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Merge pull request #12075 from donaldsharp/highline
[mirror_frr.git] / ospf6d / ospf6_message.c
CommitLineData
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;
3d968031
PR		 2089 struct ospf6_header *oh;
2090 struct ospf6_packet *op;
2091 struct listnode *node;
3d968031
PR		 2092 struct iovec iovector[2];
2093 int pkt_count = 0;
2094 int len;
bb382e24
PR		 2095 int64_t latency = 0;
2096 struct timeval timestamp;
42bfee18 2097 uint16_t at_len = 0;
3d968031
PR		 2098
2099 if (ospf6->fd < 0) {
2100 zlog_warn("ospf6_write failed to send, fd %d", ospf6->fd);
cc9f21da 2101 return;
3d968031
PR		 2102 }
2103
2104 node = listhead(ospf6->oi_write_q);
2105 assert(node);
2106 oi = listgetdata(node);
2107
4e5c95be 2108 while ((pkt_count < ospf6->write_oi_count) && oi) {
3d968031
PR		 2109 op = ospf6_fifo_head(oi->obuf);
2110 assert(op);
2111 assert(op->length >= OSPF6_HEADER_SIZE);
2112
2113 iovector[0].iov_base = (caddr_t)stream_pnt(op->s);
2114 iovector[0].iov_len = op->length;
2115 iovector[1].iov_base = NULL;
2116 iovector[1].iov_len = 0;
2117
2118 oh = (struct ospf6_header *)STREAM_DATA(op->s);
2119
6cb85350
AR		 2120 if (oi->at_data.flags != 0) {
2121 at_len = ospf6_auth_len_get(oi);
2122 if (at_len) {
2123 iovector[0].iov_len =
2124 ntohs(oh->length) + at_len;
2125 ospf6_auth_digest_send(oi->linklocal_addr, oi,
2126 oh, at_len,
2127 iovector[0].iov_len);
2128 } else {
2129 iovector[0].iov_len = ntohs(oh->length);
2130 }
2131 } else {
2132 iovector[0].iov_len = ntohs(oh->length);
2133 }
2134
3d968031
PR		 2135 len = ospf6_sendmsg(oi->linklocal_addr, &op->dst,
2136 oi->interface->ifindex, iovector,
2137 ospf6->fd);
6cb85350
AR		 2138
2139 if (len != (op->length + (int)at_len))
3d968031
PR		 2140 flog_err(EC_LIB_DEVELOPMENT,
2141 "Could not send entire message");
2142
a91f9d69 2143 if (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND_HDR)) {
3d968031 2144 zlog_debug("%s send on %s",
6cb85350 2145 ospf6_message_type(oh->type),
3d968031 2146 oi->interface->name);
779d9722
PR		 2147 zlog_debug(" src: %pI6", oi->linklocal_addr);
2148 zlog_debug(" dst: %pI6", &op->dst);
a91f9d69
PR		 2149 switch (oh->type) {
2150 case OSPF6_MESSAGE_TYPE_HELLO:
2151 ospf6_hello_print(oh, OSPF6_ACTION_SEND);
2152 break;
2153 case OSPF6_MESSAGE_TYPE_DBDESC:
2154 ospf6_dbdesc_print(oh, OSPF6_ACTION_SEND);
2155 break;
2156 case OSPF6_MESSAGE_TYPE_LSREQ:
2157 ospf6_lsreq_print(oh, OSPF6_ACTION_SEND);
2158 break;
2159 case OSPF6_MESSAGE_TYPE_LSUPDATE:
2160 ospf6_lsupdate_print(oh, OSPF6_ACTION_SEND);
2161 break;
2162 case OSPF6_MESSAGE_TYPE_LSACK:
2163 ospf6_lsack_print(oh, OSPF6_ACTION_SEND);
2164 break;
2165 default:
2166 zlog_debug("Unknown message");
2167 assert(0);
2168 break;
2169 }
3d968031 2170 }
d62a17ae 2171 switch (oh->type) {
2172 case OSPF6_MESSAGE_TYPE_HELLO:
bb382e24
PR		 2173 monotime(&timestamp);
2174 if (oi->hello_out)
2175 latency = monotime_since(&oi->last_hello, NULL)
0dd5ec12
PR		 2176 - ((int64_t)oi->hello_interval
2177 * 1000000);
bb382e24
PR		 2178
2179 /* log if latency exceeds the hello period */
0dd5ec12 2180 if (latency > ((int64_t)oi->hello_interval * 1000000))
bb382e24
PR		 2181 zlog_warn("%s hello TX high latency %" PRId64
2182 "us.",
2183 __func__, latency);
2184 oi->last_hello = timestamp;
3d968031 2185 oi->hello_out++;
d62a17ae 2186 break;
2187 case OSPF6_MESSAGE_TYPE_DBDESC:
3d968031 2188 oi->db_desc_out++;
d62a17ae 2189 break;
2190 case OSPF6_MESSAGE_TYPE_LSREQ:
3d968031 2191 oi->ls_req_out++;
d62a17ae 2192 break;
2193 case OSPF6_MESSAGE_TYPE_LSUPDATE:
3d968031 2194 oi->ls_upd_out++;
d62a17ae 2195 break;
2196 case OSPF6_MESSAGE_TYPE_LSACK:
3d968031 2197 oi->ls_ack_out++;
d62a17ae 2198 break;
2199 default:
2200 zlog_debug("Unknown message");
2201 assert(0);
2202 break;
2203 }
6cb85350
AR		 2204
2205 if ((oi->at_data.flags != 0) &&
2206 (IS_OSPF6_DEBUG_MESSAGE(oh->type, SEND_HDR)) &&
2207 (IS_OSPF6_DEBUG_AUTH_TX))
2208 ospf6_auth_hdr_dump_send(oh, iovector[0].iov_len);
2209
2210 /* initialize at_len to 0 for next packet */
2211 at_len = 0;
2212
3d968031
PR		 2213 /* Now delete packet from queue. */
2214 ospf6_packet_delete(oi);
2215
2216 /* Move this interface to the tail of write_q to
2217 serve everyone in a round robin fashion */
2218 list_delete_node(ospf6->oi_write_q, node);
2219 if (ospf6_fifo_head(oi->obuf) == NULL) {
2220 oi->on_write_q = 0;
3d968031
PR		 2221 oi = NULL;
2222 } else {
2223 listnode_add(ospf6->oi_write_q, oi);
2224 }
d62a17ae 2225
3d968031
PR		 2226 /* Setup to service from the head of the queue again */
2227 if (!list_isempty(ospf6->oi_write_q)) {
2228 node = listhead(ospf6->oi_write_q);
2229 oi = listgetdata(node);
2230 }
7df1f362 2231 }
718e3744 2232
3d968031
PR		 2233 /* If packets still remain in queue, call write thread. */
2234 if (!list_isempty(ospf6->oi_write_q))
2235 thread_add_write(master, ospf6_write, ospf6, ospf6->fd,
