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2d33f157 | 1 | /* |
2 | * Server side of OSPF API. | |
3 | * Copyright (C) 2001, 2002 Ralph Keller | |
44038c7a | 4 | * Copyright (c) 2022, LabN Consulting, L.L.C. |
2d33f157 | 5 | * |
6 | * This file is part of GNU Zebra. | |
896014f4 | 7 | * |
2d33f157 | 8 | * GNU Zebra is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published | |
10 | * by the Free Software Foundation; either version 2, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | * GNU Zebra is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
896014f4 DL |
18 | * You should have received a copy of the GNU General Public License along |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
2d33f157 | 21 | */ |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #ifdef SUPPORT_OSPF_API | |
2d33f157 | 26 | |
27 | #include "linklist.h" | |
28 | #include "prefix.h" | |
29 | #include "if.h" | |
30 | #include "table.h" | |
31 | #include "memory.h" | |
32 | #include "command.h" | |
33 | #include "vty.h" | |
34 | #include "stream.h" | |
35 | #include "log.h" | |
36 | #include "thread.h" | |
37 | #include "hash.h" | |
d62a17ae | 38 | #include "sockunion.h" /* for inet_aton() */ |
2d33f157 | 39 | #include "buffer.h" |
40 | ||
41 | #include <sys/types.h> | |
42 | ||
d62a17ae | 43 | #include "ospfd/ospfd.h" /* for "struct thread_master" */ |
2d33f157 | 44 | #include "ospfd/ospf_interface.h" |
45 | #include "ospfd/ospf_ism.h" | |
46 | #include "ospfd/ospf_asbr.h" | |
47 | #include "ospfd/ospf_lsa.h" | |
48 | #include "ospfd/ospf_lsdb.h" | |
49 | #include "ospfd/ospf_neighbor.h" | |
50 | #include "ospfd/ospf_nsm.h" | |
51 | #include "ospfd/ospf_flood.h" | |
52 | #include "ospfd/ospf_packet.h" | |
53 | #include "ospfd/ospf_spf.h" | |
54 | #include "ospfd/ospf_dump.h" | |
55 | #include "ospfd/ospf_route.h" | |
56 | #include "ospfd/ospf_ase.h" | |
57 | #include "ospfd/ospf_zebra.h" | |
85c9b439 | 58 | #include "ospfd/ospf_errors.h" |
29a1a53d | 59 | #include "ospfd/ospf_memory.h" |
2d33f157 | 60 | |
61 | #include "ospfd/ospf_api.h" | |
62 | #include "ospfd/ospf_apiserver.h" | |
63 | ||
29a1a53d DS |
64 | DEFINE_MTYPE_STATIC(OSPFD, APISERVER, "API Server"); |
65 | DEFINE_MTYPE_STATIC(OSPFD, APISERVER_MSGFILTER, "API Server Message Filter"); | |
66 | ||
2d33f157 | 67 | /* This is an implementation of an API to the OSPF daemon that allows |
68 | * external applications to access the OSPF daemon through socket | |
69 | * connections. The application can use this API to inject its own | |
70 | * opaque LSAs and flood them to other OSPF daemons. Other OSPF | |
71 | * daemons then receive these LSAs and inform applications through the | |
72 | * API by sending a corresponding message. The application can also | |
73 | * register to receive all LSA types (in addition to opaque types) and | |
74 | * use this information to reconstruct the OSPF's LSDB. The OSPF | |
75 | * daemon supports multiple applications concurrently. */ | |
76 | ||
77 | /* List of all active connections. */ | |
87d6f87a | 78 | struct list *apiserver_list; |
2d33f157 | 79 | |
80 | /* ----------------------------------------------------------- | |
81 | * Functions to lookup interfaces | |
82 | * ----------------------------------------------------------- | |
83 | */ | |
84 | ||
d62a17ae | 85 | struct ospf_interface *ospf_apiserver_if_lookup_by_addr(struct in_addr address) |
2d33f157 | 86 | { |
d62a17ae | 87 | struct listnode *node, *nnode; |
88 | struct ospf_interface *oi; | |
b5a8894d | 89 | struct ospf *ospf = NULL; |
99b7c5d6 | 90 | |
b5a8894d CS |
91 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
92 | if (!ospf) | |
d62a17ae | 93 | return NULL; |
2d33f157 | 94 | |
d62a17ae | 95 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) |
96 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
97 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
98 | return oi; | |
87d6f87a | 99 | |
d62a17ae | 100 | return NULL; |
2d33f157 | 101 | } |
102 | ||
d62a17ae | 103 | struct ospf_interface *ospf_apiserver_if_lookup_by_ifp(struct interface *ifp) |
2d33f157 | 104 | { |
d62a17ae | 105 | struct listnode *node, *nnode; |
106 | struct ospf_interface *oi; | |
b5a8894d | 107 | struct ospf *ospf = NULL; |
99b7c5d6 | 108 | |
b5a8894d CS |
109 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
110 | if (!ospf) | |
d62a17ae | 111 | return NULL; |
2d33f157 | 112 | |
d62a17ae | 113 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) |
114 | if (oi->ifp == ifp) | |
115 | return oi; | |
87d6f87a | 116 | |
d62a17ae | 117 | return NULL; |
2d33f157 | 118 | } |
119 | ||
120 | /* ----------------------------------------------------------- | |
121 | * Initialization | |
122 | * ----------------------------------------------------------- | |
123 | */ | |
124 | ||
d62a17ae | 125 | unsigned short ospf_apiserver_getport(void) |
2d33f157 | 126 | { |
d62a17ae | 127 | struct servent *sp = getservbyname("ospfapi", "tcp"); |
2d33f157 | 128 | |
d62a17ae | 129 | return sp ? ntohs(sp->s_port) : OSPF_API_SYNC_PORT; |
2d33f157 | 130 | } |
131 | ||
132 | /* Initialize OSPF API module. Invoked from ospf_opaque_init() */ | |
d62a17ae | 133 | int ospf_apiserver_init(void) |
2d33f157 | 134 | { |
d62a17ae | 135 | int fd; |
136 | int rc = -1; | |
137 | ||
138 | /* Create new socket for synchronous messages. */ | |
139 | fd = ospf_apiserver_serv_sock_family(ospf_apiserver_getport(), AF_INET); | |
140 | ||
141 | if (fd < 0) | |
142 | goto out; | |
143 | ||
144 | /* Schedule new thread that handles accepted connections. */ | |
145 | ospf_apiserver_event(OSPF_APISERVER_ACCEPT, fd, NULL); | |
146 | ||
147 | /* Initialize list that keeps track of all connections. */ | |
148 | apiserver_list = list_new(); | |
149 | ||
150 | /* Register opaque-independent call back functions. These functions | |
151 | are invoked on ISM, NSM changes and LSA update and LSA deletes */ | |
152 | rc = ospf_register_opaque_functab( | |
153 | 0 /* all LSAs */, 0 /* all opaque types */, | |
154 | ospf_apiserver_new_if, ospf_apiserver_del_if, | |
155 | ospf_apiserver_ism_change, ospf_apiserver_nsm_change, NULL, | |
156 | NULL, NULL, NULL, /* ospf_apiserver_show_info */ | |
157 | NULL, /* originator_func */ | |
158 | NULL, /* ospf_apiserver_lsa_refresher */ | |
159 | ospf_apiserver_lsa_update, ospf_apiserver_lsa_delete); | |
160 | if (rc != 0) { | |
ade6974d | 161 | flog_warn( |
cf444bcf | 162 | EC_OSPF_OPAQUE_REGISTRATION, |
ade6974d | 163 | "ospf_apiserver_init: Failed to register opaque type [0/0]"); |
d62a17ae | 164 | } |
165 | ||
166 | rc = 0; | |
2d33f157 | 167 | |
168 | out: | |
d62a17ae | 169 | return rc; |
2d33f157 | 170 | } |
171 | ||
172 | /* Terminate OSPF API module. */ | |
d62a17ae | 173 | void ospf_apiserver_term(void) |
2d33f157 | 174 | { |
d62a17ae | 175 | struct ospf_apiserver *apiserv; |
176 | ||
177 | /* Unregister wildcard [0/0] type */ | |
178 | ospf_delete_opaque_functab(0 /* all LSAs */, 0 /* all opaque types */); | |
179 | ||
180 | /* | |
181 | * Free all client instances. ospf_apiserver_free removes the node | |
182 | * from the list, so we examine the head of the list anew each time. | |
183 | */ | |
184 | while (apiserver_list | |
185 | && (apiserv = listgetdata(listhead(apiserver_list))) != NULL) | |
186 | ospf_apiserver_free(apiserv); | |
187 | ||
188 | /* Free client list itself */ | |
189 | if (apiserver_list) | |
6a154c88 | 190 | list_delete(&apiserver_list); |
d62a17ae | 191 | |
192 | /* Free wildcard list */ | |
193 | /* XXX */ | |
2d33f157 | 194 | } |
195 | ||
d7c0a89a QY |
196 | static struct ospf_apiserver *lookup_apiserver(uint8_t lsa_type, |
197 | uint8_t opaque_type) | |
2d33f157 | 198 | { |
d62a17ae | 199 | struct listnode *n1, *n2; |
200 | struct registered_opaque_type *r; | |
201 | struct ospf_apiserver *apiserv, *found = NULL; | |
202 | ||
203 | /* XXX: this approaches O(n**2) */ | |
204 | for (ALL_LIST_ELEMENTS_RO(apiserver_list, n1, apiserv)) { | |
205 | for (ALL_LIST_ELEMENTS_RO(apiserv->opaque_types, n2, r)) | |
206 | if (r->lsa_type == lsa_type | |
207 | && r->opaque_type == opaque_type) { | |
208 | found = apiserv; | |
209 | goto out; | |
210 | } | |
211 | } | |
2d33f157 | 212 | out: |
d62a17ae | 213 | return found; |
2d33f157 | 214 | } |
215 | ||
d62a17ae | 216 | static struct ospf_apiserver *lookup_apiserver_by_lsa(struct ospf_lsa *lsa) |
2d33f157 | 217 | { |
d62a17ae | 218 | struct lsa_header *lsah = lsa->data; |
219 | struct ospf_apiserver *found = NULL; | |
220 | ||
221 | if (IS_OPAQUE_LSA(lsah->type)) { | |
222 | found = lookup_apiserver( | |
223 | lsah->type, GET_OPAQUE_TYPE(ntohl(lsah->id.s_addr))); | |
224 | } | |
225 | return found; | |
2d33f157 | 226 | } |
227 | ||
228 | /* ----------------------------------------------------------- | |
78dfa0c7 | 229 | * Following are functions to manage client connections. |
2d33f157 | 230 | * ----------------------------------------------------------- |
231 | */ | |
d62a17ae | 232 | static int ospf_apiserver_new_lsa_hook(struct ospf_lsa *lsa) |
2d33f157 | 233 | { |
d62a17ae | 234 | if (IS_DEBUG_OSPF_EVENT) |
235 | zlog_debug("API: Put LSA(%p)[%s] into reserve, total=%ld", | |
236 | (void *)lsa, dump_lsa_key(lsa), lsa->lsdb->total); | |
237 | return 0; | |
2d33f157 | 238 | } |
239 | ||
d62a17ae | 240 | static int ospf_apiserver_del_lsa_hook(struct ospf_lsa *lsa) |
2d33f157 | 241 | { |
d62a17ae | 242 | if (IS_DEBUG_OSPF_EVENT) |
243 | zlog_debug("API: Get LSA(%p)[%s] from reserve, total=%ld", | |
244 | (void *)lsa, dump_lsa_key(lsa), lsa->lsdb->total); | |
245 | return 0; | |
2d33f157 | 246 | } |
247 | ||
248 | /* Allocate new connection structure. */ | |
d62a17ae | 249 | struct ospf_apiserver *ospf_apiserver_new(int fd_sync, int fd_async) |
2d33f157 | 250 | { |
d62a17ae | 251 | struct ospf_apiserver *new = |
29a1a53d | 252 | XMALLOC(MTYPE_APISERVER, sizeof(struct ospf_apiserver)); |
2d33f157 | 253 | |
29a1a53d | 254 | new->filter = XMALLOC(MTYPE_APISERVER_MSGFILTER, |
d62a17ae | 255 | sizeof(struct lsa_filter_type)); |
2d33f157 | 256 | |
d62a17ae | 257 | new->fd_sync = fd_sync; |
258 | new->fd_async = fd_async; | |
2d33f157 | 259 | |
d62a17ae | 260 | /* list of registered opaque types that application uses */ |
261 | new->opaque_types = list_new(); | |
2d33f157 | 262 | |
d62a17ae | 263 | /* Initialize temporary strage for LSA instances to be refreshed. */ |
264 | memset(&new->reserve, 0, sizeof(struct ospf_lsdb)); | |
265 | ospf_lsdb_init(&new->reserve); | |
2d33f157 | 266 | |
d62a17ae | 267 | new->reserve.new_lsa_hook = ospf_apiserver_new_lsa_hook; /* debug */ |
268 | new->reserve.del_lsa_hook = ospf_apiserver_del_lsa_hook; /* debug */ | |
2d33f157 | 269 | |
d62a17ae | 270 | new->out_sync_fifo = msg_fifo_new(); |
271 | new->out_async_fifo = msg_fifo_new(); | |
272 | new->t_sync_read = NULL; | |
2d33f157 | 273 | #ifdef USE_ASYNC_READ |
d62a17ae | 274 | new->t_async_read = NULL; |
2d33f157 | 275 | #endif /* USE_ASYNC_READ */ |
d62a17ae | 276 | new->t_sync_write = NULL; |
277 | new->t_async_write = NULL; | |
2d33f157 | 278 | |
d62a17ae | 279 | new->filter->typemask = 0; /* filter all LSAs */ |
280 | new->filter->origin = ANY_ORIGIN; | |
281 | new->filter->num_areas = 0; | |
2d33f157 | 282 | |
d62a17ae | 283 | return new; |
2d33f157 | 284 | } |
285 | ||
14416b1f | 286 | void ospf_apiserver_event(enum ospf_apiserver_event event, int fd, |
d62a17ae | 287 | struct ospf_apiserver *apiserv) |
2d33f157 | 288 | { |
d62a17ae | 289 | switch (event) { |
290 | case OSPF_APISERVER_ACCEPT: | |
291 | (void)thread_add_read(master, ospf_apiserver_accept, apiserv, | |
292 | fd, NULL); | |
293 | break; | |
294 | case OSPF_APISERVER_SYNC_READ: | |
295 | apiserv->t_sync_read = NULL; | |
296 | thread_add_read(master, ospf_apiserver_read, apiserv, fd, | |
297 | &apiserv->t_sync_read); | |
298 | break; | |
2d33f157 | 299 | #ifdef USE_ASYNC_READ |
d62a17ae | 300 | case OSPF_APISERVER_ASYNC_READ: |
301 | apiserv->t_async_read = NULL; | |
302 | thread_add_read(master, ospf_apiserver_read, apiserv, fd, | |
303 | &apiserv->t_async_read); | |
304 | break; | |
2d33f157 | 305 | #endif /* USE_ASYNC_READ */ |
d62a17ae | 306 | case OSPF_APISERVER_SYNC_WRITE: |
307 | thread_add_write(master, ospf_apiserver_sync_write, apiserv, fd, | |
308 | &apiserv->t_sync_write); | |
309 | break; | |
310 | case OSPF_APISERVER_ASYNC_WRITE: | |
311 | thread_add_write(master, ospf_apiserver_async_write, apiserv, | |
312 | fd, &apiserv->t_async_write); | |
313 | break; | |
314 | } | |
2d33f157 | 315 | } |
316 | ||
317 | /* Free instance. First unregister all opaque types used by | |
d62a17ae | 318 | application, flush opaque LSAs injected by application |
