982 | ||
983 | if (cp->family == AF_INET6) | |
984 | if (IN6_IS_ADDR_LINKLOCAL (&cp->u.prefix6)) | |
985 | { | |
986 | memcpy (addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
987 | return 1; | |
988 | } | |
989 | } | |
990 | return 0; | |
991 | } | |
992 | #endif /* HAVE_IPV6 */ | |
993 | ||
6ee06fa9 PM |
994 | static int |
995 | if_get_ipv4_address (struct interface *ifp, struct in_addr *addr) | |
996 | { | |
997 | struct listnode *cnode; | |
998 | struct connected *connected; | |
999 | struct prefix *cp; | |
1000 | ||
1001 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) | |
1002 | { | |
1003 | cp = connected->address; | |
1004 | if ((cp->family == AF_INET) && !ipv4_martian(&(cp->u.prefix4))) | |
1005 | { | |
1006 | *addr = cp->u.prefix4; | |
1007 | return 1; | |
1008 | } | |
1009 | } | |
1010 | return 0; | |
1011 | } | |
1012 | ||
718e3744 | 1013 | int |
1014 | bgp_nexthop_set (union sockunion *local, union sockunion *remote, | |
1015 | struct bgp_nexthop *nexthop, struct peer *peer) | |
1016 | { | |
1017 | int ret = 0; | |
1018 | struct interface *ifp = NULL; | |
1019 | ||
1020 | memset (nexthop, 0, sizeof (struct bgp_nexthop)); | |
1021 | ||
1022 | if (!local) | |
1023 | return -1; | |
1024 | if (!remote) | |
1025 | return -1; | |
1026 | ||
1027 | if (local->sa.sa_family == AF_INET) | |
1028 | { | |
1029 | nexthop->v4 = local->sin.sin_addr; | |
2fb2f5cf | 1030 | if (peer->update_if) |
6aeb9e78 | 1031 | ifp = if_lookup_by_name_vrf (peer->update_if, peer->bgp->vrf_id); |
2fb2f5cf | 1032 | else |
6aeb9e78 | 1033 | ifp = if_lookup_by_ipv4_exact (&local->sin.sin_addr, peer->bgp->vrf_id); |
718e3744 | 1034 | } |
1035 | #ifdef HAVE_IPV6 | |
1036 | if (local->sa.sa_family == AF_INET6) | |
1037 | { | |
1038 | if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr)) | |
1039 | { | |
a80beece | 1040 | if (peer->conf_if || peer->ifname) |
322e5964 | 1041 | ifp = if_lookup_by_name_vrf (peer->conf_if ? peer->conf_if : peer->ifname, peer->bgp->vrf_id); |
718e3744 | 1042 | } |
2fb2f5cf | 1043 | else if (peer->update_if) |
6aeb9e78 | 1044 | ifp = if_lookup_by_name_vrf (peer->update_if, peer->bgp->vrf_id); |
718e3744 | 1045 | else |
f2345335 | 1046 | ifp = if_lookup_by_ipv6_exact (&local->sin6.sin6_addr, |
6aeb9e78 DS |
1047 | local->sin6.sin6_scope_id, |
1048 | peer->bgp->vrf_id); | |
718e3744 | 1049 | } |
1050 | #endif /* HAVE_IPV6 */ | |
1051 | ||
1052 | if (!ifp) | |
1053 | return -1; | |
1054 | ||
1055 | nexthop->ifp = ifp; | |
1056 | ||
e33a4880 | 1057 | /* IPv4 connection, fetch and store IPv6 local address(es) if any. */ |
718e3744 | 1058 | if (local->sa.sa_family == AF_INET) |
1059 | { | |
1060 | #ifdef HAVE_IPV6 | |
1061 | /* IPv6 nexthop*/ | |
1062 | ret = if_get_ipv6_global (ifp, &nexthop->v6_global); | |
1063 | ||
718e3744 | 1064 | if (!ret) |
003c1ba0 | 1065 | { |
1066 | /* There is no global nexthop. Use link-local address as both the | |
1067 | * global and link-local nexthop. In this scenario, the expectation | |
1068 | * for interop is that the network admin would use a route-map to | |
1069 | * specify the global IPv6 nexthop. | |
1070 | */ | |
1071 | if_get_ipv6_local (ifp, &nexthop->v6_global); | |
1072 | memcpy (&nexthop->v6_local, &nexthop->v6_global, | |
1073 | IPV6_MAX_BYTELEN); | |
1074 | } | |
718e3744 | 1075 | else |
1076 | if_get_ipv6_local (ifp, &nexthop->v6_local); | |
003c1ba0 | 1077 | |
6aeb9e78 | 1078 | if (if_lookup_by_ipv4 (&remote->sin.sin_addr, peer->bgp->vrf_id)) |
003c1ba0 | 1079 | peer->shared_network = 1; |
1080 | else | |
1081 | peer->shared_network = 0; | |
718e3744 | 1082 | #endif /* HAVE_IPV6 */ |
1083 | } | |
1084 | ||
1085 | #ifdef HAVE_IPV6 | |
e33a4880 | 1086 | /* IPv6 connection, fetch and store IPv4 local address if any. */ |
718e3744 | 1087 | if (local->sa.sa_family == AF_INET6) |
1088 | { | |
1089 | struct interface *direct = NULL; | |
1090 | ||
6ee06fa9 PM |
1091 | /* IPv4 nexthop. */ |
1092 | ret = if_get_ipv4_address(ifp, &nexthop->v4); | |
1093 | if (!ret && peer->local_id.s_addr) | |
718e3744 | 1094 | nexthop->v4 = peer->local_id; |
1095 | ||
1096 | /* Global address*/ | |
1097 | if (! IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr)) | |
1098 | { | |
1099 | memcpy (&nexthop->v6_global, &local->sin6.sin6_addr, | |
1100 | IPV6_MAX_BYTELEN); | |
1101 | ||
1102 | /* If directory connected set link-local address. */ | |
f2345335 | 1103 | direct = if_lookup_by_ipv6 (&remote->sin6.sin6_addr, |
6aeb9e78 | 1104 | remote->sin6.sin6_scope_id, peer->bgp->vrf_id); |
718e3744 | 1105 | if (direct) |
1106 | if_get_ipv6_local (ifp, &nexthop->v6_local); | |
1107 | } | |
1108 | else | |
1109 | /* Link-local address. */ | |
1110 | { | |
1111 | ret = if_get_ipv6_global (ifp, &nexthop->v6_global); | |
1112 | ||
1113 | /* If there is no global address. Set link-local address as | |
1114 | global. I know this break RFC specification... */ | |
b2b926d5 DS |
1115 | /* In this scenario, the expectation for interop is that the |
1116 | * network admin would use a route-map to specify the global | |
1117 | * IPv6 nexthop. | |
1118 | */ | |
718e3744 | 1119 | if (!ret) |
1120 | memcpy (&nexthop->v6_global, &local->sin6.sin6_addr, | |
1121 | IPV6_MAX_BYTELEN); | |
b2b926d5 DS |
1122 | /* Always set the link-local address */ |
1123 | memcpy (&nexthop->v6_local, &local->sin6.sin6_addr, | |
1124 | IPV6_MAX_BYTELEN); | |
718e3744 | 1125 | } |
718e3744 | 1126 | |
003c1ba0 | 1127 | if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr) || |
6aeb9e78 DS |
