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Commit | Line | Data |
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8429abe0 RW |
1 | /* $OpenBSD$ */ |
2 | ||
3 | /* | |
4 | * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org> | |
5 | * Copyright (c) 2004, 2005 Claudio Jeker <claudio@openbsd.org> | |
6 | * Copyright (c) 2004 Esben Norby <norby@openbsd.org> | |
7 | * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> | |
8 | * | |
9 | * Permission to use, copy, modify, and distribute this software for any | |
10 | * purpose with or without fee is hereby granted, provided that the above | |
11 | * copyright notice and this permission notice appear in all copies. | |
12 | * | |
13 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
14 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
15 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
16 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
17 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
19 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
20 | */ | |
21 | ||
eac6e3f0 | 22 | #include <zebra.h> |
8429abe0 RW |
23 | |
24 | #include "ldp.h" | |
25 | #include "ldpd.h" | |
26 | #include "ldpe.h" | |
27 | #include "log.h" | |
28 | #include "lde.h" | |
eac6e3f0 | 29 | #include "ldp_debug.h" |
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" | |
689f5a8c | 40 | #include "libfrr.h" |
eac6e3f0 RW |
41 | |
42 | static void lde_shutdown(void); | |
43 | static int lde_dispatch_imsg(struct thread *); | |
44 | static int lde_dispatch_parent(struct thread *); | |
45926e58 RZ |
45 | static __inline int lde_nbr_compare(const struct lde_nbr *, |
46 | const struct lde_nbr *); | |
8429abe0 RW |
47 | static struct lde_nbr *lde_nbr_new(uint32_t, struct lde_nbr *); |
48 | static void lde_nbr_del(struct lde_nbr *); | |
49 | static struct lde_nbr *lde_nbr_find(uint32_t); | |
50 | static void lde_nbr_clear(void); | |
51 | static void lde_nbr_addr_update(struct lde_nbr *, | |
52 | struct lde_addr *, int); | |
45926e58 RZ |
53 | static __inline int lde_map_compare(const struct lde_map *, |
54 | const struct lde_map *); | |
8429abe0 RW |
55 | static void lde_map_free(void *); |
56 | static int lde_address_add(struct lde_nbr *, struct lde_addr *); | |
57 | static int lde_address_del(struct lde_nbr *, struct lde_addr *); | |
58 | static void lde_address_list_free(struct lde_nbr *); | |
d7c0a89a | 59 | static void zclient_sync_init(unsigned short instance); |
fea12efb | 60 | static void lde_label_list_init(void); |
5afba51d | 61 | static int lde_get_label_chunk(void); |
fea12efb | 62 | static void on_get_label_chunk_response(uint32_t start, uint32_t end); |
63 | static uint32_t lde_get_next_label(void); | |
8429abe0 RW |
64 | |
65 | RB_GENERATE(nbr_tree, lde_nbr, entry, lde_nbr_compare) | |
d3e1887a | 66 | RB_GENERATE(lde_map_head, lde_map, entry, lde_map_compare) |
8429abe0 RW |
67 | |
68 | struct ldpd_conf *ldeconf; | |
69 | struct nbr_tree lde_nbrs = RB_INITIALIZER(&lde_nbrs); | |
70 | ||
71 | static struct imsgev *iev_ldpe; | |
28e8294c | 72 | static struct imsgev *iev_main, *iev_main_sync; |
8429abe0 | 73 | |
eac6e3f0 RW |
74 | /* Master of threads. */ |
75 | struct thread_master *master; | |
76 | ||
77 | /* lde privileges */ | |
78 | static zebra_capabilities_t _caps_p [] = | |
8429abe0 | 79 | { |
342213ea | 80 | ZCAP_NET_ADMIN |
eac6e3f0 | 81 | }; |
8429abe0 | 82 | |
eac6e3f0 RW |
83 | static struct zebra_privs_t lde_privs = |
84 | { | |
eac6e3f0 RW |
85 | #if defined(VTY_GROUP) |
86 | .vty_group = VTY_GROUP, | |
87 | #endif | |
88 | .caps_p = _caps_p, | |
89 | .cap_num_p = array_size(_caps_p), | |
90 | .cap_num_i = 0 | |
91 | }; | |
92 | ||
fea12efb | 93 | /* List of chunks of labels externally assigned by Zebra */ |
5afba51d RW |
94 | static struct list *label_chunk_list; |
95 | static struct listnode *current_label_chunk; | |
96 | ||
97 | /* Synchronous zclient to request labels */ | |
98 | static struct zclient *zclient_sync; | |
fea12efb | 99 | |
eac6e3f0 RW |
100 | /* SIGINT / SIGTERM handler. */ |
101 | static void | |
102 | sigint(void) | |
103 | { | |
104 | lde_shutdown(); | |
8429abe0 RW |
105 | } |
106 | ||
eac6e3f0 RW |
107 | static struct quagga_signal_t lde_signals[] = |
108 | { | |
1e7e440f RW |
109 | { |
110 | .signal = SIGHUP, | |
111 | /* ignore */ | |
112 | }, | |
eac6e3f0 RW |
113 | { |
114 | .signal = SIGINT, | |
115 | .handler = &sigint, | |
116 | }, | |
117 | { | |
118 | .signal = SIGTERM, | |
119 | .handler = &sigint, | |
120 | }, | |
121 | }; | |
122 | ||
8429abe0 RW |
123 | /* label decision engine */ |
124 | void | |
274f5abf | 125 | lde(void) |
8429abe0 | 126 | { |
eac6e3f0 | 127 | struct thread thread; |
8429abe0 | 128 | |
eac6e3f0 | 129 | #ifdef HAVE_SETPROCTITLE |
8429abe0 | 130 | setproctitle("label decision engine"); |
eac6e3f0 | 131 | #endif |
8429abe0 | 132 | ldpd_process = PROC_LDE_ENGINE; |
fa68f9da | 133 | log_procname = log_procnames[PROC_LDE_ENGINE]; |
8429abe0 | 134 | |
972a411c | 135 | master = thread_master_create(NULL); |
8429abe0 RW |
136 | |
137 | /* setup signal handler */ | |
eac6e3f0 | 138 | signal_init(master, array_size(lde_signals), lde_signals); |
8429abe0 | 139 | |
28e8294c RW |
140 | /* setup pipes and event handlers to the parent process */ |
141 | if ((iev_main = calloc(1, sizeof(struct imsgev))) == NULL) | |
8429abe0 | 142 | fatal(NULL); |
28e8294c | 143 | imsg_init(&iev_main->ibuf, LDPD_FD_ASYNC); |
eac6e3f0 | 144 | iev_main->handler_read = lde_dispatch_parent; |
66e78ae6 QY |
145 | iev_main->ev_read = NULL; |
146 | thread_add_read(master, iev_main->handler_read, iev_main, iev_main->ibuf.fd, | |
147 | &iev_main->ev_read); | |
eac6e3f0 | 148 | iev_main->handler_write = ldp_write_handler; |
28e8294c RW |
149 | |
150 | if ((iev_main_sync = calloc(1, sizeof(struct imsgev))) == NULL) | |
151 | fatal(NULL); | |
152 | imsg_init(&iev_main_sync->ibuf, LDPD_FD_SYNC); | |
eac6e3f0 | 153 | |
274f5abf RW |
154 | /* create base configuration */ |
155 | ldeconf = config_new_empty(); | |
156 | ||
157 | /* Fetch next active thread. */ | |
158 | while (thread_fetch(master, &thread)) | |
159 | thread_call(&thread); | |
160 | } | |
161 | ||
162 | void | |
163 | lde_init(struct ldpd_init *init) | |
164 | { | |
165 | /* drop privileges */ | |
af7e63a3 RW |
166 | lde_privs.user = init->user; |
167 | lde_privs.group = init->group; | |
37a1f2fb | 168 | zprivs_preinit(&lde_privs); |
274f5abf RW |
169 | zprivs_init(&lde_privs); |
170 | ||
eac6e3f0 | 171 | /* start the LIB garbage collector */ |
8429abe0 RW |
172 | lde_gc_start_timer(); |
173 | ||
fea12efb | 174 | /* Init synchronous zclient and label list */ |
689f5a8c DL |
175 | frr_zclient_addr(&zclient_addr, &zclient_addr_len, |
176 | init->zclient_serv_path); | |
274f5abf | 177 | zclient_sync_init(init->instance); |
fea12efb | 178 | lde_label_list_init(); |
8429abe0 RW |
179 | } |
180 | ||
eac6e3f0 | 181 | static void |
8429abe0 RW |
182 | lde_shutdown(void) |
183 | { | |
184 | /* close pipes */ | |
835a7376 RW |
185 | if (iev_ldpe) { |
186 | msgbuf_clear(&iev_ldpe->ibuf.w); | |
187 | close(iev_ldpe->ibuf.fd); | |
50732983 | 188 | iev_ldpe->ibuf.fd = -1; |
835a7376 | 189 | } |
8429abe0 RW |
190 | msgbuf_clear(&iev_main->ibuf.w); |
191 | close(iev_main->ibuf.fd); | |
50732983 | 192 | iev_main->ibuf.fd = -1; |
28e8294c RW |
193 | msgbuf_clear(&iev_main_sync->ibuf.w); |
194 | close(iev_main_sync->ibuf.fd); | |
50732983 | 195 | iev_main_sync->ibuf.fd = -1; |
8429abe0 RW |
196 | |
197 | lde_gc_stop_timer(); | |
198 | lde_nbr_clear(); | |
199 | fec_tree_clear(); | |
200 | ||
201 | config_clear(ldeconf); | |
202 | ||
835a7376 RW |
203 | if (iev_ldpe) |
204 | free(iev_ldpe); | |
8429abe0 | 205 | free(iev_main); |
28e8294c | 206 | free(iev_main_sync); |
8429abe0 RW |
207 | |
208 | log_info("label decision engine exiting"); | |