2d33f157 | 319 | from network and close connection. */ |
d62a17ae | 320 | void ospf_apiserver_free(struct ospf_apiserver *apiserv) |
2d33f157 | 321 | { |
d62a17ae | 322 | struct listnode *node; |
2d33f157 | 323 | |
d62a17ae | 324 | /* Cancel read and write threads. */ |
bc1f09de | 325 | THREAD_OFF(apiserv->t_sync_read); |
2d33f157 | 326 | #ifdef USE_ASYNC_READ |
bc1f09de | 327 | THREAD_OFF(apiserv->t_async_read); |
2d33f157 | 328 | #endif /* USE_ASYNC_READ */ |
bc1f09de DS |
329 | THREAD_OFF(apiserv->t_sync_write); |
330 | THREAD_OFF(apiserv->t_async_write); | |
2d33f157 | 331 | |
d62a17ae | 332 | /* Unregister all opaque types that application registered |
333 | and flush opaque LSAs if still in LSDB. */ | |
2d33f157 | 334 | |
d62a17ae | 335 | while ((node = listhead(apiserv->opaque_types)) != NULL) { |
336 | struct registered_opaque_type *regtype = listgetdata(node); | |
2d33f157 | 337 | |
d62a17ae | 338 | ospf_apiserver_unregister_opaque_type( |
339 | apiserv, regtype->lsa_type, regtype->opaque_type); | |
340 | } | |
2d33f157 | 341 | |
d62a17ae | 342 | /* Close connections to OSPFd. */ |
343 | if (apiserv->fd_sync > 0) { | |
344 | close(apiserv->fd_sync); | |
345 | } | |
2d33f157 | 346 | |
d62a17ae | 347 | if (apiserv->fd_async > 0) { |
348 | close(apiserv->fd_async); | |
349 | } | |
2d33f157 | 350 | |
d62a17ae | 351 | /* Free fifos */ |
352 | msg_fifo_free(apiserv->out_sync_fifo); | |
353 | msg_fifo_free(apiserv->out_async_fifo); | |
2d33f157 | 354 | |
d62a17ae | 355 | /* Clear temporary strage for LSA instances to be refreshed. */ |
356 | ospf_lsdb_delete_all(&apiserv->reserve); | |
357 | ospf_lsdb_cleanup(&apiserv->reserve); | |
2d33f157 | 358 | |
d62a17ae | 359 | /* Remove from the list of active clients. */ |
360 | listnode_delete(apiserver_list, apiserv); | |
2d33f157 | 361 | |
d62a17ae | 362 | if (IS_DEBUG_OSPF_EVENT) |
363 | zlog_debug("API: Delete apiserv(%p), total#(%d)", | |
364 | (void *)apiserv, apiserver_list->count); | |
2d33f157 | 365 | |
d62a17ae | 366 | /* And free instance. */ |
29a1a53d | 367 | XFREE(MTYPE_APISERVER, apiserv); |
2d33f157 | 368 | } |
369 | ||
cc9f21da | 370 | void ospf_apiserver_read(struct thread *thread) |
2d33f157 | 371 | { |
d62a17ae | 372 | struct ospf_apiserver *apiserv; |
373 | struct msg *msg; | |
374 | int fd; | |
14416b1f | 375 | enum ospf_apiserver_event event; |
d62a17ae | 376 | |
377 | apiserv = THREAD_ARG(thread); | |
378 | fd = THREAD_FD(thread); | |
379 | ||
380 | if (fd == apiserv->fd_sync) { | |
381 | event = OSPF_APISERVER_SYNC_READ; | |
382 | apiserv->t_sync_read = NULL; | |
383 | ||
384 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 385 | zlog_debug("API: %s: Peer: %pI4/%u", __func__, |
96b663a3 | 386 | &apiserv->peer_sync.sin_addr, |
d62a17ae | 387 | ntohs(apiserv->peer_sync.sin_port)); |
388 | } | |
2d33f157 | 389 | #ifdef USE_ASYNC_READ |
d62a17ae | 390 | else if (fd == apiserv->fd_async) { |
391 | event = OSPF_APISERVER_ASYNC_READ; | |
392 | apiserv->t_async_read = NULL; | |
393 | ||
394 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 395 | zlog_debug("API: %s: Peer: %pI4/%u", __func__, |
96b663a3 | 396 | &apiserv->peer_async.sin_addr, |
d62a17ae | 397 | ntohs(apiserv->peer_async.sin_port)); |
398 | } | |
2d33f157 | 399 | #endif /* USE_ASYNC_READ */ |
d62a17ae | 400 | else { |
4adc415e | 401 | zlog_warn("%s: Unknown fd(%d)", __func__, fd); |
d62a17ae | 402 | ospf_apiserver_free(apiserv); |
cc9f21da | 403 | return; |
d62a17ae | 404 | } |
2d33f157 | 405 | |
d62a17ae | 406 | /* Read message from fd. */ |
407 | msg = msg_read(fd); | |
408 | if (msg == NULL) { | |
4adc415e | 409 | zlog_warn("%s: read failed on fd=%d, closing connection", |
410 | __func__, fd); | |
2d33f157 | 411 | |
d62a17ae | 412 | /* Perform cleanup. */ |
413 | ospf_apiserver_free(apiserv); | |
cc9f21da | 414 | return; |
d62a17ae | 415 | } |
2d33f157 | 416 | |
d62a17ae | 417 | if (IS_DEBUG_OSPF_EVENT) |
418 | msg_print(msg); | |
2d33f157 | 419 | |
d62a17ae | 420 | /* Dispatch to corresponding message handler. */ |
cc9f21da | 421 | ospf_apiserver_handle_msg(apiserv, msg); |
2d33f157 | 422 | |
d62a17ae | 423 | /* Prepare for next message, add read thread. */ |
424 | ospf_apiserver_event(event, fd, apiserv); | |
2d33f157 | 425 | |
d62a17ae | 426 | msg_free(msg); |
2d33f157 | 427 | } |
428 | ||
cc9f21da | 429 | void ospf_apiserver_sync_write(struct thread *thread) |
2d33f157 | 430 | { |
d62a17ae | 431 | struct ospf_apiserver *apiserv; |
432 | struct msg *msg; | |
433 | int fd; | |
434 | int rc = -1; | |
435 | ||
436 | apiserv = THREAD_ARG(thread); | |
437 | assert(apiserv); | |
438 | fd = THREAD_FD(thread); | |
439 | ||
440 | apiserv->t_sync_write = NULL; | |
441 | ||
442 | /* Sanity check */ | |
443 | if (fd != apiserv->fd_sync) { | |
4adc415e | 444 | zlog_warn("%s: Unknown fd=%d", __func__, fd); |
d62a17ae | 445 | goto out; |
446 | } | |
447 | ||
448 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 449 | zlog_debug("API: %s: Peer: %pI4/%u", __func__, |
96b663a3 | 450 | &apiserv->peer_sync.sin_addr, |
d62a17ae | 451 | ntohs(apiserv->peer_sync.sin_port)); |
452 | ||
453 | /* Check whether there is really a message in the fifo. */ | |
454 | msg = msg_fifo_pop(apiserv->out_sync_fifo); | |
455 | if (!msg) { | |
4adc415e | 456 | zlog_warn("API: %s: No message in Sync-FIFO?", __func__); |
cc9f21da | 457 | return; |
d62a17ae | 458 | } |
459 | ||
460 | if (IS_DEBUG_OSPF_EVENT) | |
461 | msg_print(msg); | |
462 | ||
463 | rc = msg_write(fd, msg); | |
464 | ||
465 | /* Once a message is dequeued, it should be freed anyway. */ | |
466 | msg_free(msg); | |
467 | ||
468 | if (rc < 0) { | |
4adc415e | 469 | zlog_warn("%s: write failed on fd=%d", __func__, fd); |
d62a17ae | 470 | goto out; |
471 | } | |
472 | ||
473 | ||
474 | /* If more messages are in sync message fifo, schedule write thread. */ | |
475 | if (msg_fifo_head(apiserv->out_sync_fifo)) { | |
476 | ospf_apiserver_event(OSPF_APISERVER_SYNC_WRITE, | |
477 | apiserv->fd_sync, apiserv); | |
478 | } | |
479 | ||
480 | out: | |
481 | ||
482 | if (rc < 0) { | |
483 | /* Perform cleanup and disconnect with peer */ | |
484 | ospf_apiserver_free(apiserv); | |
485 | } | |
2d33f157 | 486 | } |
487 | ||
488 | ||
cc9f21da | 489 | void ospf_apiserver_async_write(struct thread *thread) |
2d33f157 | 490 | { |
d62a17ae | 491 | struct ospf_apiserver *apiserv; |
492 | struct msg *msg; | |
493 | int fd; | |
494 | int rc = -1; | |
495 | ||
496 | apiserv = THREAD_ARG(thread); | |
497 | assert(apiserv); | |
498 | fd = THREAD_FD(thread); | |
499 | ||
500 | apiserv->t_async_write = NULL; | |
501 | ||
502 | /* Sanity check */ | |
503 | if (fd != apiserv->fd_async) { | |
4adc415e | 504 | zlog_warn("%s: Unknown fd=%d", __func__, fd); |
d62a17ae | 505 | goto out; |
506 | } | |
507 | ||
508 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 509 | zlog_debug("API: %s: Peer: %pI4/%u", __func__, |
96b663a3 | 510 | &apiserv->peer_async.sin_addr, |
d62a17ae | 511 | ntohs(apiserv->peer_async.sin_port)); |
512 | ||
513 | /* Check whether there is really a message in the fifo. */ | |
514 | msg = msg_fifo_pop(apiserv->out_async_fifo); | |
515 | if (!msg) { | |
4adc415e | 516 | zlog_warn("API: %s: No message in Async-FIFO?", __func__); |
cc9f21da | 517 | return; |
d62a17ae | 518 | } |
519 | ||
520 | if (IS_DEBUG_OSPF_EVENT) | |
521 | msg_print(msg); | |
522 | ||
523 | rc = msg_write(fd, msg); | |
524 | ||
525 | /* Once a message is dequeued, it should be freed anyway. */ | |
526 | msg_free(msg); | |
527 | ||
528 | if (rc < 0) { | |
4adc415e | 529 | zlog_warn("%s: write failed on fd=%d", __func__, fd); |
d62a17ae | 530 | goto out; |
531 | } | |
532 | ||
533 | ||
534 | /* If more messages are in async message fifo, schedule write thread. */ | |
535 | if (msg_fifo_head(apiserv->out_async_fifo)) { | |
536 | ospf_apiserver_event(OSPF_APISERVER_ASYNC_WRITE, | |
537 | apiserv->fd_async, apiserv); | |
538 | } | |
539 | ||
540 | out: | |
541 | ||
542 | if (rc < 0) { | |
543 | /* Perform cleanup and disconnect with peer */ | |
544 | ospf_apiserver_free(apiserv); | |
545 | } | |
2d33f157 | 546 | } |
547 | ||
548 | ||
d62a17ae | 549 | int ospf_apiserver_serv_sock_family(unsigned short port, int family) |
2d33f157 | 550 | { |
d62a17ae | 551 | union sockunion su; |
552 | int accept_sock; | |
553 | int rc; | |
554 | ||
555 | memset(&su, 0, sizeof(union sockunion)); | |
556 | su.sa.sa_family = family; | |
557 | ||
558 | /* Make new socket */ | |
559 | accept_sock = sockunion_stream_socket(&su); | |
560 | if (accept_sock < 0) | |
561 | return accept_sock; | |
562 | ||
563 | /* This is a server, so reuse address and port */ | |
564 | sockopt_reuseaddr(accept_sock); | |
565 | sockopt_reuseport(accept_sock); | |
566 | ||
567 | /* Bind socket to address and given port. */ | |
568 | rc = sockunion_bind(accept_sock, &su, port, NULL); | |
569 | if (rc < 0) { | |
570 | close(accept_sock); /* Close socket */ | |
571 | return rc; | |
572 | } | |
573 | ||
574 | /* Listen socket under queue length 3. */ | |
575 | rc = listen(accept_sock, 3); | |
576 | if (rc < 0) { | |
4adc415e | 577 | zlog_warn("%s: listen: %s", __func__, safe_strerror(errno)); |
d62a17ae | 578 | close(accept_sock); /* Close socket */ |
579 | return rc; | |
580 | } | |
581 | return accept_sock; | |
2d33f157 | 582 | } |
583 | ||
584 | ||
585 | /* Accept connection request from external applications. For each | |
586 | accepted connection allocate own connection instance. */ | |
cc9f21da | 587 | void ospf_apiserver_accept(struct thread *thread) |
2d33f157 | 588 | { |
d62a17ae | 589 | int accept_sock; |
590 | int new_sync_sock; | |
591 | int new_async_sock; | |
592 | union sockunion su; | |
593 | struct ospf_apiserver *apiserv; | |
594 | struct sockaddr_in peer_async; | |
595 | struct sockaddr_in peer_sync; | |
596 | unsigned int peerlen; | |
597 | int ret; | |
598 | ||
599 | /* THREAD_ARG (thread) is NULL */ | |
600 | accept_sock = THREAD_FD(thread); | |
601 | ||
602 | /* Keep hearing on socket for further connections. */ | |
603 | ospf_apiserver_event(OSPF_APISERVER_ACCEPT, accept_sock, NULL); | |
604 | ||
605 | memset(&su, 0, sizeof(union sockunion)); | |
606 | /* Accept connection for synchronous messages */ | |
607 | new_sync_sock = sockunion_accept(accept_sock, &su); | |
608 | if (new_sync_sock < 0) { | |
4adc415e | 609 | zlog_warn("%s: accept: %s", __func__, safe_strerror(errno)); |
cc9f21da | 610 | return; |
d62a17ae | 611 | } |
612 | ||
613 | /* Get port address and port number of peer to make reverse connection. | |
614 | The reverse channel uses the port number of the peer port+1. */ | |
615 | ||
6006b807 | 616 | memset(&peer_sync, 0, sizeof(peer_sync)); |
d62a17ae | 617 | peerlen = sizeof(struct sockaddr_in); |
618 | ||
619 | ret = getpeername(new_sync_sock, (struct sockaddr *)&peer_sync, | |
620 | &peerlen); | |
621 | if (ret < 0) { | |
4adc415e | 622 | zlog_warn("%s: getpeername: %s", __func__, |
d62a17ae | 623 | safe_strerror(errno)); |
624 | close(new_sync_sock); | |
cc9f21da | 625 | return; |
d62a17ae | 626 | } |
627 | ||
628 | if (IS_DEBUG_OSPF_EVENT) | |
4adc415e | 629 | zlog_debug("API: %s: New peer: %pI4/%u", __func__, |
630 | &peer_sync.sin_addr, ntohs(peer_sync.sin_port)); | |
d62a17ae | 631 | |
632 | /* Create new socket for asynchronous messages. */ | |
633 | peer_async = peer_sync; | |
634 | peer_async.sin_port = htons(ntohs(peer_sync.sin_port) + 1); | |
635 | ||
636 | /* Check if remote port number to make reverse connection is valid one. | |
637 | */ | |
638 | if (ntohs(peer_async.sin_port) == ospf_apiserver_getport()) { | |
4adc415e | 639 | zlog_warn("API: %s: Peer(%pI4/%u): Invalid async port number?", |
640 | __func__, &peer_async.sin_addr, | |
641 | ntohs(peer_async.sin_port)); | |
d62a17ae | 642 | close(new_sync_sock); |
cc9f21da | 643 | return; |
d62a17ae | 644 | } |
645 | ||
646 | new_async_sock = socket(AF_INET, SOCK_STREAM, 0); | |
647 | if (new_async_sock < 0) { | |
4adc415e | 648 | zlog_warn("%s: socket: %s", __func__, safe_strerror(errno)); |
d62a17ae | 649 | close(new_sync_sock); |
cc9f21da | 650 | return; |
d62a17ae | 651 | } |
652 | ||
653 | ret = connect(new_async_sock, (struct sockaddr *)&peer_async, | |
654 | sizeof(struct sockaddr_in)); | |
655 | ||
656 | if (ret < 0) { | |
4adc415e | 657 | zlog_warn("%s: connect: %s", __func__, safe_strerror(errno)); |
d62a17ae | 658 | close(new_sync_sock); |
659 | close(new_async_sock); | |
cc9f21da | 660 | return; |
d62a17ae | 661 | } |
2d33f157 | 662 | |
663 | #ifdef USE_ASYNC_READ | |
d62a17ae | 664 | #else /* USE_ASYNC_READ */ |
665 | /* Make the asynchronous channel write-only. */ | |
