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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2d33f157 | 2 | /* |
3 | * Server side of OSPF API. | |
4 | * Copyright (C) 2001, 2002 Ralph Keller | |
44038c7a | 5 | * Copyright (c) 2022, LabN Consulting, L.L.C. |
2d33f157 | 6 | */ |
7 | ||
8 | #include <zebra.h> | |
9 | ||
10 | #ifdef SUPPORT_OSPF_API | |
2d33f157 | 11 | |
12 | #include "linklist.h" | |
13 | #include "prefix.h" | |
14 | #include "if.h" | |
15 | #include "table.h" | |
16 | #include "memory.h" | |
17 | #include "command.h" | |
18 | #include "vty.h" | |
19 | #include "stream.h" | |
20 | #include "log.h" | |
21 | #include "thread.h" | |
22 | #include "hash.h" | |
d62a17ae | 23 | #include "sockunion.h" /* for inet_aton() */ |
2d33f157 | 24 | #include "buffer.h" |
25 | ||
26 | #include <sys/types.h> | |
27 | ||
d62a17ae | 28 | #include "ospfd/ospfd.h" /* for "struct thread_master" */ |
2d33f157 | 29 | #include "ospfd/ospf_interface.h" |
30 | #include "ospfd/ospf_ism.h" | |
31 | #include "ospfd/ospf_asbr.h" | |
32 | #include "ospfd/ospf_lsa.h" | |
33 | #include "ospfd/ospf_lsdb.h" | |
34 | #include "ospfd/ospf_neighbor.h" | |
35 | #include "ospfd/ospf_nsm.h" | |
36 | #include "ospfd/ospf_flood.h" | |
37 | #include "ospfd/ospf_packet.h" | |
38 | #include "ospfd/ospf_spf.h" | |
39 | #include "ospfd/ospf_dump.h" | |
40 | #include "ospfd/ospf_route.h" | |
41 | #include "ospfd/ospf_ase.h" | |
42 | #include "ospfd/ospf_zebra.h" | |
85c9b439 | 43 | #include "ospfd/ospf_errors.h" |
29a1a53d | 44 | #include "ospfd/ospf_memory.h" |
2d33f157 | 45 | |
46 | #include "ospfd/ospf_api.h" | |
47 | #include "ospfd/ospf_apiserver.h" | |
48 | ||
29a1a53d DS |
49 | DEFINE_MTYPE_STATIC(OSPFD, APISERVER, "API Server"); |
50 | DEFINE_MTYPE_STATIC(OSPFD, APISERVER_MSGFILTER, "API Server Message Filter"); | |
51 | ||
2d33f157 | 52 | /* This is an implementation of an API to the OSPF daemon that allows |
53 | * external applications to access the OSPF daemon through socket | |
54 | * connections. The application can use this API to inject its own | |
55 | * opaque LSAs and flood them to other OSPF daemons. Other OSPF | |
56 | * daemons then receive these LSAs and inform applications through the | |
57 | * API by sending a corresponding message. The application can also | |
58 | * register to receive all LSA types (in addition to opaque types) and | |
59 | * use this information to reconstruct the OSPF's LSDB. The OSPF | |
60 | * daemon supports multiple applications concurrently. */ | |
61 | ||
62 | /* List of all active connections. */ | |
87d6f87a | 63 | struct list *apiserver_list; |
2d33f157 | 64 | |
65 | /* ----------------------------------------------------------- | |
66 | * Functions to lookup interfaces | |
67 | * ----------------------------------------------------------- | |
68 | */ | |
69 | ||
d62a17ae | 70 | struct ospf_interface *ospf_apiserver_if_lookup_by_addr(struct in_addr address) |
2d33f157 | 71 | { |
d62a17ae | 72 | struct listnode *node, *nnode; |
73 | struct ospf_interface *oi; | |
b5a8894d | 74 | struct ospf *ospf = NULL; |
99b7c5d6 | 75 | |
b5a8894d CS |
76 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
77 | if (!ospf) | |
d62a17ae | 78 | return NULL; |
2d33f157 | 79 | |
d62a17ae | 80 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) |
81 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
82 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
83 | return oi; | |
87d6f87a | 84 | |
d62a17ae | 85 | return NULL; |
2d33f157 | 86 | } |
87 | ||
d62a17ae | 88 | struct ospf_interface *ospf_apiserver_if_lookup_by_ifp(struct interface *ifp) |
2d33f157 | 89 | { |
d62a17ae | 90 | struct listnode *node, *nnode; |
91 | struct ospf_interface *oi; | |
b5a8894d | 92 | struct ospf *ospf = NULL; |
99b7c5d6 | 93 | |
b5a8894d CS |
94 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
95 | if (!ospf) | |
d62a17ae | 96 | return NULL; |
2d33f157 | 97 | |
d62a17ae | 98 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) |
99 | if (oi->ifp == ifp) | |
100 | return oi; | |
87d6f87a | 101 | |
d62a17ae | 102 | return NULL; |
2d33f157 | 103 | } |
104 | ||
105 | /* ----------------------------------------------------------- | |
106 | * Initialization | |
107 | * ----------------------------------------------------------- | |
108 | */ | |
109 | ||
d62a17ae | 110 | unsigned short ospf_apiserver_getport(void) |
2d33f157 | 111 | { |
d62a17ae | 112 | struct servent *sp = getservbyname("ospfapi", "tcp"); |
2d33f157 | 113 | |
d62a17ae | 114 | return sp ? ntohs(sp->s_port) : OSPF_API_SYNC_PORT; |
2d33f157 | 115 | } |
116 | ||
117 | /* Initialize OSPF API module. Invoked from ospf_opaque_init() */ | |
d62a17ae | 118 | int ospf_apiserver_init(void) |
2d33f157 | 119 | { |
d62a17ae | 120 | int fd; |
121 | int rc = -1; | |
122 | ||
123 | /* Create new socket for synchronous messages. */ | |
124 | fd = ospf_apiserver_serv_sock_family(ospf_apiserver_getport(), AF_INET); | |
125 | ||
126 | if (fd < 0) | |
127 | goto out; | |
128 | ||
129 | /* Schedule new thread that handles accepted connections. */ | |
130 | ospf_apiserver_event(OSPF_APISERVER_ACCEPT, fd, NULL); | |
131 | ||
132 | /* Initialize list that keeps track of all connections. */ | |
133 | apiserver_list = list_new(); | |
134 | ||
135 | /* Register opaque-independent call back functions. These functions | |
136 | are invoked on ISM, NSM changes and LSA update and LSA deletes */ | |
137 | rc = ospf_register_opaque_functab( | |
138 | 0 /* all LSAs */, 0 /* all opaque types */, | |
139 | ospf_apiserver_new_if, ospf_apiserver_del_if, | |
140 | ospf_apiserver_ism_change, ospf_apiserver_nsm_change, NULL, | |
141 | NULL, NULL, NULL, /* ospf_apiserver_show_info */ | |
142 | NULL, /* originator_func */ | |
143 | NULL, /* ospf_apiserver_lsa_refresher */ | |
144 | ospf_apiserver_lsa_update, ospf_apiserver_lsa_delete); | |
145 | if (rc != 0) { | |
ade6974d | 146 | flog_warn( |
cf444bcf | 147 | EC_OSPF_OPAQUE_REGISTRATION, |
ade6974d | 148 | "ospf_apiserver_init: Failed to register opaque type [0/0]"); |
d62a17ae | 149 | } |
150 | ||
151 | rc = 0; | |
2d33f157 | 152 | |
153 | out: | |
d62a17ae | 154 | return rc; |
2d33f157 | 155 | } |
156 | ||
157 | /* Terminate OSPF API module. */ | |
d62a17ae | 158 | void ospf_apiserver_term(void) |
2d33f157 | 159 | { |
d62a17ae | 160 | struct ospf_apiserver *apiserv; |
161 | ||
162 | /* Unregister wildcard [0/0] type */ | |
163 | ospf_delete_opaque_functab(0 /* all LSAs */, 0 /* all opaque types */); | |
164 | ||
165 | /* | |
166 | * Free all client instances. ospf_apiserver_free removes the node | |
167 | * from the list, so we examine the head of the list anew each time. | |
168 | */ | |
169 | while (apiserver_list | |
170 | && (apiserv = listgetdata(listhead(apiserver_list))) != NULL) | |
171 | ospf_apiserver_free(apiserv); | |
172 | ||
173 | /* Free client list itself */ | |
174 | if (apiserver_list) | |
6a154c88 | 175 | list_delete(&apiserver_list); |
d62a17ae | 176 | |
177 | /* Free wildcard list */ | |
178 | /* XXX */ | |
2d33f157 | 179 | } |
180 | ||
d7c0a89a QY |
181 | static struct ospf_apiserver *lookup_apiserver(uint8_t lsa_type, |
182 | uint8_t opaque_type) | |
2d33f157 | 183 | { |
d62a17ae | 184 | struct listnode *n1, *n2; |
185 | struct registered_opaque_type *r; | |
186 | struct ospf_apiserver *apiserv, *found = NULL; | |
187 | ||
188 | /* XXX: this approaches O(n**2) */ | |
189 | for (ALL_LIST_ELEMENTS_RO(apiserver_list, n1, apiserv)) { | |
190 | for (ALL_LIST_ELEMENTS_RO(apiserv->opaque_types, n2, r)) | |
191 | if (r->lsa_type == lsa_type | |
192 | && r->opaque_type == opaque_type) { | |
193 | found = apiserv; | |
194 | goto out; | |
195 | } | |
196 | } | |
2d33f157 | 197 | out: |
d62a17ae | 198 | return found; |
2d33f157 | 199 | } |
200 | ||
d62a17ae | 201 | static struct ospf_apiserver *lookup_apiserver_by_lsa(struct ospf_lsa *lsa) |
2d33f157 | 202 | { |
d62a17ae | 203 | struct lsa_header *lsah = lsa->data; |
204 | struct ospf_apiserver *found = NULL; | |
205 | ||
206 | if (IS_OPAQUE_LSA(lsah->type)) { | |
207 | found = lookup_apiserver( | |
208 | lsah->type, GET_OPAQUE_TYPE(ntohl(lsah->id.s_addr))); | |
209 | } | |
210 | return found; | |
2d33f157 | 211 | } |
212 | ||
213 | /* ----------------------------------------------------------- | |
78dfa0c7 | 214 | * Following are functions to manage client connections. |
2d33f157 | 215 | * ----------------------------------------------------------- |
216 | */ | |
d62a17ae | 217 | static int ospf_apiserver_new_lsa_hook(struct ospf_lsa *lsa) |
2d33f157 | 218 | { |
d62a17ae | 219 | if (IS_DEBUG_OSPF_EVENT) |
220 | zlog_debug("API: Put LSA(%p)[%s] into reserve, total=%ld", | |
221 | (void *)lsa, dump_lsa_key(lsa), lsa->lsdb->total); | |
222 | return 0; | |
2d33f157 | 223 | } |
224 | ||
d62a17ae | 225 | static int ospf_apiserver_del_lsa_hook(struct ospf_lsa *lsa) |
2d33f157 | 226 | { |
d62a17ae | 227 | if (IS_DEBUG_OSPF_EVENT) |
228 | zlog_debug("API: Get LSA(%p)[%s] from reserve, total=%ld", | |
229 | (void *)lsa, dump_lsa_key(lsa), lsa->lsdb->total); | |
230 | return 0; | |
2d33f157 | 231 | } |
232 | ||
233 | /* Allocate new connection structure. */ | |
d62a17ae | 234 | struct ospf_apiserver *ospf_apiserver_new(int fd_sync, int fd_async) |
2d33f157 | 235 | { |
d62a17ae | 236 | struct ospf_apiserver *new = |
29a1a53d | 237 | XMALLOC(MTYPE_APISERVER, sizeof(struct ospf_apiserver)); |
2d33f157 | 238 | |
29a1a53d | 239 | new->filter = XMALLOC(MTYPE_APISERVER_MSGFILTER, |
d62a17ae | 240 | sizeof(struct lsa_filter_type)); |
2d33f157 | 241 | |
d62a17ae | 242 | new->fd_sync = fd_sync; |
243 | new->fd_async = fd_async; | |
2d33f157 | 244 | |
d62a17ae | 245 | /* list of registered opaque types that application uses */ |
246 | new->opaque_types = list_new(); | |
2d33f157 | 247 | |
d62a17ae | 248 | /* Initialize temporary strage for LSA instances to be refreshed. */ |
249 | memset(&new->reserve, 0, sizeof(struct ospf_lsdb)); | |
250 | ospf_lsdb_init(&new->reserve); | |
2d33f157 | 251 | |
d62a17ae | 252 | new->reserve.new_lsa_hook = ospf_apiserver_new_lsa_hook; /* debug */ |
253 | new->reserve.del_lsa_hook = ospf_apiserver_del_lsa_hook; /* debug */ | |
2d33f157 | 254 | |
d62a17ae | 255 | new->out_sync_fifo = msg_fifo_new(); |
256 | new->out_async_fifo = msg_fifo_new(); | |
257 | new->t_sync_read = NULL; | |
2d33f157 | 258 | #ifdef USE_ASYNC_READ |
d62a17ae | 259 | new->t_async_read = NULL; |
2d33f157 | 260 | #endif /* USE_ASYNC_READ */ |
d62a17ae | 261 | new->t_sync_write = NULL; |
262 | new->t_async_write = NULL; | |
2d33f157 | 263 | |
d62a17ae | 264 | new->filter->typemask = 0; /* filter all LSAs */ |
265 | new->filter->origin = ANY_ORIGIN; | |
266 | new->filter->num_areas = 0; | |
2d33f157 | 267 | |
d62a17ae | 268 | return new; |
2d33f157 | 269 | } |
270 | ||
14416b1f | 271 | void ospf_apiserver_event(enum ospf_apiserver_event event, int fd, |
d62a17ae | 272 | struct ospf_apiserver *apiserv) |
2d33f157 | 273 | { |
d62a17ae | 274 | switch (event) { |
275 | case OSPF_APISERVER_ACCEPT: | |
276 | (void)thread_add_read(master, ospf_apiserver_accept, apiserv, | |
277 | fd, NULL); | |
278 | break; | |
279 | case OSPF_APISERVER_SYNC_READ: | |
280 | apiserv->t_sync_read = NULL; | |
281 | thread_add_read(master, ospf_apiserver_read, apiserv, fd, | |
282 | &apiserv->t_sync_read); | |
283 | break; | |
2d33f157 | 284 | #ifdef USE_ASYNC_READ |
d62a17ae | 285 | case OSPF_APISERVER_ASYNC_READ: |
286 | apiserv->t_async_read = NULL; | |
287 | thread_add_read(master, ospf_apiserver_read, apiserv, fd, | |
288 | &apiserv->t_async_read); | |
289 | break; | |
2d33f157 | 290 | #endif /* USE_ASYNC_READ */ |
d62a17ae | 291 | case OSPF_APISERVER_SYNC_WRITE: |
292 | thread_add_write(master, ospf_apiserver_sync_write, apiserv, fd, | |
293 | &apiserv->t_sync_write); | |
294 | break; | |
295 | case OSPF_APISERVER_ASYNC_WRITE: | |
296 | thread_add_write(master, ospf_apiserver_async_write, apiserv, | |
297 | fd, &apiserv->t_async_write); | |
298 | break; | |
299 | } | |
2d33f157 | 300 | } |
301 | ||
302 | /* Free instance. First unregister all opaque types used by | |
d62a17ae | 303 | application, flush opaque LSAs injected by application |
2d33f157 | 304 | from network and close connection. */ |
d62a17ae | 305 | void ospf_apiserver_free(struct ospf_apiserver *apiserv) |
2d33f157 | 306 | { |
d62a17ae | 307 | struct listnode *node; |
2d33f157 | 308 | |
d62a17ae | 309 | /* Cancel read and write threads. */ |
bc1f09de | 310 | THREAD_OFF(apiserv->t_sync_read); |
2d33f157 | 311 | #ifdef USE_ASYNC_READ |
bc1f09de | 312 | THREAD_OFF(apiserv->t_async_read); |
