2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions are met:
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28 * THE POSSIBILITY OF SUCH DAMAGE.
31 /* $KAME: sctp_asconf.c,v 1.24 2005/03/06 16:04:16 itojun Exp $ */
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35 #include <netinet/sctp_os.h>
36 #include <netinet/sctp_var.h>
37 #include <netinet/sctp_sysctl.h>
38 #include <netinet/sctp_pcb.h>
39 #include <netinet/sctp_header.h>
40 #include <netinet/sctputil.h>
41 #include <netinet/sctp_output.h>
42 #include <netinet/sctp_asconf.h>
43 #include <netinet/sctp_timer.h>
47 * SCTP_DEBUG_ASCONF1: protocol info, general info and errors
48 * SCTP_DEBUG_ASCONF2: detailed info
51 #endif /* SCTP_DEBUG */
55 sctp_asconf_get_source_ip(struct mbuf *m, struct sockaddr *sa)
58 struct sockaddr_in *sin;
61 struct sockaddr_in6 *sin6;
65 iph = mtod(m, struct ip *);
66 if (iph->ip_v == IPVERSION) {
68 sin = (struct sockaddr_in *)sa;
69 bzero(sin, sizeof(*sin));
70 sin->sin_family = AF_INET;
71 sin->sin_len = sizeof(struct sockaddr_in);
73 sin->sin_addr.s_addr = iph->ip_src.s_addr;
77 else if (iph->ip_v == (IPV6_VERSION >> 4)) {
81 sin6 = (struct sockaddr_in6 *)sa;
82 bzero(sin6, sizeof(*sin6));
83 sin6->sin6_family = AF_INET6;
84 sin6->sin6_len = sizeof(struct sockaddr_in6);
86 ip6 = mtod(m, struct ip6_hdr *);
87 sin6->sin6_addr = ip6->ip6_src;
96 * draft-ietf-tsvwg-addip-sctp
98 * An ASCONF parameter queue exists per asoc which holds the pending address
99 * operations. Lists are updated upon receipt of ASCONF-ACK.
101 * A restricted_addrs list exists per assoc to hold local addresses that are
102 * not (yet) usable by the assoc as a source address. These addresses are
103 * either pending an ASCONF operation (and exist on the ASCONF parameter
104 * queue), or they are permanently restricted (the peer has returned an
105 * ERROR indication to an ASCONF(ADD), or the peer does not support ASCONF).
107 * Deleted addresses are always immediately removed from the lists as they will
108 * (shortly) no longer exist in the kernel. We send ASCONFs as a courtesy,
113 * ASCONF parameter processing.
114 * response_required: set if a reply is required (eg. SUCCESS_REPORT).
115 * returns a mbuf to an "error" response parameter or NULL/"success" if ok.
116 * FIX: allocating this many mbufs on the fly is pretty inefficient...
119 sctp_asconf_success_response(uint32_t id)
121 struct mbuf *m_reply = NULL;
122 struct sctp_asconf_paramhdr *aph;
124 m_reply = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_paramhdr),
125 0, M_DONTWAIT, 1, MT_DATA);
126 if (m_reply == NULL) {
127 SCTPDBG(SCTP_DEBUG_ASCONF1,
128 "asconf_success_response: couldn't get mbuf!\n");
131 aph = mtod(m_reply, struct sctp_asconf_paramhdr *);
132 aph->correlation_id = id;
133 aph->ph.param_type = htons(SCTP_SUCCESS_REPORT);
134 aph->ph.param_length = sizeof(struct sctp_asconf_paramhdr);
135 SCTP_BUF_LEN(m_reply) = aph->ph.param_length;
136 aph->ph.param_length = htons(aph->ph.param_length);
142 sctp_asconf_error_response(uint32_t id, uint16_t cause, uint8_t * error_tlv,
145 struct mbuf *m_reply = NULL;
146 struct sctp_asconf_paramhdr *aph;
147 struct sctp_error_cause *error;
150 m_reply = sctp_get_mbuf_for_msg((sizeof(struct sctp_asconf_paramhdr) +
152 sizeof(struct sctp_error_cause)),
153 0, M_DONTWAIT, 1, MT_DATA);
154 if (m_reply == NULL) {
155 SCTPDBG(SCTP_DEBUG_ASCONF1,
156 "asconf_error_response: couldn't get mbuf!\n");
159 aph = mtod(m_reply, struct sctp_asconf_paramhdr *);
160 error = (struct sctp_error_cause *)(aph + 1);
162 aph->correlation_id = id;
163 aph->ph.param_type = htons(SCTP_ERROR_CAUSE_IND);
164 error->code = htons(cause);
165 error->length = tlv_length + sizeof(struct sctp_error_cause);
166 aph->ph.param_length = error->length +
167 sizeof(struct sctp_asconf_paramhdr);
169 if (aph->ph.param_length > MLEN) {
170 SCTPDBG(SCTP_DEBUG_ASCONF1,
171 "asconf_error_response: tlv_length (%xh) too big\n",
173 sctp_m_freem(m_reply); /* discard */
176 if (error_tlv != NULL) {
177 tlv = (uint8_t *) (error + 1);
178 memcpy(tlv, error_tlv, tlv_length);
180 SCTP_BUF_LEN(m_reply) = aph->ph.param_length;
181 error->length = htons(error->length);
182 aph->ph.param_length = htons(aph->ph.param_length);
188 sctp_process_asconf_add_ip(struct mbuf *m, struct sctp_asconf_paramhdr *aph,
189 struct sctp_tcb *stcb, int response_required)
191 struct mbuf *m_reply = NULL;
192 struct sockaddr_storage sa_source, sa_store;
193 struct sctp_ipv4addr_param *v4addr;
194 uint16_t param_type, param_length, aparam_length;
196 struct sockaddr_in *sin;
197 int zero_address = 0;
200 struct sockaddr_in6 *sin6;
201 struct sctp_ipv6addr_param *v6addr;
205 aparam_length = ntohs(aph->ph.param_length);
206 v4addr = (struct sctp_ipv4addr_param *)(aph + 1);
208 v6addr = (struct sctp_ipv6addr_param *)(aph + 1);
210 param_type = ntohs(v4addr->ph.param_type);
211 param_length = ntohs(v4addr->ph.param_length);
213 sa = (struct sockaddr *)&sa_store;
214 switch (param_type) {
215 case SCTP_IPV4_ADDRESS:
216 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
217 /* invalid param size */
220 sin = (struct sockaddr_in *)&sa_store;
221 bzero(sin, sizeof(*sin));
222 sin->sin_family = AF_INET;
223 sin->sin_len = sizeof(struct sockaddr_in);
224 sin->sin_port = stcb->rport;
225 sin->sin_addr.s_addr = v4addr->addr;
226 if (sin->sin_addr.s_addr == INADDR_ANY)
228 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding ");
229 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
231 case SCTP_IPV6_ADDRESS:
233 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
234 /* invalid param size */
237 sin6 = (struct sockaddr_in6 *)&sa_store;
238 bzero(sin6, sizeof(*sin6));
239 sin6->sin6_family = AF_INET6;
240 sin6->sin6_len = sizeof(struct sockaddr_in6);
241 sin6->sin6_port = stcb->rport;
242 memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr,
243 sizeof(struct in6_addr));
244 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
246 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding ");
247 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
249 /* IPv6 not enabled! */
250 /* FIX ME: currently sends back an invalid param error */
251 m_reply = sctp_asconf_error_response(aph->correlation_id,
252 SCTP_CAUSE_INVALID_PARAM, (uint8_t *) aph, aparam_length);
253 SCTPDBG(SCTP_DEBUG_ASCONF1,
254 "process_asconf_add_ip: v6 disabled- skipping ");
255 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
260 m_reply = sctp_asconf_error_response(aph->correlation_id,
261 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph,
266 /* if 0.0.0.0/::0, add the source address instead */
267 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
268 sa = (struct sockaddr *)&sa_source;
269 sctp_asconf_get_source_ip(m, sa);
270 SCTPDBG(SCTP_DEBUG_ASCONF1,
271 "process_asconf_add_ip: using source addr ");
272 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
274 /* add the address */
275 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE,
276 SCTP_ADDR_DYNAMIC_ADDED) != 0) {
277 SCTPDBG(SCTP_DEBUG_ASCONF1,
278 "process_asconf_add_ip: error adding address\n");
279 m_reply = sctp_asconf_error_response(aph->correlation_id,
280 SCTP_CAUSE_RESOURCE_SHORTAGE, (uint8_t *) aph,
283 /* notify upper layer */
284 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_ADD_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
285 if (response_required) {
287 sctp_asconf_success_response(aph->correlation_id);
289 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb,
290 NULL, SCTP_FROM_SCTP_ASCONF + SCTP_LOC_1);
291 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep,
299 sctp_asconf_del_remote_addrs_except(struct sctp_tcb *stcb, struct sockaddr *src)
301 struct sctp_nets *src_net, *net;
303 /* make sure the source address exists as a destination net */
304 src_net = sctp_findnet(stcb, src);
305 if (src_net == NULL) {
309 /* delete all destination addresses except the source */
310 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
311 if (net != src_net) {
312 /* delete this address */
313 sctp_remove_net(stcb, net);
314 SCTPDBG(SCTP_DEBUG_ASCONF1,
315 "asconf_del_remote_addrs_except: deleting ");
316 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1,
317 (struct sockaddr *)&net->ro._l_addr);
318 /* notify upper layer */
319 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0,
320 (struct sockaddr *)&net->ro._l_addr, SCTP_SO_NOT_LOCKED);
327 sctp_process_asconf_delete_ip(struct mbuf *m, struct sctp_asconf_paramhdr *aph,
328 struct sctp_tcb *stcb, int response_required)
330 struct mbuf *m_reply = NULL;
331 struct sockaddr_storage sa_source, sa_store;
332 struct sctp_ipv4addr_param *v4addr;
333 uint16_t param_type, param_length, aparam_length;
335 struct sockaddr_in *sin;
336 int zero_address = 0;
340 struct sockaddr_in6 *sin6;
341 struct sctp_ipv6addr_param *v6addr;
345 /* get the source IP address for src and 0.0.0.0/::0 delete checks */
346 sctp_asconf_get_source_ip(m, (struct sockaddr *)&sa_source);
348 aparam_length = ntohs(aph->ph.param_length);
349 v4addr = (struct sctp_ipv4addr_param *)(aph + 1);
351 v6addr = (struct sctp_ipv6addr_param *)(aph + 1);
353 param_type = ntohs(v4addr->ph.param_type);
354 param_length = ntohs(v4addr->ph.param_length);
356 sa = (struct sockaddr *)&sa_store;
357 switch (param_type) {
358 case SCTP_IPV4_ADDRESS:
359 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
360 /* invalid param size */
363 sin = (struct sockaddr_in *)&sa_store;
364 bzero(sin, sizeof(*sin));
365 sin->sin_family = AF_INET;
366 sin->sin_len = sizeof(struct sockaddr_in);
367 sin->sin_port = stcb->rport;
368 sin->sin_addr.s_addr = v4addr->addr;
369 if (sin->sin_addr.s_addr == INADDR_ANY)
371 SCTPDBG(SCTP_DEBUG_ASCONF1,
372 "process_asconf_delete_ip: deleting ");
373 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
375 case SCTP_IPV6_ADDRESS:
376 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
377 /* invalid param size */
381 sin6 = (struct sockaddr_in6 *)&sa_store;
382 bzero(sin6, sizeof(*sin6));
383 sin6->sin6_family = AF_INET6;
384 sin6->sin6_len = sizeof(struct sockaddr_in6);
385 sin6->sin6_port = stcb->rport;
386 memcpy(&sin6->sin6_addr, v6addr->addr,
387 sizeof(struct in6_addr));
388 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
390 SCTPDBG(SCTP_DEBUG_ASCONF1,
391 "process_asconf_delete_ip: deleting ");
392 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
394 /* IPv6 not enabled! No "action" needed; just ack it */
395 SCTPDBG(SCTP_DEBUG_ASCONF1,
396 "process_asconf_delete_ip: v6 disabled- ignoring: ");
397 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
398 /* just respond with a "success" ASCONF-ACK */
403 m_reply = sctp_asconf_error_response(aph->correlation_id,
404 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph,
409 /* make sure the source address is not being deleted */
410 if (sctp_cmpaddr(sa, (struct sockaddr *)&sa_source)) {
411 /* trying to delete the source address! */
412 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete source addr\n");
413 m_reply = sctp_asconf_error_response(aph->correlation_id,
414 SCTP_CAUSE_DELETING_SRC_ADDR, (uint8_t *) aph,
418 /* if deleting 0.0.0.0/::0, delete all addresses except src addr */
419 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
420 result = sctp_asconf_del_remote_addrs_except(stcb,
421 (struct sockaddr *)&sa_source);
424 /* src address did not exist? */
