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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" | |
4ba03be5 | 29 | #include "lib_errors.h" |
508e53e2 | 30 | |
508e53e2 | 31 | #include "ospf6_proto.h" |
32 | #include "ospf6_lsa.h" | |
33 | #include "ospf6_lsdb.h" | |
34 | #include "ospf6_network.h" | |
35 | #include "ospf6_message.h" | |
718e3744 | 36 | |
508e53e2 | 37 | #include "ospf6_top.h" |
38 | #include "ospf6_area.h" | |
39 | #include "ospf6_neighbor.h" | |
40 | #include "ospf6_interface.h" | |
718e3744 | 41 | |
abc7ef44 DO |
42 | /* for structures and macros ospf6_lsa_examin() needs */ |
43 | #include "ospf6_abr.h" | |
44 | #include "ospf6_asbr.h" | |
45 | #include "ospf6_intra.h" | |
46 | ||
508e53e2 | 47 | #include "ospf6_flood.h" |
049207c3 | 48 | #include "ospf6d.h" |
718e3744 | 49 | |
681b84e8 DT |
50 | #include <netinet/ip6.h> |
51 | ||
508e53e2 | 52 | unsigned char conf_debug_ospf6_message[6] = {0x03, 0, 0, 0, 0, 0}; |
d62a17ae | 53 | static const struct message ospf6_message_type_str[] = { |
54 | {OSPF6_MESSAGE_TYPE_HELLO, "Hello"}, | |
55 | {OSPF6_MESSAGE_TYPE_DBDESC, "DbDesc"}, | |
56 | {OSPF6_MESSAGE_TYPE_LSREQ, "LSReq"}, | |
57 | {OSPF6_MESSAGE_TYPE_LSUPDATE, "LSUpdate"}, | |
58 | {OSPF6_MESSAGE_TYPE_LSACK, "LSAck"}, | |
59 | {0}}; | |
718e3744 | 60 | |
abc7ef44 DO |
61 | /* Minimum (besides the standard OSPF packet header) lengths for OSPF |
62 | packets of particular types, offset is the "type" field. */ | |
d7c0a89a | 63 | const uint16_t ospf6_packet_minlen[OSPF6_MESSAGE_TYPE_ALL] = { |
d62a17ae | 64 | 0, |
65 | OSPF6_HELLO_MIN_SIZE, | |
66 | OSPF6_DB_DESC_MIN_SIZE, | |
67 | OSPF6_LS_REQ_MIN_SIZE, | |
68 | OSPF6_LS_UPD_MIN_SIZE, | |
69 | OSPF6_LS_ACK_MIN_SIZE}; | |
abc7ef44 DO |
70 | |
71 | /* Minimum (besides the standard LSA header) lengths for LSAs of particular | |
72 | types, offset is the "LSA function code" portion of "LSA type" field. */ | |
d7c0a89a | 73 | const uint16_t ospf6_lsa_minlen[OSPF6_LSTYPE_SIZE] = { |
d62a17ae | 74 | 0, |
75 | /* 0x2001 */ OSPF6_ROUTER_LSA_MIN_SIZE, | |
76 | /* 0x2002 */ OSPF6_NETWORK_LSA_MIN_SIZE, | |
77 | /* 0x2003 */ OSPF6_INTER_PREFIX_LSA_MIN_SIZE, | |
78 | /* 0x2004 */ OSPF6_INTER_ROUTER_LSA_FIX_SIZE, | |
79 | /* 0x4005 */ OSPF6_AS_EXTERNAL_LSA_MIN_SIZE, | |
80 | /* 0x2006 */ 0, | |
81 | /* 0x2007 */ OSPF6_AS_EXTERNAL_LSA_MIN_SIZE, | |
82 | /* 0x0008 */ OSPF6_LINK_LSA_MIN_SIZE, | |
83 | /* 0x2009 */ OSPF6_INTRA_PREFIX_LSA_MIN_SIZE}; | |
abc7ef44 | 84 | |
508e53e2 | 85 | /* print functions */ |
718e3744 | 86 | |
d62a17ae | 87 | static void ospf6_header_print(struct ospf6_header *oh) |
718e3744 | 88 | { |
d62a17ae | 89 | char router_id[16], area_id[16]; |
90 | inet_ntop(AF_INET, &oh->router_id, router_id, sizeof(router_id)); | |
91 | inet_ntop(AF_INET, &oh->area_id, area_id, sizeof(area_id)); | |
92 | ||
93 | zlog_debug(" OSPFv%d Type:%d Len:%hu Router-ID:%s", oh->version, | |
94 | oh->type, ntohs(oh->length), router_id); | |
95 | zlog_debug(" Area-ID:%s Cksum:%hx Instance-ID:%d", area_id, | |
96 | ntohs(oh->checksum), oh->instance_id); | |
718e3744 | 97 | } |
98 | ||
d62a17ae | 99 | void ospf6_hello_print(struct ospf6_header *oh) |
718e3744 | 100 | { |
d62a17ae | 101 | struct ospf6_hello *hello; |
102 | char options[16]; | |
103 | char drouter[16], bdrouter[16], neighbor[16]; | |
104 | char *p; | |
105 | ||
106 | ospf6_header_print(oh); | |
107 | assert(oh->type == OSPF6_MESSAGE_TYPE_HELLO); | |
108 | ||
109 | hello = (struct ospf6_hello *)((caddr_t)oh | |
110 | + sizeof(struct ospf6_header)); | |
111 | ||
112 | inet_ntop(AF_INET, &hello->drouter, drouter, sizeof(drouter)); | |
113 | inet_ntop(AF_INET, &hello->bdrouter, bdrouter, sizeof(bdrouter)); | |
114 | ospf6_options_printbuf(hello->options, options, sizeof(options)); | |
115 | ||
116 | zlog_debug(" I/F-Id:%ld Priority:%d Option:%s", | |
d7c0a89a | 117 | (unsigned long)ntohl(hello->interface_id), hello->priority, |
d62a17ae | 118 | options); |
119 | zlog_debug(" HelloInterval:%hu DeadInterval:%hu", | |
120 | ntohs(hello->hello_interval), ntohs(hello->dead_interval)); | |
121 | zlog_debug(" DR:%s BDR:%s", drouter, bdrouter); | |
122 | ||
123 | for (p = (char *)((caddr_t)hello + sizeof(struct ospf6_hello)); | |
d7c0a89a QY |
124 | p + sizeof(uint32_t) <= OSPF6_MESSAGE_END(oh); |
125 | p += sizeof(uint32_t)) { | |
d62a17ae | 126 | inet_ntop(AF_INET, (void *)p, neighbor, sizeof(neighbor)); |
127 | zlog_debug(" Neighbor: %s", neighbor); | |
128 | } | |
129 | ||
130 | assert(p == OSPF6_MESSAGE_END(oh)); | |
718e3744 | 131 | } |
132 | ||
d62a17ae | 133 | void ospf6_dbdesc_print(struct ospf6_header *oh) |
718e3744 | 134 | { |
d62a17ae | 135 | struct ospf6_dbdesc *dbdesc; |
136 | char options[16]; | |
137 | char *p; | |
508e53e2 | 138 | |
d62a17ae | 139 | ospf6_header_print(oh); |
140 | assert(oh->type == OSPF6_MESSAGE_TYPE_DBDESC); | |
508e53e2 | 141 | |
d62a17ae | 142 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh |
143 | + sizeof(struct ospf6_header)); | |
508e53e2 | 144 | |
d62a17ae | 145 | ospf6_options_printbuf(dbdesc->options, options, sizeof(options)); |
508e53e2 | 146 | |
d62a17ae | 147 | zlog_debug(" MBZ: %#x Option: %s IfMTU: %hu", dbdesc->reserved1, |
148 | options, ntohs(dbdesc->ifmtu)); | |
149 | zlog_debug(" MBZ: %#x Bits: %s%s%s SeqNum: %#lx", dbdesc->reserved2, | |
150 | (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT) ? "I" : "-"), | |
151 | (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MBIT) ? "M" : "-"), | |
152 | (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT) ? "m" : "s"), | |
d7c0a89a | 153 | (unsigned long)ntohl(dbdesc->seqnum)); |
508e53e2 | 154 | |
d62a17ae | 155 | for (p = (char *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc)); |
156 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
157 | p += sizeof(struct ospf6_lsa_header)) | |
158 | ospf6_lsa_header_print_raw((struct ospf6_lsa_header *)p); | |
508e53e2 | 159 | |
d62a17ae | 160 | assert(p == OSPF6_MESSAGE_END(oh)); |
718e3744 | 161 | } |
162 | ||
d62a17ae | 163 | void ospf6_lsreq_print(struct ospf6_header *oh) |
718e3744 | 164 | { |
d62a17ae | 165 | char id[16], adv_router[16]; |
166 | char *p; | |
167 | ||
168 | ospf6_header_print(oh); | |
169 | assert(oh->type == OSPF6_MESSAGE_TYPE_LSREQ); | |
170 | ||
171 | for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header)); | |
172 | p + sizeof(struct ospf6_lsreq_entry) <= OSPF6_MESSAGE_END(oh); | |
173 | p += sizeof(struct ospf6_lsreq_entry)) { | |
174 | struct ospf6_lsreq_entry *e = (struct ospf6_lsreq_entry *)p; | |
175 | inet_ntop(AF_INET, &e->adv_router, adv_router, | |
176 | sizeof(adv_router)); | |
177 | inet_ntop(AF_INET, &e->id, id, sizeof(id)); | |
178 | zlog_debug(" [%s Id:%s Adv:%s]", ospf6_lstype_name(e->type), | |
179 | id, adv_router); | |
180 | } | |
181 | ||
182 | assert(p == OSPF6_MESSAGE_END(oh)); | |
718e3744 | 183 | } |
184 | ||
d62a17ae | 185 | void ospf6_lsupdate_print(struct ospf6_header *oh) |
718e3744 | 186 | { |
d62a17ae | 187 | struct ospf6_lsupdate *lsupdate; |
d7c0a89a | 188 | unsigned long num; |
d62a17ae | 189 | char *p; |
718e3744 | 190 | |
d62a17ae | 191 | ospf6_header_print(oh); |
192 | assert(oh->type == OSPF6_MESSAGE_TYPE_LSUPDATE); | |
718e3744 | 193 | |
d62a17ae | 194 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh |
195 | + sizeof(struct ospf6_header)); | |
718e3744 | 196 | |
d62a17ae | 197 | num = ntohl(lsupdate->lsa_number); |
198 | zlog_debug(" Number of LSA: %ld", num); | |
718e3744 | 199 | |
d62a17ae | 200 | for (p = (char *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
201 | p < OSPF6_MESSAGE_END(oh) | |
202 | && p + OSPF6_LSA_SIZE(p) <= OSPF6_MESSAGE_END(oh); | |
203 | p += OSPF6_LSA_SIZE(p)) { | |
204 | ospf6_lsa_header_print_raw((struct ospf6_lsa_header *)p); | |
205 | } | |
718e3744 | 206 | |
d62a17ae | 207 | assert(p == OSPF6_MESSAGE_END(oh)); |
718e3744 | 208 | } |
209 | ||
d62a17ae | 210 | void ospf6_lsack_print(struct ospf6_header *oh) |
718e3744 | 211 | { |
d62a17ae | 212 | char *p; |
718e3744 | 213 | |
d62a17ae | 214 | ospf6_header_print(oh); |
215 | assert(oh->type == OSPF6_MESSAGE_TYPE_LSACK); | |
718e3744 | 216 | |
d62a17ae | 217 | for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header)); |
218 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
219 | p += sizeof(struct ospf6_lsa_header)) | |
220 | ospf6_lsa_header_print_raw((struct ospf6_lsa_header *)p); | |
508e53e2 | 221 | |
d62a17ae | 222 | assert(p == OSPF6_MESSAGE_END(oh)); |
718e3744 | 223 | } |
224 | ||
d62a17ae | 225 | static void ospf6_hello_recv(struct in6_addr *src, struct in6_addr *dst, |
226 | struct ospf6_interface *oi, | |
227 | struct ospf6_header *oh) | |
718e3744 | 228 | { |
d62a17ae | 229 | struct ospf6_hello *hello; |
230 | struct ospf6_neighbor *on; | |
231 | char *p; | |
232 | int twoway = 0; | |
233 | int neighborchange = 0; | |
234 | int neighbor_ifindex_change = 0; | |
235 | int backupseen = 0; | |
236 | ||
237 | hello = (struct ospf6_hello *)((caddr_t)oh | |
238 | + sizeof(struct ospf6_header)); | |
239 | ||
240 | /* HelloInterval check */ | |
241 | if (ntohs(hello->hello_interval) != oi->hello_interval) { | |
242 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
243 | zlog_debug("HelloInterval mismatch"); | |
244 | return; | |
245 | } | |
246 | ||
247 | /* RouterDeadInterval check */ | |
248 | if (ntohs(hello->dead_interval) != oi->dead_interval) { | |
249 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
250 | zlog_debug("RouterDeadInterval mismatch"); | |
251 | return; | |
252 | } | |
253 | ||
254 | /* E-bit check */ | |
255 | if (OSPF6_OPT_ISSET(hello->options, OSPF6_OPT_E) | |
256 | != OSPF6_OPT_ISSET(oi->area->options, OSPF6_OPT_E)) { | |
257 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
258 | zlog_debug("E-bit mismatch"); | |
259 | return; | |
260 | } | |
261 | ||
262 | /* Find neighbor, create if not exist */ | |
263 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
264 | if (on == NULL) { | |
265 | on = ospf6_neighbor_create(oh->router_id, oi); | |
266 | on->prev_drouter = on->drouter = hello->drouter; | |
267 | on->prev_bdrouter = on->bdrouter = hello->bdrouter; | |
268 | on->priority = hello->priority; | |
269 | } | |
270 | ||
271 | /* Always override neighbor's source address */ | |
272 | memcpy(&on->linklocal_addr, src, sizeof(struct in6_addr)); | |
273 | ||
274 | /* Neighbor ifindex check */ | |
275 | if (on->ifindex != (ifindex_t)ntohl(hello->interface_id)) { | |
276 | on->ifindex = ntohl(hello->interface_id); | |
277 | neighbor_ifindex_change++; | |
278 | } | |
279 | ||
280 | /* TwoWay check */ | |
281 | for (p = (char *)((caddr_t)hello + sizeof(struct ospf6_hello)); | |
d7c0a89a QY |
282 | p + sizeof(uint32_t) <= OSPF6_MESSAGE_END(oh); |
283 | p += sizeof(uint32_t)) { | |
284 | uint32_t *router_id = (uint32_t *)p; | |
d62a17ae | 285 | |
286 | if (*router_id == oi->area->ospf6->router_id) | |
287 | twoway++; | |
288 | } | |
289 | ||
290 | assert(p == OSPF6_MESSAGE_END(oh)); | |
291 | ||
292 | /* RouterPriority check */ | |
293 | if (on->priority != hello->priority) { | |
294 | on->priority = hello->priority; | |
295 | neighborchange++; | |
296 | } | |
297 | ||
298 | /* DR check */ | |
299 | if (on->drouter != hello->drouter) { | |
300 | on->prev_drouter = on->drouter; | |
301 | on->drouter = hello->drouter; | |
302 | if (on->prev_drouter == on->router_id | |
303 | || on->drouter == on->router_id) | |
304 | neighborchange++; | |
305 | } | |
306 | ||
307 | /* BDR check */ | |
308 | if (on->bdrouter != hello->bdrouter) { | |
309 | on->prev_bdrouter = on->bdrouter; | |
310 | on->bdrouter = hello->bdrouter; | |
311 | if (on->prev_bdrouter == on->router_id | |
312 | || on->bdrouter == on->router_id) | |
313 | neighborchange++; | |
314 | } | |
315 | ||
316 | /* BackupSeen check */ | |
317 | if (oi->state == OSPF6_INTERFACE_WAITING) { | |
318 | if (hello->bdrouter == on->router_id) | |
319 | backupseen++; | |
320 | else if (hello->drouter == on->router_id | |
321 | && hello->bdrouter == htonl(0)) | |
322 | backupseen++; | |
323 | } | |
324 | ||
43855e3d CS |
325 | oi->hello_in++; |
326 | ||
d62a17ae | 327 | /* Execute neighbor events */ |
328 | thread_execute(master, hello_received, on, 0); | |
329 | if (twoway) | |
330 | thread_execute(master, twoway_received, on, 0); | |
331 | else | |
332 | thread_execute(master, oneway_received, on, 0); | |
333 | ||
334 | /* Schedule interface events */ | |