209 | exit(0); | |
210 | } | |
211 | ||
212 | /* imesg */ | |
eac6e3f0 | 213 | int |
8429abe0 RW |
214 | lde_imsg_compose_parent(int type, pid_t pid, void *data, uint16_t datalen) |
215 | { | |
50732983 RW |
216 | if (iev_main->ibuf.fd == -1) |
217 | return (0); | |
8429abe0 RW |
218 | return (imsg_compose_event(iev_main, type, 0, pid, -1, data, datalen)); |
219 | } | |
220 | ||
f2232fdf RW |
221 | void |
222 | lde_imsg_compose_parent_sync(int type, pid_t pid, void *data, uint16_t datalen) | |
223 | { | |
50732983 RW |
224 | if (iev_main_sync->ibuf.fd == -1) |
225 | return; | |
f2232fdf RW |
226 | imsg_compose_event(iev_main_sync, type, 0, pid, -1, data, datalen); |
227 | imsg_flush(&iev_main_sync->ibuf); | |
228 | } | |
229 | ||
8429abe0 RW |
230 | int |
231 | lde_imsg_compose_ldpe(int type, uint32_t peerid, pid_t pid, void *data, | |
232 | uint16_t datalen) | |
233 | { | |
50732983 RW |
234 | if (iev_ldpe->ibuf.fd == -1) |
235 | return (0); | |
8429abe0 RW |
236 | return (imsg_compose_event(iev_ldpe, type, peerid, pid, |
237 | -1, data, datalen)); | |
238 | } | |
239 | ||
240 | /* ARGSUSED */ | |
eac6e3f0 RW |
241 | static int |
242 | lde_dispatch_imsg(struct thread *thread) | |
8429abe0 | 243 | { |
eac6e3f0 | 244 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
245 | struct imsgbuf *ibuf = &iev->ibuf; |
246 | struct imsg imsg; | |
247 | struct lde_nbr *ln; | |
236c6935 RW |
248 | struct map *map; |
249 | struct lde_addr *lde_addr; | |
250 | struct notify_msg *nm; | |
8429abe0 | 251 | ssize_t n; |
eac6e3f0 | 252 | int shut = 0; |
8429abe0 | 253 | |
eac6e3f0 RW |
254 | iev->ev_read = NULL; |
255 | ||
256 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
257 | fatal("imsg_read error"); | |
258 | if (n == 0) /* connection closed */ | |
259 | shut = 1; | |
8429abe0 RW |
260 | |
261 | for (;;) { | |
262 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
263 | fatal("lde_dispatch_imsg: imsg_get error"); | |
264 | if (n == 0) | |
265 | break; | |
266 | ||
267 | switch (imsg.hdr.type) { | |
268 | case IMSG_LABEL_MAPPING_FULL: | |
269 | ln = lde_nbr_find(imsg.hdr.peerid); | |
270 | if (ln == NULL) { | |
271 | log_debug("%s: cannot find lde neighbor", | |
272 | __func__); | |
273 | break; | |
274 | } | |
275 | ||
276 | fec_snap(ln); | |
277 | break; | |
278 | case IMSG_LABEL_MAPPING: | |
279 | case IMSG_LABEL_REQUEST: | |
280 | case IMSG_LABEL_RELEASE: | |
281 | case IMSG_LABEL_WITHDRAW: | |
282 | case IMSG_LABEL_ABORT: | |
236c6935 RW |
283 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
284 | sizeof(struct map)) | |
8429abe0 | 285 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 286 | map = imsg.data; |
8429abe0 RW |
287 | |
288 | ln = lde_nbr_find(imsg.hdr.peerid); | |
289 | if (ln == NULL) { | |
290 | log_debug("%s: cannot find lde neighbor", | |
291 | __func__); | |
292 | break; | |
293 | } | |
294 | ||
295 | switch (imsg.hdr.type) { | |
296 | case IMSG_LABEL_MAPPING: | |
236c6935 | 297 | lde_check_mapping(map, ln); |
8429abe0 RW |
298 | break; |
299 | case IMSG_LABEL_REQUEST: | |
236c6935 | 300 | lde_check_request(map, ln); |
8429abe0 RW |
301 | break; |
302 | case IMSG_LABEL_RELEASE: | |
236c6935 | 303 | lde_check_release(map, ln); |
8429abe0 RW |
304 | break; |
305 | case IMSG_LABEL_WITHDRAW: | |
236c6935 | 306 | lde_check_withdraw(map, ln); |
8429abe0 RW |
307 | break; |
308 | case IMSG_LABEL_ABORT: | |
309 | /* not necessary */ | |
310 | break; | |
311 | } | |
312 | break; | |
313 | case IMSG_ADDRESS_ADD: | |
236c6935 RW |
314 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
315 | sizeof(struct lde_addr)) | |
8429abe0 | 316 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 317 | lde_addr = imsg.data; |
8429abe0 RW |
318 | |
319 | ln = lde_nbr_find(imsg.hdr.peerid); | |
320 | if (ln == NULL) { | |
321 | log_debug("%s: cannot find lde neighbor", | |
322 | __func__); | |
323 | break; | |
324 | } | |
236c6935 | 325 | if (lde_address_add(ln, lde_addr) < 0) { |
8429abe0 RW |
326 | log_debug("%s: cannot add address %s, it " |
327 | "already exists", __func__, | |
236c6935 | 328 | log_addr(lde_addr->af, &lde_addr->addr)); |
8429abe0 RW |
329 | } |
330 | break; | |
331 | case IMSG_ADDRESS_DEL: | |
236c6935 RW |
332 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
333 | sizeof(struct lde_addr)) | |
8429abe0 | 334 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 335 | lde_addr = imsg.data; |
8429abe0 RW |
336 | |
337 | ln = lde_nbr_find(imsg.hdr.peerid); | |
338 | if (ln == NULL) { | |
339 | log_debug("%s: cannot find lde neighbor", | |
340 | __func__); | |
341 | break; | |
342 | } | |
236c6935 | 343 | if (lde_address_del(ln, lde_addr) < 0) { |
8429abe0 RW |
344 | log_debug("%s: cannot delete address %s, it " |
345 | "does not exist", __func__, | |
236c6935 | 346 | log_addr(lde_addr->af, &lde_addr->addr)); |
8429abe0 RW |
347 | } |
348 | break; | |
349 | case IMSG_NOTIFICATION: | |
236c6935 RW |
350 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
351 | sizeof(struct notify_msg)) | |
8429abe0 | 352 | fatalx("lde_dispatch_imsg: wrong imsg len"); |
236c6935 | 353 | nm = imsg.data; |
8429abe0 RW |
354 | |
355 | ln = lde_nbr_find(imsg.hdr.peerid); | |
356 | if (ln == NULL) { | |
357 | log_debug("%s: cannot find lde neighbor", | |
358 | __func__); | |
359 | break; | |
360 | } | |
361 | ||
236c6935 | 362 | switch (nm->status_code) { |
8429abe0 | 363 | case S_PW_STATUS: |
236c6935 | 364 | l2vpn_recv_pw_status(ln, nm); |
8429abe0 | 365 | break; |
257799cd RW |
366 | case S_ENDOFLIB: |
367 | /* | |
368 | * Do nothing for now. Should be useful in | |
369 | * the future when we implement LDP-IGP | |
370 | * Synchronization (RFC 5443) and Graceful | |
371 | * Restart (RFC 3478). | |
372 | */ | |
8429abe0 RW |
373 | default: |
374 | break; | |
375 | } | |
376 | break; | |
377 | case IMSG_NEIGHBOR_UP: | |
378 | if (imsg.hdr.len - IMSG_HEADER_SIZE != | |
379 | sizeof(struct lde_nbr)) | |
380 | fatalx("lde_dispatch_imsg: wrong imsg len"); | |
381 | ||
382 | if (lde_nbr_find(imsg.hdr.peerid)) | |
383 | fatalx("lde_dispatch_imsg: " | |
384 | "neighbor already exists"); | |
385 | lde_nbr_new(imsg.hdr.peerid, imsg.data); | |
386 | break; | |
387 | case IMSG_NEIGHBOR_DOWN: | |
388 | lde_nbr_del(lde_nbr_find(imsg.hdr.peerid)); | |
389 | break; | |
390 | case IMSG_CTL_SHOW_LIB: | |
391 | rt_dump(imsg.hdr.pid); | |
392 | ||
393 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
394 | imsg.hdr.pid, NULL, 0); | |
395 | break; | |
396 | case IMSG_CTL_SHOW_L2VPN_PW: | |
397 | l2vpn_pw_ctl(imsg.hdr.pid); | |
398 | ||
399 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
400 | imsg.hdr.pid, NULL, 0); | |
401 | break; | |
402 | case IMSG_CTL_SHOW_L2VPN_BINDING: | |
403 | l2vpn_binding_ctl(imsg.hdr.pid); | |
404 | ||
405 | lde_imsg_compose_ldpe(IMSG_CTL_END, 0, | |
406 | imsg.hdr.pid, NULL, 0); | |
407 | break; | |
8429abe0 RW |
408 | default: |
409 | log_debug("%s: unexpected imsg %d", __func__, | |
410 | imsg.hdr.type); | |
411 | break; | |
412 | } | |
413 | imsg_free(&imsg); | |
414 | } | |
415 | if (!shut) | |
416 | imsg_event_add(iev); | |
417 | else { | |
eac6e3f0 RW |
418 | /* this pipe is dead, so remove the event handlers and exit */ |
419 | THREAD_READ_OFF(iev->ev_read); | |
420 | THREAD_WRITE_OFF(iev->ev_write); | |
421 | lde_shutdown(); | |
8429abe0 | 422 | } |
eac6e3f0 RW |
423 | |
424 | return (0); | |
8429abe0 RW |
425 | } |
426 | ||
427 | /* ARGSUSED */ | |
eac6e3f0 RW |
428 | static int |
429 | lde_dispatch_parent(struct thread *thread) | |
8429abe0 RW |
430 | { |
431 | static struct ldpd_conf *nconf; | |
52b530fc | 432 | struct iface *iface, *niface; |
8429abe0 RW |
433 | struct tnbr *ntnbr; |
434 | struct nbr_params *nnbrp; | |
52b530fc RW |
435 | static struct l2vpn *l2vpn, *nl2vpn; |
436 | struct l2vpn_if *lif, *nlif; | |
437 | struct l2vpn_pw *pw, *npw; | |
