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8429abe0 RW |
1 | /* $OpenBSD$ */ |
2 | ||
3 | /* | |
4 | * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org> | |
5 | * Copyright (c) 2004, 2005 Claudio Jeker <claudio@openbsd.org> | |
6 | * Copyright (c) 2004 Esben Norby <norby@openbsd.org> | |
7 | * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> | |
8 | * | |
9 | * Permission to use, copy, modify, and distribute this software for any | |
10 | * purpose with or without fee is hereby granted, provided that the above | |
11 | * copyright notice and this permission notice appear in all copies. | |
12 | * | |
13 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
14 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
15 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
16 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
17 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
19 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
20 | */ | |
21 | ||
eac6e3f0 | 22 | #include <zebra.h> |
8429abe0 RW |
23 | |
24 | #include "ldp.h" | |
25 | #include "ldpd.h" | |
26 | #include "ldpe.h" | |
27 | #include "log.h" | |
28 | #include "lde.h" | |
eac6e3f0 | 29 | #include "ldp_debug.h" |
077d336a | 30 | #include "rlfa.h" |
8429abe0 | 31 | |
eac6e3f0 RW |
32 | #include <lib/log.h> |
33 | #include "memory.h" | |
34 | #include "privs.h" | |
35 | #include "sigevent.h" | |
36 | #include "mpls.h" | |
fea12efb | 37 | #include <lib/linklist.h> |
38 | #include "zclient.h" | |
39 | #include "stream.h" | |
40 | #include "network.h" | |
689f5a8c | 41 | #include "libfrr.h" |
eac6e3f0 RW |
42 | |
43 | static void lde_shutdown(void); | |
44 | static int lde_dispatch_imsg(struct thread *); | |
45 | static int lde_dispatch_parent(struct thread *); | |
45926e58 RZ |
46 | static __inline int lde_nbr_compare(const struct lde_nbr *, |
47 | const struct lde_nbr *); | |
8429abe0 RW |
48 | static struct lde_nbr *lde_nbr_new(uint32_t, struct lde_nbr *); |
49 | static void lde_nbr_del(struct lde_nbr *); | |
50 | static struct lde_nbr *lde_nbr_find(uint32_t); | |
51 | static void lde_nbr_clear(void); | |
52 | static void lde_nbr_addr_update(struct lde_nbr *, | |
53 | struct lde_addr *, int); | |
45926e58 RZ |
54 | static __inline int lde_map_compare(const struct lde_map *, |
55 | const struct lde_map *); | |
8429abe0 RW |
56 | static void lde_map_free(void *); |
57 | static int lde_address_add(struct lde_nbr *, struct lde_addr *); | |
58 | static int lde_address_del(struct lde_nbr *, struct lde_addr *); | |
59 | static void lde_address_list_free(struct lde_nbr *); | |
9d694b0b | 60 | static void zclient_sync_init(void); |
fea12efb | 61 | static void lde_label_list_init(void); |
5afba51d | 62 | static int lde_get_label_chunk(void); |
fea12efb | 63 | static void on_get_label_chunk_response(uint32_t start, uint32_t end); |
64 | static uint32_t lde_get_next_label(void); | |
aff1743c KS |
65 | static bool lde_fec_connected(const struct fec_node *); |
66 | static bool lde_fec_outside_mpls_network(const struct fec_node *); | |
2d1aa1e8 | 67 | static void lde_check_filter_af(int, struct ldpd_af_conf *, |
68 | const char *); | |
8429abe0 RW |
69 | |
70 | RB_GENERATE(nbr_tree, lde_nbr, entry, lde_nbr_compare) | |
d3e1887a | 71 | RB_GENERATE(lde_map_head, lde_map, entry, lde_map_compare) |
8429abe0 RW |
72 | |
73 | struct ldpd_conf *ldeconf; | |
74 | struct nbr_tree lde_nbrs = RB_INITIALIZER(&lde_nbrs); | |
75 | ||
76 | static struct imsgev *iev_ldpe; | |
59c5b83b | 77 | static struct imsgev iev_main_sync_data; |
28e8294c | 78 | static struct imsgev *iev_main, *iev_main_sync; |
8429abe0 | 79 | |
eac6e3f0 RW |
80 | /* lde privileges */ |
81 | static zebra_capabilities_t _caps_p [] = | |
8429abe0 | 82 | { |
342213ea | 83 | ZCAP_NET_ADMIN |
eac6e3f0 | 84 | }; |
8429abe0 | 85 | |
eac6e3f0 RW |
86 | static struct zebra_privs_t lde_privs = |
87 | { | |
eac6e3f0 RW |
88 | #if defined(VTY_GROUP) |
89 | .vty_group = VTY_GROUP, | |
90 | #endif | |
91 | .caps_p = _caps_p, | |
92 | .cap_num_p = array_size(_caps_p), | |
93 | .cap_num_i = 0 | |
94 | }; | |
95 | ||
fea12efb | 96 | /* List of chunks of labels externally assigned by Zebra */ |
5afba51d RW |
97 | static struct list *label_chunk_list; |
98 | static struct listnode *current_label_chunk; | |
99 | ||
100 | /* Synchronous zclient to request labels */ | |
101 | static struct zclient *zclient_sync; | |
fea12efb | 102 | |
eac6e3f0 RW |
103 | /* SIGINT / SIGTERM handler. */ |
104 | static void | |
105 | sigint(void) | |
106 | { | |
107 | lde_shutdown(); | |
8429abe0 RW |
108 | } |
109 | ||
7cc91e67 | 110 | static struct frr_signal_t lde_signals[] = |
eac6e3f0 | 111 | { |
1e7e440f RW |
112 | { |
113 | .signal = SIGHUP, | |
114 | /* ignore */ | |
115 | }, | |
eac6e3f0 RW |
116 | { |
117 | .signal = SIGINT, | |
118 | .handler = &sigint, | |
119 | }, | |
120 | { | |
121 | .signal = SIGTERM, | |
122 | .handler = &sigint, | |
123 | }, | |
124 | }; | |
125 | ||
8429abe0 RW |
126 | /* label decision engine */ |
127 | void | |
274f5abf | 128 | lde(void) |
8429abe0 | 129 | { |
eac6e3f0 | 130 | #ifdef HAVE_SETPROCTITLE |
8429abe0 | 131 | setproctitle("label decision engine"); |
eac6e3f0 | 132 | #endif |
8429abe0 | 133 | ldpd_process = PROC_LDE_ENGINE; |
fa68f9da | 134 | log_procname = log_procnames[PROC_LDE_ENGINE]; |
8429abe0 | 135 | |
f9a4d683 | 136 | master = frr_init(); |
adf8924d DL |
137 | /* no frr_config_fork() here, allow frr_pthread to create threads */ |
138 | frr_is_after_fork = true; | |
8429abe0 RW |
139 | |
140 | /* setup signal handler */ | |
eac6e3f0 | 141 | signal_init(master, array_size(lde_signals), lde_signals); |
8429abe0 | 142 | |
28e8294c RW |
143 | /* setup pipes and event handlers to the parent process */ |
144 | if ((iev_main = calloc(1, sizeof(struct imsgev))) == NULL) | |
8429abe0 | 145 | fatal(NULL); |
28e8294c | 146 | imsg_init(&iev_main->ibuf, LDPD_FD_ASYNC); |
eac6e3f0 | 147 | iev_main->handler_read = lde_dispatch_parent; |
66e78ae6 QY |
148 | thread_add_read(master, iev_main->handler_read, iev_main, iev_main->ibuf.fd, |
149 | &iev_main->ev_read); | |
eac6e3f0 | 150 | iev_main->handler_write = ldp_write_handler; |
28e8294c | 151 | |
59c5b83b DS |
152 | memset(&iev_main_sync_data, 0, sizeof(iev_main_sync_data)); |
153 | iev_main_sync = &iev_main_sync_data; | |
28e8294c | 154 | imsg_init(&iev_main_sync->ibuf, LDPD_FD_SYNC); |
eac6e3f0 | 155 | |
274f5abf RW |
156 | /* create base configuration */ |
157 | ldeconf = config_new_empty(); | |
158 | ||
f9a4d683 | 159 | struct thread thread; |
274f5abf RW |
160 | while (thread_fetch(master, &thread)) |
161 | thread_call(&thread); | |
f9a4d683 KS |
162 | |
163 | /* NOTREACHED */ | |
164 | return; | |
274f5abf RW |
165 | } |
166 | ||
167 | void | |
168 | lde_init(struct ldpd_init *init) | |
169 | { | |
170 | /* drop privileges */ | |
af7e63a3 RW |
171 | lde_privs.user = init->user; |
172 | lde_privs.group = init->group; | |
37a1f2fb | 173 | zprivs_preinit(&lde_privs); |
274f5abf RW |
174 | zprivs_init(&lde_privs); |
175 | ||
eac6e3f0 | 176 | /* start the LIB garbage collector */ |
8429abe0 RW |
177 | lde_gc_start_timer(); |
178 | ||
fea12efb | 179 | /* Init synchronous zclient and label list */ |
689f5a8c DL |
180 | frr_zclient_addr(&zclient_addr, &zclient_addr_len, |
181 | init->zclient_serv_path); | |
9d694b0b | 182 | zclient_sync_init(); |
8429abe0 RW |
183 | } |
184 | ||
eac6e3f0 | 185 | static void |
8429abe0 RW |
186 | lde_shutdown(void) |
187 | { | |
188 | /* close pipes */ | |
835a7376 RW |
189 | if (iev_ldpe) { |
190 | msgbuf_clear(&iev_ldpe->ibuf.w); | |
191 | close(iev_ldpe->ibuf.fd); | |
50732983 | 192 | iev_ldpe->ibuf.fd = -1; |
835a7376 | 193 | } |
8429abe0 RW |
194 | msgbuf_clear(&iev_main->ibuf.w); |
195 | close(iev_main->ibuf.fd); | |
50732983 | 196 | iev_main->ibuf.fd = -1; |
28e8294c RW |
197 | msgbuf_clear(&iev_main_sync->ibuf.w); |
198 | close(iev_main_sync->ibuf.fd); | |
50732983 | 199 | iev_main_sync->ibuf.fd = -1; |
8429abe0 RW |
200 | |
201 | lde_gc_stop_timer(); | |
202 | lde_nbr_clear(); | |
203 | fec_tree_clear(); | |
204 | ||
205 | config_clear(ldeconf); | |
206 | ||
835a7376 RW |
207 | if (iev_ldpe) |
208 | free(iev_ldpe); | |
8429abe0 RW |
209 | free(iev_main); |
210 | ||
211 | log_info("label decision engine exiting"); | |
b12a63f1 MS |
212 | |
213 | zlog_fini(); | |
8429abe0 RW |
214 | exit(0); |
215 | } | |
216 | ||
217 | /* imesg */ | |
eac6e3f0 | 218 | int |
8429abe0 RW |
219 | lde_imsg_compose_parent(int type, pid_t pid, void *data, uint16_t datalen) |
220 | { | |
50732983 RW |
221 | if (iev_main->ibuf.fd == -1) |
222 | return (0); | |
8429abe0 RW |
223 | return (imsg_compose_event(iev_main, type, 0, pid, -1, data, datalen)); |
224 | } | |
225 | ||
f2232fdf RW |
226 | void |
227 | lde_imsg_compose_parent_sync(int type, pid_t pid, void *data, uint16_t datalen) | |
228 | { | |
50732983 RW |
229 | if (iev_main_sync->ibuf.fd == -1) |
230 | return; | |
f2232fdf RW |
231 | imsg_compose_event(iev_main_sync, type, 0, pid, -1, data, datalen); |
232 | imsg_flush(&iev_main_sync->ibuf); | |
233 | } | |
234 | ||
8429abe0 RW |
235 | int |
236 | lde_imsg_compose_ldpe(int type, uint32_t peerid, pid_t pid, void *data, | |
237 | uint16_t datalen) | |
238 | { | |
50732983 RW |
239 | if (iev_ldpe->ibuf.fd == -1) |
240 | return (0); | |
8429abe0 RW |
241 | return (imsg_compose_event(iev_ldpe, type, peerid, pid, |
242 | -1, data, datalen)); | |
243 | } | |
244 | ||
245 | /* ARGSUSED */ | |
eac6e3f0 RW |
246 | static int |
247 | lde_dispatch_imsg(struct thread *thread) | |
8429abe0 | 248 | { |
eac6e3f0 | 249 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
250 | struct imsgbuf *ibuf = &iev->ibuf; |
251 | struct imsg imsg; | |
252 | struct lde_nbr *ln; | |
236c6935 RW |
253 | struct map *map; |
254 | struct lde_addr *lde_addr; | |
255 | struct notify_msg *nm; | |
8429abe0 | 256 | ssize_t n; |
eac6e3f0 | 257 | int shut = 0; |
8429abe0 | 258 | |
eac6e3f0 RW |
259 | iev->ev_read = NULL; |
260 | ||
261 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
262 | fatal("imsg_read error"); | |
263 | if (n == 0) /* connection closed */ | |
264 | shut = 1; | |
8429abe0 RW |
265 | |
266 | for (;;) { | |
267 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
268 | fatal("lde_dispatch_imsg: imsg_get error"); | |
269 | if (n == 0) | |
270 | break; | |
271 | ||
272 | switch (imsg.hdr.type) { | |
273 | case IMSG_LABEL_MAPPING_FULL: | |
274 | ln = lde_nbr_find(imsg.hdr.peerid); | |
275 | if (ln == NULL) { | |
276 | log_debug("%s: cannot find lde neighbor", | |
277 | __func__); | |
278 | break; | |
279 | } | |
280 | ||
281 | fec_snap(ln); | |
282 | break; | |
283 | case IMSG_LABEL_MAPPING: | |
284 | case IMSG_LABEL_REQUEST: | |
285 | case IMSG_LABEL_RELEASE: | |
286 | case IMSG_LABEL_WITHDRAW: | |
287 | case IMSG_LABEL_ABORT: | |
236c6935 RW |
288 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
289 | sizeof(struct map)) | |
8429abe0 | 290 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 291 | map = imsg.data; |
8429abe0 RW |
292 | |
293 | ln = lde_nbr_find(imsg.hdr.peerid); | |
294 | if (ln == NULL) { | |
295 | log_debug("%s: cannot find lde neighbor", | |
296 | __func__); | |
297 | break; | |
298 | } | |
299 | ||