335 | if (backupseen) | |
336 | thread_add_event(master, backup_seen, oi, 0, NULL); | |
337 | if (neighborchange) | |
338 | thread_add_event(master, neighbor_change, oi, 0, NULL); | |
339 | ||
340 | if (neighbor_ifindex_change && on->state == OSPF6_NEIGHBOR_FULL) | |
341 | OSPF6_ROUTER_LSA_SCHEDULE(oi->area); | |
718e3744 | 342 | } |
343 | ||
d62a17ae | 344 | static void ospf6_dbdesc_recv_master(struct ospf6_header *oh, |
345 | struct ospf6_neighbor *on) | |
718e3744 | 346 | { |
d62a17ae | 347 | struct ospf6_dbdesc *dbdesc; |
348 | char *p; | |
349 | ||
350 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh | |
351 | + sizeof(struct ospf6_header)); | |
352 | ||
353 | if (on->state < OSPF6_NEIGHBOR_INIT) { | |
354 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
355 | zlog_debug("Neighbor state less than Init, ignore"); | |
356 | return; | |
357 | } | |
358 | ||
359 | switch (on->state) { | |
360 | case OSPF6_NEIGHBOR_TWOWAY: | |
361 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
362 | zlog_debug("Neighbor state is 2-Way, ignore"); | |
363 | return; | |
364 | ||
365 | case OSPF6_NEIGHBOR_INIT: | |
366 | thread_execute(master, twoway_received, on, 0); | |
367 | if (on->state != OSPF6_NEIGHBOR_EXSTART) { | |
368 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
369 | zlog_debug( | |
370 | "Neighbor state is not ExStart, ignore"); | |
371 | return; | |
372 | } | |
373 | /* else fall through to ExStart */ | |
374 | /* fallthru */ | |
375 | case OSPF6_NEIGHBOR_EXSTART: | |
376 | /* if neighbor obeys us as our slave, schedule negotiation_done | |
377 | and process LSA Headers. Otherwise, ignore this message */ | |
378 | if (!CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT) | |
379 | && !CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT) | |
380 | && ntohl(dbdesc->seqnum) == on->dbdesc_seqnum) { | |
381 | /* execute NegotiationDone */ | |
382 | thread_execute(master, negotiation_done, on, 0); | |
383 | ||
384 | /* Record neighbor options */ | |
385 | memcpy(on->options, dbdesc->options, | |
386 | sizeof(on->options)); | |
387 | } else { | |
388 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
389 | zlog_debug("Negotiation failed"); | |
390 | return; | |
391 | } | |
392 | /* fall through to exchange */ | |
393 | ||
394 | case OSPF6_NEIGHBOR_EXCHANGE: | |
395 | if (!memcmp(dbdesc, &on->dbdesc_last, | |
396 | sizeof(struct ospf6_dbdesc))) { | |
397 | /* Duplicated DatabaseDescription is dropped by master | |
398 | */ | |
399 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
400 | zlog_debug( | |
401 | "Duplicated dbdesc discarded by Master, ignore"); | |
402 | return; | |
403 | } | |
404 | ||
405 | if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT)) { | |
406 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
407 | zlog_debug("Master/Slave bit mismatch"); | |
408 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
409 | NULL); | |
410 | return; | |
411 | } | |
412 | ||
413 | if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT)) { | |
414 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
415 | zlog_debug("Initialize bit mismatch"); | |
416 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
417 | NULL); | |
418 | return; | |
419 | } | |
420 | ||
421 | if (memcmp(on->options, dbdesc->options, sizeof(on->options))) { | |
422 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
423 | zlog_debug("Option field mismatch"); | |
424 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
425 | NULL); | |
426 | return; | |
427 | } | |
428 | ||
429 | if (ntohl(dbdesc->seqnum) != on->dbdesc_seqnum) { | |
430 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
431 | zlog_debug( | |
432 | "Sequence number mismatch (%#lx expected)", | |
d7c0a89a | 433 | (unsigned long)on->dbdesc_seqnum); |
d62a17ae | 434 | thread_add_event(master, seqnumber_mismatch, on, 0, |
435 | NULL); | |
436 | return; | |
437 | } | |
438 | break; | |
439 | ||
440 | case OSPF6_NEIGHBOR_LOADING: | |
441 | case OSPF6_NEIGHBOR_FULL: | |
442 | if (!memcmp(dbdesc, &on->dbdesc_last, | |
443 | sizeof(struct ospf6_dbdesc))) { | |
444 | /* Duplicated DatabaseDescription is dropped by master | |
445 | */ | |
446 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
447 | zlog_debug( | |
448 | "Duplicated dbdesc discarded by Master, ignore"); | |
449 | return; | |
450 | } | |
451 | ||
452 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
453 | zlog_debug("Not duplicate dbdesc in state %s", | |
454 | ospf6_neighbor_state_str[on->state]); | |
455 | thread_add_event(master, seqnumber_mismatch, on, 0, NULL); | |
456 | return; | |
457 | ||
458 | default: | |
459 | assert(0); | |
460 | break; | |
461 | } | |
462 | ||
463 | /* Process LSA headers */ | |
464 | for (p = (char *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc)); | |
465 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
466 | p += sizeof(struct ospf6_lsa_header)) { | |
467 | struct ospf6_lsa *his, *mine; | |
468 | struct ospf6_lsdb *lsdb = NULL; | |
469 | ||
470 | his = ospf6_lsa_create_headeronly((struct ospf6_lsa_header *)p); | |
471 | ||
472 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
473 | zlog_debug("%s", his->name); | |
474 | ||
475 | switch (OSPF6_LSA_SCOPE(his->header->type)) { | |
476 | case OSPF6_SCOPE_LINKLOCAL: | |
477 | lsdb = on->ospf6_if->lsdb; | |
478 | break; | |
479 | case OSPF6_SCOPE_AREA: | |
480 | lsdb = on->ospf6_if->area->lsdb; | |
481 | break; | |
482 | case OSPF6_SCOPE_AS: | |
483 | lsdb = on->ospf6_if->area->ospf6->lsdb; | |
484 | break; | |
485 | case OSPF6_SCOPE_RESERVED: | |
486 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
487 | zlog_debug("Ignoring LSA of reserved scope"); | |
488 | ospf6_lsa_delete(his); | |
489 | continue; | |
490 | break; | |
491 | } | |
492 | ||
493 | if (ntohs(his->header->type) == OSPF6_LSTYPE_AS_EXTERNAL | |
494 | && IS_AREA_STUB(on->ospf6_if->area)) { | |
495 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
496 | zlog_debug( | |
497 | "SeqNumMismatch (E-bit mismatch), discard"); | |
498 | ospf6_lsa_delete(his); | |
499 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
500 | NULL); | |
501 | return; | |
502 | } | |
503 | ||
504 | mine = ospf6_lsdb_lookup(his->header->type, his->header->id, | |
505 | his->header->adv_router, lsdb); | |
506 | if (mine == NULL) { | |
507 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
508 | zlog_debug("Add request (No database copy)"); | |
509 | ospf6_lsdb_add(ospf6_lsa_copy(his), on->request_list); | |
510 | } else if (ospf6_lsa_compare(his, mine) < 0) { | |
511 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
512 | zlog_debug("Add request (Received MoreRecent)"); | |
513 | ospf6_lsdb_add(ospf6_lsa_copy(his), on->request_list); | |
514 | } else { | |
515 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
516 | zlog_debug("Discard (Existing MoreRecent)"); | |
517 | } | |
518 | ospf6_lsa_delete(his); | |
519 | } | |
520 | ||
521 | assert(p == OSPF6_MESSAGE_END(oh)); | |
522 | ||
523 | /* Increment sequence number */ | |
524 | on->dbdesc_seqnum++; | |
525 | ||
526 | /* schedule send lsreq */ | |
527 | if (on->request_list->count) | |
528 | thread_add_event(master, ospf6_lsreq_send, on, 0, | |
529 | &on->thread_send_lsreq); | |
530 | ||
531 | THREAD_OFF(on->thread_send_dbdesc); | |
532 | ||
533 | /* More bit check */ | |
534 | if (!CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MBIT) | |
535 | && !CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT)) | |
536 | thread_add_event(master, exchange_done, on, 0, NULL); | |
537 | else { | |
538 | on->thread_send_dbdesc = NULL; | |
539 | thread_add_event(master, ospf6_dbdesc_send_newone, on, 0, | |
540 | &on->thread_send_dbdesc); | |
541 | } | |
542 | ||
543 | /* save last received dbdesc */ | |
544 | memcpy(&on->dbdesc_last, dbdesc, sizeof(struct ospf6_dbdesc)); | |
718e3744 | 545 | } |
546 | ||
d62a17ae | 547 | static void ospf6_dbdesc_recv_slave(struct ospf6_header *oh, |
548 | struct ospf6_neighbor *on) | |
718e3744 | 549 | { |
d62a17ae | 550 | struct ospf6_dbdesc *dbdesc; |
551 | char *p; | |
552 | ||
553 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh | |
554 | + sizeof(struct ospf6_header)); | |
555 | ||
556 | if (on->state < OSPF6_NEIGHBOR_INIT) { | |
557 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
558 | zlog_debug("Neighbor state less than Init, ignore"); | |
559 | return; | |
560 | } | |
561 | ||
562 | switch (on->state) { | |
563 | case OSPF6_NEIGHBOR_TWOWAY: | |
564 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
565 | zlog_debug("Neighbor state is 2-Way, ignore"); | |
566 | return; | |
567 | ||
568 | case OSPF6_NEIGHBOR_INIT: | |
569 | thread_execute(master, twoway_received, on, 0); | |
570 | if (on->state != OSPF6_NEIGHBOR_EXSTART) { | |
571 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
572 | zlog_debug( | |
573 | "Neighbor state is not ExStart, ignore"); | |
574 | return; | |
575 | } | |
576 | /* else fall through to ExStart */ | |
577 | /* fallthru */ | |
578 | case OSPF6_NEIGHBOR_EXSTART: | |
579 | /* If the neighbor is Master, act as Slave. Schedule | |
580 | negotiation_done | |
581 | and process LSA Headers. Otherwise, ignore this message */ | |
582 | if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT) | |
583 | && CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MBIT) | |
584 | && CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT) | |
585 | && ntohs(oh->length) | |
586 | == sizeof(struct ospf6_header) | |
587 | + sizeof(struct ospf6_dbdesc)) { | |
588 | /* set the master/slave bit to slave */ | |
589 | UNSET_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT); | |
590 | ||
591 | /* set the DD sequence number to one specified by master | |
592 | */ | |
593 | on->dbdesc_seqnum = ntohl(dbdesc->seqnum); | |
594 | ||
595 | /* schedule NegotiationDone */ | |
596 | thread_execute(master, negotiation_done, on, 0); | |
597 | ||
598 | /* Record neighbor options */ | |
599 | memcpy(on->options, dbdesc->options, | |
600 | sizeof(on->options)); | |
601 | } else { | |
602 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
603 | zlog_debug("Negotiation failed"); | |
604 | return; | |
605 | } | |
606 | break; | |
607 | ||
608 | case OSPF6_NEIGHBOR_EXCHANGE: | |
609 | if (!memcmp(dbdesc, &on->dbdesc_last, | |
610 | sizeof(struct ospf6_dbdesc))) { | |
611 | /* Duplicated DatabaseDescription causes slave to | |
612 | * retransmit */ | |
613 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
614 | zlog_debug( | |
615 | "Duplicated dbdesc causes retransmit"); | |
616 | THREAD_OFF(on->thread_send_dbdesc); | |
617 | on->thread_send_dbdesc = NULL; | |
618 | thread_add_event(master, ospf6_dbdesc_send, on, 0, | |
619 | &on->thread_send_dbdesc); | |
620 | return; | |
621 | } | |
622 | ||
623 | if (!CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT)) { | |
624 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
625 | zlog_debug("Master/Slave bit mismatch"); | |
626 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
627 | NULL); | |
628 | return; | |
629 | } | |
630 | ||
631 | if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT)) { | |
632 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
633 | zlog_debug("Initialize bit mismatch"); | |
634 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
635 | NULL); | |
636 | return; | |
637 | } | |
638 | ||
639 | if (memcmp(on->options, dbdesc->options, sizeof(on->options))) { | |
640 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
641 | zlog_debug("Option field mismatch"); | |
642 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
643 | NULL); | |
644 | return; | |
645 | } | |
646 | ||
647 | if (ntohl(dbdesc->seqnum) != on->dbdesc_seqnum + 1) { | |
648 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
649 | zlog_debug( | |
650 | "Sequence number mismatch (%#lx expected)", | |
d7c0a89a | 651 | (unsigned long)on->dbdesc_seqnum + 1); |
d62a17ae | 652 | thread_add_event(master, seqnumber_mismatch, on, 0, |
653 | NULL); | |
654 | return; | |
655 | } | |
656 | break; | |
657 | ||
658 | case OSPF6_NEIGHBOR_LOADING: | |
659 | case OSPF6_NEIGHBOR_FULL: | |
660 | if (!memcmp(dbdesc, &on->dbdesc_last, | |
661 | sizeof(struct ospf6_dbdesc))) { | |
662 | /* Duplicated DatabaseDescription causes slave to | |
663 | * retransmit */ | |
664 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
665 | zlog_debug( | |
