]>
Commit | Line | Data |
---|---|---|
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" |
8429abe0 | 30 | |
eac6e3f0 RW |
31 | #include <lib/log.h> |
32 | #include "memory.h" | |
33 | #include "privs.h" | |
34 | #include "sigevent.h" | |
35 | #include "mpls.h" | |
fea12efb | 36 | #include <lib/linklist.h> |
37 | #include "zclient.h" | |
38 | #include "stream.h" | |
39 | #include "network.h" | |
eac6e3f0 RW |
40 | |
41 | static void lde_shutdown(void); | |
42 | static int lde_dispatch_imsg(struct thread *); | |
43 | static int lde_dispatch_parent(struct thread *); | |
05aac414 | 44 | static __inline int lde_nbr_compare(struct lde_nbr *, |
8429abe0 RW |
45 | struct lde_nbr *); |
46 | static struct lde_nbr *lde_nbr_new(uint32_t, struct lde_nbr *); | |
47 | static void lde_nbr_del(struct lde_nbr *); | |
48 | static struct lde_nbr *lde_nbr_find(uint32_t); | |
49 | static void lde_nbr_clear(void); | |
50 | static void lde_nbr_addr_update(struct lde_nbr *, | |
51 | struct lde_addr *, int); | |
d3e1887a | 52 | static __inline int lde_map_compare(struct lde_map *, struct lde_map *); |
8429abe0 RW |
53 | static void lde_map_free(void *); |
54 | static int lde_address_add(struct lde_nbr *, struct lde_addr *); | |
55 | static int lde_address_del(struct lde_nbr *, struct lde_addr *); | |
56 | static void lde_address_list_free(struct lde_nbr *); | |
fea12efb | 57 | static void zclient_sync_init (u_short instance); |
58 | static void lde_label_list_init(void); | |
59 | static int lde_get_label_chunk (void); | |
60 | static void on_get_label_chunk_response(uint32_t start, uint32_t end); | |
61 | static uint32_t lde_get_next_label(void); | |
8429abe0 RW |
62 | |
63 | RB_GENERATE(nbr_tree, lde_nbr, entry, lde_nbr_compare) | |
d3e1887a | 64 | RB_GENERATE(lde_map_head, lde_map, entry, lde_map_compare) |
8429abe0 RW |
65 | |
66 | struct ldpd_conf *ldeconf; | |
67 | struct nbr_tree lde_nbrs = RB_INITIALIZER(&lde_nbrs); | |
68 | ||
69 | static struct imsgev *iev_ldpe; | |
28e8294c | 70 | static struct imsgev *iev_main, *iev_main_sync; |
8429abe0 | 71 | |
eac6e3f0 RW |
72 | /* Master of threads. */ |
73 | struct thread_master *master; | |
74 | ||
75 | /* lde privileges */ | |
76 | static zebra_capabilities_t _caps_p [] = | |
8429abe0 | 77 | { |
eac6e3f0 RW |
78 | /* none */ |
79 | }; | |
8429abe0 | 80 | |
eac6e3f0 RW |
81 | static struct zebra_privs_t lde_privs = |
82 | { | |
eac6e3f0 RW |
83 | #if defined(VTY_GROUP) |
84 | .vty_group = VTY_GROUP, | |
85 | #endif | |
86 | .caps_p = _caps_p, | |
87 | .cap_num_p = array_size(_caps_p), | |
88 | .cap_num_i = 0 | |
89 | }; | |
90 | ||
fea12efb | 91 | /* List of chunks of labels externally assigned by Zebra */ |
92 | struct list *label_chunk_list; | |
93 | struct listnode *current_label_chunk; | |
94 | ||
eac6e3f0 RW |
95 | /* SIGINT / SIGTERM handler. */ |
96 | static void | |
97 | sigint(void) | |
98 | { | |
99 | lde_shutdown(); | |
8429abe0 RW |
100 | } |
101 | ||
eac6e3f0 RW |
102 | static struct quagga_signal_t lde_signals[] = |
103 | { | |
1e7e440f RW |
104 | { |
105 | .signal = SIGHUP, | |
106 | /* ignore */ | |
107 | }, | |
eac6e3f0 RW |
108 | { |
109 | .signal = SIGINT, | |
110 | .handler = &sigint, | |
111 | }, | |
112 | { | |
113 | .signal = SIGTERM, | |
114 | .handler = &sigint, | |
115 | }, | |
116 | }; | |
117 | ||
fea12efb | 118 | struct zclient *zclient_sync = NULL; |
119 | static void | |
120 | zclient_sync_init(u_short instance) | |
121 | { | |
122 | /* Initialize special zclient for synchronous message exchanges. */ | |
123 | log_debug("Initializing synchronous zclient for label manager"); | |
124 | zclient_sync = zclient_new(master); | |
125 | zclient_sync->sock = -1; | |
126 | zclient_sync->redist_default = ZEBRA_ROUTE_LDP; | |
127 | zclient_sync->instance = instance; | |
73be9aeb | 128 | while (zclient_socket_connect (zclient_sync) < 0) { |
d8292558 | 129 | log_warnx("Error connecting synchronous zclient!"); |
30f35e85 | 130 | sleep(1); |
fea12efb | 131 | } |
5c7ef8dc | 132 | /* make socket non-blocking */ |
133 | sock_set_nonblock(zclient_sync->sock); | |
fea12efb | 134 | |
135 | /* Connect to label manager */ | |
73be9aeb | 136 | while (lm_label_manager_connect (zclient_sync) != 0) { |
d8292558 | 137 | log_warnx("Error connecting to label manager!"); |
30f35e85 | 138 | sleep(1); |
fea12efb | 139 | } |
140 | } | |
141 | ||
8429abe0 RW |
142 | /* label decision engine */ |
143 | void | |
e75f810c | 144 | lde(void) |
8429abe0 | 145 | { |
eac6e3f0 | 146 | struct thread thread; |
8429abe0 | 147 | |
eac6e3f0 | 148 | #ifdef HAVE_SETPROCTITLE |
8429abe0 | 149 | setproctitle("label decision engine"); |
eac6e3f0 | 150 | #endif |
8429abe0 | 151 | ldpd_process = PROC_LDE_ENGINE; |
0b4d8f1e | 152 | log_procname = log_procnames[PROC_LDE_ENGINE]; |
8429abe0 | 153 | |
eac6e3f0 | 154 | master = thread_master_create(); |
8429abe0 RW |
155 | |
156 | /* setup signal handler */ | |
eac6e3f0 | 157 | signal_init(master, array_size(lde_signals), lde_signals); |
8429abe0 | 158 | |
28e8294c RW |
159 | /* setup pipes and event handlers to the parent process */ |
160 | if ((iev_main = calloc(1, sizeof(struct imsgev))) == NULL) | |
8429abe0 | 161 | fatal(NULL); |
28e8294c | 162 | imsg_init(&iev_main->ibuf, LDPD_FD_ASYNC); |
eac6e3f0 RW |
163 | iev_main->handler_read = lde_dispatch_parent; |
164 | iev_main->ev_read = thread_add_read(master, iev_main->handler_read, | |
165 | iev_main, iev_main->ibuf.fd); | |
166 | iev_main->handler_write = ldp_write_handler; | |
28e8294c RW |
167 | |
168 | if ((iev_main_sync = calloc(1, sizeof(struct imsgev))) == NULL) | |
169 | fatal(NULL); | |
170 | imsg_init(&iev_main_sync->ibuf, LDPD_FD_SYNC); | |
eac6e3f0 | 171 | |
e75f810c RW |
172 | /* create base configuration */ |
173 | ldeconf = config_new_empty(); | |
174 | ||
175 | /* Fetch next active thread. */ | |
176 | while (thread_fetch(master, &thread)) | |
177 | thread_call(&thread); | |
178 | } | |
179 | ||
180 | void | |
181 | lde_init(struct ldpd_init *init) | |
182 | { | |
183 | /* drop privileges */ | |
6bbf78cf RW |
184 | lde_privs.user = init->user; |
185 | lde_privs.group = init->group; | |
e75f810c RW |
186 | zprivs_init(&lde_privs); |
187 | ||
eac6e3f0 | 188 | /* start the LIB garbage collector */ |
8429abe0 RW |
189 | lde_gc_start_timer(); |
190 | ||
fea12efb | 191 | /* Init synchronous zclient and label list */ |
e75f810c RW |
192 | zclient_serv_path_set(init->zclient_serv_path); |
193 | zclient_sync_init(init->instance); | |
fea12efb | 194 | lde_label_list_init(); |
8429abe0 RW |
195 | } |
196 | ||
eac6e3f0 | 197 | static void |
8429abe0 RW |
198 | lde_shutdown(void) |
199 | { | |
200 | /* close pipes */ | |
b3121cd7 RW |
201 | if (iev_ldpe) { |
202 | msgbuf_clear(&iev_ldpe->ibuf.w); | |
203 | close(iev_ldpe->ibuf.fd); | |
204 | } | |
8429abe0 RW |
205 | msgbuf_clear(&iev_main->ibuf.w); |
206 | close(iev_main->ibuf.fd); | |
28e8294c RW |
207 | msgbuf_clear(&iev_main_sync->ibuf.w); |
208 | close(iev_main_sync->ibuf.fd); | |
8429abe0 RW |
209 | |
210 | lde_gc_stop_timer(); | |
211 | lde_nbr_clear(); | |
212 | fec_tree_clear(); | |
213 | ||
214 | config_clear(ldeconf); | |
215 | ||
b3121cd7 RW |
216 | if (iev_ldpe) |
217 | free(iev_ldpe); | |
