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acddc0ed | 1 | // SPDX-License-Identifier: ISC |
8429abe0 RW |
2 | /* $OpenBSD$ */ |
3 | ||
4 | /* | |
5 | * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org> | |
6 | * Copyright (c) 2004, 2005 Claudio Jeker <claudio@openbsd.org> | |
7 | * Copyright (c) 2004 Esben Norby <norby@openbsd.org> | |
8 | * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> | |
8429abe0 RW |
9 | */ |
10 | ||
eac6e3f0 | 11 | #include <zebra.h> |
8429abe0 RW |
12 | |
13 | #include "ldp.h" | |
14 | #include "ldpd.h" | |
15 | #include "ldpe.h" | |
16 | #include "log.h" | |
17 | #include "lde.h" | |
eac6e3f0 | 18 | #include "ldp_debug.h" |
077d336a | 19 | #include "rlfa.h" |
8429abe0 | 20 | |
eac6e3f0 RW |
21 | #include <lib/log.h> |
22 | #include "memory.h" | |
23 | #include "privs.h" | |
24 | #include "sigevent.h" | |
25 | #include "mpls.h" | |
fea12efb | 26 | #include <lib/linklist.h> |
27 | #include "zclient.h" | |
28 | #include "stream.h" | |
29 | #include "network.h" | |
689f5a8c | 30 | #include "libfrr.h" |
eac6e3f0 RW |
31 | |
32 | static void lde_shutdown(void); | |
e6685141 DS |
33 | static void lde_dispatch_imsg(struct event *thread); |
34 | static void lde_dispatch_parent(struct event *thread); | |
45926e58 RZ |
35 | static __inline int lde_nbr_compare(const struct lde_nbr *, |
36 | const struct lde_nbr *); | |
8429abe0 RW |
37 | static struct lde_nbr *lde_nbr_new(uint32_t, struct lde_nbr *); |
38 | static void lde_nbr_del(struct lde_nbr *); | |
39 | static struct lde_nbr *lde_nbr_find(uint32_t); | |
40 | static void lde_nbr_clear(void); | |
41 | static void lde_nbr_addr_update(struct lde_nbr *, | |
42 | struct lde_addr *, int); | |
45926e58 RZ |
43 | static __inline int lde_map_compare(const struct lde_map *, |
44 | const struct lde_map *); | |
8429abe0 RW |
45 | static void lde_map_free(void *); |
46 | static int lde_address_add(struct lde_nbr *, struct lde_addr *); | |
47 | static int lde_address_del(struct lde_nbr *, struct lde_addr *); | |
48 | static void lde_address_list_free(struct lde_nbr *); | |
9d694b0b | 49 | static void zclient_sync_init(void); |
fea12efb | 50 | static void lde_label_list_init(void); |
5afba51d | 51 | static int lde_get_label_chunk(void); |
fea12efb | 52 | static void on_get_label_chunk_response(uint32_t start, uint32_t end); |
53 | static uint32_t lde_get_next_label(void); | |
aff1743c KS |
54 | static bool lde_fec_connected(const struct fec_node *); |
55 | static bool lde_fec_outside_mpls_network(const struct fec_node *); | |
2d1aa1e8 | 56 | static void lde_check_filter_af(int, struct ldpd_af_conf *, |
57 | const char *); | |
8429abe0 RW |
58 | |
59 | RB_GENERATE(nbr_tree, lde_nbr, entry, lde_nbr_compare) | |
d3e1887a | 60 | RB_GENERATE(lde_map_head, lde_map, entry, lde_map_compare) |
8429abe0 RW |
61 | |
62 | struct ldpd_conf *ldeconf; | |
63 | struct nbr_tree lde_nbrs = RB_INITIALIZER(&lde_nbrs); | |
64 | ||
65 | static struct imsgev *iev_ldpe; | |
59c5b83b | 66 | static struct imsgev iev_main_sync_data; |
28e8294c | 67 | static struct imsgev *iev_main, *iev_main_sync; |
8429abe0 | 68 | |
eac6e3f0 RW |
69 | /* lde privileges */ |
70 | static zebra_capabilities_t _caps_p [] = | |
8429abe0 | 71 | { |
342213ea | 72 | ZCAP_NET_ADMIN |
eac6e3f0 | 73 | }; |
8429abe0 | 74 | |
eac6e3f0 RW |
75 | static struct zebra_privs_t lde_privs = |
76 | { | |
eac6e3f0 RW |
77 | #if defined(VTY_GROUP) |
78 | .vty_group = VTY_GROUP, | |
79 | #endif | |
80 | .caps_p = _caps_p, | |
81 | .cap_num_p = array_size(_caps_p), | |
82 | .cap_num_i = 0 | |
83 | }; | |
84 | ||
fea12efb | 85 | /* List of chunks of labels externally assigned by Zebra */ |
5afba51d RW |
86 | static struct list *label_chunk_list; |
87 | static struct listnode *current_label_chunk; | |
88 | ||
89 | /* Synchronous zclient to request labels */ | |
90 | static struct zclient *zclient_sync; | |
fea12efb | 91 | |
eac6e3f0 RW |
92 | /* SIGINT / SIGTERM handler. */ |
93 | static void | |
94 | sigint(void) | |
95 | { | |
96 | lde_shutdown(); | |
8429abe0 RW |
97 | } |
98 | ||
7cc91e67 | 99 | static struct frr_signal_t lde_signals[] = |
eac6e3f0 | 100 | { |
1e7e440f RW |
101 | { |
102 | .signal = SIGHUP, | |
103 | /* ignore */ | |
104 | }, | |
eac6e3f0 RW |
105 | { |
106 | .signal = SIGINT, | |
107 | .handler = &sigint, | |
108 | }, | |
109 | { | |
110 | .signal = SIGTERM, | |
111 | .handler = &sigint, | |
112 | }, | |
113 | }; | |
114 | ||
8429abe0 RW |
115 | /* label decision engine */ |
116 | void | |
274f5abf | 117 | lde(void) |
8429abe0 | 118 | { |
eac6e3f0 | 119 | #ifdef HAVE_SETPROCTITLE |
8429abe0 | 120 | setproctitle("label decision engine"); |
eac6e3f0 | 121 | #endif |
8429abe0 | 122 | ldpd_process = PROC_LDE_ENGINE; |
fa68f9da | 123 | log_procname = log_procnames[PROC_LDE_ENGINE]; |
8429abe0 | 124 | |
f9a4d683 | 125 | master = frr_init(); |
adf8924d DL |
126 | /* no frr_config_fork() here, allow frr_pthread to create threads */ |
127 | frr_is_after_fork = true; | |
8429abe0 RW |
128 | |
129 | /* setup signal handler */ | |
eac6e3f0 | 130 | signal_init(master, array_size(lde_signals), lde_signals); |
8429abe0 | 131 | |
28e8294c RW |
132 | /* setup pipes and event handlers to the parent process */ |
133 | if ((iev_main = calloc(1, sizeof(struct imsgev))) == NULL) | |
8429abe0 | 134 | fatal(NULL); |
28e8294c | 135 | imsg_init(&iev_main->ibuf, LDPD_FD_ASYNC); |
eac6e3f0 | 136 | iev_main->handler_read = lde_dispatch_parent; |
907a2395 DS |
137 | event_add_read(master, iev_main->handler_read, iev_main, |
138 | iev_main->ibuf.fd, &iev_main->ev_read); | |
eac6e3f0 | 139 | iev_main->handler_write = ldp_write_handler; |
28e8294c | 140 | |
59c5b83b DS |
141 | memset(&iev_main_sync_data, 0, sizeof(iev_main_sync_data)); |
142 | iev_main_sync = &iev_main_sync_data; | |
28e8294c | 143 | imsg_init(&iev_main_sync->ibuf, LDPD_FD_SYNC); |
eac6e3f0 | 144 | |
274f5abf RW |
145 | /* create base configuration */ |
146 | ldeconf = config_new_empty(); | |
147 | ||
e6685141 | 148 | struct event thread; |
de2754be DS |
149 | while (event_fetch(master, &thread)) |
150 | event_call(&thread); | |
f9a4d683 KS |
151 | |
152 | /* NOTREACHED */ | |
153 | return; | |
274f5abf RW |
154 | } |
155 | ||
156 | void | |
157 | lde_init(struct ldpd_init *init) | |
158 | { | |
159 | /* drop privileges */ | |
af7e63a3 RW |
160 | lde_privs.user = init->user; |
161 | lde_privs.group = init->group; | |
37a1f2fb | 162 | zprivs_preinit(&lde_privs); |
274f5abf RW |
163 | zprivs_init(&lde_privs); |
164 | ||
eac6e3f0 | 165 | /* start the LIB garbage collector */ |
8429abe0 RW |
166 | lde_gc_start_timer(); |
167 | ||
fea12efb | 168 | /* Init synchronous zclient and label list */ |
689f5a8c DL |
169 | frr_zclient_addr(&zclient_addr, &zclient_addr_len, |
170 | init->zclient_serv_path); | |
9d694b0b | 171 | zclient_sync_init(); |
8429abe0 RW |
172 | } |
173 | ||
eac6e3f0 | 174 | static void |
8429abe0 RW |
175 | lde_shutdown(void) |
176 | { | |
177 | /* close pipes */ | |
835a7376 RW |
178 | if (iev_ldpe) { |
179 | msgbuf_clear(&iev_ldpe->ibuf.w); | |
180 | close(iev_ldpe->ibuf.fd); | |
50732983 | 181 | iev_ldpe->ibuf.fd = -1; |
835a7376 | 182 | } |
8429abe0 RW |
183 | msgbuf_clear(&iev_main->ibuf.w); |
184 | close(iev_main->ibuf.fd); | |
50732983 | 185 | iev_main->ibuf.fd = -1; |
28e8294c RW |
186 | msgbuf_clear(&iev_main_sync->ibuf.w); |
187 | close(iev_main_sync->ibuf.fd); | |
50732983 | 188 | iev_main_sync->ibuf.fd = -1; |
8429abe0 RW |
189 | |
190 | lde_gc_stop_timer(); | |
191 | lde_nbr_clear(); | |
192 | fec_tree_clear(); | |
193 | ||
194 | config_clear(ldeconf); | |
195 | ||
835a7376 RW |
196 | if (iev_ldpe) |
197 | free(iev_ldpe); | |
8429abe0 RW |
198 | free(iev_main); |
199 | ||
200 | log_info("label decision engine exiting"); | |
b12a63f1 MS |
201 | |
202 | zlog_fini(); | |
8429abe0 RW |
203 | exit(0); |
204 | } | |
205 | ||
206 | /* imesg */ | |
eac6e3f0 | 207 | int |
8429abe0 RW |
208 | lde_imsg_compose_parent(int type, pid_t pid, void *data, uint16_t datalen) |
209 | { | |
50732983 RW |
210 | if (iev_main->ibuf.fd == -1) |
211 | return (0); | |
8429abe0 RW |
212 | return (imsg_compose_event(iev_main, type, 0, pid, -1, data, datalen)); |
213 | } | |
214 | ||
f2232fdf RW |
215 | void |
216 | lde_imsg_compose_parent_sync(int type, pid_t pid, void *data, uint16_t datalen) | |
217 | { | |
50732983 RW |
218 | if (iev_main_sync->ibuf.fd == -1) |
219 | return; | |
f2232fdf RW |
220 | imsg_compose_event(iev_main_sync, type, 0, pid, -1, data, datalen); |
221 | imsg_flush(&iev_main_sync->ibuf); | |
222 | } | |
223 | ||
8429abe0 RW |
224 | int |
225 | lde_imsg_compose_ldpe(int type, uint32_t peerid, pid_t pid, void *data, | |
226 | uint16_t datalen) | |
227 | { | |
50732983 RW |
228 | if (iev_ldpe->ibuf.fd == -1) |
229 | return (0); | |
8429abe0 RW |
230 | return (imsg_compose_event(iev_ldpe, type, peerid, pid, |
231 | -1, data, datalen)); | |
232 | } | |
233 | ||
234 | /* ARGSUSED */ | |
e6685141 | 235 | static void lde_dispatch_imsg(struct event *thread) |
8429abe0 | 236 | { |
e16d030c | 237 | struct imsgev *iev = EVENT_ARG(thread); |
8429abe0 RW |
238 | struct imsgbuf *ibuf = &iev->ibuf; |
239 | struct imsg imsg; | |
240 | struct lde_nbr *ln; | |
236c6935 RW |
241 | struct map *map; |
242 | struct lde_addr *lde_addr; | |
243 | struct notify_msg *nm; | |
8429abe0 | 244 | ssize_t n; |
eac6e3f0 | 245 | int shut = 0; |
8429abe0 | 246 | |
eac6e3f0 RW |
247 | iev->ev_read = NULL; |
248 | ||
249 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
250 | fatal("imsg_read error"); | |
251 | if (n == 0) /* connection closed */ | |
252 | shut = 1; | |
8429abe0 RW |
253 | |
254 | for (;;) { | |
255 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
256 | fatal("lde_dispatch_imsg: imsg_get error"); | |
257 | if (n == 0) | |
258 | break; | |
259 | ||
260 | switch (imsg.hdr.type) { | |
261 | case IMSG_LABEL_MAPPING_FULL: | |
262 | ln = lde_nbr_find(imsg.hdr.peerid); | |
263 | if (ln == NULL) { | |
575f30ce | 264 | log_debug("%s: cannot find lde neighbor", __func__); |
8429abe0 RW |
265 | break; |
266 | } | |
267 | ||
268 | fec_snap(ln); | |
269 | break; | |
270 | case IMSG_LABEL_MAPPING: | |
271 | case IMSG_LABEL_REQUEST: | |
272 | case IMSG_LABEL_RELEASE: | |
273 | case IMSG_LABEL_WITHDRAW: | |
274 | case IMSG_LABEL_ABORT: | |
575f30ce | 275 | if (imsg.hdr.len - IMSG_HEADER_SIZE != sizeof(struct map)) |
8429abe0 | 276 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 277 | map = imsg.data; |
8429abe0 RW |
278 | |
279 | ln = lde_nbr_find(imsg.hdr.peerid); | |
280 | if (ln == NULL) { | |
575f30ce | 281 | log_debug("%s: cannot find lde neighbor", __func__); |
8429abe0 RW |
282 | break; |
283 | } | |
284 | ||
285 | switch (imsg.hdr.type) { | |
286 | case IMSG_LABEL_MAPPING: | |
4272a064 | 287 | lde_check_mapping(map, ln, 1); |
8429abe0 RW |
288 | break; |
289 | case IMSG_LABEL_REQUEST: | |
236c6935 | 290 | lde_check_request(map, ln); |
8429abe0 RW |
291 | break; |
292 | case IMSG_LABEL_RELEASE: | |
236c6935 | 293 | lde_check_release(map, ln); |
8429abe0 RW |
294 | break; |
295 | case IMSG_LABEL_WITHDRAW: | |
236c6935 | 296 | lde_check_withdraw(map, ln); |
8429abe0 RW |
297 | break; |
298 | case IMSG_LABEL_ABORT: | |
299 | /* not necessary */ | |
300 | break; | |
301 | } | |
302 | break; | |
303 | case IMSG_ADDRESS_ADD: | |