2d33f157 | 313 | #endif /* USE_ASYNC_READ */ |
bc1f09de DS |
314 | THREAD_OFF(apiserv->t_sync_write); |
315 | THREAD_OFF(apiserv->t_async_write); | |
2d33f157 | 316 | |
d62a17ae | 317 | /* Unregister all opaque types that application registered |
318 | and flush opaque LSAs if still in LSDB. */ | |
2d33f157 | 319 | |
d62a17ae | 320 | while ((node = listhead(apiserv->opaque_types)) != NULL) { |
321 | struct registered_opaque_type *regtype = listgetdata(node); | |
2d33f157 | 322 | |
d62a17ae | 323 | ospf_apiserver_unregister_opaque_type( |
324 | apiserv, regtype->lsa_type, regtype->opaque_type); | |
325 | } | |
2d33f157 | 326 | |
d62a17ae | 327 | /* Close connections to OSPFd. */ |
328 | if (apiserv->fd_sync > 0) { | |
329 | close(apiserv->fd_sync); | |
330 | } | |
2d33f157 | 331 | |
d62a17ae | 332 | if (apiserv->fd_async > 0) { |
333 | close(apiserv->fd_async); | |
334 | } | |
2d33f157 | 335 | |
d62a17ae | 336 | /* Free fifos */ |
337 | msg_fifo_free(apiserv->out_sync_fifo); | |
338 | msg_fifo_free(apiserv->out_async_fifo); | |
2d33f157 | 339 | |
d62a17ae | 340 | /* Clear temporary strage for LSA instances to be refreshed. */ |
341 | ospf_lsdb_delete_all(&apiserv->reserve); | |
342 | ospf_lsdb_cleanup(&apiserv->reserve); | |
2d33f157 | 343 | |
d62a17ae | 344 | /* Remove from the list of active clients. */ |
345 | listnode_delete(apiserver_list, apiserv); | |
2d33f157 | 346 | |
d62a17ae | 347 | if (IS_DEBUG_OSPF_EVENT) |
348 | zlog_debug("API: Delete apiserv(%p), total#(%d)", | |
349 | (void *)apiserv, apiserver_list->count); | |
2d33f157 | 350 | |
d62a17ae | 351 | /* And free instance. */ |
29a1a53d | 352 | XFREE(MTYPE_APISERVER, apiserv); |
2d33f157 | 353 | } |
354 | ||
cc9f21da | 355 | void ospf_apiserver_read(struct thread *thread) |
2d33f157 | 356 | { |
d62a17ae | 357 | struct ospf_apiserver *apiserv; |
358 | struct msg *msg; | |
359 | int fd; | |
14416b1f | 360 | enum ospf_apiserver_event event; |
d62a17ae | 361 | |
362 | apiserv = THREAD_ARG(thread); | |
363 | fd = THREAD_FD(thread); | |
364 | ||
365 | if (fd == apiserv->fd_sync) { | |
366 | event = OSPF_APISERVER_SYNC_READ; | |
367 | apiserv->t_sync_read = NULL; | |
368 | ||
369 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 370 | zlog_debug("API: %s: Peer: %pI4/%u", __func__, |
96b663a3 | 371 | &apiserv->peer_sync.sin_addr, |
d62a17ae | 372 | ntohs(apiserv->peer_sync.sin_port)); |
373 | } | |
2d33f157 | 374 | #ifdef USE_ASYNC_READ |
d62a17ae | 375 | else if (fd == apiserv->fd_async) { |
376 | event = OSPF_APISERVER_ASYNC_READ; | |
377 | apiserv->t_async_read = NULL; | |
378 | ||
379 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 380 | zlog_debug("API: %s: Peer: %pI4/%u", __func__, |
96b663a3 | 381 | &apiserv->peer_async.sin_addr, |
d62a17ae | 382 | ntohs(apiserv->peer_async.sin_port)); |
383 | } | |
2d33f157 | 384 | #endif /* USE_ASYNC_READ */ |
d62a17ae | 385 | else { |
4adc415e | 386 | zlog_warn("%s: Unknown fd(%d)", __func__, fd); |
d62a17ae | 387 | ospf_apiserver_free(apiserv); |
cc9f21da | 388 | return; |
d62a17ae | 389 | } |
2d33f157 | 390 | |
d62a17ae | 391 | /* Read message from fd. */ |
392 | msg = msg_read(fd); | |
393 | if (msg == NULL) { | |
4adc415e | 394 | zlog_warn("%s: read failed on fd=%d, closing connection", |
395 | __func__, fd); | |
2d33f157 | 396 | |
d62a17ae | 397 | /* Perform cleanup. */ |
398 | ospf_apiserver_free(apiserv); | |
cc9f21da | 399 | return; |
d62a17ae | 400 | } |
2d33f157 | 401 | |
d62a17ae | 402 | if (IS_DEBUG_OSPF_EVENT) |
403 | msg_print(msg); | |
2d33f157 | 404 | |
d62a17ae | 405 | /* Dispatch to corresponding message handler. */ |
cc9f21da | 406 | ospf_apiserver_handle_msg(apiserv, msg); |
2d33f157 | 407 | |
d62a17ae | 408 | /* Prepare for next message, add read thread. */ |
409 | ospf_apiserver_event(event, fd, apiserv); | |
2d33f157 | 410 | |
d62a17ae | 411 | msg_free(msg); |
2d33f157 | 412 | } |
413 | ||
cc9f21da | 414 | void ospf_apiserver_sync_write(struct thread *thread) |
2d33f157 | 415 | { |
d62a17ae | 416 | struct ospf_apiserver *apiserv; |
417 | struct msg *msg; | |
418 | int fd; | |
419 | int rc = -1; | |
420 | ||
421 | apiserv = THREAD_ARG(thread); | |
422 | assert(apiserv); | |
423 | fd = THREAD_FD(thread); | |
424 | ||
425 | apiserv->t_sync_write = NULL; | |
426 | ||
427 | /* Sanity check */ | |
428 | if (fd != apiserv->fd_sync) { | |
4adc415e | 429 | zlog_warn("%s: Unknown fd=%d", __func__, fd); |
d62a17ae | 430 | goto out; |
431 | } | |
432 | ||
433 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 434 | zlog_debug("API: %s: Peer: %pI4/%u", __func__, |
96b663a3 | 435 | &apiserv->peer_sync.sin_addr, |
d62a17ae | 436 | ntohs(apiserv->peer_sync.sin_port)); |
437 | ||
438 | /* Check whether there is really a message in the fifo. */ | |
439 | msg = msg_fifo_pop(apiserv->out_sync_fifo); | |
440 | if (!msg) { | |
4adc415e | 441 | zlog_warn("API: %s: No message in Sync-FIFO?", __func__); |
cc9f21da | 442 | return; |
d62a17ae | 443 | } |
444 | ||
445 | if (IS_DEBUG_OSPF_EVENT) | |
446 | msg_print(msg); | |
447 | ||
448 | rc = msg_write(fd, msg); | |
449 | ||
450 | /* Once a message is dequeued, it should be freed anyway. */ | |
451 | msg_free(msg); | |
452 | ||
453 | if (rc < 0) { | |
4adc415e | 454 | zlog_warn("%s: write failed on fd=%d", __func__, fd); |
d62a17ae | 455 | goto out; |
456 | } | |
457 | ||
458 | ||
459 | /* If more messages are in sync message fifo, schedule write thread. */ | |
460 | if (msg_fifo_head(apiserv->out_sync_fifo)) { | |
461 | ospf_apiserver_event(OSPF_APISERVER_SYNC_WRITE, | |
462 | apiserv->fd_sync, apiserv); | |
463 | } | |
464 | ||
465 | out: | |
466 | ||
467 | if (rc < 0) { | |
468 | /* Perform cleanup and disconnect with peer */ | |
469 | ospf_apiserver_free(apiserv); | |
470 | } | |
2d33f157 | 471 | } |
472 | ||
473 | ||
cc9f21da | 474 | void ospf_apiserver_async_write(struct thread *thread) |
2d33f157 | 475 | { |
d62a17ae | 476 | struct ospf_apiserver *apiserv; |
477 | struct msg *msg; | |
478 | int fd; | |
479 | int rc = -1; | |
480 | ||
481 | apiserv = THREAD_ARG(thread); | |
482 | assert(apiserv); | |
483 | fd = THREAD_FD(thread); | |
484 | ||
485 | apiserv->t_async_write = NULL; | |
486 | ||
487 | /* Sanity check */ | |
488 | if (fd != apiserv->fd_async) { | |
4adc415e | 489 | zlog_warn("%s: Unknown fd=%d", __func__, fd); |
d62a17ae | 490 | goto out; |
491 | } | |
492 | ||
493 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 494 | zlog_debug("API: %s: Peer: %pI4/%u", __func__, |
96b663a3 | 495 | &apiserv->peer_async.sin_addr, |
d62a17ae | 496 | ntohs(apiserv->peer_async.sin_port)); |
497 | ||
498 | /* Check whether there is really a message in the fifo. */ | |
499 | msg = msg_fifo_pop(apiserv->out_async_fifo); | |
500 | if (!msg) { | |
4adc415e | 501 | zlog_warn("API: %s: No message in Async-FIFO?", __func__); |
cc9f21da | 502 | return; |
d62a17ae | 503 | } |
504 | ||
505 | if (IS_DEBUG_OSPF_EVENT) | |
506 | msg_print(msg); | |
507 | ||
508 | rc = msg_write(fd, msg); | |
509 | ||
510 | /* Once a message is dequeued, it should be freed anyway. */ | |
511 | msg_free(msg); | |
512 | ||
513 | if (rc < 0) { | |
4adc415e | 514 | zlog_warn("%s: write failed on fd=%d", __func__, fd); |
d62a17ae | 515 | goto out; |
516 | } | |
517 | ||
518 | ||
519 | /* If more messages are in async message fifo, schedule write thread. */ | |
520 | if (msg_fifo_head(apiserv->out_async_fifo)) { | |
521 | ospf_apiserver_event(OSPF_APISERVER_ASYNC_WRITE, | |
522 | apiserv->fd_async, apiserv); | |
523 | } | |
524 | ||
525 | out: | |
526 | ||
527 | if (rc < 0) { | |
528 | /* Perform cleanup and disconnect with peer */ | |
529 | ospf_apiserver_free(apiserv); | |
530 | } | |
2d33f157 | 531 | } |
532 | ||
533 | ||
d62a17ae | 534 | int ospf_apiserver_serv_sock_family(unsigned short port, int family) |
2d33f157 | 535 | { |
d62a17ae | 536 | union sockunion su; |
537 | int accept_sock; | |
538 | int rc; | |
539 | ||
540 | memset(&su, 0, sizeof(union sockunion)); | |
541 | su.sa.sa_family = family; | |
542 | ||
543 | /* Make new socket */ | |
544 | accept_sock = sockunion_stream_socket(&su); | |
545 | if (accept_sock < 0) | |
546 | return accept_sock; | |
547 | ||
548 | /* This is a server, so reuse address and port */ | |
549 | sockopt_reuseaddr(accept_sock); | |
550 | sockopt_reuseport(accept_sock); | |
551 | ||
552 | /* Bind socket to address and given port. */ | |
553 | rc = sockunion_bind(accept_sock, &su, port, NULL); | |
554 | if (rc < 0) { | |
555 | close(accept_sock); /* Close socket */ | |
556 | return rc; | |
557 | } | |
558 | ||
559 | /* Listen socket under queue length 3. */ | |
560 | rc = listen(accept_sock, 3); | |
561 | if (rc < 0) { | |
4adc415e | 562 | zlog_warn("%s: listen: %s", __func__, safe_strerror(errno)); |
d62a17ae | 563 | close(accept_sock); /* Close socket */ |
564 | return rc; | |
565 | } | |
566 | return accept_sock; | |
2d33f157 | 567 | } |
568 | ||
569 | ||
570 | /* Accept connection request from external applications. For each | |
571 | accepted connection allocate own connection instance. */ | |
cc9f21da | 572 | void ospf_apiserver_accept(struct thread *thread) |
2d33f157 | 573 | { |
d62a17ae | 574 | int accept_sock; |
575 | int new_sync_sock; | |
576 | int new_async_sock; | |
577 | union sockunion su; | |
578 | struct ospf_apiserver *apiserv; | |
579 | struct sockaddr_in peer_async; | |
580 | struct sockaddr_in peer_sync; | |
581 | unsigned int peerlen; | |
582 | int ret; | |
583 | ||
584 | /* THREAD_ARG (thread) is NULL */ | |
585 | accept_sock = THREAD_FD(thread); | |
586 | ||
587 | /* Keep hearing on socket for further connections. */ | |
588 | ospf_apiserver_event(OSPF_APISERVER_ACCEPT, accept_sock, NULL); | |
589 | ||
590 | memset(&su, 0, sizeof(union sockunion)); | |
591 | /* Accept connection for synchronous messages */ | |
592 | new_sync_sock = sockunion_accept(accept_sock, &su); | |
593 | if (new_sync_sock < 0) { | |
4adc415e | 594 | zlog_warn("%s: accept: %s", __func__, safe_strerror(errno)); |
cc9f21da | 595 | return; |
d62a17ae | 596 | } |
597 | ||
598 | /* Get port address and port number of peer to make reverse connection. | |
599 | The reverse channel uses the port number of the peer port+1. */ | |
600 | ||
6006b807 | 601 | memset(&peer_sync, 0, sizeof(peer_sync)); |
d62a17ae | 602 | peerlen = sizeof(struct sockaddr_in); |
603 | ||
604 | ret = getpeername(new_sync_sock, (struct sockaddr *)&peer_sync, | |
605 | &peerlen); | |
606 | if (ret < 0) { | |
4adc415e | 607 | zlog_warn("%s: getpeername: %s", __func__, |
d62a17ae | 608 | safe_strerror(errno)); |
609 | close(new_sync_sock); | |
cc9f21da | 610 | return; |
d62a17ae | 611 | } |
612 | ||
613 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 614 | zlog_debug("API: %s: New peer: %pI4/%u", __func__, |
615 | &peer_sync.sin_addr, ntohs(peer_sync.sin_port)); | |
d62a17ae | 616 | |
617 | /* Create new socket for asynchronous messages. */ | |
618 | peer_async = peer_sync; | |
619 | peer_async.sin_port = htons(ntohs(peer_sync.sin_port) + 1); | |
620 | ||
621 | /* Check if remote port number to make reverse connection is valid one. | |
622 | */ | |
623 | if (ntohs(peer_async.sin_port) == ospf_apiserver_getport()) { | |
4adc415e | 624 | zlog_warn("API: %s: Peer(%pI4/%u): Invalid async port number?", |
625 | __func__, &peer_async.sin_addr, | |
626 | ntohs(peer_async.sin_port)); | |
d62a17ae | 627 | close(new_sync_sock); |
cc9f21da | 628 | return; |
d62a17ae | 629 | } |
630 | ||
631 | new_async_sock = socket(AF_INET, SOCK_STREAM, 0); | |
632 | if (new_async_sock < 0) { | |
4adc415e | 633 | zlog_warn("%s: socket: %s", __func__, safe_strerror(errno)); |
d62a17ae | 634 | close(new_sync_sock); |
cc9f21da | 635 | return; |
d62a17ae | 636 | } |
637 | ||
638 | ret = connect(new_async_sock, (struct sockaddr *)&peer_async, | |
639 | sizeof(struct sockaddr_in)); | |
640 | ||
641 | if (ret < 0) { | |
4adc415e | 642 | zlog_warn("%s: connect: %s", __func__, safe_strerror(errno)); |
d62a17ae | 643 | close(new_sync_sock); |
644 | close(new_async_sock); | |
cc9f21da | 645 | return; |
d62a17ae | 646 | } |
2d33f157 | 647 | |
648 | #ifdef USE_ASYNC_READ | |
d62a17ae | 649 | #else /* USE_ASYNC_READ */ |
650 | /* Make the asynchronous channel write-only. */ | |
651 | ret = shutdown(new_async_sock, SHUT_RD); | |
652 | if (ret < 0) { | |
4adc415e | 653 | zlog_warn("%s: shutdown: %s", __func__, safe_strerror(errno)); |
d62a17ae | 654 | close(new_sync_sock); |
655 | close(new_async_sock); | |
cc9f21da | 656 | return; |
d62a17ae | 657 | } |
2d33f157 | 658 | #endif /* USE_ASYNC_READ */ |
659 | ||
