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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"
6cb85350 30#include "checksum.h"
508e53e2 31
508e53e2 32#include "ospf6_proto.h"
33#include "ospf6_lsa.h"
34#include "ospf6_lsdb.h"
c527acf1 35#include "ospf6_top.h"
508e53e2 36#include "ospf6_network.h"
37#include "ospf6_message.h"
718e3744 38
508e53e2 39#include "ospf6_area.h"
40#include "ospf6_neighbor.h"
41#include "ospf6_interface.h"
718e3744 42
abc7ef44
DO		 43/* for structures and macros ospf6_lsa_examin() needs */
44#include "ospf6_abr.h"
45#include "ospf6_asbr.h"
46#include "ospf6_intra.h"
47
508e53e2 48#include "ospf6_flood.h"
049207c3 49#include "ospf6d.h"
0d1753a7 50#include "ospf6_gr.h"
681b84e8 51#include <netinet/ip6.h>
6cb85350
AR		 52#include "lib/libospf.h"
53#include "lib/keychain.h"
54#include "ospf6_auth_trailer.h"
681b84e8 55
30043e4c 56DEFINE_MTYPE_STATIC(OSPF6D, OSPF6_MESSAGE, "OSPF6 message");
4f7bf1ab
PR		 57DEFINE_MTYPE_STATIC(OSPF6D, OSPF6_PACKET, "OSPF6 packet");
58DEFINE_MTYPE_STATIC(OSPF6D, OSPF6_FIFO, "OSPF6 FIFO queue");
30043e4c 59
508e53e2 60unsigned char conf_debug_ospf6_message[6] = {0x03, 0, 0, 0, 0, 0};
6cb85350
AR		 61
62const char *ospf6_message_type(int type)
63{
64 switch (type) {
65 case OSPF6_MESSAGE_TYPE_HELLO:
66 return "Hello";
67 case OSPF6_MESSAGE_TYPE_DBDESC:
68 return "DbDesc";
69 case OSPF6_MESSAGE_TYPE_LSREQ:
70 return "LSReq";
71 case OSPF6_MESSAGE_TYPE_LSUPDATE:
72 return "LSUpdate";
73 case OSPF6_MESSAGE_TYPE_LSACK:
74 return "LSAck";
75 case OSPF6_MESSAGE_TYPE_UNKNOWN:
76 default:
77 return "unknown";
78 }
79}
718e3744 80
abc7ef44
DO		 81/* Minimum (besides the standard OSPF packet header) lengths for OSPF
82 packets of particular types, offset is the "type" field. */
d7c0a89a 83const uint16_t ospf6_packet_minlen[OSPF6_MESSAGE_TYPE_ALL] = {
d62a17ae 84 0,
85 OSPF6_HELLO_MIN_SIZE,
86 OSPF6_DB_DESC_MIN_SIZE,
87 OSPF6_LS_REQ_MIN_SIZE,
88 OSPF6_LS_UPD_MIN_SIZE,
89 OSPF6_LS_ACK_MIN_SIZE};
abc7ef44
DO		 90
91/* Minimum (besides the standard LSA header) lengths for LSAs of particular
92 types, offset is the "LSA function code" portion of "LSA type" field. */
d7c0a89a 93const uint16_t ospf6_lsa_minlen[OSPF6_LSTYPE_SIZE] = {
d62a17ae 94 0,
95 /* 0x2001 */ OSPF6_ROUTER_LSA_MIN_SIZE,
96 /* 0x2002 */ OSPF6_NETWORK_LSA_MIN_SIZE,
97 /* 0x2003 */ OSPF6_INTER_PREFIX_LSA_MIN_SIZE,
98 /* 0x2004 */ OSPF6_INTER_ROUTER_LSA_FIX_SIZE,
99 /* 0x4005 */ OSPF6_AS_EXTERNAL_LSA_MIN_SIZE,
100 /* 0x2006 */ 0,
101 /* 0x2007 */ OSPF6_AS_EXTERNAL_LSA_MIN_SIZE,
102 /* 0x0008 */ OSPF6_LINK_LSA_MIN_SIZE,
0d1753a7 103 /* 0x2009 */ OSPF6_INTRA_PREFIX_LSA_MIN_SIZE,
104 /* 0x200a */ 0,
105 /* 0x000b */ OSPF6_GRACE_LSA_MIN_SIZE};
abc7ef44 106
508e53e2 107/* print functions */
718e3744 108
d62a17ae 109static void ospf6_header_print(struct ospf6_header *oh)
718e3744 110{
d47b448d
DS		 111 zlog_debug(" OSPFv%d Type:%d Len:%hu Router-ID:%pI4", oh->version,
112 oh->type, ntohs(oh->length), &oh->router_id);
113 zlog_debug(" Area-ID:%pI4 Cksum:%hx Instance-ID:%d", &oh->area_id,
d62a17ae 114 ntohs(oh->checksum), oh->instance_id);
718e3744 115}
116
f44d0f5e 117void ospf6_hello_print(struct ospf6_header *oh, int action)
718e3744 118{
d62a17ae 119 struct ospf6_hello *hello;
6cb85350 120 char options[32];
d62a17ae 121 char *p;
122
123 ospf6_header_print(oh);
124 assert(oh->type == OSPF6_MESSAGE_TYPE_HELLO);
125
126 hello = (struct ospf6_hello *)((caddr_t)oh
127 + sizeof(struct ospf6_header));
128
d62a17ae 129 ospf6_options_printbuf(hello->options, options, sizeof(options));
130
131 zlog_debug(" I/F-Id:%ld Priority:%d Option:%s",
d7c0a89a 132 (unsigned long)ntohl(hello->interface_id), hello->priority,
d62a17ae 133 options);
134 zlog_debug(" HelloInterval:%hu DeadInterval:%hu",
135 ntohs(hello->hello_interval), ntohs(hello->dead_interval));
d47b448d 136 zlog_debug(" DR:%pI4 BDR:%pI4", &hello->drouter, &hello->bdrouter);
d62a17ae 137
f44d0f5e 138 if ((IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)
139 && action == OSPF6_ACTION_RECV)
140 || (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND)
141 && action == OSPF6_ACTION_SEND)) {
d62a17ae 142
f44d0f5e 143 for (p = (char *)((caddr_t)hello + sizeof(struct ospf6_hello));
144 p + sizeof(uint32_t) <= OSPF6_MESSAGE_END(oh);
145 p += sizeof(uint32_t))
146 zlog_debug(" Neighbor: %pI4", (in_addr_t *)p);
147
148 assert(p == OSPF6_MESSAGE_END(oh));
149 }
718e3744 150}
151
f44d0f5e 152void ospf6_dbdesc_print(struct ospf6_header *oh, int action)
718e3744 153{
d62a17ae 154 struct ospf6_dbdesc *dbdesc;
6cb85350 155 char options[32];
d62a17ae 156 char *p;
508e53e2 157
d62a17ae 158 ospf6_header_print(oh);
159 assert(oh->type == OSPF6_MESSAGE_TYPE_DBDESC);
508e53e2 160
d62a17ae 161 dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh
162 + sizeof(struct ospf6_header));
508e53e2 163
d62a17ae 164 ospf6_options_printbuf(dbdesc->options, options, sizeof(options));
508e53e2 165
d62a17ae 166 zlog_debug(" MBZ: %#x Option: %s IfMTU: %hu", dbdesc->reserved1,
167 options, ntohs(dbdesc->ifmtu));
168 zlog_debug(" MBZ: %#x Bits: %s%s%s SeqNum: %#lx", dbdesc->reserved2,
169 (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT) ? "I" : "-"),
170 (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MBIT) ? "M" : "-"),
171 (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT) ? "m" : "s"),
d7c0a89a 172 (unsigned long)ntohl(dbdesc->seqnum));
508e53e2 173
f44d0f5e 174 if ((IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)
175 && action == OSPF6_ACTION_RECV)
176 || (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND)
177 && action == OSPF6_ACTION_SEND)) {
508e53e2 178
f44d0f5e 179 for (p = (char *)((caddr_t)dbdesc
180 + sizeof(struct ospf6_dbdesc));
181 p + sizeof(struct ospf6_lsa_header)
182 <= OSPF6_MESSAGE_END(oh);
183 p += sizeof(struct ospf6_lsa_header))
184 ospf6_lsa_header_print_raw(
185 (struct ospf6_lsa_header *)p);
186
187 assert(p == OSPF6_MESSAGE_END(oh));
188 }
718e3744 189}
190
f44d0f5e 191void ospf6_lsreq_print(struct ospf6_header *oh, int action)
718e3744 192{
d62a17ae 193 char *p;
194
195 ospf6_header_print(oh);
196 assert(oh->type == OSPF6_MESSAGE_TYPE_LSREQ);
197
f44d0f5e 198 if ((IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)
199 && action == OSPF6_ACTION_RECV)
200 || (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND)
201 && action == OSPF6_ACTION_SEND)) {
202
203 for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header));
204 p + sizeof(struct ospf6_lsreq_entry)
205 <= OSPF6_MESSAGE_END(oh);
206 p += sizeof(struct ospf6_lsreq_entry)) {
207 struct ospf6_lsreq_entry *e =
208 (struct ospf6_lsreq_entry *)p;
209
210 zlog_debug(" [%s Id:%pI4 Adv:%pI4]",
211 ospf6_lstype_name(e->type), &e->id,
212 &e->adv_router);
213 }
d47b448d 214
f44d0f5e 215 assert(p == OSPF6_MESSAGE_END(oh));
d62a17ae 216 }
718e3744 217}
218
f44d0f5e 219void ospf6_lsupdate_print(struct ospf6_header *oh, int action)
718e3744 220{
d62a17ae 221 struct ospf6_lsupdate *lsupdate;
d7c0a89a 222 unsigned long num;
d62a17ae 223 char *p;
718e3744 224
d62a17ae 225 ospf6_header_print(oh);
226 assert(oh->type == OSPF6_MESSAGE_TYPE_LSUPDATE);
718e3744 227
d62a17ae 228 lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh
229 + sizeof(struct ospf6_header));
718e3744 230
d62a17ae 231 num = ntohl(lsupdate->lsa_number);
232 zlog_debug(" Number of LSA: %ld", num);
718e3744 233
f44d0f5e 234 if ((IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)
235 && action == OSPF6_ACTION_RECV)
236 || (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND)
237 && action == OSPF6_ACTION_SEND)) {
238
239 for (p = (char *)((caddr_t)lsupdate
240 + sizeof(struct ospf6_lsupdate));
241 p < OSPF6_MESSAGE_END(oh)
242 && p + OSPF6_LSA_SIZE(p) <= OSPF6_MESSAGE_END(oh);
243 p += OSPF6_LSA_SIZE(p)) {
244 ospf6_lsa_header_print_raw(
245 (struct ospf6_lsa_header *)p);
246 }
718e3744 247
f44d0f5e 248 assert(p == OSPF6_MESSAGE_END(oh));
249 }
718e3744 250}
251
f44d0f5e 252void ospf6_lsack_print(struct ospf6_header *oh, int action)
718e3744 253{
d62a17ae 254 char *p;
718e3744 255
d62a17ae 256 ospf6_header_print(oh);
257 assert(oh->type == OSPF6_MESSAGE_TYPE_LSACK);
718e3744 258
f44d0f5e 259 if ((IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV)
260 && action == OSPF6_ACTION_RECV)
261 || (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND)
262 && action == OSPF6_ACTION_SEND)) {
508e53e2 263
f44d0f5e 264 for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header));
265 p + sizeof(struct ospf6_lsa_header)
266 <= OSPF6_MESSAGE_END(oh);
267 p += sizeof(struct ospf6_lsa_header))
268 ospf6_lsa_header_print_raw(
269 (struct ospf6_lsa_header *)p);
270
271 assert(p == OSPF6_MESSAGE_END(oh));
272 }
718e3744 273}
274
3d968031
PR		 275static struct ospf6_packet *ospf6_packet_new(size_t size)
276{
277 struct ospf6_packet *new;
278
279 new = XCALLOC(MTYPE_OSPF6_PACKET, sizeof(struct ospf6_packet));
280 new->s = stream_new(size);
281
282 return new;
283}
284
d6a39b53 285static void ospf6_packet_free(struct ospf6_packet *op)
4f7bf1ab
PR		 286{
287 if (op->s)
288 stream_free(op->s);
289
290 XFREE(MTYPE_OSPF6_PACKET, op);
291}
292
293struct ospf6_fifo *ospf6_fifo_new(void)
294{
295 struct ospf6_fifo *new;
296
297 new = XCALLOC(MTYPE_OSPF6_FIFO, sizeof(struct ospf6_fifo));
298 return new;
299}
300
301/* Add new packet to fifo. */
531f925b 302static void ospf6_fifo_push(struct ospf6_fifo *fifo, struct ospf6_packet *op)
4f7bf1ab
PR		 303{
304 if (fifo->tail)
305 fifo->tail->next = op;
306 else
307 fifo->head = op;
308
309 fifo->tail = op;
310
311 fifo->count++;
312}
313
314/* Add new packet to head of fifo. */
531f925b
PR		 315static void ospf6_fifo_push_head(struct ospf6_fifo *fifo,
316 struct ospf6_packet *op)
4f7bf1ab
PR		 317{
318 op->next = fifo->head;
319
320 if (fifo->tail == NULL)
321 fifo->tail = op;
322
323 fifo->head = op;
324
325 fifo->count++;
326}
327
328/* Delete first packet from fifo. */
531f925b 329static struct ospf6_packet *ospf6_fifo_pop(struct ospf6_fifo *fifo)
4f7bf1ab
PR		 330{
331 struct ospf6_packet *op;
332
333 op = fifo->head;
334
335 if (op) {
336 fifo->head = op->next;
337
338 if (fifo->head == NULL)
339 fifo->tail = NULL;
340
341 fifo->count--;
342 }
343
344 return op;
345}
346
347/* Return first fifo entry. */
d6a39b53 348static struct ospf6_packet *ospf6_fifo_head(struct ospf6_fifo *fifo)
4f7bf1ab
PR		 349{
350 return fifo->head;
351}
352
353/* Flush ospf packet fifo. */
354void ospf6_fifo_flush(struct ospf6_fifo *fifo)
355{
356 struct ospf6_packet *op;
357 struct ospf6_packet *next;
358
359 for (op = fifo->head; op; op = next) {
360 next = op->next;
361 ospf6_packet_free(op);
362 }
363 fifo->head = fifo->tail = NULL;
364 fifo->count = 0;
365}
366
367/* Free ospf packet fifo. */
368void ospf6_fifo_free(struct ospf6_fifo *fifo)
369{
370 ospf6_fifo_flush(fifo);
371
372 XFREE(MTYPE_OSPF6_FIFO, fifo);
373}
374
d6a39b53
PR		 375static void ospf6_packet_add(struct ospf6_interface *oi,
376 struct ospf6_packet *op)
531f925b
PR		 377{
378 /* Add packet to end of queue. */
379 ospf6_fifo_push(oi->obuf, op);
380
381 /* Debug of packet fifo*/
382 /* ospf_fifo_debug (oi->obuf); */
383}
384
3d968031
PR		 385static void ospf6_packet_add_top(struct ospf6_interface *oi,
386 struct ospf6_packet *op)
531f925b
PR		 387{
388 /* Add packet to head of queue. */
389 ospf6_fifo_push_head(oi->obuf, op);
390
391 /* Debug of packet fifo*/
392 /* ospf_fifo_debug (oi->obuf); */
393}
394
3d968031 395static void ospf6_packet_delete(struct ospf6_interface *oi)
531f925b
PR		 396{
397 struct ospf6_packet *op;
398
399 op = ospf6_fifo_pop(oi->obuf);
400
401 if (op)
402 ospf6_packet_free(op);
403}
404
405
d62a17ae 406static void ospf6_hello_recv(struct in6_addr *src, struct in6_addr *dst,
407 struct ospf6_interface *oi,
408 struct ospf6_header *oh)
718e3744 409{
d62a17ae 410 struct ospf6_hello *hello;
411 struct ospf6_neighbor *on;
412 char *p;
413 int twoway = 0;
414 int neighborchange = 0;
415 int neighbor_ifindex_change = 0;
416 int backupseen = 0;
bb382e24
PR		 417 int64_t latency = 0;
418 struct timeval timestamp;
d62a17ae 419
bb382e24 420 monotime(&timestamp);
d62a17ae 421 hello = (struct ospf6_hello *)((caddr_t)oh
422 + sizeof(struct ospf6_header));
423
424 /* HelloInterval check */
425 if (ntohs(hello->hello_interval) != oi->hello_interval) {
ff99e5b6 426 zlog_warn(
427 "VRF %s: I/F %s HelloInterval mismatch: (my %d, rcvd %d)",
096f7609
IR		 428 oi->interface->vrf->name, oi->interface->name,
429 oi->hello_interval, ntohs(hello->hello_interval));
d62a17ae 430 return;
431 }
432
433 /* RouterDeadInterval check */
434 if (ntohs(hello->dead_interval) != oi->dead_interval) {
ff99e5b6 435 zlog_warn(
436 "VRF %s: I/F %s DeadInterval mismatch: (my %d, rcvd %d)",
096f7609
IR		 437 oi->interface->vrf->name, oi->interface->name,
438 oi->dead_interval, ntohs(hello->dead_interval));
d62a17ae 439 return;
440 }
441
442 /* E-bit check */
443 if (OSPF6_OPT_ISSET(hello->options, OSPF6_OPT_E)
444 != OSPF6_OPT_ISSET(oi->area->options, OSPF6_OPT_E)) {
ff99e5b6 445 zlog_warn("VRF %s: IF %s E-bit mismatch",
096f7609 446 oi->interface->vrf->name, oi->interface->name);
d62a17ae 447 return;
448 }
449
a581473f 450 /* N-bit check */
451 if (OSPF6_OPT_ISSET(hello->options, OSPF6_OPT_N)
452 != OSPF6_OPT_ISSET(oi->area->options, OSPF6_OPT_N)) {
453 zlog_warn("VRF %s: IF %s N-bit mismatch",
454 oi->interface->vrf->name, oi->interface->name);
455 return;
456 }
457
6cb85350
AR		 458 if (((OSPF6_OPT_ISSET_EXT(hello->options, OSPF6_OPT_AT) ==
459 OSPF6_OPT_AT) &&
460 (oi->at_data.flags == 0)) ||
461 ((OSPF6_OPT_ISSET_EXT(hello->options, OSPF6_OPT_AT) !=
462 OSPF6_OPT_AT) &&
463 (oi->at_data.flags != 0))) {
464 if (IS_OSPF6_DEBUG_AUTH_RX)
465 zlog_warn(
466 "VRF %s: IF %s AT-bit mismatch in hello packet",
467 oi->interface->vrf->name, oi->interface->name);
468 oi->at_data.rx_drop++;
469 return;
470 }
471
d62a17ae 472 /* Find neighbor, create if not exist */
473 on = ospf6_neighbor_lookup(oh->router_id, oi);
474 if (on == NULL) {
475 on = ospf6_neighbor_create(oh->router_id, oi);
476 on->prev_drouter = on->drouter = hello->drouter;
477 on->prev_bdrouter = on->bdrouter = hello->bdrouter;
478 on->priority = hello->priority;
479 }
480
bb382e24
PR		 481 /* check latency against hello period */
482 if (on->hello_in)
483 latency = monotime_since(&on->last_hello, NULL)
0dd5ec12 484 - ((int64_t)oi->hello_interval * 1000000);
bb382e24 485 /* log if latency exceeds the hello period */
0dd5ec12 486 if (latency > ((int64_t)oi->hello_interval * 1000000))
bb382e24
PR		 487 zlog_warn("%s RX %pI4 high latency %" PRId64 "us.", __func__,
488 &on->router_id, latency);
489 on->last_hello = timestamp;
490 on->hello_in++;
491
d62a17ae 492 /* Always override neighbor's source address */
493 memcpy(&on->linklocal_addr, src, sizeof(struct in6_addr));
494
495 /* Neighbor ifindex check */
496 if (on->ifindex != (ifindex_t)ntohl(hello->interface_id)) {
497 on->ifindex = ntohl(hello->interface_id);
498 neighbor_ifindex_change++;
499 }
500
501 /* TwoWay check */
502 for (p = (char *)((caddr_t)hello + sizeof(struct ospf6_hello));
d7c0a89a
QY		 503 p + sizeof(uint32_t) <= OSPF6_MESSAGE_END(oh);
504 p += sizeof(uint32_t)) {
505 uint32_t *router_id = (uint32_t *)p;
d62a17ae 506
507 if (*router_id == oi->area->ospf6->router_id)
508 twoway++;
509 }
510
511 assert(p == OSPF6_MESSAGE_END(oh));
512
513 /* RouterPriority check */
514 if (on->priority != hello->priority) {
515 on->priority = hello->priority;
516 neighborchange++;
517 }
518
519 /* DR check */
520 if (on->drouter != hello->drouter) {
521 on->prev_drouter = on->drouter;
522 on->drouter = hello->drouter;
523 if (on->prev_drouter == on->router_id
524 || on->drouter == on->router_id)
525 neighborchange++;
526 }
527
528 /* BDR check */
529 if (on->bdrouter != hello->bdrouter) {
530 on->prev_bdrouter = on->bdrouter;
531 on->bdrouter = hello->bdrouter;
532 if (on->prev_bdrouter == on->router_id
533 || on->bdrouter == on->router_id)
534 neighborchange++;
535 }
536
537 /* BackupSeen check */
538 if (oi->state == OSPF6_INTERFACE_WAITING) {
539 if (hello->bdrouter == on->router_id)
540 backupseen++;
541 else if (hello->drouter == on->router_id
542 && hello->bdrouter == htonl(0))
543 backupseen++;
544 }
545
43855e3d
CS		 546 oi->hello_in++;
547
d62a17ae 548 /* Execute neighbor events */
549 thread_execute(master, hello_received, on, 0);
550 if (twoway)
551 thread_execute(master, twoway_received, on, 0);
0d1753a7 552 else {
950b49f8
RW		 553 if (OSPF6_GR_IS_ACTIVE_HELPER(on)) {
554 if (IS_DEBUG_OSPF6_GR)
555 zlog_debug(
556 "%s, Received oneway hello from RESTARTER so ignore here.",
557 __PRETTY_FUNCTION__);
558 } else {
0d1753a7 559 /* If the router is DR_OTHER, RESTARTER will not wait
560 * until it receives the hello from it if it receives
561 * from DR and BDR.