300 | switch (imsg.hdr.type) { | |
301 | case IMSG_LABEL_MAPPING: | |
4272a064 | 302 | lde_check_mapping(map, ln, 1); |
8429abe0 RW |
303 | break; |
304 | case IMSG_LABEL_REQUEST: | |
236c6935 | 305 | lde_check_request(map, ln); |
8429abe0 RW |
306 | break; |
307 | case IMSG_LABEL_RELEASE: | |
236c6935 | 308 | lde_check_release(map, ln); |
8429abe0 RW |
309 | break; |
310 | case IMSG_LABEL_WITHDRAW: | |
236c6935 | 311 | lde_check_withdraw(map, ln); |
8429abe0 RW |
312 | break; |
313 | case IMSG_LABEL_ABORT: | |
314 | /* not necessary */ | |
315 | break; | |
316 | } | |
317 | break; | |
318 | case IMSG_ADDRESS_ADD: | |
236c6935 RW |
319 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
320 | sizeof(struct lde_addr)) | |
8429abe0 | 321 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 322 | lde_addr = imsg.data; |
8429abe0 RW |
323 | |
324 | ln = lde_nbr_find(imsg.hdr.peerid); | |
325 | if (ln == NULL) { | |
326 | log_debug("%s: cannot find lde neighbor", | |
327 | __func__); | |
328 | break; | |
329 | } | |
236c6935 | 330 | if (lde_address_add(ln, lde_addr) < 0) { |
3efd0893 | 331 | log_debug("%s: cannot add address %s, it already exists", __func__, |
236c6935 | 332 | log_addr(lde_addr->af, &lde_addr->addr)); |
8429abe0 RW |
333 | } |
334 | break; | |
335 | case IMSG_ADDRESS_DEL: | |
236c6935 RW |
336 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
337 | sizeof(struct lde_addr)) | |
8429abe0 | 338 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 339 | lde_addr = imsg.data; |
8429abe0 RW |
340 | |
341 | ln = lde_nbr_find(imsg.hdr.peerid); | |
342 | if (ln == NULL) { | |
343 | log_debug("%s: cannot find lde neighbor", | |
344 | __func__); | |
345 | break; | |
346 | } | |
236c6935 | 347 | if (lde_address_del(ln, lde_addr) < 0) { |
3efd0893 | 348 | log_debug("%s: cannot delete address %s, it does not exist", __func__, |
236c6935 | 349 | log_addr(lde_addr->af, &lde_addr->addr)); |
8429abe0 RW |
350 | } |
351 | break; | |
352 | case IMSG_NOTIFICATION: | |
236c6935 RW |
353 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
354 | sizeof(struct notify_msg)) | |
8429abe0 | 355 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 356 | nm = imsg.data; |
8429abe0 RW |
357 | |
358 | ln = lde_nbr_find(imsg.hdr.peerid); | |
359 | if (ln == NULL) { | |
360 | log_debug("%s: cannot find lde neighbor", | |
361 | __func__); | |
362 | break; | |
363 | } | |
364 | ||
236c6935 | 365 | switch (nm->status_code) { |
8429abe0 | 366 | case S_PW_STATUS: |
236c6935 | 367 | l2vpn_recv_pw_status(ln, nm); |
8429abe0 | 368 | break; |
257799cd RW |
369 | case S_ENDOFLIB: |
370 | /* | |
371 | * Do nothing for now. Should be useful in | |
372 | * the future when we implement LDP-IGP | |
373 | * Synchronization (RFC 5443) and Graceful | |
374 | * Restart (RFC 3478). | |
375 | */ | |
8429abe0 RW |
376 | default: |
377 | break; | |
378 | } | |
379 | break; | |
380 | case IMSG_NEIGHBOR_UP: | |
381 | if (imsg.hdr.len - IMSG_HEADER_SIZE != | |
382 | sizeof(struct lde_nbr)) | |
383 | fatalx("lde_dispatch_imsg: wrong imsg len"); | |
384 | ||
385 | if (lde_nbr_find(imsg.hdr.peerid)) | |
3efd0893 | 386 | fatalx("lde_dispatch_imsg: neighbor already exists"); |
8429abe0 RW |
387 | lde_nbr_new(imsg.hdr.peerid, imsg.data); |
388 | break; | |
389 | case IMSG_NEIGHBOR_DOWN: | |
390 | lde_nbr_del(lde_nbr_find(imsg.hdr.peerid)); | |
391 | break; | |
392 | case IMSG_CTL_SHOW_LIB: | |
393 | rt_dump(imsg.hdr.pid); | |
394 | ||
395 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
396 | imsg.hdr.pid, NULL, 0); | |
397 | break; | |
398 | case IMSG_CTL_SHOW_L2VPN_PW: | |
399 | l2vpn_pw_ctl(imsg.hdr.pid); | |
400 | ||
401 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
402 | imsg.hdr.pid, NULL, 0); | |
403 | break; | |
404 | case IMSG_CTL_SHOW_L2VPN_BINDING: | |
405 | l2vpn_binding_ctl(imsg.hdr.pid); | |
406 | ||
407 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
408 | imsg.hdr.pid, NULL, 0); | |
409 | break; | |
8429abe0 RW |
410 | default: |
411 | log_debug("%s: unexpected imsg %d", __func__, | |
412 | imsg.hdr.type); | |
413 | break; | |
414 | } | |
415 | imsg_free(&imsg); | |
416 | } | |
417 | if (!shut) | |
418 | imsg_event_add(iev); | |
419 | else { | |
eac6e3f0 | 420 | /* this pipe is dead, so remove the event handlers and exit */ |
50478845 MS |
421 | thread_cancel(&iev->ev_read); |
422 | thread_cancel(&iev->ev_write); | |
eac6e3f0 | 423 | lde_shutdown(); |
8429abe0 | 424 | } |
eac6e3f0 RW |
425 | |
426 | return (0); | |
8429abe0 RW |
427 | } |
428 | ||
429 | /* ARGSUSED */ | |
eac6e3f0 RW |
430 | static int |
431 | lde_dispatch_parent(struct thread *thread) | |
8429abe0 RW |
432 | { |
433 | static struct ldpd_conf *nconf; | |
52b530fc | 434 | struct iface *iface, *niface; |
8429abe0 RW |
435 | struct tnbr *ntnbr; |
436 | struct nbr_params *nnbrp; | |
52b530fc RW |
437 | static struct l2vpn *l2vpn, *nl2vpn; |
438 | struct l2vpn_if *lif, *nlif; | |
439 | struct l2vpn_pw *pw, *npw; | |
8429abe0 | 440 | struct imsg imsg; |
52b530fc | 441 | struct kif *kif; |
236c6935 | 442 | struct kroute *kr; |
11bf8e13 | 443 | int fd; |
eac6e3f0 | 444 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
445 | struct imsgbuf *ibuf = &iev->ibuf; |
446 | ssize_t n; | |
447 | int shut = 0; | |
448 | struct fec fec; | |
2d1aa1e8 | 449 | struct ldp_access *laccess; |
077d336a RW |
450 | struct ldp_rlfa_node *rnode, *rntmp; |
451 | struct ldp_rlfa_client *rclient; | |
452 | struct zapi_rlfa_request *rlfa_req; | |
453 | struct zapi_rlfa_igp *rlfa_igp; | |
8429abe0 | 454 | |
eac6e3f0 RW |
455 | iev->ev_read = NULL; |
456 | ||
457 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
458 | fatal("imsg_read error"); | |
459 | if (n == 0) /* connection closed */ | |
460 | shut = 1; | |
8429abe0 RW |
461 | |
462 | for (;;) { | |
463 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
464 | fatal("lde_dispatch_parent: imsg_get error"); | |
465 | if (n == 0) | |
466 | break; | |
467 | ||
468 | switch (imsg.hdr.type) { | |
52b530fc RW |
469 | case IMSG_IFSTATUS: |
470 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
471 | sizeof(struct kif)) | |
472 | fatalx("IFSTATUS imsg with wrong len"); | |
473 | kif = imsg.data; | |
474 | ||
475 | iface = if_lookup_name(ldeconf, kif->ifname); | |
476 | if (iface) { | |
477 | if_update_info(iface, kif); | |
95535717 | 478 | |
479 | /* if up see if any labels need to be updated */ | |
480 | if (kif->operative) | |
481 | lde_route_update(iface, AF_UNSPEC); | |
52b530fc RW |
482 | break; |
483 | } | |
484 | ||
485 | RB_FOREACH(l2vpn, l2vpn_head, &ldeconf->l2vpn_tree) { | |
486 | lif = l2vpn_if_find(l2vpn, kif->ifname); | |
487 | if (lif) { | |
488 | l2vpn_if_update_info(lif, kif); | |
489 | break; | |
490 | } | |
491 | pw = l2vpn_pw_find(l2vpn, kif->ifname); | |
492 | if (pw) { | |
493 | l2vpn_pw_update_info(pw, kif); | |
494 | break; | |
495 | } | |
496 | } | |
497 | break; | |
87b5f1b7 RW |
498 | case IMSG_PW_UPDATE: |
499 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
500 | sizeof(struct zapi_pw_status)) | |
501 | fatalx("PW_UPDATE imsg with wrong len"); | |
502 | ||
503 | if (l2vpn_pw_status_update(imsg.data) != 0) | |
504 | log_warnx("%s: error updating PW status", | |
505 | __func__); | |
506 | break; | |
8429abe0 | 507 | case IMSG_NETWORK_ADD: |
8cb1fc45 | 508 | case IMSG_NETWORK_UPDATE: |
236c6935 RW |
509 | if (imsg.hdr.len != IMSG_HEADER_SIZE + |
510 | sizeof(struct kroute)) { | |
8429abe0 RW |
511 | log_warnx("%s: wrong imsg len", __func__); |
512 | break; | |
513 | } | |
236c6935 | 514 | kr = imsg.data; |
8429abe0 | 515 | |
236c6935 | 516 | switch (kr->af) { |
8429abe0 RW |
517 | case AF_INET: |
518 | fec.type = FEC_TYPE_IPV4; | |
236c6935 RW |
519 | fec.u.ipv4.prefix = kr->prefix.v4; |
520 | fec.u.ipv4.prefixlen = kr->prefixlen; | |
8429abe0 RW |
521 | break; |
522 | case AF_INET6: | |
523 | fec.type = FEC_TYPE_IPV6; | |
236c6935 RW |
524 | fec.u.ipv6.prefix = kr->prefix.v6; |
525 | fec.u.ipv6.prefixlen = kr->prefixlen; | |
8429abe0 RW |
526 | break; |
527 | default: | |
528 | fatalx("lde_dispatch_parent: unknown af"); | |
529 | } | |
530 | ||
531 | switch (imsg.hdr.type) { | |
532 | case IMSG_NETWORK_ADD: | |
236c6935 | 533 | lde_kernel_insert(&fec, kr->af, &kr->nexthop, |
e132dea0 RW |
534 | kr->ifindex, kr->route_type, |
535 | kr->route_instance, | |
236c6935 | 536 | kr->flags & F_CONNECTED, NULL); |
8429abe0 | 537 | break; |
8cb1fc45 RW |
538 | case IMSG_NETWORK_UPDATE: |
539 | lde_kernel_update(&fec); | |
8429abe0 RW |
540 | break; |
541 | } | |
542 | break; | |
543 | case IMSG_SOCKET_IPC: | |
544 | if (iev_ldpe) { | |
3efd0893 | 545 | log_warnx("%s: received unexpected imsg fd to ldpe", __func__); |
8429abe0 RW |
546 | break; |
547 | } | |
548 | if ((fd = imsg.fd) == -1) { | |
3efd0893 | 549 | log_warnx("%s: expected to receive imsg fd to ldpe but didn't receive any", __func__); |
8429abe0 RW |
550 | break; |
551 | } | |
552 | ||
553 | if ((iev_ldpe = malloc(sizeof(struct imsgev))) == NULL) | |
554 | fatal(NULL); | |
555 | imsg_init(&iev_ldpe->ibuf, fd); | |
eac6e3f0 | 556 | iev_ldpe->handler_read = lde_dispatch_imsg; |
66e78ae6 QY |
557 | thread_add_read(master, iev_ldpe->handler_read, iev_ldpe, iev_ldpe->ibuf.fd, |
558 | &iev_ldpe->ev_read); | |
eac6e3f0 RW |
559 | iev_ldpe->handler_write = ldp_write_handler; |
560 | iev_ldpe->ev_write = NULL; | |
8429abe0 | 561 | break; |
274f5abf RW |
562 | case IMSG_INIT: |
563 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
564 | sizeof(struct ldpd_init)) | |
565 | fatalx("INIT imsg with wrong len"); | |
566 | ||
567 | memcpy(&init, imsg.data, sizeof(init)); | |
568 | lde_init(&init); | |
569 | break; | |
f9a4d683 KS |
570 | case IMSG_AGENTX_ENABLED: |
571 | ldp_agentx_enabled(); | |
572 | break; | |
8429abe0 RW |
573 | case IMSG_RECONF_CONF: |
574 | if ((nconf = malloc(sizeof(struct ldpd_conf))) == | |
575 | NULL) | |
576 | fatal(NULL); | |
577 | memcpy(nconf, imsg.data, sizeof(struct ldpd_conf)); | |
578 | ||
45926e58 RZ |
579 | RB_INIT(iface_head, &nconf->iface_tree); |
580 | RB_INIT(tnbr_head, &nconf->tnbr_tree); | |
581 | RB_INIT(nbrp_head, &nconf->nbrp_tree); | |
582 | RB_INIT(l2vpn_head, &nconf->l2vpn_tree); | |
8429abe0 RW |
583 | break; |
584 | case IMSG_RECONF_IFACE: | |
585 | if ((niface = malloc(sizeof(struct iface))) == NULL) | |
586 | fatal(NULL); | |
587 | memcpy(niface, imsg.data, sizeof(struct iface)); | |
588 | ||
7d3d7491 | 589 | RB_INSERT(iface_head, &nconf->iface_tree, niface); |
8429abe0 RW |
590 | break; |
591 | case IMSG_RECONF_TNBR: | |
592 | if ((ntnbr = malloc(sizeof(struct tnbr))) == NULL) | |
593 | fatal(NULL); | |
594 | memcpy(ntnbr, imsg.data, sizeof(struct tnbr)); | |
595 | ||
7989cdba | 596 | RB_INSERT(tnbr_head, &nconf->tnbr_tree, ntnbr); |
8429abe0 RW |
597 | break; |
598 | case IMSG_RECONF_NBRP: | |
599 | if ((nnbrp = malloc(sizeof(struct nbr_params))) == NULL) | |
600 | fatal(NULL); | |
601 | memcpy(nnbrp, imsg.data, sizeof(struct nbr_params)); | |
602 | ||
76c4abd1 | 603 | RB_INSERT(nbrp_head, &nconf->nbrp_tree, nnbrp); |
8429abe0 RW |
604 | break; |
605 | case IMSG_RECONF_L2VPN: | |
606 | if ((nl2vpn = malloc(sizeof(struct l2vpn))) == NULL) | |
607 | fatal(NULL); | |
608 | memcpy(nl2vpn, imsg.data, sizeof(struct l2vpn)); | |