425 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: src addr does not exist?\n");
426 /* what error to reply with?? */
428 sctp_asconf_error_response(aph->correlation_id,
429 SCTP_CAUSE_REQUEST_REFUSED, (uint8_t *) aph,
431 } else if (response_required) {
433 sctp_asconf_success_response(aph->correlation_id);
437 /* delete the address */
438 result = sctp_del_remote_addr(stcb, sa);
440 * note if result == -2, the address doesn't exist in the asoc but
441 * since it's being deleted anyways, we just ack the delete -- but
442 * this probably means something has already gone awry
445 /* only one address in the asoc */
446 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete last IP addr!\n");
447 m_reply = sctp_asconf_error_response(aph->correlation_id,
448 SCTP_CAUSE_DELETING_LAST_ADDR, (uint8_t *) aph,
451 if (response_required) {
452 m_reply = sctp_asconf_success_response(aph->correlation_id);
454 /* notify upper layer */
455 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
461 sctp_process_asconf_set_primary(struct mbuf *m,
462 struct sctp_asconf_paramhdr *aph,
463 struct sctp_tcb *stcb, int response_required)
465 struct mbuf *m_reply = NULL;
466 struct sockaddr_storage sa_source, sa_store;
467 struct sctp_ipv4addr_param *v4addr;
468 uint16_t param_type, param_length, aparam_length;
470 struct sockaddr_in *sin;
471 int zero_address = 0;
474 struct sockaddr_in6 *sin6;
475 struct sctp_ipv6addr_param *v6addr;
479 aparam_length = ntohs(aph->ph.param_length);
480 v4addr = (struct sctp_ipv4addr_param *)(aph + 1);
482 v6addr = (struct sctp_ipv6addr_param *)(aph + 1);
484 param_type = ntohs(v4addr->ph.param_type);
485 param_length = ntohs(v4addr->ph.param_length);
487 sa = (struct sockaddr *)&sa_store;
488 switch (param_type) {
489 case SCTP_IPV4_ADDRESS:
490 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
491 /* invalid param size */
494 sin = (struct sockaddr_in *)&sa_store;
495 bzero(sin, sizeof(*sin));
496 sin->sin_family = AF_INET;
497 sin->sin_len = sizeof(struct sockaddr_in);
498 sin->sin_addr.s_addr = v4addr->addr;
499 if (sin->sin_addr.s_addr == INADDR_ANY)
501 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: ");
502 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
504 case SCTP_IPV6_ADDRESS:
505 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
506 /* invalid param size */
510 sin6 = (struct sockaddr_in6 *)&sa_store;
511 bzero(sin6, sizeof(*sin6));
512 sin6->sin6_family = AF_INET6;
513 sin6->sin6_len = sizeof(struct sockaddr_in6);
514 memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr,
515 sizeof(struct in6_addr));
516 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
518 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: ");
519 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
521 /* IPv6 not enabled! No "action" needed; just ack it */
522 SCTPDBG(SCTP_DEBUG_ASCONF1,
523 "process_asconf_set_primary: v6 disabled- ignoring: ");
524 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
525 /* just respond with a "success" ASCONF-ACK */
530 m_reply = sctp_asconf_error_response(aph->correlation_id,
531 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph,
536 /* if 0.0.0.0/::0, use the source address instead */
537 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
538 sa = (struct sockaddr *)&sa_source;
539 sctp_asconf_get_source_ip(m, sa);
540 SCTPDBG(SCTP_DEBUG_ASCONF1,
541 "process_asconf_set_primary: using source addr ");
542 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
544 /* set the primary address */
545 if (sctp_set_primary_addr(stcb, sa, NULL) == 0) {
546 SCTPDBG(SCTP_DEBUG_ASCONF1,
547 "process_asconf_set_primary: primary address set\n");
548 /* notify upper layer */
549 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_SET_PRIMARY, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
551 if (response_required) {
552 m_reply = sctp_asconf_success_response(aph->correlation_id);
555 * Mobility adaptation. Ideally, when the reception of SET
556 * PRIMARY with DELETE IP ADDRESS of the previous primary
557 * destination, unacknowledged DATA are retransmitted
558 * immediately to the new primary destination for seamless
559 * handover. If the destination is UNCONFIRMED and marked to
560 * REQ_PRIM, The retransmission occur when reception of the
561 * HEARTBEAT-ACK. (See sctp_handle_heartbeat_ack in
562 * sctp_input.c) Also, when change of the primary
563 * destination, it is better that all subsequent new DATA
564 * containing already queued DATA are transmitted to the new
565 * primary destination. (by micchie)
567 if ((sctp_is_mobility_feature_on(stcb->sctp_ep,
568 SCTP_MOBILITY_BASE) ||
569 sctp_is_mobility_feature_on(stcb->sctp_ep,
570 SCTP_MOBILITY_FASTHANDOFF)) &&
571 sctp_is_mobility_feature_on(stcb->sctp_ep,
572 SCTP_MOBILITY_PRIM_DELETED) &&
573 (stcb->asoc.primary_destination->dest_state &
574 SCTP_ADDR_UNCONFIRMED) == 0) {
576 sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTP_TIMER + SCTP_LOC_7);
577 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
578 SCTP_MOBILITY_FASTHANDOFF)) {
579 sctp_assoc_immediate_retrans(stcb,
580 stcb->asoc.primary_destination);
582 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
583 SCTP_MOBILITY_BASE)) {
584 sctp_move_chunks_from_net(stcb,
585 stcb->asoc.deleted_primary);
587 sctp_delete_prim_timer(stcb->sctp_ep, stcb,
588 stcb->asoc.deleted_primary);
591 /* couldn't set the requested primary address! */
592 SCTPDBG(SCTP_DEBUG_ASCONF1,
593 "process_asconf_set_primary: set primary failed!\n");
594 /* must have been an invalid address, so report */
595 m_reply = sctp_asconf_error_response(aph->correlation_id,
596 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph,
604 * handles an ASCONF chunk.
605 * if all parameters are processed ok, send a plain (empty) ASCONF-ACK
608 sctp_handle_asconf(struct mbuf *m, unsigned int offset,
609 struct sctp_asconf_chunk *cp, struct sctp_tcb *stcb,
612 struct sctp_association *asoc;
614 struct mbuf *n, *m_ack, *m_result, *m_tail;
615 struct sctp_asconf_ack_chunk *ack_cp;
616 struct sctp_asconf_paramhdr *aph, *ack_aph;
617 struct sctp_ipv6addr_param *p_addr;
618 unsigned int asconf_limit;
619 int error = 0; /* did an error occur? */
621 /* asconf param buffer */
622 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
623 struct sctp_asconf_ack *ack, *ack_next;
625 /* verify minimum length */
626 if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_chunk)) {
627 SCTPDBG(SCTP_DEBUG_ASCONF1,
628 "handle_asconf: chunk too small = %xh\n",
629 ntohs(cp->ch.chunk_length));
633 serial_num = ntohl(cp->serial_number);
635 if (compare_with_wrap(asoc->asconf_seq_in, serial_num, MAX_SEQ) ||
636 serial_num == asoc->asconf_seq_in) {
637 /* got a duplicate ASCONF */
638 SCTPDBG(SCTP_DEBUG_ASCONF1,
639 "handle_asconf: got duplicate serial number = %xh\n",
642 } else if (serial_num != (asoc->asconf_seq_in + 1)) {
643 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: incorrect serial number = %xh (expected next = %xh)\n",
644 serial_num, asoc->asconf_seq_in + 1);
647 /* it's the expected "next" sequence number, so process it */
648 asoc->asconf_seq_in = serial_num; /* update sequence */
649 /* get length of all the param's in the ASCONF */
650 asconf_limit = offset + ntohs(cp->ch.chunk_length);
651 SCTPDBG(SCTP_DEBUG_ASCONF1,
652 "handle_asconf: asconf_limit=%u, sequence=%xh\n",
653 asconf_limit, serial_num);
656 /* delete old cache */
657 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: Now processing firstASCONF. Try to delte old cache\n");
659 ack = TAILQ_FIRST(&stcb->asoc.asconf_ack_sent);
660 while (ack != NULL) {
661 ack_next = TAILQ_NEXT(ack, next);
662 if (ack->serial_number == serial_num)
664 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: delete old(%u) < first(%u)\n",
665 ack->serial_number, serial_num);
666 TAILQ_REMOVE(&stcb->asoc.asconf_ack_sent, ack, next);
667 if (ack->data != NULL) {
668 sctp_m_freem(ack->data);
670 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), ack);
674 m_ack = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_ack_chunk), 0,
675 M_DONTWAIT, 1, MT_DATA);
677 SCTPDBG(SCTP_DEBUG_ASCONF1,
678 "handle_asconf: couldn't get mbuf!\n");
681 m_tail = m_ack; /* current reply chain's tail */
683 /* fill in ASCONF-ACK header */
684 ack_cp = mtod(m_ack, struct sctp_asconf_ack_chunk *);
685 ack_cp->ch.chunk_type = SCTP_ASCONF_ACK;
686 ack_cp->ch.chunk_flags = 0;
687 ack_cp->serial_number = htonl(serial_num);
688 /* set initial lengths (eg. just an ASCONF-ACK), ntohx at the end! */
689 SCTP_BUF_LEN(m_ack) = sizeof(struct sctp_asconf_ack_chunk);
690 ack_cp->ch.chunk_length = sizeof(struct sctp_asconf_ack_chunk);
692 /* skip the lookup address parameter */
693 offset += sizeof(struct sctp_asconf_chunk);
694 p_addr = (struct sctp_ipv6addr_param *)sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr), (uint8_t *) & aparam_buf);
695 if (p_addr == NULL) {
696 SCTPDBG(SCTP_DEBUG_ASCONF1,
697 "handle_asconf: couldn't get lookup addr!\n");
698 /* respond with a missing/invalid mandatory parameter error */
701 /* param_length is already validated in process_control... */
702 offset += ntohs(p_addr->ph.param_length); /* skip lookup addr */
704 /* get pointer to first asconf param in ASCONF-ACK */
705 ack_aph = (struct sctp_asconf_paramhdr *)(mtod(m_ack, caddr_t)+sizeof(struct sctp_asconf_ack_chunk));
706 if (ack_aph == NULL) {
707 SCTPDBG(SCTP_DEBUG_ASCONF1, "Gak in asconf2\n");
710 /* get pointer to first asconf param in ASCONF */
711 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, sizeof(struct sctp_asconf_paramhdr), (uint8_t *) & aparam_buf);
713 SCTPDBG(SCTP_DEBUG_ASCONF1, "Empty ASCONF received?\n");
716 /* process through all parameters */
717 while (aph != NULL) {
718 unsigned int param_length, param_type;
720 param_type = ntohs(aph->ph.param_type);
721 param_length = ntohs(aph->ph.param_length);
722 if (offset + param_length > asconf_limit) {
723 /* parameter goes beyond end of chunk! */
729 if (param_length > sizeof(aparam_buf)) {
730 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) larger than buffer size!\n", param_length);
734 if (param_length <= sizeof(struct sctp_paramhdr)) {
735 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) too short\n", param_length);
738 /* get the entire parameter */
739 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf);
741 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: couldn't get entire param\n");
745 switch (param_type) {
746 case SCTP_ADD_IP_ADDRESS:
747 asoc->peer_supports_asconf = 1;
748 m_result = sctp_process_asconf_add_ip(m, aph, stcb,
751 case SCTP_DEL_IP_ADDRESS:
752 asoc->peer_supports_asconf = 1;
753 m_result = sctp_process_asconf_delete_ip(m, aph, stcb,
756 case SCTP_ERROR_CAUSE_IND:
757 /* not valid in an ASCONF chunk */
759 case SCTP_SET_PRIM_ADDR:
760 asoc->peer_supports_asconf = 1;
761 m_result = sctp_process_asconf_set_primary(m, aph,
765 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: sees a NAT VTAG state parameter\n");
767 case SCTP_SUCCESS_REPORT:
768 /* not valid in an ASCONF chunk */
770 case SCTP_ULP_ADAPTATION:
774 if ((param_type & 0x8000) == 0) {
775 /* Been told to STOP at this param */
776 asconf_limit = offset;
778 * FIX FIX - We need to call
779 * sctp_arethere_unrecognized_parameters()
780 * to get a operr and send it for any
781 * param's with the 0x4000 bit set OR do it
782 * here ourselves... note we still must STOP
783 * if the 0x8000 bit is clear.
