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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" |
718e3744 | 33 | |
34 | #include "bgpd/bgpd.h" | |
35 | #include "bgpd/bgp_route.h" | |
36 | #include "bgpd/bgp_attr.h" | |
37 | #include "bgpd/bgp_nexthop.h" | |
38 | #include "bgpd/bgp_zebra.h" | |
39 | #include "bgpd/bgp_fsm.h" | |
a39275d7 | 40 | #include "bgpd/bgp_debug.h" |
8196f13d | 41 | #include "bgpd/bgp_mpath.h" |
fb018d25 | 42 | #include "bgpd/bgp_nexthop.h" |
ffd0c037 | 43 | #include "bgpd/bgp_nht.h" |
6b0655a2 | 44 | |
718e3744 | 45 | /* All information about zebra. */ |
228da428 | 46 | struct zclient *zclient = NULL; |
18a6dce6 | 47 | struct in_addr router_id_zebra; |
718e3744 | 48 | |
8196f13d JB |
49 | /* Growable buffer for nexthops sent to zebra */ |
50 | struct stream *bgp_nexthop_buf = NULL; | |
431aa9f9 | 51 | struct stream *bgp_ifindices_buf = NULL; |
8196f13d | 52 | |
73ac8160 DS |
53 | /* These array buffers are used in making a copy of the attributes for |
54 | route-map apply. Arrays are being used here to minimize mallocs and | |
55 | frees for the temporary copy of the attributes. | |
56 | Given the zapi api expects the nexthop buffer to contain pointer to | |
57 | pointers for nexthops, we couldnt have used a single nexthop variable | |
58 | on the stack, hence we had two options: | |
59 | 1. maintain a linked-list and free it after zapi_*_route call | |
60 | 2. use an array to avoid number of mallocs. | |
61 | Number of supported next-hops are finite, use of arrays should be ok. */ | |
62 | struct attr attr_cp[BGP_MAXIMUM_MAXPATHS]; | |
63 | struct attr_extra attr_extra_cp[BGP_MAXIMUM_MAXPATHS]; | |
64 | int attr_index = 0; | |
65 | ||
66 | /* Once per address-family initialization of the attribute array */ | |
67 | #define BGP_INFO_ATTR_BUF_INIT()\ | |
68 | do {\ | |
69 | memset(attr_cp, 0, BGP_MAXIMUM_MAXPATHS * sizeof(struct attr));\ | |
70 | memset(attr_extra_cp, 0, BGP_MAXIMUM_MAXPATHS * sizeof(struct attr_extra));\ | |
71 | attr_index = 0;\ | |
72 | } while (0) | |
73 | ||
74 | #define BGP_INFO_ATTR_BUF_COPY(info_src, info_dst)\ | |
75 | do { \ | |
76 | *info_dst = *info_src; \ | |
77 | assert(attr_index != BGP_MAXIMUM_MAXPATHS);\ | |
78 | attr_cp[attr_index].extra = &attr_extra_cp[attr_index]; \ | |
79 | bgp_attr_dup (&attr_cp[attr_index], info_src->attr); \ | |
80 | bgp_attr_deep_dup (&attr_cp[attr_index], info_src->attr); \ | |
81 | info_dst->attr = &attr_cp[attr_index]; \ | |
82 | attr_index++;\ | |
83 | } while (0) | |
84 | ||
85 | #define BGP_INFO_ATTR_BUF_FREE(info) \ | |
86 | do { \ | |
87 | bgp_attr_deep_free(info->attr); \ | |
88 | } while (0) | |
89 | ||
18a6dce6 | 90 | /* Router-id update message from zebra. */ |
94f2b392 | 91 | static int |
18a6dce6 | 92 | bgp_router_id_update (int command, struct zclient *zclient, zebra_size_t length) |
718e3744 | 93 | { |
18a6dce6 | 94 | struct prefix router_id; |
1eb8ef25 | 95 | struct listnode *node, *nnode; |
18a6dce6 | 96 | struct bgp *bgp; |
718e3744 | 97 | |
18a6dce6 | 98 | zebra_router_id_update_read(zclient->ibuf,&router_id); |
a39275d7 | 99 | |
16286195 | 100 | if (BGP_DEBUG (zebra, ZEBRA)) |
a39275d7 AS |
101 | { |
102 | char buf[128]; | |
103 | prefix2str(&router_id, buf, sizeof(buf)); | |
104 | zlog_debug("Zebra rcvd: router id update %s", buf); | |
105 | } | |
106 | ||
18a6dce6 | 107 | router_id_zebra = router_id.u.prefix4; |
718e3744 | 108 | |
1eb8ef25 | 109 | for (ALL_LIST_ELEMENTS (bm->bgp, node, nnode, bgp)) |
718e3744 | 110 | { |
18a6dce6 | 111 | if (!bgp->router_id_static.s_addr) |
1eb8ef25 | 112 | bgp_router_id_set (bgp, &router_id.u.prefix4); |
718e3744 | 113 | } |
18a6dce6 | 114 | |
718e3744 | 115 | return 0; |
116 | } | |
117 | ||
fb018d25 DS |
118 | /* Nexthop update message from zebra. */ |
119 | static int | |
120 | bgp_read_nexthop_update (int command, struct zclient *zclient, | |
121 | zebra_size_t length) | |
122 | { | |
078430f6 DS |
123 | bgp_parse_nexthop_update(command); |
124 | return 0; | |
125 | } | |
126 | ||
127 | static int | |
128 | bgp_read_import_check_update(int command, struct zclient *zclient, | |
129 | zebra_size_t length) | |
130 | { | |
131 | bgp_parse_nexthop_update(command); | |
fb018d25 DS |
132 | return 0; |
133 | } | |
134 | ||
a80beece DS |
135 | static void |
136 | bgp_nbr_connected_add (struct nbr_connected *ifc) | |
137 | { | |
138 | struct listnode *node, *nnode, *mnode; | |
139 | struct bgp *bgp; | |
140 | struct peer *peer; | |
141 | ||
142 | for (ALL_LIST_ELEMENTS_RO (bm->bgp, mnode, bgp)) | |
143 | { | |
144 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) | |
145 | { | |
146 | if (peer->conf_if && (strcmp (peer->conf_if, ifc->ifp->name) == 0)) | |
147 | { | |
148 | if (peer_active(peer)) | |
149 | BGP_EVENT_ADD (peer, BGP_Stop); | |
150 | BGP_EVENT_ADD (peer, BGP_Start); | |
151 | } | |
152 | } | |
153 | } | |
154 | } | |
155 | ||
156 | static void | |
157 | bgp_nbr_connected_delete (struct nbr_connected *ifc) | |
158 | { | |
159 | struct listnode *node, *nnode, *mnode; | |
160 | struct bgp *bgp; | |
161 | struct peer *peer; | |
162 | ||
163 | for (ALL_LIST_ELEMENTS_RO (bm->bgp, mnode, bgp)) | |
164 | { | |
165 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) | |
166 | { | |
167 | if (peer->conf_if && (strcmp (peer->conf_if, ifc->ifp->name) == 0)) | |
168 | { | |
169 | BGP_EVENT_ADD (peer, BGP_Stop); | |
170 | } | |
171 | } | |
172 | } | |
173 | } | |
174 | ||
718e3744 | 175 | /* Inteface addition message from zebra. */ |
94f2b392 | 176 | static int |
718e3744 | 177 | bgp_interface_add (int command, struct zclient *zclient, zebra_size_t length) |
178 | { | |
179 | struct interface *ifp; | |
180 | ||
181 | ifp = zebra_interface_add_read (zclient->ibuf); | |
718e3744 | 182 | |
16286195 | 183 | if (BGP_DEBUG (zebra, ZEBRA) && ifp) |
a39275d7 AS |
184 | zlog_debug("Zebra rcvd: interface add %s", ifp->name); |
185 | ||
718e3744 | 186 | return 0; |
187 | } | |
188 | ||
94f2b392 | 189 | static int |
718e3744 | 190 | bgp_interface_delete (int command, struct zclient *zclient, |
191 | zebra_size_t length) | |
192 | { | |
193 | struct stream *s; | |
194 | struct interface *ifp; | |
195 | ||
196 | s = zclient->ibuf; | |
197 | ifp = zebra_interface_state_read (s); | |
d2fc8896 | 198 | ifp->ifindex = IFINDEX_INTERNAL; |
718e3744 | 199 | |
16286195 | 200 | if (BGP_DEBUG (zebra, ZEBRA)) |
a39275d7 AS |
201 | zlog_debug("Zebra rcvd: interface delete %s", ifp->name); |
202 | ||
718e3744 | 203 | return 0; |
204 | } | |
205 | ||
94f2b392 | 206 | static int |
718e3744 | 207 | bgp_interface_up (int command, struct zclient *zclient, zebra_size_t length) |
208 | { | |
209 | struct stream *s; | |
210 | struct interface *ifp; | |
211 | struct connected *c; | |
a80beece | 212 | struct nbr_connected *nc; |
1eb8ef25 | 213 | struct listnode *node, *nnode; |
718e3744 | 214 | |
215 | s = zclient->ibuf; | |
216 | ifp = zebra_interface_state_read (s); | |
217 | ||
218 | if (! ifp) | |
219 | return 0; | |
220 | ||
16286195 | 221 | if (BGP_DEBUG (zebra, ZEBRA)) |
a39275d7 AS |
222 | zlog_debug("Zebra rcvd: interface %s up", ifp->name); |
223 | ||
1eb8ef25 | 224 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) |
225 | bgp_connected_add (c); | |
718e3744 | 226 | |
a80beece DS |
227 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) |
228 | bgp_nbr_connected_add (nc); | |
229 | ||
718e3744 | 230 | return 0; |
231 | } | |
232 | ||
94f2b392 | 233 | static int |
718e3744 | 234 | bgp_interface_down (int command, struct zclient *zclient, zebra_size_t length) |
235 | { | |
236 | struct stream *s; | |
237 | struct interface *ifp; | |
238 | struct connected *c; | |
a80beece | 239 | struct nbr_connected *nc; |
1eb8ef25 | 240 | struct listnode *node, *nnode; |