8429abe0 | 218 | free(iev_main); |
28e8294c | 219 | free(iev_main_sync); |
8429abe0 RW |
220 | |
221 | log_info("label decision engine exiting"); | |
222 | exit(0); | |
223 | } | |
224 | ||
225 | /* imesg */ | |
eac6e3f0 | 226 | int |
8429abe0 RW |
227 | lde_imsg_compose_parent(int type, pid_t pid, void *data, uint16_t datalen) |
228 | { | |
229 | return (imsg_compose_event(iev_main, type, 0, pid, -1, data, datalen)); | |
230 | } | |
231 | ||
d8292558 RW |
232 | void |
233 | lde_imsg_compose_parent_sync(int type, pid_t pid, void *data, uint16_t datalen) | |
234 | { | |
235 | imsg_compose_event(iev_main_sync, type, 0, pid, -1, data, datalen); | |
236 | imsg_flush(&iev_main_sync->ibuf); | |
237 | } | |
238 | ||
8429abe0 RW |
239 | int |
240 | lde_imsg_compose_ldpe(int type, uint32_t peerid, pid_t pid, void *data, | |
241 | uint16_t datalen) | |
242 | { | |
243 | return (imsg_compose_event(iev_ldpe, type, peerid, pid, | |
244 | -1, data, datalen)); | |
245 | } | |
246 | ||
247 | /* ARGSUSED */ | |
eac6e3f0 RW |
248 | static int |
249 | lde_dispatch_imsg(struct thread *thread) | |
8429abe0 | 250 | { |
eac6e3f0 | 251 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
252 | struct imsgbuf *ibuf = &iev->ibuf; |
253 | struct imsg imsg; | |
254 | struct lde_nbr *ln; | |
236c6935 RW |
255 | struct map *map; |
256 | struct lde_addr *lde_addr; | |
257 | struct notify_msg *nm; | |
8429abe0 | 258 | ssize_t n; |
eac6e3f0 | 259 | int shut = 0; |
8429abe0 | 260 | |
eac6e3f0 RW |
261 | iev->ev_read = NULL; |
262 | ||
263 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
264 | fatal("imsg_read error"); | |
265 | if (n == 0) /* connection closed */ | |
266 | shut = 1; | |
8429abe0 RW |
267 | |
268 | for (;;) { | |
269 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
270 | fatal("lde_dispatch_imsg: imsg_get error"); | |
271 | if (n == 0) | |
272 | break; | |
273 | ||
274 | switch (imsg.hdr.type) { | |
275 | case IMSG_LABEL_MAPPING_FULL: | |
276 | ln = lde_nbr_find(imsg.hdr.peerid); | |
277 | if (ln == NULL) { | |
278 | log_debug("%s: cannot find lde neighbor", | |
279 | __func__); | |
280 | break; | |
281 | } | |
282 | ||
283 | fec_snap(ln); | |
284 | break; | |
285 | case IMSG_LABEL_MAPPING: | |
286 | case IMSG_LABEL_REQUEST: | |
287 | case IMSG_LABEL_RELEASE: | |
288 | case IMSG_LABEL_WITHDRAW: | |
289 | case IMSG_LABEL_ABORT: | |
236c6935 RW |
290 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
291 | sizeof(struct map)) | |
8429abe0 | 292 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 293 | map = imsg.data; |
8429abe0 RW |
294 | |
295 | ln = lde_nbr_find(imsg.hdr.peerid); | |
296 | if (ln == NULL) { | |
297 | log_debug("%s: cannot find lde neighbor", | |
298 | __func__); | |
299 | break; | |
300 | } | |
301 | ||
302 | switch (imsg.hdr.type) { | |
303 | case IMSG_LABEL_MAPPING: | |
236c6935 | 304 | lde_check_mapping(map, ln); |
8429abe0 RW |
305 | break; |
306 | case IMSG_LABEL_REQUEST: | |
236c6935 | 307 | lde_check_request(map, ln); |
8429abe0 RW |
308 | break; |
309 | case IMSG_LABEL_RELEASE: | |
236c6935 | 310 | lde_check_release(map, ln); |
8429abe0 RW |
311 | break; |
312 | case IMSG_LABEL_WITHDRAW: | |
236c6935 | 313 | lde_check_withdraw(map, ln); |
8429abe0 RW |
314 | break; |
315 | case IMSG_LABEL_ABORT: | |
316 | /* not necessary */ | |
317 | break; | |
318 | } | |
319 | break; | |
320 | case IMSG_ADDRESS_ADD: | |
236c6935 RW |
321 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
322 | sizeof(struct lde_addr)) | |
8429abe0 | 323 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 324 | lde_addr = imsg.data; |
8429abe0 RW |
325 | |
326 | ln = lde_nbr_find(imsg.hdr.peerid); | |
327 | if (ln == NULL) { | |
328 | log_debug("%s: cannot find lde neighbor", | |
329 | __func__); | |
330 | break; | |
331 | } | |
236c6935 | 332 | if (lde_address_add(ln, lde_addr) < 0) { |
8429abe0 RW |
333 | log_debug("%s: cannot add address %s, it " |
334 | "already exists", __func__, | |
236c6935 | 335 | log_addr(lde_addr->af, &lde_addr->addr)); |
8429abe0 RW |
336 | } |
337 | break; | |
338 | case IMSG_ADDRESS_DEL: | |
236c6935 RW |
339 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
340 | sizeof(struct lde_addr)) | |
8429abe0 | 341 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 342 | lde_addr = imsg.data; |
8429abe0 RW |
343 | |
344 | ln = lde_nbr_find(imsg.hdr.peerid); | |
345 | if (ln == NULL) { | |
346 | log_debug("%s: cannot find lde neighbor", | |
347 | __func__); | |
348 | break; | |
349 | } | |
236c6935 | 350 | if (lde_address_del(ln, lde_addr) < 0) { |
8429abe0 RW |
351 | log_debug("%s: cannot delete address %s, it " |
352 | "does not exist", __func__, | |
236c6935 | 353 | log_addr(lde_addr->af, &lde_addr->addr)); |
8429abe0 RW |
354 | } |
355 | break; | |
356 | case IMSG_NOTIFICATION: | |
236c6935 RW |
357 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
358 | sizeof(struct notify_msg)) | |
8429abe0 | 359 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 360 | nm = imsg.data; |
8429abe0 RW |
361 | |
362 | ln = lde_nbr_find(imsg.hdr.peerid); | |
363 | if (ln == NULL) { | |
364 | log_debug("%s: cannot find lde neighbor", | |
365 | __func__); | |
366 | break; | |
367 | } | |
368 | ||
236c6935 | 369 | switch (nm->status_code) { |
8429abe0 | 370 | case S_PW_STATUS: |
236c6935 | 371 | l2vpn_recv_pw_status(ln, nm); |
8429abe0 | 372 | break; |
257799cd RW |
373 | case S_ENDOFLIB: |
374 | /* | |
375 | * Do nothing for now. Should be useful in | |
376 | * the future when we implement LDP-IGP | |
377 | * Synchronization (RFC 5443) and Graceful | |
378 | * Restart (RFC 3478). | |
379 | */ | |
8429abe0 RW |
380 | default: |
381 | break; | |
382 | } | |
383 | break; | |
384 | case IMSG_NEIGHBOR_UP: | |
385 | if (imsg.hdr.len - IMSG_HEADER_SIZE != | |
386 | sizeof(struct lde_nbr)) | |
387 | fatalx("lde_dispatch_imsg: wrong imsg len"); | |
388 | ||
389 | if (lde_nbr_find(imsg.hdr.peerid)) | |
390 | fatalx("lde_dispatch_imsg: " | |
391 | "neighbor already exists"); | |
392 | lde_nbr_new(imsg.hdr.peerid, imsg.data); | |
393 | break; | |
394 | case IMSG_NEIGHBOR_DOWN: | |
395 | lde_nbr_del(lde_nbr_find(imsg.hdr.peerid)); | |
396 | break; | |
397 | case IMSG_CTL_SHOW_LIB: | |
398 | rt_dump(imsg.hdr.pid); | |
399 | ||
400 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
401 | imsg.hdr.pid, NULL, 0); | |
402 | break; | |
403 | case IMSG_CTL_SHOW_L2VPN_PW: | |
404 | l2vpn_pw_ctl(imsg.hdr.pid); | |
405 | ||
406 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
407 | imsg.hdr.pid, NULL, 0); | |
408 | break; | |
409 | case IMSG_CTL_SHOW_L2VPN_BINDING: | |
410 | l2vpn_binding_ctl(imsg.hdr.pid); | |
411 | ||
412 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
413 | imsg.hdr.pid, NULL, 0); | |
414 | break; | |
8429abe0 RW |
415 | default: |
416 | log_debug("%s: unexpected imsg %d", __func__, | |
417 | imsg.hdr.type); | |
418 | break; | |
419 | } | |
420 | imsg_free(&imsg); | |
421 | } | |
422 | if (!shut) | |
423 | imsg_event_add(iev); | |
424 | else { | |
eac6e3f0 RW |
425 | /* this pipe is dead, so remove the event handlers and exit */ |
426 | THREAD_READ_OFF(iev->ev_read); | |
427 | THREAD_WRITE_OFF(iev->ev_write); | |
428 | lde_shutdown(); | |