562 * So, helper might receives ONE_WAY hello from
563 * RESTARTER. So not allowing to change the state if it
564 * receives one_way hellow when it acts as HELPER for
565 * that specific neighbor.
566 */
567 thread_execute(master, oneway_received, on, 0);
568 }
569 }
570
571 if (OSPF6_GR_IS_ACTIVE_HELPER(on)) {
572 /* As per the GR Conformance Test Case 7.2. Section 3
573 * "Also, if X was the Designated Router on network segment S
574 * when the helping relationship began, Y maintains X as the
575 * Designated Router until the helping relationship is
576 * terminated."
577 * When it is a helper for this neighbor, It should not trigger
578 * the ISM Events. Also Intentionally not setting the priority
579 * and other fields so that when the neighbor exits the Grace
580 * period, it can handle if there is any change before GR and
581 * after GR.
582 */
0fc3e113 583 if (IS_DEBUG_OSPF6_GR)
0d1753a7 584 zlog_debug(
585 "%s, Neighbor is under GR Restart, hence ignoring the ISM Events",
586 __PRETTY_FUNCTION__);
587
588 return;
589 }
d62a17ae 590
71165098
RW		 591 /*
592 * RFC 3623 - Section 2:
593 * "If the restarting router determines that it was the Designated
594 * Router on a given segment prior to the restart, it elects
595 * itself as the Designated Router again. The restarting router
596 * knows that it was the Designated Router if, while the
597 * associated interface is in Waiting state, a Hello packet is
598 * received from a neighbor listing the router as the Designated
599 * Router".
600 */
601 if (oi->area->ospf6->gr_info.restart_in_progress
602 && oi->state == OSPF6_INTERFACE_WAITING
603 && hello->drouter == oi->area->ospf6->router_id)
604 oi->drouter = hello->drouter;
605
d62a17ae 606 /* Schedule interface events */
607 if (backupseen)
608 thread_add_event(master, backup_seen, oi, 0, NULL);
609 if (neighborchange)
610 thread_add_event(master, neighbor_change, oi, 0, NULL);
611
612 if (neighbor_ifindex_change && on->state == OSPF6_NEIGHBOR_FULL)
613 OSPF6_ROUTER_LSA_SCHEDULE(oi->area);
718e3744 614}
615
d62a17ae 616static void ospf6_dbdesc_recv_master(struct ospf6_header *oh,
617 struct ospf6_neighbor *on)
718e3744 618{
d62a17ae 619 struct ospf6_dbdesc *dbdesc;
620 char *p;
621
622 dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh
623 + sizeof(struct ospf6_header));
624
625 if (on->state < OSPF6_NEIGHBOR_INIT) {
f44d0f5e 626 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 627 zlog_debug("Neighbor state less than Init, ignore");
628 return;
629 }
630
631 switch (on->state) {
632 case OSPF6_NEIGHBOR_TWOWAY:
f44d0f5e 633 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 634 zlog_debug("Neighbor state is 2-Way, ignore");
635 return;
636
637 case OSPF6_NEIGHBOR_INIT:
638 thread_execute(master, twoway_received, on, 0);
639 if (on->state != OSPF6_NEIGHBOR_EXSTART) {
f44d0f5e 640 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 641 zlog_debug(
642 "Neighbor state is not ExStart, ignore");
643 return;
644 }
645 /* else fall through to ExStart */
646 /* fallthru */
647 case OSPF6_NEIGHBOR_EXSTART:
648 /* if neighbor obeys us as our slave, schedule negotiation_done
649 and process LSA Headers. Otherwise, ignore this message */
650 if (!CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT)
651 && !CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT)
652 && ntohl(dbdesc->seqnum) == on->dbdesc_seqnum) {
653 /* execute NegotiationDone */
654 thread_execute(master, negotiation_done, on, 0);
655
656 /* Record neighbor options */
657 memcpy(on->options, dbdesc->options,
658 sizeof(on->options));
659 } else {
096f7609
IR		 660 zlog_warn("VRF %s: Nbr %s: Negotiation failed",
661 on->ospf6_if->interface->vrf->name, on->name);
d62a17ae 662 return;
663 }
664 /* fall through to exchange */
665
666 case OSPF6_NEIGHBOR_EXCHANGE:
667 if (!memcmp(dbdesc, &on->dbdesc_last,
668 sizeof(struct ospf6_dbdesc))) {
669 /* Duplicated DatabaseDescription is dropped by master
670 */
f44d0f5e 671 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 672 zlog_debug(
673 "Duplicated dbdesc discarded by Master, ignore");
674 return;
675 }
676
677 if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT)) {
1b1f7b4f 678 zlog_warn(
679 "DbDesc recv: Master/Slave bit mismatch Nbr %s",
680 on->name);
d62a17ae 681 thread_add_event(master, seqnumber_mismatch, on, 0,
682 NULL);
683 return;
684 }
685
686 if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT)) {
1b1f7b4f 687 zlog_warn("DbDesc recv: Initialize bit mismatch Nbr %s",
688 on->name);
d62a17ae 689 thread_add_event(master, seqnumber_mismatch, on, 0,
690 NULL);
691 return;
692 }
693
694 if (memcmp(on->options, dbdesc->options, sizeof(on->options))) {
1b1f7b4f 695 zlog_warn("DbDesc recv: Option field mismatch Nbr %s",
696 on->name);
d62a17ae 697 thread_add_event(master, seqnumber_mismatch, on, 0,
698 NULL);
699 return;
700 }
701
702 if (ntohl(dbdesc->seqnum) != on->dbdesc_seqnum) {
1b1f7b4f 703 zlog_warn(
704 "DbDesc recv: Sequence number mismatch Nbr %s (%#lx expected)",
705 on->name, (unsigned long)on->dbdesc_seqnum);
d62a17ae 706 thread_add_event(master, seqnumber_mismatch, on, 0,
707 NULL);
708 return;
709 }
710 break;
711
712 case OSPF6_NEIGHBOR_LOADING:
713 case OSPF6_NEIGHBOR_FULL:
714 if (!memcmp(dbdesc, &on->dbdesc_last,
715 sizeof(struct ospf6_dbdesc))) {
716 /* Duplicated DatabaseDescription is dropped by master
717 */
f44d0f5e 718 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 719 zlog_debug(
720 "Duplicated dbdesc discarded by Master, ignore");
721 return;
722 }
723
1b1f7b4f 724 zlog_warn(
725 "DbDesc recv: Not duplicate dbdesc in state %s Nbr %s",
726 ospf6_neighbor_state_str[on->state], on->name);
d62a17ae 727 thread_add_event(master, seqnumber_mismatch, on, 0, NULL);
728 return;
729
730 default:
731 assert(0);
732 break;
733 }
734
735 /* Process LSA headers */
736 for (p = (char *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc));
737 p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh);
738 p += sizeof(struct ospf6_lsa_header)) {
739 struct ospf6_lsa *his, *mine;
740 struct ospf6_lsdb *lsdb = NULL;
741
742 his = ospf6_lsa_create_headeronly((struct ospf6_lsa_header *)p);
743
744 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
745 zlog_debug("%s", his->name);
746
747 switch (OSPF6_LSA_SCOPE(his->header->type)) {
748 case OSPF6_SCOPE_LINKLOCAL:
749 lsdb = on->ospf6_if->lsdb;
750 break;
751 case OSPF6_SCOPE_AREA:
752 lsdb = on->ospf6_if->area->lsdb;
753 break;
754 case OSPF6_SCOPE_AS:
755 lsdb = on->ospf6_if->area->ospf6->lsdb;
756 break;
757 case OSPF6_SCOPE_RESERVED:
758 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
759 zlog_debug("Ignoring LSA of reserved scope");
760 ospf6_lsa_delete(his);
761 continue;
d62a17ae 762 }
763
764 if (ntohs(his->header->type) == OSPF6_LSTYPE_AS_EXTERNAL
4f785c07
RZ		 765 && (IS_AREA_STUB(on->ospf6_if->area)
766 || IS_AREA_NSSA(on->ospf6_if->area))) {
d62a17ae 767 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
768 zlog_debug(
769 "SeqNumMismatch (E-bit mismatch), discard");
770 ospf6_lsa_delete(his);
771 thread_add_event(master, seqnumber_mismatch, on, 0,
772 NULL);
773 return;
774 }
775
776 mine = ospf6_lsdb_lookup(his->header->type, his->header->id,
777 his->header->adv_router, lsdb);
778 if (mine == NULL) {
779 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
780 zlog_debug("Add request (No database copy)");
781 ospf6_lsdb_add(ospf6_lsa_copy(his), on->request_list);
782 } else if (ospf6_lsa_compare(his, mine) < 0) {
783 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
784 zlog_debug("Add request (Received MoreRecent)");
785 ospf6_lsdb_add(ospf6_lsa_copy(his), on->request_list);
786 } else {
787 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
788 zlog_debug("Discard (Existing MoreRecent)");
789 }
790 ospf6_lsa_delete(his);
791 }
792
793 assert(p == OSPF6_MESSAGE_END(oh));
794
795 /* Increment sequence number */
796 on->dbdesc_seqnum++;
797
798 /* schedule send lsreq */
799 if (on->request_list->count)
800 thread_add_event(master, ospf6_lsreq_send, on, 0,
801 &on->thread_send_lsreq);
802
803 THREAD_OFF(on->thread_send_dbdesc);
804
805 /* More bit check */
806 if (!CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MBIT)
807 && !CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT))
9318fc6a
DS		 808 thread_add_event(master, exchange_done, on, 0,
809 &on->thread_exchange_done);
d62a17ae 810 else {
d62a17ae 811 thread_add_event(master, ospf6_dbdesc_send_newone, on, 0,
812 &on->thread_send_dbdesc);
813 }
814
815 /* save last received dbdesc */
816 memcpy(&on->dbdesc_last, dbdesc, sizeof(struct ospf6_dbdesc));
718e3744 817}
818
d62a17ae 819static void ospf6_dbdesc_recv_slave(struct ospf6_header *oh,
820 struct ospf6_neighbor *on)
718e3744 821{
d62a17ae 822 struct ospf6_dbdesc *dbdesc;
823 char *p;
824
825 dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh
826 + sizeof(struct ospf6_header));
827
828 if (on->state < OSPF6_NEIGHBOR_INIT) {
f44d0f5e 829 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 830 zlog_debug("Neighbor state less than Init, ignore");
831 return;
832 }
833
834 switch (on->state) {
835 case OSPF6_NEIGHBOR_TWOWAY:
f44d0f5e 836 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 837 zlog_debug("Neighbor state is 2-Way, ignore");
838 return;
839
840 case OSPF6_NEIGHBOR_INIT:
841 thread_execute(master, twoway_received, on, 0);
842 if (on->state != OSPF6_NEIGHBOR_EXSTART) {
f44d0f5e 843 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 844 zlog_debug(
845 "Neighbor state is not ExStart, ignore");
846 return;
847 }
848 /* else fall through to ExStart */
849 /* fallthru */
850 case OSPF6_NEIGHBOR_EXSTART:
851 /* If the neighbor is Master, act as Slave. Schedule
852 negotiation_done
853 and process LSA Headers. Otherwise, ignore this message */
854 if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT)
855 && CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MBIT)
856 && CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT)
857 && ntohs(oh->length)
858 == sizeof(struct ospf6_header)
859 + sizeof(struct ospf6_dbdesc)) {
860 /* set the master/slave bit to slave */
861 UNSET_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT);
862
863 /* set the DD sequence number to one specified by master
864 */
865 on->dbdesc_seqnum = ntohl(dbdesc->seqnum);
866
867 /* schedule NegotiationDone */
868 thread_execute(master, negotiation_done, on, 0);
869
870 /* Record neighbor options */
871 memcpy(on->options, dbdesc->options,
872 sizeof(on->options));
873 } else {
096f7609
IR		 874 zlog_warn("VRF %s: Nbr %s Negotiation failed",
875 on->ospf6_if->interface->vrf->name, on->name);
d62a17ae 876 return;
877 }
878 break;
879
880 case OSPF6_NEIGHBOR_EXCHANGE:
881 if (!memcmp(dbdesc, &on->dbdesc_last,
882 sizeof(struct ospf6_dbdesc))) {
883 /* Duplicated DatabaseDescription causes slave to
884 * retransmit */
f44d0f5e 885 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 886 zlog_debug(
887 "Duplicated dbdesc causes retransmit");
888 THREAD_OFF(on->thread_send_dbdesc);
d62a17ae 889 thread_add_event(master, ospf6_dbdesc_send, on, 0,
890 &on->thread_send_dbdesc);
891 return;
892 }
893
894 if (!CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_MSBIT)) {
1b1f7b4f 895 zlog_warn(
896 "DbDesc slave recv: Master/Slave bit mismatch Nbr %s",
897 on->name);
d62a17ae 898 thread_add_event(master, seqnumber_mismatch, on, 0,
899 NULL);
900 return;
901 }
902
903 if (CHECK_FLAG(dbdesc->bits, OSPF6_DBDESC_IBIT)) {
1b1f7b4f 904 zlog_warn(
905 "DbDesc slave recv: Initialize bit mismatch Nbr %s",
906 on->name);
d62a17ae 907 thread_add_event(master, seqnumber_mismatch, on, 0,
908 NULL);
909 return;
910 }
911
912 if (memcmp(on->options, dbdesc->options, sizeof(on->options))) {
1b1f7b4f 913 zlog_warn(
914 "DbDesc slave recv: Option field mismatch Nbr %s",
915 on->name);
d62a17ae 916 thread_add_event(master, seqnumber_mismatch, on, 0,
917 NULL);
918 return;
919 }
920
921 if (ntohl(dbdesc->seqnum) != on->dbdesc_seqnum + 1) {
1b1f7b4f 922 zlog_warn(
923 "DbDesc slave recv: Sequence number mismatch Nbr %s (%#lx expected)",
924 on->name, (unsigned long)on->dbdesc_seqnum + 1);
d62a17ae 925 thread_add_event(master, seqnumber_mismatch, on, 0,
926 NULL);
927 return;
928 }
929 break;
930
931 case OSPF6_NEIGHBOR_LOADING:
932 case OSPF6_NEIGHBOR_FULL:
933 if (!memcmp(dbdesc, &on->dbdesc_last,
934 sizeof(struct ospf6_dbdesc))) {
935 /* Duplicated DatabaseDescription causes slave to
936 * retransmit */
f44d0f5e 937 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 938 zlog_debug(
939 "Duplicated dbdesc causes retransmit");
940 THREAD_OFF(on->thread_send_dbdesc);
941 thread_add_event(master, ospf6_dbdesc_send, on, 0,
942 &on->thread_send_dbdesc);
943 return;
944 }
945