d62a17ae | 660 | /* Allocate new server-side connection structure */ |
661 | apiserv = ospf_apiserver_new(new_sync_sock, new_async_sock); | |
2d33f157 | 662 | |
d62a17ae | 663 | /* Add to active connection list */ |
664 | listnode_add(apiserver_list, apiserv); | |
665 | apiserv->peer_sync = peer_sync; | |
666 | apiserv->peer_async = peer_async; | |
2d33f157 | 667 | |
d62a17ae | 668 | /* And add read threads for new connection */ |
669 | ospf_apiserver_event(OSPF_APISERVER_SYNC_READ, new_sync_sock, apiserv); | |
2d33f157 | 670 | #ifdef USE_ASYNC_READ |
d62a17ae | 671 | ospf_apiserver_event(OSPF_APISERVER_ASYNC_READ, new_async_sock, |
672 | apiserv); | |
2d33f157 | 673 | #endif /* USE_ASYNC_READ */ |
674 | ||
d62a17ae | 675 | if (IS_DEBUG_OSPF_EVENT) |
676 | zlog_debug("API: New apiserv(%p), total#(%d)", (void *)apiserv, | |
677 | apiserver_list->count); | |
2d33f157 | 678 | } |
679 | ||
680 | ||
681 | /* ----------------------------------------------------------- | |
682 | * Send reply with return code to client application | |
683 | * ----------------------------------------------------------- | |
684 | */ | |
685 | ||
d62a17ae | 686 | static int ospf_apiserver_send_msg(struct ospf_apiserver *apiserv, |
687 | struct msg *msg) | |
2d33f157 | 688 | { |
d62a17ae | 689 | struct msg_fifo *fifo; |
690 | struct msg *msg2; | |
14416b1f | 691 | enum ospf_apiserver_event event; |
d62a17ae | 692 | int fd; |
693 | ||
694 | switch (msg->hdr.msgtype) { | |
695 | case MSG_REPLY: | |
696 | fifo = apiserv->out_sync_fifo; | |
697 | fd = apiserv->fd_sync; | |
698 | event = OSPF_APISERVER_SYNC_WRITE; | |
699 | break; | |
700 | case MSG_READY_NOTIFY: | |
701 | case MSG_LSA_UPDATE_NOTIFY: | |
702 | case MSG_LSA_DELETE_NOTIFY: | |
703 | case MSG_NEW_IF: | |
704 | case MSG_DEL_IF: | |
705 | case MSG_ISM_CHANGE: | |
706 | case MSG_NSM_CHANGE: | |
149491af | 707 | case MSG_REACHABLE_CHANGE: |
44038c7a | 708 | case MSG_ROUTER_ID_CHANGE: |
d62a17ae | 709 | fifo = apiserv->out_async_fifo; |
710 | fd = apiserv->fd_async; | |
711 | event = OSPF_APISERVER_ASYNC_WRITE; | |
712 | break; | |
713 | default: | |
4adc415e | 714 | zlog_warn("%s: Unknown message type %d", __func__, |
d62a17ae | 715 | msg->hdr.msgtype); |
716 | return -1; | |
717 | } | |
718 | ||
719 | /* Make a copy of the message and put in the fifo. Once the fifo | |
720 | gets drained by the write thread, the message will be freed. */ | |
721 | /* NB: Given "msg" is untouched in this function. */ | |
722 | msg2 = msg_dup(msg); | |
723 | ||
724 | /* Enqueue message into corresponding fifo queue */ | |
725 | msg_fifo_push(fifo, msg2); | |
726 | ||
727 | /* Schedule write thread */ | |
728 | ospf_apiserver_event(event, fd, apiserv); | |
729 | return 0; | |
2d33f157 | 730 | } |
731 | ||
d7c0a89a QY |
732 | int ospf_apiserver_send_reply(struct ospf_apiserver *apiserv, uint32_t seqnr, |
733 | uint8_t rc) | |
2d33f157 | 734 | { |
d62a17ae | 735 | struct msg *msg = new_msg_reply(seqnr, rc); |
736 | int ret; | |
2d33f157 | 737 | |
d62a17ae | 738 | if (!msg) { |
4adc415e | 739 | zlog_warn("%s: msg_new failed", __func__); |
2d33f157 | 740 | #ifdef NOTYET |
d62a17ae | 741 | /* Cannot allocate new message. What should we do? */ |
742 | ospf_apiserver_free(apiserv); | |
2d33f157 | 743 | #endif |
d62a17ae | 744 | return -1; |
745 | } | |
2d33f157 | 746 | |
d62a17ae | 747 | ret = ospf_apiserver_send_msg(apiserv, msg); |
748 | msg_free(msg); | |
749 | return ret; | |
2d33f157 | 750 | } |
751 | ||
752 | ||
753 | /* ----------------------------------------------------------- | |
754 | * Generic message dispatching handler function | |
755 | * ----------------------------------------------------------- | |
756 | */ | |
757 | ||
d62a17ae | 758 | int ospf_apiserver_handle_msg(struct ospf_apiserver *apiserv, struct msg *msg) |
2d33f157 | 759 | { |
d62a17ae | 760 | int rc; |
761 | ||
762 | /* Call corresponding message handler function. */ | |
763 | switch (msg->hdr.msgtype) { | |
764 | case MSG_REGISTER_OPAQUETYPE: | |
765 | rc = ospf_apiserver_handle_register_opaque_type(apiserv, msg); | |
766 | break; | |
767 | case MSG_UNREGISTER_OPAQUETYPE: | |
768 | rc = ospf_apiserver_handle_unregister_opaque_type(apiserv, msg); | |
769 | break; | |
770 | case MSG_REGISTER_EVENT: | |
771 | rc = ospf_apiserver_handle_register_event(apiserv, msg); | |
772 | break; | |
773 | case MSG_SYNC_LSDB: | |
774 | rc = ospf_apiserver_handle_sync_lsdb(apiserv, msg); | |
775 | break; | |
776 | case MSG_ORIGINATE_REQUEST: | |
777 | rc = ospf_apiserver_handle_originate_request(apiserv, msg); | |
778 | break; | |
779 | case MSG_DELETE_REQUEST: | |
780 | rc = ospf_apiserver_handle_delete_request(apiserv, msg); | |
781 | break; | |
149491af CH |
782 | case MSG_SYNC_REACHABLE: |
783 | rc = ospf_apiserver_handle_sync_reachable(apiserv, msg); | |
784 | break; | |
97355a6d CH |
785 | case MSG_SYNC_ISM: |
786 | rc = ospf_apiserver_handle_sync_ism(apiserv, msg); | |
787 | break; | |
788 | case MSG_SYNC_NSM: | |
789 | rc = ospf_apiserver_handle_sync_nsm(apiserv, msg); | |
790 | break; | |
44038c7a CH |
791 | case MSG_SYNC_ROUTER_ID: |
792 | rc = ospf_apiserver_handle_sync_router_id(apiserv, msg); | |
793 | break; | |
d62a17ae | 794 | default: |
4adc415e | 795 | zlog_warn("%s: Unknown message type: %d", __func__, |
d62a17ae | 796 | msg->hdr.msgtype); |
797 | rc = -1; | |
798 | } | |
799 | return rc; | |
2d33f157 | 800 | } |
801 | ||
802 | ||
803 | /* ----------------------------------------------------------- | |
804 | * Following are functions for opaque type registration | |
805 | * ----------------------------------------------------------- | |
806 | */ | |
807 | ||
d62a17ae | 808 | int ospf_apiserver_register_opaque_type(struct ospf_apiserver *apiserv, |
d7c0a89a | 809 | uint8_t lsa_type, uint8_t opaque_type) |
2d33f157 | 810 | { |
d62a17ae | 811 | struct registered_opaque_type *regtype; |
812 | int (*originator_func)(void *arg); | |
813 | int rc; | |
814 | ||
815 | switch (lsa_type) { | |
816 | case OSPF_OPAQUE_LINK_LSA: | |
817 | originator_func = ospf_apiserver_lsa9_originator; | |
818 | break; | |
819 | case OSPF_OPAQUE_AREA_LSA: | |
820 | originator_func = ospf_apiserver_lsa10_originator; | |
821 | break; | |
822 | case OSPF_OPAQUE_AS_LSA: | |
823 | originator_func = ospf_apiserver_lsa11_originator; | |
824 | break; | |
825 | default: | |
4adc415e | 826 | zlog_warn("%s: lsa_type(%d)", __func__, lsa_type); |
d62a17ae | 827 | return OSPF_API_ILLEGALLSATYPE; |
828 | } | |
829 | ||
830 | ||
831 | /* Register opaque function table */ | |
832 | /* NB: Duplicated registration will be detected inside the function. */ | |
833 | rc = ospf_register_opaque_functab( | |
834 | lsa_type, opaque_type, NULL, /* ospf_apiserver_new_if */ | |
835 | NULL, /* ospf_apiserver_del_if */ | |
836 | NULL, /* ospf_apiserver_ism_change */ | |
837 | NULL, /* ospf_apiserver_nsm_change */ | |
838 | NULL, NULL, NULL, ospf_apiserver_show_info, originator_func, | |
839 | ospf_apiserver_lsa_refresher, | |
840 | NULL, /* ospf_apiserver_lsa_update */ | |
841 | NULL /* ospf_apiserver_lsa_delete */); | |
842 | ||
843 | if (rc != 0) { | |
cf444bcf | 844 | flog_warn(EC_OSPF_OPAQUE_REGISTRATION, |
85c9b439 | 845 | "Failed to register opaque type [%d/%d]", lsa_type, |
d62a17ae | 846 | opaque_type); |
847 | return OSPF_API_OPAQUETYPEINUSE; | |
848 | } | |
849 | ||
850 | /* Remember the opaque type that application registers so when | |
851 | connection shuts down, we can flush all LSAs of this opaque | |
852 | type. */ | |
853 | ||
29a1a53d DS |
854 | regtype = |
855 | XCALLOC(MTYPE_APISERVER, sizeof(struct registered_opaque_type)); | |
d62a17ae | 856 | regtype->lsa_type = lsa_type; |
857 | regtype->opaque_type = opaque_type; | |
858 | ||
859 | /* Add to list of registered opaque types */ | |
860 | listnode_add(apiserv->opaque_types, regtype); | |
861 | ||
862 | if (IS_DEBUG_OSPF_EVENT) | |
863 | zlog_debug( | |
3efd0893 | 864 | "API: Add LSA-type(%d)/Opaque-type(%d) into apiserv(%p), total#(%d)", |
d62a17ae | 865 | lsa_type, opaque_type, (void *)apiserv, |
866 | listcount(apiserv->opaque_types)); | |
867 | ||
868 | return 0; | |
2d33f157 | 869 | } |
870 | ||
d62a17ae | 871 | int ospf_apiserver_unregister_opaque_type(struct ospf_apiserver *apiserv, |
d7c0a89a | 872 | uint8_t lsa_type, uint8_t opaque_type) |
2d33f157 | 873 | { |
d62a17ae | 874 | struct listnode *node, *nnode; |
875 | struct registered_opaque_type *regtype; | |
2d33f157 | 876 | |
d62a17ae | 877 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node, nnode, regtype)) { |
878 | /* Check if we really registered this opaque type */ | |
879 | if (regtype->lsa_type == lsa_type | |
880 | && regtype->opaque_type == opaque_type) { | |
2d33f157 | 881 | |
d62a17ae | 882 | /* Yes, we registered this opaque type. Flush |
883 | all existing opaque LSAs of this type */ | |
2d33f157 | 884 | |
d62a17ae | 885 | ospf_apiserver_flush_opaque_lsa(apiserv, lsa_type, |
886 | opaque_type); | |
887 | ospf_delete_opaque_functab(lsa_type, opaque_type); | |
2d33f157 | 888 | |
d62a17ae | 889 | /* Remove from list of registered opaque types */ |
890 | listnode_delete(apiserv->opaque_types, regtype); | |
2d33f157 | 891 | |
d62a17ae | 892 | if (IS_DEBUG_OSPF_EVENT) |
893 | zlog_debug( | |
3efd0893 | 894 | "API: Del LSA-type(%d)/Opaque-type(%d) from apiserv(%p), total#(%d)", |
d62a17ae | 895 | lsa_type, opaque_type, (void *)apiserv, |
896 | listcount(apiserv->opaque_types)); | |
2d33f157 | 897 | |
d62a17ae | 898 | return 0; |
899 | } | |
2d33f157 | 900 | } |
2d33f157 | 901 | |
d62a17ae | 902 | /* Opaque type is not registered */ |
903 | zlog_warn("Failed to unregister opaque type [%d/%d]", lsa_type, | |
904 | opaque_type); | |
905 | return OSPF_API_OPAQUETYPENOTREGISTERED; | |
2d33f157 | 906 | } |
907 | ||
908 | ||
d62a17ae | 909 | static int apiserver_is_opaque_type_registered(struct ospf_apiserver *apiserv, |
d7c0a89a QY |
910 | uint8_t lsa_type, |
911 | uint8_t opaque_type) | |
2d33f157 | 912 | { |
d62a17ae | 913 | struct listnode *node, *nnode; |
914 | struct registered_opaque_type *regtype; | |
915 | ||
916 | /* XXX: how many types are there? if few, why not just a bitmap? */ | |
917 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node, nnode, regtype)) { | |
918 | /* Check if we really registered this opaque type */ | |
919 | if (regtype->lsa_type == lsa_type | |
920 | && regtype->opaque_type == opaque_type) { | |
921 | /* Yes registered */ | |
922 | return 1; | |
923 | } | |
924 | } | |
925 | /* Not registered */ | |
926 | return 0; | |
2d33f157 | 927 | } |
928 | ||
d62a17ae | 929 | int ospf_apiserver_handle_register_opaque_type(struct ospf_apiserver *apiserv, |
930 | struct msg *msg) | |
2d33f157 | 931 | { |
d62a17ae | 932 | struct msg_register_opaque_type *rmsg; |
d7c0a89a QY |
933 | uint8_t lsa_type; |
934 | uint8_t opaque_type; | |
d62a17ae | 935 | int rc = 0; |
936 | ||
937 | /* Extract parameters from register opaque type message */ | |
938 | rmsg = (struct msg_register_opaque_type *)STREAM_DATA(msg->s); | |
939 | ||
940 | lsa_type = rmsg->lsatype; | |
941 | opaque_type = rmsg->opaquetype; | |
942 | ||
943 | rc = ospf_apiserver_register_opaque_type(apiserv, lsa_type, | |
944 | opaque_type); | |
945 | ||
946 | /* Send a reply back to client including return code */ | |
947 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
948 | if (rc < 0) | |
949 | goto out; | |
950 | ||
951 | /* Now inform application about opaque types that are ready */ | |
952 | switch (lsa_type) { | |
953 | case OSPF_OPAQUE_LINK_LSA: | |
954 | ospf_apiserver_notify_ready_type9(apiserv); | |
955 | break; | |
956 | case OSPF_OPAQUE_AREA_LSA: | |
957 | ospf_apiserver_notify_ready_type10(apiserv); | |
958 | break; | |
959 | case OSPF_OPAQUE_AS_LSA: | |
960 | ospf_apiserver_notify_ready_type11(apiserv); | |
961 | break; | |
962 | } | |
2d33f157 | 963 | out: |
d62a17ae | 964 | return rc; |
2d33f157 | 965 | } |
966 | ||
967 | ||
968 | /* Notify specific client about all opaque types 9 that are ready. */ | |
d62a17ae | 969 | void ospf_apiserver_notify_ready_type9(struct ospf_apiserver *apiserv) |
2d33f157 | 970 | { |
d62a17ae | 971 | struct listnode *node, *nnode; |
972 | struct listnode *node2, *nnode2; | |
973 | struct ospf *ospf; | |
974 | struct ospf_interface *oi; | |
975 | struct registered_opaque_type *r; | |
976 | ||
b5a8894d | 977 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 978 | |
979 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) { | |
980 | /* Check if this interface is indeed ready for type 9 */ | |
981 | if (!ospf_apiserver_is_ready_type9(oi)) | |
982 | continue; | |