8429abe0 | 429 | } |
eac6e3f0 RW |
430 | |
431 | return (0); | |
8429abe0 RW |
432 | } |
433 | ||
434 | /* ARGSUSED */ | |
eac6e3f0 RW |
435 | static int |
436 | lde_dispatch_parent(struct thread *thread) | |
8429abe0 RW |
437 | { |
438 | static struct ldpd_conf *nconf; | |
52b530fc | 439 | struct iface *iface, *niface; |
8429abe0 RW |
440 | struct tnbr *ntnbr; |
441 | struct nbr_params *nnbrp; | |
52b530fc RW |
442 | static struct l2vpn *l2vpn, *nl2vpn; |
443 | struct l2vpn_if *lif, *nlif; | |
444 | struct l2vpn_pw *pw, *npw; | |
8429abe0 | 445 | struct imsg imsg; |
52b530fc | 446 | struct kif *kif; |
236c6935 | 447 | struct kroute *kr; |
eac6e3f0 RW |
448 | int fd = THREAD_FD(thread); |
449 | struct imsgev *iev = THREAD_ARG(thread); | |
8429abe0 RW |
450 | struct imsgbuf *ibuf = &iev->ibuf; |
451 | ssize_t n; | |
452 | int shut = 0; | |
453 | struct fec fec; | |
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); | |
478 | break; | |
479 | } | |
480 | ||
481 | RB_FOREACH(l2vpn, l2vpn_head, &ldeconf->l2vpn_tree) { | |
482 | lif = l2vpn_if_find(l2vpn, kif->ifname); | |
483 | if (lif) { | |
484 | l2vpn_if_update_info(lif, kif); | |
485 | break; | |
486 | } | |
487 | pw = l2vpn_pw_find(l2vpn, kif->ifname); | |
488 | if (pw) { | |
489 | l2vpn_pw_update_info(pw, kif); | |
490 | break; | |
491 | } | |
492 | } | |
493 | break; | |
49416a99 RW |
494 | case IMSG_PW_UPDATE: |
495 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
496 | sizeof(struct zapi_pw_status)) | |
497 | fatalx("PW_UPDATE imsg with wrong len"); | |
498 | ||
499 | if (l2vpn_pw_status_update(imsg.data) != 0) | |
500 | log_warnx("%s: error updating PW status", | |
501 | __func__); | |
502 | break; | |
8429abe0 | 503 | case IMSG_NETWORK_ADD: |
8cb1fc45 | 504 | case IMSG_NETWORK_UPDATE: |
236c6935 RW |
505 | if (imsg.hdr.len != IMSG_HEADER_SIZE + |
506 | sizeof(struct kroute)) { | |
8429abe0 RW |
507 | log_warnx("%s: wrong imsg len", __func__); |
508 | break; | |
509 | } | |
236c6935 | 510 | kr = imsg.data; |
8429abe0 | 511 | |
236c6935 | 512 | switch (kr->af) { |
8429abe0 RW |
513 | case AF_INET: |
514 | fec.type = FEC_TYPE_IPV4; | |
236c6935 RW |
515 | fec.u.ipv4.prefix = kr->prefix.v4; |
516 | fec.u.ipv4.prefixlen = kr->prefixlen; | |
8429abe0 RW |
517 | break; |
518 | case AF_INET6: | |
519 | fec.type = FEC_TYPE_IPV6; | |
236c6935 RW |
520 | fec.u.ipv6.prefix = kr->prefix.v6; |
521 | fec.u.ipv6.prefixlen = kr->prefixlen; | |
8429abe0 RW |
522 | break; |
523 | default: | |
524 | fatalx("lde_dispatch_parent: unknown af"); | |
525 | } | |
526 | ||
527 | switch (imsg.hdr.type) { | |
528 | case IMSG_NETWORK_ADD: | |
236c6935 RW |
529 | lde_kernel_insert(&fec, kr->af, &kr->nexthop, |
530 | kr->ifindex, kr->priority, | |
531 | kr->flags & F_CONNECTED, NULL); | |
8429abe0 | 532 | break; |
8cb1fc45 RW |
533 | case IMSG_NETWORK_UPDATE: |
534 | lde_kernel_update(&fec); | |
8429abe0 RW |
535 | break; |
536 | } | |
537 | break; | |
538 | case IMSG_SOCKET_IPC: | |
539 | if (iev_ldpe) { | |
540 | log_warnx("%s: received unexpected imsg fd " | |
541 | "to ldpe", __func__); | |
542 | break; | |
543 | } | |
544 | if ((fd = imsg.fd) == -1) { | |
545 | log_warnx("%s: expected to receive imsg fd to " | |
546 | "ldpe but didn't receive any", __func__); | |
547 | break; | |
548 | } | |
549 | ||
550 | if ((iev_ldpe = malloc(sizeof(struct imsgev))) == NULL) | |
551 | fatal(NULL); | |
552 | imsg_init(&iev_ldpe->ibuf, fd); | |
eac6e3f0 RW |
553 | iev_ldpe->handler_read = lde_dispatch_imsg; |
554 | iev_ldpe->ev_read = thread_add_read(master, | |
555 | iev_ldpe->handler_read, iev_ldpe, iev_ldpe->ibuf.fd); | |
556 | iev_ldpe->handler_write = ldp_write_handler; | |
557 | iev_ldpe->ev_write = NULL; | |
8429abe0 | 558 | break; |
e75f810c RW |
559 | case IMSG_INIT: |
560 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
561 | sizeof(struct ldpd_init)) | |
562 | fatalx("INIT imsg with wrong len"); | |
563 | ||
564 | memcpy(&init, imsg.data, sizeof(init)); | |
565 | lde_init(&init); | |
566 | break; | |
8429abe0 RW |
567 | case IMSG_RECONF_CONF: |
568 | if ((nconf = malloc(sizeof(struct ldpd_conf))) == | |
569 | NULL) | |
570 | fatal(NULL); | |
571 | memcpy(nconf, imsg.data, sizeof(struct ldpd_conf)); | |
572 | ||
7d3d7491 | 573 | RB_INIT(&nconf->iface_tree); |
7989cdba | 574 | RB_INIT(&nconf->tnbr_tree); |
76c4abd1 | 575 | RB_INIT(&nconf->nbrp_tree); |
90d7e7bd | 576 | RB_INIT(&nconf->l2vpn_tree); |
8429abe0 RW |
577 | break; |
578 | case IMSG_RECONF_IFACE: | |
579 | if ((niface = malloc(sizeof(struct iface))) == NULL) | |
580 | fatal(NULL); | |
581 | memcpy(niface, imsg.data, sizeof(struct iface)); | |
582 | ||
7d3d7491 | 583 | RB_INSERT(iface_head, &nconf->iface_tree, niface); |
8429abe0 RW |
584 | break; |
585 | case IMSG_RECONF_TNBR: | |
586 | if ((ntnbr = malloc(sizeof(struct tnbr))) == NULL) | |
587 | fatal(NULL); | |
588 | memcpy(ntnbr, imsg.data, sizeof(struct tnbr)); | |
589 | ||
7989cdba | 590 | RB_INSERT(tnbr_head, &nconf->tnbr_tree, ntnbr); |
8429abe0 RW |
591 | break; |
592 | case IMSG_RECONF_NBRP: | |
593 | if ((nnbrp = malloc(sizeof(struct nbr_params))) == NULL) | |
594 | fatal(NULL); | |
595 | memcpy(nnbrp, imsg.data, sizeof(struct nbr_params)); | |
596 | ||
76c4abd1 | 597 | RB_INSERT(nbrp_head, &nconf->nbrp_tree, nnbrp); |
8429abe0 RW |
598 | break; |
599 | case IMSG_RECONF_L2VPN: | |
600 | if ((nl2vpn = malloc(sizeof(struct l2vpn))) == NULL) | |
601 | fatal(NULL); | |
602 | memcpy(nl2vpn, imsg.data, sizeof(struct l2vpn)); | |
603 | ||
029c1958 | 604 | RB_INIT(&nl2vpn->if_tree); |
20bacaeb RW |
605 | RB_INIT(&nl2vpn->pw_tree); |
606 | RB_INIT(&nl2vpn->pw_inactive_tree); | |
8429abe0 | 607 | |
90d7e7bd | 608 | RB_INSERT(l2vpn_head, &nconf->l2vpn_tree, nl2vpn); |
8429abe0 RW |
609 | break; |
610 | case IMSG_RECONF_L2VPN_IF: | |
611 | if ((nlif = malloc(sizeof(struct l2vpn_if))) == NULL) | |
612 | fatal(NULL); | |
613 | memcpy(nlif, imsg.data, sizeof(struct l2vpn_if)); | |
614 | ||
029c1958 | 615 | RB_INSERT(l2vpn_if_head, &nl2vpn->if_tree, nlif); |
8429abe0 RW |
616 | break; |
617 | case IMSG_RECONF_L2VPN_PW: | |
618 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
619 | fatal(NULL); | |
620 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
621 | ||
20bacaeb | 622 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_tree, npw); |
8429abe0 | 623 | break; |
eac6e3f0 RW |
624 | case IMSG_RECONF_L2VPN_IPW: |
625 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
626 | fatal(NULL); | |
627 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
628 | ||
20bacaeb | 629 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree, npw); |
eac6e3f0 | 630 | break; |
8429abe0 RW |
631 | case IMSG_RECONF_END: |
632 | merge_config(ldeconf, nconf); | |
1d75a89d | 633 | ldp_clear_config(nconf); |
8429abe0 RW |
634 | nconf = NULL; |
635 | break; | |
eac6e3f0 RW |
636 | case IMSG_DEBUG_UPDATE: |
637 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
638 | sizeof(ldp_debug)) { | |
639 | log_warnx("%s: wrong imsg len", __func__); | |
640 | break; | |
641 | } | |
642 | memcpy(&ldp_debug, imsg.data, sizeof(ldp_debug)); | |
643 | break; | |
8429abe0 RW |
644 | default: |
645 | log_debug("%s: unexpected imsg %d", __func__, | |
