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2d33f157 | 1 | /* |
2 | * Server side of OSPF API. | |
3 | * Copyright (C) 2001, 2002 Ralph Keller | |
44038c7a | 4 | * Copyright (c) 2022, LabN Consulting, L.L.C. |
2d33f157 | 5 | * |
6 | * This file is part of GNU Zebra. | |
896014f4 | 7 | * |
2d33f157 | 8 | * GNU Zebra is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published | |
10 | * by the Free Software Foundation; either version 2, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | * GNU Zebra is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
896014f4 DL |
18 | * You should have received a copy of the GNU General Public License along |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
2d33f157 | 21 | */ |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #ifdef SUPPORT_OSPF_API | |
2d33f157 | 26 | |
27 | #include "linklist.h" | |
28 | #include "prefix.h" | |
29 | #include "if.h" | |
30 | #include "table.h" | |
31 | #include "memory.h" | |
32 | #include "command.h" | |
33 | #include "vty.h" | |
34 | #include "stream.h" | |
35 | #include "log.h" | |
36 | #include "thread.h" | |
37 | #include "hash.h" | |
d62a17ae | 38 | #include "sockunion.h" /* for inet_aton() */ |
2d33f157 | 39 | #include "buffer.h" |
40 | ||
41 | #include <sys/types.h> | |
42 | ||
d62a17ae | 43 | #include "ospfd/ospfd.h" /* for "struct thread_master" */ |
2d33f157 | 44 | #include "ospfd/ospf_interface.h" |
45 | #include "ospfd/ospf_ism.h" | |
46 | #include "ospfd/ospf_asbr.h" | |
47 | #include "ospfd/ospf_lsa.h" | |
48 | #include "ospfd/ospf_lsdb.h" | |
49 | #include "ospfd/ospf_neighbor.h" | |
50 | #include "ospfd/ospf_nsm.h" | |
51 | #include "ospfd/ospf_flood.h" | |
52 | #include "ospfd/ospf_packet.h" | |
53 | #include "ospfd/ospf_spf.h" | |
54 | #include "ospfd/ospf_dump.h" | |
55 | #include "ospfd/ospf_route.h" | |
56 | #include "ospfd/ospf_ase.h" | |
57 | #include "ospfd/ospf_zebra.h" | |
85c9b439 | 58 | #include "ospfd/ospf_errors.h" |
2d33f157 | 59 | |
60 | #include "ospfd/ospf_api.h" | |
61 | #include "ospfd/ospf_apiserver.h" | |
62 | ||
63 | /* This is an implementation of an API to the OSPF daemon that allows | |
64 | * external applications to access the OSPF daemon through socket | |
65 | * connections. The application can use this API to inject its own | |
66 | * opaque LSAs and flood them to other OSPF daemons. Other OSPF | |
67 | * daemons then receive these LSAs and inform applications through the | |
68 | * API by sending a corresponding message. The application can also | |
69 | * register to receive all LSA types (in addition to opaque types) and | |
70 | * use this information to reconstruct the OSPF's LSDB. The OSPF | |
71 | * daemon supports multiple applications concurrently. */ | |
72 | ||
73 | /* List of all active connections. */ | |
87d6f87a | 74 | struct list *apiserver_list; |
2d33f157 | 75 | |
76 | /* ----------------------------------------------------------- | |
77 | * Functions to lookup interfaces | |
78 | * ----------------------------------------------------------- | |
79 | */ | |
80 | ||
d62a17ae | 81 | struct ospf_interface *ospf_apiserver_if_lookup_by_addr(struct in_addr address) |
2d33f157 | 82 | { |
d62a17ae | 83 | struct listnode *node, *nnode; |
84 | struct ospf_interface *oi; | |
b5a8894d | 85 | struct ospf *ospf = NULL; |
99b7c5d6 | 86 | |
b5a8894d CS |
87 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
88 | if (!ospf) | |
d62a17ae | 89 | return NULL; |
2d33f157 | 90 | |
d62a17ae | 91 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) |
92 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
93 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
94 | return oi; | |
87d6f87a | 95 | |
d62a17ae | 96 | return NULL; |
2d33f157 | 97 | } |
98 | ||
d62a17ae | 99 | struct ospf_interface *ospf_apiserver_if_lookup_by_ifp(struct interface *ifp) |
2d33f157 | 100 | { |
d62a17ae | 101 | struct listnode *node, *nnode; |
102 | struct ospf_interface *oi; | |
b5a8894d | 103 | struct ospf *ospf = NULL; |
99b7c5d6 | 104 | |
b5a8894d CS |
105 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
106 | if (!ospf) | |
d62a17ae | 107 | return NULL; |
2d33f157 | 108 | |
d62a17ae | 109 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) |
110 | if (oi->ifp == ifp) | |
111 | return oi; | |
87d6f87a | 112 | |
d62a17ae | 113 | return NULL; |
2d33f157 | 114 | } |
115 | ||
116 | /* ----------------------------------------------------------- | |
117 | * Initialization | |
118 | * ----------------------------------------------------------- | |
119 | */ | |
120 | ||
d62a17ae | 121 | unsigned short ospf_apiserver_getport(void) |
2d33f157 | 122 | { |
d62a17ae | 123 | struct servent *sp = getservbyname("ospfapi", "tcp"); |
2d33f157 | 124 | |
d62a17ae | 125 | return sp ? ntohs(sp->s_port) : OSPF_API_SYNC_PORT; |
2d33f157 | 126 | } |
127 | ||
128 | /* Initialize OSPF API module. Invoked from ospf_opaque_init() */ | |
d62a17ae | 129 | int ospf_apiserver_init(void) |
2d33f157 | 130 | { |
d62a17ae | 131 | int fd; |
132 | int rc = -1; | |
133 | ||
134 | /* Create new socket for synchronous messages. */ | |
135 | fd = ospf_apiserver_serv_sock_family(ospf_apiserver_getport(), AF_INET); | |
136 | ||
137 | if (fd < 0) | |
138 | goto out; | |
139 | ||
140 | /* Schedule new thread that handles accepted connections. */ | |
141 | ospf_apiserver_event(OSPF_APISERVER_ACCEPT, fd, NULL); | |
142 | ||
143 | /* Initialize list that keeps track of all connections. */ | |
144 | apiserver_list = list_new(); | |
145 | ||
146 | /* Register opaque-independent call back functions. These functions | |
147 | are invoked on ISM, NSM changes and LSA update and LSA deletes */ | |
148 | rc = ospf_register_opaque_functab( | |
149 | 0 /* all LSAs */, 0 /* all opaque types */, | |
150 | ospf_apiserver_new_if, ospf_apiserver_del_if, | |
151 | ospf_apiserver_ism_change, ospf_apiserver_nsm_change, NULL, | |
152 | NULL, NULL, NULL, /* ospf_apiserver_show_info */ | |
153 | NULL, /* originator_func */ | |
154 | NULL, /* ospf_apiserver_lsa_refresher */ | |
155 | ospf_apiserver_lsa_update, ospf_apiserver_lsa_delete); | |
156 | if (rc != 0) { | |
ade6974d | 157 | flog_warn( |
cf444bcf | 158 | EC_OSPF_OPAQUE_REGISTRATION, |
ade6974d | 159 | "ospf_apiserver_init: Failed to register opaque type [0/0]"); |
d62a17ae | 160 | } |
161 | ||
162 | rc = 0; | |
2d33f157 | 163 | |
164 | out: | |
d62a17ae | 165 | return rc; |
2d33f157 | 166 | } |
167 | ||
168 | /* Terminate OSPF API module. */ | |
d62a17ae | 169 | void ospf_apiserver_term(void) |
2d33f157 | 170 | { |
d62a17ae | 171 | struct ospf_apiserver *apiserv; |
172 | ||
173 | /* Unregister wildcard [0/0] type */ | |
174 | ospf_delete_opaque_functab(0 /* all LSAs */, 0 /* all opaque types */); | |
175 | ||
176 | /* | |
177 | * Free all client instances. ospf_apiserver_free removes the node | |
178 | * from the list, so we examine the head of the list anew each time. | |
179 | */ | |
180 | while (apiserver_list | |
181 | && (apiserv = listgetdata(listhead(apiserver_list))) != NULL) | |
182 | ospf_apiserver_free(apiserv); | |
183 | ||
184 | /* Free client list itself */ | |
185 | if (apiserver_list) | |
6a154c88 | 186 | list_delete(&apiserver_list); |
d62a17ae | 187 | |
188 | /* Free wildcard list */ | |
189 | /* XXX */ | |
2d33f157 | 190 | } |
191 | ||
d7c0a89a QY |
192 | static struct ospf_apiserver *lookup_apiserver(uint8_t lsa_type, |
193 | uint8_t opaque_type) | |
2d33f157 | 194 | { |
d62a17ae | 195 | struct listnode *n1, *n2; |
196 | struct registered_opaque_type *r; | |
197 | struct ospf_apiserver *apiserv, *found = NULL; | |
198 | ||
199 | /* XXX: this approaches O(n**2) */ | |
200 | for (ALL_LIST_ELEMENTS_RO(apiserver_list, n1, apiserv)) { | |
201 | for (ALL_LIST_ELEMENTS_RO(apiserv->opaque_types, n2, r)) | |
202 | if (r->lsa_type == lsa_type | |
203 | && r->opaque_type == opaque_type) { | |
204 | found = apiserv; | |
205 | goto out; | |
206 | } | |
207 | } | |
2d33f157 | 208 | out: |
d62a17ae | 209 | return found; |
2d33f157 | 210 | } |
211 | ||
d62a17ae | 212 | static struct ospf_apiserver *lookup_apiserver_by_lsa(struct ospf_lsa *lsa) |
2d33f157 | 213 | { |
d62a17ae | 214 | struct lsa_header *lsah = lsa->data; |
215 | struct ospf_apiserver *found = NULL; | |
216 | ||
217 | if (IS_OPAQUE_LSA(lsah->type)) { | |
218 | found = lookup_apiserver( | |
219 | lsah->type, GET_OPAQUE_TYPE(ntohl(lsah->id.s_addr))); | |
220 | } | |
221 | return found; | |
2d33f157 | 222 | } |
223 | ||
224 | /* ----------------------------------------------------------- | |
78dfa0c7 | 225 | * Following are functions to manage client connections. |
2d33f157 | 226 | * ----------------------------------------------------------- |
227 | */ | |
d62a17ae | 228 | static int ospf_apiserver_new_lsa_hook(struct ospf_lsa *lsa) |
2d33f157 | 229 | { |
d62a17ae | 230 | if (IS_DEBUG_OSPF_EVENT) |
231 | zlog_debug("API: Put LSA(%p)[%s] into reserve, total=%ld", | |
232 | (void *)lsa, dump_lsa_key(lsa), lsa->lsdb->total); | |
233 | return 0; | |
2d33f157 | 234 | } |
235 | ||
d62a17ae | 236 | static int ospf_apiserver_del_lsa_hook(struct ospf_lsa *lsa) |
2d33f157 | 237 | { |
d62a17ae | 238 | if (IS_DEBUG_OSPF_EVENT) |
239 | zlog_debug("API: Get LSA(%p)[%s] from reserve, total=%ld", | |
240 | (void *)lsa, dump_lsa_key(lsa), lsa->lsdb->total); | |
241 | return 0; | |
2d33f157 | 242 | } |
243 | ||
244 | /* Allocate new connection structure. */ | |
d62a17ae | 245 | struct ospf_apiserver *ospf_apiserver_new(int fd_sync, int fd_async) |
2d33f157 | 246 | { |
d62a17ae | 247 | struct ospf_apiserver *new = |
248 | XMALLOC(MTYPE_OSPF_APISERVER, sizeof(struct ospf_apiserver)); | |
2d33f157 | 249 | |
d62a17ae | 250 | new->filter = XMALLOC(MTYPE_OSPF_APISERVER_MSGFILTER, |
251 | sizeof(struct lsa_filter_type)); | |
2d33f157 | 252 | |
d62a17ae | 253 | new->fd_sync = fd_sync; |
254 | new->fd_async = fd_async; | |
2d33f157 | 255 | |
d62a17ae | 256 | /* list of registered opaque types that application uses */ |
257 | new->opaque_types = list_new(); | |
2d33f157 | 258 | |
d62a17ae | 259 | /* Initialize temporary strage for LSA instances to be refreshed. */ |
260 | memset(&new->reserve, 0, sizeof(struct ospf_lsdb)); | |
261 | ospf_lsdb_init(&new->reserve); | |
2d33f157 | 262 | |
d62a17ae | 263 | new->reserve.new_lsa_hook = ospf_apiserver_new_lsa_hook; /* debug */ |
264 | new->reserve.del_lsa_hook = ospf_apiserver_del_lsa_hook; /* debug */ | |
2d33f157 | 265 | |
d62a17ae | 266 | new->out_sync_fifo = msg_fifo_new(); |
267 | new->out_async_fifo = msg_fifo_new(); | |
268 | new->t_sync_read = NULL; | |
2d33f157 | 269 | #ifdef USE_ASYNC_READ |
d62a17ae | 270 | new->t_async_read = NULL; |
2d33f157 | 271 | #endif /* USE_ASYNC_READ */ |
d62a17ae | 272 | new->t_sync_write = NULL; |
273 | new->t_async_write = NULL; | |
2d33f157 | 274 | |
d62a17ae | 275 | new->filter->typemask = 0; /* filter all LSAs */ |
276 | new->filter->origin = ANY_ORIGIN; | |
277 | new->filter->num_areas = 0; | |
2d33f157 | 278 | |
d62a17ae | 279 | return new; |
2d33f157 | 280 | } |
281 | ||
14416b1f | 282 | void ospf_apiserver_event(enum ospf_apiserver_event event, int fd, |
d62a17ae | 283 | struct ospf_apiserver *apiserv) |
2d33f157 | 284 | { |
d62a17ae | 285 | switch (event) { |
286 | case OSPF_APISERVER_ACCEPT: | |
287 | (void)thread_add_read(master, ospf_apiserver_accept, apiserv, | |
288 | fd, NULL); | |
289 | break; | |
290 | case OSPF_APISERVER_SYNC_READ: | |
291 | apiserv->t_sync_read = NULL; | |
292 | thread_add_read(master, ospf_apiserver_read, apiserv, fd, | |
293 | &apiserv->t_sync_read); | |
294 | break; | |
2d33f157 | 295 | #ifdef USE_ASYNC_READ |
d62a17ae | 296 | case OSPF_APISERVER_ASYNC_READ: |
297 | apiserv->t_async_read = NULL; | |
298 | thread_add_read(master, ospf_apiserver_read, apiserv, fd, | |
299 | &apiserv->t_async_read); | |
300 | break; | |
2d33f157 | 301 | #endif /* USE_ASYNC_READ */ |
d62a17ae | 302 | case OSPF_APISERVER_SYNC_WRITE: |
303 | thread_add_write(master, ospf_apiserver_sync_write, apiserv, fd, | |
304 | &apiserv->t_sync_write); | |
305 | break; | |
306 | case OSPF_APISERVER_ASYNC_WRITE: | |
307 | thread_add_write(master, ospf_apiserver_async_write, apiserv, | |
308 | fd, &apiserv->t_async_write); | |
309 | break; | |
310 | } | |
2d33f157 | 311 | } |
312 | ||
313 | /* Free instance. First unregister all opaque types used by | |
d62a17ae | 314 | application, flush opaque LSAs injected by application |
2d33f157 | 315 | from network and close connection. */ |
d62a17ae | 316 | void ospf_apiserver_free(struct ospf_apiserver *apiserv) |
2d33f157 | 317 | { |