8429abe0 | 438 | struct imsg imsg; |
52b530fc | 439 | struct kif *kif; |
236c6935 | 440 | struct kroute *kr; |
11bf8e13 | 441 | int fd; |
eac6e3f0 | 442 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
443 | struct imsgbuf *ibuf = &iev->ibuf; |
444 | ssize_t n; | |
445 | int shut = 0; | |
446 | struct fec fec; | |
447 | ||
eac6e3f0 RW |
448 | iev->ev_read = NULL; |
449 | ||
450 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
451 | fatal("imsg_read error"); | |
452 | if (n == 0) /* connection closed */ | |
453 | shut = 1; | |
8429abe0 RW |
454 | |
455 | for (;;) { | |
456 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
457 | fatal("lde_dispatch_parent: imsg_get error"); | |
458 | if (n == 0) | |
459 | break; | |
460 | ||
461 | switch (imsg.hdr.type) { | |
52b530fc RW |
462 | case IMSG_IFSTATUS: |
463 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
464 | sizeof(struct kif)) | |
465 | fatalx("IFSTATUS imsg with wrong len"); | |
466 | kif = imsg.data; | |
467 | ||
468 | iface = if_lookup_name(ldeconf, kif->ifname); | |
469 | if (iface) { | |
470 | if_update_info(iface, kif); | |
471 | break; | |
472 | } | |
473 | ||
474 | RB_FOREACH(l2vpn, l2vpn_head, &ldeconf->l2vpn_tree) { | |
475 | lif = l2vpn_if_find(l2vpn, kif->ifname); | |
476 | if (lif) { | |
477 | l2vpn_if_update_info(lif, kif); | |
478 | break; | |
479 | } | |
480 | pw = l2vpn_pw_find(l2vpn, kif->ifname); | |
481 | if (pw) { | |
482 | l2vpn_pw_update_info(pw, kif); | |
483 | break; | |
484 | } | |
485 | } | |
486 | break; | |
87b5f1b7 RW |
487 | case IMSG_PW_UPDATE: |
488 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
489 | sizeof(struct zapi_pw_status)) | |
490 | fatalx("PW_UPDATE imsg with wrong len"); | |
491 | ||
492 | if (l2vpn_pw_status_update(imsg.data) != 0) | |
493 | log_warnx("%s: error updating PW status", | |
494 | __func__); | |
495 | break; | |
8429abe0 | 496 | case IMSG_NETWORK_ADD: |
8cb1fc45 | 497 | case IMSG_NETWORK_UPDATE: |
236c6935 RW |
498 | if (imsg.hdr.len != IMSG_HEADER_SIZE + |
499 | sizeof(struct kroute)) { | |
8429abe0 RW |
500 | log_warnx("%s: wrong imsg len", __func__); |
501 | break; | |
502 | } | |
236c6935 | 503 | kr = imsg.data; |
8429abe0 | 504 | |
236c6935 | 505 | switch (kr->af) { |
8429abe0 RW |
506 | case AF_INET: |
507 | fec.type = FEC_TYPE_IPV4; | |
236c6935 RW |
508 | fec.u.ipv4.prefix = kr->prefix.v4; |
509 | fec.u.ipv4.prefixlen = kr->prefixlen; | |
8429abe0 RW |
510 | break; |
511 | case AF_INET6: | |
512 | fec.type = FEC_TYPE_IPV6; | |
236c6935 RW |
513 | fec.u.ipv6.prefix = kr->prefix.v6; |
514 | fec.u.ipv6.prefixlen = kr->prefixlen; | |
8429abe0 RW |
515 | break; |
516 | default: | |
517 | fatalx("lde_dispatch_parent: unknown af"); | |
518 | } | |
519 | ||
520 | switch (imsg.hdr.type) { | |
521 | case IMSG_NETWORK_ADD: | |
236c6935 | 522 | lde_kernel_insert(&fec, kr->af, &kr->nexthop, |
e132dea0 RW |
523 | kr->ifindex, kr->route_type, |
524 | kr->route_instance, | |
236c6935 | 525 | kr->flags & F_CONNECTED, NULL); |
8429abe0 | 526 | break; |
8cb1fc45 RW |
527 | case IMSG_NETWORK_UPDATE: |
528 | lde_kernel_update(&fec); | |
8429abe0 RW |
529 | break; |
530 | } | |
531 | break; | |
532 | case IMSG_SOCKET_IPC: | |
533 | if (iev_ldpe) { | |
534 | log_warnx("%s: received unexpected imsg fd " | |
535 | "to ldpe", __func__); | |
536 | break; | |
537 | } | |
538 | if ((fd = imsg.fd) == -1) { | |
539 | log_warnx("%s: expected to receive imsg fd to " | |
540 | "ldpe but didn't receive any", __func__); | |
541 | break; | |
542 | } | |
543 | ||
544 | if ((iev_ldpe = malloc(sizeof(struct imsgev))) == NULL) | |
545 | fatal(NULL); | |
546 | imsg_init(&iev_ldpe->ibuf, fd); | |
eac6e3f0 | 547 | iev_ldpe->handler_read = lde_dispatch_imsg; |
66e78ae6 QY |
548 | iev_ldpe->ev_read = NULL; |
549 | thread_add_read(master, iev_ldpe->handler_read, iev_ldpe, iev_ldpe->ibuf.fd, | |
550 | &iev_ldpe->ev_read); | |
eac6e3f0 RW |
551 | iev_ldpe->handler_write = ldp_write_handler; |
552 | iev_ldpe->ev_write = NULL; | |
8429abe0 | 553 | break; |
274f5abf RW |
554 | case IMSG_INIT: |
555 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
556 | sizeof(struct ldpd_init)) | |
557 | fatalx("INIT imsg with wrong len"); | |
558 | ||
559 | memcpy(&init, imsg.data, sizeof(init)); | |
560 | lde_init(&init); | |
561 | break; | |
8429abe0 RW |
562 | case IMSG_RECONF_CONF: |
563 | if ((nconf = malloc(sizeof(struct ldpd_conf))) == | |
564 | NULL) | |
565 | fatal(NULL); | |
566 | memcpy(nconf, imsg.data, sizeof(struct ldpd_conf)); | |
567 | ||
45926e58 RZ |
568 | RB_INIT(iface_head, &nconf->iface_tree); |
569 | RB_INIT(tnbr_head, &nconf->tnbr_tree); | |
570 | RB_INIT(nbrp_head, &nconf->nbrp_tree); | |
571 | RB_INIT(l2vpn_head, &nconf->l2vpn_tree); | |
8429abe0 RW |
572 | break; |
573 | case IMSG_RECONF_IFACE: | |
574 | if ((niface = malloc(sizeof(struct iface))) == NULL) | |
575 | fatal(NULL); | |
576 | memcpy(niface, imsg.data, sizeof(struct iface)); | |
577 | ||
7d3d7491 | 578 | RB_INSERT(iface_head, &nconf->iface_tree, niface); |
8429abe0 RW |
579 | break; |
580 | case IMSG_RECONF_TNBR: | |
581 | if ((ntnbr = malloc(sizeof(struct tnbr))) == NULL) | |
582 | fatal(NULL); | |
583 | memcpy(ntnbr, imsg.data, sizeof(struct tnbr)); | |
584 | ||
7989cdba | 585 | RB_INSERT(tnbr_head, &nconf->tnbr_tree, ntnbr); |
8429abe0 RW |
586 | break; |
587 | case IMSG_RECONF_NBRP: | |
588 | if ((nnbrp = malloc(sizeof(struct nbr_params))) == NULL) | |
589 | fatal(NULL); | |
590 | memcpy(nnbrp, imsg.data, sizeof(struct nbr_params)); | |
591 | ||
76c4abd1 | 592 | RB_INSERT(nbrp_head, &nconf->nbrp_tree, nnbrp); |
8429abe0 RW |
593 | break; |
594 | case IMSG_RECONF_L2VPN: | |
595 | if ((nl2vpn = malloc(sizeof(struct l2vpn))) == NULL) | |
596 | fatal(NULL); | |
597 | memcpy(nl2vpn, imsg.data, sizeof(struct l2vpn)); | |
598 | ||
45926e58 RZ |
599 | RB_INIT(l2vpn_if_head, &nl2vpn->if_tree); |
600 | RB_INIT(l2vpn_pw_head, &nl2vpn->pw_tree); | |
601 | RB_INIT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree); | |
8429abe0 | 602 | |
90d7e7bd | 603 | RB_INSERT(l2vpn_head, &nconf->l2vpn_tree, nl2vpn); |
8429abe0 RW |
604 | break; |
605 | case IMSG_RECONF_L2VPN_IF: | |
606 | if ((nlif = malloc(sizeof(struct l2vpn_if))) == NULL) | |
607 | fatal(NULL); | |
608 | memcpy(nlif, imsg.data, sizeof(struct l2vpn_if)); | |
609 | ||
029c1958 | 610 | RB_INSERT(l2vpn_if_head, &nl2vpn->if_tree, nlif); |
8429abe0 RW |
611 | break; |
612 | case IMSG_RECONF_L2VPN_PW: | |
613 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
614 | fatal(NULL); | |
615 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
616 | ||
20bacaeb | 617 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_tree, npw); |
8429abe0 | 618 | break; |
eac6e3f0 RW |
619 | case IMSG_RECONF_L2VPN_IPW: |
620 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
621 | fatal(NULL); | |
622 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
623 | ||
20bacaeb | 624 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree, npw); |
eac6e3f0 | 625 | break; |
8429abe0 RW |
626 | case IMSG_RECONF_END: |
627 | merge_config(ldeconf, nconf); | |
1d75a89d | 628 | ldp_clear_config(nconf); |
8429abe0 RW |
629 | nconf = NULL; |
630 | break; | |
eac6e3f0 RW |
631 | case IMSG_DEBUG_UPDATE: |
632 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
633 | sizeof(ldp_debug)) { | |
634 | log_warnx("%s: wrong imsg len", __func__); | |
635 | break; | |
636 | } | |
637 | memcpy(&ldp_debug, imsg.data, sizeof(ldp_debug)); | |
638 | break; | |
8429abe0 RW |
639 | default: |
640 | log_debug("%s: unexpected imsg %d", __func__, | |
641 | imsg.hdr.type); | |
642 | break; | |
643 | } | |
644 | imsg_free(&imsg); | |
645 | } | |
646 | if (!shut) | |
647 | imsg_event_add(iev); | |
648 | else { | |
eac6e3f0 RW |
649 | /* this pipe is dead, so remove the event handlers and exit */ |
650 | THREAD_READ_OFF(iev->ev_read); | |