786 /* unknown/invalid param type */
790 /* add any (error) result to the reply mbuf chain */
791 if (m_result != NULL) {
792 SCTP_BUF_NEXT(m_tail) = m_result;
794 /* update lengths, make sure it's aligned too */
795 SCTP_BUF_LEN(m_result) = SCTP_SIZE32(SCTP_BUF_LEN(m_result));
796 ack_cp->ch.chunk_length += SCTP_BUF_LEN(m_result);
797 /* set flag to force success reports */
800 offset += SCTP_SIZE32(param_length);
801 /* update remaining ASCONF message length to process */
802 if (offset >= asconf_limit) {
803 /* no more data in the mbuf chain */
806 /* get pointer to next asconf param */
807 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset,
808 sizeof(struct sctp_asconf_paramhdr),
809 (uint8_t *) & aparam_buf);
811 /* can't get an asconf paramhdr */
812 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: can't get asconf param hdr!\n");
813 /* FIX ME - add error here... */
818 ack_cp->ch.chunk_length = htons(ack_cp->ch.chunk_length);
819 /* save the ASCONF-ACK reply */
820 ack = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asconf_ack),
821 struct sctp_asconf_ack);
826 ack->serial_number = serial_num;
827 ack->last_sent_to = NULL;
832 ack->len += SCTP_BUF_LEN(n);
833 n = SCTP_BUF_NEXT(n);
835 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_ack_sent, ack, next);
837 /* see if last_control_chunk_from is set properly (use IP src addr) */
838 if (stcb->asoc.last_control_chunk_from == NULL) {
840 * this could happen if the source address was just newly
845 struct sockaddr_storage from_store;
846 struct sockaddr *from = (struct sockaddr *)&from_store;
848 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: looking up net for IP source address\n");
849 /* pullup already done, IP options already stripped */
850 iph = mtod(m, struct ip *);
851 sh = (struct sctphdr *)((caddr_t)iph + sizeof(*iph));
855 struct sockaddr_in *from4;
857 from4 = (struct sockaddr_in *)&from_store;
858 bzero(from4, sizeof(*from4));
859 from4->sin_family = AF_INET;
860 from4->sin_len = sizeof(struct sockaddr_in);
861 from4->sin_addr.s_addr = iph->ip_src.s_addr;
862 from4->sin_port = sh->src_port;
866 case IPV6_VERSION >> 4:
869 struct sockaddr_in6 *from6;
871 ip6 = mtod(m, struct ip6_hdr *);
872 from6 = (struct sockaddr_in6 *)&from_store;
873 bzero(from6, sizeof(*from6));
874 from6->sin6_family = AF_INET6;
875 from6->sin6_len = sizeof(struct sockaddr_in6);
876 from6->sin6_addr = ip6->ip6_src;
877 from6->sin6_port = sh->src_port;
879 * Get the scopes in properly to the sin6
882 /* we probably don't need these operations */
883 (void)sa6_recoverscope(from6);
884 sa6_embedscope(from6,
885 MODULE_GLOBAL(ip6_use_defzone));
891 /* unknown address type */
895 SCTPDBG(SCTP_DEBUG_ASCONF1, "Looking for IP source: ");
896 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, from);
897 /* look up the from address */
898 stcb->asoc.last_control_chunk_from = sctp_findnet(stcb, from);
900 if (stcb->asoc.last_control_chunk_from == NULL)
901 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: IP source address not found?!\n");
908 * does the address match? returns 0 if not, 1 if so
911 sctp_asconf_addr_match(struct sctp_asconf_addr *aa, struct sockaddr *sa)
914 if (sa->sa_family == AF_INET6) {
915 /* IPv6 sa address */
917 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
919 if ((aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) &&
920 (memcmp(&aa->ap.addrp.addr, &sin6->sin6_addr,
921 sizeof(struct in6_addr)) == 0)) {
926 if (sa->sa_family == AF_INET) {
927 /* IPv4 sa address */
928 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
930 if ((aa->ap.addrp.ph.param_type == SCTP_IPV4_ADDRESS) &&
931 (memcmp(&aa->ap.addrp.addr, &sin->sin_addr,
932 sizeof(struct in_addr)) == 0)) {
940 * does the address match? returns 0 if not, 1 if so
944 struct sctp_ipv6addr_param *v6addr,
947 uint16_t param_type, param_length;
948 struct sctp_ipv4addr_param *v4addr = (struct sctp_ipv4addr_param *)v6addr;
951 if (sa->sa_family == AF_INET6) {
952 /* IPv6 sa address */
954 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
956 param_type = ntohs(v6addr->ph.param_type);
957 param_length = ntohs(v6addr->ph.param_length);
959 if ((param_type == SCTP_IPV6_ADDRESS) &&
960 param_length == sizeof(struct sctp_ipv6addr_param) &&
961 (memcmp(&v6addr->addr, &sin6->sin6_addr,
962 sizeof(struct in6_addr)) == 0)) {
967 if (sa->sa_family == AF_INET) {
968 /* IPv4 sa address */
969 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
971 param_type = ntohs(v4addr->ph.param_type);
972 param_length = ntohs(v4addr->ph.param_length);
974 if ((param_type == SCTP_IPV4_ADDRESS) &&
975 param_length == sizeof(struct sctp_ipv4addr_param) &&
976 (memcmp(&v4addr->addr, &sin->sin_addr,
977 sizeof(struct in_addr)) == 0)) {
985 * Cleanup for non-responded/OP ERR'd ASCONF
988 sctp_asconf_cleanup(struct sctp_tcb *stcb, struct sctp_nets *net)
990 /* mark peer as ASCONF incapable */
991 stcb->asoc.peer_supports_asconf = 0;
993 * clear out any existing asconfs going out
995 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net,
996 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_2);
997 stcb->asoc.asconf_seq_out_acked = stcb->asoc.asconf_seq_out;
998 /* remove the old ASCONF on our outbound queue */
999 sctp_toss_old_asconf(stcb);
1003 * cleanup any cached source addresses that may be topologically
1004 * incorrect after a new address has been added to this interface.
1007 sctp_asconf_nets_cleanup(struct sctp_tcb *stcb, struct sctp_ifn *ifn)
1009 struct sctp_nets *net;
1012 * Ideally, we want to only clear cached routes and source addresses
1013 * that are topologically incorrect. But since there is no easy way
1014 * to know whether the newly added address on the ifn would cause a
1015 * routing change (i.e. a new egress interface would be chosen)
1016 * without doing a new routing lookup and source address selection,
1017 * we will (for now) just flush any cached route using a different
1018 * ifn (and cached source addrs) and let output re-choose them
1019 * during the next send on that net.
1021 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1023 * clear any cached route (and cached source address) if the
1024 * route's interface is NOT the same as the address change.
1025 * If it's the same interface, just clear the cached source
1028 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro) &&
1030 (SCTP_GET_IF_INDEX_FROM_ROUTE(&net->ro) != ifn->ifn_index))) {
1031 /* clear any cached route */
1032 RTFREE(net->ro.ro_rt);
1033 net->ro.ro_rt = NULL;
1035 /* clear any cached source address */
1036 if (net->src_addr_selected) {
1037 sctp_free_ifa(net->ro._s_addr);
1038 net->ro._s_addr = NULL;
1039 net->src_addr_selected = 0;
1046 sctp_assoc_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *dstnet)
1050 if (dstnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
1053 if (stcb->asoc.deleted_primary == NULL) {
1056 if (!TAILQ_EMPTY(&stcb->asoc.sent_queue)) {
1057 SCTPDBG(SCTP_DEBUG_ASCONF1, "assoc_immediate_retrans: Deleted primary is ");
1058 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.deleted_primary->ro._l_addr.sa);
1059 SCTPDBG(SCTP_DEBUG_ASCONF1, "Current Primary is ");
1060 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.primary_destination->ro._l_addr.sa);
1061 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb,
1062 stcb->asoc.deleted_primary,
1063 SCTP_FROM_SCTP_TIMER + SCTP_LOC_8);
1064 stcb->asoc.num_send_timers_up--;
1065 if (stcb->asoc.num_send_timers_up < 0) {
1066 stcb->asoc.num_send_timers_up = 0;
1068 SCTP_TCB_LOCK_ASSERT(stcb);
1069 error = sctp_t3rxt_timer(stcb->sctp_ep, stcb,
1070 stcb->asoc.deleted_primary);
1072 SCTP_INP_DECR_REF(stcb->sctp_ep);
1075 SCTP_TCB_LOCK_ASSERT(stcb);
1076 #ifdef SCTP_AUDITING_ENABLED
1077 sctp_auditing(4, stcb->sctp_ep, stcb, stcb->asoc.deleted_primary);
1079 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1080 if ((stcb->asoc.num_send_timers_up == 0) &&
1081 (stcb->asoc.sent_queue_cnt > 0)) {
1082 struct sctp_tmit_chunk *chk;
1084 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1085 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep,
1093 sctp_asconf_queue_mgmt(struct sctp_tcb *, struct sctp_ifa *, uint16_t);
1096 sctp_net_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *net)
1098 struct sctp_tmit_chunk *chk;
1100 SCTPDBG(SCTP_DEBUG_ASCONF1, "net_immediate_retrans: RTO is %d\n", net->RTO);
1101 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net,
1102 SCTP_FROM_SCTP_TIMER + SCTP_LOC_5);
1103 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
1104 net->error_count = 0;
1105 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
1106 if (chk->whoTo == net) {
1107 if (chk->sent < SCTP_DATAGRAM_RESEND) {
1108 chk->sent = SCTP_DATAGRAM_RESEND;
1109 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
1110 sctp_flight_size_decrease(chk);
1111 sctp_total_flight_decrease(stcb, chk);
1112 net->marked_retrans++;
1113 stcb->asoc.marked_retrans++;
1117 if (net->marked_retrans) {
1118 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1123 sctp_path_check_and_react(struct sctp_tcb *stcb, struct sctp_ifa *newifa)
1125 struct sctp_nets *net;
1126 int addrnum, changed;
1129 * If number of local valid addresses is 1, the valid address is
1130 * probably newly added address. Several valid addresses in this
1131 * association. A source address may not be changed. Additionally,
1132 * they can be configured on a same interface as "alias" addresses.