666 | "Duplicated dbdesc causes retransmit"); | |
667 | THREAD_OFF(on->thread_send_dbdesc); | |
668 | thread_add_event(master, ospf6_dbdesc_send, on, 0, | |
669 | &on->thread_send_dbdesc); | |
670 | return; | |
671 | } | |
672 | ||
673 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
674 | zlog_debug("Not duplicate dbdesc in state %s", | |
675 | ospf6_neighbor_state_str[on->state]); | |
676 | thread_add_event(master, seqnumber_mismatch, on, 0, NULL); | |
677 | return; | |
678 | ||
679 | default: | |
680 | assert(0); | |
681 | break; | |
682 | } | |
683 | ||
684 | /* Process LSA headers */ | |
685 | for (p = (char *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc)); | |
686 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
687 | p += sizeof(struct ospf6_lsa_header)) { | |
688 | struct ospf6_lsa *his, *mine; | |
689 | struct ospf6_lsdb *lsdb = NULL; | |
690 | ||
691 | his = ospf6_lsa_create_headeronly((struct ospf6_lsa_header *)p); | |
692 | ||
693 | switch (OSPF6_LSA_SCOPE(his->header->type)) { | |
694 | case OSPF6_SCOPE_LINKLOCAL: | |
695 | lsdb = on->ospf6_if->lsdb; | |
696 | break; | |
697 | case OSPF6_SCOPE_AREA: | |
698 | lsdb = on->ospf6_if->area->lsdb; | |
699 | break; | |
700 | case OSPF6_SCOPE_AS: | |
701 | lsdb = on->ospf6_if->area->ospf6->lsdb; | |
702 | break; | |
703 | case OSPF6_SCOPE_RESERVED: | |
704 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
705 | zlog_debug("Ignoring LSA of reserved scope"); | |
706 | ospf6_lsa_delete(his); | |
707 | continue; | |
708 | break; | |
709 | } | |
710 | ||
711 | if (OSPF6_LSA_SCOPE(his->header->type) == OSPF6_SCOPE_AS | |
712 | && IS_AREA_STUB(on->ospf6_if->area)) { | |
713 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
714 | zlog_debug("E-bit mismatch with LSA Headers"); | |
715 | ospf6_lsa_delete(his); | |
716 | thread_add_event(master, seqnumber_mismatch, on, 0, | |
717 | NULL); | |
718 | return; | |
719 | } | |
720 | ||
721 | mine = ospf6_lsdb_lookup(his->header->type, his->header->id, | |
722 | his->header->adv_router, lsdb); | |
723 | if (mine == NULL || ospf6_lsa_compare(his, mine) < 0) { | |
724 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
725 | zlog_debug("Add request-list: %s", his->name); | |
726 | ospf6_lsdb_add(ospf6_lsa_copy(his), on->request_list); | |
727 | } | |
728 | ospf6_lsa_delete(his); | |
729 | } | |
730 | ||
731 | assert(p == OSPF6_MESSAGE_END(oh)); | |
732 | ||
733 | /* Set sequence number to Master's */ | |
734 | on->dbdesc_seqnum = ntohl(dbdesc->seqnum); | |
735 | ||
736 | /* schedule send lsreq */ | |
737 | if (on->request_list->count) | |
738 | thread_add_event(master, ospf6_lsreq_send, on, 0, | |
739 | &on->thread_send_lsreq); | |
740 | ||
741 | THREAD_OFF(on->thread_send_dbdesc); | |
742 | thread_add_event(master, ospf6_dbdesc_send_newone, on, 0, | |
743 | &on->thread_send_dbdesc); | |
744 | ||
745 | /* save last received dbdesc */ | |
746 | memcpy(&on->dbdesc_last, dbdesc, sizeof(struct ospf6_dbdesc)); | |
718e3744 | 747 | } |
748 | ||
d62a17ae | 749 | static void ospf6_dbdesc_recv(struct in6_addr *src, struct in6_addr *dst, |
750 | struct ospf6_interface *oi, | |
751 | struct ospf6_header *oh) | |
718e3744 | 752 | { |
d62a17ae | 753 | struct ospf6_neighbor *on; |
754 | struct ospf6_dbdesc *dbdesc; | |
755 | ||
756 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
757 | if (on == NULL) { | |
758 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
759 | zlog_debug("Neighbor not found, ignore"); | |
760 | return; | |
761 | } | |
762 | ||
763 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh | |
764 | + sizeof(struct ospf6_header)); | |
765 | ||
766 | /* Interface MTU check */ | |
767 | if (!oi->mtu_ignore && ntohs(dbdesc->ifmtu) != oi->ifmtu) { | |
768 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
769 | zlog_debug("I/F MTU mismatch"); | |
770 | return; | |
771 | } | |
772 | ||
773 | if (dbdesc->reserved1 || dbdesc->reserved2) { | |
774 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
775 | zlog_debug( | |
776 | "Non-0 reserved field in %s's DbDesc, correct", | |
777 | on->name); | |
778 | dbdesc->reserved1 = 0; | |
779 | dbdesc->reserved2 = 0; | |
780 | } | |
781 | ||
43855e3d CS |
782 | oi->db_desc_in++; |
783 | ||
d62a17ae | 784 | if (ntohl(oh->router_id) < ntohl(ospf6->router_id)) |
785 | ospf6_dbdesc_recv_master(oh, on); | |
786 | else if (ntohl(ospf6->router_id) < ntohl(oh->router_id)) | |
787 | ospf6_dbdesc_recv_slave(oh, on); | |
788 | else { | |
789 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
790 | zlog_debug("Can't decide which is master, ignore"); | |
791 | } | |
718e3744 | 792 | } |
793 | ||
d62a17ae | 794 | static void ospf6_lsreq_recv(struct in6_addr *src, struct in6_addr *dst, |
795 | struct ospf6_interface *oi, | |
796 | struct ospf6_header *oh) | |
718e3744 | 797 | { |
d62a17ae | 798 | struct ospf6_neighbor *on; |
799 | char *p; | |
800 | struct ospf6_lsreq_entry *e; | |
801 | struct ospf6_lsdb *lsdb = NULL; | |
802 | struct ospf6_lsa *lsa; | |
803 | ||
804 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
805 | if (on == NULL) { | |
806 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
807 | zlog_debug("Neighbor not found, ignore"); | |
808 | return; | |
809 | } | |
810 | ||
811 | if (on->state != OSPF6_NEIGHBOR_EXCHANGE | |
812 | && on->state != OSPF6_NEIGHBOR_LOADING | |
813 | && on->state != OSPF6_NEIGHBOR_FULL) { | |
814 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
815 | zlog_debug("Neighbor state less than Exchange, ignore"); | |
816 | return; | |
817 | } | |
818 | ||
43855e3d CS |
819 | oi->ls_req_in++; |
820 | ||
d62a17ae | 821 | /* Process each request */ |
822 | for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header)); | |
823 | p + sizeof(struct ospf6_lsreq_entry) <= OSPF6_MESSAGE_END(oh); | |
824 | p += sizeof(struct ospf6_lsreq_entry)) { | |
825 | e = (struct ospf6_lsreq_entry *)p; | |
826 | ||
827 | switch (OSPF6_LSA_SCOPE(e->type)) { | |
828 | case OSPF6_SCOPE_LINKLOCAL: | |
829 | lsdb = on->ospf6_if->lsdb; | |
830 | break; | |
831 | case OSPF6_SCOPE_AREA: | |
832 | lsdb = on->ospf6_if->area->lsdb; | |
833 | break; | |
834 | case OSPF6_SCOPE_AS: | |
835 | lsdb = on->ospf6_if->area->ospf6->lsdb; | |
836 | break; | |
837 | default: | |
838 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
839 | zlog_debug("Ignoring LSA of reserved scope"); | |
840 | continue; | |
841 | break; | |
842 | } | |
843 | ||
844 | /* Find database copy */ | |
845 | lsa = ospf6_lsdb_lookup(e->type, e->id, e->adv_router, lsdb); | |
846 | if (lsa == NULL) { | |
847 | char id[16], adv_router[16]; | |
848 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) { | |
849 | inet_ntop(AF_INET, &e->id, id, sizeof(id)); | |
850 | inet_ntop(AF_INET, &e->adv_router, adv_router, | |
851 | sizeof(adv_router)); | |
852 | zlog_debug( | |
853 | "Can't find requested [%s Id:%s Adv:%s]", | |
854 | ospf6_lstype_name(e->type), id, | |
855 | adv_router); | |
856 | } | |
857 | thread_add_event(master, bad_lsreq, on, 0, NULL); | |
858 | return; | |
859 | } | |
860 | ||
861 | ospf6_lsdb_add(ospf6_lsa_copy(lsa), on->lsupdate_list); | |
862 | } | |
863 | ||
864 | assert(p == OSPF6_MESSAGE_END(oh)); | |
865 | ||
866 | /* schedule send lsupdate */ | |
867 | THREAD_OFF(on->thread_send_lsupdate); | |
868 | thread_add_event(master, ospf6_lsupdate_send_neighbor, on, 0, | |
869 | &on->thread_send_lsupdate); | |
718e3744 | 870 | } |
871 | ||
abc7ef44 DO |
872 | /* Verify, that the specified memory area contains exactly N valid IPv6 |
873 | prefixes as specified by RFC5340, A.4.1. */ | |
d62a17ae | 874 | static unsigned ospf6_prefixes_examin( |
875 | struct ospf6_prefix *current, /* start of buffer */ | |
876 | unsigned length, | |
d7c0a89a | 877 | const uint32_t req_num_pfxs /* always compared with the actual number |
d62a17ae | 878 | of prefixes */ |
d7c0a89a | 879 | ) |
abc7ef44 | 880 | { |
d7c0a89a QY |
881 | uint8_t requested_pfx_bytes; |
882 | uint32_t real_num_pfxs = 0; | |
d62a17ae | 883 | |
884 | while (length) { | |
885 | if (length < OSPF6_PREFIX_MIN_SIZE) { | |
886 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
887 | RECV)) | |
888 | zlog_debug("%s: undersized IPv6 prefix header", | |
889 | __func__); | |
890 | return MSG_NG; | |
891 | } | |
892 | /* safe to look deeper */ | |
893 | if (current->prefix_length > IPV6_MAX_BITLEN) { | |
894 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
895 | RECV)) | |
896 | zlog_debug("%s: invalid PrefixLength (%u bits)", | |
897 | __func__, current->prefix_length); | |
898 | return MSG_NG; | |
899 | } | |
900 | /* covers both fixed- and variable-sized fields */ | |
901 | requested_pfx_bytes = | |
902 | OSPF6_PREFIX_MIN_SIZE | |
903 | + OSPF6_PREFIX_SPACE(current->prefix_length); | |
904 | if (requested_pfx_bytes > length) { | |
905 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
906 | RECV)) | |
907 | zlog_debug("%s: undersized IPv6 prefix", | |
908 | __func__); | |
909 | return MSG_NG; | |
910 | } | |
911 | /* next prefix */ | |
912 | length -= requested_pfx_bytes; | |
913 | current = (struct ospf6_prefix *)((caddr_t)current | |
914 | + requested_pfx_bytes); | |
915 | real_num_pfxs++; | |
916 | } | |
917 | if (real_num_pfxs != req_num_pfxs) { | |
918 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
919 | zlog_debug( | |
920 | "%s: IPv6 prefix number mismatch (%u required, %u real)", | |
921 | __func__, req_num_pfxs, real_num_pfxs); | |
922 | return MSG_NG; | |
923 | } | |
924 | return MSG_OK; | |
abc7ef44 DO |
925 | } |
926 | ||
927 | /* Verify an LSA to have a valid length and dispatch further (where | |
928 | appropriate) to check if the contents, including nested IPv6 prefixes, | |
929 | is properly sized/aligned within the LSA. Note that this function gets | |
930 | LSA type in network byte order, uses in host byte order and passes to | |
931 | ospf6_lstype_name() in network byte order again. */ | |
d62a17ae | 932 | static unsigned ospf6_lsa_examin(struct ospf6_lsa_header *lsah, |
d7c0a89a QY |
933 | const uint16_t lsalen, |
934 | const uint8_t headeronly) | |
abc7ef44 | 935 | { |
d62a17ae | 936 | struct ospf6_intra_prefix_lsa *intra_prefix_lsa; |
937 | struct ospf6_as_external_lsa *as_external_lsa; | |
938 | struct ospf6_link_lsa *link_lsa; | |
939 | unsigned exp_length; | |
d7c0a89a QY |
940 | uint8_t ltindex; |
941 | uint16_t lsatype; | |
d62a17ae | 942 | |
943 | /* In case an additional minimum length constraint is defined for | |
944 | current | |
945 | LSA type, make sure that this constraint is met. */ | |
946 | lsatype = ntohs(lsah->type); | |
947 | ltindex = lsatype & OSPF6_LSTYPE_FCODE_MASK; | |
948 | if (ltindex < OSPF6_LSTYPE_SIZE && ospf6_lsa_minlen[ltindex] | |
949 | && lsalen < ospf6_lsa_minlen[ltindex] + OSPF6_LSA_HEADER_SIZE) { | |
950 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
951 | zlog_debug("%s: undersized (%u B) LSA", __func__, | |
952 | lsalen); | |
953 | return MSG_NG; | |
954 | } | |
955 | switch (lsatype) { | |
956 | case OSPF6_LSTYPE_ROUTER: | |
957 | /* RFC5340 A.4.3, LSA header + OSPF6_ROUTER_LSA_MIN_SIZE bytes | |
958 | followed | |
959 | by N>=0 interface descriptions. */ | |
960 | if ((lsalen - OSPF6_LSA_HEADER_SIZE - OSPF6_ROUTER_LSA_MIN_SIZE) | |
961 | % OSPF6_ROUTER_LSDESC_FIX_SIZE) { | |
962 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
963 | RECV)) | |
964 | zlog_debug( | |
965 | "%s: interface description alignment error", | |
966 | __func__); | |
967 | return MSG_NG; | |
968 | } | |
969 | break; | |
970 | case OSPF6_LSTYPE_NETWORK: | |
971 | /* RFC5340 A.4.4, LSA header + OSPF6_NETWORK_LSA_MIN_SIZE bytes | |
972 | followed by N>=0 attached router descriptions. */ | |
973 | if ((lsalen - OSPF6_LSA_HEADER_SIZE | |
974 | - OSPF6_NETWORK_LSA_MIN_SIZE) | |
975 | % OSPF6_NETWORK_LSDESC_FIX_SIZE) { | |
976 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
977 | RECV)) | |
978 | zlog_debug( | |
979 | "%s: router description alignment error", | |
980 | __func__); | |
981 | return MSG_NG; | |
982 | } | |
983 | break; | |
984 | case OSPF6_LSTYPE_INTER_PREFIX: | |
985 | /* RFC5340 A.4.5, LSA header + OSPF6_INTER_PREFIX_LSA_MIN_SIZE | |
986 | bytes | |
987 | followed by 3-4 fields of a single IPv6 prefix. */ | |
988 | if (headeronly) | |
989 | break; | |
990 | return ospf6_prefixes_examin( | |
991 | (struct ospf6_prefix | |
992 | *)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE | |
993 | + OSPF6_INTER_PREFIX_LSA_MIN_SIZE), | |
994 | lsalen - OSPF6_LSA_HEADER_SIZE | |
995 | - OSPF6_INTER_PREFIX_LSA_MIN_SIZE, | |
996 | 1); | |
997 | case OSPF6_LSTYPE_INTER_ROUTER: | |
998 | /* RFC5340 A.4.6, fixed-size LSA. */ | |
999 | if (lsalen | |
1000 | > OSPF6_LSA_HEADER_SIZE + OSPF6_INTER_ROUTER_LSA_FIX_SIZE) { | |
1001 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1002 | RECV)) | |
1003 | zlog_debug("%s: oversized (%u B) LSA", __func__, | |
1004 | lsalen); | |
1005 | return MSG_NG; | |
1006 | } | |
1007 | break; | |
1008 | case OSPF6_LSTYPE_AS_EXTERNAL: /* RFC5340 A.4.7, same as A.4.8. */ | |
1009 | case OSPF6_LSTYPE_TYPE_7: | |
1010 | /* RFC5340 A.4.8, LSA header + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE | |
1011 | bytes | |
1012 | followed by 3-4 fields of IPv6 prefix and 3 conditional LSA | |
1013 | fields: | |
1014 | 16 bytes of forwarding address, 4 bytes of external route | |
1015 | tag, | |
1016 | 4 bytes of referenced link state ID. */ | |
1017 | if (headeronly) | |
1018 | break; | |
1019 | as_external_lsa = | |
1020 | (struct ospf6_as_external_lsa | |
1021 | *)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE); | |
1022 | exp_length = | |
1023 | OSPF6_LSA_HEADER_SIZE + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE; | |
1024 | /* To find out if the last optional field (Referenced Link State | |
1025 | ID) is | |
1026 | assumed in this LSA, we need to access fixed fields of the | |
1027 | IPv6 | |
1028 | prefix before ospf6_prefix_examin() confirms its sizing. */ | |
1029 | if (exp_length + OSPF6_PREFIX_MIN_SIZE > lsalen) { | |
1030 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1031 | RECV)) | |
1032 | zlog_debug("%s: undersized (%u B) LSA header", | |
1033 | __func__, lsalen); | |
1034 | return MSG_NG; | |
1035 | } | |
1036 | /* forwarding address */ | |
1037 | if (CHECK_FLAG(as_external_lsa->bits_metric, OSPF6_ASBR_BIT_F)) | |
1038 | exp_length += 16; | |
1039 | /* external route tag */ | |
1040 | if (CHECK_FLAG(as_external_lsa->bits_metric, OSPF6_ASBR_BIT_T)) | |
1041 | exp_length += 4; | |
1042 | /* referenced link state ID */ | |
1043 | if (as_external_lsa->prefix.u._prefix_referenced_lstype) | |
1044 | exp_length += 4; | |
1045 | /* All the fixed-size fields (mandatory and optional) must fit. | |
1046 | I.e., | |
1047 | this check does not include any IPv6 prefix fields. */ | |
1048 | if (exp_length > lsalen) { | |
1049 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1050 | RECV)) | |
1051 | zlog_debug("%s: undersized (%u B) LSA header", | |
1052 | __func__, lsalen); | |
1053 | return MSG_NG; | |
1054 | } | |
1055 | /* The last call completely covers the remainder (IPv6 prefix). | |
1056 | */ | |
1057 | return ospf6_prefixes_examin( | |
1058 | (struct ospf6_prefix | |
1059 | *)((caddr_t)as_external_lsa | |
1060 | + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE), | |
1061 | lsalen - exp_length, 1); | |
1062 | case OSPF6_LSTYPE_LINK: | |
1063 | /* RFC5340 A.4.9, LSA header + OSPF6_LINK_LSA_MIN_SIZE bytes | |
1064 | followed | |
1065 | by N>=0 IPv6 prefix blocks (with N declared beforehand). */ | |
1066 | if (headeronly) | |
1067 | break; | |
1068 | link_lsa = (struct ospf6_link_lsa *)((caddr_t)lsah | |
1069 | + OSPF6_LSA_HEADER_SIZE); | |
1070 | return ospf6_prefixes_examin( | |
1071 | (struct ospf6_prefix *)((caddr_t)link_lsa | |
1072 | + OSPF6_LINK_LSA_MIN_SIZE), | |
1073 | lsalen - OSPF6_LSA_HEADER_SIZE | |
1074 | - OSPF6_LINK_LSA_MIN_SIZE, | |
1075 | ntohl(link_lsa->prefix_num) /* 32 bits */ | |
9d303b37 | 1076 | ); |
d62a17ae | 1077 | case OSPF6_LSTYPE_INTRA_PREFIX: |
1078 | /* RFC5340 A.4.10, LSA header + OSPF6_INTRA_PREFIX_LSA_MIN_SIZE | |
1079 | bytes | |
1080 | followed by N>=0 IPv6 prefixes (with N declared beforehand). | |
1081 | */ | |
1082 | if (headeronly) | |
1083 | break; | |
1084 | intra_prefix_lsa = | |
1085 | (struct ospf6_intra_prefix_lsa | |
1086 | *)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE); | |
1087 | return ospf6_prefixes_examin( | |
1088 | (struct ospf6_prefix | |
1089 | *)((caddr_t)intra_prefix_lsa | |
1090 | + OSPF6_INTRA_PREFIX_LSA_MIN_SIZE), | |
1091 | lsalen - OSPF6_LSA_HEADER_SIZE | |
1092 | - OSPF6_INTRA_PREFIX_LSA_MIN_SIZE, | |
1093 | ntohs(intra_prefix_lsa->prefix_num) /* 16 bits */ | |
9d303b37 | 1094 | ); |
d62a17ae | 1095 | } |
1096 | /* No additional validation is possible for unknown LSA types, which are | |
1097 | themselves valid in OPSFv3, hence the default decision is to accept. | |
1098 | */ | |
1099 | return MSG_OK; | |
abc7ef44 DO |
1100 | } |
1101 | ||
1102 | /* Verify if the provided input buffer is a valid sequence of LSAs. This | |
1103 | includes verification of LSA blocks length/alignment and dispatching | |
1104 | of deeper-level checks. */ | |
1105 | static unsigned | |
d62a17ae | 1106 | ospf6_lsaseq_examin(struct ospf6_lsa_header *lsah, /* start of buffered data */ |
d7c0a89a | 1107 | size_t length, const uint8_t headeronly, |
d62a17ae | 1108 | /* When declared_num_lsas is not 0, compare it to the real |
1109 | number of LSAs | |
1110 | and treat the difference as an error. */ | |
d7c0a89a | 1111 | const uint32_t declared_num_lsas) |
abc7ef44 | 1112 | { |
d7c0a89a | 1113 | uint32_t counted_lsas = 0; |
d62a17ae | 1114 | |
1115 | while (length) { | |
d7c0a89a | 1116 | uint16_t lsalen; |
d62a17ae | 1117 | if (length < OSPF6_LSA_HEADER_SIZE) { |
1118 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1119 | RECV)) | |
1120 | zlog_debug( | |
1121 | "%s: undersized (%zu B) trailing (#%u) LSA header", | |
1122 | __func__, length, counted_lsas); | |
1123 | return MSG_NG; | |
1124 | } | |
1125 | /* save on ntohs() calls here and in the LSA validator */ | |
1126 | lsalen = OSPF6_LSA_SIZE(lsah); | |
1127 | if (lsalen < OSPF6_LSA_HEADER_SIZE) { | |
1128 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, | |
1129 | RECV)) | |
1130 | zlog_debug( | |
1131 | "%s: malformed LSA header #%u, declared length is %u B", | |
1132 | __func__, counted_lsas, lsalen); | |
1133 | return MSG_NG; | |
1134 | } | |
1135 | if (headeronly) { | |
1136 | /* less checks here and in ospf6_lsa_examin() */ | |
1137 | if (MSG_OK != ospf6_lsa_examin(lsah, lsalen, 1)) { | |
1138 | if (IS_OSPF6_DEBUG_MESSAGE( | |
1139 | OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1140 | zlog_debug( | |
1141 | "%s: anomaly in header-only %s LSA #%u", | |
1142 | __func__, | |
1143 | ospf6_lstype_name(lsah->type), | |
1144 | counted_lsas); | |
1145 | return MSG_NG; | |
1146 | } | |
1147 | lsah = (struct ospf6_lsa_header | |
1148 | *)((caddr_t)lsah | |
1149 | + OSPF6_LSA_HEADER_SIZE); | |
1150 | length -= OSPF6_LSA_HEADER_SIZE; | |
1151 | } else { | |
1152 | /* make sure the input buffer is deep enough before | |
1153 | * further checks */ | |
1154 | if (lsalen > length) { | |
1155 | if (IS_OSPF6_DEBUG_MESSAGE( | |
1156 | OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1157 | zlog_debug( | |
1158 | "%s: anomaly in %s LSA #%u: declared length is %u B, buffered length is %zu B", | |
1159 | __func__, | |
1160 | ospf6_lstype_name(lsah->type), | |
1161 | counted_lsas, lsalen, length); | |
1162 | return MSG_NG; | |
1163 | } | |
1164 | if (MSG_OK != ospf6_lsa_examin(lsah, lsalen, 0)) { | |
1165 | if (IS_OSPF6_DEBUG_MESSAGE( | |
1166 | OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1167 | zlog_debug( | |
1168 | "%s: anomaly in %s LSA #%u", | |
1169 | __func__, | |
1170 | ospf6_lstype_name(lsah->type), | |
1171 | counted_lsas); | |
1172 | return MSG_NG; | |
1173 | } | |
1174 | lsah = (struct ospf6_lsa_header *)((caddr_t)lsah | |
1175 | + lsalen); | |
1176 | length -= lsalen; | |
1177 | } | |
1178 | counted_lsas++; | |
1179 | } | |
1180 | ||
1181 | if (declared_num_lsas && counted_lsas != declared_num_lsas) { | |
1182 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1183 | zlog_debug( | |
1184 | "%s: #LSAs declared (%u) does not match actual (%u)", | |
1185 | __func__, declared_num_lsas, counted_lsas); | |
1186 | return MSG_NG; | |
1187 | } | |
1188 | return MSG_OK; | |
abc7ef44 DO |
1189 | } |
1190 | ||
1191 | /* Verify a complete OSPF packet for proper sizing/alignment. */ | |
d62a17ae | 1192 | static unsigned ospf6_packet_examin(struct ospf6_header *oh, |
1193 | const unsigned bytesonwire) | |
abc7ef44 | 1194 | { |
d62a17ae | 1195 | struct ospf6_lsupdate *lsupd; |
1196 | unsigned test; | |
1197 | ||
1198 | /* length, 1st approximation */ | |
1199 | if (bytesonwire < OSPF6_HEADER_SIZE) { | |
1200 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1201 | zlog_debug("%s: undersized (%u B) packet", __func__, | |
1202 | bytesonwire); | |
1203 | return MSG_NG; | |
1204 | } | |
1205 | /* Now it is safe to access header fields. */ | |
1206 | if (bytesonwire != ntohs(oh->length)) { | |
1207 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1208 | zlog_debug( | |
1ba43456 CS |
1209 | "%s: %s packet length error (%u real, %u declared)", |
1210 | __func__, lookup_msg(ospf6_message_type_str, | |
1211 | oh->type, NULL), | |
1212 | bytesonwire, ntohs(oh->length)); | |
d62a17ae | 1213 | return MSG_NG; |
1214 | } | |
1215 | /* version check */ | |
1216 | if (oh->version != OSPFV3_VERSION) { | |
1217 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1218 | zlog_debug("%s: invalid (%u) protocol version", | |
1219 | __func__, oh->version); | |
1220 | return MSG_NG; | |
1221 | } | |
1222 | /* length, 2nd approximation */ | |
1223 | if (oh->type < OSPF6_MESSAGE_TYPE_ALL && ospf6_packet_minlen[oh->type] | |
1224 | && bytesonwire | |
1225 | < OSPF6_HEADER_SIZE + ospf6_packet_minlen[oh->type]) { | |
1226 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1227 | zlog_debug("%s: undersized (%u B) %s packet", __func__, | |
1228 | bytesonwire, | |
1229 | lookup_msg(ospf6_message_type_str, oh->type, | |
1230 | NULL)); | |
1231 | return MSG_NG; | |
1232 | } | |
1233 | /* type-specific deeper validation */ | |
1234 | switch (oh->type) { | |
1235 | case OSPF6_MESSAGE_TYPE_HELLO: | |
1236 | /* RFC5340 A.3.2, packet header + OSPF6_HELLO_MIN_SIZE bytes | |
1237 | followed | |
1238 | by N>=0 router-IDs. */ | |
1239 | if (0 | |
1240 | == (bytesonwire - OSPF6_HEADER_SIZE - OSPF6_HELLO_MIN_SIZE) | |
1241 | % 4) | |
1242 | return MSG_OK; | |
1243 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1244 | zlog_debug("%s: alignment error in %s packet", __func__, | |
1245 | lookup_msg(ospf6_message_type_str, oh->type, | |
1246 | NULL)); | |
1247 | return MSG_NG; | |
1248 | case OSPF6_MESSAGE_TYPE_DBDESC: | |
1249 | /* RFC5340 A.3.3, packet header + OSPF6_DB_DESC_MIN_SIZE bytes | |
1250 | followed | |
1251 | by N>=0 header-only LSAs. */ | |
1252 | test = ospf6_lsaseq_examin( | |
1253 | (struct ospf6_lsa_header *)((caddr_t)oh | |
1254 | + OSPF6_HEADER_SIZE | |
1255 | + OSPF6_DB_DESC_MIN_SIZE), | |
1256 | bytesonwire - OSPF6_HEADER_SIZE | |
1257 | - OSPF6_DB_DESC_MIN_SIZE, | |
1258 | 1, 0); | |
1259 | break; | |
1260 | case OSPF6_MESSAGE_TYPE_LSREQ: | |
1261 | /* RFC5340 A.3.4, packet header + N>=0 LS description blocks. */ | |
1262 | if (0 | |
1263 | == (bytesonwire - OSPF6_HEADER_SIZE - OSPF6_LS_REQ_MIN_SIZE) | |
1264 | % OSPF6_LSREQ_LSDESC_FIX_SIZE) | |
1265 | return MSG_OK; | |
1266 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1267 | zlog_debug("%s: alignment error in %s packet", __func__, | |
1268 | lookup_msg(ospf6_message_type_str, oh->type, | |
1269 | NULL)); | |
1270 | return MSG_NG; | |
1271 | case OSPF6_MESSAGE_TYPE_LSUPDATE: | |
1272 | /* RFC5340 A.3.5, packet header + OSPF6_LS_UPD_MIN_SIZE bytes | |
1273 | followed | |
1274 | by N>=0 full LSAs (with N declared beforehand). */ | |
1275 | lsupd = (struct ospf6_lsupdate *)((caddr_t)oh | |
1276 | + OSPF6_HEADER_SIZE); | |
1277 | test = ospf6_lsaseq_examin( | |
1278 | (struct ospf6_lsa_header *)((caddr_t)lsupd | |
1279 | + OSPF6_LS_UPD_MIN_SIZE), | |
1280 | bytesonwire - OSPF6_HEADER_SIZE - OSPF6_LS_UPD_MIN_SIZE, | |
1281 | 0, ntohl(lsupd->lsa_number) /* 32 bits */ | |
9d303b37 | 1282 | ); |
d62a17ae | 1283 | break; |
1284 | case OSPF6_MESSAGE_TYPE_LSACK: | |
1285 | /* RFC5340 A.3.6, packet header + N>=0 header-only LSAs. */ | |
1286 | test = ospf6_lsaseq_examin( | |
1287 | (struct ospf6_lsa_header *)((caddr_t)oh | |
1288 | + OSPF6_HEADER_SIZE | |
1289 | + OSPF6_LS_ACK_MIN_SIZE), | |
1290 | bytesonwire - OSPF6_HEADER_SIZE - OSPF6_LS_ACK_MIN_SIZE, | |
1291 | 1, 0); | |
1292 | break; | |
1293 | default: | |