1b1f7b4f 946 zlog_warn(
947 "DbDesc slave recv: Not duplicate dbdesc in state %s Nbr %s",
948 ospf6_neighbor_state_str[on->state], on->name);
d62a17ae 949 thread_add_event(master, seqnumber_mismatch, on, 0, NULL);
950 return;
951
952 default:
953 assert(0);
954 break;
955 }
956
957 /* Process LSA headers */
958 for (p = (char *)((caddr_t)dbdesc + sizeof(struct ospf6_dbdesc));
959 p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh);
960 p += sizeof(struct ospf6_lsa_header)) {
961 struct ospf6_lsa *his, *mine;
962 struct ospf6_lsdb *lsdb = NULL;
963
964 his = ospf6_lsa_create_headeronly((struct ospf6_lsa_header *)p);
965
966 switch (OSPF6_LSA_SCOPE(his->header->type)) {
967 case OSPF6_SCOPE_LINKLOCAL:
968 lsdb = on->ospf6_if->lsdb;
969 break;
970 case OSPF6_SCOPE_AREA:
971 lsdb = on->ospf6_if->area->lsdb;
972 break;
973 case OSPF6_SCOPE_AS:
974 lsdb = on->ospf6_if->area->ospf6->lsdb;
975 break;
976 case OSPF6_SCOPE_RESERVED:
977 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
978 zlog_debug("Ignoring LSA of reserved scope");
979 ospf6_lsa_delete(his);
980 continue;
d62a17ae 981 }
982
983 if (OSPF6_LSA_SCOPE(his->header->type) == OSPF6_SCOPE_AS
4f785c07
RZ		 984 && (IS_AREA_STUB(on->ospf6_if->area)
985 || IS_AREA_NSSA(on->ospf6_if->area))) {
d62a17ae 986 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
987 zlog_debug("E-bit mismatch with LSA Headers");
988 ospf6_lsa_delete(his);
989 thread_add_event(master, seqnumber_mismatch, on, 0,
990 NULL);
991 return;
992 }
993
994 mine = ospf6_lsdb_lookup(his->header->type, his->header->id,
995 his->header->adv_router, lsdb);
996 if (mine == NULL || ospf6_lsa_compare(his, mine) < 0) {
997 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
998 zlog_debug("Add request-list: %s", his->name);
999 ospf6_lsdb_add(ospf6_lsa_copy(his), on->request_list);
1000 }
1001 ospf6_lsa_delete(his);
1002 }
1003
1004 assert(p == OSPF6_MESSAGE_END(oh));
1005
1006 /* Set sequence number to Master's */
1007 on->dbdesc_seqnum = ntohl(dbdesc->seqnum);
1008
1009 /* schedule send lsreq */
1010 if (on->request_list->count)
1011 thread_add_event(master, ospf6_lsreq_send, on, 0,
1012 &on->thread_send_lsreq);
1013
1014 THREAD_OFF(on->thread_send_dbdesc);
1015 thread_add_event(master, ospf6_dbdesc_send_newone, on, 0,
1016 &on->thread_send_dbdesc);
1017
1018 /* save last received dbdesc */
1019 memcpy(&on->dbdesc_last, dbdesc, sizeof(struct ospf6_dbdesc));
718e3744 1020}
1021
d62a17ae 1022static void ospf6_dbdesc_recv(struct in6_addr *src, struct in6_addr *dst,
1023 struct ospf6_interface *oi,
1024 struct ospf6_header *oh)
718e3744 1025{
d62a17ae 1026 struct ospf6_neighbor *on;
1027 struct ospf6_dbdesc *dbdesc;
1028
1029 on = ospf6_neighbor_lookup(oh->router_id, oi);
1030 if (on == NULL) {
f44d0f5e 1031 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 1032 zlog_debug("Neighbor not found, ignore");
1033 return;
1034 }
1035
1036 dbdesc = (struct ospf6_dbdesc *)((caddr_t)oh
1037 + sizeof(struct ospf6_header));
1038
6cb85350
AR		 1039 if (((OSPF6_OPT_ISSET_EXT(dbdesc->options, OSPF6_OPT_AT) ==
1040 OSPF6_OPT_AT) &&
1041 (oi->at_data.flags == 0)) ||
1042 ((OSPF6_OPT_ISSET_EXT(dbdesc->options, OSPF6_OPT_AT) !=
1043 OSPF6_OPT_AT) &&
1044 (oi->at_data.flags != 0))) {
1045 if (IS_OSPF6_DEBUG_AUTH_RX)
1046 zlog_warn(
1047 "VRF %s: IF %s AT-bit mismatch in dbdesc packet",
1048 oi->interface->vrf->name, oi->interface->name);
1049 oi->at_data.rx_drop++;
1050 return;
1051 }
1052
d62a17ae 1053 /* Interface MTU check */
1054 if (!oi->mtu_ignore && ntohs(dbdesc->ifmtu) != oi->ifmtu) {
ff99e5b6 1055 zlog_warn("VRF %s: I/F %s MTU mismatch (my %d rcvd %d)",
096f7609
IR		 1056 oi->interface->vrf->name, oi->interface->name,
1057 oi->ifmtu, ntohs(dbdesc->ifmtu));
d62a17ae 1058 return;
1059 }
1060
1061 if (dbdesc->reserved1 || dbdesc->reserved2) {
f44d0f5e 1062 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 1063 zlog_debug(
1064 "Non-0 reserved field in %s's DbDesc, correct",
1065 on->name);
1066 dbdesc->reserved1 = 0;
1067 dbdesc->reserved2 = 0;
1068 }
1069
43855e3d
CS		 1070 oi->db_desc_in++;
1071
beadc736 1072 if (ntohl(oh->router_id) < ntohl(oi->area->ospf6->router_id))
d62a17ae 1073 ospf6_dbdesc_recv_master(oh, on);
beadc736 1074 else if (ntohl(oi->area->ospf6->router_id) < ntohl(oh->router_id))
d62a17ae 1075 ospf6_dbdesc_recv_slave(oh, on);
1076 else {
f44d0f5e 1077 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 1078 zlog_debug("Can't decide which is master, ignore");
1079 }
718e3744 1080}
1081
d62a17ae 1082static void ospf6_lsreq_recv(struct in6_addr *src, struct in6_addr *dst,
1083 struct ospf6_interface *oi,
1084 struct ospf6_header *oh)
718e3744 1085{
d62a17ae 1086 struct ospf6_neighbor *on;
1087 char *p;
1088 struct ospf6_lsreq_entry *e;
1089 struct ospf6_lsdb *lsdb = NULL;
1090 struct ospf6_lsa *lsa;
1091
1092 on = ospf6_neighbor_lookup(oh->router_id, oi);
1093 if (on == NULL) {
f44d0f5e 1094 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 1095 zlog_debug("Neighbor not found, ignore");
1096 return;
1097 }
1098
1099 if (on->state != OSPF6_NEIGHBOR_EXCHANGE
1100 && on->state != OSPF6_NEIGHBOR_LOADING
1101 && on->state != OSPF6_NEIGHBOR_FULL) {
f44d0f5e 1102 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 1103 zlog_debug("Neighbor state less than Exchange, ignore");
1104 return;
1105 }
1106
43855e3d
CS		 1107 oi->ls_req_in++;
1108
d62a17ae 1109 /* Process each request */
1110 for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header));
1111 p + sizeof(struct ospf6_lsreq_entry) <= OSPF6_MESSAGE_END(oh);
1112 p += sizeof(struct ospf6_lsreq_entry)) {
1113 e = (struct ospf6_lsreq_entry *)p;
1114
1115 switch (OSPF6_LSA_SCOPE(e->type)) {
1116 case OSPF6_SCOPE_LINKLOCAL:
1117 lsdb = on->ospf6_if->lsdb;
1118 break;
1119 case OSPF6_SCOPE_AREA:
1120 lsdb = on->ospf6_if->area->lsdb;
1121 break;
1122 case OSPF6_SCOPE_AS:
1123 lsdb = on->ospf6_if->area->ospf6->lsdb;
1124 break;
1125 default:
1126 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
1127 zlog_debug("Ignoring LSA of reserved scope");
1128 continue;
d62a17ae 1129 }
1130
1131 /* Find database copy */
1132 lsa = ospf6_lsdb_lookup(e->type, e->id, e->adv_router, lsdb);
1133 if (lsa == NULL) {
1b1f7b4f 1134 zlog_warn(
1135 "Can't find requested lsa [%s Id:%pI4 Adv:%pI4] send badLSReq",
1136 ospf6_lstype_name(e->type), &e->id,
1137 &e->adv_router);
d62a17ae 1138 thread_add_event(master, bad_lsreq, on, 0, NULL);
1139 return;
1140 }
1141
1142 ospf6_lsdb_add(ospf6_lsa_copy(lsa), on->lsupdate_list);
1143 }
1144
1145 assert(p == OSPF6_MESSAGE_END(oh));
1146
1147 /* schedule send lsupdate */
1148 THREAD_OFF(on->thread_send_lsupdate);
1149 thread_add_event(master, ospf6_lsupdate_send_neighbor, on, 0,
1150 &on->thread_send_lsupdate);
718e3744 1151}
1152
abc7ef44
DO		 1153/* Verify, that the specified memory area contains exactly N valid IPv6
1154 prefixes as specified by RFC5340, A.4.1. */
d62a17ae 1155static unsigned ospf6_prefixes_examin(
1156 struct ospf6_prefix *current, /* start of buffer */
1157 unsigned length,
d7c0a89a 1158 const uint32_t req_num_pfxs /* always compared with the actual number
d62a17ae 1159 of prefixes */
d7c0a89a 1160)
abc7ef44 1161{
d7c0a89a
QY		 1162 uint8_t requested_pfx_bytes;
1163 uint32_t real_num_pfxs = 0;
d62a17ae 1164
1165 while (length) {
1166 if (length < OSPF6_PREFIX_MIN_SIZE) {
1b1f7b4f 1167 zlog_warn("%s: undersized IPv6 prefix header",
1168 __func__);
d62a17ae 1169 return MSG_NG;
1170 }
1171 /* safe to look deeper */
1172 if (current->prefix_length > IPV6_MAX_BITLEN) {
1b1f7b4f 1173 zlog_warn("%s: invalid PrefixLength (%u bits)",
1174 __func__, current->prefix_length);
d62a17ae 1175 return MSG_NG;
1176 }
1177 /* covers both fixed- and variable-sized fields */
1178 requested_pfx_bytes =
1179 OSPF6_PREFIX_MIN_SIZE
1180 + OSPF6_PREFIX_SPACE(current->prefix_length);
1181 if (requested_pfx_bytes > length) {
1b1f7b4f 1182 zlog_warn("%s: undersized IPv6 prefix", __func__);
d62a17ae 1183 return MSG_NG;
1184 }
1185 /* next prefix */
1186 length -= requested_pfx_bytes;
1187 current = (struct ospf6_prefix *)((caddr_t)current
1188 + requested_pfx_bytes);
1189 real_num_pfxs++;
1190 }
1191 if (real_num_pfxs != req_num_pfxs) {
1b1f7b4f 1192 zlog_warn(
1193 "%s: IPv6 prefix number mismatch (%u required, %u real)",
1194 __func__, req_num_pfxs, real_num_pfxs);
d62a17ae 1195 return MSG_NG;
1196 }
1197 return MSG_OK;
abc7ef44
DO		 1198}
1199
1200/* Verify an LSA to have a valid length and dispatch further (where
1201 appropriate) to check if the contents, including nested IPv6 prefixes,
1202 is properly sized/aligned within the LSA. Note that this function gets
1203 LSA type in network byte order, uses in host byte order and passes to
1204 ospf6_lstype_name() in network byte order again. */
d62a17ae 1205static unsigned ospf6_lsa_examin(struct ospf6_lsa_header *lsah,
d7c0a89a
QY		 1206 const uint16_t lsalen,
1207 const uint8_t headeronly)
abc7ef44 1208{
d62a17ae 1209 struct ospf6_intra_prefix_lsa *intra_prefix_lsa;
1210 struct ospf6_as_external_lsa *as_external_lsa;
1211 struct ospf6_link_lsa *link_lsa;
1212 unsigned exp_length;
d7c0a89a
QY		 1213 uint8_t ltindex;
1214 uint16_t lsatype;
d62a17ae 1215
1216 /* In case an additional minimum length constraint is defined for
1217 current
1218 LSA type, make sure that this constraint is met. */
1219 lsatype = ntohs(lsah->type);
1220 ltindex = lsatype & OSPF6_LSTYPE_FCODE_MASK;
1221 if (ltindex < OSPF6_LSTYPE_SIZE && ospf6_lsa_minlen[ltindex]
1222 && lsalen < ospf6_lsa_minlen[ltindex] + OSPF6_LSA_HEADER_SIZE) {
1b1f7b4f 1223 zlog_warn("%s: undersized (%u B) LSA", __func__, lsalen);
d62a17ae 1224 return MSG_NG;
1225 }
1226 switch (lsatype) {
1227 case OSPF6_LSTYPE_ROUTER:
1228 /* RFC5340 A.4.3, LSA header + OSPF6_ROUTER_LSA_MIN_SIZE bytes
1229 followed
1230 by N>=0 interface descriptions. */
1231 if ((lsalen - OSPF6_LSA_HEADER_SIZE - OSPF6_ROUTER_LSA_MIN_SIZE)
1232 % OSPF6_ROUTER_LSDESC_FIX_SIZE) {
1b1f7b4f 1233 zlog_warn(
1234 "%s: Router LSA interface description alignment error",
1235 __func__);
d62a17ae 1236 return MSG_NG;
1237 }
1238 break;
1239 case OSPF6_LSTYPE_NETWORK:
1240 /* RFC5340 A.4.4, LSA header + OSPF6_NETWORK_LSA_MIN_SIZE bytes
1241 followed by N>=0 attached router descriptions. */
1242 if ((lsalen - OSPF6_LSA_HEADER_SIZE
1243 - OSPF6_NETWORK_LSA_MIN_SIZE)
1244 % OSPF6_NETWORK_LSDESC_FIX_SIZE) {
1b1f7b4f 1245 zlog_warn(
1246 "%s: Network LSA router description alignment error",
1247 __func__);
d62a17ae 1248 return MSG_NG;
1249 }
1250 break;
1251 case OSPF6_LSTYPE_INTER_PREFIX:
1252 /* RFC5340 A.4.5, LSA header + OSPF6_INTER_PREFIX_LSA_MIN_SIZE
1253 bytes
1254 followed by 3-4 fields of a single IPv6 prefix. */
1255 if (headeronly)
1256 break;
1257 return ospf6_prefixes_examin(
1258 (struct ospf6_prefix
1259 *)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE
1260 + OSPF6_INTER_PREFIX_LSA_MIN_SIZE),
1261 lsalen - OSPF6_LSA_HEADER_SIZE
1262 - OSPF6_INTER_PREFIX_LSA_MIN_SIZE,
1263 1);
1264 case OSPF6_LSTYPE_INTER_ROUTER:
1265 /* RFC5340 A.4.6, fixed-size LSA. */
1266 if (lsalen
1267 > OSPF6_LSA_HEADER_SIZE + OSPF6_INTER_ROUTER_LSA_FIX_SIZE) {
1b1f7b4f 1268 zlog_warn("%s: Inter Router LSA oversized (%u B) LSA",
1269 __func__, lsalen);
d62a17ae 1270 return MSG_NG;
1271 }
1272 break;
1273 case OSPF6_LSTYPE_AS_EXTERNAL: /* RFC5340 A.4.7, same as A.4.8. */
1274 case OSPF6_LSTYPE_TYPE_7:
1275 /* RFC5340 A.4.8, LSA header + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE
1276 bytes
1277 followed by 3-4 fields of IPv6 prefix and 3 conditional LSA
1278 fields:
1279 16 bytes of forwarding address, 4 bytes of external route
1280 tag,
1281 4 bytes of referenced link state ID. */
1282 if (headeronly)
1283 break;
1284 as_external_lsa =
1285 (struct ospf6_as_external_lsa
1286 *)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE);
1287 exp_length =
1288 OSPF6_LSA_HEADER_SIZE + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE;
1289 /* To find out if the last optional field (Referenced Link State
1290 ID) is
1291 assumed in this LSA, we need to access fixed fields of the
1292 IPv6
1293 prefix before ospf6_prefix_examin() confirms its sizing. */
1294 if (exp_length + OSPF6_PREFIX_MIN_SIZE > lsalen) {
1b1f7b4f 1295 zlog_warn(
1296 "%s: AS External undersized (%u B) LSA header",
1297 __func__, lsalen);
d62a17ae 1298 return MSG_NG;
1299 }
1300 /* forwarding address */
1301 if (CHECK_FLAG(as_external_lsa->bits_metric, OSPF6_ASBR_BIT_F))
1302 exp_length += 16;
1303 /* external route tag */
1304 if (CHECK_FLAG(as_external_lsa->bits_metric, OSPF6_ASBR_BIT_T))
1305 exp_length += 4;
1306 /* referenced link state ID */
1307 if (as_external_lsa->prefix.u._prefix_referenced_lstype)
1308 exp_length += 4;
1309 /* All the fixed-size fields (mandatory and optional) must fit.