2236 &ospf6->t_write);
681b84e8
DT		 2237}
2238
cc9f21da 2239void ospf6_hello_send(struct thread *thread)
718e3744 2240{
d62a17ae 2241 struct ospf6_interface *oi;
3d968031
PR		 2242 struct ospf6_packet *op;
2243 uint16_t length = OSPF6_HEADER_SIZE;
d62a17ae 2244
2245 oi = (struct ospf6_interface *)THREAD_ARG(thread);
d62a17ae 2246
2247 if (oi->state <= OSPF6_INTERFACE_DOWN) {
f44d0f5e 2248 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_HELLO, SEND_HDR))
d62a17ae 2249 zlog_debug("Unable to send Hello on down interface %s",
2250 oi->interface->name);
cc9f21da 2251 return;
d62a17ae 2252 }
2253
3d968031 2254 op = ospf6_packet_new(oi->ifmtu);
d62a17ae 2255
3d968031 2256 ospf6_make_header(OSPF6_MESSAGE_TYPE_HELLO, oi, op->s);
d62a17ae 2257
3d968031
PR		 2258 /* Prepare OSPF Hello body */
2259 length += ospf6_make_hello(oi, op->s);
2260 if (length == OSPF6_HEADER_SIZE) {
2261 /* Hello overshooting MTU */
2262 ospf6_packet_free(op);
cc9f21da 2263 return;
3d968031 2264 }
d62a17ae 2265
3d968031
PR		 2266 /* Fill OSPF header. */
2267 ospf6_fill_header(oi, op->s, length);
d62a17ae 2268
3d968031
PR		 2269 /* Set packet length. */
2270 op->length = length;
d62a17ae 2271
3d968031 2272 op->dst = allspfrouters6;
d62a17ae 2273
6cb85350
AR		 2274 ospf6_fill_hdr_checksum(oi, op);
2275
3d968031
PR		 2276 /* Add packet to the top of the interface output queue, so that they
2277 * can't get delayed by things like long queues of LS Update packets
2278 */
2279 ospf6_packet_add_top(oi, op);
d62a17ae 2280
3d968031
PR		 2281 /* set next thread */
2282 thread_add_timer(master, ospf6_hello_send, oi, oi->hello_interval,
2283 &oi->thread_send_hello);
d62a17ae 2284
d6a39b53 2285 OSPF6_MESSAGE_WRITE_ON(oi);
718e3744 2286}
2287
d6a39b53 2288static uint16_t ospf6_make_dbdesc(struct ospf6_neighbor *on, struct stream *s)
718e3744 2289{
d6a39b53 2290 uint16_t length = OSPF6_DB_DESC_MIN_SIZE;
2e37407f 2291 struct ospf6_lsa *lsa, *lsanext;
6cb85350
AR		 2292 uint8_t options1 = on->ospf6_if->area->options[1];
2293
2294 if (on->ospf6_if->at_data.flags != 0)
2295 options1 |= OSPF6_OPT_AT;
d62a17ae 2296
2297 /* if this is initial one, initialize sequence number for DbDesc */
2298 if (CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_IBIT)
2299 && (on->dbdesc_seqnum == 0)) {
2300 on->dbdesc_seqnum = monotime(NULL);
2301 }
2302
d6a39b53
PR		 2303 /* reserved */
2304 stream_putc(s, 0); /* reserved 1 */
2305 stream_putc(s, on->ospf6_if->area->options[0]);
6cb85350 2306 stream_putc(s, options1);
d6a39b53
PR		 2307 stream_putc(s, on->ospf6_if->area->options[2]);
2308 stream_putw(s, on->ospf6_if->ifmtu);
2309 stream_putc(s, 0); /* reserved 2 */
2310 stream_putc(s, on->dbdesc_bits);
2311 stream_putl(s, on->dbdesc_seqnum);
d62a17ae 2312
2313 /* if this is not initial one, set LSA headers in dbdesc */
d62a17ae 2314 if (!CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_IBIT)) {
2e37407f 2315 for (ALL_LSDB(on->dbdesc_list, lsa, lsanext)) {
d62a17ae 2316 ospf6_lsa_age_update_to_send(lsa,
2317 on->ospf6_if->transdelay);
2318
2319 /* MTU check */
d6a39b53
PR		 2320 if ((length + sizeof(struct ospf6_lsa_header)
2321 + OSPF6_HEADER_SIZE)
d62a17ae 2322 > ospf6_packet_max(on->ospf6_if)) {
ccf260c4 2323 ospf6_lsa_unlock(lsa);
2324 if (lsanext)
2325 ospf6_lsa_unlock(lsanext);
d62a17ae 2326 break;
2327 }
d6a39b53
PR		 2328 stream_put(s, lsa->header,
2329 sizeof(struct ospf6_lsa_header));
2330 length += sizeof(struct ospf6_lsa_header);
d62a17ae 2331 }
2332 }
d6a39b53
PR		 2333 return length;
2334}
d62a17ae 2335
cc9f21da 2336void ospf6_dbdesc_send(struct thread *thread)
d6a39b53
PR		 2337{
2338 struct ospf6_neighbor *on;
2339 uint16_t length = OSPF6_HEADER_SIZE;
2340 struct ospf6_packet *op;
d62a17ae 2341
d6a39b53 2342 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
d6a39b53
PR		 2343
2344 if (on->state < OSPF6_NEIGHBOR_EXSTART) {
2345 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_DBDESC, SEND))
2346 zlog_debug(
2347 "Quit to send DbDesc to neighbor %s state %s",
2348 on->name, ospf6_neighbor_state_str[on->state]);
cc9f21da 2349 return;
d6a39b53
PR		 2350 }
2351
2352 /* set next thread if master */
2353 if (CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT))
2354 thread_add_timer(master, ospf6_dbdesc_send, on,
2355 on->ospf6_if->rxmt_interval,
2356 &on->thread_send_dbdesc);
d62a17ae 2357
d6a39b53
PR		 2358 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2359 ospf6_make_header(OSPF6_MESSAGE_TYPE_DBDESC, on->ospf6_if, op->s);
d62a17ae 2360
d6a39b53
PR		 2361 length += ospf6_make_dbdesc(on, op->s);
2362 ospf6_fill_header(on->ospf6_if, op->s, length);
2363
2364 /* Set packet length. */
2365 op->length = length;
d62a17ae 2366
2367 if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
d6a39b53 2368 op->dst = allspfrouters6;
d62a17ae 2369 else
d6a39b53 2370 op->dst = on->linklocal_addr;
d62a17ae 2371
6cb85350
AR		 2372 ospf6_fill_hdr_checksum(on->ospf6_if, op);
