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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 | ||
afbb1c59 LB |
112 | int zclient_num_connects; |
113 | ||
18a6dce6 | 114 | /* Router-id update message from zebra. */ |
94f2b392 | 115 | static int |
7076bb2f FL |
116 | bgp_router_id_update (int command, struct zclient *zclient, zebra_size_t length, |
117 | vrf_id_t vrf_id) | |
718e3744 | 118 | { |
18a6dce6 | 119 | struct prefix router_id; |
718e3744 | 120 | |
18a6dce6 | 121 | zebra_router_id_update_read(zclient->ibuf,&router_id); |
a39275d7 | 122 | |
16286195 | 123 | if (BGP_DEBUG (zebra, ZEBRA)) |
a39275d7 | 124 | { |
4690c7d7 | 125 | char buf[PREFIX2STR_BUFFER]; |
a39275d7 | 126 | prefix2str(&router_id, buf, sizeof(buf)); |
ad4cbda1 | 127 | zlog_debug("Rx Router Id update VRF %u Id %s", vrf_id, buf); |
a39275d7 AS |
128 | } |
129 | ||
0e6cb743 | 130 | bgp_router_id_zebra_bump (vrf_id, &router_id); |
718e3744 | 131 | return 0; |
132 | } | |
133 | ||
fb018d25 DS |
134 | /* Nexthop update message from zebra. */ |
135 | static int | |
136 | bgp_read_nexthop_update (int command, struct zclient *zclient, | |
7076bb2f | 137 | zebra_size_t length, vrf_id_t vrf_id) |
fb018d25 | 138 | { |
7076bb2f | 139 | bgp_parse_nexthop_update(command, vrf_id); |
078430f6 DS |
140 | return 0; |
141 | } | |
142 | ||
143 | static int | |
144 | bgp_read_import_check_update(int command, struct zclient *zclient, | |
7076bb2f | 145 | zebra_size_t length, vrf_id_t vrf_id) |
078430f6 | 146 | { |
7076bb2f | 147 | bgp_parse_nexthop_update(command, vrf_id); |
fb018d25 DS |
148 | return 0; |
149 | } | |
150 | ||
4a04e5f7 | 151 | /* Set or clear interface on which unnumbered neighbor is configured. This |
152 | * would in turn cause BGP to initiate or turn off IPv6 RAs on this | |
153 | * interface. | |
154 | */ | |
155 | static void | |
156 | bgp_update_interface_nbrs (struct bgp *bgp, struct interface *ifp, | |
157 | struct interface *upd_ifp) | |
158 | { | |
159 | struct listnode *node, *nnode; | |
160 | struct peer *peer; | |
161 | ||
162 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) | |
163 | { | |
164 | if (peer->conf_if && | |
165 | (strcmp (peer->conf_if, ifp->name) == 0)) | |
166 | { | |
4a04e5f7 | 167 | if (upd_ifp) |
5575a6bb DS |
168 | { |
169 | peer->ifp = upd_ifp; | |
170 | bgp_zebra_initiate_radv (bgp, peer); | |
171 | } | |
4a04e5f7 | 172 | else |
5575a6bb DS |
173 | { |
174 | bgp_zebra_terminate_radv (bgp, peer); | |
175 | peer->ifp = upd_ifp; | |
176 | } | |
4a04e5f7 | 177 | } |
178 | } | |
179 | } | |
180 | ||
a80beece | 181 | static void |
6aeb9e78 | 182 | bgp_start_interface_nbrs (struct bgp *bgp, struct interface *ifp) |
a80beece | 183 | { |
6aeb9e78 | 184 | struct listnode *node, *nnode; |
a80beece DS |
185 | struct peer *peer; |
186 | ||
6aeb9e78 | 187 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
a80beece | 188 | { |
6aeb9e78 DS |
189 | if (peer->conf_if && |
190 | (strcmp (peer->conf_if, ifp->name) == 0) && | |
191 | peer->status != Established) | |
a80beece | 192 | { |
6aeb9e78 DS |
193 | if (peer_active(peer)) |
194 | BGP_EVENT_ADD (peer, BGP_Stop); | |
195 | BGP_EVENT_ADD (peer, BGP_Start); | |
a80beece DS |
196 | } |
197 | } | |
198 | } | |
199 | ||
200 | static void | |
6aeb9e78 | 201 | bgp_nbr_connected_add (struct bgp *bgp, struct nbr_connected *ifc) |
a197c47c DS |
202 | { |
203 | struct listnode *node; | |
204 | struct connected *connected; | |
205 | struct interface *ifp; | |
206 | struct prefix *p; | |
207 | ||
208 | /* Kick-off the FSM for any relevant peers only if there is a | |
209 | * valid local address on the interface. | |
210 | */ | |
211 | ifp = ifc->ifp; | |
212 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, node, connected)) | |
213 | { | |
214 | p = connected->address; | |
215 | if (p->family == AF_INET6 && | |
216 | IN6_IS_ADDR_LINKLOCAL (&p->u.prefix6)) | |
217 | break; | |
218 | } | |
219 | if (!connected) | |
220 | return; | |
221 | ||
6aeb9e78 | 222 | bgp_start_interface_nbrs (bgp, ifp); |
a197c47c DS |
223 | } |
224 | ||
225 | static void | |
6aeb9e78 | 226 | bgp_nbr_connected_delete (struct bgp *bgp, struct nbr_connected *ifc, int del) |
a80beece | 227 | { |
6aeb9e78 | 228 | struct listnode *node, *nnode; |
a80beece | 229 | struct peer *peer; |
a197c47c | 230 | struct interface *ifp; |
a80beece | 231 | |
6aeb9e78 | 232 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
a80beece | 233 | { |
6aeb9e78 | 234 | if (peer->conf_if && (strcmp (peer->conf_if, ifc->ifp->name) == 0)) |
a80beece | 235 | { |
e60480bd | 236 | peer->last_reset = PEER_DOWN_NBR_ADDR_DEL; |
6aeb9e78 | 237 | BGP_EVENT_ADD (peer, BGP_Stop); |
a80beece DS |
238 | } |
239 | } | |
a197c47c DS |
240 | /* Free neighbor also, if we're asked to. */ |
241 | if (del) | |
242 | { | |
243 | ifp = ifc->ifp; | |
244 | listnode_delete (ifp->nbr_connected, ifc); | |
245 | nbr_connected_free (ifc); | |
246 | } | |
a80beece DS |
247 | } |
248 | ||
718e3744 | 249 | /* Inteface addition message from zebra. */ |
94f2b392 | 250 | static int |
7076bb2f FL |
251 | bgp_interface_add (int command, struct zclient *zclient, zebra_size_t length, |
252 | vrf_id_t vrf_id) | |
718e3744 | 253 | { |
254 | struct interface *ifp; | |
4a04e5f7 | 255 | struct bgp *bgp; |
718e3744 | 256 | |
7076bb2f | 257 | ifp = zebra_interface_add_read (zclient->ibuf, vrf_id); |
4a04e5f7 | 258 | if (!ifp) // unexpected |
259 | return 0; | |
718e3744 | 260 | |
16286195 | 261 | if (BGP_DEBUG (zebra, ZEBRA) && ifp) |
ad4cbda1 | 262 | zlog_debug("Rx Intf add VRF %u IF %s", vrf_id, ifp->name); |
a39275d7 | 263 | |
4a04e5f7 | 264 | bgp = bgp_lookup_by_vrf_id (vrf_id); |
265 | if (!bgp) | |
266 | return 0; | |
267 | ||
268 | bgp_update_interface_nbrs (bgp, ifp, ifp); | |
718e3744 | 269 | return 0; |
270 | } | |
271 | ||
94f2b392 | 272 | static int |
718e3744 | 273 | bgp_interface_delete (int command, struct zclient *zclient, |
7076bb2f | 274 | zebra_size_t length, vrf_id_t vrf_id) |
718e3744 | 275 | { |
276 | struct stream *s; | |
277 | struct interface *ifp; | |
4a04e5f7 | 278 | struct bgp *bgp; |
718e3744 | 279 | |
280 | s = zclient->ibuf; | |
7076bb2f | 281 | ifp = zebra_interface_state_read (s, vrf_id); |
4a04e5f7 | 282 | if (!ifp) /* This may happen if we've just unregistered for a VRF. */ |
a4499b83 | 283 | return 0; |
284 | ||
84361d61 | 285 | ifp->ifindex = IFINDEX_DELETED; |
718e3744 | 286 | |
16286195 | 287 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 288 | zlog_debug("Rx Intf del VRF %u IF %s", vrf_id, ifp->name); |
a39275d7 | 289 | |
4a04e5f7 | 290 | bgp = bgp_lookup_by_vrf_id (vrf_id); |
291 | if (!bgp) | |
292 | return 0; | |
293 | ||
294 | bgp_update_interface_nbrs (bgp, ifp, NULL); | |
718e3744 | 295 | return 0; |
296 | } | |
297 | ||
94f2b392 | 298 | static int |
7076bb2f FL |
299 | bgp_interface_up (int command, struct zclient *zclient, zebra_size_t length, |
300 | vrf_id_t vrf_id) | |
718e3744 | 301 | { |
302 | struct stream *s; | |
303 | struct interface *ifp; | |
304 | struct connected *c; | |
a80beece | 305 | struct nbr_connected *nc; |
1eb8ef25 | 306 | struct listnode *node, *nnode; |
6aeb9e78 DS |
307 | struct bgp *bgp; |
308 | ||
718e3744 | 309 | s = zclient->ibuf; |
7076bb2f | 310 | ifp = zebra_interface_state_read (s, vrf_id); |
718e3744 | 311 | |
312 | if (! ifp) | |
313 | return 0; | |
314 | ||
16286195 | 315 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 316 | zlog_debug("Rx Intf up VRF %u IF %s", vrf_id, ifp->name); |
317 | ||
318 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
319 | if (!bgp) | |
320 | return 0; | |
a39275d7 | 321 | |
1eb8ef25 | 322 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) |
6aeb9e78 | 323 | bgp_connected_add (bgp, c); |
718e3744 | 324 | |
a80beece | 325 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) |
6aeb9e78 | 326 | bgp_nbr_connected_add (bgp, nc); |
a80beece | 327 | |
718e3744 | 328 | return 0; |
329 | } | |
330 | ||
94f2b392 | 331 | static int |
7076bb2f FL |
332 | bgp_interface_down (int command, struct zclient *zclient, zebra_size_t length, |
333 | vrf_id_t vrf_id) | |
718e3744 | 334 | { |
335 | struct stream *s; | |
336 | struct interface *ifp; | |
337 | struct connected *c; | |
a80beece | 338 | struct nbr_connected *nc; |
1eb8ef25 | 339 | struct listnode *node, *nnode; |
6aeb9e78 DS |
340 | struct bgp *bgp; |
341 | ||
718e3744 | 342 | s = zclient->ibuf; |
7076bb2f | 343 | ifp = zebra_interface_state_read (s, vrf_id); |
718e3744 | 344 | if (! ifp) |
345 | return 0; | |
346 | ||
16286195 | 347 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 348 | zlog_debug("Rx Intf down VRF %u IF %s", vrf_id, ifp->name); |
349 | ||
350 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
351 | if (!bgp) | |
352 | return 0; | |
a39275d7 | 353 | |
1eb8ef25 | 354 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) |
6aeb9e78 | 355 | bgp_connected_delete (bgp, c); |
718e3744 | 356 | |
a80beece | 357 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) |
6aeb9e78 | 358 | bgp_nbr_connected_delete (bgp, nc, 1); |
a80beece | 359 | |
8da8689d | 360 | /* Fast external-failover */ |
718e3744 | 361 | { |
718e3744 | 362 | struct peer *peer; |
718e3744 | 363 | |
