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718e3744 | 1 | /* |
508e53e2 | 2 | * Copyright (C) 2003 Yasuhiro Ohara |
718e3744 | 3 | * |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 19 | */ |
20 | ||
508e53e2 | 21 | #include <zebra.h> |
22 | ||
3b4cd3a9 | 23 | #include "memory.h" |
508e53e2 | 24 | #include "log.h" |
25 | #include "vty.h" | |
26 | #include "command.h" | |
27 | #include "thread.h" | |
28 | #include "linklist.h" | |
29 | ||
508e53e2 | 30 | #include "ospf6_proto.h" |
31 | #include "ospf6_lsa.h" | |
32 | #include "ospf6_lsdb.h" | |
33 | #include "ospf6_network.h" | |
34 | #include "ospf6_message.h" | |
718e3744 | 35 | |
508e53e2 | 36 | #include "ospf6_top.h" |
37 | #include "ospf6_area.h" | |
38 | #include "ospf6_neighbor.h" | |
39 | #include "ospf6_interface.h" | |
718e3744 | 40 | |
abc7ef44 DO |
41 | /* for structures and macros ospf6_lsa_examin() needs */ |
42 | #include "ospf6_abr.h" | |
43 | #include "ospf6_asbr.h" | |
44 | #include "ospf6_intra.h" | |
45 | ||
508e53e2 | 46 | #include "ospf6_flood.h" |
049207c3 | 47 | #include "ospf6d.h" |
718e3744 | 48 | |
681b84e8 DT |
49 | #include <netinet/ip6.h> |
50 | ||
508e53e2 | 51 | unsigned char conf_debug_ospf6_message[6] = {0x03, 0, 0, 0, 0, 0}; |
d62a17ae | 52 | static const struct message ospf6_message_type_str[] = { |
53 | {OSPF6_MESSAGE_TYPE_HELLO, "Hello"}, | |
54 | {OSPF6_MESSAGE_TYPE_DBDESC, "DbDesc"}, | |
55 | {OSPF6_MESSAGE_TYPE_LSREQ, "LSReq"}, | |
56 | {OSPF6_MESSAGE_TYPE_LSUPDATE, "LSUpdate"}, | |
57 | {OSPF6_MESSAGE_TYPE_LSACK, "LSAck"}, | |
58 | {0}}; | |
718e3744 | 59 | |
abc7ef44 DO |
60 | /* Minimum (besides the standard OSPF packet header) lengths for OSPF |
61 | packets of particular types, offset is the "type" field. */ | |
d7c0a89a | 62 | const uint16_t ospf6_packet_minlen[OSPF6_MESSAGE_TYPE_ALL] = { |
d62a17ae | 63 | 0, |
64 | OSPF6_HELLO_MIN_SIZE, | |
65 | OSPF6_DB_DESC_MIN_SIZE, | |
66 | OSPF6_LS_REQ_MIN_SIZE, | |
67 | OSPF6_LS_UPD_MIN_SIZE, | |
68 | OSPF6_LS_ACK_MIN_SIZE}; | |
abc7ef44 DO |
69 | |
70 | /* Minimum (besides the standard LSA header) lengths for LSAs of particular | |
71 | types, offset is the "LSA function code" portion of "LSA type" field. */ | |
d7c0a89a | 72 | const uint16_t ospf6_lsa_minlen[OSPF6_LSTYPE_SIZE] = { |
d62a17ae | 73 | 0, |
74 | /* 0x2001 */ OSPF6_ROUTER_LSA_MIN_SIZE, | |
75 | /* 0x2002 */ OSPF6_NETWORK_LSA_MIN_SIZE, | |
76 | /* 0x2003 */ OSPF6_INTER_PREFIX_LSA_MIN_SIZE, | |
77 | /* 0x2004 */ OSPF6_INTER_ROUTER_LSA_FIX_SIZE, | |
78 | /* 0x4005 */ OSPF6_AS_EXTERNAL_LSA_MIN_SIZE, | |
79 | /* 0x2006 */ 0, | |
80 | /* 0x2007 */ OSPF6_AS_EXTERNAL_LSA_MIN_SIZE, | |
81 | /* 0x0008 */ OSPF6_LINK_LSA_MIN_SIZE, | |
82 | /* 0x2009 */ OSPF6_INTRA_PREFIX_LSA_MIN_SIZE}; | |
abc7ef44 | 83 | |
508e53e2 | 84 | /* print functions */ |
718e3744 | 85 | |
d62a17ae | 86 | static void ospf6_header_print(struct ospf6_header *oh) |
718e3744 | 87 | { |
d62a17ae | 88 | char router_id[16], area_id[16]; |
89 | inet_ntop(AF_INET, &oh->router_id, router_id, sizeof(router_id)); | |
90 | inet_ntop(AF_INET, &oh->area_id, area_id, sizeof(area_id)); | |
91 | ||
92 | zlog_debug(" OSPFv%d Type:%d Len:%hu Router-ID:%s", oh->version, | |
93 | oh->type, ntohs(oh->length), router_id); | |
94 | zlog_debug(" Area-ID:%s Cksum:%hx Instance-ID:%d", area_id, | |
95 | ntohs(oh->checksum), oh->instance_id); | |
718e3744 | 96 | } |
97 | ||
d62a17ae | 98 | void ospf6_hello_print(struct ospf6_header *oh) |
718e3744 | 99 | { |
d62a17ae | 100 | struct ospf6_hello *hello; |
101 | char options[16]; | |
102 | char drouter[16], bdrouter[16], neighbor[16]; | |
103 | char *p; | |
104 | ||
105 | ospf6_header_print(oh); | |
106 | assert(oh->type == OSPF6_MESSAGE_TYPE_HELLO); | |
107 | ||
108 | hello = (struct ospf6_hello *)((caddr_t)oh | |
109 | + sizeof(struct ospf6_header)); | |
110 | ||
111 | inet_ntop(AF_INET, &hello->drouter, drouter, sizeof(drouter)); | |
112 | inet_ntop(AF_INET, &hello->bdrouter, bdrouter, sizeof(bdrouter)); | |
113 | ospf6_options_printbuf(hello->options, options, sizeof(options)); | |
114 | ||
115 | zlog_debug(" I/F-Id:%ld Priority:%d Option:%s", | |
d7c0a89a | 116 | (unsigned long)ntohl(hello->interface_id), hello->priority, |
d62a17ae | 117 | options); |
118 | zlog_debug(" HelloInterval:%hu DeadInterval:%hu", | |
119 | ntohs(hello->hello_interval), ntohs(hello->dead_interval)); | |
120 | zlog_debug(" DR:%s BDR:%s", drouter, bdrouter); | |
121 | ||
122 | for (p = (char *)((caddr_t)hello + sizeof(struct ospf6_hello)); | |
d7c0a89a QY |
123 | p + sizeof(uint32_t) <= OSPF6_MESSAGE_END(oh); |
124 | p += sizeof(uint32_t)) { | |
d62a17ae | 125 | inet_ntop(AF_INET, (void *)p, neighbor, sizeof(neighbor)); |
126 | zlog_debug(" Neighbor: %s", neighbor); | |
127 | } | |
128 | ||
129 | assert(p == OSPF6_MESSAGE_END(oh)); | |
718e3744 | 130 | } |
131 | ||
d62a17ae | 132 | void ospf6_dbdesc_print(struct ospf6_header *oh) |
718e3744 | 133 | { |
d62a17ae | 134 | struct ospf6_dbdesc *dbdesc; |
135 | char options[16]; | |
136 | char *p; | |
508e53e2 | 137 | |
d62a17ae | 138 | ospf6_header_print(oh); |
139 | assert(oh->type == OSPF6_MESSAGE_TYPE_DBDESC); | |
508e53e2 | 140 | |
d62a17ae | 141 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh |
142 | + sizeof(struct ospf6_header)); | |
508e53e2 | 143 | |
d62a17ae | 144 | ospf6_options_printbuf(dbdesc->options, options, sizeof(options)); |
508e53e2 | 145 | |
d62a17ae | 146 | zlog_debug(" MBZ: %#x Option: %s IfMTU: %hu", dbdesc->reserved1, |
147 | options, ntohs(dbdesc->ifmtu)); | |
148 | zlog_debug(" MBZ: %#x Bits: %s%s%s SeqNum: %#lx", dbdesc->reserved2, | |
149 | (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT) ? "I" : "-"), | |
150 | (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MBIT) ? "M" : "-"), | |
151 | (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT) ? "m" : "s"), | |
d7c0a89a | 152 | (unsigned long)ntohl(dbdesc->seqnum)); |
508e53e2 | 153 | |
d62a17ae | 154 | for (p = (char *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc)); |
155 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
156 | p += sizeof(struct ospf6_lsa_header)) | |
157 | ospf6_lsa_header_print_raw((struct ospf6_lsa_header *)p); | |
508e53e2 | 158 | |
d62a17ae | 159 | assert(p == OSPF6_MESSAGE_END(oh)); |
718e3744 | 160 | } |
161 | ||
d62a17ae | 162 | void ospf6_lsreq_print(struct ospf6_header *oh) |
718e3744 | 163 | { |
d62a17ae | 164 | char id[16], adv_router[16]; |
165 | char *p; | |
166 | ||
167 | ospf6_header_print(oh); | |
168 | assert(oh->type == OSPF6_MESSAGE_TYPE_LSREQ); | |
169 | ||
170 | for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header)); | |
171 | p + sizeof(struct ospf6_lsreq_entry) <= OSPF6_MESSAGE_END(oh); | |
172 | p += sizeof(struct ospf6_lsreq_entry)) { | |
173 | struct ospf6_lsreq_entry *e = (struct ospf6_lsreq_entry *)p; | |
174 | inet_ntop(AF_INET, &e->adv_router, adv_router, | |
175 | sizeof(adv_router)); | |
176 | inet_ntop(AF_INET, &e->id, id, sizeof(id)); | |
177 | zlog_debug(" [%s Id:%s Adv:%s]", ospf6_lstype_name(e->type), | |
178 | id, adv_router); | |
179 | } | |
180 | ||
181 | assert(p == OSPF6_MESSAGE_END(oh)); | |
718e3744 | 182 | } |
183 | ||
d62a17ae | 184 | void ospf6_lsupdate_print(struct ospf6_header *oh) |
718e3744 | 185 | { |
d62a17ae | 186 | struct ospf6_lsupdate *lsupdate; |
d7c0a89a | 187 | unsigned long num; |
d62a17ae | 188 | char *p; |
718e3744 | 189 | |
d62a17ae | 190 | ospf6_header_print(oh); |
191 | assert(oh->type == OSPF6_MESSAGE_TYPE_LSUPDATE); | |
718e3744 | 192 | |
d62a17ae | 193 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh |
194 | + sizeof(struct ospf6_header)); | |
718e3744 | 195 | |
d62a17ae | 196 | num = ntohl(lsupdate->lsa_number); |
197 | zlog_debug(" Number of LSA: %ld", num); | |
718e3744 | 198 | |
d62a17ae | 199 | for (p = (char *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
200 | p < OSPF6_MESSAGE_END(oh) | |
201 | && p + OSPF6_LSA_SIZE(p) <= OSPF6_MESSAGE_END(oh); | |
202 | p += OSPF6_LSA_SIZE(p)) { | |
203 | ospf6_lsa_header_print_raw((struct ospf6_lsa_header *)p); | |
204 | } | |
718e3744 | 205 | |
d62a17ae | 206 | assert(p == OSPF6_MESSAGE_END(oh)); |
718e3744 | 207 | } |
208 | ||
d62a17ae | 209 | void ospf6_lsack_print(struct ospf6_header *oh) |
718e3744 | 210 | { |
d62a17ae | 211 | char *p; |
718e3744 | 212 | |
d62a17ae | 213 | ospf6_header_print(oh); |
214 | assert(oh->type == OSPF6_MESSAGE_TYPE_LSACK); | |
718e3744 | 215 | |
d62a17ae | 216 | for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header)); |
217 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
218 | p += sizeof(struct ospf6_lsa_header)) | |
219 | ospf6_lsa_header_print_raw((struct ospf6_lsa_header *)p); | |
508e53e2 | 220 | |
d62a17ae | 221 | assert(p == OSPF6_MESSAGE_END(oh)); |
718e3744 | 222 | } |
223 | ||
d62a17ae | 224 | static void ospf6_hello_recv(struct in6_addr *src, struct in6_addr *dst, |
225 | struct ospf6_interface *oi, | |
226 | struct ospf6_header *oh) | |
718e3744 | 227 | { |
d62a17ae | 228 | struct ospf6_hello *hello; |
229 | struct ospf6_neighbor *on; | |
230 | char *p; | |
231 | int twoway = 0; | |
232 | int neighborchange = 0; | |
233 | int neighbor_ifindex_change = 0; | |
234 | int backupseen = 0; | |
235 | ||
236 | hello = (struct ospf6_hello *)((caddr_t)oh | |
237 | + sizeof(struct ospf6_header)); | |
238 | ||
239 | /* HelloInterval check */ | |
240 | if (ntohs(hello->hello_interval) != oi->hello_interval) { | |
241 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
242 | zlog_debug("HelloInterval mismatch"); | |
243 | return; | |
244 | } | |
245 | ||
246 | /* RouterDeadInterval check */ | |
247 | if (ntohs(hello->dead_interval) != oi->dead_interval) { | |
248 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
249 | zlog_debug("RouterDeadInterval mismatch"); | |
250 | return; | |
251 | } | |
252 | ||
253 | /* E-bit check */ | |
254 | if (OSPF6_OPT_ISSET(hello->options, OSPF6_OPT_E) | |
255 | != OSPF6_OPT_ISSET(oi->area->options, OSPF6_OPT_E)) { | |
256 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
257 | zlog_debug("E-bit mismatch"); | |
258 | return; | |
259 | } | |
260 | ||
261 | /* Find neighbor, create if not exist */ | |
262 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
263 | if (on == NULL) { | |
264 | on = ospf6_neighbor_create(oh->router_id, oi); | |
265 | on->prev_drouter = on->drouter = hello->drouter; | |
266 | on->prev_bdrouter = on->bdrouter = hello->bdrouter; | |
267 | on->priority = hello->priority; | |
268 | } | |
269 | ||
270 | /* Always override neighbor's source address */ | |
271 | memcpy(&on->linklocal_addr, src, sizeof(struct in6_addr)); | |
272 | ||
273 | /* Neighbor ifindex check */ | |
274 | if (on->ifindex != (ifindex_t)ntohl(hello->interface_id)) { | |
275 | on->ifindex = ntohl(hello->interface_id); | |
276 | neighbor_ifindex_change++; | |
277 | } | |
278 | ||
279 | /* TwoWay check */ | |
280 | for (p = (char *)((caddr_t)hello + sizeof(struct ospf6_hello)); | |
d7c0a89a QY |
281 | p + sizeof(uint32_t) <= OSPF6_MESSAGE_END(oh); |
282 | p += sizeof(uint32_t)) { | |
283 | uint32_t *router_id = (uint32_t *)p; | |
d62a17ae | 284 | |
285 | if (*router_id == oi->area->ospf6->router_id) | |
286 | twoway++; | |
287 | } | |
288 | ||
289 | assert(p == OSPF6_MESSAGE_END(oh)); | |
290 | ||
291 | /* RouterPriority check */ | |
292 | if (on->priority != hello->priority) { | |
293 | on->priority = hello->priority; | |
294 | neighborchange++; | |
295 | } | |
296 | ||
297 | /* DR check */ | |
298 | if (on->drouter != hello->drouter) { | |
299 | on->prev_drouter = on->drouter; | |
300 | on->drouter = hello->drouter; | |
301 | if (on->prev_drouter == on->router_id | |
302 | || on->drouter == on->router_id) | |
303 | neighborchange++; | |
304 | } | |
305 | ||
306 | /* BDR check */ | |
307 | if (on->bdrouter != hello->bdrouter) { | |
308 | on->prev_bdrouter = on->bdrouter; | |
309 | on->bdrouter = hello->bdrouter; | |
310 | if (on->prev_bdrouter == on->router_id | |
311 | || on->bdrouter == on->router_id) | |
312 | neighborchange++; | |
313 | } | |
314 | ||
315 | /* BackupSeen check */ | |
316 | if (oi->state == OSPF6_INTERFACE_WAITING) { | |
317 | if (hello->bdrouter == on->router_id) | |
318 | backupseen++; | |
319 | else if (hello->drouter == on->router_id | |
320 | && hello->bdrouter == htonl(0)) | |
321 | backupseen++; | |
322 | } | |
323 | ||
43855e3d CS |
324 | oi->hello_in++; |
325 | ||
d62a17ae | 326 | /* Execute neighbor events */ |
327 | thread_execute(master, hello_received, on, 0); | |