1128 | if_lookup_by_ipv6 (&remote->sin6.sin6_addr, remote->sin6.sin6_scope_id, |
1129 | peer->bgp->vrf_id)) | |
003c1ba0 | 1130 | peer->shared_network = 1; |
1131 | else | |
1132 | peer->shared_network = 0; | |
1133 | } | |
718e3744 | 1134 | |
1135 | /* KAME stack specific treatment. */ | |
1136 | #ifdef KAME | |
1137 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_global) | |
1138 | && IN6_LINKLOCAL_IFINDEX (nexthop->v6_global)) | |
1139 | { | |
1140 | SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_global, 0); | |
1141 | } | |
1142 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_local) | |
1143 | && IN6_LINKLOCAL_IFINDEX (nexthop->v6_local)) | |
1144 | { | |
1145 | SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_local, 0); | |
1146 | } | |
1147 | #endif /* KAME */ | |
1148 | #endif /* HAVE_IPV6 */ | |
e33a4880 | 1149 | |
1150 | /* If we have identified the local interface, there is no error for now. */ | |
1151 | return 0; | |
718e3744 | 1152 | } |
1153 | ||
73ac8160 DS |
1154 | static struct in6_addr * |
1155 | bgp_info_to_ipv6_nexthop (struct bgp_info *info) | |
1156 | { | |
1157 | struct in6_addr *nexthop = NULL; | |
1158 | ||
1159 | /* Only global address nexthop exists. */ | |
801a9bcc | 1160 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL) |
73ac8160 DS |
1161 | nexthop = &info->attr->extra->mp_nexthop_global; |
1162 | ||
1163 | /* If both global and link-local address present. */ | |
801a9bcc | 1164 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
1165 | { |
1166 | /* Workaround for Cisco's nexthop bug. */ | |
1167 | if (IN6_IS_ADDR_UNSPECIFIED (&info->attr->extra->mp_nexthop_global) | |
1168 | && info->peer->su_remote->sa.sa_family == AF_INET6) | |
1169 | nexthop = &info->peer->su_remote->sin6.sin6_addr; | |
1170 | else | |
1171 | nexthop = &info->attr->extra->mp_nexthop_local; | |
1172 | } | |
1173 | ||
1174 | return nexthop; | |
1175 | } | |
1176 | ||
1177 | static int | |
1178 | bgp_table_map_apply (struct route_map *map, struct prefix *p, | |
1179 | struct bgp_info *info) | |
1180 | { | |
1181 | if (route_map_apply(map, p, RMAP_BGP, info) != RMAP_DENYMATCH) | |
1182 | return 1; | |
1183 | ||
16286195 | 1184 | if (bgp_debug_zebra(p)) |
73ac8160 DS |
1185 | { |
1186 | if (p->family == AF_INET) | |
1187 | { | |
1188 | char buf[2][INET_ADDRSTRLEN]; | |
1189 | zlog_debug("Zebra rmap deny: IPv4 route %s/%d nexthop %s", | |
1190 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), | |
1191 | p->prefixlen, | |
1192 | inet_ntop(AF_INET, &info->attr->nexthop, buf[1], | |
1193 | sizeof(buf[1]))); | |
1194 | } | |
1195 | if (p->family == AF_INET6) | |
1196 | { | |
1197 | char buf[2][INET6_ADDRSTRLEN]; | |
1198 | zlog_debug("Zebra rmap deny: IPv6 route %s/%d nexthop %s", | |
1199 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), | |
1200 | p->prefixlen, | |
1201 | inet_ntop(AF_INET6, bgp_info_to_ipv6_nexthop(info), buf[1], | |
1202 | sizeof(buf[1]))); | |
1203 | } | |
1204 | } | |
1205 | return 0; | |
1206 | } | |
1207 | ||
718e3744 | 1208 | void |
73ac8160 DS |
1209 | bgp_zebra_announce (struct prefix *p, struct bgp_info *info, struct bgp *bgp, |
1210 | afi_t afi, safi_t safi) | |
718e3744 | 1211 | { |
1212 | int flags; | |
1213 | u_char distance; | |
1214 | struct peer *peer; | |
8196f13d JB |
1215 | struct bgp_info *mpinfo; |
1216 | size_t oldsize, newsize; | |
73ac8160 DS |
1217 | u_int32_t nhcount, metric; |
1218 | struct bgp_info local_info; | |
1219 | struct bgp_info *info_cp = &local_info; | |
0d9551dc | 1220 | u_short tag; |
718e3744 | 1221 | |
ad4cbda1 | 1222 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't |
1223 | * know of this instance. | |
1224 | */ | |
1225 | if (!bgp_install_info_to_zebra (bgp)) | |
718e3744 | 1226 | return; |
1227 | ||
7076bb2f | 1228 | if ((p->family == AF_INET && |
6aeb9e78 | 1229 | !vrf_bitmap_check (zclient->redist[AFI_IP][ZEBRA_ROUTE_BGP], bgp->vrf_id)) |
7076bb2f | 1230 | || (p->family == AF_INET6 && |
6aeb9e78 | 1231 | !vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_BGP], bgp->vrf_id))) |
718e3744 | 1232 | return; |
1233 | ||
4a16ae86 DS |
1234 | if (bgp->main_zebra_update_hold) |
1235 | return; | |
1236 | ||
718e3744 | 1237 | flags = 0; |
1238 | peer = info->peer; | |
1239 | ||
0d9551dc DS |
1240 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1241 | tag = info->attr->extra->tag; | |
1242 | else | |
1243 | tag = 0; | |
1244 | ||
f992e2a9 DS |
1245 | /* When we create an aggregate route we must also install a Null0 route in |
1246 | * the RIB */ | |
1247 | if (info->sub_type == BGP_ROUTE_AGGREGATE) | |
1248 | SET_FLAG (flags, ZEBRA_FLAG_BLACKHOLE); | |
1249 | ||
1250 | if (peer->sort == BGP_PEER_IBGP || peer->sort == BGP_PEER_CONFED || | |
1251 | info->sub_type == BGP_ROUTE_AGGREGATE) | |
718e3744 | 1252 | { |
1253 | SET_FLAG (flags, ZEBRA_FLAG_IBGP); | |
1254 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); | |
1255 | } | |
1256 | ||
6d85b15b | 1257 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
907f92c8 DS |
1258 | || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) |
1259 | || bgp_flag_check(bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
1260 | ||
718e3744 | 1261 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); |
1262 | ||
431aa9f9 | 1263 | nhcount = 1 + bgp_info_mpath_count (info); |
8196f13d | 1264 | |
8a92a8a0 | 1265 | if (p->family == AF_INET && !BGP_ATTR_NEXTHOP_AFI_IP6(info->attr)) |
718e3744 | 1266 | { |
1267 | struct zapi_ipv4 api; | |
1268 | struct in_addr *nexthop; | |
73ac8160 DS |