666 | ret = shutdown(new_async_sock, SHUT_RD); | |
667 | if (ret < 0) { | |
4adc415e | 668 | zlog_warn("%s: shutdown: %s", __func__, safe_strerror(errno)); |
d62a17ae | 669 | close(new_sync_sock); |
670 | close(new_async_sock); | |
cc9f21da | 671 | return; |
d62a17ae | 672 | } |
2d33f157 | 673 | #endif /* USE_ASYNC_READ */ |
674 | ||
d62a17ae | 675 | /* Allocate new server-side connection structure */ |
676 | apiserv = ospf_apiserver_new(new_sync_sock, new_async_sock); | |
2d33f157 | 677 | |
d62a17ae | 678 | /* Add to active connection list */ |
679 | listnode_add(apiserver_list, apiserv); | |
680 | apiserv->peer_sync = peer_sync; | |
681 | apiserv->peer_async = peer_async; | |
2d33f157 | 682 | |
d62a17ae | 683 | /* And add read threads for new connection */ |
684 | ospf_apiserver_event(OSPF_APISERVER_SYNC_READ, new_sync_sock, apiserv); | |
2d33f157 | 685 | #ifdef USE_ASYNC_READ |
d62a17ae | 686 | ospf_apiserver_event(OSPF_APISERVER_ASYNC_READ, new_async_sock, |
687 | apiserv); | |
2d33f157 | 688 | #endif /* USE_ASYNC_READ */ |
689 | ||
d62a17ae | 690 | if (IS_DEBUG_OSPF_EVENT) |
691 | zlog_debug("API: New apiserv(%p), total#(%d)", (void *)apiserv, | |
692 | apiserver_list->count); | |
2d33f157 | 693 | } |
694 | ||
695 | ||
696 | /* ----------------------------------------------------------- | |
697 | * Send reply with return code to client application | |
698 | * ----------------------------------------------------------- | |
699 | */ | |
700 | ||
d62a17ae | 701 | static int ospf_apiserver_send_msg(struct ospf_apiserver *apiserv, |
702 | struct msg *msg) | |
2d33f157 | 703 | { |
d62a17ae | 704 | struct msg_fifo *fifo; |
705 | struct msg *msg2; | |
14416b1f | 706 | enum ospf_apiserver_event event; |
d62a17ae | 707 | int fd; |
708 | ||
709 | switch (msg->hdr.msgtype) { | |
710 | case MSG_REPLY: | |
711 | fifo = apiserv->out_sync_fifo; | |
712 | fd = apiserv->fd_sync; | |
713 | event = OSPF_APISERVER_SYNC_WRITE; | |
714 | break; | |
715 | case MSG_READY_NOTIFY: | |
716 | case MSG_LSA_UPDATE_NOTIFY: | |
717 | case MSG_LSA_DELETE_NOTIFY: | |
718 | case MSG_NEW_IF: | |
719 | case MSG_DEL_IF: | |
720 | case MSG_ISM_CHANGE: | |
721 | case MSG_NSM_CHANGE: | |
149491af | 722 | case MSG_REACHABLE_CHANGE: |
44038c7a | 723 | case MSG_ROUTER_ID_CHANGE: |
d62a17ae | 724 | fifo = apiserv->out_async_fifo; |
725 | fd = apiserv->fd_async; | |
726 | event = OSPF_APISERVER_ASYNC_WRITE; | |
727 | break; | |
728 | default: | |
4adc415e | 729 | zlog_warn("%s: Unknown message type %d", __func__, |
d62a17ae | 730 | msg->hdr.msgtype); |
731 | return -1; | |
732 | } | |
733 | ||
734 | /* Make a copy of the message and put in the fifo. Once the fifo | |
735 | gets drained by the write thread, the message will be freed. */ | |
736 | /* NB: Given "msg" is untouched in this function. */ | |
737 | msg2 = msg_dup(msg); | |
738 | ||
739 | /* Enqueue message into corresponding fifo queue */ | |
740 | msg_fifo_push(fifo, msg2); | |
741 | ||
742 | /* Schedule write thread */ | |
743 | ospf_apiserver_event(event, fd, apiserv); | |
744 | return 0; | |
2d33f157 | 745 | } |
746 | ||
d7c0a89a QY |
747 | int ospf_apiserver_send_reply(struct ospf_apiserver *apiserv, uint32_t seqnr, |
748 | uint8_t rc) | |
2d33f157 | 749 | { |
d62a17ae | 750 | struct msg *msg = new_msg_reply(seqnr, rc); |
751 | int ret; | |
2d33f157 | 752 | |
d62a17ae | 753 | if (!msg) { |
4adc415e | 754 | zlog_warn("%s: msg_new failed", __func__); |
2d33f157 | 755 | #ifdef NOTYET |
d62a17ae | 756 | /* Cannot allocate new message. What should we do? */ |
757 | ospf_apiserver_free(apiserv); | |
2d33f157 | 758 | #endif |
d62a17ae | 759 | return -1; |
760 | } | |
2d33f157 | 761 | |
d62a17ae | 762 | ret = ospf_apiserver_send_msg(apiserv, msg); |
763 | msg_free(msg); | |
764 | return ret; | |
2d33f157 | 765 | } |
766 | ||
767 | ||
768 | /* ----------------------------------------------------------- | |
769 | * Generic message dispatching handler function | |
770 | * ----------------------------------------------------------- | |
771 | */ | |
772 | ||
d62a17ae | 773 | int ospf_apiserver_handle_msg(struct ospf_apiserver *apiserv, struct msg *msg) |
2d33f157 | 774 | { |
d62a17ae | 775 | int rc; |
776 | ||
777 | /* Call corresponding message handler function. */ | |
778 | switch (msg->hdr.msgtype) { | |
779 | case MSG_REGISTER_OPAQUETYPE: | |
780 | rc = ospf_apiserver_handle_register_opaque_type(apiserv, msg); | |
781 | break; | |
782 | case MSG_UNREGISTER_OPAQUETYPE: | |
783 | rc = ospf_apiserver_handle_unregister_opaque_type(apiserv, msg); | |
784 | break; | |
785 | case MSG_REGISTER_EVENT: | |
786 | rc = ospf_apiserver_handle_register_event(apiserv, msg); | |
787 | break; | |
788 | case MSG_SYNC_LSDB: | |
789 | rc = ospf_apiserver_handle_sync_lsdb(apiserv, msg); | |
790 | break; | |
791 | case MSG_ORIGINATE_REQUEST: | |
792 | rc = ospf_apiserver_handle_originate_request(apiserv, msg); | |
793 | break; | |
794 | case MSG_DELETE_REQUEST: | |
795 | rc = ospf_apiserver_handle_delete_request(apiserv, msg); | |
796 | break; | |
149491af CH |
797 | case MSG_SYNC_REACHABLE: |
798 | rc = ospf_apiserver_handle_sync_reachable(apiserv, msg); | |
799 | break; | |
97355a6d CH |
800 | case MSG_SYNC_ISM: |
801 | rc = ospf_apiserver_handle_sync_ism(apiserv, msg); | |
802 | break; | |
803 | case MSG_SYNC_NSM: | |
804 | rc = ospf_apiserver_handle_sync_nsm(apiserv, msg); | |
805 | break; | |
44038c7a CH |
806 | case MSG_SYNC_ROUTER_ID: |
807 | rc = ospf_apiserver_handle_sync_router_id(apiserv, msg); | |
808 | break; | |
d62a17ae | 809 | default: |
4adc415e | 810 | zlog_warn("%s: Unknown message type: %d", __func__, |
d62a17ae | 811 | msg->hdr.msgtype); |
812 | rc = -1; | |
813 | } | |
814 | return rc; | |
2d33f157 | 815 | } |
816 | ||
817 | ||
818 | /* ----------------------------------------------------------- | |
819 | * Following are functions for opaque type registration | |
820 | * ----------------------------------------------------------- | |
821 | */ | |
822 | ||
d62a17ae | 823 | int ospf_apiserver_register_opaque_type(struct ospf_apiserver *apiserv, |
d7c0a89a | 824 | uint8_t lsa_type, uint8_t opaque_type) |
2d33f157 | 825 | { |
d62a17ae | 826 | struct registered_opaque_type *regtype; |
827 | int (*originator_func)(void *arg); | |
828 | int rc; | |
829 | ||
830 | switch (lsa_type) { | |
831 | case OSPF_OPAQUE_LINK_LSA: | |
832 | originator_func = ospf_apiserver_lsa9_originator; | |
833 | break; | |
834 | case OSPF_OPAQUE_AREA_LSA: | |
835 | originator_func = ospf_apiserver_lsa10_originator; | |
836 | break; | |
837 | case OSPF_OPAQUE_AS_LSA: | |
838 | originator_func = ospf_apiserver_lsa11_originator; | |
839 | break; | |
840 | default: | |
4adc415e | 841 | zlog_warn("%s: lsa_type(%d)", __func__, lsa_type); |
d62a17ae | 842 | return OSPF_API_ILLEGALLSATYPE; |
843 | } | |
844 | ||
845 | ||
846 | /* Register opaque function table */ | |
847 | /* NB: Duplicated registration will be detected inside the function. */ | |
848 | rc = ospf_register_opaque_functab( | |
849 | lsa_type, opaque_type, NULL, /* ospf_apiserver_new_if */ | |
850 | NULL, /* ospf_apiserver_del_if */ | |
851 | NULL, /* ospf_apiserver_ism_change */ | |
852 | NULL, /* ospf_apiserver_nsm_change */ | |
853 | NULL, NULL, NULL, ospf_apiserver_show_info, originator_func, | |
854 | ospf_apiserver_lsa_refresher, | |
855 | NULL, /* ospf_apiserver_lsa_update */ | |
856 | NULL /* ospf_apiserver_lsa_delete */); | |
857 | ||
858 | if (rc != 0) { | |
cf444bcf | 859 | flog_warn(EC_OSPF_OPAQUE_REGISTRATION, |
85c9b439 | 860 | "Failed to register opaque type [%d/%d]", lsa_type, |
d62a17ae | 861 | opaque_type); |
862 | return OSPF_API_OPAQUETYPEINUSE; | |
863 | } | |
864 | ||
865 | /* Remember the opaque type that application registers so when | |
866 | connection shuts down, we can flush all LSAs of this opaque | |
867 | type. */ | |
868 | ||
29a1a53d DS |
869 | regtype = |
870 | XCALLOC(MTYPE_APISERVER, sizeof(struct registered_opaque_type)); | |
d62a17ae | 871 | regtype->lsa_type = lsa_type; |
872 | regtype->opaque_type = opaque_type; | |
873 | ||
874 | /* Add to list of registered opaque types */ | |
875 | listnode_add(apiserv->opaque_types, regtype); | |
876 | ||
877 | if (IS_DEBUG_OSPF_EVENT) | |
878 | zlog_debug( | |
3efd0893 | 879 | "API: Add LSA-type(%d)/Opaque-type(%d) into apiserv(%p), total#(%d)", |
d62a17ae | 880 | lsa_type, opaque_type, (void *)apiserv, |
881 | listcount(apiserv->opaque_types)); | |
882 | ||
883 | return 0; | |
2d33f157 | 884 | } |
885 | ||
d62a17ae | 886 | int ospf_apiserver_unregister_opaque_type(struct ospf_apiserver *apiserv, |
d7c0a89a | 887 | uint8_t lsa_type, uint8_t opaque_type) |
2d33f157 | 888 | { |
d62a17ae | 889 | struct listnode *node, *nnode; |
890 | struct registered_opaque_type *regtype; | |
2d33f157 | 891 | |
d62a17ae | 892 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node, nnode, regtype)) { |
893 | /* Check if we really registered this opaque type */ | |
894 | if (regtype->lsa_type == lsa_type | |
895 | && regtype->opaque_type == opaque_type) { | |
2d33f157 | 896 | |
d62a17ae | 897 | /* Yes, we registered this opaque type. Flush |
898 | all existing opaque LSAs of this type */ | |
2d33f157 | 899 | |
d62a17ae | 900 | ospf_apiserver_flush_opaque_lsa(apiserv, lsa_type, |
901 | opaque_type); | |
902 | ospf_delete_opaque_functab(lsa_type, opaque_type); | |
2d33f157 | 903 | |
d62a17ae | 904 | /* Remove from list of registered opaque types */ |
905 | listnode_delete(apiserv->opaque_types, regtype); | |
2d33f157 | 906 | |
d62a17ae | 907 | if (IS_DEBUG_OSPF_EVENT) |
908 | zlog_debug( | |
3efd0893 | 909 | "API: Del LSA-type(%d)/Opaque-type(%d) from apiserv(%p), total#(%d)", |
d62a17ae | 910 | lsa_type, opaque_type, (void *)apiserv, |
911 | listcount(apiserv->opaque_types)); | |
2d33f157 | 912 | |
d62a17ae | 913 | return 0; |
914 | } | |
2d33f157 | 915 | } |
2d33f157 | 916 | |
d62a17ae | 917 | /* Opaque type is not registered */ |
918 | zlog_warn("Failed to unregister opaque type [%d/%d]", lsa_type, | |
919 | opaque_type); | |
920 | return OSPF_API_OPAQUETYPENOTREGISTERED; | |
2d33f157 | 921 | } |
922 | ||
923 | ||
d62a17ae | 924 | static int apiserver_is_opaque_type_registered(struct ospf_apiserver *apiserv, |
d7c0a89a QY |
925 | uint8_t lsa_type, |
926 | uint8_t opaque_type) | |
2d33f157 | 927 | { |
d62a17ae | 928 | struct listnode *node, *nnode; |
929 | struct registered_opaque_type *regtype; | |
930 | ||
931 | /* XXX: how many types are there? if few, why not just a bitmap? */ | |
932 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node, nnode, regtype)) { | |
933 | /* Check if we really registered this opaque type */ | |
934 | if (regtype->lsa_type == lsa_type | |
935 | && regtype->opaque_type == opaque_type) { | |
936 | /* Yes registered */ | |
937 | return 1; | |
938 | } | |
939 | } | |
940 | /* Not registered */ | |
941 | return 0; | |
2d33f157 | 942 | } |
943 | ||
d62a17ae | 944 | int ospf_apiserver_handle_register_opaque_type(struct ospf_apiserver *apiserv, |
945 | struct msg *msg) | |
2d33f157 | 946 | { |
d62a17ae | 947 | struct msg_register_opaque_type *rmsg; |
d7c0a89a QY |
948 | uint8_t lsa_type; |
949 | uint8_t opaque_type; | |
d62a17ae | 950 | int rc = 0; |
951 | ||
952 | /* Extract parameters from register opaque type message */ | |
953 | rmsg = (struct msg_register_opaque_type *)STREAM_DATA(msg->s); | |
954 | ||
955 | lsa_type = rmsg->lsatype; | |
956 | opaque_type = rmsg->opaquetype; | |
957 | ||
958 | rc = ospf_apiserver_register_opaque_type(apiserv, lsa_type, | |
959 | opaque_type); | |
960 | ||
961 | /* Send a reply back to client including return code */ | |
962 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
963 | if (rc < 0) | |
964 | goto out; | |
965 | ||
966 | /* Now inform application about opaque types that are ready */ | |
967 | switch (lsa_type) { | |
968 | case OSPF_OPAQUE_LINK_LSA: | |
969 | ospf_apiserver_notify_ready_type9(apiserv); | |
970 | break; | |
971 | case OSPF_OPAQUE_AREA_LSA: | |
972 | ospf_apiserver_notify_ready_type10(apiserv); | |
973 | break; | |
974 | case OSPF_OPAQUE_AS_LSA: | |
975 | ospf_apiserver_notify_ready_type11(apiserv); | |
976 | break; | |
977 | } | |
2d33f157 | 978 | out: |
d62a17ae | 979 | return rc; |
2d33f157 | 980 | } |
981 | ||
982 | ||
983 | /* Notify specific client about all opaque types 9 that are ready. */ | |
d62a17ae | 984 | void ospf_apiserver_notify_ready_type9(struct ospf_apiserver *apiserv) |
2d33f157 | 985 | { |
d62a17ae | 986 | struct listnode *node, *nnode; |
987 | struct listnode *node2, *nnode2; | |
988 | struct ospf *ospf; | |
989 | struct ospf_interface *oi; | |
990 | struct registered_opaque_type *r; | |