718e3744 | 241 | |
242 | s = zclient->ibuf; | |
243 | ifp = zebra_interface_state_read (s); | |
244 | if (! ifp) | |
245 | return 0; | |
246 | ||
16286195 | 247 | if (BGP_DEBUG (zebra, ZEBRA)) |
a39275d7 AS |
248 | zlog_debug("Zebra rcvd: interface %s down", ifp->name); |
249 | ||
1eb8ef25 | 250 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, c)) |
251 | bgp_connected_delete (c); | |
718e3744 | 252 | |
a80beece DS |
253 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, node, nnode, nc)) |
254 | bgp_nbr_connected_delete (nc); | |
255 | ||
8da8689d | 256 | /* Fast external-failover */ |
718e3744 | 257 | { |
1eb8ef25 | 258 | struct listnode *mnode; |
718e3744 | 259 | struct bgp *bgp; |
260 | struct peer *peer; | |
718e3744 | 261 | |
1eb8ef25 | 262 | for (ALL_LIST_ELEMENTS_RO (bm->bgp, mnode, bgp)) |
718e3744 | 263 | { |
264 | if (CHECK_FLAG (bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) | |
265 | continue; | |
266 | ||
1eb8ef25 | 267 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) |
718e3744 | 268 | { |
8da8689d | 269 | if ((peer->ttl != 1) && (peer->gtsm_hops != 1)) |
718e3744 | 270 | continue; |
271 | ||
8da8689d | 272 | if (ifp == peer->nexthop.ifp) |
718e3744 | 273 | BGP_EVENT_ADD (peer, BGP_Stop); |
274 | } | |
275 | } | |
276 | } | |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
d5a5c8f0 DS |
281 | static int |
282 | bgp_interface_bfd_dest_down (int command, struct zclient *zclient, | |
283 | zebra_size_t length) | |
284 | { | |
285 | struct interface *ifp; | |
286 | struct prefix p; | |
287 | ||
288 | ifp = zebra_interface_bfd_read (zclient->ibuf, &p); | |
289 | ||
290 | if (ifp == NULL) | |
291 | return 0; | |
292 | ||
16286195 | 293 | if (BGP_DEBUG (zebra, ZEBRA)) |
d5a5c8f0 DS |
294 | { |
295 | char buf[128]; | |
296 | prefix2str(&p, buf, sizeof(buf)); | |
297 | zlog_debug("Zebra: interface %s bfd destination %s down", ifp->name, buf); | |
298 | } | |
299 | ||
300 | /* Bring the peer down if BFD is enabled in BGP */ | |
301 | { | |
302 | struct listnode *mnode, *node, *nnode; | |
303 | struct bgp *bgp; | |
304 | struct peer *peer; | |
305 | ||
306 | for (ALL_LIST_ELEMENTS_RO (bm->bgp, mnode, bgp)) | |
307 | { | |
308 | for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer)) | |
309 | { | |
310 | if (!CHECK_FLAG (peer->flags, PEER_FLAG_BFD)) | |
311 | continue; | |
312 | ||
313 | if (ifp == peer->nexthop.ifp) | |
314 | BGP_EVENT_ADD (peer, BGP_Stop); | |
315 | } | |
316 | } | |
317 | } | |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
94f2b392 | 322 | static int |
718e3744 | 323 | bgp_interface_address_add (int command, struct zclient *zclient, |
324 | zebra_size_t length) | |
325 | { | |
326 | struct connected *ifc; | |
327 | ||
0a589359 | 328 | ifc = zebra_interface_address_read (command, zclient->ibuf); |
718e3744 | 329 | |
330 | if (ifc == NULL) | |
331 | return 0; | |
332 | ||
16286195 | 333 | if (bgp_debug_zebra(ifc->address)) |
a39275d7 AS |
334 | { |
335 | char buf[128]; | |
336 | prefix2str(ifc->address, buf, sizeof(buf)); | |
337 | zlog_debug("Zebra rcvd: interface %s address add %s", | |
338 | ifc->ifp->name, buf); | |
339 | } | |
340 | ||
2e3b2e47 | 341 | if (if_is_operative (ifc->ifp)) |
718e3744 | 342 | bgp_connected_add (ifc); |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
94f2b392 | 347 | static int |
718e3744 | 348 | bgp_interface_address_delete (int command, struct zclient *zclient, |
349 | zebra_size_t length) | |
350 | { | |
351 | struct connected *ifc; | |
352 | ||
0a589359 | 353 | ifc = zebra_interface_address_read (command, zclient->ibuf); |
718e3744 | 354 | |
355 | if (ifc == NULL) | |
356 | return 0; | |
357 | ||
16286195 | 358 | if (bgp_debug_zebra(ifc->address)) |
a39275d7 AS |
359 | { |
360 | char buf[128]; | |
361 | prefix2str(ifc->address, buf, sizeof(buf)); | |
362 | zlog_debug("Zebra rcvd: interface %s address delete %s", | |
363 | ifc->ifp->name, buf); | |
364 | } | |
365 | ||
2e3b2e47 | 366 | if (if_is_operative (ifc->ifp)) |
718e3744 | 367 | bgp_connected_delete (ifc); |
368 | ||
369 | connected_free (ifc); | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
a80beece DS |
374 | static int |
375 | bgp_interface_nbr_address_add (int command, struct zclient *zclient, | |
376 | zebra_size_t length) | |
377 | { | |
378 | struct nbr_connected *ifc = NULL; | |
379 | ||
380 | ifc = zebra_interface_nbr_address_read (command, zclient->ibuf); | |
381 | ||
382 | if (ifc == NULL) | |
383 | return 0; | |
384 | ||
16286195 | 385 | if (bgp_debug_zebra(ifc->address)) |
a80beece DS |
386 | { |
387 | char buf[128]; | |
388 | prefix2str(ifc->address, buf, sizeof(buf)); | |
389 | zlog_debug("Zebra rcvd: interface %s nbr address add %s", | |
390 | ifc->ifp->name, buf); | |
391 | } | |
392 | ||
393 | if (if_is_operative (ifc->ifp)) | |
394 | bgp_nbr_connected_add (ifc); | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | static int | |
400 | bgp_interface_nbr_address_delete (int command, struct zclient *zclient, | |
401 | zebra_size_t length) | |
402 | { | |
403 | struct nbr_connected *ifc = NULL; | |
404 | ||
405 | ifc = zebra_interface_nbr_address_read (command, zclient->ibuf); | |
406 | ||
407 | if (ifc == NULL) | |
408 | return 0; | |
409 | ||
16286195 | 410 | if (bgp_debug_zebra(ifc->address)) |
a80beece DS |
411 | { |
412 | char buf[128]; | |
413 | prefix2str(ifc->address, buf, sizeof(buf)); | |
414 | zlog_debug("Zebra rcvd: interface %s nbr address delete %s", | |
415 | ifc->ifp->name, buf); | |
416 | } | |
417 | ||
418 | if (if_is_operative (ifc->ifp)) | |
419 | bgp_nbr_connected_delete (ifc); | |
420 | ||
421 | nbr_connected_free (ifc); | |
422 | ||
423 | return 0; | |
424 | } | |
425 | ||
718e3744 | 426 | /* Zebra route add and delete treatment. */ |
94f2b392 | 427 | static int |
718e3744 | 428 | zebra_read_ipv4 (int command, struct zclient *zclient, zebra_size_t length) |
429 | { | |
430 | struct stream *s; | |
431 | struct zapi_ipv4 api; | |
718e3744 | 432 | struct in_addr nexthop; |
433 | struct prefix_ipv4 p; | |
bc413143 | 434 | unsigned int ifindex; |
718e3744 | 435 | |
436 | s = zclient->ibuf; | |
718e3744 | 437 | nexthop.s_addr = 0; |
438 | ||
439 | /* Type, flags, message. */ | |
440 | api.type = stream_getc (s); | |
7c8ff89e | 441 | api.instance = stream_getw (s); |
718e3744 | 442 | api.flags = stream_getc (s); |
443 | api.message = stream_getc (s); | |
444 | ||
445 | /* IPv4 prefix. */ | |
446 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
447 | p.family = AF_INET; | |
448 | p.prefixlen = stream_getc (s); | |
449 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); | |
450 | ||
451 | /* Nexthop, ifindex, distance, metric. */ | |
452 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
453 | { | |
454 | api.nexthop_num = stream_getc (s); | |
455 | nexthop.s_addr = stream_get_ipv4 (s); | |
456 | } | |
0d9551dc | 457 | |
718e3744 | 458 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) |
459 | { | |
460 | api.ifindex_num = stream_getc (s); | |
bc413143 | 461 | ifindex = stream_getl (s); /* ifindex, unused */ |
718e3744 | 462 | } |
ffd0c037 DS |
463 | else |
464 | { | |
465 | ifindex = 0; | |
466 | } | |
0d9551dc | 467 | |
718e3744 | 468 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) |
469 | api.distance = stream_getc (s); | |
0d9551dc | 470 | |
718e3744 | 471 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) |
472 | api.metric = stream_getl (s); | |
473 | else | |
474 | api.metric = 0; | |
475 | ||
0d9551dc DS |
476 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG)) |
477 | api.tag = stream_getw (s); | |
478 | else | |
479 | api.tag = 0; | |
480 | ||
718e3744 | 481 | if (command == ZEBRA_IPV4_ROUTE_ADD) |
a39275d7 | 482 | { |