1135 addrnum = sctp_local_addr_count(stcb);
1136 SCTPDBG(SCTP_DEBUG_ASCONF1, "p_check_react(): %d local addresses\n",
1139 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1140 /* clear any cached route and source address */
1141 if (net->ro.ro_rt) {
1142 RTFREE(net->ro.ro_rt);
1143 net->ro.ro_rt = NULL;
1145 if (net->src_addr_selected) {
1146 sctp_free_ifa(net->ro._s_addr);
1147 net->ro._s_addr = NULL;
1148 net->src_addr_selected = 0;
1150 /* Retransmit unacknowledged DATA chunks immediately */
1151 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1152 SCTP_MOBILITY_FASTHANDOFF)) {
1153 sctp_net_immediate_retrans(stcb, net);
1155 /* also, SET PRIMARY is maybe already sent */
1159 /* Multiple local addresses exsist in the association. */
1160 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1161 /* clear any cached route and source address */
1162 if (net->ro.ro_rt) {
1163 RTFREE(net->ro.ro_rt);
1164 net->ro.ro_rt = NULL;
1166 if (net->src_addr_selected) {
1167 sctp_free_ifa(net->ro._s_addr);
1168 net->ro._s_addr = NULL;
1169 net->src_addr_selected = 0;
1172 * Check if the nexthop is corresponding to the new address.
1173 * If the new address is corresponding to the current
1174 * nexthop, the path will be changed. If the new address is
1175 * NOT corresponding to the current nexthop, the path will
1178 SCTP_RTALLOC((sctp_route_t *) & net->ro,
1179 stcb->sctp_ep->def_vrf_id);
1180 if (net->ro.ro_rt == NULL)
1184 if (net->ro._l_addr.sa.sa_family == AF_INET) {
1185 if (sctp_v4src_match_nexthop(newifa, (sctp_route_t *) & net->ro))
1189 if (net->ro._l_addr.sa.sa_family == AF_INET6) {
1190 if (sctp_v6src_match_nexthop(
1191 &newifa->address.sin6, (sctp_route_t *) & net->ro))
1196 * if the newly added address does not relate routing
1197 * information, we skip.
1201 /* Retransmit unacknowledged DATA chunks immediately */
1202 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1203 SCTP_MOBILITY_FASTHANDOFF)) {
1204 sctp_net_immediate_retrans(stcb, net);
1206 /* Send SET PRIMARY for this new address */
1207 if (net == stcb->asoc.primary_destination) {
1208 (void)sctp_asconf_queue_mgmt(stcb, newifa,
1209 SCTP_SET_PRIM_ADDR);
1215 * process an ADD/DELETE IP ack from peer.
1216 * addr: corresponding sctp_ifa to the address being added/deleted.
1217 * type: SCTP_ADD_IP_ADDRESS or SCTP_DEL_IP_ADDRESS.
1218 * flag: 1=success, 0=failure.
1221 sctp_asconf_addr_mgmt_ack(struct sctp_tcb *stcb, struct sctp_ifa *addr,
1222 uint16_t type, uint32_t flag)
1225 * do the necessary asoc list work- if we get a failure indication,
1226 * leave the address on the assoc's restricted list. If we get a
1227 * success indication, remove the address from the restricted list.
1230 * Note: this will only occur for ADD_IP_ADDRESS, since
1231 * DEL_IP_ADDRESS is never actually added to the list...
1234 /* success case, so remove from the restricted list */
1235 sctp_del_local_addr_restricted(stcb, addr);
1237 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1238 SCTP_MOBILITY_BASE) ||
1239 sctp_is_mobility_feature_on(stcb->sctp_ep,
1240 SCTP_MOBILITY_FASTHANDOFF)) {
1241 sctp_path_check_and_react(stcb, addr);
1244 /* clear any cached/topologically incorrect source addresses */
1245 sctp_asconf_nets_cleanup(stcb, addr->ifn_p);
1247 /* else, leave it on the list */
1251 * add an asconf add/delete/set primary IP address parameter to the queue.
1252 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1253 * returns 0 if queued, -1 if not queued/removed.
1254 * NOTE: if adding, but a delete for the same address is already scheduled
1255 * (and not yet sent out), simply remove it from queue. Same for deleting
1256 * an address already scheduled for add. If a duplicate operation is found,
1257 * ignore the new one.
1260 sctp_asconf_queue_mgmt(struct sctp_tcb *stcb, struct sctp_ifa *ifa,
1263 struct sctp_asconf_addr *aa, *aa_next;
1264 struct sockaddr *sa;
1266 /* make sure the request isn't already in the queue */
1267 for (aa = TAILQ_FIRST(&stcb->asoc.asconf_queue); aa != NULL;
1269 aa_next = TAILQ_NEXT(aa, next);
1270 /* address match? */
1271 if (sctp_asconf_addr_match(aa, &ifa->address.sa) == 0)
1274 * is the request already in queue but not sent? pass the
1275 * request already sent in order to resolve the following
1276 * case: 1. arrival of ADD, then sent 2. arrival of DEL. we
1277 * can't remove the ADD request already sent 3. arrival of
1280 if (aa->ap.aph.ph.param_type == type && aa->sent == 0) {
1283 /* is the negative request already in queue, and not sent */
1284 if ((aa->sent == 0) && (type == SCTP_ADD_IP_ADDRESS) &&
1285 (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS)) {
1286 /* add requested, delete already queued */
1287 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1288 /* remove the ifa from the restricted list */
1289 sctp_del_local_addr_restricted(stcb, ifa);
1290 /* free the asconf param */
1291 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1292 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: add removes queued entry\n");
1295 if ((aa->sent == 0) && (type == SCTP_DEL_IP_ADDRESS) &&
1296 (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS)) {
1297 /* delete requested, add already queued */
1298 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1299 /* remove the aa->ifa from the restricted list */
1300 sctp_del_local_addr_restricted(stcb, aa->ifa);
1301 /* free the asconf param */
1302 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1303 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: delete removes queued entry\n");
1308 /* adding new request to the queue */
1309 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
1312 /* didn't get memory */
1313 SCTPDBG(SCTP_DEBUG_ASCONF1, "asconf_queue_mgmt: failed to get memory!\n");
1316 aa->special_del = 0;
1317 /* fill in asconf address parameter fields */
1318 /* top level elements are "networked" during send */
1319 aa->ap.aph.ph.param_type = type;
1321 atomic_add_int(&ifa->refcount, 1);
1322 /* correlation_id filled in during send routine later... */
1323 if (ifa->address.sa.sa_family == AF_INET6) {
1325 struct sockaddr_in6 *sin6;
1327 sin6 = (struct sockaddr_in6 *)&ifa->address.sa;
1328 sa = (struct sockaddr *)sin6;
1329 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
1330 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param));
1331 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) +
1332 sizeof(struct sctp_ipv6addr_param);
1333 memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr,
1334 sizeof(struct in6_addr));
1335 } else if (ifa->address.sa.sa_family == AF_INET) {
1337 struct sockaddr_in *sin;
1339 sin = (struct sockaddr_in *)&ifa->address.sa;
1340 sa = (struct sockaddr *)sin;
1341 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
1342 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param));
1343 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) +
1344 sizeof(struct sctp_ipv4addr_param);
1345 memcpy(&aa->ap.addrp.addr, &sin->sin_addr,
1346 sizeof(struct in_addr));
1348 /* invalid family! */
1349 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1353 aa->sent = 0; /* clear sent flag */
1355 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
1357 if (SCTP_BASE_SYSCTL(sctp_debug_on) && SCTP_DEBUG_ASCONF2) {
1358 if (type == SCTP_ADD_IP_ADDRESS) {
1359 SCTP_PRINTF("asconf_queue_mgmt: inserted asconf ADD_IP_ADDRESS: ");
1360 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, sa);
1361 } else if (type == SCTP_DEL_IP_ADDRESS) {
1362 SCTP_PRINTF("asconf_queue_mgmt: appended asconf DEL_IP_ADDRESS: ");
1363 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, sa);
1365 SCTP_PRINTF("asconf_queue_mgmt: appended asconf SET_PRIM_ADDR: ");
1366 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, sa);
1376 * add an asconf operation for the given ifa and type.
1377 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1378 * returns 0 if completed, -1 if not completed, 1 if immediate send is
1382 sctp_asconf_queue_add(struct sctp_tcb *stcb, struct sctp_ifa *ifa,
1386 int pending_delete_queued = 0;
1388 /* see if peer supports ASCONF */
1389 if (stcb->asoc.peer_supports_asconf == 0) {
1393 * if this is deleting the last address from the assoc, mark it as
1396 if ((type == SCTP_DEL_IP_ADDRESS) && !stcb->asoc.asconf_del_pending &&
1397 (sctp_local_addr_count(stcb) < 2)) {
1398 /* set the pending delete info only */
1399 stcb->asoc.asconf_del_pending = 1;
1400 stcb->asoc.asconf_addr_del_pending = ifa;
1401 atomic_add_int(&ifa->refcount, 1);
1402 SCTPDBG(SCTP_DEBUG_ASCONF2,
1403 "asconf_queue_add: mark delete last address pending\n");
1406 /* queue an asconf parameter */
1407 status = sctp_asconf_queue_mgmt(stcb, ifa, type);
1410 * if this is an add, and there is a delete also pending (i.e. the
1411 * last local address is being changed), queue the pending delete
1414 if ((type == SCTP_ADD_IP_ADDRESS) && stcb->asoc.asconf_del_pending && (status == 0)) {
1415 /* queue in the pending delete */
1416 if (sctp_asconf_queue_mgmt(stcb,
1417 stcb->asoc.asconf_addr_del_pending,
1418 SCTP_DEL_IP_ADDRESS) == 0) {
1419 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_add: queing pending delete\n");
1420 pending_delete_queued = 1;
1421 /* clear out the pending delete info */
1422 stcb->asoc.asconf_del_pending = 0;
1423 sctp_free_ifa(stcb->asoc.asconf_addr_del_pending);
1424 stcb->asoc.asconf_addr_del_pending = NULL;
1427 if (pending_delete_queued) {
1428 struct sctp_nets *net;
1431 * since we know that the only/last address is now being
1432 * changed in this case, reset the cwnd/rto on all nets to
1433 * start as a new address and path. Also clear the error
1434 * counts to give the assoc the best chance to complete the
1437 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1438 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb,
1441 net->error_count = 0;
1443 stcb->asoc.overall_error_count = 0;
1444 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) {
1445 sctp_misc_ints(SCTP_THRESHOLD_CLEAR,
1446 stcb->asoc.overall_error_count,
1448 SCTP_FROM_SCTP_ASCONF,
1451 /* queue in an advisory set primary too */
1452 (void)sctp_asconf_queue_mgmt(stcb, ifa, SCTP_SET_PRIM_ADDR);
1453 /* let caller know we should send this out immediately */
1460 * add an asconf delete IP address parameter to the queue by sockaddr and
1461 * possibly with no sctp_ifa available. This is only called by the routine
1462 * that checks the addresses in an INIT-ACK against the current address list.