991 | ||
b5a8894d | 992 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 993 | |
994 | for (ALL_LIST_ELEMENTS(ospf->oiflist, node, nnode, oi)) { | |
995 | /* Check if this interface is indeed ready for type 9 */ | |
996 | if (!ospf_apiserver_is_ready_type9(oi)) | |
997 | continue; | |
998 | ||
999 | /* Check for registered opaque type 9 types */ | |
1000 | /* XXX: loop-de-loop - optimise me */ | |
1001 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
1002 | r)) { | |
1003 | struct msg *msg; | |
1004 | ||
1005 | if (r->lsa_type == OSPF_OPAQUE_LINK_LSA) { | |
1006 | ||
1007 | /* Yes, this opaque type is ready */ | |
1008 | msg = new_msg_ready_notify( | |
1009 | 0, OSPF_OPAQUE_LINK_LSA, r->opaque_type, | |
1010 | oi->address->u.prefix4); | |
1011 | if (!msg) { | |
4adc415e | 1012 | zlog_warn("%s: msg_new failed", |
1013 | __func__); | |
2d33f157 | 1014 | #ifdef NOTYET |
d62a17ae | 1015 | /* Cannot allocate new message. What |
1016 | * should we do? */ | |
1017 | ospf_apiserver_free(apiserv); | |
2d33f157 | 1018 | #endif |
d62a17ae | 1019 | goto out; |
1020 | } | |
1021 | ospf_apiserver_send_msg(apiserv, msg); | |
1022 | msg_free(msg); | |
1023 | } | |
2d33f157 | 1024 | } |
2d33f157 | 1025 | } |
2d33f157 | 1026 | |
1027 | out: | |
d62a17ae | 1028 | return; |
2d33f157 | 1029 | } |
1030 | ||
1031 | ||
1032 | /* Notify specific client about all opaque types 10 that are ready. */ | |
d62a17ae | 1033 | void ospf_apiserver_notify_ready_type10(struct ospf_apiserver *apiserv) |
2d33f157 | 1034 | { |
d62a17ae | 1035 | struct listnode *node, *nnode; |
1036 | struct listnode *node2, *nnode2; | |
1037 | struct ospf *ospf; | |
1038 | struct ospf_area *area; | |
1039 | ||
b5a8894d | 1040 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1041 | |
1042 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) { | |
1043 | struct registered_opaque_type *r; | |
1044 | ||
1045 | if (!ospf_apiserver_is_ready_type10(area)) { | |
1046 | continue; | |
1047 | } | |
1048 | ||
1049 | /* Check for registered opaque type 10 types */ | |
1050 | /* XXX: loop in loop - optimise me */ | |
1051 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
1052 | r)) { | |
1053 | struct msg *msg; | |
1054 | ||
1055 | if (r->lsa_type == OSPF_OPAQUE_AREA_LSA) { | |
1056 | /* Yes, this opaque type is ready */ | |
1057 | msg = new_msg_ready_notify( | |
1058 | 0, OSPF_OPAQUE_AREA_LSA, r->opaque_type, | |
1059 | area->area_id); | |
1060 | if (!msg) { | |
4adc415e | 1061 | zlog_warn("%s: msg_new failed", |
1062 | __func__); | |
2d33f157 | 1063 | #ifdef NOTYET |
d62a17ae | 1064 | /* Cannot allocate new message. What |
1065 | * should we do? */ | |
1066 | ospf_apiserver_free(apiserv); | |
2d33f157 | 1067 | #endif |
d62a17ae | 1068 | goto out; |
1069 | } | |
1070 | ospf_apiserver_send_msg(apiserv, msg); | |
1071 | msg_free(msg); | |
1072 | } | |
2d33f157 | 1073 | } |
2d33f157 | 1074 | } |
2d33f157 | 1075 | |
1076 | out: | |
d62a17ae | 1077 | return; |
2d33f157 | 1078 | } |
1079 | ||
1080 | /* Notify specific client about all opaque types 11 that are ready */ | |
d62a17ae | 1081 | void ospf_apiserver_notify_ready_type11(struct ospf_apiserver *apiserv) |
2d33f157 | 1082 | { |
d62a17ae | 1083 | struct listnode *node, *nnode; |
1084 | struct ospf *ospf; | |
1085 | struct registered_opaque_type *r; | |
1086 | ||
b5a8894d | 1087 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1088 | |
1089 | /* Can type 11 be originated? */ | |
1090 | if (!ospf_apiserver_is_ready_type11(ospf)) | |
1091 | goto out; | |
1092 | ||
1093 | /* Check for registered opaque type 11 types */ | |
1094 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node, nnode, r)) { | |
1095 | struct msg *msg; | |
1096 | struct in_addr noarea_id = {.s_addr = 0L}; | |
1097 | ||
1098 | if (r->lsa_type == OSPF_OPAQUE_AS_LSA) { | |
1099 | /* Yes, this opaque type is ready */ | |
1100 | msg = new_msg_ready_notify(0, OSPF_OPAQUE_AS_LSA, | |
1101 | r->opaque_type, noarea_id); | |
1102 | ||
1103 | if (!msg) { | |
4adc415e | 1104 | zlog_warn("%s: msg_new failed", __func__); |
2d33f157 | 1105 | #ifdef NOTYET |
d62a17ae | 1106 | /* Cannot allocate new message. What should we |
1107 | * do? */ | |
1108 | ospf_apiserver_free(apiserv); | |
2d33f157 | 1109 | #endif |
d62a17ae | 1110 | goto out; |
1111 | } | |
1112 | ospf_apiserver_send_msg(apiserv, msg); | |
1113 | msg_free(msg); | |
1114 | } | |
2d33f157 | 1115 | } |
2d33f157 | 1116 | |
1117 | out: | |
d62a17ae | 1118 | return; |
2d33f157 | 1119 | } |
1120 | ||
d62a17ae | 1121 | int ospf_apiserver_handle_unregister_opaque_type(struct ospf_apiserver *apiserv, |
1122 | struct msg *msg) | |
2d33f157 | 1123 | { |
d62a17ae | 1124 | struct msg_unregister_opaque_type *umsg; |
d7c0a89a QY |
1125 | uint8_t ltype; |
1126 | uint8_t otype; | |
d62a17ae | 1127 | int rc = 0; |
2d33f157 | 1128 | |
d62a17ae | 1129 | /* Extract parameters from unregister opaque type message */ |
1130 | umsg = (struct msg_unregister_opaque_type *)STREAM_DATA(msg->s); | |
2d33f157 | 1131 | |
d62a17ae | 1132 | ltype = umsg->lsatype; |
1133 | otype = umsg->opaquetype; | |
2d33f157 | 1134 | |
d62a17ae | 1135 | rc = ospf_apiserver_unregister_opaque_type(apiserv, ltype, otype); |
2d33f157 | 1136 | |
d62a17ae | 1137 | /* Send a reply back to client including return code */ |
1138 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
2d33f157 | 1139 | |
d62a17ae | 1140 | return rc; |
2d33f157 | 1141 | } |
1142 | ||
1143 | ||
1144 | /* ----------------------------------------------------------- | |
1145 | * Following are functions for event (filter) registration. | |
1146 | * ----------------------------------------------------------- | |
1147 | */ | |
d62a17ae | 1148 | int ospf_apiserver_handle_register_event(struct ospf_apiserver *apiserv, |
1149 | struct msg *msg) | |
2d33f157 | 1150 | { |
d62a17ae | 1151 | struct msg_register_event *rmsg; |
1152 | int rc; | |
d7c0a89a | 1153 | uint32_t seqnum; |
8db278b5 | 1154 | size_t size; |
d62a17ae | 1155 | |
1156 | rmsg = (struct msg_register_event *)STREAM_DATA(msg->s); | |
1157 | ||
1158 | /* Get request sequence number */ | |
1159 | seqnum = msg_get_seq(msg); | |
1160 | ||
1161 | /* Free existing filter in apiserv. */ | |
29a1a53d | 1162 | XFREE(MTYPE_APISERVER_MSGFILTER, apiserv->filter); |
d62a17ae | 1163 | /* Alloc new space for filter. */ |
8db278b5 OD |
1164 | size = ntohs(msg->hdr.msglen); |
1165 | if (size < OSPF_MAX_LSA_SIZE) { | |
d62a17ae | 1166 | |
29a1a53d | 1167 | apiserv->filter = XMALLOC(MTYPE_APISERVER_MSGFILTER, size); |
0ce1ca80 | 1168 | |
8db278b5 OD |
1169 | /* copy it over. */ |
1170 | memcpy(apiserv->filter, &rmsg->filter, size); | |
1171 | rc = OSPF_API_OK; | |
1172 | } else | |
1173 | rc = OSPF_API_NOMEMORY; | |
0ce1ca80 | 1174 | |
d62a17ae | 1175 | /* Send a reply back to client with return code */ |
1176 | rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1177 | return rc; | |
2d33f157 | 1178 | } |
1179 | ||
1180 | ||
1181 | /* ----------------------------------------------------------- | |
78dfa0c7 | 1182 | * Following are functions for LSDB synchronization. |
2d33f157 | 1183 | * ----------------------------------------------------------- |
1184 | */ | |
1185 | ||
d62a17ae | 1186 | static int apiserver_sync_callback(struct ospf_lsa *lsa, void *p_arg, |
1187 | int int_arg) | |
2d33f157 | 1188 | { |
d62a17ae | 1189 | struct ospf_apiserver *apiserv; |
1190 | int seqnum; | |
1191 | struct msg *msg; | |
1192 | struct param_t { | |
1193 | struct ospf_apiserver *apiserv; | |
1194 | struct lsa_filter_type *filter; | |
1195 | } * param; | |
1196 | int rc = -1; | |
1197 | ||
1198 | /* Sanity check */ | |
1199 | assert(lsa->data); | |
1200 | assert(p_arg); | |
1201 | ||
1202 | param = (struct param_t *)p_arg; | |
1203 | apiserv = param->apiserv; | |
d7c0a89a | 1204 | seqnum = (uint32_t)int_arg; |
d62a17ae | 1205 | |
1206 | /* Check origin in filter. */ | |
1207 | if ((param->filter->origin == ANY_ORIGIN) | |
1208 | || (param->filter->origin == (lsa->flags & OSPF_LSA_SELF))) { | |
1209 | ||
1210 | /* Default area for AS-External and Opaque11 LSAs */ | |
1211 | struct in_addr area_id = {.s_addr = 0L}; | |
1212 | ||
1213 | /* Default interface for non Opaque9 LSAs */ | |
1214 | struct in_addr ifaddr = {.s_addr = 0L}; | |
1215 | ||
1216 | if (lsa->area) { | |
1217 | area_id = lsa->area->area_id; | |
1218 | } | |
1219 | if (lsa->data->type == OSPF_OPAQUE_LINK_LSA) { | |
1220 | ifaddr = lsa->oi->address->u.prefix4; | |
1221 | } | |
1222 | ||
1223 | msg = new_msg_lsa_change_notify( | |
1224 | MSG_LSA_UPDATE_NOTIFY, seqnum, ifaddr, area_id, | |
1225 | lsa->flags & OSPF_LSA_SELF, lsa->data); | |
1226 | if (!msg) { | |
4adc415e | 1227 | zlog_warn("%s: new_msg_update failed", __func__); |
2d33f157 | 1228 | #ifdef NOTYET |
9d303b37 DL |
1229 | /* Cannot allocate new message. What should we do? */ |
1230 | /* ospf_apiserver_free (apiserv);*/ /* Do nothing | |
1231 | here XXX | |
1232 | */ | |
2d33f157 | 1233 | #endif |
d62a17ae | 1234 | goto out; |
1235 | } | |
2d33f157 | 1236 | |
d62a17ae | 1237 | /* Send LSA */ |
1238 | ospf_apiserver_send_msg(apiserv, msg); | |
1239 | msg_free(msg); | |
1240 | } | |
1241 | rc = 0; | |
2d33f157 | 1242 | |
1243 | out: | |
d62a17ae | 1244 | return rc; |
2d33f157 | 1245 | } |
1246 | ||
d62a17ae | 1247 | int ospf_apiserver_handle_sync_lsdb(struct ospf_apiserver *apiserv, |
1248 | struct msg *msg) | |
2d33f157 | 1249 | { |
d62a17ae | 1250 | struct listnode *node, *nnode; |
d7c0a89a | 1251 | uint32_t seqnum; |
d62a17ae | 1252 | int rc = 0; |
1253 | struct msg_sync_lsdb *smsg; | |
1254 | struct ospf_apiserver_param_t { | |
1255 | struct ospf_apiserver *apiserv; | |
1256 | struct lsa_filter_type *filter; | |
1257 | } param; | |
d7c0a89a | 1258 | uint16_t mask; |
d62a17ae | 1259 | struct route_node *rn; |
1260 | struct ospf_lsa *lsa; | |
1261 | struct ospf *ospf; | |
1262 | struct ospf_area *area; | |
1263 | ||
b5a8894d | 1264 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1265 | |
1266 | /* Get request sequence number */ | |
1267 | seqnum = msg_get_seq(msg); | |
1268 | /* Set sync msg. */ | |
1269 | smsg = (struct msg_sync_lsdb *)STREAM_DATA(msg->s); | |
1270 | ||
1271 | /* Set parameter struct. */ | |
1272 | param.apiserv = apiserv; | |
1273 | param.filter = &smsg->filter; | |
1274 | ||
1275 | /* Remember mask. */ | |
1276 | mask = ntohs(smsg->filter.typemask); | |
1277 | ||
1278 | /* Iterate over all areas. */ | |
1279 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) { | |
1280 | int i; | |
d7c0a89a | 1281 | uint32_t *area_id = NULL; |
d62a17ae | 1282 | |
1283 | /* Compare area_id with area_ids in sync request. */ | |
1284 | if ((i = smsg->filter.num_areas) > 0) { | |
1285 | /* Let area_id point to the list of area IDs, | |
1286 | * which is at the end of smsg->filter. */ | |
d7c0a89a | 1287 | area_id = (uint32_t *)(&smsg->filter + 1); |
d62a17ae | 1288 | while (i) { |
1289 | if (*area_id == area->area_id.s_addr) { | |
1290 | break; | |
1291 | } | |
1292 | i--; | |
1293 | area_id++; | |
1294 | } | |
1295 | } else { | |
1296 | i = 1; | |
1297 | } | |
1298 | ||
1299 | /* If area was found, then i>0 here. */ | |
1300 | if (i) { | |
1301 | /* Check msg type. */ | |
1302 | if (mask & Power2[OSPF_ROUTER_LSA]) | |
996c9314 | 1303 | LSDB_LOOP (ROUTER_LSDB(area), rn, lsa) |
044506e7 DS |
1304 | apiserver_sync_callback( |
1305 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1306 | if (mask & Power2[OSPF_NETWORK_LSA]) |
996c9314 | 1307 | LSDB_LOOP (NETWORK_LSDB(area), rn, lsa) |
044506e7 DS |
1308 | apiserver_sync_callback( |
1309 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1310 | if (mask & Power2[OSPF_SUMMARY_LSA]) |
996c9314 | 1311 | LSDB_LOOP (SUMMARY_LSDB(area), rn, lsa) |
044506e7 DS |
1312 | apiserver_sync_callback( |
1313 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1314 | if (mask & Power2[OSPF_ASBR_SUMMARY_LSA]) |
996c9314 | 1315 | LSDB_LOOP (ASBR_SUMMARY_LSDB(area), rn, lsa) |
044506e7 DS |
1316 | apiserver_sync_callback( |
1317 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1318 | if (mask & Power2[OSPF_OPAQUE_LINK_LSA]) |
996c9314 | 1319 | LSDB_LOOP (OPAQUE_LINK_LSDB(area), rn, lsa) |
044506e7 DS |
1320 | apiserver_sync_callback( |
1321 | lsa, (void *)¶m, seqnum); | |
d62a17ae | 1322 | if (mask & Power2[OSPF_OPAQUE_AREA_LSA]) |
996c9314 | 1323 | LSDB_LOOP (OPAQUE_AREA_LSDB(area), rn, lsa) |
044506e7 DS |
1324 | apiserver_sync_callback( |
1325 | lsa, (void *)¶m, seqnum); | |
2d33f157 | 1326 | } |
d62a17ae | 1327 | } |
1328 | ||
1329 | /* For AS-external LSAs */ | |
1330 | if (ospf->lsdb) { | |
1331 | if (mask & Power2[OSPF_AS_EXTERNAL_LSA]) | |