983 | ||
984 | /* Check for registered opaque type 9 types */ | |
985 | /* XXX: loop-de-loop - optimise me */ | |
986 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
987 | r)) { | |
988 | struct msg *msg; | |
989 | ||
990 | if (r->lsa_type == OSPF_OPAQUE_LINK_LSA) { | |
991 | ||
992 | /* Yes, this opaque type is ready */ | |
993 | msg = new_msg_ready_notify( | |
994 | 0, OSPF_OPAQUE_LINK_LSA, r->opaque_type, | |
995 | oi->address->u.prefix4); | |
996 | if (!msg) { | |
4adc415e | 997 | zlog_warn("%s: msg_new failed", |
998 | __func__); | |
2d33f157 | 999 | #ifdef NOTYET |
d62a17ae | 1000 | /* Cannot allocate new message. What |
1001 | * should we do? */ | |
1002 | ospf_apiserver_free(apiserv); | |
2d33f157 | 1003 | #endif |
d62a17ae | 1004 | goto out; |
1005 | } | |
1006 | ospf_apiserver_send_msg(apiserv, msg); | |
1007 | msg_free(msg); | |
1008 | } | |
2d33f157 | 1009 | } |
2d33f157 | 1010 | } |
2d33f157 | 1011 | |
1012 | out: | |
d62a17ae | 1013 | return; |
2d33f157 | 1014 | } |
1015 | ||
1016 | ||
1017 | /* Notify specific client about all opaque types 10 that are ready. */ | |
d62a17ae | 1018 | void ospf_apiserver_notify_ready_type10(struct ospf_apiserver *apiserv) |
2d33f157 | 1019 | { |
d62a17ae | 1020 | struct listnode *node, *nnode; |
1021 | struct listnode *node2, *nnode2; | |
1022 | struct ospf *ospf; | |
1023 | struct ospf_area *area; | |
1024 | ||
b5a8894d | 1025 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1026 | |
1027 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) { | |
1028 | struct registered_opaque_type *r; | |
1029 | ||
1030 | if (!ospf_apiserver_is_ready_type10(area)) { | |
1031 | continue; | |
1032 | } | |
1033 | ||
1034 | /* Check for registered opaque type 10 types */ | |
1035 | /* XXX: loop in loop - optimise me */ | |
1036 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
1037 | r)) { | |
1038 | struct msg *msg; | |
1039 | ||
1040 | if (r->lsa_type == OSPF_OPAQUE_AREA_LSA) { | |
1041 | /* Yes, this opaque type is ready */ | |
1042 | msg = new_msg_ready_notify( | |
1043 | 0, OSPF_OPAQUE_AREA_LSA, r->opaque_type, | |
1044 | area->area_id); | |
1045 | if (!msg) { | |
4adc415e | 1046 | zlog_warn("%s: msg_new failed", |
1047 | __func__); | |
2d33f157 | 1048 | #ifdef NOTYET |
d62a17ae | 1049 | /* Cannot allocate new message. What |
1050 | * should we do? */ | |
1051 | ospf_apiserver_free(apiserv); | |
2d33f157 | 1052 | #endif |
d62a17ae | 1053 | goto out; |
1054 | } | |
1055 | ospf_apiserver_send_msg(apiserv, msg); | |
1056 | msg_free(msg); | |
1057 | } | |
2d33f157 | 1058 | } |
2d33f157 | 1059 | } |
2d33f157 | 1060 | |
1061 | out: | |
d62a17ae | 1062 | return; |
2d33f157 | 1063 | } |
1064 | ||
1065 | /* Notify specific client about all opaque types 11 that are ready */ | |
d62a17ae | 1066 | void ospf_apiserver_notify_ready_type11(struct ospf_apiserver *apiserv) |
2d33f157 | 1067 | { |
d62a17ae | 1068 | struct listnode *node, *nnode; |
1069 | struct ospf *ospf; | |
1070 | struct registered_opaque_type *r; | |
1071 | ||
b5a8894d | 1072 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1073 | |
1074 | /* Can type 11 be originated? */ | |
1075 | if (!ospf_apiserver_is_ready_type11(ospf)) | |
1076 | goto out; | |
1077 | ||
1078 | /* Check for registered opaque type 11 types */ | |
1079 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node, nnode, r)) { | |
1080 | struct msg *msg; | |
1081 | struct in_addr noarea_id = {.s_addr = 0L}; | |
1082 | ||
1083 | if (r->lsa_type == OSPF_OPAQUE_AS_LSA) { | |
1084 | /* Yes, this opaque type is ready */ | |
1085 | msg = new_msg_ready_notify(0, OSPF_OPAQUE_AS_LSA, | |
1086 | r->opaque_type, noarea_id); | |
1087 | ||
1088 | if (!msg) { | |
4adc415e | 1089 | zlog_warn("%s: msg_new failed", __func__); |
2d33f157 | 1090 | #ifdef NOTYET |
d62a17ae | 1091 | /* Cannot allocate new message. What should we |
1092 | * do? */ | |
1093 | ospf_apiserver_free(apiserv); | |
2d33f157 | 1094 | #endif |
d62a17ae | 1095 | goto out; |
1096 | } | |
1097 | ospf_apiserver_send_msg(apiserv, msg); | |
1098 | msg_free(msg); | |
1099 | } | |
2d33f157 | 1100 | } |
2d33f157 | 1101 | |
1102 | out: | |
d62a17ae | 1103 | return; |
2d33f157 | 1104 | } |
1105 | ||
d62a17ae | 1106 | int ospf_apiserver_handle_unregister_opaque_type(struct ospf_apiserver *apiserv, |
1107 | struct msg *msg) | |
2d33f157 | 1108 | { |
d62a17ae | 1109 | struct msg_unregister_opaque_type *umsg; |
d7c0a89a QY |
1110 | uint8_t ltype; |
1111 | uint8_t otype; | |
d62a17ae | 1112 | int rc = 0; |
2d33f157 | 1113 | |
d62a17ae | 1114 | /* Extract parameters from unregister opaque type message */ |
1115 | umsg = (struct msg_unregister_opaque_type *)STREAM_DATA(msg->s); | |
2d33f157 | 1116 | |
d62a17ae | 1117 | ltype = umsg->lsatype; |
1118 | otype = umsg->opaquetype; | |
2d33f157 | 1119 | |
d62a17ae | 1120 | rc = ospf_apiserver_unregister_opaque_type(apiserv, ltype, otype); |
2d33f157 | 1121 | |
d62a17ae | 1122 | /* Send a reply back to client including return code */ |
1123 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
2d33f157 | 1124 | |
d62a17ae | 1125 | return rc; |
2d33f157 | 1126 | } |
1127 | ||
1128 | ||
1129 | /* ----------------------------------------------------------- | |
1130 | * Following are functions for event (filter) registration. | |
1131 | * ----------------------------------------------------------- | |
1132 | */ | |
d62a17ae | 1133 | int ospf_apiserver_handle_register_event(struct ospf_apiserver *apiserv, |
1134 | struct msg *msg) | |
2d33f157 | 1135 | { |
d62a17ae | 1136 | struct msg_register_event *rmsg; |
1137 | int rc; | |
d7c0a89a | 1138 | uint32_t seqnum; |
8db278b5 | 1139 | size_t size; |
d62a17ae | 1140 | |
1141 | rmsg = (struct msg_register_event *)STREAM_DATA(msg->s); | |
1142 | ||
1143 | /* Get request sequence number */ | |
1144 | seqnum = msg_get_seq(msg); | |
1145 | ||
1146 | /* Free existing filter in apiserv. */ | |
29a1a53d | 1147 | XFREE(MTYPE_APISERVER_MSGFILTER, apiserv->filter); |
d62a17ae | 1148 | /* Alloc new space for filter. */ |
8db278b5 OD |
1149 | size = ntohs(msg->hdr.msglen); |
1150 | if (size < OSPF_MAX_LSA_SIZE) { | |
d62a17ae | 1151 | |
29a1a53d | 1152 | apiserv->filter = XMALLOC(MTYPE_APISERVER_MSGFILTER, size); |
0ce1ca80 | 1153 | |
8db278b5 OD |
1154 | /* copy it over. */ |
1155 | memcpy(apiserv->filter, &rmsg->filter, size); | |
1156 | rc = OSPF_API_OK; | |
1157 | } else | |
1158 | rc = OSPF_API_NOMEMORY; | |
0ce1ca80 | 1159 | |
d62a17ae | 1160 | /* Send a reply back to client with return code */ |
1161 | rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1162 | return rc; | |
2d33f157 | 1163 | } |
1164 | ||
1165 | ||
1166 | /* ----------------------------------------------------------- | |
78dfa0c7 | 1167 | * Following are functions for LSDB synchronization. |
2d33f157 | 1168 | * ----------------------------------------------------------- |
1169 | */ | |
1170 | ||
d62a17ae | 1171 | static int apiserver_sync_callback(struct ospf_lsa *lsa, void *p_arg, |
1172 | int int_arg) | |
2d33f157 | 1173 | { |
d62a17ae | 1174 | struct ospf_apiserver *apiserv; |
1175 | int seqnum; | |
1176 | struct msg *msg; | |
1177 | struct param_t { | |
1178 | struct ospf_apiserver *apiserv; | |
1179 | struct lsa_filter_type *filter; | |
1180 | } * param; | |
1181 | int rc = -1; | |
1182 | ||
1183 | /* Sanity check */ | |
1184 | assert(lsa->data); | |
1185 | assert(p_arg); | |
1186 | ||
1187 | param = (struct param_t *)p_arg; | |
1188 | apiserv = param->apiserv; | |
d7c0a89a | 1189 | seqnum = (uint32_t)int_arg; |
d62a17ae | 1190 | |
1191 | /* Check origin in filter. */ | |
1192 | if ((param->filter->origin == ANY_ORIGIN) | |
1193 | || (param->filter->origin == (lsa->flags & OSPF_LSA_SELF))) { | |
1194 | ||
1195 | /* Default area for AS-External and Opaque11 LSAs */ | |
1196 | struct in_addr area_id = {.s_addr = 0L}; | |
1197 | ||
1198 | /* Default interface for non Opaque9 LSAs */ | |
1199 | struct in_addr ifaddr = {.s_addr = 0L}; | |
1200 | ||
1201 | if (lsa->area) { | |
1202 | area_id = lsa->area->area_id; | |
1203 | } | |
1204 | if (lsa->data->type == OSPF_OPAQUE_LINK_LSA) { | |
1205 | ifaddr = lsa->oi->address->u.prefix4; | |
1206 | } | |
1207 | ||
1208 | msg = new_msg_lsa_change_notify( | |
1209 | MSG_LSA_UPDATE_NOTIFY, seqnum, ifaddr, area_id, | |
1210 | lsa->flags & OSPF_LSA_SELF, lsa->data); | |
1211 | if (!msg) { | |
4adc415e | 1212 | zlog_warn("%s: new_msg_update failed", __func__); |
2d33f157 | 1213 | #ifdef NOTYET |
9d303b37 DL |
1214 | /* Cannot allocate new message. What should we do? */ |
1215 | /* ospf_apiserver_free (apiserv);*/ /* Do nothing | |
1216 | here XXX | |
1217 | */ | |
2d33f157 | 1218 | #endif |
d62a17ae | 1219 | goto out; |
1220 | } | |
2d33f157 | 1221 | |
d62a17ae | 1222 | /* Send LSA */ |
1223 | ospf_apiserver_send_msg(apiserv, msg); | |
1224 | msg_free(msg); | |
1225 | } | |
1226 | rc = 0; | |
2d33f157 | 1227 | |
1228 | out: | |
d62a17ae | 1229 | return rc; |
2d33f157 | 1230 | } |
1231 | ||
d62a17ae | 1232 | int ospf_apiserver_handle_sync_lsdb(struct ospf_apiserver *apiserv, |
1233 | struct msg *msg) | |
2d33f157 | 1234 | { |
d62a17ae | 1235 | struct listnode *node, *nnode; |
d7c0a89a | 1236 | uint32_t seqnum; |
d62a17ae | 1237 | int rc = 0; |
1238 | struct msg_sync_lsdb *smsg; | |
1239 | struct ospf_apiserver_param_t { | |
1240 | struct ospf_apiserver *apiserv; | |
1241 | struct lsa_filter_type *filter; | |
1242 | } param; | |
d7c0a89a | 1243 | uint16_t mask; |
d62a17ae | 1244 | struct route_node *rn; |
1245 | struct ospf_lsa *lsa; | |
1246 | struct ospf *ospf; | |
1247 | struct ospf_area *area; | |
1248 | ||
b5a8894d | 1249 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1250 | |
1251 | /* Get request sequence number */ | |
1252 | seqnum = msg_get_seq(msg); | |
1253 | /* Set sync msg. */ | |
1254 | smsg = (struct msg_sync_lsdb *)STREAM_DATA(msg->s); | |
1255 | ||
1256 | /* Set parameter struct. */ | |
1257 | param.apiserv = apiserv; | |
1258 | param.filter = &smsg->filter; | |
1259 | ||
1260 | /* Remember mask. */ | |
1261 | mask = ntohs(smsg->filter.typemask); | |
1262 | ||
1263 | /* Iterate over all areas. */ | |
1264 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) { | |
1265 | int i; | |
d7c0a89a | 1266 | uint32_t *area_id = NULL; |
d62a17ae | 1267 | |
1268 | /* Compare area_id with area_ids in sync request. */ | |
1269 | if ((i = smsg->filter.num_areas) > 0) { | |
1270 | /* Let area_id point to the list of area IDs, | |
1271 | * which is at the end of smsg->filter. */ | |
d7c0a89a | 1272 | area_id = (uint32_t *)(&smsg->filter + 1); |
d62a17ae | 1273 | while (i) { |
1274 | if (*area_id == area->area_id.s_addr) { | |
1275 | break; | |
1276 | } | |
1277 | i--; | |
1278 | area_id++; | |
1279 | } | |
1280 | } else { | |
1281 | i = 1; | |
1282 | } | |
1283 | ||
1284 | /* If area was found, then i>0 here. */ | |
1285 | if (i) { | |
1286 | /* Check msg type. */ | |
1287 | if (mask & Power2[OSPF_ROUTER_LSA]) | |
996c9314 | 1288 | LSDB_LOOP (ROUTER_LSDB(area), rn, lsa) |
044506e7 DS |
1289 | apiserver_sync_callback( |
1290 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1291 | if (mask & Power2[OSPF_NETWORK_LSA]) |
996c9314 | 1292 | LSDB_LOOP (NETWORK_LSDB(area), rn, lsa) |
044506e7 DS |
1293 | apiserver_sync_callback( |
1294 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1295 | if (mask & Power2[OSPF_SUMMARY_LSA]) |
996c9314 | 1296 | LSDB_LOOP (SUMMARY_LSDB(area), rn, lsa) |
044506e7 DS |
1297 | apiserver_sync_callback( |
1298 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1299 | if (mask & Power2[OSPF_ASBR_SUMMARY_LSA]) |
996c9314 | 1300 | LSDB_LOOP (ASBR_SUMMARY_LSDB(area), rn, lsa) |
044506e7 DS |
1301 | apiserver_sync_callback( |
1302 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1303 | if (mask & Power2[OSPF_OPAQUE_LINK_LSA]) |
996c9314 | 1304 | LSDB_LOOP (OPAQUE_LINK_LSDB(area), rn, lsa) |
044506e7 DS |
1305 | apiserver_sync_callback( |
1306 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1307 | if (mask & Power2[OSPF_OPAQUE_AREA_LSA]) |
996c9314 | 1308 | LSDB_LOOP (OPAQUE_AREA_LSDB(area), rn, lsa) |
044506e7 DS |
1309 | apiserver_sync_callback( |
1310 | lsa, (void *)¶m, seqnum); | |
2d33f157 | 1311 | } |
d62a17ae | 1312 | } |
1313 | ||
1314 | /* For AS-external LSAs */ | |
1315 | if (ospf->lsdb) { | |
1316 | if (mask & Power2[OSPF_AS_EXTERNAL_LSA]) | |
996c9314 | 1317 | LSDB_LOOP (EXTERNAL_LSDB(ospf), rn, lsa) |
044506e7 DS |
1318 | apiserver_sync_callback(lsa, (void *)¶m, |
1319 | seqnum); | |
d62a17ae | 1320 | } |
1321 | ||
1322 | /* For AS-external opaque LSAs */ | |
1323 | if (ospf->lsdb) { | |