1310 I.e.,
1311 this check does not include any IPv6 prefix fields. */
1312 if (exp_length > lsalen) {
1b1f7b4f 1313 zlog_warn(
1314 "%s: AS External undersized (%u B) LSA header",
1315 __func__, lsalen);
d62a17ae 1316 return MSG_NG;
1317 }
1318 /* The last call completely covers the remainder (IPv6 prefix).
1319 */
1320 return ospf6_prefixes_examin(
1321 (struct ospf6_prefix
1322 *)((caddr_t)as_external_lsa
1323 + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE),
1324 lsalen - exp_length, 1);
1325 case OSPF6_LSTYPE_LINK:
1326 /* RFC5340 A.4.9, LSA header + OSPF6_LINK_LSA_MIN_SIZE bytes
1327 followed
1328 by N>=0 IPv6 prefix blocks (with N declared beforehand). */
1329 if (headeronly)
1330 break;
1331 link_lsa = (struct ospf6_link_lsa *)((caddr_t)lsah
1332 + OSPF6_LSA_HEADER_SIZE);
1333 return ospf6_prefixes_examin(
1334 (struct ospf6_prefix *)((caddr_t)link_lsa
1335 + OSPF6_LINK_LSA_MIN_SIZE),
1336 lsalen - OSPF6_LSA_HEADER_SIZE
1337 - OSPF6_LINK_LSA_MIN_SIZE,
1338 ntohl(link_lsa->prefix_num) /* 32 bits */
9d303b37 1339 );
d62a17ae 1340 case OSPF6_LSTYPE_INTRA_PREFIX:
1341 /* RFC5340 A.4.10, LSA header + OSPF6_INTRA_PREFIX_LSA_MIN_SIZE
1342 bytes
1343 followed by N>=0 IPv6 prefixes (with N declared beforehand).
1344 */
1345 if (headeronly)
1346 break;
1347 intra_prefix_lsa =
1348 (struct ospf6_intra_prefix_lsa
1349 *)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE);
1350 return ospf6_prefixes_examin(
1351 (struct ospf6_prefix
1352 *)((caddr_t)intra_prefix_lsa
1353 + OSPF6_INTRA_PREFIX_LSA_MIN_SIZE),
1354 lsalen - OSPF6_LSA_HEADER_SIZE
1355 - OSPF6_INTRA_PREFIX_LSA_MIN_SIZE,
1356 ntohs(intra_prefix_lsa->prefix_num) /* 16 bits */
0d1753a7 1357 );
1358 case OSPF6_LSTYPE_GRACE_LSA:
1359 if (lsalen < OSPF6_LSA_HEADER_SIZE + GRACE_PERIOD_TLV_SIZE
1360 + GRACE_RESTART_REASON_TLV_SIZE) {
0fc3e113 1361 if (IS_DEBUG_OSPF6_GR)
0d1753a7 1362 zlog_debug("%s: Undersized GraceLSA.",
1363 __func__);
1364 return MSG_NG;
1365 }
d62a17ae 1366 }
1367 /* No additional validation is possible for unknown LSA types, which are
1368 themselves valid in OPSFv3, hence the default decision is to accept.
1369 */
1370 return MSG_OK;
abc7ef44
DO		 1371}
1372
1373/* Verify if the provided input buffer is a valid sequence of LSAs. This
1374 includes verification of LSA blocks length/alignment and dispatching
1375 of deeper-level checks. */
1376static unsigned
d62a17ae 1377ospf6_lsaseq_examin(struct ospf6_lsa_header *lsah, /* start of buffered data */
d7c0a89a 1378 size_t length, const uint8_t headeronly,
d62a17ae 1379 /* When declared_num_lsas is not 0, compare it to the real
1380 number of LSAs
1381 and treat the difference as an error. */
d7c0a89a 1382 const uint32_t declared_num_lsas)
abc7ef44 1383{
d7c0a89a 1384 uint32_t counted_lsas = 0;
d62a17ae 1385
1386 while (length) {
d7c0a89a 1387 uint16_t lsalen;
d62a17ae 1388 if (length < OSPF6_LSA_HEADER_SIZE) {
1b1f7b4f 1389 zlog_warn(
1390 "%s: undersized (%zu B) trailing (#%u) LSA header",
1391 __func__, length, counted_lsas);
d62a17ae 1392 return MSG_NG;
1393 }
1394 /* save on ntohs() calls here and in the LSA validator */
1395 lsalen = OSPF6_LSA_SIZE(lsah);
1396 if (lsalen < OSPF6_LSA_HEADER_SIZE) {
1b1f7b4f 1397 zlog_warn(
1398 "%s: malformed LSA header #%u, declared length is %u B",
1399 __func__, counted_lsas, lsalen);
d62a17ae 1400 return MSG_NG;
1401 }
1402 if (headeronly) {
1403 /* less checks here and in ospf6_lsa_examin() */
1404 if (MSG_OK != ospf6_lsa_examin(lsah, lsalen, 1)) {
1b1f7b4f 1405 zlog_warn(
1406 "%s: anomaly in header-only %s LSA #%u",
1407 __func__, ospf6_lstype_name(lsah->type),
1408 counted_lsas);
d62a17ae 1409 return MSG_NG;
1410 }
1411 lsah = (struct ospf6_lsa_header
1412 *)((caddr_t)lsah
1413 + OSPF6_LSA_HEADER_SIZE);
1414 length -= OSPF6_LSA_HEADER_SIZE;
1415 } else {
1416 /* make sure the input buffer is deep enough before
1417 * further checks */
1418 if (lsalen > length) {
1b1f7b4f 1419 zlog_warn(
1420 "%s: anomaly in %s LSA #%u: declared length is %u B, buffered length is %zu B",
1421 __func__, ospf6_lstype_name(lsah->type),
1422 counted_lsas, lsalen, length);
d62a17ae 1423 return MSG_NG;
1424 }
1425 if (MSG_OK != ospf6_lsa_examin(lsah, lsalen, 0)) {
1b1f7b4f 1426 zlog_warn("%s: anomaly in %s LSA #%u", __func__,
1427 ospf6_lstype_name(lsah->type),
1428 counted_lsas);
d62a17ae 1429 return MSG_NG;
1430 }
1431 lsah = (struct ospf6_lsa_header *)((caddr_t)lsah
1432 + lsalen);
1433 length -= lsalen;
1434 }
1435 counted_lsas++;
1436 }
1437
1438 if (declared_num_lsas && counted_lsas != declared_num_lsas) {
1b1f7b4f 1439 zlog_warn("%s: #LSAs declared (%u) does not match actual (%u)",
1440 __func__, declared_num_lsas, counted_lsas);
d62a17ae 1441 return MSG_NG;
1442 }
1443 return MSG_OK;
abc7ef44
DO		 1444}
1445
1446/* Verify a complete OSPF packet for proper sizing/alignment. */
d62a17ae 1447static unsigned ospf6_packet_examin(struct ospf6_header *oh,
1448 const unsigned bytesonwire)
abc7ef44 1449{
d62a17ae 1450 struct ospf6_lsupdate *lsupd;
1451 unsigned test;
1452
1453 /* length, 1st approximation */
1454 if (bytesonwire < OSPF6_HEADER_SIZE) {
1b1f7b4f 1455 zlog_warn("%s: undersized (%u B) packet", __func__,
1456 bytesonwire);
d62a17ae 1457 return MSG_NG;
1458 }
6cb85350 1459
d62a17ae 1460 /* Now it is safe to access header fields. */
1461 if (bytesonwire != ntohs(oh->length)) {
1b1f7b4f 1462 zlog_warn("%s: %s packet length error (%u real, %u declared)",
6cb85350
AR		 1463 __func__, ospf6_message_type(oh->type), bytesonwire,
1464 ntohs(oh->length));
d62a17ae 1465 return MSG_NG;
1466 }
6cb85350 1467
d62a17ae 1468 /* version check */
1469 if (oh->version != OSPFV3_VERSION) {
1b1f7b4f 1470 zlog_warn("%s: invalid (%u) protocol version", __func__,
1471 oh->version);
d62a17ae 1472 return MSG_NG;
1473 }
1474 /* length, 2nd approximation */
1475 if (oh->type < OSPF6_MESSAGE_TYPE_ALL && ospf6_packet_minlen[oh->type]
1476 && bytesonwire
1477 < OSPF6_HEADER_SIZE + ospf6_packet_minlen[oh->type]) {
1b1f7b4f 1478 zlog_warn("%s: undersized (%u B) %s packet", __func__,
6cb85350 1479 bytesonwire, ospf6_message_type(oh->type));
d62a17ae 1480 return MSG_NG;
1481 }
1482 /* type-specific deeper validation */
1483 switch (oh->type) {
1484 case OSPF6_MESSAGE_TYPE_HELLO:
1485 /* RFC5340 A.3.2, packet header + OSPF6_HELLO_MIN_SIZE bytes
1486 followed
1487 by N>=0 router-IDs. */
1488 if (0
1489 == (bytesonwire - OSPF6_HEADER_SIZE - OSPF6_HELLO_MIN_SIZE)
1490 % 4)
1491 return MSG_OK;
1b1f7b4f 1492 zlog_warn("%s: alignment error in %s packet", __func__,
6cb85350 1493 ospf6_message_type(oh->type));
d62a17ae 1494 return MSG_NG;
1495 case OSPF6_MESSAGE_TYPE_DBDESC:
1496 /* RFC5340 A.3.3, packet header + OSPF6_DB_DESC_MIN_SIZE bytes
1497 followed
1498 by N>=0 header-only LSAs. */
1499 test = ospf6_lsaseq_examin(
1500 (struct ospf6_lsa_header *)((caddr_t)oh
1501 + OSPF6_HEADER_SIZE
1502 + OSPF6_DB_DESC_MIN_SIZE),
1503 bytesonwire - OSPF6_HEADER_SIZE
1504 - OSPF6_DB_DESC_MIN_SIZE,
1505 1, 0);
1506 break;
1507 case OSPF6_MESSAGE_TYPE_LSREQ:
1508 /* RFC5340 A.3.4, packet header + N>=0 LS description blocks. */
1509 if (0
1510 == (bytesonwire - OSPF6_HEADER_SIZE - OSPF6_LS_REQ_MIN_SIZE)
1511 % OSPF6_LSREQ_LSDESC_FIX_SIZE)
1512 return MSG_OK;
1b1f7b4f 1513 zlog_warn("%s: alignment error in %s packet", __func__,
6cb85350 1514 ospf6_message_type(oh->type));
d62a17ae 1515 return MSG_NG;
1516 case OSPF6_MESSAGE_TYPE_LSUPDATE:
1517 /* RFC5340 A.3.5, packet header + OSPF6_LS_UPD_MIN_SIZE bytes
1518 followed
1519 by N>=0 full LSAs (with N declared beforehand). */
1520 lsupd = (struct ospf6_lsupdate *)((caddr_t)oh
1521 + OSPF6_HEADER_SIZE);
1522 test = ospf6_lsaseq_examin(
1523 (struct ospf6_lsa_header *)((caddr_t)lsupd
1524 + OSPF6_LS_UPD_MIN_SIZE),
1525 bytesonwire - OSPF6_HEADER_SIZE - OSPF6_LS_UPD_MIN_SIZE,
1526 0, ntohl(lsupd->lsa_number) /* 32 bits */
9d303b37 1527 );
d62a17ae 1528 break;
1529 case OSPF6_MESSAGE_TYPE_LSACK:
1530 /* RFC5340 A.3.6, packet header + N>=0 header-only LSAs. */
1531 test = ospf6_lsaseq_examin(
1532 (struct ospf6_lsa_header *)((caddr_t)oh
1533 + OSPF6_HEADER_SIZE
1534 + OSPF6_LS_ACK_MIN_SIZE),
1535 bytesonwire - OSPF6_HEADER_SIZE - OSPF6_LS_ACK_MIN_SIZE,
1536 1, 0);
1537 break;
1538 default:
1b1f7b4f 1539 zlog_warn("%s: invalid (%u) message type", __func__, oh->type);
d62a17ae 1540 return MSG_NG;
1541 }
1b1f7b4f 1542 if (test != MSG_OK)
1543 zlog_warn("%s: anomaly in %s packet", __func__,
6cb85350 1544 ospf6_message_type(oh->type));
d62a17ae 1545 return test;
abc7ef44
DO		 1546}
1547
1548/* Verify particular fields of otherwise correct received OSPF packet to
1549 meet the requirements of RFC. */
d62a17ae 1550static int ospf6_rxpacket_examin(struct ospf6_interface *oi,
1551 struct ospf6_header *oh,
1552 const unsigned bytesonwire)
abc7ef44 1553{
d62a17ae 1554
1555 if (MSG_OK != ospf6_packet_examin(oh, bytesonwire))
1556 return MSG_NG;
1557
1558 /* Area-ID check */
1559 if (oh->area_id != oi->area->area_id) {
ff99e5b6 1560 if (oh->area_id == OSPF_AREA_BACKBONE)
1561 zlog_warn(
1562 "VRF %s: I/F %s Message may be via Virtual Link: not supported",
096f7609 1563 oi->interface->vrf->name, oi->interface->name);
ff99e5b6 1564 else
1565 zlog_warn(
d47b448d 1566 "VRF %s: I/F %s Area-ID mismatch (my %pI4, rcvd %pI4)",
096f7609
IR		 1567 oi->interface->vrf->name, oi->interface->name,
1568 &oi->area->area_id, &oh->area_id);
d62a17ae 1569 return MSG_NG;
1570 }
1571
1572 /* Instance-ID check */
1573 if (oh->instance_id != oi->instance_id) {
ff99e5b6 1574 zlog_warn(
1575 "VRF %s: I/F %s Instance-ID mismatch (my %u, rcvd %u)",
096f7609
IR		 1576 oi->interface->vrf->name, oi->interface->name,
1577 oi->instance_id, oh->instance_id);
d62a17ae 1578 return MSG_NG;
1579 }
1580
1581 /* Router-ID check */
1582 if (oh->router_id == oi->area->ospf6->router_id) {
d47b448d 1583 zlog_warn("VRF %s: I/F %s Duplicate Router-ID (%pI4)",
096f7609
IR		 1584 oi->interface->vrf->name, oi->interface->name,
1585 &oh->router_id);
d62a17ae 1586 return MSG_NG;
1587 }
1588 return MSG_OK;
abc7ef44
DO		 1589}
1590
d62a17ae 1591static void ospf6_lsupdate_recv(struct in6_addr *src, struct in6_addr *dst,
1592 struct ospf6_interface *oi,
1593 struct ospf6_header *oh)
718e3744 1594{
d62a17ae 1595 struct ospf6_neighbor *on;
1596 struct ospf6_lsupdate *lsupdate;
1597 char *p;
1598
1599 on = ospf6_neighbor_lookup(oh->router_id, oi);
1600 if (on == NULL) {
f44d0f5e 1601 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 1602 zlog_debug("Neighbor not found, ignore");
1603 return;
1604 }
1605
1606 if (on->state != OSPF6_NEIGHBOR_EXCHANGE
1607 && on->state != OSPF6_NEIGHBOR_LOADING
1608 && on->state != OSPF6_NEIGHBOR_FULL) {
f44d0f5e 1609 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 1610 zlog_debug("Neighbor state less than Exchange, ignore");
1611 return;
1612 }
1613
1614 lsupdate = (struct ospf6_lsupdate *)((caddr_t)oh
1615 + sizeof(struct ospf6_header));
718e3744 1616
43855e3d
CS		 1617 oi->ls_upd_in++;
1618
d62a17ae 1619 /* Process LSAs */
1620 for (p = (char *)((caddr_t)lsupdate + sizeof(struct ospf6_lsupdate));
1621 p < OSPF6_MESSAGE_END(oh)
1622 && p + OSPF6_LSA_SIZE(p) <= OSPF6_MESSAGE_END(oh);
1623 p += OSPF6_LSA_SIZE(p)) {
1624 ospf6_receive_lsa(on, (struct ospf6_lsa_header *)p);
1625 }
1626
1627 assert(p == OSPF6_MESSAGE_END(oh));
508e53e2 1628}
1629
d62a17ae 1630static void ospf6_lsack_recv(struct in6_addr *src, struct in6_addr *dst,
1631 struct ospf6_interface *oi,
1632 struct ospf6_header *oh)
508e53e2 1633{
d62a17ae 1634 struct ospf6_neighbor *on;
1635 char *p;
1636 struct ospf6_lsa *his, *mine;
1637 struct ospf6_lsdb *lsdb = NULL;
1638
1639 assert(oh->type == OSPF6_MESSAGE_TYPE_LSACK);
1640
1641 on = ospf6_neighbor_lookup(oh->router_id, oi);
1642 if (on == NULL) {
f44d0f5e 1643 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 1644 zlog_debug("Neighbor not found, ignore");
1645 return;
1646 }
1647
1648 if (on->state != OSPF6_NEIGHBOR_EXCHANGE
1649 && on->state != OSPF6_NEIGHBOR_LOADING
1650 && on->state != OSPF6_NEIGHBOR_FULL) {
f44d0f5e 1651 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR))
d62a17ae 1652 zlog_debug("Neighbor state less than Exchange, ignore");
1653 return;
1654 }
1655
43855e3d
CS		 1656 oi->ls_ack_in++;
1657
d62a17ae 1658 for (p = (char *)((caddr_t)oh + sizeof(struct ospf6_header));
1659 p + sizeof(struct ospf6_lsa_header) <= OSPF6_MESSAGE_END(oh);
1660 p += sizeof(struct ospf6_lsa_header)) {
1661 his = ospf6_lsa_create_headeronly((struct ospf6_lsa_header *)p);
1662
1663 switch (OSPF6_LSA_SCOPE(his->header->type)) {
1664 case OSPF6_SCOPE_LINKLOCAL:
1665 lsdb = on->ospf6_if->lsdb;
1666 break;
1667 case OSPF6_SCOPE_AREA:
1668 lsdb = on->ospf6_if->area->lsdb;
1669 break;
1670 case OSPF6_SCOPE_AS:
1671 lsdb = on->ospf6_if->area->ospf6->lsdb;
1672 break;
1673 case OSPF6_SCOPE_RESERVED:
1674 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
1675 zlog_debug("Ignoring LSA of reserved scope");
1676 ospf6_lsa_delete(his);
1677 continue;
d62a17ae 1678 }
1679
1680 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
1681 zlog_debug("%s acknowledged by %s", his->name,
1682 on->name);
1683
1684 /* Find database copy */
1685 mine = ospf6_lsdb_lookup(his->header->type, his->header->id,
1686 his->header->adv_router, lsdb);
1687 if (mine == NULL) {
1688 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
1689 zlog_debug("No database copy");
1690 ospf6_lsa_delete(his);
1691 continue;
1692 }
1693
1694 /* Check if the LSA is on his retrans-list */
1695 mine = ospf6_lsdb_lookup(his->header->type, his->header->id,
1696 his->header->adv_router,
1697 on->retrans_list);
1698 if (mine == NULL) {
1699 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
1700 zlog_debug("Not on %s's retrans-list",
1701 on->name);
1702 ospf6_lsa_delete(his);
1703 continue;
1704 }
1705
1706 if (ospf6_lsa_compare(his, mine) != 0) {
1707 /* Log this questionable acknowledgement,
1708 and examine the next one. */
1709 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
1710 zlog_debug("Questionable acknowledgement");
1711 ospf6_lsa_delete(his);
1712 continue;
1713 }
1714
1715 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV))
1716 zlog_debug(
1717 "Acknowledged, remove from %s's retrans-list",
1718 on->name);
1719
1720 ospf6_decrement_retrans_count(mine);
1721 if (OSPF6_LSA_IS_MAXAGE(mine))
1722 ospf6_maxage_remove(on->ospf6_if->area->ospf6);
1723 ospf6_lsdb_remove(mine, on->retrans_list);
1724 ospf6_lsa_delete(his);
1725 }
1726
1727 assert(p == OSPF6_MESSAGE_END(oh));
508e53e2 1728}
1729
d7c0a89a
QY		 1730static uint8_t *recvbuf = NULL;
1731static uint8_t *sendbuf = NULL;
6ac29a51 1732static unsigned int iobuflen = 0;
3b4cd3a9 1733
d62a17ae 1734int ospf6_iobuf_size(unsigned int size)
3b4cd3a9 1735{
c047b506
DL		 1736 /* NB: there was previously code here that tried to dynamically size
1737 * the buffer for whatever we see in MTU on interfaces. Which is
1738 * _unconditionally wrong_ - we can always receive fragmented IPv6
1739 * up to the regular 64k length limit. (No jumbograms, thankfully.)