996c9314 | 1332 | LSDB_LOOP (EXTERNAL_LSDB(ospf), rn, lsa) |
044506e7 DS |
1333 | apiserver_sync_callback(lsa, (void *)¶m, |
1334 | seqnum); | |
d62a17ae | 1335 | } |
1336 | ||
1337 | /* For AS-external opaque LSAs */ | |
1338 | if (ospf->lsdb) { | |
1339 | if (mask & Power2[OSPF_OPAQUE_AS_LSA]) | |
996c9314 | 1340 | LSDB_LOOP (OPAQUE_AS_LSDB(ospf), rn, lsa) |
044506e7 DS |
1341 | apiserver_sync_callback(lsa, (void *)¶m, |
1342 | seqnum); | |
d62a17ae | 1343 | } |
1344 | ||
1345 | /* Send a reply back to client with return code */ | |
1346 | rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1347 | return rc; | |
2d33f157 | 1348 | } |
1349 | ||
97355a6d CH |
1350 | /* |
1351 | * ----------------------------------------------------------- | |
1352 | * Followings are functions for synchronization. | |
149491af CH |
1353 | * ----------------------------------------------------------- |
1354 | */ | |
1355 | ||
1356 | int ospf_apiserver_handle_sync_reachable(struct ospf_apiserver *apiserv, | |
1357 | struct msg *msg) | |
1358 | { | |
1359 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1360 | struct route_table *rt = ospf->all_rtrs; | |
1361 | uint32_t seqnum = msg_get_seq(msg); | |
1362 | struct in_addr *a, *abuf; | |
1363 | struct msg_reachable_change *areach; | |
1364 | struct msg *amsg; | |
1365 | uint mcount, count; | |
1366 | int _rc, rc = 0; | |
1367 | ||
1368 | if (!rt) | |
1369 | goto out; | |
1370 | ||
1371 | /* send all adds based on current reachable routers */ | |
29a1a53d | 1372 | a = abuf = XCALLOC(MTYPE_APISERVER, sizeof(struct in_addr) * rt->count); |
149491af CH |
1373 | for (struct route_node *rn = route_top(rt); rn; rn = route_next(rn)) |
1374 | if (listhead((struct list *)rn->info)) | |
1375 | *a++ = rn->p.u.prefix4; | |
1376 | ||
1377 | assert((a - abuf) <= (long)rt->count); | |
1378 | count = (a - abuf); | |
1379 | ||
1380 | a = abuf; | |
1381 | while (count && !rc) { | |
1382 | amsg = new_msg_reachable_change(seqnum, count, a, 0, NULL); | |
1383 | areach = (struct msg_reachable_change *)STREAM_DATA(amsg->s); | |
1384 | mcount = ntohs(areach->nadd) + ntohs(areach->nremove); | |
1385 | assert(mcount <= count); | |
1386 | a = a + mcount; | |
1387 | count -= mcount; | |
1388 | rc = ospf_apiserver_send_msg(apiserv, amsg); | |
1389 | msg_free(amsg); | |
1390 | } | |
29a1a53d | 1391 | XFREE(MTYPE_APISERVER, abuf); |
149491af CH |
1392 | |
1393 | out: | |
149491af CH |
1394 | /* Send a reply back to client with return code */ |
1395 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
149491af CH |
1396 | rc = rc ? rc : _rc; |
1397 | apiserv->reachable_sync = !rc; | |
1398 | return rc; | |
1399 | } | |
1400 | ||
97355a6d CH |
1401 | int ospf_apiserver_handle_sync_ism(struct ospf_apiserver *apiserv, |
1402 | struct msg *msg) | |
1403 | { | |
1404 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1405 | struct listnode *anode, *inode; | |
1406 | struct ospf_area *area; | |
1407 | struct ospf_interface *oi; | |
1408 | struct msg *m; | |
1409 | uint32_t seqnum = msg_get_seq(msg); | |
1410 | int _rc, rc = 0; | |
1411 | ||
1412 | /* walk all areas */ | |
1413 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, anode, area)) { | |
1414 | /* walk all interfaces */ | |
1415 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, inode, oi)) { | |
1416 | m = new_msg_ism_change(seqnum, oi->address->u.prefix4, | |
1417 | area->area_id, oi->state); | |
1418 | rc = ospf_apiserver_send_msg(apiserv, m); | |
1419 | msg_free(m); | |
1420 | if (rc) | |
1421 | break; | |
1422 | } | |
1423 | if (rc) | |
1424 | break; | |
1425 | } | |
1426 | /* Send a reply back to client with return code */ | |
1427 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1428 | return rc ? rc : _rc; | |
1429 | } | |
1430 | ||
1431 | ||
1432 | int ospf_apiserver_handle_sync_nsm(struct ospf_apiserver *apiserv, | |
1433 | struct msg *msg) | |
1434 | { | |
1435 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1436 | struct listnode *anode, *inode; | |
1437 | struct ospf_area *area; | |
1438 | struct ospf_interface *oi; | |
1439 | struct ospf_neighbor *nbr; | |
1440 | struct route_node *rn; | |
1441 | struct msg *m; | |
1442 | uint32_t seqnum = msg_get_seq(msg); | |
1443 | int _rc, rc = 0; | |
1444 | ||
1445 | /* walk all areas */ | |
1446 | for (ALL_LIST_ELEMENTS_RO(ospf->areas, anode, area)) { | |
1447 | /* walk all interfaces */ | |
1448 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, inode, oi)) { | |
1449 | /* walk all neighbors */ | |
1450 | for (rn = route_top(oi->nbrs); rn; | |
1451 | rn = route_next(rn)) { | |
1452 | nbr = rn->info; | |
1453 | if (!nbr) | |
1454 | continue; | |
1455 | m = new_msg_nsm_change( | |
1456 | seqnum, oi->address->u.prefix4, | |
1457 | nbr->src, nbr->router_id, nbr->state); | |
1458 | rc = ospf_apiserver_send_msg(apiserv, m); | |
1459 | msg_free(m); | |
1460 | if (rc) | |
1461 | break; | |
1462 | } | |
1463 | if (rc) | |
1464 | break; | |
1465 | } | |
1466 | if (rc) | |
1467 | break; | |
1468 | } | |
1469 | /* Send a reply back to client with return code */ | |
1470 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1471 | return rc ? rc : _rc; | |
1472 | } | |
1473 | ||
2d33f157 | 1474 | |
44038c7a CH |
1475 | int ospf_apiserver_handle_sync_router_id(struct ospf_apiserver *apiserv, |
1476 | struct msg *msg) | |
1477 | { | |
1478 | struct ospf *ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1479 | uint32_t seqnum = msg_get_seq(msg); | |
1480 | struct msg *m; | |
1481 | int _rc, rc = 0; | |
1482 | ||
1483 | m = new_msg_router_id_change(seqnum, ospf->router_id); | |
1484 | rc = ospf_apiserver_send_msg(apiserv, m); | |
1485 | msg_free(m); | |
1486 | ||
1487 | /* Send a reply back to client with return code */ | |
1488 | _rc = ospf_apiserver_send_reply(apiserv, seqnum, rc); | |
1489 | return rc ? rc : _rc; | |
1490 | } | |
1491 | ||
2d33f157 | 1492 | /* ----------------------------------------------------------- |
78dfa0c7 | 1493 | * Following are functions to originate or update LSA |
2d33f157 | 1494 | * from an application. |
1495 | * ----------------------------------------------------------- | |
1496 | */ | |
1497 | ||
1498 | /* Create a new internal opaque LSA by taking prototype and filling in | |
1499 | missing fields such as age, sequence number, advertising router, | |
1500 | checksum and so on. The interface parameter is used for type 9 | |
1501 | LSAs, area parameter for type 10. Type 11 LSAs do neither need area | |
1502 | nor interface. */ | |
1503 | ||
d62a17ae | 1504 | struct ospf_lsa *ospf_apiserver_opaque_lsa_new(struct ospf_area *area, |
1505 | struct ospf_interface *oi, | |
1506 | struct lsa_header *protolsa) | |
2d33f157 | 1507 | { |
d62a17ae | 1508 | struct stream *s; |
1509 | struct lsa_header *newlsa; | |
1510 | struct ospf_lsa *new = NULL; | |
d7c0a89a QY |
1511 | uint8_t options = 0x0; |
1512 | uint16_t length; | |
d62a17ae | 1513 | |
1514 | struct ospf *ospf; | |
1515 | ||
c0f3f7cd | 1516 | if (oi && oi->ospf) |
0d31e63e CS |
1517 | ospf = oi->ospf; |
1518 | else | |
1519 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1520 | ||
d62a17ae | 1521 | assert(ospf); |
1522 | ||
1523 | /* Create a stream for internal opaque LSA */ | |
1524 | if ((s = stream_new(OSPF_MAX_LSA_SIZE)) == NULL) { | |
4adc415e | 1525 | zlog_warn("%s: stream_new failed", __func__); |
d62a17ae | 1526 | return NULL; |
1527 | } | |
1528 | ||
1529 | newlsa = (struct lsa_header *)STREAM_DATA(s); | |
1530 | ||
1531 | /* XXX If this is a link-local LSA or an AS-external LSA, how do we | |
1532 | have to set options? */ | |
1533 | ||
1534 | if (area) { | |
1535 | options = LSA_OPTIONS_GET(area); | |
1536 | options |= LSA_OPTIONS_NSSA_GET(area); | |
1537 | } | |
1538 | ||
1539 | options |= OSPF_OPTION_O; /* Don't forget to set option bit */ | |
1540 | ||
1541 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) { | |
96b663a3 MS |
1542 | zlog_debug("LSA[Type%d:%pI4]: Creating an Opaque-LSA instance", |
1543 | protolsa->type, &protolsa->id); | |
d62a17ae | 1544 | } |
1545 | ||
1546 | /* Set opaque-LSA header fields. */ | |
1547 | lsa_header_set(s, options, protolsa->type, protolsa->id, | |
1548 | ospf->router_id); | |
1549 | ||
1550 | /* Set opaque-LSA body fields. */ | |
d7c0a89a | 1551 | stream_put(s, ((uint8_t *)protolsa) + sizeof(struct lsa_header), |
d62a17ae | 1552 | ntohs(protolsa->length) - sizeof(struct lsa_header)); |
1553 | ||
1554 | /* Determine length of LSA. */ | |
1555 | length = stream_get_endp(s); | |
1556 | newlsa->length = htons(length); | |
1557 | ||
1558 | /* Create OSPF LSA. */ | |
5b3d4186 | 1559 | new = ospf_lsa_new_and_data(length); |
d62a17ae | 1560 | |
1561 | new->area = area; | |
1562 | new->oi = oi; | |
0d31e63e | 1563 | new->vrf_id = ospf->vrf_id; |
d62a17ae | 1564 | |
1565 | SET_FLAG(new->flags, OSPF_LSA_SELF); | |
1566 | memcpy(new->data, newlsa, length); | |
1567 | stream_free(s); | |
1568 | ||
1569 | return new; | |
2d33f157 | 1570 | } |
1571 | ||
1572 | ||
d62a17ae | 1573 | int ospf_apiserver_is_ready_type9(struct ospf_interface *oi) |
2d33f157 | 1574 | { |
bd1188f9 CH |
1575 | /* We can always handle getting opaque's even if we can't flood them */ |
1576 | return 1; | |
2d33f157 | 1577 | } |
1578 | ||
d62a17ae | 1579 | int ospf_apiserver_is_ready_type10(struct ospf_area *area) |
2d33f157 | 1580 | { |
bd1188f9 CH |
1581 | /* We can always handle getting opaque's even if we can't flood them */ |
1582 | return 1; | |
2d33f157 | 1583 | } |
1584 | ||
d62a17ae | 1585 | int ospf_apiserver_is_ready_type11(struct ospf *ospf) |
2d33f157 | 1586 | { |
bd1188f9 CH |
1587 | /* We can always handle getting opaque's even if we can't flood them */ |
1588 | return 1; | |
2d33f157 | 1589 | } |
1590 | ||
1591 | ||
d62a17ae | 1592 | int ospf_apiserver_handle_originate_request(struct ospf_apiserver *apiserv, |
1593 | struct msg *msg) | |
2d33f157 | 1594 | { |
d62a17ae | 1595 | struct msg_originate_request *omsg; |
1596 | struct lsa_header *data; | |
1597 | struct ospf_lsa *new; | |
1598 | struct ospf_lsa *old; | |
1599 | struct ospf_area *area = NULL; | |
1600 | struct ospf_interface *oi = NULL; | |
1601 | struct ospf_lsdb *lsdb = NULL; | |
1602 | struct ospf *ospf; | |
1603 | int lsa_type, opaque_type; | |
1604 | int ready = 0; | |
1605 | int rc = 0; | |
1606 | ||
b5a8894d | 1607 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1608 | |
1609 | /* Extract opaque LSA data from message */ | |
1610 | omsg = (struct msg_originate_request *)STREAM_DATA(msg->s); | |
1611 | data = &omsg->data; | |
1612 | ||
1613 | /* Determine interface for type9 or area for type10 LSAs. */ | |
1614 | switch (data->type) { | |
1615 | case OSPF_OPAQUE_LINK_LSA: | |
1616 | oi = ospf_apiserver_if_lookup_by_addr(omsg->ifaddr); | |
1617 | if (!oi) { | |
4adc415e | 1618 | zlog_warn("%s: unknown interface %pI4", __func__, |
96b663a3 | 1619 | &omsg->ifaddr); |
d62a17ae | 1620 | rc = OSPF_API_NOSUCHINTERFACE; |
1621 | goto out; | |
1622 | } | |
1623 | area = oi->area; | |
1624 | lsdb = area->lsdb; | |
1625 | break; | |
1626 | case OSPF_OPAQUE_AREA_LSA: | |
1627 | area = ospf_area_lookup_by_area_id(ospf, omsg->area_id); | |
1628 | if (!area) { | |
4adc415e | 1629 | zlog_warn("%s: unknown area %pI4", __func__, |
96b663a3 | 1630 | &omsg->area_id); |
d62a17ae | 1631 | rc = OSPF_API_NOSUCHAREA; |
1632 | goto out; | |
1633 | } | |
1634 | lsdb = area->lsdb; | |
1635 | break; | |
1636 | case OSPF_OPAQUE_AS_LSA: | |
1637 | lsdb = ospf->lsdb; | |
1638 | break; | |
1639 | default: | |
1640 | /* We can only handle opaque types here */ | |
4adc415e | 1641 | zlog_warn("%s: Cannot originate non-opaque LSA type %d", |
1642 | __func__, data->type); | |
d62a17ae | 1643 | rc = OSPF_API_ILLEGALLSATYPE; |
1644 | goto out; | |
1645 | } | |
1646 | ||
1647 | /* Check if we registered this opaque type */ | |
1648 | lsa_type = data->type; | |
1649 | opaque_type = GET_OPAQUE_TYPE(ntohl(data->id.s_addr)); | |
1650 | ||
1651 | if (!apiserver_is_opaque_type_registered(apiserv, lsa_type, | |
1652 | opaque_type)) { | |
4adc415e | 1653 | zlog_warn("%s: LSA-type(%d)/Opaque-type(%d): Not registered", |
1654 | __func__, lsa_type, opaque_type); | |
d62a17ae | 1655 | rc = OSPF_API_OPAQUETYPENOTREGISTERED; |
1656 | goto out; | |
1657 | } | |
1658 | ||
1659 | /* Make sure that the neighbors are ready before we can originate */ | |
1660 | switch (data->type) { | |
1661 | case OSPF_OPAQUE_LINK_LSA: | |
1662 | ready = ospf_apiserver_is_ready_type9(oi); | |
1663 | break; | |
1664 | case OSPF_OPAQUE_AREA_LSA: | |
1665 | ready = ospf_apiserver_is_ready_type10(area); | |
1666 | break; | |
1667 | case OSPF_OPAQUE_AS_LSA: | |