1324 | if (mask & Power2[OSPF_OPAQUE_AS_LSA]) | |
996c9314 | 1325 | LSDB_LOOP (OPAQUE_AS_LSDB(ospf), rn, lsa) |
044506e7 DS |
1326 | apiserver_sync_callback(lsa, (void *)¶m, |
1327 | seqnum); | |
d62a17ae | 1328 | } |
1329 | ||
1330 | /* Send a reply back to client with return code */ | |
1331 | rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1332 | return rc; | |
2d33f157 | 1333 | } |
1334 | ||
97355a6d CH |
1335 | /* |
1336 | * ----------------------------------------------------------- | |
1337 | * Followings are functions for synchronization. | |
149491af CH |
1338 | * ----------------------------------------------------------- |
1339 | */ | |
1340 | ||
1341 | int ospf_apiserver_handle_sync_reachable(struct ospf_apiserver *apiserv, | |
1342 | struct msg *msg) | |
1343 | { | |
1344 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1345 | struct route_table *rt = ospf->all_rtrs; | |
1346 | uint32_t seqnum = msg_get_seq(msg); | |
1347 | struct in_addr *a, *abuf; | |
1348 | struct msg_reachable_change *areach; | |
1349 | struct msg *amsg; | |
1350 | uint mcount, count; | |
1351 | int _rc, rc = 0; | |
1352 | ||
1353 | if (!rt) | |
1354 | goto out; | |
1355 | ||
1356 | /* send all adds based on current reachable routers */ | |
29a1a53d | 1357 | a = abuf = XCALLOC(MTYPE_APISERVER, sizeof(struct in_addr) * rt->count); |
149491af CH |
1358 | for (struct route_node *rn = route_top(rt); rn; rn = route_next(rn)) |
1359 | if (listhead((struct list *)rn->info)) | |
1360 | *a++ = rn->p.u.prefix4; | |
1361 | ||
1362 | assert((a - abuf) <= (long)rt->count); | |
1363 | count = (a - abuf); | |
1364 | ||
1365 | a = abuf; | |
1366 | while (count && !rc) { | |
1367 | amsg = new_msg_reachable_change(seqnum, count, a, 0, NULL); | |
1368 | areach = (struct msg_reachable_change *)STREAM_DATA(amsg->s); | |
1369 | mcount = ntohs(areach->nadd) + ntohs(areach->nremove); | |
1370 | assert(mcount <= count); | |
1371 | a = a + mcount; | |
1372 | count -= mcount; | |
1373 | rc = ospf_apiserver_send_msg(apiserv, amsg); | |
1374 | msg_free(amsg); | |
1375 | } | |
29a1a53d | 1376 | XFREE(MTYPE_APISERVER, abuf); |
149491af CH |
1377 | |
1378 | out: | |
149491af CH |
1379 | /* Send a reply back to client with return code */ |
1380 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
149491af CH |
1381 | rc = rc ? rc : _rc; |
1382 | apiserv->reachable_sync = !rc; | |
1383 | return rc; | |
1384 | } | |
1385 | ||
97355a6d CH |
1386 | int ospf_apiserver_handle_sync_ism(struct ospf_apiserver *apiserv, |
1387 | struct msg *msg) | |
1388 | { | |
1389 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1390 | struct listnode *anode, *inode; | |
1391 | struct ospf_area *area; | |
1392 | struct ospf_interface *oi; | |
1393 | struct msg *m; | |
1394 | uint32_t seqnum = msg_get_seq(msg); | |
1395 | int _rc, rc = 0; | |
1396 | ||
1397 | /* walk all areas */ | |
1398 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, anode, area)) { | |
1399 | /* walk all interfaces */ | |
1400 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, inode, oi)) { | |
1401 | m = new_msg_ism_change(seqnum, oi->address->u.prefix4, | |
1402 | area->area_id, oi->state); | |
1403 | rc = ospf_apiserver_send_msg(apiserv, m); | |
1404 | msg_free(m); | |
1405 | if (rc) | |
1406 | break; | |
1407 | } | |
1408 | if (rc) | |
1409 | break; | |
1410 | } | |
1411 | /* Send a reply back to client with return code */ | |
1412 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1413 | return rc ? rc : _rc; | |
1414 | } | |
1415 | ||
1416 | ||
1417 | int ospf_apiserver_handle_sync_nsm(struct ospf_apiserver *apiserv, | |
1418 | struct msg *msg) | |
1419 | { | |
1420 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1421 | struct listnode *anode, *inode; | |
1422 | struct ospf_area *area; | |
1423 | struct ospf_interface *oi; | |
1424 | struct ospf_neighbor *nbr; | |
1425 | struct route_node *rn; | |
1426 | struct msg *m; | |
1427 | uint32_t seqnum = msg_get_seq(msg); | |
1428 | int _rc, rc = 0; | |
1429 | ||
1430 | /* walk all areas */ | |
1431 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, anode, area)) { | |
1432 | /* walk all interfaces */ | |
1433 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, inode, oi)) { | |
1434 | /* walk all neighbors */ | |
1435 | for (rn = route_top(oi->nbrs); rn; | |
1436 | rn = route_next(rn)) { | |
1437 | nbr = rn->info; | |
1438 | if (!nbr) | |
1439 | continue; | |
1440 | m = new_msg_nsm_change( | |
1441 | seqnum, oi->address->u.prefix4, | |
1442 | nbr->src, nbr->router_id, nbr->state); | |
1443 | rc = ospf_apiserver_send_msg(apiserv, m); | |
1444 | msg_free(m); | |
1445 | if (rc) | |
1446 | break; | |
1447 | } | |
1448 | if (rc) | |
1449 | break; | |
1450 | } | |
1451 | if (rc) | |
1452 | break; | |
1453 | } | |
1454 | /* Send a reply back to client with return code */ | |
1455 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1456 | return rc ? rc : _rc; | |
1457 | } | |
1458 | ||
2d33f157 | 1459 | |
44038c7a CH |
1460 | int ospf_apiserver_handle_sync_router_id(struct ospf_apiserver *apiserv, |
1461 | struct msg *msg) | |
1462 | { | |
1463 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1464 | uint32_t seqnum = msg_get_seq(msg); | |
1465 | struct msg *m; | |
1466 | int _rc, rc = 0; | |
1467 | ||
1468 | m = new_msg_router_id_change(seqnum, ospf->router_id); | |
1469 | rc = ospf_apiserver_send_msg(apiserv, m); | |
1470 | msg_free(m); | |
1471 | ||
1472 | /* Send a reply back to client with return code */ | |
1473 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1474 | return rc ? rc : _rc; | |
1475 | } | |
1476 | ||
2d33f157 | 1477 | /* ----------------------------------------------------------- |
78dfa0c7 | 1478 | * Following are functions to originate or update LSA |
2d33f157 | 1479 | * from an application. |
1480 | * ----------------------------------------------------------- | |
1481 | */ | |
1482 | ||
1483 | /* Create a new internal opaque LSA by taking prototype and filling in | |
1484 | missing fields such as age, sequence number, advertising router, | |
1485 | checksum and so on. The interface parameter is used for type 9 | |
1486 | LSAs, area parameter for type 10. Type 11 LSAs do neither need area | |
1487 | nor interface. */ | |
1488 | ||
d62a17ae | 1489 | struct ospf_lsa *ospf_apiserver_opaque_lsa_new(struct ospf_area *area, |
1490 | struct ospf_interface *oi, | |
1491 | struct lsa_header *protolsa) | |
2d33f157 | 1492 | { |
d62a17ae | 1493 | struct stream *s; |
1494 | struct lsa_header *newlsa; | |
1495 | struct ospf_lsa *new = NULL; | |
d7c0a89a QY |
1496 | uint8_t options = 0x0; |
1497 | uint16_t length; | |
d62a17ae | 1498 | |
1499 | struct ospf *ospf; | |
1500 | ||
c0f3f7cd | 1501 | if (oi && oi->ospf) |
0d31e63e CS |
1502 | ospf = oi->ospf; |
1503 | else | |
1504 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1505 | ||
d62a17ae | 1506 | assert(ospf); |
1507 | ||
1508 | /* Create a stream for internal opaque LSA */ | |
1509 | if ((s = stream_new(OSPF_MAX_LSA_SIZE)) == NULL) { | |
4adc415e | 1510 | zlog_warn("%s: stream_new failed", __func__); |
d62a17ae | 1511 | return NULL; |
1512 | } | |
1513 | ||
1514 | newlsa = (struct lsa_header *)STREAM_DATA(s); | |
1515 | ||
1516 | /* XXX If this is a link-local LSA or an AS-external LSA, how do we | |
1517 | have to set options? */ | |
1518 | ||
1519 | if (area) { | |
1520 | options = LSA_OPTIONS_GET(area); | |
1521 | options |= LSA_OPTIONS_NSSA_GET(area); | |
1522 | } | |
1523 | ||
1524 | options |= OSPF_OPTION_O; /* Don't forget to set option bit */ | |
1525 | ||
1526 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) { | |
96b663a3 MS |
1527 | zlog_debug("LSA[Type%d:%pI4]: Creating an Opaque-LSA instance", |
1528 | protolsa->type, &protolsa->id); | |
d62a17ae | 1529 | } |
1530 | ||
1531 | /* Set opaque-LSA header fields. */ | |
1532 | lsa_header_set(s, options, protolsa->type, protolsa->id, | |
1533 | ospf->router_id); | |
1534 | ||
1535 | /* Set opaque-LSA body fields. */ | |
d7c0a89a | 1536 | stream_put(s, ((uint8_t *)protolsa) + sizeof(struct lsa_header), |
d62a17ae | 1537 | ntohs(protolsa->length) - sizeof(struct lsa_header)); |
1538 | ||
1539 | /* Determine length of LSA. */ | |
1540 | length = stream_get_endp(s); | |
1541 | newlsa->length = htons(length); | |
1542 | ||
1543 | /* Create OSPF LSA. */ | |
5b3d4186 | 1544 | new = ospf_lsa_new_and_data(length); |
d62a17ae | 1545 | |
1546 | new->area = area; | |
1547 | new->oi = oi; | |
0d31e63e | 1548 | new->vrf_id = ospf->vrf_id; |
d62a17ae | 1549 | |
1550 | SET_FLAG(new->flags, OSPF_LSA_SELF); | |
1551 | memcpy(new->data, newlsa, length); | |
1552 | stream_free(s); | |
1553 | ||
1554 | return new; | |
2d33f157 | 1555 | } |
1556 | ||
1557 | ||
d62a17ae | 1558 | int ospf_apiserver_is_ready_type9(struct ospf_interface *oi) |
2d33f157 | 1559 | { |
bd1188f9 CH |
1560 | /* We can always handle getting opaque's even if we can't flood them */ |
1561 | return 1; | |
2d33f157 | 1562 | } |
1563 | ||
d62a17ae | 1564 | int ospf_apiserver_is_ready_type10(struct ospf_area *area) |
2d33f157 | 1565 | { |
bd1188f9 CH |
1566 | /* We can always handle getting opaque's even if we can't flood them */ |
1567 | return 1; | |
2d33f157 | 1568 | } |
1569 | ||
d62a17ae | 1570 | int ospf_apiserver_is_ready_type11(struct ospf *ospf) |
2d33f157 | 1571 | { |
bd1188f9 CH |
1572 | /* We can always handle getting opaque's even if we can't flood them */ |
1573 | return 1; | |
2d33f157 | 1574 | } |
1575 | ||
1576 | ||
d62a17ae | 1577 | int ospf_apiserver_handle_originate_request(struct ospf_apiserver *apiserv, |
1578 | struct msg *msg) | |
2d33f157 | 1579 | { |
d62a17ae | 1580 | struct msg_originate_request *omsg; |
1581 | struct lsa_header *data; | |
1582 | struct ospf_lsa *new; | |
1583 | struct ospf_lsa *old; | |
1584 | struct ospf_area *area = NULL; | |
1585 | struct ospf_interface *oi = NULL; | |
1586 | struct ospf_lsdb *lsdb = NULL; | |
1587 | struct ospf *ospf; | |
1588 | int lsa_type, opaque_type; | |
1589 | int ready = 0; | |
1590 | int rc = 0; | |
1591 | ||
b5a8894d | 1592 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1593 | |
1594 | /* Extract opaque LSA data from message */ | |
1595 | omsg = (struct msg_originate_request *)STREAM_DATA(msg->s); | |
1596 | data = &omsg->data; | |
1597 | ||
1598 | /* Determine interface for type9 or area for type10 LSAs. */ | |
1599 | switch (data->type) { | |
1600 | case OSPF_OPAQUE_LINK_LSA: | |
1601 | oi = ospf_apiserver_if_lookup_by_addr(omsg->ifaddr); | |
1602 | if (!oi) { | |
4adc415e | 1603 | zlog_warn("%s: unknown interface %pI4", __func__, |
96b663a3 | 1604 | &omsg->ifaddr); |
d62a17ae | 1605 | rc = OSPF_API_NOSUCHINTERFACE; |
1606 | goto out; | |
1607 | } | |
1608 | area = oi->area; | |
1609 | lsdb = area->lsdb; | |
1610 | break; | |
1611 | case OSPF_OPAQUE_AREA_LSA: | |
1612 | area = ospf_area_lookup_by_area_id(ospf, omsg->area_id); | |
1613 | if (!area) { | |
4adc415e | 1614 | zlog_warn("%s: unknown area %pI4", __func__, |
96b663a3 | 1615 | &omsg->area_id); |
d62a17ae | 1616 | rc = OSPF_API_NOSUCHAREA; |
1617 | goto out; | |
1618 | } | |
1619 | lsdb = area->lsdb; | |
1620 | break; | |
1621 | case OSPF_OPAQUE_AS_LSA: | |
1622 | lsdb = ospf->lsdb; | |
1623 | break; | |
1624 | default: | |
1625 | /* We can only handle opaque types here */ | |
4adc415e | 1626 | zlog_warn("%s: Cannot originate non-opaque LSA type %d", |
1627 | __func__, data->type); | |
d62a17ae | 1628 | rc = OSPF_API_ILLEGALLSATYPE; |
1629 | goto out; | |
1630 | } | |
1631 | ||
1632 | /* Check if we registered this opaque type */ | |
1633 | lsa_type = data->type; | |
1634 | opaque_type = GET_OPAQUE_TYPE(ntohl(data->id.s_addr)); | |
1635 | ||
1636 | if (!apiserver_is_opaque_type_registered(apiserv, lsa_type, | |
1637 | opaque_type)) { | |
4adc415e | 1638 | zlog_warn("%s: LSA-type(%d)/Opaque-type(%d): Not registered", |
1639 | __func__, lsa_type, opaque_type); | |
d62a17ae | 1640 | rc = OSPF_API_OPAQUETYPENOTREGISTERED; |
1641 | goto out; | |
1642 | } | |
1643 | ||
1644 | /* Make sure that the neighbors are ready before we can originate */ | |
1645 | switch (data->type) { | |
1646 | case OSPF_OPAQUE_LINK_LSA: | |
1647 | ready = ospf_apiserver_is_ready_type9(oi); | |
1648 | break; | |
1649 | case OSPF_OPAQUE_AREA_LSA: | |
1650 | ready = ospf_apiserver_is_ready_type10(area); | |
1651 | break; | |
1652 | case OSPF_OPAQUE_AS_LSA: | |
1653 | ready = ospf_apiserver_is_ready_type11(ospf); | |
1654 | break; | |
1655 | default: | |
1656 | break; | |
1657 | } | |
1658 | ||
1659 | if (!ready) { | |
1660 | zlog_warn("Neighbors not ready to originate type %d", | |