609 | ||
45926e58 RZ |
610 | RB_INIT(l2vpn_if_head, &nl2vpn->if_tree); |
611 | RB_INIT(l2vpn_pw_head, &nl2vpn->pw_tree); | |
612 | RB_INIT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree); | |
8429abe0 | 613 | |
90d7e7bd | 614 | RB_INSERT(l2vpn_head, &nconf->l2vpn_tree, nl2vpn); |
8429abe0 RW |
615 | break; |
616 | case IMSG_RECONF_L2VPN_IF: | |
617 | if ((nlif = malloc(sizeof(struct l2vpn_if))) == NULL) | |
618 | fatal(NULL); | |
619 | memcpy(nlif, imsg.data, sizeof(struct l2vpn_if)); | |
620 | ||
029c1958 | 621 | RB_INSERT(l2vpn_if_head, &nl2vpn->if_tree, nlif); |
8429abe0 RW |
622 | break; |
623 | case IMSG_RECONF_L2VPN_PW: | |
624 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
625 | fatal(NULL); | |
626 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
627 | ||
20bacaeb | 628 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_tree, npw); |
8429abe0 | 629 | break; |
eac6e3f0 RW |
630 | case IMSG_RECONF_L2VPN_IPW: |
631 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
632 | fatal(NULL); | |
633 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
634 | ||
20bacaeb | 635 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree, npw); |
eac6e3f0 | 636 | break; |
8429abe0 RW |
637 | case IMSG_RECONF_END: |
638 | merge_config(ldeconf, nconf); | |
1d75a89d | 639 | ldp_clear_config(nconf); |
8429abe0 RW |
640 | nconf = NULL; |
641 | break; | |
eac6e3f0 RW |
642 | case IMSG_DEBUG_UPDATE: |
643 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
644 | sizeof(ldp_debug)) { | |
645 | log_warnx("%s: wrong imsg len", __func__); | |
646 | break; | |
647 | } | |
648 | memcpy(&ldp_debug, imsg.data, sizeof(ldp_debug)); | |
649 | break; | |
2d1aa1e8 | 650 | case IMSG_FILTER_UPDATE: |
651 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
652 | sizeof(struct ldp_access)) { | |
653 | log_warnx("%s: wrong imsg len", __func__); | |
654 | break; | |
655 | } | |
656 | laccess = imsg.data; | |
657 | lde_check_filter_af(AF_INET, &ldeconf->ipv4, | |
658 | laccess->name); | |
659 | lde_check_filter_af(AF_INET6, &ldeconf->ipv6, | |
660 | laccess->name); | |
661 | break; | |
077d336a RW |
662 | case IMSG_RLFA_REG: |
663 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
664 | sizeof(struct zapi_rlfa_request)) { | |
665 | log_warnx("%s: wrong imsg len", __func__); | |
666 | break; | |
667 | } | |
668 | rlfa_req = imsg.data; | |
669 | rnode = rlfa_node_find(&rlfa_req->destination, | |
670 | rlfa_req->pq_address); | |
671 | if (!rnode) | |
672 | rnode = rlfa_node_new(&rlfa_req->destination, | |
673 | rlfa_req->pq_address); | |
674 | rclient = rlfa_client_find(rnode, &rlfa_req->igp); | |
675 | if (rclient) | |
676 | /* RLFA already registered - do nothing */ | |
677 | break; | |
678 | rclient = rlfa_client_new(rnode, &rlfa_req->igp); | |
679 | lde_rlfa_check(rclient); | |
680 | break; | |
681 | case IMSG_RLFA_UNREG_ALL: | |
682 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
683 | sizeof(struct zapi_rlfa_igp)) { | |
684 | log_warnx("%s: wrong imsg len", __func__); | |
685 | break; | |
686 | } | |
687 | rlfa_igp = imsg.data; | |
688 | ||
689 | RB_FOREACH_SAFE (rnode, ldp_rlfa_node_head, | |
690 | &rlfa_node_tree, rntmp) { | |
691 | rclient = rlfa_client_find(rnode, rlfa_igp); | |
692 | if (!rclient) | |
693 | continue; | |
694 | ||
695 | rlfa_client_del(rclient); | |
696 | } | |
697 | break; | |
8429abe0 RW |
698 | default: |
699 | log_debug("%s: unexpected imsg %d", __func__, | |
700 | imsg.hdr.type); | |
701 | break; | |
702 | } | |
703 | imsg_free(&imsg); | |
704 | } | |
705 | if (!shut) | |
706 | imsg_event_add(iev); | |
707 | else { | |
eac6e3f0 | 708 | /* this pipe is dead, so remove the event handlers and exit */ |
50478845 MS |
709 | thread_cancel(&iev->ev_read); |
710 | thread_cancel(&iev->ev_write); | |
eac6e3f0 | 711 | lde_shutdown(); |
8429abe0 | 712 | } |
eac6e3f0 RW |
713 | |
714 | return (0); | |
8429abe0 RW |
715 | } |
716 | ||
45a8eba9 RW |
717 | int |
718 | lde_acl_check(char *acl_name, int af, union ldpd_addr *addr, uint8_t prefixlen) | |
719 | { | |
720 | return ldp_acl_request(iev_main_sync, acl_name, af, addr, prefixlen); | |
721 | } | |
722 | ||
aff1743c KS |
723 | static bool lde_fec_connected(const struct fec_node *fn) |
724 | { | |
725 | struct fec_nh *fnh; | |
726 | ||
727 | LIST_FOREACH(fnh, &fn->nexthops, entry) | |
728 | if (fnh->flags & F_FEC_NH_CONNECTED) | |
729 | return true; | |
730 | ||
731 | return false; | |
732 | } | |
733 | ||
734 | static bool lde_fec_outside_mpls_network(const struct fec_node *fn) | |
735 | { | |
736 | struct fec_nh *fnh; | |
737 | ||
738 | LIST_FOREACH(fnh, &fn->nexthops, entry) | |
739 | if (!(fnh->flags & F_FEC_NH_NO_LDP)) | |
740 | return false; | |
741 | ||
742 | return true; | |
743 | } | |
744 | ||
8429abe0 | 745 | uint32_t |
8cb1fc45 | 746 | lde_update_label(struct fec_node *fn) |
8429abe0 | 747 | { |
8429abe0 | 748 | |
45a8eba9 | 749 | /* should we allocate a label for this fec? */ |
8cb1fc45 | 750 | switch (fn->fec.type) { |
45a8eba9 | 751 | case FEC_TYPE_IPV4: |
12256b84 DA |
752 | if ((ldeconf->ipv4.flags & F_LDPD_AF_ALLOCHOSTONLY) |
753 | && fn->fec.u.ipv4.prefixlen != IPV4_MAX_BITLEN) | |
45a8eba9 RW |
754 | return (NO_LABEL); |
755 | if (lde_acl_check(ldeconf->ipv4.acl_label_allocate_for, | |
8cb1fc45 RW |
756 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, |
757 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
758 | return (NO_LABEL); |
759 | break; | |
760 | case FEC_TYPE_IPV6: | |
13ccce6e DA |
761 | if ((ldeconf->ipv6.flags & F_LDPD_AF_ALLOCHOSTONLY) |
762 | && fn->fec.u.ipv6.prefixlen != IPV6_MAX_BITLEN) | |
45a8eba9 RW |
763 | return (NO_LABEL); |
764 | if (lde_acl_check(ldeconf->ipv6.acl_label_allocate_for, | |
8cb1fc45 RW |
765 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, |
766 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
767 | return (NO_LABEL); |
768 | break; | |
769 | default: | |
45a8eba9 RW |
770 | break; |
771 | } | |
772 | ||
aff1743c KS |
773 | /* |
774 | * If connected interface act as egress for fec. | |
775 | * If LDP is not configured on an interface but there | |
776 | * are other NHs with interfaces configured with LDP | |
777 | * then don't act as an egress for the fec, otherwise | |
778 | * act as an egress for the fec | |
779 | */ | |
780 | if (lde_fec_connected(fn) || lde_fec_outside_mpls_network(fn)) { | |
45a8eba9 | 781 | /* choose implicit or explicit-null depending on configuration */ |
8cb1fc45 | 782 | switch (fn->fec.type) { |
45a8eba9 RW |
783 | case FEC_TYPE_IPV4: |
784 | if (!(ldeconf->ipv4.flags & F_LDPD_AF_EXPNULL)) | |
70e98a7f | 785 | return (MPLS_LABEL_IMPLICIT_NULL); |
45a8eba9 | 786 | if (lde_acl_check(ldeconf->ipv4.acl_label_expnull_for, |
8cb1fc45 RW |
787 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, |
788 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
70e98a7f DS |
789 | return (MPLS_LABEL_IMPLICIT_NULL); |
790 | return MPLS_LABEL_IPV4_EXPLICIT_NULL; | |
45a8eba9 RW |
791 | case FEC_TYPE_IPV6: |
792 | if (!(ldeconf->ipv6.flags & F_LDPD_AF_EXPNULL)) | |
70e98a7f | 793 | return (MPLS_LABEL_IMPLICIT_NULL); |
45a8eba9 | 794 | if (lde_acl_check(ldeconf->ipv6.acl_label_expnull_for, |
8cb1fc45 RW |
795 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, |
796 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
70e98a7f DS |
797 | return (MPLS_LABEL_IMPLICIT_NULL); |
798 | return MPLS_LABEL_IPV6_EXPLICIT_NULL; | |
45a8eba9 | 799 | default: |
45a8eba9 RW |
800 | break; |
801 | } | |
802 | } | |
803 | ||
8cb1fc45 RW |
804 | /* preserve current label if there's no need to update it */ |
805 | if (fn->local_label != NO_LABEL && | |
806 | fn->local_label > MPLS_LABEL_RESERVED_MAX) | |
807 | return (fn->local_label); | |
808 | ||
5afba51d | 809 | return (lde_get_next_label()); |
8429abe0 RW |
810 | } |
811 | ||
812 | void | |
813 | lde_send_change_klabel(struct fec_node *fn, struct fec_nh *fnh) | |
814 | { | |
87b5f1b7 RW |
815 | struct kroute kr; |
816 | struct zapi_pw zpw; | |
8429abe0 RW |
817 | struct l2vpn_pw *pw; |
818 | ||
aff1743c KS |
819 | /* |
820 | * Ordered Control: don't program label into HW until a | |
821 | * labelmap msg has been received from upstream router | |
822 | */ | |
823 | if (fnh->flags & F_FEC_NH_DEFER) | |
824 | return; | |
825 | ||
8429abe0 RW |
826 | switch (fn->fec.type) { |
827 | case FEC_TYPE_IPV4: | |
828 | memset(&kr, 0, sizeof(kr)); | |
829 | kr.af = AF_INET; | |
830 | kr.prefix.v4 = fn->fec.u.ipv4.prefix; | |
831 | kr.prefixlen = fn->fec.u.ipv4.prefixlen; | |
832 | kr.nexthop.v4 = fnh->nexthop.v4; | |
88d88a9c | 833 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
834 | kr.local_label = fn->local_label; |
835 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
836 | kr.route_type = fnh->route_type; |
837 | kr.route_instance = fnh->route_instance; | |
8429abe0 RW |
838 | lde_imsg_compose_parent(IMSG_KLABEL_CHANGE, 0, &kr, |
839 | sizeof(kr)); | |
8429abe0 RW |
840 | break; |
841 | case FEC_TYPE_IPV6: | |
842 | memset(&kr, 0, sizeof(kr)); | |
843 | kr.af = AF_INET6; | |
844 | kr.prefix.v6 = fn->fec.u.ipv6.prefix; | |
845 | kr.prefixlen = fn->fec.u.ipv6.prefixlen; | |
846 | kr.nexthop.v6 = fnh->nexthop.v6; | |
88d88a9c | 847 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
848 | kr.local_label = fn->local_label; |
849 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
850 | kr.route_type = fnh->route_type; |
851 | kr.route_instance = fnh->route_instance; | |
8429abe0 RW |
852 | |
853 | lde_imsg_compose_parent(IMSG_KLABEL_CHANGE, 0, &kr, | |
854 | sizeof(kr)); | |
8429abe0 RW |
855 | break; |
856 | case FEC_TYPE_PWID: | |
3c5b5220 RW |
857 | pw = (struct l2vpn_pw *) fn->data; |
858 | if (!pw || fn->local_label == NO_LABEL || | |
8429abe0 RW |
859 | fnh->remote_label == NO_LABEL) |
860 | return; | |
861 | ||
3c5b5220 | 862 | pw->enabled = true; |
87b5f1b7 RW |
863 | pw2zpw(pw, &zpw); |
864 | zpw.local_label = fn->local_label; | |
865 | zpw.remote_label = fnh->remote_label; | |
866 | lde_imsg_compose_parent(IMSG_KPW_SET, 0, &zpw, sizeof(zpw)); | |
8429abe0 RW |
867 | break; |
868 | } | |
869 | } | |
870 | ||
871 | void | |
872 | lde_send_delete_klabel(struct fec_node *fn, struct fec_nh *fnh) | |
873 | { | |
874 | struct kroute kr; | |
87b5f1b7 | 875 | struct zapi_pw zpw; |
8429abe0 RW |
876 | struct l2vpn_pw *pw; |
877 | ||
878 | switch (fn->fec.type) { | |
879 | case FEC_TYPE_IPV4: | |
880 | memset(&kr, 0, sizeof(kr)); | |
881 | kr.af = AF_INET; | |
882 | kr.prefix.v4 = fn->fec.u.ipv4.prefix; | |
883 | kr.prefixlen = fn->fec.u.ipv4.prefixlen; | |
884 | kr.nexthop.v4 = fnh->nexthop.v4; | |
88d88a9c | 885 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
886 | kr.local_label = fn->local_label; |
887 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
888 | kr.route_type = fnh->route_type; |
889 | kr.route_instance = fnh->route_instance; | |
8429abe0 RW |
890 | |
891 | lde_imsg_compose_parent(IMSG_KLABEL_DELETE, 0, &kr, | |
892 | sizeof(kr)); | |
8429abe0 RW |
893 | break; |
894 | case FEC_TYPE_IPV6: | |
895 | memset(&kr, 0, sizeof(kr)); | |
896 | kr.af = AF_INET6; | |
897 | kr.prefix.v6 = fn->fec.u.ipv6.prefix; | |
898 | kr.prefixlen = fn->fec.u.ipv6.prefixlen; | |