ad4cbda1 | 364 | if (CHECK_FLAG (bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) |
365 | return 0; | |
718e3744 | 366 | |
ad4cbda1 | 367 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
368 | { | |
8c4f6381 | 369 | #if defined(HAVE_CUMULUS) |
370 | /* Take down directly connected EBGP peers as well as 1-hop BFD | |
371 | * tracked (directly connected) IBGP peers. | |
372 | */ | |
373 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1) && | |
374 | (!peer->bfd_info || bgp_bfd_is_peer_multihop(peer))) | |
375 | #else | |
376 | /* Take down directly connected EBGP peers */ | |
ad4cbda1 | 377 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) |
8c4f6381 | 378 | #endif |
ad4cbda1 | 379 | continue; |
718e3744 | 380 | |
ad4cbda1 | 381 | if (ifp == peer->nexthop.ifp) |
e60480bd DD |
382 | { |
383 | BGP_EVENT_ADD (peer, BGP_Stop); | |
384 | peer->last_reset = PEER_DOWN_IF_DOWN; | |
385 | } | |
718e3744 | 386 | } |
387 | } | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
94f2b392 | 392 | static int |
718e3744 | 393 | bgp_interface_address_add (int command, struct zclient *zclient, |
7076bb2f | 394 | zebra_size_t length, vrf_id_t vrf_id) |
718e3744 | 395 | { |
396 | struct connected *ifc; | |
397 | ||
7076bb2f | 398 | ifc = zebra_interface_address_read (command, zclient->ibuf, vrf_id); |
718e3744 | 399 | |
400 | if (ifc == NULL) | |
401 | return 0; | |
402 | ||
16286195 | 403 | if (bgp_debug_zebra(ifc->address)) |
a39275d7 | 404 | { |
4690c7d7 | 405 | char buf[PREFIX2STR_BUFFER]; |
a39275d7 | 406 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 407 | zlog_debug("Rx Intf address add VRF %u IF %s addr %s", |
408 | vrf_id, ifc->ifp->name, buf); | |
a39275d7 AS |
409 | } |
410 | ||
2e3b2e47 | 411 | if (if_is_operative (ifc->ifp)) |
a197c47c | 412 | { |
6aeb9e78 DS |
413 | struct bgp *bgp; |
414 | ||
415 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
416 | if (!bgp) | |
ad4cbda1 | 417 | return 0; |
6aeb9e78 DS |
418 | |
419 | bgp_connected_add (bgp, ifc); | |
a197c47c DS |
420 | /* If we have learnt of any neighbors on this interface, |
421 | * check to kick off any BGP interface-based neighbors, | |
422 | * but only if this is a link-local address. | |
423 | */ | |
424 | if (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6) && | |
425 | !list_isempty(ifc->ifp->nbr_connected)) | |
6aeb9e78 | 426 | bgp_start_interface_nbrs (bgp, ifc->ifp); |
a197c47c | 427 | } |
718e3744 | 428 | |
429 | return 0; | |
430 | } | |
431 | ||
94f2b392 | 432 | static int |
718e3744 | 433 | bgp_interface_address_delete (int command, struct zclient *zclient, |
7076bb2f | 434 | zebra_size_t length, vrf_id_t vrf_id) |
718e3744 | 435 | { |
436 | struct connected *ifc; | |
6aeb9e78 DS |
437 | struct bgp *bgp; |
438 | ||
7076bb2f | 439 | ifc = zebra_interface_address_read (command, zclient->ibuf, vrf_id); |
718e3744 | 440 | |
441 | if (ifc == NULL) | |
442 | return 0; | |
443 | ||
16286195 | 444 | if (bgp_debug_zebra(ifc->address)) |
a39275d7 | 445 | { |
4690c7d7 | 446 | char buf[PREFIX2STR_BUFFER]; |
a39275d7 | 447 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 448 | zlog_debug("Rx Intf address del VRF %u IF %s addr %s", |
449 | vrf_id, ifc->ifp->name, buf); | |
a39275d7 AS |
450 | } |
451 | ||
2e3b2e47 | 452 | if (if_is_operative (ifc->ifp)) |
ad4cbda1 | 453 | { |
454 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
455 | if (bgp) | |
456 | bgp_connected_delete (bgp, ifc); | |
457 | } | |
718e3744 | 458 | |
459 | connected_free (ifc); | |
460 | ||
461 | return 0; | |
462 | } | |
463 | ||
a80beece DS |
464 | static int |
465 | bgp_interface_nbr_address_add (int command, struct zclient *zclient, | |
7076bb2f | 466 | zebra_size_t length, vrf_id_t vrf_id) |
a80beece DS |
467 | { |
468 | struct nbr_connected *ifc = NULL; | |
6aeb9e78 DS |
469 | struct bgp *bgp; |
470 | ||
7076bb2f | 471 | ifc = zebra_interface_nbr_address_read (command, zclient->ibuf, vrf_id); |
a80beece DS |
472 | |
473 | if (ifc == NULL) | |
474 | return 0; | |
475 | ||
16286195 | 476 | if (bgp_debug_zebra(ifc->address)) |
a80beece | 477 | { |
4690c7d7 | 478 | char buf[PREFIX2STR_BUFFER]; |
a80beece | 479 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 480 | zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %s", |
481 | vrf_id, ifc->ifp->name, buf); | |
a80beece DS |
482 | } |
483 | ||
484 | if (if_is_operative (ifc->ifp)) | |
ad4cbda1 | 485 | { |
486 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
487 | if (bgp) | |
488 | bgp_nbr_connected_add (bgp, ifc); | |
489 | } | |
a80beece DS |
490 | |
491 | return 0; | |
492 | } | |
493 | ||
494 | static int | |
495 | bgp_interface_nbr_address_delete (int command, struct zclient *zclient, | |
7076bb2f | 496 | zebra_size_t length, vrf_id_t vrf_id) |
a80beece DS |
497 | { |
498 | struct nbr_connected *ifc = NULL; | |
6aeb9e78 DS |
499 | struct bgp *bgp; |
500 | ||
7076bb2f | 501 | ifc = zebra_interface_nbr_address_read (command, zclient->ibuf, vrf_id); |
a80beece DS |
502 | |
503 | if (ifc == NULL) | |
504 | return 0; | |
505 | ||
16286195 | 506 | if (bgp_debug_zebra(ifc->address)) |
a80beece | 507 | { |
4690c7d7 | 508 | char buf[PREFIX2STR_BUFFER]; |
a80beece | 509 | prefix2str(ifc->address, buf, sizeof(buf)); |
ad4cbda1 | 510 | zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %s", |
511 | vrf_id, ifc->ifp->name, buf); | |
a80beece DS |
512 | } |
513 | ||
514 | if (if_is_operative (ifc->ifp)) | |
ad4cbda1 | 515 | { |
516 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
517 | if (bgp) | |
518 | bgp_nbr_connected_delete (bgp, ifc, 0); | |
519 | } | |
a80beece DS |
520 | |
521 | nbr_connected_free (ifc); | |
522 | ||
523 | return 0; | |
524 | } | |
525 | ||
bfcd43b2 | 526 | /* VRF update for an interface. */ |
527 | static int | |
528 | bgp_interface_vrf_update (int command, struct zclient *zclient, zebra_size_t length, | |
529 | vrf_id_t vrf_id) | |
530 | { | |
531 | struct interface *ifp; | |
532 | vrf_id_t new_vrf_id; | |
533 | struct connected *c; | |
534 | struct nbr_connected *nc; | |
535 | struct listnode *node, *nnode; | |
536 | struct bgp *bgp; | |
537 | ||
538 | ifp = zebra_interface_vrf_update_read (zclient->ibuf, vrf_id, &new_vrf_id); | |
539 | if (! ifp) | |
540 | return 0; | |
541 | ||
542 | if (BGP_DEBUG (zebra, ZEBRA) && ifp) | |
543 | zlog_debug("Rx Intf VRF change VRF %u IF %s NewVRF %u", | |
544 | vrf_id, ifp->name, new_vrf_id); | |
545 | ||
546 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
547 | if (!bgp) | |
548 | return 0; | |
549 | ||
550 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) | |
551 | bgp_connected_delete (bgp, c); | |
552 | ||
553 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) | |
554 | bgp_nbr_connected_delete (bgp, nc, 1); | |
555 | ||
556 | /* Fast external-failover */ | |
557 | { | |
558 | struct peer *peer; | |
559 | ||
560 | if (CHECK_FLAG (bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) | |
561 | return 0; | |
562 | ||
563 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) | |
564 | { | |
565 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) | |
566 | continue; | |
567 | ||
568 | if (ifp == peer->nexthop.ifp) | |
569 | BGP_EVENT_ADD (peer, BGP_Stop); | |
570 | } | |
571 | } | |
572 | ||
573 | if_update_vrf (ifp, ifp->name, strlen (ifp->name), new_vrf_id); | |
574 | ||
575 | bgp = bgp_lookup_by_vrf_id (new_vrf_id); | |
576 | if (!bgp) | |
577 | return 0; | |
578 | ||
579 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) | |
580 | bgp_connected_add (bgp, c); | |
581 | ||
582 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) | |
583 | bgp_nbr_connected_add (bgp, nc); | |
584 | return 0; | |
585 | } | |
586 | ||
718e3744 | 587 | /* Zebra route add and delete treatment. */ |
94f2b392 | 588 | static int |
7076bb2f FL |
589 | zebra_read_ipv4 (int command, struct zclient *zclient, zebra_size_t length, |
590 | vrf_id_t vrf_id) | |
718e3744 | 591 | { |
592 | struct stream *s; | |
593 | struct zapi_ipv4 api; | |
718e3744 | 594 | struct in_addr nexthop; |
595 | struct prefix_ipv4 p; | |
bc413143 | 596 | unsigned int ifindex; |
d289687f | 597 | int i; |
6aeb9e78 DS |
598 | struct bgp *bgp; |
599 | ||
600 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
601 | if (!bgp) | |
602 | return 0; | |
718e3744 | 603 | |
604 | s = zclient->ibuf; | |
718e3744 | 605 | nexthop.s_addr = 0; |
606 | ||
607 | /* Type, flags, message. */ | |
608 | api.type = stream_getc (s); | |
7c8ff89e | 609 | api.instance = stream_getw (s); |
0fc452dc | 610 | api.flags = stream_getl (s); |
718e3744 | 611 | api.message = stream_getc (s); |
612 | ||
613 | /* IPv4 prefix. */ | |
614 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
615 | p.family = AF_INET; | |
d9178828 | 616 | p.prefixlen = MIN(IPV4_MAX_PREFIXLEN, stream_getc (s)); |
718e3744 | 617 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); |
618 | ||
619 | /* Nexthop, ifindex, distance, metric. */ | |
620 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
621 | { | |
622 | api.nexthop_num = stream_getc (s); | |
623 | nexthop.s_addr = stream_get_ipv4 (s); | |
624 | } | |
0d9551dc | 625 | |
718e3744 | 626 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) |
627 | { | |
628 | api.ifindex_num = stream_getc (s); | |