d62a17ae | 318 | struct listnode *node; |
2d33f157 | 319 | |
d62a17ae | 320 | /* Cancel read and write threads. */ |
bc1f09de | 321 | THREAD_OFF(apiserv->t_sync_read); |
2d33f157 | 322 | #ifdef USE_ASYNC_READ |
bc1f09de | 323 | THREAD_OFF(apiserv->t_async_read); |
2d33f157 | 324 | #endif /* USE_ASYNC_READ */ |
bc1f09de DS |
325 | THREAD_OFF(apiserv->t_sync_write); |
326 | THREAD_OFF(apiserv->t_async_write); | |
2d33f157 | 327 | |
d62a17ae | 328 | /* Unregister all opaque types that application registered |
329 | and flush opaque LSAs if still in LSDB. */ | |
2d33f157 | 330 | |
d62a17ae | 331 | while ((node = listhead(apiserv->opaque_types)) != NULL) { |
332 | struct registered_opaque_type *regtype = listgetdata(node); | |
2d33f157 | 333 | |
d62a17ae | 334 | ospf_apiserver_unregister_opaque_type( |
335 | apiserv, regtype->lsa_type, regtype->opaque_type); | |
336 | } | |
2d33f157 | 337 | |
d62a17ae | 338 | /* Close connections to OSPFd. */ |
339 | if (apiserv->fd_sync > 0) { | |
340 | close(apiserv->fd_sync); | |
341 | } | |
2d33f157 | 342 | |
d62a17ae | 343 | if (apiserv->fd_async > 0) { |
344 | close(apiserv->fd_async); | |
345 | } | |
2d33f157 | 346 | |
d62a17ae | 347 | /* Free fifos */ |
348 | msg_fifo_free(apiserv->out_sync_fifo); | |
349 | msg_fifo_free(apiserv->out_async_fifo); | |
2d33f157 | 350 | |
d62a17ae | 351 | /* Clear temporary strage for LSA instances to be refreshed. */ |
352 | ospf_lsdb_delete_all(&apiserv->reserve); | |
353 | ospf_lsdb_cleanup(&apiserv->reserve); | |
2d33f157 | 354 | |
d62a17ae | 355 | /* Remove from the list of active clients. */ |
356 | listnode_delete(apiserver_list, apiserv); | |
2d33f157 | 357 | |
d62a17ae | 358 | if (IS_DEBUG_OSPF_EVENT) |
359 | zlog_debug("API: Delete apiserv(%p), total#(%d)", | |
360 | (void *)apiserv, apiserver_list->count); | |
2d33f157 | 361 | |
d62a17ae | 362 | /* And free instance. */ |
363 | XFREE(MTYPE_OSPF_APISERVER, apiserv); | |
2d33f157 | 364 | } |
365 | ||
cc9f21da | 366 | void ospf_apiserver_read(struct thread *thread) |
2d33f157 | 367 | { |
d62a17ae | 368 | struct ospf_apiserver *apiserv; |
369 | struct msg *msg; | |
370 | int fd; | |
14416b1f | 371 | enum ospf_apiserver_event event; |
d62a17ae | 372 | |
373 | apiserv = THREAD_ARG(thread); | |
374 | fd = THREAD_FD(thread); | |
375 | ||
376 | if (fd == apiserv->fd_sync) { | |
377 | event = OSPF_APISERVER_SYNC_READ; | |
378 | apiserv->t_sync_read = NULL; | |
379 | ||
380 | if (IS_DEBUG_OSPF_EVENT) | |
96b663a3 MS |
381 | zlog_debug("API: ospf_apiserver_read: Peer: %pI4/%u", |
382 | &apiserv->peer_sync.sin_addr, | |
d62a17ae | 383 | ntohs(apiserv->peer_sync.sin_port)); |
384 | } | |
2d33f157 | 385 | #ifdef USE_ASYNC_READ |
d62a17ae | 386 | else if (fd == apiserv->fd_async) { |
387 | event = OSPF_APISERVER_ASYNC_READ; | |
388 | apiserv->t_async_read = NULL; | |
389 | ||
390 | if (IS_DEBUG_OSPF_EVENT) | |
96b663a3 MS |
391 | zlog_debug("API: ospf_apiserver_read: Peer: %pI4/%u", |
392 | &apiserv->peer_async.sin_addr, | |
d62a17ae | 393 | ntohs(apiserv->peer_async.sin_port)); |
394 | } | |
2d33f157 | 395 | #endif /* USE_ASYNC_READ */ |
d62a17ae | 396 | else { |
397 | zlog_warn("ospf_apiserver_read: Unknown fd(%d)", fd); | |
398 | ospf_apiserver_free(apiserv); | |
cc9f21da | 399 | return; |
d62a17ae | 400 | } |
2d33f157 | 401 | |
d62a17ae | 402 | /* Read message from fd. */ |
403 | msg = msg_read(fd); | |
404 | if (msg == NULL) { | |
405 | zlog_warn( | |
406 | "ospf_apiserver_read: read failed on fd=%d, closing connection", | |
407 | fd); | |
2d33f157 | 408 | |
d62a17ae | 409 | /* Perform cleanup. */ |
410 | ospf_apiserver_free(apiserv); | |
cc9f21da | 411 | return; |
d62a17ae | 412 | } |
2d33f157 | 413 | |
d62a17ae | 414 | if (IS_DEBUG_OSPF_EVENT) |
415 | msg_print(msg); | |
2d33f157 | 416 | |
d62a17ae | 417 | /* Dispatch to corresponding message handler. */ |
cc9f21da | 418 | ospf_apiserver_handle_msg(apiserv, msg); |
2d33f157 | 419 | |
d62a17ae | 420 | /* Prepare for next message, add read thread. */ |
421 | ospf_apiserver_event(event, fd, apiserv); | |
2d33f157 | 422 | |
d62a17ae | 423 | msg_free(msg); |
2d33f157 | 424 | } |
425 | ||
cc9f21da | 426 | void ospf_apiserver_sync_write(struct thread *thread) |
2d33f157 | 427 | { |
d62a17ae | 428 | struct ospf_apiserver *apiserv; |
429 | struct msg *msg; | |
430 | int fd; | |
431 | int rc = -1; | |
432 | ||
433 | apiserv = THREAD_ARG(thread); | |
434 | assert(apiserv); | |
435 | fd = THREAD_FD(thread); | |
436 | ||
437 | apiserv->t_sync_write = NULL; | |
438 | ||
439 | /* Sanity check */ | |
440 | if (fd != apiserv->fd_sync) { | |
441 | zlog_warn("ospf_apiserver_sync_write: Unknown fd=%d", fd); | |
442 | goto out; | |
443 | } | |
444 | ||
445 | if (IS_DEBUG_OSPF_EVENT) | |
96b663a3 MS |
446 | zlog_debug("API: ospf_apiserver_sync_write: Peer: %pI4/%u", |
447 | &apiserv->peer_sync.sin_addr, | |
d62a17ae | 448 | ntohs(apiserv->peer_sync.sin_port)); |
449 | ||
450 | /* Check whether there is really a message in the fifo. */ | |
451 | msg = msg_fifo_pop(apiserv->out_sync_fifo); | |
452 | if (!msg) { | |
453 | zlog_warn( | |
454 | "API: ospf_apiserver_sync_write: No message in Sync-FIFO?"); | |
cc9f21da | 455 | return; |
d62a17ae | 456 | } |
457 | ||
458 | if (IS_DEBUG_OSPF_EVENT) | |
459 | msg_print(msg); | |
460 | ||
461 | rc = msg_write(fd, msg); | |
462 | ||
463 | /* Once a message is dequeued, it should be freed anyway. */ | |
464 | msg_free(msg); | |
465 | ||
466 | if (rc < 0) { | |
467 | zlog_warn("ospf_apiserver_sync_write: write failed on fd=%d", | |
468 | fd); | |
469 | goto out; | |
470 | } | |
471 | ||
472 | ||
473 | /* If more messages are in sync message fifo, schedule write thread. */ | |
474 | if (msg_fifo_head(apiserv->out_sync_fifo)) { | |
475 | ospf_apiserver_event(OSPF_APISERVER_SYNC_WRITE, | |
476 | apiserv->fd_sync, apiserv); | |
477 | } | |
478 | ||
479 | out: | |
480 | ||
481 | if (rc < 0) { | |
482 | /* Perform cleanup and disconnect with peer */ | |
483 | ospf_apiserver_free(apiserv); | |
484 | } | |
2d33f157 | 485 | } |
486 | ||
487 | ||
cc9f21da | 488 | void ospf_apiserver_async_write(struct thread *thread) |
2d33f157 | 489 | { |
d62a17ae | 490 | struct ospf_apiserver *apiserv; |
491 | struct msg *msg; | |
492 | int fd; | |
493 | int rc = -1; | |
494 | ||
495 | apiserv = THREAD_ARG(thread); | |
496 | assert(apiserv); | |
497 | fd = THREAD_FD(thread); | |
498 | ||
499 | apiserv->t_async_write = NULL; | |
500 | ||
501 | /* Sanity check */ | |
502 | if (fd != apiserv->fd_async) { | |
503 | zlog_warn("ospf_apiserver_async_write: Unknown fd=%d", fd); | |
504 | goto out; | |
505 | } | |
506 | ||
507 | if (IS_DEBUG_OSPF_EVENT) | |
96b663a3 MS |
508 | zlog_debug("API: ospf_apiserver_async_write: Peer: %pI4/%u", |
509 | &apiserv->peer_async.sin_addr, | |
d62a17ae | 510 | ntohs(apiserv->peer_async.sin_port)); |
511 | ||
512 | /* Check whether there is really a message in the fifo. */ | |
513 | msg = msg_fifo_pop(apiserv->out_async_fifo); | |
514 | if (!msg) { | |
515 | zlog_warn( | |
516 | "API: ospf_apiserver_async_write: No message in Async-FIFO?"); | |
cc9f21da | 517 | return; |
d62a17ae | 518 | } |
519 | ||
520 | if (IS_DEBUG_OSPF_EVENT) | |
521 | msg_print(msg); | |
522 | ||
523 | rc = msg_write(fd, msg); | |
524 | ||
525 | /* Once a message is dequeued, it should be freed anyway. */ | |
526 | msg_free(msg); | |
527 | ||
528 | if (rc < 0) { | |
529 | zlog_warn("ospf_apiserver_async_write: write failed on fd=%d", | |
530 | fd); | |
531 | goto out; | |
532 | } | |
533 | ||
534 | ||
535 | /* If more messages are in async message fifo, schedule write thread. */ | |
536 | if (msg_fifo_head(apiserv->out_async_fifo)) { | |
537 | ospf_apiserver_event(OSPF_APISERVER_ASYNC_WRITE, | |
538 | apiserv->fd_async, apiserv); | |
539 | } | |
540 | ||
541 | out: | |
542 | ||
543 | if (rc < 0) { | |
544 | /* Perform cleanup and disconnect with peer */ | |
545 | ospf_apiserver_free(apiserv); | |
546 | } | |
2d33f157 | 547 | } |
548 | ||
549 | ||
d62a17ae | 550 | int ospf_apiserver_serv_sock_family(unsigned short port, int family) |
2d33f157 | 551 | { |
d62a17ae | 552 | union sockunion su; |
553 | int accept_sock; | |
554 | int rc; | |
555 | ||
556 | memset(&su, 0, sizeof(union sockunion)); | |
557 | su.sa.sa_family = family; | |
558 | ||
559 | /* Make new socket */ | |
560 | accept_sock = sockunion_stream_socket(&su); | |
561 | if (accept_sock < 0) | |
562 | return accept_sock; | |
563 | ||
564 | /* This is a server, so reuse address and port */ | |
565 | sockopt_reuseaddr(accept_sock); | |
566 | sockopt_reuseport(accept_sock); | |
567 | ||
568 | /* Bind socket to address and given port. */ | |
569 | rc = sockunion_bind(accept_sock, &su, port, NULL); | |
570 | if (rc < 0) { | |
571 | close(accept_sock); /* Close socket */ | |
572 | return rc; | |
573 | } | |
574 | ||
575 | /* Listen socket under queue length 3. */ | |
576 | rc = listen(accept_sock, 3); | |
577 | if (rc < 0) { | |
578 | zlog_warn("ospf_apiserver_serv_sock_family: listen: %s", | |
579 | safe_strerror(errno)); | |
580 | close(accept_sock); /* Close socket */ | |
581 | return rc; | |
582 | } | |
583 | return accept_sock; | |
2d33f157 | 584 | } |
585 | ||
586 | ||
587 | /* Accept connection request from external applications. For each | |
588 | accepted connection allocate own connection instance. */ | |
cc9f21da | 589 | void ospf_apiserver_accept(struct thread *thread) |
2d33f157 | 590 | { |
d62a17ae | 591 | int accept_sock; |
592 | int new_sync_sock; | |
593 | int new_async_sock; | |
594 | union sockunion su; | |
595 | struct ospf_apiserver *apiserv; | |
596 | struct sockaddr_in peer_async; | |
597 | struct sockaddr_in peer_sync; | |
598 | unsigned int peerlen; | |
599 | int ret; | |
600 | ||
601 | /* THREAD_ARG (thread) is NULL */ | |
602 | accept_sock = THREAD_FD(thread); | |
603 | ||
604 | /* Keep hearing on socket for further connections. */ | |
605 | ospf_apiserver_event(OSPF_APISERVER_ACCEPT, accept_sock, NULL); | |
606 | ||
607 | memset(&su, 0, sizeof(union sockunion)); | |
608 | /* Accept connection for synchronous messages */ | |
609 | new_sync_sock = sockunion_accept(accept_sock, &su); | |
610 | if (new_sync_sock < 0) { | |
611 | zlog_warn("ospf_apiserver_accept: accept: %s", | |
612 | safe_strerror(errno)); | |
cc9f21da | 613 | return; |
d62a17ae | 614 | } |
615 | ||
616 | /* Get port address and port number of peer to make reverse connection. | |
617 | The reverse channel uses the port number of the peer port+1. */ | |
618 | ||
6006b807 | 619 | memset(&peer_sync, 0, sizeof(peer_sync)); |
d62a17ae | 620 | peerlen = sizeof(struct sockaddr_in); |
621 | ||
622 | ret = getpeername(new_sync_sock, (struct sockaddr *)&peer_sync, | |
623 | &peerlen); | |
624 | if (ret < 0) { | |
625 | zlog_warn("ospf_apiserver_accept: getpeername: %s", | |
626 | safe_strerror(errno)); | |
627 | close(new_sync_sock); | |
cc9f21da | 628 | return; |
d62a17ae | 629 | } |
630 | ||
631 | if (IS_DEBUG_OSPF_EVENT) | |
96b663a3 MS |
632 | zlog_debug("API: ospf_apiserver_accept: New peer: %pI4/%u", |
633 | &peer_sync.sin_addr, | |
d62a17ae | 634 | ntohs(peer_sync.sin_port)); |
635 | ||
636 | /* Create new socket for asynchronous messages. */ | |
637 | peer_async = peer_sync; | |
638 | peer_async.sin_port = htons(ntohs(peer_sync.sin_port) + 1); | |
639 | ||
640 | /* Check if remote port number to make reverse connection is valid one. | |
641 | */ | |
642 | if (ntohs(peer_async.sin_port) == ospf_apiserver_getport()) { | |
643 | zlog_warn( | |
96b663a3 MS |
644 | "API: ospf_apiserver_accept: Peer(%pI4/%u): Invalid async port number?", |
645 | &peer_async.sin_addr, | |
d62a17ae | 646 | ntohs(peer_async.sin_port)); |
647 | close(new_sync_sock); | |
cc9f21da | 648 | return; |
d62a17ae | 649 | } |
650 | ||
651 | new_async_sock = socket(AF_INET, SOCK_STREAM, 0); | |
652 | if (new_async_sock < 0) { | |
653 | zlog_warn("ospf_apiserver_accept: socket: %s", | |
654 | safe_strerror(errno)); | |
655 | close(new_sync_sock); | |
cc9f21da | 656 | return; |
d62a17ae | 657 | } |
658 | ||
659 | ret = connect(new_async_sock, (struct sockaddr *)&peer_async, | |
660 | sizeof(struct sockaddr_in)); | |
661 | ||
662 | if (ret < 0) { | |
663 | zlog_warn("ospf_apiserver_accept: connect: %s", | |
664 | safe_strerror(errno)); | |
665 | close(new_sync_sock); | |
666 | close(new_async_sock); | |
cc9f21da | 667 | return; |
d62a17ae | 668 | } |
2d33f157 | 669 | |
670 | #ifdef USE_ASYNC_READ | |
d62a17ae | 671 | #else /* USE_ASYNC_READ */ |
672 | /* Make the asynchronous channel write-only. */ | |
673 | ret = shutdown(new_async_sock, SHUT_RD); | |