1740 */
d62a17ae 1741
c047b506
DL		 1742 if (!iobuflen) {
1743 /* the + 128 is to have some runway at the end */
1744 size_t alloc_size = 65536 + 128;
d62a17ae 1745
c047b506 1746 assert(!recvbuf && !sendbuf);
d62a17ae 1747
c047b506
DL		 1748 recvbuf = XMALLOC(MTYPE_OSPF6_MESSAGE, alloc_size);
1749 sendbuf = XMALLOC(MTYPE_OSPF6_MESSAGE, alloc_size);
1750 iobuflen = alloc_size;
1751 }
d62a17ae 1752
1753 return iobuflen;
3b4cd3a9 1754}
508e53e2 1755
d62a17ae 1756void ospf6_message_terminate(void)
ae2254aa 1757{
e1b36e13
QY		 1758 XFREE(MTYPE_OSPF6_MESSAGE, recvbuf);
1759 XFREE(MTYPE_OSPF6_MESSAGE, sendbuf);
d62a17ae 1760
1761 iobuflen = 0;
ae2254aa
TG		 1762}
1763
aa6a96ba
PR		 1764enum ospf6_read_return_enum {
1765 OSPF6_READ_ERROR,
1766 OSPF6_READ_CONTINUE,
1767};
1768
ec44732e 1769static int ospf6_read_helper(int sockfd, struct ospf6 *ospf6)
508e53e2 1770{
aa6a96ba 1771 int len;
d62a17ae 1772 struct in6_addr src, dst;
1773 ifindex_t ifindex;
1774 struct iovec iovector[2];
1775 struct ospf6_interface *oi;
1776 struct ospf6_header *oh;
6cb85350
AR		 1777 enum ospf6_auth_err ret = OSPF6_AUTH_PROCESS_NORMAL;
1778 uint32_t at_len = 0;
1779 uint32_t lls_len = 0;
d62a17ae 1780
1781 /* initialize */
1782 memset(&src, 0, sizeof(src));
1783 memset(&dst, 0, sizeof(dst));
1784 ifindex = 0;
d62a17ae 1785 iovector[0].iov_base = recvbuf;
1786 iovector[0].iov_len = iobuflen;
1787 iovector[1].iov_base = NULL;
1788 iovector[1].iov_len = 0;
1789
1790 /* receive message */
7df1f362 1791 len = ospf6_recvmsg(&src, &dst, &ifindex, iovector, sockfd);
aa6a96ba
PR		 1792 if (len < 0)
1793 return OSPF6_READ_ERROR;
1794
1795 if ((uint)len > iobuflen) {
1c50c1c0 1796 flog_err(EC_LIB_DEVELOPMENT, "Excess message read");
aa6a96ba 1797 return OSPF6_READ_ERROR;
d62a17ae 1798 }
1799
c047b506
DL		 1800 /* ensure some zeroes past the end, just as a security precaution */
1801 memset(recvbuf + len, 0, MIN(128, iobuflen - len));
1802
c5d28568 1803 oi = ospf6_interface_lookup_by_ifindex(ifindex, ospf6->vrf_id);
d62a17ae 1804 if (oi == NULL || oi->area == NULL
1805 || CHECK_FLAG(oi->flag, OSPF6_INTERFACE_DISABLE)) {
f44d0f5e 1806 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN,
1807 RECV_HDR))
e4c42d65 1808 zlog_debug("Message received on disabled interface");
aa6a96ba 1809 return OSPF6_READ_CONTINUE;
d62a17ae 1810 }
1811 if (CHECK_FLAG(oi->flag, OSPF6_INTERFACE_PASSIVE)) {
f44d0f5e 1812 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN,
1813 RECV_HDR))
d62a17ae 1814 zlog_debug("%s: Ignore message on passive interface %s",
1815 __func__, oi->interface->name);
aa6a96ba 1816 return OSPF6_READ_CONTINUE;
d62a17ae 1817 }
1818
709bd204
IR		 1819 /*
1820 * Drop packet destined to another VRF.
1821 * This happens when raw_l3mdev_accept is set to 1.
1822 */
096f7609 1823 if (ospf6->vrf_id != oi->interface->vrf->vrf_id)
709bd204
IR		 1824 return OSPF6_READ_CONTINUE;
1825
d62a17ae 1826 oh = (struct ospf6_header *)recvbuf;
6cb85350
AR		 1827 ret = ospf6_auth_validate_pkt(oi, (uint32_t *)&len, oh, &at_len,
1828 &lls_len);
1829 if (ret == OSPF6_AUTH_VALIDATE_SUCCESS) {
1830 ret = ospf6_auth_check_digest(oh, oi, &src, lls_len);
1831 if (ret == OSPF6_AUTH_VALIDATE_FAILURE) {
1832 if (IS_OSPF6_DEBUG_AUTH_RX)
1833 zlog_err(
1834 "RECV[%s]: OSPF packet auth digest miss-match on %s",
1835 oi->interface->name,
1836 ospf6_message_type(oh->type));
1837 oi->at_data.rx_drop++;
1838 return OSPF6_READ_CONTINUE;
1839 }
1840 } else if (ret == OSPF6_AUTH_VALIDATE_FAILURE) {
1841 oi->at_data.rx_drop++;
1842 return OSPF6_READ_CONTINUE;
1843 }
1844
d62a17ae 1845 if (ospf6_rxpacket_examin(oi, oh, len) != MSG_OK)
aa6a96ba 1846 return OSPF6_READ_CONTINUE;
d62a17ae 1847
1848 /* Being here means, that no sizing/alignment issues were detected in
1849 the input packet. This renders the additional checks performed below
1850 and also in the type-specific dispatching functions a dead code,
1851 which can be dismissed in a cleanup-focused review round later. */
1852
1853 /* Log */
f44d0f5e 1854 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, RECV_HDR)) {
6cb85350 1855 zlog_debug("%s received on %s", ospf6_message_type(oh->type),
d62a17ae 1856 oi->interface->name);
5145a172
DL		 1857 zlog_debug(" src: %pI6", &src);
1858 zlog_debug(" dst: %pI6", &dst);
d62a17ae 1859
1860 switch (oh->type) {
1861 case OSPF6_MESSAGE_TYPE_HELLO:
f44d0f5e 1862 ospf6_hello_print(oh, OSPF6_ACTION_RECV);
d62a17ae 1863 break;
1864 case OSPF6_MESSAGE_TYPE_DBDESC:
f44d0f5e 1865 ospf6_dbdesc_print(oh, OSPF6_ACTION_RECV);
d62a17ae 1866 break;
1867 case OSPF6_MESSAGE_TYPE_LSREQ:
f44d0f5e 1868 ospf6_lsreq_print(oh, OSPF6_ACTION_RECV);
d62a17ae 1869 break;
1870 case OSPF6_MESSAGE_TYPE_LSUPDATE:
f44d0f5e 1871 ospf6_lsupdate_print(oh, OSPF6_ACTION_RECV);
d62a17ae 1872 break;
1873 case OSPF6_MESSAGE_TYPE_LSACK:
f44d0f5e 1874 ospf6_lsack_print(oh, OSPF6_ACTION_RECV);
d62a17ae 1875 break;
1876 default:
1877 assert(0);
1878 }
6cb85350
AR		 1879
1880 if ((at_len != 0) && IS_OSPF6_DEBUG_AUTH_RX)
1881 ospf6_auth_hdr_dump_recv(oh, (len + at_len + lls_len),
1882 lls_len);
d62a17ae 1883 }
1884
1885 switch (oh->type) {
1886 case OSPF6_MESSAGE_TYPE_HELLO:
1887 ospf6_hello_recv(&src, &dst, oi, oh);
1888 break;
1889
1890 case OSPF6_MESSAGE_TYPE_DBDESC:
1891 ospf6_dbdesc_recv(&src, &dst, oi, oh);
1892 break;
1893
1894 case OSPF6_MESSAGE_TYPE_LSREQ:
1895 ospf6_lsreq_recv(&src, &dst, oi, oh);
1896 break;
1897
1898 case OSPF6_MESSAGE_TYPE_LSUPDATE:
1899 ospf6_lsupdate_recv(&src, &dst, oi, oh);
1900 break;
1901
1902 case OSPF6_MESSAGE_TYPE_LSACK:
1903 ospf6_lsack_recv(&src, &dst, oi, oh);
1904 break;
1905
1906 default:
1907 assert(0);
1908 }
1909
aa6a96ba 1910 return OSPF6_READ_CONTINUE;
718e3744 1911}
1912
cc9f21da 1913void ospf6_receive(struct thread *thread)
ec44732e
PR		 1914{
1915 int sockfd;
1916 struct ospf6 *ospf6;
aa6a96ba 1917 int count = 0;
ec44732e
PR		 1918
1919 /* add next read thread */
1920 ospf6 = THREAD_ARG(thread);
1921 sockfd = THREAD_FD(thread);
1922
1923 thread_add_read(master, ospf6_receive, ospf6, ospf6->fd,
1924 &ospf6->t_ospf6_receive);
1925
78156066 1926 while (count < ospf6->write_oi_count) {
aa6a96ba
PR		 1927 count++;
1928 switch (ospf6_read_helper(sockfd, ospf6)) {
1929 case OSPF6_READ_ERROR:
cc9f21da 1930 return;
aa6a96ba
PR		 1931 case OSPF6_READ_CONTINUE:
1932 break;
1933 }
1934 }
718e3744 1935}
1936
6cb85350
AR		 1937static void ospf6_fill_hdr_checksum(struct ospf6_interface *oi,
1938 struct ospf6_packet *op)
1939{
1940 struct ipv6_ph ph = {};
1941 struct ospf6_header *oh;
1942 void *offset = NULL;
1943
1944 if (oi->at_data.flags != 0)
1945 return;
1946
1947 memcpy(&ph.src, oi->linklocal_addr, sizeof(struct in6_addr));
1948 memcpy(&ph.dst, &op->dst, sizeof(struct in6_addr));
1949 ph.ulpl = htonl(op->length);
1950 ph.next_hdr = IPPROTO_OSPFIGP;
1951
1952 /* Suppress static analysis warnings about accessing icmp6 oob */
1953 oh = (struct ospf6_header *)STREAM_DATA(op->s);
1954 offset = oh;
1955 oh->checksum = in_cksum_with_ph6(&ph, offset, op->length);
1956}
1957
3d968031
PR		 1958static void ospf6_make_header(uint8_t type, struct ospf6_interface *oi,
1959 struct stream *s)
718e3744 1960{
3d968031 1961 struct ospf6_header *oh;
d62a17ae 1962
3d968031
PR		 1963 oh = (struct ospf6_header *)STREAM_DATA(s);
1964
1965 oh->version = (uint8_t)OSPFV3_VERSION;
1966 oh->type = type;
9ffafdd7 1967 oh->length = 0;
6cb85350 1968
d62a17ae 1969 oh->router_id = oi->area->ospf6->router_id;
1970 oh->area_id = oi->area->area_id;
9ffafdd7 1971 oh->checksum = 0;
d62a17ae 1972 oh->instance_id = oi->instance_id;
1973 oh->reserved = 0;
9ffafdd7 1974
3d968031
PR		 1975 stream_forward_endp(s, OSPF6_HEADER_SIZE);
1976}
d62a17ae 1977
3d968031
PR		 1978static void ospf6_fill_header(struct ospf6_interface *oi, struct stream *s,
1979 uint16_t length)
1980{
1981 struct ospf6_header *oh;
1982
1983 oh = (struct ospf6_header *)STREAM_DATA(s);
1984
1985 oh->length = htons(length);
1986}
1987
432b7daf
PR		 1988static void ospf6_fill_lsupdate_header(struct stream *s, uint32_t lsa_num)
1989{
1990 struct ospf6_header *oh;
1991 struct ospf6_lsupdate *lsu;
1992
1993 oh = (struct ospf6_header *)STREAM_DATA(s);
1994
1995 lsu = (struct ospf6_lsupdate *)((caddr_t)oh
1996 + sizeof(struct ospf6_header));
1997 lsu->lsa_number = htonl(lsa_num);
1998}
1999
6cb85350
AR		 2000static void ospf6_auth_trailer_copy_keychain_key(struct ospf6_interface *oi)
2001{
2002 char *keychain_name = NULL;
2003 struct keychain *keychain = NULL;
2004 struct key *key = NULL;
2005
2006 keychain_name = oi->at_data.keychain;
2007 keychain = keychain_lookup(keychain_name);
2008 if (keychain) {
2009 key = key_lookup_for_send(keychain);
2010 if (key && key->string &&
2011 key->hash_algo != KEYCHAIN_ALGO_NULL) {
2012 /* storing the values so that further
2013 * lookup can be avoided. after
2014 * processing the digest need to reset
2015 * these values
2016 */
2017 oi->at_data.hash_algo = key->hash_algo;
2018 oi->at_data.auth_key = XSTRDUP(
2019 MTYPE_OSPF6_AUTH_MANUAL_KEY, key->string);
2020 oi->at_data.key_id = key->index;
2021 SET_FLAG(oi->at_data.flags,
2022 OSPF6_AUTH_TRAILER_KEYCHAIN_VALID);
2023 }
2024 }
2025}
2026
42bfee18 2027static uint16_t ospf6_packet_max(struct ospf6_interface *oi)
3d968031 2028{
42bfee18 2029 uint16_t at_len = 0;
6cb85350 2030
3d968031 2031 assert(oi->ifmtu > sizeof(struct ip6_hdr));
6cb85350
AR		 2032
2033 if (oi->at_data.flags != 0) {
2034 if (CHECK_FLAG(oi->at_data.flags, OSPF6_AUTH_TRAILER_KEYCHAIN))
2035 ospf6_auth_trailer_copy_keychain_key(oi);
2036
2037 at_len += OSPF6_AUTH_HDR_MIN_SIZE;
2038 at_len += keychain_get_hash_len(oi->at_data.hash_algo);
2039 return oi->ifmtu - (sizeof(struct ip6_hdr)) - at_len;
2040 }
2041
3d968031
PR		 2042 return oi->ifmtu - (sizeof(struct ip6_hdr));
2043}
2044
2045static uint16_t ospf6_make_hello(struct ospf6_interface *oi, struct stream *s)
2046{
2047 struct listnode *node, *nnode;
2048 struct ospf6_neighbor *on;
2049 uint16_t length = OSPF6_HELLO_MIN_SIZE;
6cb85350
AR		 2050 uint8_t options1 = oi->area->options[1];
2051
2052 if (oi->at_data.flags != 0)
2053 options1 |= OSPF6_OPT_AT;
3d968031
PR		 2054
2055 stream_putl(s, oi->interface->ifindex);
2056 stream_putc(s, oi->priority);
2057 stream_putc(s, oi->area->options[0]);
6cb85350 2058 stream_putc(s, options1);
3d968031
PR		 2059 stream_putc(s, oi->area->options[2]);
2060 stream_putw(s, oi->hello_interval);
2061 stream_putw(s, oi->dead_interval);
2062 stream_put_ipv4(s, oi->drouter);
2063 stream_put_ipv4(s, oi->bdrouter);
d62a17ae 2064
3d968031
PR		 2065 for (ALL_LIST_ELEMENTS(oi->neighbor_list, node, nnode, on)) {
2066 if (on->state < OSPF6_NEIGHBOR_INIT)
2067 continue;
2068
2069 if ((length + sizeof(uint32_t) + OSPF6_HEADER_SIZE)
2070 > ospf6_packet_max(oi)) {
2071 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_HELLO,
2072 SEND))
2073 zlog_debug(
2074 "sending Hello message: exceeds I/F MTU");
2075 break;
2076 }
2077
2078 stream_put_ipv4(s, on->router_id);
2079 length += sizeof(uint32_t);
2080 }
2081
2082 return length;
2083}
2084
cc9f21da 2085static void ospf6_write(struct thread *thread)
3d968031
PR		 2086{
2087 struct ospf6 *ospf6 = THREAD_ARG(thread);
2088 struct ospf6_interface *oi;
2089 struct ospf6_interface *last_serviced_oi = NULL;
2090 struct ospf6_header *oh;
2091 struct ospf6_packet *op;
2092 struct listnode *node;
3d968031
PR		 2093 struct iovec iovector[2];
2094 int pkt_count = 0;
2095 int len;
bb382e24
PR		 2096 int64_t latency = 0;
2097 struct timeval timestamp;
42bfee18 2098 uint16_t at_len = 0;
3d968031
PR		 2099
2100 if (ospf6->fd < 0) {
2101 zlog_warn("ospf6_write failed to send, fd %d", ospf6->fd);
cc9f21da 2102 return;
3d968031
PR		 2103 }
2104
2105 node = listhead(ospf6->oi_write_q);
2106 assert(node);
2107 oi = listgetdata(node);
2108
78156066 2109 while ((pkt_count < ospf6->write_oi_count) && oi
3d968031
PR		 2110 && (last_serviced_oi != oi)) {
2111
2112 op = ospf6_fifo_head(oi->obuf);
2113 assert(op);
2114 assert(op->length >= OSPF6_HEADER_SIZE);
2115
2116 iovector[0].iov_base = (caddr_t)stream_pnt(op->s);
2117 iovector[0].iov_len = op->length;
2118 iovector[1].iov_base = NULL;
2119 iovector[1].iov_len = 0;
2120
2121 oh = (struct ospf6_header *)STREAM_DATA(op->s);
2122
6cb85350
AR		 2123 if (oi->at_data.flags != 0) {
2124 at_len = ospf6_auth_len_get(oi);
2125 if (at_len) {
2126 iovector[0].iov_len =
2127 ntohs(oh->length) + at_len;
2128 ospf6_auth_digest_send(oi->linklocal_addr, oi,
2129 oh, at_len,
2130 iovector[0].iov_len);
2131 } else {
2132 iovector[0].iov_len = ntohs(oh->length);
2133 }
2134 } else {
2135 iovector[0].iov_len = ntohs(oh->length);
2136 }
2137