ffd0c037 | 483 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 AS |
484 | { |
485 | char buf[2][INET_ADDRSTRLEN]; | |
7c8ff89e DS |
486 | zlog_debug("Zebra rcvd: IPv4 route add %s[%d] %s/%d nexthop %s metric %u tag %d", |
487 | zebra_route_string(api.type), api.instance, | |
a39275d7 AS |
488 | inet_ntop(AF_INET, &p.prefix, buf[0], sizeof(buf[0])), |
489 | p.prefixlen, | |
490 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
491 | api.metric, |
492 | api.tag); | |
a39275d7 | 493 | } |
bc413143 | 494 | bgp_redistribute_add((struct prefix *)&p, &nexthop, NULL, ifindex, |
7c8ff89e | 495 | api.metric, api.type, api.instance, api.tag); |
a39275d7 | 496 | } |
718e3744 | 497 | else |
a39275d7 | 498 | { |
ffd0c037 | 499 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 AS |
500 | { |
501 | char buf[2][INET_ADDRSTRLEN]; | |
7c8ff89e | 502 | zlog_debug("Zebra rcvd: IPv4 route delete %s[%d] %s/%d " |
0d9551dc | 503 | "nexthop %s metric %u tag %d", |
7c8ff89e | 504 | zebra_route_string(api.type), api.instance, |
a39275d7 AS |
505 | inet_ntop(AF_INET, &p.prefix, buf[0], sizeof(buf[0])), |
506 | p.prefixlen, | |
507 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
508 | api.metric, |
509 | api.tag); | |
a39275d7 | 510 | } |
7c8ff89e | 511 | bgp_redistribute_delete((struct prefix *)&p, api.type, api.instance); |
a39275d7 | 512 | } |
718e3744 | 513 | |
514 | return 0; | |
515 | } | |
516 | ||
517 | #ifdef HAVE_IPV6 | |
518 | /* Zebra route add and delete treatment. */ | |
94f2b392 | 519 | static int |
718e3744 | 520 | zebra_read_ipv6 (int command, struct zclient *zclient, zebra_size_t length) |
521 | { | |
522 | struct stream *s; | |
523 | struct zapi_ipv6 api; | |
718e3744 | 524 | struct in6_addr nexthop; |
525 | struct prefix_ipv6 p; | |
bc413143 | 526 | unsigned int ifindex; |
718e3744 | 527 | |
528 | s = zclient->ibuf; | |
718e3744 | 529 | memset (&nexthop, 0, sizeof (struct in6_addr)); |
530 | ||
531 | /* Type, flags, message. */ | |
532 | api.type = stream_getc (s); | |
7c8ff89e | 533 | api.instance = stream_getw (s); |
718e3744 | 534 | api.flags = stream_getc (s); |
535 | api.message = stream_getc (s); | |
536 | ||
537 | /* IPv6 prefix. */ | |
538 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
539 | p.family = AF_INET6; | |
540 | p.prefixlen = stream_getc (s); | |
541 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); | |
542 | ||
543 | /* Nexthop, ifindex, distance, metric. */ | |
544 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
545 | { | |
546 | api.nexthop_num = stream_getc (s); | |
547 | stream_get (&nexthop, s, 16); | |
548 | } | |
0d9551dc | 549 | |
718e3744 | 550 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) |
551 | { | |
552 | api.ifindex_num = stream_getc (s); | |
bc413143 | 553 | ifindex = stream_getl (s); /* ifindex, unused */ |
718e3744 | 554 | } |
ffd0c037 DS |
555 | else |
556 | { | |
557 | ifindex = 0; | |
558 | } | |
0d9551dc | 559 | |
718e3744 | 560 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) |
561 | api.distance = stream_getc (s); | |
562 | else | |
563 | api.distance = 0; | |
0d9551dc | 564 | |
718e3744 | 565 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) |
566 | api.metric = stream_getl (s); | |
567 | else | |
568 | api.metric = 0; | |
569 | ||
0d9551dc DS |
570 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG)) |
571 | api.tag = stream_getw (s); | |
572 | else | |
573 | api.tag = 0; | |
574 | ||
718e3744 | 575 | /* Simply ignore link-local address. */ |
576 | if (IN6_IS_ADDR_LINKLOCAL (&p.prefix)) | |
577 | return 0; | |
578 | ||
579 | if (command == ZEBRA_IPV6_ROUTE_ADD) | |
a39275d7 | 580 | { |
ffd0c037 | 581 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 | 582 | { |
f04a80a5 | 583 | char buf[2][INET6_ADDRSTRLEN]; |
7c8ff89e DS |
584 | zlog_debug("Zebra rcvd: IPv6 route add %s[%d] %s/%d nexthop %s metric %u tag %d", |
585 | zebra_route_string(api.type), api.instance, | |
f04a80a5 SH |
586 | inet_ntop(AF_INET6, &p.prefix, buf[0], sizeof(buf[0])), |
587 | p.prefixlen, | |
588 | inet_ntop(AF_INET, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
589 | api.metric, |
590 | api.tag); | |
a39275d7 | 591 | } |
bc413143 | 592 | bgp_redistribute_add ((struct prefix *)&p, NULL, &nexthop, ifindex, |
7c8ff89e | 593 | api.metric, api.type, api.instance, api.tag); |
a39275d7 | 594 | } |
718e3744 | 595 | else |
a39275d7 | 596 | { |
ffd0c037 | 597 | if (bgp_debug_zebra((struct prefix *)&p)) |
a39275d7 | 598 | { |
f04a80a5 | 599 | char buf[2][INET6_ADDRSTRLEN]; |
7c8ff89e | 600 | zlog_debug("Zebra rcvd: IPv6 route delete %s[%d] %s/%d " |
0d9551dc | 601 | "nexthop %s metric %u tag %d", |
7c8ff89e | 602 | zebra_route_string(api.type), api.instance, |
f04a80a5 SH |
603 | inet_ntop(AF_INET6, &p.prefix, buf[0], sizeof(buf[0])), |
604 | p.prefixlen, | |
605 | inet_ntop(AF_INET6, &nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
606 | api.metric, |
607 | api.tag); | |
a39275d7 | 608 | } |
7c8ff89e | 609 | bgp_redistribute_delete ((struct prefix *) &p, api.type, api.instance); |
a39275d7 | 610 | } |
718e3744 | 611 | |
612 | return 0; | |
613 | } | |
614 | #endif /* HAVE_IPV6 */ | |
6b0655a2 | 615 | |
718e3744 | 616 | struct interface * |
617 | if_lookup_by_ipv4 (struct in_addr *addr) | |
618 | { | |
52dc7ee6 | 619 | struct listnode *ifnode; |
620 | struct listnode *cnode; | |
718e3744 | 621 | struct interface *ifp; |
622 | struct connected *connected; | |
623 | struct prefix_ipv4 p; | |
624 | struct prefix *cp; | |
625 | ||
626 | p.family = AF_INET; | |
627 | p.prefix = *addr; | |
628 | p.prefixlen = IPV4_MAX_BITLEN; | |
629 | ||
1eb8ef25 | 630 | for (ALL_LIST_ELEMENTS_RO (iflist, ifnode, ifp)) |
718e3744 | 631 | { |
1eb8ef25 | 632 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 633 | { |
718e3744 | 634 | cp = connected->address; |
635 | ||
636 | if (cp->family == AF_INET) | |
637 | if (prefix_match (cp, (struct prefix *)&p)) | |
638 | return ifp; | |
639 | } | |
640 | } | |
641 | return NULL; | |
642 | } | |
643 | ||
644 | struct interface * | |
645 | if_lookup_by_ipv4_exact (struct in_addr *addr) | |
646 | { | |
52dc7ee6 | 647 | struct listnode *ifnode; |
648 | struct listnode *cnode; | |
718e3744 | 649 | struct interface *ifp; |
650 | struct connected *connected; | |
651 | struct prefix *cp; | |
652 | ||
1eb8ef25 | 653 | for (ALL_LIST_ELEMENTS_RO (iflist, ifnode, ifp)) |
718e3744 | 654 | { |
1eb8ef25 | 655 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 656 | { |
718e3744 | 657 | cp = connected->address; |
658 | ||
659 | if (cp->family == AF_INET) | |
660 | if (IPV4_ADDR_SAME (&cp->u.prefix4, addr)) | |
661 | return ifp; | |
662 | } | |
663 | } | |
664 | return NULL; | |
665 | } | |
666 | ||
667 | #ifdef HAVE_IPV6 | |
668 | struct interface * | |
ffd0c037 | 669 | if_lookup_by_ipv6 (struct in6_addr *addr, unsigned int ifindex) |
718e3744 | 670 | { |
52dc7ee6 | 671 | struct listnode *ifnode; |
672 | struct listnode *cnode; | |
718e3744 | 673 | struct interface *ifp; |
674 | struct connected *connected; | |
675 | struct prefix_ipv6 p; | |
676 | struct prefix *cp; | |
677 | ||
678 | p.family = AF_INET6; | |
679 | p.prefix = *addr; | |
680 | p.prefixlen = IPV6_MAX_BITLEN; | |
681 | ||
1eb8ef25 | 682 | for (ALL_LIST_ELEMENTS_RO (iflist, ifnode, ifp)) |
718e3744 | 683 | { |
1eb8ef25 | 684 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 685 | { |
718e3744 | 686 | cp = connected->address; |
687 | ||
688 | if (cp->family == AF_INET6) | |
689 | if (prefix_match (cp, (struct prefix *)&p)) | |
f2345335 | 690 | { |
ffd0c037 | 691 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6.s6_addr32[0])) |
f2345335 DS |
692 | { |
693 | if (ifindex == ifp->ifindex) | |