674 | if (ret < 0) { | |
675 | zlog_warn("ospf_apiserver_accept: shutdown: %s", | |
676 | safe_strerror(errno)); | |
677 | close(new_sync_sock); | |
678 | close(new_async_sock); | |
cc9f21da | 679 | return; |
d62a17ae | 680 | } |
2d33f157 | 681 | #endif /* USE_ASYNC_READ */ |
682 | ||
d62a17ae | 683 | /* Allocate new server-side connection structure */ |
684 | apiserv = ospf_apiserver_new(new_sync_sock, new_async_sock); | |
2d33f157 | 685 | |
d62a17ae | 686 | /* Add to active connection list */ |
687 | listnode_add(apiserver_list, apiserv); | |
688 | apiserv->peer_sync = peer_sync; | |
689 | apiserv->peer_async = peer_async; | |
2d33f157 | 690 | |
d62a17ae | 691 | /* And add read threads for new connection */ |
692 | ospf_apiserver_event(OSPF_APISERVER_SYNC_READ, new_sync_sock, apiserv); | |
2d33f157 | 693 | #ifdef USE_ASYNC_READ |
d62a17ae | 694 | ospf_apiserver_event(OSPF_APISERVER_ASYNC_READ, new_async_sock, |
695 | apiserv); | |
2d33f157 | 696 | #endif /* USE_ASYNC_READ */ |
697 | ||
d62a17ae | 698 | if (IS_DEBUG_OSPF_EVENT) |
699 | zlog_debug("API: New apiserv(%p), total#(%d)", (void *)apiserv, | |
700 | apiserver_list->count); | |
2d33f157 | 701 | } |
702 | ||
703 | ||
704 | /* ----------------------------------------------------------- | |
705 | * Send reply with return code to client application | |
706 | * ----------------------------------------------------------- | |
707 | */ | |
708 | ||
d62a17ae | 709 | static int ospf_apiserver_send_msg(struct ospf_apiserver *apiserv, |
710 | struct msg *msg) | |
2d33f157 | 711 | { |
d62a17ae | 712 | struct msg_fifo *fifo; |
713 | struct msg *msg2; | |
14416b1f | 714 | enum ospf_apiserver_event event; |
d62a17ae | 715 | int fd; |
716 | ||
717 | switch (msg->hdr.msgtype) { | |
718 | case MSG_REPLY: | |
719 | fifo = apiserv->out_sync_fifo; | |
720 | fd = apiserv->fd_sync; | |
721 | event = OSPF_APISERVER_SYNC_WRITE; | |
722 | break; | |
723 | case MSG_READY_NOTIFY: | |
724 | case MSG_LSA_UPDATE_NOTIFY: | |
725 | case MSG_LSA_DELETE_NOTIFY: | |
726 | case MSG_NEW_IF: | |
727 | case MSG_DEL_IF: | |
728 | case MSG_ISM_CHANGE: | |
729 | case MSG_NSM_CHANGE: | |
149491af | 730 | case MSG_REACHABLE_CHANGE: |
44038c7a | 731 | case MSG_ROUTER_ID_CHANGE: |
d62a17ae | 732 | fifo = apiserv->out_async_fifo; |
733 | fd = apiserv->fd_async; | |
734 | event = OSPF_APISERVER_ASYNC_WRITE; | |
735 | break; | |
736 | default: | |
737 | zlog_warn("ospf_apiserver_send_msg: Unknown message type %d", | |
738 | msg->hdr.msgtype); | |
739 | return -1; | |
740 | } | |
741 | ||
742 | /* Make a copy of the message and put in the fifo. Once the fifo | |
743 | gets drained by the write thread, the message will be freed. */ | |
744 | /* NB: Given "msg" is untouched in this function. */ | |
745 | msg2 = msg_dup(msg); | |
746 | ||
747 | /* Enqueue message into corresponding fifo queue */ | |
748 | msg_fifo_push(fifo, msg2); | |
749 | ||
750 | /* Schedule write thread */ | |
751 | ospf_apiserver_event(event, fd, apiserv); | |
752 | return 0; | |
2d33f157 | 753 | } |
754 | ||
d7c0a89a QY |
755 | int ospf_apiserver_send_reply(struct ospf_apiserver *apiserv, uint32_t seqnr, |
756 | uint8_t rc) | |
2d33f157 | 757 | { |
d62a17ae | 758 | struct msg *msg = new_msg_reply(seqnr, rc); |
759 | int ret; | |
2d33f157 | 760 | |
d62a17ae | 761 | if (!msg) { |
762 | zlog_warn("ospf_apiserver_send_reply: msg_new failed"); | |
2d33f157 | 763 | #ifdef NOTYET |
d62a17ae | 764 | /* Cannot allocate new message. What should we do? */ |
765 | ospf_apiserver_free(apiserv); | |
2d33f157 | 766 | #endif |
d62a17ae | 767 | return -1; |
768 | } | |
2d33f157 | 769 | |
d62a17ae | 770 | ret = ospf_apiserver_send_msg(apiserv, msg); |
771 | msg_free(msg); | |
772 | return ret; | |
2d33f157 | 773 | } |
774 | ||
775 | ||
776 | /* ----------------------------------------------------------- | |
777 | * Generic message dispatching handler function | |
778 | * ----------------------------------------------------------- | |
779 | */ | |
780 | ||
d62a17ae | 781 | int ospf_apiserver_handle_msg(struct ospf_apiserver *apiserv, struct msg *msg) |
2d33f157 | 782 | { |
d62a17ae | 783 | int rc; |
784 | ||
785 | /* Call corresponding message handler function. */ | |
786 | switch (msg->hdr.msgtype) { | |
787 | case MSG_REGISTER_OPAQUETYPE: | |
788 | rc = ospf_apiserver_handle_register_opaque_type(apiserv, msg); | |
789 | break; | |
790 | case MSG_UNREGISTER_OPAQUETYPE: | |
791 | rc = ospf_apiserver_handle_unregister_opaque_type(apiserv, msg); | |
792 | break; | |
793 | case MSG_REGISTER_EVENT: | |
794 | rc = ospf_apiserver_handle_register_event(apiserv, msg); | |
795 | break; | |
796 | case MSG_SYNC_LSDB: | |
797 | rc = ospf_apiserver_handle_sync_lsdb(apiserv, msg); | |
798 | break; | |
799 | case MSG_ORIGINATE_REQUEST: | |
800 | rc = ospf_apiserver_handle_originate_request(apiserv, msg); | |
801 | break; | |
802 | case MSG_DELETE_REQUEST: | |
803 | rc = ospf_apiserver_handle_delete_request(apiserv, msg); | |
804 | break; | |
149491af CH |
805 | case MSG_SYNC_REACHABLE: |
806 | rc = ospf_apiserver_handle_sync_reachable(apiserv, msg); | |
807 | break; | |
97355a6d CH |
808 | case MSG_SYNC_ISM: |
809 | rc = ospf_apiserver_handle_sync_ism(apiserv, msg); | |
810 | break; | |
811 | case MSG_SYNC_NSM: | |
812 | rc = ospf_apiserver_handle_sync_nsm(apiserv, msg); | |
813 | break; | |
44038c7a CH |
814 | case MSG_SYNC_ROUTER_ID: |
815 | rc = ospf_apiserver_handle_sync_router_id(apiserv, msg); | |
816 | break; | |
d62a17ae | 817 | default: |
818 | zlog_warn("ospf_apiserver_handle_msg: Unknown message type: %d", | |
819 | msg->hdr.msgtype); | |
820 | rc = -1; | |
821 | } | |
822 | return rc; | |
2d33f157 | 823 | } |
824 | ||
825 | ||
826 | /* ----------------------------------------------------------- | |
827 | * Following are functions for opaque type registration | |
828 | * ----------------------------------------------------------- | |
829 | */ | |
830 | ||
d62a17ae | 831 | int ospf_apiserver_register_opaque_type(struct ospf_apiserver *apiserv, |
d7c0a89a | 832 | uint8_t lsa_type, uint8_t opaque_type) |
2d33f157 | 833 | { |
d62a17ae | 834 | struct registered_opaque_type *regtype; |
835 | int (*originator_func)(void *arg); | |
836 | int rc; | |
837 | ||
838 | switch (lsa_type) { | |
839 | case OSPF_OPAQUE_LINK_LSA: | |
840 | originator_func = ospf_apiserver_lsa9_originator; | |
841 | break; | |
842 | case OSPF_OPAQUE_AREA_LSA: | |
843 | originator_func = ospf_apiserver_lsa10_originator; | |
844 | break; | |
845 | case OSPF_OPAQUE_AS_LSA: | |
846 | originator_func = ospf_apiserver_lsa11_originator; | |
847 | break; | |
848 | default: | |
849 | zlog_warn("ospf_apiserver_register_opaque_type: lsa_type(%d)", | |
850 | lsa_type); | |
851 | return OSPF_API_ILLEGALLSATYPE; | |
852 | } | |
853 | ||
854 | ||
855 | /* Register opaque function table */ | |
856 | /* NB: Duplicated registration will be detected inside the function. */ | |
857 | rc = ospf_register_opaque_functab( | |
858 | lsa_type, opaque_type, NULL, /* ospf_apiserver_new_if */ | |
859 | NULL, /* ospf_apiserver_del_if */ | |
860 | NULL, /* ospf_apiserver_ism_change */ | |
861 | NULL, /* ospf_apiserver_nsm_change */ | |
862 | NULL, NULL, NULL, ospf_apiserver_show_info, originator_func, | |
863 | ospf_apiserver_lsa_refresher, | |
864 | NULL, /* ospf_apiserver_lsa_update */ | |
865 | NULL /* ospf_apiserver_lsa_delete */); | |
866 | ||
867 | if (rc != 0) { | |
cf444bcf | 868 | flog_warn(EC_OSPF_OPAQUE_REGISTRATION, |
85c9b439 | 869 | "Failed to register opaque type [%d/%d]", lsa_type, |
d62a17ae | 870 | opaque_type); |
871 | return OSPF_API_OPAQUETYPEINUSE; | |
872 | } | |
873 | ||
874 | /* Remember the opaque type that application registers so when | |
875 | connection shuts down, we can flush all LSAs of this opaque | |
876 | type. */ | |
877 | ||
878 | regtype = XCALLOC(MTYPE_OSPF_APISERVER, | |
879 | sizeof(struct registered_opaque_type)); | |
880 | regtype->lsa_type = lsa_type; | |
881 | regtype->opaque_type = opaque_type; | |
882 | ||
883 | /* Add to list of registered opaque types */ | |
884 | listnode_add(apiserv->opaque_types, regtype); | |
885 | ||
886 | if (IS_DEBUG_OSPF_EVENT) | |
887 | zlog_debug( | |
3efd0893 | 888 | "API: Add LSA-type(%d)/Opaque-type(%d) into apiserv(%p), total#(%d)", |
d62a17ae | 889 | lsa_type, opaque_type, (void *)apiserv, |
890 | listcount(apiserv->opaque_types)); | |
891 | ||
892 | return 0; | |
2d33f157 | 893 | } |
894 | ||
d62a17ae | 895 | int ospf_apiserver_unregister_opaque_type(struct ospf_apiserver *apiserv, |
d7c0a89a | 896 | uint8_t lsa_type, uint8_t opaque_type) |
2d33f157 | 897 | { |
d62a17ae | 898 | struct listnode *node, *nnode; |
899 | struct registered_opaque_type *regtype; | |
2d33f157 | 900 | |
d62a17ae | 901 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node, nnode, regtype)) { |
902 | /* Check if we really registered this opaque type */ | |
903 | if (regtype->lsa_type == lsa_type | |
904 | && regtype->opaque_type == opaque_type) { | |
2d33f157 | 905 | |
d62a17ae | 906 | /* Yes, we registered this opaque type. Flush |
907 | all existing opaque LSAs of this type */ | |
2d33f157 | 908 | |
d62a17ae | 909 | ospf_apiserver_flush_opaque_lsa(apiserv, lsa_type, |
910 | opaque_type); | |
911 | ospf_delete_opaque_functab(lsa_type, opaque_type); | |
2d33f157 | 912 | |
d62a17ae | 913 | /* Remove from list of registered opaque types */ |
914 | listnode_delete(apiserv->opaque_types, regtype); | |
2d33f157 | 915 | |
d62a17ae | 916 | if (IS_DEBUG_OSPF_EVENT) |
917 | zlog_debug( | |
3efd0893 | 918 | "API: Del LSA-type(%d)/Opaque-type(%d) from apiserv(%p), total#(%d)", |
d62a17ae | 919 | lsa_type, opaque_type, (void *)apiserv, |
920 | listcount(apiserv->opaque_types)); | |
2d33f157 | 921 | |
d62a17ae | 922 | return 0; |
923 | } | |
2d33f157 | 924 | } |
2d33f157 | 925 | |
d62a17ae | 926 | /* Opaque type is not registered */ |
927 | zlog_warn("Failed to unregister opaque type [%d/%d]", lsa_type, | |
928 | opaque_type); | |
929 | return OSPF_API_OPAQUETYPENOTREGISTERED; | |
2d33f157 | 930 | } |
931 | ||
932 | ||
d62a17ae | 933 | static int apiserver_is_opaque_type_registered(struct ospf_apiserver *apiserv, |
d7c0a89a QY |
934 | uint8_t lsa_type, |
935 | uint8_t opaque_type) | |
2d33f157 | 936 | { |
d62a17ae | 937 | struct listnode *node, *nnode; |
938 | struct registered_opaque_type *regtype; | |
939 | ||
940 | /* XXX: how many types are there? if few, why not just a bitmap? */ | |
941 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node, nnode, regtype)) { | |
942 | /* Check if we really registered this opaque type */ | |
943 | if (regtype->lsa_type == lsa_type | |
944 | && regtype->opaque_type == opaque_type) { | |
945 | /* Yes registered */ | |
946 | return 1; | |
947 | } | |
948 | } | |
949 | /* Not registered */ | |
950 | return 0; | |
2d33f157 | 951 | } |
952 | ||
d62a17ae | 953 | int ospf_apiserver_handle_register_opaque_type(struct ospf_apiserver *apiserv, |
954 | struct msg *msg) | |
2d33f157 | 955 | { |
d62a17ae | 956 | struct msg_register_opaque_type *rmsg; |
d7c0a89a QY |
957 | uint8_t lsa_type; |
958 | uint8_t opaque_type; | |
d62a17ae | 959 | int rc = 0; |
960 | ||
961 | /* Extract parameters from register opaque type message */ | |
962 | rmsg = (struct msg_register_opaque_type *)STREAM_DATA(msg->s); | |
963 | ||
964 | lsa_type = rmsg->lsatype; | |
965 | opaque_type = rmsg->opaquetype; | |
966 | ||
967 | rc = ospf_apiserver_register_opaque_type(apiserv, lsa_type, | |
968 | opaque_type); | |
969 | ||
970 | /* Send a reply back to client including return code */ | |
971 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
972 | if (rc < 0) | |
973 | goto out; | |
974 | ||
975 | /* Now inform application about opaque types that are ready */ | |
976 | switch (lsa_type) { | |
977 | case OSPF_OPAQUE_LINK_LSA: | |
978 | ospf_apiserver_notify_ready_type9(apiserv); | |
979 | break; | |
980 | case OSPF_OPAQUE_AREA_LSA: | |
981 | ospf_apiserver_notify_ready_type10(apiserv); | |
982 | break; | |
983 | case OSPF_OPAQUE_AS_LSA: | |
984 | ospf_apiserver_notify_ready_type11(apiserv); | |
985 | break; | |
986 | } | |
2d33f157 | 987 | out: |
d62a17ae | 988 | return rc; |
2d33f157 | 989 | } |
990 | ||
991 | ||
992 | /* Notify specific client about all opaque types 9 that are ready. */ | |
d62a17ae | 993 | void ospf_apiserver_notify_ready_type9(struct ospf_apiserver *apiserv) |
2d33f157 | 994 | { |
d62a17ae | 995 | struct listnode *node, *nnode; |
996 | struct listnode *node2, *nnode2; | |
997 | struct ospf *ospf; | |
998 | struct ospf_interface *oi; | |