328 | if (twoway) | |
329 | thread_execute(master, twoway_received, on, 0); | |
330 | else | |
331 | thread_execute(master, oneway_received, on, 0); | |
332 | ||
333 | /* Schedule interface events */ | |
334 | if (backupseen) | |
335 | thread_add_event(master, backup_seen, oi, 0, NULL); | |
336 | if (neighborchange) | |
337 | thread_add_event(master, neighbor_change, oi, 0, NULL); | |
338 | ||
339 | if (neighbor_ifindex_change && on->state == OSPF6_NEIGHBOR_FULL) | |
340 | OSPF6_ROUTER_LSA_SCHEDULE(oi->area); | |
718e3744 | 341 | } |
342 | ||
d62a17ae | 343 | static void ospf6_dbdesc_recv_master(struct ospf6_header *oh, |
344 | struct ospf6_neighbor *on) | |
718e3744 | 345 | { |
d62a17ae | 346 | struct ospf6_dbdesc *dbdesc; |
347 | char *p; | |
348 | ||
349 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh | |
350 | + sizeof(struct ospf6_header)); | |
351 | ||
352 | if (on->state < OSPF6_NEIGHBOR_INIT) { | |
353 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
354 | zlog_debug("Neighbor state less than Init, ignore"); | |
355 | return; | |
356 | } | |
357 | ||
358 | switch (on->state) { | |
359 | case OSPF6_NEIGHBOR_TWOWAY: | |
360 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
361 | zlog_debug("Neighbor state is 2-Way, ignore"); | |
362 | return; | |
363 | ||
364 | case OSPF6_NEIGHBOR_INIT: | |
365 | thread_execute(master, twoway_received, on, 0); | |
366 | if (on->state != OSPF6_NEIGHBOR_EXSTART) { | |
367 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
368 | zlog_debug( | |
369 | "Neighbor state is not ExStart, ignore"); | |
370 | return; | |
371 | } | |
372 | /* else fall through to ExStart */ | |
373 | /* fallthru */ | |
374 | case OSPF6_NEIGHBOR_EXSTART: | |
375 | /* if neighbor obeys us as our slave, schedule negotiation_done | |
376 | and process LSA Headers. Otherwise, ignore this message */ | |
377 | if (!CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT) | |
378 | && !CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT) | |
379 | && ntohl(dbdesc->seqnum) == on->dbdesc_seqnum) { | |
380 | /* execute NegotiationDone */ | |
381 | thread_execute(master, negotiation_done, on, 0); | |
382 | ||
383 | /* Record neighbor options */ | |
384 | memcpy(on->options, dbdesc->options, | |
385 | sizeof(on->options)); | |
386 | } else { | |
387 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
388 | zlog_debug("Negotiation failed"); | |
389 | return; | |
390 | } | |
391 | /* fall through to exchange */ | |
392 | ||
393 | case OSPF6_NEIGHBOR_EXCHANGE: | |
394 | if (!memcmp(dbdesc, &on->dbdesc_last, | |
395 | sizeof(struct ospf6_dbdesc))) { | |
396 | /* Duplicated DatabaseDescription is dropped by master | |
397 | */ | |
398 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
399 | zlog_debug( | |
400 | "Duplicated dbdesc discarded by Master, ignore"); | |
401 | return; | |
402 | } | |
403 | ||
404 | if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT)) { | |
405 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
406 | zlog_debug("Master/Slave bit mismatch"); | |
407 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
408 | NULL); | |
409 | return; | |
410 | } | |
411 | ||
412 | if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT)) { | |
413 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
414 | zlog_debug("Initialize bit mismatch"); | |
415 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
416 | NULL); | |
417 | return; | |
418 | } | |
419 | ||
420 | if (memcmp(on->options, dbdesc->options, sizeof(on->options))) { | |
421 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
422 | zlog_debug("Option field mismatch"); | |
423 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
424 | NULL); | |
425 | return; | |
426 | } | |
427 | ||
428 | if (ntohl(dbdesc->seqnum) != on->dbdesc_seqnum) { | |
429 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
430 | zlog_debug( | |
431 | "Sequence number mismatch (%#lx expected)", | |
d7c0a89a | 432 | (unsigned long)on->dbdesc_seqnum); |
d62a17ae | 433 | thread_add_event(master, seqnumber_mismatch, on, 0, |
434 | NULL); | |
435 | return; | |
436 | } | |
437 | break; | |
438 | ||
439 | case OSPF6_NEIGHBOR_LOADING: | |
440 | case OSPF6_NEIGHBOR_FULL: | |
441 | if (!memcmp(dbdesc, &on->dbdesc_last, | |
442 | sizeof(struct ospf6_dbdesc))) { | |
443 | /* Duplicated DatabaseDescription is dropped by master | |
444 | */ | |
445 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
446 | zlog_debug( | |
447 | "Duplicated dbdesc discarded by Master, ignore"); | |
448 | return; | |
449 | } | |
450 | ||
451 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
452 | zlog_debug("Not duplicate dbdesc in state %s", | |
453 | ospf6_neighbor_state_str[on->state]); | |
454 | thread_add_event(master, seqnumber_mismatch, on, 0, NULL); | |
455 | return; | |
456 | ||
457 | default: | |
458 | assert(0); | |
459 | break; | |
460 | } | |
461 | ||
462 | /* Process LSA headers */ | |
463 | for (p = (char *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc)); | |
464 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
465 | p += sizeof(struct ospf6_lsa_header)) { | |
466 | struct ospf6_lsa *his, *mine; | |
467 | struct ospf6_lsdb *lsdb = NULL; | |
468 | ||
469 | his = ospf6_lsa_create_headeronly((struct ospf6_lsa_header *)p); | |
470 | ||
471 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
472 | zlog_debug("%s", his->name); | |
473 | ||
474 | switch (OSPF6_LSA_SCOPE(his->header->type)) { | |
475 | case OSPF6_SCOPE_LINKLOCAL: | |
476 | lsdb = on->ospf6_if->lsdb; | |
477 | break; | |
478 | case OSPF6_SCOPE_AREA: | |
479 | lsdb = on->ospf6_if->area->lsdb; | |
480 | break; | |
481 | case OSPF6_SCOPE_AS: | |
482 | lsdb = on->ospf6_if->area->ospf6->lsdb; | |
483 | break; | |
484 | case OSPF6_SCOPE_RESERVED: | |
485 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
486 | zlog_debug("Ignoring LSA of reserved scope"); | |
487 | ospf6_lsa_delete(his); | |
488 | continue; | |
489 | break; | |
490 | } | |
491 | ||
492 | if (ntohs(his->header->type) == OSPF6_LSTYPE_AS_EXTERNAL | |
493 | && IS_AREA_STUB(on->ospf6_if->area)) { | |
494 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
495 | zlog_debug( | |
496 | "SeqNumMismatch (E-bit mismatch), discard"); | |
497 | ospf6_lsa_delete(his); | |
498 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
499 | NULL); | |
500 | return; | |
501 | } | |
502 | ||
503 | mine = ospf6_lsdb_lookup(his->header->type, his->header->id, | |
504 | his->header->adv_router, lsdb); | |
505 | if (mine == NULL) { | |
506 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
507 | zlog_debug("Add request (No database copy)"); | |
508 | ospf6_lsdb_add(ospf6_lsa_copy(his), on->request_list); | |
509 | } else if (ospf6_lsa_compare(his, mine) < 0) { | |
510 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
511 | zlog_debug("Add request (Received MoreRecent)"); | |
512 | ospf6_lsdb_add(ospf6_lsa_copy(his), on->request_list); | |
513 | } else { | |
514 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
515 | zlog_debug("Discard (Existing MoreRecent)"); | |
516 | } | |
517 | ospf6_lsa_delete(his); | |
518 | } | |
519 | ||
520 | assert(p == OSPF6_MESSAGE_END(oh)); | |
521 | ||
522 | /* Increment sequence number */ | |
523 | on->dbdesc_seqnum++; | |
524 | ||
525 | /* schedule send lsreq */ | |
526 | if (on->request_list->count) | |
527 | thread_add_event(master, ospf6_lsreq_send, on, 0, | |
528 | &on->thread_send_lsreq); | |
529 | ||
530 | THREAD_OFF(on->thread_send_dbdesc); | |
531 | ||
532 | /* More bit check */ | |
533 | if (!CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MBIT) | |
534 | && !CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT)) | |
535 | thread_add_event(master, exchange_done, on, 0, NULL); | |
536 | else { | |
537 | on->thread_send_dbdesc = NULL; | |
538 | thread_add_event(master, ospf6_dbdesc_send_newone, on, 0, | |
539 | &on->thread_send_dbdesc); | |
540 | } | |
541 | ||
542 | /* save last received dbdesc */ | |
543 | memcpy(&on->dbdesc_last, dbdesc, sizeof(struct ospf6_dbdesc)); | |
718e3744 | 544 | } |
545 | ||
d62a17ae | 546 | static void ospf6_dbdesc_recv_slave(struct ospf6_header *oh, |
547 | struct ospf6_neighbor *on) | |
718e3744 | 548 | { |
d62a17ae | 549 | struct ospf6_dbdesc *dbdesc; |
550 | char *p; | |
551 | ||
552 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh | |
553 | + sizeof(struct ospf6_header)); | |
554 | ||
555 | if (on->state < OSPF6_NEIGHBOR_INIT) { | |
556 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
557 | zlog_debug("Neighbor state less than Init, ignore"); | |
558 | return; | |
559 | } | |
560 | ||
561 | switch (on->state) { | |
562 | case OSPF6_NEIGHBOR_TWOWAY: | |
563 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
564 | zlog_debug("Neighbor state is 2-Way, ignore"); | |
565 | return; | |
566 | ||
567 | case OSPF6_NEIGHBOR_INIT: | |
568 | thread_execute(master, twoway_received, on, 0); | |
569 | if (on->state != OSPF6_NEIGHBOR_EXSTART) { | |
570 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
571 | zlog_debug( | |
572 | "Neighbor state is not ExStart, ignore"); | |
573 | return; | |
574 | } | |
575 | /* else fall through to ExStart */ | |
576 | /* fallthru */ | |
577 | case OSPF6_NEIGHBOR_EXSTART: | |
578 | /* If the neighbor is Master, act as Slave. Schedule | |
579 | negotiation_done | |
580 | and process LSA Headers. Otherwise, ignore this message */ | |
581 | if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT) | |
582 | && CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MBIT) | |
583 | && CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT) | |
584 | && ntohs(oh->length) | |
585 | == sizeof(struct ospf6_header) | |
586 | + sizeof(struct ospf6_dbdesc)) { | |
587 | /* set the master/slave bit to slave */ | |
588 | UNSET_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT); | |
589 | ||
590 | /* set the DD sequence number to one specified by master | |
591 | */ | |
592 | on->dbdesc_seqnum = ntohl(dbdesc->seqnum); | |
593 | ||
594 | /* schedule NegotiationDone */ | |
595 | thread_execute(master, negotiation_done, on, 0); | |
596 | ||
597 | /* Record neighbor options */ | |
598 | memcpy(on->options, dbdesc->options, | |
599 | sizeof(on->options)); | |
600 | } else { | |
601 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
602 | zlog_debug("Negotiation failed"); | |
603 | return; | |
604 | } | |
605 | break; | |
606 | ||
607 | case OSPF6_NEIGHBOR_EXCHANGE: | |
608 | if (!memcmp(dbdesc, &on->dbdesc_last, | |
609 | sizeof(struct ospf6_dbdesc))) { | |
610 | /* Duplicated DatabaseDescription causes slave to | |
611 | * retransmit */ | |
612 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
613 | zlog_debug( | |
614 | "Duplicated dbdesc causes retransmit"); | |
615 | THREAD_OFF(on->thread_send_dbdesc); | |
616 | on->thread_send_dbdesc = NULL; | |
617 | thread_add_event(master, ospf6_dbdesc_send, on, 0, | |
618 | &on->thread_send_dbdesc); | |
619 | return; | |
620 | } | |
621 | ||
622 | if (!CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT)) { | |
623 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
624 | zlog_debug("Master/Slave bit mismatch"); | |
625 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
626 | NULL); | |
627 | return; | |
628 | } | |
629 | ||
630 | if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT)) { | |
631 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
632 | zlog_debug("Initialize bit mismatch"); | |
633 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
634 | NULL); | |
635 | return; | |
636 | } | |
637 | ||
638 | if (memcmp(on->options, dbdesc->options, sizeof(on->options))) { | |
639 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
640 | zlog_debug("Option field mismatch"); | |
641 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
642 | NULL); | |
643 | return; | |
644 | } | |
645 | ||
646 | if (ntohl(dbdesc->seqnum) != on->dbdesc_seqnum + 1) { | |
647 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
648 | zlog_debug( | |
649 | "Sequence number mismatch (%#lx expected)", | |
d7c0a89a | 650 | (unsigned long)on->dbdesc_seqnum + 1); |
d62a17ae | 651 | thread_add_event(master, seqnumber_mismatch, on, 0, |
652 | NULL); | |
653 | return; | |
654 | } | |
655 | break; | |
656 | ||
657 | case OSPF6_NEIGHBOR_LOADING: | |
658 | case OSPF6_NEIGHBOR_FULL: | |
659 | if (!memcmp(dbdesc, &on->dbdesc_last, | |
660 | sizeof(struct ospf6_dbdesc))) { | |