651 | THREAD_WRITE_OFF(iev->ev_write); | |
652 | lde_shutdown(); | |
8429abe0 | 653 | } |
eac6e3f0 RW |
654 | |
655 | return (0); | |
8429abe0 RW |
656 | } |
657 | ||
45a8eba9 RW |
658 | int |
659 | lde_acl_check(char *acl_name, int af, union ldpd_addr *addr, uint8_t prefixlen) | |
660 | { | |
661 | return ldp_acl_request(iev_main_sync, acl_name, af, addr, prefixlen); | |
662 | } | |
663 | ||
8429abe0 | 664 | uint32_t |
8cb1fc45 | 665 | lde_update_label(struct fec_node *fn) |
8429abe0 | 666 | { |
8cb1fc45 RW |
667 | struct fec_nh *fnh; |
668 | int connected = 0; | |
669 | ||
670 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
671 | if (fnh->flags & F_FEC_NH_CONNECTED) { | |
672 | connected = 1; | |
673 | break; | |
674 | } | |
675 | } | |
8429abe0 | 676 | |
45a8eba9 | 677 | /* should we allocate a label for this fec? */ |
8cb1fc45 | 678 | switch (fn->fec.type) { |
45a8eba9 RW |
679 | case FEC_TYPE_IPV4: |
680 | if ((ldeconf->ipv4.flags & F_LDPD_AF_ALLOCHOSTONLY) && | |
8cb1fc45 | 681 | fn->fec.u.ipv4.prefixlen != 32) |
45a8eba9 RW |
682 | return (NO_LABEL); |
683 | if (lde_acl_check(ldeconf->ipv4.acl_label_allocate_for, | |
8cb1fc45 RW |
684 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, |
685 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
686 | return (NO_LABEL); |
687 | break; | |
688 | case FEC_TYPE_IPV6: | |
689 | if ((ldeconf->ipv6.flags & F_LDPD_AF_ALLOCHOSTONLY) && | |
8cb1fc45 | 690 | fn->fec.u.ipv6.prefixlen != 128) |
45a8eba9 RW |
691 | return (NO_LABEL); |
692 | if (lde_acl_check(ldeconf->ipv6.acl_label_allocate_for, | |
8cb1fc45 RW |
693 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, |
694 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
45a8eba9 RW |
695 | return (NO_LABEL); |
696 | break; | |
697 | default: | |
45a8eba9 RW |
698 | break; |
699 | } | |
700 | ||
701 | if (connected) { | |
702 | /* choose implicit or explicit-null depending on configuration */ | |
8cb1fc45 | 703 | switch (fn->fec.type) { |
45a8eba9 RW |
704 | case FEC_TYPE_IPV4: |
705 | if (!(ldeconf->ipv4.flags & F_LDPD_AF_EXPNULL)) | |
70e98a7f | 706 | return (MPLS_LABEL_IMPLICIT_NULL); |
45a8eba9 | 707 | if (lde_acl_check(ldeconf->ipv4.acl_label_expnull_for, |
8cb1fc45 RW |
708 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, |
709 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
70e98a7f DS |
710 | return (MPLS_LABEL_IMPLICIT_NULL); |
711 | return MPLS_LABEL_IPV4_EXPLICIT_NULL; | |
45a8eba9 RW |
712 | case FEC_TYPE_IPV6: |
713 | if (!(ldeconf->ipv6.flags & F_LDPD_AF_EXPNULL)) | |
70e98a7f | 714 | return (MPLS_LABEL_IMPLICIT_NULL); |
45a8eba9 | 715 | if (lde_acl_check(ldeconf->ipv6.acl_label_expnull_for, |
8cb1fc45 RW |
716 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, |
717 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
70e98a7f DS |
718 | return (MPLS_LABEL_IMPLICIT_NULL); |
719 | return MPLS_LABEL_IPV6_EXPLICIT_NULL; | |
45a8eba9 | 720 | default: |
8cb1fc45 | 721 | fatalx("lde_update_label: unexpected fec type"); |
45a8eba9 RW |
722 | break; |
723 | } | |
724 | } | |
725 | ||
8cb1fc45 RW |
726 | /* preserve current label if there's no need to update it */ |
727 | if (fn->local_label != NO_LABEL && | |
728 | fn->local_label > MPLS_LABEL_RESERVED_MAX) | |
729 | return (fn->local_label); | |
730 | ||
5afba51d | 731 | return (lde_get_next_label()); |
8429abe0 RW |
732 | } |
733 | ||
734 | void | |
735 | lde_send_change_klabel(struct fec_node *fn, struct fec_nh *fnh) | |
736 | { | |
87b5f1b7 RW |
737 | struct kroute kr; |
738 | struct zapi_pw zpw; | |
8429abe0 RW |
739 | struct l2vpn_pw *pw; |
740 | ||
741 | switch (fn->fec.type) { | |
742 | case FEC_TYPE_IPV4: | |
743 | memset(&kr, 0, sizeof(kr)); | |
744 | kr.af = AF_INET; | |
745 | kr.prefix.v4 = fn->fec.u.ipv4.prefix; | |
746 | kr.prefixlen = fn->fec.u.ipv4.prefixlen; | |
747 | kr.nexthop.v4 = fnh->nexthop.v4; | |
88d88a9c | 748 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
749 | kr.local_label = fn->local_label; |
750 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
751 | kr.route_type = fnh->route_type; |
752 | kr.route_instance = fnh->route_instance; | |
8429abe0 RW |
753 | |
754 | lde_imsg_compose_parent(IMSG_KLABEL_CHANGE, 0, &kr, | |
755 | sizeof(kr)); | |
8429abe0 RW |
756 | break; |
757 | case FEC_TYPE_IPV6: | |
758 | memset(&kr, 0, sizeof(kr)); | |
759 | kr.af = AF_INET6; | |
760 | kr.prefix.v6 = fn->fec.u.ipv6.prefix; | |
761 | kr.prefixlen = fn->fec.u.ipv6.prefixlen; | |
762 | kr.nexthop.v6 = fnh->nexthop.v6; | |
88d88a9c | 763 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
764 | kr.local_label = fn->local_label; |
765 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
766 | kr.route_type = fnh->route_type; |
767 | kr.route_instance = fnh->route_instance; | |
8429abe0 RW |
768 | |
769 | lde_imsg_compose_parent(IMSG_KLABEL_CHANGE, 0, &kr, | |
770 | sizeof(kr)); | |
8429abe0 RW |
771 | break; |
772 | case FEC_TYPE_PWID: | |
3c5b5220 RW |
773 | pw = (struct l2vpn_pw *) fn->data; |
774 | if (!pw || fn->local_label == NO_LABEL || | |
8429abe0 RW |
775 | fnh->remote_label == NO_LABEL) |
776 | return; | |
777 | ||
3c5b5220 | 778 | pw->enabled = true; |
87b5f1b7 RW |
779 | pw2zpw(pw, &zpw); |
780 | zpw.local_label = fn->local_label; | |
781 | zpw.remote_label = fnh->remote_label; | |
782 | lde_imsg_compose_parent(IMSG_KPW_SET, 0, &zpw, sizeof(zpw)); | |
8429abe0 RW |
783 | break; |
784 | } | |
785 | } | |
786 | ||
787 | void | |
788 | lde_send_delete_klabel(struct fec_node *fn, struct fec_nh *fnh) | |
789 | { | |
790 | struct kroute kr; | |
87b5f1b7 | 791 | struct zapi_pw zpw; |
8429abe0 RW |
792 | struct l2vpn_pw *pw; |
793 | ||
794 | switch (fn->fec.type) { | |
795 | case FEC_TYPE_IPV4: | |
796 | memset(&kr, 0, sizeof(kr)); | |
797 | kr.af = AF_INET; | |
798 | kr.prefix.v4 = fn->fec.u.ipv4.prefix; | |
799 | kr.prefixlen = fn->fec.u.ipv4.prefixlen; | |
800 | kr.nexthop.v4 = fnh->nexthop.v4; | |
88d88a9c | 801 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
802 | kr.local_label = fn->local_label; |
803 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
804 | kr.route_type = fnh->route_type; |
805 | kr.route_instance = fnh->route_instance; | |
8429abe0 RW |
806 | |
807 | lde_imsg_compose_parent(IMSG_KLABEL_DELETE, 0, &kr, | |
808 | sizeof(kr)); | |
8429abe0 RW |
809 | break; |
810 | case FEC_TYPE_IPV6: | |
811 | memset(&kr, 0, sizeof(kr)); | |
812 | kr.af = AF_INET6; | |
813 | kr.prefix.v6 = fn->fec.u.ipv6.prefix; | |
814 | kr.prefixlen = fn->fec.u.ipv6.prefixlen; | |
815 | kr.nexthop.v6 = fnh->nexthop.v6; | |
88d88a9c | 816 | kr.ifindex = fnh->ifindex; |
8429abe0 RW |
817 | kr.local_label = fn->local_label; |
818 | kr.remote_label = fnh->remote_label; | |
e132dea0 RW |
819 | kr.route_type = fnh->route_type; |
820 | kr.route_instance = fnh->route_instance; | |
8429abe0 RW |
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; | |
3c5b5220 RW |
827 | if (!pw) |
828 | return; | |
829 | ||
830 | pw->enabled = false; | |
87b5f1b7 RW |
831 | pw2zpw(pw, &zpw); |
832 | zpw.local_label = fn->local_label; | |
833 | zpw.remote_label = fnh->remote_label; | |
834 | lde_imsg_compose_parent(IMSG_KPW_UNSET, 0, &zpw, sizeof(zpw)); | |
8429abe0 RW |
835 | break; |
836 | } | |
837 | } | |
838 | ||
839 | void | |
840 | lde_fec2map(struct fec *fec, struct map *map) | |
841 | { | |
842 | memset(map, 0, sizeof(*map)); | |
843 | ||
844 | switch (fec->type) { | |
845 | case FEC_TYPE_IPV4: | |
846 | map->type = MAP_TYPE_PREFIX; | |
847 | map->fec.prefix.af = AF_INET; | |
848 | map->fec.prefix.prefix.v4 = fec->u.ipv4.prefix; | |
849 | map->fec.prefix.prefixlen = fec->u.ipv4.prefixlen; | |
850 | break; | |
851 | case FEC_TYPE_IPV6: | |
852 | map->type = MAP_TYPE_PREFIX; | |
853 | map->fec.prefix.af = AF_INET6; | |
854 | map->fec.prefix.prefix.v6 = fec->u.ipv6.prefix; | |