899 | kr.nexthop.v6 = fnh->nexthop.v6; | |
88d88a9c | 900 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
901 | kr.local_label = fn->local_label; |
902 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
903 | kr.route_type = fnh->route_type; |
904 | kr.route_instance = fnh->route_instance; | |
8429abe0 RW |
905 | |
906 | lde_imsg_compose_parent(IMSG_KLABEL_DELETE, 0, &kr, | |
907 | sizeof(kr)); | |
8429abe0 RW |
908 | break; |
909 | case FEC_TYPE_PWID: | |
910 | pw = (struct l2vpn_pw *) fn->data; | |
3c5b5220 RW |
911 | if (!pw) |
912 | return; | |
913 | ||
914 | pw->enabled = false; | |
87b5f1b7 RW |
915 | pw2zpw(pw, &zpw); |
916 | zpw.local_label = fn->local_label; | |
917 | zpw.remote_label = fnh->remote_label; | |
918 | lde_imsg_compose_parent(IMSG_KPW_UNSET, 0, &zpw, sizeof(zpw)); | |
8429abe0 RW |
919 | break; |
920 | } | |
921 | } | |
922 | ||
077d336a RW |
923 | void |
924 | lde_fec2prefix(const struct fec *fec, struct prefix *prefix) | |
925 | { | |
926 | memset(prefix, 0, sizeof(*prefix)); | |
927 | switch (fec->type) { | |
928 | case FEC_TYPE_IPV4: | |
929 | prefix->family = AF_INET; | |
930 | prefix->u.prefix4 = fec->u.ipv4.prefix; | |
931 | prefix->prefixlen = fec->u.ipv4.prefixlen; | |
932 | break; | |
933 | case FEC_TYPE_IPV6: | |
934 | prefix->family = AF_INET6; | |
935 | prefix->u.prefix6 = fec->u.ipv6.prefix; | |
936 | prefix->prefixlen = fec->u.ipv6.prefixlen; | |
937 | break; | |
938 | default: | |
939 | prefix->family = AF_UNSPEC; | |
940 | break; | |
941 | } | |
942 | } | |
943 | ||
944 | void | |
945 | lde_prefix2fec(const struct prefix *prefix, struct fec *fec) | |
946 | { | |
947 | memset(fec, 0, sizeof(*fec)); | |
948 | switch (prefix->family) { | |
949 | case AF_INET: | |
950 | fec->type = FEC_TYPE_IPV4; | |
951 | fec->u.ipv4.prefix = prefix->u.prefix4; | |
952 | fec->u.ipv4.prefixlen = prefix->prefixlen; | |
953 | break; | |
954 | case AF_INET6: | |
955 | fec->type = FEC_TYPE_IPV6; | |
956 | fec->u.ipv6.prefix = prefix->u.prefix6; | |
957 | fec->u.ipv6.prefixlen = prefix->prefixlen; | |
958 | break; | |
959 | default: | |
960 | fatalx("lde_prefix2fec: unknown af"); | |
961 | break; | |
962 | } | |
963 | } | |
964 | ||
8429abe0 RW |
965 | void |
966 | lde_fec2map(struct fec *fec, struct map *map) | |
967 | { | |
968 | memset(map, 0, sizeof(*map)); | |
969 | ||
970 | switch (fec->type) { | |
971 | case FEC_TYPE_IPV4: | |
972 | map->type = MAP_TYPE_PREFIX; | |
973 | map->fec.prefix.af = AF_INET; | |
974 | map->fec.prefix.prefix.v4 = fec->u.ipv4.prefix; | |
975 | map->fec.prefix.prefixlen = fec->u.ipv4.prefixlen; | |
976 | break; | |
977 | case FEC_TYPE_IPV6: | |
978 | map->type = MAP_TYPE_PREFIX; | |
979 | map->fec.prefix.af = AF_INET6; | |
980 | map->fec.prefix.prefix.v6 = fec->u.ipv6.prefix; | |
981 | map->fec.prefix.prefixlen = fec->u.ipv6.prefixlen; | |
982 | break; | |
983 | case FEC_TYPE_PWID: | |
984 | map->type = MAP_TYPE_PWID; | |
985 | map->fec.pwid.type = fec->u.pwid.type; | |
986 | map->fec.pwid.group_id = 0; | |
987 | map->flags |= F_MAP_PW_ID; | |
988 | map->fec.pwid.pwid = fec->u.pwid.pwid; | |
989 | break; | |
990 | } | |
991 | } | |
992 | ||
993 | void | |
994 | lde_map2fec(struct map *map, struct in_addr lsr_id, struct fec *fec) | |
995 | { | |
996 | memset(fec, 0, sizeof(*fec)); | |
997 | ||
998 | switch (map->type) { | |
999 | case MAP_TYPE_PREFIX: | |
1000 | switch (map->fec.prefix.af) { | |
1001 | case AF_INET: | |
1002 | fec->type = FEC_TYPE_IPV4; | |
1003 | fec->u.ipv4.prefix = map->fec.prefix.prefix.v4; | |
1004 | fec->u.ipv4.prefixlen = map->fec.prefix.prefixlen; | |
1005 | break; | |
1006 | case AF_INET6: | |
1007 | fec->type = FEC_TYPE_IPV6; | |
1008 | fec->u.ipv6.prefix = map->fec.prefix.prefix.v6; | |
1009 | fec->u.ipv6.prefixlen = map->fec.prefix.prefixlen; | |
1010 | break; | |
1011 | default: | |
1012 | fatalx("lde_map2fec: unknown af"); | |
1013 | break; | |
1014 | } | |
1015 | break; | |
1016 | case MAP_TYPE_PWID: | |
1017 | fec->type = FEC_TYPE_PWID; | |
1018 | fec->u.pwid.type = map->fec.pwid.type; | |
1019 | fec->u.pwid.pwid = map->fec.pwid.pwid; | |
1020 | fec->u.pwid.lsr_id = lsr_id; | |
1021 | break; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | void | |
1026 | lde_send_labelmapping(struct lde_nbr *ln, struct fec_node *fn, int single) | |
1027 | { | |
7c2abbd7 RW |
1028 | struct lde_wdraw *lw; |
1029 | struct lde_map *me; | |
1030 | struct lde_req *lre; | |
1031 | struct map map; | |
1032 | struct l2vpn_pw *pw; | |
aff1743c KS |
1033 | struct fec_nh *fnh; |
1034 | bool allow = false; | |
1035 | ||
1036 | /* | |
1037 | * Ordered Control: do not send a labelmap msg until | |
1038 | * a labelmap message is received from downstream router | |
1039 | * and don't send labelmap back to downstream router | |
1040 | */ | |
1041 | if (ldeconf->flags & F_LDPD_ORDERED_CONTROL) { | |
1042 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
1043 | if (fnh->flags & F_FEC_NH_DEFER) | |
1044 | continue; | |
1045 | ||
1046 | if (lde_address_find(ln, fnh->af, &fnh->nexthop)) | |
1047 | return; | |
1048 | allow = true; | |
1049 | break; | |
1050 | } | |
1051 | if (!allow) | |
1052 | return; | |
1053 | } | |
7c2abbd7 RW |
1054 | |
1055 | /* | |
1056 | * We shouldn't send a new label mapping if we have a pending | |
1057 | * label release to receive. In this case, schedule to send a | |
1058 | * label mapping as soon as a label release is received. | |
1059 | */ | |
1060 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, &fn->fec); | |
1061 | if (lw) { | |
b4fcca6b | 1062 | if (!fec_find(&ln->sent_map_pending, &fn->fec)) { |
3efd0893 | 1063 | debug_evt("%s: FEC %s: scheduling to send label mapping later (waiting for pending label release)", |
b4fcca6b | 1064 | __func__, log_fec(&fn->fec)); |
7c2abbd7 | 1065 | lde_map_pending_add(ln, fn); |
b4fcca6b | 1066 | } |
7c2abbd7 RW |
1067 | return; |
1068 | } | |
8429abe0 RW |
1069 | |
1070 | /* | |
1071 | * This function skips SL.1 - 3 and SL.9 - 14 because the label | |
1072 | * allocation is done way earlier (because of the merging nature of | |
1073 | * ldpd). | |
1074 | */ | |
1075 | ||
1076 | lde_fec2map(&fn->fec, &map); | |
1077 | switch (fn->fec.type) { | |
1078 | case FEC_TYPE_IPV4: | |
1079 | if (!ln->v4_enabled) | |
1080 | return; | |
45a8eba9 RW |
1081 | if (lde_acl_check(ldeconf->ipv4.acl_label_advertise_to, |
1082 | AF_INET, (union ldpd_addr *)&ln->id, 32) != FILTER_PERMIT) | |
1083 | return; | |
1084 | if (lde_acl_check(ldeconf->ipv4.acl_label_advertise_for, | |
1085 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, | |
1086 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
1087 | return; | |
8429abe0 RW |
1088 | break; |
1089 | case FEC_TYPE_IPV6: | |
1090 | if (!ln->v6_enabled) | |
1091 | return; | |
45a8eba9 RW |
1092 | if (lde_acl_check(ldeconf->ipv6.acl_label_advertise_to, |
1093 | AF_INET, (union ldpd_addr *)&ln->id, 32) != FILTER_PERMIT) | |
1094 | return; | |
1095 | if (lde_acl_check(ldeconf->ipv6.acl_label_advertise_for, | |
1096 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, | |
1097 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
1098 | return; | |
8429abe0 RW |
1099 | break; |
1100 | case FEC_TYPE_PWID: | |
1101 | pw = (struct l2vpn_pw *) fn->data; | |
1102 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1103 | /* not the remote end of the pseudowire */ | |
1104 | return; | |
1105 | ||
1106 | map.flags |= F_MAP_PW_IFMTU; | |
1107 | map.fec.pwid.ifmtu = pw->l2vpn->mtu; | |
1108 | if (pw->flags & F_PW_CWORD) | |
1109 | map.flags |= F_MAP_PW_CWORD; | |
1110 | if (pw->flags & F_PW_STATUSTLV) { | |
1111 | map.flags |= F_MAP_PW_STATUS; | |
87b5f1b7 | 1112 | map.pw_status = pw->local_status; |
8429abe0 RW |
1113 | } |
1114 | break; | |
1115 | } | |
1116 | map.label = fn->local_label; | |
1117 | ||
1118 | /* SL.6: is there a pending request for this mapping? */ | |
1119 | lre = (struct lde_req *)fec_find(&ln->recv_req, &fn->fec); | |
1120 | if (lre) { | |
1121 | /* set label request msg id in the mapping response. */ | |
1122 | map.requestid = lre->msg_id; | |
1123 | map.flags = F_MAP_REQ_ID; | |
1124 | ||
1125 | /* SL.7: delete record of pending request */ | |
1126 | lde_req_del(ln, lre, 0); | |
1127 | } | |
1128 | ||
1129 | /* SL.4: send label mapping */ | |
1130 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD, ln->peerid, 0, | |
1131 | &map, sizeof(map)); | |
1132 | if (single) | |
1133 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, | |
1134 | NULL, 0); | |
1135 | ||
1136 | /* SL.5: record sent label mapping */ | |
1137 | me = (struct lde_map *)fec_find(&ln->sent_map, &fn->fec); | |
1138 | if (me == NULL) | |
1139 | me = lde_map_add(ln, fn, 1); | |
1140 | me->map = map; | |
1141 | } | |
1142 | ||
1143 | void | |
0bcc2916 RW |
1144 | lde_send_labelwithdraw(struct lde_nbr *ln, struct fec_node *fn, |
1145 | struct map *wcard, struct status_tlv *st) | |
8429abe0 RW |
1146 | { |
1147 | struct lde_wdraw *lw; | |
1148 | struct map map; | |
1149 | struct fec *f; | |
1150 | struct l2vpn_pw *pw; | |
1151 | ||
1152 | if (fn) { | |
1153 | lde_fec2map(&fn->fec, &map); | |
1154 | switch (fn->fec.type) { | |
1155 | case FEC_TYPE_IPV4: | |
1156 | if (!ln->v4_enabled) | |
1157 | return; | |
1158 | break; | |
1159 | case FEC_TYPE_IPV6: | |
1160 | if (!ln->v6_enabled) | |
1161 | return; | |
1162 | break; | |
1163 | case FEC_TYPE_PWID: | |
1164 | pw = (struct l2vpn_pw *) fn->data; | |
1165 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1166 | /* not the remote end of the pseudowire */ | |
1167 | return; | |
1168 | ||
1169 | if (pw->flags & F_PW_CWORD) | |
1170 | map.flags |= F_MAP_PW_CWORD; | |
1171 | break; | |
1172 | } | |
1173 | map.label = fn->local_label; | |
0bcc2916 RW |
1174 | } else |
1175 | memcpy(&map, wcard, sizeof(map)); | |
8429abe0 RW |
1176 | |
1177 | if (st) { | |
1178 | map.st.status_code = st->status_code; | |
1179 | map.st.msg_id = st->msg_id; | |
1180 | map.st.msg_type = st->msg_type; | |
1181 | map.flags |= F_MAP_STATUS; | |
1182 | } | |
1183 | ||
1184 | /* SWd.1: send label withdraw. */ | |
1185 | lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD, ln->peerid, 0, | |
1186 | &map, sizeof(map)); | |
1187 | lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD_END, ln->peerid, 0, NULL, 0); | |
1188 | ||
1189 | /* SWd.2: record label withdraw. */ | |
1190 | if (fn) { | |
1191 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, &fn->fec); | |
1192 | if (lw == NULL) | |
1193 | lw = lde_wdraw_add(ln, fn); | |
1194 | lw->label = map.label; | |
1195 | } else { | |
0bcc2916 RW |
1196 | struct lde_map *me; |
1197 | ||
8429abe0 RW |
1198 | RB_FOREACH(f, fec_tree, &ft) { |
1199 | fn = (struct fec_node *)f; | |
0bcc2916 RW |
1200 | me = (struct lde_map *)fec_find(&ln->sent_map, &fn->fec); |
1201 | if (lde_wildcard_apply(wcard, &fn->fec, me) == 0) | |
1202 | continue; | |
8429abe0 RW |
1203 | |
1204 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, | |
1205 | &fn->fec); | |
1206 | if (lw == NULL) | |
1207 | lw = lde_wdraw_add(ln, fn); | |
1208 | lw->label = map.label; | |
1209 | } | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | void | |
0bcc2916 | 1214 | lde_send_labelwithdraw_wcard(struct lde_nbr *ln, uint32_t label) |