bc413143 | 629 | ifindex = stream_getl (s); /* ifindex, unused */ |
718e3744 | 630 | } |
ffd0c037 DS |
631 | else |
632 | { | |
633 | ifindex = 0; | |
634 | } | |
0d9551dc | 635 | |
718e3744 | 636 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) |
637 | api.distance = stream_getc (s); | |
0d9551dc | 638 | |
718e3744 | 639 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) |
640 | api.metric = stream_getl (s); | |
641 | else | |
642 | api.metric = 0; | |
643 | ||
0d9551dc | 644 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG)) |
dc9ffce8 | 645 | api.tag = stream_getl (s); |
0d9551dc DS |
646 | else |
647 | api.tag = 0; | |
648 | ||
5048fe14 | 649 | if (command == ZEBRA_REDISTRIBUTE_IPV4_ADD) |
a39275d7 | 650 | { |
ffd0c037 | 651 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 AS |
652 | { |
653 | char buf[2][INET_ADDRSTRLEN]; | |
dc9ffce8 | 654 | zlog_debug("Rx IPv4 route add VRF %u %s[%d] %s/%d nexthop %s metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 655 | vrf_id, |
7c8ff89e | 656 | zebra_route_string(api.type), api.instance, |
a39275d7 AS |
657 | inet_ntop(AF_INET, &p.prefix, buf[0], sizeof(buf[0])), |
658 | p.prefixlen, | |
659 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
660 | api.metric, |
661 | api.tag); | |
a39275d7 | 662 | } |
d289687f | 663 | |
664 | /* | |
665 | * The ADD message is actually an UPDATE and there is no explicit DEL | |
666 | * for a prior redistributed route, if any. So, perform an implicit | |
667 | * DEL processing for the same redistributed route from any other | |
668 | * source type. | |
669 | */ | |
670 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
671 | { | |
672 | if (i != api.type) | |
6aeb9e78 | 673 | bgp_redistribute_delete(bgp, (struct prefix *)&p, i, api.instance); |
d289687f | 674 | } |
675 | ||
676 | /* Now perform the add/update. */ | |
6aeb9e78 | 677 | bgp_redistribute_add(bgp, (struct prefix *)&p, &nexthop, NULL, ifindex, |
7c8ff89e | 678 | api.metric, api.type, api.instance, api.tag); |
a39275d7 | 679 | } |
5048fe14 | 680 | else if (command == ZEBRA_REDISTRIBUTE_IPV4_DEL) |
a39275d7 | 681 | { |
ffd0c037 | 682 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 AS |
683 | { |
684 | char buf[2][INET_ADDRSTRLEN]; | |
ad4cbda1 | 685 | zlog_debug("Rx IPv4 route delete VRF %u %s[%d] %s/%d " |
dc9ffce8 | 686 | "nexthop %s metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 687 | vrf_id, |
7c8ff89e | 688 | zebra_route_string(api.type), api.instance, |
a39275d7 AS |
689 | inet_ntop(AF_INET, &p.prefix, buf[0], sizeof(buf[0])), |
690 | p.prefixlen, | |
691 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
692 | api.metric, |
693 | api.tag); | |
a39275d7 | 694 | } |
6aeb9e78 | 695 | bgp_redistribute_delete(bgp, (struct prefix *)&p, api.type, api.instance); |
a39275d7 | 696 | } |
718e3744 | 697 | |
698 | return 0; | |
699 | } | |
700 | ||
718e3744 | 701 | /* Zebra route add and delete treatment. */ |
94f2b392 | 702 | static int |
7076bb2f FL |
703 | zebra_read_ipv6 (int command, struct zclient *zclient, zebra_size_t length, |
704 | vrf_id_t vrf_id) | |
718e3744 | 705 | { |
706 | struct stream *s; | |
707 | struct zapi_ipv6 api; | |
718e3744 | 708 | struct in6_addr nexthop; |
709 | struct prefix_ipv6 p; | |
bc413143 | 710 | unsigned int ifindex; |
d289687f | 711 | int i; |
6aeb9e78 DS |
712 | struct bgp *bgp; |
713 | ||
714 | bgp = bgp_lookup_by_vrf_id (vrf_id); | |
715 | if (!bgp) | |
716 | return 0; | |
718e3744 | 717 | |
718 | s = zclient->ibuf; | |
718e3744 | 719 | memset (&nexthop, 0, sizeof (struct in6_addr)); |
720 | ||
721 | /* Type, flags, message. */ | |
722 | api.type = stream_getc (s); | |
7c8ff89e | 723 | api.instance = stream_getw (s); |
0fc452dc | 724 | api.flags = stream_getl (s); |
718e3744 | 725 | api.message = stream_getc (s); |
726 | ||
727 | /* IPv6 prefix. */ | |
728 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
729 | p.family = AF_INET6; | |
d9178828 | 730 | p.prefixlen = MIN(IPV6_MAX_PREFIXLEN, stream_getc (s)); |
718e3744 | 731 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); |
732 | ||
733 | /* Nexthop, ifindex, distance, metric. */ | |
734 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
735 | { | |
736 | api.nexthop_num = stream_getc (s); | |
737 | stream_get (&nexthop, s, 16); | |
738 | } | |
0d9551dc | 739 | |
718e3744 | 740 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) |
741 | { | |
742 | api.ifindex_num = stream_getc (s); | |
bc413143 | 743 | ifindex = stream_getl (s); /* ifindex, unused */ |
718e3744 | 744 | } |
ffd0c037 DS |
745 | else |
746 | { | |
747 | ifindex = 0; | |
748 | } | |
0d9551dc | 749 | |
718e3744 | 750 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) |
751 | api.distance = stream_getc (s); | |
752 | else | |
753 | api.distance = 0; | |
0d9551dc | 754 | |
718e3744 | 755 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) |
756 | api.metric = stream_getl (s); | |
757 | else | |
758 | api.metric = 0; | |
759 | ||
0d9551dc | 760 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG)) |
dc9ffce8 | 761 | api.tag = stream_getl (s); |
0d9551dc DS |
762 | else |
763 | api.tag = 0; | |
764 | ||
718e3744 | 765 | /* Simply ignore link-local address. */ |
766 | if (IN6_IS_ADDR_LINKLOCAL (&p.prefix)) | |
767 | return 0; | |
768 | ||
5048fe14 | 769 | if (command == ZEBRA_REDISTRIBUTE_IPV6_ADD) |
a39275d7 | 770 | { |
ffd0c037 | 771 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 | 772 | { |
f04a80a5 | 773 | char buf[2][INET6_ADDRSTRLEN]; |
dc9ffce8 | 774 | zlog_debug("Rx IPv6 route add VRF %u %s[%d] %s/%d nexthop %s metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 775 | vrf_id, |
7c8ff89e | 776 | zebra_route_string(api.type), api.instance, |
f04a80a5 SH |
777 | inet_ntop(AF_INET6, &p.prefix, buf[0], sizeof(buf[0])), |
778 | p.prefixlen, | |
779 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
780 | api.metric, |
781 | api.tag); | |
a39275d7 | 782 | } |
d289687f | 783 | |
784 | /* | |
785 | * The ADD message is actually an UPDATE and there is no explicit DEL | |
786 | * for a prior redistributed route, if any. So, perform an implicit | |
787 | * DEL processing for the same redistributed route from any other | |
788 | * source type. | |
789 | */ | |
790 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
791 | { | |
792 | if (i != api.type) | |
6aeb9e78 | 793 | bgp_redistribute_delete(bgp, (struct prefix *)&p, i, api.instance); |
d289687f | 794 | } |
795 | ||
6aeb9e78 | 796 | bgp_redistribute_add (bgp, (struct prefix *)&p, NULL, &nexthop, ifindex, |
7c8ff89e | 797 | api.metric, api.type, api.instance, api.tag); |
a39275d7 | 798 | } |
5048fe14 | 799 | else if (command == ZEBRA_REDISTRIBUTE_IPV6_DEL) |
a39275d7 | 800 | { |
ffd0c037 | 801 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 | 802 | { |
f04a80a5 | 803 | char buf[2][INET6_ADDRSTRLEN]; |
ad4cbda1 | 804 | zlog_debug("Rx IPv6 route delete VRF %u %s[%d] %s/%d " |
dc9ffce8 | 805 | "nexthop %s metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 806 | vrf_id, |
7c8ff89e | 807 | zebra_route_string(api.type), api.instance, |
f04a80a5 SH |
808 | inet_ntop(AF_INET6, &p.prefix, buf[0], sizeof(buf[0])), |
809 | p.prefixlen, | |
810 | inet_ntop(AF_INET6, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
811 | api.metric, |
812 | api.tag); | |
a39275d7 | 813 | } |
6aeb9e78 | 814 | bgp_redistribute_delete (bgp, (struct prefix *) &p, api.type, api.instance); |
a39275d7 | 815 | } |
718e3744 | 816 | |
817 | return 0; | |
818 | } | |
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 | ||
718e3744 | 871 | struct interface * |
b892f1dd | 872 | if_lookup_by_ipv6 (struct in6_addr *addr, ifindex_t ifindex, vrf_id_t vrf_id) |
718e3744 | 873 | { |
52dc7ee6 | 874 | struct listnode *ifnode; |
875 | struct listnode *cnode; | |
718e3744 | 876 | struct interface *ifp; |
877 | struct connected *connected; | |
878 | struct prefix_ipv6 p; | |
879 | struct prefix *cp; | |
880 | ||
881 | p.family = AF_INET6; | |
882 | p.prefix = *addr; | |
883 | p.prefixlen = IPV6_MAX_BITLEN; | |
884 | ||
6aeb9e78 | 885 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 886 | { |
1eb8ef25 | 887 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 888 | { |
718e3744 | 889 | cp = connected->address; |
890 | ||
891 | if (cp->family == AF_INET6) | |
892 | if (prefix_match (cp, (struct prefix *)&p)) | |
f2345335 | 893 | { |
2bb913f5 | 894 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) |
f2345335 DS |
895 | { |
896 | if (ifindex == ifp->ifindex) | |
897 | return ifp; | |
898 | } | |
899 | else | |
900 | return ifp; | |
901 | } | |
718e3744 | 902 | } |
903 | } | |
904 | return NULL; | |
905 | } | |
906 | ||
907 | struct interface * | |
b892f1dd | 908 | if_lookup_by_ipv6_exact (struct in6_addr *addr, ifindex_t ifindex, vrf_id_t vrf_id) |
718e3744 | 909 | { |
52dc7ee6 | 910 | struct listnode *ifnode; |
911 | struct listnode *cnode; | |
718e3744 | 912 | struct interface *ifp; |
913 | struct connected *connected; | |
914 | struct prefix *cp; | |
915 | ||
6aeb9e78 | 916 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist(vrf_id), ifnode, ifp)) |
718e3744 | 917 | { |
1eb8ef25 | 918 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 919 | { |