1269 | char buf[2][INET_ADDRSTRLEN]; |
1270 | int valid_nh_count = 0; | |
718e3744 | 1271 | |
431aa9f9 DS |
1272 | /* resize nexthop buffer size if necessary */ |
1273 | if ((oldsize = stream_get_size (bgp_nexthop_buf)) < | |
1274 | (sizeof (struct in_addr *) * nhcount)) | |
1275 | { | |
1276 | newsize = (sizeof (struct in_addr *) * nhcount); | |
1277 | newsize = stream_resize (bgp_nexthop_buf, newsize); | |
1278 | if (newsize == oldsize) | |
1279 | { | |
1280 | zlog_err ("can't resize nexthop buffer"); | |
1281 | return; | |
1282 | } | |
1283 | } | |
1284 | stream_reset (bgp_nexthop_buf); | |
73ac8160 DS |
1285 | nexthop = NULL; |
1286 | ||
1287 | /* Metric is currently based on the best-path only. */ | |
1288 | metric = info->attr->med; | |
1289 | ||
1290 | if (bgp->table_map[afi][safi].name) | |
1291 | { | |
1292 | BGP_INFO_ATTR_BUF_INIT(); | |
1293 | ||
1294 | /* Copy info and attributes, so the route-map apply doesn't modify the | |
1295 | BGP route info. */ | |
1296 | BGP_INFO_ATTR_BUF_COPY(info, info_cp); | |
1297 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1298 | { | |
1299 | metric = info_cp->attr->med; | |
1300 | nexthop = &info_cp->attr->nexthop; | |
0d9551dc DS |
1301 | |
1302 | if (info_cp->attr->extra) | |
1303 | tag = info_cp->attr->extra->tag; | |
73ac8160 DS |
1304 | } |
1305 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1306 | } | |
1307 | else | |
1308 | { | |
1309 | nexthop = &info->attr->nexthop; | |
1310 | } | |
1311 | ||
1312 | if (nexthop) | |
1313 | { | |
1314 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in_addr *)); | |
1315 | valid_nh_count++; | |
1316 | } | |
431aa9f9 | 1317 | |
8196f13d | 1318 | for (mpinfo = bgp_info_mpath_first (info); mpinfo; |
73ac8160 DS |
1319 | mpinfo = bgp_info_mpath_next (mpinfo)) |
1320 | { | |
1321 | nexthop = NULL; | |
1322 | ||
1323 | if (bgp->table_map[afi][safi].name) | |
1324 | { | |
1325 | /* Copy info and attributes, so the route-map apply doesn't modify the | |
1326 | BGP route info. */ | |
1327 | BGP_INFO_ATTR_BUF_COPY(mpinfo, info_cp); | |
1328 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1329 | nexthop = &info_cp->attr->nexthop; | |
1330 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1331 | } | |
1332 | else | |
1333 | { | |
1334 | nexthop = &mpinfo->attr->nexthop; | |
1335 | } | |
1336 | ||
1337 | if (nexthop == NULL) | |
1338 | continue; | |
1339 | ||
1340 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in_addr *)); | |
1341 | valid_nh_count++; | |
1342 | } | |
718e3744 | 1343 | |
6aeb9e78 | 1344 | api.vrf_id = bgp->vrf_id; |
73ac8160 | 1345 | api.flags = flags; |
718e3744 | 1346 | api.type = ZEBRA_ROUTE_BGP; |
7c8ff89e | 1347 | api.instance = 0; |
718e3744 | 1348 | api.message = 0; |
5a616c08 | 1349 | api.safi = safi; |
718e3744 | 1350 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
f992e2a9 DS |
1351 | |
1352 | /* Note that this currently only applies to Null0 routes for aggregates. | |
1353 | * ZEBRA_FLAG_BLACKHOLE signals zapi_ipv4_route to encode a special | |
1354 | * BLACKHOLE nexthop. We want to set api.nexthop_num to zero since we | |
1355 | * do not want to also encode the 0.0.0.0 nexthop for the aggregate route. | |
1356 | */ | |
1357 | if (CHECK_FLAG(flags, ZEBRA_FLAG_BLACKHOLE)) | |
1358 | api.nexthop_num = 0; | |
1359 | else | |
1360 | api.nexthop_num = valid_nh_count; | |
1361 | ||
8196f13d | 1362 | api.nexthop = (struct in_addr **)STREAM_DATA (bgp_nexthop_buf); |
718e3744 | 1363 | api.ifindex_num = 0; |
1364 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
73ac8160 | 1365 | api.metric = metric; |
d2921c7a | 1366 | api.tag = 0; |
718e3744 | 1367 | |
0d9551dc DS |
1368 | if (tag) |
1369 | { | |
1370 | SET_FLAG (api.message, ZAPI_MESSAGE_TAG); | |
1371 | api.tag = tag; | |
1372 | } | |
1373 | ||
718e3744 | 1374 | distance = bgp_distance_apply (p, info, bgp); |
1375 | ||
1376 | if (distance) | |
1377 | { | |
1378 | SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE); | |
1379 | api.distance = distance; | |
1380 | } | |
a39275d7 | 1381 | |
16286195 | 1382 | if (bgp_debug_zebra(p)) |
73ac8160 DS |
1383 | { |
1384 | int i; | |
ad4cbda1 | 1385 | zlog_debug("Tx IPv4 route %s VRF %u %s/%d metric %u tag %d" |
73ac8160 | 1386 | " count %d", (valid_nh_count ? "add":"delete"), |
ad4cbda1 | 1387 | bgp->vrf_id, |
73ac8160 | 1388 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
0d9551dc | 1389 | p->prefixlen, api.metric, api.tag, api.nexthop_num); |
73ac8160 DS |
1390 | for (i = 0; i < api.nexthop_num; i++) |
1391 | zlog_debug(" IPv4 [nexthop %d] %s", i+1, | |
1392 | inet_ntop(AF_INET, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1393 | } | |
a39275d7 | 1394 | |
73ac8160 DS |
1395 | zapi_ipv4_route (valid_nh_count ? ZEBRA_IPV4_ROUTE_ADD: ZEBRA_IPV4_ROUTE_DELETE, |
1396 | zclient, (struct prefix_ipv4 *) p, &api); | |
718e3744 | 1397 | } |
1398 | #ifdef HAVE_IPV6 | |
431aa9f9 | 1399 | |
718e3744 | 1400 | /* We have to think about a IPv6 link-local address curse. */ |
8a92a8a0 DS |
1401 | if (p->family == AF_INET6 || |
1402 | (p->family == AF_INET && BGP_ATTR_NEXTHOP_AFI_IP6(info->attr))) | |
718e3744 | 1403 | { |
1404 | unsigned int ifindex; | |
1405 | struct in6_addr *nexthop; | |
1406 | struct zapi_ipv6 api; | |
431aa9f9 | 1407 | int valid_nh_count = 0; |
73ac8160 | 1408 | char buf[2][INET6_ADDRSTRLEN]; |
431aa9f9 DS |
1409 | |
1410 | /* resize nexthop buffer size if necessary */ | |
1411 | if ((oldsize = stream_get_size (bgp_nexthop_buf)) < | |
1412 | (sizeof (struct in6_addr *) * nhcount)) | |