575f30ce | 304 | if (imsg.hdr.len - IMSG_HEADER_SIZE != sizeof(struct lde_addr)) |
8429abe0 | 305 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 306 | lde_addr = imsg.data; |
8429abe0 RW |
307 | |
308 | ln = lde_nbr_find(imsg.hdr.peerid); | |
309 | if (ln == NULL) { | |
575f30ce | 310 | log_debug("%s: cannot find lde neighbor", __func__); |
8429abe0 RW |
311 | break; |
312 | } | |
575f30ce | 313 | |
236c6935 | 314 | if (lde_address_add(ln, lde_addr) < 0) { |
3efd0893 | 315 | log_debug("%s: cannot add address %s, it already exists", __func__, |
236c6935 | 316 | log_addr(lde_addr->af, &lde_addr->addr)); |
8429abe0 RW |
317 | } |
318 | break; | |
319 | case IMSG_ADDRESS_DEL: | |
575f30ce | 320 | if (imsg.hdr.len - IMSG_HEADER_SIZE != 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) { | |
575f30ce | 326 | log_debug("%s: cannot find lde neighbor", __func__); |
8429abe0 RW |
327 | break; |
328 | } | |
575f30ce | 329 | |
236c6935 | 330 | if (lde_address_del(ln, lde_addr) < 0) { |
3efd0893 | 331 | log_debug("%s: cannot delete address %s, it does not exist", __func__, |
236c6935 | 332 | log_addr(lde_addr->af, &lde_addr->addr)); |
8429abe0 RW |
333 | } |
334 | break; | |
335 | case IMSG_NOTIFICATION: | |
575f30ce | 336 | if (imsg.hdr.len - IMSG_HEADER_SIZE != sizeof(struct notify_msg)) |
8429abe0 | 337 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 338 | nm = imsg.data; |
8429abe0 RW |
339 | |
340 | ln = lde_nbr_find(imsg.hdr.peerid); | |
341 | if (ln == NULL) { | |
575f30ce | 342 | log_debug("%s: cannot find lde neighbor", __func__); |
8429abe0 RW |
343 | break; |
344 | } | |
345 | ||
236c6935 | 346 | switch (nm->status_code) { |
8429abe0 | 347 | case S_PW_STATUS: |
236c6935 | 348 | l2vpn_recv_pw_status(ln, nm); |
8429abe0 | 349 | break; |
257799cd RW |
350 | case S_ENDOFLIB: |
351 | /* | |
352 | * Do nothing for now. Should be useful in | |
353 | * the future when we implement LDP-IGP | |
354 | * Synchronization (RFC 5443) and Graceful | |
355 | * Restart (RFC 3478). | |
356 | */ | |
8429abe0 RW |
357 | default: |
358 | break; | |
359 | } | |
360 | break; | |
361 | case IMSG_NEIGHBOR_UP: | |
575f30ce | 362 | if (imsg.hdr.len - IMSG_HEADER_SIZE != sizeof(struct lde_nbr)) |
8429abe0 RW |
363 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
364 | ||
365 | if (lde_nbr_find(imsg.hdr.peerid)) | |
3efd0893 | 366 | fatalx("lde_dispatch_imsg: neighbor already exists"); |
8429abe0 RW |
367 | lde_nbr_new(imsg.hdr.peerid, imsg.data); |
368 | break; | |
369 | case IMSG_NEIGHBOR_DOWN: | |
370 | lde_nbr_del(lde_nbr_find(imsg.hdr.peerid)); | |
371 | break; | |
372 | case IMSG_CTL_SHOW_LIB: | |
373 | rt_dump(imsg.hdr.pid); | |
374 | ||
375 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
376 | imsg.hdr.pid, NULL, 0); | |
377 | break; | |
378 | case IMSG_CTL_SHOW_L2VPN_PW: | |
379 | l2vpn_pw_ctl(imsg.hdr.pid); | |
380 | ||
575f30ce | 381 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, imsg.hdr.pid, NULL, 0); |
8429abe0 RW |
382 | break; |
383 | case IMSG_CTL_SHOW_L2VPN_BINDING: | |
384 | l2vpn_binding_ctl(imsg.hdr.pid); | |
385 | ||
575f30ce | 386 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, imsg.hdr.pid, NULL, 0); |
8429abe0 | 387 | break; |
8429abe0 | 388 | default: |
575f30ce | 389 | log_debug("%s: unexpected imsg %d", __func__, imsg.hdr.type); |
8429abe0 RW |
390 | break; |
391 | } | |
392 | imsg_free(&imsg); | |
393 | } | |
394 | if (!shut) | |
395 | imsg_event_add(iev); | |
396 | else { | |
eac6e3f0 | 397 | /* this pipe is dead, so remove the event handlers and exit */ |
e16d030c DS |
398 | EVENT_OFF(iev->ev_read); |
399 | EVENT_OFF(iev->ev_write); | |
eac6e3f0 | 400 | lde_shutdown(); |
8429abe0 RW |
401 | } |
402 | } | |
403 | ||
404 | /* ARGSUSED */ | |
e6685141 | 405 | static void lde_dispatch_parent(struct event *thread) |
8429abe0 RW |
406 | { |
407 | static struct ldpd_conf *nconf; | |
52b530fc | 408 | struct iface *iface, *niface; |
8429abe0 RW |
409 | struct tnbr *ntnbr; |
410 | struct nbr_params *nnbrp; | |
52b530fc RW |
411 | static struct l2vpn *l2vpn, *nl2vpn; |
412 | struct l2vpn_if *lif, *nlif; | |
413 | struct l2vpn_pw *pw, *npw; | |
8429abe0 | 414 | struct imsg imsg; |
52b530fc | 415 | struct kif *kif; |
236c6935 | 416 | struct kroute *kr; |
11bf8e13 | 417 | int fd; |
e16d030c | 418 | struct imsgev *iev = EVENT_ARG(thread); |
8429abe0 RW |
419 | struct imsgbuf *ibuf = &iev->ibuf; |
420 | ssize_t n; | |
421 | int shut = 0; | |
422 | struct fec fec; | |
2d1aa1e8 | 423 | struct ldp_access *laccess; |
077d336a RW |
424 | struct ldp_rlfa_node *rnode, *rntmp; |
425 | struct ldp_rlfa_client *rclient; | |
426 | struct zapi_rlfa_request *rlfa_req; | |
427 | struct zapi_rlfa_igp *rlfa_igp; | |
8429abe0 | 428 | |
eac6e3f0 RW |
429 | iev->ev_read = NULL; |
430 | ||
431 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
432 | fatal("imsg_read error"); | |
433 | if (n == 0) /* connection closed */ | |
434 | shut = 1; | |
8429abe0 RW |
435 | |
436 | for (;;) { | |
437 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
438 | fatal("lde_dispatch_parent: imsg_get error"); | |
439 | if (n == 0) | |
440 | break; | |
441 | ||
442 | switch (imsg.hdr.type) { | |
52b530fc | 443 | case IMSG_IFSTATUS: |
575f30ce | 444 | if (imsg.hdr.len != IMSG_HEADER_SIZE + sizeof(struct kif)) |
52b530fc RW |
445 | fatalx("IFSTATUS imsg with wrong len"); |
446 | kif = imsg.data; | |
447 | ||
448 | iface = if_lookup_name(ldeconf, kif->ifname); | |
449 | if (iface) { | |
450 | if_update_info(iface, kif); | |
95535717 | 451 | |
452 | /* if up see if any labels need to be updated */ | |
453 | if (kif->operative) | |
454 | lde_route_update(iface, AF_UNSPEC); | |
52b530fc RW |
455 | break; |
456 | } | |
457 | ||
458 | RB_FOREACH(l2vpn, l2vpn_head, &ldeconf->l2vpn_tree) { | |
459 | lif = l2vpn_if_find(l2vpn, kif->ifname); | |
460 | if (lif) { | |
461 | l2vpn_if_update_info(lif, kif); | |
462 | break; | |
463 | } | |
464 | pw = l2vpn_pw_find(l2vpn, kif->ifname); | |
465 | if (pw) { | |
466 | l2vpn_pw_update_info(pw, kif); | |
467 | break; | |
468 | } | |
469 | } | |
470 | break; | |
87b5f1b7 | 471 | case IMSG_PW_UPDATE: |
575f30ce | 472 | if (imsg.hdr.len != IMSG_HEADER_SIZE + sizeof(struct zapi_pw_status)) |
87b5f1b7 RW |
473 | fatalx("PW_UPDATE imsg with wrong len"); |
474 | ||
475 | if (l2vpn_pw_status_update(imsg.data) != 0) | |
575f30ce | 476 | log_warnx("%s: error updating PW status", __func__); |
87b5f1b7 | 477 | break; |
8429abe0 | 478 | case IMSG_NETWORK_ADD: |
8cb1fc45 | 479 | case IMSG_NETWORK_UPDATE: |
575f30ce | 480 | if (imsg.hdr.len != IMSG_HEADER_SIZE + sizeof(struct kroute)) { |
8429abe0 RW |
481 | log_warnx("%s: wrong imsg len", __func__); |
482 | break; | |
483 | } | |
236c6935 | 484 | kr = imsg.data; |
8429abe0 | 485 | |
236c6935 | 486 | switch (kr->af) { |
8429abe0 RW |
487 | case AF_INET: |
488 | fec.type = FEC_TYPE_IPV4; | |
236c6935 RW |
489 | fec.u.ipv4.prefix = kr->prefix.v4; |
490 | fec.u.ipv4.prefixlen = kr->prefixlen; | |
8429abe0 RW |
491 | break; |
492 | case AF_INET6: | |
493 | fec.type = FEC_TYPE_IPV6; | |
236c6935 RW |
494 | fec.u.ipv6.prefix = kr->prefix.v6; |
495 | fec.u.ipv6.prefixlen = kr->prefixlen; | |
8429abe0 RW |
496 | break; |
497 | default: | |
498 | fatalx("lde_dispatch_parent: unknown af"); | |
499 | } | |
500 | ||
501 | switch (imsg.hdr.type) { | |
502 | case IMSG_NETWORK_ADD: | |
236c6935 | 503 | lde_kernel_insert(&fec, kr->af, &kr->nexthop, |
575f30ce | 504 | kr->ifindex, kr->route_type, kr->route_instance, |
505 | CHECK_FLAG(kr->flags, F_CONNECTED), NULL); | |
8429abe0 | 506 | break; |
8cb1fc45 RW |
507 | case IMSG_NETWORK_UPDATE: |
508 | lde_kernel_update(&fec); | |
8429abe0 RW |
509 | break; |
510 | } | |
511 | break; | |
512 | case IMSG_SOCKET_IPC: | |
513 | if (iev_ldpe) { | |
3efd0893 | 514 | log_warnx("%s: received unexpected imsg fd to ldpe", __func__); |
8429abe0 RW |
515 | break; |
516 | } | |
517 | if ((fd = imsg.fd) == -1) { | |
3efd0893 | 518 | log_warnx("%s: expected to receive imsg fd to ldpe but didn't receive any", __func__); |
8429abe0 RW |
519 | break; |
520 | } | |
521 | ||
522 | if ((iev_ldpe = malloc(sizeof(struct imsgev))) == NULL) | |
523 | fatal(NULL); | |
524 | imsg_init(&iev_ldpe->ibuf, fd); | |
eac6e3f0 | 525 | iev_ldpe->handler_read = lde_dispatch_imsg; |
907a2395 DS |
526 | event_add_read(master, iev_ldpe->handler_read, iev_ldpe, |
527 | iev_ldpe->ibuf.fd, &iev_ldpe->ev_read); | |
eac6e3f0 RW |
528 | iev_ldpe->handler_write = ldp_write_handler; |
529 | iev_ldpe->ev_write = NULL; | |
8429abe0 | 530 | break; |
274f5abf RW |
531 | case IMSG_INIT: |
532 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
533 | sizeof(struct ldpd_init)) | |
534 | fatalx("INIT imsg with wrong len"); | |
535 | ||
536 | memcpy(&init, imsg.data, sizeof(init)); | |
537 | lde_init(&init); | |
538 | break; | |
f9a4d683 KS |
539 | case IMSG_AGENTX_ENABLED: |
540 | ldp_agentx_enabled(); | |
541 | break; | |
8429abe0 | 542 | case IMSG_RECONF_CONF: |
575f30ce | 543 | if ((nconf = malloc(sizeof(struct ldpd_conf))) == NULL) |
8429abe0 RW |
544 | fatal(NULL); |
545 | memcpy(nconf, imsg.data, sizeof(struct ldpd_conf)); | |
546 | ||
45926e58 RZ |
547 | RB_INIT(iface_head, &nconf->iface_tree); |
548 | RB_INIT(tnbr_head, &nconf->tnbr_tree); | |
549 | RB_INIT(nbrp_head, &nconf->nbrp_tree); | |
550 | RB_INIT(l2vpn_head, &nconf->l2vpn_tree); | |
8429abe0 RW |
551 | break; |
552 | case IMSG_RECONF_IFACE: | |
553 | if ((niface = malloc(sizeof(struct iface))) == NULL) | |
554 | fatal(NULL); | |
555 | memcpy(niface, imsg.data, sizeof(struct iface)); | |
556 | ||
7d3d7491 | 557 | RB_INSERT(iface_head, &nconf->iface_tree, niface); |
8429abe0 RW |
558 | break; |
559 | case IMSG_RECONF_TNBR: | |
560 | if ((ntnbr = malloc(sizeof(struct tnbr))) == NULL) | |
561 | fatal(NULL); | |
562 | memcpy(ntnbr, imsg.data, sizeof(struct tnbr)); | |
563 | ||
7989cdba | 564 | RB_INSERT(tnbr_head, &nconf->tnbr_tree, ntnbr); |
8429abe0 RW |
565 | break; |
566 | case IMSG_RECONF_NBRP: | |
567 | if ((nnbrp = malloc(sizeof(struct nbr_params))) == NULL) | |
568 | fatal(NULL); | |
569 | memcpy(nnbrp, imsg.data, sizeof(struct nbr_params)); | |
570 | ||
76c4abd1 | 571 | RB_INSERT(nbrp_head, &nconf->nbrp_tree, nnbrp); |
8429abe0 RW |
572 | break; |
573 | case IMSG_RECONF_L2VPN: | |
574 | if ((nl2vpn = malloc(sizeof(struct l2vpn))) == NULL) | |
575 | fatal(NULL); | |
576 | memcpy(nl2vpn, imsg.data, sizeof(struct l2vpn)); | |
577 | ||
45926e58 RZ |
578 | RB_INIT(l2vpn_if_head, &nl2vpn->if_tree); |
579 | RB_INIT(l2vpn_pw_head, &nl2vpn->pw_tree); | |
580 | RB_INIT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree); | |
8429abe0 | 581 | |
90d7e7bd | 582 | RB_INSERT(l2vpn_head, &nconf->l2vpn_tree, nl2vpn); |
8429abe0 RW |
583 | break; |
584 | case IMSG_RECONF_L2VPN_IF: | |
585 | if ((nlif = malloc(sizeof(struct l2vpn_if))) == NULL) | |
586 | fatal(NULL); | |
587 | memcpy(nlif, imsg.data, sizeof(struct l2vpn_if)); | |
588 | ||
029c1958 | 589 | RB_INSERT(l2vpn_if_head, &nl2vpn->if_tree, nlif); |
8429abe0 RW |
590 | break; |
591 | case IMSG_RECONF_L2VPN_PW: | |
592 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
593 | fatal(NULL); | |
594 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
595 | ||
20bacaeb | 596 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_tree, npw); |