1661 | data->type); | |
1662 | rc = OSPF_API_NOTREADY; | |
1663 | goto out; | |
1664 | } | |
1665 | ||
1666 | /* Create OSPF's internal opaque LSA representation */ | |
1667 | new = ospf_apiserver_opaque_lsa_new(area, oi, data); | |
1668 | if (!new) { | |
1669 | rc = OSPF_API_NOMEMORY; /* XXX */ | |
1670 | goto out; | |
1671 | } | |
1672 | ||
1673 | /* Determine if LSA is new or an update for an existing one. */ | |
1674 | old = ospf_lsdb_lookup(lsdb, new); | |
1675 | ||
5349121b | 1676 | if (!old || !ospf_opaque_is_owned(old)) { |
d62a17ae | 1677 | /* New LSA install in LSDB. */ |
5349121b | 1678 | rc = ospf_apiserver_originate1(new, old); |
d62a17ae | 1679 | } else { |
1680 | /* | |
1681 | * Keep the new LSA instance in the "waiting place" until the | |
1682 | * next | |
1683 | * refresh timing. If several LSA update requests for the same | |
1684 | * LSID | |
1685 | * have issued by peer, the last one takes effect. | |
1686 | */ | |
1687 | new->lsdb = &apiserv->reserve; | |
1688 | ospf_lsdb_add(&apiserv->reserve, new); | |
1689 | ||
1690 | /* Kick the scheduler function. */ | |
1691 | ospf_opaque_lsa_refresh_schedule(old); | |
1692 | } | |
2d33f157 | 1693 | |
1694 | out: | |
1695 | ||
d62a17ae | 1696 | /* Send a reply back to client with return code */ |
1697 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
1698 | return rc; | |
2d33f157 | 1699 | } |
1700 | ||
1701 | ||
1702 | /* ----------------------------------------------------------- | |
d62a17ae | 1703 | * Flood an LSA within its flooding scope. |
2d33f157 | 1704 | * ----------------------------------------------------------- |
1705 | */ | |
1706 | ||
1707 | /* XXX We can probably use ospf_flood_through instead of this function | |
d62a17ae | 1708 | but then we need the neighbor parameter. If we set nbr to |
2d33f157 | 1709 | NULL then ospf_flood_through crashes due to dereferencing NULL. */ |
1710 | ||
d62a17ae | 1711 | void ospf_apiserver_flood_opaque_lsa(struct ospf_lsa *lsa) |
2d33f157 | 1712 | { |
d62a17ae | 1713 | assert(lsa); |
1714 | ||
1715 | switch (lsa->data->type) { | |
1716 | case OSPF_OPAQUE_LINK_LSA: | |
1717 | /* Increment counters? XXX */ | |
1718 | ||
1719 | /* Flood LSA through local network. */ | |
1720 | ospf_flood_through_area(lsa->area, NULL /*nbr */, lsa); | |
1721 | break; | |
1722 | case OSPF_OPAQUE_AREA_LSA: | |
1723 | /* Update LSA origination count. */ | |
1724 | assert(lsa->area); | |
1725 | lsa->area->ospf->lsa_originate_count++; | |
1726 | ||
1727 | /* Flood LSA through area. */ | |
1728 | ospf_flood_through_area(lsa->area, NULL /*nbr */, lsa); | |
1729 | break; | |
1730 | case OSPF_OPAQUE_AS_LSA: { | |
1731 | struct ospf *ospf; | |
1732 | ||
b5a8894d | 1733 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1734 | assert(ospf); |
1735 | ||
1736 | /* Increment counters? XXX */ | |
1737 | ||
1738 | /* Flood LSA through AS. */ | |
1739 | ospf_flood_through_as(ospf, NULL /*nbr */, lsa); | |
1740 | break; | |
1741 | } | |
1742 | } | |
2d33f157 | 1743 | } |
1744 | ||
5349121b | 1745 | int ospf_apiserver_originate1(struct ospf_lsa *lsa, struct ospf_lsa *old) |
2d33f157 | 1746 | { |
d62a17ae | 1747 | struct ospf *ospf; |
99b7c5d6 | 1748 | |
b5a8894d | 1749 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1750 | assert(ospf); |
99b7c5d6 | 1751 | |
5349121b CH |
1752 | if (old) { |
1753 | /* | |
1754 | * An old LSA exists that we didn't originate it in this | |
1755 | * session. Dump it, but increment past it's seqnum. | |
1756 | */ | |
1757 | assert(!ospf_opaque_is_owned(old)); | |
1758 | if (IS_LSA_MAX_SEQ(old)) { | |
4adc415e | 1759 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
1760 | "%s: old LSA at maxseq", __func__); | |
5349121b CH |
1761 | return -1; |
1762 | } | |
1763 | lsa->data->ls_seqnum = lsa_seqnum_increment(old); | |
1764 | ospf_discard_from_db(ospf, old->lsdb, old); | |
1765 | } | |
1766 | ||
d62a17ae | 1767 | /* Install this LSA into LSDB. */ |
1768 | if (ospf_lsa_install(ospf, lsa->oi, lsa) == NULL) { | |
cf444bcf | 1769 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
5349121b | 1770 | "%s: ospf_lsa_install failed", __func__); |
d62a17ae | 1771 | return -1; |
1772 | } | |
2d33f157 | 1773 | |
d62a17ae | 1774 | /* Flood LSA within scope */ |
2d33f157 | 1775 | |
1776 | #ifdef NOTYET | |
d62a17ae | 1777 | /* |
1778 | * NB: Modified version of "ospf_flood_though ()" accepts NULL "inbr" | |
1779 | * parameter, and thus it does not cause SIGSEGV error. | |
1780 | */ | |
1781 | ospf_flood_through(NULL /*nbr */, lsa); | |
1782 | #else /* NOTYET */ | |
1783 | ||
1784 | ospf_apiserver_flood_opaque_lsa(lsa); | |
2d33f157 | 1785 | #endif /* NOTYET */ |
1786 | ||
d62a17ae | 1787 | return 0; |
2d33f157 | 1788 | } |
1789 | ||
1790 | ||
1791 | /* Opaque LSAs of type 9 on a specific interface can now be | |
1792 | originated. Tell clients that registered type 9. */ | |
d62a17ae | 1793 | int ospf_apiserver_lsa9_originator(void *arg) |
2d33f157 | 1794 | { |
d62a17ae | 1795 | struct ospf_interface *oi; |
2d33f157 | 1796 | |
d62a17ae | 1797 | oi = (struct ospf_interface *)arg; |
1798 | if (listcount(apiserver_list) > 0) { | |
1799 | ospf_apiserver_clients_notify_ready_type9(oi); | |
1800 | } | |
1801 | return 0; | |
2d33f157 | 1802 | } |
1803 | ||
d62a17ae | 1804 | int ospf_apiserver_lsa10_originator(void *arg) |
2d33f157 | 1805 | { |
d62a17ae | 1806 | struct ospf_area *area; |
2d33f157 | 1807 | |
d62a17ae | 1808 | area = (struct ospf_area *)arg; |
1809 | if (listcount(apiserver_list) > 0) { | |
1810 | ospf_apiserver_clients_notify_ready_type10(area); | |
1811 | } | |
1812 | return 0; | |
2d33f157 | 1813 | } |
1814 | ||
d62a17ae | 1815 | int ospf_apiserver_lsa11_originator(void *arg) |
2d33f157 | 1816 | { |
d62a17ae | 1817 | struct ospf *ospf; |
2d33f157 | 1818 | |
d62a17ae | 1819 | ospf = (struct ospf *)arg; |
1820 | if (listcount(apiserver_list) > 0) { | |
1821 | ospf_apiserver_clients_notify_ready_type11(ospf); | |
1822 | } | |
1823 | return 0; | |
2d33f157 | 1824 | } |
1825 | ||
1826 | ||
1827 | /* Periodically refresh opaque LSAs so that they do not expire in | |
1828 | other routers. */ | |
d62a17ae | 1829 | struct ospf_lsa *ospf_apiserver_lsa_refresher(struct ospf_lsa *lsa) |
2d33f157 | 1830 | { |
d62a17ae | 1831 | struct ospf_apiserver *apiserv; |
1832 | struct ospf_lsa *new = NULL; | |
1833 | struct ospf *ospf; | |
1834 | ||
ed35fc05 | 1835 | assert(lsa); |
1836 | ||
b5a8894d | 1837 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1838 | assert(ospf); |
1839 | ||
1840 | apiserv = lookup_apiserver_by_lsa(lsa); | |
1841 | if (!apiserv) { | |
4adc415e | 1842 | zlog_warn("%s: LSA[%s]: No apiserver?", __func__, |
1843 | dump_lsa_key(lsa)); | |
d62a17ae | 1844 | lsa->data->ls_age = |
1845 | htons(OSPF_LSA_MAXAGE); /* Flush it anyway. */ | |
4adf00f7 | 1846 | goto out; |
d62a17ae | 1847 | } |
1848 | ||
1849 | if (IS_LSA_MAXAGE(lsa)) { | |
1850 | ospf_opaque_lsa_flush_schedule(lsa); | |
1851 | goto out; | |
1852 | } | |
1853 | ||
1854 | /* Check if updated version of LSA instance has already prepared. */ | |
1855 | new = ospf_lsdb_lookup(&apiserv->reserve, lsa); | |
1856 | if (!new) { | |
1857 | /* This is a periodic refresh, driven by core OSPF mechanism. */ | |
1858 | new = ospf_apiserver_opaque_lsa_new(lsa->area, lsa->oi, | |
1859 | lsa->data); | |
1860 | if (!new) { | |
4adc415e | 1861 | zlog_warn("%s: Cannot create a new LSA?", __func__); |
d62a17ae | 1862 | goto out; |
1863 | } | |
1864 | } else { | |
1865 | /* This is a forcible refresh, requested by OSPF-API client. */ | |
1866 | ospf_lsdb_delete(&apiserv->reserve, new); | |
1867 | new->lsdb = NULL; | |
1868 | } | |
1869 | ||
1870 | /* Increment sequence number */ | |
1871 | new->data->ls_seqnum = lsa_seqnum_increment(lsa); | |
1872 | ||
1873 | /* New LSA is in same area. */ | |
1874 | new->area = lsa->area; | |
1875 | SET_FLAG(new->flags, OSPF_LSA_SELF); | |
1876 | ||
1877 | /* Install LSA into LSDB. */ | |
1878 | if (ospf_lsa_install(ospf, new->oi, new) == NULL) { | |
4adc415e | 1879 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
1880 | "%s: ospf_lsa_install failed", __func__); | |
d62a17ae | 1881 | ospf_lsa_unlock(&new); |
1882 | goto out; | |
1883 | } | |
1884 | ||
1885 | /* Flood updated LSA through interface, area or AS */ | |
2d33f157 | 1886 | |
1887 | #ifdef NOTYET | |
d62a17ae | 1888 | ospf_flood_through(NULL /*nbr */, new); |
2d33f157 | 1889 | #endif /* NOTYET */ |
d62a17ae | 1890 | ospf_apiserver_flood_opaque_lsa(new); |
2d33f157 | 1891 | |
d62a17ae | 1892 | /* Debug logging. */ |
1893 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) { | |
96b663a3 MS |
1894 | zlog_debug("LSA[Type%d:%pI4]: Refresh Opaque LSA", |
1895 | new->data->type, &new->data->id); | |
d62a17ae | 1896 | ospf_lsa_header_dump(new->data); |
1897 | } | |
2d33f157 | 1898 | |
1899 | out: | |
d62a17ae | 1900 | return new; |
2d33f157 | 1901 | } |
1902 | ||
1903 | ||
1904 | /* ----------------------------------------------------------- | |
78dfa0c7 | 1905 | * Following are functions to delete LSAs |
2d33f157 | 1906 | * ----------------------------------------------------------- |
1907 | */ | |
1908 | ||
d62a17ae | 1909 | int ospf_apiserver_handle_delete_request(struct ospf_apiserver *apiserv, |
1910 | struct msg *msg) | |
2d33f157 | 1911 | { |
d62a17ae | 1912 | struct msg_delete_request *dmsg; |
1913 | struct ospf_lsa *old; | |
1914 | struct ospf_area *area = NULL; | |
08172828 | 1915 | struct ospf_interface *oi = NULL; |
d62a17ae | 1916 | struct in_addr id; |
1917 | int lsa_type, opaque_type; | |
1918 | int rc = 0; | |
1919 | struct ospf *ospf; | |
1920 | ||
b5a8894d | 1921 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1922 | assert(ospf); |
1923 | ||
1924 | /* Extract opaque LSA from message */ | |
1925 | dmsg = (struct msg_delete_request *)STREAM_DATA(msg->s); | |
1926 | ||
1927 | /* Lookup area for link-local and area-local opaque LSAs */ | |
1928 | switch (dmsg->lsa_type) { | |
1929 | case OSPF_OPAQUE_LINK_LSA: | |
08172828 LB |
1930 | oi = ospf_apiserver_if_lookup_by_addr(dmsg->addr); |
1931 | if (!oi) { | |
1932 | zlog_warn("%s: unknown interface %pI4", __func__, | |
1933 | &dmsg->addr); | |
1934 | rc = OSPF_API_NOSUCHINTERFACE; | |
1935 | goto out; | |
1936 | } | |
1937 | area = oi->area; | |
1938 | break; | |
d62a17ae | 1939 | case OSPF_OPAQUE_AREA_LSA: |
08172828 | 1940 | area = ospf_area_lookup_by_area_id(ospf, dmsg->addr); |
d62a17ae | 1941 | if (!area) { |
4adc415e | 1942 | zlog_warn("%s: unknown area %pI4", __func__, |
08172828 | 1943 | &dmsg->addr); |
d62a17ae | 1944 | rc = OSPF_API_NOSUCHAREA; |
1945 | goto out; | |
1946 | } | |
1947 | break; | |
1948 | case OSPF_OPAQUE_AS_LSA: | |
1949 | /* AS-external opaque LSAs have no designated area */ | |
1950 | area = NULL; | |
1951 | break; | |
1952 | default: | |
4adc415e | 1953 | zlog_warn("%s: Cannot delete non-opaque LSA type %d", __func__, |
1954 | dmsg->lsa_type); | |
d62a17ae | 1955 | rc = OSPF_API_ILLEGALLSATYPE; |
1956 | goto out; | |
1957 | } | |
1958 | ||
1959 | /* Check if we registered this opaque type */ | |
1960 | lsa_type = dmsg->lsa_type; | |
1961 | opaque_type = dmsg->opaque_type; | |
1962 | ||
1963 | if (!apiserver_is_opaque_type_registered(apiserv, lsa_type, | |
1964 | opaque_type)) { | |
4adc415e | 1965 | zlog_warn("%s: LSA-type(%d)/Opaque-type(%d): Not registered", |
1966 | __func__, lsa_type, opaque_type); | |
d62a17ae | 1967 | rc = OSPF_API_OPAQUETYPENOTREGISTERED; |
1968 | goto out; | |
1969 | } | |
1970 | ||
1971 | /* opaque_id is in network byte order */ | |
1972 | id.s_addr = htonl( | |
1973 | SET_OPAQUE_LSID(dmsg->opaque_type, ntohl(dmsg->opaque_id))); | |
1974 | ||
1975 | /* | |
1976 | * Even if the target LSA has once scheduled to flush, it remains in | |
1977 | * the LSDB until it is finally handled by the maxage remover thread. | |
1978 | * Therefore, the lookup function below may return non-NULL result. | |
1979 | */ | |
b5a8894d | 1980 | old = ospf_lsa_lookup(ospf, area, dmsg->lsa_type, id, ospf->router_id); |
d62a17ae | 1981 | if (!old) { |
4adc415e | 1982 | zlog_warn("%s: LSA[Type%d:%pI4] not in LSDB", __func__, |
1983 | dmsg->lsa_type, &id); | |
d62a17ae | 1984 | rc = OSPF_API_NOSUCHLSA; |
1985 | goto out; | |
1986 | } | |
1987 | ||
2f30cb25 LB |
1988 | if (IS_DEL_ZERO_LEN_LSA(dmsg)) { |
1989 | /* minimize the size of the withdrawal: */ | |
1990 | old->opaque_zero_len_delete = 1; | |
1991 | } | |
1992 | ||
d62a17ae | 1993 | /* Schedule flushing of LSA from LSDB */ |
1994 | /* NB: Multiple scheduling will produce a warning message, but harmless. | |