646 | imsg.hdr.type); | |
647 | break; | |
648 | } | |
649 | imsg_free(&imsg); | |
650 | } | |
651 | if (!shut) | |
652 | imsg_event_add(iev); | |
653 | else { | |
eac6e3f0 RW |
654 | /* this pipe is dead, so remove the event handlers and exit */ |
655 | THREAD_READ_OFF(iev->ev_read); | |
656 | THREAD_WRITE_OFF(iev->ev_write); | |
657 | lde_shutdown(); | |
8429abe0 | 658 | } |
eac6e3f0 RW |
659 | |
660 | return (0); | |
8429abe0 RW |
661 | } |
662 | ||
45a8eba9 RW |
663 | int |
664 | lde_acl_check(char *acl_name, int af, union ldpd_addr *addr, uint8_t prefixlen) | |
665 | { | |
666 | return ldp_acl_request(iev_main_sync, acl_name, af, addr, prefixlen); | |
667 | } | |
668 | ||
8429abe0 | 669 | uint32_t |
8cb1fc45 | 670 | lde_update_label(struct fec_node *fn) |
8429abe0 | 671 | { |
8cb1fc45 RW |
672 | struct fec_nh *fnh; |
673 | int connected = 0; | |
674 | ||
675 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
676 | if (fnh->flags & F_FEC_NH_CONNECTED) { | |
677 | connected = 1; | |
678 | break; | |
679 | } | |
680 | } | |
8429abe0 | 681 | |
45a8eba9 | 682 | /* should we allocate a label for this fec? */ |
8cb1fc45 | 683 | switch (fn->fec.type) { |
45a8eba9 RW |
684 | case FEC_TYPE_IPV4: |
685 | if ((ldeconf->ipv4.flags & F_LDPD_AF_ALLOCHOSTONLY) && | |
8cb1fc45 | 686 | fn->fec.u.ipv4.prefixlen != 32) |
45a8eba9 RW |
687 | return (NO_LABEL); |
688 | if (lde_acl_check(ldeconf->ipv4.acl_label_allocate_for, | |
8cb1fc45 RW |
689 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, |
690 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
691 | return (NO_LABEL); |
692 | break; | |
693 | case FEC_TYPE_IPV6: | |
694 | if ((ldeconf->ipv6.flags & F_LDPD_AF_ALLOCHOSTONLY) && | |
8cb1fc45 | 695 | fn->fec.u.ipv6.prefixlen != 128) |
45a8eba9 RW |
696 | return (NO_LABEL); |
697 | if (lde_acl_check(ldeconf->ipv6.acl_label_allocate_for, | |
8cb1fc45 RW |
698 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, |
699 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
700 | return (NO_LABEL); |
701 | break; | |
702 | default: | |
45a8eba9 RW |
703 | break; |
704 | } | |
705 | ||
706 | if (connected) { | |
707 | /* choose implicit or explicit-null depending on configuration */ | |
8cb1fc45 | 708 | switch (fn->fec.type) { |
45a8eba9 RW |
709 | case FEC_TYPE_IPV4: |
710 | if (!(ldeconf->ipv4.flags & F_LDPD_AF_EXPNULL)) | |
711 | return (MPLS_LABEL_IMPLNULL); | |
712 | if (lde_acl_check(ldeconf->ipv4.acl_label_expnull_for, | |
8cb1fc45 RW |
713 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, |
714 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
715 | return (MPLS_LABEL_IMPLNULL); |
716 | return (MPLS_LABEL_IPV4NULL); | |
717 | case FEC_TYPE_IPV6: | |
718 | if (!(ldeconf->ipv6.flags & F_LDPD_AF_EXPNULL)) | |
719 | return (MPLS_LABEL_IMPLNULL); | |
720 | if (lde_acl_check(ldeconf->ipv6.acl_label_expnull_for, | |
8cb1fc45 RW |
721 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, |
722 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
723 | return (MPLS_LABEL_IMPLNULL); |
724 | return (MPLS_LABEL_IPV6NULL); | |
725 | default: | |
8cb1fc45 | 726 | fatalx("lde_update_label: unexpected fec type"); |
45a8eba9 RW |
727 | break; |
728 | } | |
729 | } | |
730 | ||
8cb1fc45 RW |
731 | /* preserve current label if there's no need to update it */ |
732 | if (fn->local_label != NO_LABEL && | |
733 | fn->local_label > MPLS_LABEL_RESERVED_MAX) | |
734 | return (fn->local_label); | |
735 | ||
fea12efb | 736 | return lde_get_next_label (); |
8429abe0 RW |
737 | } |
738 | ||
739 | void | |
740 | lde_send_change_klabel(struct fec_node *fn, struct fec_nh *fnh) | |
741 | { | |
49416a99 RW |
742 | struct kroute kr; |
743 | struct zapi_pw zpw; | |
8429abe0 RW |
744 | struct l2vpn_pw *pw; |
745 | ||
746 | switch (fn->fec.type) { | |
747 | case FEC_TYPE_IPV4: | |
748 | memset(&kr, 0, sizeof(kr)); | |
749 | kr.af = AF_INET; | |
750 | kr.prefix.v4 = fn->fec.u.ipv4.prefix; | |
751 | kr.prefixlen = fn->fec.u.ipv4.prefixlen; | |
752 | kr.nexthop.v4 = fnh->nexthop.v4; | |
88d88a9c | 753 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
754 | kr.local_label = fn->local_label; |
755 | kr.remote_label = fnh->remote_label; | |
756 | kr.priority = fnh->priority; | |
757 | ||
758 | lde_imsg_compose_parent(IMSG_KLABEL_CHANGE, 0, &kr, | |
759 | sizeof(kr)); | |
8429abe0 RW |
760 | break; |
761 | case FEC_TYPE_IPV6: | |
762 | memset(&kr, 0, sizeof(kr)); | |
763 | kr.af = AF_INET6; | |
764 | kr.prefix.v6 = fn->fec.u.ipv6.prefix; | |
765 | kr.prefixlen = fn->fec.u.ipv6.prefixlen; | |
766 | kr.nexthop.v6 = fnh->nexthop.v6; | |
88d88a9c | 767 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
768 | kr.local_label = fn->local_label; |
769 | kr.remote_label = fnh->remote_label; | |
770 | kr.priority = fnh->priority; | |
771 | ||
772 | lde_imsg_compose_parent(IMSG_KLABEL_CHANGE, 0, &kr, | |
773 | sizeof(kr)); | |
8429abe0 RW |
774 | break; |
775 | case FEC_TYPE_PWID: | |
776 | if (fn->local_label == NO_LABEL || | |
777 | fnh->remote_label == NO_LABEL) | |
778 | return; | |
779 | ||
780 | pw = (struct l2vpn_pw *) fn->data; | |
49416a99 RW |
781 | pw2zpw(pw, &zpw); |
782 | zpw.local_label = fn->local_label; | |
783 | zpw.remote_label = fnh->remote_label; | |
784 | lde_imsg_compose_parent(IMSG_KPW_SET, 0, &zpw, sizeof(zpw)); | |
8429abe0 RW |
785 | break; |
786 | } | |
787 | } | |
788 | ||
789 | void | |
790 | lde_send_delete_klabel(struct fec_node *fn, struct fec_nh *fnh) | |
791 | { | |
792 | struct kroute kr; | |
49416a99 | 793 | struct zapi_pw zpw; |
8429abe0 RW |
794 | struct l2vpn_pw *pw; |
795 | ||
796 | switch (fn->fec.type) { | |
797 | case FEC_TYPE_IPV4: | |
798 | memset(&kr, 0, sizeof(kr)); | |
799 | kr.af = AF_INET; | |
800 | kr.prefix.v4 = fn->fec.u.ipv4.prefix; | |
801 | kr.prefixlen = fn->fec.u.ipv4.prefixlen; | |
802 | kr.nexthop.v4 = fnh->nexthop.v4; | |
88d88a9c | 803 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
804 | kr.local_label = fn->local_label; |
805 | kr.remote_label = fnh->remote_label; | |
806 | kr.priority = fnh->priority; | |
807 | ||
808 | lde_imsg_compose_parent(IMSG_KLABEL_DELETE, 0, &kr, | |
809 | sizeof(kr)); | |
8429abe0 RW |
810 | break; |
811 | case FEC_TYPE_IPV6: | |
812 | memset(&kr, 0, sizeof(kr)); | |
813 | kr.af = AF_INET6; | |
814 | kr.prefix.v6 = fn->fec.u.ipv6.prefix; | |
815 | kr.prefixlen = fn->fec.u.ipv6.prefixlen; | |
816 | kr.nexthop.v6 = fnh->nexthop.v6; | |
88d88a9c | 817 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
818 | kr.local_label = fn->local_label; |
819 | kr.remote_label = fnh->remote_label; | |
820 | kr.priority = fnh->priority; | |
821 | ||
822 | lde_imsg_compose_parent(IMSG_KLABEL_DELETE, 0, &kr, | |
823 | sizeof(kr)); | |
8429abe0 RW |
824 | break; |
825 | case FEC_TYPE_PWID: | |
826 | pw = (struct l2vpn_pw *) fn->data; | |
49416a99 RW |
827 | pw2zpw(pw, &zpw); |
828 | zpw.local_label = fn->local_label; | |
829 | zpw.remote_label = fnh->remote_label; | |
830 | lde_imsg_compose_parent(IMSG_KPW_UNSET, 0, &zpw, sizeof(zpw)); | |
8429abe0 RW |
831 | break; |
832 | } | |
833 | } | |
834 | ||
835 | void | |
836 | lde_fec2map(struct fec *fec, struct map *map) | |
837 | { | |
838 | memset(map, 0, sizeof(*map)); | |