1668 | ready = ospf_apiserver_is_ready_type11(ospf); | |
1669 | break; | |
1670 | default: | |
1671 | break; | |
1672 | } | |
1673 | ||
1674 | if (!ready) { | |
1675 | zlog_warn("Neighbors not ready to originate type %d", | |
1676 | data->type); | |
1677 | rc = OSPF_API_NOTREADY; | |
1678 | goto out; | |
1679 | } | |
1680 | ||
1681 | /* Create OSPF's internal opaque LSA representation */ | |
1682 | new = ospf_apiserver_opaque_lsa_new(area, oi, data); | |
1683 | if (!new) { | |
1684 | rc = OSPF_API_NOMEMORY; /* XXX */ | |
1685 | goto out; | |
1686 | } | |
1687 | ||
1688 | /* Determine if LSA is new or an update for an existing one. */ | |
1689 | old = ospf_lsdb_lookup(lsdb, new); | |
1690 | ||
5349121b | 1691 | if (!old || !ospf_opaque_is_owned(old)) { |
d62a17ae | 1692 | /* New LSA install in LSDB. */ |
5349121b | 1693 | rc = ospf_apiserver_originate1(new, old); |
d62a17ae | 1694 | } else { |
1695 | /* | |
1696 | * Keep the new LSA instance in the "waiting place" until the | |
1697 | * next | |
1698 | * refresh timing. If several LSA update requests for the same | |
1699 | * LSID | |
1700 | * have issued by peer, the last one takes effect. | |
1701 | */ | |
1702 | new->lsdb = &apiserv->reserve; | |
1703 | ospf_lsdb_add(&apiserv->reserve, new); | |
1704 | ||
1705 | /* Kick the scheduler function. */ | |
1706 | ospf_opaque_lsa_refresh_schedule(old); | |
1707 | } | |
2d33f157 | 1708 | |
1709 | out: | |
1710 | ||
d62a17ae | 1711 | /* Send a reply back to client with return code */ |
1712 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
1713 | return rc; | |
2d33f157 | 1714 | } |
1715 | ||
1716 | ||
1717 | /* ----------------------------------------------------------- | |
d62a17ae | 1718 | * Flood an LSA within its flooding scope. |
2d33f157 | 1719 | * ----------------------------------------------------------- |
1720 | */ | |
1721 | ||
1722 | /* XXX We can probably use ospf_flood_through instead of this function | |
d62a17ae | 1723 | but then we need the neighbor parameter. If we set nbr to |
2d33f157 | 1724 | NULL then ospf_flood_through crashes due to dereferencing NULL. */ |
1725 | ||
d62a17ae | 1726 | void ospf_apiserver_flood_opaque_lsa(struct ospf_lsa *lsa) |
2d33f157 | 1727 | { |
d62a17ae | 1728 | assert(lsa); |
1729 | ||
1730 | switch (lsa->data->type) { | |
1731 | case OSPF_OPAQUE_LINK_LSA: | |
1732 | /* Increment counters? XXX */ | |
1733 | ||
1734 | /* Flood LSA through local network. */ | |
1735 | ospf_flood_through_area(lsa->area, NULL /*nbr */, lsa); | |
1736 | break; | |
1737 | case OSPF_OPAQUE_AREA_LSA: | |
1738 | /* Update LSA origination count. */ | |
1739 | assert(lsa->area); | |
1740 | lsa->area->ospf->lsa_originate_count++; | |
1741 | ||
1742 | /* Flood LSA through area. */ | |
1743 | ospf_flood_through_area(lsa->area, NULL /*nbr */, lsa); | |
1744 | break; | |
1745 | case OSPF_OPAQUE_AS_LSA: { | |
1746 | struct ospf *ospf; | |
1747 | ||
b5a8894d | 1748 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1749 | assert(ospf); |
1750 | ||
1751 | /* Increment counters? XXX */ | |
1752 | ||
1753 | /* Flood LSA through AS. */ | |
1754 | ospf_flood_through_as(ospf, NULL /*nbr */, lsa); | |
1755 | break; | |
1756 | } | |
1757 | } | |
2d33f157 | 1758 | } |
1759 | ||
5349121b | 1760 | int ospf_apiserver_originate1(struct ospf_lsa *lsa, struct ospf_lsa *old) |
2d33f157 | 1761 | { |
d62a17ae | 1762 | struct ospf *ospf; |
99b7c5d6 | 1763 | |
b5a8894d | 1764 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1765 | assert(ospf); |
99b7c5d6 | 1766 | |
5349121b CH |
1767 | if (old) { |
1768 | /* | |
1769 | * An old LSA exists that we didn't originate it in this | |
1770 | * session. Dump it, but increment past it's seqnum. | |
1771 | */ | |
1772 | assert(!ospf_opaque_is_owned(old)); | |
1773 | if (IS_LSA_MAX_SEQ(old)) { | |
4adc415e | 1774 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
1775 | "%s: old LSA at maxseq", __func__); | |
5349121b CH |
1776 | return -1; |
1777 | } | |
1778 | lsa->data->ls_seqnum = lsa_seqnum_increment(old); | |
1779 | ospf_discard_from_db(ospf, old->lsdb, old); | |
1780 | } | |
1781 | ||
d62a17ae | 1782 | /* Install this LSA into LSDB. */ |
1783 | if (ospf_lsa_install(ospf, lsa->oi, lsa) == NULL) { | |
cf444bcf | 1784 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
5349121b | 1785 | "%s: ospf_lsa_install failed", __func__); |
d62a17ae | 1786 | return -1; |
1787 | } | |
2d33f157 | 1788 | |
d62a17ae | 1789 | /* Flood LSA within scope */ |
2d33f157 | 1790 | |
1791 | #ifdef NOTYET | |
d62a17ae | 1792 | /* |
1793 | * NB: Modified version of "ospf_flood_though ()" accepts NULL "inbr" | |
1794 | * parameter, and thus it does not cause SIGSEGV error. | |
1795 | */ | |
1796 | ospf_flood_through(NULL /*nbr */, lsa); | |
1797 | #else /* NOTYET */ | |
1798 | ||
1799 | ospf_apiserver_flood_opaque_lsa(lsa); | |
2d33f157 | 1800 | #endif /* NOTYET */ |
1801 | ||
d62a17ae | 1802 | return 0; |
2d33f157 | 1803 | } |
1804 | ||
1805 | ||
1806 | /* Opaque LSAs of type 9 on a specific interface can now be | |
1807 | originated. Tell clients that registered type 9. */ | |
d62a17ae | 1808 | int ospf_apiserver_lsa9_originator(void *arg) |
2d33f157 | 1809 | { |
d62a17ae | 1810 | struct ospf_interface *oi; |
2d33f157 | 1811 | |
d62a17ae | 1812 | oi = (struct ospf_interface *)arg; |
1813 | if (listcount(apiserver_list) > 0) { | |
1814 | ospf_apiserver_clients_notify_ready_type9(oi); | |
1815 | } | |
1816 | return 0; | |
2d33f157 | 1817 | } |
1818 | ||
d62a17ae | 1819 | int ospf_apiserver_lsa10_originator(void *arg) |
2d33f157 | 1820 | { |
d62a17ae | 1821 | struct ospf_area *area; |
2d33f157 | 1822 | |
d62a17ae | 1823 | area = (struct ospf_area *)arg; |
1824 | if (listcount(apiserver_list) > 0) { | |
1825 | ospf_apiserver_clients_notify_ready_type10(area); | |
1826 | } | |
1827 | return 0; | |
2d33f157 | 1828 | } |
1829 | ||
d62a17ae | 1830 | int ospf_apiserver_lsa11_originator(void *arg) |
2d33f157 | 1831 | { |
d62a17ae | 1832 | struct ospf *ospf; |
2d33f157 | 1833 | |
d62a17ae | 1834 | ospf = (struct ospf *)arg; |
1835 | if (listcount(apiserver_list) > 0) { | |
1836 | ospf_apiserver_clients_notify_ready_type11(ospf); | |
1837 | } | |
1838 | return 0; | |
2d33f157 | 1839 | } |
1840 | ||
1841 | ||
1842 | /* Periodically refresh opaque LSAs so that they do not expire in | |
1843 | other routers. */ | |
d62a17ae | 1844 | struct ospf_lsa *ospf_apiserver_lsa_refresher(struct ospf_lsa *lsa) |
2d33f157 | 1845 | { |
d62a17ae | 1846 | struct ospf_apiserver *apiserv; |
1847 | struct ospf_lsa *new = NULL; | |
1848 | struct ospf *ospf; | |
1849 | ||
ed35fc05 | 1850 | assert(lsa); |
1851 | ||
b5a8894d | 1852 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1853 | assert(ospf); |
1854 | ||
1855 | apiserv = lookup_apiserver_by_lsa(lsa); | |
1856 | if (!apiserv) { | |
4adc415e | 1857 | zlog_warn("%s: LSA[%s]: No apiserver?", __func__, |
1858 | dump_lsa_key(lsa)); | |
d62a17ae | 1859 | lsa->data->ls_age = |
1860 | htons(OSPF_LSA_MAXAGE); /* Flush it anyway. */ | |
4adf00f7 | 1861 | goto out; |
d62a17ae | 1862 | } |
1863 | ||
1864 | if (IS_LSA_MAXAGE(lsa)) { | |
1865 | ospf_opaque_lsa_flush_schedule(lsa); | |
1866 | goto out; | |
1867 | } | |
1868 | ||
1869 | /* Check if updated version of LSA instance has already prepared. */ | |
1870 | new = ospf_lsdb_lookup(&apiserv->reserve, lsa); | |
1871 | if (!new) { | |
1872 | /* This is a periodic refresh, driven by core OSPF mechanism. */ | |
1873 | new = ospf_apiserver_opaque_lsa_new(lsa->area, lsa->oi, | |
1874 | lsa->data); | |
1875 | if (!new) { | |
4adc415e | 1876 | zlog_warn("%s: Cannot create a new LSA?", __func__); |
d62a17ae | 1877 | goto out; |
1878 | } | |
1879 | } else { | |
1880 | /* This is a forcible refresh, requested by OSPF-API client. */ | |
1881 | ospf_lsdb_delete(&apiserv->reserve, new); | |
1882 | new->lsdb = NULL; | |
1883 | } | |
1884 | ||
1885 | /* Increment sequence number */ | |
1886 | new->data->ls_seqnum = lsa_seqnum_increment(lsa); | |
1887 | ||
1888 | /* New LSA is in same area. */ | |
1889 | new->area = lsa->area; | |
1890 | SET_FLAG(new->flags, OSPF_LSA_SELF); | |
1891 | ||
1892 | /* Install LSA into LSDB. */ | |
1893 | if (ospf_lsa_install(ospf, new->oi, new) == NULL) { | |
4adc415e | 1894 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
1895 | "%s: ospf_lsa_install failed", __func__); | |
d62a17ae | 1896 | ospf_lsa_unlock(&new); |
1897 | goto out; | |
1898 | } | |
1899 | ||
1900 | /* Flood updated LSA through interface, area or AS */ | |
2d33f157 | 1901 | |
1902 | #ifdef NOTYET | |
d62a17ae | 1903 | ospf_flood_through(NULL /*nbr */, new); |
2d33f157 | 1904 | #endif /* NOTYET */ |
d62a17ae | 1905 | ospf_apiserver_flood_opaque_lsa(new); |
2d33f157 | 1906 | |
d62a17ae | 1907 | /* Debug logging. */ |
1908 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) { | |
96b663a3 MS |
1909 | zlog_debug("LSA[Type%d:%pI4]: Refresh Opaque LSA", |
1910 | new->data->type, &new->data->id); | |
d62a17ae | 1911 | ospf_lsa_header_dump(new->data); |
1912 | } | |
2d33f157 | 1913 | |
1914 | out: | |
d62a17ae | 1915 | return new; |
2d33f157 | 1916 | } |
1917 | ||
1918 | ||
1919 | /* ----------------------------------------------------------- | |
78dfa0c7 | 1920 | * Following are functions to delete LSAs |
2d33f157 | 1921 | * ----------------------------------------------------------- |
1922 | */ | |
1923 | ||
d62a17ae | 1924 | int ospf_apiserver_handle_delete_request(struct ospf_apiserver *apiserv, |
1925 | struct msg *msg) | |
2d33f157 | 1926 | { |
d62a17ae | 1927 | struct msg_delete_request *dmsg; |
1928 | struct ospf_lsa *old; | |
1929 | struct ospf_area *area = NULL; | |
08172828 | 1930 | struct ospf_interface *oi = NULL; |
d62a17ae | 1931 | struct in_addr id; |
1932 | int lsa_type, opaque_type; | |
1933 | int rc = 0; | |
1934 | struct ospf *ospf; | |
1935 | ||
b5a8894d | 1936 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 1937 | assert(ospf); |
1938 | ||
1939 | /* Extract opaque LSA from message */ | |
1940 | dmsg = (struct msg_delete_request *)STREAM_DATA(msg->s); | |
1941 | ||
1942 | /* Lookup area for link-local and area-local opaque LSAs */ | |
1943 | switch (dmsg->lsa_type) { | |
1944 | case OSPF_OPAQUE_LINK_LSA: | |
08172828 LB |
1945 | oi = ospf_apiserver_if_lookup_by_addr(dmsg->addr); |
1946 | if (!oi) { | |
1947 | zlog_warn("%s: unknown interface %pI4", __func__, | |
1948 | &dmsg->addr); | |
1949 | rc = OSPF_API_NOSUCHINTERFACE; | |
1950 | goto out; | |
1951 | } | |
1952 | area = oi->area; | |
1953 | break; | |
d62a17ae | 1954 | case OSPF_OPAQUE_AREA_LSA: |
08172828 | 1955 | area = ospf_area_lookup_by_area_id(ospf, dmsg->addr); |
d62a17ae | 1956 | if (!area) { |
4adc415e | 1957 | zlog_warn("%s: unknown area %pI4", __func__, |
08172828 | 1958 | &dmsg->addr); |
d62a17ae | 1959 | rc = OSPF_API_NOSUCHAREA; |
1960 | goto out; | |
1961 | } | |
1962 | break; | |
1963 | case OSPF_OPAQUE_AS_LSA: | |
1964 | /* AS-external opaque LSAs have no designated area */ | |
1965 | area = NULL; | |
1966 | break; | |
1967 | default: | |
4adc415e | 1968 | zlog_warn("%s: Cannot delete non-opaque LSA type %d", __func__, |
1969 | dmsg->lsa_type); | |
d62a17ae | 1970 | rc = OSPF_API_ILLEGALLSATYPE; |
1971 | goto out; | |
1972 | } | |
1973 | ||
1974 | /* Check if we registered this opaque type */ | |
1975 | lsa_type = dmsg->lsa_type; | |
1976 | opaque_type = dmsg->opaque_type; | |
1977 | ||
1978 | if (!apiserver_is_opaque_type_registered(apiserv, lsa_type, | |
1979 | opaque_type)) { | |
4adc415e | 1980 | zlog_warn("%s: LSA-type(%d)/Opaque-type(%d): Not registered", |
1981 | __func__, lsa_type, opaque_type); | |
d62a17ae | 1982 | rc = OSPF_API_OPAQUETYPENOTREGISTERED; |
1983 | goto out; | |
1984 | } | |
1985 | ||
1986 | /* opaque_id is in network byte order */ | |
1987 | id.s_addr = htonl( | |
1988 | SET_OPAQUE_LSID(dmsg->opaque_type, ntohl(dmsg->opaque_id))); | |
1989 | ||
1990 | /* | |
1991 | * Even if the target LSA has once scheduled to flush, it remains in | |
1992 | * the LSDB until it is finally handled by the maxage remover thread. | |
1993 | * Therefore, the lookup function below may return non-NULL result. | |
1994 | */ | |
b5a8894d | 1995 | old = ospf_lsa_lookup(ospf, area, dmsg->lsa_type, id, ospf->router_id); |
d62a17ae | 1996 | if (!old) { |
4adc415e | 1997 | zlog_warn("%s: LSA[Type%d:%pI4] not in LSDB", __func__, |
1998 | dmsg->lsa_type, &id); | |
d62a17ae | 1999 | rc = OSPF_API_NOSUCHLSA; |
2000 | goto out; | |
2001 | } | |
2002 | ||
2f30cb25 LB |
2003 | if (IS_DEL_ZERO_LEN_LSA(dmsg)) { |
2004 | /* minimize the size of the withdrawal: */ | |
2005 | old->opaque_zero_len_delete = 1; | |
2006 | } | |
2007 | ||