1463 * returns 0 if completed, non-zero if not completed.
1464 * NOTE: if an add is already scheduled (and not yet sent out), simply
1465 * remove it from queue. If a duplicate operation is found, ignore the
1469 sctp_asconf_queue_sa_delete(struct sctp_tcb *stcb, struct sockaddr *sa)
1471 struct sctp_ifa *ifa;
1472 struct sctp_asconf_addr *aa, *aa_next;
1478 /* see if peer supports ASCONF */
1479 if (stcb->asoc.peer_supports_asconf == 0) {
1482 /* make sure the request isn't already in the queue */
1483 for (aa = TAILQ_FIRST(&stcb->asoc.asconf_queue); aa != NULL;
1485 aa_next = TAILQ_NEXT(aa, next);
1486 /* address match? */
1487 if (sctp_asconf_addr_match(aa, sa) == 0)
1489 /* is the request already in queue (sent or not) */
1490 if (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) {
1493 /* is the negative request already in queue, and not sent */
1496 if (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS) {
1497 /* add already queued, so remove existing entry */
1498 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1499 sctp_del_local_addr_restricted(stcb, aa->ifa);
1500 /* free the entry */
1501 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1506 /* find any existing ifa-- NOTE ifa CAN be allowed to be NULL */
1508 vrf_id = stcb->asoc.vrf_id;
1510 vrf_id = SCTP_DEFAULT_VRFID;
1512 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
1514 /* adding new request to the queue */
1515 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
1518 /* didn't get memory */
1519 SCTPDBG(SCTP_DEBUG_ASCONF1,
1520 "sctp_asconf_queue_sa_delete: failed to get memory!\n");
1523 aa->special_del = 0;
1524 /* fill in asconf address parameter fields */
1525 /* top level elements are "networked" during send */
1526 aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS;
1529 atomic_add_int(&ifa->refcount, 1);
1530 /* correlation_id filled in during send routine later... */
1531 if (sa->sa_family == AF_INET6) {
1533 struct sockaddr_in6 *sin6;
1535 sin6 = (struct sockaddr_in6 *)sa;
1536 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
1537 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param));
1538 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv6addr_param);
1539 memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr,
1540 sizeof(struct in6_addr));
1541 } else if (sa->sa_family == AF_INET) {
1543 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
1545 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
1546 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param));
1547 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv4addr_param);
1548 memcpy(&aa->ap.addrp.addr, &sin->sin_addr,
1549 sizeof(struct in_addr));
1551 /* invalid family! */
1552 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1557 aa->sent = 0; /* clear sent flag */
1559 /* delete goes to the back of the queue */
1560 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
1562 /* sa_ignore MEMLEAK {memory is put on the tailq} */
1567 * find a specific asconf param on our "sent" queue
1569 static struct sctp_asconf_addr *
1570 sctp_asconf_find_param(struct sctp_tcb *stcb, uint32_t correlation_id)
1572 struct sctp_asconf_addr *aa;
1574 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
1575 if (aa->ap.aph.correlation_id == correlation_id &&
1581 /* didn't find it */
1586 * process an SCTP_ERROR_CAUSE_IND for a ASCONF-ACK parameter and do
1587 * notifications based on the error response
1590 sctp_asconf_process_error(struct sctp_tcb *stcb,
1591 struct sctp_asconf_paramhdr *aph)
1593 struct sctp_error_cause *eh;
1594 struct sctp_paramhdr *ph;
1595 uint16_t param_type;
1596 uint16_t error_code;
1598 eh = (struct sctp_error_cause *)(aph + 1);
1599 ph = (struct sctp_paramhdr *)(eh + 1);
1600 /* validate lengths */
1601 if (htons(eh->length) + sizeof(struct sctp_error_cause) >
1602 htons(aph->ph.param_length)) {
1603 /* invalid error cause length */
1604 SCTPDBG(SCTP_DEBUG_ASCONF1,
1605 "asconf_process_error: cause element too long\n");
1608 if (htons(ph->param_length) + sizeof(struct sctp_paramhdr) >
1609 htons(eh->length)) {
1610 /* invalid included TLV length */
1611 SCTPDBG(SCTP_DEBUG_ASCONF1,
1612 "asconf_process_error: included TLV too long\n");
1615 /* which error code ? */
1616 error_code = ntohs(eh->code);
1617 param_type = ntohs(aph->ph.param_type);
1618 /* FIX: this should go back up the REMOTE_ERROR ULP notify */
1619 switch (error_code) {
1620 case SCTP_CAUSE_RESOURCE_SHORTAGE:
1621 /* we allow ourselves to "try again" for this error */
1624 /* peer can't handle it... */
1625 switch (param_type) {
1626 case SCTP_ADD_IP_ADDRESS:
1627 case SCTP_DEL_IP_ADDRESS:
1628 stcb->asoc.peer_supports_asconf = 0;
1630 case SCTP_SET_PRIM_ADDR:
1631 stcb->asoc.peer_supports_asconf = 0;
1640 * process an asconf queue param.
1641 * aparam: parameter to process, will be removed from the queue.
1642 * flag: 1=success case, 0=failure case
1645 sctp_asconf_process_param_ack(struct sctp_tcb *stcb,
1646 struct sctp_asconf_addr *aparam, uint32_t flag)
1648 uint16_t param_type;
1650 /* process this param */
1651 param_type = aparam->ap.aph.ph.param_type;
1652 switch (param_type) {
1653 case SCTP_ADD_IP_ADDRESS:
1654 SCTPDBG(SCTP_DEBUG_ASCONF1,
1655 "process_param_ack: added IP address\n");
1656 sctp_asconf_addr_mgmt_ack(stcb, aparam->ifa, param_type, flag);
1658 case SCTP_DEL_IP_ADDRESS:
1659 SCTPDBG(SCTP_DEBUG_ASCONF1,
1660 "process_param_ack: deleted IP address\n");
1661 /* nothing really to do... lists already updated */
1663 case SCTP_SET_PRIM_ADDR:
1664 SCTPDBG(SCTP_DEBUG_ASCONF1,
1665 "process_param_ack: set primary IP address\n");
1666 /* nothing to do... peer may start using this addr */
1668 stcb->asoc.peer_supports_asconf = 0;
1671 /* should NEVER happen */
1675 /* remove the param and free it */
1676 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aparam, next);
1678 sctp_free_ifa(aparam->ifa);
1679 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
1683 * cleanup from a bad asconf ack parameter
1686 sctp_asconf_ack_clear(struct sctp_tcb *stcb)
1688 /* assume peer doesn't really know how to do asconfs */
1689 stcb->asoc.peer_supports_asconf = 0;
1690 /* XXX we could free the pending queue here */
1694 sctp_handle_asconf_ack(struct mbuf *m, int offset,
1695 struct sctp_asconf_ack_chunk *cp, struct sctp_tcb *stcb,
1696 struct sctp_nets *net, int *abort_no_unlock)
1698 struct sctp_association *asoc;
1699 uint32_t serial_num;
1700 uint16_t ack_length;
1701 struct sctp_asconf_paramhdr *aph;
1702 struct sctp_asconf_addr *aa, *aa_next;
1703 uint32_t last_error_id = 0; /* last error correlation id */
1705 struct sctp_asconf_addr *ap;
1707 /* asconf param buffer */
1708 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
1710 /* verify minimum length */
1711 if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_ack_chunk)) {
1712 SCTPDBG(SCTP_DEBUG_ASCONF1,
1713 "handle_asconf_ack: chunk too small = %xh\n",
1714 ntohs(cp->ch.chunk_length));
1718 serial_num = ntohl(cp->serial_number);
1721 * NOTE: we may want to handle this differently- currently, we will
1722 * abort when we get an ack for the expected serial number + 1 (eg.
1723 * we didn't send it), process an ack normally if it is the expected
1724 * serial number, and re-send the previous ack for *ALL* other
1729 * if the serial number is the next expected, but I didn't send it,
1730 * abort the asoc, since someone probably just hijacked us...
1732 if (serial_num == (asoc->asconf_seq_out + 1)) {
1733 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got unexpected next serial number! Aborting asoc!\n");
1734 sctp_abort_an_association(stcb->sctp_ep, stcb,
1735 SCTP_CAUSE_ILLEGAL_ASCONF_ACK, NULL, SCTP_SO_NOT_LOCKED);
1736 *abort_no_unlock = 1;
1739 if (serial_num != asoc->asconf_seq_out_acked + 1) {
1740 /* got a duplicate/unexpected ASCONF-ACK */
1741 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got duplicate/unexpected serial number = %xh (expected = %xh)\n",
1742 serial_num, asoc->asconf_seq_out_acked + 1);
1745 if (serial_num == asoc->asconf_seq_out - 1) {
1746 /* stop our timer */
1747 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net,
1748 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_3);
1750 /* process the ASCONF-ACK contents */
1751 ack_length = ntohs(cp->ch.chunk_length) -
1752 sizeof(struct sctp_asconf_ack_chunk);
1753 offset += sizeof(struct sctp_asconf_ack_chunk);
1754 /* process through all parameters */
1755 while (ack_length >= sizeof(struct sctp_asconf_paramhdr)) {
1756 unsigned int param_length, param_type;
1758 /* get pointer to next asconf parameter */
1759 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset,
1760 sizeof(struct sctp_asconf_paramhdr), aparam_buf);
1762 /* can't get an asconf paramhdr */
1763 sctp_asconf_ack_clear(stcb);
1766 param_type = ntohs(aph->ph.param_type);
1767 param_length = ntohs(aph->ph.param_length);
1768 if (param_length > ack_length) {
1769 sctp_asconf_ack_clear(stcb);
1772 if (param_length < sizeof(struct sctp_paramhdr)) {
1773 sctp_asconf_ack_clear(stcb);
1776 /* get the complete parameter... */
1777 if (param_length > sizeof(aparam_buf)) {
1778 SCTPDBG(SCTP_DEBUG_ASCONF1,
1779 "param length (%u) larger than buffer size!\n", param_length);
1780 sctp_asconf_ack_clear(stcb);
1783 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf);
1785 sctp_asconf_ack_clear(stcb);
1788 /* correlation_id is transparent to peer, no ntohl needed */
1789 id = aph->correlation_id;
1791 switch (param_type) {
1792 case SCTP_ERROR_CAUSE_IND:
1794 /* find the corresponding asconf param in our queue */
1795 ap = sctp_asconf_find_param(stcb, id);
1797 /* hmm... can't find this in our queue! */
1800 /* process the parameter, failed flag */
1801 sctp_asconf_process_param_ack(stcb, ap, 0);
1802 /* process the error response */
1803 sctp_asconf_process_error(stcb, aph);
1805 case SCTP_SUCCESS_REPORT:
1806 /* find the corresponding asconf param in our queue */
1807 ap = sctp_asconf_find_param(stcb, id);
1809 /* hmm... can't find this in our queue! */
1812 /* process the parameter, success flag */
1813 sctp_asconf_process_param_ack(stcb, ap, 1);
1819 /* update remaining ASCONF-ACK message length to process */
1820 ack_length -= SCTP_SIZE32(param_length);
1821 if (ack_length <= 0) {
1822 /* no more data in the mbuf chain */
1825 offset += SCTP_SIZE32(param_length);
1829 * if there are any "sent" params still on the queue, these are
1830 * implicitly "success", or "failed" (if we got an error back) ...