2373
d6a39b53 2374 ospf6_packet_add(on->ospf6_if, op);
43855e3d 2375
d6a39b53 2376 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
718e3744 2377}
2378
cc9f21da 2379void ospf6_dbdesc_send_newone(struct thread *thread)
718e3744 2380{
d62a17ae 2381 struct ospf6_neighbor *on;
2e37407f 2382 struct ospf6_lsa *lsa, *lsanext;
d62a17ae 2383 unsigned int size = 0;
2384
2385 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
2386 ospf6_lsdb_remove_all(on->dbdesc_list);
2387
2388 /* move LSAs from summary_list to dbdesc_list (within neighbor
2389 structure)
2390 so that ospf6_send_dbdesc () can send those LSAs */
2391 size = sizeof(struct ospf6_lsa_header) + sizeof(struct ospf6_dbdesc);
2e37407f 2392 for (ALL_LSDB(on->summary_list, lsa, lsanext)) {
bac66c5c 2393 /* if stub area then don't advertise AS-External LSAs */
4f785c07
RZ		 2394 if ((IS_AREA_STUB(on->ospf6_if->area)
2395 || IS_AREA_NSSA(on->ospf6_if->area))
bac66c5c 2396 && ntohs(lsa->header->type) == OSPF6_LSTYPE_AS_EXTERNAL) {
2397 ospf6_lsdb_remove(lsa, on->summary_list);
2398 continue;
2399 }
2400
d62a17ae 2401 if (size + sizeof(struct ospf6_lsa_header)
2402 > ospf6_packet_max(on->ospf6_if)) {
ccf260c4 2403 ospf6_lsa_unlock(lsa);
2404 if (lsanext)
2405 ospf6_lsa_unlock(lsanext);
d62a17ae 2406 break;
2407 }
2408
2409 ospf6_lsdb_add(ospf6_lsa_copy(lsa), on->dbdesc_list);
2410 ospf6_lsdb_remove(lsa, on->summary_list);
2411 size += sizeof(struct ospf6_lsa_header);
2412 }
2413
2414 if (on->summary_list->count == 0)
2415 UNSET_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT);
2416
2417 /* If slave, More bit check must be done here */
2418 if (!CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MSBIT) && /* Slave */
2419 !CHECK_FLAG(on->dbdesc_last.bits, OSPF6_DBDESC_MBIT)
2420 && !CHECK_FLAG(on->dbdesc_bits, OSPF6_DBDESC_MBIT))
9318fc6a
DS		 2421 thread_add_event(master, exchange_done, on, 0,
2422 &on->thread_exchange_done);
d62a17ae 2423
2424 thread_execute(master, ospf6_dbdesc_send, on, 0);
508e53e2 2425}
718e3744 2426
571eed23
PR		 2427static uint16_t ospf6_make_lsreq(struct ospf6_neighbor *on, struct stream *s)
2428{
2429 uint16_t length = 0;
2430 struct ospf6_lsa *lsa, *lsanext, *last_req = NULL;
2431
2432 for (ALL_LSDB(on->request_list, lsa, lsanext)) {
2433 if ((length + OSPF6_HEADER_SIZE)
2434 > ospf6_packet_max(on->ospf6_if)) {
2435 ospf6_lsa_unlock(lsa);
2436 if (lsanext)
2437 ospf6_lsa_unlock(lsanext);
2438 break;
2439 }
2440 stream_putw(s, 0); /* reserved */
2441 stream_putw(s, ntohs(lsa->header->type));
2442 stream_putl(s, ntohl(lsa->header->id));
2443 stream_putl(s, ntohl(lsa->header->adv_router));
2444 length += sizeof(struct ospf6_lsreq_entry);
2445 last_req = lsa;
2446 }
2447
2448 if (last_req != NULL) {
2449 if (on->last_ls_req != NULL)
2450 on->last_ls_req = ospf6_lsa_unlock(on->last_ls_req);
2451
2452 ospf6_lsa_lock(last_req);
2453 on->last_ls_req = last_req;
2454 }
2455
2456 return length;
2457}
2458
dd784cf9
PR		 2459static uint16_t ospf6_make_lsack_neighbor(struct ospf6_neighbor *on,
2460 struct ospf6_packet **op)
2461{
2462 uint16_t length = 0;
2463 struct ospf6_lsa *lsa, *lsanext;
2464 int lsa_cnt = 0;
2465
2466 for (ALL_LSDB(on->lsack_list, lsa, lsanext)) {
2467 if ((length + sizeof(struct ospf6_lsa_header)
2468 + OSPF6_HEADER_SIZE)
2469 > ospf6_packet_max(on->ospf6_if)) {
2470 /* if we run out of packet size/space here,
2471 better to try again soon. */
2472 if (lsa_cnt) {
2473 ospf6_fill_header(on->ospf6_if, (*op)->s,
2474 length + OSPF6_HEADER_SIZE);
2475
2476 (*op)->length = length + OSPF6_HEADER_SIZE;
2477 (*op)->dst = on->linklocal_addr;
6cb85350 2478 ospf6_fill_hdr_checksum(on->ospf6_if, *op);
dd784cf9
PR		 2479 ospf6_packet_add(on->ospf6_if, *op);
2480 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
2481 /* new packet */
2482 *op = ospf6_packet_new(on->ospf6_if->ifmtu);
2483 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSACK,
2484 on->ospf6_if, (*op)->s);
2485 length = 0;
2486 lsa_cnt = 0;
2487 }
2488 }
2489 ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay);
2490 stream_put((*op)->s, lsa->header,
2491 sizeof(struct ospf6_lsa_header));
2492 length += sizeof(struct ospf6_lsa_header);
2493
2494 assert(lsa->lock == 2);
2495 ospf6_lsdb_remove(lsa, on->lsack_list);
2496 lsa_cnt++;
2497 }
2498 return length;
2499}
2500
cc9f21da 2501void ospf6_lsreq_send(struct thread *thread)
508e53e2 2502{
d62a17ae 2503 struct ospf6_neighbor *on;
571eed23
PR		 2504 struct ospf6_packet *op;
2505 uint16_t length = OSPF6_HEADER_SIZE;
d62a17ae 2506
2507 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
d62a17ae 2508
2509 /* LSReq will be sent only in ExStart or Loading */
2510 if (on->state != OSPF6_NEIGHBOR_EXCHANGE
2511 && on->state != OSPF6_NEIGHBOR_LOADING) {
f44d0f5e 2512 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSREQ, SEND_HDR))
d62a17ae 2513 zlog_debug("Quit to send LSReq to neighbor %s state %s",
2514 on->name,