999 | struct registered_opaque_type *r; | |
1000 | ||
b5a8894d | 1001 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1002 | |
1003 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) { | |
1004 | /* Check if this interface is indeed ready for type 9 */ | |
1005 | if (!ospf_apiserver_is_ready_type9(oi)) | |
1006 | continue; | |
1007 | ||
1008 | /* Check for registered opaque type 9 types */ | |
1009 | /* XXX: loop-de-loop - optimise me */ | |
1010 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
1011 | r)) { | |
1012 | struct msg *msg; | |
1013 | ||
1014 | if (r->lsa_type == OSPF_OPAQUE_LINK_LSA) { | |
1015 | ||
1016 | /* Yes, this opaque type is ready */ | |
1017 | msg = new_msg_ready_notify( | |
1018 | 0, OSPF_OPAQUE_LINK_LSA, r->opaque_type, | |
1019 | oi->address->u.prefix4); | |
1020 | if (!msg) { | |
1021 | zlog_warn( | |
1022 | "apiserver_notify_ready_type9: msg_new failed"); | |
2d33f157 | 1023 | #ifdef NOTYET |
d62a17ae | 1024 | /* Cannot allocate new message. What |
1025 | * should we do? */ | |
1026 | ospf_apiserver_free(apiserv); | |
2d33f157 | 1027 | #endif |
d62a17ae | 1028 | goto out; |
1029 | } | |
1030 | ospf_apiserver_send_msg(apiserv, msg); | |
1031 | msg_free(msg); | |
1032 | } | |
2d33f157 | 1033 | } |
2d33f157 | 1034 | } |
2d33f157 | 1035 | |
1036 | out: | |
d62a17ae | 1037 | return; |
2d33f157 | 1038 | } |
1039 | ||
1040 | ||
1041 | /* Notify specific client about all opaque types 10 that are ready. */ | |
d62a17ae | 1042 | void ospf_apiserver_notify_ready_type10(struct ospf_apiserver *apiserv) |
2d33f157 | 1043 | { |
d62a17ae | 1044 | struct listnode *node, *nnode; |
1045 | struct listnode *node2, *nnode2; | |
1046 | struct ospf *ospf; | |
1047 | struct ospf_area *area; | |
1048 | ||
b5a8894d | 1049 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1050 | |
1051 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) { | |
1052 | struct registered_opaque_type *r; | |
1053 | ||
1054 | if (!ospf_apiserver_is_ready_type10(area)) { | |
1055 | continue; | |
1056 | } | |
1057 | ||
1058 | /* Check for registered opaque type 10 types */ | |
1059 | /* XXX: loop in loop - optimise me */ | |
1060 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
1061 | r)) { | |
1062 | struct msg *msg; | |
1063 | ||
1064 | if (r->lsa_type == OSPF_OPAQUE_AREA_LSA) { | |
1065 | /* Yes, this opaque type is ready */ | |
1066 | msg = new_msg_ready_notify( | |
1067 | 0, OSPF_OPAQUE_AREA_LSA, r->opaque_type, | |
1068 | area->area_id); | |
1069 | if (!msg) { | |
1070 | zlog_warn( | |
1071 | "apiserver_notify_ready_type10: msg_new failed"); | |
2d33f157 | 1072 | #ifdef NOTYET |
d62a17ae | 1073 | /* Cannot allocate new message. What |
1074 | * should we do? */ | |
1075 | ospf_apiserver_free(apiserv); | |
2d33f157 | 1076 | #endif |
d62a17ae | 1077 | goto out; |
1078 | } | |
1079 | ospf_apiserver_send_msg(apiserv, msg); | |
1080 | msg_free(msg); | |
1081 | } | |
2d33f157 | 1082 | } |
2d33f157 | 1083 | } |
2d33f157 | 1084 | |
1085 | out: | |
d62a17ae | 1086 | return; |
2d33f157 | 1087 | } |
1088 | ||
1089 | /* Notify specific client about all opaque types 11 that are ready */ | |
d62a17ae | 1090 | void ospf_apiserver_notify_ready_type11(struct ospf_apiserver *apiserv) |
2d33f157 | 1091 | { |
d62a17ae | 1092 | struct listnode *node, *nnode; |
1093 | struct ospf *ospf; | |
1094 | struct registered_opaque_type *r; | |
1095 | ||
b5a8894d | 1096 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1097 | |
1098 | /* Can type 11 be originated? */ | |
1099 | if (!ospf_apiserver_is_ready_type11(ospf)) | |
1100 | goto out; | |
1101 | ||
1102 | /* Check for registered opaque type 11 types */ | |
1103 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node, nnode, r)) { | |
1104 | struct msg *msg; | |
1105 | struct in_addr noarea_id = {.s_addr = 0L}; | |
1106 | ||
1107 | if (r->lsa_type == OSPF_OPAQUE_AS_LSA) { | |
1108 | /* Yes, this opaque type is ready */ | |
1109 | msg = new_msg_ready_notify(0, OSPF_OPAQUE_AS_LSA, | |
1110 | r->opaque_type, noarea_id); | |
1111 | ||
1112 | if (!msg) { | |
1113 | zlog_warn( | |
1114 | "apiserver_notify_ready_type11: msg_new failed"); | |
2d33f157 | 1115 | #ifdef NOTYET |
d62a17ae | 1116 | /* Cannot allocate new message. What should we |
1117 | * do? */ | |
1118 | ospf_apiserver_free(apiserv); | |
2d33f157 | 1119 | #endif |
d62a17ae | 1120 | goto out; |
1121 | } | |
1122 | ospf_apiserver_send_msg(apiserv, msg); | |
1123 | msg_free(msg); | |
1124 | } | |
2d33f157 | 1125 | } |
2d33f157 | 1126 | |
1127 | out: | |
d62a17ae | 1128 | return; |
2d33f157 | 1129 | } |
1130 | ||
d62a17ae | 1131 | int ospf_apiserver_handle_unregister_opaque_type(struct ospf_apiserver *apiserv, |
1132 | struct msg *msg) | |
2d33f157 | 1133 | { |
d62a17ae | 1134 | struct msg_unregister_opaque_type *umsg; |
d7c0a89a QY |
1135 | uint8_t ltype; |
1136 | uint8_t otype; | |
d62a17ae | 1137 | int rc = 0; |
2d33f157 | 1138 | |
d62a17ae | 1139 | /* Extract parameters from unregister opaque type message */ |
1140 | umsg = (struct msg_unregister_opaque_type *)STREAM_DATA(msg->s); | |
2d33f157 | 1141 | |
d62a17ae | 1142 | ltype = umsg->lsatype; |
1143 | otype = umsg->opaquetype; | |
2d33f157 | 1144 | |
d62a17ae | 1145 | rc = ospf_apiserver_unregister_opaque_type(apiserv, ltype, otype); |
2d33f157 | 1146 | |
d62a17ae | 1147 | /* Send a reply back to client including return code */ |
1148 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
2d33f157 | 1149 | |
d62a17ae | 1150 | return rc; |
2d33f157 | 1151 | } |
1152 | ||
1153 | ||
1154 | /* ----------------------------------------------------------- | |
1155 | * Following are functions for event (filter) registration. | |
1156 | * ----------------------------------------------------------- | |
1157 | */ | |
d62a17ae | 1158 | int ospf_apiserver_handle_register_event(struct ospf_apiserver *apiserv, |
1159 | struct msg *msg) | |
2d33f157 | 1160 | { |
d62a17ae | 1161 | struct msg_register_event *rmsg; |
1162 | int rc; | |
d7c0a89a | 1163 | uint32_t seqnum; |
8db278b5 | 1164 | size_t size; |
d62a17ae | 1165 | |
1166 | rmsg = (struct msg_register_event *)STREAM_DATA(msg->s); | |
1167 | ||
1168 | /* Get request sequence number */ | |
1169 | seqnum = msg_get_seq(msg); | |
1170 | ||
1171 | /* Free existing filter in apiserv. */ | |
1172 | XFREE(MTYPE_OSPF_APISERVER_MSGFILTER, apiserv->filter); | |
1173 | /* Alloc new space for filter. */ | |
8db278b5 OD |
1174 | size = ntohs(msg->hdr.msglen); |
1175 | if (size < OSPF_MAX_LSA_SIZE) { | |
d62a17ae | 1176 | |
8db278b5 | 1177 | apiserv->filter = XMALLOC(MTYPE_OSPF_APISERVER_MSGFILTER, size); |
0ce1ca80 | 1178 | |
8db278b5 OD |
1179 | /* copy it over. */ |
1180 | memcpy(apiserv->filter, &rmsg->filter, size); | |
1181 | rc = OSPF_API_OK; | |
1182 | } else | |
1183 | rc = OSPF_API_NOMEMORY; | |
0ce1ca80 | 1184 | |
d62a17ae | 1185 | /* Send a reply back to client with return code */ |
1186 | rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1187 | return rc; | |
2d33f157 | 1188 | } |
1189 | ||
1190 | ||
1191 | /* ----------------------------------------------------------- | |
78dfa0c7 | 1192 | * Following are functions for LSDB synchronization. |
2d33f157 | 1193 | * ----------------------------------------------------------- |
1194 | */ | |
1195 | ||
d62a17ae | 1196 | static int apiserver_sync_callback(struct ospf_lsa *lsa, void *p_arg, |
1197 | int int_arg) | |
2d33f157 | 1198 | { |
d62a17ae | 1199 | struct ospf_apiserver *apiserv; |
1200 | int seqnum; | |
1201 | struct msg *msg; | |
1202 | struct param_t { | |
1203 | struct ospf_apiserver *apiserv; | |
1204 | struct lsa_filter_type *filter; | |
1205 | } * param; | |
1206 | int rc = -1; | |
1207 | ||
1208 | /* Sanity check */ | |
1209 | assert(lsa->data); | |
1210 | assert(p_arg); | |
1211 | ||
1212 | param = (struct param_t *)p_arg; | |
1213 | apiserv = param->apiserv; | |
d7c0a89a | 1214 | seqnum = (uint32_t)int_arg; |
d62a17ae | 1215 | |
1216 | /* Check origin in filter. */ | |
1217 | if ((param->filter->origin == ANY_ORIGIN) | |
1218 | || (param->filter->origin == (lsa->flags & OSPF_LSA_SELF))) { | |
1219 | ||
1220 | /* Default area for AS-External and Opaque11 LSAs */ | |
1221 | struct in_addr area_id = {.s_addr = 0L}; | |
1222 | ||
1223 | /* Default interface for non Opaque9 LSAs */ | |
1224 | struct in_addr ifaddr = {.s_addr = 0L}; | |
1225 | ||
1226 | if (lsa->area) { | |
1227 | area_id = lsa->area->area_id; | |
1228 | } | |
1229 | if (lsa->data->type == OSPF_OPAQUE_LINK_LSA) { | |
1230 | ifaddr = lsa->oi->address->u.prefix4; | |
1231 | } | |
1232 | ||
1233 | msg = new_msg_lsa_change_notify( | |
1234 | MSG_LSA_UPDATE_NOTIFY, seqnum, ifaddr, area_id, | |
1235 | lsa->flags & OSPF_LSA_SELF, lsa->data); | |
1236 | if (!msg) { | |
1237 | zlog_warn( | |
1238 | "apiserver_sync_callback: new_msg_update failed"); | |
2d33f157 | 1239 | #ifdef NOTYET |
9d303b37 DL |
1240 | /* Cannot allocate new message. What should we do? */ |
1241 | /* ospf_apiserver_free (apiserv);*/ /* Do nothing | |
1242 | here XXX | |
1243 | */ | |
2d33f157 | 1244 | #endif |
d62a17ae | 1245 | goto out; |
1246 | } | |
2d33f157 | 1247 | |
d62a17ae | 1248 | /* Send LSA */ |
1249 | ospf_apiserver_send_msg(apiserv, msg); | |
1250 | msg_free(msg); | |
1251 | } | |
1252 | rc = 0; | |
2d33f157 | 1253 | |
1254 | out: | |
d62a17ae | 1255 | return rc; |
2d33f157 | 1256 | } |
1257 | ||
d62a17ae | 1258 | int ospf_apiserver_handle_sync_lsdb(struct ospf_apiserver *apiserv, |
1259 | struct msg *msg) | |
2d33f157 | 1260 | { |
d62a17ae | 1261 | struct listnode *node, *nnode; |
d7c0a89a | 1262 | uint32_t seqnum; |
d62a17ae | 1263 | int rc = 0; |
1264 | struct msg_sync_lsdb *smsg; | |
1265 | struct ospf_apiserver_param_t { | |
1266 | struct ospf_apiserver *apiserv; | |
1267 | struct lsa_filter_type *filter; | |
1268 | } param; | |
d7c0a89a | 1269 | uint16_t mask; |
d62a17ae | 1270 | struct route_node *rn; |
1271 | struct ospf_lsa *lsa; | |
1272 | struct ospf *ospf; | |
1273 | struct ospf_area *area; | |
1274 | ||
b5a8894d | 1275 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1276 | |
1277 | /* Get request sequence number */ | |
1278 | seqnum = msg_get_seq(msg); | |
1279 | /* Set sync msg. */ | |
1280 | smsg = (struct msg_sync_lsdb *)STREAM_DATA(msg->s); | |
1281 | ||
1282 | /* Set parameter struct. */ | |
1283 | param.apiserv = apiserv; | |
1284 | param.filter = &smsg->filter; | |
1285 | ||
1286 | /* Remember mask. */ | |
1287 | mask = ntohs(smsg->filter.typemask); | |
1288 | ||
1289 | /* Iterate over all areas. */ | |
1290 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) { | |
1291 | int i; | |
d7c0a89a | 1292 | uint32_t *area_id = NULL; |
d62a17ae | 1293 | |
1294 | /* Compare area_id with area_ids in sync request. */ | |
1295 | if ((i = smsg->filter.num_areas) > 0) { | |
1296 | /* Let area_id point to the list of area IDs, | |
1297 | * which is at the end of smsg->filter. */ | |
d7c0a89a | 1298 | area_id = (uint32_t *)(&smsg->filter + 1); |
d62a17ae | 1299 | while (i) { |
1300 | if (*area_id == area->area_id.s_addr) { | |
1301 | break; | |
1302 | } | |
1303 | i--; | |
1304 | area_id++; | |
1305 | } | |
1306 | } else { | |
1307 | i = 1; | |
1308 | } | |
1309 | ||
1310 | /* If area was found, then i>0 here. */ | |
1311 | if (i) { | |
1312 | /* Check msg type. */ | |
1313 | if (mask & Power2[OSPF_ROUTER_LSA]) | |
996c9314 | 1314 | LSDB_LOOP (ROUTER_LSDB(area), rn, lsa) |
044506e7 DS |
1315 | apiserver_sync_callback( |
1316 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1317 | if (mask & Power2[OSPF_NETWORK_LSA]) |
996c9314 | 1318 | LSDB_LOOP (NETWORK_LSDB(area), rn, lsa) |
044506e7 DS |
1319 | apiserver_sync_callback( |
1320 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1321 | if (mask & Power2[OSPF_SUMMARY_LSA]) |
996c9314 | 1322 | LSDB_LOOP (SUMMARY_LSDB(area), rn, lsa) |
044506e7 DS |
1323 | apiserver_sync_callback( |
1324 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1325 | if (mask & Power2[OSPF_ASBR_SUMMARY_LSA]) |
996c9314 | 1326 | LSDB_LOOP (ASBR_SUMMARY_LSDB(area), rn, lsa) |
044506e7 DS |
1327 | apiserver_sync_callback( |
1328 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1329 | if (mask & Power2[OSPF_OPAQUE_LINK_LSA]) |
996c9314 | 1330 | LSDB_LOOP (OPAQUE_LINK_LSDB(area), rn, lsa) |
044506e7 DS |
1331 | apiserver_sync_callback( |
1332 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1333 | if (mask & Power2[OSPF_OPAQUE_AREA_LSA]) |
996c9314 | 1334 | LSDB_LOOP (OPAQUE_AREA_LSDB(area), rn, lsa) |
044506e7 DS |
1335 | apiserver_sync_callback( |
1336 | lsa, (void *)¶m, seqnum); | |