661 | /* Duplicated DatabaseDescription causes slave to | |
662 | * retransmit */ | |
663 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
664 | zlog_debug( | |
665 | "Duplicated dbdesc causes retransmit"); | |
666 | THREAD_OFF(on->thread_send_dbdesc); | |
667 | thread_add_event(master, ospf6_dbdesc_send, on, 0, | |
668 | &on->thread_send_dbdesc); | |
669 | return; | |
670 | } | |
671 | ||
672 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
673 | zlog_debug("Not duplicate dbdesc in state %s", | |
674 | ospf6_neighbor_state_str[on->state]); | |
675 | thread_add_event(master, seqnumber_mismatch, on, 0, NULL); | |
676 | return; | |
677 | ||
678 | default: | |
679 | assert(0); | |
680 | break; | |
681 | } | |
682 | ||
683 | /* Process LSA headers */ | |
684 | for (p = (char *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc)); | |
685 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
686 | p += sizeof(struct ospf6_lsa_header)) { | |
687 | struct ospf6_lsa *his, *mine; | |
688 | struct ospf6_lsdb *lsdb = NULL; | |
689 | ||
690 | his = ospf6_lsa_create_headeronly((struct ospf6_lsa_header *)p); | |
691 | ||
692 | switch (OSPF6_LSA_SCOPE(his->header->type)) { | |
693 | case OSPF6_SCOPE_LINKLOCAL: | |
694 | lsdb = on->ospf6_if->lsdb; | |
695 | break; | |
696 | case OSPF6_SCOPE_AREA: | |
697 | lsdb = on->ospf6_if->area->lsdb; | |
698 | break; | |
699 | case OSPF6_SCOPE_AS: | |
700 | lsdb = on->ospf6_if->area->ospf6->lsdb; | |
701 | break; | |
702 | case OSPF6_SCOPE_RESERVED: | |
703 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
704 | zlog_debug("Ignoring LSA of reserved scope"); | |
705 | ospf6_lsa_delete(his); | |
706 | continue; | |
707 | break; | |
708 | } | |
709 | ||
710 | if (OSPF6_LSA_SCOPE(his->header->type) == OSPF6_SCOPE_AS | |
711 | && IS_AREA_STUB(on->ospf6_if->area)) { | |
712 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
713 | zlog_debug("E-bit mismatch with LSA Headers"); | |
714 | ospf6_lsa_delete(his); | |
715 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
716 | NULL); | |
717 | return; | |
718 | } | |
719 | ||
720 | mine = ospf6_lsdb_lookup(his->header->type, his->header->id, | |
721 | his->header->adv_router, lsdb); | |
722 | if (mine == NULL || ospf6_lsa_compare(his, mine) < 0) { | |
723 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
724 | zlog_debug("Add request-list: %s", his->name); | |
725 | ospf6_lsdb_add(ospf6_lsa_copy(his), on->request_list); | |
726 | } | |
727 | ospf6_lsa_delete(his); | |
728 | } | |
729 | ||
730 | assert(p == OSPF6_MESSAGE_END(oh)); | |
731 | ||
732 | /* Set sequence number to Master's */ | |
733 | on->dbdesc_seqnum = ntohl(dbdesc->seqnum); | |
734 | ||
735 | /* schedule send lsreq */ | |
736 | if (on->request_list->count) | |
737 | thread_add_event(master, ospf6_lsreq_send, on, 0, | |
738 | &on->thread_send_lsreq); | |
739 | ||
740 | THREAD_OFF(on->thread_send_dbdesc); | |
741 | thread_add_event(master, ospf6_dbdesc_send_newone, on, 0, | |
742 | &on->thread_send_dbdesc); | |
743 | ||
744 | /* save last received dbdesc */ | |
745 | memcpy(&on->dbdesc_last, dbdesc, sizeof(struct ospf6_dbdesc)); | |
718e3744 | 746 | } |
747 | ||
d62a17ae | 748 | static void ospf6_dbdesc_recv(struct in6_addr *src, struct in6_addr *dst, |
749 | struct ospf6_interface *oi, | |
750 | struct ospf6_header *oh) | |
718e3744 | 751 | { |
d62a17ae | 752 | struct ospf6_neighbor *on; |
753 | struct ospf6_dbdesc *dbdesc; | |
754 | ||
755 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
756 | if (on == NULL) { | |
757 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
758 | zlog_debug("Neighbor not found, ignore"); | |
759 | return; | |
760 | } | |
761 | ||
762 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh | |
763 | + sizeof(struct ospf6_header)); | |
764 | ||
765 | /* Interface MTU check */ | |
766 | if (!oi->mtu_ignore && ntohs(dbdesc->ifmtu) != oi->ifmtu) { | |
767 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
768 | zlog_debug("I/F MTU mismatch"); | |
769 | return; | |
770 | } | |
771 | ||
772 | if (dbdesc->reserved1 || dbdesc->reserved2) { | |
773 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
774 | zlog_debug( | |
775 | "Non-0 reserved field in %s's DbDesc, correct", | |
776 | on->name); | |
777 | dbdesc->reserved1 = 0; | |
778 | dbdesc->reserved2 = 0; | |
779 | } | |
780 | ||
43855e3d CS |
781 | oi->db_desc_in++; |
782 | ||
d62a17ae | 783 | if (ntohl(oh->router_id) < ntohl(ospf6->router_id)) |
784 | ospf6_dbdesc_recv_master(oh, on); | |
785 | else if (ntohl(ospf6->router_id) < ntohl(oh->router_id)) | |
786 | ospf6_dbdesc_recv_slave(oh, on); | |
787 | else { | |
788 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
789 | zlog_debug("Can't decide which is master, ignore"); | |
790 | } | |
718e3744 | 791 | } |
792 | ||
d62a17ae | 793 | static void ospf6_lsreq_recv(struct in6_addr *src, struct in6_addr *dst, |
794 | struct ospf6_interface *oi, | |
795 | struct ospf6_header *oh) | |
718e3744 | 796 | { |
d62a17ae | 797 | struct ospf6_neighbor *on; |
798 | char *p; | |
799 | struct ospf6_lsreq_entry *e; | |
800 | struct ospf6_lsdb *lsdb = NULL; | |
801 | struct ospf6_lsa *lsa; | |
802 | ||
803 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
804 | if (on == NULL) { | |
805 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
806 | zlog_debug("Neighbor not found, ignore"); | |
807 | return; | |
808 | } | |
809 | ||
810 | if (on->state != OSPF6_NEIGHBOR_EXCHANGE | |
811 | && on->state != OSPF6_NEIGHBOR_LOADING | |
812 | && on->state != OSPF6_NEIGHBOR_FULL) { | |
813 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
814 | zlog_debug("Neighbor state less than Exchange, ignore"); | |
815 | return; | |
816 | } | |
817 | ||
43855e3d CS |
818 | oi->ls_req_in++; |
819 | ||
d62a17ae | 820 | /* Process each request */ |
821 | for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header)); | |
822 | p + sizeof(struct ospf6_lsreq_entry) <= OSPF6_MESSAGE_END(oh); | |
823 | p += sizeof(struct ospf6_lsreq_entry)) { | |
824 | e = (struct ospf6_lsreq_entry *)p; | |
825 | ||
826 | switch (OSPF6_LSA_SCOPE(e->type)) { | |
827 | case OSPF6_SCOPE_LINKLOCAL: | |
828 | lsdb = on->ospf6_if->lsdb; | |
829 | break; | |
830 | case OSPF6_SCOPE_AREA: | |
831 | lsdb = on->ospf6_if->area->lsdb; | |
832 | break; | |
833 | case OSPF6_SCOPE_AS: | |
834 | lsdb = on->ospf6_if->area->ospf6->lsdb; | |
835 | break; | |
836 | default: | |
837 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
838 | zlog_debug("Ignoring LSA of reserved scope"); | |
839 | continue; | |
840 | break; | |
841 | } | |
842 | ||
843 | /* Find database copy */ | |
844 | lsa = ospf6_lsdb_lookup(e->type, e->id, e->adv_router, lsdb); | |
845 | if (lsa == NULL) { | |
846 | char id[16], adv_router[16]; | |
847 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) { | |
848 | inet_ntop(AF_INET, &e->id, id, sizeof(id)); | |
849 | inet_ntop(AF_INET, &e->adv_router, adv_router, | |
850 | sizeof(adv_router)); | |
851 | zlog_debug( | |
852 | "Can't find requested [%s Id:%s Adv:%s]", | |
853 | ospf6_lstype_name(e->type), id, | |
854 | adv_router); | |
855 | } | |
856 | thread_add_event(master, bad_lsreq, on, 0, NULL); | |
857 | return; | |
858 | } | |
859 | ||
860 | ospf6_lsdb_add(ospf6_lsa_copy(lsa), on->lsupdate_list); | |
861 | } | |
862 | ||
863 | assert(p == OSPF6_MESSAGE_END(oh)); | |
864 | ||
865 | /* schedule send lsupdate */ | |
866 | THREAD_OFF(on->thread_send_lsupdate); | |
867 | thread_add_event(master, ospf6_lsupdate_send_neighbor, on, 0, | |
868 | &on->thread_send_lsupdate); | |
718e3744 | 869 | } |
870 | ||
abc7ef44 DO |
871 | /* Verify, that the specified memory area contains exactly N valid IPv6 |
872 | prefixes as specified by RFC5340, A.4.1. */ | |
d62a17ae | 873 | static unsigned ospf6_prefixes_examin( |
874 | struct ospf6_prefix *current, /* start of buffer */ | |
875 | unsigned length, | |
d7c0a89a | 876 | const uint32_t req_num_pfxs /* always compared with the actual number |
d62a17ae | 877 | of prefixes */ |
d7c0a89a | 878 | ) |
abc7ef44 | 879 | { |
d7c0a89a QY |
880 | uint8_t requested_pfx_bytes; |
881 | uint32_t real_num_pfxs = 0; | |
d62a17ae | 882 | |
883 | while (length) { | |
884 | if (length < OSPF6_PREFIX_MIN_SIZE) { | |
885 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
886 | RECV)) | |
887 | zlog_debug("%s: undersized IPv6 prefix header", | |
888 | __func__); | |
889 | return MSG_NG; | |
890 | } | |
891 | /* safe to look deeper */ | |
892 | if (current->prefix_length > IPV6_MAX_BITLEN) { | |
893 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
894 | RECV)) | |
895 | zlog_debug("%s: invalid PrefixLength (%u bits)", | |
896 | __func__, current->prefix_length); | |
897 | return MSG_NG; | |
898 | } | |
899 | /* covers both fixed- and variable-sized fields */ | |
900 | requested_pfx_bytes = | |
901 | OSPF6_PREFIX_MIN_SIZE | |
902 | + OSPF6_PREFIX_SPACE(current->prefix_length); | |
903 | if (requested_pfx_bytes > length) { | |
904 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
905 | RECV)) | |
906 | zlog_debug("%s: undersized IPv6 prefix", | |
907 | __func__); | |
908 | return MSG_NG; | |
909 | } | |
910 | /* next prefix */ | |
911 | length -= requested_pfx_bytes; | |
912 | current = (struct ospf6_prefix *)((caddr_t)current | |
913 | + requested_pfx_bytes); | |
914 | real_num_pfxs++; | |
915 | } | |
916 | if (real_num_pfxs != req_num_pfxs) { | |
917 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
918 | zlog_debug( | |
919 | "%s: IPv6 prefix number mismatch (%u required, %u real)", | |
920 | __func__, req_num_pfxs, real_num_pfxs); | |
921 | return MSG_NG; | |
922 | } | |
923 | return MSG_OK; | |
abc7ef44 DO |
924 | } |
925 | ||
926 | /* Verify an LSA to have a valid length and dispatch further (where | |
927 | appropriate) to check if the contents, including nested IPv6 prefixes, | |
928 | is properly sized/aligned within the LSA. Note that this function gets | |
929 | LSA type in network byte order, uses in host byte order and passes to | |
930 | ospf6_lstype_name() in network byte order again. */ | |
d62a17ae | 931 | static unsigned ospf6_lsa_examin(struct ospf6_lsa_header *lsah, |
d7c0a89a QY |
932 | const uint16_t lsalen, |
933 | const uint8_t headeronly) | |
abc7ef44 | 934 | { |
d62a17ae | 935 | struct ospf6_intra_prefix_lsa *intra_prefix_lsa; |
936 | struct ospf6_as_external_lsa *as_external_lsa; | |
937 | struct ospf6_link_lsa *link_lsa; | |
938 | unsigned exp_length; | |
d7c0a89a QY |
939 | uint8_t ltindex; |
940 | uint16_t lsatype; | |
d62a17ae | 941 | |
942 | /* In case an additional minimum length constraint is defined for | |
943 | current | |
944 | LSA type, make sure that this constraint is met. */ | |
945 | lsatype = ntohs(lsah->type); | |
946 | ltindex = lsatype & OSPF6_LSTYPE_FCODE_MASK; | |
947 | if (ltindex < OSPF6_LSTYPE_SIZE && ospf6_lsa_minlen[ltindex] | |
948 | && lsalen < ospf6_lsa_minlen[ltindex] + OSPF6_LSA_HEADER_SIZE) { | |
949 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
950 | zlog_debug("%s: undersized (%u B) LSA", __func__, | |
951 | lsalen); | |
952 | return MSG_NG; | |
953 | } | |
954 | switch (lsatype) { | |
955 | case OSPF6_LSTYPE_ROUTER: | |
956 | /* RFC5340 A.4.3, LSA header + OSPF6_ROUTER_LSA_MIN_SIZE bytes | |
957 | followed | |
958 | by N>=0 interface descriptions. */ | |
959 | if ((lsalen - OSPF6_LSA_HEADER_SIZE - OSPF6_ROUTER_LSA_MIN_SIZE) | |
960 | % OSPF6_ROUTER_LSDESC_FIX_SIZE) { | |
961 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
962 | RECV)) | |
963 | zlog_debug( | |
964 | "%s: interface description alignment error", | |
965 | __func__); | |
966 | return MSG_NG; | |
967 | } | |
968 | break; | |
969 | case OSPF6_LSTYPE_NETWORK: | |
970 | /* RFC5340 A.4.4, LSA header + OSPF6_NETWORK_LSA_MIN_SIZE bytes | |
971 | followed by N>=0 attached router descriptions. */ | |
972 | if ((lsalen - OSPF6_LSA_HEADER_SIZE | |
973 | - OSPF6_NETWORK_LSA_MIN_SIZE) | |
974 | % OSPF6_NETWORK_LSDESC_FIX_SIZE) { | |
975 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
976 | RECV)) | |
977 | zlog_debug( | |
978 | "%s: router description alignment error", | |
979 | __func__); | |
980 | return MSG_NG; | |
981 | } | |
982 | break; | |
983 | case OSPF6_LSTYPE_INTER_PREFIX: | |
984 | /* RFC5340 A.4.5, LSA header + OSPF6_INTER_PREFIX_LSA_MIN_SIZE | |
985 | bytes | |
986 | followed by 3-4 fields of a single IPv6 prefix. */ | |
987 | if (headeronly) | |
988 | break; | |
989 | return ospf6_prefixes_examin( | |