2515 ospf6_neighbor_state_str[on->state]);
cc9f21da 2516 return;
d62a17ae 2517 }
2518
2519 /* schedule loading_done if request list is empty */
2520 if (on->request_list->count == 0) {
2521 thread_add_event(master, loading_done, on, 0, NULL);
cc9f21da 2522 return;
d62a17ae 2523 }
2524
571eed23
PR		 2525 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2526 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSREQ, on->ospf6_if, op->s);
d62a17ae 2527
571eed23 2528 length += ospf6_make_lsreq(on, op->s);
744ba569 2529
571eed23
PR		 2530 if (length == OSPF6_HEADER_SIZE) {
2531 /* Hello overshooting MTU */
2532 ospf6_packet_free(op);
cc9f21da 2533 return;
d62a17ae 2534 }
2535
571eed23
PR		 2536 /* Fill OSPF header. */
2537 ospf6_fill_header(on->ospf6_if, op->s, length);
d62a17ae 2538
dd784cf9 2539 /* Set packet length */
571eed23 2540 op->length = length;
43855e3d 2541
d62a17ae 2542 if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
571eed23 2543 op->dst = allspfrouters6;
d62a17ae 2544 else
571eed23
PR		 2545 op->dst = on->linklocal_addr;
2546
6cb85350 2547 ospf6_fill_hdr_checksum(on->ospf6_if, op);
571eed23
PR		 2548 ospf6_packet_add(on->ospf6_if, op);
2549
2550 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
d62a17ae 2551
2552 /* set next thread */
2553 if (on->request_list->count != 0) {
d62a17ae 2554 thread_add_timer(master, ospf6_lsreq_send, on,
2555 on->ospf6_if->rxmt_interval,
2556 &on->thread_send_lsreq);
2557 }
718e3744 2558}
2559
1ba43456
CS		 2560static void ospf6_send_lsupdate(struct ospf6_neighbor *on,
2561 struct ospf6_interface *oi,
432b7daf 2562 struct ospf6_packet *op)
1ba43456
CS		 2563{
2564
2565 if (on) {
43855e3d 2566
996c9314
LB		 2567 if ((on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
2568 || (on->ospf6_if->state == OSPF6_INTERFACE_DR)
432b7daf
PR		 2569 || (on->ospf6_if->state == OSPF6_INTERFACE_BDR))
2570 op->dst = allspfrouters6;
2571 else
2572 op->dst = on->linklocal_addr;
2573 oi = on->ospf6_if;
1ba43456 2574 } else if (oi) {
996c9314
LB		 2575 if ((oi->state == OSPF6_INTERFACE_POINTTOPOINT)
2576 || (oi->state == OSPF6_INTERFACE_DR)
432b7daf
PR		 2577 || (oi->state == OSPF6_INTERFACE_BDR))
2578 op->dst = allspfrouters6;
2579 else
2580 op->dst = alldrouters6;
2581 }
2582 if (oi) {
6cb85350 2583 ospf6_fill_hdr_checksum(oi, op);
432b7daf 2584 ospf6_packet_add(oi, op);
7359e9ba
S		 2585 /* If ospf instance is being deleted, send the packet
2586 * immediately
2587 */
2588 if ((oi->area == NULL) || (oi->area->ospf6 == NULL))
2589 return;
2590 if (oi->area->ospf6->inst_shutdown) {
2591 if (oi->on_write_q == 0) {
2592 listnode_add(oi->area->ospf6->oi_write_q, oi);
2593 oi->on_write_q = 1;
2594 }
2595 thread_execute(master, ospf6_write, oi->area->ospf6, 0);
2596 } else
2597 OSPF6_MESSAGE_WRITE_ON(oi);
432b7daf
PR		 2598 }
2599}
2600
2601static uint16_t ospf6_make_lsupdate_list(struct ospf6_neighbor *on,
2602 struct ospf6_packet **op, int *lsa_cnt)
2603{
2604 uint16_t length = OSPF6_LS_UPD_MIN_SIZE;
2605 struct ospf6_lsa *lsa, *lsanext;
2606
2607 /* skip over fixed header */
2608 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
2609
2610 for (ALL_LSDB(on->lsupdate_list, lsa, lsanext)) {
42bfee18
AR		 2611 if ((length + OSPF6_LSA_SIZE(lsa->header) + OSPF6_HEADER_SIZE) >
2612 ospf6_packet_max(on->ospf6_if)) {
432b7daf
PR		 2613 ospf6_fill_header(on->ospf6_if, (*op)->s,
2614 length + OSPF6_HEADER_SIZE);
2615 (*op)->length = length + OSPF6_HEADER_SIZE;
2616 ospf6_fill_lsupdate_header((*op)->s, *lsa_cnt);
2617 ospf6_send_lsupdate(on, NULL, *op);
2618
2619 /* refresh packet */
2620 *op = ospf6_packet_new(on->ospf6_if->ifmtu);
2621 length = OSPF6_LS_UPD_MIN_SIZE;
2622 *lsa_cnt = 0;
2623 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE,
2624 on->ospf6_if, (*op)->s);
2625 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
1ba43456 2626 }
432b7daf
PR		 2627 ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay);
2628 stream_put((*op)->s, lsa->header, OSPF6_LSA_SIZE(lsa->header));
2629 (*lsa_cnt)++;
2630 length += OSPF6_LSA_SIZE(lsa->header);
2631 assert(lsa->lock == 2);
2632 ospf6_lsdb_remove(lsa, on->lsupdate_list);
1ba43456 2633 }
432b7daf
PR		 2634 return length;
2635}
2636
2637static uint16_t ospf6_make_ls_retrans_list(struct ospf6_neighbor *on,
2638 struct ospf6_packet **op,
2639 int *lsa_cnt)
2640{
2641 uint16_t length = OSPF6_LS_UPD_MIN_SIZE;
2642 struct ospf6_lsa *lsa, *lsanext;
2643
2644 /* skip over fixed header */
2645 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
2646
2647 for (ALL_LSDB(on->retrans_list, lsa, lsanext)) {
42bfee18
AR		 2648 if ((length + OSPF6_LSA_SIZE(lsa->header) + OSPF6_HEADER_SIZE) >
2649 ospf6_packet_max(on->ospf6_if)) {
432b7daf
PR		 2650 ospf6_fill_header(on->ospf6_if, (*op)->s,
2651 length + OSPF6_HEADER_SIZE);
2652 (*op)->length = length + OSPF6_HEADER_SIZE;
2653 ospf6_fill_lsupdate_header((*op)->s, *lsa_cnt);