2d33f157 | 1337 | } |
d62a17ae | 1338 | } |
1339 | ||
1340 | /* For AS-external LSAs */ | |
1341 | if (ospf->lsdb) { | |
1342 | if (mask & Power2[OSPF_AS_EXTERNAL_LSA]) | |
996c9314 | 1343 | LSDB_LOOP (EXTERNAL_LSDB(ospf), rn, lsa) |
044506e7 DS |
1344 | apiserver_sync_callback(lsa, (void *)¶m, |
1345 | seqnum); | |
d62a17ae | 1346 | } |
1347 | ||
1348 | /* For AS-external opaque LSAs */ | |
1349 | if (ospf->lsdb) { | |
1350 | if (mask & Power2[OSPF_OPAQUE_AS_LSA]) | |
996c9314 | 1351 | LSDB_LOOP (OPAQUE_AS_LSDB(ospf), rn, lsa) |
044506e7 DS |
1352 | apiserver_sync_callback(lsa, (void *)¶m, |
1353 | seqnum); | |
d62a17ae | 1354 | } |
1355 | ||
1356 | /* Send a reply back to client with return code */ | |
1357 | rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1358 | return rc; | |
2d33f157 | 1359 | } |
1360 | ||
97355a6d CH |
1361 | /* |
1362 | * ----------------------------------------------------------- | |
1363 | * Followings are functions for synchronization. | |
149491af CH |
1364 | * ----------------------------------------------------------- |
1365 | */ | |
1366 | ||
1367 | int ospf_apiserver_handle_sync_reachable(struct ospf_apiserver *apiserv, | |
1368 | struct msg *msg) | |
1369 | { | |
1370 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1371 | struct route_table *rt = ospf->all_rtrs; | |
1372 | uint32_t seqnum = msg_get_seq(msg); | |
1373 | struct in_addr *a, *abuf; | |
1374 | struct msg_reachable_change *areach; | |
1375 | struct msg *amsg; | |
1376 | uint mcount, count; | |
1377 | int _rc, rc = 0; | |
1378 | ||
1379 | if (!rt) | |
1380 | goto out; | |
1381 | ||
1382 | /* send all adds based on current reachable routers */ | |
1383 | a = abuf = XCALLOC(MTYPE_OSPF_APISERVER, | |
1384 | sizeof(struct in_addr) * rt->count); | |
1385 | for (struct route_node *rn = route_top(rt); rn; rn = route_next(rn)) | |
1386 | if (listhead((struct list *)rn->info)) | |
1387 | *a++ = rn->p.u.prefix4; | |
1388 | ||
1389 | assert((a - abuf) <= (long)rt->count); | |
1390 | count = (a - abuf); | |
1391 | ||
1392 | a = abuf; | |
1393 | while (count && !rc) { | |
1394 | amsg = new_msg_reachable_change(seqnum, count, a, 0, NULL); | |
1395 | areach = (struct msg_reachable_change *)STREAM_DATA(amsg->s); | |
1396 | mcount = ntohs(areach->nadd) + ntohs(areach->nremove); | |
1397 | assert(mcount <= count); | |
1398 | a = a + mcount; | |
1399 | count -= mcount; | |
1400 | rc = ospf_apiserver_send_msg(apiserv, amsg); | |
1401 | msg_free(amsg); | |
1402 | } | |
1403 | XFREE(MTYPE_OSPF_APISERVER, abuf); | |
1404 | ||
1405 | out: | |
149491af CH |
1406 | /* Send a reply back to client with return code */ |
1407 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
149491af CH |
1408 | rc = rc ? rc : _rc; |
1409 | apiserv->reachable_sync = !rc; | |
1410 | return rc; | |
1411 | } | |
1412 | ||
97355a6d CH |
1413 | int ospf_apiserver_handle_sync_ism(struct ospf_apiserver *apiserv, |
1414 | struct msg *msg) | |
1415 | { | |
1416 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1417 | struct listnode *anode, *inode; | |
1418 | struct ospf_area *area; | |
1419 | struct ospf_interface *oi; | |
1420 | struct msg *m; | |
1421 | uint32_t seqnum = msg_get_seq(msg); | |
1422 | int _rc, rc = 0; | |
1423 | ||
1424 | /* walk all areas */ | |
1425 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, anode, area)) { | |
1426 | /* walk all interfaces */ | |
1427 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, inode, oi)) { | |
1428 | m = new_msg_ism_change(seqnum, oi->address->u.prefix4, | |
1429 | area->area_id, oi->state); | |
1430 | rc = ospf_apiserver_send_msg(apiserv, m); | |
1431 | msg_free(m); | |
1432 | if (rc) | |
1433 | break; | |
1434 | } | |
1435 | if (rc) | |
1436 | break; | |
1437 | } | |
1438 | /* Send a reply back to client with return code */ | |
1439 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1440 | return rc ? rc : _rc; | |
1441 | } | |
1442 | ||
1443 | ||
1444 | int ospf_apiserver_handle_sync_nsm(struct ospf_apiserver *apiserv, | |
1445 | struct msg *msg) | |
1446 | { | |
1447 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1448 | struct listnode *anode, *inode; | |
1449 | struct ospf_area *area; | |
1450 | struct ospf_interface *oi; | |
1451 | struct ospf_neighbor *nbr; | |
1452 | struct route_node *rn; | |
1453 | struct msg *m; | |
1454 | uint32_t seqnum = msg_get_seq(msg); | |
1455 | int _rc, rc = 0; | |
1456 | ||
1457 | /* walk all areas */ | |
1458 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, anode, area)) { | |
1459 | /* walk all interfaces */ | |
1460 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, inode, oi)) { | |
1461 | /* walk all neighbors */ | |
1462 | for (rn = route_top(oi->nbrs); rn; | |
1463 | rn = route_next(rn)) { | |
1464 | nbr = rn->info; | |
1465 | if (!nbr) | |
1466 | continue; | |
1467 | m = new_msg_nsm_change( | |
1468 | seqnum, oi->address->u.prefix4, | |
1469 | nbr->src, nbr->router_id, nbr->state); | |
1470 | rc = ospf_apiserver_send_msg(apiserv, m); | |
1471 | msg_free(m); | |
1472 | if (rc) | |
1473 | break; | |
1474 | } | |
1475 | if (rc) | |
1476 | break; | |
1477 | } | |
1478 | if (rc) | |
1479 | break; | |
1480 | } | |
1481 | /* Send a reply back to client with return code */ | |
1482 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1483 | return rc ? rc : _rc; | |
1484 | } | |
1485 | ||
2d33f157 | 1486 | |
44038c7a CH |
1487 | int ospf_apiserver_handle_sync_router_id(struct ospf_apiserver *apiserv, |
1488 | struct msg *msg) | |
1489 | { | |
1490 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1491 | uint32_t seqnum = msg_get_seq(msg); | |
1492 | struct msg *m; | |
1493 | int _rc, rc = 0; | |
1494 | ||
1495 | m = new_msg_router_id_change(seqnum, ospf->router_id); | |
1496 | rc = ospf_apiserver_send_msg(apiserv, m); | |
1497 | msg_free(m); | |
1498 | ||
1499 | /* Send a reply back to client with return code */ | |
1500 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1501 | return rc ? rc : _rc; | |
1502 | } | |
1503 | ||
2d33f157 | 1504 | /* ----------------------------------------------------------- |
78dfa0c7 | 1505 | * Following are functions to originate or update LSA |
2d33f157 | 1506 | * from an application. |
1507 | * ----------------------------------------------------------- | |
1508 | */ | |
1509 | ||
1510 | /* Create a new internal opaque LSA by taking prototype and filling in | |
1511 | missing fields such as age, sequence number, advertising router, | |
1512 | checksum and so on. The interface parameter is used for type 9 | |
1513 | LSAs, area parameter for type 10. Type 11 LSAs do neither need area | |
1514 | nor interface. */ | |
1515 | ||
d62a17ae | 1516 | struct ospf_lsa *ospf_apiserver_opaque_lsa_new(struct ospf_area *area, |
1517 | struct ospf_interface *oi, | |
1518 | struct lsa_header *protolsa) | |
2d33f157 | 1519 | { |
d62a17ae | 1520 | struct stream *s; |
1521 | struct lsa_header *newlsa; | |
1522 | struct ospf_lsa *new = NULL; | |
d7c0a89a QY |
1523 | uint8_t options = 0x0; |
1524 | uint16_t length; | |
d62a17ae | 1525 | |
1526 | struct ospf *ospf; | |
1527 | ||
c0f3f7cd | 1528 | if (oi && oi->ospf) |
0d31e63e CS |
1529 | ospf = oi->ospf; |
1530 | else | |
1531 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1532 | ||
d62a17ae | 1533 | assert(ospf); |
1534 | ||
1535 | /* Create a stream for internal opaque LSA */ | |
1536 | if ((s = stream_new(OSPF_MAX_LSA_SIZE)) == NULL) { | |
1537 | zlog_warn("ospf_apiserver_opaque_lsa_new: stream_new failed"); | |
1538 | return NULL; | |
1539 | } | |
1540 | ||
1541 | newlsa = (struct lsa_header *)STREAM_DATA(s); | |
1542 | ||
1543 | /* XXX If this is a link-local LSA or an AS-external LSA, how do we | |
1544 | have to set options? */ | |
1545 | ||
1546 | if (area) { | |
1547 | options = LSA_OPTIONS_GET(area); | |
1548 | options |= LSA_OPTIONS_NSSA_GET(area); | |
1549 | } | |
1550 | ||
1551 | options |= OSPF_OPTION_O; /* Don't forget to set option bit */ | |
1552 | ||
1553 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) { | |
96b663a3 MS |
1554 | zlog_debug("LSA[Type%d:%pI4]: Creating an Opaque-LSA instance", |
1555 | protolsa->type, &protolsa->id); | |
d62a17ae | 1556 | } |
1557 | ||
1558 | /* Set opaque-LSA header fields. */ | |
1559 | lsa_header_set(s, options, protolsa->type, protolsa->id, | |
1560 | ospf->router_id); | |
1561 | ||
1562 | /* Set opaque-LSA body fields. */ | |
d7c0a89a | 1563 | stream_put(s, ((uint8_t *)protolsa) + sizeof(struct lsa_header), |
d62a17ae | 1564 | ntohs(protolsa->length) - sizeof(struct lsa_header)); |
1565 | ||
1566 | /* Determine length of LSA. */ | |
1567 | length = stream_get_endp(s); | |
1568 | newlsa->length = htons(length); | |
1569 | ||
1570 | /* Create OSPF LSA. */ | |
5b3d4186 | 1571 | new = ospf_lsa_new_and_data(length); |
d62a17ae | 1572 | |
1573 | new->area = area; | |
1574 | new->oi = oi; | |
0d31e63e | 1575 | new->vrf_id = ospf->vrf_id; |
d62a17ae | 1576 | |
1577 | SET_FLAG(new->flags, OSPF_LSA_SELF); | |
1578 | memcpy(new->data, newlsa, length); | |
1579 | stream_free(s); | |
1580 | ||
1581 | return new; | |
2d33f157 | 1582 | } |
1583 | ||
1584 | ||
d62a17ae | 1585 | int ospf_apiserver_is_ready_type9(struct ospf_interface *oi) |
2d33f157 | 1586 | { |
bd1188f9 CH |
1587 | /* We can always handle getting opaque's even if we can't flood them */ |
1588 | return 1; | |
2d33f157 | 1589 | } |
1590 | ||
d62a17ae | 1591 | int ospf_apiserver_is_ready_type10(struct ospf_area *area) |
2d33f157 | 1592 | { |
bd1188f9 CH |
1593 | /* We can always handle getting opaque's even if we can't flood them */ |
1594 | return 1; | |
2d33f157 | 1595 | } |
1596 | ||
d62a17ae | 1597 | int ospf_apiserver_is_ready_type11(struct ospf *ospf) |
2d33f157 | 1598 | { |
bd1188f9 CH |
1599 | /* We can always handle getting opaque's even if we can't flood them */ |
1600 | return 1; | |
2d33f157 | 1601 | } |
1602 | ||
1603 | ||
d62a17ae | 1604 | int ospf_apiserver_handle_originate_request(struct ospf_apiserver *apiserv, |
1605 | struct msg *msg) | |
2d33f157 | 1606 | { |
d62a17ae | 1607 | struct msg_originate_request *omsg; |
1608 | struct lsa_header *data; | |
1609 | struct ospf_lsa *new; | |
1610 | struct ospf_lsa *old; | |
1611 | struct ospf_area *area = NULL; | |
1612 | struct ospf_interface *oi = NULL; | |
1613 | struct ospf_lsdb *lsdb = NULL; | |
1614 | struct ospf *ospf; | |
1615 | int lsa_type, opaque_type; | |
1616 | int ready = 0; | |
1617 | int rc = 0; | |
1618 | ||
b5a8894d | 1619 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1620 | |
1621 | /* Extract opaque LSA data from message */ | |
1622 | omsg = (struct msg_originate_request *)STREAM_DATA(msg->s); | |
1623 | data = &omsg->data; | |
1624 | ||
1625 | /* Determine interface for type9 or area for type10 LSAs. */ | |
1626 | switch (data->type) { | |
1627 | case OSPF_OPAQUE_LINK_LSA: | |
1628 | oi = ospf_apiserver_if_lookup_by_addr(omsg->ifaddr); | |
1629 | if (!oi) { | |
96b663a3 MS |
1630 | zlog_warn("apiserver_originate: unknown interface %pI4", |
1631 | &omsg->ifaddr); | |
d62a17ae | 1632 | rc = OSPF_API_NOSUCHINTERFACE; |
1633 | goto out; | |
1634 | } | |
1635 | area = oi->area; | |
1636 | lsdb = area->lsdb; | |
1637 | break; | |
1638 | case OSPF_OPAQUE_AREA_LSA: | |
1639 | area = ospf_area_lookup_by_area_id(ospf, omsg->area_id); | |
1640 | if (!area) { | |
96b663a3 MS |
1641 | zlog_warn("apiserver_originate: unknown area %pI4", |
1642 | &omsg->area_id); | |
d62a17ae | 1643 | rc = OSPF_API_NOSUCHAREA; |
1644 | goto out; | |
1645 | } | |
1646 | lsdb = area->lsdb; | |
1647 | break; | |
1648 | case OSPF_OPAQUE_AS_LSA: | |
1649 | lsdb = ospf->lsdb; | |
1650 | break; | |
1651 | default: | |
1652 | /* We can only handle opaque types here */ | |
1653 | zlog_warn( | |
1654 | "apiserver_originate: Cannot originate non-opaque LSA type %d", | |
1655 | data->type); | |
1656 | rc = OSPF_API_ILLEGALLSATYPE; | |
1657 | goto out; | |
1658 | } | |
1659 | ||
1660 | /* Check if we registered this opaque type */ | |
1661 | lsa_type = data->type; | |
1662 | opaque_type = GET_OPAQUE_TYPE(ntohl(data->id.s_addr)); | |
1663 | ||
1664 | if (!apiserver_is_opaque_type_registered(apiserv, lsa_type, | |
1665 | opaque_type)) { | |
1666 | zlog_warn( | |
1667 | "apiserver_originate: LSA-type(%d)/Opaque-type(%d): Not registered", | |
1668 | lsa_type, opaque_type); | |
1669 | rc = OSPF_API_OPAQUETYPENOTREGISTERED; | |
1670 | goto out; | |
1671 | } | |
1672 | ||
1673 | /* Make sure that the neighbors are ready before we can originate */ | |
1674 | switch (data->type) { | |
1675 | case OSPF_OPAQUE_LINK_LSA: | |