990 | (struct ospf6_prefix | |
991 | *)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE | |
992 | + OSPF6_INTER_PREFIX_LSA_MIN_SIZE), | |
993 | lsalen - OSPF6_LSA_HEADER_SIZE | |
994 | - OSPF6_INTER_PREFIX_LSA_MIN_SIZE, | |
995 | 1); | |
996 | case OSPF6_LSTYPE_INTER_ROUTER: | |
997 | /* RFC5340 A.4.6, fixed-size LSA. */ | |
998 | if (lsalen | |
999 | > OSPF6_LSA_HEADER_SIZE + OSPF6_INTER_ROUTER_LSA_FIX_SIZE) { | |
1000 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1001 | RECV)) | |
1002 | zlog_debug("%s: oversized (%u B) LSA", __func__, | |
1003 | lsalen); | |
1004 | return MSG_NG; | |
1005 | } | |
1006 | break; | |
1007 | case OSPF6_LSTYPE_AS_EXTERNAL: /* RFC5340 A.4.7, same as A.4.8. */ | |
1008 | case OSPF6_LSTYPE_TYPE_7: | |
1009 | /* RFC5340 A.4.8, LSA header + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE | |
1010 | bytes | |
1011 | followed by 3-4 fields of IPv6 prefix and 3 conditional LSA | |
1012 | fields: | |
1013 | 16 bytes of forwarding address, 4 bytes of external route | |
1014 | tag, | |
1015 | 4 bytes of referenced link state ID. */ | |
1016 | if (headeronly) | |
1017 | break; | |
1018 | as_external_lsa = | |
1019 | (struct ospf6_as_external_lsa | |
1020 | *)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE); | |
1021 | exp_length = | |
1022 | OSPF6_LSA_HEADER_SIZE + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE; | |
1023 | /* To find out if the last optional field (Referenced Link State | |
1024 | ID) is | |
1025 | assumed in this LSA, we need to access fixed fields of the | |
1026 | IPv6 | |
1027 | prefix before ospf6_prefix_examin() confirms its sizing. */ | |
1028 | if (exp_length + OSPF6_PREFIX_MIN_SIZE > lsalen) { | |
1029 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1030 | RECV)) | |
1031 | zlog_debug("%s: undersized (%u B) LSA header", | |
1032 | __func__, lsalen); | |
1033 | return MSG_NG; | |
1034 | } | |
1035 | /* forwarding address */ | |
1036 | if (CHECK_FLAG(as_external_lsa->bits_metric, OSPF6_ASBR_BIT_F)) | |
1037 | exp_length += 16; | |
1038 | /* external route tag */ | |
1039 | if (CHECK_FLAG(as_external_lsa->bits_metric, OSPF6_ASBR_BIT_T)) | |
1040 | exp_length += 4; | |
1041 | /* referenced link state ID */ | |
1042 | if (as_external_lsa->prefix.u._prefix_referenced_lstype) | |
1043 | exp_length += 4; | |
1044 | /* All the fixed-size fields (mandatory and optional) must fit. | |
1045 | I.e., | |
1046 | this check does not include any IPv6 prefix fields. */ | |
1047 | if (exp_length > lsalen) { | |
1048 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1049 | RECV)) | |
1050 | zlog_debug("%s: undersized (%u B) LSA header", | |
1051 | __func__, lsalen); | |
1052 | return MSG_NG; | |
1053 | } | |
1054 | /* The last call completely covers the remainder (IPv6 prefix). | |
1055 | */ | |
1056 | return ospf6_prefixes_examin( | |
1057 | (struct ospf6_prefix | |
1058 | *)((caddr_t)as_external_lsa | |
1059 | + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE), | |
1060 | lsalen - exp_length, 1); | |
1061 | case OSPF6_LSTYPE_LINK: | |
1062 | /* RFC5340 A.4.9, LSA header + OSPF6_LINK_LSA_MIN_SIZE bytes | |
1063 | followed | |
1064 | by N>=0 IPv6 prefix blocks (with N declared beforehand). */ | |
1065 | if (headeronly) | |
1066 | break; | |
1067 | link_lsa = (struct ospf6_link_lsa *)((caddr_t)lsah | |
1068 | + OSPF6_LSA_HEADER_SIZE); | |
1069 | return ospf6_prefixes_examin( | |
1070 | (struct ospf6_prefix *)((caddr_t)link_lsa | |
1071 | + OSPF6_LINK_LSA_MIN_SIZE), | |
1072 | lsalen - OSPF6_LSA_HEADER_SIZE | |
1073 | - OSPF6_LINK_LSA_MIN_SIZE, | |
1074 | ntohl(link_lsa->prefix_num) /* 32 bits */ | |
9d303b37 | 1075 | ); |
d62a17ae | 1076 | case OSPF6_LSTYPE_INTRA_PREFIX: |
1077 | /* RFC5340 A.4.10, LSA header + OSPF6_INTRA_PREFIX_LSA_MIN_SIZE | |
1078 | bytes | |
1079 | followed by N>=0 IPv6 prefixes (with N declared beforehand). | |
1080 | */ | |
1081 | if (headeronly) | |
1082 | break; | |
1083 | intra_prefix_lsa = | |
1084 | (struct ospf6_intra_prefix_lsa | |
1085 | *)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE); | |
1086 | return ospf6_prefixes_examin( | |
1087 | (struct ospf6_prefix | |
1088 | *)((caddr_t)intra_prefix_lsa | |
1089 | + OSPF6_INTRA_PREFIX_LSA_MIN_SIZE), | |
1090 | lsalen - OSPF6_LSA_HEADER_SIZE | |
1091 | - OSPF6_INTRA_PREFIX_LSA_MIN_SIZE, | |
1092 | ntohs(intra_prefix_lsa->prefix_num) /* 16 bits */ | |
9d303b37 | 1093 | ); |
d62a17ae | 1094 | } |
1095 | /* No additional validation is possible for unknown LSA types, which are | |
1096 | themselves valid in OPSFv3, hence the default decision is to accept. | |
1097 | */ | |
1098 | return MSG_OK; | |
abc7ef44 DO |
1099 | } |
1100 | ||
1101 | /* Verify if the provided input buffer is a valid sequence of LSAs. This | |
1102 | includes verification of LSA blocks length/alignment and dispatching | |
1103 | of deeper-level checks. */ | |
1104 | static unsigned | |
d62a17ae | 1105 | ospf6_lsaseq_examin(struct ospf6_lsa_header *lsah, /* start of buffered data */ |
d7c0a89a | 1106 | size_t length, const uint8_t headeronly, |
d62a17ae | 1107 | /* When declared_num_lsas is not 0, compare it to the real |
1108 | number of LSAs | |
1109 | and treat the difference as an error. */ | |
d7c0a89a | 1110 | const uint32_t declared_num_lsas) |
abc7ef44 | 1111 | { |
d7c0a89a | 1112 | uint32_t counted_lsas = 0; |
d62a17ae | 1113 | |
1114 | while (length) { | |
d7c0a89a | 1115 | uint16_t lsalen; |
d62a17ae | 1116 | if (length < OSPF6_LSA_HEADER_SIZE) { |
1117 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1118 | RECV)) | |
1119 | zlog_debug( | |
1120 | "%s: undersized (%zu B) trailing (#%u) LSA header", | |
1121 | __func__, length, counted_lsas); | |
1122 | return MSG_NG; | |
1123 | } | |
1124 | /* save on ntohs() calls here and in the LSA validator */ | |
1125 | lsalen = OSPF6_LSA_SIZE(lsah); | |
1126 | if (lsalen < OSPF6_LSA_HEADER_SIZE) { | |
1127 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1128 | RECV)) | |
1129 | zlog_debug( | |
1130 | "%s: malformed LSA header #%u, declared length is %u B", | |
1131 | __func__, counted_lsas, lsalen); | |
1132 | return MSG_NG; | |
1133 | } | |
1134 | if (headeronly) { | |
1135 | /* less checks here and in ospf6_lsa_examin() */ | |
1136 | if (MSG_OK != ospf6_lsa_examin(lsah, lsalen, 1)) { | |
1137 | if (IS_OSPF6_DEBUG_MESSAGE( | |
1138 | OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1139 | zlog_debug( | |
1140 | "%s: anomaly in header-only %s LSA #%u", | |
1141 | __func__, | |
1142 | ospf6_lstype_name(lsah->type), | |
1143 | counted_lsas); | |
1144 | return MSG_NG; | |
1145 | } | |
1146 | lsah = (struct ospf6_lsa_header | |
1147 | *)((caddr_t)lsah | |
1148 | + OSPF6_LSA_HEADER_SIZE); | |
1149 | length -= OSPF6_LSA_HEADER_SIZE; | |
1150 | } else { | |
1151 | /* make sure the input buffer is deep enough before | |
1152 | * further checks */ | |
1153 | if (lsalen > length) { | |
1154 | if (IS_OSPF6_DEBUG_MESSAGE( | |
1155 | OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1156 | zlog_debug( | |
1157 | "%s: anomaly in %s LSA #%u: declared length is %u B, buffered length is %zu B", | |
1158 | __func__, | |
1159 | ospf6_lstype_name(lsah->type), | |
1160 | counted_lsas, lsalen, length); | |
1161 | return MSG_NG; | |
1162 | } | |
1163 | if (MSG_OK != ospf6_lsa_examin(lsah, lsalen, 0)) { | |
1164 | if (IS_OSPF6_DEBUG_MESSAGE( | |
1165 | OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1166 | zlog_debug( | |
1167 | "%s: anomaly in %s LSA #%u", | |
1168 | __func__, | |
1169 | ospf6_lstype_name(lsah->type), | |
1170 | counted_lsas); | |
1171 | return MSG_NG; | |
1172 | } | |
1173 | lsah = (struct ospf6_lsa_header *)((caddr_t)lsah | |
1174 | + lsalen); | |
1175 | length -= lsalen; | |
1176 | } | |
1177 | counted_lsas++; | |
1178 | } | |
1179 | ||
1180 | if (declared_num_lsas && counted_lsas != declared_num_lsas) { | |
1181 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1182 | zlog_debug( | |
1183 | "%s: #LSAs declared (%u) does not match actual (%u)", | |
1184 | __func__, declared_num_lsas, counted_lsas); | |
1185 | return MSG_NG; | |
1186 | } | |
1187 | return MSG_OK; | |
abc7ef44 DO |
1188 | } |
1189 | ||
1190 | /* Verify a complete OSPF packet for proper sizing/alignment. */ | |
d62a17ae | 1191 | static unsigned ospf6_packet_examin(struct ospf6_header *oh, |
1192 | const unsigned bytesonwire) | |
abc7ef44 | 1193 | { |
d62a17ae | 1194 | struct ospf6_lsupdate *lsupd; |
1195 | unsigned test; | |
1196 | ||
1197 | /* length, 1st approximation */ | |
1198 | if (bytesonwire < OSPF6_HEADER_SIZE) { | |
1199 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1200 | zlog_debug("%s: undersized (%u B) packet", __func__, | |
1201 | bytesonwire); | |
1202 | return MSG_NG; | |
1203 | } | |
1204 | /* Now it is safe to access header fields. */ | |
1205 | if (bytesonwire != ntohs(oh->length)) { | |
1206 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1207 | zlog_debug( | |
1ba43456 CS |
1208 | "%s: %s packet length error (%u real, %u declared)", |
1209 | __func__, lookup_msg(ospf6_message_type_str, | |
1210 | oh->type, NULL), | |
1211 | bytesonwire, ntohs(oh->length)); | |
d62a17ae | 1212 | return MSG_NG; |
1213 | } | |
1214 | /* version check */ | |
1215 | if (oh->version != OSPFV3_VERSION) { | |
1216 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1217 | zlog_debug("%s: invalid (%u) protocol version", | |
1218 | __func__, oh->version); | |
1219 | return MSG_NG; | |
1220 | } | |
1221 | /* length, 2nd approximation */ | |
1222 | if (oh->type < OSPF6_MESSAGE_TYPE_ALL && ospf6_packet_minlen[oh->type] | |
1223 | && bytesonwire | |
1224 | < OSPF6_HEADER_SIZE + ospf6_packet_minlen[oh->type]) { | |
1225 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1226 | zlog_debug("%s: undersized (%u B) %s packet", __func__, | |
1227 | bytesonwire, | |
1228 | lookup_msg(ospf6_message_type_str, oh->type, | |
1229 | NULL)); | |
1230 | return MSG_NG; | |
1231 | } | |
1232 | /* type-specific deeper validation */ | |
1233 | switch (oh->type) { | |
1234 | case OSPF6_MESSAGE_TYPE_HELLO: | |
1235 | /* RFC5340 A.3.2, packet header + OSPF6_HELLO_MIN_SIZE bytes | |
1236 | followed | |
1237 | by N>=0 router-IDs. */ | |
1238 | if (0 | |
1239 | == (bytesonwire - OSPF6_HEADER_SIZE - OSPF6_HELLO_MIN_SIZE) | |
1240 | % 4) | |
1241 | return MSG_OK; | |
1242 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1243 | zlog_debug("%s: alignment error in %s packet", __func__, | |
1244 | lookup_msg(ospf6_message_type_str, oh->type, | |
1245 | NULL)); | |
1246 | return MSG_NG; | |
1247 | case OSPF6_MESSAGE_TYPE_DBDESC: | |
1248 | /* RFC5340 A.3.3, packet header + OSPF6_DB_DESC_MIN_SIZE bytes | |
1249 | followed | |
1250 | by N>=0 header-only LSAs. */ | |
1251 | test = ospf6_lsaseq_examin( | |
1252 | (struct ospf6_lsa_header *)((caddr_t)oh | |
1253 | + OSPF6_HEADER_SIZE | |
1254 | + OSPF6_DB_DESC_MIN_SIZE), | |
1255 | bytesonwire - OSPF6_HEADER_SIZE | |
1256 | - OSPF6_DB_DESC_MIN_SIZE, | |
1257 | 1, 0); | |
1258 | break; | |
1259 | case OSPF6_MESSAGE_TYPE_LSREQ: | |
1260 | /* RFC5340 A.3.4, packet header + N>=0 LS description blocks. */ | |
1261 | if (0 | |
1262 | == (bytesonwire - OSPF6_HEADER_SIZE - OSPF6_LS_REQ_MIN_SIZE) | |
1263 | % OSPF6_LSREQ_LSDESC_FIX_SIZE) | |
1264 | return MSG_OK; | |
1265 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1266 | zlog_debug("%s: alignment error in %s packet", __func__, | |
1267 | lookup_msg(ospf6_message_type_str, oh->type, | |
1268 | NULL)); | |
1269 | return MSG_NG; | |
1270 | case OSPF6_MESSAGE_TYPE_LSUPDATE: | |
1271 | /* RFC5340 A.3.5, packet header + OSPF6_LS_UPD_MIN_SIZE bytes | |
1272 | followed | |
1273 | by N>=0 full LSAs (with N declared beforehand). */ | |
1274 | lsupd = (struct ospf6_lsupdate *)((caddr_t)oh | |
1275 | + OSPF6_HEADER_SIZE); | |
1276 | test = ospf6_lsaseq_examin( | |
1277 | (struct ospf6_lsa_header *)((caddr_t)lsupd | |
1278 | + OSPF6_LS_UPD_MIN_SIZE), | |
1279 | bytesonwire - OSPF6_HEADER_SIZE - OSPF6_LS_UPD_MIN_SIZE, | |
1280 | 0, ntohl(lsupd->lsa_number) /* 32 bits */ | |
9d303b37 | 1281 | ); |
d62a17ae | 1282 | break; |
1283 | case OSPF6_MESSAGE_TYPE_LSACK: | |
1284 | /* RFC5340 A.3.6, packet header + N>=0 header-only LSAs. */ | |
1285 | test = ospf6_lsaseq_examin( | |
1286 | (struct ospf6_lsa_header *)((caddr_t)oh | |
1287 | + OSPF6_HEADER_SIZE | |
1288 | + OSPF6_LS_ACK_MIN_SIZE), | |
1289 | bytesonwire - OSPF6_HEADER_SIZE - OSPF6_LS_ACK_MIN_SIZE, | |
1290 | 1, 0); | |
1291 | break; | |
1292 | default: | |