d62a17ae | 2008 | /* Schedule flushing of LSA from LSDB */ |
2009 | /* NB: Multiple scheduling will produce a warning message, but harmless. | |
2010 | */ | |
2011 | ospf_opaque_lsa_flush_schedule(old); | |
2d33f157 | 2012 | |
2013 | out: | |
2014 | ||
d62a17ae | 2015 | /* Send reply back to client including return code */ |
2016 | rc = ospf_apiserver_send_reply(apiserv, ntohl(msg->hdr.msgseq), rc); | |
2017 | return rc; | |
2d33f157 | 2018 | } |
2019 | ||
2020 | /* Flush self-originated opaque LSA */ | |
d62a17ae | 2021 | static int apiserver_flush_opaque_type_callback(struct ospf_lsa *lsa, |
2022 | void *p_arg, int int_arg) | |
2d33f157 | 2023 | { |
d62a17ae | 2024 | struct param_t { |
2025 | struct ospf_apiserver *apiserv; | |
d7c0a89a QY |
2026 | uint8_t lsa_type; |
2027 | uint8_t opaque_type; | |
d62a17ae | 2028 | } * param; |
2029 | ||
2030 | /* Sanity check */ | |
2031 | assert(lsa->data); | |
2032 | assert(p_arg); | |
2033 | param = (struct param_t *)p_arg; | |
2034 | ||
2035 | /* If LSA matches type and opaque type then delete it */ | |
2036 | if (IS_LSA_SELF(lsa) && lsa->data->type == param->lsa_type | |
2037 | && GET_OPAQUE_TYPE(ntohl(lsa->data->id.s_addr)) | |
2038 | == param->opaque_type) { | |
2039 | ospf_opaque_lsa_flush_schedule(lsa); | |
2040 | } | |
2041 | return 0; | |
2d33f157 | 2042 | } |
2043 | ||
2044 | /* Delete self-originated opaque LSAs of a given opaque type. This | |
2045 | function is called when an application unregisters a given opaque | |
2046 | type or a connection to an application closes and all those opaque | |
2047 | LSAs need to be flushed the LSDB. */ | |
d62a17ae | 2048 | void ospf_apiserver_flush_opaque_lsa(struct ospf_apiserver *apiserv, |
d7c0a89a | 2049 | uint8_t lsa_type, uint8_t opaque_type) |
2d33f157 | 2050 | { |
d62a17ae | 2051 | struct param_t { |
2052 | struct ospf_apiserver *apiserv; | |
d7c0a89a QY |
2053 | uint8_t lsa_type; |
2054 | uint8_t opaque_type; | |
d62a17ae | 2055 | } param; |
2056 | struct listnode *node, *nnode; | |
2057 | struct ospf *ospf; | |
2058 | struct ospf_area *area; | |
2059 | ||
b5a8894d | 2060 | ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
d62a17ae | 2061 | assert(ospf); |
2062 | ||
2063 | /* Set parameter struct. */ | |
2064 | param.apiserv = apiserv; | |
2065 | param.lsa_type = lsa_type; | |
2066 | param.opaque_type = opaque_type; | |
2067 | ||
2068 | switch (lsa_type) { | |
2069 | struct route_node *rn; | |
2070 | struct ospf_lsa *lsa; | |
2071 | ||
2072 | case OSPF_OPAQUE_LINK_LSA: | |
2073 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) | |
996c9314 | 2074 | LSDB_LOOP (OPAQUE_LINK_LSDB(area), rn, lsa) |
044506e7 DS |
2075 | apiserver_flush_opaque_type_callback( |
2076 | lsa, (void *)¶m, 0); | |
d62a17ae | 2077 | break; |
2078 | case OSPF_OPAQUE_AREA_LSA: | |
2079 | for (ALL_LIST_ELEMENTS(ospf->areas, node, nnode, area)) | |
996c9314 | 2080 | LSDB_LOOP (OPAQUE_AREA_LSDB(area), rn, lsa) |
044506e7 DS |
2081 | apiserver_flush_opaque_type_callback( |
2082 | lsa, (void *)¶m, 0); | |
d62a17ae | 2083 | break; |
2084 | case OSPF_OPAQUE_AS_LSA: | |
996c9314 | 2085 | LSDB_LOOP (OPAQUE_LINK_LSDB(ospf), rn, lsa) |
044506e7 DS |
2086 | apiserver_flush_opaque_type_callback(lsa, |
2087 | (void *)¶m, 0); | |
d62a17ae | 2088 | break; |
2089 | default: | |
2090 | break; | |
2091 | } | |
2092 | return; | |
2d33f157 | 2093 | } |
2094 | ||
2095 | ||
2096 | /* ----------------------------------------------------------- | |
78dfa0c7 | 2097 | * Following are callback functions to handle opaque types |
2d33f157 | 2098 | * ----------------------------------------------------------- |
2099 | */ | |
2100 | ||
d62a17ae | 2101 | int ospf_apiserver_new_if(struct interface *ifp) |
2d33f157 | 2102 | { |
d62a17ae | 2103 | struct ospf_interface *oi; |
2104 | ||
2105 | /* For some strange reason it seems possible that we are invoked | |
2106 | with an interface that has no name. This seems to happen during | |
2107 | initialization. Return if this happens */ | |
2108 | ||
2109 | if (ifp->name[0] == '\0') { | |
2110 | /* interface has empty name */ | |
4adc415e | 2111 | zlog_warn("%s: interface has no name?", __func__); |
d62a17ae | 2112 | return 0; |
2113 | } | |
2114 | ||
2115 | /* zlog_warn for debugging */ | |
2116 | zlog_warn("ospf_apiserver_new_if"); | |
2117 | zlog_warn("ifp name=%s status=%d index=%d", ifp->name, ifp->status, | |
2118 | ifp->ifindex); | |
2119 | ||
2120 | if (ifp->name[0] == '\0') { | |
2121 | /* interface has empty name */ | |
4adc415e | 2122 | zlog_warn("%s: interface has no name?", __func__); |
d62a17ae | 2123 | return 0; |
2124 | } | |
2125 | ||
2126 | oi = ospf_apiserver_if_lookup_by_ifp(ifp); | |
2127 | ||
2128 | if (!oi) { | |
2129 | /* This interface is known to Zebra but not to OSPF daemon yet. | |
2130 | */ | |
4adc415e | 2131 | zlog_warn("%s: interface %s not known to OSPFd?", __func__, |
2132 | ifp->name); | |
d62a17ae | 2133 | return 0; |
2134 | } | |
2135 | ||
2136 | assert(oi); | |
2137 | ||
2138 | /* New interface added to OSPF, tell clients about it */ | |
2139 | if (listcount(apiserver_list) > 0) { | |
2140 | ospf_apiserver_clients_notify_new_if(oi); | |
2141 | } | |
2142 | return 0; | |
2d33f157 | 2143 | } |
2144 | ||
d62a17ae | 2145 | int ospf_apiserver_del_if(struct interface *ifp) |
2d33f157 | 2146 | { |
d62a17ae | 2147 | struct ospf_interface *oi; |
2148 | ||
2149 | /* zlog_warn for debugging */ | |
4adc415e | 2150 | zlog_warn("%s ifp name=%s status=%d index=%d", __func__, ifp->name, |
2151 | ifp->status, ifp->ifindex); | |
d62a17ae | 2152 | |
2153 | oi = ospf_apiserver_if_lookup_by_ifp(ifp); | |
2154 | ||
2155 | if (!oi) { | |
2156 | /* This interface is known to Zebra but not to OSPF daemon | |
2157 | anymore. No need to tell clients about it */ | |
97355a6d | 2158 | zlog_warn("ifp name=%s not known to OSPFd", ifp->name); |
d62a17ae | 2159 | return 0; |
2160 | } | |
2161 | ||
2162 | /* Interface deleted, tell clients about it */ | |
2163 | if (listcount(apiserver_list) > 0) { | |
2164 | ospf_apiserver_clients_notify_del_if(oi); | |
2165 | } | |
2166 | return 0; | |
2d33f157 | 2167 | } |
2168 | ||
d62a17ae | 2169 | void ospf_apiserver_ism_change(struct ospf_interface *oi, int old_state) |
2d33f157 | 2170 | { |
d62a17ae | 2171 | /* Tell clients about interface change */ |
2d33f157 | 2172 | |
d62a17ae | 2173 | /* zlog_warn for debugging */ |
4adc415e | 2174 | zlog_warn("%s", __func__); |
d62a17ae | 2175 | if (listcount(apiserver_list) > 0) { |
2176 | ospf_apiserver_clients_notify_ism_change(oi); | |
2177 | } | |
2d33f157 | 2178 | |
4adc415e | 2179 | zlog_warn("%s oi->ifp->name=%s old_state=%d oi->state=%d", __func__, |
2180 | oi->ifp->name, old_state, oi->state); | |
2d33f157 | 2181 | } |
2182 | ||
d62a17ae | 2183 | void ospf_apiserver_nsm_change(struct ospf_neighbor *nbr, int old_status) |
2d33f157 | 2184 | { |
d62a17ae | 2185 | /* Neighbor status changed, tell clients about it */ |
4adc415e | 2186 | zlog_warn("%s", __func__); |
d62a17ae | 2187 | if (listcount(apiserver_list) > 0) { |
2188 | ospf_apiserver_clients_notify_nsm_change(nbr); | |
2189 | } | |
2d33f157 | 2190 | } |
2191 | ||
3e63092b RW |
2192 | void ospf_apiserver_show_info(struct vty *vty, struct json_object *json, |
2193 | struct ospf_lsa *lsa) | |
2d33f157 | 2194 | { |
d62a17ae | 2195 | struct opaque_lsa { |
2196 | struct lsa_header header; | |
d7c0a89a | 2197 | uint8_t data[1]; /* opaque data have variable length. This is |
d62a17ae | 2198 | start |
2199 | address */ | |
2200 | }; | |
2201 | struct opaque_lsa *olsa; | |
2202 | int opaquelen; | |
2203 | ||
2204 | olsa = (struct opaque_lsa *)lsa->data; | |
2205 | ||
2206 | if (VALID_OPAQUE_INFO_LEN(lsa->data)) | |
2207 | opaquelen = ntohs(lsa->data->length) - OSPF_LSA_HEADER_SIZE; | |
2208 | else | |
2209 | opaquelen = 0; | |
2210 | ||
2211 | /* Output information about opaque LSAs */ | |
97385ddd CH |
2212 | if (json) |
2213 | json_object_string_addf(json, "opaqueData", "%*pHXn", | |
2214 | (int)opaquelen, olsa->data); | |
2215 | else if (vty != NULL) { | |
d62a17ae | 2216 | int i; |
2217 | vty_out(vty, | |
2218 | " Added using OSPF API: %u octets of opaque data %s\n", | |
2219 | opaquelen, | |
2220 | VALID_OPAQUE_INFO_LEN(lsa->data) ? "" | |
2221 | : "(Invalid length?)"); | |
2222 | vty_out(vty, " Opaque data: "); | |
2223 | ||
2224 | for (i = 0; i < opaquelen; i++) { | |
2225 | vty_out(vty, "0x%x ", olsa->data[i]); | |
2226 | } | |
2227 | vty_out(vty, "\n"); | |
2228 | } else { | |
2229 | int i; | |
2230 | zlog_debug( | |
2231 | " Added using OSPF API: %u octets of opaque data %s", | |
2232 | opaquelen, | |
2233 | VALID_OPAQUE_INFO_LEN(lsa->data) ? "" | |
2234 | : "(Invalid length?)"); | |
2235 | zlog_debug(" Opaque data: "); | |
2236 | ||
2237 | for (i = 0; i < opaquelen; i++) { | |
2238 | zlog_debug("0x%x ", olsa->data[i]); | |
2239 | } | |
d62a17ae | 2240 | } |
2241 | return; | |
2d33f157 | 2242 | } |
2243 | ||
2244 | /* ----------------------------------------------------------- | |
78dfa0c7 | 2245 | * Following are functions to notify clients about events |
2d33f157 | 2246 | * ----------------------------------------------------------- |
2247 | */ | |
2248 | ||
2249 | /* Send a message to all clients. This is useful for messages | |
2250 | that need to be notified to all clients (such as interface | |
2251 | changes) */ | |
2252 | ||
d62a17ae | 2253 | void ospf_apiserver_clients_notify_all(struct msg *msg) |
2d33f157 | 2254 | { |
d62a17ae | 2255 | struct listnode *node, *nnode; |
2256 | struct ospf_apiserver *apiserv; | |
2d33f157 | 2257 | |
d62a17ae | 2258 | /* Send message to all clients */ |
2259 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) | |
2260 | ospf_apiserver_send_msg(apiserv, msg); | |
2d33f157 | 2261 | } |
2262 | ||
2263 | /* An interface is now ready to accept opaque LSAs. Notify all | |
2264 | clients that registered to use this opaque type */ | |
d62a17ae | 2265 | void ospf_apiserver_clients_notify_ready_type9(struct ospf_interface *oi) |
2d33f157 | 2266 | { |
d62a17ae | 2267 | struct listnode *node, *nnode; |
2268 | struct msg *msg; | |
2269 | struct ospf_apiserver *apiserv; | |
2270 | ||
2271 | assert(oi); | |
2272 | if (!oi->address) { | |
2273 | zlog_warn("Interface has no address?"); | |
2274 | return; | |
2275 | } | |
2276 | ||
2277 | if (!ospf_apiserver_is_ready_type9(oi)) { | |
2278 | zlog_warn("Interface not ready for type 9?"); | |
2279 | return; | |
2280 | } | |
2281 | ||
2282 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2283 | struct listnode *node2, *nnode2; | |
2284 | struct registered_opaque_type *r; | |
2285 | ||
2286 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
2287 | r)) { | |
2288 | if (r->lsa_type == OSPF_OPAQUE_LINK_LSA) { | |
2289 | msg = new_msg_ready_notify( | |
2290 | 0, OSPF_OPAQUE_LINK_LSA, r->opaque_type, | |
2291 | oi->address->u.prefix4); | |
2292 | if (!msg) { | |
2293 | zlog_warn( | |
4adc415e | 2294 | "%s: new_msg_ready_notify failed", |
2295 | __func__); | |
2d33f157 | 2296 | #ifdef NOTYET |
d62a17ae | 2297 | /* Cannot allocate new message. What |
2298 | * should we do? */ | |
2299 | ospf_apiserver_free(apiserv); | |
2d33f157 | 2300 | #endif |
d62a17ae | 2301 | goto out; |
2302 | } | |
2d33f157 | 2303 | |
d62a17ae | 2304 | ospf_apiserver_send_msg(apiserv, msg); |
2305 | msg_free(msg); | |
2306 | } | |
2307 | } | |
2d33f157 | 2308 | } |
2d33f157 | 2309 | |
2310 | out: | |
d62a17ae | 2311 | return; |
2d33f157 | 2312 | } |
2313 | ||
d62a17ae | 2314 | void ospf_apiserver_clients_notify_ready_type10(struct ospf_area *area) |
2d33f157 | 2315 | { |
d62a17ae | 2316 | struct listnode *node, *nnode; |
2317 | struct msg *msg; | |
2318 | struct ospf_apiserver *apiserv; | |
2319 | ||
2320 | assert(area); | |
2321 | ||
2322 | if (!ospf_apiserver_is_ready_type10(area)) { | |
2323 | zlog_warn("Area not ready for type 10?"); | |
2324 | return; | |
2325 | } | |
2326 | ||
2327 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2328 | struct listnode *node2, *nnode2; | |
2329 | struct registered_opaque_type *r; | |
2330 | ||
2331 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
2332 | r)) { | |
2333 | if (r->lsa_type == OSPF_OPAQUE_AREA_LSA) { | |
2334 | msg = new_msg_ready_notify( | |
2335 | 0, OSPF_OPAQUE_AREA_LSA, r->opaque_type, | |
2336 | area->area_id); | |
2337 | if (!msg) { | |
2338 | zlog_warn( | |
4adc415e | 2339 | "%s: new_msg_ready_nofity failed", |
2340 | __func__); | |
2d33f157 | 2341 | #ifdef NOTYET |
d62a17ae | 2342 | /* Cannot allocate new message. What |
2343 | * should we do? */ | |
2344 | ospf_apiserver_free(apiserv); | |
2d33f157 | 2345 | #endif |
d62a17ae | 2346 | goto out; |