1676 | ready = ospf_apiserver_is_ready_type9(oi); | |
1677 | break; | |
1678 | case OSPF_OPAQUE_AREA_LSA: | |
1679 | ready = ospf_apiserver_is_ready_type10(area); | |
1680 | break; | |
1681 | case OSPF_OPAQUE_AS_LSA: | |
1682 | ready = ospf_apiserver_is_ready_type11(ospf); | |
1683 | break; | |
1684 | default: | |
1685 | break; | |
1686 | } | |
1687 | ||
1688 | if (!ready) { | |
1689 | zlog_warn("Neighbors not ready to originate type %d", | |
1690 | data->type); | |
1691 | rc = OSPF_API_NOTREADY; | |
1692 | goto out; | |
1693 | } | |
1694 | ||
1695 | /* Create OSPF's internal opaque LSA representation */ | |
1696 | new = ospf_apiserver_opaque_lsa_new(area, oi, data); | |
1697 | if (!new) { | |
1698 | rc = OSPF_API_NOMEMORY; /* XXX */ | |
1699 | goto out; | |
1700 | } | |
1701 | ||
1702 | /* Determine if LSA is new or an update for an existing one. */ | |
1703 | old = ospf_lsdb_lookup(lsdb, new); | |
1704 | ||
5349121b | 1705 | if (!old || !ospf_opaque_is_owned(old)) { |
d62a17ae | 1706 | /* New LSA install in LSDB. */ |
5349121b | 1707 | rc = ospf_apiserver_originate1(new, old); |
d62a17ae | 1708 | } else { |
1709 | /* | |
1710 | * Keep the new LSA instance in the "waiting place" until the | |
1711 | * next | |
1712 | * refresh timing. If several LSA update requests for the same | |
1713 | * LSID | |
1714 | * have issued by peer, the last one takes effect. | |
1715 | */ | |
1716 | new->lsdb = &apiserv->reserve; | |
1717 | ospf_lsdb_add(&apiserv->reserve, new); | |
1718 | ||
1719 | /* Kick the scheduler function. */ | |
1720 | ospf_opaque_lsa_refresh_schedule(old); | |
1721 | } | |
2d33f157 | 1722 | |
1723 | out: | |
1724 | ||
d62a17ae | 1725 | /* Send a reply back to client with return code */ |
1726 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
1727 | return rc; | |
2d33f157 | 1728 | } |
1729 | ||
1730 | ||
1731 | /* ----------------------------------------------------------- | |
d62a17ae | 1732 | * Flood an LSA within its flooding scope. |
2d33f157 | 1733 | * ----------------------------------------------------------- |
1734 | */ | |
1735 | ||
1736 | /* XXX We can probably use ospf_flood_through instead of this function | |
d62a17ae | 1737 | but then we need the neighbor parameter. If we set nbr to |
2d33f157 | 1738 | NULL then ospf_flood_through crashes due to dereferencing NULL. */ |
1739 | ||
d62a17ae | 1740 | void ospf_apiserver_flood_opaque_lsa(struct ospf_lsa *lsa) |
2d33f157 | 1741 | { |
d62a17ae | 1742 | assert(lsa); |
1743 | ||
1744 | switch (lsa->data->type) { | |
1745 | case OSPF_OPAQUE_LINK_LSA: | |
1746 | /* Increment counters? XXX */ | |
1747 | ||
1748 | /* Flood LSA through local network. */ | |
1749 | ospf_flood_through_area(lsa->area, NULL /*nbr */, lsa); | |
1750 | break; | |
1751 | case OSPF_OPAQUE_AREA_LSA: | |
1752 | /* Update LSA origination count. */ | |
1753 | assert(lsa->area); | |
1754 | lsa->area->ospf->lsa_originate_count++; | |
1755 | ||
1756 | /* Flood LSA through area. */ | |
1757 | ospf_flood_through_area(lsa->area, NULL /*nbr */, lsa); | |
1758 | break; | |
1759 | case OSPF_OPAQUE_AS_LSA: { | |
1760 | struct ospf *ospf; | |
1761 | ||
b5a8894d | 1762 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1763 | assert(ospf); |
1764 | ||
1765 | /* Increment counters? XXX */ | |
1766 | ||
1767 | /* Flood LSA through AS. */ | |
1768 | ospf_flood_through_as(ospf, NULL /*nbr */, lsa); | |
1769 | break; | |
1770 | } | |
1771 | } | |
2d33f157 | 1772 | } |
1773 | ||
5349121b | 1774 | int ospf_apiserver_originate1(struct ospf_lsa *lsa, struct ospf_lsa *old) |
2d33f157 | 1775 | { |
d62a17ae | 1776 | struct ospf *ospf; |
99b7c5d6 | 1777 | |
b5a8894d | 1778 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1779 | assert(ospf); |
99b7c5d6 | 1780 | |
5349121b CH |
1781 | if (old) { |
1782 | /* | |
1783 | * An old LSA exists that we didn't originate it in this | |
1784 | * session. Dump it, but increment past it's seqnum. | |
1785 | */ | |
1786 | assert(!ospf_opaque_is_owned(old)); | |
1787 | if (IS_LSA_MAX_SEQ(old)) { | |
1788 | flog_warn( | |
1789 | EC_OSPF_LSA_INSTALL_FAILURE, | |
1790 | "ospf_apiserver_originate1: old LSA at maxseq"); | |
1791 | return -1; | |
1792 | } | |
1793 | lsa->data->ls_seqnum = lsa_seqnum_increment(old); | |
1794 | ospf_discard_from_db(ospf, old->lsdb, old); | |
1795 | } | |
1796 | ||
d62a17ae | 1797 | /* Install this LSA into LSDB. */ |
1798 | if (ospf_lsa_install(ospf, lsa->oi, lsa) == NULL) { | |
cf444bcf | 1799 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
5349121b | 1800 | "%s: ospf_lsa_install failed", __func__); |
d62a17ae | 1801 | return -1; |
1802 | } | |
2d33f157 | 1803 | |
d62a17ae | 1804 | /* Flood LSA within scope */ |
2d33f157 | 1805 | |
1806 | #ifdef NOTYET | |
d62a17ae | 1807 | /* |
1808 | * NB: Modified version of "ospf_flood_though ()" accepts NULL "inbr" | |
1809 | * parameter, and thus it does not cause SIGSEGV error. | |
1810 | */ | |
1811 | ospf_flood_through(NULL /*nbr */, lsa); | |
1812 | #else /* NOTYET */ | |
1813 | ||
1814 | ospf_apiserver_flood_opaque_lsa(lsa); | |
2d33f157 | 1815 | #endif /* NOTYET */ |
1816 | ||
d62a17ae | 1817 | return 0; |
2d33f157 | 1818 | } |
1819 | ||
1820 | ||
1821 | /* Opaque LSAs of type 9 on a specific interface can now be | |
1822 | originated. Tell clients that registered type 9. */ | |
d62a17ae | 1823 | int ospf_apiserver_lsa9_originator(void *arg) |
2d33f157 | 1824 | { |
d62a17ae | 1825 | struct ospf_interface *oi; |
2d33f157 | 1826 | |
d62a17ae | 1827 | oi = (struct ospf_interface *)arg; |
1828 | if (listcount(apiserver_list) > 0) { | |
1829 | ospf_apiserver_clients_notify_ready_type9(oi); | |
1830 | } | |
1831 | return 0; | |
2d33f157 | 1832 | } |
1833 | ||
d62a17ae | 1834 | int ospf_apiserver_lsa10_originator(void *arg) |
2d33f157 | 1835 | { |
d62a17ae | 1836 | struct ospf_area *area; |
2d33f157 | 1837 | |
d62a17ae | 1838 | area = (struct ospf_area *)arg; |
1839 | if (listcount(apiserver_list) > 0) { | |
1840 | ospf_apiserver_clients_notify_ready_type10(area); | |
1841 | } | |
1842 | return 0; | |
2d33f157 | 1843 | } |
1844 | ||
d62a17ae | 1845 | int ospf_apiserver_lsa11_originator(void *arg) |
2d33f157 | 1846 | { |
d62a17ae | 1847 | struct ospf *ospf; |
2d33f157 | 1848 | |
d62a17ae | 1849 | ospf = (struct ospf *)arg; |
1850 | if (listcount(apiserver_list) > 0) { | |
1851 | ospf_apiserver_clients_notify_ready_type11(ospf); | |
1852 | } | |
1853 | return 0; | |
2d33f157 | 1854 | } |
1855 | ||
1856 | ||
1857 | /* Periodically refresh opaque LSAs so that they do not expire in | |
1858 | other routers. */ | |
d62a17ae | 1859 | struct ospf_lsa *ospf_apiserver_lsa_refresher(struct ospf_lsa *lsa) |
2d33f157 | 1860 | { |
d62a17ae | 1861 | struct ospf_apiserver *apiserv; |
1862 | struct ospf_lsa *new = NULL; | |
1863 | struct ospf *ospf; | |
1864 | ||
ed35fc05 | 1865 | assert(lsa); |
1866 | ||
b5a8894d | 1867 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1868 | assert(ospf); |
1869 | ||
1870 | apiserv = lookup_apiserver_by_lsa(lsa); | |
1871 | if (!apiserv) { | |
1872 | zlog_warn( | |
1873 | "ospf_apiserver_lsa_refresher: LSA[%s]: No apiserver?", | |
1874 | dump_lsa_key(lsa)); | |
1875 | lsa->data->ls_age = | |
1876 | htons(OSPF_LSA_MAXAGE); /* Flush it anyway. */ | |
4adf00f7 | 1877 | goto out; |
d62a17ae | 1878 | } |
1879 | ||
1880 | if (IS_LSA_MAXAGE(lsa)) { | |
1881 | ospf_opaque_lsa_flush_schedule(lsa); | |
1882 | goto out; | |
1883 | } | |
1884 | ||
1885 | /* Check if updated version of LSA instance has already prepared. */ | |
1886 | new = ospf_lsdb_lookup(&apiserv->reserve, lsa); | |
1887 | if (!new) { | |
1888 | /* This is a periodic refresh, driven by core OSPF mechanism. */ | |
1889 | new = ospf_apiserver_opaque_lsa_new(lsa->area, lsa->oi, | |
1890 | lsa->data); | |
1891 | if (!new) { | |
1892 | zlog_warn( | |
1893 | "ospf_apiserver_lsa_refresher: Cannot create a new LSA?"); | |
1894 | goto out; | |
1895 | } | |
1896 | } else { | |
1897 | /* This is a forcible refresh, requested by OSPF-API client. */ | |
1898 | ospf_lsdb_delete(&apiserv->reserve, new); | |
1899 | new->lsdb = NULL; | |
1900 | } | |
1901 | ||
1902 | /* Increment sequence number */ | |
1903 | new->data->ls_seqnum = lsa_seqnum_increment(lsa); | |
1904 | ||
1905 | /* New LSA is in same area. */ | |
1906 | new->area = lsa->area; | |
1907 | SET_FLAG(new->flags, OSPF_LSA_SELF); | |
1908 | ||
1909 | /* Install LSA into LSDB. */ | |
1910 | if (ospf_lsa_install(ospf, new->oi, new) == NULL) { | |
542a208f | 1911 | flog_warn( |
cf444bcf | 1912 | EC_OSPF_LSA_INSTALL_FAILURE, |
d62a17ae | 1913 | "ospf_apiserver_lsa_refresher: ospf_lsa_install failed"); |
1914 | ospf_lsa_unlock(&new); | |
1915 | goto out; | |
1916 | } | |
1917 | ||
1918 | /* Flood updated LSA through interface, area or AS */ | |
2d33f157 | 1919 | |
1920 | #ifdef NOTYET | |
d62a17ae | 1921 | ospf_flood_through(NULL /*nbr */, new); |
2d33f157 | 1922 | #endif /* NOTYET */ |
d62a17ae | 1923 | ospf_apiserver_flood_opaque_lsa(new); |
2d33f157 | 1924 | |
d62a17ae | 1925 | /* Debug logging. */ |
1926 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) { | |
96b663a3 MS |
1927 | zlog_debug("LSA[Type%d:%pI4]: Refresh Opaque LSA", |
1928 | new->data->type, &new->data->id); | |
d62a17ae | 1929 | ospf_lsa_header_dump(new->data); |
1930 | } | |
2d33f157 | 1931 | |
1932 | out: | |
d62a17ae | 1933 | return new; |
2d33f157 | 1934 | } |
1935 | ||
1936 | ||
1937 | /* ----------------------------------------------------------- | |
78dfa0c7 | 1938 | * Following are functions to delete LSAs |
2d33f157 | 1939 | * ----------------------------------------------------------- |
1940 | */ | |
1941 | ||
d62a17ae | 1942 | int ospf_apiserver_handle_delete_request(struct ospf_apiserver *apiserv, |
1943 | struct msg *msg) | |
2d33f157 | 1944 | { |
d62a17ae | 1945 | struct msg_delete_request *dmsg; |
1946 | struct ospf_lsa *old; | |
1947 | struct ospf_area *area = NULL; | |
1948 | struct in_addr id; | |
1949 | int lsa_type, opaque_type; | |
1950 | int rc = 0; | |
1951 | struct ospf *ospf; | |
1952 | ||
b5a8894d | 1953 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1954 | assert(ospf); |
1955 | ||
1956 | /* Extract opaque LSA from message */ | |
1957 | dmsg = (struct msg_delete_request *)STREAM_DATA(msg->s); | |
1958 | ||
1959 | /* Lookup area for link-local and area-local opaque LSAs */ | |
1960 | switch (dmsg->lsa_type) { | |
1961 | case OSPF_OPAQUE_LINK_LSA: | |
1962 | case OSPF_OPAQUE_AREA_LSA: | |
1963 | area = ospf_area_lookup_by_area_id(ospf, dmsg->area_id); | |
1964 | if (!area) { | |
96b663a3 MS |
1965 | zlog_warn("ospf_apiserver_lsa_delete: unknown area %pI4", |
1966 | &dmsg->area_id); | |
d62a17ae | 1967 | rc = OSPF_API_NOSUCHAREA; |
1968 | goto out; | |
1969 | } | |
1970 | break; | |
1971 | case OSPF_OPAQUE_AS_LSA: | |
1972 | /* AS-external opaque LSAs have no designated area */ | |
1973 | area = NULL; | |
1974 | break; | |
1975 | default: | |
1976 | zlog_warn( | |
1977 | "ospf_apiserver_lsa_delete: Cannot delete non-opaque LSA type %d", | |
1978 | dmsg->lsa_type); | |
1979 | rc = OSPF_API_ILLEGALLSATYPE; | |
1980 | goto out; | |
1981 | } | |
1982 | ||
1983 | /* Check if we registered this opaque type */ | |
1984 | lsa_type = dmsg->lsa_type; | |
1985 | opaque_type = dmsg->opaque_type; | |
1986 | ||
1987 | if (!apiserver_is_opaque_type_registered(apiserv, lsa_type, | |
1988 | opaque_type)) { | |
1989 | zlog_warn( | |
1990 | "ospf_apiserver_lsa_delete: LSA-type(%d)/Opaque-type(%d): Not registered", | |
1991 | lsa_type, opaque_type); | |
1992 | rc = OSPF_API_OPAQUETYPENOTREGISTERED; | |
1993 | goto out; | |
1994 | } | |
1995 | ||
1996 | /* opaque_id is in network byte order */ | |
1997 | id.s_addr = htonl( | |
1998 | SET_OPAQUE_LSID(dmsg->opaque_type, ntohl(dmsg->opaque_id))); | |
1999 | ||
2000 | /* | |
2001 | * Even if the target LSA has once scheduled to flush, it remains in | |
2002 | * the LSDB until it is finally handled by the maxage remover thread. | |
2003 | * Therefore, the lookup function below may return non-NULL result. | |
2004 | */ | |
b5a8894d | 2005 | old = ospf_lsa_lookup(ospf, area, dmsg->lsa_type, id, ospf->router_id); |
d62a17ae | 2006 | if (!old) { |
2007 | zlog_warn( | |
96b663a3 MS |
2008 | "ospf_apiserver_lsa_delete: LSA[Type%d:%pI4] not in LSDB", |
2009 | dmsg->lsa_type, &id); | |
d62a17ae | 2010 | rc = OSPF_API_NOSUCHLSA; |
2011 | goto out; | |
2012 | } | |
2013 | ||
2014 | /* Schedule flushing of LSA from LSDB */ | |
2015 | /* NB: Multiple scheduling will produce a warning message, but harmless. | |
2016 | */ | |