8429abe0 | 1215 | { |
0bcc2916 | 1216 | struct map wcard; |
8429abe0 | 1217 | |
0bcc2916 RW |
1218 | memset(&wcard, 0, sizeof(wcard)); |
1219 | wcard.type = MAP_TYPE_WILDCARD; | |
1220 | wcard.label = label; | |
1221 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
8429abe0 RW |
1222 | } |
1223 | ||
d4afb819 RW |
1224 | void |
1225 | lde_send_labelwithdraw_twcard_prefix(struct lde_nbr *ln, uint16_t af, | |
1226 | uint32_t label) | |
1227 | { | |
1228 | struct map wcard; | |
1229 | ||
1230 | memset(&wcard, 0, sizeof(wcard)); | |
1231 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1232 | wcard.fec.twcard.type = MAP_TYPE_PREFIX; | |
1233 | wcard.fec.twcard.u.prefix_af = af; | |
1234 | wcard.label = label; | |
1235 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1236 | } | |
1237 | ||
aba50a83 RW |
1238 | void |
1239 | lde_send_labelwithdraw_twcard_pwid(struct lde_nbr *ln, uint16_t pw_type, | |
1240 | uint32_t label) | |
1241 | { | |
1242 | struct map wcard; | |
1243 | ||
1244 | memset(&wcard, 0, sizeof(wcard)); | |
1245 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1246 | wcard.fec.twcard.type = MAP_TYPE_PWID; | |
1247 | wcard.fec.twcard.u.pw_type = pw_type; | |
1248 | wcard.label = label; | |
1249 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1250 | } | |
1251 | ||
8429abe0 | 1252 | void |
0bcc2916 RW |
1253 | lde_send_labelwithdraw_pwid_wcard(struct lde_nbr *ln, uint16_t pw_type, |
1254 | uint32_t group_id) | |
1255 | { | |
1256 | struct map wcard; | |
1257 | ||
1258 | memset(&wcard, 0, sizeof(wcard)); | |
1259 | wcard.type = MAP_TYPE_PWID; | |
1260 | wcard.fec.pwid.type = pw_type; | |
1261 | wcard.fec.pwid.group_id = group_id; | |
1262 | /* we can not append a Label TLV when using PWid group wildcards. */ | |
1263 | wcard.label = NO_LABEL; | |
1264 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1265 | } | |
1266 | ||
1267 | void | |
1268 | lde_send_labelrelease(struct lde_nbr *ln, struct fec_node *fn, | |
1269 | struct map *wcard, uint32_t label) | |
8429abe0 RW |
1270 | { |
1271 | struct map map; | |
1272 | struct l2vpn_pw *pw; | |
1273 | ||
1274 | if (fn) { | |
1275 | lde_fec2map(&fn->fec, &map); | |
1276 | switch (fn->fec.type) { | |
1277 | case FEC_TYPE_IPV4: | |
1278 | if (!ln->v4_enabled) | |
1279 | return; | |
1280 | break; | |
1281 | case FEC_TYPE_IPV6: | |
1282 | if (!ln->v6_enabled) | |
1283 | return; | |
1284 | break; | |
1285 | case FEC_TYPE_PWID: | |
1286 | pw = (struct l2vpn_pw *) fn->data; | |
1287 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1288 | /* not the remote end of the pseudowire */ | |
1289 | return; | |
1290 | ||
1291 | if (pw->flags & F_PW_CWORD) | |
1292 | map.flags |= F_MAP_PW_CWORD; | |
1293 | break; | |
1294 | } | |
0bcc2916 RW |
1295 | } else |
1296 | memcpy(&map, wcard, sizeof(map)); | |
8429abe0 RW |
1297 | map.label = label; |
1298 | ||
1299 | lde_imsg_compose_ldpe(IMSG_RELEASE_ADD, ln->peerid, 0, | |
1300 | &map, sizeof(map)); | |
1301 | lde_imsg_compose_ldpe(IMSG_RELEASE_ADD_END, ln->peerid, 0, NULL, 0); | |
1302 | } | |
1303 | ||
2d1aa1e8 | 1304 | void |
1305 | lde_send_labelrequest(struct lde_nbr *ln, struct fec_node *fn, | |
1306 | struct map *wcard, int single) | |
1307 | { | |
1308 | struct map map; | |
1309 | struct fec *f; | |
1310 | struct lde_req *lre; | |
1311 | ||
1312 | if (fn) { | |
1313 | lde_fec2map(&fn->fec, &map); | |
1314 | switch (fn->fec.type) { | |
1315 | case FEC_TYPE_IPV4: | |
1316 | if (!ln->v4_enabled) | |
1317 | return; | |
1318 | break; | |
1319 | case FEC_TYPE_IPV6: | |
1320 | if (!ln->v6_enabled) | |
1321 | return; | |
1322 | break; | |
1323 | default: | |
1324 | fatalx("lde_send_labelrequest: unknown af"); | |
1325 | } | |
1326 | } else | |
1327 | memcpy(&map, wcard, sizeof(map)); | |
1328 | ||
1329 | map.label = NO_LABEL; | |
1330 | ||
1331 | if (fn) { | |
1332 | /* SLR1.1: has label request for FEC been previously sent | |
1333 | * and still outstanding just return, | |
1334 | */ | |
1335 | lre = (struct lde_req *)fec_find(&ln->sent_req, &fn->fec); | |
1336 | if (lre == NULL) { | |
1337 | /* SLRq.3: send label request */ | |
1338 | lde_imsg_compose_ldpe(IMSG_REQUEST_ADD, ln->peerid, 0, | |
1339 | &map, sizeof(map)); | |
1340 | if (single) | |
1341 | lde_imsg_compose_ldpe(IMSG_REQUEST_ADD_END, | |
1342 | ln->peerid, 0, NULL, 0); | |
1343 | ||
1344 | /* SLRq.4: record sent request */ | |
1345 | lde_req_add(ln, &fn->fec, 1); | |
1346 | } | |
1347 | } else { | |
1348 | /* if Wilcard just send label request */ | |
1349 | /* SLRq.3: send label request */ | |
1350 | lde_imsg_compose_ldpe(IMSG_REQUEST_ADD, | |
1351 | ln->peerid, 0, &map, sizeof(map)); | |
1352 | if (single) | |
1353 | lde_imsg_compose_ldpe(IMSG_REQUEST_ADD_END, | |
1354 | ln->peerid, 0, NULL, 0); | |
1355 | ||
1356 | /* SLRq.4: record sent request */ | |
1357 | RB_FOREACH(f, fec_tree, &ft) { | |
1358 | fn = (struct fec_node *)f; | |
1359 | lre = (struct lde_req *)fec_find(&ln->sent_req, &fn->fec); | |
1360 | if (lde_wildcard_apply(wcard, &fn->fec, NULL) == 0) | |
1361 | continue; | |
1362 | if (lre == NULL) | |
1363 | lde_req_add(ln, f, 1); | |
1364 | } | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | void | |
1369 | lde_send_labelrequest_wcard(struct lde_nbr *ln, uint16_t af) | |
1370 | { | |
1371 | struct map wcard; | |
1372 | ||
1373 | memset(&wcard, 0, sizeof(wcard)); | |
1374 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1375 | wcard.fec.twcard.type = MAP_TYPE_PREFIX; | |
1376 | wcard.fec.twcard.u.prefix_af = af; | |
1377 | lde_send_labelrequest(ln, NULL, &wcard, 1); | |
1378 | } | |
1379 | ||
8429abe0 | 1380 | void |
05aac414 | 1381 | lde_send_notification(struct lde_nbr *ln, uint32_t status_code, uint32_t msg_id, |
8429abe0 RW |
1382 | uint16_t msg_type) |
1383 | { | |
1384 | struct notify_msg nm; | |
1385 | ||
1386 | memset(&nm, 0, sizeof(nm)); | |
1387 | nm.status_code = status_code; | |
1388 | /* 'msg_id' and 'msg_type' should be in network byte order */ | |
1389 | nm.msg_id = msg_id; | |
1390 | nm.msg_type = msg_type; | |
1391 | ||
05aac414 | 1392 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, |
8429abe0 RW |
1393 | &nm, sizeof(nm)); |
1394 | } | |
1395 | ||
257799cd RW |
1396 | void |
1397 | lde_send_notification_eol_prefix(struct lde_nbr *ln, int af) | |
1398 | { | |
1399 | struct notify_msg nm; | |
1400 | ||
1401 | memset(&nm, 0, sizeof(nm)); | |
1402 | nm.status_code = S_ENDOFLIB; | |
1403 | nm.fec.type = MAP_TYPE_TYPED_WCARD; | |
1404 | nm.fec.fec.twcard.type = MAP_TYPE_PREFIX; | |
1405 | nm.fec.fec.twcard.u.prefix_af = af; | |
1406 | nm.flags |= F_NOTIF_FEC; | |
1407 | ||
1408 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, | |
1409 | &nm, sizeof(nm)); | |
1410 | } | |
1411 | ||
1412 | void | |
1413 | lde_send_notification_eol_pwid(struct lde_nbr *ln, uint16_t pw_type) | |
1414 | { | |
1415 | struct notify_msg nm; | |
1416 | ||
1417 | memset(&nm, 0, sizeof(nm)); | |
1418 | nm.status_code = S_ENDOFLIB; | |
1419 | nm.fec.type = MAP_TYPE_TYPED_WCARD; | |
1420 | nm.fec.fec.twcard.type = MAP_TYPE_PWID; | |
1421 | nm.fec.fec.twcard.u.pw_type = pw_type; | |
1422 | nm.flags |= F_NOTIF_FEC; | |
1423 | ||
1424 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, | |
1425 | &nm, sizeof(nm)); | |
1426 | } | |
1427 | ||
8429abe0 | 1428 | static __inline int |
45926e58 | 1429 | lde_nbr_compare(const struct lde_nbr *a, const struct lde_nbr *b) |
8429abe0 RW |
1430 | { |
1431 | return (a->peerid - b->peerid); | |
1432 | } | |
1433 | ||
1434 | static struct lde_nbr * | |
1435 | lde_nbr_new(uint32_t peerid, struct lde_nbr *new) | |
1436 | { | |
1437 | struct lde_nbr *ln; | |
1438 | ||
1439 | if ((ln = calloc(1, sizeof(*ln))) == NULL) | |
1440 | fatal(__func__); | |
1441 | ||
1442 | ln->id = new->id; | |
1443 | ln->v4_enabled = new->v4_enabled; | |
1444 | ln->v6_enabled = new->v6_enabled; | |
257799cd | 1445 | ln->flags = new->flags; |
8429abe0 RW |
1446 | ln->peerid = peerid; |
1447 | fec_init(&ln->recv_map); | |
1448 | fec_init(&ln->sent_map); | |
7c2abbd7 | 1449 | fec_init(&ln->sent_map_pending); |
8429abe0 RW |
1450 | fec_init(&ln->recv_req); |
1451 | fec_init(&ln->sent_req); | |
1452 | fec_init(&ln->sent_wdraw); | |
1453 | ||
1454 | TAILQ_INIT(&ln->addr_list); | |
1455 | ||
1456 | if (RB_INSERT(nbr_tree, &lde_nbrs, ln) != NULL) | |
1457 | fatalx("lde_nbr_new: RB_INSERT failed"); | |
1458 | ||
1459 | return (ln); | |
1460 | } | |
1461 | ||
1462 | static void | |
1463 | lde_nbr_del(struct lde_nbr *ln) | |
1464 | { | |
1465 | struct fec *f; | |
1466 | struct fec_node *fn; | |
1467 | struct fec_nh *fnh; | |
1468 | struct l2vpn_pw *pw; | |
aff1743c | 1469 | struct lde_nbr *lnbr; |
8429abe0 RW |
1470 | |
1471 | if (ln == NULL) | |
1472 | return; | |
1473 | ||
1474 | /* uninstall received mappings */ | |
1475 | RB_FOREACH(f, fec_tree, &ft) { | |
1476 | fn = (struct fec_node *)f; | |
1477 | ||
077d336a RW |
1478 | /* Update RLFA clients. */ |
1479 | lde_rlfa_update_clients(f, ln, MPLS_INVALID_LABEL); | |
1480 | ||
8429abe0 RW |
1481 | LIST_FOREACH(fnh, &fn->nexthops, entry) { |
1482 | switch (f->type) { | |
1483 | case FEC_TYPE_IPV4: | |
1484 | case FEC_TYPE_IPV6: | |
1485 | if (!lde_address_find(ln, fnh->af, | |
1486 | &fnh->nexthop)) | |
1487 | continue; | |
aff1743c KS |
1488 | |
1489 | /* | |
1490 | * Ordered Control: must mark any non-connected | |
1491 | * NH to wait until we receive a labelmap msg | |
1492 | * before installing in kernel and sending to | |
1493 | * peer, must do this as NHs are not removed | |
1494 | * when lsps go down. Also send label withdraw | |
1495 | * to other neighbors for all fecs from neighbor | |
1496 | * going down | |
1497 | */ | |
1498 | if (ldeconf->flags & F_LDPD_ORDERED_CONTROL) { | |
1499 | fnh->flags |= F_FEC_NH_DEFER; | |
1500 | ||
1501 | RB_FOREACH(lnbr, nbr_tree, &lde_nbrs) { | |
1502 | if (ln->peerid == lnbr->peerid) | |
1503 | continue; | |
1504 | lde_send_labelwithdraw(lnbr, fn, NULL, NULL); | |
1505 | } | |
1506 | } | |
8429abe0 RW |
1507 | break; |
1508 | case FEC_TYPE_PWID: | |
1509 | if (f->u.pwid.lsr_id.s_addr != ln->id.s_addr) | |
1510 | continue; | |
1511 | pw = (struct l2vpn_pw *) fn->data; | |
6bbdd9e9 | 1512 | if (pw) { |
1513 | pw->reason = F_PW_NO_REMOTE_LABEL; | |
8429abe0 | 1514 | l2vpn_pw_reset(pw); |
6bbdd9e9 | 1515 | } |
8429abe0 RW |
1516 | break; |
1517 | default: | |
1518 | break; | |
1519 | } | |
1520 | ||
1521 | lde_send_delete_klabel(fn, fnh); | |
1522 | fnh->remote_label = NO_LABEL; | |
1523 | } | |
1524 | } | |
1525 | ||
1526 | lde_address_list_free(ln); | |
1527 | ||
1528 | fec_clear(&ln->recv_map, lde_map_free); | |
1529 | fec_clear(&ln->sent_map, lde_map_free); | |
7c2abbd7 | 1530 | fec_clear(&ln->sent_map_pending, free); |
8429abe0 RW |
1531 | fec_clear(&ln->recv_req, free); |
1532 | fec_clear(&ln->sent_req, free); | |
1533 | fec_clear(&ln->sent_wdraw, free); | |
1534 | ||
1535 | RB_REMOVE(nbr_tree, &lde_nbrs, ln); | |
1536 | ||
1537 | free(ln); | |
1538 | } | |
1539 | ||
1540 | static struct lde_nbr * | |
1541 | lde_nbr_find(uint32_t peerid) | |
1542 | { | |
1543 | struct lde_nbr ln; | |
1544 | ||
1545 | ln.peerid = peerid; | |
1546 | ||
1547 | return (RB_FIND(nbr_tree, &lde_nbrs, &ln)); | |
1548 | } | |
1549 | ||