8429abe0 | 597 | break; |
eac6e3f0 RW |
598 | case IMSG_RECONF_L2VPN_IPW: |
599 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
600 | fatal(NULL); | |
601 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
602 | ||
20bacaeb | 603 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree, npw); |
eac6e3f0 | 604 | break; |
8429abe0 RW |
605 | case IMSG_RECONF_END: |
606 | merge_config(ldeconf, nconf); | |
1d75a89d | 607 | ldp_clear_config(nconf); |
8429abe0 RW |
608 | nconf = NULL; |
609 | break; | |
eac6e3f0 RW |
610 | case IMSG_DEBUG_UPDATE: |
611 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
612 | sizeof(ldp_debug)) { | |
613 | log_warnx("%s: wrong imsg len", __func__); | |
614 | break; | |
615 | } | |
616 | memcpy(&ldp_debug, imsg.data, sizeof(ldp_debug)); | |
617 | break; | |
2d1aa1e8 | 618 | case IMSG_FILTER_UPDATE: |
619 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
620 | sizeof(struct ldp_access)) { | |
621 | log_warnx("%s: wrong imsg len", __func__); | |
622 | break; | |
623 | } | |
624 | laccess = imsg.data; | |
625 | lde_check_filter_af(AF_INET, &ldeconf->ipv4, | |
626 | laccess->name); | |
627 | lde_check_filter_af(AF_INET6, &ldeconf->ipv6, | |
628 | laccess->name); | |
629 | break; | |
077d336a RW |
630 | case IMSG_RLFA_REG: |
631 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
632 | sizeof(struct zapi_rlfa_request)) { | |
633 | log_warnx("%s: wrong imsg len", __func__); | |
634 | break; | |
635 | } | |
636 | rlfa_req = imsg.data; | |
637 | rnode = rlfa_node_find(&rlfa_req->destination, | |
638 | rlfa_req->pq_address); | |
639 | if (!rnode) | |
640 | rnode = rlfa_node_new(&rlfa_req->destination, | |
641 | rlfa_req->pq_address); | |
642 | rclient = rlfa_client_find(rnode, &rlfa_req->igp); | |
643 | if (rclient) | |
644 | /* RLFA already registered - do nothing */ | |
645 | break; | |
646 | rclient = rlfa_client_new(rnode, &rlfa_req->igp); | |
647 | lde_rlfa_check(rclient); | |
648 | break; | |
649 | case IMSG_RLFA_UNREG_ALL: | |
650 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
651 | sizeof(struct zapi_rlfa_igp)) { | |
652 | log_warnx("%s: wrong imsg len", __func__); | |
653 | break; | |
654 | } | |
655 | rlfa_igp = imsg.data; | |
656 | ||
657 | RB_FOREACH_SAFE (rnode, ldp_rlfa_node_head, | |
658 | &rlfa_node_tree, rntmp) { | |
659 | rclient = rlfa_client_find(rnode, rlfa_igp); | |
660 | if (!rclient) | |
661 | continue; | |
662 | ||
663 | rlfa_client_del(rclient); | |
664 | } | |
665 | break; | |
8429abe0 | 666 | default: |
575f30ce | 667 | log_debug("%s: unexpected imsg %d", __func__, imsg.hdr.type); |
8429abe0 RW |
668 | break; |
669 | } | |
670 | imsg_free(&imsg); | |
671 | } | |
672 | if (!shut) | |
673 | imsg_event_add(iev); | |
674 | else { | |
eac6e3f0 | 675 | /* this pipe is dead, so remove the event handlers and exit */ |
e16d030c DS |
676 | EVENT_OFF(iev->ev_read); |
677 | EVENT_OFF(iev->ev_write); | |
eac6e3f0 | 678 | lde_shutdown(); |
8429abe0 RW |
679 | } |
680 | } | |
681 | ||
45a8eba9 RW |
682 | int |
683 | lde_acl_check(char *acl_name, int af, union ldpd_addr *addr, uint8_t prefixlen) | |
684 | { | |
685 | return ldp_acl_request(iev_main_sync, acl_name, af, addr, prefixlen); | |
686 | } | |
687 | ||
aff1743c KS |
688 | static bool lde_fec_connected(const struct fec_node *fn) |
689 | { | |
690 | struct fec_nh *fnh; | |
691 | ||
692 | LIST_FOREACH(fnh, &fn->nexthops, entry) | |
575f30ce | 693 | if (CHECK_FLAG(fnh->flags, F_FEC_NH_CONNECTED)) |
aff1743c KS |
694 | return true; |
695 | ||
696 | return false; | |
697 | } | |
698 | ||
699 | static bool lde_fec_outside_mpls_network(const struct fec_node *fn) | |
700 | { | |
701 | struct fec_nh *fnh; | |
702 | ||
703 | LIST_FOREACH(fnh, &fn->nexthops, entry) | |
575f30ce | 704 | if (!CHECK_FLAG(fnh->flags, F_FEC_NH_NO_LDP)) |
aff1743c KS |
705 | return false; |
706 | ||
707 | return true; | |
708 | } | |
709 | ||
8429abe0 | 710 | uint32_t |
8cb1fc45 | 711 | lde_update_label(struct fec_node *fn) |
8429abe0 | 712 | { |
8429abe0 | 713 | |
45a8eba9 | 714 | /* should we allocate a label for this fec? */ |
8cb1fc45 | 715 | switch (fn->fec.type) { |
45a8eba9 | 716 | case FEC_TYPE_IPV4: |
575f30ce | 717 | if (CHECK_FLAG(ldeconf->ipv4.flags, F_LDPD_AF_ALLOCHOSTONLY) |
12256b84 | 718 | && fn->fec.u.ipv4.prefixlen != IPV4_MAX_BITLEN) |
45a8eba9 | 719 | return (NO_LABEL); |
575f30ce | 720 | |
45a8eba9 | 721 | if (lde_acl_check(ldeconf->ipv4.acl_label_allocate_for, |
8cb1fc45 RW |
722 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, |
723 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
724 | return (NO_LABEL); |
725 | break; | |
726 | case FEC_TYPE_IPV6: | |
575f30ce | 727 | if (CHECK_FLAG(ldeconf->ipv6.flags, F_LDPD_AF_ALLOCHOSTONLY) |
13ccce6e | 728 | && fn->fec.u.ipv6.prefixlen != IPV6_MAX_BITLEN) |
45a8eba9 | 729 | return (NO_LABEL); |
575f30ce | 730 | |
45a8eba9 | 731 | if (lde_acl_check(ldeconf->ipv6.acl_label_allocate_for, |
8cb1fc45 RW |
732 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, |
733 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
734 | return (NO_LABEL); |
735 | break; | |
4a055ac2 | 736 | case FEC_TYPE_PWID: |
45a8eba9 RW |
737 | break; |
738 | } | |
739 | ||
aff1743c KS |
740 | /* |
741 | * If connected interface act as egress for fec. | |
742 | * If LDP is not configured on an interface but there | |
743 | * are other NHs with interfaces configured with LDP | |
744 | * then don't act as an egress for the fec, otherwise | |
745 | * act as an egress for the fec | |
746 | */ | |
747 | if (lde_fec_connected(fn) || lde_fec_outside_mpls_network(fn)) { | |
45a8eba9 | 748 | /* choose implicit or explicit-null depending on configuration */ |
8cb1fc45 | 749 | switch (fn->fec.type) { |
45a8eba9 | 750 | case FEC_TYPE_IPV4: |
575f30ce | 751 | if (!CHECK_FLAG(ldeconf->ipv4.flags, F_LDPD_AF_EXPNULL)) |
70e98a7f | 752 | return (MPLS_LABEL_IMPLICIT_NULL); |
575f30ce | 753 | |
45a8eba9 | 754 | if (lde_acl_check(ldeconf->ipv4.acl_label_expnull_for, |
8cb1fc45 RW |
755 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, |
756 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
70e98a7f DS |
757 | return (MPLS_LABEL_IMPLICIT_NULL); |
758 | return MPLS_LABEL_IPV4_EXPLICIT_NULL; | |
45a8eba9 | 759 | case FEC_TYPE_IPV6: |
575f30ce | 760 | if (!CHECK_FLAG(ldeconf->ipv6.flags, F_LDPD_AF_EXPNULL)) |
70e98a7f | 761 | return (MPLS_LABEL_IMPLICIT_NULL); |
575f30ce | 762 | |
45a8eba9 | 763 | if (lde_acl_check(ldeconf->ipv6.acl_label_expnull_for, |
8cb1fc45 RW |
764 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, |
765 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
70e98a7f DS |
766 | return (MPLS_LABEL_IMPLICIT_NULL); |
767 | return MPLS_LABEL_IPV6_EXPLICIT_NULL; | |
4a055ac2 | 768 | case FEC_TYPE_PWID: |
45a8eba9 RW |
769 | break; |
770 | } | |
771 | } | |
772 | ||
8cb1fc45 RW |
773 | /* preserve current label if there's no need to update it */ |
774 | if (fn->local_label != NO_LABEL && | |
775 | fn->local_label > MPLS_LABEL_RESERVED_MAX) | |
776 | return (fn->local_label); | |
777 | ||
5afba51d | 778 | return (lde_get_next_label()); |
8429abe0 RW |
779 | } |
780 | ||
781 | void | |
782 | lde_send_change_klabel(struct fec_node *fn, struct fec_nh *fnh) | |
783 | { | |
87b5f1b7 RW |
784 | struct kroute kr; |
785 | struct zapi_pw zpw; | |
8429abe0 RW |
786 | struct l2vpn_pw *pw; |
787 | ||
aff1743c KS |
788 | /* |
789 | * Ordered Control: don't program label into HW until a | |
790 | * labelmap msg has been received from upstream router | |
791 | */ | |
575f30ce | 792 | if (CHECK_FLAG(fnh->flags, F_FEC_NH_DEFER)) |
aff1743c KS |
793 | return; |
794 | ||
8429abe0 RW |
795 | switch (fn->fec.type) { |
796 | case FEC_TYPE_IPV4: | |
797 | memset(&kr, 0, sizeof(kr)); | |
798 | kr.af = AF_INET; | |
799 | kr.prefix.v4 = fn->fec.u.ipv4.prefix; | |
800 | kr.prefixlen = fn->fec.u.ipv4.prefixlen; | |
801 | kr.nexthop.v4 = fnh->nexthop.v4; | |
88d88a9c | 802 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
803 | kr.local_label = fn->local_label; |
804 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
805 | kr.route_type = fnh->route_type; |
806 | kr.route_instance = fnh->route_instance; | |
575f30ce | 807 | lde_imsg_compose_parent(IMSG_KLABEL_CHANGE, 0, &kr, sizeof(kr)); |
8429abe0 RW |
808 | break; |
809 | case FEC_TYPE_IPV6: | |
810 | memset(&kr, 0, sizeof(kr)); | |
811 | kr.af = AF_INET6; | |
812 | kr.prefix.v6 = fn->fec.u.ipv6.prefix; | |
813 | kr.prefixlen = fn->fec.u.ipv6.prefixlen; | |
814 | kr.nexthop.v6 = fnh->nexthop.v6; | |
88d88a9c | 815 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
816 | kr.local_label = fn->local_label; |
817 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
818 | kr.route_type = fnh->route_type; |
819 | kr.route_instance = fnh->route_instance; | |
8429abe0 | 820 | |
575f30ce | 821 | lde_imsg_compose_parent(IMSG_KLABEL_CHANGE, 0, &kr, sizeof(kr)); |
8429abe0 RW |
822 | break; |
823 | case FEC_TYPE_PWID: | |
3c5b5220 RW |
824 | pw = (struct l2vpn_pw *) fn->data; |
825 | if (!pw || fn->local_label == NO_LABEL || | |
8429abe0 RW |
826 | fnh->remote_label == NO_LABEL) |
827 | return; | |
828 | ||
3c5b5220 | 829 | pw->enabled = true; |
87b5f1b7 RW |
830 | pw2zpw(pw, &zpw); |
831 | zpw.local_label = fn->local_label; | |
832 | zpw.remote_label = fnh->remote_label; | |
833 | lde_imsg_compose_parent(IMSG_KPW_SET, 0, &zpw, sizeof(zpw)); | |
8429abe0 RW |
834 | break; |
835 | } | |
836 | } | |
837 | ||
838 | void | |
839 | lde_send_delete_klabel(struct fec_node *fn, struct fec_nh *fnh) | |
840 | { | |
841 | struct kroute kr; | |
87b5f1b7 | 842 | struct zapi_pw zpw; |
8429abe0 RW |
843 | struct l2vpn_pw *pw; |
844 | ||
845 | switch (fn->fec.type) { | |
846 | case FEC_TYPE_IPV4: | |
847 | memset(&kr, 0, sizeof(kr)); | |
848 | kr.af = AF_INET; | |
849 | kr.prefix.v4 = fn->fec.u.ipv4.prefix; | |
850 | kr.prefixlen = fn->fec.u.ipv4.prefixlen; | |
851 | kr.nexthop.v4 = fnh->nexthop.v4; | |
88d88a9c | 852 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
853 | kr.local_label = fn->local_label; |
854 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
855 | kr.route_type = fnh->route_type; |
856 | kr.route_instance = fnh->route_instance; | |
8429abe0 | 857 | |
575f30ce | 858 | lde_imsg_compose_parent(IMSG_KLABEL_DELETE, 0, &kr, sizeof(kr)); |
8429abe0 RW |
859 | break; |
860 | case FEC_TYPE_IPV6: | |
861 | memset(&kr, 0, sizeof(kr)); | |
862 | kr.af = AF_INET6; | |
863 | kr.prefix.v6 = fn->fec.u.ipv6.prefix; | |
864 | kr.prefixlen = fn->fec.u.ipv6.prefixlen; | |
865 | kr.nexthop.v6 = fnh->nexthop.v6; | |
88d88a9c | 866 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
867 | kr.local_label = fn->local_label; |
868 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
869 | kr.route_type = fnh->route_type; |
870 | kr.route_instance = fnh->route_instance; | |
8429abe0 | 871 | |
575f30ce | 872 | lde_imsg_compose_parent(IMSG_KLABEL_DELETE, 0, &kr, sizeof(kr)); |
8429abe0 RW |
873 | break; |
874 | case FEC_TYPE_PWID: | |
875 | pw = (struct l2vpn_pw *) fn->data; | |
3c5b5220 RW |
876 | if (!pw) |
877 | return; | |
878 | ||
879 | pw->enabled = false; | |
87b5f1b7 RW |
880 | pw2zpw(pw, &zpw); |
881 | zpw.local_label = fn->local_label; | |
882 | zpw.remote_label = fnh->remote_label; | |
883 | lde_imsg_compose_parent(IMSG_KPW_UNSET, 0, &zpw, sizeof(zpw)); | |