2654 if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
2655 (*op)->dst = allspfrouters6;
2656 else
2657 (*op)->dst = on->linklocal_addr;
2658
6cb85350 2659 ospf6_fill_hdr_checksum(on->ospf6_if, *op);
432b7daf
PR		 2660 ospf6_packet_add(on->ospf6_if, *op);
2661 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
2662
2663 /* refresh packet */
2664 *op = ospf6_packet_new(on->ospf6_if->ifmtu);
2665 length = OSPF6_LS_UPD_MIN_SIZE;
2666 *lsa_cnt = 0;
2667 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE,
2668 on->ospf6_if, (*op)->s);
2669 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
1ba43456 2670 }
432b7daf
PR		 2671 ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay);
2672 stream_put((*op)->s, lsa->header, OSPF6_LSA_SIZE(lsa->header));
2673 (*lsa_cnt)++;
2674 length += OSPF6_LSA_SIZE(lsa->header);
1ba43456 2675 }
432b7daf 2676 return length;
1ba43456
CS		 2677}
2678
cc9f21da 2679void ospf6_lsupdate_send_neighbor(struct thread *thread)
718e3744 2680{
d62a17ae 2681 struct ospf6_neighbor *on;
432b7daf
PR		 2682 struct ospf6_packet *op;
2683 uint16_t length = OSPF6_HEADER_SIZE;
2684 int lsa_cnt = 0;
d62a17ae 2685
2686 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
d62a17ae 2687
f44d0f5e 2688 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND_HDR))
d62a17ae 2689 zlog_debug("LSUpdate to neighbor %s", on->name);
2690
2691 if (on->state < OSPF6_NEIGHBOR_EXCHANGE) {
f44d0f5e 2692 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE,
2693 SEND_HDR))
d62a17ae 2694 zlog_debug("Quit to send (neighbor state %s)",
2695 ospf6_neighbor_state_str[on->state]);
cc9f21da 2696 return;
d62a17ae 2697 }
2698
432b7daf
PR		 2699 /* first do lsupdate_list */
2700 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2701 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, on->ospf6_if, op->s);
2702 length += ospf6_make_lsupdate_list(on, &op, &lsa_cnt);
d62a17ae 2703 if (lsa_cnt) {
432b7daf
PR		 2704 /* Fill OSPF header. */
2705 ospf6_fill_header(on->ospf6_if, op->s, length);
2706 ospf6_fill_lsupdate_header(op->s, lsa_cnt);
2707 op->length = length;
2708 ospf6_send_lsupdate(on, NULL, op);
2709
2710 /* prepare new packet */
2711 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2712 length = OSPF6_HEADER_SIZE;
2713 lsa_cnt = 0;
2714 } else {
2715 stream_reset(op->s);
2716 length = OSPF6_HEADER_SIZE;
2717 }
2718
2719 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, on->ospf6_if, op->s);
2720 /* now do retransmit list */
2721 length += ospf6_make_ls_retrans_list(on, &op, &lsa_cnt);
d62a17ae 2722 if (lsa_cnt) {
432b7daf
PR		 2723 ospf6_fill_header(on->ospf6_if, op->s, length);
2724 ospf6_fill_lsupdate_header(op->s, lsa_cnt);
2725 op->length = length;
d62a17ae 2726 if (on->ospf6_if->state == OSPF6_INTERFACE_POINTTOPOINT)
432b7daf 2727 op->dst = allspfrouters6;
d62a17ae 2728 else
432b7daf 2729 op->dst = on->linklocal_addr;
6cb85350 2730 ospf6_fill_hdr_checksum(on->ospf6_if, op);
432b7daf
PR		 2731 ospf6_packet_add(on->ospf6_if, op);
2732 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
2733 } else
2734 ospf6_packet_free(op);
d62a17ae 2735
2736 if (on->lsupdate_list->count != 0) {
d62a17ae 2737 thread_add_event(master, ospf6_lsupdate_send_neighbor, on, 0,
2738 &on->thread_send_lsupdate);
2739 } else if (on->retrans_list->count != 0) {
d62a17ae 2740 thread_add_timer(master, ospf6_lsupdate_send_neighbor, on,
2741 on->ospf6_if->rxmt_interval,
2742 &on->thread_send_lsupdate);
2743 }
718e3744 2744}
2745
76249532
CS		 2746int ospf6_lsupdate_send_neighbor_now(struct ospf6_neighbor *on,
2747 struct ospf6_lsa *lsa)
2748{
432b7daf
PR		 2749 struct ospf6_packet *op;
2750 uint16_t length = OSPF6_HEADER_SIZE;
76249532 2751
432b7daf
PR		 2752 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2753 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, on->ospf6_if, op->s);
76249532 2754
432b7daf
PR		 2755 /* skip over fixed header */
2756 stream_forward_endp(op->s, OSPF6_LS_UPD_MIN_SIZE);
76249532 2757 ospf6_lsa_age_update_to_send(lsa, on->ospf6_if->transdelay);
432b7daf
PR		 2758 stream_put(op->s, lsa->header, OSPF6_LSA_SIZE(lsa->header));
2759 length = OSPF6_HEADER_SIZE + OSPF6_LS_UPD_MIN_SIZE
2760 + OSPF6_LSA_SIZE(lsa->header);
2761 ospf6_fill_header(on->ospf6_if, op->s, length);
2762 ospf6_fill_lsupdate_header(op->s, 1);
2763 op->length = length;
76249532 2764
996c9314 2765 if (IS_OSPF6_DEBUG_FLOODING
f44d0f5e 2766 || IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND_HDR))
15569c58
DA		 2767 zlog_debug("%s: Send lsupdate with lsa %s (age %u)", __func__,
2768 lsa->name, ntohs(lsa->header->age));
76249532 2769
432b7daf 2770 ospf6_send_lsupdate(on, NULL, op);
76249532
CS		 2771
2772 return 0;
2773}
2774
432b7daf
PR		 2775static uint16_t ospf6_make_lsupdate_interface(struct ospf6_interface *oi,
2776 struct ospf6_packet **op,
2777 int *lsa_cnt)
2778{
2779 uint16_t length = OSPF6_LS_UPD_MIN_SIZE;
2780 struct ospf6_lsa *lsa, *lsanext;