694 | return ifp; | |
695 | } | |
696 | else | |
697 | return ifp; | |
698 | } | |
718e3744 | 699 | } |
700 | } | |
701 | return NULL; | |
702 | } | |
703 | ||
704 | struct interface * | |
ffd0c037 | 705 | if_lookup_by_ipv6_exact (struct in6_addr *addr, unsigned int ifindex) |
718e3744 | 706 | { |
52dc7ee6 | 707 | struct listnode *ifnode; |
708 | struct listnode *cnode; | |
718e3744 | 709 | struct interface *ifp; |
710 | struct connected *connected; | |
711 | struct prefix *cp; | |
712 | ||
1eb8ef25 | 713 | for (ALL_LIST_ELEMENTS_RO (iflist, ifnode, ifp)) |
718e3744 | 714 | { |
1eb8ef25 | 715 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 716 | { |
718e3744 | 717 | cp = connected->address; |
718 | ||
719 | if (cp->family == AF_INET6) | |
720 | if (IPV6_ADDR_SAME (&cp->u.prefix6, addr)) | |
f2345335 DS |
721 | { |
722 | if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) | |
723 | { | |
724 | if (ifindex == ifp->ifindex) | |
725 | return ifp; | |
726 | } | |
727 | else | |
728 | return ifp; | |
729 | } | |
718e3744 | 730 | } |
731 | } | |
732 | return NULL; | |
733 | } | |
734 | ||
94f2b392 | 735 | static int |
718e3744 | 736 | if_get_ipv6_global (struct interface *ifp, struct in6_addr *addr) |
737 | { | |
52dc7ee6 | 738 | struct listnode *cnode; |
718e3744 | 739 | struct connected *connected; |
740 | struct prefix *cp; | |
741 | ||
1eb8ef25 | 742 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 743 | { |
718e3744 | 744 | cp = connected->address; |
745 | ||
746 | if (cp->family == AF_INET6) | |
747 | if (! IN6_IS_ADDR_LINKLOCAL (&cp->u.prefix6)) | |
748 | { | |
749 | memcpy (addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
750 | return 1; | |
751 | } | |
752 | } | |
753 | return 0; | |
754 | } | |
755 | ||
94f2b392 | 756 | static int |
718e3744 | 757 | if_get_ipv6_local (struct interface *ifp, struct in6_addr *addr) |
758 | { | |
52dc7ee6 | 759 | struct listnode *cnode; |
718e3744 | 760 | struct connected *connected; |
761 | struct prefix *cp; | |
762 | ||
1eb8ef25 | 763 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) |
718e3744 | 764 | { |
718e3744 | 765 | cp = connected->address; |
766 | ||
767 | if (cp->family == AF_INET6) | |
768 | if (IN6_IS_ADDR_LINKLOCAL (&cp->u.prefix6)) | |
769 | { | |
770 | memcpy (addr, &cp->u.prefix6, IPV6_MAX_BYTELEN); | |
771 | return 1; | |
772 | } | |
773 | } | |
774 | return 0; | |
775 | } | |
776 | #endif /* HAVE_IPV6 */ | |
777 | ||
6ee06fa9 PM |
778 | static int |
779 | if_get_ipv4_address (struct interface *ifp, struct in_addr *addr) | |
780 | { | |
781 | struct listnode *cnode; | |
782 | struct connected *connected; | |
783 | struct prefix *cp; | |
784 | ||
785 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, connected)) | |
786 | { | |
787 | cp = connected->address; | |
788 | if ((cp->family == AF_INET) && !ipv4_martian(&(cp->u.prefix4))) | |
789 | { | |
790 | *addr = cp->u.prefix4; | |
791 | return 1; | |
792 | } | |
793 | } | |
794 | return 0; | |
795 | } | |
796 | ||
718e3744 | 797 | int |
798 | bgp_nexthop_set (union sockunion *local, union sockunion *remote, | |
799 | struct bgp_nexthop *nexthop, struct peer *peer) | |
800 | { | |
801 | int ret = 0; | |
802 | struct interface *ifp = NULL; | |
803 | ||
804 | memset (nexthop, 0, sizeof (struct bgp_nexthop)); | |
805 | ||
806 | if (!local) | |
807 | return -1; | |
808 | if (!remote) | |
809 | return -1; | |
810 | ||
811 | if (local->sa.sa_family == AF_INET) | |
812 | { | |
813 | nexthop->v4 = local->sin.sin_addr; | |
2fb2f5cf DS |
814 | if (peer->update_if) |
815 | ifp = if_lookup_by_name (peer->update_if); | |
816 | else | |
817 | ifp = if_lookup_by_ipv4_exact (&local->sin.sin_addr); | |
718e3744 | 818 | } |
819 | #ifdef HAVE_IPV6 | |
820 | if (local->sa.sa_family == AF_INET6) | |
821 | { | |
822 | if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr)) | |
823 | { | |
a80beece DS |
824 | if (peer->conf_if || peer->ifname) |
825 | ifp = if_lookup_by_index (if_nametoindex (peer->conf_if ? peer->conf_if : peer->ifname)); | |
718e3744 | 826 | } |
2fb2f5cf DS |
827 | else if (peer->update_if) |
828 | ifp = if_lookup_by_name (peer->update_if); | |
718e3744 | 829 | else |
f2345335 DS |
830 | ifp = if_lookup_by_ipv6_exact (&local->sin6.sin6_addr, |
831 | local->sin6.sin6_scope_id); | |
718e3744 | 832 | } |
833 | #endif /* HAVE_IPV6 */ | |
834 | ||
835 | if (!ifp) | |
836 | return -1; | |
837 | ||
838 | nexthop->ifp = ifp; | |
839 | ||
840 | /* IPv4 connection. */ | |
841 | if (local->sa.sa_family == AF_INET) | |
842 | { | |
843 | #ifdef HAVE_IPV6 | |
844 | /* IPv6 nexthop*/ | |
845 | ret = if_get_ipv6_global (ifp, &nexthop->v6_global); | |
846 | ||
847 | /* There is no global nexthop. */ | |
848 | if (!ret) | |
849 | if_get_ipv6_local (ifp, &nexthop->v6_global); | |
850 | else | |
851 | if_get_ipv6_local (ifp, &nexthop->v6_local); | |
852 | #endif /* HAVE_IPV6 */ | |
853 | } | |
854 | ||
855 | #ifdef HAVE_IPV6 | |
856 | /* IPv6 connection. */ | |
857 | if (local->sa.sa_family == AF_INET6) | |
858 | { | |
859 | struct interface *direct = NULL; | |
860 | ||
6ee06fa9 PM |
861 | /* IPv4 nexthop. */ |
862 | ret = if_get_ipv4_address(ifp, &nexthop->v4); | |
863 | if (!ret && peer->local_id.s_addr) | |
718e3744 | 864 | nexthop->v4 = peer->local_id; |
865 | ||
866 | /* Global address*/ | |
867 | if (! IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr)) | |
868 | { | |
869 | memcpy (&nexthop->v6_global, &local->sin6.sin6_addr, | |
870 | IPV6_MAX_BYTELEN); | |
871 | ||
872 | /* If directory connected set link-local address. */ | |
f2345335 DS |
873 | direct = if_lookup_by_ipv6 (&remote->sin6.sin6_addr, |
874 | remote->sin6.sin6_scope_id); | |
718e3744 | 875 | if (direct) |
876 | if_get_ipv6_local (ifp, &nexthop->v6_local); | |
877 | } | |
878 | else | |
879 | /* Link-local address. */ | |
880 | { | |
881 | ret = if_get_ipv6_global (ifp, &nexthop->v6_global); | |
882 | ||
883 | /* If there is no global address. Set link-local address as | |
884 | global. I know this break RFC specification... */ | |
885 | if (!ret) | |
886 | memcpy (&nexthop->v6_global, &local->sin6.sin6_addr, | |
887 | IPV6_MAX_BYTELEN); | |
888 | else | |
889 | memcpy (&nexthop->v6_local, &local->sin6.sin6_addr, | |
890 | IPV6_MAX_BYTELEN); | |
891 | } | |
892 | } | |
893 | ||
894 | if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr) || | |
f2345335 | 895 | if_lookup_by_ipv6 (&remote->sin6.sin6_addr, remote->sin6.sin6_scope_id)) |
718e3744 | 896 | peer->shared_network = 1; |
897 | else | |
898 | peer->shared_network = 0; | |
899 | ||
900 | /* KAME stack specific treatment. */ | |
901 | #ifdef KAME | |
902 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_global) | |
903 | && IN6_LINKLOCAL_IFINDEX (nexthop->v6_global)) | |
904 | { | |
905 | SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_global, 0); | |
906 | } | |
907 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_local) | |
908 | && IN6_LINKLOCAL_IFINDEX (nexthop->v6_local)) | |
909 | { | |
910 | SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_local, 0); | |
911 | } | |
912 | #endif /* KAME */ | |
913 | #endif /* HAVE_IPV6 */ | |
914 | return ret; | |
915 | } | |
916 | ||
73ac8160 DS |
917 | static struct in6_addr * |
918 | bgp_info_to_ipv6_nexthop (struct bgp_info *info) | |
919 | { | |
920 | struct in6_addr *nexthop = NULL; | |
921 | ||
922 | /* Only global address nexthop exists. */ | |
801a9bcc | 923 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL) |
73ac8160 DS |
924 | nexthop = &info->attr->extra->mp_nexthop_global; |
925 | ||
926 | /* If both global and link-local address present. */ | |
801a9bcc | 927 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
928 | { |
929 | /* Workaround for Cisco's nexthop bug. */ | |