1413 | { | |
1414 | newsize = (sizeof (struct in6_addr *) * nhcount); | |
1415 | newsize = stream_resize (bgp_nexthop_buf, newsize); | |
1416 | if (newsize == oldsize) | |
1417 | { | |
1418 | zlog_err ("can't resize nexthop buffer"); | |
1419 | return; | |
1420 | } | |
1421 | } | |
1422 | stream_reset (bgp_nexthop_buf); | |
1423 | ||
1424 | /* resize ifindices buffer size if necessary */ | |
1425 | if ((oldsize = stream_get_size (bgp_ifindices_buf)) < | |
1426 | (sizeof (unsigned int) * nhcount)) | |
1427 | { | |
1428 | newsize = (sizeof (unsigned int) * nhcount); | |
1429 | newsize = stream_resize (bgp_ifindices_buf, newsize); | |
1430 | if (newsize == oldsize) | |
1431 | { | |
1432 | zlog_err ("can't resize nexthop buffer"); | |
1433 | return; | |
1434 | } | |
1435 | } | |
1436 | stream_reset (bgp_ifindices_buf); | |
718e3744 | 1437 | |
1438 | ifindex = 0; | |
1439 | nexthop = NULL; | |
431aa9f9 | 1440 | |
fb982c25 | 1441 | assert (info->attr->extra); |
718e3744 | 1442 | |
73ac8160 DS |
1443 | /* Metric is currently based on the best-path only. */ |
1444 | metric = info->attr->med; | |
1445 | ||
1446 | if (bgp->table_map[afi][safi].name) | |
1447 | { | |
1448 | BGP_INFO_ATTR_BUF_INIT(); | |
718e3744 | 1449 | |
73ac8160 DS |
1450 | /* Copy info and attributes, so the route-map apply doesn't modify the |
1451 | BGP route info. */ | |
1452 | BGP_INFO_ATTR_BUF_COPY(info, info_cp); | |
1453 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1454 | { | |
1455 | metric = info_cp->attr->med; | |
1456 | nexthop = bgp_info_to_ipv6_nexthop(info_cp); | |
0d9551dc DS |
1457 | |
1458 | if (info_cp->attr->extra) | |
1459 | tag = info_cp->attr->extra->tag; | |
73ac8160 DS |
1460 | } |
1461 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1462 | } | |
1463 | else | |
1464 | { | |
1465 | nexthop = bgp_info_to_ipv6_nexthop(info); | |
1466 | } | |
718e3744 | 1467 | |
73ac8160 DS |
1468 | if (nexthop) |
1469 | { | |
801a9bcc | 1470 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
1471 | if (info->peer->nexthop.ifp) |
1472 | ifindex = info->peer->nexthop.ifp->ifindex; | |
1473 | ||
1474 | if (!ifindex) | |
ffd0c037 DS |
1475 | { |
1476 | if (info->peer->conf_if || info->peer->ifname) | |
1477 | ifindex = if_nametoindex (info->peer->conf_if ? info->peer->conf_if : info->peer->ifname); | |
1478 | else if (info->peer->nexthop.ifp) | |
1479 | ifindex = info->peer->nexthop.ifp->ifindex; | |
1480 | } | |
73ac8160 DS |
1481 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in6_addr *)); |
1482 | stream_put (bgp_ifindices_buf, &ifindex, sizeof (unsigned int)); | |
1483 | valid_nh_count++; | |
1484 | } | |
431aa9f9 DS |
1485 | |
1486 | for (mpinfo = bgp_info_mpath_first (info); mpinfo; | |
1487 | mpinfo = bgp_info_mpath_next (mpinfo)) | |
73ac8160 DS |
1488 | { |
1489 | ifindex = 0; | |
1490 | nexthop = NULL; | |
000830bd | 1491 | |
73ac8160 | 1492 | if (bgp->table_map[afi][safi].name) |
431aa9f9 | 1493 | { |
73ac8160 DS |
1494 | /* Copy info and attributes, so the route-map apply doesn't modify the |
1495 | BGP route info. */ | |
1496 | BGP_INFO_ATTR_BUF_COPY(mpinfo, info_cp); | |
1497 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1498 | nexthop = bgp_info_to_ipv6_nexthop(info_cp); | |
1499 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1500 | } | |
1501 | else | |
1502 | { | |
1503 | nexthop = bgp_info_to_ipv6_nexthop(mpinfo); | |
431aa9f9 | 1504 | } |
431aa9f9 | 1505 | |
73ac8160 DS |
1506 | if (nexthop == NULL) |
1507 | continue; | |
1508 | ||
801a9bcc | 1509 | if (mpinfo->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
1510 | if (mpinfo->peer->nexthop.ifp) |
1511 | ifindex = mpinfo->peer->nexthop.ifp->ifindex; | |
000830bd DS |
1512 | |
1513 | if (!ifindex) | |
ffd0c037 DS |
1514 | { |
1515 | if (mpinfo->peer->conf_if || mpinfo->peer->ifname) | |
322e5964 | 1516 | ifindex = ifname2ifindex (mpinfo->peer->conf_if ? mpinfo->peer->conf_if : mpinfo->peer->ifname); |
ffd0c037 DS |
1517 | else if (mpinfo->peer->nexthop.ifp) |
1518 | ifindex = mpinfo->peer->nexthop.ifp->ifindex; | |
1519 | } | |
73ac8160 DS |
1520 | if (ifindex == 0) |
1521 | continue; | |
431aa9f9 DS |
1522 | |
1523 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in6_addr *)); | |
1524 | stream_put (bgp_ifindices_buf, &ifindex, sizeof (unsigned int)); | |
1525 | valid_nh_count++; | |
73ac8160 | 1526 | } |
718e3744 | 1527 | |
1528 | /* Make Zebra API structure. */ | |
6aeb9e78 | 1529 | api.vrf_id = bgp->vrf_id; |
718e3744 | 1530 | api.flags = flags; |
1531 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1532 | api.instance = 0; |
718e3744 | 1533 | api.message = 0; |
c7ec179a | 1534 | api.safi = safi; |
718e3744 | 1535 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
f992e2a9 DS |
1536 | |
1537 | /* Note that this currently only applies to Null0 routes for aggregates. | |
1538 | * ZEBRA_FLAG_BLACKHOLE signals zapi_ipv6_route to encode a special | |
1539 | * BLACKHOLE nexthop. We want to set api.nexthop_num to zero since we | |
1540 | * do not want to also encode the :: nexthop for the aggregate route. | |
1541 | */ | |
1542 | if (CHECK_FLAG(flags, ZEBRA_FLAG_BLACKHOLE)) | |
1543 | api.nexthop_num = 0; | |
1544 | else | |
1545 | api.nexthop_num = valid_nh_count; | |
1546 | ||
431aa9f9 | 1547 | api.nexthop = (struct in6_addr **)STREAM_DATA (bgp_nexthop_buf); |
718e3744 | 1548 | SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX); |
431aa9f9 DS |
1549 | api.ifindex_num = valid_nh_count; |
1550 | api.ifindex = (unsigned int *)STREAM_DATA (bgp_ifindices_buf); | |