1550 | struct lde_nbr * | |
1551 | lde_nbr_find_by_lsrid(struct in_addr addr) | |
1552 | { | |
1553 | struct lde_nbr *ln; | |
1554 | ||
1555 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1556 | if (ln->id.s_addr == addr.s_addr) | |
1557 | return (ln); | |
1558 | ||
1559 | return (NULL); | |
1560 | } | |
1561 | ||
1562 | struct lde_nbr * | |
1563 | lde_nbr_find_by_addr(int af, union ldpd_addr *addr) | |
1564 | { | |
1565 | struct lde_nbr *ln; | |
1566 | ||
1567 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1568 | if (lde_address_find(ln, af, addr) != NULL) | |
1569 | return (ln); | |
1570 | ||
1571 | return (NULL); | |
1572 | } | |
1573 | ||
1574 | static void | |
1575 | lde_nbr_clear(void) | |
1576 | { | |
1577 | struct lde_nbr *ln; | |
1578 | ||
55cd0f61 DS |
1579 | while (!RB_EMPTY(nbr_tree, &lde_nbrs)) { |
1580 | ln = RB_ROOT(nbr_tree, &lde_nbrs); | |
1581 | ||
8429abe0 | 1582 | lde_nbr_del(ln); |
55cd0f61 | 1583 | } |
8429abe0 RW |
1584 | } |
1585 | ||
1586 | static void | |
1587 | lde_nbr_addr_update(struct lde_nbr *ln, struct lde_addr *lde_addr, int removed) | |
1588 | { | |
1589 | struct fec *fec; | |
1590 | struct fec_node *fn; | |
1591 | struct fec_nh *fnh; | |
1592 | struct lde_map *me; | |
1593 | ||
1594 | RB_FOREACH(fec, fec_tree, &ln->recv_map) { | |
8429abe0 RW |
1595 | switch (fec->type) { |
1596 | case FEC_TYPE_IPV4: | |
1597 | if (lde_addr->af != AF_INET) | |
1598 | continue; | |
1599 | break; | |
1600 | case FEC_TYPE_IPV6: | |
1601 | if (lde_addr->af != AF_INET6) | |
1602 | continue; | |
1603 | break; | |
1604 | default: | |
1605 | continue; | |
1606 | } | |
1607 | ||
1e4c8673 RW |
1608 | fn = (struct fec_node *)fec_find(&ft, fec); |
1609 | if (fn == NULL) | |
1610 | /* shouldn't happen */ | |
1611 | continue; | |
1612 | ||
8429abe0 RW |
1613 | LIST_FOREACH(fnh, &fn->nexthops, entry) { |
1614 | if (ldp_addrcmp(fnh->af, &fnh->nexthop, | |
1615 | &lde_addr->addr)) | |
1616 | continue; | |
1617 | ||
1618 | if (removed) { | |
1619 | lde_send_delete_klabel(fn, fnh); | |
1620 | fnh->remote_label = NO_LABEL; | |
1621 | } else { | |
1622 | me = (struct lde_map *)fec; | |
1623 | fnh->remote_label = me->map.label; | |
1624 | lde_send_change_klabel(fn, fnh); | |
1625 | } | |
1626 | break; | |
1627 | } | |
1628 | } | |
1629 | } | |
1630 | ||
ff5279ba | 1631 | void |
1632 | lde_allow_broken_lsp_update(int new_config) | |
1633 | { | |
1634 | struct fec_node *fn; | |
1635 | struct fec_nh *fnh; | |
1636 | struct fec *f; | |
1637 | ||
1638 | RB_FOREACH(f, fec_tree, &ft) { | |
1639 | fn = (struct fec_node *)f; | |
1640 | ||
1641 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
1642 | /* allow-broken-lsp config is changing so | |
1643 | * we need to reprogram labeled routes to | |
1644 | * have proper top-level label | |
1645 | */ | |
1646 | if (!(new_config & F_LDPD_ALLOW_BROKEN_LSP)) | |
1647 | lde_send_delete_klabel(fn, fnh); | |
1648 | ||
1649 | if (fn->local_label != NO_LABEL) | |
1650 | lde_send_change_klabel(fn, fnh); | |
1651 | } | |
1652 | } | |
1653 | } | |
1654 | ||
d3e1887a | 1655 | static __inline int |
45926e58 | 1656 | lde_map_compare(const struct lde_map *a, const struct lde_map *b) |
d3e1887a RW |
1657 | { |
1658 | return (ldp_addrcmp(AF_INET, (union ldpd_addr *)&a->nexthop->id, | |
1659 | (union ldpd_addr *)&b->nexthop->id)); | |
1660 | } | |
1661 | ||
8429abe0 RW |
1662 | struct lde_map * |
1663 | lde_map_add(struct lde_nbr *ln, struct fec_node *fn, int sent) | |
1664 | { | |
1665 | struct lde_map *me; | |
1666 | ||
1667 | me = calloc(1, sizeof(*me)); | |
1668 | if (me == NULL) | |
1669 | fatal(__func__); | |
1670 | ||
1671 | me->fec = fn->fec; | |
1672 | me->nexthop = ln; | |
1673 | ||
1674 | if (sent) { | |
d3e1887a RW |
1675 | RB_INSERT(lde_map_head, &fn->upstream, me); |
1676 | me->head = &fn->upstream; | |
8429abe0 RW |
1677 | if (fec_insert(&ln->sent_map, &me->fec)) |
1678 | log_warnx("failed to add %s to sent map", | |
1679 | log_fec(&me->fec)); | |
1680 | /* XXX on failure more cleanup is needed */ | |
1681 | } else { | |
d3e1887a RW |
1682 | RB_INSERT(lde_map_head, &fn->downstream, me); |
1683 | me->head = &fn->downstream; | |
8429abe0 RW |
1684 | if (fec_insert(&ln->recv_map, &me->fec)) |
1685 | log_warnx("failed to add %s to recv map", | |
1686 | log_fec(&me->fec)); | |
1687 | } | |
1688 | ||
1689 | return (me); | |
1690 | } | |
1691 | ||
1692 | void | |
1693 | lde_map_del(struct lde_nbr *ln, struct lde_map *me, int sent) | |
1694 | { | |
1695 | if (sent) | |
1696 | fec_remove(&ln->sent_map, &me->fec); | |
1697 | else | |
1698 | fec_remove(&ln->recv_map, &me->fec); | |
1699 | ||
1700 | lde_map_free(me); | |
1701 | } | |
1702 | ||
1703 | static void | |
1704 | lde_map_free(void *ptr) | |
1705 | { | |
1706 | struct lde_map *map = ptr; | |
1707 | ||
d3e1887a | 1708 | RB_REMOVE(lde_map_head, map->head, map); |
8429abe0 RW |
1709 | free(map); |
1710 | } | |
1711 | ||
7c2abbd7 RW |
1712 | struct fec * |
1713 | lde_map_pending_add(struct lde_nbr *ln, struct fec_node *fn) | |
1714 | { | |
1715 | struct fec *map; | |
1716 | ||
1717 | map = calloc(1, sizeof(*map)); | |
1718 | if (map == NULL) | |
1719 | fatal(__func__); | |
1720 | ||
1721 | *map = fn->fec; | |
1722 | if (fec_insert(&ln->sent_map_pending, map)) | |
1723 | log_warnx("failed to add %s to sent map (pending)", | |
1724 | log_fec(map)); | |
1725 | ||
1726 | return (map); | |
1727 | } | |
1728 | ||
1729 | void | |
1730 | lde_map_pending_del(struct lde_nbr *ln, struct fec *map) | |
1731 | { | |
1732 | fec_remove(&ln->sent_map_pending, map); | |
1733 | free(map); | |
1734 | } | |
1735 | ||
8429abe0 RW |
1736 | struct lde_req * |
1737 | lde_req_add(struct lde_nbr *ln, struct fec *fec, int sent) | |
1738 | { | |
1739 | struct fec_tree *t; | |
1740 | struct lde_req *lre; | |
1741 | ||
1742 | t = sent ? &ln->sent_req : &ln->recv_req; | |
1743 | ||
1744 | lre = calloc(1, sizeof(*lre)); | |
1745 | if (lre != NULL) { | |
1746 | lre->fec = *fec; | |
1747 | ||
1748 | if (fec_insert(t, &lre->fec)) { | |
1749 | log_warnx("failed to add %s to %s req", | |
1750 | log_fec(&lre->fec), sent ? "sent" : "recv"); | |
1751 | free(lre); | |
1752 | return (NULL); | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | return (lre); | |
1757 | } | |
1758 | ||
1759 | void | |
1760 | lde_req_del(struct lde_nbr *ln, struct lde_req *lre, int sent) | |
1761 | { | |
1762 | if (sent) | |
1763 | fec_remove(&ln->sent_req, &lre->fec); | |
1764 | else | |
1765 | fec_remove(&ln->recv_req, &lre->fec); | |
1766 | ||
1767 | free(lre); | |
1768 | } | |
1769 | ||
1770 | struct lde_wdraw * | |
1771 | lde_wdraw_add(struct lde_nbr *ln, struct fec_node *fn) | |
1772 | { | |
1773 | struct lde_wdraw *lw; | |
1774 | ||
1775 | lw = calloc(1, sizeof(*lw)); | |
1776 | if (lw == NULL) | |
1777 | fatal(__func__); | |
1778 | ||
1779 | lw->fec = fn->fec; | |
1780 | ||
1781 | if (fec_insert(&ln->sent_wdraw, &lw->fec)) | |
1782 | log_warnx("failed to add %s to sent wdraw", | |
1783 | log_fec(&lw->fec)); | |
1784 | ||
1785 | return (lw); | |
1786 | } | |
1787 | ||
1788 | void | |
1789 | lde_wdraw_del(struct lde_nbr *ln, struct lde_wdraw *lw) | |
1790 | { | |
1791 | fec_remove(&ln->sent_wdraw, &lw->fec); | |
1792 | free(lw); | |
1793 | } | |
1794 | ||
1795 | void | |
45a8eba9 | 1796 | lde_change_egress_label(int af) |
8429abe0 RW |
1797 | { |
1798 | struct lde_nbr *ln; | |
1799 | struct fec *f; | |
1800 | struct fec_node *fn; | |
1801 | ||
be54d744 | 1802 | /* explicitly withdraw all null labels */ |
8429abe0 | 1803 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) { |
70e98a7f | 1804 | lde_send_labelwithdraw_wcard(ln, MPLS_LABEL_IMPLICIT_NULL); |
45a8eba9 | 1805 | if (ln->v4_enabled) |
70e98a7f DS |
1806 | lde_send_labelwithdraw_wcard( |
1807 | ln, | |
1808 | MPLS_LABEL_IPV4_EXPLICIT_NULL); | |
45a8eba9 | 1809 | if (ln->v6_enabled) |
70e98a7f DS |
1810 | lde_send_labelwithdraw_wcard( |
1811 | ln, | |
1812 | MPLS_LABEL_IPV6_EXPLICIT_NULL); | |
be54d744 | 1813 | } |
8429abe0 | 1814 | |
be54d744 RW |
1815 | /* update label of connected routes */ |
1816 | RB_FOREACH(f, fec_tree, &ft) { | |
1817 | fn = (struct fec_node *)f; | |
1818 | if (fn->local_label > MPLS_LABEL_RESERVED_MAX) | |
1819 | continue; | |
8429abe0 | 1820 | |
be54d744 RW |
1821 | switch (af) { |
1822 | case AF_INET: | |
1823 | if (fn->fec.type != FEC_TYPE_IPV4) | |
1824 | continue; | |
1825 | break; | |
1826 | case AF_INET6: | |
1827 | if (fn->fec.type != FEC_TYPE_IPV6) | |
1828 | continue; | |
1829 | break; | |
1830 | default: | |
1831 | fatalx("lde_change_egress_label: unknown af"); | |
8429abe0 RW |
1832 | } |
1833 | ||
8cb1fc45 | 1834 | fn->local_label = lde_update_label(fn); |
45a8eba9 RW |
1835 | if (fn->local_label != NO_LABEL) |
1836 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1837 | lde_send_labelmapping(ln, fn, 0); | |
be54d744 RW |
1838 | } |
1839 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
8429abe0 RW |
1840 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, |
1841 | NULL, 0); | |
8429abe0 RW |
1842 | } |
1843 | ||
86753560 | 1844 | void |
2d1aa1e8 | 1845 | lde_change_allocate_filter(int af) |
86753560 | 1846 | { |
1847 | struct lde_nbr *ln; | |
1848 | struct fec *f; | |
1849 | struct fec_node *fn; | |
1850 | uint32_t new_label; | |
1851 | ||
2d1aa1e8 | 1852 | /* reallocate labels for fecs that match this filter */ |
86753560 | 1853 | RB_FOREACH(f, fec_tree, &ft) { |
1854 | fn = (struct fec_node *)f; | |
1855 | ||
1856 | switch (af) { | |
1857 | case AF_INET: | |
1858 | if (fn->fec.type != FEC_TYPE_IPV4) | |
1859 | continue; | |
1860 | break; | |
1861 | case AF_INET6: | |
1862 | if (fn->fec.type != FEC_TYPE_IPV6) | |
1863 | continue; | |
1864 | break; | |
1865 | default: | |
2d1aa1e8 | 1866 | fatalx("lde_change_allocate_filter: unknown af"); |
86753560 | 1867 | } |
1868 | ||
1869 | /* | |
1870 | * If the local label has changed to NO_LABEL, send a label | |
1871 | * withdraw to all peers. | |
1872 | * If the local label has changed and it's different from | |
1873 | * NO_LABEL, send a label mapping to all peers advertising | |
1874 | * the new label. | |
1875 | * If the local label hasn't changed, do nothing | |
1876 | */ | |
1877 | new_label = lde_update_label(fn); | |
1878 | if (fn->local_label != new_label) { | |
1879 | if (new_label == NO_LABEL) | |
1880 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1881 | lde_send_labelwithdraw(ln, fn, | |
1882 | NULL, NULL); | |
1883 | ||
1884 | fn->local_label = new_label; | |
1885 | if (fn->local_label != NO_LABEL) | |
1886 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1887 | lde_send_labelmapping(ln, fn, 0); | |
1888 | } | |
1889 | } | |
1890 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1891 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, | |
1892 | NULL, 0); | |
1893 | } | |
1894 | ||
2d1aa1e8 | 1895 | void |
1896 | lde_change_advertise_filter(int af) | |
1897 | { | |
1898 | struct lde_nbr *ln; | |
1899 | struct fec *f; | |
1900 | struct fec_node *fn; | |
1901 | char *acl_to_filter; | |
1902 | char *acl_for_filter; | |
1903 | union ldpd_addr *prefix; | |
1904 | uint8_t plen; | |
1905 | struct lde_map *me; | |
1906 | ||
1907 | /* advertise label for fecs to neighbors if matches advertise filters */ | |