1293 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1294 | zlog_debug("%s: invalid (%u) message type", __func__, | |
1295 | oh->type); | |
1296 | return MSG_NG; | |
1297 | } | |
1298 | if (test != MSG_OK | |
1299 | && IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1300 | zlog_debug("%s: anomaly in %s packet", __func__, | |
1301 | lookup_msg(ospf6_message_type_str, oh->type, NULL)); | |
1302 | return test; | |
abc7ef44 DO |
1303 | } |
1304 | ||
1305 | /* Verify particular fields of otherwise correct received OSPF packet to | |
1306 | meet the requirements of RFC. */ | |
d62a17ae | 1307 | static int ospf6_rxpacket_examin(struct ospf6_interface *oi, |
1308 | struct ospf6_header *oh, | |
1309 | const unsigned bytesonwire) | |
abc7ef44 | 1310 | { |
d62a17ae | 1311 | char buf[2][INET_ADDRSTRLEN]; |
1312 | ||
1313 | if (MSG_OK != ospf6_packet_examin(oh, bytesonwire)) | |
1314 | return MSG_NG; | |
1315 | ||
1316 | /* Area-ID check */ | |
1317 | if (oh->area_id != oi->area->area_id) { | |
1318 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) { | |
1319 | if (oh->area_id == OSPF_AREA_BACKBONE) | |
1320 | zlog_debug( | |
1321 | "%s: Message may be via Virtual Link: not supported", | |
1322 | __func__); | |
1323 | else | |
1324 | zlog_debug( | |
1325 | "%s: Area-ID mismatch (my %s, rcvd %s)", | |
1326 | __func__, | |
1327 | inet_ntop(AF_INET, &oi->area->area_id, | |
1328 | buf[0], INET_ADDRSTRLEN), | |
1329 | inet_ntop(AF_INET, &oh->area_id, buf[1], | |
1330 | INET_ADDRSTRLEN)); | |
1331 | } | |
1332 | return MSG_NG; | |
1333 | } | |
1334 | ||
1335 | /* Instance-ID check */ | |
1336 | if (oh->instance_id != oi->instance_id) { | |
1337 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1338 | zlog_debug("%s: Instance-ID mismatch (my %u, rcvd %u)", | |
1339 | __func__, oi->instance_id, oh->instance_id); | |
1340 | return MSG_NG; | |
1341 | } | |
1342 | ||
1343 | /* Router-ID check */ | |
1344 | if (oh->router_id == oi->area->ospf6->router_id) { | |
1345 | zlog_warn("%s: Duplicate Router-ID (%s)", __func__, | |
1346 | inet_ntop(AF_INET, &oh->router_id, buf[0], | |
1347 | INET_ADDRSTRLEN)); | |
1348 | return MSG_NG; | |
1349 | } | |
1350 | return MSG_OK; | |
abc7ef44 DO |
1351 | } |
1352 | ||
d62a17ae | 1353 | static void ospf6_lsupdate_recv(struct in6_addr *src, struct in6_addr *dst, |
1354 | struct ospf6_interface *oi, | |
1355 | struct ospf6_header *oh) | |
718e3744 | 1356 | { |
d62a17ae | 1357 | struct ospf6_neighbor *on; |
1358 | struct ospf6_lsupdate *lsupdate; | |
1359 | char *p; | |
1360 | ||
1361 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
1362 | if (on == NULL) { | |
1363 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1364 | zlog_debug("Neighbor not found, ignore"); | |
1365 | return; | |
1366 | } | |
1367 | ||
1368 | if (on->state != OSPF6_NEIGHBOR_EXCHANGE | |
1369 | && on->state != OSPF6_NEIGHBOR_LOADING | |
1370 | && on->state != OSPF6_NEIGHBOR_FULL) { | |
1371 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1372 | zlog_debug("Neighbor state less than Exchange, ignore"); | |
1373 | return; | |
1374 | } | |
1375 | ||
1376 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
1377 | + sizeof(struct ospf6_header)); | |
718e3744 | 1378 | |
43855e3d CS |
1379 | oi->ls_upd_in++; |
1380 | ||
d62a17ae | 1381 | /* Process LSAs */ |
1382 | for (p = (char *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); | |
1383 | p < OSPF6_MESSAGE_END(oh) | |
1384 | && p + OSPF6_LSA_SIZE(p) <= OSPF6_MESSAGE_END(oh); | |
1385 | p += OSPF6_LSA_SIZE(p)) { | |
1386 | ospf6_receive_lsa(on, (struct ospf6_lsa_header *)p); | |
1387 | } | |
1388 | ||
1389 | assert(p == OSPF6_MESSAGE_END(oh)); | |
508e53e2 | 1390 | } |
1391 | ||
d62a17ae | 1392 | static void ospf6_lsack_recv(struct in6_addr *src, struct in6_addr *dst, |
1393 | struct ospf6_interface *oi, | |
1394 | struct ospf6_header *oh) | |
508e53e2 | 1395 | { |
d62a17ae | 1396 | struct ospf6_neighbor *on; |
1397 | char *p; | |
1398 | struct ospf6_lsa *his, *mine; | |
1399 | struct ospf6_lsdb *lsdb = NULL; | |
1400 | ||
1401 | assert(oh->type == OSPF6_MESSAGE_TYPE_LSACK); | |
1402 | ||
1403 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
1404 | if (on == NULL) { | |
1405 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1406 | zlog_debug("Neighbor not found, ignore"); | |
1407 | return; | |
1408 | } | |
1409 | ||
1410 | if (on->state != OSPF6_NEIGHBOR_EXCHANGE | |
1411 | && on->state != OSPF6_NEIGHBOR_LOADING | |
1412 | && on->state != OSPF6_NEIGHBOR_FULL) { | |
1413 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1414 | zlog_debug("Neighbor state less than Exchange, ignore"); | |
1415 | return; | |
1416 | } | |
1417 | ||
43855e3d CS |
1418 | oi->ls_ack_in++; |
1419 | ||
d62a17ae | 1420 | for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header)); |
1421 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
1422 | p += sizeof(struct ospf6_lsa_header)) { | |
1423 | his = ospf6_lsa_create_headeronly((struct ospf6_lsa_header *)p); | |
1424 | ||
1425 | switch (OSPF6_LSA_SCOPE(his->header->type)) { | |
1426 | case OSPF6_SCOPE_LINKLOCAL: | |
1427 | lsdb = on->ospf6_if->lsdb; | |
1428 | break; | |
1429 | case OSPF6_SCOPE_AREA: | |
1430 | lsdb = on->ospf6_if->area->lsdb; | |
1431 | break; | |
1432 | case OSPF6_SCOPE_AS: | |
1433 | lsdb = on->ospf6_if->area->ospf6->lsdb; | |
1434 | break; | |
1435 | case OSPF6_SCOPE_RESERVED: | |
1436 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1437 | zlog_debug("Ignoring LSA of reserved scope"); | |
1438 | ospf6_lsa_delete(his); | |
1439 | continue; | |
1440 | break; | |
1441 | } | |
1442 | ||
1443 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1444 | zlog_debug("%s acknowledged by %s", his->name, | |
1445 | on->name); | |
1446 | ||
1447 | /* Find database copy */ | |
1448 | mine = ospf6_lsdb_lookup(his->header->type, his->header->id, | |
1449 | his->header->adv_router, lsdb); | |
1450 | if (mine == NULL) { | |
1451 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1452 | zlog_debug("No database copy"); | |
1453 | ospf6_lsa_delete(his); | |
1454 | continue; | |
1455 | } | |
1456 | ||
1457 | /* Check if the LSA is on his retrans-list */ | |
1458 | mine = ospf6_lsdb_lookup(his->header->type, his->header->id, | |
1459 | his->header->adv_router, | |
1460 | on->retrans_list); | |
1461 | if (mine == NULL) { | |
1462 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1463 | zlog_debug("Not on %s's retrans-list", | |
1464 | on->name); | |
1465 | ospf6_lsa_delete(his); | |
1466 | continue; | |
1467 | } | |
1468 | ||
1469 | if (ospf6_lsa_compare(his, mine) != 0) { | |
1470 | /* Log this questionable acknowledgement, | |
1471 | and examine the next one. */ | |
1472 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1473 | zlog_debug("Questionable acknowledgement"); | |
1474 | ospf6_lsa_delete(his); | |
1475 | continue; | |
1476 | } | |
1477 | ||
1478 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1479 | zlog_debug( | |
1480 | "Acknowledged, remove from %s's retrans-list", | |
1481 | on->name); | |
1482 | ||
1483 | ospf6_decrement_retrans_count(mine); | |
1484 | if (OSPF6_LSA_IS_MAXAGE(mine)) | |
1485 | ospf6_maxage_remove(on->ospf6_if->area->ospf6); | |
1486 | ospf6_lsdb_remove(mine, on->retrans_list); | |
1487 | ospf6_lsa_delete(his); | |
1488 | } | |
1489 | ||
1490 | assert(p == OSPF6_MESSAGE_END(oh)); | |
508e53e2 | 1491 | } |
1492 | ||
d7c0a89a QY |
1493 | static uint8_t *recvbuf = NULL; |
1494 | static uint8_t *sendbuf = NULL; | |
6ac29a51 | 1495 | static unsigned int iobuflen = 0; |
3b4cd3a9 | 1496 | |
d62a17ae | 1497 | int ospf6_iobuf_size(unsigned int size) |
3b4cd3a9 | 1498 | { |
d7c0a89a | 1499 | uint8_t *recvnew, *sendnew; |
d62a17ae | 1500 | |
1501 | if (size <= iobuflen) | |
1502 | return iobuflen; | |
1503 | ||
1504 | recvnew = XMALLOC(MTYPE_OSPF6_MESSAGE, size); | |
1505 | sendnew = XMALLOC(MTYPE_OSPF6_MESSAGE, size); | |
1506 | if (recvnew == NULL || sendnew == NULL) { | |
1507 | if (recvnew) | |
1508 | XFREE(MTYPE_OSPF6_MESSAGE, recvnew); | |
1509 | if (sendnew) | |
1510 | XFREE(MTYPE_OSPF6_MESSAGE, sendnew); | |
1511 | zlog_debug("Could not allocate I/O buffer of size %d.", size); | |
1512 | return iobuflen; | |
1513 | } | |
1514 | ||
1515 | if (recvbuf) | |
1516 | XFREE(MTYPE_OSPF6_MESSAGE, recvbuf); | |
1517 | if (sendbuf) | |
1518 | XFREE(MTYPE_OSPF6_MESSAGE, sendbuf); | |
1519 | recvbuf = recvnew; | |
1520 | sendbuf = sendnew; | |
1521 | iobuflen = size; | |
1522 | ||
1523 | return iobuflen; | |
3b4cd3a9 | 1524 | } |
508e53e2 | 1525 | |
d62a17ae | 1526 | void ospf6_message_terminate(void) |
ae2254aa | 1527 | { |
d62a17ae | 1528 | if (recvbuf) { |
1529 | XFREE(MTYPE_OSPF6_MESSAGE, recvbuf); | |
1530 | recvbuf = NULL; | |
1531 | } | |
1532 | ||
1533 | if (sendbuf) { | |
1534 | XFREE(MTYPE_OSPF6_MESSAGE, sendbuf); | |
1535 | sendbuf = NULL; | |
1536 | } | |
1537 | ||
1538 | iobuflen = 0; | |
ae2254aa TG |
1539 | } |
1540 | ||
d62a17ae | 1541 | int ospf6_receive(struct thread *thread) |
508e53e2 | 1542 | { |
d62a17ae | 1543 | int sockfd; |
1544 | unsigned int len; | |
1545 | char srcname[64], dstname[64]; | |
1546 | struct in6_addr src, dst; | |
1547 | ifindex_t ifindex; | |
1548 | struct iovec iovector[2]; | |
1549 | struct ospf6_interface *oi; | |
1550 | struct ospf6_header *oh; | |
1551 | ||
1552 | /* add next read thread */ | |
1553 | sockfd = THREAD_FD(thread); | |
1554 | thread_add_read(master, ospf6_receive, NULL, sockfd, NULL); | |
1555 | ||
1556 | /* initialize */ | |
1557 | memset(&src, 0, sizeof(src)); | |
1558 | memset(&dst, 0, sizeof(dst)); | |
1559 | ifindex = 0; | |
1560 | memset(recvbuf, 0, iobuflen); | |
1561 | iovector[0].iov_base = recvbuf; | |
1562 | iovector[0].iov_len = iobuflen; | |
1563 | iovector[1].iov_base = NULL; | |
1564 | iovector[1].iov_len = 0; | |
1565 | ||
1566 | /* receive message */ | |
1567 | len = ospf6_recvmsg(&src, &dst, &ifindex, iovector); | |
1568 | if (len > iobuflen) { | |
1569 | zlog_err("Excess message read"); | |
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | oi = ospf6_interface_lookup_by_ifindex(ifindex); | |
1574 | if (oi == NULL || oi->area == NULL | |
1575 | || CHECK_FLAG(oi->flag, OSPF6_INTERFACE_DISABLE)) { | |
e4c42d65 DS |
1576 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) |
1577 | zlog_debug("Message received on disabled interface"); | |
d62a17ae | 1578 | return 0; |
1579 | } | |
1580 | if (CHECK_FLAG(oi->flag, OSPF6_INTERFACE_PASSIVE)) { | |
1581 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1582 | zlog_debug("%s: Ignore message on passive interface %s", | |
1583 | __func__, oi->interface->name); | |
1584 | return 0; | |
1585 | } | |
1586 | ||
1587 | oh = (struct ospf6_header *)recvbuf; | |
1588 | if (ospf6_rxpacket_examin(oi, oh, len) != MSG_OK) | |
1589 | return 0; | |
1590 | ||
1591 | /* Being here means, that no sizing/alignment issues were detected in | |
1592 | the input packet. This renders the additional checks performed below | |
1593 | and also in the type-specific dispatching functions a dead code, | |
1594 | which can be dismissed in a cleanup-focused review round later. */ | |
1595 | ||
1596 | /* Log */ | |
1597 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) { | |
1598 | inet_ntop(AF_INET6, &src, srcname, sizeof(srcname)); | |
1599 | inet_ntop(AF_INET6, &dst, dstname, sizeof(dstname)); | |
1600 | zlog_debug("%s received on %s", | |
1601 | lookup_msg(ospf6_message_type_str, oh->type, NULL), | |
1602 | oi->interface->name); | |
1603 | zlog_debug(" src: %s", srcname); | |
1604 | zlog_debug(" dst: %s", dstname); | |
1605 | ||
1606 | switch (oh->type) { | |
1607 | case OSPF6_MESSAGE_TYPE_HELLO: | |
1608 | ospf6_hello_print(oh); | |
1609 | break; | |
1610 | case OSPF6_MESSAGE_TYPE_DBDESC: | |
1611 | ospf6_dbdesc_print(oh); | |
1612 | break; | |
1613 | case OSPF6_MESSAGE_TYPE_LSREQ: | |
1614 | ospf6_lsreq_print(oh); | |
1615 | break; | |
1616 | case OSPF6_MESSAGE_TYPE_LSUPDATE: | |
1617 | ospf6_lsupdate_print(oh); | |
1618 | break; | |
1619 | case OSPF6_MESSAGE_TYPE_LSACK: | |
1620 | ospf6_lsack_print(oh); | |
1621 | break; | |
1622 | default: | |
1623 | assert(0); | |
1624 | } | |
1625 | } | |
1626 | ||
1627 | switch (oh->type) { | |
1628 | case OSPF6_MESSAGE_TYPE_HELLO: | |
1629 | ospf6_hello_recv(&src, &dst, oi, oh); | |
1630 | break; | |
1631 | ||
1632 | case OSPF6_MESSAGE_TYPE_DBDESC: | |
1633 | ospf6_dbdesc_recv(&src, &dst, oi, oh); | |
1634 | break; | |
1635 | ||
1636 | case OSPF6_MESSAGE_TYPE_LSREQ: | |