718e3744 | 1551 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); |
73ac8160 | 1552 | api.metric = metric; |
d2921c7a | 1553 | api.tag = 0; |
718e3744 | 1554 | |
0d9551dc DS |
1555 | if (tag) |
1556 | { | |
1557 | SET_FLAG (api.message, ZAPI_MESSAGE_TAG); | |
1558 | api.tag = tag; | |
1559 | } | |
1560 | ||
8a92a8a0 | 1561 | if (p->family == AF_INET) |
73ac8160 | 1562 | { |
8a92a8a0 DS |
1563 | if (bgp_debug_zebra(p)) |
1564 | { | |
1565 | int i; | |
ad4cbda1 | 1566 | zlog_debug("Tx IPv4 route %s VRF %u %s/%d metric %u tag %d", |
1567 | valid_nh_count ? "add" : "delete", bgp->vrf_id, | |
8a92a8a0 DS |
1568 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
1569 | p->prefixlen, api.metric, api.tag); | |
1570 | for (i = 0; i < api.nexthop_num; i++) | |
1571 | zlog_debug(" IPv6 [nexthop %d] %s", i+1, | |
1572 | inet_ntop(AF_INET6, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1573 | } | |
1574 | ||
1575 | if (valid_nh_count) | |
1576 | zapi_ipv4_route_ipv6_nexthop (ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD, | |
88177fe3 DS |
1577 | zclient, (struct prefix_ipv4 *) p, |
1578 | (struct zapi_ipv6 *)&api); | |
8a92a8a0 DS |
1579 | else |
1580 | zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, | |
88177fe3 | 1581 | zclient, (struct prefix_ipv4 *) p, (struct zapi_ipv4 *)&api); |
73ac8160 | 1582 | } |
8a92a8a0 DS |
1583 | else |
1584 | { | |
1585 | if (bgp_debug_zebra(p)) | |
1586 | { | |
1587 | int i; | |
ad4cbda1 | 1588 | zlog_debug("Tx IPv6 route %s VRF %u %s/%d metric %u tag %d", |
1589 | valid_nh_count ? "add" : "delete", bgp->vrf_id, | |
8a92a8a0 DS |
1590 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), |
1591 | p->prefixlen, api.metric, api.tag); | |
1592 | for (i = 0; i < api.nexthop_num; i++) | |
1593 | zlog_debug(" IPv6 [nexthop %d] %s", i+1, | |
1594 | inet_ntop(AF_INET6, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1595 | } | |
a39275d7 | 1596 | |
8a92a8a0 DS |
1597 | zapi_ipv6_route (valid_nh_count ? |
1598 | ZEBRA_IPV6_ROUTE_ADD : ZEBRA_IPV6_ROUTE_DELETE, | |
1599 | zclient, (struct prefix_ipv6 *) p, &api); | |
1600 | } | |
718e3744 | 1601 | } |
1602 | #endif /* HAVE_IPV6 */ | |
1603 | } | |
1604 | ||
73ac8160 DS |
1605 | /* Announce all routes of a table to zebra */ |
1606 | void | |
1607 | bgp_zebra_announce_table (struct bgp *bgp, afi_t afi, safi_t safi) | |
1608 | { | |
1609 | struct bgp_node *rn; | |
1610 | struct bgp_table *table; | |
1611 | struct bgp_info *ri; | |
1612 | ||
ad4cbda1 | 1613 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't |
1614 | * know of this instance. | |
1615 | */ | |
1616 | if (!bgp_install_info_to_zebra (bgp)) | |
1617 | return; | |
1618 | ||
73ac8160 | 1619 | table = bgp->rib[afi][safi]; |
4a16ae86 | 1620 | if (!table) return; |
73ac8160 DS |
1621 | |
1622 | for (rn = bgp_table_top (table); rn; rn = bgp_route_next (rn)) | |
1623 | for (ri = rn->info; ri; ri = ri->next) | |
1624 | if (CHECK_FLAG (ri->flags, BGP_INFO_SELECTED) | |
1625 | && ri->type == ZEBRA_ROUTE_BGP | |
1626 | && ri->sub_type == BGP_ROUTE_NORMAL) | |
1627 | bgp_zebra_announce (&rn->p, ri, bgp, afi, safi); | |
1628 | } | |
1629 | ||
718e3744 | 1630 | void |
5a616c08 | 1631 | bgp_zebra_withdraw (struct prefix *p, struct bgp_info *info, safi_t safi) |
718e3744 | 1632 | { |
1633 | int flags; | |
1634 | struct peer *peer; | |
1635 | ||
6aeb9e78 | 1636 | peer = info->peer; |
ad4cbda1 | 1637 | assert(peer); |
1638 | ||
1639 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't | |
1640 | * know of this instance. | |
1641 | */ | |
1642 | if (!bgp_install_info_to_zebra (peer->bgp)) | |
1643 | return; | |
6aeb9e78 | 1644 | |
7076bb2f | 1645 | if ((p->family == AF_INET && |
6aeb9e78 | 1646 | !vrf_bitmap_check (zclient->redist[AFI_IP][ZEBRA_ROUTE_BGP], peer->bgp->vrf_id)) |
7076bb2f | 1647 | || (p->family == AF_INET6 && |
6aeb9e78 | 1648 | !vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_BGP], peer->bgp->vrf_id))) |
718e3744 | 1649 | return; |
1650 | ||
718e3744 | 1651 | flags = 0; |
1652 | ||
6d85b15b | 1653 | if (peer->sort == BGP_PEER_IBGP) |
718e3744 | 1654 | { |
1655 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); | |
1656 | SET_FLAG (flags, ZEBRA_FLAG_IBGP); | |
1657 | } | |
1658 | ||
6d85b15b | 1659 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
907f92c8 DS |
1660 | || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) |
1661 | || bgp_flag_check(peer->bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
718e3744 | 1662 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); |
1663 | ||
1664 | if (p->family == AF_INET) | |
1665 | { | |
1666 | struct zapi_ipv4 api; | |
718e3744 | 1667 | |
6aeb9e78 | 1668 | api.vrf_id = peer->bgp->vrf_id; |
718e3744 | 1669 | api.flags = flags; |
718e3744 | 1670 | |
1671 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1672 | api.instance = 0; |
718e3744 | 1673 | api.message = 0; |
5a616c08 | 1674 | api.safi = safi; |
718e3744 | 1675 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
76145957 DS |
1676 | api.nexthop_num = 0; |
1677 | api.nexthop = NULL; | |
718e3744 | 1678 | api.ifindex_num = 0; |
1679 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
1680 | api.metric = info->attr->med; | |
d2921c7a | 1681 | api.tag = 0; |
718e3744 | 1682 | |
0d9551dc DS |
1683 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1684 | { | |
1685 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1686 | api.tag = info->attr->extra->tag; | |
1687 | } | |
1688 | ||