1831 * so process these appropriately
1833 * we assume that the correlation_id's are monotonically increasing
1834 * beginning from 1 and that we don't have *that* many outstanding
1837 if (last_error_id == 0)
1838 last_error_id--;/* set to "max" value */
1839 for (aa = TAILQ_FIRST(&stcb->asoc.asconf_queue); aa != NULL;
1841 aa_next = TAILQ_NEXT(aa, next);
1842 if (aa->sent == 1) {
1844 * implicitly successful or failed if correlation_id
1845 * < last_error_id, then success else, failure
1847 if (aa->ap.aph.correlation_id < last_error_id)
1848 sctp_asconf_process_param_ack(stcb, aa, 1);
1850 sctp_asconf_process_param_ack(stcb, aa, 0);
1853 * since we always process in order (FIFO queue) if
1854 * we reach one that hasn't been sent, the rest
1855 * should not have been sent either. so, we're
1862 /* update the next sequence number to use */
1863 asoc->asconf_seq_out_acked++;
1864 /* remove the old ASCONF on our outbound queue */
1865 sctp_toss_old_asconf(stcb);
1866 if (!TAILQ_EMPTY(&stcb->asoc.asconf_queue)) {
1867 #ifdef SCTP_TIMER_BASED_ASCONF
1868 /* we have more params, so restart our timer */
1869 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep,
1872 /* we have more params, so send out more */
1873 sctp_send_asconf(stcb, net, SCTP_ADDR_NOT_LOCKED);
1880 sctp_is_scopeid_in_nets(struct sctp_tcb *stcb, struct sockaddr *sa)
1882 struct sockaddr_in6 *sin6, *net6;
1883 struct sctp_nets *net;
1885 if (sa->sa_family != AF_INET6) {
1889 sin6 = (struct sockaddr_in6 *)sa;
1890 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) == 0) {
1891 /* not link local address */
1894 /* hunt through our destination nets list for this scope_id */
1895 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1896 if (((struct sockaddr *)(&net->ro._l_addr))->sa_family !=
1899 net6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1900 if (IN6_IS_ADDR_LINKLOCAL(&net6->sin6_addr) == 0)
1902 if (sctp_is_same_scope(sin6, net6)) {
1907 /* didn't find one */
1914 * address management functions
1917 sctp_addr_mgmt_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1918 struct sctp_ifa *ifa, uint16_t type, int addr_locked)
1923 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0 &&
1924 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
1925 /* subset bound, no ASCONF allowed case, so ignore */
1929 * note: we know this is not the subset bound, no ASCONF case eg.
1930 * this is boundall or subset bound w/ASCONF allowed
1933 /* first, make sure it's a good address family */
1934 if (ifa->address.sa.sa_family != AF_INET6 &&
1935 ifa->address.sa.sa_family != AF_INET) {
1938 /* make sure we're "allowed" to add this type of addr */
1939 if (ifa->address.sa.sa_family == AF_INET6) {
1940 /* invalid if we're not a v6 endpoint */
1941 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0)
1943 /* is the v6 addr really valid ? */
1944 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
1948 /* put this address on the "pending/do not use yet" list */
1949 sctp_add_local_addr_restricted(stcb, ifa);
1951 * check address scope if address is out of scope, don't queue
1952 * anything... note: this would leave the address on both inp and
1955 switch (ifa->address.sa.sa_family) {
1959 struct sockaddr_in6 *sin6;
1961 sin6 = (struct sockaddr_in6 *)&ifa->address.sin6;
1962 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1963 /* we skip unspecifed addresses */
1966 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1967 if (stcb->asoc.local_scope == 0) {
1970 /* is it the right link local scope? */
1971 if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) {
1975 if (stcb->asoc.site_scope == 0 &&
1976 IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
1984 struct sockaddr_in *sin;
1985 struct in6pcb *inp6;
1987 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
1988 /* invalid if we are a v6 only endpoint */
1989 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1990 SCTP_IPV6_V6ONLY(inp6))
1993 sin = (struct sockaddr_in *)&ifa->address.sa;
1994 if (sin->sin_addr.s_addr == 0) {
1995 /* we skip unspecifed addresses */
1998 if (stcb->asoc.ipv4_local_scope == 0 &&
1999 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
2005 /* else, not AF_INET or AF_INET6, so skip */
2009 /* queue an asconf for this address add/delete */
2010 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
2011 /* does the peer do asconf? */
2012 if (stcb->asoc.peer_supports_asconf) {
2013 /* queue an asconf for this addr */
2014 status = sctp_asconf_queue_add(stcb, ifa, type);
2017 * if queued ok, and in the open state, send out the
2018 * ASCONF. If in the non-open state, these will be
2019 * sent when the state goes open.
2022 SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) {
2023 #ifdef SCTP_TIMER_BASED_ASCONF
2024 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp,
2025 stcb, stcb->asoc.primary_destination);
2027 sctp_send_asconf(stcb, stcb->asoc.primary_destination,
2037 sctp_asconf_iterator_ep(struct sctp_inpcb *inp, void *ptr, uint32_t val)
2039 struct sctp_asconf_iterator *asc;
2040 struct sctp_ifa *ifa;
2041 struct sctp_laddr *l;
2042 int cnt_invalid = 0;
2044 asc = (struct sctp_asconf_iterator *)ptr;
2045 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2047 if (ifa->address.sa.sa_family == AF_INET6) {
2048 /* invalid if we're not a v6 endpoint */
2049 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
2051 if (asc->cnt == cnt_invalid)
2056 } else if (ifa->address.sa.sa_family == AF_INET) {
2057 /* invalid if we are a v6 only endpoint */
2058 struct in6pcb *inp6;
2060 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
2061 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2062 SCTP_IPV6_V6ONLY(inp6)) {
2064 if (asc->cnt == cnt_invalid)
2070 /* invalid address family */
2072 if (asc->cnt == cnt_invalid)
2082 sctp_asconf_iterator_ep_end(struct sctp_inpcb *inp, void *ptr, uint32_t val)
2084 struct sctp_ifa *ifa;
2085 struct sctp_asconf_iterator *asc;
2086 struct sctp_laddr *laddr, *nladdr, *l;
2088 /* Only for specific case not bound all */
2089 asc = (struct sctp_asconf_iterator *)ptr;
2090 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2092 if (l->action == SCTP_ADD_IP_ADDRESS) {
2093 LIST_FOREACH(laddr, &inp->sctp_addr_list,
2095 if (laddr->ifa == ifa) {
2100 } else if (l->action == SCTP_DEL_IP_ADDRESS) {
2101 laddr = LIST_FIRST(&inp->sctp_addr_list);
2103 nladdr = LIST_NEXT(laddr, sctp_nxt_addr);
2104 /* remove only after all guys are done */
2105 if (laddr->ifa == ifa) {
2106 sctp_del_local_addr_ep(inp, ifa);
2116 sctp_asconf_iterator_stcb(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2117 void *ptr, uint32_t val)
2119 struct sctp_asconf_iterator *asc;
2120 struct sctp_ifa *ifa;
2121 struct sctp_laddr *l;
2122 int cnt_invalid = 0;
2126 asc = (struct sctp_asconf_iterator *)ptr;
2127 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2131 /* address's vrf_id must be the vrf_id of the assoc */
2132 if (ifa->vrf_id != stcb->asoc.vrf_id) {
2135 /* Same checks again for assoc */
2136 switch (ifa->address.sa.sa_family) {
2140 /* invalid if we're not a v6 endpoint */
2141 struct sockaddr_in6 *sin6;
2143 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
2145 if (asc->cnt == cnt_invalid)
2150 sin6 = (struct sockaddr_in6 *)&ifa->address.sin6;
2151 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2152 /* we skip unspecifed addresses */
2155 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
2156 if (stcb->asoc.local_scope == 0) {
2159 /* is it the right link local scope? */
2160 if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) {
2169 /* invalid if we are a v6 only endpoint */
2170 struct in6pcb *inp6;
2171 struct sockaddr_in *sin;
2173 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
2174 /* invalid if we are a v6 only endpoint */
2175 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2176 SCTP_IPV6_V6ONLY(inp6))
2179 sin = (struct sockaddr_in *)&ifa->address.sa;
2180 if (sin->sin_addr.s_addr == 0) {
2181 /* we skip unspecifed addresses */
2184 if (stcb->asoc.ipv4_local_scope == 0 &&
2185 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
2188 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2189 SCTP_IPV6_V6ONLY(inp6)) {
2191 if (asc->cnt == cnt_invalid)
2199 /* invalid address family */
2201 if (asc->cnt == cnt_invalid)
2208 if (type == SCTP_ADD_IP_ADDRESS) {
2209 /* prevent this address from being used as a source */
2210 sctp_add_local_addr_restricted(stcb, ifa);
2211 } else if (type == SCTP_DEL_IP_ADDRESS) {
2212 struct sctp_nets *net;
2214 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2217 /* delete this address if cached */
2218 if (net->ro._s_addr == ifa) {
2219 sctp_free_ifa(net->ro._s_addr);
2220 net->ro._s_addr = NULL;
2221 net->src_addr_selected = 0;
2225 net->ro.ro_rt = NULL;
2228 * Now we deleted our src address,
2229 * should we not also now reset the
2230 * cwnd/rto to start as if its a new
2233 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
2238 } else if (type == SCTP_SET_PRIM_ADDR) {
2239 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2240 /* must validate the ifa is in the ep */
2241 if (sctp_is_addr_in_ep(stcb->sctp_ep, ifa) == 0) {
2245 /* Need to check scopes for this guy */
2246 if (sctp_is_address_in_scope(ifa,
2247 stcb->asoc.ipv4_addr_legal,
2248 stcb->asoc.ipv6_addr_legal,
2249 stcb->asoc.loopback_scope,
2250 stcb->asoc.ipv4_local_scope,
2251 stcb->asoc.local_scope,
2252 stcb->asoc.site_scope, 0) == 0) {
2257 /* queue an asconf for this address add/delete */
2258 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF) &&
2259 stcb->asoc.peer_supports_asconf) {
2260 /* queue an asconf for this addr */
2261 status = sctp_asconf_queue_add(stcb, ifa, type);
2263 * if queued ok, and in the open state, update the
2264 * count of queued params. If in the non-open
2265 * state, these get sent when the assoc goes open.
2267 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) {
2275 * If we have queued params in the open state, send out an ASCONF.