1995 | */ | |
1996 | ospf_opaque_lsa_flush_schedule(old); | |
2d33f157 | 1997 | |
1998 | out: | |
1999 | ||
d62a17ae | 2000 | /* Send reply back to client including return code */ |
2001 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
2002 | return rc; | |
2d33f157 | 2003 | } |
2004 | ||
2005 | /* Flush self-originated opaque LSA */ | |
d62a17ae | 2006 | static int apiserver_flush_opaque_type_callback(struct ospf_lsa *lsa, |
2007 | void *p_arg, int int_arg) | |
2d33f157 | 2008 | { |
d62a17ae | 2009 | struct param_t { |
2010 | struct ospf_apiserver *apiserv; | |
d7c0a89a QY |
2011 | uint8_t lsa_type; |
2012 | uint8_t opaque_type; | |
d62a17ae | 2013 | } * param; |
2014 | ||
2015 | /* Sanity check */ | |
2016 | assert(lsa->data); | |
2017 | assert(p_arg); | |
2018 | param = (struct param_t *)p_arg; | |
2019 | ||
2020 | /* If LSA matches type and opaque type then delete it */ | |
2021 | if (IS_LSA_SELF(lsa) && lsa->data->type == param->lsa_type | |
2022 | && GET_OPAQUE_TYPE(ntohl(lsa->data->id.s_addr)) | |
2023 | == param->opaque_type) { | |
2024 | ospf_opaque_lsa_flush_schedule(lsa); | |
2025 | } | |
2026 | return 0; | |
2d33f157 | 2027 | } |
2028 | ||
2029 | /* Delete self-originated opaque LSAs of a given opaque type. This | |
2030 | function is called when an application unregisters a given opaque | |
2031 | type or a connection to an application closes and all those opaque | |
2032 | LSAs need to be flushed the LSDB. */ | |
d62a17ae | 2033 | void ospf_apiserver_flush_opaque_lsa(struct ospf_apiserver *apiserv, |
d7c0a89a | 2034 | uint8_t lsa_type, uint8_t opaque_type) |
2d33f157 | 2035 | { |
d62a17ae | 2036 | struct param_t { |
2037 | struct ospf_apiserver *apiserv; | |
d7c0a89a QY |
2038 | uint8_t lsa_type; |
2039 | uint8_t opaque_type; | |
d62a17ae | 2040 | } param; |
2041 | struct listnode *node, *nnode; | |
2042 | struct ospf *ospf; | |
2043 | struct ospf_area *area; | |
2044 | ||
b5a8894d | 2045 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 2046 | assert(ospf); |
2047 | ||
2048 | /* Set parameter struct. */ | |
2049 | param.apiserv = apiserv; | |
2050 | param.lsa_type = lsa_type; | |
2051 | param.opaque_type = opaque_type; | |
2052 | ||
2053 | switch (lsa_type) { | |
2054 | struct route_node *rn; | |
2055 | struct ospf_lsa *lsa; | |
2056 | ||
2057 | case OSPF_OPAQUE_LINK_LSA: | |
2058 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) | |
996c9314 | 2059 | LSDB_LOOP (OPAQUE_LINK_LSDB(area), rn, lsa) |
044506e7 DS |
2060 | apiserver_flush_opaque_type_callback( |
2061 | lsa, (void *)¶m, 0); | |
d62a17ae | 2062 | break; |
2063 | case OSPF_OPAQUE_AREA_LSA: | |
2064 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) | |
996c9314 | 2065 | LSDB_LOOP (OPAQUE_AREA_LSDB(area), rn, lsa) |
044506e7 DS |
2066 | apiserver_flush_opaque_type_callback( |
2067 | lsa, (void *)¶m, 0); | |
d62a17ae | 2068 | break; |
2069 | case OSPF_OPAQUE_AS_LSA: | |
996c9314 | 2070 | LSDB_LOOP (OPAQUE_LINK_LSDB(ospf), rn, lsa) |
044506e7 DS |
2071 | apiserver_flush_opaque_type_callback(lsa, |
2072 | (void *)¶m, 0); | |
d62a17ae | 2073 | break; |
2074 | default: | |
2075 | break; | |
2076 | } | |
2077 | return; | |
2d33f157 | 2078 | } |
2079 | ||
2080 | ||
2081 | /* ----------------------------------------------------------- | |
78dfa0c7 | 2082 | * Following are callback functions to handle opaque types |
2d33f157 | 2083 | * ----------------------------------------------------------- |
2084 | */ | |
2085 | ||
d62a17ae | 2086 | int ospf_apiserver_new_if(struct interface *ifp) |
2d33f157 | 2087 | { |
d62a17ae | 2088 | struct ospf_interface *oi; |
2089 | ||
2090 | /* For some strange reason it seems possible that we are invoked | |
2091 | with an interface that has no name. This seems to happen during | |
2092 | initialization. Return if this happens */ | |
2093 | ||
2094 | if (ifp->name[0] == '\0') { | |
2095 | /* interface has empty name */ | |
4adc415e | 2096 | zlog_warn("%s: interface has no name?", __func__); |
d62a17ae | 2097 | return 0; |
2098 | } | |
2099 | ||
2100 | /* zlog_warn for debugging */ | |
2101 | zlog_warn("ospf_apiserver_new_if"); | |
2102 | zlog_warn("ifp name=%s status=%d index=%d", ifp->name, ifp->status, | |
2103 | ifp->ifindex); | |
2104 | ||
2105 | if (ifp->name[0] == '\0') { | |
2106 | /* interface has empty name */ | |
4adc415e | 2107 | zlog_warn("%s: interface has no name?", __func__); |
d62a17ae | 2108 | return 0; |
2109 | } | |
2110 | ||
2111 | oi = ospf_apiserver_if_lookup_by_ifp(ifp); | |
2112 | ||
2113 | if (!oi) { | |
2114 | /* This interface is known to Zebra but not to OSPF daemon yet. | |
2115 | */ | |
4adc415e | 2116 | zlog_warn("%s: interface %s not known to OSPFd?", __func__, |
2117 | ifp->name); | |
d62a17ae | 2118 | return 0; |
2119 | } | |
2120 | ||
2121 | assert(oi); | |
2122 | ||
2123 | /* New interface added to OSPF, tell clients about it */ | |
2124 | if (listcount(apiserver_list) > 0) { | |
2125 | ospf_apiserver_clients_notify_new_if(oi); | |
2126 | } | |
2127 | return 0; | |
2d33f157 | 2128 | } |
2129 | ||
d62a17ae | 2130 | int ospf_apiserver_del_if(struct interface *ifp) |
2d33f157 | 2131 | { |
d62a17ae | 2132 | struct ospf_interface *oi; |
2133 | ||
2134 | /* zlog_warn for debugging */ | |
4adc415e | 2135 | zlog_warn("%s ifp name=%s status=%d index=%d", __func__, ifp->name, |
2136 | ifp->status, ifp->ifindex); | |
d62a17ae | 2137 | |
2138 | oi = ospf_apiserver_if_lookup_by_ifp(ifp); | |
2139 | ||
2140 | if (!oi) { | |
2141 | /* This interface is known to Zebra but not to OSPF daemon | |
2142 | anymore. No need to tell clients about it */ | |
97355a6d | 2143 | zlog_warn("ifp name=%s not known to OSPFd", ifp->name); |
d62a17ae | 2144 | return 0; |
2145 | } | |
2146 | ||
2147 | /* Interface deleted, tell clients about it */ | |
2148 | if (listcount(apiserver_list) > 0) { | |
2149 | ospf_apiserver_clients_notify_del_if(oi); | |
2150 | } | |
2151 | return 0; | |
2d33f157 | 2152 | } |
2153 | ||
d62a17ae | 2154 | void ospf_apiserver_ism_change(struct ospf_interface *oi, int old_state) |
2d33f157 | 2155 | { |
d62a17ae | 2156 | /* Tell clients about interface change */ |
2d33f157 | 2157 | |
d62a17ae | 2158 | /* zlog_warn for debugging */ |
4adc415e | 2159 | zlog_warn("%s", __func__); |
d62a17ae | 2160 | if (listcount(apiserver_list) > 0) { |
2161 | ospf_apiserver_clients_notify_ism_change(oi); | |
2162 | } | |
2d33f157 | 2163 | |
4adc415e | 2164 | zlog_warn("%s oi->ifp->name=%s old_state=%d oi->state=%d", __func__, |
2165 | oi->ifp->name, old_state, oi->state); | |
2d33f157 | 2166 | } |
2167 | ||
d62a17ae | 2168 | void ospf_apiserver_nsm_change(struct ospf_neighbor *nbr, int old_status) |
2d33f157 | 2169 | { |
d62a17ae | 2170 | /* Neighbor status changed, tell clients about it */ |
4adc415e | 2171 | zlog_warn("%s", __func__); |
d62a17ae | 2172 | if (listcount(apiserver_list) > 0) { |
2173 | ospf_apiserver_clients_notify_nsm_change(nbr); | |
2174 | } | |
2d33f157 | 2175 | } |
2176 | ||
3e63092b RW |
2177 | void ospf_apiserver_show_info(struct vty *vty, struct json_object *json, |
2178 | struct ospf_lsa *lsa) | |
2d33f157 | 2179 | { |
d62a17ae | 2180 | struct opaque_lsa { |
2181 | struct lsa_header header; | |
d7c0a89a | 2182 | uint8_t data[1]; /* opaque data have variable length. This is |
d62a17ae | 2183 | start |
2184 | address */ | |
2185 | }; | |
2186 | struct opaque_lsa *olsa; | |
2187 | int opaquelen; | |
2188 | ||
2189 | olsa = (struct opaque_lsa *)lsa->data; | |
2190 | ||
2191 | if (VALID_OPAQUE_INFO_LEN(lsa->data)) | |
2192 | opaquelen = ntohs(lsa->data->length) - OSPF_LSA_HEADER_SIZE; | |
2193 | else | |
2194 | opaquelen = 0; | |
2195 | ||
2196 | /* Output information about opaque LSAs */ | |
97385ddd CH |
2197 | if (json) |
2198 | json_object_string_addf(json, "opaqueData", "%*pHXn", | |
2199 | (int)opaquelen, olsa->data); | |
2200 | else if (vty != NULL) { | |
d62a17ae | 2201 | int i; |
2202 | vty_out(vty, | |
2203 | " Added using OSPF API: %u octets of opaque data %s\n", | |
2204 | opaquelen, | |
2205 | VALID_OPAQUE_INFO_LEN(lsa->data) ? "" | |
2206 | : "(Invalid length?)"); | |
2207 | vty_out(vty, " Opaque data: "); | |
2208 | ||
2209 | for (i = 0; i < opaquelen; i++) { | |
2210 | vty_out(vty, "0x%x ", olsa->data[i]); | |
2211 | } | |
2212 | vty_out(vty, "\n"); | |
2213 | } else { | |
2214 | int i; | |
2215 | zlog_debug( | |
2216 | " Added using OSPF API: %u octets of opaque data %s", | |
2217 | opaquelen, | |
2218 | VALID_OPAQUE_INFO_LEN(lsa->data) ? "" | |
2219 | : "(Invalid length?)"); | |
2220 | zlog_debug(" Opaque data: "); | |
2221 | ||
2222 | for (i = 0; i < opaquelen; i++) { | |
2223 | zlog_debug("0x%x ", olsa->data[i]); | |
2224 | } | |
d62a17ae | 2225 | } |
2226 | return; | |
2d33f157 | 2227 | } |
2228 | ||
2229 | /* ----------------------------------------------------------- | |
78dfa0c7 | 2230 | * Following are functions to notify clients about events |
2d33f157 | 2231 | * ----------------------------------------------------------- |
2232 | */ | |
2233 | ||
2234 | /* Send a message to all clients. This is useful for messages | |
2235 | that need to be notified to all clients (such as interface | |
2236 | changes) */ | |
2237 | ||
d62a17ae | 2238 | void ospf_apiserver_clients_notify_all(struct msg *msg) |
2d33f157 | 2239 | { |
d62a17ae | 2240 | struct listnode *node, *nnode; |
2241 | struct ospf_apiserver *apiserv; | |
2d33f157 | 2242 | |
d62a17ae | 2243 | /* Send message to all clients */ |
2244 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) | |
2245 | ospf_apiserver_send_msg(apiserv, msg); | |
2d33f157 | 2246 | } |
2247 | ||
2248 | /* An interface is now ready to accept opaque LSAs. Notify all | |
2249 | clients that registered to use this opaque type */ | |
d62a17ae | 2250 | void ospf_apiserver_clients_notify_ready_type9(struct ospf_interface *oi) |
2d33f157 | 2251 | { |
d62a17ae | 2252 | struct listnode *node, *nnode; |
2253 | struct msg *msg; | |
2254 | struct ospf_apiserver *apiserv; | |
2255 | ||
2256 | assert(oi); | |
2257 | if (!oi->address) { | |
2258 | zlog_warn("Interface has no address?"); | |
2259 | return; | |
2260 | } | |
2261 | ||
2262 | if (!ospf_apiserver_is_ready_type9(oi)) { | |
2263 | zlog_warn("Interface not ready for type 9?"); | |
2264 | return; | |
2265 | } | |
2266 | ||
2267 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2268 | struct listnode *node2, *nnode2; | |
2269 | struct registered_opaque_type *r; | |
2270 | ||
2271 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
2272 | r)) { | |
2273 | if (r->lsa_type == OSPF_OPAQUE_LINK_LSA) { | |
2274 | msg = new_msg_ready_notify( | |
2275 | 0, OSPF_OPAQUE_LINK_LSA, r->opaque_type, | |
2276 | oi->address->u.prefix4); | |
2277 | if (!msg) { | |
2278 | zlog_warn( | |
4adc415e | 2279 | "%s: new_msg_ready_notify failed", |
2280 | __func__); | |
2d33f157 | 2281 | #ifdef NOTYET |
d62a17ae | 2282 | /* Cannot allocate new message. What |
2283 | * should we do? */ | |
2284 | ospf_apiserver_free(apiserv); | |
2d33f157 | 2285 | #endif |
d62a17ae | 2286 | goto out; |
2287 | } | |
2d33f157 | 2288 | |
d62a17ae | 2289 | ospf_apiserver_send_msg(apiserv, msg); |
2290 | msg_free(msg); | |
2291 | } | |
2292 | } | |
2d33f157 | 2293 | } |
2d33f157 | 2294 | |
2295 | out: | |
d62a17ae | 2296 | return; |
2d33f157 | 2297 | } |
2298 | ||
d62a17ae | 2299 | void ospf_apiserver_clients_notify_ready_type10(struct ospf_area *area) |
2d33f157 | 2300 | { |
d62a17ae | 2301 | struct listnode *node, *nnode; |
2302 | struct msg *msg; | |
2303 | struct ospf_apiserver *apiserv; | |
2304 | ||
2305 | assert(area); | |
2306 | ||
2307 | if (!ospf_apiserver_is_ready_type10(area)) { | |
2308 | zlog_warn("Area not ready for type 10?"); | |
2309 | return; | |
2310 | } | |
2311 | ||
2312 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2313 | struct listnode *node2, *nnode2; | |
2314 | struct registered_opaque_type *r; | |
2315 | ||
2316 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
2317 | r)) { | |
2318 | if (r->lsa_type == OSPF_OPAQUE_AREA_LSA) { | |
2319 | msg = new_msg_ready_notify( | |
2320 | 0, OSPF_OPAQUE_AREA_LSA, r->opaque_type, | |
2321 | area->area_id); | |
2322 | if (!msg) { | |
2323 | zlog_warn( | |
4adc415e | 2324 | "%s: new_msg_ready_nofity failed", |
2325 | __func__); | |
2d33f157 | 2326 | #ifdef NOTYET |
d62a17ae | 2327 | /* Cannot allocate new message. What |
2328 | * should we do? */ | |
2329 | ospf_apiserver_free(apiserv); | |
2d33f157 | 2330 | #endif |
d62a17ae | 2331 | goto out; |
2332 | } | |
2d33f157 | 2333 | |
d62a17ae | 2334 | ospf_apiserver_send_msg(apiserv, msg); |
2335 | msg_free(msg); | |