16286195 | 1689 | if (bgp_debug_zebra(p)) |
a39275d7 AS |
1690 | { |
1691 | char buf[2][INET_ADDRSTRLEN]; | |
ad4cbda1 | 1692 | zlog_debug("Tx IPv4 route delete VRF %u %s/%d metric %u tag %d", |
1693 | peer->bgp->vrf_id, | |
a39275d7 | 1694 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
fbf288a5 | 1695 | p->prefixlen, api.metric, api.tag); |
a39275d7 AS |
1696 | } |
1697 | ||
0a589359 | 1698 | zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, zclient, |
1699 | (struct prefix_ipv4 *) p, &api); | |
718e3744 | 1700 | } |
1701 | #ifdef HAVE_IPV6 | |
1702 | /* We have to think about a IPv6 link-local address curse. */ | |
1703 | if (p->family == AF_INET6) | |
1704 | { | |
1705 | struct zapi_ipv6 api; | |
fb982c25 PJ |
1706 | |
1707 | assert (info->attr->extra); | |
322e5964 | 1708 | |
6aeb9e78 | 1709 | api.vrf_id = peer->bgp->vrf_id; |
718e3744 | 1710 | api.flags = flags; |
1711 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1712 | api.instance = 0; |
718e3744 | 1713 | api.message = 0; |
c7ec179a | 1714 | api.safi = safi; |
718e3744 | 1715 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
fbf288a5 DS |
1716 | api.nexthop_num = 0; |
1717 | api.nexthop = NULL; | |
1718 | api.ifindex_num = 0; | |
718e3744 | 1719 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); |
1720 | api.metric = info->attr->med; | |
d2921c7a | 1721 | api.tag = 0; |
718e3744 | 1722 | |
0d9551dc DS |
1723 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1724 | { | |
1725 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1726 | api.tag = info->attr->extra->tag; | |
1727 | } | |
1728 | ||
16286195 | 1729 | if (bgp_debug_zebra(p)) |
a39275d7 AS |
1730 | { |
1731 | char buf[2][INET6_ADDRSTRLEN]; | |
ad4cbda1 | 1732 | zlog_debug("Tx IPv6 route delete VRF %u %s/%d metric %u tag %d", |
1733 | peer->bgp->vrf_id, | |
a39275d7 | 1734 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), |
fbf288a5 | 1735 | p->prefixlen, api.metric, api.tag); |
a39275d7 AS |
1736 | } |
1737 | ||
0a589359 | 1738 | zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, |
1739 | (struct prefix_ipv6 *) p, &api); | |
718e3744 | 1740 | } |
1741 | #endif /* HAVE_IPV6 */ | |
1742 | } | |
7c8ff89e DS |
1743 | struct bgp_redist * |
1744 | bgp_redist_lookup (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1745 | { | |
1746 | struct list *red_list; | |
1747 | struct listnode *node; | |
1748 | struct bgp_redist *red; | |
1749 | ||
1750 | red_list = bgp->redist[afi][type]; | |
1751 | if (!red_list) | |
1752 | return(NULL); | |
1753 | ||
1754 | for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) | |
1755 | if (red->instance == instance) | |
1756 | return red; | |
1757 | ||
1758 | return NULL; | |
1759 | } | |
1760 | ||
1761 | struct bgp_redist * | |
1762 | bgp_redist_add (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1763 | { | |
1764 | struct list *red_list; | |
1765 | struct bgp_redist *red; | |
1766 | ||
1767 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1768 | if (red) | |
1769 | return red; | |
1770 | ||
1771 | if (!bgp->redist[afi][type]) | |
1772 | bgp->redist[afi][type] = list_new(); | |
1773 | ||
1774 | red_list = bgp->redist[afi][type]; | |
6e919709 | 1775 | red = (struct bgp_redist *)XCALLOC(MTYPE_BGP_REDIST, sizeof(struct bgp_redist)); |
7c8ff89e DS |
1776 | red->instance = instance; |
1777 | ||
1778 | listnode_add(red_list, red); | |
1779 | ||
1780 | return red; | |
1781 | } | |
1782 | ||
1783 | static void | |
1784 | bgp_redist_del (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1785 | { | |
1786 | struct bgp_redist *red; | |
1787 | ||
1788 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1789 | ||
1790 | if (red) | |
1791 | { | |
1792 | listnode_delete(bgp->redist[afi][type], red); | |
1793 | if (!bgp->redist[afi][type]->count) | |
1794 | { | |
1795 | list_free(bgp->redist[afi][type]); | |
1796 | bgp->redist[afi][type] = NULL; | |
1797 | } | |
1798 | } | |
1799 | } | |
6b0655a2 | 1800 | |
718e3744 | 1801 | /* Other routes redistribution into BGP. */ |
1802 | int | |
6aeb9e78 | 1803 | bgp_redistribute_set (struct bgp *bgp, afi_t afi, int type, u_short instance) |
718e3744 | 1804 | { |
718e3744 | 1805 | |
1806 | /* Return if already redistribute flag is set. */ | |
7076bb2f FL |
1807 | if (instance) |
1808 | { | |
1809 | if (redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1810 | return CMD_WARNING; | |
718e3744 | 1811 | |
7076bb2f FL |
1812 | redist_add_instance(&zclient->mi_redist[afi][type], instance); |
1813 | } | |
1814 | else | |
1815 | { | |
6aeb9e78 | 1816 | if (vrf_bitmap_check (zclient->redist[afi][type], bgp->vrf_id)) |
7076bb2f FL |
1817 | return CMD_WARNING; |
1818 | ||
6aeb9e78 | 1819 | vrf_bitmap_set (zclient->redist[afi][type], bgp->vrf_id); |
7076bb2f | 1820 | } |
718e3744 | 1821 | |
ad4cbda1 | 1822 | /* Don't try to register if we're not connected to Zebra or Zebra doesn't |
1823 | * know of this instance. | |
1824 | */ | |
1825 | if (!bgp_install_info_to_zebra (bgp)) | |
718e3744 | 1826 | return CMD_WARNING; |
a39275d7 | 1827 | |
16286195 | 1828 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 1829 | zlog_debug("Tx redistribute add VRF %u afi %d %s %d", |
1830 | bgp->vrf_id, afi, | |
8bb0831e | 1831 | zebra_route_string(type), instance); |
518f0eb1 | 1832 | |
718e3744 | 1833 | /* Send distribute add message to zebra. */ |
7076bb2f | 1834 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, |
6aeb9e78 | 1835 | instance, bgp->vrf_id); |
718e3744 | 1836 | |
1837 | return CMD_SUCCESS; | |
1838 | } | |