8429abe0 RW |
884 | break; |
885 | } | |
886 | } | |
887 | ||
077d336a RW |
888 | void |
889 | lde_fec2prefix(const struct fec *fec, struct prefix *prefix) | |
890 | { | |
891 | memset(prefix, 0, sizeof(*prefix)); | |
892 | switch (fec->type) { | |
893 | case FEC_TYPE_IPV4: | |
894 | prefix->family = AF_INET; | |
895 | prefix->u.prefix4 = fec->u.ipv4.prefix; | |
896 | prefix->prefixlen = fec->u.ipv4.prefixlen; | |
897 | break; | |
898 | case FEC_TYPE_IPV6: | |
899 | prefix->family = AF_INET6; | |
900 | prefix->u.prefix6 = fec->u.ipv6.prefix; | |
901 | prefix->prefixlen = fec->u.ipv6.prefixlen; | |
902 | break; | |
4a055ac2 | 903 | case FEC_TYPE_PWID: |
077d336a RW |
904 | prefix->family = AF_UNSPEC; |
905 | break; | |
906 | } | |
907 | } | |
908 | ||
909 | void | |
910 | lde_prefix2fec(const struct prefix *prefix, struct fec *fec) | |
911 | { | |
912 | memset(fec, 0, sizeof(*fec)); | |
913 | switch (prefix->family) { | |
914 | case AF_INET: | |
915 | fec->type = FEC_TYPE_IPV4; | |
916 | fec->u.ipv4.prefix = prefix->u.prefix4; | |
917 | fec->u.ipv4.prefixlen = prefix->prefixlen; | |
918 | break; | |
919 | case AF_INET6: | |
920 | fec->type = FEC_TYPE_IPV6; | |
921 | fec->u.ipv6.prefix = prefix->u.prefix6; | |
922 | fec->u.ipv6.prefixlen = prefix->prefixlen; | |
923 | break; | |
924 | default: | |
925 | fatalx("lde_prefix2fec: unknown af"); | |
926 | break; | |
927 | } | |
928 | } | |
929 | ||
8429abe0 RW |
930 | void |
931 | lde_fec2map(struct fec *fec, struct map *map) | |
932 | { | |
933 | memset(map, 0, sizeof(*map)); | |
934 | ||
935 | switch (fec->type) { | |
936 | case FEC_TYPE_IPV4: | |
937 | map->type = MAP_TYPE_PREFIX; | |
938 | map->fec.prefix.af = AF_INET; | |
939 | map->fec.prefix.prefix.v4 = fec->u.ipv4.prefix; | |
940 | map->fec.prefix.prefixlen = fec->u.ipv4.prefixlen; | |
941 | break; | |
942 | case FEC_TYPE_IPV6: | |
943 | map->type = MAP_TYPE_PREFIX; | |
944 | map->fec.prefix.af = AF_INET6; | |
945 | map->fec.prefix.prefix.v6 = fec->u.ipv6.prefix; | |
946 | map->fec.prefix.prefixlen = fec->u.ipv6.prefixlen; | |
947 | break; | |
948 | case FEC_TYPE_PWID: | |
949 | map->type = MAP_TYPE_PWID; | |
950 | map->fec.pwid.type = fec->u.pwid.type; | |
951 | map->fec.pwid.group_id = 0; | |
575f30ce | 952 | SET_FLAG(map->flags, F_MAP_PW_ID); |
8429abe0 RW |
953 | map->fec.pwid.pwid = fec->u.pwid.pwid; |
954 | break; | |
955 | } | |
956 | } | |
957 | ||
958 | void | |
959 | lde_map2fec(struct map *map, struct in_addr lsr_id, struct fec *fec) | |
960 | { | |
961 | memset(fec, 0, sizeof(*fec)); | |
962 | ||
963 | switch (map->type) { | |
964 | case MAP_TYPE_PREFIX: | |
965 | switch (map->fec.prefix.af) { | |
966 | case AF_INET: | |
967 | fec->type = FEC_TYPE_IPV4; | |
968 | fec->u.ipv4.prefix = map->fec.prefix.prefix.v4; | |
969 | fec->u.ipv4.prefixlen = map->fec.prefix.prefixlen; | |
970 | break; | |
971 | case AF_INET6: | |
972 | fec->type = FEC_TYPE_IPV6; | |
973 | fec->u.ipv6.prefix = map->fec.prefix.prefix.v6; | |
974 | fec->u.ipv6.prefixlen = map->fec.prefix.prefixlen; | |
975 | break; | |
976 | default: | |
977 | fatalx("lde_map2fec: unknown af"); | |
978 | break; | |
979 | } | |
980 | break; | |
981 | case MAP_TYPE_PWID: | |
982 | fec->type = FEC_TYPE_PWID; | |
983 | fec->u.pwid.type = map->fec.pwid.type; | |
984 | fec->u.pwid.pwid = map->fec.pwid.pwid; | |
985 | fec->u.pwid.lsr_id = lsr_id; | |
986 | break; | |
987 | } | |
988 | } | |
989 | ||
990 | void | |
991 | lde_send_labelmapping(struct lde_nbr *ln, struct fec_node *fn, int single) | |
992 | { | |
7c2abbd7 RW |
993 | struct lde_wdraw *lw; |
994 | struct lde_map *me; | |
995 | struct lde_req *lre; | |
996 | struct map map; | |
997 | struct l2vpn_pw *pw; | |
aff1743c KS |
998 | struct fec_nh *fnh; |
999 | bool allow = false; | |
1000 | ||
1001 | /* | |
1002 | * Ordered Control: do not send a labelmap msg until | |
1003 | * a labelmap message is received from downstream router | |
1004 | * and don't send labelmap back to downstream router | |
1005 | */ | |
575f30ce | 1006 | if (CHECK_FLAG(ldeconf->flags, F_LDPD_ORDERED_CONTROL)) { |
aff1743c | 1007 | LIST_FOREACH(fnh, &fn->nexthops, entry) { |
575f30ce | 1008 | if (CHECK_FLAG(fnh->flags, F_FEC_NH_DEFER)) |
aff1743c KS |
1009 | continue; |
1010 | ||
1011 | if (lde_address_find(ln, fnh->af, &fnh->nexthop)) | |
1012 | return; | |
1013 | allow = true; | |
1014 | break; | |
1015 | } | |
1016 | if (!allow) | |
1017 | return; | |
1018 | } | |
7c2abbd7 RW |
1019 | |
1020 | /* | |
1021 | * We shouldn't send a new label mapping if we have a pending | |
1022 | * label release to receive. In this case, schedule to send a | |
1023 | * label mapping as soon as a label release is received. | |
1024 | */ | |
1025 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, &fn->fec); | |
1026 | if (lw) { | |
b4fcca6b | 1027 | if (!fec_find(&ln->sent_map_pending, &fn->fec)) { |
3efd0893 | 1028 | debug_evt("%s: FEC %s: scheduling to send label mapping later (waiting for pending label release)", |
b4fcca6b | 1029 | __func__, log_fec(&fn->fec)); |
7c2abbd7 | 1030 | lde_map_pending_add(ln, fn); |
b4fcca6b | 1031 | } |
7c2abbd7 RW |
1032 | return; |
1033 | } | |
8429abe0 RW |
1034 | |
1035 | /* | |
1036 | * This function skips SL.1 - 3 and SL.9 - 14 because the label | |
1037 | * allocation is done way earlier (because of the merging nature of | |
1038 | * ldpd). | |
1039 | */ | |
1040 | ||
1041 | lde_fec2map(&fn->fec, &map); | |
1042 | switch (fn->fec.type) { | |
1043 | case FEC_TYPE_IPV4: | |
1044 | if (!ln->v4_enabled) | |
1045 | return; | |
575f30ce | 1046 | |
45a8eba9 RW |
1047 | if (lde_acl_check(ldeconf->ipv4.acl_label_advertise_to, |
1048 | AF_INET, (union ldpd_addr *)&ln->id, 32) != FILTER_PERMIT) | |
1049 | return; | |
575f30ce | 1050 | |
45a8eba9 RW |
1051 | if (lde_acl_check(ldeconf->ipv4.acl_label_advertise_for, |
1052 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, | |
1053 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
1054 | return; | |
8429abe0 RW |
1055 | break; |
1056 | case FEC_TYPE_IPV6: | |
1057 | if (!ln->v6_enabled) | |
1058 | return; | |
575f30ce | 1059 | |
45a8eba9 RW |
1060 | if (lde_acl_check(ldeconf->ipv6.acl_label_advertise_to, |
1061 | AF_INET, (union ldpd_addr *)&ln->id, 32) != FILTER_PERMIT) | |
1062 | return; | |
575f30ce | 1063 | |
45a8eba9 RW |
1064 | if (lde_acl_check(ldeconf->ipv6.acl_label_advertise_for, |
1065 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, | |
1066 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
1067 | return; | |
8429abe0 RW |
1068 | break; |
1069 | case FEC_TYPE_PWID: | |
1070 | pw = (struct l2vpn_pw *) fn->data; | |
1071 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1072 | /* not the remote end of the pseudowire */ | |
1073 | return; | |
1074 | ||
575f30ce | 1075 | SET_FLAG(map.flags, F_MAP_PW_IFMTU); |
8429abe0 | 1076 | map.fec.pwid.ifmtu = pw->l2vpn->mtu; |
575f30ce | 1077 | |
1078 | if (CHECK_FLAG(pw->flags, F_PW_CWORD)) | |
1079 | SET_FLAG(map.flags, F_MAP_PW_CWORD); | |
1080 | ||
1081 | if (CHECK_FLAG(pw->flags, F_PW_STATUSTLV)) { | |
1082 | SET_FLAG(map.flags, F_MAP_PW_STATUS); | |
87b5f1b7 | 1083 | map.pw_status = pw->local_status; |
8429abe0 RW |
1084 | } |
1085 | break; | |
1086 | } | |
1087 | map.label = fn->local_label; | |
1088 | ||
1089 | /* SL.6: is there a pending request for this mapping? */ | |
1090 | lre = (struct lde_req *)fec_find(&ln->recv_req, &fn->fec); | |
1091 | if (lre) { | |
1092 | /* set label request msg id in the mapping response. */ | |
1093 | map.requestid = lre->msg_id; | |
1094 | map.flags = F_MAP_REQ_ID; | |
1095 | ||
1096 | /* SL.7: delete record of pending request */ | |
1097 | lde_req_del(ln, lre, 0); | |
1098 | } | |
1099 | ||
1100 | /* SL.4: send label mapping */ | |
1101 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD, ln->peerid, 0, | |
1102 | &map, sizeof(map)); | |
1103 | if (single) | |
1104 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, | |
1105 | NULL, 0); | |
1106 | ||
1107 | /* SL.5: record sent label mapping */ | |
1108 | me = (struct lde_map *)fec_find(&ln->sent_map, &fn->fec); | |
1109 | if (me == NULL) | |
1110 | me = lde_map_add(ln, fn, 1); | |
1111 | me->map = map; | |
1112 | } | |
1113 | ||
1114 | void | |
0bcc2916 RW |
1115 | lde_send_labelwithdraw(struct lde_nbr *ln, struct fec_node *fn, |
1116 | struct map *wcard, struct status_tlv *st) | |
8429abe0 RW |
1117 | { |
1118 | struct lde_wdraw *lw; | |
1119 | struct map map; | |
1120 | struct fec *f; | |
1121 | struct l2vpn_pw *pw; | |
1122 | ||
1123 | if (fn) { | |
1124 | lde_fec2map(&fn->fec, &map); | |
1125 | switch (fn->fec.type) { | |
1126 | case FEC_TYPE_IPV4: | |
1127 | if (!ln->v4_enabled) | |
1128 | return; | |
1129 | break; | |
1130 | case FEC_TYPE_IPV6: | |
1131 | if (!ln->v6_enabled) | |
1132 | return; | |
1133 | break; | |
1134 | case FEC_TYPE_PWID: | |
1135 | pw = (struct l2vpn_pw *) fn->data; | |
1136 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1137 | /* not the remote end of the pseudowire */ | |
1138 | return; | |
1139 | ||
575f30ce | 1140 | if (CHECK_FLAG(pw->flags, F_PW_CWORD)) |
1141 | SET_FLAG(map.flags, F_MAP_PW_CWORD); | |
8429abe0 RW |
1142 | break; |
1143 | } | |
1144 | map.label = fn->local_label; | |
0bcc2916 RW |
1145 | } else |
1146 | memcpy(&map, wcard, sizeof(map)); | |
8429abe0 RW |
1147 | |
1148 | if (st) { | |
1149 | map.st.status_code = st->status_code; | |
1150 | map.st.msg_id = st->msg_id; | |
1151 | map.st.msg_type = st->msg_type; | |
575f30ce | 1152 | SET_FLAG(map.flags, F_MAP_STATUS); |
8429abe0 RW |
1153 | } |
1154 | ||
1155 | /* SWd.1: send label withdraw. */ | |
1156 | lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD, ln->peerid, 0, | |
1157 | &map, sizeof(map)); | |
1158 | lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD_END, ln->peerid, 0, NULL, 0); | |
1159 | ||
1160 | /* SWd.2: record label withdraw. */ | |
1161 | if (fn) { | |
1162 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, &fn->fec); | |
1163 | if (lw == NULL) | |
1164 | lw = lde_wdraw_add(ln, fn); | |
1165 | lw->label = map.label; | |
1166 | } else { | |
0bcc2916 RW |
1167 | struct lde_map *me; |
1168 | ||
8429abe0 RW |
1169 | RB_FOREACH(f, fec_tree, &ft) { |
1170 | fn = (struct fec_node *)f; | |
0bcc2916 RW |
1171 | me = (struct lde_map *)fec_find(&ln->sent_map, &fn->fec); |
1172 | if (lde_wildcard_apply(wcard, &fn->fec, me) == 0) | |
1173 | continue; | |
8429abe0 | 1174 | |
575f30ce | 1175 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, &fn->fec); |
8429abe0 RW |
1176 | if (lw == NULL) |
1177 | lw = lde_wdraw_add(ln, fn); | |
575f30ce | 1178 | |
8429abe0 RW |
1179 | lw->label = map.label; |
1180 | } | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | void | |
0bcc2916 | 1185 | lde_send_labelwithdraw_wcard(struct lde_nbr *ln, uint32_t label) |
8429abe0 | 1186 | { |
0bcc2916 | 1187 | struct map wcard; |
8429abe0 | 1188 | |
0bcc2916 RW |
1189 | memset(&wcard, 0, sizeof(wcard)); |
1190 | wcard.type = MAP_TYPE_WILDCARD; | |
1191 | wcard.label = label; | |
1192 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
8429abe0 RW |
1193 | } |
1194 | ||
d4afb819 RW |
1195 | void |
1196 | lde_send_labelwithdraw_twcard_prefix(struct lde_nbr *ln, uint16_t af, | |
1197 | uint32_t label) | |
1198 | { | |
1199 | struct map wcard; | |
1200 | ||