839 | ||
840 | switch (fec->type) { | |
841 | case FEC_TYPE_IPV4: | |
842 | map->type = MAP_TYPE_PREFIX; | |
843 | map->fec.prefix.af = AF_INET; | |
844 | map->fec.prefix.prefix.v4 = fec->u.ipv4.prefix; | |
845 | map->fec.prefix.prefixlen = fec->u.ipv4.prefixlen; | |
846 | break; | |
847 | case FEC_TYPE_IPV6: | |
848 | map->type = MAP_TYPE_PREFIX; | |
849 | map->fec.prefix.af = AF_INET6; | |
850 | map->fec.prefix.prefix.v6 = fec->u.ipv6.prefix; | |
851 | map->fec.prefix.prefixlen = fec->u.ipv6.prefixlen; | |
852 | break; | |
853 | case FEC_TYPE_PWID: | |
854 | map->type = MAP_TYPE_PWID; | |
855 | map->fec.pwid.type = fec->u.pwid.type; | |
856 | map->fec.pwid.group_id = 0; | |
857 | map->flags |= F_MAP_PW_ID; | |
858 | map->fec.pwid.pwid = fec->u.pwid.pwid; | |
859 | break; | |
860 | } | |
861 | } | |
862 | ||
863 | void | |
864 | lde_map2fec(struct map *map, struct in_addr lsr_id, struct fec *fec) | |
865 | { | |
866 | memset(fec, 0, sizeof(*fec)); | |
867 | ||
868 | switch (map->type) { | |
869 | case MAP_TYPE_PREFIX: | |
870 | switch (map->fec.prefix.af) { | |
871 | case AF_INET: | |
872 | fec->type = FEC_TYPE_IPV4; | |
873 | fec->u.ipv4.prefix = map->fec.prefix.prefix.v4; | |
874 | fec->u.ipv4.prefixlen = map->fec.prefix.prefixlen; | |
875 | break; | |
876 | case AF_INET6: | |
877 | fec->type = FEC_TYPE_IPV6; | |
878 | fec->u.ipv6.prefix = map->fec.prefix.prefix.v6; | |
879 | fec->u.ipv6.prefixlen = map->fec.prefix.prefixlen; | |
880 | break; | |
881 | default: | |
882 | fatalx("lde_map2fec: unknown af"); | |
883 | break; | |
884 | } | |
885 | break; | |
886 | case MAP_TYPE_PWID: | |
887 | fec->type = FEC_TYPE_PWID; | |
888 | fec->u.pwid.type = map->fec.pwid.type; | |
889 | fec->u.pwid.pwid = map->fec.pwid.pwid; | |
890 | fec->u.pwid.lsr_id = lsr_id; | |
891 | break; | |
892 | } | |
893 | } | |
894 | ||
895 | void | |
896 | lde_send_labelmapping(struct lde_nbr *ln, struct fec_node *fn, int single) | |
897 | { | |
abb16006 RW |
898 | struct lde_wdraw *lw; |
899 | struct lde_map *me; | |
900 | struct lde_req *lre; | |
901 | struct map map; | |
902 | struct l2vpn_pw *pw; | |
903 | ||
904 | /* | |
905 | * We shouldn't send a new label mapping if we have a pending | |
906 | * label release to receive. In this case, schedule to send a | |
907 | * label mapping as soon as a label release is received. | |
908 | */ | |
909 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, &fn->fec); | |
910 | if (lw) { | |
d807f1c3 RW |
911 | if (!fec_find(&ln->sent_map_pending, &fn->fec)) { |
912 | debug_evt("%s: FEC %s: scheduling to send label " | |
913 | "mapping later (waiting for pending label release)", | |
914 | __func__, log_fec(&fn->fec)); | |
abb16006 | 915 | lde_map_pending_add(ln, fn); |
d807f1c3 | 916 | } |
abb16006 RW |
917 | return; |
918 | } | |
8429abe0 RW |
919 | |
920 | /* | |
921 | * This function skips SL.1 - 3 and SL.9 - 14 because the label | |
922 | * allocation is done way earlier (because of the merging nature of | |
923 | * ldpd). | |
924 | */ | |
925 | ||
926 | lde_fec2map(&fn->fec, &map); | |
927 | switch (fn->fec.type) { | |
928 | case FEC_TYPE_IPV4: | |
929 | if (!ln->v4_enabled) | |
930 | return; | |
45a8eba9 RW |
931 | if (lde_acl_check(ldeconf->ipv4.acl_label_advertise_to, |
932 | AF_INET, (union ldpd_addr *)&ln->id, 32) != FILTER_PERMIT) | |
933 | return; | |
934 | if (lde_acl_check(ldeconf->ipv4.acl_label_advertise_for, | |
935 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, | |
936 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
937 | return; | |
8429abe0 RW |
938 | break; |
939 | case FEC_TYPE_IPV6: | |
940 | if (!ln->v6_enabled) | |
941 | return; | |
45a8eba9 RW |
942 | if (lde_acl_check(ldeconf->ipv6.acl_label_advertise_to, |
943 | AF_INET, (union ldpd_addr *)&ln->id, 32) != FILTER_PERMIT) | |
944 | return; | |
945 | if (lde_acl_check(ldeconf->ipv6.acl_label_advertise_for, | |
946 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, | |
947 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
948 | return; | |
8429abe0 RW |
949 | break; |
950 | case FEC_TYPE_PWID: | |
951 | pw = (struct l2vpn_pw *) fn->data; | |
952 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
953 | /* not the remote end of the pseudowire */ | |
954 | return; | |
955 | ||
956 | map.flags |= F_MAP_PW_IFMTU; | |
957 | map.fec.pwid.ifmtu = pw->l2vpn->mtu; | |
958 | if (pw->flags & F_PW_CWORD) | |
959 | map.flags |= F_MAP_PW_CWORD; | |
960 | if (pw->flags & F_PW_STATUSTLV) { | |
961 | map.flags |= F_MAP_PW_STATUS; | |
49416a99 | 962 | map.pw_status = pw->local_status; |
8429abe0 RW |
963 | } |
964 | break; | |
965 | } | |
966 | map.label = fn->local_label; | |
967 | ||
968 | /* SL.6: is there a pending request for this mapping? */ | |
969 | lre = (struct lde_req *)fec_find(&ln->recv_req, &fn->fec); | |
970 | if (lre) { | |
971 | /* set label request msg id in the mapping response. */ | |
972 | map.requestid = lre->msg_id; | |
973 | map.flags = F_MAP_REQ_ID; | |
974 | ||
975 | /* SL.7: delete record of pending request */ | |
976 | lde_req_del(ln, lre, 0); | |
977 | } | |
978 | ||
979 | /* SL.4: send label mapping */ | |
980 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD, ln->peerid, 0, | |
981 | &map, sizeof(map)); | |
982 | if (single) | |
983 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, | |
984 | NULL, 0); | |
985 | ||
986 | /* SL.5: record sent label mapping */ | |
987 | me = (struct lde_map *)fec_find(&ln->sent_map, &fn->fec); | |
988 | if (me == NULL) | |
989 | me = lde_map_add(ln, fn, 1); | |
990 | me->map = map; | |
991 | } | |
992 | ||
993 | void | |
0bcc2916 RW |
994 | lde_send_labelwithdraw(struct lde_nbr *ln, struct fec_node *fn, |
995 | struct map *wcard, struct status_tlv *st) | |
8429abe0 RW |
996 | { |
997 | struct lde_wdraw *lw; | |
998 | struct map map; | |
999 | struct fec *f; | |
1000 | struct l2vpn_pw *pw; | |
1001 | ||
1002 | if (fn) { | |
1003 | lde_fec2map(&fn->fec, &map); | |
1004 | switch (fn->fec.type) { | |
1005 | case FEC_TYPE_IPV4: | |
1006 | if (!ln->v4_enabled) | |
1007 | return; | |
1008 | break; | |
1009 | case FEC_TYPE_IPV6: | |
1010 | if (!ln->v6_enabled) | |
1011 | return; | |
1012 | break; | |
1013 | case FEC_TYPE_PWID: | |
1014 | pw = (struct l2vpn_pw *) fn->data; | |
1015 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1016 | /* not the remote end of the pseudowire */ | |
1017 | return; | |
1018 | ||
1019 | if (pw->flags & F_PW_CWORD) | |
1020 | map.flags |= F_MAP_PW_CWORD; | |
1021 | break; | |
1022 | } | |
1023 | map.label = fn->local_label; | |
0bcc2916 RW |
1024 | } else |
1025 | memcpy(&map, wcard, sizeof(map)); | |
8429abe0 RW |
1026 | |
1027 | if (st) { | |
1028 | map.st.status_code = st->status_code; | |
1029 | map.st.msg_id = st->msg_id; | |
1030 | map.st.msg_type = st->msg_type; | |
1031 | map.flags |= F_MAP_STATUS; | |
1032 | } | |
1033 | ||
1034 | /* SWd.1: send label withdraw. */ | |
1035 | lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD, ln->peerid, 0, | |
1036 | &map, sizeof(map)); | |
1037 | lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD_END, ln->peerid, 0, NULL, 0); | |
1038 | ||
1039 | /* SWd.2: record label withdraw. */ | |
1040 | if (fn) { | |