718e3744 | 920 | cp = connected->address; |
921 | ||
922 | if (cp->family == AF_INET6) | |
923 | if (IPV6_ADDR_SAME (&cp->u.prefix6, addr)) | |
f2345335 DS |
924 | { |
925 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) | |
926 | { | |
927 | if (ifindex == ifp->ifindex) | |
928 | return ifp; | |
929 | } | |
930 | else | |
931 | return ifp; | |
932 | } | |
718e3744 | 933 | } |
934 | } | |
935 | return NULL; | |
936 | } | |
937 | ||
94f2b392 | 938 | static int |
718e3744 | 939 | if_get_ipv6_global (struct interface *ifp, struct in6_addr *addr) |
940 | { | |
52dc7ee6 | 941 | struct listnode *cnode; |
718e3744 | 942 | struct connected *connected; |
943 | struct prefix *cp; | |
944 | ||
1eb8ef25 | 945 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 946 | { |
718e3744 | 947 | cp = connected->address; |
948 | ||
949 | if (cp->family == AF_INET6) | |
950 | if (! IN6_IS_ADDR_LINKLOCAL (&cp->u.prefix6)) | |
951 | { | |
952 | memcpy (addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
953 | return 1; | |
954 | } | |
955 | } | |
956 | return 0; | |
957 | } | |
958 | ||
94f2b392 | 959 | static int |
718e3744 | 960 | if_get_ipv6_local (struct interface *ifp, struct in6_addr *addr) |
961 | { | |
52dc7ee6 | 962 | struct listnode *cnode; |
718e3744 | 963 | struct connected *connected; |
964 | struct prefix *cp; | |
965 | ||
1eb8ef25 | 966 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 967 | { |
718e3744 | 968 | cp = connected->address; |
969 | ||
970 | if (cp->family == AF_INET6) | |
971 | if (IN6_IS_ADDR_LINKLOCAL (&cp->u.prefix6)) | |
972 | { | |
973 | memcpy (addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
974 | return 1; | |
975 | } | |
976 | } | |
977 | return 0; | |
978 | } | |
718e3744 | 979 | |
6ee06fa9 PM |
980 | static int |
981 | if_get_ipv4_address (struct interface *ifp, struct in_addr *addr) | |
982 | { | |
983 | struct listnode *cnode; | |
984 | struct connected *connected; | |
985 | struct prefix *cp; | |
986 | ||
987 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) | |
988 | { | |
989 | cp = connected->address; | |
990 | if ((cp->family == AF_INET) && !ipv4_martian(&(cp->u.prefix4))) | |
991 | { | |
992 | *addr = cp->u.prefix4; | |
993 | return 1; | |
994 | } | |
995 | } | |
996 | return 0; | |
997 | } | |
998 | ||
718e3744 | 999 | int |
1000 | bgp_nexthop_set (union sockunion *local, union sockunion *remote, | |
1001 | struct bgp_nexthop *nexthop, struct peer *peer) | |
1002 | { | |
1003 | int ret = 0; | |
1004 | struct interface *ifp = NULL; | |
1005 | ||
1006 | memset (nexthop, 0, sizeof (struct bgp_nexthop)); | |
1007 | ||
1008 | if (!local) | |
1009 | return -1; | |
1010 | if (!remote) | |
1011 | return -1; | |
1012 | ||
1013 | if (local->sa.sa_family == AF_INET) | |
1014 | { | |
1015 | nexthop->v4 = local->sin.sin_addr; | |
2fb2f5cf | 1016 | if (peer->update_if) |
6aeb9e78 | 1017 | ifp = if_lookup_by_name_vrf (peer->update_if, peer->bgp->vrf_id); |
2fb2f5cf | 1018 | else |
6aeb9e78 | 1019 | ifp = if_lookup_by_ipv4_exact (&local->sin.sin_addr, peer->bgp->vrf_id); |
718e3744 | 1020 | } |
718e3744 | 1021 | if (local->sa.sa_family == AF_INET6) |
1022 | { | |
1023 | if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr)) | |
1024 | { | |
a80beece | 1025 | if (peer->conf_if || peer->ifname) |
322e5964 | 1026 | ifp = if_lookup_by_name_vrf (peer->conf_if ? peer->conf_if : peer->ifname, peer->bgp->vrf_id); |
718e3744 | 1027 | } |
2fb2f5cf | 1028 | else if (peer->update_if) |
6aeb9e78 | 1029 | ifp = if_lookup_by_name_vrf (peer->update_if, peer->bgp->vrf_id); |
718e3744 | 1030 | else |
f2345335 | 1031 | ifp = if_lookup_by_ipv6_exact (&local->sin6.sin6_addr, |
6aeb9e78 DS |
1032 | local->sin6.sin6_scope_id, |
1033 | peer->bgp->vrf_id); | |
718e3744 | 1034 | } |
718e3744 | 1035 | |
1036 | if (!ifp) | |
1037 | return -1; | |
1038 | ||
1039 | nexthop->ifp = ifp; | |
1040 | ||
e33a4880 | 1041 | /* IPv4 connection, fetch and store IPv6 local address(es) if any. */ |
718e3744 | 1042 | if (local->sa.sa_family == AF_INET) |
1043 | { | |
718e3744 | 1044 | /* IPv6 nexthop*/ |
1045 | ret = if_get_ipv6_global (ifp, &nexthop->v6_global); | |
1046 | ||
718e3744 | 1047 | if (!ret) |
003c1ba0 | 1048 | { |
1049 | /* There is no global nexthop. Use link-local address as both the | |
1050 | * global and link-local nexthop. In this scenario, the expectation | |
1051 | * for interop is that the network admin would use a route-map to | |
1052 | * specify the global IPv6 nexthop. | |
1053 | */ | |
1054 | if_get_ipv6_local (ifp, &nexthop->v6_global); | |
1055 | memcpy (&nexthop->v6_local, &nexthop->v6_global, | |
1056 | IPV6_MAX_BYTELEN); | |
1057 | } | |
718e3744 | 1058 | else |
1059 | if_get_ipv6_local (ifp, &nexthop->v6_local); | |
003c1ba0 | 1060 | |
6aeb9e78 | 1061 | if (if_lookup_by_ipv4 (&remote->sin.sin_addr, peer->bgp->vrf_id)) |
003c1ba0 | 1062 | peer->shared_network = 1; |
1063 | else | |
1064 | peer->shared_network = 0; | |
718e3744 | 1065 | } |
1066 | ||
e33a4880 | 1067 | /* IPv6 connection, fetch and store IPv4 local address if any. */ |
718e3744 | 1068 | if (local->sa.sa_family == AF_INET6) |
1069 | { | |
1070 | struct interface *direct = NULL; | |
1071 | ||
6ee06fa9 PM |
1072 | /* IPv4 nexthop. */ |
1073 | ret = if_get_ipv4_address(ifp, &nexthop->v4); | |
1074 | if (!ret && peer->local_id.s_addr) | |
718e3744 | 1075 | nexthop->v4 = peer->local_id; |
1076 | ||
1077 | /* Global address*/ | |
1078 | if (! IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr)) | |
1079 | { | |
1080 | memcpy (&nexthop->v6_global, &local->sin6.sin6_addr, | |
1081 | IPV6_MAX_BYTELEN); | |
1082 | ||
1083 | /* If directory connected set link-local address. */ | |
f2345335 | 1084 | direct = if_lookup_by_ipv6 (&remote->sin6.sin6_addr, |
6aeb9e78 | 1085 | remote->sin6.sin6_scope_id, peer->bgp->vrf_id); |
718e3744 | 1086 | if (direct) |
1087 | if_get_ipv6_local (ifp, &nexthop->v6_local); | |
1088 | } | |
1089 | else | |
1090 | /* Link-local address. */ | |
1091 | { | |
1092 | ret = if_get_ipv6_global (ifp, &nexthop->v6_global); | |
1093 | ||
1094 | /* If there is no global address. Set link-local address as | |
1095 | global. I know this break RFC specification... */ | |
b2b926d5 DS |
1096 | /* In this scenario, the expectation for interop is that the |
1097 | * network admin would use a route-map to specify the global | |
1098 | * IPv6 nexthop. | |
1099 | */ | |
718e3744 | 1100 | if (!ret) |
1101 | memcpy (&nexthop->v6_global, &local->sin6.sin6_addr, | |
1102 | IPV6_MAX_BYTELEN); | |
b2b926d5 DS |
1103 | /* Always set the link-local address */ |
1104 | memcpy (&nexthop->v6_local, &local->sin6.sin6_addr, | |
1105 | IPV6_MAX_BYTELEN); | |
718e3744 | 1106 | } |
718e3744 | 1107 | |
003c1ba0 | 1108 | if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr) || |
6aeb9e78 DS |
1109 | if_lookup_by_ipv6 (&remote->sin6.sin6_addr, remote->sin6.sin6_scope_id, |
1110 | peer->bgp->vrf_id)) | |
003c1ba0 | 1111 | peer->shared_network = 1; |
1112 | else | |
1113 | peer->shared_network = 0; | |
1114 | } | |
718e3744 | 1115 | |
1116 | /* KAME stack specific treatment. */ | |
1117 | #ifdef KAME | |
1118 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_global) | |
1119 | && IN6_LINKLOCAL_IFINDEX (nexthop->v6_global)) | |
1120 | { | |
1121 | SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_global, 0); | |
1122 | } | |
1123 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_local) | |
1124 | && IN6_LINKLOCAL_IFINDEX (nexthop->v6_local)) | |
1125 | { | |
1126 | SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_local, 0); | |
1127 | } | |
1128 | #endif /* KAME */ | |
e33a4880 | 1129 | |
1130 | /* If we have identified the local interface, there is no error for now. */ | |
1131 | return 0; | |
718e3744 | 1132 | } |
1133 | ||
73ac8160 DS |
1134 | static struct in6_addr * |
1135 | bgp_info_to_ipv6_nexthop (struct bgp_info *info) | |
1136 | { | |
1137 | struct in6_addr *nexthop = NULL; | |
1138 | ||
1139 | /* Only global address nexthop exists. */ | |
801a9bcc | 1140 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL) |
73ac8160 DS |
1141 | nexthop = &info->attr->extra->mp_nexthop_global; |
1142 | ||
1143 | /* If both global and link-local address present. */ | |
801a9bcc | 1144 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 | 1145 | { |
161995ea DS |
1146 | /* Check if route-map is set to prefer global over link-local */ |
1147 | if (info->attr->extra->mp_nexthop_prefer_global) | |
1148 | nexthop = &info->attr->extra->mp_nexthop_global; | |
73ac8160 | 1149 | else |
161995ea DS |
1150 | { |
1151 | /* Workaround for Cisco's nexthop bug. */ | |
1152 | if (IN6_IS_ADDR_UNSPECIFIED (&info->attr->extra->mp_nexthop_global) | |
1153 | && info->peer->su_remote->sa.sa_family == AF_INET6) | |
1154 | nexthop = &info->peer->su_remote->sin6.sin6_addr; | |
1155 | else | |
1156 | nexthop = &info->attr->extra->mp_nexthop_local; | |
1157 | } | |
73ac8160 DS |
1158 | } |
1159 | ||
1160 | return nexthop; | |
1161 | } | |
1162 | ||
1163 | static int | |
1164 | bgp_table_map_apply (struct route_map *map, struct prefix *p, | |
1165 | struct bgp_info *info) | |
1166 | { | |
1167 | if (route_map_apply(map, p, RMAP_BGP, info) != RMAP_DENYMATCH) | |