1201 | memset(&wcard, 0, sizeof(wcard)); | |
1202 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1203 | wcard.fec.twcard.type = MAP_TYPE_PREFIX; | |
1204 | wcard.fec.twcard.u.prefix_af = af; | |
1205 | wcard.label = label; | |
1206 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1207 | } | |
1208 | ||
aba50a83 RW |
1209 | void |
1210 | lde_send_labelwithdraw_twcard_pwid(struct lde_nbr *ln, uint16_t pw_type, | |
1211 | uint32_t label) | |
1212 | { | |
1213 | struct map wcard; | |
1214 | ||
1215 | memset(&wcard, 0, sizeof(wcard)); | |
1216 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1217 | wcard.fec.twcard.type = MAP_TYPE_PWID; | |
1218 | wcard.fec.twcard.u.pw_type = pw_type; | |
1219 | wcard.label = label; | |
1220 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1221 | } | |
1222 | ||
8429abe0 | 1223 | void |
0bcc2916 RW |
1224 | lde_send_labelwithdraw_pwid_wcard(struct lde_nbr *ln, uint16_t pw_type, |
1225 | uint32_t group_id) | |
1226 | { | |
1227 | struct map wcard; | |
1228 | ||
1229 | memset(&wcard, 0, sizeof(wcard)); | |
1230 | wcard.type = MAP_TYPE_PWID; | |
1231 | wcard.fec.pwid.type = pw_type; | |
1232 | wcard.fec.pwid.group_id = group_id; | |
1233 | /* we can not append a Label TLV when using PWid group wildcards. */ | |
1234 | wcard.label = NO_LABEL; | |
1235 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1236 | } | |
1237 | ||
1238 | void | |
1239 | lde_send_labelrelease(struct lde_nbr *ln, struct fec_node *fn, | |
1240 | struct map *wcard, uint32_t label) | |
8429abe0 RW |
1241 | { |
1242 | struct map map; | |
1243 | struct l2vpn_pw *pw; | |
1244 | ||
1245 | if (fn) { | |
1246 | lde_fec2map(&fn->fec, &map); | |
1247 | switch (fn->fec.type) { | |
1248 | case FEC_TYPE_IPV4: | |
1249 | if (!ln->v4_enabled) | |
1250 | return; | |
1251 | break; | |
1252 | case FEC_TYPE_IPV6: | |
1253 | if (!ln->v6_enabled) | |
1254 | return; | |
1255 | break; | |
1256 | case FEC_TYPE_PWID: | |
1257 | pw = (struct l2vpn_pw *) fn->data; | |
1258 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1259 | /* not the remote end of the pseudowire */ | |
1260 | return; | |
1261 | ||
575f30ce | 1262 | if (CHECK_FLAG(pw->flags, F_PW_CWORD)) |
1263 | SET_FLAG(map.flags, F_MAP_PW_CWORD); | |
8429abe0 RW |
1264 | break; |
1265 | } | |
0bcc2916 RW |
1266 | } else |
1267 | memcpy(&map, wcard, sizeof(map)); | |
8429abe0 RW |
1268 | map.label = label; |
1269 | ||
1270 | lde_imsg_compose_ldpe(IMSG_RELEASE_ADD, ln->peerid, 0, | |
1271 | &map, sizeof(map)); | |
1272 | lde_imsg_compose_ldpe(IMSG_RELEASE_ADD_END, ln->peerid, 0, NULL, 0); | |
1273 | } | |
1274 | ||
2d1aa1e8 | 1275 | void |
1276 | lde_send_labelrequest(struct lde_nbr *ln, struct fec_node *fn, | |
1277 | struct map *wcard, int single) | |
1278 | { | |
1279 | struct map map; | |
1280 | struct fec *f; | |
1281 | struct lde_req *lre; | |
1282 | ||
1283 | if (fn) { | |
1284 | lde_fec2map(&fn->fec, &map); | |
1285 | switch (fn->fec.type) { | |
1286 | case FEC_TYPE_IPV4: | |
1287 | if (!ln->v4_enabled) | |
1288 | return; | |
1289 | break; | |
1290 | case FEC_TYPE_IPV6: | |
1291 | if (!ln->v6_enabled) | |
1292 | return; | |
1293 | break; | |
4a055ac2 | 1294 | case FEC_TYPE_PWID: |
2d1aa1e8 | 1295 | fatalx("lde_send_labelrequest: unknown af"); |
1296 | } | |
1297 | } else | |
1298 | memcpy(&map, wcard, sizeof(map)); | |
1299 | ||
1300 | map.label = NO_LABEL; | |
1301 | ||
1302 | if (fn) { | |
1303 | /* SLR1.1: has label request for FEC been previously sent | |
1304 | * and still outstanding just return, | |
1305 | */ | |
1306 | lre = (struct lde_req *)fec_find(&ln->sent_req, &fn->fec); | |
1307 | if (lre == NULL) { | |
1308 | /* SLRq.3: send label request */ | |
1309 | lde_imsg_compose_ldpe(IMSG_REQUEST_ADD, ln->peerid, 0, | |
1310 | &map, sizeof(map)); | |
1311 | if (single) | |
1312 | lde_imsg_compose_ldpe(IMSG_REQUEST_ADD_END, | |
1313 | ln->peerid, 0, NULL, 0); | |
1314 | ||
1315 | /* SLRq.4: record sent request */ | |
1316 | lde_req_add(ln, &fn->fec, 1); | |
1317 | } | |
1318 | } else { | |
1319 | /* if Wilcard just send label request */ | |
1320 | /* SLRq.3: send label request */ | |
1321 | lde_imsg_compose_ldpe(IMSG_REQUEST_ADD, | |
1322 | ln->peerid, 0, &map, sizeof(map)); | |
1323 | if (single) | |
575f30ce | 1324 | lde_imsg_compose_ldpe(IMSG_REQUEST_ADD_END, ln->peerid, 0, NULL, 0); |
2d1aa1e8 | 1325 | |
1326 | /* SLRq.4: record sent request */ | |
1327 | RB_FOREACH(f, fec_tree, &ft) { | |
1328 | fn = (struct fec_node *)f; | |
1329 | lre = (struct lde_req *)fec_find(&ln->sent_req, &fn->fec); | |
1330 | if (lde_wildcard_apply(wcard, &fn->fec, NULL) == 0) | |
1331 | continue; | |
1332 | if (lre == NULL) | |
1333 | lde_req_add(ln, f, 1); | |
1334 | } | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | void | |
1339 | lde_send_labelrequest_wcard(struct lde_nbr *ln, uint16_t af) | |
1340 | { | |
1341 | struct map wcard; | |
1342 | ||
1343 | memset(&wcard, 0, sizeof(wcard)); | |
1344 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1345 | wcard.fec.twcard.type = MAP_TYPE_PREFIX; | |
1346 | wcard.fec.twcard.u.prefix_af = af; | |
1347 | lde_send_labelrequest(ln, NULL, &wcard, 1); | |
1348 | } | |
1349 | ||
8429abe0 | 1350 | void |
05aac414 | 1351 | lde_send_notification(struct lde_nbr *ln, uint32_t status_code, uint32_t msg_id, |
8429abe0 RW |
1352 | uint16_t msg_type) |
1353 | { | |
1354 | struct notify_msg nm; | |
1355 | ||
1356 | memset(&nm, 0, sizeof(nm)); | |
1357 | nm.status_code = status_code; | |
1358 | /* 'msg_id' and 'msg_type' should be in network byte order */ | |
1359 | nm.msg_id = msg_id; | |
1360 | nm.msg_type = msg_type; | |
1361 | ||
05aac414 | 1362 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, |
8429abe0 RW |
1363 | &nm, sizeof(nm)); |
1364 | } | |
1365 | ||
257799cd RW |
1366 | void |
1367 | lde_send_notification_eol_prefix(struct lde_nbr *ln, int af) | |
1368 | { | |
1369 | struct notify_msg nm; | |
1370 | ||
1371 | memset(&nm, 0, sizeof(nm)); | |
1372 | nm.status_code = S_ENDOFLIB; | |
1373 | nm.fec.type = MAP_TYPE_TYPED_WCARD; | |
1374 | nm.fec.fec.twcard.type = MAP_TYPE_PREFIX; | |
1375 | nm.fec.fec.twcard.u.prefix_af = af; | |
575f30ce | 1376 | SET_FLAG(nm.flags, F_NOTIF_FEC); |
257799cd RW |
1377 | |
1378 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, | |
1379 | &nm, sizeof(nm)); | |
1380 | } | |
1381 | ||
1382 | void | |
1383 | lde_send_notification_eol_pwid(struct lde_nbr *ln, uint16_t pw_type) | |
1384 | { | |
1385 | struct notify_msg nm; | |
1386 | ||
1387 | memset(&nm, 0, sizeof(nm)); | |
1388 | nm.status_code = S_ENDOFLIB; | |
1389 | nm.fec.type = MAP_TYPE_TYPED_WCARD; | |
1390 | nm.fec.fec.twcard.type = MAP_TYPE_PWID; | |
1391 | nm.fec.fec.twcard.u.pw_type = pw_type; | |
575f30ce | 1392 | SET_FLAG(nm.flags, F_NOTIF_FEC); |
257799cd RW |
1393 | |
1394 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, | |
1395 | &nm, sizeof(nm)); | |
1396 | } | |
1397 | ||
8429abe0 | 1398 | static __inline int |
45926e58 | 1399 | lde_nbr_compare(const struct lde_nbr *a, const struct lde_nbr *b) |
8429abe0 RW |
1400 | { |
1401 | return (a->peerid - b->peerid); | |
1402 | } | |
1403 | ||
1404 | static struct lde_nbr * | |
1405 | lde_nbr_new(uint32_t peerid, struct lde_nbr *new) | |
1406 | { | |
1407 | struct lde_nbr *ln; | |
1408 | ||
1409 | if ((ln = calloc(1, sizeof(*ln))) == NULL) | |
1410 | fatal(__func__); | |
1411 | ||
1412 | ln->id = new->id; | |
1413 | ln->v4_enabled = new->v4_enabled; | |
1414 | ln->v6_enabled = new->v6_enabled; | |
257799cd | 1415 | ln->flags = new->flags; |
8429abe0 RW |
1416 | ln->peerid = peerid; |
1417 | fec_init(&ln->recv_map); | |
1418 | fec_init(&ln->sent_map); | |
7c2abbd7 | 1419 | fec_init(&ln->sent_map_pending); |
8429abe0 RW |
1420 | fec_init(&ln->recv_req); |
1421 | fec_init(&ln->sent_req); | |
1422 | fec_init(&ln->sent_wdraw); | |
1423 | ||
1424 | TAILQ_INIT(&ln->addr_list); | |
1425 | ||
1426 | if (RB_INSERT(nbr_tree, &lde_nbrs, ln) != NULL) | |
1427 | fatalx("lde_nbr_new: RB_INSERT failed"); | |
1428 | ||
1429 | return (ln); | |
1430 | } | |
1431 | ||
1432 | static void | |
1433 | lde_nbr_del(struct lde_nbr *ln) | |
1434 | { | |
1435 | struct fec *f; | |
1436 | struct fec_node *fn; | |
1437 | struct fec_nh *fnh; | |
1438 | struct l2vpn_pw *pw; | |
aff1743c | 1439 | struct lde_nbr *lnbr; |
8429abe0 RW |
1440 | |
1441 | if (ln == NULL) | |
1442 | return; | |
1443 | ||
1444 | /* uninstall received mappings */ | |
1445 | RB_FOREACH(f, fec_tree, &ft) { | |
1446 | fn = (struct fec_node *)f; | |
1447 | ||
077d336a RW |
1448 | /* Update RLFA clients. */ |
1449 | lde_rlfa_update_clients(f, ln, MPLS_INVALID_LABEL); | |
1450 | ||
8429abe0 RW |
1451 | LIST_FOREACH(fnh, &fn->nexthops, entry) { |
1452 | switch (f->type) { | |
1453 | case FEC_TYPE_IPV4: | |
1454 | case FEC_TYPE_IPV6: | |
575f30ce | 1455 | if (!lde_address_find(ln, fnh->af, &fnh->nexthop)) |
8429abe0 | 1456 | continue; |
aff1743c KS |
1457 | |
1458 | /* | |
1459 | * Ordered Control: must mark any non-connected | |
1460 | * NH to wait until we receive a labelmap msg | |
1461 | * before installing in kernel and sending to | |
1462 | * peer, must do this as NHs are not removed | |
1463 | * when lsps go down. Also send label withdraw | |
1464 | * to other neighbors for all fecs from neighbor | |
1465 | * going down | |
1466 | */ | |
575f30ce | 1467 | if (CHECK_FLAG(ldeconf->flags, F_LDPD_ORDERED_CONTROL)) { |
1468 | SET_FLAG(fnh->flags, F_FEC_NH_DEFER); | |
aff1743c KS |
1469 | |
1470 | RB_FOREACH(lnbr, nbr_tree, &lde_nbrs) { | |
1471 | if (ln->peerid == lnbr->peerid) | |
1472 | continue; | |
1473 | lde_send_labelwithdraw(lnbr, fn, NULL, NULL); | |
1474 | } | |
1475 | } | |
8429abe0 RW |
1476 | break; |
1477 | case FEC_TYPE_PWID: | |
1478 | if (f->u.pwid.lsr_id.s_addr != ln->id.s_addr) | |
1479 | continue; | |
1480 | pw = (struct l2vpn_pw *) fn->data; | |
6bbdd9e9 | 1481 | if (pw) { |
1482 | pw->reason = F_PW_NO_REMOTE_LABEL; | |
8429abe0 | 1483 | l2vpn_pw_reset(pw); |
6bbdd9e9 | 1484 | } |
8429abe0 RW |
1485 | break; |
1486 | default: | |
1487 | break; | |
1488 | } | |
1489 | ||
1490 | lde_send_delete_klabel(fn, fnh); | |
1491 | fnh->remote_label = NO_LABEL; | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | lde_address_list_free(ln); | |
1496 | ||
1497 | fec_clear(&ln->recv_map, lde_map_free); | |
1498 | fec_clear(&ln->sent_map, lde_map_free); | |
7c2abbd7 | 1499 | fec_clear(&ln->sent_map_pending, free); |
8429abe0 RW |
1500 | fec_clear(&ln->recv_req, free); |
1501 | fec_clear(&ln->sent_req, free); | |
1502 | fec_clear(&ln->sent_wdraw, free); | |
1503 | ||
1504 | RB_REMOVE(nbr_tree, &lde_nbrs, ln); | |
1505 | ||
1506 | free(ln); | |
1507 | } | |
1508 | ||
1509 | static struct lde_nbr * | |
1510 | lde_nbr_find(uint32_t peerid) | |
1511 | { | |
1512 | struct lde_nbr ln; | |
1513 | ||
1514 | ln.peerid = peerid; | |
1515 | ||
1516 | return (RB_FIND(nbr_tree, &lde_nbrs, &ln)); | |
1517 | } | |
1518 | ||
1519 | struct lde_nbr * | |
1520 | lde_nbr_find_by_lsrid(struct in_addr addr) | |
1521 | { | |
1522 | struct lde_nbr *ln; | |
1523 | ||
1524 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1525 | if (ln->id.s_addr == addr.s_addr) | |
1526 | return (ln); | |
1527 | ||
1528 | return (NULL); | |
1529 | } | |
1530 | ||
1531 | struct lde_nbr * | |
1532 | lde_nbr_find_by_addr(int af, union ldpd_addr *addr) | |