855 | map->fec.prefix.prefixlen = fec->u.ipv6.prefixlen; | |
856 | break; | |
857 | case FEC_TYPE_PWID: | |
858 | map->type = MAP_TYPE_PWID; | |
859 | map->fec.pwid.type = fec->u.pwid.type; | |
860 | map->fec.pwid.group_id = 0; | |
861 | map->flags |= F_MAP_PW_ID; | |
862 | map->fec.pwid.pwid = fec->u.pwid.pwid; | |
863 | break; | |
864 | } | |
865 | } | |
866 | ||
867 | void | |
868 | lde_map2fec(struct map *map, struct in_addr lsr_id, struct fec *fec) | |
869 | { | |
870 | memset(fec, 0, sizeof(*fec)); | |
871 | ||
872 | switch (map->type) { | |
873 | case MAP_TYPE_PREFIX: | |
874 | switch (map->fec.prefix.af) { | |
875 | case AF_INET: | |
876 | fec->type = FEC_TYPE_IPV4; | |
877 | fec->u.ipv4.prefix = map->fec.prefix.prefix.v4; | |
878 | fec->u.ipv4.prefixlen = map->fec.prefix.prefixlen; | |
879 | break; | |
880 | case AF_INET6: | |
881 | fec->type = FEC_TYPE_IPV6; | |
882 | fec->u.ipv6.prefix = map->fec.prefix.prefix.v6; | |
883 | fec->u.ipv6.prefixlen = map->fec.prefix.prefixlen; | |
884 | break; | |
885 | default: | |
886 | fatalx("lde_map2fec: unknown af"); | |
887 | break; | |
888 | } | |
889 | break; | |
890 | case MAP_TYPE_PWID: | |
891 | fec->type = FEC_TYPE_PWID; | |
892 | fec->u.pwid.type = map->fec.pwid.type; | |
893 | fec->u.pwid.pwid = map->fec.pwid.pwid; | |
894 | fec->u.pwid.lsr_id = lsr_id; | |
895 | break; | |
896 | } | |
897 | } | |
898 | ||
899 | void | |
900 | lde_send_labelmapping(struct lde_nbr *ln, struct fec_node *fn, int single) | |
901 | { | |
7c2abbd7 RW |
902 | struct lde_wdraw *lw; |
903 | struct lde_map *me; | |
904 | struct lde_req *lre; | |
905 | struct map map; | |
906 | struct l2vpn_pw *pw; | |
907 | ||
908 | /* | |
909 | * We shouldn't send a new label mapping if we have a pending | |
910 | * label release to receive. In this case, schedule to send a | |
911 | * label mapping as soon as a label release is received. | |
912 | */ | |
913 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, &fn->fec); | |
914 | if (lw) { | |
b4fcca6b RW |
915 | if (!fec_find(&ln->sent_map_pending, &fn->fec)) { |
916 | debug_evt("%s: FEC %s: scheduling to send label " | |
917 | "mapping later (waiting for pending label release)", | |
918 | __func__, log_fec(&fn->fec)); | |
7c2abbd7 | 919 | lde_map_pending_add(ln, fn); |
b4fcca6b | 920 | } |
7c2abbd7 RW |
921 | return; |
922 | } | |
8429abe0 RW |
923 | |
924 | /* | |
925 | * This function skips SL.1 - 3 and SL.9 - 14 because the label | |
926 | * allocation is done way earlier (because of the merging nature of | |
927 | * ldpd). | |
928 | */ | |
929 | ||
930 | lde_fec2map(&fn->fec, &map); | |
931 | switch (fn->fec.type) { | |
932 | case FEC_TYPE_IPV4: | |
933 | if (!ln->v4_enabled) | |
934 | return; | |
45a8eba9 RW |
935 | if (lde_acl_check(ldeconf->ipv4.acl_label_advertise_to, |
936 | AF_INET, (union ldpd_addr *)&ln->id, 32) != FILTER_PERMIT) | |
937 | return; | |
938 | if (lde_acl_check(ldeconf->ipv4.acl_label_advertise_for, | |
939 | AF_INET, (union ldpd_addr *)&fn->fec.u.ipv4.prefix, | |
940 | fn->fec.u.ipv4.prefixlen) != FILTER_PERMIT) | |
941 | return; | |
8429abe0 RW |
942 | break; |
943 | case FEC_TYPE_IPV6: | |
944 | if (!ln->v6_enabled) | |
945 | return; | |
45a8eba9 RW |
946 | if (lde_acl_check(ldeconf->ipv6.acl_label_advertise_to, |
947 | AF_INET, (union ldpd_addr *)&ln->id, 32) != FILTER_PERMIT) | |
948 | return; | |
949 | if (lde_acl_check(ldeconf->ipv6.acl_label_advertise_for, | |
950 | AF_INET6, (union ldpd_addr *)&fn->fec.u.ipv6.prefix, | |
951 | fn->fec.u.ipv6.prefixlen) != FILTER_PERMIT) | |
952 | return; | |
8429abe0 RW |
953 | break; |
954 | case FEC_TYPE_PWID: | |
955 | pw = (struct l2vpn_pw *) fn->data; | |
956 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
957 | /* not the remote end of the pseudowire */ | |
958 | return; | |
959 | ||
960 | map.flags |= F_MAP_PW_IFMTU; | |
961 | map.fec.pwid.ifmtu = pw->l2vpn->mtu; | |
962 | if (pw->flags & F_PW_CWORD) | |
963 | map.flags |= F_MAP_PW_CWORD; | |
964 | if (pw->flags & F_PW_STATUSTLV) { | |
965 | map.flags |= F_MAP_PW_STATUS; | |
87b5f1b7 | 966 | map.pw_status = pw->local_status; |
8429abe0 RW |
967 | } |
968 | break; | |
969 | } | |
970 | map.label = fn->local_label; | |
971 | ||
972 | /* SL.6: is there a pending request for this mapping? */ | |
973 | lre = (struct lde_req *)fec_find(&ln->recv_req, &fn->fec); | |
974 | if (lre) { | |
975 | /* set label request msg id in the mapping response. */ | |
976 | map.requestid = lre->msg_id; | |
977 | map.flags = F_MAP_REQ_ID; | |
978 | ||
979 | /* SL.7: delete record of pending request */ | |
980 | lde_req_del(ln, lre, 0); | |
981 | } | |
982 | ||
983 | /* SL.4: send label mapping */ | |
984 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD, ln->peerid, 0, | |
985 | &map, sizeof(map)); | |
986 | if (single) | |
987 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, | |
988 | NULL, 0); | |
989 | ||
990 | /* SL.5: record sent label mapping */ | |
991 | me = (struct lde_map *)fec_find(&ln->sent_map, &fn->fec); | |
992 | if (me == NULL) | |
993 | me = lde_map_add(ln, fn, 1); | |
994 | me->map = map; | |
995 | } | |
996 | ||
997 | void | |
0bcc2916 RW |
998 | lde_send_labelwithdraw(struct lde_nbr *ln, struct fec_node *fn, |
999 | struct map *wcard, struct status_tlv *st) | |
8429abe0 RW |
1000 | { |
1001 | struct lde_wdraw *lw; | |
1002 | struct map map; | |
1003 | struct fec *f; | |
1004 | struct l2vpn_pw *pw; | |
1005 | ||
1006 | if (fn) { | |
1007 | lde_fec2map(&fn->fec, &map); | |
1008 | switch (fn->fec.type) { | |
1009 | case FEC_TYPE_IPV4: | |
1010 | if (!ln->v4_enabled) | |
1011 | return; | |
1012 | break; | |
1013 | case FEC_TYPE_IPV6: | |
1014 | if (!ln->v6_enabled) | |
1015 | return; | |
1016 | break; | |
1017 | case FEC_TYPE_PWID: | |
1018 | pw = (struct l2vpn_pw *) fn->data; | |
1019 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1020 | /* not the remote end of the pseudowire */ | |
1021 | return; | |
1022 | ||
1023 | if (pw->flags & F_PW_CWORD) | |
1024 | map.flags |= F_MAP_PW_CWORD; | |
1025 | break; | |
1026 | } | |
1027 | map.label = fn->local_label; | |
0bcc2916 RW |
1028 | } else |
1029 | memcpy(&map, wcard, sizeof(map)); | |
8429abe0 RW |
1030 | |
1031 | if (st) { | |
1032 | map.st.status_code = st->status_code; | |
1033 | map.st.msg_id = st->msg_id; | |
1034 | map.st.msg_type = st->msg_type; | |
1035 | map.flags |= F_MAP_STATUS; | |
1036 | } | |
1037 | ||
1038 | /* SWd.1: send label withdraw. */ | |
1039 | lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD, ln->peerid, 0, | |
1040 | &map, sizeof(map)); | |
1041 | lde_imsg_compose_ldpe(IMSG_WITHDRAW_ADD_END, ln->peerid, 0, NULL, 0); | |
1042 | ||
1043 | /* SWd.2: record label withdraw. */ | |
1044 | if (fn) { | |
1045 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, &fn->fec); | |
1046 | if (lw == NULL) | |
1047 | lw = lde_wdraw_add(ln, fn); | |
1048 | lw->label = map.label; | |
1049 | } else { | |
0bcc2916 RW |
1050 | struct lde_map *me; |
1051 | ||
8429abe0 RW |
1052 | RB_FOREACH(f, fec_tree, &ft) { |
1053 | fn = (struct fec_node *)f; | |
0bcc2916 RW |
1054 | me = (struct lde_map *)fec_find(&ln->sent_map, &fn->fec); |
1055 | if (lde_wildcard_apply(wcard, &fn->fec, me) == 0) | |
1056 | continue; | |
8429abe0 RW |
1057 | |
1058 | lw = (struct lde_wdraw *)fec_find(&ln->sent_wdraw, | |
1059 | &fn->fec); | |
1060 | if (lw == NULL) | |
1061 | lw = lde_wdraw_add(ln, fn); | |
1062 | lw->label = map.label; | |
1063 | } | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | void | |
0bcc2916 | 1068 | lde_send_labelwithdraw_wcard(struct lde_nbr *ln, uint32_t label) |
8429abe0 | 1069 | { |
0bcc2916 | 1070 | struct map wcard; |
8429abe0 | 1071 | |
0bcc2916 RW |
1072 | memset(&wcard, 0, sizeof(wcard)); |
1073 | wcard.type = MAP_TYPE_WILDCARD; | |
1074 | wcard.label = label; | |
1075 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