1839 | ||
518f0eb1 | 1840 | int |
7c8ff89e | 1841 | bgp_redistribute_resend (struct bgp *bgp, afi_t afi, int type, u_short instance) |
518f0eb1 | 1842 | { |
ad4cbda1 | 1843 | /* Don't try to send if we're not connected to Zebra or Zebra doesn't |
1844 | * know of this instance. | |
1845 | */ | |
1846 | if (!bgp_install_info_to_zebra (bgp)) | |
518f0eb1 DS |
1847 | return -1; |
1848 | ||
16286195 | 1849 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 1850 | zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d", |
1851 | bgp->vrf_id, afi, | |
8bb0831e | 1852 | zebra_route_string(type), instance); |
518f0eb1 DS |
1853 | |
1854 | /* Send distribute add message to zebra. */ | |
7076bb2f | 1855 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, |
9585bba7 | 1856 | instance, bgp->vrf_id); |
7076bb2f | 1857 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, |
9585bba7 | 1858 | instance, bgp->vrf_id); |
518f0eb1 DS |
1859 | |
1860 | return 0; | |
1861 | } | |
1862 | ||
718e3744 | 1863 | /* Redistribute with route-map specification. */ |
1864 | int | |
7c8ff89e | 1865 | bgp_redistribute_rmap_set (struct bgp_redist *red, const char *name) |
718e3744 | 1866 | { |
7c8ff89e DS |
1867 | if (red->rmap.name |
1868 | && (strcmp (red->rmap.name, name) == 0)) | |
718e3744 | 1869 | return 0; |
1870 | ||
7c8ff89e | 1871 | if (red->rmap.name) |
6e919709 DS |
1872 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); |
1873 | red->rmap.name = XSTRDUP(MTYPE_ROUTE_MAP_NAME, name); | |
7c8ff89e | 1874 | red->rmap.map = route_map_lookup_by_name (name); |
718e3744 | 1875 | |
1876 | return 1; | |
1877 | } | |
1878 | ||
1879 | /* Redistribute with metric specification. */ | |
1880 | int | |
caf958b4 DS |
1881 | bgp_redistribute_metric_set (struct bgp *bgp, struct bgp_redist *red, afi_t afi, |
1882 | int type, u_int32_t metric) | |
718e3744 | 1883 | { |
caf958b4 DS |
1884 | struct bgp_node *rn; |
1885 | struct bgp_info *ri; | |
1886 | ||
7c8ff89e DS |
1887 | if (red->redist_metric_flag |
1888 | && red->redist_metric == metric) | |
718e3744 | 1889 | return 0; |
1890 | ||
7c8ff89e DS |
1891 | red->redist_metric_flag = 1; |
1892 | red->redist_metric = metric; | |
718e3744 | 1893 | |
caf958b4 DS |
1894 | for (rn = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); rn; rn = bgp_route_next(rn)) { |
1895 | for (ri = rn->info; ri; ri = ri->next) { | |
38244024 DS |
1896 | if (ri->sub_type == BGP_ROUTE_REDISTRIBUTE && ri->type == type && |
1897 | ri->instance == red->instance) { | |
caf958b4 DS |
1898 | ri->attr->med = red->redist_metric; |
1899 | bgp_info_set_flag(rn, ri, BGP_INFO_ATTR_CHANGED); | |
1900 | bgp_process(bgp, rn, afi, SAFI_UNICAST); | |
1901 | } | |
1902 | } | |
1903 | } | |
1904 | ||
718e3744 | 1905 | return 1; |
1906 | } | |
1907 | ||
1908 | /* Unset redistribution. */ | |
1909 | int | |
6aeb9e78 | 1910 | bgp_redistribute_unreg (struct bgp *bgp, afi_t afi, int type, u_short instance) |
718e3744 | 1911 | { |
7c8ff89e DS |
1912 | struct bgp_redist *red; |
1913 | ||
1914 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1915 | if (!red) | |
1916 | return CMD_SUCCESS; | |
718e3744 | 1917 | |
718e3744 | 1918 | /* Return if zebra connection is disabled. */ |
7076bb2f FL |
1919 | if (instance) |
1920 | { | |
1921 | if (!redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1922 | return CMD_WARNING; | |
1923 | redist_del_instance(&zclient->mi_redist[afi][type], instance); | |
1924 | } | |
1925 | else | |
1926 | { | |
6aeb9e78 | 1927 | if (! vrf_bitmap_check (zclient->redist[afi][type], bgp->vrf_id)) |
7076bb2f | 1928 | return CMD_WARNING; |
6aeb9e78 | 1929 | vrf_bitmap_unset (zclient->redist[afi][type], bgp->vrf_id); |
7076bb2f | 1930 | } |
718e3744 | 1931 | |
ad4cbda1 | 1932 | if (bgp_install_info_to_zebra (bgp)) |
a39275d7 AS |
1933 | { |
1934 | /* Send distribute delete message to zebra. */ | |
16286195 | 1935 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 1936 | zlog_debug("Tx redistribute del VRF %u afi %d %s %d", |
1937 | bgp->vrf_id, afi, zebra_route_string(type), instance); | |
7076bb2f | 1938 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, instance, |
6aeb9e78 | 1939 | bgp->vrf_id); |
a39275d7 | 1940 | } |
718e3744 | 1941 | |
1942 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
7c8ff89e | 1943 | bgp_redistribute_withdraw (bgp, afi, type, instance); |
718e3744 | 1944 | |
1945 | return CMD_SUCCESS; | |
1946 | } | |
1947 | ||
6aeb9e78 DS |
1948 | /* Unset redistribution. */ |
1949 | int | |
1950 | bgp_redistribute_unset (struct bgp *bgp, afi_t afi, int type, u_short instance) | |
1951 | { | |
1952 | struct bgp_redist *red; | |
1953 | ||
1954 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1955 | if (!red) | |
1956 | return CMD_SUCCESS; | |
1957 | ||
1958 | bgp_redistribute_unreg(bgp, afi, type, instance); | |
1959 | ||
1960 | /* Unset route-map. */ | |
1961 | if (red->rmap.name) | |
1962 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); | |
1963 | red->rmap.name = NULL; | |
1964 | red->rmap.map = NULL; | |
1965 | ||
1966 | /* Unset metric. */ | |
1967 | red->redist_metric_flag = 0; | |
1968 | red->redist_metric = 0; | |
1969 | ||
1970 | bgp_redist_del(bgp, afi, type, instance); | |
1971 | ||
1972 | return CMD_SUCCESS; | |
1973 | } | |
1974 | ||
718e3744 | 1975 | void |
94f2b392 | 1976 | bgp_zclient_reset (void) |
718e3744 | 1977 | { |
1978 | zclient_reset (zclient); | |
1979 | } | |
1980 | ||
ad4cbda1 | 1981 | /* Register this instance with Zebra. Invoked upon connect (for |