1041 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, &fn->fec); | |
1042 | if (lw == NULL) | |
1043 | lw = lde_wdraw_add(ln, fn); | |
1044 | lw->label = map.label; | |
1045 | } else { | |
0bcc2916 RW |
1046 | struct lde_map *me; |
1047 | ||
8429abe0 RW |
1048 | RB_FOREACH(f, fec_tree, &ft) { |
1049 | fn = (struct fec_node *)f; | |
0bcc2916 RW |
1050 | me = (struct lde_map *)fec_find(&ln->sent_map, &fn->fec); |
1051 | if (lde_wildcard_apply(wcard, &fn->fec, me) == 0) | |
1052 | continue; | |
8429abe0 RW |
1053 | |
1054 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, | |
1055 | &fn->fec); | |
1056 | if (lw == NULL) | |
1057 | lw = lde_wdraw_add(ln, fn); | |
1058 | lw->label = map.label; | |
1059 | } | |
1060 | } | |
1061 | } | |
1062 | ||
1063 | void | |
0bcc2916 | 1064 | lde_send_labelwithdraw_wcard(struct lde_nbr *ln, uint32_t label) |
8429abe0 | 1065 | { |
0bcc2916 | 1066 | struct map wcard; |
8429abe0 | 1067 | |
0bcc2916 RW |
1068 | memset(&wcard, 0, sizeof(wcard)); |
1069 | wcard.type = MAP_TYPE_WILDCARD; | |
1070 | wcard.label = label; | |
1071 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
8429abe0 RW |
1072 | } |
1073 | ||
d4afb819 RW |
1074 | void |
1075 | lde_send_labelwithdraw_twcard_prefix(struct lde_nbr *ln, uint16_t af, | |
1076 | uint32_t label) | |
1077 | { | |
1078 | struct map wcard; | |
1079 | ||
1080 | memset(&wcard, 0, sizeof(wcard)); | |
1081 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1082 | wcard.fec.twcard.type = MAP_TYPE_PREFIX; | |
1083 | wcard.fec.twcard.u.prefix_af = af; | |
1084 | wcard.label = label; | |
1085 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1086 | } | |
1087 | ||
aba50a83 RW |
1088 | void |
1089 | lde_send_labelwithdraw_twcard_pwid(struct lde_nbr *ln, uint16_t pw_type, | |
1090 | uint32_t label) | |
1091 | { | |
1092 | struct map wcard; | |
1093 | ||
1094 | memset(&wcard, 0, sizeof(wcard)); | |
1095 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1096 | wcard.fec.twcard.type = MAP_TYPE_PWID; | |
1097 | wcard.fec.twcard.u.pw_type = pw_type; | |
1098 | wcard.label = label; | |
1099 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1100 | } | |
1101 | ||
8429abe0 | 1102 | void |
0bcc2916 RW |
1103 | lde_send_labelwithdraw_pwid_wcard(struct lde_nbr *ln, uint16_t pw_type, |
1104 | uint32_t group_id) | |
1105 | { | |
1106 | struct map wcard; | |
1107 | ||
1108 | memset(&wcard, 0, sizeof(wcard)); | |
1109 | wcard.type = MAP_TYPE_PWID; | |
1110 | wcard.fec.pwid.type = pw_type; | |
1111 | wcard.fec.pwid.group_id = group_id; | |
1112 | /* we can not append a Label TLV when using PWid group wildcards. */ | |
1113 | wcard.label = NO_LABEL; | |
1114 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1115 | } | |
1116 | ||
1117 | void | |
1118 | lde_send_labelrelease(struct lde_nbr *ln, struct fec_node *fn, | |
1119 | struct map *wcard, uint32_t label) | |
8429abe0 RW |
1120 | { |
1121 | struct map map; | |
1122 | struct l2vpn_pw *pw; | |
1123 | ||
1124 | if (fn) { | |
1125 | lde_fec2map(&fn->fec, &map); | |
1126 | switch (fn->fec.type) { | |
1127 | case FEC_TYPE_IPV4: | |
1128 | if (!ln->v4_enabled) | |
1129 | return; | |
1130 | break; | |
1131 | case FEC_TYPE_IPV6: | |
1132 | if (!ln->v6_enabled) | |
1133 | return; | |
1134 | break; | |
1135 | case FEC_TYPE_PWID: | |
1136 | pw = (struct l2vpn_pw *) fn->data; | |
1137 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1138 | /* not the remote end of the pseudowire */ | |
1139 | return; | |
1140 | ||
1141 | if (pw->flags & F_PW_CWORD) | |
1142 | map.flags |= F_MAP_PW_CWORD; | |
1143 | break; | |
1144 | } | |
0bcc2916 RW |
1145 | } else |
1146 | memcpy(&map, wcard, sizeof(map)); | |
8429abe0 RW |
1147 | map.label = label; |
1148 | ||
1149 | lde_imsg_compose_ldpe(IMSG_RELEASE_ADD, ln->peerid, 0, | |
1150 | &map, sizeof(map)); | |
1151 | lde_imsg_compose_ldpe(IMSG_RELEASE_ADD_END, ln->peerid, 0, NULL, 0); | |
1152 | } | |
1153 | ||
1154 | void | |
05aac414 | 1155 | lde_send_notification(struct lde_nbr *ln, uint32_t status_code, uint32_t msg_id, |
8429abe0 RW |
1156 | uint16_t msg_type) |
1157 | { | |
1158 | struct notify_msg nm; | |
1159 | ||
1160 | memset(&nm, 0, sizeof(nm)); | |
1161 | nm.status_code = status_code; | |
1162 | /* 'msg_id' and 'msg_type' should be in network byte order */ | |
1163 | nm.msg_id = msg_id; | |
1164 | nm.msg_type = msg_type; | |
1165 | ||
05aac414 | 1166 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, |
8429abe0 RW |
1167 | &nm, sizeof(nm)); |
1168 | } | |
1169 | ||
257799cd RW |
1170 | void |
1171 | lde_send_notification_eol_prefix(struct lde_nbr *ln, int af) | |
1172 | { | |
1173 | struct notify_msg nm; | |
1174 | ||
1175 | memset(&nm, 0, sizeof(nm)); | |
1176 | nm.status_code = S_ENDOFLIB; | |
1177 | nm.fec.type = MAP_TYPE_TYPED_WCARD; | |
1178 | nm.fec.fec.twcard.type = MAP_TYPE_PREFIX; | |
1179 | nm.fec.fec.twcard.u.prefix_af = af; | |
1180 | nm.flags |= F_NOTIF_FEC; | |
1181 | ||
1182 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, | |
1183 | &nm, sizeof(nm)); | |
1184 | } | |
1185 | ||
1186 | void | |
1187 | lde_send_notification_eol_pwid(struct lde_nbr *ln, uint16_t pw_type) | |
1188 | { | |
1189 | struct notify_msg nm; | |
1190 | ||
1191 | memset(&nm, 0, sizeof(nm)); | |
1192 | nm.status_code = S_ENDOFLIB; | |
1193 | nm.fec.type = MAP_TYPE_TYPED_WCARD; | |
1194 | nm.fec.fec.twcard.type = MAP_TYPE_PWID; | |
1195 | nm.fec.fec.twcard.u.pw_type = pw_type; | |
1196 | nm.flags |= F_NOTIF_FEC; | |
1197 | ||
1198 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, | |
1199 | &nm, sizeof(nm)); | |
1200 | } | |
1201 | ||
8429abe0 RW |
1202 | static __inline int |
1203 | lde_nbr_compare(struct lde_nbr *a, struct lde_nbr *b) | |
1204 | { | |
1205 | return (a->peerid - b->peerid); | |
1206 | } | |
1207 | ||
1208 | static struct lde_nbr * | |
1209 | lde_nbr_new(uint32_t peerid, struct lde_nbr *new) | |
1210 | { | |
1211 | struct lde_nbr *ln; | |
1212 | ||
1213 | if ((ln = calloc(1, sizeof(*ln))) == NULL) | |
1214 | fatal(__func__); | |
1215 | ||
1216 | ln->id = new->id; | |
1217 | ln->v4_enabled = new->v4_enabled; | |
1218 | ln->v6_enabled = new->v6_enabled; | |
257799cd | 1219 | ln->flags = new->flags; |
8429abe0 RW |
1220 | ln->peerid = peerid; |
1221 | fec_init(&ln->recv_map); | |
1222 | fec_init(&ln->sent_map); | |
abb16006 | 1223 | fec_init(&ln->sent_map_pending); |
8429abe0 RW |
1224 | fec_init(&ln->recv_req); |
1225 | fec_init(&ln->sent_req); | |
1226 | fec_init(&ln->sent_wdraw); | |
1227 | ||
1228 | TAILQ_INIT(&ln->addr_list); | |
1229 | ||
1230 | if (RB_INSERT(nbr_tree, &lde_nbrs, ln) != NULL) | |
1231 | fatalx("lde_nbr_new: RB_INSERT failed"); | |
1232 | ||
1233 | return (ln); | |
1234 | } | |
1235 | ||
1236 | static void | |
1237 | lde_nbr_del(struct lde_nbr *ln) | |
1238 | { | |
1239 | struct fec *f; | |
1240 | struct fec_node *fn; | |
1241 | struct fec_nh *fnh; | |
1242 | struct l2vpn_pw *pw; | |
1243 | ||
1244 | if (ln == NULL) | |
1245 | return; | |
1246 | ||
1247 | /* uninstall received mappings */ | |
1248 | RB_FOREACH(f, fec_tree, &ft) { | |
1249 | fn = (struct fec_node *)f; | |
1250 | ||
1251 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
1252 | switch (f->type) { | |