1908 | switch (af) { | |
1909 | case AF_INET: | |
1910 | acl_to_filter = ldeconf->ipv4.acl_label_advertise_to; | |
1911 | acl_for_filter = ldeconf->ipv4.acl_label_advertise_for; | |
1912 | break; | |
1913 | case AF_INET6: | |
1914 | acl_to_filter = ldeconf->ipv6.acl_label_advertise_to; | |
1915 | acl_for_filter = ldeconf->ipv6.acl_label_advertise_for; | |
1916 | break; | |
1917 | default: | |
1918 | fatalx("lde_change_advertise_filter: unknown af"); | |
1919 | } | |
1920 | ||
1921 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) { | |
1922 | if (lde_acl_check(acl_to_filter, af, (union ldpd_addr *)&ln->id, | |
1923 | IPV4_MAX_BITLEN) != FILTER_PERMIT) | |
1924 | lde_send_labelwithdraw_wcard(ln, NO_LABEL); | |
1925 | else { | |
1926 | /* This neighbor is allowed in to_filter, so | |
1927 | * send labels if fec also matches for_filter | |
1928 | */ | |
1929 | RB_FOREACH(f, fec_tree, &ft) { | |
1930 | fn = (struct fec_node *)f; | |
1931 | switch (af) { | |
1932 | case AF_INET: | |
1933 | if (fn->fec.type != FEC_TYPE_IPV4) | |
1934 | continue; | |
1935 | prefix = (union ldpd_addr *) | |
1936 | &fn->fec.u.ipv4.prefix; | |
1937 | plen = fn->fec.u.ipv4.prefixlen; | |
1938 | break; | |
1939 | case FEC_TYPE_IPV6: | |
1940 | if (fn->fec.type != FEC_TYPE_IPV6) | |
1941 | continue; | |
1942 | prefix = (union ldpd_addr *) | |
1943 | &fn->fec.u.ipv6.prefix; | |
1944 | plen = fn->fec.u.ipv6.prefixlen; | |
1945 | break; | |
1946 | default: | |
1947 | continue; | |
1948 | } | |
1949 | if (lde_acl_check(acl_for_filter, af, | |
1950 | prefix, plen) != FILTER_PERMIT) { | |
1951 | me = (struct lde_map *)fec_find( | |
1952 | &ln->sent_map, &fn->fec); | |
1953 | if (me) | |
1954 | /* fec filtered withdraw */ | |
1955 | lde_send_labelwithdraw(ln, fn, | |
1956 | NULL, NULL); | |
1957 | } else | |
1958 | /* fec allowed send map */ | |
1959 | lde_send_labelmapping(ln, fn, 0); | |
1960 | } | |
1961 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, | |
1962 | ln->peerid, 0, NULL, 0); | |
1963 | } | |
1964 | } | |
1965 | } | |
1966 | ||
1967 | ||
1968 | void | |
1969 | lde_change_accept_filter(int af) | |
1970 | { | |
1971 | struct lde_nbr *ln; | |
1972 | struct fec *f; | |
1973 | struct fec_node *fn; | |
1974 | char *acl_for_filter; | |
1975 | char *acl_from_filter; | |
1976 | union ldpd_addr *prefix; | |
1977 | uint8_t plen; | |
1978 | struct lde_map *me; | |
1979 | enum fec_type type; | |
1980 | ||
1981 | /* accept labels from neighbors specified in the from_filter and for | |
1982 | * fecs defined in the for_filter | |
1983 | */ | |
1984 | switch (af) { | |
1985 | case AF_INET: | |
1986 | acl_for_filter = ldeconf->ipv4.acl_label_accept_for; | |
1987 | acl_from_filter = ldeconf->ipv4.acl_label_accept_from; | |
1988 | type = FEC_TYPE_IPV4; | |
1989 | break; | |
1990 | case AF_INET6: | |
1991 | acl_for_filter = ldeconf->ipv6.acl_label_accept_for; | |
1992 | acl_from_filter = ldeconf->ipv6.acl_label_accept_from; | |
1993 | type = FEC_TYPE_IPV6; | |
1994 | break; | |
1995 | default: | |
1996 | fatalx("lde_change_accept_filter: unknown af"); | |
1997 | } | |
1998 | ||
1999 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) { | |
2000 | if (lde_acl_check(acl_from_filter, AF_INET, (union ldpd_addr *) | |
2001 | &ln->id, IPV4_MAX_BITLEN) != FILTER_PERMIT) { | |
2002 | /* This neighbor is now filtered so remove fecs from | |
2003 | * recv list | |
2004 | */ | |
2005 | RB_FOREACH(f, fec_tree, &ft) { | |
2006 | fn = (struct fec_node *)f; | |
2007 | if (fn->fec.type == type) { | |
2008 | me = (struct lde_map *)fec_find( | |
2009 | &ln->recv_map, &fn->fec); | |
2010 | if (me) | |
2011 | lde_map_del(ln, me, 0); | |
2012 | } | |
2013 | } | |
2014 | } else if (ln->flags & F_NBR_CAP_TWCARD) { | |
2015 | /* This neighbor is allowed and supports type | |
2016 | * wildcard so send a labelrequest | |
2017 | * to get any new labels from neighbor | |
2018 | * and make sure any fecs we currently have | |
2019 | * match for_filter. | |
2020 | */ | |
2021 | RB_FOREACH(f, fec_tree, &ft) { | |
2022 | fn = (struct fec_node *)f; | |
2023 | switch (af) { | |
2024 | case AF_INET: | |
2025 | if (fn->fec.type != FEC_TYPE_IPV4) | |
2026 | continue; | |
2027 | prefix = (union ldpd_addr *) | |
2028 | &fn->fec.u.ipv4.prefix; | |
2029 | plen = fn->fec.u.ipv4.prefixlen; | |
2030 | break; | |
2031 | case AF_INET6: | |
2032 | if (fn->fec.type != FEC_TYPE_IPV6) | |
2033 | continue; | |
2034 | prefix = (union ldpd_addr *) | |
2035 | &fn->fec.u.ipv6.prefix; | |
2036 | plen = fn->fec.u.ipv6.prefixlen; | |
2037 | break; | |
2038 | default: | |
2039 | continue; | |
2040 | } | |
2041 | if (lde_acl_check(acl_for_filter, af, | |
2042 | prefix, plen) != FILTER_PERMIT) { | |
2043 | me = (struct lde_map *)fec_find( | |
2044 | &ln->recv_map, &fn->fec); | |
2045 | if (me) | |
2046 | lde_map_del(ln, me, 0); | |
2047 | } | |
2048 | } | |
2049 | lde_send_labelrequest_wcard(ln, af); | |
2050 | } else | |
2051 | /* Type Wildcard is not supported so restart session */ | |
2052 | lde_imsg_compose_ldpe(IMSG_NBR_SHUTDOWN, ln->peerid, 0, | |
2053 | NULL, 0); | |
2054 | } | |
2055 | } | |
2056 | ||
2057 | void | |
2058 | lde_change_expnull_for_filter(int af) | |
2059 | { | |
2060 | struct lde_nbr *ln; | |
2061 | struct fec *f; | |
2062 | struct fec_node *fn; | |
2063 | char *acl_name; | |
2064 | uint32_t exp_label; | |
2065 | union ldpd_addr *prefix; | |
2066 | uint8_t plen; | |
2067 | ||
2068 | /* Configure explicit-null advertisement for all fecs in this filter */ | |
2069 | RB_FOREACH(f, fec_tree, &ft) { | |
2070 | fn = (struct fec_node *)f; | |
2071 | ||
2072 | switch (af) { | |
2073 | case AF_INET: | |
2074 | if (fn->fec.type != FEC_TYPE_IPV4) | |
2075 | continue; | |
2076 | acl_name = ldeconf->ipv4.acl_label_expnull_for; | |
2077 | prefix = (union ldpd_addr *)&fn->fec.u.ipv4.prefix; | |
2078 | plen = fn->fec.u.ipv4.prefixlen; | |
2079 | exp_label = MPLS_LABEL_IPV4_EXPLICIT_NULL; | |
2080 | break; | |
2081 | case AF_INET6: | |
2082 | if (fn->fec.type != FEC_TYPE_IPV6) | |
2083 | continue; | |
2084 | acl_name = ldeconf->ipv6.acl_label_expnull_for; | |
2085 | prefix = (union ldpd_addr *)&fn->fec.u.ipv6.prefix; | |
2086 | plen = fn->fec.u.ipv6.prefixlen; | |
2087 | exp_label = MPLS_LABEL_IPV6_EXPLICIT_NULL; | |
2088 | break; | |
2089 | default: | |
2090 | fatalx("lde_change_expnull_for_filter: unknown af"); | |
2091 | } | |
2092 | ||
2093 | if (lde_acl_check(acl_name, af, prefix, plen) == FILTER_PERMIT) { | |
2094 | /* for this fec change any imp-null to exp-null */ | |
2095 | if (fn->local_label == MPLS_LABEL_IMPLICIT_NULL) { | |
2096 | fn->local_label= lde_update_label(fn); | |
2097 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2098 | lde_send_labelmapping(ln, fn, 0); | |
2099 | } | |
2100 | } else { | |
2101 | /* for this fec change any exp-null back to imp-null */ | |
2102 | if (fn->local_label == exp_label) { | |
2103 | fn->local_label = lde_update_label(fn); | |
2104 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2105 | lde_send_labelmapping(ln, fn, 0); | |
2106 | } | |
2107 | } | |
2108 | } | |
2109 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2110 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, | |
2111 | NULL, 0); | |
2112 | } | |
2113 | ||
8429abe0 RW |
2114 | static int |
2115 | lde_address_add(struct lde_nbr *ln, struct lde_addr *lde_addr) | |
2116 | { | |
2117 | struct lde_addr *new; | |
2118 | ||
2119 | if (lde_address_find(ln, lde_addr->af, &lde_addr->addr) != NULL) | |
2120 | return (-1); | |
2121 | ||
2122 | if ((new = calloc(1, sizeof(*new))) == NULL) | |
2123 | fatal(__func__); | |
2124 | ||
2125 | new->af = lde_addr->af; | |
2126 | new->addr = lde_addr->addr; | |
2127 | TAILQ_INSERT_TAIL(&ln->addr_list, new, entry); | |
2128 | ||
2129 | /* reevaluate the previously received mappings from this neighbor */ | |
2130 | lde_nbr_addr_update(ln, lde_addr, 0); | |
2131 | ||
2132 | return (0); | |
2133 | } | |
2134 | ||
2135 | static int | |
2136 | lde_address_del(struct lde_nbr *ln, struct lde_addr *lde_addr) | |
2137 | { | |
2138 | lde_addr = lde_address_find(ln, lde_addr->af, &lde_addr->addr); | |
2139 | if (lde_addr == NULL) | |
2140 | return (-1); | |
2141 | ||
2142 | /* reevaluate the previously received mappings from this neighbor */ | |
2143 | lde_nbr_addr_update(ln, lde_addr, 1); | |
2144 | ||
2145 | TAILQ_REMOVE(&ln->addr_list, lde_addr, entry); | |
2146 | free(lde_addr); | |
2147 | ||
2148 | return (0); | |
2149 | } | |
2150 | ||
2151 | struct lde_addr * | |
2152 | lde_address_find(struct lde_nbr *ln, int af, union ldpd_addr *addr) | |
2153 | { | |
2154 | struct lde_addr *lde_addr; | |
2155 | ||
2156 | TAILQ_FOREACH(lde_addr, &ln->addr_list, entry) | |
2157 | if (lde_addr->af == af && | |
2158 | ldp_addrcmp(af, &lde_addr->addr, addr) == 0) | |
2159 | return (lde_addr); | |
2160 | ||
2161 | return (NULL); | |
2162 | } | |
2163 | ||
2164 | static void | |
2165 | lde_address_list_free(struct lde_nbr *ln) | |
2166 | { | |
2167 | struct lde_addr *lde_addr; | |
2168 | ||
a43ad4fe | 2169 | while ((lde_addr = TAILQ_POP_FIRST(&ln->addr_list, entry)) != NULL) |
8429abe0 | 2170 | free(lde_addr); |
8429abe0 | 2171 | } |
fea12efb | 2172 | |
9d694b0b MS |
2173 | /* |
2174 | * Event callback used to retry the label-manager sync zapi session. | |
2175 | */ | |
2176 | static int zclient_sync_retry(struct thread *thread) | |
2177 | { | |
2178 | zclient_sync_init(); | |
2179 | ||
2180 | return 0; | |
2181 | } | |
2182 | ||
2183 | /* | |
2184 | * Initialize and open a synchronous zapi session. This is used by label chunk | |
2185 | * management code, which acquires and releases blocks of labels from the | |
2186 | * zebra label-manager module. | |
2187 | */ | |
2188 | static void zclient_sync_init(void) | |
5afba51d | 2189 | { |
17da84a4 | 2190 | struct zclient_options options = zclient_options_default; |
9d694b0b | 2191 | |
17da84a4 KS |
2192 | options.synchronous = true; |
2193 | ||
5afba51d | 2194 | /* Initialize special zclient for synchronous message exchanges. */ |
a243d1db | 2195 | zclient_sync = zclient_new(master, &options, NULL, 0); |
5afba51d RW |
2196 | zclient_sync->sock = -1; |
2197 | zclient_sync->redist_default = ZEBRA_ROUTE_LDP; | |
4cebdb9b | 2198 | zclient_sync->session_id = 1; /* Distinguish from main session */ |
342213ea DS |
2199 | zclient_sync->privs = &lde_privs; |
2200 | ||
9d694b0b | 2201 | if (zclient_socket_connect(zclient_sync) < 0) { |
5afba51d | 2202 | log_warnx("Error connecting synchronous zclient!"); |
9d694b0b | 2203 | goto retry; |
5afba51d | 2204 | } |
fa84d193 DL |
2205 | /* make socket non-blocking */ |
2206 | sock_set_nonblock(zclient_sync->sock); | |
5afba51d | 2207 | |
17da84a4 | 2208 | /* Send hello to notify zebra this is a synchronous client */ |
7cfdb485 | 2209 | if (zclient_send_hello(zclient_sync) == ZCLIENT_SEND_FAILURE) { |
17da84a4 | 2210 | log_warnx("Error sending hello for synchronous zclient!"); |
9d694b0b | 2211 | goto retry; |
17da84a4 KS |
2212 | } |
2213 | ||
5afba51d | 2214 | /* Connect to label manager */ |
9d694b0b | 2215 | if (lm_label_manager_connect(zclient_sync, 0) != 0) { |
5afba51d | 2216 | log_warnx("Error connecting to label manager!"); |
9d694b0b | 2217 | goto retry; |
5afba51d | 2218 | } |