1982 | * default instance) and when other VRFs are learnt (or created and | |
1983 | * already learnt). | |
1984 | */ | |
1985 | void | |
1986 | bgp_zebra_instance_register (struct bgp *bgp) | |
1987 | { | |
1988 | /* Don't try to register if we're not connected to Zebra */ | |
4c2620da | 1989 | if (!zclient || zclient->sock < 0) |
ad4cbda1 | 1990 | return; |
1991 | ||
1992 | if (BGP_DEBUG (zebra, ZEBRA)) | |
1993 | zlog_debug("Registering VRF %u", bgp->vrf_id); | |
1994 | ||
1995 | /* Register for router-id, interfaces, redistributed routes. */ | |
1996 | zclient_send_reg_requests (zclient, bgp->vrf_id); | |
1997 | } | |
1998 | ||
1999 | /* Deregister this instance with Zebra. Invoked upon the instance | |
2000 | * being deleted (default or VRF) and it is already registered. | |
2001 | */ | |
2002 | void | |
2003 | bgp_zebra_instance_deregister (struct bgp *bgp) | |
2004 | { | |
2005 | /* Don't try to deregister if we're not connected to Zebra */ | |
2006 | if (zclient->sock < 0) | |
2007 | return; | |
2008 | ||
2009 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2010 | zlog_debug("Deregistering VRF %u", bgp->vrf_id); | |
2011 | ||
2012 | /* Deregister for router-id, interfaces, redistributed routes. */ | |
2013 | zclient_send_dereg_requests (zclient, bgp->vrf_id); | |
2014 | } | |
2015 | ||
4a04e5f7 | 2016 | void |
2017 | bgp_zebra_initiate_radv (struct bgp *bgp, struct peer *peer) | |
2018 | { | |
5c81b96a | 2019 | int ra_interval = BGP_UNNUM_DEFAULT_RA_INTERVAL; |
2020 | ||
4a04e5f7 | 2021 | /* Don't try to initiate if we're not connected to Zebra */ |
2022 | if (zclient->sock < 0) | |
2023 | return; | |
2024 | ||
2025 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2026 | zlog_debug("%u: Initiating RA for peer %s", bgp->vrf_id, peer->host); | |
2027 | ||
5c81b96a | 2028 | zclient_send_interface_radv_req (zclient, bgp->vrf_id, peer->ifp, 1, ra_interval); |
4a04e5f7 | 2029 | } |
2030 | ||
2031 | void | |
2032 | bgp_zebra_terminate_radv (struct bgp *bgp, struct peer *peer) | |
2033 | { | |
2034 | /* Don't try to terminate if we're not connected to Zebra */ | |
2035 | if (zclient->sock < 0) | |
2036 | return; | |
2037 | ||
2038 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2039 | zlog_debug("%u: Terminating RA for peer %s", bgp->vrf_id, peer->host); | |
2040 | ||
5c81b96a | 2041 | zclient_send_interface_radv_req (zclient, bgp->vrf_id, peer->ifp, 0, 0); |
4a04e5f7 | 2042 | } |
2043 | ||
ad4cbda1 | 2044 | /* BGP has established connection with Zebra. */ |
7076bb2f FL |
2045 | static void |
2046 | bgp_zebra_connected (struct zclient *zclient) | |
2047 | { | |
6aeb9e78 | 2048 | struct bgp *bgp; |
7076bb2f | 2049 | |
ad4cbda1 | 2050 | /* At this point, we may or may not have BGP instances configured, but |
2051 | * we're only interested in the default VRF (others wouldn't have learnt | |
2052 | * the VRF from Zebra yet.) | |
2053 | */ | |
2054 | bgp = bgp_get_default(); | |
2055 | if (!bgp) | |
2056 | return; | |
2057 | ||
2058 | bgp_zebra_instance_register (bgp); | |
2059 | ||
2376c3f2 | 2060 | /* Send the client registration */ |
2061 | bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER); | |
2062 | ||
ad4cbda1 | 2063 | /* TODO - What if we have peers and networks configured, do we have to |
2064 | * kick-start them? | |
2065 | */ | |
7076bb2f FL |
2066 | } |
2067 | ||
6aeb9e78 | 2068 | |
718e3744 | 2069 | void |
4140ca4d | 2070 | bgp_zebra_init (struct thread_master *master) |
718e3744 | 2071 | { |
2072 | /* Set default values. */ | |
4140ca4d | 2073 | zclient = zclient_new (master); |
7c8ff89e | 2074 | zclient_init (zclient, ZEBRA_ROUTE_BGP, 0); |
7076bb2f | 2075 | zclient->zebra_connected = bgp_zebra_connected; |
18a6dce6 | 2076 | zclient->router_id_update = bgp_router_id_update; |
718e3744 | 2077 | zclient->interface_add = bgp_interface_add; |
2078 | zclient->interface_delete = bgp_interface_delete; | |
2079 | zclient->interface_address_add = bgp_interface_address_add; | |
2080 | zclient->interface_address_delete = bgp_interface_address_delete; | |
a80beece DS |
2081 | zclient->interface_nbr_address_add = bgp_interface_nbr_address_add; |
2082 | zclient->interface_nbr_address_delete = bgp_interface_nbr_address_delete; | |
bfcd43b2 | 2083 | zclient->interface_vrf_update = bgp_interface_vrf_update; |
718e3744 | 2084 | zclient->ipv4_route_add = zebra_read_ipv4; |
2085 | zclient->ipv4_route_delete = zebra_read_ipv4; | |
5048fe14 | 2086 | zclient->redistribute_route_ipv4_add = zebra_read_ipv4; |
2087 | zclient->redistribute_route_ipv4_del = zebra_read_ipv4; | |
718e3744 | 2088 | zclient->interface_up = bgp_interface_up; |
2089 | zclient->interface_down = bgp_interface_down; | |
718e3744 | 2090 | zclient->ipv6_route_add = zebra_read_ipv6; |
2091 | zclient->ipv6_route_delete = zebra_read_ipv6; | |
5048fe14 | 2092 | zclient->redistribute_route_ipv6_add = zebra_read_ipv6; |
2093 | zclient->redistribute_route_ipv6_del = zebra_read_ipv6; | |
fb018d25 | 2094 | zclient->nexthop_update = bgp_read_nexthop_update; |
078430f6 | 2095 | zclient->import_check_update = bgp_read_import_check_update; |
718e3744 | 2096 | |
8196f13d | 2097 | bgp_nexthop_buf = stream_new(BGP_NEXTHOP_BUF_SIZE); |
431aa9f9 | 2098 | bgp_ifindices_buf = stream_new(BGP_IFINDICES_BUF_SIZE); |
718e3744 | 2099 | } |
bb86c601 LB |
2100 | |
2101 | void | |
2102 | bgp_zebra_destroy(void) | |
2103 | { | |
2104 | if (zclient == NULL) | |
2105 | return; | |
2106 | zclient_stop(zclient); | |
2107 | zclient_free(zclient); | |
2108 | zclient = NULL; | |
2109 | } |