2017 | ospf_opaque_lsa_flush_schedule(old); | |
2d33f157 | 2018 | |
2019 | out: | |
2020 | ||
d62a17ae | 2021 | /* Send reply back to client including return code */ |
2022 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
2023 | return rc; | |
2d33f157 | 2024 | } |
2025 | ||
2026 | /* Flush self-originated opaque LSA */ | |
d62a17ae | 2027 | static int apiserver_flush_opaque_type_callback(struct ospf_lsa *lsa, |
2028 | void *p_arg, int int_arg) | |
2d33f157 | 2029 | { |
d62a17ae | 2030 | struct param_t { |
2031 | struct ospf_apiserver *apiserv; | |
d7c0a89a QY |
2032 | uint8_t lsa_type; |
2033 | uint8_t opaque_type; | |
d62a17ae | 2034 | } * param; |
2035 | ||
2036 | /* Sanity check */ | |
2037 | assert(lsa->data); | |
2038 | assert(p_arg); | |
2039 | param = (struct param_t *)p_arg; | |
2040 | ||
2041 | /* If LSA matches type and opaque type then delete it */ | |
2042 | if (IS_LSA_SELF(lsa) && lsa->data->type == param->lsa_type | |
2043 | && GET_OPAQUE_TYPE(ntohl(lsa->data->id.s_addr)) | |
2044 | == param->opaque_type) { | |
2045 | ospf_opaque_lsa_flush_schedule(lsa); | |
2046 | } | |
2047 | return 0; | |
2d33f157 | 2048 | } |
2049 | ||
2050 | /* Delete self-originated opaque LSAs of a given opaque type. This | |
2051 | function is called when an application unregisters a given opaque | |
2052 | type or a connection to an application closes and all those opaque | |
2053 | LSAs need to be flushed the LSDB. */ | |
d62a17ae | 2054 | void ospf_apiserver_flush_opaque_lsa(struct ospf_apiserver *apiserv, |
d7c0a89a | 2055 | uint8_t lsa_type, uint8_t opaque_type) |
2d33f157 | 2056 | { |
d62a17ae | 2057 | struct param_t { |
2058 | struct ospf_apiserver *apiserv; | |
d7c0a89a QY |
2059 | uint8_t lsa_type; |
2060 | uint8_t opaque_type; | |
d62a17ae | 2061 | } param; |
2062 | struct listnode *node, *nnode; | |
2063 | struct ospf *ospf; | |
2064 | struct ospf_area *area; | |
2065 | ||
b5a8894d | 2066 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 2067 | assert(ospf); |
2068 | ||
2069 | /* Set parameter struct. */ | |
2070 | param.apiserv = apiserv; | |
2071 | param.lsa_type = lsa_type; | |
2072 | param.opaque_type = opaque_type; | |
2073 | ||
2074 | switch (lsa_type) { | |
2075 | struct route_node *rn; | |
2076 | struct ospf_lsa *lsa; | |
2077 | ||
2078 | case OSPF_OPAQUE_LINK_LSA: | |
2079 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) | |
996c9314 | 2080 | LSDB_LOOP (OPAQUE_LINK_LSDB(area), rn, lsa) |
044506e7 DS |
2081 | apiserver_flush_opaque_type_callback( |
2082 | lsa, (void *)¶m, 0); | |
d62a17ae | 2083 | break; |
2084 | case OSPF_OPAQUE_AREA_LSA: | |
2085 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) | |
996c9314 | 2086 | LSDB_LOOP (OPAQUE_AREA_LSDB(area), rn, lsa) |
044506e7 DS |
2087 | apiserver_flush_opaque_type_callback( |
2088 | lsa, (void *)¶m, 0); | |
d62a17ae | 2089 | break; |
2090 | case OSPF_OPAQUE_AS_LSA: | |
996c9314 | 2091 | LSDB_LOOP (OPAQUE_LINK_LSDB(ospf), rn, lsa) |
044506e7 DS |
2092 | apiserver_flush_opaque_type_callback(lsa, |
2093 | (void *)¶m, 0); | |
d62a17ae | 2094 | break; |
2095 | default: | |
2096 | break; | |
2097 | } | |
2098 | return; | |
2d33f157 | 2099 | } |
2100 | ||
2101 | ||
2102 | /* ----------------------------------------------------------- | |
78dfa0c7 | 2103 | * Following are callback functions to handle opaque types |
2d33f157 | 2104 | * ----------------------------------------------------------- |
2105 | */ | |
2106 | ||
d62a17ae | 2107 | int ospf_apiserver_new_if(struct interface *ifp) |
2d33f157 | 2108 | { |
d62a17ae | 2109 | struct ospf_interface *oi; |
2110 | ||
2111 | /* For some strange reason it seems possible that we are invoked | |
2112 | with an interface that has no name. This seems to happen during | |
2113 | initialization. Return if this happens */ | |
2114 | ||
2115 | if (ifp->name[0] == '\0') { | |
2116 | /* interface has empty name */ | |
2117 | zlog_warn("ospf_apiserver_new_if: interface has no name?"); | |
2118 | return 0; | |
2119 | } | |
2120 | ||
2121 | /* zlog_warn for debugging */ | |
2122 | zlog_warn("ospf_apiserver_new_if"); | |
2123 | zlog_warn("ifp name=%s status=%d index=%d", ifp->name, ifp->status, | |
2124 | ifp->ifindex); | |
2125 | ||
2126 | if (ifp->name[0] == '\0') { | |
2127 | /* interface has empty name */ | |
2128 | zlog_warn("ospf_apiserver_new_if: interface has no name?"); | |
2129 | return 0; | |
2130 | } | |
2131 | ||
2132 | oi = ospf_apiserver_if_lookup_by_ifp(ifp); | |
2133 | ||
2134 | if (!oi) { | |
2135 | /* This interface is known to Zebra but not to OSPF daemon yet. | |
2136 | */ | |
2137 | zlog_warn( | |
2138 | "ospf_apiserver_new_if: interface %s not known to OSPFd?", | |
2139 | ifp->name); | |
2140 | return 0; | |
2141 | } | |
2142 | ||
2143 | assert(oi); | |
2144 | ||
2145 | /* New interface added to OSPF, tell clients about it */ | |
2146 | if (listcount(apiserver_list) > 0) { | |
2147 | ospf_apiserver_clients_notify_new_if(oi); | |
2148 | } | |
2149 | return 0; | |
2d33f157 | 2150 | } |
2151 | ||
d62a17ae | 2152 | int ospf_apiserver_del_if(struct interface *ifp) |
2d33f157 | 2153 | { |
d62a17ae | 2154 | struct ospf_interface *oi; |
2155 | ||
2156 | /* zlog_warn for debugging */ | |
2157 | zlog_warn("ospf_apiserver_del_if"); | |
9165c5f5 | 2158 | zlog_warn("ifp name=%s status=%d index=%d", ifp->name, ifp->status, |
d62a17ae | 2159 | ifp->ifindex); |
2160 | ||
2161 | oi = ospf_apiserver_if_lookup_by_ifp(ifp); | |
2162 | ||
2163 | if (!oi) { | |
2164 | /* This interface is known to Zebra but not to OSPF daemon | |
2165 | anymore. No need to tell clients about it */ | |
97355a6d | 2166 | zlog_warn("ifp name=%s not known to OSPFd", ifp->name); |
d62a17ae | 2167 | return 0; |
2168 | } | |
2169 | ||
2170 | /* Interface deleted, tell clients about it */ | |
2171 | if (listcount(apiserver_list) > 0) { | |
2172 | ospf_apiserver_clients_notify_del_if(oi); | |
2173 | } | |
2174 | return 0; | |
2d33f157 | 2175 | } |
2176 | ||
d62a17ae | 2177 | void ospf_apiserver_ism_change(struct ospf_interface *oi, int old_state) |
2d33f157 | 2178 | { |
d62a17ae | 2179 | /* Tell clients about interface change */ |
2d33f157 | 2180 | |
d62a17ae | 2181 | /* zlog_warn for debugging */ |
2182 | zlog_warn("ospf_apiserver_ism_change"); | |
2183 | if (listcount(apiserver_list) > 0) { | |
2184 | ospf_apiserver_clients_notify_ism_change(oi); | |
2185 | } | |
2d33f157 | 2186 | |
d62a17ae | 2187 | zlog_warn("oi->ifp->name=%s", oi->ifp->name); |
2188 | zlog_warn("old_state=%d", old_state); | |
2189 | zlog_warn("oi->state=%d", oi->state); | |
2d33f157 | 2190 | } |
2191 | ||
d62a17ae | 2192 | void ospf_apiserver_nsm_change(struct ospf_neighbor *nbr, int old_status) |
2d33f157 | 2193 | { |
d62a17ae | 2194 | /* Neighbor status changed, tell clients about it */ |
2195 | zlog_warn("ospf_apiserver_nsm_change"); | |
2196 | if (listcount(apiserver_list) > 0) { | |
2197 | ospf_apiserver_clients_notify_nsm_change(nbr); | |
2198 | } | |
2d33f157 | 2199 | } |
2200 | ||
3e63092b RW |
2201 | void ospf_apiserver_show_info(struct vty *vty, struct json_object *json, |
2202 | struct ospf_lsa *lsa) | |
2d33f157 | 2203 | { |
d62a17ae | 2204 | struct opaque_lsa { |
2205 | struct lsa_header header; | |
d7c0a89a | 2206 | uint8_t data[1]; /* opaque data have variable length. This is |
d62a17ae | 2207 | start |
2208 | address */ | |
2209 | }; | |
2210 | struct opaque_lsa *olsa; | |
2211 | int opaquelen; | |
2212 | ||
2213 | olsa = (struct opaque_lsa *)lsa->data; | |
2214 | ||
2215 | if (VALID_OPAQUE_INFO_LEN(lsa->data)) | |
2216 | opaquelen = ntohs(lsa->data->length) - OSPF_LSA_HEADER_SIZE; | |
2217 | else | |
2218 | opaquelen = 0; | |
2219 | ||
2220 | /* Output information about opaque LSAs */ | |
97385ddd CH |
2221 | if (json) |
2222 | json_object_string_addf(json, "opaqueData", "%*pHXn", | |
2223 | (int)opaquelen, olsa->data); | |
2224 | else if (vty != NULL) { | |
d62a17ae | 2225 | int i; |
2226 | vty_out(vty, | |
2227 | " Added using OSPF API: %u octets of opaque data %s\n", | |
2228 | opaquelen, | |
2229 | VALID_OPAQUE_INFO_LEN(lsa->data) ? "" | |
2230 | : "(Invalid length?)"); | |
2231 | vty_out(vty, " Opaque data: "); | |
2232 | ||
2233 | for (i = 0; i < opaquelen; i++) { | |
2234 | vty_out(vty, "0x%x ", olsa->data[i]); | |
2235 | } | |
2236 | vty_out(vty, "\n"); | |
2237 | } else { | |
2238 | int i; | |
2239 | zlog_debug( | |
2240 | " Added using OSPF API: %u octets of opaque data %s", | |
2241 | opaquelen, | |
2242 | VALID_OPAQUE_INFO_LEN(lsa->data) ? "" | |
2243 | : "(Invalid length?)"); | |
2244 | zlog_debug(" Opaque data: "); | |
2245 | ||
2246 | for (i = 0; i < opaquelen; i++) { | |
2247 | zlog_debug("0x%x ", olsa->data[i]); | |
2248 | } | |
d62a17ae | 2249 | } |
2250 | return; | |
2d33f157 | 2251 | } |
2252 | ||
2253 | /* ----------------------------------------------------------- | |
78dfa0c7 | 2254 | * Following are functions to notify clients about events |
2d33f157 | 2255 | * ----------------------------------------------------------- |
2256 | */ | |
2257 | ||
2258 | /* Send a message to all clients. This is useful for messages | |
2259 | that need to be notified to all clients (such as interface | |
2260 | changes) */ | |
2261 | ||
d62a17ae | 2262 | void ospf_apiserver_clients_notify_all(struct msg *msg) |
2d33f157 | 2263 | { |
d62a17ae | 2264 | struct listnode *node, *nnode; |
2265 | struct ospf_apiserver *apiserv; | |
2d33f157 | 2266 | |
d62a17ae | 2267 | /* Send message to all clients */ |
2268 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) | |
2269 | ospf_apiserver_send_msg(apiserv, msg); | |
2d33f157 | 2270 | } |
2271 | ||
2272 | /* An interface is now ready to accept opaque LSAs. Notify all | |
2273 | clients that registered to use this opaque type */ | |
d62a17ae | 2274 | void ospf_apiserver_clients_notify_ready_type9(struct ospf_interface *oi) |
2d33f157 | 2275 | { |
d62a17ae | 2276 | struct listnode *node, *nnode; |
2277 | struct msg *msg; | |
2278 | struct ospf_apiserver *apiserv; | |
2279 | ||
2280 | assert(oi); | |
2281 | if (!oi->address) { | |
2282 | zlog_warn("Interface has no address?"); | |
2283 | return; | |
2284 | } | |
2285 | ||
2286 | if (!ospf_apiserver_is_ready_type9(oi)) { | |
2287 | zlog_warn("Interface not ready for type 9?"); | |
2288 | return; | |
2289 | } | |
2290 | ||
2291 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2292 | struct listnode *node2, *nnode2; | |
2293 | struct registered_opaque_type *r; | |
2294 | ||
2295 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
2296 | r)) { | |
2297 | if (r->lsa_type == OSPF_OPAQUE_LINK_LSA) { | |
2298 | msg = new_msg_ready_notify( | |
2299 | 0, OSPF_OPAQUE_LINK_LSA, r->opaque_type, | |
2300 | oi->address->u.prefix4); | |
2301 | if (!msg) { | |
2302 | zlog_warn( | |
2303 | "ospf_apiserver_clients_notify_ready_type9: new_msg_ready_notify failed"); | |
2d33f157 | 2304 | #ifdef NOTYET |
d62a17ae | 2305 | /* Cannot allocate new message. What |
2306 | * should we do? */ | |
2307 | ospf_apiserver_free(apiserv); | |
2d33f157 | 2308 | #endif |
d62a17ae | 2309 | goto out; |
2310 | } | |
2d33f157 | 2311 | |
d62a17ae | 2312 | ospf_apiserver_send_msg(apiserv, msg); |
2313 | msg_free(msg); | |
2314 | } | |
2315 | } | |
2d33f157 | 2316 | } |
2d33f157 | 2317 | |
2318 | out: | |
d62a17ae | 2319 | return; |
2d33f157 | 2320 | } |
2321 | ||
d62a17ae | 2322 | void ospf_apiserver_clients_notify_ready_type10(struct ospf_area *area) |
2d33f157 | 2323 | { |
d62a17ae | 2324 | struct listnode *node, *nnode; |
2325 | struct msg *msg; | |
2326 | struct ospf_apiserver *apiserv; | |
2327 | ||
2328 | assert(area); | |
2329 | ||
2330 | if (!ospf_apiserver_is_ready_type10(area)) { | |
2331 | zlog_warn("Area not ready for type 10?"); | |
2332 | return; | |
2333 | } | |
2334 | ||
2335 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2336 | struct listnode *node2, *nnode2; | |
2337 | struct registered_opaque_type *r; | |
2338 | ||
2339 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
2340 | r)) { | |
2341 | if (r->lsa_type == OSPF_OPAQUE_AREA_LSA) { | |
2342 | msg = new_msg_ready_notify( | |
2343 | 0, OSPF_OPAQUE_AREA_LSA, r->opaque_type, | |
2344 | area->area_id); | |
2345 | if (!msg) { | |
2346 | zlog_warn( | |
2347 | "ospf_apiserver_clients_notify_ready_type10: new_msg_ready_nofity failed"); | |
2d33f157 | 2348 | #ifdef NOTYET |
d62a17ae | 2349 | /* Cannot allocate new message. What |
2350 | * should we do? */ | |
2351 | ospf_apiserver_free(apiserv); | |
2d33f157 | 2352 | #endif |
d62a17ae | 2353 | goto out; |
2354 | } | |
2d33f157 | 2355 | |
d62a17ae | 2356 | ospf_apiserver_send_msg(apiserv, msg); |