9d694b0b MS |
2219 | |
2220 | /* Finish label-manager init once the LM session is running */ | |
2221 | lde_label_list_init(); | |
2222 | ||
2223 | return; | |
2224 | ||
2225 | retry: | |
2226 | ||
2227 | /* Discard failed zclient object */ | |
2228 | zclient_stop(zclient_sync); | |
2229 | zclient_free(zclient_sync); | |
2230 | zclient_sync = NULL; | |
2231 | ||
2232 | /* Retry using a timer */ | |
2233 | thread_add_timer(master, zclient_sync_retry, NULL, 1, NULL); | |
5afba51d RW |
2234 | } |
2235 | ||
fea12efb | 2236 | static void |
2237 | lde_del_label_chunk(void *val) | |
2238 | { | |
2239 | free(val); | |
2240 | } | |
5afba51d | 2241 | |
f4ec681c BA |
2242 | static int |
2243 | lde_release_label_chunk(uint32_t start, uint32_t end) | |
2244 | { | |
2245 | int ret; | |
2246 | ||
2247 | ret = lm_release_label_chunk(zclient_sync, start, end); | |
2248 | if (ret < 0) { | |
2249 | log_warnx("Error releasing label chunk!"); | |
2250 | return (-1); | |
2251 | } | |
2252 | return (0); | |
2253 | } | |
2254 | ||
fea12efb | 2255 | static int |
2256 | lde_get_label_chunk(void) | |
2257 | { | |
5afba51d RW |
2258 | int ret; |
2259 | uint32_t start, end; | |
fea12efb | 2260 | |
08e4b244 | 2261 | debug_labels("getting label chunk (size %u)", CHUNK_SIZE); |
0e3b6a92 EDP |
2262 | ret = lm_get_label_chunk(zclient_sync, 0, MPLS_LABEL_BASE_ANY, |
2263 | CHUNK_SIZE, &start, &end); | |
5afba51d | 2264 | if (ret < 0) { |
fea12efb | 2265 | log_warnx("Error getting label chunk!"); |
fea12efb | 2266 | return -1; |
2267 | } | |
2268 | ||
2269 | on_get_label_chunk_response(start, end); | |
2270 | ||
5afba51d | 2271 | return (0); |
fea12efb | 2272 | } |
5afba51d | 2273 | |
fea12efb | 2274 | static void |
2275 | lde_label_list_init(void) | |
2276 | { | |
2277 | label_chunk_list = list_new(); | |
2278 | label_chunk_list->del = lde_del_label_chunk; | |
2279 | ||
2280 | /* get first chunk */ | |
73be9aeb | 2281 | while (lde_get_label_chunk () != 0) { |
f2232fdf | 2282 | log_warnx("Error getting first label chunk!"); |
d1fcf957 | 2283 | sleep(1); |
fea12efb | 2284 | } |
2285 | } | |
2286 | ||
2287 | static void | |
2288 | on_get_label_chunk_response(uint32_t start, uint32_t end) | |
2289 | { | |
2290 | struct label_chunk *new_label_chunk; | |
2291 | ||
08e4b244 | 2292 | debug_labels("label chunk assign: %u - %u", start, end); |
fea12efb | 2293 | |
2294 | new_label_chunk = calloc(1, sizeof(struct label_chunk)); | |
66749b59 | 2295 | if (!new_label_chunk) { |
2296 | log_warn("Error trying to allocate label chunk %u - %u", start, end); | |
2297 | return; | |
2298 | } | |
fea12efb | 2299 | |
2300 | new_label_chunk->start = start; | |
2301 | new_label_chunk->end = end; | |
2302 | new_label_chunk->used_mask = 0; | |
2303 | ||
2304 | listnode_add(label_chunk_list, (void *)new_label_chunk); | |
2305 | ||
2306 | /* let's update current if needed */ | |
2307 | if (!current_label_chunk) | |
2308 | current_label_chunk = listtail(label_chunk_list); | |
2309 | } | |
2310 | ||
f4ec681c BA |
2311 | void |
2312 | lde_free_label(uint32_t label) | |
2313 | { | |
2314 | struct listnode *node; | |
2315 | struct label_chunk *label_chunk; | |
2316 | uint64_t pos; | |
2317 | ||
2318 | for (ALL_LIST_ELEMENTS_RO(label_chunk_list, node, label_chunk)) { | |
2319 | if (label <= label_chunk->end && label >= label_chunk->start) { | |
2320 | pos = 1ULL << (label - label_chunk->start); | |
2321 | label_chunk->used_mask &= ~pos; | |
2322 | /* if nobody is using this chunk and it's not current_label_chunk, then free it */ | |
2323 | if (!label_chunk->used_mask && (current_label_chunk != node)) { | |
2324 | if (lde_release_label_chunk(label_chunk->start, label_chunk->end) != 0) | |
2325 | log_warnx("%s: Error releasing label chunk!", __func__); | |
2326 | else { | |
2327 | listnode_delete(label_chunk_list, label_chunk); | |
2328 | lde_del_label_chunk(label_chunk); | |
2329 | } | |
2330 | } | |
2331 | break; | |
2332 | } | |
2333 | } | |
2334 | return; | |
2335 | } | |
2336 | ||
fea12efb | 2337 | static uint32_t |
2338 | lde_get_next_label(void) | |
2339 | { | |
5afba51d | 2340 | struct label_chunk *label_chunk; |
2a178cdd RW |
2341 | uint32_t i, size; |
2342 | uint64_t pos; | |
5afba51d | 2343 | uint32_t label = NO_LABEL; |
fea12efb | 2344 | |
2345 | while (current_label_chunk) { | |
2346 | label_chunk = listgetdata(current_label_chunk); | |
2347 | if (!label_chunk) | |
2348 | goto end; | |
2349 | ||
2350 | /* try to get next free label in currently used label chunk */ | |
2351 | size = label_chunk->end - label_chunk->start + 1; | |
2352 | for (i = 0, pos = 1; i < size; i++, pos <<= 1) { | |
2353 | if (!(pos & label_chunk->used_mask)) { | |
2354 | label_chunk->used_mask |= pos; | |
2355 | label = label_chunk->start + i; | |
2356 | goto end; | |
2357 | } | |
2358 | } | |
2359 | current_label_chunk = listnextnode(current_label_chunk); | |
2360 | } | |
2361 | ||
2362 | end: | |
2363 | /* we moved till the last chunk, or were not able to find a label, | |
2364 | so let's ask for another one */ | |
5afba51d RW |
2365 | if (!current_label_chunk || |
2366 | current_label_chunk == listtail(label_chunk_list) || | |
2367 | label == NO_LABEL) { | |
fea12efb | 2368 | if (lde_get_label_chunk() != 0) |
2369 | log_warn("%s: Error getting label chunk!", __func__); | |
2370 | ||
2371 | } | |
2372 | ||
5afba51d | 2373 | return (label); |
fea12efb | 2374 | } |
2d1aa1e8 | 2375 | |
2376 | static void | |
2377 | lde_check_filter_af(int af, struct ldpd_af_conf *af_conf, | |
2378 | const char *filter_name) | |
2379 | { | |
2380 | if (strcmp(af_conf->acl_label_allocate_for, filter_name) == 0) | |
2381 | lde_change_allocate_filter(af); | |
2382 | if ((strcmp(af_conf->acl_label_advertise_to, filter_name) == 0) | |
2383 | || (strcmp(af_conf->acl_label_advertise_for, filter_name) == 0)) | |
2384 | lde_change_advertise_filter(af); | |
2385 | if ((strcmp(af_conf->acl_label_accept_for, filter_name) == 0) | |
2386 | || (strcmp(af_conf->acl_label_accept_from, filter_name) == 0)) | |
2387 | lde_change_accept_filter(af); | |
2388 | if (strcmp(af_conf->acl_label_expnull_for, filter_name) == 0) | |
2389 | lde_change_expnull_for_filter(af); | |
2390 | } | |
95535717 | 2391 | |
2392 | void lde_route_update(struct iface *iface, int af) | |
2393 | { | |
2394 | struct fec *f; | |
2395 | struct fec_node *fn; | |
2396 | struct fec_nh *fnh; | |
2397 | struct lde_nbr *ln; | |
2398 | ||
2399 | /* update label of non-connected routes */ | |
2400 | log_debug("update labels for interface %s", iface->name); | |
2401 | RB_FOREACH(f, fec_tree, &ft) { | |
2402 | fn = (struct fec_node *)f; | |
2403 | if (IS_MPLS_UNRESERVED_LABEL(fn->local_label)) | |
2404 | continue; | |
2405 | ||
2406 | switch (af) { | |
2407 | case AF_INET: | |
2408 | if (fn->fec.type != FEC_TYPE_IPV4) | |
2409 | continue; | |
2410 | break; | |
2411 | case AF_INET6: | |
2412 | if (fn->fec.type != FEC_TYPE_IPV6) | |
2413 | continue; | |
2414 | break; | |
2415 | default: | |
2416 | /* unspecified so process both address families */ | |
2417 | break; | |
2418 | } | |
2419 | ||
2420 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
2421 | /* | |
2422 | * If connected leave existing label. If LDP | |
2423 | * configured on interface or a static route | |
2424 | * may need new label. If no LDP configured | |
2425 | * treat fec as a connected route | |
2426 | */ | |
2427 | if (fnh->flags & F_FEC_NH_CONNECTED) | |
2428 | break; | |
2429 | ||
2430 | if (fnh->ifindex != iface->ifindex) | |
2431 | continue; | |
2432 | ||
2433 | fnh->flags &= ~F_FEC_NH_NO_LDP; | |
2434 | if (IS_MPLS_RESERVED_LABEL(fn->local_label)) { | |
2435 | fn->local_label = NO_LABEL; | |
2436 | fn->local_label = lde_update_label(fn); | |
2437 | if (fn->local_label != NO_LABEL) | |
2438 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2439 | lde_send_labelmapping( | |
2440 | ln, fn, 0); | |
2441 | } | |
2442 | break; | |
2443 | } | |
2444 | } | |
2445 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2446 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, | |
2447 | 0, NULL, 0); | |
2448 | } | |
2449 | ||
2450 | void lde_route_update_release(struct iface *iface, int af) | |
2451 | { | |
2452 | struct lde_nbr *ln; | |
2453 | struct fec *f; | |
2454 | struct fec_node *fn; | |
2455 | struct fec_nh *fnh; | |
2456 | ||
2457 | /* update label of interfaces no longer running LDP */ | |
2458 | log_debug("release all labels for interface %s af %s", iface->name, | |
2459 | af == AF_INET ? "ipv4" : "ipv6"); | |
2460 | RB_FOREACH(f, fec_tree, &ft) { | |
2461 | fn = (struct fec_node *)f; | |
2462 | ||
2463 | switch (af) { | |
2464 | case AF_INET: | |
2465 | if (fn->fec.type != FEC_TYPE_IPV4) | |
2466 | continue; | |
2467 | break; | |
2468 | case AF_INET6: | |
2469 | if (fn->fec.type != FEC_TYPE_IPV6) | |
2470 | continue; | |
2471 | break; | |
2472 | default: | |
2473 | fatalx("lde_route_update_release: unknown af"); | |
2474 | } | |
2475 | ||
2476 | if (fn->local_label == NO_LABEL) | |
2477 | continue; | |
2478 | ||
2479 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
2480 | /* | |
2481 | * If connected leave existing label. If LDP | |
2482 | * removed from interface may need new label | |
2483 | * and would be treated as a connected route | |
2484 | */ | |
2485 | if (fnh->flags & F_FEC_NH_CONNECTED) | |
2486 | break; | |
2487 | ||
2488 | if (fnh->ifindex != iface->ifindex) | |
2489 | continue; | |
2490 | ||
2491 | fnh->flags |= F_FEC_NH_NO_LDP; | |
2492 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2493 | lde_send_labelwithdraw(ln, fn, NULL, NULL); | |
2494 | lde_free_label(fn->local_label); | |
2495 | fn->local_label = NO_LABEL; | |
2496 | fn->local_label = lde_update_label(fn); | |
2497 | if (fn->local_label != NO_LABEL) | |
2498 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2499 | lde_send_labelmapping(ln, fn, 0); | |
2500 | break; | |
2501 | } | |
2502 | } | |
2503 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2504 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, | |
2505 | 0, NULL, 0); | |
2506 | } | |
2507 | ||
2508 | void lde_route_update_release_all(int af) | |
2509 | { | |
2510 | struct lde_nbr *ln; | |
2511 | struct fec *f; | |
2512 | struct fec_node *fn; | |
2513 | struct fec_nh *fnh; | |
2514 | ||
2515 | /* remove labels from all interfaces as LDP is no longer running for | |
2516 | * this address family | |
2517 | */ | |
2518 | log_debug("release all labels for address family %s", | |
2519 | af == AF_INET ? "ipv4" : "ipv6"); | |
2520 | RB_FOREACH(f, fec_tree, &ft) { | |
2521 | fn = (struct fec_node *)f; | |
2522 | switch (af) { | |
2523 | case AF_INET: | |
2524 | if (fn->fec.type != FEC_TYPE_IPV4) | |
2525 | continue; | |
2526 | break; | |
2527 | case AF_INET6: | |
2528 | if (fn->fec.type != FEC_TYPE_IPV6) | |
2529 | continue; | |
2530 | break; | |
2531 | default: | |
2532 | fatalx("lde_route_update_release: unknown af"); | |
2533 | } | |
2534 | ||
2535 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2536 | lde_send_labelwithdraw(ln, fn, NULL, NULL); | |
2537 | ||
2538 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
2539 | fnh->flags |= F_FEC_NH_NO_LDP; | |
2540 | lde_send_delete_klabel(fn, fnh); | |
2541 | } | |
2542 | } | |
2543 | } |