3d968031
PR		 2138 len = ospf6_sendmsg(oi->linklocal_addr, &op->dst,
2139 oi->interface->ifindex, iovector,
2140 ospf6->fd);
6cb85350
AR		 2141
2142 if (len != (op->length + (int)at_len))
3d968031
PR		 2143 flog_err(EC_LIB_DEVELOPMENT,
2144 "Could not send entire message");
2145
a91f9d69 2146 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND_HDR)) {
3d968031 2147 zlog_debug("%s send on %s",
6cb85350 2148 ospf6_message_type(oh->type),
3d968031 2149 oi->interface->name);
779d9722
PR		 2150 zlog_debug(" src: %pI6", oi->linklocal_addr);
2151 zlog_debug(" dst: %pI6", &op->dst);
a91f9d69
PR		 2152 switch (oh->type) {
2153 case OSPF6_MESSAGE_TYPE_HELLO:
2154 ospf6_hello_print(oh, OSPF6_ACTION_SEND);
2155 break;
2156 case OSPF6_MESSAGE_TYPE_DBDESC:
2157 ospf6_dbdesc_print(oh, OSPF6_ACTION_SEND);
2158 break;
2159 case OSPF6_MESSAGE_TYPE_LSREQ:
2160 ospf6_lsreq_print(oh, OSPF6_ACTION_SEND);
2161 break;
2162 case OSPF6_MESSAGE_TYPE_LSUPDATE:
2163 ospf6_lsupdate_print(oh, OSPF6_ACTION_SEND);
2164 break;
2165 case OSPF6_MESSAGE_TYPE_LSACK:
2166 ospf6_lsack_print(oh, OSPF6_ACTION_SEND);
2167 break;
2168 default:
2169 zlog_debug("Unknown message");
2170 assert(0);
2171 break;
2172 }
3d968031 2173 }
d62a17ae 2174 switch (oh->type) {
2175 case OSPF6_MESSAGE_TYPE_HELLO:
bb382e24
PR		 2176 monotime(&timestamp);
2177 if (oi->hello_out)
2178 latency = monotime_since(&oi->last_hello, NULL)
0dd5ec12
PR		 2179 - ((int64_t)oi->hello_interval
2180 * 1000000);
bb382e24
PR		 2181
2182 /* log if latency exceeds the hello period */
0dd5ec12 2183 if (latency > ((int64_t)oi->hello_interval * 1000000))
bb382e24
PR		 2184 zlog_warn("%s hello TX high latency %" PRId64
2185 "us.",
2186 __func__, latency);
2187 oi->last_hello = timestamp;
3d968031 2188 oi->hello_out++;
d62a17ae 2189 break;
2190 case OSPF6_MESSAGE_TYPE_DBDESC:
3d968031 2191 oi->db_desc_out++;
d62a17ae 2192 break;
2193 case OSPF6_MESSAGE_TYPE_LSREQ:
3d968031 2194 oi->ls_req_out++;
d62a17ae 2195 break;
2196 case OSPF6_MESSAGE_TYPE_LSUPDATE:
3d968031 2197 oi->ls_upd_out++;
d62a17ae 2198 break;
2199 case OSPF6_MESSAGE_TYPE_LSACK:
3d968031 2200 oi->ls_ack_out++;
d62a17ae 2201 break;
2202 default:
2203 zlog_debug("Unknown message");
2204 assert(0);
2205 break;
2206 }
6cb85350
AR		 2207
2208 if ((oi->at_data.flags != 0) &&
2209 (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND_HDR)) &&
2210 (IS_OSPF6_DEBUG_AUTH_TX))
2211 ospf6_auth_hdr_dump_send(oh, iovector[0].iov_len);
2212
2213 /* initialize at_len to 0 for next packet */
2214 at_len = 0;
2215
3d968031
PR		 2216 /* Now delete packet from queue. */
2217 ospf6_packet_delete(oi);
2218
2219 /* Move this interface to the tail of write_q to
2220 serve everyone in a round robin fashion */
2221 list_delete_node(ospf6->oi_write_q, node);
2222 if (ospf6_fifo_head(oi->obuf) == NULL) {
2223 oi->on_write_q = 0;
2224 last_serviced_oi = NULL;
2225 oi = NULL;
2226 } else {
2227 listnode_add(ospf6->oi_write_q, oi);
2228 }
d62a17ae 2229
3d968031
PR		 2230 /* Setup to service from the head of the queue again */
2231 if (!list_isempty(ospf6->oi_write_q)) {
2232 node = listhead(ospf6->oi_write_q);
2233 oi = listgetdata(node);
2234 }
7df1f362 2235 }
718e3744 2236
3d968031
PR		 2237 /* If packets still remain in queue, call write thread. */
2238 if (!list_isempty(ospf6->oi_write_q))
2239 thread_add_write(master, ospf6_write, ospf6, ospf6->fd,
2240 &ospf6->t_write);
681b84e8
DT		 2241}
2242
cc9f21da 2243void ospf6_hello_send(struct thread *thread)
718e3744 2244{
d62a17ae 2245 struct ospf6_interface *oi;
3d968031
PR		 2246 struct ospf6_packet *op;
2247 uint16_t length = OSPF6_HEADER_SIZE;
d62a17ae 2248
2249 oi = (struct ospf6_interface *)THREAD_ARG(thread);
d62a17ae 2250
2251 if (oi->state <= OSPF6_INTERFACE_DOWN) {
f44d0f5e 2252 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_HELLO, SEND_HDR))
d62a17ae 2253 zlog_debug("Unable to send Hello on down interface %s",
2254 oi->interface->name);
cc9f21da 2255 return;
d62a17ae 2256 }
2257
3d968031 2258 op = ospf6_packet_new(oi->ifmtu);
d62a17ae 2259
3d968031 2260 ospf6_make_header(OSPF6_MESSAGE_TYPE_HELLO, oi, op->s);
d62a17ae 2261
3d968031
PR		 2262 /* Prepare OSPF Hello body */
2263 length += ospf6_make_hello(oi, op->s);
2264 if (length == OSPF6_HEADER_SIZE) {
2265 /* Hello overshooting MTU */
2266 ospf6_packet_free(op);
cc9f21da 2267 return;
3d968031 2268 }
d62a17ae 2269
3d968031
PR		 2270 /* Fill OSPF header. */
2271 ospf6_fill_header(oi, op->s, length);
d62a17ae 2272
3d968031
PR		 2273 /* Set packet length. */
2274 op->length = length;
d62a17ae 2275
3d968031 2276 op->dst = allspfrouters6;
d62a17ae 2277
6cb85350
AR		 2278 ospf6_fill_hdr_checksum(oi, op);
2279
3d968031
PR		 2280 /* Add packet to the top of the interface output queue, so that they
2281 * can't get delayed by things like long queues of LS Update packets
2282 */
2283 ospf6_packet_add_top(oi, op);
d62a17ae 2284
3d968031
PR		 2285 /* set next thread */
2286 thread_add_timer(master, ospf6_hello_send, oi, oi->hello_interval,
2287 &oi->thread_send_hello);
d62a17ae 2288
d6a39b53 2289 OSPF6_MESSAGE_WRITE_ON(oi);
718e3744 2290}
2291
d6a39b53 2292static uint16_t ospf6_make_dbdesc(struct ospf6_neighbor *on, struct stream *s)
718e3744 2293{
d6a39b53 2294 uint16_t length = OSPF6_DB_DESC_MIN_SIZE;
2e37407f 2295 struct ospf6_lsa *lsa, *lsanext;
6cb85350
AR		 2296 uint8_t options1 = on->ospf6_if->area->options[1];
2297
2298 if (on->ospf6_if->at_data.flags != 0)
2299 options1 |= OSPF6_OPT_AT;
d62a17ae 2300
2301 /* if this is initial one, initialize sequence number for DbDesc */
2302 if (CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_IBIT)
2303 && (on->dbdesc_seqnum == 0)) {
2304 on->dbdesc_seqnum = monotime(NULL);
2305 }
2306
d6a39b53
PR		 2307 /* reserved */
2308 stream_putc(s, 0); /* reserved 1 */
2309 stream_putc(s, on->ospf6_if->area->options[0]);
6cb85350 2310 stream_putc(s, options1);
d6a39b53
PR		 2311 stream_putc(s, on->ospf6_if->area->options[2]);
2312 stream_putw(s, on->ospf6_if->ifmtu);
2313 stream_putc(s, 0); /* reserved 2 */
2314 stream_putc(s, on->dbdesc_bits);
2315 stream_putl(s, on->dbdesc_seqnum);
d62a17ae 2316
2317 /* if this is not initial one, set LSA headers in dbdesc */
d62a17ae 2318 if (!CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_IBIT)) {
2e37407f 2319 for (ALL_LSDB(on->dbdesc_list, lsa, lsanext)) {
d62a17ae 2320 ospf6_lsa_age_update_to_send(lsa,
2321 on->ospf6_if->transdelay);
2322
2323 /* MTU check */
d6a39b53
PR		 2324 if ((length + sizeof(struct ospf6_lsa_header)
2325 + OSPF6_HEADER_SIZE)
d62a17ae 2326 > ospf6_packet_max(on->ospf6_if)) {
ccf260c4 2327 ospf6_lsa_unlock(lsa);
2328 if (lsanext)
2329 ospf6_lsa_unlock(lsanext);
d62a17ae 2330 break;
2331 }
d6a39b53
PR		 2332 stream_put(s, lsa->header,
2333 sizeof(struct ospf6_lsa_header));
2334 length += sizeof(struct ospf6_lsa_header);
d62a17ae 2335 }
2336 }
d6a39b53
PR		 2337 return length;
2338}
d62a17ae 2339
cc9f21da 2340void ospf6_dbdesc_send(struct thread *thread)
d6a39b53
PR		 2341{
2342 struct ospf6_neighbor *on;
2343 uint16_t length = OSPF6_HEADER_SIZE;
2344 struct ospf6_packet *op;
d62a17ae 2345
d6a39b53 2346 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
d6a39b53
PR		 2347
2348 if (on->state < OSPF6_NEIGHBOR_EXSTART) {
2349 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_DBDESC, SEND))
2350 zlog_debug(
2351 "Quit to send DbDesc to neighbor %s state %s",
2352 on->name, ospf6_neighbor_state_str[on->state]);
cc9f21da 2353 return;
d6a39b53
PR		 2354 }
2355
2356 /* set next thread if master */
2357 if (CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT))
2358 thread_add_timer(master, ospf6_dbdesc_send, on,
2359 on->ospf6_if->rxmt_interval,
2360 &on->thread_send_dbdesc);
d62a17ae 2361
d6a39b53
PR		 2362 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2363 ospf6_make_header(OSPF6_MESSAGE_TYPE_DBDESC, on->ospf6_if, op->s);
d62a17ae 2364
d6a39b53
PR		 2365 length += ospf6_make_dbdesc(on, op->s);
2366 ospf6_fill_header(on->ospf6_if, op->s, length);
2367
2368 /* Set packet length. */
2369 op->length = length;
d62a17ae 2370
2371 if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
d6a39b53 2372 op->dst = allspfrouters6;
d62a17ae 2373 else
d6a39b53 2374 op->dst = on->linklocal_addr;
d62a17ae 2375
6cb85350
AR		 2376 ospf6_fill_hdr_checksum(on->ospf6_if, op);
2377
d6a39b53 2378 ospf6_packet_add(on->ospf6_if, op);
43855e3d 2379
d6a39b53 2380 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
718e3744 2381}
2382
cc9f21da 2383void ospf6_dbdesc_send_newone(struct thread *thread)
718e3744 2384{
d62a17ae 2385 struct ospf6_neighbor *on;
2e37407f 2386 struct ospf6_lsa *lsa, *lsanext;
d62a17ae 2387 unsigned int size = 0;
2388
2389 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
2390 ospf6_lsdb_remove_all(on->dbdesc_list);
2391
2392 /* move LSAs from summary_list to dbdesc_list (within neighbor
2393 structure)
2394 so that ospf6_send_dbdesc () can send those LSAs */
2395 size = sizeof(struct ospf6_lsa_header) + sizeof(struct ospf6_dbdesc);
2e37407f 2396 for (ALL_LSDB(on->summary_list, lsa, lsanext)) {
bac66c5c 2397 /* if stub area then don't advertise AS-External LSAs */
4f785c07
RZ		 2398 if ((IS_AREA_STUB(on->ospf6_if->area)
2399 || IS_AREA_NSSA(on->ospf6_if->area))
bac66c5c 2400 && ntohs(lsa->header->type) == OSPF6_LSTYPE_AS_EXTERNAL) {
2401 ospf6_lsdb_remove(lsa, on->summary_list);
2402 continue;
2403 }
2404
d62a17ae 2405 if (size + sizeof(struct ospf6_lsa_header)
2406 > ospf6_packet_max(on->ospf6_if)) {
ccf260c4 2407 ospf6_lsa_unlock(lsa);
2408 if (lsanext)
2409 ospf6_lsa_unlock(lsanext);
d62a17ae 2410 break;
2411 }
2412
2413 ospf6_lsdb_add(ospf6_lsa_copy(lsa), on->dbdesc_list);
2414 ospf6_lsdb_remove(lsa, on->summary_list);
2415 size += sizeof(struct ospf6_lsa_header);
2416 }
2417
2418 if (on->summary_list->count == 0)
2419 UNSET_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT);
2420
2421 /* If slave, More bit check must be done here */
2422 if (!CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT) && /* Slave */
2423 !CHECK_FLAG(on->dbdesc_last.bits, OSPF6_DBDESC_MBIT)
2424 && !CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT))
9318fc6a
DS		 2425 thread_add_event(master, exchange_done, on, 0,
2426 &on->thread_exchange_done);
d62a17ae 2427
2428 thread_execute(master, ospf6_dbdesc_send, on, 0);
508e53e2 2429}
718e3744 2430
571eed23
PR		 2431static uint16_t ospf6_make_lsreq(struct ospf6_neighbor *on, struct stream *s)
2432{
2433 uint16_t length = 0;
2434 struct ospf6_lsa *lsa, *lsanext, *last_req = NULL;
2435
2436 for (ALL_LSDB(on->request_list, lsa, lsanext)) {
2437 if ((length + OSPF6_HEADER_SIZE)
2438 > ospf6_packet_max(on->ospf6_if)) {
2439 ospf6_lsa_unlock(lsa);
2440 if (lsanext)
2441 ospf6_lsa_unlock(lsanext);
2442 break;
2443 }
2444 stream_putw(s, 0); /* reserved */
2445 stream_putw(s, ntohs(lsa->header->type));
2446 stream_putl(s, ntohl(lsa->header->id));
2447 stream_putl(s, ntohl(lsa->header->adv_router));
2448 length += sizeof(struct ospf6_lsreq_entry);
2449 last_req = lsa;
2450 }
2451
2452 if (last_req != NULL) {
2453 if (on->last_ls_req != NULL)
2454 on->last_ls_req = ospf6_lsa_unlock(on->last_ls_req);
2455
2456 ospf6_lsa_lock(last_req);
2457 on->last_ls_req = last_req;
2458 }
2459
2460 return length;
2461}
2462
dd784cf9
PR		 2463static uint16_t ospf6_make_lsack_neighbor(struct ospf6_neighbor *on,
2464 struct ospf6_packet **op)
2465{
2466 uint16_t length = 0;
2467 struct ospf6_lsa *lsa, *lsanext;
2468 int lsa_cnt = 0;
2469
2470 for (ALL_LSDB(on->lsack_list, lsa, lsanext)) {
2471 if ((length + sizeof(struct ospf6_lsa_header)
2472 + OSPF6_HEADER_SIZE)
2473 > ospf6_packet_max(on->ospf6_if)) {
2474 /* if we run out of packet size/space here,
2475 better to try again soon. */
2476 if (lsa_cnt) {
2477 ospf6_fill_header(on->ospf6_if, (*op)->s,
2478 length + OSPF6_HEADER_SIZE);
2479
2480 (*op)->length = length + OSPF6_HEADER_SIZE;
2481 (*op)->dst = on->linklocal_addr;
6cb85350 2482 ospf6_fill_hdr_checksum(on->ospf6_if, *op);
dd784cf9
PR		 2483 ospf6_packet_add(on->ospf6_if, *op);
2484 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
2485 /* new packet */
2486 *op = ospf6_packet_new(on->ospf6_if->ifmtu);
2487 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSACK,
2488 on->ospf6_if, (*op)->s);
2489 length = 0;
2490 lsa_cnt = 0;
2491 }
2492 }
2493 ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay);
2494 stream_put((*op)->s, lsa->header,
2495 sizeof(struct ospf6_lsa_header));
2496 length += sizeof(struct ospf6_lsa_header);
2497
2498 assert(lsa->lock == 2);
2499 ospf6_lsdb_remove(lsa, on->lsack_list);
2500 lsa_cnt++;
2501 }
2502 return length;
2503}