1533 | { | |
1534 | struct lde_nbr *ln; | |
1535 | ||
1536 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1537 | if (lde_address_find(ln, af, addr) != NULL) | |
1538 | return (ln); | |
1539 | ||
1540 | return (NULL); | |
1541 | } | |
1542 | ||
1543 | static void | |
1544 | lde_nbr_clear(void) | |
1545 | { | |
1546 | struct lde_nbr *ln; | |
1547 | ||
55cd0f61 DS |
1548 | while (!RB_EMPTY(nbr_tree, &lde_nbrs)) { |
1549 | ln = RB_ROOT(nbr_tree, &lde_nbrs); | |
1550 | ||
8429abe0 | 1551 | lde_nbr_del(ln); |
55cd0f61 | 1552 | } |
8429abe0 RW |
1553 | } |
1554 | ||
1555 | static void | |
1556 | lde_nbr_addr_update(struct lde_nbr *ln, struct lde_addr *lde_addr, int removed) | |
1557 | { | |
1558 | struct fec *fec; | |
1559 | struct fec_node *fn; | |
1560 | struct fec_nh *fnh; | |
1561 | struct lde_map *me; | |
1562 | ||
1563 | RB_FOREACH(fec, fec_tree, &ln->recv_map) { | |
8429abe0 RW |
1564 | switch (fec->type) { |
1565 | case FEC_TYPE_IPV4: | |
1566 | if (lde_addr->af != AF_INET) | |
1567 | continue; | |
1568 | break; | |
1569 | case FEC_TYPE_IPV6: | |
1570 | if (lde_addr->af != AF_INET6) | |
1571 | continue; | |
1572 | break; | |
4a055ac2 | 1573 | case FEC_TYPE_PWID: |
8429abe0 RW |
1574 | continue; |
1575 | } | |
1576 | ||
1e4c8673 RW |
1577 | fn = (struct fec_node *)fec_find(&ft, fec); |
1578 | if (fn == NULL) | |
1579 | /* shouldn't happen */ | |
1580 | continue; | |
1581 | ||
8429abe0 | 1582 | LIST_FOREACH(fnh, &fn->nexthops, entry) { |
575f30ce | 1583 | if (ldp_addrcmp(fnh->af, &fnh->nexthop, &lde_addr->addr)) |
8429abe0 RW |
1584 | continue; |
1585 | ||
1586 | if (removed) { | |
1587 | lde_send_delete_klabel(fn, fnh); | |
1588 | fnh->remote_label = NO_LABEL; | |
1589 | } else { | |
1590 | me = (struct lde_map *)fec; | |
1591 | fnh->remote_label = me->map.label; | |
1592 | lde_send_change_klabel(fn, fnh); | |
1593 | } | |
1594 | break; | |
1595 | } | |
1596 | } | |
1597 | } | |
1598 | ||
ff5279ba | 1599 | void |
1600 | lde_allow_broken_lsp_update(int new_config) | |
1601 | { | |
1602 | struct fec_node *fn; | |
1603 | struct fec_nh *fnh; | |
1604 | struct fec *f; | |
1605 | ||
1606 | RB_FOREACH(f, fec_tree, &ft) { | |
1607 | fn = (struct fec_node *)f; | |
1608 | ||
1609 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
1610 | /* allow-broken-lsp config is changing so | |
1611 | * we need to reprogram labeled routes to | |
1612 | * have proper top-level label | |
1613 | */ | |
1614 | if (!(new_config & F_LDPD_ALLOW_BROKEN_LSP)) | |
1615 | lde_send_delete_klabel(fn, fnh); | |
1616 | ||
1617 | if (fn->local_label != NO_LABEL) | |
1618 | lde_send_change_klabel(fn, fnh); | |
1619 | } | |
1620 | } | |
1621 | } | |
1622 | ||
d3e1887a | 1623 | static __inline int |
45926e58 | 1624 | lde_map_compare(const struct lde_map *a, const struct lde_map *b) |
d3e1887a RW |
1625 | { |
1626 | return (ldp_addrcmp(AF_INET, (union ldpd_addr *)&a->nexthop->id, | |
1627 | (union ldpd_addr *)&b->nexthop->id)); | |
1628 | } | |
1629 | ||
8429abe0 RW |
1630 | struct lde_map * |
1631 | lde_map_add(struct lde_nbr *ln, struct fec_node *fn, int sent) | |
1632 | { | |
1633 | struct lde_map *me; | |
1634 | ||
1635 | me = calloc(1, sizeof(*me)); | |
1636 | if (me == NULL) | |
1637 | fatal(__func__); | |
1638 | ||
1639 | me->fec = fn->fec; | |
1640 | me->nexthop = ln; | |
1641 | ||
1642 | if (sent) { | |
d3e1887a RW |
1643 | RB_INSERT(lde_map_head, &fn->upstream, me); |
1644 | me->head = &fn->upstream; | |
8429abe0 | 1645 | if (fec_insert(&ln->sent_map, &me->fec)) |
575f30ce | 1646 | log_warnx("failed to add %s to sent map", log_fec(&me->fec)); |
8429abe0 RW |
1647 | /* XXX on failure more cleanup is needed */ |
1648 | } else { | |
d3e1887a RW |
1649 | RB_INSERT(lde_map_head, &fn->downstream, me); |
1650 | me->head = &fn->downstream; | |
8429abe0 | 1651 | if (fec_insert(&ln->recv_map, &me->fec)) |
575f30ce | 1652 | log_warnx("failed to add %s to recv map", log_fec(&me->fec)); |
8429abe0 RW |
1653 | } |
1654 | ||
1655 | return (me); | |
1656 | } | |
1657 | ||
1658 | void | |
1659 | lde_map_del(struct lde_nbr *ln, struct lde_map *me, int sent) | |
1660 | { | |
1661 | if (sent) | |
1662 | fec_remove(&ln->sent_map, &me->fec); | |
1663 | else | |
1664 | fec_remove(&ln->recv_map, &me->fec); | |
1665 | ||
1666 | lde_map_free(me); | |
1667 | } | |
1668 | ||
1669 | static void | |
1670 | lde_map_free(void *ptr) | |
1671 | { | |
1672 | struct lde_map *map = ptr; | |
1673 | ||
d3e1887a | 1674 | RB_REMOVE(lde_map_head, map->head, map); |
8429abe0 RW |
1675 | free(map); |
1676 | } | |
1677 | ||
7c2abbd7 RW |
1678 | struct fec * |
1679 | lde_map_pending_add(struct lde_nbr *ln, struct fec_node *fn) | |
1680 | { | |
1681 | struct fec *map; | |
1682 | ||
1683 | map = calloc(1, sizeof(*map)); | |
1684 | if (map == NULL) | |
1685 | fatal(__func__); | |
1686 | ||
1687 | *map = fn->fec; | |
1688 | if (fec_insert(&ln->sent_map_pending, map)) | |
575f30ce | 1689 | log_warnx("failed to add %s to sent map (pending)", log_fec(map)); |
7c2abbd7 RW |
1690 | |
1691 | return (map); | |
1692 | } | |
1693 | ||
1694 | void | |
1695 | lde_map_pending_del(struct lde_nbr *ln, struct fec *map) | |
1696 | { | |
1697 | fec_remove(&ln->sent_map_pending, map); | |
1698 | free(map); | |
1699 | } | |
1700 | ||
8429abe0 RW |
1701 | struct lde_req * |
1702 | lde_req_add(struct lde_nbr *ln, struct fec *fec, int sent) | |
1703 | { | |
1704 | struct fec_tree *t; | |
1705 | struct lde_req *lre; | |
1706 | ||
1707 | t = sent ? &ln->sent_req : &ln->recv_req; | |
1708 | ||
1709 | lre = calloc(1, sizeof(*lre)); | |
1710 | if (lre != NULL) { | |
1711 | lre->fec = *fec; | |
1712 | ||
1713 | if (fec_insert(t, &lre->fec)) { | |
1714 | log_warnx("failed to add %s to %s req", | |
1715 | log_fec(&lre->fec), sent ? "sent" : "recv"); | |
1716 | free(lre); | |
1717 | return (NULL); | |
1718 | } | |
1719 | } | |
1720 | ||
1721 | return (lre); | |
1722 | } | |
1723 | ||
1724 | void | |
1725 | lde_req_del(struct lde_nbr *ln, struct lde_req *lre, int sent) | |
1726 | { | |
1727 | if (sent) | |
1728 | fec_remove(&ln->sent_req, &lre->fec); | |
1729 | else | |
1730 | fec_remove(&ln->recv_req, &lre->fec); | |
1731 | ||
1732 | free(lre); | |
1733 | } | |
1734 | ||
1735 | struct lde_wdraw * | |
1736 | lde_wdraw_add(struct lde_nbr *ln, struct fec_node *fn) | |
1737 | { | |
1738 | struct lde_wdraw *lw; | |
1739 | ||
1740 | lw = calloc(1, sizeof(*lw)); | |
1741 | if (lw == NULL) | |
1742 | fatal(__func__); | |
1743 | ||
1744 | lw->fec = fn->fec; | |
1745 | ||
1746 | if (fec_insert(&ln->sent_wdraw, &lw->fec)) | |
575f30ce | 1747 | log_warnx("failed to add %s to sent wdraw", log_fec(&lw->fec)); |
8429abe0 RW |
1748 | |
1749 | return (lw); | |
1750 | } | |
1751 | ||
1752 | void | |
1753 | lde_wdraw_del(struct lde_nbr *ln, struct lde_wdraw *lw) | |
1754 | { | |
1755 | fec_remove(&ln->sent_wdraw, &lw->fec); | |
1756 | free(lw); | |
1757 | } | |
1758 | ||
1759 | void | |
45a8eba9 | 1760 | lde_change_egress_label(int af) |
8429abe0 RW |
1761 | { |
1762 | struct lde_nbr *ln; | |
1763 | struct fec *f; | |
1764 | struct fec_node *fn; | |
1765 | ||
be54d744 | 1766 | /* explicitly withdraw all null labels */ |
8429abe0 | 1767 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) { |
70e98a7f | 1768 | lde_send_labelwithdraw_wcard(ln, MPLS_LABEL_IMPLICIT_NULL); |
45a8eba9 | 1769 | if (ln->v4_enabled) |
575f30ce | 1770 | lde_send_labelwithdraw_wcard(ln, MPLS_LABEL_IPV4_EXPLICIT_NULL); |
45a8eba9 | 1771 | if (ln->v6_enabled) |
575f30ce | 1772 | lde_send_labelwithdraw_wcard(ln, MPLS_LABEL_IPV6_EXPLICIT_NULL); |
be54d744 | 1773 | } |
8429abe0 | 1774 | |
be54d744 RW |
1775 | /* update label of connected routes */ |
1776 | RB_FOREACH(f, fec_tree, &ft) { | |
1777 | fn = (struct fec_node *)f; | |
1778 | if (fn->local_label > MPLS_LABEL_RESERVED_MAX) | |
1779 | continue; | |
8429abe0 | 1780 | |
be54d744 RW |
1781 | switch (af) { |
1782 | case AF_INET: | |
1783 | if (fn->fec.type != FEC_TYPE_IPV4) | |
1784 | continue; | |
1785 | break; | |
1786 | case AF_INET6: | |
1787 | if (fn->fec.type != FEC_TYPE_IPV6) | |
1788 | continue; | |
1789 | break; | |
1790 | default: | |
1791 | fatalx("lde_change_egress_label: unknown af"); | |
8429abe0 RW |
1792 | } |
1793 | ||
8cb1fc45 | 1794 | fn->local_label = lde_update_label(fn); |
45a8eba9 RW |
1795 | if (fn->local_label != NO_LABEL) |
1796 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1797 | lde_send_labelmapping(ln, fn, 0); | |
be54d744 RW |
1798 | } |
1799 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
575f30ce | 1800 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, NULL, 0); |
8429abe0 RW |
1801 | } |
1802 | ||
86753560 | 1803 | void |
2d1aa1e8 | 1804 | lde_change_allocate_filter(int af) |
86753560 | 1805 | { |
1806 | struct lde_nbr *ln; | |
1807 | struct fec *f; | |
1808 | struct fec_node *fn; | |
1809 | uint32_t new_label; | |
1810 | ||
2d1aa1e8 | 1811 | /* reallocate labels for fecs that match this filter */ |
86753560 | 1812 | RB_FOREACH(f, fec_tree, &ft) { |
1813 | fn = (struct fec_node *)f; | |
1814 | ||
1815 | switch (af) { | |
1816 | case AF_INET: | |
1817 | if (fn->fec.type != FEC_TYPE_IPV4) | |
1818 | continue; | |
1819 | break; | |
1820 | case AF_INET6: | |
1821 | if (fn->fec.type != FEC_TYPE_IPV6) | |
1822 | continue; | |
1823 | break; | |
1824 | default: | |
2d1aa1e8 | 1825 | fatalx("lde_change_allocate_filter: unknown af"); |
86753560 | 1826 | } |
1827 | ||
1828 | /* | |
1829 | * If the local label has changed to NO_LABEL, send a label | |
1830 | * withdraw to all peers. | |
1831 | * If the local label has changed and it's different from | |
1832 | * NO_LABEL, send a label mapping to all peers advertising | |
1833 | * the new label. | |
1834 | * If the local label hasn't changed, do nothing | |
1835 | */ | |
1836 | new_label = lde_update_label(fn); | |
1837 | if (fn->local_label != new_label) { | |
1838 | if (new_label == NO_LABEL) | |
1839 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
575f30ce | 1840 | lde_send_labelwithdraw(ln, fn, NULL, NULL); |
86753560 | 1841 | |
1842 | fn->local_label = new_label; | |
1843 | if (fn->local_label != NO_LABEL) | |
1844 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1845 | lde_send_labelmapping(ln, fn, 0); | |
1846 | } | |
1847 | } | |
575f30ce | 1848 | |
86753560 | 1849 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) |
1850 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, | |
1851 | NULL, 0); | |
1852 | } | |
1853 | ||
2d1aa1e8 | 1854 | void |
1855 | lde_change_advertise_filter(int af) | |
1856 | { | |
1857 | struct lde_nbr *ln; | |
1858 | struct fec *f; | |
1859 | struct fec_node *fn; | |
1860 | char *acl_to_filter; | |
1861 | char *acl_for_filter; | |
1862 | union ldpd_addr *prefix; | |
1863 | uint8_t plen; | |
1864 | struct lde_map *me; | |
1865 | ||
1866 | /* advertise label for fecs to neighbors if matches advertise filters */ | |
1867 | switch (af) { | |
1868 | case AF_INET: | |
1869 | acl_to_filter = ldeconf->ipv4.acl_label_advertise_to; | |
1870 | acl_for_filter = ldeconf->ipv4.acl_label_advertise_for; | |
1871 | break; | |
1872 | case AF_INET6: | |
1873 | acl_to_filter = ldeconf->ipv6.acl_label_advertise_to; | |
1874 | acl_for_filter = ldeconf->ipv6.acl_label_advertise_for; | |
1875 | break; | |
1876 | default: | |
1877 | fatalx("lde_change_advertise_filter: unknown af"); | |