2781
2782 /* skip over fixed header */
2783 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
2784
2785 for (ALL_LSDB(oi->lsupdate_list, lsa, lsanext)) {
42bfee18
AR		 2786 if (length + OSPF6_LSA_SIZE(lsa->header) + OSPF6_HEADER_SIZE >
2787 ospf6_packet_max(oi)) {
432b7daf
PR		 2788 ospf6_fill_header(oi, (*op)->s,
2789 length + OSPF6_HEADER_SIZE);
2790 (*op)->length = length + OSPF6_HEADER_SIZE;
2791 ospf6_fill_lsupdate_header((*op)->s, *lsa_cnt);
2792 ospf6_send_lsupdate(NULL, oi, *op);
2793
2794 /* refresh packet */
2795 *op = ospf6_packet_new(oi->ifmtu);
2796 length = OSPF6_LS_UPD_MIN_SIZE;
2797 *lsa_cnt = 0;
2798 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, oi,
2799 (*op)->s);
2800 stream_forward_endp((*op)->s, OSPF6_LS_UPD_MIN_SIZE);
2801 }
2802
2803 ospf6_lsa_age_update_to_send(lsa, oi->transdelay);
2804 stream_put((*op)->s, lsa->header, OSPF6_LSA_SIZE(lsa->header));
2805 (*lsa_cnt)++;
2806 length += OSPF6_LSA_SIZE(lsa->header);
2807
2808 assert(lsa->lock == 2);
2809 ospf6_lsdb_remove(lsa, oi->lsupdate_list);
2810 }
2811 return length;
2812}
2813
cc9f21da 2814void ospf6_lsupdate_send_interface(struct thread *thread)
718e3744 2815{
d62a17ae 2816 struct ospf6_interface *oi;
432b7daf
PR		 2817 struct ospf6_packet *op;
2818 uint16_t length = OSPF6_HEADER_SIZE;
2819 int lsa_cnt = 0;
d62a17ae 2820
2821 oi = (struct ospf6_interface *)THREAD_ARG(thread);
d62a17ae 2822
2823 if (oi->state <= OSPF6_INTERFACE_WAITING) {
f44d0f5e 2824 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE,
2825 SEND_HDR))
d62a17ae 2826 zlog_debug(
2827 "Quit to send LSUpdate to interface %s state %s",
2828 oi->interface->name,
2829 ospf6_interface_state_str[oi->state]);
cc9f21da 2830 return;
d62a17ae 2831 }
2832
2833 /* if we have nothing to send, return */
2834 if (oi->lsupdate_list->count == 0)
cc9f21da 2835 return;
d62a17ae 2836
432b7daf
PR		 2837 op = ospf6_packet_new(oi->ifmtu);
2838 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSUPDATE, oi, op->s);
2839 length += ospf6_make_lsupdate_interface(oi, &op, &lsa_cnt);
d62a17ae 2840 if (lsa_cnt) {
432b7daf
PR		 2841 /* Fill OSPF header. */
2842 ospf6_fill_header(oi, op->s, length);
2843 ospf6_fill_lsupdate_header(op->s, lsa_cnt);
2844 op->length = length;
2845 ospf6_send_lsupdate(NULL, oi, op);
2846 } else
2847 ospf6_packet_free(op);
d62a17ae 2848
2849 if (oi->lsupdate_list->count > 0) {
d62a17ae 2850 thread_add_event(master, ospf6_lsupdate_send_interface, oi, 0,
2851 &oi->thread_send_lsupdate);
2852 }
718e3744 2853}
2854
cc9f21da 2855void ospf6_lsack_send_neighbor(struct thread *thread)
718e3744 2856{
d62a17ae 2857 struct ospf6_neighbor *on;
dd784cf9
PR		 2858 struct ospf6_packet *op;
2859 uint16_t length = OSPF6_HEADER_SIZE;
d62a17ae 2860
2861 on = (struct ospf6_neighbor *)THREAD_ARG(thread);
d62a17ae 2862
2863 if (on->state < OSPF6_NEIGHBOR_EXCHANGE) {
f44d0f5e 2864 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND_HDR))
d62a17ae 2865 zlog_debug("Quit to send LSAck to neighbor %s state %s",
2866 on->name,
2867 ospf6_neighbor_state_str[on->state]);
cc9f21da 2868 return;
d62a17ae 2869 }
2870
2871 /* if we have nothing to send, return */
2872 if (on->lsack_list->count == 0)
cc9f21da 2873 return;
d62a17ae 2874
dd784cf9
PR		 2875 op = ospf6_packet_new(on->ospf6_if->ifmtu);
2876 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSACK, on->ospf6_if, op->s);
d62a17ae 2877
dd784cf9 2878 length += ospf6_make_lsack_neighbor(on, &op);
d62a17ae 2879
dd784cf9
PR		 2880 if (length == OSPF6_HEADER_SIZE) {
2881 ospf6_packet_free(op);
cc9f21da 2882 return;
d62a17ae 2883 }
2884
dd784cf9
PR		 2885 /* Fill OSPF header. */
2886 ospf6_fill_header(on->ospf6_if, op->s, length);
43855e3d 2887
dd784cf9
PR		 2888 /* Set packet length, dst and queue to FIFO. */
2889 op->length = length;
2890 op->dst = on->linklocal_addr;
6cb85350 2891 ospf6_fill_hdr_checksum(on->ospf6_if, op);
dd784cf9
PR		 2892 ospf6_packet_add(on->ospf6_if, op);
2893 OSPF6_MESSAGE_WRITE_ON(on->ospf6_if);
d62a17ae 2894
2895 if (on->lsack_list->count > 0)
2896 thread_add_event(master, ospf6_lsack_send_neighbor, on, 0,
2897 &on->thread_send_lsack);
718e3744 2898}
2899
dd784cf9
PR		 2900static uint16_t ospf6_make_lsack_interface(struct ospf6_interface *oi,
2901 struct ospf6_packet *op)
2902{
2903 uint16_t length = 0;
2904 struct ospf6_lsa *lsa, *lsanext;
2905
2906 for (ALL_LSDB(oi->lsack_list, lsa, lsanext)) {
2907 if ((length + sizeof(struct ospf6_lsa_header)
2908 + OSPF6_HEADER_SIZE)
2909 > ospf6_packet_max(oi)) {
2910 /* if we run out of packet size/space here,
2911 better to try again soon. */
2912 THREAD_OFF(oi->thread_send_lsack);
2913 thread_add_event(master, ospf6_lsack_send_interface, oi,
2914 0, &oi->thread_send_lsack);
2915
2916 ospf6_lsa_unlock(lsa);
2917 if (lsanext)
2918 ospf6_lsa_unlock(lsanext);
2919 break;
2920 }
2921 ospf6_lsa_age_update_to_send(lsa, oi->transdelay);
2922 stream_put(op->s, lsa->header, sizeof(struct ospf6_lsa_header));