930 | if (IN6_IS_ADDR_UNSPECIFIED (&info->attr->extra->mp_nexthop_global) | |
931 | && info->peer->su_remote->sa.sa_family == AF_INET6) | |
932 | nexthop = &info->peer->su_remote->sin6.sin6_addr; | |
933 | else | |
934 | nexthop = &info->attr->extra->mp_nexthop_local; | |
935 | } | |
936 | ||
937 | return nexthop; | |
938 | } | |
939 | ||
940 | static int | |
941 | bgp_table_map_apply (struct route_map *map, struct prefix *p, | |
942 | struct bgp_info *info) | |
943 | { | |
944 | if (route_map_apply(map, p, RMAP_BGP, info) != RMAP_DENYMATCH) | |
945 | return 1; | |
946 | ||
16286195 | 947 | if (bgp_debug_zebra(p)) |
73ac8160 DS |
948 | { |
949 | if (p->family == AF_INET) | |
950 | { | |
951 | char buf[2][INET_ADDRSTRLEN]; | |
952 | zlog_debug("Zebra rmap deny: IPv4 route %s/%d nexthop %s", | |
953 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), | |
954 | p->prefixlen, | |
955 | inet_ntop(AF_INET, &info->attr->nexthop, buf[1], | |
956 | sizeof(buf[1]))); | |
957 | } | |
958 | if (p->family == AF_INET6) | |
959 | { | |
960 | char buf[2][INET6_ADDRSTRLEN]; | |
961 | zlog_debug("Zebra rmap deny: IPv6 route %s/%d nexthop %s", | |
962 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), | |
963 | p->prefixlen, | |
964 | inet_ntop(AF_INET6, bgp_info_to_ipv6_nexthop(info), buf[1], | |
965 | sizeof(buf[1]))); | |
966 | } | |
967 | } | |
968 | return 0; | |
969 | } | |
970 | ||
718e3744 | 971 | void |
73ac8160 DS |
972 | bgp_zebra_announce (struct prefix *p, struct bgp_info *info, struct bgp *bgp, |
973 | afi_t afi, safi_t safi) | |
718e3744 | 974 | { |
975 | int flags; | |
976 | u_char distance; | |
977 | struct peer *peer; | |
8196f13d JB |
978 | struct bgp_info *mpinfo; |
979 | size_t oldsize, newsize; | |
73ac8160 DS |
980 | u_int32_t nhcount, metric; |
981 | struct bgp_info local_info; | |
982 | struct bgp_info *info_cp = &local_info; | |
0d9551dc | 983 | u_short tag; |
718e3744 | 984 | |
985 | if (zclient->sock < 0) | |
986 | return; | |
987 | ||
8bb0831e DS |
988 | if ((p->family == AF_INET && !zclient->redist[AFI_IP][ZEBRA_ROUTE_BGP].enabled) |
989 | || (p->family == AF_INET6 && !zclient->redist[AFI_IP6][ZEBRA_ROUTE_BGP].enabled)) | |
718e3744 | 990 | return; |
991 | ||
4a16ae86 DS |
992 | if (bgp->main_zebra_update_hold) |
993 | return; | |
994 | ||
718e3744 | 995 | flags = 0; |
996 | peer = info->peer; | |
997 | ||
0d9551dc DS |
998 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
999 | tag = info->attr->extra->tag; | |
1000 | else | |
1001 | tag = 0; | |
1002 | ||
f992e2a9 DS |
1003 | /* When we create an aggregate route we must also install a Null0 route in |
1004 | * the RIB */ | |
1005 | if (info->sub_type == BGP_ROUTE_AGGREGATE) | |
1006 | SET_FLAG (flags, ZEBRA_FLAG_BLACKHOLE); | |
1007 | ||
1008 | if (peer->sort == BGP_PEER_IBGP || peer->sort == BGP_PEER_CONFED || | |
1009 | info->sub_type == BGP_ROUTE_AGGREGATE) | |
718e3744 | 1010 | { |
1011 | SET_FLAG (flags, ZEBRA_FLAG_IBGP); | |
1012 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); | |
1013 | } | |
1014 | ||
6d85b15b | 1015 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
907f92c8 DS |
1016 | || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) |
1017 | || bgp_flag_check(bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
1018 | ||
718e3744 | 1019 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); |
1020 | ||
431aa9f9 | 1021 | nhcount = 1 + bgp_info_mpath_count (info); |
8196f13d | 1022 | |
8a92a8a0 | 1023 | if (p->family == AF_INET && !BGP_ATTR_NEXTHOP_AFI_IP6(info->attr)) |
718e3744 | 1024 | { |
1025 | struct zapi_ipv4 api; | |
1026 | struct in_addr *nexthop; | |
73ac8160 DS |
1027 | char buf[2][INET_ADDRSTRLEN]; |
1028 | int valid_nh_count = 0; | |
718e3744 | 1029 | |
431aa9f9 DS |
1030 | /* resize nexthop buffer size if necessary */ |
1031 | if ((oldsize = stream_get_size (bgp_nexthop_buf)) < | |
1032 | (sizeof (struct in_addr *) * nhcount)) | |
1033 | { | |
1034 | newsize = (sizeof (struct in_addr *) * nhcount); | |
1035 | newsize = stream_resize (bgp_nexthop_buf, newsize); | |
1036 | if (newsize == oldsize) | |
1037 | { | |
1038 | zlog_err ("can't resize nexthop buffer"); | |
1039 | return; | |
1040 | } | |
1041 | } | |
1042 | stream_reset (bgp_nexthop_buf); | |
73ac8160 DS |
1043 | nexthop = NULL; |
1044 | ||
1045 | /* Metric is currently based on the best-path only. */ | |
1046 | metric = info->attr->med; | |
1047 | ||
1048 | if (bgp->table_map[afi][safi].name) | |
1049 | { | |
1050 | BGP_INFO_ATTR_BUF_INIT(); | |
1051 | ||
1052 | /* Copy info and attributes, so the route-map apply doesn't modify the | |
1053 | BGP route info. */ | |
1054 | BGP_INFO_ATTR_BUF_COPY(info, info_cp); | |
1055 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1056 | { | |
1057 | metric = info_cp->attr->med; | |
1058 | nexthop = &info_cp->attr->nexthop; | |
0d9551dc DS |
1059 | |
1060 | if (info_cp->attr->extra) | |
1061 | tag = info_cp->attr->extra->tag; | |
73ac8160 DS |
1062 | } |
1063 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1064 | } | |
1065 | else | |
1066 | { | |
1067 | nexthop = &info->attr->nexthop; | |
1068 | } | |
1069 | ||
1070 | if (nexthop) | |
1071 | { | |
1072 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in_addr *)); | |
1073 | valid_nh_count++; | |
1074 | } | |
431aa9f9 | 1075 | |
8196f13d | 1076 | for (mpinfo = bgp_info_mpath_first (info); mpinfo; |
73ac8160 DS |
1077 | mpinfo = bgp_info_mpath_next (mpinfo)) |
1078 | { | |
1079 | nexthop = NULL; | |
1080 | ||
1081 | if (bgp->table_map[afi][safi].name) | |
1082 | { | |
1083 | /* Copy info and attributes, so the route-map apply doesn't modify the | |
1084 | BGP route info. */ | |
1085 | BGP_INFO_ATTR_BUF_COPY(mpinfo, info_cp); | |
1086 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1087 | nexthop = &info_cp->attr->nexthop; | |
1088 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1089 | } | |
1090 | else | |
1091 | { | |
1092 | nexthop = &mpinfo->attr->nexthop; | |
1093 | } | |
1094 | ||
1095 | if (nexthop == NULL) | |
1096 | continue; | |
1097 | ||
1098 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in_addr *)); | |
1099 | valid_nh_count++; | |
1100 | } | |
718e3744 | 1101 | |
73ac8160 | 1102 | api.flags = flags; |
718e3744 | 1103 | api.type = ZEBRA_ROUTE_BGP; |
7c8ff89e | 1104 | api.instance = 0; |
718e3744 | 1105 | api.message = 0; |
5a616c08 | 1106 | api.safi = safi; |
718e3744 | 1107 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
f992e2a9 DS |
1108 | |
1109 | /* Note that this currently only applies to Null0 routes for aggregates. | |
1110 | * ZEBRA_FLAG_BLACKHOLE signals zapi_ipv4_route to encode a special | |
1111 | * BLACKHOLE nexthop. We want to set api.nexthop_num to zero since we | |
1112 | * do not want to also encode the 0.0.0.0 nexthop for the aggregate route. | |
1113 | */ | |
1114 | if (CHECK_FLAG(flags, ZEBRA_FLAG_BLACKHOLE)) | |
1115 | api.nexthop_num = 0; | |
1116 | else | |
1117 | api.nexthop_num = valid_nh_count; | |
1118 | ||
8196f13d | 1119 | api.nexthop = (struct in_addr **)STREAM_DATA (bgp_nexthop_buf); |
718e3744 | 1120 | api.ifindex_num = 0; |
1121 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
73ac8160 | 1122 | api.metric = metric; |
718e3744 | 1123 | |
0d9551dc DS |
1124 | if (tag) |
1125 | { | |
1126 | SET_FLAG (api.message, ZAPI_MESSAGE_TAG); | |
1127 | api.tag = tag; | |
1128 | } | |
1129 | ||
718e3744 | 1130 | distance = bgp_distance_apply (p, info, bgp); |
1131 | ||
1132 | if (distance) | |
1133 | { | |
1134 | SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE); | |
1135 | api.distance = distance; | |
1136 | } | |
a39275d7 | 1137 | |
16286195 | 1138 | if (bgp_debug_zebra(p)) |
73ac8160 DS |
1139 | { |