1878 | } | |
1879 | ||
1880 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) { | |
1881 | if (lde_acl_check(acl_to_filter, af, (union ldpd_addr *)&ln->id, | |
1882 | IPV4_MAX_BITLEN) != FILTER_PERMIT) | |
1883 | lde_send_labelwithdraw_wcard(ln, NO_LABEL); | |
1884 | else { | |
1885 | /* This neighbor is allowed in to_filter, so | |
1886 | * send labels if fec also matches for_filter | |
1887 | */ | |
1888 | RB_FOREACH(f, fec_tree, &ft) { | |
1889 | fn = (struct fec_node *)f; | |
1890 | switch (af) { | |
1891 | case AF_INET: | |
1892 | if (fn->fec.type != FEC_TYPE_IPV4) | |
1893 | continue; | |
575f30ce | 1894 | prefix = (union ldpd_addr *)&fn->fec.u.ipv4.prefix; |
2d1aa1e8 | 1895 | plen = fn->fec.u.ipv4.prefixlen; |
1896 | break; | |
1897 | case FEC_TYPE_IPV6: | |
1898 | if (fn->fec.type != FEC_TYPE_IPV6) | |
1899 | continue; | |
575f30ce | 1900 | prefix = (union ldpd_addr *)&fn->fec.u.ipv6.prefix; |
2d1aa1e8 | 1901 | plen = fn->fec.u.ipv6.prefixlen; |
1902 | break; | |
1903 | default: | |
1904 | continue; | |
1905 | } | |
575f30ce | 1906 | |
2d1aa1e8 | 1907 | if (lde_acl_check(acl_for_filter, af, |
1908 | prefix, plen) != FILTER_PERMIT) { | |
575f30ce | 1909 | me = (struct lde_map *)fec_find(&ln->sent_map, &fn->fec); |
2d1aa1e8 | 1910 | if (me) |
1911 | /* fec filtered withdraw */ | |
575f30ce | 1912 | lde_send_labelwithdraw(ln, fn, NULL, NULL); |
2d1aa1e8 | 1913 | } else |
1914 | /* fec allowed send map */ | |
1915 | lde_send_labelmapping(ln, fn, 0); | |
1916 | } | |
575f30ce | 1917 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, NULL, 0); |
2d1aa1e8 | 1918 | } |
1919 | } | |
1920 | } | |
1921 | ||
1922 | ||
1923 | void | |
1924 | lde_change_accept_filter(int af) | |
1925 | { | |
1926 | struct lde_nbr *ln; | |
1927 | struct fec *f; | |
1928 | struct fec_node *fn; | |
1929 | char *acl_for_filter; | |
1930 | char *acl_from_filter; | |
1931 | union ldpd_addr *prefix; | |
1932 | uint8_t plen; | |
1933 | struct lde_map *me; | |
1934 | enum fec_type type; | |
1935 | ||
1936 | /* accept labels from neighbors specified in the from_filter and for | |
1937 | * fecs defined in the for_filter | |
1938 | */ | |
1939 | switch (af) { | |
1940 | case AF_INET: | |
1941 | acl_for_filter = ldeconf->ipv4.acl_label_accept_for; | |
1942 | acl_from_filter = ldeconf->ipv4.acl_label_accept_from; | |
1943 | type = FEC_TYPE_IPV4; | |
1944 | break; | |
1945 | case AF_INET6: | |
1946 | acl_for_filter = ldeconf->ipv6.acl_label_accept_for; | |
1947 | acl_from_filter = ldeconf->ipv6.acl_label_accept_from; | |
1948 | type = FEC_TYPE_IPV6; | |
1949 | break; | |
1950 | default: | |
1951 | fatalx("lde_change_accept_filter: unknown af"); | |
1952 | } | |
1953 | ||
1954 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) { | |
1955 | if (lde_acl_check(acl_from_filter, AF_INET, (union ldpd_addr *) | |
1956 | &ln->id, IPV4_MAX_BITLEN) != FILTER_PERMIT) { | |
1957 | /* This neighbor is now filtered so remove fecs from | |
1958 | * recv list | |
1959 | */ | |
1960 | RB_FOREACH(f, fec_tree, &ft) { | |
1961 | fn = (struct fec_node *)f; | |
1962 | if (fn->fec.type == type) { | |
575f30ce | 1963 | me = (struct lde_map *)fec_find(&ln->recv_map, &fn->fec); |
2d1aa1e8 | 1964 | if (me) |
1965 | lde_map_del(ln, me, 0); | |
1966 | } | |
1967 | } | |
575f30ce | 1968 | } else if (CHECK_FLAG(ln->flags, F_NBR_CAP_TWCARD)) { |
2d1aa1e8 | 1969 | /* This neighbor is allowed and supports type |
1970 | * wildcard so send a labelrequest | |
1971 | * to get any new labels from neighbor | |
1972 | * and make sure any fecs we currently have | |
1973 | * match for_filter. | |
1974 | */ | |
1975 | RB_FOREACH(f, fec_tree, &ft) { | |
1976 | fn = (struct fec_node *)f; | |
1977 | switch (af) { | |
1978 | case AF_INET: | |
1979 | if (fn->fec.type != FEC_TYPE_IPV4) | |
1980 | continue; | |
575f30ce | 1981 | prefix = (union ldpd_addr *)&fn->fec.u.ipv4.prefix; |
2d1aa1e8 | 1982 | plen = fn->fec.u.ipv4.prefixlen; |
1983 | break; | |
1984 | case AF_INET6: | |
1985 | if (fn->fec.type != FEC_TYPE_IPV6) | |
1986 | continue; | |
575f30ce | 1987 | prefix = (union ldpd_addr *)&fn->fec.u.ipv6.prefix; |
2d1aa1e8 | 1988 | plen = fn->fec.u.ipv6.prefixlen; |
1989 | break; | |
1990 | default: | |
1991 | continue; | |
1992 | } | |
1993 | if (lde_acl_check(acl_for_filter, af, | |
1994 | prefix, plen) != FILTER_PERMIT) { | |
575f30ce | 1995 | me = (struct lde_map *)fec_find(&ln->recv_map, &fn->fec); |
2d1aa1e8 | 1996 | if (me) |
1997 | lde_map_del(ln, me, 0); | |
1998 | } | |
1999 | } | |
2000 | lde_send_labelrequest_wcard(ln, af); | |
2001 | } else | |
2002 | /* Type Wildcard is not supported so restart session */ | |
575f30ce | 2003 | lde_imsg_compose_ldpe(IMSG_NBR_SHUTDOWN, ln->peerid, 0, NULL, 0); |
2d1aa1e8 | 2004 | } |
2005 | } | |
2006 | ||
2007 | void | |
2008 | lde_change_expnull_for_filter(int af) | |
2009 | { | |
2010 | struct lde_nbr *ln; | |
2011 | struct fec *f; | |
2012 | struct fec_node *fn; | |
2013 | char *acl_name; | |
2014 | uint32_t exp_label; | |
2015 | union ldpd_addr *prefix; | |
2016 | uint8_t plen; | |
2017 | ||
2018 | /* Configure explicit-null advertisement for all fecs in this filter */ | |
2019 | RB_FOREACH(f, fec_tree, &ft) { | |
2020 | fn = (struct fec_node *)f; | |
2021 | ||
2022 | switch (af) { | |
2023 | case AF_INET: | |
2024 | if (fn->fec.type != FEC_TYPE_IPV4) | |
2025 | continue; | |
2026 | acl_name = ldeconf->ipv4.acl_label_expnull_for; | |
2027 | prefix = (union ldpd_addr *)&fn->fec.u.ipv4.prefix; | |
2028 | plen = fn->fec.u.ipv4.prefixlen; | |
2029 | exp_label = MPLS_LABEL_IPV4_EXPLICIT_NULL; | |
2030 | break; | |
2031 | case AF_INET6: | |
2032 | if (fn->fec.type != FEC_TYPE_IPV6) | |
2033 | continue; | |
2034 | acl_name = ldeconf->ipv6.acl_label_expnull_for; | |
2035 | prefix = (union ldpd_addr *)&fn->fec.u.ipv6.prefix; | |
2036 | plen = fn->fec.u.ipv6.prefixlen; | |
2037 | exp_label = MPLS_LABEL_IPV6_EXPLICIT_NULL; | |
2038 | break; | |
2039 | default: | |
2040 | fatalx("lde_change_expnull_for_filter: unknown af"); | |
2041 | } | |
2042 | ||
2043 | if (lde_acl_check(acl_name, af, prefix, plen) == FILTER_PERMIT) { | |
2044 | /* for this fec change any imp-null to exp-null */ | |
2045 | if (fn->local_label == MPLS_LABEL_IMPLICIT_NULL) { | |
2046 | fn->local_label= lde_update_label(fn); | |
2047 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2048 | lde_send_labelmapping(ln, fn, 0); | |
2049 | } | |
2050 | } else { | |
2051 | /* for this fec change any exp-null back to imp-null */ | |
2052 | if (fn->local_label == exp_label) { | |
2053 | fn->local_label = lde_update_label(fn); | |
2054 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2055 | lde_send_labelmapping(ln, fn, 0); | |
2056 | } | |
2057 | } | |
2058 | } | |
2059 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2060 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, | |
2061 | NULL, 0); | |
2062 | } | |
2063 | ||
8429abe0 RW |
2064 | static int |
2065 | lde_address_add(struct lde_nbr *ln, struct lde_addr *lde_addr) | |
2066 | { | |
2067 | struct lde_addr *new; | |
2068 | ||
2069 | if (lde_address_find(ln, lde_addr->af, &lde_addr->addr) != NULL) | |
2070 | return (-1); | |
2071 | ||
2072 | if ((new = calloc(1, sizeof(*new))) == NULL) | |
2073 | fatal(__func__); | |
2074 | ||
2075 | new->af = lde_addr->af; | |
2076 | new->addr = lde_addr->addr; | |
2077 | TAILQ_INSERT_TAIL(&ln->addr_list, new, entry); | |
2078 | ||
2079 | /* reevaluate the previously received mappings from this neighbor */ | |
2080 | lde_nbr_addr_update(ln, lde_addr, 0); | |
2081 | ||
2082 | return (0); | |
2083 | } | |
2084 | ||
2085 | static int | |
2086 | lde_address_del(struct lde_nbr *ln, struct lde_addr *lde_addr) | |
2087 | { | |
2088 | lde_addr = lde_address_find(ln, lde_addr->af, &lde_addr->addr); | |
2089 | if (lde_addr == NULL) | |
2090 | return (-1); | |
2091 | ||
2092 | /* reevaluate the previously received mappings from this neighbor */ | |
2093 | lde_nbr_addr_update(ln, lde_addr, 1); | |
2094 | ||
2095 | TAILQ_REMOVE(&ln->addr_list, lde_addr, entry); | |
2096 | free(lde_addr); | |
2097 | ||
2098 | return (0); | |
2099 | } | |
2100 | ||
2101 | struct lde_addr * | |
2102 | lde_address_find(struct lde_nbr *ln, int af, union ldpd_addr *addr) | |
2103 | { | |
2104 | struct lde_addr *lde_addr; | |
2105 | ||
2106 | TAILQ_FOREACH(lde_addr, &ln->addr_list, entry) | |
2107 | if (lde_addr->af == af && | |
2108 | ldp_addrcmp(af, &lde_addr->addr, addr) == 0) | |
2109 | return (lde_addr); | |
2110 | ||
2111 | return (NULL); | |
2112 | } | |
2113 | ||
2114 | static void | |
2115 | lde_address_list_free(struct lde_nbr *ln) | |
2116 | { | |
2117 | struct lde_addr *lde_addr; | |
2118 | ||
a43ad4fe | 2119 | while ((lde_addr = TAILQ_POP_FIRST(&ln->addr_list, entry)) != NULL) |
8429abe0 | 2120 | free(lde_addr); |
8429abe0 | 2121 | } |
fea12efb | 2122 | |
9d694b0b MS |
2123 | /* |
2124 | * Event callback used to retry the label-manager sync zapi session. | |
2125 | */ | |
e6685141 | 2126 | static void zclient_sync_retry(struct event *thread) |
9d694b0b MS |
2127 | { |
2128 | zclient_sync_init(); | |
9d694b0b MS |
2129 | } |
2130 | ||
2131 | /* | |
2132 | * Initialize and open a synchronous zapi session. This is used by label chunk | |
2133 | * management code, which acquires and releases blocks of labels from the | |
2134 | * zebra label-manager module. | |
2135 | */ | |
2136 | static void zclient_sync_init(void) | |
5afba51d | 2137 | { |
17da84a4 | 2138 | struct zclient_options options = zclient_options_default; |
9d694b0b | 2139 | |
17da84a4 KS |
2140 | options.synchronous = true; |
2141 | ||
5afba51d | 2142 | /* Initialize special zclient for synchronous message exchanges. */ |
a243d1db | 2143 | zclient_sync = zclient_new(master, &options, NULL, 0); |
5afba51d RW |
2144 | zclient_sync->sock = -1; |
2145 | zclient_sync->redist_default = ZEBRA_ROUTE_LDP; | |
4cebdb9b | 2146 | zclient_sync->session_id = 1; /* Distinguish from main session */ |
342213ea DS |
2147 | zclient_sync->privs = &lde_privs; |
2148 | ||
9d694b0b | 2149 | if (zclient_socket_connect(zclient_sync) < 0) { |
5afba51d | 2150 | log_warnx("Error connecting synchronous zclient!"); |
9d694b0b | 2151 | goto retry; |
5afba51d | 2152 | } |
fa84d193 DL |
2153 | /* make socket non-blocking */ |
2154 | sock_set_nonblock(zclient_sync->sock); | |
5afba51d | 2155 | |
17da84a4 | 2156 | /* Send hello to notify zebra this is a synchronous client */ |
7cfdb485 | 2157 | if (zclient_send_hello(zclient_sync) == ZCLIENT_SEND_FAILURE) { |
17da84a4 | 2158 | log_warnx("Error sending hello for synchronous zclient!"); |
9d694b0b | 2159 | goto retry; |
17da84a4 KS |
2160 | } |
2161 | ||
5afba51d | 2162 | /* Connect to label manager */ |
9d694b0b | 2163 | if (lm_label_manager_connect(zclient_sync, 0) != 0) { |
5afba51d | 2164 | log_warnx("Error connecting to label manager!"); |
9d694b0b | 2165 | goto retry; |
5afba51d | 2166 | } |
9d694b0b MS |
2167 | |
2168 | /* Finish label-manager init once the LM session is running */ | |
2169 | lde_label_list_init(); | |
2170 | ||
2171 | return; | |
2172 | ||
2173 | retry: | |
2174 | ||
2175 | /* Discard failed zclient object */ | |
2176 | zclient_stop(zclient_sync); | |
2177 | zclient_free(zclient_sync); | |
2178 | zclient_sync = NULL; | |
2179 | ||
2180 | /* Retry using a timer */ | |