2923 length += sizeof(struct ospf6_lsa_header);
2924
2925 assert(lsa->lock == 2);
2926 ospf6_lsdb_remove(lsa, oi->lsack_list);
2927 }
2928 return length;
2929}
2930
cc9f21da 2931void ospf6_lsack_send_interface(struct thread *thread)
718e3744 2932{
d62a17ae 2933 struct ospf6_interface *oi;
dd784cf9
PR		 2934 struct ospf6_packet *op;
2935 uint16_t length = OSPF6_HEADER_SIZE;
d62a17ae 2936
2937 oi = (struct ospf6_interface *)THREAD_ARG(thread);
d62a17ae 2938
2939 if (oi->state <= OSPF6_INTERFACE_WAITING) {
f44d0f5e 2940 if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND_HDR))
d62a17ae 2941 zlog_debug(
2942 "Quit to send LSAck to interface %s state %s",
2943 oi->interface->name,
2944 ospf6_interface_state_str[oi->state]);
cc9f21da 2945 return;
d62a17ae 2946 }
2947
2948 /* if we have nothing to send, return */
2949 if (oi->lsack_list->count == 0)
cc9f21da 2950 return;
d62a17ae 2951
dd784cf9
PR		 2952 op = ospf6_packet_new(oi->ifmtu);
2953 ospf6_make_header(OSPF6_MESSAGE_TYPE_LSACK, oi, op->s);
d62a17ae 2954
dd784cf9 2955 length += ospf6_make_lsack_interface(oi, op);
d62a17ae 2956
dd784cf9
PR		 2957 if (length == OSPF6_HEADER_SIZE) {
2958 ospf6_packet_free(op);
cc9f21da 2959 return;
d62a17ae 2960 }
dd784cf9
PR		 2961 /* Fill OSPF header. */
2962 ospf6_fill_header(oi, op->s, length);
d62a17ae 2963
dd784cf9
PR		 2964 /* Set packet length, dst and queue to FIFO. */
2965 op->length = length;
2966 if ((oi->state == OSPF6_INTERFACE_POINTTOPOINT)
2967 || (oi->state == OSPF6_INTERFACE_DR)
2968 || (oi->state == OSPF6_INTERFACE_BDR))
2969 op->dst = allspfrouters6;
2970 else
2971 op->dst = alldrouters6;
d62a17ae 2972
6cb85350 2973 ospf6_fill_hdr_checksum(oi, op);
dd784cf9
PR		 2974 ospf6_packet_add(oi, op);
2975 OSPF6_MESSAGE_WRITE_ON(oi);
d62a17ae 2976
2977 if (oi->lsack_list->count > 0)
2978 thread_add_event(master, ospf6_lsack_send_interface, oi, 0,
2979 &oi->thread_send_lsack);
718e3744 2980}
2981
508e53e2 2982/* Commands */
f44d0f5e 2983DEFUN(debug_ospf6_message, debug_ospf6_message_cmd,
2984 "debug ospf6 message <unknown|hello|dbdesc|lsreq|lsupdate|lsack|all> [<send|recv|send-hdr|recv-hdr>]",
2985 DEBUG_STR OSPF6_STR
2986 "Debug OSPFv3 message\n"
2987 "Debug Unknown message\n"
2988 "Debug Hello message\n"
2989 "Debug Database Description message\n"
2990 "Debug Link State Request message\n"
2991 "Debug Link State Update message\n"
2992 "Debug Link State Acknowledgement message\n"
2993 "Debug All message\n"
2994 "Debug only sending message, entire packet\n"
2995 "Debug only receiving message, entire packet\n"
2996 "Debug only sending message, header only\n"
2997 "Debug only receiving message, header only\n")
718e3744 2998{
d62a17ae 2999 int idx_packet = 3;
3000 int idx_send_recv = 4;
3001 unsigned char level = 0;
3002 int type = 0;
3003 int i;
3004
3005 /* check type */
3006 if (!strncmp(argv[idx_packet]->arg, "u", 1))
3007 type = OSPF6_MESSAGE_TYPE_UNKNOWN;
3008 else if (!strncmp(argv[idx_packet]->arg, "h", 1))
3009 type = OSPF6_MESSAGE_TYPE_HELLO;
3010 else if (!strncmp(argv[idx_packet]->arg, "d", 1))
3011 type = OSPF6_MESSAGE_TYPE_DBDESC;
3012 else if (!strncmp(argv[idx_packet]->arg, "lsr", 3))
3013 type = OSPF6_MESSAGE_TYPE_LSREQ;
3014 else if (!strncmp(argv[idx_packet]->arg, "lsu", 3))
3015 type = OSPF6_MESSAGE_TYPE_LSUPDATE;
3016 else if (!strncmp(argv[idx_packet]->arg, "lsa", 3))
3017 type = OSPF6_MESSAGE_TYPE_LSACK;
3018 else if (!strncmp(argv[idx_packet]->arg, "a", 1))
3019 type = OSPF6_MESSAGE_TYPE_ALL;
3020
3021 if (argc == 4)
3022 level = OSPF6_DEBUG_MESSAGE_SEND | OSPF6_DEBUG_MESSAGE_RECV;
f44d0f5e 3023 else if (!strncmp(argv[idx_send_recv]->arg, "send-h", 6))
3024 level = OSPF6_DEBUG_MESSAGE_SEND_HDR;
d62a17ae 3025 else if (!strncmp(argv[idx_send_recv]->arg, "s", 1))
3026 level = OSPF6_DEBUG_MESSAGE_SEND;
f44d0f5e 3027 else if (!strncmp(argv[idx_send_recv]->arg, "recv-h", 6))
3028 level = OSPF6_DEBUG_MESSAGE_RECV_HDR;
d62a17ae 3029 else if (!strncmp(argv[idx_send_recv]->arg, "r", 1))
3030 level = OSPF6_DEBUG_MESSAGE_RECV;
3031
3032 if (type == OSPF6_MESSAGE_TYPE_ALL) {
3033 for (i = 0; i < 6; i++)
3034 OSPF6_DEBUG_MESSAGE_ON(i, level);
3035 } else
3036 OSPF6_DEBUG_MESSAGE_ON(type, level);
3037
3038 return CMD_SUCCESS;
718e3744 3039}
3040
f44d0f5e 3041DEFUN(no_debug_ospf6_message, no_debug_ospf6_message_cmd,
3042 "no debug ospf6 message <unknown|hello|dbdesc|lsreq|lsupdate|lsack|all> [<send|recv|send-hdr|recv-hdr>]",
3043 NO_STR DEBUG_STR OSPF6_STR
3044 "Debug OSPFv3 message\n"
3045 "Debug Unknown message\n"
3046 "Debug Hello message\n"
3047 "Debug Database Description message\n"
3048 "Debug Link State Request message\n"
3049 "Debug Link State Update message\n"
3050 "Debug Link State Acknowledgement message\n"
3051 "Debug All message\n"
3052 "Debug only sending message, entire pkt\n"
3053 "Debug only receiving message, entire pkt\n"
3054 "Debug only sending message, header only\n"