1294 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1295 | zlog_debug("%s: invalid (%u) message type", __func__, | |
1296 | oh->type); | |
1297 | return MSG_NG; | |
1298 | } | |
1299 | if (test != MSG_OK | |
1300 | && IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1301 | zlog_debug("%s: anomaly in %s packet", __func__, | |
1302 | lookup_msg(ospf6_message_type_str, oh->type, NULL)); | |
1303 | return test; | |
abc7ef44 DO |
1304 | } |
1305 | ||
1306 | /* Verify particular fields of otherwise correct received OSPF packet to | |
1307 | meet the requirements of RFC. */ | |
d62a17ae | 1308 | static int ospf6_rxpacket_examin(struct ospf6_interface *oi, |
1309 | struct ospf6_header *oh, | |
1310 | const unsigned bytesonwire) | |
abc7ef44 | 1311 | { |
d62a17ae | 1312 | char buf[2][INET_ADDRSTRLEN]; |
1313 | ||
1314 | if (MSG_OK != ospf6_packet_examin(oh, bytesonwire)) | |
1315 | return MSG_NG; | |
1316 | ||
1317 | /* Area-ID check */ | |
1318 | if (oh->area_id != oi->area->area_id) { | |
1319 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) { | |
1320 | if (oh->area_id == OSPF_AREA_BACKBONE) | |
1321 | zlog_debug( | |
1322 | "%s: Message may be via Virtual Link: not supported", | |
1323 | __func__); | |
1324 | else | |
1325 | zlog_debug( | |
1326 | "%s: Area-ID mismatch (my %s, rcvd %s)", | |
1327 | __func__, | |
1328 | inet_ntop(AF_INET, &oi->area->area_id, | |
1329 | buf[0], INET_ADDRSTRLEN), | |
1330 | inet_ntop(AF_INET, &oh->area_id, buf[1], | |
1331 | INET_ADDRSTRLEN)); | |
1332 | } | |
1333 | return MSG_NG; | |
1334 | } | |
1335 | ||
1336 | /* Instance-ID check */ | |
1337 | if (oh->instance_id != oi->instance_id) { | |
1338 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1339 | zlog_debug("%s: Instance-ID mismatch (my %u, rcvd %u)", | |
1340 | __func__, oi->instance_id, oh->instance_id); | |
1341 | return MSG_NG; | |
1342 | } | |
1343 | ||
1344 | /* Router-ID check */ | |
1345 | if (oh->router_id == oi->area->ospf6->router_id) { | |
1346 | zlog_warn("%s: Duplicate Router-ID (%s)", __func__, | |
1347 | inet_ntop(AF_INET, &oh->router_id, buf[0], | |
1348 | INET_ADDRSTRLEN)); | |
1349 | return MSG_NG; | |
1350 | } | |
1351 | return MSG_OK; | |
abc7ef44 DO |
1352 | } |
1353 | ||
d62a17ae | 1354 | static void ospf6_lsupdate_recv(struct in6_addr *src, struct in6_addr *dst, |
1355 | struct ospf6_interface *oi, | |
1356 | struct ospf6_header *oh) | |
718e3744 | 1357 | { |
d62a17ae | 1358 | struct ospf6_neighbor *on; |
1359 | struct ospf6_lsupdate *lsupdate; | |
1360 | char *p; | |
1361 | ||
1362 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
1363 | if (on == NULL) { | |
1364 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1365 | zlog_debug("Neighbor not found, ignore"); | |
1366 | return; | |
1367 | } | |
1368 | ||
1369 | if (on->state != OSPF6_NEIGHBOR_EXCHANGE | |
1370 | && on->state != OSPF6_NEIGHBOR_LOADING | |
1371 | && on->state != OSPF6_NEIGHBOR_FULL) { | |
1372 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1373 | zlog_debug("Neighbor state less than Exchange, ignore"); | |
1374 | return; | |
1375 | } | |
1376 | ||
1377 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
1378 | + sizeof(struct ospf6_header)); | |
718e3744 | 1379 | |
43855e3d CS |
1380 | oi->ls_upd_in++; |
1381 | ||
d62a17ae | 1382 | /* Process LSAs */ |
1383 | for (p = (char *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); | |
1384 | p < OSPF6_MESSAGE_END(oh) | |
1385 | && p + OSPF6_LSA_SIZE(p) <= OSPF6_MESSAGE_END(oh); | |
1386 | p += OSPF6_LSA_SIZE(p)) { | |
1387 | ospf6_receive_lsa(on, (struct ospf6_lsa_header *)p); | |
1388 | } | |
1389 | ||
1390 | assert(p == OSPF6_MESSAGE_END(oh)); | |
508e53e2 | 1391 | } |
1392 | ||
d62a17ae | 1393 | static void ospf6_lsack_recv(struct in6_addr *src, struct in6_addr *dst, |
1394 | struct ospf6_interface *oi, | |
1395 | struct ospf6_header *oh) | |
508e53e2 | 1396 | { |
d62a17ae | 1397 | struct ospf6_neighbor *on; |
1398 | char *p; | |
1399 | struct ospf6_lsa *his, *mine; | |
1400 | struct ospf6_lsdb *lsdb = NULL; | |
1401 | ||
1402 | assert(oh->type == OSPF6_MESSAGE_TYPE_LSACK); | |
1403 | ||
1404 | on = ospf6_neighbor_lookup(oh->router_id, oi); | |
1405 | if (on == NULL) { | |
1406 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1407 | zlog_debug("Neighbor not found, ignore"); | |
1408 | return; | |
1409 | } | |
1410 | ||
1411 | if (on->state != OSPF6_NEIGHBOR_EXCHANGE | |
1412 | && on->state != OSPF6_NEIGHBOR_LOADING | |
1413 | && on->state != OSPF6_NEIGHBOR_FULL) { | |
1414 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1415 | zlog_debug("Neighbor state less than Exchange, ignore"); | |
1416 | return; | |
1417 | } | |
1418 | ||
43855e3d CS |
1419 | oi->ls_ack_in++; |
1420 | ||
d62a17ae | 1421 | for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header)); |
1422 | p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh); | |
1423 | p += sizeof(struct ospf6_lsa_header)) { | |
1424 | his = ospf6_lsa_create_headeronly((struct ospf6_lsa_header *)p); | |
1425 | ||
1426 | switch (OSPF6_LSA_SCOPE(his->header->type)) { | |
1427 | case OSPF6_SCOPE_LINKLOCAL: | |
1428 | lsdb = on->ospf6_if->lsdb; | |
1429 | break; | |
1430 | case OSPF6_SCOPE_AREA: | |
1431 | lsdb = on->ospf6_if->area->lsdb; | |
1432 | break; | |
1433 | case OSPF6_SCOPE_AS: | |
1434 | lsdb = on->ospf6_if->area->ospf6->lsdb; | |
1435 | break; | |
1436 | case OSPF6_SCOPE_RESERVED: | |
1437 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1438 | zlog_debug("Ignoring LSA of reserved scope"); | |
1439 | ospf6_lsa_delete(his); | |
1440 | continue; | |
1441 | break; | |
1442 | } | |
1443 | ||
1444 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1445 | zlog_debug("%s acknowledged by %s", his->name, | |
1446 | on->name); | |
1447 | ||
1448 | /* Find database copy */ | |
1449 | mine = ospf6_lsdb_lookup(his->header->type, his->header->id, | |
1450 | his->header->adv_router, lsdb); | |
1451 | if (mine == NULL) { | |
1452 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1453 | zlog_debug("No database copy"); | |
1454 | ospf6_lsa_delete(his); | |
1455 | continue; | |
1456 | } | |
1457 | ||
1458 | /* Check if the LSA is on his retrans-list */ | |
1459 | mine = ospf6_lsdb_lookup(his->header->type, his->header->id, | |
1460 | his->header->adv_router, | |
1461 | on->retrans_list); | |
1462 | if (mine == NULL) { | |
1463 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1464 | zlog_debug("Not on %s's retrans-list", | |
1465 | on->name); | |
1466 | ospf6_lsa_delete(his); | |
1467 | continue; | |
1468 | } | |
1469 | ||
1470 | if (ospf6_lsa_compare(his, mine) != 0) { | |
1471 | /* Log this questionable acknowledgement, | |
1472 | and examine the next one. */ | |
1473 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1474 | zlog_debug("Questionable acknowledgement"); | |
1475 | ospf6_lsa_delete(his); | |
1476 | continue; | |
1477 | } | |
1478 | ||
1479 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) | |
1480 | zlog_debug( | |
1481 | "Acknowledged, remove from %s's retrans-list", | |
1482 | on->name); | |
1483 | ||
1484 | ospf6_decrement_retrans_count(mine); | |
1485 | if (OSPF6_LSA_IS_MAXAGE(mine)) | |
1486 | ospf6_maxage_remove(on->ospf6_if->area->ospf6); | |
1487 | ospf6_lsdb_remove(mine, on->retrans_list); | |
1488 | ospf6_lsa_delete(his); | |
1489 | } | |
1490 | ||
1491 | assert(p == OSPF6_MESSAGE_END(oh)); | |
508e53e2 | 1492 | } |
1493 | ||
d7c0a89a QY |
1494 | static uint8_t *recvbuf = NULL; |
1495 | static uint8_t *sendbuf = NULL; | |
6ac29a51 | 1496 | static unsigned int iobuflen = 0; |
3b4cd3a9 | 1497 | |
d62a17ae | 1498 | int ospf6_iobuf_size(unsigned int size) |
3b4cd3a9 | 1499 | { |
d7c0a89a | 1500 | uint8_t *recvnew, *sendnew; |
d62a17ae | 1501 | |
1502 | if (size <= iobuflen) | |
1503 | return iobuflen; | |
1504 | ||
1505 | recvnew = XMALLOC(MTYPE_OSPF6_MESSAGE, size); | |
1506 | sendnew = XMALLOC(MTYPE_OSPF6_MESSAGE, size); | |
d62a17ae | 1507 | |
1508 | if (recvbuf) | |
1509 | XFREE(MTYPE_OSPF6_MESSAGE, recvbuf); | |
1510 | if (sendbuf) | |
1511 | XFREE(MTYPE_OSPF6_MESSAGE, sendbuf); | |
1512 | recvbuf = recvnew; | |
1513 | sendbuf = sendnew; | |
1514 | iobuflen = size; | |
1515 | ||
1516 | return iobuflen; | |
3b4cd3a9 | 1517 | } |
508e53e2 | 1518 | |
d62a17ae | 1519 | void ospf6_message_terminate(void) |
ae2254aa | 1520 | { |
d62a17ae | 1521 | if (recvbuf) { |
1522 | XFREE(MTYPE_OSPF6_MESSAGE, recvbuf); | |
1523 | recvbuf = NULL; | |
1524 | } | |
1525 | ||
1526 | if (sendbuf) { | |
1527 | XFREE(MTYPE_OSPF6_MESSAGE, sendbuf); | |
1528 | sendbuf = NULL; | |
1529 | } | |
1530 | ||
1531 | iobuflen = 0; | |
ae2254aa TG |
1532 | } |
1533 | ||
d62a17ae | 1534 | int ospf6_receive(struct thread *thread) |
508e53e2 | 1535 | { |
d62a17ae | 1536 | int sockfd; |
1537 | unsigned int len; | |
1538 | char srcname[64], dstname[64]; | |
1539 | struct in6_addr src, dst; | |
1540 | ifindex_t ifindex; | |
1541 | struct iovec iovector[2]; | |
1542 | struct ospf6_interface *oi; | |
1543 | struct ospf6_header *oh; | |
1544 | ||
1545 | /* add next read thread */ | |
1546 | sockfd = THREAD_FD(thread); | |
1547 | thread_add_read(master, ospf6_receive, NULL, sockfd, NULL); | |
1548 | ||
1549 | /* initialize */ | |
1550 | memset(&src, 0, sizeof(src)); | |
1551 | memset(&dst, 0, sizeof(dst)); | |
1552 | ifindex = 0; | |
1553 | memset(recvbuf, 0, iobuflen); | |
1554 | iovector[0].iov_base = recvbuf; | |
1555 | iovector[0].iov_len = iobuflen; | |
1556 | iovector[1].iov_base = NULL; | |
1557 | iovector[1].iov_len = 0; | |
1558 | ||
1559 | /* receive message */ | |
1560 | len = ospf6_recvmsg(&src, &dst, &ifindex, iovector); | |
1561 | if (len > iobuflen) { | |
af4c2728 | 1562 | flog_err(LIB_ERR_DEVELOPMENT, |
4ba03be5 | 1563 | "Excess message read"); |
d62a17ae | 1564 | return 0; |
1565 | } | |
1566 | ||
1567 | oi = ospf6_interface_lookup_by_ifindex(ifindex); | |
1568 | if (oi == NULL || oi->area == NULL | |
1569 | || CHECK_FLAG(oi->flag, OSPF6_INTERFACE_DISABLE)) { | |
e4c42d65 DS |
1570 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) |
1571 | zlog_debug("Message received on disabled interface"); | |
d62a17ae | 1572 | return 0; |
1573 | } | |
1574 | if (CHECK_FLAG(oi->flag, OSPF6_INTERFACE_PASSIVE)) { | |
1575 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
1576 | zlog_debug("%s: Ignore message on passive interface %s", | |
1577 | __func__, oi->interface->name); | |
1578 | return 0; | |
1579 | } | |
1580 | ||
1581 | oh = (struct ospf6_header *)recvbuf; | |
1582 | if (ospf6_rxpacket_examin(oi, oh, len) != MSG_OK) | |
1583 | return 0; | |
1584 | ||
1585 | /* Being here means, that no sizing/alignment issues were detected in | |
1586 | the input packet. This renders the additional checks performed below | |
1587 | and also in the type-specific dispatching functions a dead code, | |
1588 | which can be dismissed in a cleanup-focused review round later. */ | |
1589 | ||
1590 | /* Log */ | |
1591 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)) { | |
1592 | inet_ntop(AF_INET6, &src, srcname, sizeof(srcname)); | |
1593 | inet_ntop(AF_INET6, &dst, dstname, sizeof(dstname)); | |
1594 | zlog_debug("%s received on %s", | |
1595 | lookup_msg(ospf6_message_type_str, oh->type, NULL), | |
1596 | oi->interface->name); | |
1597 | zlog_debug(" src: %s", srcname); | |
1598 | zlog_debug(" dst: %s", dstname); | |
1599 | ||
1600 | switch (oh->type) { | |
1601 | case OSPF6_MESSAGE_TYPE_HELLO: | |
1602 | ospf6_hello_print(oh); | |
1603 | break; | |
1604 | case OSPF6_MESSAGE_TYPE_DBDESC: | |
1605 | ospf6_dbdesc_print(oh); | |
1606 | break; | |
1607 | case OSPF6_MESSAGE_TYPE_LSREQ: | |
1608 | ospf6_lsreq_print(oh); | |
1609 | break; | |
1610 | case OSPF6_MESSAGE_TYPE_LSUPDATE: | |
1611 | ospf6_lsupdate_print(oh); | |
1612 | break; | |
1613 | case OSPF6_MESSAGE_TYPE_LSACK: | |
1614 | ospf6_lsack_print(oh); | |
1615 | break; | |
1616 | default: | |
1617 | assert(0); | |
1618 | } | |
1619 | } | |
1620 | ||
1621 | switch (oh->type) { | |
1622 | case OSPF6_MESSAGE_TYPE_HELLO: | |
1623 | ospf6_hello_recv(&src, &dst, oi, oh); | |
1624 | break; | |
1625 | ||
1626 | case OSPF6_MESSAGE_TYPE_DBDESC: | |
1627 | ospf6_dbdesc_recv(&src, &dst, oi, oh); | |
1628 | break; | |
1629 | ||
1630 | case OSPF6_MESSAGE_TYPE_LSREQ: | |
1631 | ospf6_lsreq_recv(&src, &dst, oi, oh); | |
1632 | break; | |
1633 | ||
1634 | case OSPF6_MESSAGE_TYPE_LSUPDATE: | |
1635 | ospf6_lsupdate_recv(&src, &dst, oi, oh); | |
1636 | break; | |