8429abe0 RW |
1076 | } |
1077 | ||
d4afb819 RW |
1078 | void |
1079 | lde_send_labelwithdraw_twcard_prefix(struct lde_nbr *ln, uint16_t af, | |
1080 | uint32_t label) | |
1081 | { | |
1082 | struct map wcard; | |
1083 | ||
1084 | memset(&wcard, 0, sizeof(wcard)); | |
1085 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1086 | wcard.fec.twcard.type = MAP_TYPE_PREFIX; | |
1087 | wcard.fec.twcard.u.prefix_af = af; | |
1088 | wcard.label = label; | |
1089 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1090 | } | |
1091 | ||
aba50a83 RW |
1092 | void |
1093 | lde_send_labelwithdraw_twcard_pwid(struct lde_nbr *ln, uint16_t pw_type, | |
1094 | uint32_t label) | |
1095 | { | |
1096 | struct map wcard; | |
1097 | ||
1098 | memset(&wcard, 0, sizeof(wcard)); | |
1099 | wcard.type = MAP_TYPE_TYPED_WCARD; | |
1100 | wcard.fec.twcard.type = MAP_TYPE_PWID; | |
1101 | wcard.fec.twcard.u.pw_type = pw_type; | |
1102 | wcard.label = label; | |
1103 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1104 | } | |
1105 | ||
8429abe0 | 1106 | void |
0bcc2916 RW |
1107 | lde_send_labelwithdraw_pwid_wcard(struct lde_nbr *ln, uint16_t pw_type, |
1108 | uint32_t group_id) | |
1109 | { | |
1110 | struct map wcard; | |
1111 | ||
1112 | memset(&wcard, 0, sizeof(wcard)); | |
1113 | wcard.type = MAP_TYPE_PWID; | |
1114 | wcard.fec.pwid.type = pw_type; | |
1115 | wcard.fec.pwid.group_id = group_id; | |
1116 | /* we can not append a Label TLV when using PWid group wildcards. */ | |
1117 | wcard.label = NO_LABEL; | |
1118 | lde_send_labelwithdraw(ln, NULL, &wcard, NULL); | |
1119 | } | |
1120 | ||
1121 | void | |
1122 | lde_send_labelrelease(struct lde_nbr *ln, struct fec_node *fn, | |
1123 | struct map *wcard, uint32_t label) | |
8429abe0 RW |
1124 | { |
1125 | struct map map; | |
1126 | struct l2vpn_pw *pw; | |
1127 | ||
1128 | if (fn) { | |
1129 | lde_fec2map(&fn->fec, &map); | |
1130 | switch (fn->fec.type) { | |
1131 | case FEC_TYPE_IPV4: | |
1132 | if (!ln->v4_enabled) | |
1133 | return; | |
1134 | break; | |
1135 | case FEC_TYPE_IPV6: | |
1136 | if (!ln->v6_enabled) | |
1137 | return; | |
1138 | break; | |
1139 | case FEC_TYPE_PWID: | |
1140 | pw = (struct l2vpn_pw *) fn->data; | |
1141 | if (pw == NULL || pw->lsr_id.s_addr != ln->id.s_addr) | |
1142 | /* not the remote end of the pseudowire */ | |
1143 | return; | |
1144 | ||
1145 | if (pw->flags & F_PW_CWORD) | |
1146 | map.flags |= F_MAP_PW_CWORD; | |
1147 | break; | |
1148 | } | |
0bcc2916 RW |
1149 | } else |
1150 | memcpy(&map, wcard, sizeof(map)); | |
8429abe0 RW |
1151 | map.label = label; |
1152 | ||
1153 | lde_imsg_compose_ldpe(IMSG_RELEASE_ADD, ln->peerid, 0, | |
1154 | &map, sizeof(map)); | |
1155 | lde_imsg_compose_ldpe(IMSG_RELEASE_ADD_END, ln->peerid, 0, NULL, 0); | |
1156 | } | |
1157 | ||
1158 | void | |
05aac414 | 1159 | lde_send_notification(struct lde_nbr *ln, uint32_t status_code, uint32_t msg_id, |
8429abe0 RW |
1160 | uint16_t msg_type) |
1161 | { | |
1162 | struct notify_msg nm; | |
1163 | ||
1164 | memset(&nm, 0, sizeof(nm)); | |
1165 | nm.status_code = status_code; | |
1166 | /* 'msg_id' and 'msg_type' should be in network byte order */ | |
1167 | nm.msg_id = msg_id; | |
1168 | nm.msg_type = msg_type; | |
1169 | ||
05aac414 | 1170 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, |
8429abe0 RW |
1171 | &nm, sizeof(nm)); |
1172 | } | |
1173 | ||
257799cd RW |
1174 | void |
1175 | lde_send_notification_eol_prefix(struct lde_nbr *ln, int af) | |
1176 | { | |
1177 | struct notify_msg nm; | |
1178 | ||
1179 | memset(&nm, 0, sizeof(nm)); | |
1180 | nm.status_code = S_ENDOFLIB; | |
1181 | nm.fec.type = MAP_TYPE_TYPED_WCARD; | |
1182 | nm.fec.fec.twcard.type = MAP_TYPE_PREFIX; | |
1183 | nm.fec.fec.twcard.u.prefix_af = af; | |
1184 | nm.flags |= F_NOTIF_FEC; | |
1185 | ||
1186 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, | |
1187 | &nm, sizeof(nm)); | |
1188 | } | |
1189 | ||
1190 | void | |
1191 | lde_send_notification_eol_pwid(struct lde_nbr *ln, uint16_t pw_type) | |
1192 | { | |
1193 | struct notify_msg nm; | |
1194 | ||
1195 | memset(&nm, 0, sizeof(nm)); | |
1196 | nm.status_code = S_ENDOFLIB; | |
1197 | nm.fec.type = MAP_TYPE_TYPED_WCARD; | |
1198 | nm.fec.fec.twcard.type = MAP_TYPE_PWID; | |
1199 | nm.fec.fec.twcard.u.pw_type = pw_type; | |
1200 | nm.flags |= F_NOTIF_FEC; | |
1201 | ||
1202 | lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, | |
1203 | &nm, sizeof(nm)); | |
1204 | } | |
1205 | ||
8429abe0 | 1206 | static __inline int |
45926e58 | 1207 | lde_nbr_compare(const struct lde_nbr *a, const struct lde_nbr *b) |
8429abe0 RW |
1208 | { |
1209 | return (a->peerid - b->peerid); | |
1210 | } | |
1211 | ||
1212 | static struct lde_nbr * | |
1213 | lde_nbr_new(uint32_t peerid, struct lde_nbr *new) | |
1214 | { | |
1215 | struct lde_nbr *ln; | |
1216 | ||
1217 | if ((ln = calloc(1, sizeof(*ln))) == NULL) | |
1218 | fatal(__func__); | |
1219 | ||
1220 | ln->id = new->id; | |
1221 | ln->v4_enabled = new->v4_enabled; | |
1222 | ln->v6_enabled = new->v6_enabled; | |
257799cd | 1223 | ln->flags = new->flags; |
8429abe0 RW |
1224 | ln->peerid = peerid; |
1225 | fec_init(&ln->recv_map); | |
1226 | fec_init(&ln->sent_map); | |
7c2abbd7 | 1227 | fec_init(&ln->sent_map_pending); |
8429abe0 RW |
1228 | fec_init(&ln->recv_req); |
1229 | fec_init(&ln->sent_req); | |
1230 | fec_init(&ln->sent_wdraw); | |
1231 | ||
1232 | TAILQ_INIT(&ln->addr_list); | |
1233 | ||
1234 | if (RB_INSERT(nbr_tree, &lde_nbrs, ln) != NULL) | |
1235 | fatalx("lde_nbr_new: RB_INSERT failed"); | |
1236 | ||
1237 | return (ln); | |
1238 | } | |
1239 | ||
1240 | static void | |
1241 | lde_nbr_del(struct lde_nbr *ln) | |
1242 | { | |
1243 | struct fec *f; | |
1244 | struct fec_node *fn; | |
1245 | struct fec_nh *fnh; | |
1246 | struct l2vpn_pw *pw; | |
1247 | ||
1248 | if (ln == NULL) | |
1249 | return; | |
1250 | ||
1251 | /* uninstall received mappings */ | |
1252 | RB_FOREACH(f, fec_tree, &ft) { | |
1253 | fn = (struct fec_node *)f; | |
1254 | ||
1255 | LIST_FOREACH(fnh, &fn->nexthops, entry) { | |
1256 | switch (f->type) { | |
1257 | case FEC_TYPE_IPV4: | |
1258 | case FEC_TYPE_IPV6: | |
1259 | if (!lde_address_find(ln, fnh->af, | |
1260 | &fnh->nexthop)) | |
1261 | continue; | |
1262 | break; | |
1263 | case FEC_TYPE_PWID: | |
1264 | if (f->u.pwid.lsr_id.s_addr != ln->id.s_addr) | |
1265 | continue; | |
1266 | pw = (struct l2vpn_pw *) fn->data; | |
1267 | if (pw) | |
1268 | l2vpn_pw_reset(pw); | |
1269 | break; | |
1270 | default: | |
1271 | break; | |
1272 | } | |
1273 | ||
1274 | lde_send_delete_klabel(fn, fnh); | |
1275 | fnh->remote_label = NO_LABEL; | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | lde_address_list_free(ln); | |
1280 | ||
1281 | fec_clear(&ln->recv_map, lde_map_free); | |
1282 | fec_clear(&ln->sent_map, lde_map_free); | |
7c2abbd7 | 1283 | fec_clear(&ln->sent_map_pending, free); |
8429abe0 RW |
1284 | fec_clear(&ln->recv_req, free); |
1285 | fec_clear(&ln->sent_req, free); | |
1286 | fec_clear(&ln->sent_wdraw, free); | |
1287 | ||
1288 | RB_REMOVE(nbr_tree, &lde_nbrs, ln); | |
1289 | ||
1290 | free(ln); | |
1291 | } | |
1292 | ||
1293 | static struct lde_nbr * | |
1294 | lde_nbr_find(uint32_t peerid) | |
1295 | { | |
1296 | struct lde_nbr ln; | |
1297 | ||
1298 | ln.peerid = peerid; | |
1299 | ||
1300 | return (RB_FIND(nbr_tree, &lde_nbrs, &ln)); | |
1301 | } | |
1302 | ||
1303 | struct lde_nbr * | |
1304 | lde_nbr_find_by_lsrid(struct in_addr addr) | |
1305 | { | |
1306 | struct lde_nbr *ln; | |
1307 | ||
1308 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1309 | if (ln->id.s_addr == addr.s_addr) | |
1310 | return (ln); | |
1311 | ||
1312 | return (NULL); | |
1313 | } | |
1314 | ||
1315 | struct lde_nbr * | |
1316 | lde_nbr_find_by_addr(int af, union ldpd_addr *addr) | |
1317 | { | |