2277 if (num_queued > 0) {
2278 sctp_send_asconf(stcb, stcb->asoc.primary_destination,
2279 SCTP_ADDR_NOT_LOCKED);
2284 sctp_asconf_iterator_end(void *ptr, uint32_t val)
2286 struct sctp_asconf_iterator *asc;
2287 struct sctp_ifa *ifa;
2288 struct sctp_laddr *l, *l_next;
2290 asc = (struct sctp_asconf_iterator *)ptr;
2291 l = LIST_FIRST(&asc->list_of_work);
2293 l_next = LIST_NEXT(l, sctp_nxt_addr);
2295 if (l->action == SCTP_ADD_IP_ADDRESS) {
2296 /* Clear the defer use flag */
2297 ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
2300 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), l);
2301 SCTP_DECR_LADDR_COUNT();
2304 SCTP_FREE(asc, SCTP_M_ASC_IT);
2308 * sa is the sockaddr to ask the peer to set primary to.
2309 * returns: 0 = completed, -1 = error
2312 sctp_set_primary_ip_address_sa(struct sctp_tcb *stcb, struct sockaddr *sa)
2315 struct sctp_ifa *ifa;
2317 /* find the ifa for the desired set primary */
2318 vrf_id = stcb->asoc.vrf_id;
2319 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
2321 /* Invalid address */
2324 /* queue an ASCONF:SET_PRIM_ADDR to be sent */
2325 if (!sctp_asconf_queue_add(stcb, ifa, SCTP_SET_PRIM_ADDR)) {
2326 /* set primary queuing succeeded */
2327 SCTPDBG(SCTP_DEBUG_ASCONF1,
2328 "set_primary_ip_address_sa: queued on tcb=%p, ",
2330 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
2331 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) {
2332 #ifdef SCTP_TIMER_BASED_ASCONF
2333 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2334 stcb->sctp_ep, stcb,
2335 stcb->asoc.primary_destination);
2337 sctp_send_asconf(stcb, stcb->asoc.primary_destination,
2338 SCTP_ADDR_NOT_LOCKED);
2342 SCTPDBG(SCTP_DEBUG_ASCONF1, "set_primary_ip_address_sa: failed to add to queue on tcb=%p, ",
2344 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
2351 sctp_set_primary_ip_address(struct sctp_ifa *ifa)
2353 struct sctp_inpcb *inp;
2355 /* go through all our PCB's */
2356 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
2357 struct sctp_tcb *stcb;
2359 /* process for all associations for this endpoint */
2360 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
2361 /* queue an ASCONF:SET_PRIM_ADDR to be sent */
2362 if (!sctp_asconf_queue_add(stcb, ifa,
2363 SCTP_SET_PRIM_ADDR)) {
2364 /* set primary queuing succeeded */
2365 SCTPDBG(SCTP_DEBUG_ASCONF1, "set_primary_ip_address: queued on stcb=%p, ",
2367 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &ifa->address.sa);
2368 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) {
2369 #ifdef SCTP_TIMER_BASED_ASCONF
2370 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2371 stcb->sctp_ep, stcb,
2372 stcb->asoc.primary_destination);
2374 sctp_send_asconf(stcb, stcb->asoc.primary_destination,
2375 SCTP_ADDR_NOT_LOCKED);
2379 } /* for each stcb */
2380 } /* for each inp */
2384 sctp_is_addr_pending(struct sctp_tcb *stcb, struct sctp_ifa *sctp_ifa)
2386 struct sctp_tmit_chunk *chk, *nchk;
2387 unsigned int offset, asconf_limit;
2388 struct sctp_asconf_chunk *acp;
2389 struct sctp_asconf_paramhdr *aph;
2390 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
2391 struct sctp_ipv6addr_param *p_addr;
2392 int add_cnt, del_cnt;
2393 uint16_t last_param_type;
2395 add_cnt = del_cnt = 0;
2396 last_param_type = 0;
2397 for (chk = TAILQ_FIRST(&stcb->asoc.asconf_send_queue); chk != NULL;
2400 nchk = TAILQ_NEXT(chk, sctp_next);
2402 if (chk->data == NULL) {
2403 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: No mbuf data?\n");
2407 acp = mtod(chk->data, struct sctp_asconf_chunk *);
2408 offset += sizeof(struct sctp_asconf_chunk);
2409 asconf_limit = ntohs(acp->ch.chunk_length);
2410 p_addr = (struct sctp_ipv6addr_param *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_paramhdr), aparam_buf);
2411 if (p_addr == NULL) {
2412 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get lookup addr!\n");
2415 offset += ntohs(p_addr->ph.param_length);
2417 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf);
2419 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: Empty ASCONF will be sent?\n");
2422 while (aph != NULL) {
2423 unsigned int param_length, param_type;
2425 param_type = ntohs(aph->ph.param_type);
2426 param_length = ntohs(aph->ph.param_length);
2427 if (offset + param_length > asconf_limit) {
2428 /* parameter goes beyond end of chunk! */
2431 if (param_length > sizeof(aparam_buf)) {
2432 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length (%u) larger than buffer size!\n", param_length);
2435 if (param_length <= sizeof(struct sctp_paramhdr)) {
2436 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length(%u) too short\n", param_length);
2439 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, param_length, aparam_buf);
2441 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get entire param\n");
2444 p_addr = (struct sctp_ipv6addr_param *)(aph + 1);
2445 if (sctp_addr_match(p_addr, &sctp_ifa->address.sa) != 0) {
2446 switch (param_type) {
2447 case SCTP_ADD_IP_ADDRESS:
2450 case SCTP_DEL_IP_ADDRESS:
2456 last_param_type = param_type;
2458 offset += SCTP_SIZE32(param_length);
2459 if (offset >= asconf_limit) {
2460 /* no more data in the mbuf chain */
2463 /* get pointer to next asconf param */
2464 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf);
2469 * we want to find the sequences which consist of ADD -> DEL -> ADD
2472 if (add_cnt > del_cnt ||
2473 (add_cnt == del_cnt && last_param_type == SCTP_ADD_IP_ADDRESS)) {
2479 static struct sockaddr *
2480 sctp_find_valid_localaddr(struct sctp_tcb *stcb, int addr_locked)
2482 struct sctp_vrf *vrf = NULL;
2483 struct sctp_ifn *sctp_ifn;
2484 struct sctp_ifa *sctp_ifa;
2486 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2487 SCTP_IPI_ADDR_RLOCK();
2488 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
2490 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2491 SCTP_IPI_ADDR_RUNLOCK();
2494 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
2495 if (stcb->asoc.loopback_scope == 0 &&
2496 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
2497 /* Skip if loopback_scope not set */
2500 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
2501 if (sctp_ifa->address.sa.sa_family == AF_INET &&
2502 stcb->asoc.ipv4_addr_legal) {
2503 struct sockaddr_in *sin;
2505 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
2506 if (sin->sin_addr.s_addr == 0) {
2507 /* skip unspecifed addresses */
2510 if (stcb->asoc.ipv4_local_scope == 0 &&
2511 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))
2514 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
2515 (!sctp_is_addr_pending(stcb, sctp_ifa)))
2517 /* found a valid local v4 address to use */
2518 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2519 SCTP_IPI_ADDR_RUNLOCK();
2520 return (&sctp_ifa->address.sa);
2521 } else if (sctp_ifa->address.sa.sa_family == AF_INET6 &&
2522 stcb->asoc.ipv6_addr_legal) {
2523 struct sockaddr_in6 *sin6;
2525 if (sctp_ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
2528 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
2529 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2530 /* we skip unspecifed addresses */
2533 if (stcb->asoc.local_scope == 0 &&
2534 IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
2536 if (stcb->asoc.site_scope == 0 &&
2537 IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))
2540 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
2541 (!sctp_is_addr_pending(stcb, sctp_ifa)))
2543 /* found a valid local v6 address to use */
2544 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2545 SCTP_IPI_ADDR_RUNLOCK();
2546 return (&sctp_ifa->address.sa);
2550 /* no valid addresses found */
2551 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2552 SCTP_IPI_ADDR_RUNLOCK();
2556 static struct sockaddr *
2557 sctp_find_valid_localaddr_ep(struct sctp_tcb *stcb)
2559 struct sctp_laddr *laddr;
2561 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
2562 if (laddr->ifa == NULL) {
2565 /* is the address restricted ? */
2566 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
2567 (!sctp_is_addr_pending(stcb, laddr->ifa)))
2570 /* found a valid local address to use */
2571 return (&laddr->ifa->address.sa);
2573 /* no valid addresses found */
2578 * builds an ASCONF chunk from queued ASCONF params.
2579 * returns NULL on error (no mbuf, no ASCONF params queued, etc).