1140 | int i; | |
0d9551dc | 1141 | zlog_debug("Zebra send: IPv4 route %s %s/%d metric %u tag %d" |
73ac8160 DS |
1142 | " count %d", (valid_nh_count ? "add":"delete"), |
1143 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), | |
0d9551dc | 1144 | p->prefixlen, api.metric, api.tag, api.nexthop_num); |
73ac8160 DS |
1145 | for (i = 0; i < api.nexthop_num; i++) |
1146 | zlog_debug(" IPv4 [nexthop %d] %s", i+1, | |
1147 | inet_ntop(AF_INET, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1148 | } | |
a39275d7 | 1149 | |
73ac8160 DS |
1150 | zapi_ipv4_route (valid_nh_count ? ZEBRA_IPV4_ROUTE_ADD: ZEBRA_IPV4_ROUTE_DELETE, |
1151 | zclient, (struct prefix_ipv4 *) p, &api); | |
718e3744 | 1152 | } |
1153 | #ifdef HAVE_IPV6 | |
431aa9f9 | 1154 | |
718e3744 | 1155 | /* We have to think about a IPv6 link-local address curse. */ |
8a92a8a0 DS |
1156 | if (p->family == AF_INET6 || |
1157 | (p->family == AF_INET && BGP_ATTR_NEXTHOP_AFI_IP6(info->attr))) | |
718e3744 | 1158 | { |
1159 | unsigned int ifindex; | |
1160 | struct in6_addr *nexthop; | |
1161 | struct zapi_ipv6 api; | |
431aa9f9 | 1162 | int valid_nh_count = 0; |
73ac8160 | 1163 | char buf[2][INET6_ADDRSTRLEN]; |
431aa9f9 DS |
1164 | |
1165 | /* resize nexthop buffer size if necessary */ | |
1166 | if ((oldsize = stream_get_size (bgp_nexthop_buf)) < | |
1167 | (sizeof (struct in6_addr *) * nhcount)) | |
1168 | { | |
1169 | newsize = (sizeof (struct in6_addr *) * nhcount); | |
1170 | newsize = stream_resize (bgp_nexthop_buf, newsize); | |
1171 | if (newsize == oldsize) | |
1172 | { | |
1173 | zlog_err ("can't resize nexthop buffer"); | |
1174 | return; | |
1175 | } | |
1176 | } | |
1177 | stream_reset (bgp_nexthop_buf); | |
1178 | ||
1179 | /* resize ifindices buffer size if necessary */ | |
1180 | if ((oldsize = stream_get_size (bgp_ifindices_buf)) < | |
1181 | (sizeof (unsigned int) * nhcount)) | |
1182 | { | |
1183 | newsize = (sizeof (unsigned int) * nhcount); | |
1184 | newsize = stream_resize (bgp_ifindices_buf, newsize); | |
1185 | if (newsize == oldsize) | |
1186 | { | |
1187 | zlog_err ("can't resize nexthop buffer"); | |
1188 | return; | |
1189 | } | |
1190 | } | |
1191 | stream_reset (bgp_ifindices_buf); | |
718e3744 | 1192 | |
1193 | ifindex = 0; | |
1194 | nexthop = NULL; | |
431aa9f9 | 1195 | |
fb982c25 | 1196 | assert (info->attr->extra); |
718e3744 | 1197 | |
73ac8160 DS |
1198 | /* Metric is currently based on the best-path only. */ |
1199 | metric = info->attr->med; | |
1200 | ||
1201 | if (bgp->table_map[afi][safi].name) | |
1202 | { | |
1203 | BGP_INFO_ATTR_BUF_INIT(); | |
718e3744 | 1204 | |
73ac8160 DS |
1205 | /* Copy info and attributes, so the route-map apply doesn't modify the |
1206 | BGP route info. */ | |
1207 | BGP_INFO_ATTR_BUF_COPY(info, info_cp); | |
1208 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1209 | { | |
1210 | metric = info_cp->attr->med; | |
1211 | nexthop = bgp_info_to_ipv6_nexthop(info_cp); | |
0d9551dc DS |
1212 | |
1213 | if (info_cp->attr->extra) | |
1214 | tag = info_cp->attr->extra->tag; | |
73ac8160 DS |
1215 | } |
1216 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1217 | } | |
1218 | else | |
1219 | { | |
1220 | nexthop = bgp_info_to_ipv6_nexthop(info); | |
1221 | } | |
718e3744 | 1222 | |
73ac8160 DS |
1223 | if (nexthop) |
1224 | { | |
801a9bcc | 1225 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
1226 | if (info->peer->nexthop.ifp) |
1227 | ifindex = info->peer->nexthop.ifp->ifindex; | |
1228 | ||
1229 | if (!ifindex) | |
ffd0c037 DS |
1230 | { |
1231 | if (info->peer->conf_if || info->peer->ifname) | |
1232 | ifindex = if_nametoindex (info->peer->conf_if ? info->peer->conf_if : info->peer->ifname); | |
1233 | else if (info->peer->nexthop.ifp) | |
1234 | ifindex = info->peer->nexthop.ifp->ifindex; | |
1235 | } | |
73ac8160 DS |
1236 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in6_addr *)); |
1237 | stream_put (bgp_ifindices_buf, &ifindex, sizeof (unsigned int)); | |
1238 | valid_nh_count++; | |
1239 | } | |
431aa9f9 DS |
1240 | |
1241 | for (mpinfo = bgp_info_mpath_first (info); mpinfo; | |
1242 | mpinfo = bgp_info_mpath_next (mpinfo)) | |
73ac8160 DS |
1243 | { |
1244 | ifindex = 0; | |
1245 | nexthop = NULL; | |
000830bd | 1246 | |
73ac8160 | 1247 | if (bgp->table_map[afi][safi].name) |
431aa9f9 | 1248 | { |
73ac8160 DS |
1249 | /* Copy info and attributes, so the route-map apply doesn't modify the |
1250 | BGP route info. */ | |
1251 | BGP_INFO_ATTR_BUF_COPY(mpinfo, info_cp); | |
1252 | if (bgp_table_map_apply(bgp->table_map[afi][safi].map, p, info_cp)) | |
1253 | nexthop = bgp_info_to_ipv6_nexthop(info_cp); | |
1254 | BGP_INFO_ATTR_BUF_FREE(info_cp); | |
1255 | } | |
1256 | else | |
1257 | { | |
1258 | nexthop = bgp_info_to_ipv6_nexthop(mpinfo); | |
431aa9f9 | 1259 | } |
431aa9f9 | 1260 | |
73ac8160 DS |
1261 | if (nexthop == NULL) |
1262 | continue; | |
1263 | ||
801a9bcc | 1264 | if (mpinfo->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
73ac8160 DS |
1265 | if (mpinfo->peer->nexthop.ifp) |
1266 | ifindex = mpinfo->peer->nexthop.ifp->ifindex; | |
000830bd DS |
1267 | |
1268 | if (!ifindex) | |
ffd0c037 DS |
1269 | { |
1270 | if (mpinfo->peer->conf_if || mpinfo->peer->ifname) | |
1271 | ifindex = if_nametoindex (mpinfo->peer->conf_if ? mpinfo->peer->conf_if : mpinfo->peer->ifname); | |
1272 | else if (mpinfo->peer->nexthop.ifp) | |
1273 | ifindex = mpinfo->peer->nexthop.ifp->ifindex; | |
1274 | } | |
73ac8160 DS |
1275 | if (ifindex == 0) |
1276 | continue; | |
431aa9f9 DS |
1277 | |
1278 | stream_put (bgp_nexthop_buf, &nexthop, sizeof (struct in6_addr *)); | |
1279 | stream_put (bgp_ifindices_buf, &ifindex, sizeof (unsigned int)); | |
1280 | valid_nh_count++; | |
73ac8160 | 1281 | } |
718e3744 | 1282 | |
1283 | /* Make Zebra API structure. */ | |
1284 | api.flags = flags; | |
1285 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1286 | api.instance = 0; |
718e3744 | 1287 | api.message = 0; |
c7ec179a | 1288 | api.safi = safi; |
718e3744 | 1289 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
f992e2a9 DS |
1290 | |
1291 | /* Note that this currently only applies to Null0 routes for aggregates. | |
1292 | * ZEBRA_FLAG_BLACKHOLE signals zapi_ipv6_route to encode a special | |
1293 | * BLACKHOLE nexthop. We want to set api.nexthop_num to zero since we | |
1294 | * do not want to also encode the :: nexthop for the aggregate route. | |
1295 | */ | |
1296 | if (CHECK_FLAG(flags, ZEBRA_FLAG_BLACKHOLE)) | |
1297 | api.nexthop_num = 0; | |
1298 | else | |
1299 | api.nexthop_num = valid_nh_count; | |
1300 | ||
431aa9f9 | 1301 | api.nexthop = (struct in6_addr **)STREAM_DATA (bgp_nexthop_buf); |
718e3744 | 1302 | SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX); |
431aa9f9 DS |
1303 | api.ifindex_num = valid_nh_count; |
1304 | api.ifindex = (unsigned int *)STREAM_DATA (bgp_ifindices_buf); | |
718e3744 | 1305 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); |
73ac8160 | 1306 | api.metric = metric; |
718e3744 | 1307 | |
0d9551dc DS |
1308 | if (tag) |
1309 | { | |
1310 | SET_FLAG (api.message, ZAPI_MESSAGE_TAG); | |
1311 | api.tag = tag; | |
1312 | } | |
1313 | ||
8a92a8a0 | 1314 | if (p->family == AF_INET) |
73ac8160 | 1315 | { |
8a92a8a0 DS |
1316 | if (bgp_debug_zebra(p)) |
1317 | { | |
1318 | int i; | |
1319 | zlog_debug("Zebra send: IPv4 route %s %s/%d metric %u tag %d", | |
1320 | valid_nh_count ? "add" : "delete", | |
1321 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), | |
1322 | p->prefixlen, api.metric, api.tag); | |
1323 | for (i = 0; i < api.nexthop_num; i++) | |
1324 | zlog_debug(" IPv6 [nexthop %d] %s", i+1, | |
1325 | inet_ntop(AF_INET6, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1326 | } | |