3055 "Debug only receiving message, header only\n")
508e53e2 3056{
d62a17ae 3057 int idx_packet = 4;
3058 int idx_send_recv = 5;
3059 unsigned char level = 0;
3060 int type = 0;
3061 int i;
3062
3063 /* check type */
3064 if (!strncmp(argv[idx_packet]->arg, "u", 1))
3065 type = OSPF6_MESSAGE_TYPE_UNKNOWN;
3066 else if (!strncmp(argv[idx_packet]->arg, "h", 1))
3067 type = OSPF6_MESSAGE_TYPE_HELLO;
3068 else if (!strncmp(argv[idx_packet]->arg, "d", 1))
3069 type = OSPF6_MESSAGE_TYPE_DBDESC;
3070 else if (!strncmp(argv[idx_packet]->arg, "lsr", 3))
3071 type = OSPF6_MESSAGE_TYPE_LSREQ;
3072 else if (!strncmp(argv[idx_packet]->arg, "lsu", 3))
3073 type = OSPF6_MESSAGE_TYPE_LSUPDATE;
3074 else if (!strncmp(argv[idx_packet]->arg, "lsa", 3))
3075 type = OSPF6_MESSAGE_TYPE_LSACK;
3076 else if (!strncmp(argv[idx_packet]->arg, "a", 1))
3077 type = OSPF6_MESSAGE_TYPE_ALL;
3078
3079 if (argc == 5)
f44d0f5e 3080 level = OSPF6_DEBUG_MESSAGE_SEND | OSPF6_DEBUG_MESSAGE_RECV
3081 | OSPF6_DEBUG_MESSAGE_SEND_HDR
3082 | OSPF6_DEBUG_MESSAGE_RECV_HDR;
3083 else if (!strncmp(argv[idx_send_recv]->arg, "send-h", 6))
3084 level = OSPF6_DEBUG_MESSAGE_SEND_HDR;
d62a17ae 3085 else if (!strncmp(argv[idx_send_recv]->arg, "s", 1))
3086 level = OSPF6_DEBUG_MESSAGE_SEND;
f44d0f5e 3087 else if (!strncmp(argv[idx_send_recv]->arg, "recv-h", 6))
3088 level = OSPF6_DEBUG_MESSAGE_RECV_HDR;
d62a17ae 3089 else if (!strncmp(argv[idx_send_recv]->arg, "r", 1))
3090 level = OSPF6_DEBUG_MESSAGE_RECV;
3091
3092 if (type == OSPF6_MESSAGE_TYPE_ALL) {
3093 for (i = 0; i < 6; i++)
3094 OSPF6_DEBUG_MESSAGE_OFF(i, level);
3095 } else
3096 OSPF6_DEBUG_MESSAGE_OFF(type, level);
3097
3098 return CMD_SUCCESS;
718e3744 3099}
3100
508e53e2 3101
d62a17ae 3102int config_write_ospf6_debug_message(struct vty *vty)
718e3744 3103{
d62a17ae 3104 const char *type_str[] = {"unknown", "hello", "dbdesc",
3105 "lsreq", "lsupdate", "lsack"};
f44d0f5e 3106 unsigned char s = 0, r = 0, sh = 0, rh = 0;
d62a17ae 3107 int i;
3108
3109 for (i = 0; i < 6; i++) {
f44d0f5e 3110 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND))
d62a17ae 3111 s |= 1 << i;
f44d0f5e 3112 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV))
d62a17ae 3113 r |= 1 << i;
3114 }
3115
f44d0f5e 3116 for (i = 0; i < 6; i++) {
3117 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND_HDR))
3118 sh |= 1 << i;
3119 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV_HDR))
3120 rh |= 1 << i;
3121 }
3122
d62a17ae 3123 if (s == 0x3f && r == 0x3f) {
3124 vty_out(vty, "debug ospf6 message all\n");
3125 return 0;
3126 }
3127
3128 if (s == 0x3f && r == 0) {
3129 vty_out(vty, "debug ospf6 message all send\n");
3130 return 0;
3131 } else if (s == 0 && r == 0x3f) {
3132 vty_out(vty, "debug ospf6 message all recv\n");
3133 return 0;
3134 }
3135
f44d0f5e 3136 if (sh == 0x3f && rh == 0) {
3137 vty_out(vty, "debug ospf6 message all send-hdr\n");
3138 return 0;
3139 } else if (sh == 0 && rh == 0x3f) {
3140 vty_out(vty, "debug ospf6 message all recv-hdr\n");
3141 return 0;
3142 }
3143
d62a17ae 3144 /* Unknown message is logged by default */
3145 if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, SEND)
3146 && !IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV))
3147 vty_out(vty, "no debug ospf6 message unknown\n");
3148 else if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, SEND))
3149 vty_out(vty, "no debug ospf6 message unknown send\n");
3150 else if (!IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_UNKNOWN, RECV))
3151 vty_out(vty, "no debug ospf6 message unknown recv\n");
3152
3153 for (i = 1; i < 6; i++) {
f44d0f5e 3154 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND)
c9ac777a 3155 && IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV)) {
d62a17ae 3156 vty_out(vty, "debug ospf6 message %s\n", type_str[i]);
c9ac777a
IR		 3157 continue;
3158 }
3159
3160 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND))
d62a17ae 3161 vty_out(vty, "debug ospf6 message %s send\n",
3162 type_str[i]);
c9ac777a
IR		 3163 else if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, SEND_HDR))
3164 vty_out(vty, "debug ospf6 message %s send-hdr\n",
d62a17ae 3165 type_str[i]);
c9ac777a
IR		 3166
3167 if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV))
3168 vty_out(vty, "debug ospf6 message %s recv\n",
f44d0f5e 3169 type_str[i]);
3170 else if (IS_OSPF6_DEBUG_MESSAGE_ENABLED(i, RECV_HDR))
3171 vty_out(vty, "debug ospf6 message %s recv-hdr\n",
3172 type_str[i]);
d62a17ae 3173 }
3174
3175 return 0;
718e3744 3176}
3177
d62a17ae 3178void install_element_ospf6_debug_message(void)
508e53e2 3179{
d62a17ae 3180 install_element(ENABLE_NODE, &debug_ospf6_message_cmd);
3181 install_element(ENABLE_NODE, &no_debug_ospf6_message_cmd);
3182 install_element(CONFIG_NODE, &debug_ospf6_message_cmd);
3183 install_element(CONFIG_NODE, &no_debug_ospf6_message_cmd);
508e53e2 3184}
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