1168 | return 1; | |
1169 | ||
16286195 | 1170 | if (bgp_debug_zebra(p)) |
73ac8160 DS |
1171 | { |
1172 | if (p->family == AF_INET) | |
1173 | { | |
1174 | char buf[2][INET_ADDRSTRLEN]; | |
1175 | zlog_debug("Zebra rmap deny: IPv4 route %s/%d nexthop %s", | |
1176 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), | |
1177 | p->prefixlen, | |
1178 | inet_ntop(AF_INET, &info->attr->nexthop, buf[1], | |
1179 | sizeof(buf[1]))); | |
1180 | } | |
1181 | if (p->family == AF_INET6) | |
1182 | { | |
1183 | char buf[2][INET6_ADDRSTRLEN]; | |
1184 | zlog_debug("Zebra rmap deny: IPv6 route %s/%d nexthop %s", | |
1185 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), | |
1186 | p->prefixlen, | |
1187 | inet_ntop(AF_INET6, bgp_info_to_ipv6_nexthop(info), buf[1], | |
1188 | sizeof(buf[1]))); | |
1189 | } | |
1190 | } | |
1191 | return 0; | |
1192 | } | |
1193 | ||
718e3744 | 1194 | void |
73ac8160 DS |
1195 | bgp_zebra_announce (struct prefix *p, struct bgp_info *info, struct bgp *bgp, |
1196 | afi_t afi, safi_t safi) | |
718e3744 | 1197 | { |
0fc452dc | 1198 | u_int32_t flags; |
718e3744 | 1199 | u_char distance; |
1200 | struct peer *peer; | |
8196f13d JB |
1201 | struct bgp_info *mpinfo; |
1202 | size_t oldsize, newsize; | |
73ac8160 DS |
1203 | u_int32_t nhcount, metric; |
1204 | struct bgp_info local_info; | |
1205 | struct bgp_info *info_cp = &local_info; | |
dc9ffce8 | 1206 | route_tag_t tag; |
718e3744 | 1207 | |
ad4cbda1 | 1208 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't |
1209 | * know of this instance. | |
1210 | */ | |
1211 | if (!bgp_install_info_to_zebra (bgp)) | |
718e3744 | 1212 | return; |
1213 | ||
7076bb2f | 1214 | if ((p->family == AF_INET && |
6aeb9e78 | 1215 | !vrf_bitmap_check (zclient->redist[AFI_IP][ZEBRA_ROUTE_BGP], bgp->vrf_id)) |
7076bb2f | 1216 | || (p->family == AF_INET6 && |
6aeb9e78 | 1217 | !vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_BGP], bgp->vrf_id))) |
718e3744 | 1218 | return; |
1219 | ||
4a16ae86 DS |
1220 | if (bgp->main_zebra_update_hold) |
1221 | return; | |
1222 | ||
718e3744 | 1223 | flags = 0; |
1224 | peer = info->peer; | |
1225 | ||
0d9551dc DS |
1226 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1227 | tag = info->attr->extra->tag; | |
1228 | else | |
1229 | tag = 0; | |
1230 | ||
f992e2a9 DS |
1231 | /* When we create an aggregate route we must also install a Null0 route in |
1232 | * the RIB */ | |
1233 | if (info->sub_type == BGP_ROUTE_AGGREGATE) | |
1234 | SET_FLAG (flags, ZEBRA_FLAG_BLACKHOLE); | |
1235 | ||
1236 | if (peer->sort == BGP_PEER_IBGP || peer->sort == BGP_PEER_CONFED || | |
1237 | info->sub_type == BGP_ROUTE_AGGREGATE) | |
718e3744 | 1238 | { |
1239 | SET_FLAG (flags, ZEBRA_FLAG_IBGP); | |
1240 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); | |
1241 | } | |
1242 | ||
6d85b15b | 1243 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
907f92c8 DS |
1244 | || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) |
1245 | || bgp_flag_check(bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
1246 | ||
718e3744 | 1247 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); |
1248 | ||
431aa9f9 | 1249 | nhcount = 1 + bgp_info_mpath_count (info); |
8196f13d | 1250 | |
8a92a8a0 | 1251 | if (p->family == AF_INET && !BGP_ATTR_NEXTHOP_AFI_IP6(info->attr)) |
718e3744 | 1252 | { |
1253 | struct zapi_ipv4 api; | |
1254 | struct in_addr *nexthop; | |
73ac8160 DS |
1255 | char buf[2][INET_ADDRSTRLEN]; |
1256 | int valid_nh_count = 0; | |
718e3744 | 1257 | |
431aa9f9 DS |
1258 | /* resize nexthop buffer size if necessary */ |
1259 | if ((oldsize = stream_get_size (bgp_nexthop_buf)) < | |
1260 | (sizeof (struct in_addr *) * nhcount)) | |
1261 | { | |
1262 | newsize = (sizeof (struct in_addr *) * nhcount); | |
1263 | newsize = stream_resize (bgp_nexthop_buf, newsize); | |
1264 | if (newsize == oldsize) | |
1265 | { | |
1266 | zlog_err ("can't resize nexthop buffer"); | |
1267 | return; | |
1268 | } | |
1269 | } | |
1270 | stream_reset (bgp_nexthop_buf); | |
73ac8160 DS |
1271 | nexthop = NULL; |
1272 | ||
1273 | /* Metric is currently based on the best-path only. */ | |
1274 | metric = info->attr->med; | |
1275 | ||
1276 | if (bgp->table_map[afi][safi].name) | |
1277 | { | |
1278 | BGP_INFO_ATTR_BUF_INIT(); | |
1279 | ||
1280 | /* Copy info and attributes, so the route-map apply doesn't modify the | |
1281 | BGP route info. */ | |
1282 | BGP_INFO_ATTR_BUF_COPY(info, info_cp); | |
1283 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1284 | { | |
1285 | metric = info_cp->attr->med; | |
1286 | nexthop = &info_cp->attr->nexthop; | |
0d9551dc DS |
1287 | |
1288 | if (info_cp->attr->extra) | |
1289 | tag = info_cp->attr->extra->tag; | |
73ac8160 DS |
1290 | } |
1291 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1292 | } | |
1293 | else | |
1294 | { | |
1295 | nexthop = &info->attr->nexthop; | |
1296 | } | |
1297 | ||
1298 | if (nexthop) | |
1299 | { | |
1300 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in_addr *)); | |
1301 | valid_nh_count++; | |
1302 | } | |
431aa9f9 | 1303 | |
8196f13d | 1304 | for (mpinfo = bgp_info_mpath_first (info); mpinfo; |
73ac8160 DS |
1305 | mpinfo = bgp_info_mpath_next (mpinfo)) |
1306 | { | |
1307 | nexthop = NULL; | |
1308 | ||
1309 | if (bgp->table_map[afi][safi].name) | |
1310 | { | |
1311 | /* Copy info and attributes, so the route-map apply doesn't modify the | |
1312 | BGP route info. */ | |
1313 | BGP_INFO_ATTR_BUF_COPY(mpinfo, info_cp); | |
1314 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1315 | nexthop = &info_cp->attr->nexthop; | |
1316 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1317 | } | |
1318 | else | |
1319 | { | |
1320 | nexthop = &mpinfo->attr->nexthop; | |
1321 | } | |
1322 | ||
1323 | if (nexthop == NULL) | |
1324 | continue; | |
1325 | ||
1326 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in_addr *)); | |
1327 | valid_nh_count++; | |
1328 | } | |
718e3744 | 1329 | |
6aeb9e78 | 1330 | api.vrf_id = bgp->vrf_id; |
73ac8160 | 1331 | api.flags = flags; |
718e3744 | 1332 | api.type = ZEBRA_ROUTE_BGP; |
7c8ff89e | 1333 | api.instance = 0; |
718e3744 | 1334 | api.message = 0; |
5a616c08 | 1335 | api.safi = safi; |
718e3744 | 1336 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
f992e2a9 DS |
1337 | |
1338 | /* Note that this currently only applies to Null0 routes for aggregates. | |
1339 | * ZEBRA_FLAG_BLACKHOLE signals zapi_ipv4_route to encode a special | |
1340 | * BLACKHOLE nexthop. We want to set api.nexthop_num to zero since we | |
1341 | * do not want to also encode the 0.0.0.0 nexthop for the aggregate route. | |
1342 | */ | |
1343 | if (CHECK_FLAG(flags, ZEBRA_FLAG_BLACKHOLE)) | |
1344 | api.nexthop_num = 0; | |
1345 | else | |
1346 | api.nexthop_num = valid_nh_count; | |
1347 | ||
8196f13d | 1348 | api.nexthop = (struct in_addr **)STREAM_DATA (bgp_nexthop_buf); |
718e3744 | 1349 | api.ifindex_num = 0; |
1350 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
73ac8160 | 1351 | api.metric = metric; |
d2921c7a | 1352 | api.tag = 0; |
718e3744 | 1353 | |
0d9551dc DS |
1354 | if (tag) |
1355 | { | |
1356 | SET_FLAG (api.message, ZAPI_MESSAGE_TAG); | |
1357 | api.tag = tag; | |
1358 | } | |
1359 | ||
734b349e | 1360 | distance = bgp_distance_apply (p, info, afi, safi, bgp); |
718e3744 | 1361 | if (distance) |
1362 | { | |
1363 | SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE); | |
1364 | api.distance = distance; | |
1365 | } | |
a39275d7 | 1366 | |
16286195 | 1367 | if (bgp_debug_zebra(p)) |
73ac8160 DS |
1368 | { |
1369 | int i; | |
dc9ffce8 | 1370 | zlog_debug("Tx IPv4 route %s VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI |
73ac8160 | 1371 | " count %d", (valid_nh_count ? "add":"delete"), |
ad4cbda1 | 1372 | bgp->vrf_id, |
73ac8160 | 1373 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
0d9551dc | 1374 | p->prefixlen, api.metric, api.tag, api.nexthop_num); |
73ac8160 DS |
1375 | for (i = 0; i < api.nexthop_num; i++) |
1376 | zlog_debug(" IPv4 [nexthop %d] %s", i+1, | |
1377 | inet_ntop(AF_INET, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1378 | } | |
a39275d7 | 1379 | |
73ac8160 DS |
1380 | zapi_ipv4_route (valid_nh_count ? ZEBRA_IPV4_ROUTE_ADD: ZEBRA_IPV4_ROUTE_DELETE, |
1381 | zclient, (struct prefix_ipv4 *) p, &api); | |
718e3744 | 1382 | } |
431aa9f9 | 1383 | |
718e3744 | 1384 | /* We have to think about a IPv6 link-local address curse. */ |
8a92a8a0 DS |
1385 | if (p->family == AF_INET6 || |
1386 | (p->family == AF_INET && BGP_ATTR_NEXTHOP_AFI_IP6(info->attr))) | |
718e3744 | 1387 | { |
b892f1dd | 1388 | ifindex_t ifindex; |
718e3744 | 1389 | struct in6_addr *nexthop; |
1390 | struct zapi_ipv6 api; | |
431aa9f9 | 1391 | int valid_nh_count = 0; |
73ac8160 | 1392 | char buf[2][INET6_ADDRSTRLEN]; |
431aa9f9 DS |
1393 | |
1394 | /* resize nexthop buffer size if necessary */ | |
1395 | if ((oldsize = stream_get_size (bgp_nexthop_buf)) < | |
1396 | (sizeof (struct in6_addr *) * nhcount)) | |
1397 | { | |
1398 | newsize = (sizeof (struct in6_addr *) * nhcount); | |
1399 | newsize = stream_resize (bgp_nexthop_buf, newsize); | |
1400 | if (newsize == oldsize) | |
1401 | { | |