2504
cc9f21da 2505void ospf6_lsreq_send(struct thread *thread)
508e53e2 2506{
d62a17ae 2507 struct ospf6_neighbor *on;
571eed23
PR		 2508 struct ospf6_packet *op;
2509 uint16_t length = OSPF6_HEADER_SIZE;
d62a17ae 2510
2511 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
d62a17ae 2512
2513 /* LSReq will be sent only in ExStart or Loading */
2514 if (on->state != OSPF6_NEIGHBOR_EXCHANGE
2515 && on->state != OSPF6_NEIGHBOR_LOADING) {
f44d0f5e 2516 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSREQ, SEND_HDR))
d62a17ae 2517 zlog_debug("Quit to send LSReq to neighbor %s state %s",
2518 on->name,
2519 ospf6_neighbor_state_str[on->state]);
cc9f21da 2520 return;
d62a17ae 2521 }
2522
2523 /* schedule loading_done if request list is empty */
2524 if (on->request_list->count == 0) {
2525 thread_add_event(master, loading_done, on, 0, NULL);
cc9f21da 2526 return;
d62a17ae 2527 }
2528
571eed23
PR		 2529 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2530 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSREQ, on->ospf6_if, op->s);
d62a17ae 2531
571eed23 2532 length += ospf6_make_lsreq(on, op->s);
744ba569 2533
571eed23
PR		 2534 if (length == OSPF6_HEADER_SIZE) {
2535 /* Hello overshooting MTU */
2536 ospf6_packet_free(op);
cc9f21da 2537 return;
d62a17ae 2538 }
2539
571eed23
PR		 2540 /* Fill OSPF header. */
2541 ospf6_fill_header(on->ospf6_if, op->s, length);
d62a17ae 2542
dd784cf9 2543 /* Set packet length */
571eed23 2544 op->length = length;
43855e3d 2545
d62a17ae 2546 if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
571eed23 2547 op->dst = allspfrouters6;
d62a17ae 2548 else
571eed23
PR		 2549 op->dst = on->linklocal_addr;
2550
6cb85350 2551 ospf6_fill_hdr_checksum(on->ospf6_if, op);
571eed23
PR		 2552 ospf6_packet_add(on->ospf6_if, op);
2553
2554 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
d62a17ae 2555
2556 /* set next thread */
2557 if (on->request_list->count != 0) {
d62a17ae 2558 thread_add_timer(master, ospf6_lsreq_send, on,
2559 on->ospf6_if->rxmt_interval,
2560 &on->thread_send_lsreq);
2561 }
718e3744 2562}
2563
1ba43456
CS		 2564static void ospf6_send_lsupdate(struct ospf6_neighbor *on,
2565 struct ospf6_interface *oi,
432b7daf 2566 struct ospf6_packet *op)
1ba43456
CS		 2567{
2568
2569 if (on) {
43855e3d 2570
996c9314
LB		 2571 if ((on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
2572 || (on->ospf6_if->state == OSPF6_INTERFACE_DR)
432b7daf
PR		 2573 || (on->ospf6_if->state == OSPF6_INTERFACE_BDR))
2574 op->dst = allspfrouters6;
2575 else
2576 op->dst = on->linklocal_addr;
2577 oi = on->ospf6_if;
1ba43456 2578 } else if (oi) {
996c9314
LB		 2579 if ((oi->state == OSPF6_INTERFACE_POINTTOPOINT)
2580 || (oi->state == OSPF6_INTERFACE_DR)
432b7daf
PR		 2581 || (oi->state == OSPF6_INTERFACE_BDR))
2582 op->dst = allspfrouters6;
2583 else
2584 op->dst = alldrouters6;
2585 }
2586 if (oi) {
6cb85350 2587 ospf6_fill_hdr_checksum(oi, op);
432b7daf 2588 ospf6_packet_add(oi, op);
7359e9ba
S		 2589 /* If ospf instance is being deleted, send the packet
2590 * immediately
2591 */
2592 if ((oi->area == NULL) || (oi->area->ospf6 == NULL))
2593 return;
2594 if (oi->area->ospf6->inst_shutdown) {
2595 if (oi->on_write_q == 0) {
2596 listnode_add(oi->area->ospf6->oi_write_q, oi);
2597 oi->on_write_q = 1;
2598 }
2599 thread_execute(master, ospf6_write, oi->area->ospf6, 0);
2600 } else
2601 OSPF6_MESSAGE_WRITE_ON(oi);
432b7daf
PR		 2602 }
2603}
2604
2605static uint16_t ospf6_make_lsupdate_list(struct ospf6_neighbor *on,
2606 struct ospf6_packet **op, int *lsa_cnt)
2607{
2608 uint16_t length = OSPF6_LS_UPD_MIN_SIZE;
2609 struct ospf6_lsa *lsa, *lsanext;
2610
2611 /* skip over fixed header */
2612 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
2613
2614 for (ALL_LSDB(on->lsupdate_list, lsa, lsanext)) {
42bfee18
AR		 2615 if ((length + OSPF6_LSA_SIZE(lsa->header) + OSPF6_HEADER_SIZE) >
2616 ospf6_packet_max(on->ospf6_if)) {
432b7daf
PR		 2617 ospf6_fill_header(on->ospf6_if, (*op)->s,
2618 length + OSPF6_HEADER_SIZE);
2619 (*op)->length = length + OSPF6_HEADER_SIZE;
2620 ospf6_fill_lsupdate_header((*op)->s, *lsa_cnt);
2621 ospf6_send_lsupdate(on, NULL, *op);
2622
2623 /* refresh packet */
2624 *op = ospf6_packet_new(on->ospf6_if->ifmtu);
2625 length = OSPF6_LS_UPD_MIN_SIZE;
2626 *lsa_cnt = 0;
2627 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE,
2628 on->ospf6_if, (*op)->s);
2629 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
1ba43456 2630 }
432b7daf
PR		 2631 ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay);
2632 stream_put((*op)->s, lsa->header, OSPF6_LSA_SIZE(lsa->header));
2633 (*lsa_cnt)++;
2634 length += OSPF6_LSA_SIZE(lsa->header);
2635 assert(lsa->lock == 2);
2636 ospf6_lsdb_remove(lsa, on->lsupdate_list);
1ba43456 2637 }
432b7daf
PR		 2638 return length;
2639}
2640
2641static uint16_t ospf6_make_ls_retrans_list(struct ospf6_neighbor *on,
2642 struct ospf6_packet **op,
2643 int *lsa_cnt)
2644{
2645 uint16_t length = OSPF6_LS_UPD_MIN_SIZE;
2646 struct ospf6_lsa *lsa, *lsanext;
2647
2648 /* skip over fixed header */
2649 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
2650
2651 for (ALL_LSDB(on->retrans_list, lsa, lsanext)) {
42bfee18
AR		 2652 if ((length + OSPF6_LSA_SIZE(lsa->header) + OSPF6_HEADER_SIZE) >
2653 ospf6_packet_max(on->ospf6_if)) {
432b7daf
PR		 2654 ospf6_fill_header(on->ospf6_if, (*op)->s,
2655 length + OSPF6_HEADER_SIZE);
2656 (*op)->length = length + OSPF6_HEADER_SIZE;
2657 ospf6_fill_lsupdate_header((*op)->s, *lsa_cnt);
2658 if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
2659 (*op)->dst = allspfrouters6;
2660 else
2661 (*op)->dst = on->linklocal_addr;
2662
6cb85350 2663 ospf6_fill_hdr_checksum(on->ospf6_if, *op);
432b7daf
PR		 2664 ospf6_packet_add(on->ospf6_if, *op);
2665 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
2666
2667 /* refresh packet */
2668 *op = ospf6_packet_new(on->ospf6_if->ifmtu);
2669 length = OSPF6_LS_UPD_MIN_SIZE;
2670 *lsa_cnt = 0;
2671 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE,
2672 on->ospf6_if, (*op)->s);
2673 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
1ba43456 2674 }
432b7daf
PR		 2675 ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay);
2676 stream_put((*op)->s, lsa->header, OSPF6_LSA_SIZE(lsa->header));
2677 (*lsa_cnt)++;
2678 length += OSPF6_LSA_SIZE(lsa->header);
1ba43456 2679 }
432b7daf 2680 return length;
1ba43456
CS		 2681}
2682
cc9f21da 2683void ospf6_lsupdate_send_neighbor(struct thread *thread)
718e3744 2684{
d62a17ae 2685 struct ospf6_neighbor *on;
432b7daf
PR		 2686 struct ospf6_packet *op;
2687 uint16_t length = OSPF6_HEADER_SIZE;
2688 int lsa_cnt = 0;
d62a17ae 2689
2690 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
d62a17ae 2691
f44d0f5e 2692 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND_HDR))
d62a17ae 2693 zlog_debug("LSUpdate to neighbor %s", on->name);
2694
2695 if (on->state < OSPF6_NEIGHBOR_EXCHANGE) {
f44d0f5e 2696 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE,
2697 SEND_HDR))
d62a17ae 2698 zlog_debug("Quit to send (neighbor state %s)",
2699 ospf6_neighbor_state_str[on->state]);
cc9f21da 2700 return;
d62a17ae 2701 }
2702
432b7daf
PR		 2703 /* first do lsupdate_list */
2704 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2705 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, on->ospf6_if, op->s);
2706 length += ospf6_make_lsupdate_list(on, &op, &lsa_cnt);
d62a17ae 2707 if (lsa_cnt) {
432b7daf
PR		 2708 /* Fill OSPF header. */
2709 ospf6_fill_header(on->ospf6_if, op->s, length);
2710 ospf6_fill_lsupdate_header(op->s, lsa_cnt);
2711 op->length = length;
2712 ospf6_send_lsupdate(on, NULL, op);
2713
2714 /* prepare new packet */
2715 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2716 length = OSPF6_HEADER_SIZE;
2717 lsa_cnt = 0;
2718 } else {
2719 stream_reset(op->s);
2720 length = OSPF6_HEADER_SIZE;
2721 }
2722
2723 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, on->ospf6_if, op->s);
2724 /* now do retransmit list */
2725 length += ospf6_make_ls_retrans_list(on, &op, &lsa_cnt);
d62a17ae 2726 if (lsa_cnt) {
432b7daf
PR		 2727 ospf6_fill_header(on->ospf6_if, op->s, length);
2728 ospf6_fill_lsupdate_header(op->s, lsa_cnt);
2729 op->length = length;
d62a17ae 2730 if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
432b7daf 2731 op->dst = allspfrouters6;
d62a17ae 2732 else
432b7daf 2733 op->dst = on->linklocal_addr;
6cb85350 2734 ospf6_fill_hdr_checksum(on->ospf6_if, op);
432b7daf
PR		 2735 ospf6_packet_add(on->ospf6_if, op);
2736 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
2737 } else
2738 ospf6_packet_free(op);
d62a17ae 2739
2740 if (on->lsupdate_list->count != 0) {
d62a17ae 2741 thread_add_event(master, ospf6_lsupdate_send_neighbor, on, 0,
2742 &on->thread_send_lsupdate);
2743 } else if (on->retrans_list->count != 0) {
d62a17ae 2744 thread_add_timer(master, ospf6_lsupdate_send_neighbor, on,
2745 on->ospf6_if->rxmt_interval,
2746 &on->thread_send_lsupdate);
2747 }
718e3744 2748}
2749
76249532
CS		 2750int ospf6_lsupdate_send_neighbor_now(struct ospf6_neighbor *on,
2751 struct ospf6_lsa *lsa)
2752{
432b7daf
PR		 2753 struct ospf6_packet *op;
2754 uint16_t length = OSPF6_HEADER_SIZE;
76249532 2755
432b7daf
PR		 2756 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2757 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, on->ospf6_if, op->s);
76249532 2758
432b7daf
PR		 2759 /* skip over fixed header */
2760 stream_forward_endp(op->s, OSPF6_LS_UPD_MIN_SIZE);
76249532 2761 ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay);
432b7daf
PR		 2762 stream_put(op->s, lsa->header, OSPF6_LSA_SIZE(lsa->header));
2763 length = OSPF6_HEADER_SIZE + OSPF6_LS_UPD_MIN_SIZE
2764 + OSPF6_LSA_SIZE(lsa->header);
2765 ospf6_fill_header(on->ospf6_if, op->s, length);
2766 ospf6_fill_lsupdate_header(op->s, 1);
2767 op->length = length;
76249532 2768
996c9314 2769 if (IS_OSPF6_DEBUG_FLOODING
f44d0f5e 2770 || IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND_HDR))
15569c58
DA		 2771 zlog_debug("%s: Send lsupdate with lsa %s (age %u)", __func__,
2772 lsa->name, ntohs(lsa->header->age));
76249532 2773
432b7daf 2774 ospf6_send_lsupdate(on, NULL, op);
76249532
CS		 2775
2776 return 0;
2777}
2778
432b7daf
PR		 2779static uint16_t ospf6_make_lsupdate_interface(struct ospf6_interface *oi,
2780 struct ospf6_packet **op,
2781 int *lsa_cnt)
2782{
2783 uint16_t length = OSPF6_LS_UPD_MIN_SIZE;
2784 struct ospf6_lsa *lsa, *lsanext;
2785
2786 /* skip over fixed header */
2787 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
2788
2789 for (ALL_LSDB(oi->lsupdate_list, lsa, lsanext)) {
42bfee18
AR		 2790 if (length + OSPF6_LSA_SIZE(lsa->header) + OSPF6_HEADER_SIZE >
2791 ospf6_packet_max(oi)) {
432b7daf
PR		 2792 ospf6_fill_header(oi, (*op)->s,
2793 length + OSPF6_HEADER_SIZE);
2794 (*op)->length = length + OSPF6_HEADER_SIZE;
2795 ospf6_fill_lsupdate_header((*op)->s, *lsa_cnt);
2796 ospf6_send_lsupdate(NULL, oi, *op);
2797
2798 /* refresh packet */
2799 *op = ospf6_packet_new(oi->ifmtu);
2800 length = OSPF6_LS_UPD_MIN_SIZE;
2801 *lsa_cnt = 0;
2802 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, oi,
2803 (*op)->s);
2804 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
2805 }
2806
2807 ospf6_lsa_age_update_to_send(lsa, oi->transdelay);
2808 stream_put((*op)->s, lsa->header, OSPF6_LSA_SIZE(lsa->header));
2809 (*lsa_cnt)++;
2810 length += OSPF6_LSA_SIZE(lsa->header);
2811
2812 assert(lsa->lock == 2);
2813 ospf6_lsdb_remove(lsa, oi->lsupdate_list);
2814 }
2815 return length;
2816}
2817
cc9f21da 2818void ospf6_lsupdate_send_interface(struct thread *thread)
718e3744 2819{
d62a17ae 2820 struct ospf6_interface *oi;
432b7daf
PR		 2821 struct ospf6_packet *op;
2822 uint16_t length = OSPF6_HEADER_SIZE;
2823 int lsa_cnt = 0;
d62a17ae 2824
2825 oi = (struct ospf6_interface *)THREAD_ARG(thread);
d62a17ae 2826
2827 if (oi->state <= OSPF6_INTERFACE_WAITING) {
f44d0f5e 2828 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE,
2829 SEND_HDR))
d62a17ae 2830 zlog_debug(
2831 "Quit to send LSUpdate to interface %s state %s",
2832 oi->interface->name,
2833 ospf6_interface_state_str[oi->state]);
cc9f21da 2834 return;
d62a17ae 2835 }
2836
2837 /* if we have nothing to send, return */
2838 if (oi->lsupdate_list->count == 0)
cc9f21da 2839 return;
d62a17ae 2840
432b7daf
PR		 2841 op = ospf6_packet_new(oi->ifmtu);
2842 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, oi, op->s);
2843 length += ospf6_make_lsupdate_interface(oi, &op, &lsa_cnt);
d62a17ae 2844 if (lsa_cnt) {
432b7daf
PR		 2845 /* Fill OSPF header. */
2846 ospf6_fill_header(oi, op->s, length);