1637 | ospf6_lsreq_recv(&src, &dst, oi, oh); | |
1638 | break; | |
1639 | ||
1640 | case OSPF6_MESSAGE_TYPE_LSUPDATE: | |
1641 | ospf6_lsupdate_recv(&src, &dst, oi, oh); | |
1642 | break; | |
1643 | ||
1644 | case OSPF6_MESSAGE_TYPE_LSACK: | |
1645 | ospf6_lsack_recv(&src, &dst, oi, oh); | |
1646 | break; | |
1647 | ||
1648 | default: | |
1649 | assert(0); | |
1650 | } | |
1651 | ||
1652 | return 0; | |
718e3744 | 1653 | } |
1654 | ||
d62a17ae | 1655 | static void ospf6_send(struct in6_addr *src, struct in6_addr *dst, |
1656 | struct ospf6_interface *oi, struct ospf6_header *oh) | |
718e3744 | 1657 | { |
d62a17ae | 1658 | unsigned int len; |
1659 | char srcname[64], dstname[64]; | |
1660 | struct iovec iovector[2]; | |
1661 | ||
1662 | /* initialize */ | |
1663 | iovector[0].iov_base = (caddr_t)oh; | |
1664 | iovector[0].iov_len = ntohs(oh->length); | |
1665 | iovector[1].iov_base = NULL; | |
1666 | iovector[1].iov_len = 0; | |
1667 | ||
1668 | /* fill OSPF header */ | |
1669 | oh->version = OSPFV3_VERSION; | |
1670 | /* message type must be set before */ | |
1671 | /* message length must be set before */ | |
1672 | oh->router_id = oi->area->ospf6->router_id; | |
1673 | oh->area_id = oi->area->area_id; | |
1674 | /* checksum is calculated by kernel */ | |
1675 | oh->instance_id = oi->instance_id; | |
1676 | oh->reserved = 0; | |
1677 | ||
1678 | /* Log */ | |
1679 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND)) { | |
1680 | inet_ntop(AF_INET6, dst, dstname, sizeof(dstname)); | |
1681 | if (src) | |
1682 | inet_ntop(AF_INET6, src, srcname, sizeof(srcname)); | |
1683 | else | |
1684 | memset(srcname, 0, sizeof(srcname)); | |
1685 | zlog_debug("%s send on %s", | |
1686 | lookup_msg(ospf6_message_type_str, oh->type, NULL), | |
1687 | oi->interface->name); | |
1688 | zlog_debug(" src: %s", srcname); | |
1689 | zlog_debug(" dst: %s", dstname); | |
1690 | ||
1691 | switch (oh->type) { | |
1692 | case OSPF6_MESSAGE_TYPE_HELLO: | |
1693 | ospf6_hello_print(oh); | |
1694 | break; | |
1695 | case OSPF6_MESSAGE_TYPE_DBDESC: | |
1696 | ospf6_dbdesc_print(oh); | |
1697 | break; | |
1698 | case OSPF6_MESSAGE_TYPE_LSREQ: | |
1699 | ospf6_lsreq_print(oh); | |
1700 | break; | |
1701 | case OSPF6_MESSAGE_TYPE_LSUPDATE: | |
1702 | ospf6_lsupdate_print(oh); | |
1703 | break; | |
1704 | case OSPF6_MESSAGE_TYPE_LSACK: | |
1705 | ospf6_lsack_print(oh); | |
1706 | break; | |
1707 | default: | |
1708 | zlog_debug("Unknown message"); | |
1709 | assert(0); | |
1710 | break; | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | /* send message */ | |
1715 | len = ospf6_sendmsg(src, dst, &oi->interface->ifindex, iovector); | |
1716 | if (len != ntohs(oh->length)) | |
1717 | zlog_err("Could not send entire message"); | |
718e3744 | 1718 | } |
1719 | ||
d62a17ae | 1720 | static uint32_t ospf6_packet_max(struct ospf6_interface *oi) |
681b84e8 | 1721 | { |
d62a17ae | 1722 | assert(oi->ifmtu > sizeof(struct ip6_hdr)); |
1723 | return oi->ifmtu - (sizeof(struct ip6_hdr)); | |
681b84e8 DT |
1724 | } |
1725 | ||
d62a17ae | 1726 | int ospf6_hello_send(struct thread *thread) |
718e3744 | 1727 | { |
d62a17ae | 1728 | struct ospf6_interface *oi; |
1729 | struct ospf6_header *oh; | |
1730 | struct ospf6_hello *hello; | |
d7c0a89a | 1731 | uint8_t *p; |
d62a17ae | 1732 | struct listnode *node, *nnode; |
1733 | struct ospf6_neighbor *on; | |
1734 | ||
1735 | oi = (struct ospf6_interface *)THREAD_ARG(thread); | |
1736 | oi->thread_send_hello = (struct thread *)NULL; | |
1737 | ||
1738 | if (oi->state <= OSPF6_INTERFACE_DOWN) { | |
1739 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_HELLO, SEND)) | |
1740 | zlog_debug("Unable to send Hello on down interface %s", | |
1741 | oi->interface->name); | |
1742 | return 0; | |
1743 | } | |
1744 | ||
1745 | if (iobuflen == 0) { | |
1746 | zlog_debug("Unable to send Hello on interface %s iobuflen is 0", | |
1747 | oi->interface->name); | |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | /* set next thread */ | |
1752 | thread_add_timer(master, ospf6_hello_send, oi, oi->hello_interval, | |
1753 | &oi->thread_send_hello); | |
1754 | ||
1755 | memset(sendbuf, 0, iobuflen); | |
1756 | oh = (struct ospf6_header *)sendbuf; | |
1757 | hello = (struct ospf6_hello *)((caddr_t)oh | |
1758 | + sizeof(struct ospf6_header)); | |
1759 | ||
1760 | hello->interface_id = htonl(oi->interface->ifindex); | |
1761 | hello->priority = oi->priority; | |
1762 | hello->options[0] = oi->area->options[0]; | |
1763 | hello->options[1] = oi->area->options[1]; | |
1764 | hello->options[2] = oi->area->options[2]; | |
1765 | hello->hello_interval = htons(oi->hello_interval); | |
1766 | hello->dead_interval = htons(oi->dead_interval); | |
1767 | hello->drouter = oi->drouter; | |
1768 | hello->bdrouter = oi->bdrouter; | |
1769 | ||
d7c0a89a | 1770 | p = (uint8_t *)((caddr_t)hello + sizeof(struct ospf6_hello)); |
d62a17ae | 1771 | |
1772 | for (ALL_LIST_ELEMENTS(oi->neighbor_list, node, nnode, on)) { | |
1773 | if (on->state < OSPF6_NEIGHBOR_INIT) | |
1774 | continue; | |
1775 | ||
d7c0a89a | 1776 | if (p - sendbuf + sizeof(uint32_t) > ospf6_packet_max(oi)) { |
d62a17ae | 1777 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_HELLO, |
1778 | SEND)) | |
1779 | zlog_debug( | |
1780 | "sending Hello message: exceeds I/F MTU"); | |
1781 | break; | |
1782 | } | |
1783 | ||
d7c0a89a QY |
1784 | memcpy(p, &on->router_id, sizeof(uint32_t)); |
1785 | p += sizeof(uint32_t); | |
d62a17ae | 1786 | } |
1787 | ||
1788 | oh->type = OSPF6_MESSAGE_TYPE_HELLO; | |
1789 | oh->length = htons(p - sendbuf); | |
1790 | ||
43855e3d CS |
1791 | oi->hello_out++; |
1792 | ||
d62a17ae | 1793 | ospf6_send(oi->linklocal_addr, &allspfrouters6, oi, oh); |
1794 | return 0; | |
718e3744 | 1795 | } |
1796 | ||
d62a17ae | 1797 | int ospf6_dbdesc_send(struct thread *thread) |
718e3744 | 1798 | { |
d62a17ae | 1799 | struct ospf6_neighbor *on; |
1800 | struct ospf6_header *oh; | |
1801 | struct ospf6_dbdesc *dbdesc; | |
d7c0a89a | 1802 | uint8_t *p; |
d62a17ae | 1803 | struct ospf6_lsa *lsa; |
1804 | struct in6_addr *dst; | |
1805 | ||
1806 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
1807 | on->thread_send_dbdesc = (struct thread *)NULL; | |
1808 | ||
1809 | if (on->state < OSPF6_NEIGHBOR_EXSTART) { | |
1810 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_DBDESC, SEND)) | |
1811 | zlog_debug( | |
1812 | "Quit to send DbDesc to neighbor %s state %s", | |
1813 | on->name, ospf6_neighbor_state_str[on->state]); | |
1814 | return 0; | |
1815 | } | |
1816 | ||
1817 | /* set next thread if master */ | |
1818 | if (CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT)) | |
1819 | thread_add_timer(master, ospf6_dbdesc_send, on, | |
1820 | on->ospf6_if->rxmt_interval, | |
1821 | &on->thread_send_dbdesc); | |
1822 | ||
1823 | memset(sendbuf, 0, iobuflen); | |
1824 | oh = (struct ospf6_header *)sendbuf; | |
1825 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh | |
1826 | + sizeof(struct ospf6_header)); | |
1827 | ||
1828 | /* if this is initial one, initialize sequence number for DbDesc */ | |
1829 | if (CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_IBIT) | |
1830 | && (on->dbdesc_seqnum == 0)) { | |
1831 | on->dbdesc_seqnum = monotime(NULL); | |
1832 | } | |
1833 | ||
1834 | dbdesc->options[0] = on->ospf6_if->area->options[0]; | |
1835 | dbdesc->options[1] = on->ospf6_if->area->options[1]; | |
1836 | dbdesc->options[2] = on->ospf6_if->area->options[2]; | |
1837 | dbdesc->ifmtu = htons(on->ospf6_if->ifmtu); | |
1838 | dbdesc->bits = on->dbdesc_bits; | |
1839 | dbdesc->seqnum = htonl(on->dbdesc_seqnum); | |
1840 | ||
1841 | /* if this is not initial one, set LSA headers in dbdesc */ | |
d7c0a89a | 1842 | p = (uint8_t *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc)); |
d62a17ae | 1843 | if (!CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_IBIT)) { |
1844 | for (ALL_LSDB(on->dbdesc_list, lsa)) { | |
1845 | ospf6_lsa_age_update_to_send(lsa, | |
1846 | on->ospf6_if->transdelay); | |
1847 | ||
1848 | /* MTU check */ | |
1849 | if (p - sendbuf + sizeof(struct ospf6_lsa_header) | |
1850 | > ospf6_packet_max(on->ospf6_if)) { | |
1851 | ospf6_lsdb_lsa_unlock(lsa); | |
1852 | break; | |
1853 | } | |
1854 | memcpy(p, lsa->header, sizeof(struct ospf6_lsa_header)); | |
1855 | p += sizeof(struct ospf6_lsa_header); | |
1856 | } | |
1857 | } | |
1858 | ||
1859 | oh->type = OSPF6_MESSAGE_TYPE_DBDESC; | |
1860 | oh->length = htons(p - sendbuf); | |
1861 | ||
1862 | ||
1863 | if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT) | |
1864 | dst = &allspfrouters6; | |
1865 | else | |
1866 | dst = &on->linklocal_addr; | |
1867 | ||
43855e3d CS |
1868 | on->ospf6_if->db_desc_out++; |
1869 | ||
d62a17ae | 1870 | ospf6_send(on->ospf6_if->linklocal_addr, dst, on->ospf6_if, oh); |
1871 | ||
1872 | return 0; | |
718e3744 | 1873 | } |
1874 | ||
d62a17ae | 1875 | int ospf6_dbdesc_send_newone(struct thread *thread) |
718e3744 | 1876 | { |
d62a17ae | 1877 | struct ospf6_neighbor *on; |
1878 | struct ospf6_lsa *lsa; | |
1879 | unsigned int size = 0; | |
1880 | ||
1881 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
1882 | ospf6_lsdb_remove_all(on->dbdesc_list); | |
1883 | ||
1884 | /* move LSAs from summary_list to dbdesc_list (within neighbor | |
1885 | structure) | |
1886 | so that ospf6_send_dbdesc () can send those LSAs */ | |
1887 | size = sizeof(struct ospf6_lsa_header) + sizeof(struct ospf6_dbdesc); | |
1888 | for (ALL_LSDB(on->summary_list, lsa)) { | |
1889 | if (size + sizeof(struct ospf6_lsa_header) | |
1890 | > ospf6_packet_max(on->ospf6_if)) { | |
1891 | ospf6_lsdb_lsa_unlock(lsa); | |
1892 | break; | |
1893 | } | |
1894 | ||
1895 | ospf6_lsdb_add(ospf6_lsa_copy(lsa), on->dbdesc_list); | |
1896 | ospf6_lsdb_remove(lsa, on->summary_list); | |
1897 | size += sizeof(struct ospf6_lsa_header); | |
1898 | } | |
1899 | ||
1900 | if (on->summary_list->count == 0) | |
1901 | UNSET_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT); | |
1902 | ||
1903 | /* If slave, More bit check must be done here */ | |
1904 | if (!CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT) && /* Slave */ | |
1905 | !CHECK_FLAG(on->dbdesc_last.bits, OSPF6_DBDESC_MBIT) | |
1906 | && !CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT)) | |
1907 | thread_add_event(master, exchange_done, on, 0, NULL); | |
1908 | ||
1909 | thread_execute(master, ospf6_dbdesc_send, on, 0); | |
1910 | return 0; | |
508e53e2 | 1911 | } |
718e3744 | 1912 | |
d62a17ae | 1913 | int ospf6_lsreq_send(struct thread *thread) |
508e53e2 | 1914 | { |
d62a17ae | 1915 | struct ospf6_neighbor *on; |
1916 | struct ospf6_header *oh; | |
1917 | struct ospf6_lsreq_entry *e; | |
d7c0a89a | 1918 | uint8_t *p; |
d62a17ae | 1919 | struct ospf6_lsa *lsa, *last_req; |
1920 | ||
1921 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
1922 | on->thread_send_lsreq = (struct thread *)NULL; | |
1923 | ||
1924 | /* LSReq will be sent only in ExStart or Loading */ | |
1925 | if (on->state != OSPF6_NEIGHBOR_EXCHANGE | |
1926 | && on->state != OSPF6_NEIGHBOR_LOADING) { | |
1927 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSREQ, SEND)) | |
1928 | zlog_debug("Quit to send LSReq to neighbor %s state %s", | |
1929 | on->name, | |
1930 | ospf6_neighbor_state_str[on->state]); | |
1931 | return 0; | |
1932 | } | |
1933 | ||
1934 | /* schedule loading_done if request list is empty */ | |
1935 | if (on->request_list->count == 0) { | |
1936 | thread_add_event(master, loading_done, on, 0, NULL); | |
1937 | return 0; | |
1938 | } | |
1939 | ||
1940 | memset(sendbuf, 0, iobuflen); | |
1941 | oh = (struct ospf6_header *)sendbuf; | |
1942 | last_req = NULL; | |
1943 | ||
1944 | /* set Request entries in lsreq */ | |
d7c0a89a | 1945 | p = (uint8_t *)((caddr_t)oh + sizeof(struct ospf6_header)); |
d62a17ae | 1946 | for (ALL_LSDB(on->request_list, lsa)) { |
1947 | /* MTU check */ | |
1948 | if (p - sendbuf + sizeof(struct ospf6_lsreq_entry) | |
1949 | > ospf6_packet_max(on->ospf6_if)) { | |
1950 | ospf6_lsdb_lsa_unlock(lsa); | |
1951 | break; | |
1952 | } | |
1953 | ||
1954 | e = (struct ospf6_lsreq_entry *)p; | |
1955 | e->type = lsa->header->type; | |
1956 | e->id = lsa->header->id; | |
1957 | e->adv_router = lsa->header->adv_router; | |
1958 | p += sizeof(struct ospf6_lsreq_entry); | |
1959 | last_req = lsa; | |
1960 | } | |
1961 | ||
1962 | if (last_req != NULL) { | |
1963 | if (on->last_ls_req != NULL) { | |