1402 | zlog_err ("can't resize nexthop buffer"); | |
1403 | return; | |
1404 | } | |
1405 | } | |
1406 | stream_reset (bgp_nexthop_buf); | |
1407 | ||
1408 | /* resize ifindices buffer size if necessary */ | |
1409 | if ((oldsize = stream_get_size (bgp_ifindices_buf)) < | |
1410 | (sizeof (unsigned int) * nhcount)) | |
1411 | { | |
1412 | newsize = (sizeof (unsigned int) * nhcount); | |
1413 | newsize = stream_resize (bgp_ifindices_buf, newsize); | |
1414 | if (newsize == oldsize) | |
1415 | { | |
1416 | zlog_err ("can't resize nexthop buffer"); | |
1417 | return; | |
1418 | } | |
1419 | } | |
1420 | stream_reset (bgp_ifindices_buf); | |
718e3744 | 1421 | |
1422 | ifindex = 0; | |
1423 | nexthop = NULL; | |
431aa9f9 | 1424 | |
fb982c25 | 1425 | assert (info->attr->extra); |
718e3744 | 1426 | |
73ac8160 DS |
1427 | /* Metric is currently based on the best-path only. */ |
1428 | metric = info->attr->med; | |
1429 | ||
1430 | if (bgp->table_map[afi][safi].name) | |
1431 | { | |
1432 | BGP_INFO_ATTR_BUF_INIT(); | |
718e3744 | 1433 | |
73ac8160 DS |
1434 | /* Copy info and attributes, so the route-map apply doesn't modify the |
1435 | BGP route info. */ | |
1436 | BGP_INFO_ATTR_BUF_COPY(info, info_cp); | |
1437 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1438 | { | |
1439 | metric = info_cp->attr->med; | |
1440 | nexthop = bgp_info_to_ipv6_nexthop(info_cp); | |
0d9551dc DS |
1441 | |
1442 | if (info_cp->attr->extra) | |
1443 | tag = info_cp->attr->extra->tag; | |
73ac8160 DS |
1444 | } |
1445 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1446 | } | |
1447 | else | |
1448 | { | |
1449 | nexthop = bgp_info_to_ipv6_nexthop(info); | |
1450 | } | |
718e3744 | 1451 | |
73ac8160 DS |
1452 | if (nexthop) |
1453 | { | |
801a9bcc | 1454 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
1455 | if (info->peer->nexthop.ifp) |
1456 | ifindex = info->peer->nexthop.ifp->ifindex; | |
1457 | ||
1458 | if (!ifindex) | |
ffd0c037 DS |
1459 | { |
1460 | if (info->peer->conf_if || info->peer->ifname) | |
1461 | ifindex = if_nametoindex (info->peer->conf_if ? info->peer->conf_if : info->peer->ifname); | |
1462 | else if (info->peer->nexthop.ifp) | |
1463 | ifindex = info->peer->nexthop.ifp->ifindex; | |
1464 | } | |
73ac8160 DS |
1465 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in6_addr *)); |
1466 | stream_put (bgp_ifindices_buf, &ifindex, sizeof (unsigned int)); | |
1467 | valid_nh_count++; | |
1468 | } | |
431aa9f9 DS |
1469 | |
1470 | for (mpinfo = bgp_info_mpath_first (info); mpinfo; | |
1471 | mpinfo = bgp_info_mpath_next (mpinfo)) | |
73ac8160 DS |
1472 | { |
1473 | ifindex = 0; | |
1474 | nexthop = NULL; | |
000830bd | 1475 | |
73ac8160 | 1476 | if (bgp->table_map[afi][safi].name) |
431aa9f9 | 1477 | { |
73ac8160 DS |
1478 | /* Copy info and attributes, so the route-map apply doesn't modify the |
1479 | BGP route info. */ | |
1480 | BGP_INFO_ATTR_BUF_COPY(mpinfo, info_cp); | |
1481 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1482 | nexthop = bgp_info_to_ipv6_nexthop(info_cp); | |
1483 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1484 | } | |
1485 | else | |
1486 | { | |
1487 | nexthop = bgp_info_to_ipv6_nexthop(mpinfo); | |
431aa9f9 | 1488 | } |
431aa9f9 | 1489 | |
73ac8160 DS |
1490 | if (nexthop == NULL) |
1491 | continue; | |
1492 | ||
801a9bcc | 1493 | if (mpinfo->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
1494 | if (mpinfo->peer->nexthop.ifp) |
1495 | ifindex = mpinfo->peer->nexthop.ifp->ifindex; | |
000830bd DS |
1496 | |
1497 | if (!ifindex) | |
ffd0c037 DS |
1498 | { |
1499 | if (mpinfo->peer->conf_if || mpinfo->peer->ifname) | |
322e5964 | 1500 | ifindex = ifname2ifindex (mpinfo->peer->conf_if ? mpinfo->peer->conf_if : mpinfo->peer->ifname); |
ffd0c037 DS |
1501 | else if (mpinfo->peer->nexthop.ifp) |
1502 | ifindex = mpinfo->peer->nexthop.ifp->ifindex; | |
1503 | } | |
73ac8160 DS |
1504 | if (ifindex == 0) |
1505 | continue; | |
431aa9f9 DS |
1506 | |
1507 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in6_addr *)); | |
1508 | stream_put (bgp_ifindices_buf, &ifindex, sizeof (unsigned int)); | |
1509 | valid_nh_count++; | |
73ac8160 | 1510 | } |
718e3744 | 1511 | |
1512 | /* Make Zebra API structure. */ | |
6aeb9e78 | 1513 | api.vrf_id = bgp->vrf_id; |
718e3744 | 1514 | api.flags = flags; |
1515 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1516 | api.instance = 0; |
718e3744 | 1517 | api.message = 0; |
c7ec179a | 1518 | api.safi = safi; |
718e3744 | 1519 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
f992e2a9 DS |
1520 | |
1521 | /* Note that this currently only applies to Null0 routes for aggregates. | |
1522 | * ZEBRA_FLAG_BLACKHOLE signals zapi_ipv6_route to encode a special | |
1523 | * BLACKHOLE nexthop. We want to set api.nexthop_num to zero since we | |
1524 | * do not want to also encode the :: nexthop for the aggregate route. | |
1525 | */ | |
1526 | if (CHECK_FLAG(flags, ZEBRA_FLAG_BLACKHOLE)) | |
1527 | api.nexthop_num = 0; | |
1528 | else | |
1529 | api.nexthop_num = valid_nh_count; | |
1530 | ||
431aa9f9 | 1531 | api.nexthop = (struct in6_addr **)STREAM_DATA (bgp_nexthop_buf); |
718e3744 | 1532 | SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX); |
431aa9f9 | 1533 | api.ifindex_num = valid_nh_count; |
b892f1dd | 1534 | api.ifindex = (ifindex_t *)STREAM_DATA (bgp_ifindices_buf); |
718e3744 | 1535 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); |
73ac8160 | 1536 | api.metric = metric; |
d2921c7a | 1537 | api.tag = 0; |
718e3744 | 1538 | |
0d9551dc DS |
1539 | if (tag) |
1540 | { | |
1541 | SET_FLAG (api.message, ZAPI_MESSAGE_TAG); | |
1542 | api.tag = tag; | |
1543 | } | |
1544 | ||
734b349e MZ |
1545 | distance = bgp_distance_apply (p, info, afi, safi, bgp); |
1546 | if (distance) | |
1547 | { | |
1548 | SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE); | |
1549 | api.distance = distance; | |
1550 | } | |
1551 | ||
8a92a8a0 | 1552 | if (p->family == AF_INET) |
73ac8160 | 1553 | { |
8a92a8a0 DS |
1554 | if (bgp_debug_zebra(p)) |
1555 | { | |
1556 | int i; | |
dc9ffce8 | 1557 | zlog_debug("Tx IPv4 route %s VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 1558 | valid_nh_count ? "add" : "delete", bgp->vrf_id, |
8a92a8a0 DS |
1559 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
1560 | p->prefixlen, api.metric, api.tag); | |
1561 | for (i = 0; i < api.nexthop_num; i++) | |
1562 | zlog_debug(" IPv6 [nexthop %d] %s", i+1, | |
1563 | inet_ntop(AF_INET6, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1564 | } | |
1565 | ||
1566 | if (valid_nh_count) | |
1567 | zapi_ipv4_route_ipv6_nexthop (ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD, | |
88177fe3 DS |
1568 | zclient, (struct prefix_ipv4 *) p, |
1569 | (struct zapi_ipv6 *)&api); | |
8a92a8a0 DS |
1570 | else |
1571 | zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, | |
88177fe3 | 1572 | zclient, (struct prefix_ipv4 *) p, (struct zapi_ipv4 *)&api); |
73ac8160 | 1573 | } |
8a92a8a0 DS |
1574 | else |
1575 | { | |
1576 | if (bgp_debug_zebra(p)) | |
1577 | { | |
1578 | int i; | |
dc9ffce8 | 1579 | zlog_debug("Tx IPv6 route %s VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 1580 | valid_nh_count ? "add" : "delete", bgp->vrf_id, |
8a92a8a0 DS |
1581 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), |
1582 | p->prefixlen, api.metric, api.tag); | |
1583 | for (i = 0; i < api.nexthop_num; i++) | |
1584 | zlog_debug(" IPv6 [nexthop %d] %s", i+1, | |
1585 | inet_ntop(AF_INET6, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1586 | } | |
a39275d7 | 1587 | |
8a92a8a0 DS |
1588 | zapi_ipv6_route (valid_nh_count ? |
1589 | ZEBRA_IPV6_ROUTE_ADD : ZEBRA_IPV6_ROUTE_DELETE, | |
1590 | zclient, (struct prefix_ipv6 *) p, &api); | |
1591 | } | |
718e3744 | 1592 | } |
718e3744 | 1593 | } |
1594 | ||
73ac8160 DS |
1595 | /* Announce all routes of a table to zebra */ |
1596 | void | |
1597 | bgp_zebra_announce_table (struct bgp *bgp, afi_t afi, safi_t safi) | |
1598 | { | |
1599 | struct bgp_node *rn; | |
1600 | struct bgp_table *table; | |
1601 | struct bgp_info *ri; | |
1602 | ||
ad4cbda1 | 1603 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't |
1604 | * know of this instance. | |
1605 | */ | |
1606 | if (!bgp_install_info_to_zebra (bgp)) | |
1607 | return; | |
1608 | ||
73ac8160 | 1609 | table = bgp->rib[afi][safi]; |
4a16ae86 | 1610 | if (!table) return; |
73ac8160 DS |
1611 | |
1612 | for (rn = bgp_table_top (table); rn; rn = bgp_route_next (rn)) | |
1613 | for (ri = rn->info; ri; ri = ri->next) | |
1614 | if (CHECK_FLAG (ri->flags, BGP_INFO_SELECTED) | |
1615 | && ri->type == ZEBRA_ROUTE_BGP | |
1616 | && ri->sub_type == BGP_ROUTE_NORMAL) | |
1617 | bgp_zebra_announce (&rn->p, ri, bgp, afi, safi); | |
1618 | } | |
1619 | ||
718e3744 | 1620 | void |
5a616c08 | 1621 | bgp_zebra_withdraw (struct prefix *p, struct bgp_info *info, safi_t safi) |
718e3744 | 1622 | { |
0fc452dc | 1623 | u_int32_t flags; |
718e3744 | 1624 | struct peer *peer; |
1625 | ||
6aeb9e78 | 1626 | peer = info->peer; |
ad4cbda1 | 1627 | assert(peer); |
1628 | ||
1629 | /* Don't try to install if we're not connected to Zebra or Zebra doesn't | |
1630 | * know of this instance. | |
1631 | */ | |