1637 | ||
1638 | case OSPF6_MESSAGE_TYPE_LSACK: | |
1639 | ospf6_lsack_recv(&src, &dst, oi, oh); | |
1640 | break; | |
1641 | ||
1642 | default: | |
1643 | assert(0); | |
1644 | } | |
1645 | ||
1646 | return 0; | |
718e3744 | 1647 | } |
1648 | ||
d62a17ae | 1649 | static void ospf6_send(struct in6_addr *src, struct in6_addr *dst, |
1650 | struct ospf6_interface *oi, struct ospf6_header *oh) | |
718e3744 | 1651 | { |
d62a17ae | 1652 | unsigned int len; |
1653 | char srcname[64], dstname[64]; | |
1654 | struct iovec iovector[2]; | |
1655 | ||
1656 | /* initialize */ | |
1657 | iovector[0].iov_base = (caddr_t)oh; | |
1658 | iovector[0].iov_len = ntohs(oh->length); | |
1659 | iovector[1].iov_base = NULL; | |
1660 | iovector[1].iov_len = 0; | |
1661 | ||
1662 | /* fill OSPF header */ | |
1663 | oh->version = OSPFV3_VERSION; | |
1664 | /* message type must be set before */ | |
1665 | /* message length must be set before */ | |
1666 | oh->router_id = oi->area->ospf6->router_id; | |
1667 | oh->area_id = oi->area->area_id; | |
1668 | /* checksum is calculated by kernel */ | |
1669 | oh->instance_id = oi->instance_id; | |
1670 | oh->reserved = 0; | |
1671 | ||
1672 | /* Log */ | |
1673 | if (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND)) { | |
1674 | inet_ntop(AF_INET6, dst, dstname, sizeof(dstname)); | |
1675 | if (src) | |
1676 | inet_ntop(AF_INET6, src, srcname, sizeof(srcname)); | |
1677 | else | |
1678 | memset(srcname, 0, sizeof(srcname)); | |
1679 | zlog_debug("%s send on %s", | |
1680 | lookup_msg(ospf6_message_type_str, oh->type, NULL), | |
1681 | oi->interface->name); | |
1682 | zlog_debug(" src: %s", srcname); | |
1683 | zlog_debug(" dst: %s", dstname); | |
1684 | ||
1685 | switch (oh->type) { | |
1686 | case OSPF6_MESSAGE_TYPE_HELLO: | |
1687 | ospf6_hello_print(oh); | |
1688 | break; | |
1689 | case OSPF6_MESSAGE_TYPE_DBDESC: | |
1690 | ospf6_dbdesc_print(oh); | |
1691 | break; | |
1692 | case OSPF6_MESSAGE_TYPE_LSREQ: | |
1693 | ospf6_lsreq_print(oh); | |
1694 | break; | |
1695 | case OSPF6_MESSAGE_TYPE_LSUPDATE: | |
1696 | ospf6_lsupdate_print(oh); | |
1697 | break; | |
1698 | case OSPF6_MESSAGE_TYPE_LSACK: | |
1699 | ospf6_lsack_print(oh); | |
1700 | break; | |
1701 | default: | |
1702 | zlog_debug("Unknown message"); | |
1703 | assert(0); | |
1704 | break; | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | /* send message */ | |
1709 | len = ospf6_sendmsg(src, dst, &oi->interface->ifindex, iovector); | |
1710 | if (len != ntohs(oh->length)) | |
af4c2728 | 1711 | flog_err(LIB_ERR_DEVELOPMENT, "Could not send entire message"); |
718e3744 | 1712 | } |
1713 | ||
d62a17ae | 1714 | static uint32_t ospf6_packet_max(struct ospf6_interface *oi) |
681b84e8 | 1715 | { |
d62a17ae | 1716 | assert(oi->ifmtu > sizeof(struct ip6_hdr)); |
1717 | return oi->ifmtu - (sizeof(struct ip6_hdr)); | |
681b84e8 DT |
1718 | } |
1719 | ||
d62a17ae | 1720 | int ospf6_hello_send(struct thread *thread) |
718e3744 | 1721 | { |
d62a17ae | 1722 | struct ospf6_interface *oi; |
1723 | struct ospf6_header *oh; | |
1724 | struct ospf6_hello *hello; | |
d7c0a89a | 1725 | uint8_t *p; |
d62a17ae | 1726 | struct listnode *node, *nnode; |
1727 | struct ospf6_neighbor *on; | |
1728 | ||
1729 | oi = (struct ospf6_interface *)THREAD_ARG(thread); | |
1730 | oi->thread_send_hello = (struct thread *)NULL; | |
1731 | ||
1732 | if (oi->state <= OSPF6_INTERFACE_DOWN) { | |
1733 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_HELLO, SEND)) | |
1734 | zlog_debug("Unable to send Hello on down interface %s", | |
1735 | oi->interface->name); | |
1736 | return 0; | |
1737 | } | |
1738 | ||
1739 | if (iobuflen == 0) { | |
1740 | zlog_debug("Unable to send Hello on interface %s iobuflen is 0", | |
1741 | oi->interface->name); | |
1742 | return 0; | |
1743 | } | |
1744 | ||
1745 | /* set next thread */ | |
1746 | thread_add_timer(master, ospf6_hello_send, oi, oi->hello_interval, | |
1747 | &oi->thread_send_hello); | |
1748 | ||
1749 | memset(sendbuf, 0, iobuflen); | |
1750 | oh = (struct ospf6_header *)sendbuf; | |
1751 | hello = (struct ospf6_hello *)((caddr_t)oh | |
1752 | + sizeof(struct ospf6_header)); | |
1753 | ||
1754 | hello->interface_id = htonl(oi->interface->ifindex); | |
1755 | hello->priority = oi->priority; | |
1756 | hello->options[0] = oi->area->options[0]; | |
1757 | hello->options[1] = oi->area->options[1]; | |
1758 | hello->options[2] = oi->area->options[2]; | |
1759 | hello->hello_interval = htons(oi->hello_interval); | |
1760 | hello->dead_interval = htons(oi->dead_interval); | |
1761 | hello->drouter = oi->drouter; | |
1762 | hello->bdrouter = oi->bdrouter; | |
1763 | ||
d7c0a89a | 1764 | p = (uint8_t *)((caddr_t)hello + sizeof(struct ospf6_hello)); |
d62a17ae | 1765 | |
1766 | for (ALL_LIST_ELEMENTS(oi->neighbor_list, node, nnode, on)) { | |
1767 | if (on->state < OSPF6_NEIGHBOR_INIT) | |
1768 | continue; | |
1769 | ||
d7c0a89a | 1770 | if (p - sendbuf + sizeof(uint32_t) > ospf6_packet_max(oi)) { |
d62a17ae | 1771 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_HELLO, |
1772 | SEND)) | |
1773 | zlog_debug( | |
1774 | "sending Hello message: exceeds I/F MTU"); | |
1775 | break; | |
1776 | } | |
1777 | ||
d7c0a89a QY |
1778 | memcpy(p, &on->router_id, sizeof(uint32_t)); |
1779 | p += sizeof(uint32_t); | |
d62a17ae | 1780 | } |
1781 | ||
1782 | oh->type = OSPF6_MESSAGE_TYPE_HELLO; | |
1783 | oh->length = htons(p - sendbuf); | |
1784 | ||
43855e3d CS |
1785 | oi->hello_out++; |
1786 | ||
d62a17ae | 1787 | ospf6_send(oi->linklocal_addr, &allspfrouters6, oi, oh); |
1788 | return 0; | |
718e3744 | 1789 | } |
1790 | ||
d62a17ae | 1791 | int ospf6_dbdesc_send(struct thread *thread) |
718e3744 | 1792 | { |
d62a17ae | 1793 | struct ospf6_neighbor *on; |
1794 | struct ospf6_header *oh; | |
1795 | struct ospf6_dbdesc *dbdesc; | |
d7c0a89a | 1796 | uint8_t *p; |
d62a17ae | 1797 | struct ospf6_lsa *lsa; |
1798 | struct in6_addr *dst; | |
1799 | ||
1800 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
1801 | on->thread_send_dbdesc = (struct thread *)NULL; | |
1802 | ||
1803 | if (on->state < OSPF6_NEIGHBOR_EXSTART) { | |
1804 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_DBDESC, SEND)) | |
1805 | zlog_debug( | |
1806 | "Quit to send DbDesc to neighbor %s state %s", | |
1807 | on->name, ospf6_neighbor_state_str[on->state]); | |
1808 | return 0; | |
1809 | } | |
1810 | ||
1811 | /* set next thread if master */ | |
1812 | if (CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT)) | |
1813 | thread_add_timer(master, ospf6_dbdesc_send, on, | |
1814 | on->ospf6_if->rxmt_interval, | |
1815 | &on->thread_send_dbdesc); | |
1816 | ||
1817 | memset(sendbuf, 0, iobuflen); | |
1818 | oh = (struct ospf6_header *)sendbuf; | |
1819 | dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh | |
1820 | + sizeof(struct ospf6_header)); | |
1821 | ||
1822 | /* if this is initial one, initialize sequence number for DbDesc */ | |
1823 | if (CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_IBIT) | |
1824 | && (on->dbdesc_seqnum == 0)) { | |
1825 | on->dbdesc_seqnum = monotime(NULL); | |
1826 | } | |
1827 | ||
1828 | dbdesc->options[0] = on->ospf6_if->area->options[0]; | |
1829 | dbdesc->options[1] = on->ospf6_if->area->options[1]; | |
1830 | dbdesc->options[2] = on->ospf6_if->area->options[2]; | |
1831 | dbdesc->ifmtu = htons(on->ospf6_if->ifmtu); | |
1832 | dbdesc->bits = on->dbdesc_bits; | |
1833 | dbdesc->seqnum = htonl(on->dbdesc_seqnum); | |
1834 | ||
1835 | /* if this is not initial one, set LSA headers in dbdesc */ | |
d7c0a89a | 1836 | p = (uint8_t *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc)); |
d62a17ae | 1837 | if (!CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_IBIT)) { |
1838 | for (ALL_LSDB(on->dbdesc_list, lsa)) { | |
1839 | ospf6_lsa_age_update_to_send(lsa, | |
1840 | on->ospf6_if->transdelay); | |
1841 | ||
1842 | /* MTU check */ | |
1843 | if (p - sendbuf + sizeof(struct ospf6_lsa_header) | |
1844 | > ospf6_packet_max(on->ospf6_if)) { | |
1845 | ospf6_lsdb_lsa_unlock(lsa); | |
1846 | break; | |
1847 | } | |
1848 | memcpy(p, lsa->header, sizeof(struct ospf6_lsa_header)); | |
1849 | p += sizeof(struct ospf6_lsa_header); | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | oh->type = OSPF6_MESSAGE_TYPE_DBDESC; | |
1854 | oh->length = htons(p - sendbuf); | |
1855 | ||
1856 | ||
1857 | if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT) | |
1858 | dst = &allspfrouters6; | |
1859 | else | |
1860 | dst = &on->linklocal_addr; | |
1861 | ||
43855e3d CS |
1862 | on->ospf6_if->db_desc_out++; |
1863 | ||
d62a17ae | 1864 | ospf6_send(on->ospf6_if->linklocal_addr, dst, on->ospf6_if, oh); |
1865 | ||
1866 | return 0; | |
718e3744 | 1867 | } |
1868 | ||
d62a17ae | 1869 | int ospf6_dbdesc_send_newone(struct thread *thread) |
718e3744 | 1870 | { |
d62a17ae | 1871 | struct ospf6_neighbor *on; |
1872 | struct ospf6_lsa *lsa; | |
1873 | unsigned int size = 0; | |
1874 | ||
1875 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
1876 | ospf6_lsdb_remove_all(on->dbdesc_list); | |
1877 | ||
1878 | /* move LSAs from summary_list to dbdesc_list (within neighbor | |
1879 | structure) | |
1880 | so that ospf6_send_dbdesc () can send those LSAs */ | |
1881 | size = sizeof(struct ospf6_lsa_header) + sizeof(struct ospf6_dbdesc); | |
1882 | for (ALL_LSDB(on->summary_list, lsa)) { | |
1883 | if (size + sizeof(struct ospf6_lsa_header) | |
1884 | > ospf6_packet_max(on->ospf6_if)) { | |
1885 | ospf6_lsdb_lsa_unlock(lsa); | |
1886 | break; | |
1887 | } | |
1888 | ||
1889 | ospf6_lsdb_add(ospf6_lsa_copy(lsa), on->dbdesc_list); | |
1890 | ospf6_lsdb_remove(lsa, on->summary_list); | |
1891 | size += sizeof(struct ospf6_lsa_header); | |
1892 | } | |
1893 | ||
1894 | if (on->summary_list->count == 0) | |
1895 | UNSET_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT); | |
1896 | ||
1897 | /* If slave, More bit check must be done here */ | |
1898 | if (!CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT) && /* Slave */ | |
1899 | !CHECK_FLAG(on->dbdesc_last.bits, OSPF6_DBDESC_MBIT) | |
1900 | && !CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT)) | |
1901 | thread_add_event(master, exchange_done, on, 0, NULL); | |
1902 | ||
1903 | thread_execute(master, ospf6_dbdesc_send, on, 0); | |
1904 | return 0; | |
508e53e2 | 1905 | } |
718e3744 | 1906 | |
d62a17ae | 1907 | int ospf6_lsreq_send(struct thread *thread) |
508e53e2 | 1908 | { |
d62a17ae | 1909 | struct ospf6_neighbor *on; |
1910 | struct ospf6_header *oh; | |
1911 | struct ospf6_lsreq_entry *e; | |
d7c0a89a | 1912 | uint8_t *p; |
d62a17ae | 1913 | struct ospf6_lsa *lsa, *last_req; |
1914 | ||
1915 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
1916 | on->thread_send_lsreq = (struct thread *)NULL; | |
1917 | ||
1918 | /* LSReq will be sent only in ExStart or Loading */ | |
1919 | if (on->state != OSPF6_NEIGHBOR_EXCHANGE | |
1920 | && on->state != OSPF6_NEIGHBOR_LOADING) { | |
1921 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSREQ, SEND)) | |
1922 | zlog_debug("Quit to send LSReq to neighbor %s state %s", | |
1923 | on->name, | |
1924 | ospf6_neighbor_state_str[on->state]); | |
1925 | return 0; | |
1926 | } | |
1927 | ||
1928 | /* schedule loading_done if request list is empty */ | |
1929 | if (on->request_list->count == 0) { | |
1930 | thread_add_event(master, loading_done, on, 0, NULL); | |
1931 | return 0; | |
1932 | } | |
1933 | ||
1934 | memset(sendbuf, 0, iobuflen); | |
1935 | oh = (struct ospf6_header *)sendbuf; | |
1936 | last_req = NULL; | |
1937 | ||
1938 | /* set Request entries in lsreq */ | |
d7c0a89a | 1939 | p = (uint8_t *)((caddr_t)oh + sizeof(struct ospf6_header)); |
d62a17ae | 1940 | for (ALL_LSDB(on->request_list, lsa)) { |
1941 | /* MTU check */ | |
1942 | if (p - sendbuf + sizeof(struct ospf6_lsreq_entry) | |
1943 | > ospf6_packet_max(on->ospf6_if)) { | |
1944 | ospf6_lsdb_lsa_unlock(lsa); | |
1945 | break; | |
1946 | } | |
1947 | ||
1948 | e = (struct ospf6_lsreq_entry *)p; | |
1949 | e->type = lsa->header->type; | |
1950 | e->id = lsa->header->id; | |
1951 | e->adv_router = lsa->header->adv_router; | |
1952 | p += sizeof(struct ospf6_lsreq_entry); | |
1953 | last_req = lsa; | |
1954 | } | |
1955 | ||
1956 | if (last_req != NULL) { | |
1957 | if (on->last_ls_req != NULL) { | |
1958 | ospf6_lsa_unlock(on->last_ls_req); | |
1959 | } | |
1960 | ospf6_lsa_lock(last_req); | |