2847 ospf6_fill_lsupdate_header(op->s, lsa_cnt);
2848 op->length = length;
2849 ospf6_send_lsupdate(NULL, oi, op);
2850 } else
2851 ospf6_packet_free(op);
d62a17ae 2852
2853 if (oi->lsupdate_list->count > 0) {
d62a17ae 2854 thread_add_event(master, ospf6_lsupdate_send_interface, oi, 0,
2855 &oi->thread_send_lsupdate);
2856 }
718e3744 2857}
2858
cc9f21da 2859void ospf6_lsack_send_neighbor(struct thread *thread)
718e3744 2860{
d62a17ae 2861 struct ospf6_neighbor *on;
dd784cf9
PR		 2862 struct ospf6_packet *op;
2863 uint16_t length = OSPF6_HEADER_SIZE;
d62a17ae 2864
2865 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
d62a17ae 2866
2867 if (on->state < OSPF6_NEIGHBOR_EXCHANGE) {
f44d0f5e 2868 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND_HDR))
d62a17ae 2869 zlog_debug("Quit to send LSAck to neighbor %s state %s",
2870 on->name,
2871 ospf6_neighbor_state_str[on->state]);
cc9f21da 2872 return;
d62a17ae 2873 }
2874
2875 /* if we have nothing to send, return */
2876 if (on->lsack_list->count == 0)
cc9f21da 2877 return;
d62a17ae 2878
dd784cf9
PR		 2879 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2880 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSACK, on->ospf6_if, op->s);
d62a17ae 2881
dd784cf9 2882 length += ospf6_make_lsack_neighbor(on, &op);
d62a17ae 2883
dd784cf9
PR		 2884 if (length == OSPF6_HEADER_SIZE) {
2885 ospf6_packet_free(op);
cc9f21da 2886 return;
d62a17ae 2887 }
2888
dd784cf9
PR		 2889 /* Fill OSPF header. */
2890 ospf6_fill_header(on->ospf6_if, op->s, length);
43855e3d 2891
dd784cf9
PR		 2892 /* Set packet length, dst and queue to FIFO. */
2893 op->length = length;
2894 op->dst = on->linklocal_addr;
6cb85350 2895 ospf6_fill_hdr_checksum(on->ospf6_if, op);
dd784cf9
PR		 2896 ospf6_packet_add(on->ospf6_if, op);
2897 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
d62a17ae 2898
2899 if (on->lsack_list->count > 0)
2900 thread_add_event(master, ospf6_lsack_send_neighbor, on, 0,
2901 &on->thread_send_lsack);
718e3744 2902}
2903
dd784cf9
PR		 2904static uint16_t ospf6_make_lsack_interface(struct ospf6_interface *oi,
2905 struct ospf6_packet *op)
2906{
2907 uint16_t length = 0;
2908 struct ospf6_lsa *lsa, *lsanext;
2909
2910 for (ALL_LSDB(oi->lsack_list, lsa, lsanext)) {
2911 if ((length + sizeof(struct ospf6_lsa_header)
2912 + OSPF6_HEADER_SIZE)
2913 > ospf6_packet_max(oi)) {
2914 /* if we run out of packet size/space here,
2915 better to try again soon. */
2916 THREAD_OFF(oi->thread_send_lsack);
2917 thread_add_event(master, ospf6_lsack_send_interface, oi,
2918 0, &oi->thread_send_lsack);
2919
2920 ospf6_lsa_unlock(lsa);
2921 if (lsanext)
2922 ospf6_lsa_unlock(lsanext);
2923 break;
2924 }
2925 ospf6_lsa_age_update_to_send(lsa, oi->transdelay);
2926 stream_put(op->s, lsa->header, sizeof(struct ospf6_lsa_header));
2927 length += sizeof(struct ospf6_lsa_header);
2928
2929 assert(lsa->lock == 2);
2930 ospf6_lsdb_remove(lsa, oi->lsack_list);
2931 }
2932 return length;
2933}
2934
cc9f21da 2935void ospf6_lsack_send_interface(struct thread *thread)
718e3744 2936{
d62a17ae 2937 struct ospf6_interface *oi;
dd784cf9
PR		 2938 struct ospf6_packet *op;
2939 uint16_t length = OSPF6_HEADER_SIZE;
d62a17ae 2940
2941 oi = (struct ospf6_interface *)THREAD_ARG(thread);
d62a17ae 2942
2943 if (oi->state <= OSPF6_INTERFACE_WAITING) {
f44d0f5e 2944 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND_HDR))
d62a17ae 2945 zlog_debug(
2946 "Quit to send LSAck to interface %s state %s",
2947 oi->interface->name,
2948 ospf6_interface_state_str[oi->state]);
cc9f21da 2949 return;
d62a17ae 2950 }
2951
2952 /* if we have nothing to send, return */
2953 if (oi->lsack_list->count == 0)
cc9f21da 2954 return;
d62a17ae 2955
dd784cf9
PR		 2956 op = ospf6_packet_new(oi->ifmtu);
2957 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSACK, oi, op->s);
d62a17ae 2958
dd784cf9 2959 length += ospf6_make_lsack_interface(oi, op);
d62a17ae 2960
dd784cf9
PR		 2961 if (length == OSPF6_HEADER_SIZE) {
2962 ospf6_packet_free(op);
cc9f21da 2963 return;
d62a17ae 2964 }
dd784cf9
PR		 2965 /* Fill OSPF header. */
2966 ospf6_fill_header(oi, op->s, length);
d62a17ae 2967
dd784cf9
PR		 2968 /* Set packet length, dst and queue to FIFO. */
2969 op->length = length;
2970 if ((oi->state == OSPF6_INTERFACE_POINTTOPOINT)
2971 || (oi->state == OSPF6_INTERFACE_DR)
2972 || (oi->state == OSPF6_INTERFACE_BDR))
2973 op->dst = allspfrouters6;
2974 else
2975 op->dst = alldrouters6;
d62a17ae 2976
6cb85350 2977 ospf6_fill_hdr_checksum(oi, op);
dd784cf9
PR		 2978 ospf6_packet_add(oi, op);
2979 OSPF6_MESSAGE_WRITE_ON(oi);
d62a17ae 2980
2981 if (oi->lsack_list->count > 0)
2982 thread_add_event(master, ospf6_lsack_send_interface, oi, 0,
2983 &oi->thread_send_lsack);
718e3744 2984}
2985
508e53e2 2986/* Commands */
f44d0f5e 2987DEFUN(debug_ospf6_message, debug_ospf6_message_cmd,
2988 "debug ospf6 message <unknown|hello|dbdesc|lsreq|lsupdate|lsack|all> [<send|recv|send-hdr|recv-hdr>]",
2989 DEBUG_STR OSPF6_STR
2990 "Debug OSPFv3 message\n"
2991 "Debug Unknown message\n"
2992 "Debug Hello message\n"
2993 "Debug Database Description message\n"
2994 "Debug Link State Request message\n"
2995 "Debug Link State Update message\n"
2996 "Debug Link State Acknowledgement message\n"
2997 "Debug All message\n"
2998 "Debug only sending message, entire packet\n"
2999 "Debug only receiving message, entire packet\n"
3000 "Debug only sending message, header only\n"
3001 "Debug only receiving message, header only\n")
718e3744 3002{
d62a17ae 3003 int idx_packet = 3;
3004 int idx_send_recv = 4;
3005 unsigned char level = 0;
3006 int type = 0;
3007 int i;
3008
3009 /* check type */
3010 if (!strncmp(argv[idx_packet]->arg, "u", 1))
3011 type = OSPF6_MESSAGE_TYPE_UNKNOWN;
3012 else if (!strncmp(argv[idx_packet]->arg, "h", 1))
3013 type = OSPF6_MESSAGE_TYPE_HELLO;
3014 else if (!strncmp(argv[idx_packet]->arg, "d", 1))
3015 type = OSPF6_MESSAGE_TYPE_DBDESC;
3016 else if (!strncmp(argv[idx_packet]->arg, "lsr", 3))
3017 type = OSPF6_MESSAGE_TYPE_LSREQ;
3018 else if (!strncmp(argv[idx_packet]->arg, "lsu", 3))
3019 type = OSPF6_MESSAGE_TYPE_LSUPDATE;
3020 else if (!strncmp(argv[idx_packet]->arg, "lsa", 3))
3021 type = OSPF6_MESSAGE_TYPE_LSACK;
3022 else if (!strncmp(argv[idx_packet]->arg, "a", 1))
3023 type = OSPF6_MESSAGE_TYPE_ALL;
3024
3025 if (argc == 4)
3026 level = OSPF6_DEBUG_MESSAGE_SEND | OSPF6_DEBUG_MESSAGE_RECV;
f44d0f5e 3027 else if (!strncmp(argv[idx_send_recv]->arg, "send-h", 6))
3028 level = OSPF6_DEBUG_MESSAGE_SEND_HDR;
d62a17ae 3029 else if (!strncmp(argv[idx_send_recv]->arg, "s", 1))
3030 level = OSPF6_DEBUG_MESSAGE_SEND;
f44d0f5e 3031 else if (!strncmp(argv[idx_send_recv]->arg, "recv-h", 6))
3032 level = OSPF6_DEBUG_MESSAGE_RECV_HDR;
d62a17ae 3033 else if (!strncmp(argv[idx_send_recv]->arg, "r", 1))
3034 level = OSPF6_DEBUG_MESSAGE_RECV;
3035
3036 if (type == OSPF6_MESSAGE_TYPE_ALL) {
3037 for (i = 0; i < 6; i++)
3038 OSPF6_DEBUG_MESSAGE_ON(i, level);
3039 } else
3040 OSPF6_DEBUG_MESSAGE_ON(type, level);
3041
3042 return CMD_SUCCESS;
718e3744 3043}
3044
f44d0f5e 3045DEFUN(no_debug_ospf6_message, no_debug_ospf6_message_cmd,
3046 "no debug ospf6 message <unknown|hello|dbdesc|lsreq|lsupdate|lsack|all> [<send|recv|send-hdr|recv-hdr>]",
3047 NO_STR DEBUG_STR OSPF6_STR
3048 "Debug OSPFv3 message\n"
3049 "Debug Unknown message\n"
3050 "Debug Hello message\n"
3051 "Debug Database Description message\n"
3052 "Debug Link State Request message\n"
3053 "Debug Link State Update message\n"
3054 "Debug Link State Acknowledgement message\n"
3055 "Debug All message\n"
3056 "Debug only sending message, entire pkt\n"
3057 "Debug only receiving message, entire pkt\n"
3058 "Debug only sending message, header only\n"
3059 "Debug only receiving message, header only\n")
508e53e2 3060{
d62a17ae 3061 int idx_packet = 4;
3062 int idx_send_recv = 5;
3063 unsigned char level = 0;
3064 int type = 0;
3065 int i;
3066
3067 /* check type */
3068 if (!strncmp(argv[idx_packet]->arg, "u", 1))
3069 type = OSPF6_MESSAGE_TYPE_UNKNOWN;
3070 else if (!strncmp(argv[idx_packet]->arg, "h", 1))
3071 type = OSPF6_MESSAGE_TYPE_HELLO;
3072 else if (!strncmp(argv[idx_packet]->arg, "d", 1))
3073 type = OSPF6_MESSAGE_TYPE_DBDESC;
3074 else if (!strncmp(argv[idx_packet]->arg, "lsr", 3))
3075 type = OSPF6_MESSAGE_TYPE_LSREQ;
3076 else if (!strncmp(argv[idx_packet]->arg, "lsu", 3))
3077 type = OSPF6_MESSAGE_TYPE_LSUPDATE;
3078 else if (!strncmp(argv[idx_packet]->arg, "lsa", 3))
3079 type = OSPF6_MESSAGE_TYPE_LSACK;
3080 else if (!strncmp(argv[idx_packet]->arg, "a", 1))
3081 type = OSPF6_MESSAGE_TYPE_ALL;
3082
3083 if (argc == 5)
f44d0f5e 3084 level = OSPF6_DEBUG_MESSAGE_SEND | OSPF6_DEBUG_MESSAGE_RECV
3085 | OSPF6_DEBUG_MESSAGE_SEND_HDR
3086 | OSPF6_DEBUG_MESSAGE_RECV_HDR;
3087 else if (!strncmp(argv[idx_send_recv]->arg, "send-h", 6))
3088 level = OSPF6_DEBUG_MESSAGE_SEND_HDR;
d62a17ae 3089 else if (!strncmp(argv[idx_send_recv]->arg, "s", 1))
3090 level = OSPF6_DEBUG_MESSAGE_SEND;
f44d0f5e 3091 else if (!strncmp(argv[idx_send_recv]->arg, "recv-h", 6))
3092 level = OSPF6_DEBUG_MESSAGE_RECV_HDR;
d62a17ae 3093 else if (!strncmp(argv[idx_send_recv]->arg, "r", 1))
3094 level = OSPF6_DEBUG_MESSAGE_RECV;
3095
3096 if (type == OSPF6_MESSAGE_TYPE_ALL) {
3097 for (i = 0; i < 6; i++)
3098 OSPF6_DEBUG_MESSAGE_OFF(i, level);
3099 } else
3100 OSPF6_DEBUG_MESSAGE_OFF(type, level);
3101
3102 return CMD_SUCCESS;
718e3744 3103}
3104
508e53e2 3105
d62a17ae 3106int config_write_ospf6_debug_message(struct vty *vty)
718e3744 3107{
d62a17ae 3108 const char *type_str[] = {"unknown", "hello", "dbdesc",
3109 "lsreq", "lsupdate", "lsack"};
f44d0f5e 3110 unsigned char s = 0, r = 0, sh = 0, rh = 0;
d62a17ae 3111 int i;
3112
3113 for (i = 0; i < 6; i++) {
f44d0f5e 3114 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND))
d62a17ae 3115 s |= 1 << i;
f44d0f5e 3116 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV))
d62a17ae 3117 r |= 1 << i;
3118 }
3119
f44d0f5e 3120 for (i = 0; i < 6; i++) {
3121 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND_HDR))
3122 sh |= 1 << i;
3123 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV_HDR))
3124 rh |= 1 << i;
3125 }
3126
d62a17ae 3127 if (s == 0x3f && r == 0x3f) {
3128 vty_out(vty, "debug ospf6 message all\n");
3129 return 0;
3130 }
3131
3132 if (s == 0x3f && r == 0) {
3133 vty_out(vty, "debug ospf6 message all send\n");
3134 return 0;
3135 } else if (s == 0 && r == 0x3f) {
3136 vty_out(vty, "debug ospf6 message all recv\n");
3137 return 0;
3138 }
3139
f44d0f5e 3140 if (sh == 0x3f && rh == 0) {
3141 vty_out(vty, "debug ospf6 message all send-hdr\n");
3142 return 0;
3143 } else if (sh == 0 && rh == 0x3f) {
3144 vty_out(vty, "debug ospf6 message all recv-hdr\n");
3145 return 0;
3146 }
3147
d62a17ae 3148 /* Unknown message is logged by default */
3149 if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, SEND)
3150 && !IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV))
3151 vty_out(vty, "no debug ospf6 message unknown\n");
3152 else if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, SEND))
3153 vty_out(vty, "no debug ospf6 message unknown send\n");
3154 else if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV))
3155 vty_out(vty, "no debug ospf6 message unknown recv\n");
3156
3157 for (i = 1; i < 6; i++) {
f44d0f5e 3158 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND)
c9ac777a 3159 && IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV)) {
d62a17ae 3160 vty_out(vty, "debug ospf6 message %s\n", type_str[i]);
c9ac777a
IR		 3161 continue;
3162 }
3163
3164 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND))
d62a17ae 3165 vty_out(vty, "debug ospf6 message %s send\n",
3166 type_str[i]);
c9ac777a
IR		 3167 else if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND_HDR))
3168 vty_out(vty, "debug ospf6 message %s send-hdr\n",
d62a17ae 3169 type_str[i]);
c9ac777a
IR		 3170
3171 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV))
3172 vty_out(vty, "debug ospf6 message %s recv\n",
f44d0f5e 3173 type_str[i]);
3174 else if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV_HDR))
3175 vty_out(vty, "debug ospf6 message %s recv-hdr\n",
3176 type_str[i]);
d62a17ae 3177 }
3178
3179 return 0;
718e3744 3180}
3181
d62a17ae 3182void install_element_ospf6_debug_message(void)
508e53e2 3183{
d62a17ae 3184 install_element(ENABLE_NODE, &debug_ospf6_message_cmd);
3185 install_element(ENABLE_NODE, &no_debug_ospf6_message_cmd);
3186 install_element(CONFIG_NODE, &debug_ospf6_message_cmd);
3187 install_element(CONFIG_NODE, &no_debug_ospf6_message_cmd);
508e53e2 3188}
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