1632 | if (!bgp_install_info_to_zebra (peer->bgp)) | |
1633 | return; | |
6aeb9e78 | 1634 | |
7076bb2f | 1635 | if ((p->family == AF_INET && |
6aeb9e78 | 1636 | !vrf_bitmap_check (zclient->redist[AFI_IP][ZEBRA_ROUTE_BGP], peer->bgp->vrf_id)) |
7076bb2f | 1637 | || (p->family == AF_INET6 && |
6aeb9e78 | 1638 | !vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_BGP], peer->bgp->vrf_id))) |
718e3744 | 1639 | return; |
1640 | ||
718e3744 | 1641 | flags = 0; |
1642 | ||
6d85b15b | 1643 | if (peer->sort == BGP_PEER_IBGP) |
718e3744 | 1644 | { |
1645 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); | |
1646 | SET_FLAG (flags, ZEBRA_FLAG_IBGP); | |
1647 | } | |
1648 | ||
6d85b15b | 1649 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
907f92c8 DS |
1650 | || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) |
1651 | || bgp_flag_check(peer->bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
718e3744 | 1652 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); |
1653 | ||
1654 | if (p->family == AF_INET) | |
1655 | { | |
1656 | struct zapi_ipv4 api; | |
718e3744 | 1657 | |
6aeb9e78 | 1658 | api.vrf_id = peer->bgp->vrf_id; |
718e3744 | 1659 | api.flags = flags; |
718e3744 | 1660 | |
1661 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1662 | api.instance = 0; |
718e3744 | 1663 | api.message = 0; |
5a616c08 | 1664 | api.safi = safi; |
718e3744 | 1665 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
76145957 DS |
1666 | api.nexthop_num = 0; |
1667 | api.nexthop = NULL; | |
718e3744 | 1668 | api.ifindex_num = 0; |
1669 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
1670 | api.metric = info->attr->med; | |
d2921c7a | 1671 | api.tag = 0; |
718e3744 | 1672 | |
0d9551dc DS |
1673 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1674 | { | |
1675 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1676 | api.tag = info->attr->extra->tag; | |
1677 | } | |
1678 | ||
16286195 | 1679 | if (bgp_debug_zebra(p)) |
a39275d7 AS |
1680 | { |
1681 | char buf[2][INET_ADDRSTRLEN]; | |
dc9ffce8 | 1682 | zlog_debug("Tx IPv4 route delete VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 1683 | peer->bgp->vrf_id, |
a39275d7 | 1684 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
fbf288a5 | 1685 | p->prefixlen, api.metric, api.tag); |
a39275d7 AS |
1686 | } |
1687 | ||
0a589359 | 1688 | zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, zclient, |
1689 | (struct prefix_ipv4 *) p, &api); | |
718e3744 | 1690 | } |
718e3744 | 1691 | /* We have to think about a IPv6 link-local address curse. */ |
1692 | if (p->family == AF_INET6) | |
1693 | { | |
1694 | struct zapi_ipv6 api; | |
fb982c25 PJ |
1695 | |
1696 | assert (info->attr->extra); | |
322e5964 | 1697 | |
6aeb9e78 | 1698 | api.vrf_id = peer->bgp->vrf_id; |
718e3744 | 1699 | api.flags = flags; |
1700 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1701 | api.instance = 0; |
718e3744 | 1702 | api.message = 0; |
c7ec179a | 1703 | api.safi = safi; |
718e3744 | 1704 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
fbf288a5 DS |
1705 | api.nexthop_num = 0; |
1706 | api.nexthop = NULL; | |
1707 | api.ifindex_num = 0; | |
718e3744 | 1708 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); |
1709 | api.metric = info->attr->med; | |
d2921c7a | 1710 | api.tag = 0; |
718e3744 | 1711 | |
0d9551dc DS |
1712 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1713 | { | |
1714 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1715 | api.tag = info->attr->extra->tag; | |
1716 | } | |
1717 | ||
16286195 | 1718 | if (bgp_debug_zebra(p)) |
a39275d7 AS |
1719 | { |
1720 | char buf[2][INET6_ADDRSTRLEN]; | |
dc9ffce8 | 1721 | zlog_debug("Tx IPv6 route delete VRF %u %s/%d metric %u tag %"ROUTE_TAG_PRI, |
ad4cbda1 | 1722 | peer->bgp->vrf_id, |
a39275d7 | 1723 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), |
fbf288a5 | 1724 | p->prefixlen, api.metric, api.tag); |
a39275d7 AS |
1725 | } |
1726 | ||
0a589359 | 1727 | zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, |
1728 | (struct prefix_ipv6 *) p, &api); | |
718e3744 | 1729 | } |
718e3744 | 1730 | } |
56c1f7d8 | 1731 | |
7c8ff89e DS |
1732 | struct bgp_redist * |
1733 | bgp_redist_lookup (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1734 | { | |
1735 | struct list *red_list; | |
1736 | struct listnode *node; | |
1737 | struct bgp_redist *red; | |
1738 | ||
1739 | red_list = bgp->redist[afi][type]; | |
1740 | if (!red_list) | |
1741 | return(NULL); | |
1742 | ||
1743 | for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) | |
1744 | if (red->instance == instance) | |
1745 | return red; | |
1746 | ||
1747 | return NULL; | |
1748 | } | |
1749 | ||
1750 | struct bgp_redist * | |
1751 | bgp_redist_add (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1752 | { | |
1753 | struct list *red_list; | |
1754 | struct bgp_redist *red; | |
1755 | ||
1756 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1757 | if (red) | |
1758 | return red; | |
1759 | ||
1760 | if (!bgp->redist[afi][type]) | |
1761 | bgp->redist[afi][type] = list_new(); | |
1762 | ||
1763 | red_list = bgp->redist[afi][type]; | |
6e919709 | 1764 | red = (struct bgp_redist *)XCALLOC(MTYPE_BGP_REDIST, sizeof(struct bgp_redist)); |
7c8ff89e DS |
1765 | red->instance = instance; |
1766 | ||
1767 | listnode_add(red_list, red); | |
1768 | ||
1769 | return red; | |
1770 | } | |
1771 | ||
1772 | static void | |
1773 | bgp_redist_del (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1774 | { | |
1775 | struct bgp_redist *red; | |
1776 | ||
1777 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1778 | ||
1779 | if (red) | |
1780 | { | |
1781 | listnode_delete(bgp->redist[afi][type], red); | |
37d361e7 | 1782 | XFREE (MTYPE_BGP_REDIST, red); |
7c8ff89e DS |
1783 | if (!bgp->redist[afi][type]->count) |
1784 | { | |
1785 | list_free(bgp->redist[afi][type]); | |
1786 | bgp->redist[afi][type] = NULL; | |
1787 | } | |
1788 | } | |
1789 | } | |
6b0655a2 | 1790 | |
718e3744 | 1791 | /* Other routes redistribution into BGP. */ |
1792 | int | |
6aeb9e78 | 1793 | bgp_redistribute_set (struct bgp *bgp, afi_t afi, int type, u_short instance) |
718e3744 | 1794 | { |
718e3744 | 1795 | |
1796 | /* Return if already redistribute flag is set. */ | |
7076bb2f FL |
1797 | if (instance) |
1798 | { | |
1799 | if (redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1800 | return CMD_WARNING; | |
718e3744 | 1801 | |
7076bb2f FL |
1802 | redist_add_instance(&zclient->mi_redist[afi][type], instance); |
1803 | } | |
1804 | else | |
1805 | { | |
6aeb9e78 | 1806 | if (vrf_bitmap_check (zclient->redist[afi][type], bgp->vrf_id)) |
7076bb2f FL |
1807 | return CMD_WARNING; |
1808 | ||
65efcfce LB |
1809 | #if ENABLE_BGP_VNC |
1810 | if (bgp->vrf_id == VRF_DEFAULT && | |
1811 | type == ZEBRA_ROUTE_VNC_DIRECT) { | |
1812 | vnc_export_bgp_enable(bgp, afi); /* only enables if mode bits cfg'd */ | |
1813 | } | |
1814 | #endif | |
1815 | ||
6aeb9e78 | 1816 | vrf_bitmap_set (zclient->redist[afi][type], bgp->vrf_id); |
7076bb2f | 1817 | } |
718e3744 | 1818 | |
ad4cbda1 | 1819 | /* Don't try to register if we're not connected to Zebra or Zebra doesn't |
1820 | * know of this instance. | |
1821 | */ | |
1822 | if (!bgp_install_info_to_zebra (bgp)) | |
718e3744 | 1823 | return CMD_WARNING; |
a39275d7 | 1824 | |
16286195 | 1825 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 1826 | zlog_debug("Tx redistribute add VRF %u afi %d %s %d", |
1827 | bgp->vrf_id, afi, | |
8bb0831e | 1828 | zebra_route_string(type), instance); |
518f0eb1 | 1829 | |
718e3744 | 1830 | /* Send distribute add message to zebra. */ |
7076bb2f | 1831 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, |
6aeb9e78 | 1832 | instance, bgp->vrf_id); |
718e3744 | 1833 | |
1834 | return CMD_SUCCESS; | |
1835 | } | |
1836 | ||
518f0eb1 | 1837 | int |
7c8ff89e | 1838 | bgp_redistribute_resend (struct bgp *bgp, afi_t afi, int type, u_short instance) |
518f0eb1 | 1839 | { |
ad4cbda1 | 1840 | /* Don't try to send if we're not connected to Zebra or Zebra doesn't |
1841 | * know of this instance. | |
1842 | */ | |
1843 | if (!bgp_install_info_to_zebra (bgp)) | |
518f0eb1 DS |
1844 | return -1; |
1845 | ||
16286195 | 1846 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 1847 | zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d", |
1848 | bgp->vrf_id, afi, | |
8bb0831e | 1849 | zebra_route_string(type), instance); |
518f0eb1 DS |
1850 | |
1851 | /* Send distribute add message to zebra. */ | |
7076bb2f | 1852 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, |
9585bba7 | 1853 | instance, bgp->vrf_id); |
7076bb2f | 1854 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, |
9585bba7 | 1855 | instance, bgp->vrf_id); |
518f0eb1 DS |
1856 | |
1857 | return 0; | |
1858 | } | |
1859 | ||
718e3744 | 1860 | /* Redistribute with route-map specification. */ |
1861 | int | |
7c8ff89e | 1862 | bgp_redistribute_rmap_set (struct bgp_redist *red, const char *name) |
718e3744 | 1863 | { |
7c8ff89e DS |
1864 | if (red->rmap.name |
1865 | && (strcmp (red->rmap.name, name) == 0)) | |
718e3744 | 1866 | return 0; |
1867 | ||
7c8ff89e | 1868 | if (red->rmap.name) |
6e919709 DS |
1869 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); |