1327 | ||
1328 | if (valid_nh_count) | |
1329 | zapi_ipv4_route_ipv6_nexthop (ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD, | |
1330 | zclient, (struct prefix_ipv4 *) p, &api); | |
1331 | else | |
1332 | zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, | |
1333 | zclient, (struct prefix_ipv4 *) p, &api); | |
73ac8160 | 1334 | } |
8a92a8a0 DS |
1335 | else |
1336 | { | |
1337 | if (bgp_debug_zebra(p)) | |
1338 | { | |
1339 | int i; | |
1340 | zlog_debug("Zebra send: IPv6 route %s %s/%d metric %u tag %d", | |
1341 | valid_nh_count ? "add" : "delete", | |
1342 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), | |
1343 | p->prefixlen, api.metric, api.tag); | |
1344 | for (i = 0; i < api.nexthop_num; i++) | |
1345 | zlog_debug(" IPv6 [nexthop %d] %s", i+1, | |
1346 | inet_ntop(AF_INET6, api.nexthop[i], buf[1], sizeof(buf[1]))); | |
1347 | } | |
a39275d7 | 1348 | |
8a92a8a0 DS |
1349 | zapi_ipv6_route (valid_nh_count ? |
1350 | ZEBRA_IPV6_ROUTE_ADD : ZEBRA_IPV6_ROUTE_DELETE, | |
1351 | zclient, (struct prefix_ipv6 *) p, &api); | |
1352 | } | |
718e3744 | 1353 | } |
1354 | #endif /* HAVE_IPV6 */ | |
1355 | } | |
1356 | ||
73ac8160 DS |
1357 | /* Announce all routes of a table to zebra */ |
1358 | void | |
1359 | bgp_zebra_announce_table (struct bgp *bgp, afi_t afi, safi_t safi) | |
1360 | { | |
1361 | struct bgp_node *rn; | |
1362 | struct bgp_table *table; | |
1363 | struct bgp_info *ri; | |
1364 | ||
1365 | table = bgp->rib[afi][safi]; | |
4a16ae86 | 1366 | if (!table) return; |
73ac8160 DS |
1367 | |
1368 | for (rn = bgp_table_top (table); rn; rn = bgp_route_next (rn)) | |
1369 | for (ri = rn->info; ri; ri = ri->next) | |
1370 | if (CHECK_FLAG (ri->flags, BGP_INFO_SELECTED) | |
1371 | && ri->type == ZEBRA_ROUTE_BGP | |
1372 | && ri->sub_type == BGP_ROUTE_NORMAL) | |
1373 | bgp_zebra_announce (&rn->p, ri, bgp, afi, safi); | |
1374 | } | |
1375 | ||
718e3744 | 1376 | void |
5a616c08 | 1377 | bgp_zebra_withdraw (struct prefix *p, struct bgp_info *info, safi_t safi) |
718e3744 | 1378 | { |
1379 | int flags; | |
1380 | struct peer *peer; | |
1381 | ||
1382 | if (zclient->sock < 0) | |
1383 | return; | |
1384 | ||
8bb0831e DS |
1385 | if ((p->family == AF_INET && !zclient->redist[AFI_IP][ZEBRA_ROUTE_BGP].enabled) |
1386 | || (p->family == AF_INET6 && !zclient->redist[AFI_IP6][ZEBRA_ROUTE_BGP].enabled)) | |
718e3744 | 1387 | return; |
1388 | ||
1389 | peer = info->peer; | |
4a16ae86 | 1390 | |
718e3744 | 1391 | flags = 0; |
1392 | ||
6d85b15b | 1393 | if (peer->sort == BGP_PEER_IBGP) |
718e3744 | 1394 | { |
1395 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); | |
1396 | SET_FLAG (flags, ZEBRA_FLAG_IBGP); | |
1397 | } | |
1398 | ||
6d85b15b | 1399 | if ((peer->sort == BGP_PEER_EBGP && peer->ttl != 1) |
907f92c8 DS |
1400 | || CHECK_FLAG (peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK) |
1401 | || bgp_flag_check(peer->bgp, BGP_FLAG_DISABLE_NH_CONNECTED_CHK)) | |
718e3744 | 1402 | SET_FLAG (flags, ZEBRA_FLAG_INTERNAL); |
1403 | ||
1404 | if (p->family == AF_INET) | |
1405 | { | |
1406 | struct zapi_ipv4 api; | |
1407 | struct in_addr *nexthop; | |
1408 | ||
1409 | api.flags = flags; | |
1410 | nexthop = &info->attr->nexthop; | |
1411 | ||
1412 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1413 | api.instance = 0; |
718e3744 | 1414 | api.message = 0; |
5a616c08 | 1415 | api.safi = safi; |
718e3744 | 1416 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
76145957 DS |
1417 | api.nexthop_num = 0; |
1418 | api.nexthop = NULL; | |
718e3744 | 1419 | api.ifindex_num = 0; |
1420 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
1421 | api.metric = info->attr->med; | |
1422 | ||
0d9551dc DS |
1423 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1424 | { | |
1425 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1426 | api.tag = info->attr->extra->tag; | |
1427 | } | |
1428 | ||
16286195 | 1429 | if (bgp_debug_zebra(p)) |
a39275d7 AS |
1430 | { |
1431 | char buf[2][INET_ADDRSTRLEN]; | |
0d9551dc | 1432 | zlog_debug("Zebra send: IPv4 route delete %s/%d nexthop %s metric %u tag %d", |
a39275d7 AS |
1433 | inet_ntop(AF_INET, &p->u.prefix4, buf[0], sizeof(buf[0])), |
1434 | p->prefixlen, | |
1435 | inet_ntop(AF_INET, nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
1436 | api.metric, |
1437 | api.tag); | |
a39275d7 AS |
1438 | } |
1439 | ||
0a589359 | 1440 | zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, zclient, |
1441 | (struct prefix_ipv4 *) p, &api); | |
718e3744 | 1442 | } |
1443 | #ifdef HAVE_IPV6 | |
1444 | /* We have to think about a IPv6 link-local address curse. */ | |
1445 | if (p->family == AF_INET6) | |
1446 | { | |
1447 | struct zapi_ipv6 api; | |
1448 | unsigned int ifindex; | |
1449 | struct in6_addr *nexthop; | |
fb982c25 PJ |
1450 | |
1451 | assert (info->attr->extra); | |
1452 | ||
718e3744 | 1453 | ifindex = 0; |
1454 | nexthop = NULL; | |
1455 | ||
1456 | /* Only global address nexthop exists. */ | |
801a9bcc | 1457 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL) |
fb982c25 | 1458 | nexthop = &info->attr->extra->mp_nexthop_global; |
718e3744 | 1459 | |
1460 | /* If both global and link-local address present. */ | |
801a9bcc | 1461 | if (info->attr->extra->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL) |
718e3744 | 1462 | { |
fb982c25 | 1463 | nexthop = &info->attr->extra->mp_nexthop_local; |
718e3744 | 1464 | if (info->peer->nexthop.ifp) |
1465 | ifindex = info->peer->nexthop.ifp->ifindex; | |
1466 | } | |
1467 | ||
1468 | if (nexthop == NULL) | |
1469 | return; | |
1470 | ||
1471 | if (IN6_IS_ADDR_LINKLOCAL (nexthop) && ! ifindex) | |
a80beece DS |
1472 | if (info->peer->conf_if || info->peer->ifname) |
1473 | ifindex = if_nametoindex (info->peer->conf_if ? info->peer->conf_if : info->peer->ifname); | |
718e3744 | 1474 | |
1475 | api.flags = flags; | |
1476 | api.type = ZEBRA_ROUTE_BGP; | |
7c8ff89e | 1477 | api.instance = 0; |
718e3744 | 1478 | api.message = 0; |
c7ec179a | 1479 | api.safi = safi; |
718e3744 | 1480 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
1481 | api.nexthop_num = 1; | |
1482 | api.nexthop = &nexthop; | |
1483 | SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX); | |
1484 | api.ifindex_num = 1; | |
1485 | api.ifindex = &ifindex; | |
1486 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
1487 | api.metric = info->attr->med; | |
1488 | ||
0d9551dc DS |
1489 | if ((info->attr->extra) && (info->attr->extra->tag != 0)) |
1490 | { | |
1491 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
1492 | api.tag = info->attr->extra->tag; | |
1493 | } | |
1494 | ||
16286195 | 1495 | if (bgp_debug_zebra(p)) |
a39275d7 AS |
1496 | { |
1497 | char buf[2][INET6_ADDRSTRLEN]; | |
0d9551dc | 1498 | zlog_debug("Zebra send: IPv6 route delete %s/%d nexthop %s metric %u tag %d", |
a39275d7 AS |
1499 | inet_ntop(AF_INET6, &p->u.prefix6, buf[0], sizeof(buf[0])), |
1500 | p->prefixlen, | |
1501 | inet_ntop(AF_INET6, nexthop, buf[1], sizeof(buf[1])), | |
0d9551dc DS |
1502 | api.metric, |
1503 | api.tag); | |
a39275d7 AS |
1504 | } |
1505 | ||
0a589359 | 1506 | zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, |
1507 | (struct prefix_ipv6 *) p, &api); | |
718e3744 | 1508 | } |
1509 | #endif /* HAVE_IPV6 */ | |
1510 | } | |
7c8ff89e DS |
1511 | struct bgp_redist * |
1512 | bgp_redist_lookup (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1513 | { | |
1514 | struct list *red_list; | |
1515 | struct listnode *node; | |
1516 | struct bgp_redist *red; | |
1517 | ||
1518 | red_list = bgp->redist[afi][type]; | |
1519 | if (!red_list) | |
1520 | return(NULL); | |
1521 | ||
1522 | for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) | |