2347 | } | |
2d33f157 | 2348 | |
d62a17ae | 2349 | ospf_apiserver_send_msg(apiserv, msg); |
2350 | msg_free(msg); | |
2351 | } | |
2352 | } | |
2d33f157 | 2353 | } |
2d33f157 | 2354 | |
2355 | out: | |
d62a17ae | 2356 | return; |
2d33f157 | 2357 | } |
2358 | ||
2359 | ||
d62a17ae | 2360 | void ospf_apiserver_clients_notify_ready_type11(struct ospf *top) |
2d33f157 | 2361 | { |
d62a17ae | 2362 | struct listnode *node, *nnode; |
2363 | struct msg *msg; | |
2364 | struct in_addr id_null = {.s_addr = 0L}; | |
2365 | struct ospf_apiserver *apiserv; | |
2366 | ||
2367 | assert(top); | |
2368 | ||
2369 | if (!ospf_apiserver_is_ready_type11(top)) { | |
2370 | zlog_warn("AS not ready for type 11?"); | |
2371 | return; | |
2372 | } | |
2373 | ||
2374 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2375 | struct listnode *node2, *nnode2; | |
2376 | struct registered_opaque_type *r; | |
2377 | ||
2378 | for (ALL_LIST_ELEMENTS(apiserv->opaque_types, node2, nnode2, | |
2379 | r)) { | |
2380 | if (r->lsa_type == OSPF_OPAQUE_AS_LSA) { | |
2381 | msg = new_msg_ready_notify( | |
2382 | 0, OSPF_OPAQUE_AS_LSA, r->opaque_type, | |
2383 | id_null); | |
2384 | if (!msg) { | |
2385 | zlog_warn( | |
4adc415e | 2386 | "%s: new_msg_ready_notify failed", |
2387 | __func__); | |
2d33f157 | 2388 | #ifdef NOTYET |
d62a17ae | 2389 | /* Cannot allocate new message. What |
2390 | * should we do? */ | |
2391 | ospf_apiserver_free(apiserv); | |
2d33f157 | 2392 | #endif |
d62a17ae | 2393 | goto out; |
2394 | } | |
2d33f157 | 2395 | |
d62a17ae | 2396 | ospf_apiserver_send_msg(apiserv, msg); |
2397 | msg_free(msg); | |
2398 | } | |
2399 | } | |
2d33f157 | 2400 | } |
2d33f157 | 2401 | |
2402 | out: | |
d62a17ae | 2403 | return; |
2d33f157 | 2404 | } |
2405 | ||
d62a17ae | 2406 | void ospf_apiserver_clients_notify_new_if(struct ospf_interface *oi) |
2d33f157 | 2407 | { |
d62a17ae | 2408 | struct msg *msg; |
2409 | ||
2410 | msg = new_msg_new_if(0, oi->address->u.prefix4, oi->area->area_id); | |
2411 | if (msg != NULL) { | |
2412 | ospf_apiserver_clients_notify_all(msg); | |
2413 | msg_free(msg); | |
2414 | } | |
2d33f157 | 2415 | } |
2416 | ||
d62a17ae | 2417 | void ospf_apiserver_clients_notify_del_if(struct ospf_interface *oi) |
2d33f157 | 2418 | { |
d62a17ae | 2419 | struct msg *msg; |
2420 | ||
2421 | msg = new_msg_del_if(0, oi->address->u.prefix4); | |
2422 | if (msg != NULL) { | |
2423 | ospf_apiserver_clients_notify_all(msg); | |
2424 | msg_free(msg); | |
2425 | } | |
2d33f157 | 2426 | } |
2427 | ||
d62a17ae | 2428 | void ospf_apiserver_clients_notify_ism_change(struct ospf_interface *oi) |
2d33f157 | 2429 | { |
d62a17ae | 2430 | struct msg *msg; |
2431 | struct in_addr ifaddr = {.s_addr = 0L}; | |
2432 | struct in_addr area_id = {.s_addr = 0L}; | |
2433 | ||
2434 | assert(oi); | |
2435 | assert(oi->ifp); | |
2436 | ||
2437 | if (oi->address) { | |
2438 | ifaddr = oi->address->u.prefix4; | |
2439 | } | |
2440 | if (oi->area) { | |
2441 | area_id = oi->area->area_id; | |
2442 | } | |
2443 | ||
2444 | msg = new_msg_ism_change(0, ifaddr, area_id, oi->state); | |
2445 | if (!msg) { | |
4adc415e | 2446 | zlog_warn("%s: msg_new failed", __func__); |
d62a17ae | 2447 | return; |
2448 | } | |
2449 | ||
2450 | ospf_apiserver_clients_notify_all(msg); | |
2451 | msg_free(msg); | |
2d33f157 | 2452 | } |
2453 | ||
d62a17ae | 2454 | void ospf_apiserver_clients_notify_nsm_change(struct ospf_neighbor *nbr) |
2d33f157 | 2455 | { |
d62a17ae | 2456 | struct msg *msg; |
9d162466 | 2457 | struct in_addr ifaddr; |
7295876a | 2458 | struct in_addr nbraddr; |
2d33f157 | 2459 | |
d62a17ae | 2460 | assert(nbr); |
2d33f157 | 2461 | |
45559c4d | 2462 | ifaddr = nbr->oi->address->u.prefix4; |
2d33f157 | 2463 | |
d62a17ae | 2464 | nbraddr = nbr->address.u.prefix4; |
2d33f157 | 2465 | |
d62a17ae | 2466 | msg = new_msg_nsm_change(0, ifaddr, nbraddr, nbr->router_id, |
2467 | nbr->state); | |
2468 | if (!msg) { | |
4adc415e | 2469 | zlog_warn("%s: msg_new failed", __func__); |
d62a17ae | 2470 | return; |
2471 | } | |
2d33f157 | 2472 | |
d62a17ae | 2473 | ospf_apiserver_clients_notify_all(msg); |
2474 | msg_free(msg); | |
2d33f157 | 2475 | } |
2476 | ||
b1e40ef0 CH |
2477 | static int apiserver_clients_lsa_change_notify(uint8_t msgtype, |
2478 | struct ospf_lsa *lsa) | |
2d33f157 | 2479 | { |
d62a17ae | 2480 | struct msg *msg; |
2481 | struct listnode *node, *nnode; | |
2482 | struct ospf_apiserver *apiserv; | |
2483 | ||
2484 | /* Default area for AS-External and Opaque11 LSAs */ | |
2485 | struct in_addr area_id = {.s_addr = 0L}; | |
2486 | ||
2487 | /* Default interface for non Opaque9 LSAs */ | |
2488 | struct in_addr ifaddr = {.s_addr = 0L}; | |
2489 | ||
2490 | if (lsa->area) { | |
2491 | area_id = lsa->area->area_id; | |
2492 | } | |
2493 | if (lsa->data->type == OSPF_OPAQUE_LINK_LSA) { | |
2494 | assert(lsa->oi); | |
2495 | ifaddr = lsa->oi->address->u.prefix4; | |
2496 | } | |
2497 | ||
2498 | /* Prepare message that can be sent to clients that have a matching | |
2499 | filter */ | |
2500 | msg = new_msg_lsa_change_notify(msgtype, 0L, /* no sequence number */ | |
2501 | ifaddr, area_id, | |
2502 | lsa->flags & OSPF_LSA_SELF, lsa->data); | |
2503 | if (!msg) { | |
4adc415e | 2504 | zlog_warn("%s: msg_new failed", __func__); |
b1e40ef0 | 2505 | return -1; |
d62a17ae | 2506 | } |
2507 | ||
2508 | /* Now send message to all clients with a matching filter */ | |
2509 | for (ALL_LIST_ELEMENTS(apiserver_list, node, nnode, apiserv)) { | |
2510 | struct lsa_filter_type *filter; | |
d7c0a89a QY |
2511 | uint16_t mask; |
2512 | uint32_t *area; | |
d62a17ae | 2513 | int i; |
2514 | ||
2515 | /* Check filter for this client. */ | |
2516 | filter = apiserv->filter; | |
2517 | ||
2518 | /* Check area IDs in case of non AS-E LSAs. | |
2519 | * If filter has areas (num_areas > 0), | |
2520 | * then one of the areas must match the area ID of this LSA. */ | |
2521 | ||
2522 | i = filter->num_areas; | |
2523 | if ((lsa->data->type == OSPF_AS_EXTERNAL_LSA) | |
2524 | || (lsa->data->type == OSPF_OPAQUE_AS_LSA)) { | |
2525 | i = 0; | |
2d33f157 | 2526 | } |
d62a17ae | 2527 | |
2528 | if (i > 0) { | |
d7c0a89a | 2529 | area = (uint32_t *)(filter + 1); |
d62a17ae | 2530 | while (i) { |
2531 | if (*area == area_id.s_addr) { | |
2532 | break; | |
2533 | } | |
2534 | i--; | |
2535 | area++; | |
2536 | } | |
2537 | } else { | |
2538 | i = 1; | |
2539 | } | |
2540 | ||
2541 | if (i > 0) { | |
2542 | /* Area match. Check LSA type. */ | |
2543 | mask = ntohs(filter->typemask); | |
2544 | ||
2545 | if (mask & Power2[lsa->data->type]) { | |
2546 | /* Type also matches. Check origin. */ | |
2547 | if ((filter->origin == ANY_ORIGIN) | |
2548 | || (filter->origin == IS_LSA_SELF(lsa))) { | |
2549 | ospf_apiserver_send_msg(apiserv, msg); | |
2550 | } | |
2551 | } | |
2d33f157 | 2552 | } |
2d33f157 | 2553 | } |
d62a17ae | 2554 | /* Free message since it is not used anymore */ |
2555 | msg_free(msg); | |
b1e40ef0 CH |
2556 | |
2557 | return 0; | |
2d33f157 | 2558 | } |
2559 | ||
2560 | ||
2561 | /* ------------------------------------------------------------- | |
78dfa0c7 | 2562 | * Following are hooks invoked when LSAs are updated or deleted |
2d33f157 | 2563 | * ------------------------------------------------------------- |
2564 | */ | |
2565 | ||
2566 | ||
b1e40ef0 | 2567 | int ospf_apiserver_lsa_update(struct ospf_lsa *lsa) |
2d33f157 | 2568 | { |
d62a17ae | 2569 | |
2570 | /* Only notify this update if the LSA's age is smaller than | |
2571 | MAXAGE. Otherwise clients would see LSA updates with max age just | |
2572 | before they are deleted from the LSDB. LSA delete messages have | |
2573 | MAXAGE too but should not be filtered. */ | |
b1e40ef0 | 2574 | if (IS_LSA_MAXAGE(lsa)) |
d62a17ae | 2575 | return 0; |
b1e40ef0 | 2576 | return apiserver_clients_lsa_change_notify(MSG_LSA_UPDATE_NOTIFY, lsa); |
2d33f157 | 2577 | } |
2578 | ||
d62a17ae | 2579 | int ospf_apiserver_lsa_delete(struct ospf_lsa *lsa) |
2d33f157 | 2580 | { |
b1e40ef0 | 2581 | return apiserver_clients_lsa_change_notify(MSG_LSA_DELETE_NOTIFY, lsa); |
2d33f157 | 2582 | } |
2583 | ||
149491af CH |
2584 | /* ------------------------------------------------------------- |
2585 | * Reachable functions | |
2586 | * ------------------------------------------------------------- | |
2587 | */ | |
2588 | ||
2589 | static inline int cmp_route_nodes(struct route_node *orn, | |
2590 | struct route_node *nrn) | |
2591 | { | |
2592 | if (!orn) | |
2593 | return 1; | |
2594 | else if (!nrn) | |
2595 | return -1; | |
2596 | else if (orn->p.u.prefix4.s_addr < nrn->p.u.prefix4.s_addr) | |
2597 | return -1; | |
2598 | else if (orn->p.u.prefix4.s_addr > nrn->p.u.prefix4.s_addr) | |
2599 | return 1; | |
2600 | else | |
2601 | return 0; | |
2602 | } | |
2603 | ||
2604 | void ospf_apiserver_notify_reachable(struct route_table *ort, | |
2605 | struct route_table *nrt) | |
2606 | { | |
2607 | struct msg *msg; | |
2608 | struct msg_reachable_change *areach; | |
2609 | struct route_node *orn, *nrn; | |
2610 | const uint insz = sizeof(struct in_addr); | |
2611 | struct in_addr *abuf = NULL, *dbuf = NULL; | |
2612 | struct in_addr *a = NULL, *d = NULL; | |
2613 | uint nadd, nremove; | |
2614 | int cmp; | |
2615 | ||
2616 | if (!ort && !nrt) { | |
2617 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2618 | zlog_debug("%s: no routing tables", __func__); | |
2619 | return; | |
2620 | } | |
2621 | if (nrt && nrt->count) | |
29a1a53d | 2622 | a = abuf = XCALLOC(MTYPE_APISERVER, insz * nrt->count); |
149491af | 2623 | if (ort && ort->count) |
29a1a53d | 2624 | d = dbuf = XCALLOC(MTYPE_APISERVER, insz * ort->count); |
149491af CH |
2625 | |
2626 | /* walk both tables */ | |
2627 | orn = ort ? route_top(ort) : NULL; | |
2628 | nrn = nrt ? route_top(nrt) : NULL; | |
2629 | while (orn || nrn) { | |
2630 | if (orn && !listhead((struct list *)orn->info)) { | |
2631 | orn = route_next(orn); | |
2632 | continue; | |
2633 | } | |
2634 | if (nrn && !listhead((struct list *)nrn->info)) { | |
2635 | nrn = route_next(nrn); | |
2636 | continue; | |
2637 | } | |
2638 | cmp = cmp_route_nodes(orn, nrn); | |
2639 | if (!cmp) { | |
2640 | /* if old == new advance old and new */ | |
2641 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2642 | zlog_debug("keeping router id: %pI4", | |
2643 | &orn->p.u.prefix4); | |
2644 | orn = route_next(orn); | |
2645 | nrn = route_next(nrn); | |
2646 | } else if (cmp < 0) { | |
2647 | assert(d != NULL); /* Silence SA warning */ | |
2648 | ||
2649 | /* if old < new, delete old, advance old */ | |
2650 | *d++ = orn->p.u.prefix4; | |
2651 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2652 | zlog_debug("removing router id: %pI4", | |
2653 | &orn->p.u.prefix4); | |
2654 | orn = route_next(orn); | |
2655 | } else { | |
2656 | assert(a != NULL); /* Silence SA warning */ | |
2657 | ||
2658 | /* if new < old, add new, advance new */ | |
2659 | *a++ = nrn->p.u.prefix4; | |
2660 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2661 | zlog_debug("adding router id: %pI4", | |
2662 | &nrn->p.u.prefix4); | |
2663 | nrn = route_next(nrn); | |
2664 | } | |
2665 | } | |
2666 | ||
2667 | nadd = abuf ? (a - abuf) : 0; | |
2668 | nremove = dbuf ? (d - dbuf) : 0; | |
2669 | a = abuf; | |
2670 | d = dbuf; | |
2671 | ||
2672 | while (nadd + nremove) { | |
2673 | msg = new_msg_reachable_change(0, nadd, a, nremove, d); | |
2674 | areach = (struct msg_reachable_change *)STREAM_DATA(msg->s); | |
2675 | ||
2676 | a += ntohs(areach->nadd); | |
2677 | nadd = nadd - ntohs(areach->nadd); | |
2678 | ||
2679 | d += ntohs(areach->nremove); | |
2680 | nremove = nremove - ntohs(areach->nremove); | |
2681 | ||
2682 | if (IS_DEBUG_OSPF_CLIENT_API) | |
2683 | zlog_debug("%s: adding %d removing %d", __func__, | |
2684 | ntohs(areach->nadd), ntohs(areach->nremove)); | |
2685 | ospf_apiserver_clients_notify_all(msg); | |
2686 | msg_free(msg); | |
2687 | } | |
2688 | if (abuf) | |
29a1a53d | 2689 | XFREE(MTYPE_APISERVER, abuf); |
149491af | 2690 | if (dbuf) |
29a1a53d | 2691 | XFREE(MTYPE_APISERVER, dbuf); |
149491af CH |
2692 | } |
2693 | ||
2694 | ||
44038c7a CH |
2695 | void ospf_apiserver_clients_notify_router_id_change(struct in_addr router_id) |
2696 | { | |
2697 | struct msg *msg; | |
2698 | ||
2699 | msg = new_msg_router_id_change(0, router_id); | |
2700 | if (!msg) { | |
2701 | zlog_warn("%s: new_msg_router_id_change failed", __func__); | |
2702 | return; | |
2703 | } | |
2704 | ||
2705 | ospf_apiserver_clients_notify_all(msg); | |
2706 | msg_free(msg); | |
2707 | } | |
2708 | ||
2709 | ||
2d33f157 | 2710 | #endif /* SUPPORT_OSPF_API */ |