1318 | struct lde_nbr *ln; | |
1319 | ||
1320 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1321 | if (lde_address_find(ln, af, addr) != NULL) | |
1322 | return (ln); | |
1323 | ||
1324 | return (NULL); | |
1325 | } | |
1326 | ||
1327 | static void | |
1328 | lde_nbr_clear(void) | |
1329 | { | |
1330 | struct lde_nbr *ln; | |
1331 | ||
55cd0f61 DS |
1332 | while (!RB_EMPTY(nbr_tree, &lde_nbrs)) { |
1333 | ln = RB_ROOT(nbr_tree, &lde_nbrs); | |
1334 | ||
8429abe0 | 1335 | lde_nbr_del(ln); |
55cd0f61 | 1336 | } |
8429abe0 RW |
1337 | } |
1338 | ||
1339 | static void | |
1340 | lde_nbr_addr_update(struct lde_nbr *ln, struct lde_addr *lde_addr, int removed) | |
1341 | { | |
1342 | struct fec *fec; | |
1343 | struct fec_node *fn; | |
1344 | struct fec_nh *fnh; | |
1345 | struct lde_map *me; | |
1346 | ||
1347 | RB_FOREACH(fec, fec_tree, &ln->recv_map) { | |
8429abe0 RW |
1348 | switch (fec->type) { |
1349 | case FEC_TYPE_IPV4: | |
1350 | if (lde_addr->af != AF_INET) | |
1351 | continue; | |
1352 | break; | |
1353 | case FEC_TYPE_IPV6: | |
1354 | if (lde_addr->af != AF_INET6) | |
1355 | continue; | |
1356 | break; | |
1357 | default: | |
1358 | continue; | |
1359 | } | |
1360 | ||
1e4c8673 RW |
1361 | fn = (struct fec_node *)fec_find(&ft, fec); |
1362 | if (fn == NULL) | |
1363 | /* shouldn't happen */ | |
1364 | continue; | |
1365 | ||
8429abe0 RW |
1366 | LIST_FOREACH(fnh, &fn->nexthops, entry) { |
1367 | if (ldp_addrcmp(fnh->af, &fnh->nexthop, | |
1368 | &lde_addr->addr)) | |
1369 | continue; | |
1370 | ||
1371 | if (removed) { | |
1372 | lde_send_delete_klabel(fn, fnh); | |
1373 | fnh->remote_label = NO_LABEL; | |
1374 | } else { | |
1375 | me = (struct lde_map *)fec; | |
1376 | fnh->remote_label = me->map.label; | |
1377 | lde_send_change_klabel(fn, fnh); | |
1378 | } | |
1379 | break; | |
1380 | } | |
1381 | } | |
1382 | } | |
1383 | ||
d3e1887a | 1384 | static __inline int |
45926e58 | 1385 | lde_map_compare(const struct lde_map *a, const struct lde_map *b) |
d3e1887a RW |
1386 | { |
1387 | return (ldp_addrcmp(AF_INET, (union ldpd_addr *)&a->nexthop->id, | |
1388 | (union ldpd_addr *)&b->nexthop->id)); | |
1389 | } | |
1390 | ||
8429abe0 RW |
1391 | struct lde_map * |
1392 | lde_map_add(struct lde_nbr *ln, struct fec_node *fn, int sent) | |
1393 | { | |
1394 | struct lde_map *me; | |
1395 | ||
1396 | me = calloc(1, sizeof(*me)); | |
1397 | if (me == NULL) | |
1398 | fatal(__func__); | |
1399 | ||
1400 | me->fec = fn->fec; | |
1401 | me->nexthop = ln; | |
1402 | ||
1403 | if (sent) { | |
d3e1887a RW |
1404 | RB_INSERT(lde_map_head, &fn->upstream, me); |
1405 | me->head = &fn->upstream; | |
8429abe0 RW |
1406 | if (fec_insert(&ln->sent_map, &me->fec)) |
1407 | log_warnx("failed to add %s to sent map", | |
1408 | log_fec(&me->fec)); | |
1409 | /* XXX on failure more cleanup is needed */ | |
1410 | } else { | |
d3e1887a RW |
1411 | RB_INSERT(lde_map_head, &fn->downstream, me); |
1412 | me->head = &fn->downstream; | |
8429abe0 RW |
1413 | if (fec_insert(&ln->recv_map, &me->fec)) |
1414 | log_warnx("failed to add %s to recv map", | |
1415 | log_fec(&me->fec)); | |
1416 | } | |
1417 | ||
1418 | return (me); | |
1419 | } | |
1420 | ||
1421 | void | |
1422 | lde_map_del(struct lde_nbr *ln, struct lde_map *me, int sent) | |
1423 | { | |
1424 | if (sent) | |
1425 | fec_remove(&ln->sent_map, &me->fec); | |
1426 | else | |
1427 | fec_remove(&ln->recv_map, &me->fec); | |
1428 | ||
1429 | lde_map_free(me); | |
1430 | } | |
1431 | ||
1432 | static void | |
1433 | lde_map_free(void *ptr) | |
1434 | { | |
1435 | struct lde_map *map = ptr; | |
1436 | ||
d3e1887a | 1437 | RB_REMOVE(lde_map_head, map->head, map); |
8429abe0 RW |
1438 | free(map); |
1439 | } | |
1440 | ||
7c2abbd7 RW |
1441 | struct fec * |
1442 | lde_map_pending_add(struct lde_nbr *ln, struct fec_node *fn) | |
1443 | { | |
1444 | struct fec *map; | |
1445 | ||
1446 | map = calloc(1, sizeof(*map)); | |
1447 | if (map == NULL) | |
1448 | fatal(__func__); | |
1449 | ||
1450 | *map = fn->fec; | |
1451 | if (fec_insert(&ln->sent_map_pending, map)) | |
1452 | log_warnx("failed to add %s to sent map (pending)", | |
1453 | log_fec(map)); | |
1454 | ||
1455 | return (map); | |
1456 | } | |
1457 | ||
1458 | void | |
1459 | lde_map_pending_del(struct lde_nbr *ln, struct fec *map) | |
1460 | { | |
1461 | fec_remove(&ln->sent_map_pending, map); | |
1462 | free(map); | |
1463 | } | |
1464 | ||
8429abe0 RW |
1465 | struct lde_req * |
1466 | lde_req_add(struct lde_nbr *ln, struct fec *fec, int sent) | |
1467 | { | |
1468 | struct fec_tree *t; | |
1469 | struct lde_req *lre; | |
1470 | ||
1471 | t = sent ? &ln->sent_req : &ln->recv_req; | |
1472 | ||
1473 | lre = calloc(1, sizeof(*lre)); | |
1474 | if (lre != NULL) { | |
1475 | lre->fec = *fec; | |
1476 | ||
1477 | if (fec_insert(t, &lre->fec)) { | |
1478 | log_warnx("failed to add %s to %s req", | |
1479 | log_fec(&lre->fec), sent ? "sent" : "recv"); | |
1480 | free(lre); | |
1481 | return (NULL); | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | return (lre); | |
1486 | } | |
1487 | ||
1488 | void | |
1489 | lde_req_del(struct lde_nbr *ln, struct lde_req *lre, int sent) | |
1490 | { | |
1491 | if (sent) | |
1492 | fec_remove(&ln->sent_req, &lre->fec); | |
1493 | else | |
1494 | fec_remove(&ln->recv_req, &lre->fec); | |
1495 | ||
1496 | free(lre); | |
1497 | } | |
1498 | ||
1499 | struct lde_wdraw * | |
1500 | lde_wdraw_add(struct lde_nbr *ln, struct fec_node *fn) | |
1501 | { | |
1502 | struct lde_wdraw *lw; | |
1503 | ||
1504 | lw = calloc(1, sizeof(*lw)); | |
1505 | if (lw == NULL) | |
1506 | fatal(__func__); | |
1507 | ||
1508 | lw->fec = fn->fec; | |
1509 | ||
1510 | if (fec_insert(&ln->sent_wdraw, &lw->fec)) | |
1511 | log_warnx("failed to add %s to sent wdraw", | |
1512 | log_fec(&lw->fec)); | |
1513 | ||
1514 | return (lw); | |
1515 | } | |
1516 | ||
1517 | void | |
1518 | lde_wdraw_del(struct lde_nbr *ln, struct lde_wdraw *lw) | |
1519 | { | |
1520 | fec_remove(&ln->sent_wdraw, &lw->fec); | |
1521 | free(lw); | |
1522 | } | |
1523 | ||
1524 | void | |
45a8eba9 | 1525 | lde_change_egress_label(int af) |
8429abe0 RW |
1526 | { |
1527 | struct lde_nbr *ln; | |
1528 | struct fec *f; | |
1529 | struct fec_node *fn; | |
1530 | ||
be54d744 | 1531 | /* explicitly withdraw all null labels */ |
8429abe0 | 1532 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) { |
70e98a7f | 1533 | lde_send_labelwithdraw_wcard(ln, MPLS_LABEL_IMPLICIT_NULL); |
45a8eba9 | 1534 | if (ln->v4_enabled) |
70e98a7f DS |
1535 | lde_send_labelwithdraw_wcard( |
1536 | ln, | |
1537 | MPLS_LABEL_IPV4_EXPLICIT_NULL); | |
45a8eba9 | 1538 | if (ln->v6_enabled) |
70e98a7f DS |
1539 | lde_send_labelwithdraw_wcard( |
1540 | ln, | |
1541 | MPLS_LABEL_IPV6_EXPLICIT_NULL); | |
be54d744 | 1542 | } |
8429abe0 | 1543 | |
be54d744 RW |
1544 | /* update label of connected routes */ |
1545 | RB_FOREACH(f, fec_tree, &ft) { | |
1546 | fn = (struct fec_node *)f; | |
1547 | if (fn->local_label > MPLS_LABEL_RESERVED_MAX) | |
1548 | continue; | |
8429abe0 | 1549 | |
be54d744 RW |
1550 | switch (af) { |
1551 | case AF_INET: | |
1552 | if (fn->fec.type != FEC_TYPE_IPV4) | |
1553 | continue; | |
1554 | break; | |
1555 | case AF_INET6: | |
1556 | if (fn->fec.type != FEC_TYPE_IPV6) | |
1557 | continue; | |
1558 | break; | |
1559 | default: | |
1560 | fatalx("lde_change_egress_label: unknown af"); | |
8429abe0 RW |
1561 | } |
1562 | ||
8cb1fc45 | 1563 | fn->local_label = lde_update_label(fn); |
45a8eba9 RW |
1564 | if (fn->local_label != NO_LABEL) |
1565 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
1566 | lde_send_labelmapping(ln, fn, 0); | |
be54d744 RW |
1567 | } |
1568 | RB_FOREACH(ln, nbr_tree, &lde_nbrs) | |
8429abe0 RW |
1569 | lde_imsg_compose_ldpe(IMSG_MAPPING_ADD_END, ln->peerid, 0, |
1570 | NULL, 0); | |
8429abe0 RW |
1571 | } |