1870 | red->rmap.name = XSTRDUP(MTYPE_ROUTE_MAP_NAME, name); | |
7c8ff89e | 1871 | red->rmap.map = route_map_lookup_by_name (name); |
718e3744 | 1872 | |
1873 | return 1; | |
1874 | } | |
1875 | ||
1876 | /* Redistribute with metric specification. */ | |
1877 | int | |
caf958b4 DS |
1878 | bgp_redistribute_metric_set (struct bgp *bgp, struct bgp_redist *red, afi_t afi, |
1879 | int type, u_int32_t metric) | |
718e3744 | 1880 | { |
caf958b4 DS |
1881 | struct bgp_node *rn; |
1882 | struct bgp_info *ri; | |
1883 | ||
7c8ff89e DS |
1884 | if (red->redist_metric_flag |
1885 | && red->redist_metric == metric) | |
718e3744 | 1886 | return 0; |
1887 | ||
7c8ff89e DS |
1888 | red->redist_metric_flag = 1; |
1889 | red->redist_metric = metric; | |
718e3744 | 1890 | |
711093b5 | 1891 | for (rn = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); rn; rn = bgp_route_next(rn)) |
1892 | { | |
1893 | for (ri = rn->info; ri; ri = ri->next) | |
1894 | { | |
1895 | if (ri->sub_type == BGP_ROUTE_REDISTRIBUTE && | |
1896 | ri->type == type && | |
1897 | ri->instance == red->instance) | |
1898 | { | |
1899 | struct attr *old_attr; | |
1900 | struct attr new_attr; | |
1901 | struct attr_extra new_extra; | |
1902 | ||
1903 | new_attr.extra = &new_extra; | |
1904 | bgp_attr_dup (&new_attr, ri->attr); | |
1905 | new_attr.med = red->redist_metric; | |
1906 | old_attr = ri->attr; | |
1907 | ri->attr = bgp_attr_intern (&new_attr); | |
1908 | bgp_attr_unintern (&old_attr); | |
1909 | ||
1910 | bgp_info_set_flag(rn, ri, BGP_INFO_ATTR_CHANGED); | |
1911 | bgp_process(bgp, rn, afi, SAFI_UNICAST); | |
1912 | } | |
1913 | } | |
caf958b4 | 1914 | } |
caf958b4 | 1915 | |
718e3744 | 1916 | return 1; |
1917 | } | |
1918 | ||
1919 | /* Unset redistribution. */ | |
1920 | int | |
6aeb9e78 | 1921 | bgp_redistribute_unreg (struct bgp *bgp, afi_t afi, int type, u_short instance) |
718e3744 | 1922 | { |
7c8ff89e DS |
1923 | struct bgp_redist *red; |
1924 | ||
1925 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1926 | if (!red) | |
1927 | return CMD_SUCCESS; | |
718e3744 | 1928 | |
718e3744 | 1929 | /* Return if zebra connection is disabled. */ |
7076bb2f FL |
1930 | if (instance) |
1931 | { | |
1932 | if (!redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1933 | return CMD_WARNING; | |
1934 | redist_del_instance(&zclient->mi_redist[afi][type], instance); | |
1935 | } | |
1936 | else | |
1937 | { | |
6aeb9e78 | 1938 | if (! vrf_bitmap_check (zclient->redist[afi][type], bgp->vrf_id)) |
7076bb2f | 1939 | return CMD_WARNING; |
6aeb9e78 | 1940 | vrf_bitmap_unset (zclient->redist[afi][type], bgp->vrf_id); |
7076bb2f | 1941 | } |
718e3744 | 1942 | |
65efcfce LB |
1943 | #if ENABLE_BGP_VNC |
1944 | if (bgp->vrf_id == VRF_DEFAULT && | |
1945 | type == ZEBRA_ROUTE_VNC_DIRECT) { | |
1946 | vnc_export_bgp_disable(bgp, afi); | |
1947 | } | |
1948 | #endif | |
1949 | ||
ad4cbda1 | 1950 | if (bgp_install_info_to_zebra (bgp)) |
a39275d7 AS |
1951 | { |
1952 | /* Send distribute delete message to zebra. */ | |
16286195 | 1953 | if (BGP_DEBUG (zebra, ZEBRA)) |
ad4cbda1 | 1954 | zlog_debug("Tx redistribute del VRF %u afi %d %s %d", |
1955 | bgp->vrf_id, afi, zebra_route_string(type), instance); | |
7076bb2f | 1956 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, instance, |
6aeb9e78 | 1957 | bgp->vrf_id); |
a39275d7 | 1958 | } |
718e3744 | 1959 | |
1960 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
7c8ff89e | 1961 | bgp_redistribute_withdraw (bgp, afi, type, instance); |
718e3744 | 1962 | |
1963 | return CMD_SUCCESS; | |
1964 | } | |
1965 | ||
6aeb9e78 DS |
1966 | /* Unset redistribution. */ |
1967 | int | |
1968 | bgp_redistribute_unset (struct bgp *bgp, afi_t afi, int type, u_short instance) | |
1969 | { | |
1970 | struct bgp_redist *red; | |
1971 | ||
1972 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1973 | if (!red) | |
1974 | return CMD_SUCCESS; | |
1975 | ||
1976 | bgp_redistribute_unreg(bgp, afi, type, instance); | |
1977 | ||
1978 | /* Unset route-map. */ | |
1979 | if (red->rmap.name) | |
1980 | XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name); | |
1981 | red->rmap.name = NULL; | |
1982 | red->rmap.map = NULL; | |
1983 | ||
1984 | /* Unset metric. */ | |
1985 | red->redist_metric_flag = 0; | |
1986 | red->redist_metric = 0; | |
1987 | ||
1988 | bgp_redist_del(bgp, afi, type, instance); | |
1989 | ||
1990 | return CMD_SUCCESS; | |
1991 | } | |
1992 | ||
eb117f29 SK |
1993 | /* Update redistribute vrf bitmap during triggers like |
1994 | restart networking or delete/add VRFs */ | |
1995 | void | |
1996 | bgp_update_redist_vrf_bitmaps (struct bgp *bgp, vrf_id_t old_vrf_id) | |
1997 | { | |
1998 | int i; | |
1999 | afi_t afi; | |
2000 | ||
2001 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
2002 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
2003 | if (vrf_bitmap_check (zclient->redist[afi][i], old_vrf_id)) | |
2004 | { | |
2005 | vrf_bitmap_unset (zclient->redist[afi][i], old_vrf_id); | |
2006 | vrf_bitmap_set (zclient->redist[afi][i], bgp->vrf_id); | |
2007 | } | |
2008 | return; | |
2009 | } | |
2010 | ||
718e3744 | 2011 | void |
94f2b392 | 2012 | bgp_zclient_reset (void) |
718e3744 | 2013 | { |
2014 | zclient_reset (zclient); | |
2015 | } | |
2016 | ||
ad4cbda1 | 2017 | /* Register this instance with Zebra. Invoked upon connect (for |
2018 | * default instance) and when other VRFs are learnt (or created and | |
2019 | * already learnt). | |
2020 | */ | |
2021 | void | |
2022 | bgp_zebra_instance_register (struct bgp *bgp) | |
2023 | { | |
2024 | /* Don't try to register if we're not connected to Zebra */ | |
4c2620da | 2025 | if (!zclient || zclient->sock < 0) |
ad4cbda1 | 2026 | return; |
2027 | ||
2028 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2029 | zlog_debug("Registering VRF %u", bgp->vrf_id); | |
2030 | ||
2031 | /* Register for router-id, interfaces, redistributed routes. */ | |
2032 | zclient_send_reg_requests (zclient, bgp->vrf_id); | |
2033 | } | |
2034 | ||
2035 | /* Deregister this instance with Zebra. Invoked upon the instance | |
2036 | * being deleted (default or VRF) and it is already registered. | |
2037 | */ | |
2038 | void | |
2039 | bgp_zebra_instance_deregister (struct bgp *bgp) | |
2040 | { | |
2041 | /* Don't try to deregister if we're not connected to Zebra */ | |
2042 | if (zclient->sock < 0) | |
2043 | return; | |
2044 | ||
2045 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2046 | zlog_debug("Deregistering VRF %u", bgp->vrf_id); | |
2047 | ||
2048 | /* Deregister for router-id, interfaces, redistributed routes. */ | |
2049 | zclient_send_dereg_requests (zclient, bgp->vrf_id); | |
2050 | } | |
2051 | ||
4a04e5f7 | 2052 | void |
2053 | bgp_zebra_initiate_radv (struct bgp *bgp, struct peer *peer) | |
2054 | { | |
5c81b96a | 2055 | int ra_interval = BGP_UNNUM_DEFAULT_RA_INTERVAL; |
2056 | ||
4a04e5f7 | 2057 | /* Don't try to initiate if we're not connected to Zebra */ |
2058 | if (zclient->sock < 0) | |
2059 | return; | |
2060 | ||
2061 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2062 | zlog_debug("%u: Initiating RA for peer %s", bgp->vrf_id, peer->host); | |
2063 | ||
5c81b96a | 2064 | zclient_send_interface_radv_req (zclient, bgp->vrf_id, peer->ifp, 1, ra_interval); |
4a04e5f7 | 2065 | } |
2066 | ||
2067 | void | |
2068 | bgp_zebra_terminate_radv (struct bgp *bgp, struct peer *peer) | |
2069 | { | |
2070 | /* Don't try to terminate if we're not connected to Zebra */ | |
2071 | if (zclient->sock < 0) | |
2072 | return; | |
2073 | ||
2074 | if (BGP_DEBUG (zebra, ZEBRA)) | |
2075 | zlog_debug("%u: Terminating RA for peer %s", bgp->vrf_id, peer->host); | |
2076 | ||
5c81b96a | 2077 | zclient_send_interface_radv_req (zclient, bgp->vrf_id, peer->ifp, 0, 0); |
4a04e5f7 | 2078 | } |
2079 | ||
ad4cbda1 | 2080 | /* BGP has established connection with Zebra. */ |
7076bb2f FL |
2081 | static void |
2082 | bgp_zebra_connected (struct zclient *zclient) | |
2083 | { | |
6aeb9e78 | 2084 | struct bgp *bgp; |
7076bb2f | 2085 | |
afbb1c59 LB |
2086 | zclient_num_connects++; /* increment even if not responding */ |
2087 | ||
ad4cbda1 | 2088 | /* At this point, we may or may not have BGP instances configured, but |
2089 | * we're only interested in the default VRF (others wouldn't have learnt | |
2090 | * the VRF from Zebra yet.) | |
2091 | */ | |
2092 | bgp = bgp_get_default(); | |
2093 | if (!bgp) | |
2094 | return; | |
2095 | ||
2096 | bgp_zebra_instance_register (bgp); | |
2097 | ||
2376c3f2 | 2098 | /* Send the client registration */ |
2099 | bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER); | |
2100 | ||
ad4cbda1 | 2101 | /* TODO - What if we have peers and networks configured, do we have to |
2102 | * kick-start them? | |
2103 | */ | |
7076bb2f FL |
2104 | } |
2105 | ||
6aeb9e78 | 2106 | |
718e3744 | 2107 | void |
4140ca4d | 2108 | bgp_zebra_init (struct thread_master *master) |
718e3744 | 2109 | { |
afbb1c59 LB |
2110 | zclient_num_connects = 0; |
2111 | ||
718e3744 | 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 | } | |
afbb1c59 LB |
2146 | |
2147 | int | |
2148 | bgp_zebra_num_connects(void) | |
2149 | { | |
2150 | return zclient_num_connects; | |
2151 | } |