907a2395 | 2181 | event_add_timer(master, zclient_sync_retry, NULL, 1, NULL); |
5afba51d RW |
2182 | } |
2183 | ||
fea12efb | 2184 | static void |
2185 | lde_del_label_chunk(void *val) | |
2186 | { | |
2187 | free(val); | |
2188 | } | |
5afba51d | 2189 | |
f4ec681c BA |
2190 | static int |
2191 | lde_release_label_chunk(uint32_t start, uint32_t end) | |
2192 | { | |
2193 | int ret; | |
2194 | ||
2195 | ret = lm_release_label_chunk(zclient_sync, start, end); | |
2196 | if (ret < 0) { | |
2197 | log_warnx("Error releasing label chunk!"); | |
2198 | return (-1); | |
2199 | } | |
2200 | return (0); | |
2201 | } | |
2202 | ||
fea12efb | 2203 | static int |
2204 | lde_get_label_chunk(void) | |
2205 | { | |
5afba51d RW |
2206 | int ret; |
2207 | uint32_t start, end; | |
fea12efb | 2208 | |
08e4b244 | 2209 | debug_labels("getting label chunk (size %u)", CHUNK_SIZE); |
0e3b6a92 EDP |
2210 | ret = lm_get_label_chunk(zclient_sync, 0, MPLS_LABEL_BASE_ANY, |
2211 | CHUNK_SIZE, &start, &end); | |
5afba51d | 2212 | if (ret < 0) { |
fea12efb | 2213 | log_warnx("Error getting label chunk!"); |
fea12efb | 2214 | return -1; |
2215 | } | |
2216 | ||
2217 | on_get_label_chunk_response(start, end); | |
2218 | ||
5afba51d | 2219 | return (0); |
fea12efb | 2220 | } |
5afba51d | 2221 | |
fea12efb | 2222 | static void |
2223 | lde_label_list_init(void) | |
2224 | { | |
2225 | label_chunk_list = list_new(); | |
2226 | label_chunk_list->del = lde_del_label_chunk; | |
2227 | ||
2228 | /* get first chunk */ | |
73be9aeb | 2229 | while (lde_get_label_chunk () != 0) { |
f2232fdf | 2230 | log_warnx("Error getting first label chunk!"); |
d1fcf957 | 2231 | sleep(1); |
fea12efb | 2232 | } |
2233 | } | |
2234 | ||
2235 | static void | |
2236 | on_get_label_chunk_response(uint32_t start, uint32_t end) | |
2237 | { | |
2238 | struct label_chunk *new_label_chunk; | |
2239 | ||
08e4b244 | 2240 | debug_labels("label chunk assign: %u - %u", start, end); |
fea12efb | 2241 | |
2242 | new_label_chunk = calloc(1, sizeof(struct label_chunk)); | |
66749b59 | 2243 | if (!new_label_chunk) { |
2244 | log_warn("Error trying to allocate label chunk %u - %u", start, end); | |
2245 | return; | |
2246 | } | |
fea12efb | 2247 | |
2248 | new_label_chunk->start = start; | |
2249 | new_label_chunk->end = end; | |
2250 | new_label_chunk->used_mask = 0; | |
2251 | ||
2252 | listnode_add(label_chunk_list, (void *)new_label_chunk); | |
2253 | ||
2254 | /* let's update current if needed */ | |
2255 | if (!current_label_chunk) | |
2256 | current_label_chunk = listtail(label_chunk_list); | |
2257 | } | |
2258 | ||
f4ec681c BA |
2259 | void |
2260 | lde_free_label(uint32_t label) | |
2261 | { | |
2262 | struct listnode *node; | |
2263 | struct label_chunk *label_chunk; | |
2264 | uint64_t pos; | |
2265 | ||
2266 | for (ALL_LIST_ELEMENTS_RO(label_chunk_list, node, label_chunk)) { | |
2267 | if (label <= label_chunk->end && label >= label_chunk->start) { | |
2268 | pos = 1ULL << (label - label_chunk->start); | |
575f30ce | 2269 | UNSET_FLAG(label_chunk->used_mask, pos); |
f4ec681c BA |
2270 | /* if nobody is using this chunk and it's not current_label_chunk, then free it */ |
2271 | if (!label_chunk->used_mask && (current_label_chunk != node)) { | |
2272 | if (lde_release_label_chunk(label_chunk->start, label_chunk->end) != 0) | |
2273 | log_warnx("%s: Error releasing label chunk!", __func__); | |
2274 | else { | |
2275 | listnode_delete(label_chunk_list, label_chunk); | |
2276 | lde_del_label_chunk(label_chunk); | |
2277 | } | |
2278 | } | |
2279 | break; | |
2280 | } | |
2281 | } | |
575f30ce | 2282 | |
f4ec681c BA |
2283 | return; |
2284 | } | |
2285 | ||
fea12efb | 2286 | static uint32_t |
2287 | lde_get_next_label(void) | |
2288 | { | |
5afba51d | 2289 | struct label_chunk *label_chunk; |
2a178cdd RW |
2290 | uint32_t i, size; |
2291 | uint64_t pos; | |
5afba51d | 2292 | uint32_t label = NO_LABEL; |
fea12efb | 2293 | |
2294 | while (current_label_chunk) { | |
2295 | label_chunk = listgetdata(current_label_chunk); | |
2296 | if (!label_chunk) | |
2297 | goto end; | |
2298 | ||
2299 | /* try to get next free label in currently used label chunk */ | |
2300 | size = label_chunk->end - label_chunk->start + 1; | |
2301 | for (i = 0, pos = 1; i < size; i++, pos <<= 1) { | |
2302 | if (!(pos & label_chunk->used_mask)) { | |
575f30ce | 2303 | SET_FLAG(label_chunk->used_mask, pos); |
fea12efb | 2304 | label = label_chunk->start + i; |
2305 | goto end; | |
2306 | } | |
2307 | } | |
2308 | current_label_chunk = listnextnode(current_label_chunk); | |
2309 | } | |
2310 | ||
2311 | end: | |
2312 | /* we moved till the last chunk, or were not able to find a label, | |
2313 | so let's ask for another one */ | |
5afba51d RW |
2314 | if (!current_label_chunk || |
2315 | current_label_chunk == listtail(label_chunk_list) || | |
2316 | label == NO_LABEL) { | |
fea12efb | 2317 | if (lde_get_label_chunk() != 0) |
2318 | log_warn("%s: Error getting label chunk!", __func__); | |
2319 | ||
2320 | } | |
2321 | ||
5afba51d | 2322 | return (label); |
fea12efb | 2323 | } |
2d1aa1e8 | 2324 | |
2325 | static void | |
2326 | lde_check_filter_af(int af, struct ldpd_af_conf *af_conf, | |
2327 | const char *filter_name) | |
2328 | { | |
2329 | if (strcmp(af_conf->acl_label_allocate_for, filter_name) == 0) | |
2330 | lde_change_allocate_filter(af); | |
575f30ce | 2331 | |
2d1aa1e8 | 2332 | if ((strcmp(af_conf->acl_label_advertise_to, filter_name) == 0) |
2333 | || (strcmp(af_conf->acl_label_advertise_for, filter_name) == 0)) | |
2334 | lde_change_advertise_filter(af); | |
575f30ce | 2335 | |
2d1aa1e8 | 2336 | if ((strcmp(af_conf->acl_label_accept_for, filter_name) == 0) |
2337 | || (strcmp(af_conf->acl_label_accept_from, filter_name) == 0)) | |
2338 | lde_change_accept_filter(af); | |
575f30ce | 2339 | |
2d1aa1e8 | 2340 | if (strcmp(af_conf->acl_label_expnull_for, filter_name) == 0) |
2341 | lde_change_expnull_for_filter(af); | |
2342 | } | |
95535717 | 2343 | |
2344 | void lde_route_update(struct iface *iface, int af) | |
2345 | { | |
2346 | struct fec *f; | |
2347 | struct fec_node *fn; | |
2348 | struct fec_nh *fnh; | |
2349 | struct lde_nbr *ln; | |
2350 | ||
2351 | /* update label of non-connected routes */ | |
2352 | log_debug("update labels for interface %s", iface->name); | |
575f30ce | 2353 | |
95535717 | 2354 | RB_FOREACH(f, fec_tree, &ft) { |
2355 | fn = (struct fec_node *)f; | |
2356 | if (IS_MPLS_UNRESERVED_LABEL(fn->local_label)) | |
2357 | continue; | |
2358 | ||
2359 | switch (af) { | |
2360 | case AF_INET: | |
2361 | if (fn->fec.type != FEC_TYPE_IPV4) | |
2362 | continue; | |
2363 | break; | |
2364 | case AF_INET6: | |
2365 | if (fn->fec.type != FEC_TYPE_IPV6) | |
2366 | continue; | |
2367 | break; | |
2368 | default: | |
2369 | /* unspecified so process both address families */ | |
2370 | break; | |
2371 | } | |
2372 | ||
2373 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
2374 | /* | |
2375 | * If connected leave existing label. If LDP | |
2376 | * configured on interface or a static route | |
2377 | * may need new label. If no LDP configured | |
2378 | * treat fec as a connected route | |
2379 | */ | |
575f30ce | 2380 | if (CHECK_FLAG(fnh->flags, F_FEC_NH_CONNECTED)) |
95535717 | 2381 | break; |
2382 | ||
2383 | if (fnh->ifindex != iface->ifindex) | |
2384 | continue; | |
2385 | ||
575f30ce | 2386 | UNSET_FLAG(fnh->flags, F_FEC_NH_NO_LDP); |
95535717 | 2387 | if (IS_MPLS_RESERVED_LABEL(fn->local_label)) { |
2388 | fn->local_label = NO_LABEL; | |
2389 | fn->local_label = lde_update_label(fn); | |
2390 | if (fn->local_label != NO_LABEL) | |
2391 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2392 | lde_send_labelmapping( | |
2393 | ln, fn, 0); | |
2394 | } | |
2395 | break; | |
2396 | } | |
2397 | } | |
575f30ce | 2398 | |
95535717 | 2399 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) |
2400 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, | |
2401 | 0, NULL, 0); | |
2402 | } | |
2403 | ||
2404 | void lde_route_update_release(struct iface *iface, int af) | |
2405 | { | |
2406 | struct lde_nbr *ln; | |
2407 | struct fec *f; | |
2408 | struct fec_node *fn; | |
2409 | struct fec_nh *fnh; | |
2410 | ||
2411 | /* update label of interfaces no longer running LDP */ | |
2412 | log_debug("release all labels for interface %s af %s", iface->name, | |
2413 | af == AF_INET ? "ipv4" : "ipv6"); | |
575f30ce | 2414 | |
95535717 | 2415 | RB_FOREACH(f, fec_tree, &ft) { |
2416 | fn = (struct fec_node *)f; | |
2417 | ||
2418 | switch (af) { | |
2419 | case AF_INET: | |
2420 | if (fn->fec.type != FEC_TYPE_IPV4) | |
2421 | continue; | |
2422 | break; | |
2423 | case AF_INET6: | |
2424 | if (fn->fec.type != FEC_TYPE_IPV6) | |
2425 | continue; | |
2426 | break; | |
2427 | default: | |
2428 | fatalx("lde_route_update_release: unknown af"); | |
2429 | } | |
2430 | ||
2431 | if (fn->local_label == NO_LABEL) | |
2432 | continue; | |
2433 | ||
2434 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
2435 | /* | |
2436 | * If connected leave existing label. If LDP | |
2437 | * removed from interface may need new label | |
2438 | * and would be treated as a connected route | |
2439 | */ | |
575f30ce | 2440 | if (CHECK_FLAG(fnh->flags, F_FEC_NH_CONNECTED)) |
95535717 | 2441 | break; |
2442 | ||
2443 | if (fnh->ifindex != iface->ifindex) | |
2444 | continue; | |
2445 | ||
575f30ce | 2446 | SET_FLAG(fnh->flags, F_FEC_NH_NO_LDP); |
95535717 | 2447 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) |
2448 | lde_send_labelwithdraw(ln, fn, NULL, NULL); | |
2449 | lde_free_label(fn->local_label); | |
2450 | fn->local_label = NO_LABEL; | |
2451 | fn->local_label = lde_update_label(fn); | |
2452 | if (fn->local_label != NO_LABEL) | |
2453 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2454 | lde_send_labelmapping(ln, fn, 0); | |
2455 | break; | |
2456 | } | |
2457 | } | |
575f30ce | 2458 | |
95535717 | 2459 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) |
2460 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, | |
2461 | 0, NULL, 0); | |
2462 | } | |
2463 | ||
2464 | void lde_route_update_release_all(int af) | |
2465 | { | |
2466 | struct lde_nbr *ln; | |
2467 | struct fec *f; | |
2468 | struct fec_node *fn; | |
2469 | struct fec_nh *fnh; | |
2470 | ||
2471 | /* remove labels from all interfaces as LDP is no longer running for | |
2472 | * this address family | |
2473 | */ | |
2474 | log_debug("release all labels for address family %s", | |
2475 | af == AF_INET ? "ipv4" : "ipv6"); | |
575f30ce | 2476 | |
95535717 | 2477 | RB_FOREACH(f, fec_tree, &ft) { |
2478 | fn = (struct fec_node *)f; | |
2479 | switch (af) { | |
2480 | case AF_INET: | |
2481 | if (fn->fec.type != FEC_TYPE_IPV4) | |
2482 | continue; | |
2483 | break; | |
2484 | case AF_INET6: | |
2485 | if (fn->fec.type != FEC_TYPE_IPV6) | |
2486 | continue; | |
2487 | break; | |
2488 | default: | |
2489 | fatalx("lde_route_update_release: unknown af"); | |
2490 | } | |
2491 | ||
2492 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
2493 | lde_send_labelwithdraw(ln, fn, NULL, NULL); | |
2494 | ||
2495 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
575f30ce | 2496 | SET_FLAG(fnh->flags, F_FEC_NH_NO_LDP); |
95535717 | 2497 | lde_send_delete_klabel(fn, fnh); |
2498 | } | |
2499 | } | |
2500 | } |