1572 | ||
1573 | static int | |
1574 | lde_address_add(struct lde_nbr *ln, struct lde_addr *lde_addr) | |
1575 | { | |
1576 | struct lde_addr *new; | |
1577 | ||
1578 | if (lde_address_find(ln, lde_addr->af, &lde_addr->addr) != NULL) | |
1579 | return (-1); | |
1580 | ||
1581 | if ((new = calloc(1, sizeof(*new))) == NULL) | |
1582 | fatal(__func__); | |
1583 | ||
1584 | new->af = lde_addr->af; | |
1585 | new->addr = lde_addr->addr; | |
1586 | TAILQ_INSERT_TAIL(&ln->addr_list, new, entry); | |
1587 | ||
1588 | /* reevaluate the previously received mappings from this neighbor */ | |
1589 | lde_nbr_addr_update(ln, lde_addr, 0); | |
1590 | ||
1591 | return (0); | |
1592 | } | |
1593 | ||
1594 | static int | |
1595 | lde_address_del(struct lde_nbr *ln, struct lde_addr *lde_addr) | |
1596 | { | |
1597 | lde_addr = lde_address_find(ln, lde_addr->af, &lde_addr->addr); | |
1598 | if (lde_addr == NULL) | |
1599 | return (-1); | |
1600 | ||
1601 | /* reevaluate the previously received mappings from this neighbor */ | |
1602 | lde_nbr_addr_update(ln, lde_addr, 1); | |
1603 | ||
1604 | TAILQ_REMOVE(&ln->addr_list, lde_addr, entry); | |
1605 | free(lde_addr); | |
1606 | ||
1607 | return (0); | |
1608 | } | |
1609 | ||
1610 | struct lde_addr * | |
1611 | lde_address_find(struct lde_nbr *ln, int af, union ldpd_addr *addr) | |
1612 | { | |
1613 | struct lde_addr *lde_addr; | |
1614 | ||
1615 | TAILQ_FOREACH(lde_addr, &ln->addr_list, entry) | |
1616 | if (lde_addr->af == af && | |
1617 | ldp_addrcmp(af, &lde_addr->addr, addr) == 0) | |
1618 | return (lde_addr); | |
1619 | ||
1620 | return (NULL); | |
1621 | } | |
1622 | ||
1623 | static void | |
1624 | lde_address_list_free(struct lde_nbr *ln) | |
1625 | { | |
1626 | struct lde_addr *lde_addr; | |
1627 | ||
a43ad4fe | 1628 | while ((lde_addr = TAILQ_POP_FIRST(&ln->addr_list, entry)) != NULL) |
8429abe0 | 1629 | free(lde_addr); |
8429abe0 | 1630 | } |
fea12efb | 1631 | |
d7c0a89a | 1632 | static void zclient_sync_init(unsigned short instance) |
5afba51d RW |
1633 | { |
1634 | /* Initialize special zclient for synchronous message exchanges. */ | |
26f63a1e | 1635 | zclient_sync = zclient_new(master, &zclient_options_default); |
5afba51d RW |
1636 | zclient_sync->sock = -1; |
1637 | zclient_sync->redist_default = ZEBRA_ROUTE_LDP; | |
1638 | zclient_sync->instance = instance; | |
342213ea DS |
1639 | zclient_sync->privs = &lde_privs; |
1640 | ||
5afba51d RW |
1641 | while (zclient_socket_connect(zclient_sync) < 0) { |
1642 | log_warnx("Error connecting synchronous zclient!"); | |
1643 | sleep(1); | |
1644 | } | |
fa84d193 DL |
1645 | /* make socket non-blocking */ |
1646 | sock_set_nonblock(zclient_sync->sock); | |
5afba51d RW |
1647 | |
1648 | /* Connect to label manager */ | |
f533be73 | 1649 | while (lm_label_manager_connect(zclient_sync, 0) != 0) { |
5afba51d RW |
1650 | log_warnx("Error connecting to label manager!"); |
1651 | sleep(1); | |
1652 | } | |
1653 | } | |
1654 | ||
fea12efb | 1655 | static void |
1656 | lde_del_label_chunk(void *val) | |
1657 | { | |
1658 | free(val); | |
1659 | } | |
5afba51d | 1660 | |
f4ec681c BA |
1661 | static int |
1662 | lde_release_label_chunk(uint32_t start, uint32_t end) | |
1663 | { | |
1664 | int ret; | |
1665 | ||
1666 | ret = lm_release_label_chunk(zclient_sync, start, end); | |
1667 | if (ret < 0) { | |
1668 | log_warnx("Error releasing label chunk!"); | |
1669 | return (-1); | |
1670 | } | |
1671 | return (0); | |
1672 | } | |
1673 | ||
fea12efb | 1674 | static int |
1675 | lde_get_label_chunk(void) | |
1676 | { | |
5afba51d RW |
1677 | int ret; |
1678 | uint32_t start, end; | |
fea12efb | 1679 | |
08e4b244 | 1680 | debug_labels("getting label chunk (size %u)", CHUNK_SIZE); |
0e3b6a92 EDP |
1681 | ret = lm_get_label_chunk(zclient_sync, 0, MPLS_LABEL_BASE_ANY, |
1682 | CHUNK_SIZE, &start, &end); | |
5afba51d | 1683 | if (ret < 0) { |
fea12efb | 1684 | log_warnx("Error getting label chunk!"); |
fea12efb | 1685 | return -1; |
1686 | } | |
1687 | ||
1688 | on_get_label_chunk_response(start, end); | |
1689 | ||
5afba51d | 1690 | return (0); |
fea12efb | 1691 | } |
5afba51d | 1692 | |
fea12efb | 1693 | static void |
1694 | lde_label_list_init(void) | |
1695 | { | |
1696 | label_chunk_list = list_new(); | |
1697 | label_chunk_list->del = lde_del_label_chunk; | |
1698 | ||
1699 | /* get first chunk */ | |
73be9aeb | 1700 | while (lde_get_label_chunk () != 0) { |
f2232fdf | 1701 | log_warnx("Error getting first label chunk!"); |
d1fcf957 | 1702 | sleep(1); |
fea12efb | 1703 | } |
1704 | } | |
1705 | ||
1706 | static void | |
1707 | on_get_label_chunk_response(uint32_t start, uint32_t end) | |
1708 | { | |
1709 | struct label_chunk *new_label_chunk; | |
1710 | ||
08e4b244 | 1711 | debug_labels("label chunk assign: %u - %u", start, end); |
fea12efb | 1712 | |
1713 | new_label_chunk = calloc(1, sizeof(struct label_chunk)); | |
66749b59 | 1714 | if (!new_label_chunk) { |
1715 | log_warn("Error trying to allocate label chunk %u - %u", start, end); | |
1716 | return; | |
1717 | } | |
fea12efb | 1718 | |
1719 | new_label_chunk->start = start; | |
1720 | new_label_chunk->end = end; | |
1721 | new_label_chunk->used_mask = 0; | |
1722 | ||
1723 | listnode_add(label_chunk_list, (void *)new_label_chunk); | |
1724 | ||
1725 | /* let's update current if needed */ | |
1726 | if (!current_label_chunk) | |
1727 | current_label_chunk = listtail(label_chunk_list); | |
1728 | } | |
1729 | ||
f4ec681c BA |
1730 | void |
1731 | lde_free_label(uint32_t label) | |
1732 | { | |
1733 | struct listnode *node; | |
1734 | struct label_chunk *label_chunk; | |
1735 | uint64_t pos; | |
1736 | ||
1737 | for (ALL_LIST_ELEMENTS_RO(label_chunk_list, node, label_chunk)) { | |
1738 | if (label <= label_chunk->end && label >= label_chunk->start) { | |
1739 | pos = 1ULL << (label - label_chunk->start); | |
1740 | label_chunk->used_mask &= ~pos; | |
1741 | /* if nobody is using this chunk and it's not current_label_chunk, then free it */ | |
1742 | if (!label_chunk->used_mask && (current_label_chunk != node)) { | |
1743 | if (lde_release_label_chunk(label_chunk->start, label_chunk->end) != 0) | |
1744 | log_warnx("%s: Error releasing label chunk!", __func__); | |
1745 | else { | |
1746 | listnode_delete(label_chunk_list, label_chunk); | |
1747 | lde_del_label_chunk(label_chunk); | |
1748 | } | |
1749 | } | |
1750 | break; | |
1751 | } | |
1752 | } | |
1753 | return; | |
1754 | } | |
1755 | ||
fea12efb | 1756 | static uint32_t |
1757 | lde_get_next_label(void) | |
1758 | { | |
5afba51d | 1759 | struct label_chunk *label_chunk; |
2a178cdd RW |
1760 | uint32_t i, size; |
1761 | uint64_t pos; | |
5afba51d | 1762 | uint32_t label = NO_LABEL; |
fea12efb | 1763 | |
1764 | while (current_label_chunk) { | |
1765 | label_chunk = listgetdata(current_label_chunk); | |
1766 | if (!label_chunk) | |
1767 | goto end; | |
1768 | ||
1769 | /* try to get next free label in currently used label chunk */ | |
1770 | size = label_chunk->end - label_chunk->start + 1; | |
1771 | for (i = 0, pos = 1; i < size; i++, pos <<= 1) { | |
1772 | if (!(pos & label_chunk->used_mask)) { | |
1773 | label_chunk->used_mask |= pos; | |
1774 | label = label_chunk->start + i; | |
1775 | goto end; | |
1776 | } | |
1777 | } | |
1778 | current_label_chunk = listnextnode(current_label_chunk); | |
1779 | } | |
1780 | ||
1781 | end: | |
1782 | /* we moved till the last chunk, or were not able to find a label, | |
1783 | so let's ask for another one */ | |
5afba51d RW |
1784 | if (!current_label_chunk || |
1785 | current_label_chunk == listtail(label_chunk_list) || | |
1786 | label == NO_LABEL) { | |
fea12efb | 1787 | if (lde_get_label_chunk() != 0) |
1788 | log_warn("%s: Error getting label chunk!", __func__); | |
1789 | ||
1790 | } | |
1791 | ||
5afba51d | 1792 | return (label); |
fea12efb | 1793 | } |