1964 | ospf6_lsa_unlock(on->last_ls_req); | |
1965 | } | |
1966 | ospf6_lsa_lock(last_req); | |
1967 | on->last_ls_req = last_req; | |
1968 | } | |
1969 | ||
1970 | oh->type = OSPF6_MESSAGE_TYPE_LSREQ; | |
1971 | oh->length = htons(p - sendbuf); | |
1972 | ||
43855e3d CS |
1973 | on->ospf6_if->ls_req_out++; |
1974 | ||
d62a17ae | 1975 | if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT) |
1976 | ospf6_send(on->ospf6_if->linklocal_addr, &allspfrouters6, | |
1977 | on->ospf6_if, oh); | |
1978 | else | |
1979 | ospf6_send(on->ospf6_if->linklocal_addr, &on->linklocal_addr, | |
1980 | on->ospf6_if, oh); | |
1981 | ||
1982 | /* set next thread */ | |
1983 | if (on->request_list->count != 0) { | |
1984 | on->thread_send_lsreq = NULL; | |
1985 | thread_add_timer(master, ospf6_lsreq_send, on, | |
1986 | on->ospf6_if->rxmt_interval, | |
1987 | &on->thread_send_lsreq); | |
1988 | } | |
1989 | ||
1990 | return 0; | |
718e3744 | 1991 | } |
1992 | ||
1ba43456 CS |
1993 | static void ospf6_send_lsupdate(struct ospf6_neighbor *on, |
1994 | struct ospf6_interface *oi, | |
1995 | struct ospf6_header *oh) | |
1996 | { | |
1997 | ||
1998 | if (on) { | |
43855e3d CS |
1999 | on->ospf6_if->ls_upd_out++; |
2000 | ||
996c9314 LB |
2001 | if ((on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT) |
2002 | || (on->ospf6_if->state == OSPF6_INTERFACE_DR) | |
2003 | || (on->ospf6_if->state == OSPF6_INTERFACE_BDR)) { | |
1ba43456 CS |
2004 | ospf6_send(on->ospf6_if->linklocal_addr, |
2005 | &allspfrouters6, on->ospf6_if, oh); | |
2006 | } else { | |
2007 | ospf6_send(on->ospf6_if->linklocal_addr, | |
2008 | &on->linklocal_addr, on->ospf6_if, oh); | |
2009 | } | |
2010 | } else if (oi) { | |
43855e3d CS |
2011 | |
2012 | oi->ls_upd_out++; | |
2013 | ||
996c9314 LB |
2014 | if ((oi->state == OSPF6_INTERFACE_POINTTOPOINT) |
2015 | || (oi->state == OSPF6_INTERFACE_DR) | |
2016 | || (oi->state == OSPF6_INTERFACE_BDR)) { | |
1ba43456 CS |
2017 | ospf6_send(oi->linklocal_addr, &allspfrouters6, oi, oh); |
2018 | } else { | |
2019 | ospf6_send(oi->linklocal_addr, &alldrouters6, oi, oh); | |
2020 | } | |
2021 | } | |
2022 | } | |
2023 | ||
d62a17ae | 2024 | int ospf6_lsupdate_send_neighbor(struct thread *thread) |
718e3744 | 2025 | { |
d62a17ae | 2026 | struct ospf6_neighbor *on; |
2027 | struct ospf6_header *oh; | |
2028 | struct ospf6_lsupdate *lsupdate; | |
d7c0a89a | 2029 | uint8_t *p; |
d62a17ae | 2030 | int lsa_cnt; |
2031 | struct ospf6_lsa *lsa; | |
2032 | ||
2033 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
2034 | on->thread_send_lsupdate = (struct thread *)NULL; | |
2035 | ||
2036 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) | |
2037 | zlog_debug("LSUpdate to neighbor %s", on->name); | |
2038 | ||
2039 | if (on->state < OSPF6_NEIGHBOR_EXCHANGE) { | |
2040 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) | |
2041 | zlog_debug("Quit to send (neighbor state %s)", | |
2042 | ospf6_neighbor_state_str[on->state]); | |
2043 | return 0; | |
2044 | } | |
2045 | ||
2046 | memset(sendbuf, 0, iobuflen); | |
2047 | oh = (struct ospf6_header *)sendbuf; | |
2048 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
2049 | + sizeof(struct ospf6_header)); | |
2050 | ||
d7c0a89a | 2051 | p = (uint8_t *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
d62a17ae | 2052 | lsa_cnt = 0; |
2053 | ||
2054 | /* lsupdate_list lists those LSA which doesn't need to be | |
2055 | retransmitted. remove those from the list */ | |
2056 | for (ALL_LSDB(on->lsupdate_list, lsa)) { | |
2057 | /* MTU check */ | |
2058 | if ((p - sendbuf + (unsigned int)OSPF6_LSA_SIZE(lsa->header)) | |
2059 | > ospf6_packet_max(on->ospf6_if)) { | |
1ba43456 CS |
2060 | if (lsa_cnt) { |
2061 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2062 | oh->length = htons(p - sendbuf); | |
2063 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2064 | ||
2065 | ospf6_send_lsupdate(on, NULL, oh); | |
2066 | ||
2067 | memset(sendbuf, 0, iobuflen); | |
2068 | oh = (struct ospf6_header *)sendbuf; | |
996c9314 LB |
2069 | lsupdate = (struct ospf6_lsupdate |
2070 | *)((caddr_t)oh | |
2071 | + sizeof(struct | |
2072 | ospf6_header)); | |
1ba43456 | 2073 | |
d7c0a89a QY |
2074 | p = (uint8_t *)((caddr_t)lsupdate |
2075 | + sizeof(struct | |
2076 | ospf6_lsupdate)); | |
1ba43456 CS |
2077 | lsa_cnt = 0; |
2078 | } | |
d62a17ae | 2079 | } |
2080 | ||
2081 | ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay); | |
2082 | memcpy(p, lsa->header, OSPF6_LSA_SIZE(lsa->header)); | |
2083 | p += OSPF6_LSA_SIZE(lsa->header); | |
2084 | lsa_cnt++; | |
2085 | ||
2086 | assert(lsa->lock == 2); | |
2087 | ospf6_lsdb_remove(lsa, on->lsupdate_list); | |
2088 | } | |
2089 | ||
2090 | if (lsa_cnt) { | |
2091 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2092 | oh->length = htons(p - sendbuf); | |
2093 | lsupdate->lsa_number = htonl(lsa_cnt); | |
1ba43456 | 2094 | ospf6_send_lsupdate(on, NULL, oh); |
d62a17ae | 2095 | } |
2096 | ||
2097 | /* The addresses used for retransmissions are different from those sent | |
2098 | the | |
2099 | first time and so we need to separate them here. | |
2100 | */ | |
2101 | memset(sendbuf, 0, iobuflen); | |
2102 | oh = (struct ospf6_header *)sendbuf; | |
2103 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
2104 | + sizeof(struct ospf6_header)); | |
d7c0a89a | 2105 | p = (uint8_t *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
d62a17ae | 2106 | lsa_cnt = 0; |
2107 | ||
2108 | for (ALL_LSDB(on->retrans_list, lsa)) { | |
2109 | /* MTU check */ | |
2110 | if ((p - sendbuf + (unsigned int)OSPF6_LSA_SIZE(lsa->header)) | |
2111 | > ospf6_packet_max(on->ospf6_if)) { | |
1ba43456 CS |
2112 | if (lsa_cnt) { |
2113 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2114 | oh->length = htons(p - sendbuf); | |
2115 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2116 | ||
996c9314 LB |
2117 | if (on->ospf6_if->state |
2118 | == OSPF6_INTERFACE_POINTTOPOINT) { | |
1ba43456 CS |
2119 | ospf6_send(on->ospf6_if->linklocal_addr, |
2120 | &allspfrouters6, | |
2121 | on->ospf6_if, oh); | |
2122 | } else { | |
2123 | ospf6_send(on->ospf6_if->linklocal_addr, | |
2124 | &on->linklocal_addr, | |
2125 | on->ospf6_if, oh); | |
2126 | } | |
2127 | ||
2128 | memset(sendbuf, 0, iobuflen); | |
2129 | oh = (struct ospf6_header *)sendbuf; | |
996c9314 LB |
2130 | lsupdate = (struct ospf6_lsupdate |
2131 | *)((caddr_t)oh | |
2132 | + sizeof(struct | |
2133 | ospf6_header)); | |
d7c0a89a QY |
2134 | p = (uint8_t *)((caddr_t)lsupdate |
2135 | + sizeof(struct | |
2136 | ospf6_lsupdate)); | |
1ba43456 CS |
2137 | lsa_cnt = 0; |
2138 | } | |
d62a17ae | 2139 | } |
2140 | ||
2141 | ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay); | |
2142 | memcpy(p, lsa->header, OSPF6_LSA_SIZE(lsa->header)); | |
2143 | p += OSPF6_LSA_SIZE(lsa->header); | |
2144 | lsa_cnt++; | |
2145 | } | |
2146 | ||
2147 | if (lsa_cnt) { | |
2148 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2149 | oh->length = htons(p - sendbuf); | |
2150 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2151 | ||
2152 | if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT) | |
2153 | ospf6_send(on->ospf6_if->linklocal_addr, | |
2154 | &allspfrouters6, on->ospf6_if, oh); | |
2155 | else | |
2156 | ospf6_send(on->ospf6_if->linklocal_addr, | |
2157 | &on->linklocal_addr, on->ospf6_if, oh); | |
2158 | } | |
2159 | ||
2160 | if (on->lsupdate_list->count != 0) { | |
2161 | on->thread_send_lsupdate = NULL; | |
2162 | thread_add_event(master, ospf6_lsupdate_send_neighbor, on, 0, | |
2163 | &on->thread_send_lsupdate); | |
2164 | } else if (on->retrans_list->count != 0) { | |
2165 | on->thread_send_lsupdate = NULL; | |
2166 | thread_add_timer(master, ospf6_lsupdate_send_neighbor, on, | |
2167 | on->ospf6_if->rxmt_interval, | |
2168 | &on->thread_send_lsupdate); | |
2169 | } | |
2170 | return 0; | |
718e3744 | 2171 | } |
2172 | ||
76249532 CS |
2173 | int ospf6_lsupdate_send_neighbor_now(struct ospf6_neighbor *on, |
2174 | struct ospf6_lsa *lsa) | |
2175 | { | |
2176 | struct ospf6_header *oh; | |
2177 | struct ospf6_lsupdate *lsupdate; | |
d7c0a89a | 2178 | uint8_t *p; |
76249532 CS |
2179 | int lsa_cnt = 0; |
2180 | ||
2181 | memset(sendbuf, 0, iobuflen); | |
2182 | oh = (struct ospf6_header *)sendbuf; | |
2183 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
2184 | + sizeof(struct ospf6_header)); | |
2185 | ||
d7c0a89a | 2186 | p = (uint8_t *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
76249532 CS |
2187 | ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay); |
2188 | memcpy(p, lsa->header, OSPF6_LSA_SIZE(lsa->header)); | |
2189 | p += OSPF6_LSA_SIZE(lsa->header); | |
2190 | lsa_cnt++; | |
2191 | ||
2192 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2193 | oh->length = htons(p - sendbuf); | |
2194 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2195 | ||
996c9314 LB |
2196 | if (IS_OSPF6_DEBUG_FLOODING |
2197 | || IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) | |
76249532 | 2198 | zlog_debug("%s: Send lsupdate with lsa %s (age %u)", |
996c9314 LB |
2199 | __PRETTY_FUNCTION__, lsa->name, |
2200 | ntohs(lsa->header->age)); | |
76249532 CS |
2201 | |
2202 | ospf6_send_lsupdate(on, NULL, oh); | |
2203 | ||
2204 | return 0; | |
2205 | } | |
2206 | ||
d62a17ae | 2207 | int ospf6_lsupdate_send_interface(struct thread *thread) |
718e3744 | 2208 | { |
d62a17ae | 2209 | struct ospf6_interface *oi; |
2210 | struct ospf6_header *oh; | |
2211 | struct ospf6_lsupdate *lsupdate; | |
d7c0a89a | 2212 | uint8_t *p; |
d62a17ae | 2213 | int lsa_cnt; |
2214 | struct ospf6_lsa *lsa; | |
2215 | ||
2216 | oi = (struct ospf6_interface *)THREAD_ARG(thread); | |
2217 | oi->thread_send_lsupdate = (struct thread *)NULL; | |
2218 | ||
2219 | if (oi->state <= OSPF6_INTERFACE_WAITING) { | |
2220 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) | |
2221 | zlog_debug( | |
2222 | "Quit to send LSUpdate to interface %s state %s", | |
2223 | oi->interface->name, | |
2224 | ospf6_interface_state_str[oi->state]); | |
2225 | return 0; | |
2226 | } | |
2227 | ||
2228 | /* if we have nothing to send, return */ | |
2229 | if (oi->lsupdate_list->count == 0) | |
2230 | return 0; | |
2231 | ||
2232 | memset(sendbuf, 0, iobuflen); | |
2233 | oh = (struct ospf6_header *)sendbuf; | |
2234 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
2235 | + sizeof(struct ospf6_header)); | |
2236 | ||
d7c0a89a | 2237 | p = (uint8_t *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
d62a17ae | 2238 | lsa_cnt = 0; |
2239 | ||
2240 | for (ALL_LSDB(oi->lsupdate_list, lsa)) { | |
2241 | /* MTU check */ | |
2242 | if ((p - sendbuf + ((unsigned int)OSPF6_LSA_SIZE(lsa->header))) | |
2243 | > ospf6_packet_max(oi)) { | |
1ba43456 CS |
2244 | if (lsa_cnt) { |
2245 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2246 | oh->length = htons(p - sendbuf); | |
2247 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2248 | ||
2249 | ospf6_send_lsupdate(NULL, oi, oh); | |
43855e3d | 2250 | if (IS_OSPF6_DEBUG_MESSAGE( |
996c9314 | 2251 | OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) |
43855e3d CS |
2252 | zlog_debug("%s: LSUpdate length %d", |
2253 | __PRETTY_FUNCTION__, | |
2254 | ntohs(oh->length)); | |
1ba43456 CS |
2255 | |
2256 | memset(sendbuf, 0, iobuflen); | |
2257 | oh = (struct ospf6_header *)sendbuf; | |
996c9314 LB |
2258 | lsupdate = (struct ospf6_lsupdate |
2259 | *)((caddr_t)oh | |
2260 | + sizeof(struct | |
2261 | ospf6_header)); | |
1ba43456 | 2262 | |
d7c0a89a QY |
2263 | p = (uint8_t *)((caddr_t)lsupdate |
2264 | + sizeof(struct | |
2265 | ospf6_lsupdate)); | |
1ba43456 CS |
2266 | lsa_cnt = 0; |
2267 | } | |
d62a17ae | 2268 | } |
2269 | ||
2270 | ospf6_lsa_age_update_to_send(lsa, oi->transdelay); | |
2271 | memcpy(p, lsa->header, OSPF6_LSA_SIZE(lsa->header)); | |
2272 | p += OSPF6_LSA_SIZE(lsa->header); | |
2273 | lsa_cnt++; | |
2274 | ||
2275 | assert(lsa->lock == 2); | |
2276 | ospf6_lsdb_remove(lsa, oi->lsupdate_list); | |
2277 | } | |
2278 | ||
2279 | if (lsa_cnt) { | |
d62a17ae | 2280 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; |
2281 | oh->length = htons(p - sendbuf); | |
1ba43456 | 2282 | lsupdate->lsa_number = htonl(lsa_cnt); |
d62a17ae | 2283 | |
1ba43456 | 2284 | ospf6_send_lsupdate(NULL, oi, oh); |
d62a17ae | 2285 | } |
2286 | ||
2287 | if (oi->lsupdate_list->count > 0) { | |
2288 | oi->thread_send_lsupdate = NULL; | |
2289 | thread_add_event(master, ospf6_lsupdate_send_interface, oi, 0, | |