1523 | if (red->instance == instance) | |
1524 | return red; | |
1525 | ||
1526 | return NULL; | |
1527 | } | |
1528 | ||
1529 | struct bgp_redist * | |
1530 | bgp_redist_add (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1531 | { | |
1532 | struct list *red_list; | |
1533 | struct bgp_redist *red; | |
1534 | ||
1535 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1536 | if (red) | |
1537 | return red; | |
1538 | ||
1539 | if (!bgp->redist[afi][type]) | |
1540 | bgp->redist[afi][type] = list_new(); | |
1541 | ||
1542 | red_list = bgp->redist[afi][type]; | |
1543 | red = (struct bgp_redist *)calloc (1, sizeof(struct bgp_redist)); | |
1544 | red->instance = instance; | |
1545 | ||
1546 | listnode_add(red_list, red); | |
1547 | ||
1548 | return red; | |
1549 | } | |
1550 | ||
1551 | static void | |
1552 | bgp_redist_del (struct bgp *bgp, afi_t afi, u_char type, u_short instance) | |
1553 | { | |
1554 | struct bgp_redist *red; | |
1555 | ||
1556 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1557 | ||
1558 | if (red) | |
1559 | { | |
1560 | listnode_delete(bgp->redist[afi][type], red); | |
1561 | if (!bgp->redist[afi][type]->count) | |
1562 | { | |
1563 | list_free(bgp->redist[afi][type]); | |
1564 | bgp->redist[afi][type] = NULL; | |
1565 | } | |
1566 | } | |
1567 | } | |
6b0655a2 | 1568 | |
718e3744 | 1569 | /* Other routes redistribution into BGP. */ |
1570 | int | |
8bb0831e | 1571 | bgp_redistribute_set (afi_t afi, int type, u_short instance) |
718e3744 | 1572 | { |
718e3744 | 1573 | |
1574 | /* Return if already redistribute flag is set. */ | |
8bb0831e | 1575 | if (redist_check_instance(&zclient->redist[afi][type], instance)) |
718e3744 | 1576 | return CMD_WARNING; |
1577 | ||
8bb0831e | 1578 | redist_add_instance(&zclient->redist[afi][type], instance); |
718e3744 | 1579 | |
1580 | /* Return if zebra connection is not established. */ | |
1581 | if (zclient->sock < 0) | |
1582 | return CMD_WARNING; | |
a39275d7 | 1583 | |
16286195 | 1584 | if (BGP_DEBUG (zebra, ZEBRA)) |
8bb0831e DS |
1585 | zlog_debug("Zebra send: redistribute add afi %d %s %d", afi, |
1586 | zebra_route_string(type), instance); | |
518f0eb1 | 1587 | |
718e3744 | 1588 | /* Send distribute add message to zebra. */ |
8bb0831e | 1589 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, instance); |
718e3744 | 1590 | |
1591 | return CMD_SUCCESS; | |
1592 | } | |
1593 | ||
518f0eb1 | 1594 | int |
7c8ff89e | 1595 | bgp_redistribute_resend (struct bgp *bgp, afi_t afi, int type, u_short instance) |
518f0eb1 DS |
1596 | { |
1597 | /* Return if zebra connection is not established. */ | |
1598 | if (zclient->sock < 0) | |
1599 | return -1; | |
1600 | ||
16286195 | 1601 | if (BGP_DEBUG (zebra, ZEBRA)) |
8bb0831e DS |
1602 | zlog_debug("Zebra send: redistribute delete/add afi %d %s %d", afi, |
1603 | zebra_route_string(type), instance); | |
518f0eb1 DS |
1604 | |
1605 | /* Send distribute add message to zebra. */ | |
8bb0831e DS |
1606 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, instance); |
1607 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, instance); | |
518f0eb1 DS |
1608 | |
1609 | return 0; | |
1610 | } | |
1611 | ||
718e3744 | 1612 | /* Redistribute with route-map specification. */ |
1613 | int | |
7c8ff89e | 1614 | bgp_redistribute_rmap_set (struct bgp_redist *red, const char *name) |
718e3744 | 1615 | { |
7c8ff89e DS |
1616 | if (red->rmap.name |
1617 | && (strcmp (red->rmap.name, name) == 0)) | |
718e3744 | 1618 | return 0; |
1619 | ||
7c8ff89e DS |
1620 | if (red->rmap.name) |
1621 | free (red->rmap.name); | |
1622 | red->rmap.name = strdup (name); | |
1623 | red->rmap.map = route_map_lookup_by_name (name); | |
718e3744 | 1624 | |
1625 | return 1; | |
1626 | } | |
1627 | ||
1628 | /* Redistribute with metric specification. */ | |
1629 | int | |
7c8ff89e | 1630 | bgp_redistribute_metric_set (struct bgp_redist *red, u_int32_t metric) |
718e3744 | 1631 | { |
7c8ff89e DS |
1632 | if (red->redist_metric_flag |
1633 | && red->redist_metric == metric) | |
718e3744 | 1634 | return 0; |
1635 | ||
7c8ff89e DS |
1636 | red->redist_metric_flag = 1; |
1637 | red->redist_metric = metric; | |
718e3744 | 1638 | |
1639 | return 1; | |
1640 | } | |
1641 | ||
1642 | /* Unset redistribution. */ | |
1643 | int | |
7c8ff89e | 1644 | bgp_redistribute_unset (struct bgp *bgp, afi_t afi, int type, u_short instance) |
718e3744 | 1645 | { |
7c8ff89e DS |
1646 | struct bgp_redist *red; |
1647 | ||
1648 | red = bgp_redist_lookup(bgp, afi, type, instance); | |
1649 | if (!red) | |
1650 | return CMD_SUCCESS; | |
718e3744 | 1651 | |
1652 | /* Unset route-map. */ | |
7c8ff89e DS |
1653 | if (red->rmap.name) |
1654 | free (red->rmap.name); | |
1655 | red->rmap.name = NULL; | |
1656 | red->rmap.map = NULL; | |
718e3744 | 1657 | |
1658 | /* Unset metric. */ | |
7c8ff89e DS |
1659 | red->redist_metric_flag = 0; |
1660 | red->redist_metric = 0; | |
1661 | ||
1662 | bgp_redist_del(bgp, afi, type, instance); | |
718e3744 | 1663 | |
1664 | /* Return if zebra connection is disabled. */ | |
8bb0831e | 1665 | if (!redist_check_instance(&zclient->redist[afi][type], instance)) |
718e3744 | 1666 | return CMD_WARNING; |
8bb0831e | 1667 | redist_del_instance(&zclient->redist[afi][type], instance); |
718e3744 | 1668 | |
8bb0831e | 1669 | if (zclient->sock >= 0) |
a39275d7 AS |
1670 | { |
1671 | /* Send distribute delete message to zebra. */ | |
16286195 | 1672 | if (BGP_DEBUG (zebra, ZEBRA)) |
8bb0831e DS |
1673 | zlog_debug("Zebra send: redistribute delete afi %d %s %d", |
1674 | afi, zebra_route_string(type), instance); | |
1675 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type, instance); | |
a39275d7 | 1676 | } |
718e3744 | 1677 | |
1678 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
7c8ff89e | 1679 | bgp_redistribute_withdraw (bgp, afi, type, instance); |
718e3744 | 1680 | |
1681 | return CMD_SUCCESS; | |
1682 | } | |
1683 | ||
718e3744 | 1684 | void |
94f2b392 | 1685 | bgp_zclient_reset (void) |
718e3744 | 1686 | { |
1687 | zclient_reset (zclient); | |
1688 | } | |
1689 | ||
1690 | void | |
94f2b392 | 1691 | bgp_zebra_init (void) |
718e3744 | 1692 | { |
1693 | /* Set default values. */ | |
1694 | zclient = zclient_new (); | |
7c8ff89e | 1695 | zclient_init (zclient, ZEBRA_ROUTE_BGP, 0); |
18a6dce6 | 1696 | zclient->router_id_update = bgp_router_id_update; |
718e3744 | 1697 | zclient->interface_add = bgp_interface_add; |
1698 | zclient->interface_delete = bgp_interface_delete; | |
1699 | zclient->interface_address_add = bgp_interface_address_add; | |
1700 | zclient->interface_address_delete = bgp_interface_address_delete; | |
a80beece DS |
1701 | zclient->interface_nbr_address_add = bgp_interface_nbr_address_add; |
1702 | zclient->interface_nbr_address_delete = bgp_interface_nbr_address_delete; | |
718e3744 | 1703 | zclient->ipv4_route_add = zebra_read_ipv4; |
1704 | zclient->ipv4_route_delete = zebra_read_ipv4; | |
1705 | zclient->interface_up = bgp_interface_up; | |
1706 | zclient->interface_down = bgp_interface_down; | |
d5a5c8f0 | 1707 | zclient->interface_bfd_dest_down = bgp_interface_bfd_dest_down; |
718e3744 | 1708 | #ifdef HAVE_IPV6 |
1709 | zclient->ipv6_route_add = zebra_read_ipv6; | |
1710 | zclient->ipv6_route_delete = zebra_read_ipv6; | |
1711 | #endif /* HAVE_IPV6 */ | |
fb018d25 | 1712 | zclient->nexthop_update = bgp_read_nexthop_update; |
078430f6 | 1713 | zclient->import_check_update = bgp_read_import_check_update; |
718e3744 | 1714 | |
1715 | /* Interface related init. */ | |
1716 | if_init (); | |
8196f13d JB |
1717 | |
1718 | bgp_nexthop_buf = stream_new(BGP_NEXTHOP_BUF_SIZE); | |
431aa9f9 | 1719 | bgp_ifindices_buf = stream_new(BGP_IFINDICES_BUF_SIZE); |
718e3744 | 1720 | } |