1961 | on->last_ls_req = last_req; | |
1962 | } | |
1963 | ||
1964 | oh->type = OSPF6_MESSAGE_TYPE_LSREQ; | |
1965 | oh->length = htons(p - sendbuf); | |
1966 | ||
43855e3d CS |
1967 | on->ospf6_if->ls_req_out++; |
1968 | ||
d62a17ae | 1969 | if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT) |
1970 | ospf6_send(on->ospf6_if->linklocal_addr, &allspfrouters6, | |
1971 | on->ospf6_if, oh); | |
1972 | else | |
1973 | ospf6_send(on->ospf6_if->linklocal_addr, &on->linklocal_addr, | |
1974 | on->ospf6_if, oh); | |
1975 | ||
1976 | /* set next thread */ | |
1977 | if (on->request_list->count != 0) { | |
1978 | on->thread_send_lsreq = NULL; | |
1979 | thread_add_timer(master, ospf6_lsreq_send, on, | |
1980 | on->ospf6_if->rxmt_interval, | |
1981 | &on->thread_send_lsreq); | |
1982 | } | |
1983 | ||
1984 | return 0; | |
718e3744 | 1985 | } |
1986 | ||
1ba43456 CS |
1987 | static void ospf6_send_lsupdate(struct ospf6_neighbor *on, |
1988 | struct ospf6_interface *oi, | |
1989 | struct ospf6_header *oh) | |
1990 | { | |
1991 | ||
1992 | if (on) { | |
43855e3d CS |
1993 | on->ospf6_if->ls_upd_out++; |
1994 | ||
996c9314 LB |
1995 | if ((on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT) |
1996 | || (on->ospf6_if->state == OSPF6_INTERFACE_DR) | |
1997 | || (on->ospf6_if->state == OSPF6_INTERFACE_BDR)) { | |
1ba43456 CS |
1998 | ospf6_send(on->ospf6_if->linklocal_addr, |
1999 | &allspfrouters6, on->ospf6_if, oh); | |
2000 | } else { | |
2001 | ospf6_send(on->ospf6_if->linklocal_addr, | |
2002 | &on->linklocal_addr, on->ospf6_if, oh); | |
2003 | } | |
2004 | } else if (oi) { | |
43855e3d CS |
2005 | |
2006 | oi->ls_upd_out++; | |
2007 | ||
996c9314 LB |
2008 | if ((oi->state == OSPF6_INTERFACE_POINTTOPOINT) |
2009 | || (oi->state == OSPF6_INTERFACE_DR) | |
2010 | || (oi->state == OSPF6_INTERFACE_BDR)) { | |
1ba43456 CS |
2011 | ospf6_send(oi->linklocal_addr, &allspfrouters6, oi, oh); |
2012 | } else { | |
2013 | ospf6_send(oi->linklocal_addr, &alldrouters6, oi, oh); | |
2014 | } | |
2015 | } | |
2016 | } | |
2017 | ||
d62a17ae | 2018 | int ospf6_lsupdate_send_neighbor(struct thread *thread) |
718e3744 | 2019 | { |
d62a17ae | 2020 | struct ospf6_neighbor *on; |
2021 | struct ospf6_header *oh; | |
2022 | struct ospf6_lsupdate *lsupdate; | |
d7c0a89a | 2023 | uint8_t *p; |
d62a17ae | 2024 | int lsa_cnt; |
2025 | struct ospf6_lsa *lsa; | |
2026 | ||
2027 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
2028 | on->thread_send_lsupdate = (struct thread *)NULL; | |
2029 | ||
2030 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) | |
2031 | zlog_debug("LSUpdate to neighbor %s", on->name); | |
2032 | ||
2033 | if (on->state < OSPF6_NEIGHBOR_EXCHANGE) { | |
2034 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) | |
2035 | zlog_debug("Quit to send (neighbor state %s)", | |
2036 | ospf6_neighbor_state_str[on->state]); | |
2037 | return 0; | |
2038 | } | |
2039 | ||
2040 | memset(sendbuf, 0, iobuflen); | |
2041 | oh = (struct ospf6_header *)sendbuf; | |
2042 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
2043 | + sizeof(struct ospf6_header)); | |
2044 | ||
d7c0a89a | 2045 | p = (uint8_t *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
d62a17ae | 2046 | lsa_cnt = 0; |
2047 | ||
2048 | /* lsupdate_list lists those LSA which doesn't need to be | |
2049 | retransmitted. remove those from the list */ | |
2050 | for (ALL_LSDB(on->lsupdate_list, lsa)) { | |
2051 | /* MTU check */ | |
2052 | if ((p - sendbuf + (unsigned int)OSPF6_LSA_SIZE(lsa->header)) | |
2053 | > ospf6_packet_max(on->ospf6_if)) { | |
1ba43456 CS |
2054 | if (lsa_cnt) { |
2055 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2056 | oh->length = htons(p - sendbuf); | |
2057 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2058 | ||
2059 | ospf6_send_lsupdate(on, NULL, oh); | |
2060 | ||
2061 | memset(sendbuf, 0, iobuflen); | |
2062 | oh = (struct ospf6_header *)sendbuf; | |
996c9314 LB |
2063 | lsupdate = (struct ospf6_lsupdate |
2064 | *)((caddr_t)oh | |
2065 | + sizeof(struct | |
2066 | ospf6_header)); | |
1ba43456 | 2067 | |
d7c0a89a QY |
2068 | p = (uint8_t *)((caddr_t)lsupdate |
2069 | + sizeof(struct | |
2070 | ospf6_lsupdate)); | |
1ba43456 CS |
2071 | lsa_cnt = 0; |
2072 | } | |
d62a17ae | 2073 | } |
2074 | ||
2075 | ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay); | |
2076 | memcpy(p, lsa->header, OSPF6_LSA_SIZE(lsa->header)); | |
2077 | p += OSPF6_LSA_SIZE(lsa->header); | |
2078 | lsa_cnt++; | |
2079 | ||
2080 | assert(lsa->lock == 2); | |
2081 | ospf6_lsdb_remove(lsa, on->lsupdate_list); | |
2082 | } | |
2083 | ||
2084 | if (lsa_cnt) { | |
2085 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2086 | oh->length = htons(p - sendbuf); | |
2087 | lsupdate->lsa_number = htonl(lsa_cnt); | |
1ba43456 | 2088 | ospf6_send_lsupdate(on, NULL, oh); |
d62a17ae | 2089 | } |
2090 | ||
2091 | /* The addresses used for retransmissions are different from those sent | |
2092 | the | |
2093 | first time and so we need to separate them here. | |
2094 | */ | |
2095 | memset(sendbuf, 0, iobuflen); | |
2096 | oh = (struct ospf6_header *)sendbuf; | |
2097 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
2098 | + sizeof(struct ospf6_header)); | |
d7c0a89a | 2099 | p = (uint8_t *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
d62a17ae | 2100 | lsa_cnt = 0; |
2101 | ||
2102 | for (ALL_LSDB(on->retrans_list, lsa)) { | |
2103 | /* MTU check */ | |
2104 | if ((p - sendbuf + (unsigned int)OSPF6_LSA_SIZE(lsa->header)) | |
2105 | > ospf6_packet_max(on->ospf6_if)) { | |
1ba43456 CS |
2106 | if (lsa_cnt) { |
2107 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2108 | oh->length = htons(p - sendbuf); | |
2109 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2110 | ||
996c9314 LB |
2111 | if (on->ospf6_if->state |
2112 | == OSPF6_INTERFACE_POINTTOPOINT) { | |
1ba43456 CS |
2113 | ospf6_send(on->ospf6_if->linklocal_addr, |
2114 | &allspfrouters6, | |
2115 | on->ospf6_if, oh); | |
2116 | } else { | |
2117 | ospf6_send(on->ospf6_if->linklocal_addr, | |
2118 | &on->linklocal_addr, | |
2119 | on->ospf6_if, oh); | |
2120 | } | |
2121 | ||
2122 | memset(sendbuf, 0, iobuflen); | |
2123 | oh = (struct ospf6_header *)sendbuf; | |
996c9314 LB |
2124 | lsupdate = (struct ospf6_lsupdate |
2125 | *)((caddr_t)oh | |
2126 | + sizeof(struct | |
2127 | ospf6_header)); | |
d7c0a89a QY |
2128 | p = (uint8_t *)((caddr_t)lsupdate |
2129 | + sizeof(struct | |
2130 | ospf6_lsupdate)); | |
1ba43456 CS |
2131 | lsa_cnt = 0; |
2132 | } | |
d62a17ae | 2133 | } |
2134 | ||
2135 | ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay); | |
2136 | memcpy(p, lsa->header, OSPF6_LSA_SIZE(lsa->header)); | |
2137 | p += OSPF6_LSA_SIZE(lsa->header); | |
2138 | lsa_cnt++; | |
2139 | } | |
2140 | ||
2141 | if (lsa_cnt) { | |
2142 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2143 | oh->length = htons(p - sendbuf); | |
2144 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2145 | ||
2146 | if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT) | |
2147 | ospf6_send(on->ospf6_if->linklocal_addr, | |
2148 | &allspfrouters6, on->ospf6_if, oh); | |
2149 | else | |
2150 | ospf6_send(on->ospf6_if->linklocal_addr, | |
2151 | &on->linklocal_addr, on->ospf6_if, oh); | |
2152 | } | |
2153 | ||
2154 | if (on->lsupdate_list->count != 0) { | |
2155 | on->thread_send_lsupdate = NULL; | |
2156 | thread_add_event(master, ospf6_lsupdate_send_neighbor, on, 0, | |
2157 | &on->thread_send_lsupdate); | |
2158 | } else if (on->retrans_list->count != 0) { | |
2159 | on->thread_send_lsupdate = NULL; | |
2160 | thread_add_timer(master, ospf6_lsupdate_send_neighbor, on, | |
2161 | on->ospf6_if->rxmt_interval, | |
2162 | &on->thread_send_lsupdate); | |
2163 | } | |
2164 | return 0; | |
718e3744 | 2165 | } |
2166 | ||
76249532 CS |
2167 | int ospf6_lsupdate_send_neighbor_now(struct ospf6_neighbor *on, |
2168 | struct ospf6_lsa *lsa) | |
2169 | { | |
2170 | struct ospf6_header *oh; | |
2171 | struct ospf6_lsupdate *lsupdate; | |
d7c0a89a | 2172 | uint8_t *p; |
76249532 CS |
2173 | int lsa_cnt = 0; |
2174 | ||
2175 | memset(sendbuf, 0, iobuflen); | |
2176 | oh = (struct ospf6_header *)sendbuf; | |
2177 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
2178 | + sizeof(struct ospf6_header)); | |
2179 | ||
d7c0a89a | 2180 | p = (uint8_t *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
76249532 CS |
2181 | ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay); |
2182 | memcpy(p, lsa->header, OSPF6_LSA_SIZE(lsa->header)); | |
2183 | p += OSPF6_LSA_SIZE(lsa->header); | |
2184 | lsa_cnt++; | |
2185 | ||
2186 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2187 | oh->length = htons(p - sendbuf); | |
2188 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2189 | ||
996c9314 LB |
2190 | if (IS_OSPF6_DEBUG_FLOODING |
2191 | || IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) | |
76249532 | 2192 | zlog_debug("%s: Send lsupdate with lsa %s (age %u)", |
996c9314 LB |
2193 | __PRETTY_FUNCTION__, lsa->name, |
2194 | ntohs(lsa->header->age)); | |
76249532 CS |
2195 | |
2196 | ospf6_send_lsupdate(on, NULL, oh); | |
2197 | ||
2198 | return 0; | |
2199 | } | |
2200 | ||
d62a17ae | 2201 | int ospf6_lsupdate_send_interface(struct thread *thread) |
718e3744 | 2202 | { |
d62a17ae | 2203 | struct ospf6_interface *oi; |
2204 | struct ospf6_header *oh; | |
2205 | struct ospf6_lsupdate *lsupdate; | |
d7c0a89a | 2206 | uint8_t *p; |
d62a17ae | 2207 | int lsa_cnt; |
2208 | struct ospf6_lsa *lsa; | |
2209 | ||
2210 | oi = (struct ospf6_interface *)THREAD_ARG(thread); | |
2211 | oi->thread_send_lsupdate = (struct thread *)NULL; | |
2212 | ||
2213 | if (oi->state <= OSPF6_INTERFACE_WAITING) { | |
2214 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) | |
2215 | zlog_debug( | |
2216 | "Quit to send LSUpdate to interface %s state %s", | |
2217 | oi->interface->name, | |
2218 | ospf6_interface_state_str[oi->state]); | |
2219 | return 0; | |
2220 | } | |
2221 | ||
2222 | /* if we have nothing to send, return */ | |
2223 | if (oi->lsupdate_list->count == 0) | |
2224 | return 0; | |
2225 | ||
2226 | memset(sendbuf, 0, iobuflen); | |
2227 | oh = (struct ospf6_header *)sendbuf; | |
2228 | lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh | |
2229 | + sizeof(struct ospf6_header)); | |
2230 | ||
d7c0a89a | 2231 | p = (uint8_t *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate)); |
d62a17ae | 2232 | lsa_cnt = 0; |
2233 | ||
2234 | for (ALL_LSDB(oi->lsupdate_list, lsa)) { | |
2235 | /* MTU check */ | |
2236 | if ((p - sendbuf + ((unsigned int)OSPF6_LSA_SIZE(lsa->header))) | |
2237 | > ospf6_packet_max(oi)) { | |
1ba43456 CS |
2238 | if (lsa_cnt) { |
2239 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2240 | oh->length = htons(p - sendbuf); | |
2241 | lsupdate->lsa_number = htonl(lsa_cnt); | |
2242 | ||
2243 | ospf6_send_lsupdate(NULL, oi, oh); | |
43855e3d | 2244 | if (IS_OSPF6_DEBUG_MESSAGE( |
996c9314 | 2245 | OSPF6_MESSAGE_TYPE_LSUPDATE, SEND)) |
43855e3d CS |
2246 | zlog_debug("%s: LSUpdate length %d", |
2247 | __PRETTY_FUNCTION__, | |
2248 | ntohs(oh->length)); | |
1ba43456 CS |
2249 | |
2250 | memset(sendbuf, 0, iobuflen); | |
2251 | oh = (struct ospf6_header *)sendbuf; | |
996c9314 LB |
2252 | lsupdate = (struct ospf6_lsupdate |
2253 | *)((caddr_t)oh | |
2254 | + sizeof(struct | |
2255 | ospf6_header)); | |
1ba43456 | 2256 | |
d7c0a89a QY |
2257 | p = (uint8_t *)((caddr_t)lsupdate |
2258 | + sizeof(struct | |
2259 | ospf6_lsupdate)); | |
1ba43456 CS |
2260 | lsa_cnt = 0; |
2261 | } | |
d62a17ae | 2262 | } |
2263 | ||
2264 | ospf6_lsa_age_update_to_send(lsa, oi->transdelay); | |
2265 | memcpy(p, lsa->header, OSPF6_LSA_SIZE(lsa->header)); | |
2266 | p += OSPF6_LSA_SIZE(lsa->header); | |
2267 | lsa_cnt++; | |
2268 | ||
2269 | assert(lsa->lock == 2); | |
2270 | ospf6_lsdb_remove(lsa, oi->lsupdate_list); | |
2271 | } | |
2272 | ||
2273 | if (lsa_cnt) { | |
d62a17ae | 2274 | oh->type = OSPF6_MESSAGE_TYPE_LSUPDATE; |
2275 | oh->length = htons(p - sendbuf); | |
1ba43456 | 2276 | lsupdate->lsa_number = htonl(lsa_cnt); |
d62a17ae | 2277 | |
1ba43456 | 2278 | ospf6_send_lsupdate(NULL, oi, oh); |
d62a17ae | 2279 | } |
2280 | ||
2281 | if (oi->lsupdate_list->count > 0) { | |
2282 | oi->thread_send_lsupdate = NULL; | |
2283 | thread_add_event(master, ospf6_lsupdate_send_interface, oi, 0, | |
2284 | &oi->thread_send_lsupdate); | |
2285 | } | |
2286 | ||