2290 | &oi->thread_send_lsupdate); | |
2291 | } | |
2292 | ||
2293 | return 0; | |
718e3744 | 2294 | } |
2295 | ||
d62a17ae | 2296 | int ospf6_lsack_send_neighbor(struct thread *thread) |
718e3744 | 2297 | { |
d62a17ae | 2298 | struct ospf6_neighbor *on; |
2299 | struct ospf6_header *oh; | |
d7c0a89a | 2300 | uint8_t *p; |
d62a17ae | 2301 | struct ospf6_lsa *lsa; |
2302 | int lsa_cnt = 0; | |
2303 | ||
2304 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
2305 | on->thread_send_lsack = (struct thread *)NULL; | |
2306 | ||
2307 | if (on->state < OSPF6_NEIGHBOR_EXCHANGE) { | |
2308 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND)) | |
2309 | zlog_debug("Quit to send LSAck to neighbor %s state %s", | |
2310 | on->name, | |
2311 | ospf6_neighbor_state_str[on->state]); | |
2312 | return 0; | |
2313 | } | |
2314 | ||
2315 | /* if we have nothing to send, return */ | |
2316 | if (on->lsack_list->count == 0) | |
2317 | return 0; | |
2318 | ||
2319 | memset(sendbuf, 0, iobuflen); | |
2320 | oh = (struct ospf6_header *)sendbuf; | |
2321 | ||
d7c0a89a | 2322 | p = (uint8_t *)((caddr_t)oh + sizeof(struct ospf6_header)); |
d62a17ae | 2323 | |
2324 | for (ALL_LSDB(on->lsack_list, lsa)) { | |
2325 | /* MTU check */ | |
2326 | if (p - sendbuf + sizeof(struct ospf6_lsa_header) | |
2327 | > ospf6_packet_max(on->ospf6_if)) { | |
2328 | /* if we run out of packet size/space here, | |
2329 | better to try again soon. */ | |
1ba43456 CS |
2330 | if (lsa_cnt) { |
2331 | oh->type = OSPF6_MESSAGE_TYPE_LSACK; | |
2332 | oh->length = htons(p - sendbuf); | |
2333 | ||
43855e3d CS |
2334 | on->ospf6_if->ls_ack_out++; |
2335 | ||
1ba43456 | 2336 | ospf6_send(on->ospf6_if->linklocal_addr, |
996c9314 LB |
2337 | &on->linklocal_addr, on->ospf6_if, |
2338 | oh); | |
1ba43456 CS |
2339 | |
2340 | memset(sendbuf, 0, iobuflen); | |
2341 | oh = (struct ospf6_header *)sendbuf; | |
d7c0a89a QY |
2342 | p = (uint8_t *)((caddr_t)oh |
2343 | + sizeof(struct ospf6_header)); | |
1ba43456 CS |
2344 | lsa_cnt = 0; |
2345 | } | |
d62a17ae | 2346 | } |
2347 | ||
2348 | ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay); | |
2349 | memcpy(p, lsa->header, sizeof(struct ospf6_lsa_header)); | |
2350 | p += sizeof(struct ospf6_lsa_header); | |
2351 | ||
2352 | assert(lsa->lock == 2); | |
2353 | ospf6_lsdb_remove(lsa, on->lsack_list); | |
2354 | lsa_cnt++; | |
2355 | } | |
2356 | ||
2357 | if (lsa_cnt) { | |
2358 | oh->type = OSPF6_MESSAGE_TYPE_LSACK; | |
2359 | oh->length = htons(p - sendbuf); | |
2360 | ||
43855e3d CS |
2361 | on->ospf6_if->ls_ack_out++; |
2362 | ||
d62a17ae | 2363 | ospf6_send(on->ospf6_if->linklocal_addr, &on->linklocal_addr, |
2364 | on->ospf6_if, oh); | |
2365 | } | |
2366 | ||
2367 | if (on->lsack_list->count > 0) | |
2368 | thread_add_event(master, ospf6_lsack_send_neighbor, on, 0, | |
2369 | &on->thread_send_lsack); | |
2370 | ||
2371 | return 0; | |
718e3744 | 2372 | } |
2373 | ||
d62a17ae | 2374 | int ospf6_lsack_send_interface(struct thread *thread) |
718e3744 | 2375 | { |
d62a17ae | 2376 | struct ospf6_interface *oi; |
2377 | struct ospf6_header *oh; | |
d7c0a89a | 2378 | uint8_t *p; |
d62a17ae | 2379 | struct ospf6_lsa *lsa; |
2380 | int lsa_cnt = 0; | |
2381 | ||
2382 | oi = (struct ospf6_interface *)THREAD_ARG(thread); | |
2383 | oi->thread_send_lsack = (struct thread *)NULL; | |
2384 | ||
2385 | if (oi->state <= OSPF6_INTERFACE_WAITING) { | |
2386 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND)) | |
2387 | zlog_debug( | |
2388 | "Quit to send LSAck to interface %s state %s", | |
2389 | oi->interface->name, | |
2390 | ospf6_interface_state_str[oi->state]); | |
2391 | return 0; | |
2392 | } | |
2393 | ||
2394 | /* if we have nothing to send, return */ | |
2395 | if (oi->lsack_list->count == 0) | |
2396 | return 0; | |
2397 | ||
2398 | memset(sendbuf, 0, iobuflen); | |
2399 | oh = (struct ospf6_header *)sendbuf; | |
2400 | ||
d7c0a89a | 2401 | p = (uint8_t *)((caddr_t)oh + sizeof(struct ospf6_header)); |
d62a17ae | 2402 | |
2403 | for (ALL_LSDB(oi->lsack_list, lsa)) { | |
2404 | /* MTU check */ | |
2405 | if (p - sendbuf + sizeof(struct ospf6_lsa_header) | |
2406 | > ospf6_packet_max(oi)) { | |
2407 | /* if we run out of packet size/space here, | |
2408 | better to try again soon. */ | |
2409 | THREAD_OFF(oi->thread_send_lsack); | |
2410 | thread_add_event(master, ospf6_lsack_send_interface, oi, | |
2411 | 0, &oi->thread_send_lsack); | |
2412 | ||
2413 | ospf6_lsdb_lsa_unlock(lsa); | |
2414 | break; | |
2415 | } | |
2416 | ||
2417 | ospf6_lsa_age_update_to_send(lsa, oi->transdelay); | |
2418 | memcpy(p, lsa->header, sizeof(struct ospf6_lsa_header)); | |
2419 | p += sizeof(struct ospf6_lsa_header); | |
2420 | ||
2421 | assert(lsa->lock == 2); | |
2422 | ospf6_lsdb_remove(lsa, oi->lsack_list); | |
2423 | lsa_cnt++; | |
2424 | } | |
2425 | ||
2426 | if (lsa_cnt) { | |
2427 | oh->type = OSPF6_MESSAGE_TYPE_LSACK; | |
2428 | oh->length = htons(p - sendbuf); | |
2429 | ||
2430 | if ((oi->state == OSPF6_INTERFACE_POINTTOPOINT) | |
2431 | || (oi->state == OSPF6_INTERFACE_DR) | |
2432 | || (oi->state == OSPF6_INTERFACE_BDR)) | |
2433 | ospf6_send(oi->linklocal_addr, &allspfrouters6, oi, oh); | |
2434 | else | |
2435 | ospf6_send(oi->linklocal_addr, &alldrouters6, oi, oh); | |
2436 | } | |
2437 | ||
2438 | if (oi->lsack_list->count > 0) | |
2439 | thread_add_event(master, ospf6_lsack_send_interface, oi, 0, | |
2440 | &oi->thread_send_lsack); | |
2441 | ||
2442 | return 0; | |
718e3744 | 2443 | } |
2444 | ||
6b0655a2 | 2445 | |
508e53e2 | 2446 | /* Commands */ |
2447 | DEFUN (debug_ospf6_message, | |
2448 | debug_ospf6_message_cmd, | |
1d68dbfe | 2449 | "debug ospf6 message <unknown|hello|dbdesc|lsreq|lsupdate|lsack|all> [<send|recv>]", |
508e53e2 | 2450 | DEBUG_STR |
2451 | OSPF6_STR | |
2452 | "Debug OSPFv3 message\n" | |
2453 | "Debug Unknown message\n" | |
2454 | "Debug Hello message\n" | |
2455 | "Debug Database Description message\n" | |
2456 | "Debug Link State Request message\n" | |
2457 | "Debug Link State Update message\n" | |
2458 | "Debug Link State Acknowledgement message\n" | |
2459 | "Debug All message\n" | |
1d68dbfe DW |
2460 | "Debug only sending message\n" |
2461 | "Debug only receiving message\n") | |
718e3744 | 2462 | { |
d62a17ae | 2463 | int idx_packet = 3; |
2464 | int idx_send_recv = 4; | |
2465 | unsigned char level = 0; | |
2466 | int type = 0; | |
2467 | int i; | |
2468 | ||
2469 | /* check type */ | |
2470 | if (!strncmp(argv[idx_packet]->arg, "u", 1)) | |
2471 | type = OSPF6_MESSAGE_TYPE_UNKNOWN; | |
2472 | else if (!strncmp(argv[idx_packet]->arg, "h", 1)) | |
2473 | type = OSPF6_MESSAGE_TYPE_HELLO; | |
2474 | else if (!strncmp(argv[idx_packet]->arg, "d", 1)) | |
2475 | type = OSPF6_MESSAGE_TYPE_DBDESC; | |
2476 | else if (!strncmp(argv[idx_packet]->arg, "lsr", 3)) | |
2477 | type = OSPF6_MESSAGE_TYPE_LSREQ; | |
2478 | else if (!strncmp(argv[idx_packet]->arg, "lsu", 3)) | |
2479 | type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2480 | else if (!strncmp(argv[idx_packet]->arg, "lsa", 3)) | |
2481 | type = OSPF6_MESSAGE_TYPE_LSACK; | |
2482 | else if (!strncmp(argv[idx_packet]->arg, "a", 1)) | |
2483 | type = OSPF6_MESSAGE_TYPE_ALL; | |
2484 | ||
2485 | if (argc == 4) | |
2486 | level = OSPF6_DEBUG_MESSAGE_SEND | OSPF6_DEBUG_MESSAGE_RECV; | |
2487 | else if (!strncmp(argv[idx_send_recv]->arg, "s", 1)) | |
2488 | level = OSPF6_DEBUG_MESSAGE_SEND; | |
2489 | else if (!strncmp(argv[idx_send_recv]->arg, "r", 1)) | |
2490 | level = OSPF6_DEBUG_MESSAGE_RECV; | |
2491 | ||
2492 | if (type == OSPF6_MESSAGE_TYPE_ALL) { | |
2493 | for (i = 0; i < 6; i++) | |
2494 | OSPF6_DEBUG_MESSAGE_ON(i, level); | |
2495 | } else | |
2496 | OSPF6_DEBUG_MESSAGE_ON(type, level); | |
2497 | ||
2498 | return CMD_SUCCESS; | |
718e3744 | 2499 | } |
2500 | ||
508e53e2 | 2501 | DEFUN (no_debug_ospf6_message, |
2502 | no_debug_ospf6_message_cmd, | |
1d68dbfe | 2503 | "no debug ospf6 message <unknown|hello|dbdesc|lsreq|lsupdate|lsack|all> [<send|recv>]", |
508e53e2 | 2504 | NO_STR |
2505 | DEBUG_STR | |
2506 | OSPF6_STR | |
2507 | "Debug OSPFv3 message\n" | |
2508 | "Debug Unknown message\n" | |
2509 | "Debug Hello message\n" | |
2510 | "Debug Database Description message\n" | |
2511 | "Debug Link State Request message\n" | |
2512 | "Debug Link State Update message\n" | |
2513 | "Debug Link State Acknowledgement message\n" | |
2514 | "Debug All message\n" | |
1d68dbfe DW |
2515 | "Debug only sending message\n" |
2516 | "Debug only receiving message\n") | |
508e53e2 | 2517 | { |
d62a17ae | 2518 | int idx_packet = 4; |
2519 | int idx_send_recv = 5; | |
2520 | unsigned char level = 0; | |
2521 | int type = 0; | |
2522 | int i; | |
2523 | ||
2524 | /* check type */ | |
2525 | if (!strncmp(argv[idx_packet]->arg, "u", 1)) | |
2526 | type = OSPF6_MESSAGE_TYPE_UNKNOWN; | |
2527 | else if (!strncmp(argv[idx_packet]->arg, "h", 1)) | |
2528 | type = OSPF6_MESSAGE_TYPE_HELLO; | |
2529 | else if (!strncmp(argv[idx_packet]->arg, "d", 1)) | |
2530 | type = OSPF6_MESSAGE_TYPE_DBDESC; | |
2531 | else if (!strncmp(argv[idx_packet]->arg, "lsr", 3)) | |
2532 | type = OSPF6_MESSAGE_TYPE_LSREQ; | |
2533 | else if (!strncmp(argv[idx_packet]->arg, "lsu", 3)) | |
2534 | type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2535 | else if (!strncmp(argv[idx_packet]->arg, "lsa", 3)) | |
2536 | type = OSPF6_MESSAGE_TYPE_LSACK; | |
2537 | else if (!strncmp(argv[idx_packet]->arg, "a", 1)) | |
2538 | type = OSPF6_MESSAGE_TYPE_ALL; | |
2539 | ||
2540 | if (argc == 5) | |
2541 | level = OSPF6_DEBUG_MESSAGE_SEND | OSPF6_DEBUG_MESSAGE_RECV; | |
2542 | else if (!strncmp(argv[idx_send_recv]->arg, "s", 1)) | |
2543 | level = OSPF6_DEBUG_MESSAGE_SEND; | |
2544 | else if (!strncmp(argv[idx_send_recv]->arg, "r", 1)) | |
2545 | level = OSPF6_DEBUG_MESSAGE_RECV; | |
2546 | ||
2547 | if (type == OSPF6_MESSAGE_TYPE_ALL) { | |
2548 | for (i = 0; i < 6; i++) | |
2549 | OSPF6_DEBUG_MESSAGE_OFF(i, level); | |
2550 | } else | |
2551 | OSPF6_DEBUG_MESSAGE_OFF(type, level); | |
2552 | ||
2553 | return CMD_SUCCESS; | |
718e3744 | 2554 | } |
2555 | ||
508e53e2 | 2556 | |
d62a17ae | 2557 | int config_write_ospf6_debug_message(struct vty *vty) |
718e3744 | 2558 | { |
d62a17ae | 2559 | const char *type_str[] = {"unknown", "hello", "dbdesc", |
2560 | "lsreq", "lsupdate", "lsack"}; | |
2561 | unsigned char s = 0, r = 0; | |
2562 | int i; | |
2563 | ||
2564 | for (i = 0; i < 6; i++) { | |
2565 | if (IS_OSPF6_DEBUG_MESSAGE(i, SEND)) | |
2566 | s |= 1 << i; | |
2567 | if (IS_OSPF6_DEBUG_MESSAGE(i, RECV)) | |
2568 | r |= 1 << i; | |
2569 | } | |
2570 | ||
2571 | if (s == 0x3f && r == 0x3f) { | |
2572 | vty_out(vty, "debug ospf6 message all\n"); | |
2573 | return 0; | |
2574 | } | |
2575 | ||
2576 | if (s == 0x3f && r == 0) { | |
2577 | vty_out(vty, "debug ospf6 message all send\n"); | |
2578 | return 0; | |
2579 | } else if (s == 0 && r == 0x3f) { | |
2580 | vty_out(vty, "debug ospf6 message all recv\n"); | |
2581 | return 0; | |
2582 | } | |
2583 | ||
2584 | /* Unknown message is logged by default */ | |
2585 | if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, SEND) | |
2586 | && !IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
2587 | vty_out(vty, "no debug ospf6 message unknown\n"); | |
2588 | else if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, SEND)) | |
2589 | vty_out(vty, "no debug ospf6 message unknown send\n"); | |
2590 | else if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
2591 | vty_out(vty, "no debug ospf6 message unknown recv\n"); | |
2592 | ||
2593 | for (i = 1; i < 6; i++) { | |
2594 | if (IS_OSPF6_DEBUG_MESSAGE(i, SEND) | |
2595 | && IS_OSPF6_DEBUG_MESSAGE(i, RECV)) | |
2596 | vty_out(vty, "debug ospf6 message %s\n", type_str[i]); | |
2597 | else if (IS_OSPF6_DEBUG_MESSAGE(i, SEND)) | |
2598 | vty_out(vty, "debug ospf6 message %s send\n", | |
2599 | type_str[i]); | |
2600 | else if (IS_OSPF6_DEBUG_MESSAGE(i, RECV)) | |
2601 | vty_out(vty, "debug ospf6 message %s recv\n", | |
2602 | type_str[i]); | |
2603 | } | |
2604 | ||
2605 | return 0; | |
718e3744 | 2606 | } |
2607 | ||
d62a17ae | 2608 | void install_element_ospf6_debug_message(void) |
508e53e2 | 2609 | { |
d62a17ae | 2610 | install_element(ENABLE_NODE, &debug_ospf6_message_cmd); |
2611 | install_element(ENABLE_NODE, &no_debug_ospf6_message_cmd); | |
2612 | install_element(CONFIG_NODE, &debug_ospf6_message_cmd); | |
2613 | install_element(CONFIG_NODE, &no_debug_ospf6_message_cmd); | |
508e53e2 | 2614 | } |