1253 | case FEC_TYPE_IPV4: | |
1254 | case FEC_TYPE_IPV6: | |
1255 | if (!lde_address_find(ln, fnh->af, | |
1256 | &fnh->nexthop)) | |
1257 | continue; | |
1258 | break; | |
1259 | case FEC_TYPE_PWID: | |
1260 | if (f->u.pwid.lsr_id.s_addr != ln->id.s_addr) | |
1261 | continue; | |
1262 | pw = (struct l2vpn_pw *) fn->data; | |
1263 | if (pw) | |
1264 | l2vpn_pw_reset(pw); | |
1265 | break; | |
1266 | default: | |
1267 | break; | |
1268 | } | |
1269 | ||
1270 | lde_send_delete_klabel(fn, fnh); | |
1271 | fnh->remote_label = NO_LABEL; | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | lde_address_list_free(ln); | |
1276 | ||
1277 | fec_clear(&ln->recv_map, lde_map_free); | |
1278 | fec_clear(&ln->sent_map, lde_map_free); | |
abb16006 | 1279 | fec_clear(&ln->sent_map_pending, free); |
8429abe0 RW |
1280 | fec_clear(&ln->recv_req, free); |
1281 | fec_clear(&ln->sent_req, free); | |
1282 | fec_clear(&ln->sent_wdraw, free); | |
1283 | ||
1284 | RB_REMOVE(nbr_tree, &lde_nbrs, ln); | |
1285 | ||
1286 | free(ln); | |
1287 | } | |
1288 | ||
1289 | static struct lde_nbr * | |
1290 | lde_nbr_find(uint32_t peerid) | |
1291 | { | |
1292 | struct lde_nbr ln; | |
1293 | ||
1294 | ln.peerid = peerid; | |
1295 | ||
1296 | return (RB_FIND(nbr_tree, &lde_nbrs, &ln)); | |
1297 | } | |
1298 | ||
1299 | struct lde_nbr * | |
1300 | lde_nbr_find_by_lsrid(struct in_addr addr) | |
1301 | { | |
1302 | struct lde_nbr *ln; | |
1303 | ||
1304 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1305 | if (ln->id.s_addr == addr.s_addr) | |
1306 | return (ln); | |
1307 | ||
1308 | return (NULL); | |
1309 | } | |
1310 | ||
1311 | struct lde_nbr * | |
1312 | lde_nbr_find_by_addr(int af, union ldpd_addr *addr) | |
1313 | { | |
1314 | struct lde_nbr *ln; | |
1315 | ||
1316 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1317 | if (lde_address_find(ln, af, addr) != NULL) | |
1318 | return (ln); | |
1319 | ||
1320 | return (NULL); | |
1321 | } | |
1322 | ||
1323 | static void | |
1324 | lde_nbr_clear(void) | |
1325 | { | |
1326 | struct lde_nbr *ln; | |
1327 | ||
1328 | while ((ln = RB_ROOT(&lde_nbrs)) != NULL) | |
1329 | lde_nbr_del(ln); | |
1330 | } | |
1331 | ||
1332 | static void | |
1333 | lde_nbr_addr_update(struct lde_nbr *ln, struct lde_addr *lde_addr, int removed) | |
1334 | { | |
1335 | struct fec *fec; | |
1336 | struct fec_node *fn; | |
1337 | struct fec_nh *fnh; | |
1338 | struct lde_map *me; | |
1339 | ||
1340 | RB_FOREACH(fec, fec_tree, &ln->recv_map) { | |
1341 | fn = (struct fec_node *)fec_find(&ft, fec); | |
1342 | switch (fec->type) { | |
1343 | case FEC_TYPE_IPV4: | |
1344 | if (lde_addr->af != AF_INET) | |
1345 | continue; | |
1346 | break; | |
1347 | case FEC_TYPE_IPV6: | |
1348 | if (lde_addr->af != AF_INET6) | |
1349 | continue; | |
1350 | break; | |
1351 | default: | |
1352 | continue; | |
1353 | } | |
1354 | ||
1355 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
1356 | if (ldp_addrcmp(fnh->af, &fnh->nexthop, | |
1357 | &lde_addr->addr)) | |
1358 | continue; | |
1359 | ||
1360 | if (removed) { | |
1361 | lde_send_delete_klabel(fn, fnh); | |
1362 | fnh->remote_label = NO_LABEL; | |
1363 | } else { | |
1364 | me = (struct lde_map *)fec; | |
1365 | fnh->remote_label = me->map.label; | |
1366 | lde_send_change_klabel(fn, fnh); | |
1367 | } | |
1368 | break; | |
1369 | } | |
1370 | } | |
1371 | } | |
1372 | ||
d3e1887a RW |
1373 | static __inline int |
1374 | lde_map_compare(struct lde_map *a, struct lde_map *b) | |
1375 | { | |
1376 | return (ldp_addrcmp(AF_INET, (union ldpd_addr *)&a->nexthop->id, | |
1377 | (union ldpd_addr *)&b->nexthop->id)); | |
1378 | } | |
1379 | ||
8429abe0 RW |
1380 | struct lde_map * |
1381 | lde_map_add(struct lde_nbr *ln, struct fec_node *fn, int sent) | |
1382 | { | |
1383 | struct lde_map *me; | |
1384 | ||
1385 | me = calloc(1, sizeof(*me)); | |
1386 | if (me == NULL) | |
1387 | fatal(__func__); | |
1388 | ||
1389 | me->fec = fn->fec; | |
1390 | me->nexthop = ln; | |
1391 | ||
1392 | if (sent) { | |
d3e1887a RW |
1393 | RB_INSERT(lde_map_head, &fn->upstream, me); |
1394 | me->head = &fn->upstream; | |
8429abe0 RW |
1395 | if (fec_insert(&ln->sent_map, &me->fec)) |
1396 | log_warnx("failed to add %s to sent map", | |
1397 | log_fec(&me->fec)); | |
1398 | /* XXX on failure more cleanup is needed */ | |
1399 | } else { | |
d3e1887a RW |
1400 | RB_INSERT(lde_map_head, &fn->downstream, me); |
1401 | me->head = &fn->downstream; | |
8429abe0 RW |
1402 | if (fec_insert(&ln->recv_map, &me->fec)) |
1403 | log_warnx("failed to add %s to recv map", | |
1404 | log_fec(&me->fec)); | |
1405 | } | |
1406 | ||
1407 | return (me); | |
1408 | } | |
1409 | ||
1410 | void | |
1411 | lde_map_del(struct lde_nbr *ln, struct lde_map *me, int sent) | |
1412 | { | |
1413 | if (sent) | |
1414 | fec_remove(&ln->sent_map, &me->fec); | |
1415 | else | |
1416 | fec_remove(&ln->recv_map, &me->fec); | |
1417 | ||
1418 | lde_map_free(me); | |
1419 | } | |
1420 | ||
1421 | static void | |
1422 | lde_map_free(void *ptr) | |
1423 | { | |
1424 | struct lde_map *map = ptr; | |
1425 | ||
d3e1887a | 1426 | RB_REMOVE(lde_map_head, map->head, map); |
8429abe0 RW |
1427 | free(map); |
1428 | } | |
1429 | ||
abb16006 RW |
1430 | struct fec * |
1431 | lde_map_pending_add(struct lde_nbr *ln, struct fec_node *fn) | |
1432 | { | |
1433 | struct fec *map; | |
1434 | ||
1435 | map = calloc(1, sizeof(*map)); | |
1436 | if (map == NULL) | |
1437 | fatal(__func__); | |
1438 | ||
1439 | *map = fn->fec; | |
1440 | if (fec_insert(&ln->sent_map_pending, map)) | |
1441 | log_warnx("failed to add %s to sent map (pending)", | |
1442 | log_fec(map)); | |
1443 | ||
1444 | return (map); | |
1445 | } | |
1446 | ||
1447 | void | |
1448 | lde_map_pending_del(struct lde_nbr *ln, struct fec *map) | |
1449 | { | |
1450 | fec_remove(&ln->sent_map_pending, map); | |
1451 | free(map); | |
1452 | } | |
1453 | ||
8429abe0 RW |
1454 | struct lde_req * |
1455 | lde_req_add(struct lde_nbr *ln, struct fec *fec, int sent) | |
1456 | { | |
1457 | struct fec_tree *t; | |
1458 | struct lde_req *lre; | |
1459 | ||
1460 | t = sent ? &ln->sent_req : &ln->recv_req; | |
1461 | ||
1462 | lre = calloc(1, sizeof(*lre)); | |
1463 | if (lre != NULL) { | |
1464 | lre->fec = *fec; | |
1465 | ||
1466 | if (fec_insert(t, &lre->fec)) { | |
1467 | log_warnx("failed to add %s to %s req", | |
1468 | log_fec(&lre->fec), sent ? "sent" : "recv"); | |
1469 | free(lre); | |
1470 | return (NULL); | |
1471 | } | |
1472 | } | |
1473 | ||
1474 | return (lre); | |
1475 | } | |
1476 | ||
1477 | void | |
1478 | lde_req_del(struct lde_nbr *ln, struct lde_req *lre, int sent) | |
1479 | { | |
1480 | if (sent) | |
1481 | fec_remove(&ln->sent_req, &lre->fec); | |
1482 | else | |
1483 | fec_remove(&ln->recv_req, &lre->fec); | |
1484 | ||
1485 | free(lre); | |
1486 | } | |
1487 | ||
1488 | struct lde_wdraw * | |
1489 | lde_wdraw_add(struct lde_nbr *ln, struct fec_node *fn) | |
1490 | { | |
1491 | struct lde_wdraw *lw; | |
1492 | ||
1493 | lw = calloc(1, sizeof(*lw)); | |
1494 | if (lw == NULL) | |
1495 | fatal(__func__); | |
1496 | ||
1497 | lw->fec = fn->fec; | |
1498 | ||
1499 | if (fec_insert(&ln->sent_wdraw, &lw->fec)) | |
1500 | log_warnx("failed to add %s to sent wdraw", | |