2287 | return 0; | |
718e3744 | 2288 | } |
2289 | ||
d62a17ae | 2290 | int ospf6_lsack_send_neighbor(struct thread *thread) |
718e3744 | 2291 | { |
d62a17ae | 2292 | struct ospf6_neighbor *on; |
2293 | struct ospf6_header *oh; | |
d7c0a89a | 2294 | uint8_t *p; |
d62a17ae | 2295 | struct ospf6_lsa *lsa; |
2296 | int lsa_cnt = 0; | |
2297 | ||
2298 | on = (struct ospf6_neighbor *)THREAD_ARG(thread); | |
2299 | on->thread_send_lsack = (struct thread *)NULL; | |
2300 | ||
2301 | if (on->state < OSPF6_NEIGHBOR_EXCHANGE) { | |
2302 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND)) | |
2303 | zlog_debug("Quit to send LSAck to neighbor %s state %s", | |
2304 | on->name, | |
2305 | ospf6_neighbor_state_str[on->state]); | |
2306 | return 0; | |
2307 | } | |
2308 | ||
2309 | /* if we have nothing to send, return */ | |
2310 | if (on->lsack_list->count == 0) | |
2311 | return 0; | |
2312 | ||
2313 | memset(sendbuf, 0, iobuflen); | |
2314 | oh = (struct ospf6_header *)sendbuf; | |
2315 | ||
d7c0a89a | 2316 | p = (uint8_t *)((caddr_t)oh + sizeof(struct ospf6_header)); |
d62a17ae | 2317 | |
2318 | for (ALL_LSDB(on->lsack_list, lsa)) { | |
2319 | /* MTU check */ | |
2320 | if (p - sendbuf + sizeof(struct ospf6_lsa_header) | |
2321 | > ospf6_packet_max(on->ospf6_if)) { | |
2322 | /* if we run out of packet size/space here, | |
2323 | better to try again soon. */ | |
1ba43456 CS |
2324 | if (lsa_cnt) { |
2325 | oh->type = OSPF6_MESSAGE_TYPE_LSACK; | |
2326 | oh->length = htons(p - sendbuf); | |
2327 | ||
43855e3d CS |
2328 | on->ospf6_if->ls_ack_out++; |
2329 | ||
1ba43456 | 2330 | ospf6_send(on->ospf6_if->linklocal_addr, |
996c9314 LB |
2331 | &on->linklocal_addr, on->ospf6_if, |
2332 | oh); | |
1ba43456 CS |
2333 | |
2334 | memset(sendbuf, 0, iobuflen); | |
2335 | oh = (struct ospf6_header *)sendbuf; | |
d7c0a89a QY |
2336 | p = (uint8_t *)((caddr_t)oh |
2337 | + sizeof(struct ospf6_header)); | |
1ba43456 CS |
2338 | lsa_cnt = 0; |
2339 | } | |
d62a17ae | 2340 | } |
2341 | ||
2342 | ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay); | |
2343 | memcpy(p, lsa->header, sizeof(struct ospf6_lsa_header)); | |
2344 | p += sizeof(struct ospf6_lsa_header); | |
2345 | ||
2346 | assert(lsa->lock == 2); | |
2347 | ospf6_lsdb_remove(lsa, on->lsack_list); | |
2348 | lsa_cnt++; | |
2349 | } | |
2350 | ||
2351 | if (lsa_cnt) { | |
2352 | oh->type = OSPF6_MESSAGE_TYPE_LSACK; | |
2353 | oh->length = htons(p - sendbuf); | |
2354 | ||
43855e3d CS |
2355 | on->ospf6_if->ls_ack_out++; |
2356 | ||
d62a17ae | 2357 | ospf6_send(on->ospf6_if->linklocal_addr, &on->linklocal_addr, |
2358 | on->ospf6_if, oh); | |
2359 | } | |
2360 | ||
2361 | if (on->lsack_list->count > 0) | |
2362 | thread_add_event(master, ospf6_lsack_send_neighbor, on, 0, | |
2363 | &on->thread_send_lsack); | |
2364 | ||
2365 | return 0; | |
718e3744 | 2366 | } |
2367 | ||
d62a17ae | 2368 | int ospf6_lsack_send_interface(struct thread *thread) |
718e3744 | 2369 | { |
d62a17ae | 2370 | struct ospf6_interface *oi; |
2371 | struct ospf6_header *oh; | |
d7c0a89a | 2372 | uint8_t *p; |
d62a17ae | 2373 | struct ospf6_lsa *lsa; |
2374 | int lsa_cnt = 0; | |
2375 | ||
2376 | oi = (struct ospf6_interface *)THREAD_ARG(thread); | |
2377 | oi->thread_send_lsack = (struct thread *)NULL; | |
2378 | ||
2379 | if (oi->state <= OSPF6_INTERFACE_WAITING) { | |
2380 | if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND)) | |
2381 | zlog_debug( | |
2382 | "Quit to send LSAck to interface %s state %s", | |
2383 | oi->interface->name, | |
2384 | ospf6_interface_state_str[oi->state]); | |
2385 | return 0; | |
2386 | } | |
2387 | ||
2388 | /* if we have nothing to send, return */ | |
2389 | if (oi->lsack_list->count == 0) | |
2390 | return 0; | |
2391 | ||
2392 | memset(sendbuf, 0, iobuflen); | |
2393 | oh = (struct ospf6_header *)sendbuf; | |
2394 | ||
d7c0a89a | 2395 | p = (uint8_t *)((caddr_t)oh + sizeof(struct ospf6_header)); |
d62a17ae | 2396 | |
2397 | for (ALL_LSDB(oi->lsack_list, lsa)) { | |
2398 | /* MTU check */ | |
2399 | if (p - sendbuf + sizeof(struct ospf6_lsa_header) | |
2400 | > ospf6_packet_max(oi)) { | |
2401 | /* if we run out of packet size/space here, | |
2402 | better to try again soon. */ | |
2403 | THREAD_OFF(oi->thread_send_lsack); | |
2404 | thread_add_event(master, ospf6_lsack_send_interface, oi, | |
2405 | 0, &oi->thread_send_lsack); | |
2406 | ||
2407 | ospf6_lsdb_lsa_unlock(lsa); | |
2408 | break; | |
2409 | } | |
2410 | ||
2411 | ospf6_lsa_age_update_to_send(lsa, oi->transdelay); | |
2412 | memcpy(p, lsa->header, sizeof(struct ospf6_lsa_header)); | |
2413 | p += sizeof(struct ospf6_lsa_header); | |
2414 | ||
2415 | assert(lsa->lock == 2); | |
2416 | ospf6_lsdb_remove(lsa, oi->lsack_list); | |
2417 | lsa_cnt++; | |
2418 | } | |
2419 | ||
2420 | if (lsa_cnt) { | |
2421 | oh->type = OSPF6_MESSAGE_TYPE_LSACK; | |
2422 | oh->length = htons(p - sendbuf); | |
2423 | ||
2424 | if ((oi->state == OSPF6_INTERFACE_POINTTOPOINT) | |
2425 | || (oi->state == OSPF6_INTERFACE_DR) | |
2426 | || (oi->state == OSPF6_INTERFACE_BDR)) | |
2427 | ospf6_send(oi->linklocal_addr, &allspfrouters6, oi, oh); | |
2428 | else | |
2429 | ospf6_send(oi->linklocal_addr, &alldrouters6, oi, oh); | |
2430 | } | |
2431 | ||
2432 | if (oi->lsack_list->count > 0) | |
2433 | thread_add_event(master, ospf6_lsack_send_interface, oi, 0, | |
2434 | &oi->thread_send_lsack); | |
2435 | ||
2436 | return 0; | |
718e3744 | 2437 | } |
2438 | ||
6b0655a2 | 2439 | |
508e53e2 | 2440 | /* Commands */ |
2441 | DEFUN (debug_ospf6_message, | |
2442 | debug_ospf6_message_cmd, | |
1d68dbfe | 2443 | "debug ospf6 message <unknown|hello|dbdesc|lsreq|lsupdate|lsack|all> [<send|recv>]", |
508e53e2 | 2444 | DEBUG_STR |
2445 | OSPF6_STR | |
2446 | "Debug OSPFv3 message\n" | |
2447 | "Debug Unknown message\n" | |
2448 | "Debug Hello message\n" | |
2449 | "Debug Database Description message\n" | |
2450 | "Debug Link State Request message\n" | |
2451 | "Debug Link State Update message\n" | |
2452 | "Debug Link State Acknowledgement message\n" | |
2453 | "Debug All message\n" | |
1d68dbfe DW |
2454 | "Debug only sending message\n" |
2455 | "Debug only receiving message\n") | |
718e3744 | 2456 | { |
d62a17ae | 2457 | int idx_packet = 3; |
2458 | int idx_send_recv = 4; | |
2459 | unsigned char level = 0; | |
2460 | int type = 0; | |
2461 | int i; | |
2462 | ||
2463 | /* check type */ | |
2464 | if (!strncmp(argv[idx_packet]->arg, "u", 1)) | |
2465 | type = OSPF6_MESSAGE_TYPE_UNKNOWN; | |
2466 | else if (!strncmp(argv[idx_packet]->arg, "h", 1)) | |
2467 | type = OSPF6_MESSAGE_TYPE_HELLO; | |
2468 | else if (!strncmp(argv[idx_packet]->arg, "d", 1)) | |
2469 | type = OSPF6_MESSAGE_TYPE_DBDESC; | |
2470 | else if (!strncmp(argv[idx_packet]->arg, "lsr", 3)) | |
2471 | type = OSPF6_MESSAGE_TYPE_LSREQ; | |
2472 | else if (!strncmp(argv[idx_packet]->arg, "lsu", 3)) | |
2473 | type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2474 | else if (!strncmp(argv[idx_packet]->arg, "lsa", 3)) | |
2475 | type = OSPF6_MESSAGE_TYPE_LSACK; | |
2476 | else if (!strncmp(argv[idx_packet]->arg, "a", 1)) | |
2477 | type = OSPF6_MESSAGE_TYPE_ALL; | |
2478 | ||
2479 | if (argc == 4) | |
2480 | level = OSPF6_DEBUG_MESSAGE_SEND | OSPF6_DEBUG_MESSAGE_RECV; | |
2481 | else if (!strncmp(argv[idx_send_recv]->arg, "s", 1)) | |
2482 | level = OSPF6_DEBUG_MESSAGE_SEND; | |
2483 | else if (!strncmp(argv[idx_send_recv]->arg, "r", 1)) | |
2484 | level = OSPF6_DEBUG_MESSAGE_RECV; | |
2485 | ||
2486 | if (type == OSPF6_MESSAGE_TYPE_ALL) { | |
2487 | for (i = 0; i < 6; i++) | |
2488 | OSPF6_DEBUG_MESSAGE_ON(i, level); | |
2489 | } else | |
2490 | OSPF6_DEBUG_MESSAGE_ON(type, level); | |
2491 | ||
2492 | return CMD_SUCCESS; | |
718e3744 | 2493 | } |
2494 | ||
508e53e2 | 2495 | DEFUN (no_debug_ospf6_message, |
2496 | no_debug_ospf6_message_cmd, | |
1d68dbfe | 2497 | "no debug ospf6 message <unknown|hello|dbdesc|lsreq|lsupdate|lsack|all> [<send|recv>]", |
508e53e2 | 2498 | NO_STR |
2499 | DEBUG_STR | |
2500 | OSPF6_STR | |
2501 | "Debug OSPFv3 message\n" | |
2502 | "Debug Unknown message\n" | |
2503 | "Debug Hello message\n" | |
2504 | "Debug Database Description message\n" | |
2505 | "Debug Link State Request message\n" | |
2506 | "Debug Link State Update message\n" | |
2507 | "Debug Link State Acknowledgement message\n" | |
2508 | "Debug All message\n" | |
1d68dbfe DW |
2509 | "Debug only sending message\n" |
2510 | "Debug only receiving message\n") | |
508e53e2 | 2511 | { |
d62a17ae | 2512 | int idx_packet = 4; |
2513 | int idx_send_recv = 5; | |
2514 | unsigned char level = 0; | |
2515 | int type = 0; | |
2516 | int i; | |
2517 | ||
2518 | /* check type */ | |
2519 | if (!strncmp(argv[idx_packet]->arg, "u", 1)) | |
2520 | type = OSPF6_MESSAGE_TYPE_UNKNOWN; | |
2521 | else if (!strncmp(argv[idx_packet]->arg, "h", 1)) | |
2522 | type = OSPF6_MESSAGE_TYPE_HELLO; | |
2523 | else if (!strncmp(argv[idx_packet]->arg, "d", 1)) | |
2524 | type = OSPF6_MESSAGE_TYPE_DBDESC; | |
2525 | else if (!strncmp(argv[idx_packet]->arg, "lsr", 3)) | |
2526 | type = OSPF6_MESSAGE_TYPE_LSREQ; | |
2527 | else if (!strncmp(argv[idx_packet]->arg, "lsu", 3)) | |
2528 | type = OSPF6_MESSAGE_TYPE_LSUPDATE; | |
2529 | else if (!strncmp(argv[idx_packet]->arg, "lsa", 3)) | |
2530 | type = OSPF6_MESSAGE_TYPE_LSACK; | |
2531 | else if (!strncmp(argv[idx_packet]->arg, "a", 1)) | |
2532 | type = OSPF6_MESSAGE_TYPE_ALL; | |
2533 | ||
2534 | if (argc == 5) | |
2535 | level = OSPF6_DEBUG_MESSAGE_SEND | OSPF6_DEBUG_MESSAGE_RECV; | |
2536 | else if (!strncmp(argv[idx_send_recv]->arg, "s", 1)) | |
2537 | level = OSPF6_DEBUG_MESSAGE_SEND; | |
2538 | else if (!strncmp(argv[idx_send_recv]->arg, "r", 1)) | |
2539 | level = OSPF6_DEBUG_MESSAGE_RECV; | |
2540 | ||
2541 | if (type == OSPF6_MESSAGE_TYPE_ALL) { | |
2542 | for (i = 0; i < 6; i++) | |
2543 | OSPF6_DEBUG_MESSAGE_OFF(i, level); | |
2544 | } else | |
2545 | OSPF6_DEBUG_MESSAGE_OFF(type, level); | |
2546 | ||
2547 | return CMD_SUCCESS; | |
718e3744 | 2548 | } |
2549 | ||
508e53e2 | 2550 | |
d62a17ae | 2551 | int config_write_ospf6_debug_message(struct vty *vty) |
718e3744 | 2552 | { |
d62a17ae | 2553 | const char *type_str[] = {"unknown", "hello", "dbdesc", |
2554 | "lsreq", "lsupdate", "lsack"}; | |
2555 | unsigned char s = 0, r = 0; | |
2556 | int i; | |
2557 | ||
2558 | for (i = 0; i < 6; i++) { | |
2559 | if (IS_OSPF6_DEBUG_MESSAGE(i, SEND)) | |
2560 | s |= 1 << i; | |
2561 | if (IS_OSPF6_DEBUG_MESSAGE(i, RECV)) | |
2562 | r |= 1 << i; | |
2563 | } | |
2564 | ||
2565 | if (s == 0x3f && r == 0x3f) { | |
2566 | vty_out(vty, "debug ospf6 message all\n"); | |
2567 | return 0; | |
2568 | } | |
2569 | ||
2570 | if (s == 0x3f && r == 0) { | |
2571 | vty_out(vty, "debug ospf6 message all send\n"); | |
2572 | return 0; | |
2573 | } else if (s == 0 && r == 0x3f) { | |
2574 | vty_out(vty, "debug ospf6 message all recv\n"); | |
2575 | return 0; | |
2576 | } | |
2577 | ||
2578 | /* Unknown message is logged by default */ | |
2579 | if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, SEND) | |
2580 | && !IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
2581 | vty_out(vty, "no debug ospf6 message unknown\n"); | |
2582 | else if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, SEND)) | |
2583 | vty_out(vty, "no debug ospf6 message unknown send\n"); | |
2584 | else if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV)) | |
2585 | vty_out(vty, "no debug ospf6 message unknown recv\n"); | |
2586 | ||
2587 | for (i = 1; i < 6; i++) { | |
2588 | if (IS_OSPF6_DEBUG_MESSAGE(i, SEND) | |
2589 | && IS_OSPF6_DEBUG_MESSAGE(i, RECV)) | |
2590 | vty_out(vty, "debug ospf6 message %s\n", type_str[i]); | |
2591 | else if (IS_OSPF6_DEBUG_MESSAGE(i, SEND)) | |
2592 | vty_out(vty, "debug ospf6 message %s send\n", | |
2593 | type_str[i]); | |
2594 | else if (IS_OSPF6_DEBUG_MESSAGE(i, RECV)) | |
2595 | vty_out(vty, "debug ospf6 message %s recv\n", | |
2596 | type_str[i]); | |
2597 | } | |
2598 | ||
2599 | return 0; | |
718e3744 | 2600 | } |
2601 | ||
d62a17ae | 2602 | void install_element_ospf6_debug_message(void) |
508e53e2 | 2603 | { |
d62a17ae | 2604 | install_element(ENABLE_NODE, &debug_ospf6_message_cmd); |
2605 | install_element(ENABLE_NODE, &no_debug_ospf6_message_cmd); | |
2606 | install_element(CONFIG_NODE, &debug_ospf6_message_cmd); | |
2607 | install_element(CONFIG_NODE, &no_debug_ospf6_message_cmd); | |
508e53e2 | 2608 | } |