2357 | msg_free(msg); | |
2358 | } | |
2359 | } | |
2d33f157 | 2360 | } |
2d33f157 | 2361 | |
2362 | out: | |
d62a17ae | 2363 | return; |
2d33f157 | 2364 | } |
2365 | ||
2366 | ||
d62a17ae | 2367 | void ospf_apiserver_clients_notify_ready_type11(struct ospf *top) |
2d33f157 | 2368 | { |
d62a17ae | 2369 | struct listnode *node, *nnode; |
2370 | struct msg *msg; | |
2371 | struct in_addr id_null = {.s_addr = 0L}; | |
2372 | struct ospf_apiserver *apiserv; | |
2373 | ||
2374 | assert(top); | |
2375 | ||
2376 | if (!ospf_apiserver_is_ready_type11(top)) { | |
2377 | zlog_warn("AS not ready for type 11?"); | |
2378 | return; | |
2379 | } | |
2380 | ||
2381 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2382 | struct listnode *node2, *nnode2; | |
2383 | struct registered_opaque_type *r; | |
2384 | ||
2385 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
2386 | r)) { | |
2387 | if (r->lsa_type == OSPF_OPAQUE_AS_LSA) { | |
2388 | msg = new_msg_ready_notify( | |
2389 | 0, OSPF_OPAQUE_AS_LSA, r->opaque_type, | |
2390 | id_null); | |
2391 | if (!msg) { | |
2392 | zlog_warn( | |
2393 | "ospf_apiserver_clients_notify_ready_type11: new_msg_ready_notify failed"); | |
2d33f157 | 2394 | #ifdef NOTYET |
d62a17ae | 2395 | /* Cannot allocate new message. What |
2396 | * should we do? */ | |
2397 | ospf_apiserver_free(apiserv); | |
2d33f157 | 2398 | #endif |
d62a17ae | 2399 | goto out; |
2400 | } | |
2d33f157 | 2401 | |
d62a17ae | 2402 | ospf_apiserver_send_msg(apiserv, msg); |
2403 | msg_free(msg); | |
2404 | } | |
2405 | } | |
2d33f157 | 2406 | } |
2d33f157 | 2407 | |
2408 | out: | |
d62a17ae | 2409 | return; |
2d33f157 | 2410 | } |
2411 | ||
d62a17ae | 2412 | void ospf_apiserver_clients_notify_new_if(struct ospf_interface *oi) |
2d33f157 | 2413 | { |
d62a17ae | 2414 | struct msg *msg; |
2415 | ||
2416 | msg = new_msg_new_if(0, oi->address->u.prefix4, oi->area->area_id); | |
2417 | if (msg != NULL) { | |
2418 | ospf_apiserver_clients_notify_all(msg); | |
2419 | msg_free(msg); | |
2420 | } | |
2d33f157 | 2421 | } |
2422 | ||
d62a17ae | 2423 | void ospf_apiserver_clients_notify_del_if(struct ospf_interface *oi) |
2d33f157 | 2424 | { |
d62a17ae | 2425 | struct msg *msg; |
2426 | ||
2427 | msg = new_msg_del_if(0, oi->address->u.prefix4); | |
2428 | if (msg != NULL) { | |
2429 | ospf_apiserver_clients_notify_all(msg); | |
2430 | msg_free(msg); | |
2431 | } | |
2d33f157 | 2432 | } |
2433 | ||
d62a17ae | 2434 | void ospf_apiserver_clients_notify_ism_change(struct ospf_interface *oi) |
2d33f157 | 2435 | { |
d62a17ae | 2436 | struct msg *msg; |
2437 | struct in_addr ifaddr = {.s_addr = 0L}; | |
2438 | struct in_addr area_id = {.s_addr = 0L}; | |
2439 | ||
2440 | assert(oi); | |
2441 | assert(oi->ifp); | |
2442 | ||
2443 | if (oi->address) { | |
2444 | ifaddr = oi->address->u.prefix4; | |
2445 | } | |
2446 | if (oi->area) { | |
2447 | area_id = oi->area->area_id; | |
2448 | } | |
2449 | ||
2450 | msg = new_msg_ism_change(0, ifaddr, area_id, oi->state); | |
2451 | if (!msg) { | |
2452 | zlog_warn( | |
2453 | "apiserver_clients_notify_ism_change: msg_new failed"); | |
2454 | return; | |
2455 | } | |
2456 | ||
2457 | ospf_apiserver_clients_notify_all(msg); | |
2458 | msg_free(msg); | |
2d33f157 | 2459 | } |
2460 | ||
d62a17ae | 2461 | void ospf_apiserver_clients_notify_nsm_change(struct ospf_neighbor *nbr) |
2d33f157 | 2462 | { |
d62a17ae | 2463 | struct msg *msg; |
9d162466 | 2464 | struct in_addr ifaddr; |
7295876a | 2465 | struct in_addr nbraddr; |
2d33f157 | 2466 | |
d62a17ae | 2467 | assert(nbr); |
2d33f157 | 2468 | |
45559c4d | 2469 | ifaddr = nbr->oi->address->u.prefix4; |
2d33f157 | 2470 | |
d62a17ae | 2471 | nbraddr = nbr->address.u.prefix4; |
2d33f157 | 2472 | |
d62a17ae | 2473 | msg = new_msg_nsm_change(0, ifaddr, nbraddr, nbr->router_id, |
2474 | nbr->state); | |
2475 | if (!msg) { | |
2476 | zlog_warn( | |
2477 | "apiserver_clients_notify_nsm_change: msg_new failed"); | |
2478 | return; | |
2479 | } | |
2d33f157 | 2480 | |
d62a17ae | 2481 | ospf_apiserver_clients_notify_all(msg); |
2482 | msg_free(msg); | |
2d33f157 | 2483 | } |
2484 | ||
b1e40ef0 CH |
2485 | static int apiserver_clients_lsa_change_notify(uint8_t msgtype, |
2486 | struct ospf_lsa *lsa) | |
2d33f157 | 2487 | { |
d62a17ae | 2488 | struct msg *msg; |
2489 | struct listnode *node, *nnode; | |
2490 | struct ospf_apiserver *apiserv; | |
2491 | ||
2492 | /* Default area for AS-External and Opaque11 LSAs */ | |
2493 | struct in_addr area_id = {.s_addr = 0L}; | |
2494 | ||
2495 | /* Default interface for non Opaque9 LSAs */ | |
2496 | struct in_addr ifaddr = {.s_addr = 0L}; | |
2497 | ||
2498 | if (lsa->area) { | |
2499 | area_id = lsa->area->area_id; | |
2500 | } | |
2501 | if (lsa->data->type == OSPF_OPAQUE_LINK_LSA) { | |
2502 | assert(lsa->oi); | |
2503 | ifaddr = lsa->oi->address->u.prefix4; | |
2504 | } | |
2505 | ||
2506 | /* Prepare message that can be sent to clients that have a matching | |
2507 | filter */ | |
2508 | msg = new_msg_lsa_change_notify(msgtype, 0L, /* no sequence number */ | |
2509 | ifaddr, area_id, | |
2510 | lsa->flags & OSPF_LSA_SELF, lsa->data); | |
2511 | if (!msg) { | |
2512 | zlog_warn( | |
2513 | "apiserver_clients_lsa_change_notify: msg_new failed"); | |
b1e40ef0 | 2514 | return -1; |
d62a17ae | 2515 | } |
2516 | ||
2517 | /* Now send message to all clients with a matching filter */ | |
2518 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2519 | struct lsa_filter_type *filter; | |
d7c0a89a QY |
2520 | uint16_t mask; |
2521 | uint32_t *area; | |
d62a17ae | 2522 | int i; |
2523 | ||
2524 | /* Check filter for this client. */ | |
2525 | filter = apiserv->filter; | |
2526 | ||
2527 | /* Check area IDs in case of non AS-E LSAs. | |
2528 | * If filter has areas (num_areas > 0), | |
2529 | * then one of the areas must match the area ID of this LSA. */ | |
2530 | ||
2531 | i = filter->num_areas; | |
2532 | if ((lsa->data->type == OSPF_AS_EXTERNAL_LSA) | |
2533 | || (lsa->data->type == OSPF_OPAQUE_AS_LSA)) { | |
2534 | i = 0; | |
2d33f157 | 2535 | } |
d62a17ae | 2536 | |
2537 | if (i > 0) { | |
d7c0a89a | 2538 | area = (uint32_t *)(filter + 1); |
d62a17ae | 2539 | while (i) { |
2540 | if (*area == area_id.s_addr) { | |
2541 | break; | |
2542 | } | |
2543 | i--; | |
2544 | area++; | |
2545 | } | |
2546 | } else { | |
2547 | i = 1; | |
2548 | } | |
2549 | ||
2550 | if (i > 0) { | |
2551 | /* Area match. Check LSA type. */ | |
2552 | mask = ntohs(filter->typemask); | |
2553 | ||
2554 | if (mask & Power2[lsa->data->type]) { | |
2555 | /* Type also matches. Check origin. */ | |
2556 | if ((filter->origin == ANY_ORIGIN) | |
2557 | || (filter->origin == IS_LSA_SELF(lsa))) { | |
2558 | ospf_apiserver_send_msg(apiserv, msg); | |
2559 | } | |
2560 | } | |
2d33f157 | 2561 | } |
2d33f157 | 2562 | } |
d62a17ae | 2563 | /* Free message since it is not used anymore */ |
2564 | msg_free(msg); | |
b1e40ef0 CH |
2565 | |
2566 | return 0; | |
2d33f157 | 2567 | } |
2568 | ||
2569 | ||
2570 | /* ------------------------------------------------------------- | |
78dfa0c7 | 2571 | * Following are hooks invoked when LSAs are updated or deleted |
2d33f157 | 2572 | * ------------------------------------------------------------- |
2573 | */ | |
2574 | ||
2575 | ||
b1e40ef0 | 2576 | int ospf_apiserver_lsa_update(struct ospf_lsa *lsa) |
2d33f157 | 2577 | { |
d62a17ae | 2578 | |
2579 | /* Only notify this update if the LSA's age is smaller than | |
2580 | MAXAGE. Otherwise clients would see LSA updates with max age just | |
2581 | before they are deleted from the LSDB. LSA delete messages have | |
2582 | MAXAGE too but should not be filtered. */ | |
b1e40ef0 | 2583 | if (IS_LSA_MAXAGE(lsa)) |
d62a17ae | 2584 | return 0; |
b1e40ef0 | 2585 | return apiserver_clients_lsa_change_notify(MSG_LSA_UPDATE_NOTIFY, lsa); |
2d33f157 | 2586 | } |
2587 | ||
d62a17ae | 2588 | int ospf_apiserver_lsa_delete(struct ospf_lsa *lsa) |
2d33f157 | 2589 | { |
b1e40ef0 | 2590 | return apiserver_clients_lsa_change_notify(MSG_LSA_DELETE_NOTIFY, lsa); |
2d33f157 | 2591 | } |
2592 | ||
149491af CH |
2593 | /* ------------------------------------------------------------- |
2594 | * Reachable functions | |
2595 | * ------------------------------------------------------------- | |
2596 | */ | |
2597 | ||
2598 | static inline int cmp_route_nodes(struct route_node *orn, | |
2599 | struct route_node *nrn) | |
2600 | { | |
2601 | if (!orn) | |
2602 | return 1; | |
2603 | else if (!nrn) | |
2604 | return -1; | |
2605 | else if (orn->p.u.prefix4.s_addr < nrn->p.u.prefix4.s_addr) | |
2606 | return -1; | |
2607 | else if (orn->p.u.prefix4.s_addr > nrn->p.u.prefix4.s_addr) | |
2608 | return 1; | |
2609 | else | |
2610 | return 0; | |
2611 | } | |
2612 | ||
2613 | void ospf_apiserver_notify_reachable(struct route_table *ort, | |
2614 | struct route_table *nrt) | |
2615 | { | |
2616 | struct msg *msg; | |
2617 | struct msg_reachable_change *areach; | |
2618 | struct route_node *orn, *nrn; | |
2619 | const uint insz = sizeof(struct in_addr); | |
2620 | struct in_addr *abuf = NULL, *dbuf = NULL; | |
2621 | struct in_addr *a = NULL, *d = NULL; | |
2622 | uint nadd, nremove; | |
2623 | int cmp; | |
2624 | ||
2625 | if (!ort && !nrt) { | |
2626 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2627 | zlog_debug("%s: no routing tables", __func__); | |
2628 | return; | |
2629 | } | |
2630 | if (nrt && nrt->count) | |
2631 | a = abuf = XCALLOC(MTYPE_OSPF_APISERVER, insz * nrt->count); | |
2632 | if (ort && ort->count) | |
2633 | d = dbuf = XCALLOC(MTYPE_OSPF_APISERVER, insz * ort->count); | |
2634 | ||
2635 | /* walk both tables */ | |
2636 | orn = ort ? route_top(ort) : NULL; | |
2637 | nrn = nrt ? route_top(nrt) : NULL; | |
2638 | while (orn || nrn) { | |
2639 | if (orn && !listhead((struct list *)orn->info)) { | |
2640 | orn = route_next(orn); | |
2641 | continue; | |
2642 | } | |
2643 | if (nrn && !listhead((struct list *)nrn->info)) { | |
2644 | nrn = route_next(nrn); | |
2645 | continue; | |
2646 | } | |
2647 | cmp = cmp_route_nodes(orn, nrn); | |
2648 | if (!cmp) { | |
2649 | /* if old == new advance old and new */ | |
2650 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2651 | zlog_debug("keeping router id: %pI4", | |
2652 | &orn->p.u.prefix4); | |
2653 | orn = route_next(orn); | |
2654 | nrn = route_next(nrn); | |
2655 | } else if (cmp < 0) { | |
2656 | assert(d != NULL); /* Silence SA warning */ | |
2657 | ||
2658 | /* if old < new, delete old, advance old */ | |
2659 | *d++ = orn->p.u.prefix4; | |
2660 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2661 | zlog_debug("removing router id: %pI4", | |
2662 | &orn->p.u.prefix4); | |
2663 | orn = route_next(orn); | |
2664 | } else { | |
2665 | assert(a != NULL); /* Silence SA warning */ | |
2666 | ||
2667 | /* if new < old, add new, advance new */ | |
2668 | *a++ = nrn->p.u.prefix4; | |
2669 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2670 | zlog_debug("adding router id: %pI4", | |
2671 | &nrn->p.u.prefix4); | |
2672 | nrn = route_next(nrn); | |
2673 | } | |
2674 | } | |
2675 | ||
2676 | nadd = abuf ? (a - abuf) : 0; | |
2677 | nremove = dbuf ? (d - dbuf) : 0; | |
2678 | a = abuf; | |
2679 | d = dbuf; | |
2680 | ||
2681 | while (nadd + nremove) { | |
2682 | msg = new_msg_reachable_change(0, nadd, a, nremove, d); | |
2683 | areach = (struct msg_reachable_change *)STREAM_DATA(msg->s); | |
2684 | ||
2685 | a += ntohs(areach->nadd); | |
2686 | nadd = nadd - ntohs(areach->nadd); | |
2687 | ||
2688 | d += ntohs(areach->nremove); | |
2689 | nremove = nremove - ntohs(areach->nremove); | |
2690 | ||
2691 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2692 | zlog_debug("%s: adding %d removing %d", __func__, | |
2693 | ntohs(areach->nadd), ntohs(areach->nremove)); | |
2694 | ospf_apiserver_clients_notify_all(msg); | |
2695 | msg_free(msg); | |
2696 | } | |
2697 | if (abuf) | |
2698 | XFREE(MTYPE_OSPF_APISERVER, abuf); | |
2699 | if (dbuf) | |
2700 | XFREE(MTYPE_OSPF_APISERVER, dbuf); | |
2701 | } | |
2702 | ||
2703 | ||
44038c7a CH |
2704 | void ospf_apiserver_clients_notify_router_id_change(struct in_addr router_id) |
2705 | { | |
2706 | struct msg *msg; | |
2707 | ||
2708 | msg = new_msg_router_id_change(0, router_id); | |
2709 | if (!msg) { | |
2710 | zlog_warn("%s: new_msg_router_id_change failed", __func__); | |
2711 | return; | |
2712 | } | |
2713 | ||
2714 | ospf_apiserver_clients_notify_all(msg); | |
2715 | msg_free(msg); | |
2716 | } | |
2717 | ||
2718 | ||
2d33f157 | 2719 | #endif /* SUPPORT_OSPF_API */ |