2336 | } | |
2337 | } | |
2d33f157 | 2338 | } |
2d33f157 | 2339 | |
2340 | out: | |
d62a17ae | 2341 | return; |
2d33f157 | 2342 | } |
2343 | ||
2344 | ||
d62a17ae | 2345 | void ospf_apiserver_clients_notify_ready_type11(struct ospf *top) |
2d33f157 | 2346 | { |
d62a17ae | 2347 | struct listnode *node, *nnode; |
2348 | struct msg *msg; | |
2349 | struct in_addr id_null = {.s_addr = 0L}; | |
2350 | struct ospf_apiserver *apiserv; | |
2351 | ||
2352 | assert(top); | |
2353 | ||
2354 | if (!ospf_apiserver_is_ready_type11(top)) { | |
2355 | zlog_warn("AS not ready for type 11?"); | |
2356 | return; | |
2357 | } | |
2358 | ||
2359 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2360 | struct listnode *node2, *nnode2; | |
2361 | struct registered_opaque_type *r; | |
2362 | ||
2363 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
2364 | r)) { | |
2365 | if (r->lsa_type == OSPF_OPAQUE_AS_LSA) { | |
2366 | msg = new_msg_ready_notify( | |
2367 | 0, OSPF_OPAQUE_AS_LSA, r->opaque_type, | |
2368 | id_null); | |
2369 | if (!msg) { | |
2370 | zlog_warn( | |
4adc415e | 2371 | "%s: new_msg_ready_notify failed", |
2372 | __func__); | |
2d33f157 | 2373 | #ifdef NOTYET |
d62a17ae | 2374 | /* Cannot allocate new message. What |
2375 | * should we do? */ | |
2376 | ospf_apiserver_free(apiserv); | |
2d33f157 | 2377 | #endif |
d62a17ae | 2378 | goto out; |
2379 | } | |
2d33f157 | 2380 | |
d62a17ae | 2381 | ospf_apiserver_send_msg(apiserv, msg); |
2382 | msg_free(msg); | |
2383 | } | |
2384 | } | |
2d33f157 | 2385 | } |
2d33f157 | 2386 | |
2387 | out: | |
d62a17ae | 2388 | return; |
2d33f157 | 2389 | } |
2390 | ||
d62a17ae | 2391 | void ospf_apiserver_clients_notify_new_if(struct ospf_interface *oi) |
2d33f157 | 2392 | { |
d62a17ae | 2393 | struct msg *msg; |
2394 | ||
2395 | msg = new_msg_new_if(0, oi->address->u.prefix4, oi->area->area_id); | |
2396 | if (msg != NULL) { | |
2397 | ospf_apiserver_clients_notify_all(msg); | |
2398 | msg_free(msg); | |
2399 | } | |
2d33f157 | 2400 | } |
2401 | ||
d62a17ae | 2402 | void ospf_apiserver_clients_notify_del_if(struct ospf_interface *oi) |
2d33f157 | 2403 | { |
d62a17ae | 2404 | struct msg *msg; |
2405 | ||
2406 | msg = new_msg_del_if(0, oi->address->u.prefix4); | |
2407 | if (msg != NULL) { | |
2408 | ospf_apiserver_clients_notify_all(msg); | |
2409 | msg_free(msg); | |
2410 | } | |
2d33f157 | 2411 | } |
2412 | ||
d62a17ae | 2413 | void ospf_apiserver_clients_notify_ism_change(struct ospf_interface *oi) |
2d33f157 | 2414 | { |
d62a17ae | 2415 | struct msg *msg; |
2416 | struct in_addr ifaddr = {.s_addr = 0L}; | |
2417 | struct in_addr area_id = {.s_addr = 0L}; | |
2418 | ||
2419 | assert(oi); | |
2420 | assert(oi->ifp); | |
2421 | ||
2422 | if (oi->address) { | |
2423 | ifaddr = oi->address->u.prefix4; | |
2424 | } | |
2425 | if (oi->area) { | |
2426 | area_id = oi->area->area_id; | |
2427 | } | |
2428 | ||
2429 | msg = new_msg_ism_change(0, ifaddr, area_id, oi->state); | |
2430 | if (!msg) { | |
4adc415e | 2431 | zlog_warn("%s: msg_new failed", __func__); |
d62a17ae | 2432 | return; |
2433 | } | |
2434 | ||
2435 | ospf_apiserver_clients_notify_all(msg); | |
2436 | msg_free(msg); | |
2d33f157 | 2437 | } |
2438 | ||
d62a17ae | 2439 | void ospf_apiserver_clients_notify_nsm_change(struct ospf_neighbor *nbr) |
2d33f157 | 2440 | { |
d62a17ae | 2441 | struct msg *msg; |
9d162466 | 2442 | struct in_addr ifaddr; |
7295876a | 2443 | struct in_addr nbraddr; |
2d33f157 | 2444 | |
d62a17ae | 2445 | assert(nbr); |
2d33f157 | 2446 | |
45559c4d | 2447 | ifaddr = nbr->oi->address->u.prefix4; |
2d33f157 | 2448 | |
d62a17ae | 2449 | nbraddr = nbr->address.u.prefix4; |
2d33f157 | 2450 | |
d62a17ae | 2451 | msg = new_msg_nsm_change(0, ifaddr, nbraddr, nbr->router_id, |
2452 | nbr->state); | |
2453 | if (!msg) { | |
4adc415e | 2454 | zlog_warn("%s: msg_new failed", __func__); |
d62a17ae | 2455 | return; |
2456 | } | |
2d33f157 | 2457 | |
d62a17ae | 2458 | ospf_apiserver_clients_notify_all(msg); |
2459 | msg_free(msg); | |
2d33f157 | 2460 | } |
2461 | ||
b1e40ef0 CH |
2462 | static int apiserver_clients_lsa_change_notify(uint8_t msgtype, |
2463 | struct ospf_lsa *lsa) | |
2d33f157 | 2464 | { |
d62a17ae | 2465 | struct msg *msg; |
2466 | struct listnode *node, *nnode; | |
2467 | struct ospf_apiserver *apiserv; | |
2468 | ||
2469 | /* Default area for AS-External and Opaque11 LSAs */ | |
2470 | struct in_addr area_id = {.s_addr = 0L}; | |
2471 | ||
2472 | /* Default interface for non Opaque9 LSAs */ | |
2473 | struct in_addr ifaddr = {.s_addr = 0L}; | |
2474 | ||
2475 | if (lsa->area) { | |
2476 | area_id = lsa->area->area_id; | |
2477 | } | |
2478 | if (lsa->data->type == OSPF_OPAQUE_LINK_LSA) { | |
2479 | assert(lsa->oi); | |
2480 | ifaddr = lsa->oi->address->u.prefix4; | |
2481 | } | |
2482 | ||
2483 | /* Prepare message that can be sent to clients that have a matching | |
2484 | filter */ | |
2485 | msg = new_msg_lsa_change_notify(msgtype, 0L, /* no sequence number */ | |
2486 | ifaddr, area_id, | |
2487 | lsa->flags & OSPF_LSA_SELF, lsa->data); | |
2488 | if (!msg) { | |
4adc415e | 2489 | zlog_warn("%s: msg_new failed", __func__); |
b1e40ef0 | 2490 | return -1; |
d62a17ae | 2491 | } |
2492 | ||
2493 | /* Now send message to all clients with a matching filter */ | |
2494 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2495 | struct lsa_filter_type *filter; | |
d7c0a89a QY |
2496 | uint16_t mask; |
2497 | uint32_t *area; | |
d62a17ae | 2498 | int i; |
2499 | ||
2500 | /* Check filter for this client. */ | |
2501 | filter = apiserv->filter; | |
2502 | ||
2503 | /* Check area IDs in case of non AS-E LSAs. | |
2504 | * If filter has areas (num_areas > 0), | |
2505 | * then one of the areas must match the area ID of this LSA. */ | |
2506 | ||
2507 | i = filter->num_areas; | |
2508 | if ((lsa->data->type == OSPF_AS_EXTERNAL_LSA) | |
2509 | || (lsa->data->type == OSPF_OPAQUE_AS_LSA)) { | |
2510 | i = 0; | |
2d33f157 | 2511 | } |
d62a17ae | 2512 | |
2513 | if (i > 0) { | |
d7c0a89a | 2514 | area = (uint32_t *)(filter + 1); |
d62a17ae | 2515 | while (i) { |
2516 | if (*area == area_id.s_addr) { | |
2517 | break; | |
2518 | } | |
2519 | i--; | |
2520 | area++; | |
2521 | } | |
2522 | } else { | |
2523 | i = 1; | |
2524 | } | |
2525 | ||
2526 | if (i > 0) { | |
2527 | /* Area match. Check LSA type. */ | |
2528 | mask = ntohs(filter->typemask); | |
2529 | ||
2530 | if (mask & Power2[lsa->data->type]) { | |
2531 | /* Type also matches. Check origin. */ | |
2532 | if ((filter->origin == ANY_ORIGIN) | |
2533 | || (filter->origin == IS_LSA_SELF(lsa))) { | |
2534 | ospf_apiserver_send_msg(apiserv, msg); | |
2535 | } | |
2536 | } | |
2d33f157 | 2537 | } |
2d33f157 | 2538 | } |
d62a17ae | 2539 | /* Free message since it is not used anymore */ |
2540 | msg_free(msg); | |
b1e40ef0 CH |
2541 | |
2542 | return 0; | |
2d33f157 | 2543 | } |
2544 | ||
2545 | ||
2546 | /* ------------------------------------------------------------- | |
78dfa0c7 | 2547 | * Following are hooks invoked when LSAs are updated or deleted |
2d33f157 | 2548 | * ------------------------------------------------------------- |
2549 | */ | |
2550 | ||
2551 | ||
b1e40ef0 | 2552 | int ospf_apiserver_lsa_update(struct ospf_lsa *lsa) |
2d33f157 | 2553 | { |
d62a17ae | 2554 | |
2555 | /* Only notify this update if the LSA's age is smaller than | |
2556 | MAXAGE. Otherwise clients would see LSA updates with max age just | |
2557 | before they are deleted from the LSDB. LSA delete messages have | |
2558 | MAXAGE too but should not be filtered. */ | |
b1e40ef0 | 2559 | if (IS_LSA_MAXAGE(lsa)) |
d62a17ae | 2560 | return 0; |
b1e40ef0 | 2561 | return apiserver_clients_lsa_change_notify(MSG_LSA_UPDATE_NOTIFY, lsa); |
2d33f157 | 2562 | } |
2563 | ||
d62a17ae | 2564 | int ospf_apiserver_lsa_delete(struct ospf_lsa *lsa) |
2d33f157 | 2565 | { |
b1e40ef0 | 2566 | return apiserver_clients_lsa_change_notify(MSG_LSA_DELETE_NOTIFY, lsa); |
2d33f157 | 2567 | } |
2568 | ||
149491af CH |
2569 | /* ------------------------------------------------------------- |
2570 | * Reachable functions | |
2571 | * ------------------------------------------------------------- | |
2572 | */ | |
2573 | ||
2574 | static inline int cmp_route_nodes(struct route_node *orn, | |
2575 | struct route_node *nrn) | |
2576 | { | |
2577 | if (!orn) | |
2578 | return 1; | |
2579 | else if (!nrn) | |
2580 | return -1; | |
156a904c CH |
2581 | |
2582 | uint32_t opn = ntohl(orn->p.u.prefix4.s_addr); | |
2583 | uint32_t npn = ntohl(nrn->p.u.prefix4.s_addr); | |
2584 | if (opn < npn) | |
149491af | 2585 | return -1; |
156a904c | 2586 | else if (opn > npn) |
149491af CH |
2587 | return 1; |
2588 | else | |
2589 | return 0; | |
2590 | } | |
2591 | ||
2592 | void ospf_apiserver_notify_reachable(struct route_table *ort, | |
2593 | struct route_table *nrt) | |
2594 | { | |
2595 | struct msg *msg; | |
2596 | struct msg_reachable_change *areach; | |
2597 | struct route_node *orn, *nrn; | |
2598 | const uint insz = sizeof(struct in_addr); | |
2599 | struct in_addr *abuf = NULL, *dbuf = NULL; | |
2600 | struct in_addr *a = NULL, *d = NULL; | |
2601 | uint nadd, nremove; | |
2602 | int cmp; | |
2603 | ||
2604 | if (!ort && !nrt) { | |
2605 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2606 | zlog_debug("%s: no routing tables", __func__); | |
2607 | return; | |
2608 | } | |
2609 | if (nrt && nrt->count) | |
29a1a53d | 2610 | a = abuf = XCALLOC(MTYPE_APISERVER, insz * nrt->count); |
149491af | 2611 | if (ort && ort->count) |
29a1a53d | 2612 | d = dbuf = XCALLOC(MTYPE_APISERVER, insz * ort->count); |
149491af CH |
2613 | |
2614 | /* walk both tables */ | |
2615 | orn = ort ? route_top(ort) : NULL; | |
2616 | nrn = nrt ? route_top(nrt) : NULL; | |
2617 | while (orn || nrn) { | |
2618 | if (orn && !listhead((struct list *)orn->info)) { | |
2619 | orn = route_next(orn); | |
2620 | continue; | |
2621 | } | |
2622 | if (nrn && !listhead((struct list *)nrn->info)) { | |
2623 | nrn = route_next(nrn); | |
2624 | continue; | |
2625 | } | |
2626 | cmp = cmp_route_nodes(orn, nrn); | |
2627 | if (!cmp) { | |
2628 | /* if old == new advance old and new */ | |
2629 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2630 | zlog_debug("keeping router id: %pI4", | |
2631 | &orn->p.u.prefix4); | |
2632 | orn = route_next(orn); | |
2633 | nrn = route_next(nrn); | |
2634 | } else if (cmp < 0) { | |
2635 | assert(d != NULL); /* Silence SA warning */ | |
2636 | ||
2637 | /* if old < new, delete old, advance old */ | |
2638 | *d++ = orn->p.u.prefix4; | |
2639 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2640 | zlog_debug("removing router id: %pI4", | |
2641 | &orn->p.u.prefix4); | |
2642 | orn = route_next(orn); | |
2643 | } else { | |
2644 | assert(a != NULL); /* Silence SA warning */ | |
2645 | ||
2646 | /* if new < old, add new, advance new */ | |
2647 | *a++ = nrn->p.u.prefix4; | |
2648 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2649 | zlog_debug("adding router id: %pI4", | |
2650 | &nrn->p.u.prefix4); | |
2651 | nrn = route_next(nrn); | |
2652 | } | |
2653 | } | |
2654 | ||
2655 | nadd = abuf ? (a - abuf) : 0; | |
2656 | nremove = dbuf ? (d - dbuf) : 0; | |
2657 | a = abuf; | |
2658 | d = dbuf; | |
2659 | ||
2660 | while (nadd + nremove) { | |
2661 | msg = new_msg_reachable_change(0, nadd, a, nremove, d); | |
2662 | areach = (struct msg_reachable_change *)STREAM_DATA(msg->s); | |
2663 | ||
2664 | a += ntohs(areach->nadd); | |
2665 | nadd = nadd - ntohs(areach->nadd); | |
2666 | ||
2667 | d += ntohs(areach->nremove); | |
2668 | nremove = nremove - ntohs(areach->nremove); | |
2669 | ||
2670 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2671 | zlog_debug("%s: adding %d removing %d", __func__, | |
2672 | ntohs(areach->nadd), ntohs(areach->nremove)); | |
2673 | ospf_apiserver_clients_notify_all(msg); | |
2674 | msg_free(msg); | |
2675 | } | |
2676 | if (abuf) | |
29a1a53d | 2677 | XFREE(MTYPE_APISERVER, abuf); |
149491af | 2678 | if (dbuf) |
29a1a53d | 2679 | XFREE(MTYPE_APISERVER, dbuf); |
149491af CH |
2680 | } |
2681 | ||
2682 | ||
44038c7a CH |
2683 | void ospf_apiserver_clients_notify_router_id_change(struct in_addr router_id) |
2684 | { | |
2685 | struct msg *msg; | |
2686 | ||
2687 | msg = new_msg_router_id_change(0, router_id); | |
2688 | if (!msg) { | |
2689 | zlog_warn("%s: new_msg_router_id_change failed", __func__); | |
2690 | return; | |
2691 | } | |
2692 | ||
2693 | ospf_apiserver_clients_notify_all(msg); | |
2694 | msg_free(msg); | |
2695 | } | |
2696 | ||
2697 | ||
2d33f157 | 2698 | #endif /* SUPPORT_OSPF_API */ |