1501 | log_fec(&lw->fec)); | |
1502 | ||
1503 | return (lw); | |
1504 | } | |
1505 | ||
1506 | void | |
1507 | lde_wdraw_del(struct lde_nbr *ln, struct lde_wdraw *lw) | |
1508 | { | |
1509 | fec_remove(&ln->sent_wdraw, &lw->fec); | |
1510 | free(lw); | |
1511 | } | |
1512 | ||
1513 | void | |
45a8eba9 | 1514 | lde_change_egress_label(int af) |
8429abe0 RW |
1515 | { |
1516 | struct lde_nbr *ln; | |
1517 | struct fec *f; | |
1518 | struct fec_node *fn; | |
1519 | ||
be54d744 | 1520 | /* explicitly withdraw all null labels */ |
8429abe0 | 1521 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) { |
0bcc2916 | 1522 | lde_send_labelwithdraw_wcard(ln, MPLS_LABEL_IMPLNULL); |
45a8eba9 | 1523 | if (ln->v4_enabled) |
0bcc2916 | 1524 | lde_send_labelwithdraw_wcard(ln, MPLS_LABEL_IPV4NULL); |
45a8eba9 | 1525 | if (ln->v6_enabled) |
0bcc2916 | 1526 | lde_send_labelwithdraw_wcard(ln, MPLS_LABEL_IPV6NULL); |
be54d744 | 1527 | } |
8429abe0 | 1528 | |
be54d744 RW |
1529 | /* update label of connected routes */ |
1530 | RB_FOREACH(f, fec_tree, &ft) { | |
1531 | fn = (struct fec_node *)f; | |
1532 | if (fn->local_label > MPLS_LABEL_RESERVED_MAX) | |
1533 | continue; | |
8429abe0 | 1534 | |
be54d744 RW |
1535 | switch (af) { |
1536 | case AF_INET: | |
1537 | if (fn->fec.type != FEC_TYPE_IPV4) | |
1538 | continue; | |
1539 | break; | |
1540 | case AF_INET6: | |
1541 | if (fn->fec.type != FEC_TYPE_IPV6) | |
1542 | continue; | |
1543 | break; | |
1544 | default: | |
1545 | fatalx("lde_change_egress_label: unknown af"); | |
8429abe0 RW |
1546 | } |
1547 | ||
8cb1fc45 | 1548 | fn->local_label = lde_update_label(fn); |
45a8eba9 RW |
1549 | if (fn->local_label != NO_LABEL) |
1550 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1551 | lde_send_labelmapping(ln, fn, 0); | |
be54d744 RW |
1552 | } |
1553 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
8429abe0 RW |
1554 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, |
1555 | NULL, 0); | |
8429abe0 RW |
1556 | } |
1557 | ||
1558 | static int | |
1559 | lde_address_add(struct lde_nbr *ln, struct lde_addr *lde_addr) | |
1560 | { | |
1561 | struct lde_addr *new; | |
1562 | ||
1563 | if (lde_address_find(ln, lde_addr->af, &lde_addr->addr) != NULL) | |
1564 | return (-1); | |
1565 | ||
1566 | if ((new = calloc(1, sizeof(*new))) == NULL) | |
1567 | fatal(__func__); | |
1568 | ||
1569 | new->af = lde_addr->af; | |
1570 | new->addr = lde_addr->addr; | |
1571 | TAILQ_INSERT_TAIL(&ln->addr_list, new, entry); | |
1572 | ||
1573 | /* reevaluate the previously received mappings from this neighbor */ | |
1574 | lde_nbr_addr_update(ln, lde_addr, 0); | |
1575 | ||
1576 | return (0); | |
1577 | } | |
1578 | ||
1579 | static int | |
1580 | lde_address_del(struct lde_nbr *ln, struct lde_addr *lde_addr) | |
1581 | { | |
1582 | lde_addr = lde_address_find(ln, lde_addr->af, &lde_addr->addr); | |
1583 | if (lde_addr == NULL) | |
1584 | return (-1); | |
1585 | ||
1586 | /* reevaluate the previously received mappings from this neighbor */ | |
1587 | lde_nbr_addr_update(ln, lde_addr, 1); | |
1588 | ||
1589 | TAILQ_REMOVE(&ln->addr_list, lde_addr, entry); | |
1590 | free(lde_addr); | |
1591 | ||
1592 | return (0); | |
1593 | } | |
1594 | ||
1595 | struct lde_addr * | |
1596 | lde_address_find(struct lde_nbr *ln, int af, union ldpd_addr *addr) | |
1597 | { | |
1598 | struct lde_addr *lde_addr; | |
1599 | ||
1600 | TAILQ_FOREACH(lde_addr, &ln->addr_list, entry) | |
1601 | if (lde_addr->af == af && | |
1602 | ldp_addrcmp(af, &lde_addr->addr, addr) == 0) | |
1603 | return (lde_addr); | |
1604 | ||
1605 | return (NULL); | |
1606 | } | |
1607 | ||
1608 | static void | |
1609 | lde_address_list_free(struct lde_nbr *ln) | |
1610 | { | |
1611 | struct lde_addr *lde_addr; | |
1612 | ||
1613 | while ((lde_addr = TAILQ_FIRST(&ln->addr_list)) != NULL) { | |
1614 | TAILQ_REMOVE(&ln->addr_list, lde_addr, entry); | |
1615 | free(lde_addr); | |
1616 | } | |
1617 | } | |
fea12efb | 1618 | |
1619 | static void | |
1620 | lde_del_label_chunk(void *val) | |
1621 | { | |
1622 | free(val); | |
1623 | } | |
1624 | static int | |
1625 | lde_get_label_chunk(void) | |
1626 | { | |
1627 | int ret; | |
1628 | uint32_t start, end; | |
1629 | ||
1630 | log_debug("Getting label chunk"); | |
1631 | ret = lm_get_label_chunk(zclient_sync, 0, CHUNK_SIZE, &start, &end); | |
1632 | if (ret < 0) | |
1633 | { | |
1634 | log_warnx("Error getting label chunk!"); | |
fea12efb | 1635 | return -1; |
1636 | } | |
1637 | ||
1638 | on_get_label_chunk_response(start, end); | |
1639 | ||
1640 | return 0; | |
1641 | } | |
1642 | static void | |
1643 | lde_label_list_init(void) | |
1644 | { | |
1645 | label_chunk_list = list_new(); | |
1646 | label_chunk_list->del = lde_del_label_chunk; | |
1647 | ||
1648 | /* get first chunk */ | |
73be9aeb | 1649 | while (lde_get_label_chunk () != 0) { |
d8292558 | 1650 | log_warnx("Error getting first label chunk!"); |
30f35e85 | 1651 | sleep(1); |
fea12efb | 1652 | } |
1653 | } | |
1654 | ||
1655 | static void | |
1656 | on_get_label_chunk_response(uint32_t start, uint32_t end) | |
1657 | { | |
1658 | struct label_chunk *new_label_chunk; | |
1659 | ||
1660 | log_debug("Label Chunk assign: %u - %u", start, end); | |
1661 | ||
1662 | new_label_chunk = calloc(1, sizeof(struct label_chunk)); | |
66749b59 | 1663 | if (!new_label_chunk) { |
1664 | log_warn("Error trying to allocate label chunk %u - %u", start, end); | |
1665 | return; | |
1666 | } | |
fea12efb | 1667 | |
1668 | new_label_chunk->start = start; | |
1669 | new_label_chunk->end = end; | |
1670 | new_label_chunk->used_mask = 0; | |
1671 | ||
1672 | listnode_add(label_chunk_list, (void *)new_label_chunk); | |
1673 | ||
1674 | /* let's update current if needed */ | |
1675 | if (!current_label_chunk) | |
1676 | current_label_chunk = listtail(label_chunk_list); | |
1677 | } | |
1678 | ||
1679 | static uint32_t | |
1680 | lde_get_next_label(void) | |
1681 | { | |
1682 | struct label_chunk *label_chunk; | |
2d67d5a2 RW |
1683 | uint32_t i, size; |
1684 | uint64_t pos; | |
fea12efb | 1685 | uint32_t label = NO_LABEL; |
1686 | ||
1687 | while (current_label_chunk) { | |
1688 | label_chunk = listgetdata(current_label_chunk); | |
1689 | if (!label_chunk) | |
1690 | goto end; | |
1691 | ||
1692 | /* try to get next free label in currently used label chunk */ | |
1693 | size = label_chunk->end - label_chunk->start + 1; | |
1694 | for (i = 0, pos = 1; i < size; i++, pos <<= 1) { | |
1695 | if (!(pos & label_chunk->used_mask)) { | |
1696 | label_chunk->used_mask |= pos; | |
1697 | label = label_chunk->start + i; | |
1698 | goto end; | |
1699 | } | |
1700 | } | |
1701 | current_label_chunk = listnextnode(current_label_chunk); | |
1702 | } | |
1703 | ||
1704 | end: | |
1705 | /* we moved till the last chunk, or were not able to find a label, | |
1706 | so let's ask for another one */ | |
1707 | if (!current_label_chunk || current_label_chunk == listtail(label_chunk_list) | |
1708 | || label == NO_LABEL) { | |
1709 | if (lde_get_label_chunk() != 0) | |
1710 | log_warn("%s: Error getting label chunk!", __func__); | |
1711 | ||
1712 | } | |
1713 | ||
0d12df4a | 1714 | return label; |
fea12efb | 1715 | } |