2582 sctp_compose_asconf(struct sctp_tcb *stcb, int *retlen, int addr_locked)
2584 struct mbuf *m_asconf, *m_asconf_chk;
2585 struct sctp_asconf_addr *aa;
2586 struct sctp_asconf_chunk *acp;
2587 struct sctp_asconf_paramhdr *aph;
2588 struct sctp_asconf_addr_param *aap;
2590 uint32_t correlation_id = 1; /* 0 is reserved... */
2591 caddr_t ptr, lookup_ptr;
2592 uint8_t lookup_used = 0;
2594 /* are there any asconf params to send? */
2595 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
2603 * get a chunk header mbuf and a cluster for the asconf params since
2604 * it's simpler to fill in the asconf chunk header lookup address on
2607 m_asconf_chk = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_chunk), 0, M_DONTWAIT, 1, MT_DATA);
2608 if (m_asconf_chk == NULL) {
2610 SCTPDBG(SCTP_DEBUG_ASCONF1,
2611 "compose_asconf: couldn't get chunk mbuf!\n");
2614 m_asconf = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
2615 if (m_asconf == NULL) {
2617 SCTPDBG(SCTP_DEBUG_ASCONF1,
2618 "compose_asconf: couldn't get mbuf!\n");
2619 sctp_m_freem(m_asconf_chk);
2622 SCTP_BUF_LEN(m_asconf_chk) = sizeof(struct sctp_asconf_chunk);
2623 SCTP_BUF_LEN(m_asconf) = 0;
2624 acp = mtod(m_asconf_chk, struct sctp_asconf_chunk *);
2625 bzero(acp, sizeof(struct sctp_asconf_chunk));
2626 /* save pointers to lookup address and asconf params */
2627 lookup_ptr = (caddr_t)(acp + 1); /* after the header */
2628 ptr = mtod(m_asconf, caddr_t); /* beginning of cluster */
2630 /* fill in chunk header info */
2631 acp->ch.chunk_type = SCTP_ASCONF;
2632 acp->ch.chunk_flags = 0;
2633 acp->serial_number = htonl(stcb->asoc.asconf_seq_out);
2634 stcb->asoc.asconf_seq_out++;
2636 /* add parameters... up to smallest MTU allowed */
2637 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
2640 /* get the parameter length */
2641 p_length = SCTP_SIZE32(aa->ap.aph.ph.param_length);
2642 /* will it fit in current chunk? */
2643 if (SCTP_BUF_LEN(m_asconf) + p_length > stcb->asoc.smallest_mtu) {
2644 /* won't fit, so we're done with this chunk */
2647 /* assign (and store) a correlation id */
2648 aa->ap.aph.correlation_id = correlation_id++;
2651 * fill in address if we're doing a delete this is a simple
2652 * way for us to fill in the correlation address, which
2653 * should only be used by the peer if we're deleting our
2654 * source address and adding a new address (e.g. renumbering
2657 if (lookup_used == 0 &&
2658 (aa->special_del == 0) &&
2659 aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) {
2660 struct sctp_ipv6addr_param *lookup;
2661 uint16_t p_size, addr_size;
2663 lookup = (struct sctp_ipv6addr_param *)lookup_ptr;
2664 lookup->ph.param_type =
2665 htons(aa->ap.addrp.ph.param_type);
2666 if (aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) {
2667 /* copy IPv6 address */
2668 p_size = sizeof(struct sctp_ipv6addr_param);
2669 addr_size = sizeof(struct in6_addr);
2671 /* copy IPv4 address */
2672 p_size = sizeof(struct sctp_ipv4addr_param);
2673 addr_size = sizeof(struct in_addr);
2675 lookup->ph.param_length = htons(SCTP_SIZE32(p_size));
2676 memcpy(lookup->addr, &aa->ap.addrp.addr, addr_size);
2677 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size);
2680 /* copy into current space */
2681 memcpy(ptr, &aa->ap, p_length);
2683 /* network elements and update lengths */
2684 aph = (struct sctp_asconf_paramhdr *)ptr;
2685 aap = (struct sctp_asconf_addr_param *)ptr;
2686 /* correlation_id is transparent to peer, no htonl needed */
2687 aph->ph.param_type = htons(aph->ph.param_type);
2688 aph->ph.param_length = htons(aph->ph.param_length);
2689 aap->addrp.ph.param_type = htons(aap->addrp.ph.param_type);
2690 aap->addrp.ph.param_length = htons(aap->addrp.ph.param_length);
2692 SCTP_BUF_LEN(m_asconf) += SCTP_SIZE32(p_length);
2693 ptr += SCTP_SIZE32(p_length);
2696 * these params are removed off the pending list upon
2697 * getting an ASCONF-ACK back from the peer, just set flag
2701 /* check to see if the lookup addr has been populated yet */
2702 if (lookup_used == 0) {
2703 /* NOTE: if the address param is optional, can skip this... */
2704 /* add any valid (existing) address... */
2705 struct sctp_ipv6addr_param *lookup;
2706 uint16_t p_size, addr_size;
2707 struct sockaddr *found_addr;
2710 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)
2711 found_addr = sctp_find_valid_localaddr(stcb,
2714 found_addr = sctp_find_valid_localaddr_ep(stcb);
2716 lookup = (struct sctp_ipv6addr_param *)lookup_ptr;
2717 if (found_addr != NULL) {
2718 if (found_addr->sa_family == AF_INET6) {
2719 /* copy IPv6 address */
2720 lookup->ph.param_type =
2721 htons(SCTP_IPV6_ADDRESS);
2722 p_size = sizeof(struct sctp_ipv6addr_param);
2723 addr_size = sizeof(struct in6_addr);
2724 addr_ptr = (caddr_t)&((struct sockaddr_in6 *)
2725 found_addr)->sin6_addr;
2727 /* copy IPv4 address */
2728 lookup->ph.param_type =
2729 htons(SCTP_IPV4_ADDRESS);
2730 p_size = sizeof(struct sctp_ipv4addr_param);
2731 addr_size = sizeof(struct in_addr);
2732 addr_ptr = (caddr_t)&((struct sockaddr_in *)
2733 found_addr)->sin_addr;
2735 lookup->ph.param_length = htons(SCTP_SIZE32(p_size));
2736 memcpy(lookup->addr, addr_ptr, addr_size);
2737 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size);
2740 /* uh oh... don't have any address?? */
2741 SCTPDBG(SCTP_DEBUG_ASCONF1,
2742 "compose_asconf: no lookup addr!\n");
2743 /* for now, we send a IPv4 address of 0.0.0.0 */
2744 lookup->ph.param_type = htons(SCTP_IPV4_ADDRESS);
2745 lookup->ph.param_length = htons(SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param)));
2746 bzero(lookup->addr, sizeof(struct in_addr));
2747 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param));
2751 /* chain it all together */
2752 SCTP_BUF_NEXT(m_asconf_chk) = m_asconf;
2753 *retlen = SCTP_BUF_LEN(m_asconf_chk) + SCTP_BUF_LEN(m_asconf);
2754 acp->ch.chunk_length = ntohs(*retlen);
2756 return (m_asconf_chk);
2760 * section to handle address changes before an association is up eg. changes
2761 * during INIT/INIT-ACK/COOKIE-ECHO handshake
2765 * processes the (local) addresses in the INIT-ACK chunk
2768 sctp_process_initack_addresses(struct sctp_tcb *stcb, struct mbuf *m,
2769 unsigned int offset, unsigned int length)
2771 struct sctp_paramhdr tmp_param, *ph;
2772 uint16_t plen, ptype;
2773 struct sctp_ifa *sctp_ifa;
2774 struct sctp_ipv6addr_param addr_store;
2775 struct sockaddr_in6 sin6;
2776 struct sockaddr_in sin;
2777 struct sockaddr *sa;
2780 SCTPDBG(SCTP_DEBUG_ASCONF2, "processing init-ack addresses\n");
2781 if (stcb == NULL) /* Un-needed check for SA */
2784 /* convert to upper bound */
2787 if ((offset + sizeof(struct sctp_paramhdr)) > length) {
2790 /* init the addresses */
2791 bzero(&sin6, sizeof(sin6));
2792 sin6.sin6_family = AF_INET6;
2793 sin6.sin6_len = sizeof(sin6);
2794 sin6.sin6_port = stcb->rport;
2796 bzero(&sin, sizeof(sin));
2797 sin.sin_len = sizeof(sin);
2798 sin.sin_family = AF_INET;
2799 sin.sin_port = stcb->rport;
2801 /* go through the addresses in the init-ack */
2802 ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset,
2803 sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param);
2804 while (ph != NULL) {
2805 ptype = ntohs(ph->param_type);
2806 plen = ntohs(ph->param_length);
2807 if (ptype == SCTP_IPV6_ADDRESS) {
2808 struct sctp_ipv6addr_param *a6p;
2810 /* get the entire IPv6 address param */
2811 a6p = (struct sctp_ipv6addr_param *)
2812 sctp_m_getptr(m, offset,
2813 sizeof(struct sctp_ipv6addr_param),
2814 (uint8_t *) & addr_store);
2815 if (plen != sizeof(struct sctp_ipv6addr_param) ||
2819 memcpy(&sin6.sin6_addr, a6p->addr,
2820 sizeof(struct in6_addr));
2821 sa = (struct sockaddr *)&sin6;
2822 } else if (ptype == SCTP_IPV4_ADDRESS) {
2823 struct sctp_ipv4addr_param *a4p;
2825 /* get the entire IPv4 address param */
2826 a4p = (struct sctp_ipv4addr_param *)sctp_m_getptr(m, offset,
2827 sizeof(struct sctp_ipv4addr_param),
2828 (uint8_t *) & addr_store);
2829 if (plen != sizeof(struct sctp_ipv4addr_param) ||
2833 sin.sin_addr.s_addr = a4p->addr;
2834 sa = (struct sockaddr *)&sin;
2839 /* see if this address really (still) exists */
2841 vrf_id = stcb->asoc.vrf_id;
2843 vrf_id = SCTP_DEFAULT_VRFID;
2845 sctp_ifa = sctp_find_ifa_by_addr(sa, vrf_id,
2846 SCTP_ADDR_NOT_LOCKED);
2847 if (sctp_ifa == NULL) {
2848 /* address doesn't exist anymore */
2851 /* are ASCONFs allowed ? */
2852 if ((sctp_is_feature_on(stcb->sctp_ep,
2853 SCTP_PCB_FLAGS_DO_ASCONF)) &&
2854 stcb->asoc.peer_supports_asconf) {
2855 /* queue an ASCONF DEL_IP_ADDRESS */
2856 status = sctp_asconf_queue_sa_delete(stcb, sa);
2858 * if queued ok, and in correct state, send
2862 SCTP_GET_STATE(&stcb->asoc) ==
2864 #ifdef SCTP_TIMER_BASED_ASCONF
2865 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2866 stcb->sctp_ep, stcb,
2867 stcb->asoc.primary_destination);
2869 sctp_send_asconf(stcb, stcb->asoc.primary_destination,
2870 SCTP_ADDR_NOT_LOCKED);
2877 * Sanity check: Make sure the length isn't 0, otherwise
2878 * we'll be stuck in this loop for a long time...
2880 if (SCTP_SIZE32(plen) == 0) {
2881 SCTP_PRINTF("process_initack_addrs: bad len (%d) type=%xh\n",
2885 /* get next parameter */
2886 offset += SCTP_SIZE32(plen);
2887 if ((offset + sizeof(struct sctp_paramhdr)) > length)
2889 ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset,
2890 sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param);
2894 /* FIX ME: need to verify return result for v6 address type if v6 disabled */
2896 * checks to see if a specific address is in the initack address list returns
2897 * 1 if found, 0 if not
2900 sctp_addr_in_initack(struct sctp_tcb *stcb, struct mbuf *m, uint32_t offset,
2901 uint32_t length, struct sockaddr *sa)
2903 struct sctp_paramhdr tmp_param, *ph;
2904 uint16_t plen, ptype;
2905 struct sctp_ipv6addr_param addr_store;
2906 struct sockaddr_in *sin;
2907 struct sctp_ipv4addr_param *a4p;
2910 struct sockaddr_in6 *sin6;
2911 struct sctp_ipv6addr_param *a6p;
2912 struct sockaddr_in6 sin6_tmp;
2918 (sa->sa_family != AF_INET6) &&
2920 (sa->sa_family != AF_INET))
2923 SCTPDBG(SCTP_DEBUG_ASCONF2, "find_initack_addr: starting search for ");
2924 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, sa);
2925 /* convert to upper bound */
2928 if ((offset + sizeof(struct sctp_paramhdr)) > length) {
2929 SCTPDBG(SCTP_DEBUG_ASCONF1,
2930 "find_initack_addr: invalid offset?\n");
2933 /* go through the addresses in the init-ack */
2934 ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset,
2935 sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param);
2936 while (ph != NULL) {
2937 ptype = ntohs(ph->param_type);
2938 plen = ntohs(ph->param_length);
2940 if (ptype == SCTP_IPV6_ADDRESS && sa->sa_family == AF_INET6) {
2941 /* get the entire IPv6 address param */
2942 a6p = (struct sctp_ipv6addr_param *)
2943 sctp_m_getptr(m, offset,
2944 sizeof(struct sctp_ipv6addr_param),
2945 (uint8_t *) & addr_store);
2946 if (plen != sizeof(struct sctp_ipv6addr_param) ||
2951 sin6 = (struct sockaddr_in6 *)sa;
2952 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2953 /* create a copy and clear scope */
2954 memcpy(&sin6_tmp, sin6,
2955 sizeof(struct sockaddr_in6));
2957 in6_clearscope(&sin6->sin6_addr);
2959 if (memcmp(&sin6->sin6_addr, a6p->addr,
2960 sizeof(struct in6_addr)) == 0) {
2967 if (ptype == SCTP_IPV4_ADDRESS &&
2968 sa->sa_family == AF_INET) {
2969 /* get the entire IPv4 address param */
2970 a4p = (struct sctp_ipv4addr_param *)sctp_m_getptr(m,
2971 offset, sizeof(struct sctp_ipv4addr_param),
2972 (uint8_t *) & addr_store);
2973 if (plen != sizeof(struct sctp_ipv4addr_param) ||
2978 sin = (struct sockaddr_in *)sa;
2979 if (sin->sin_addr.s_addr == a4p->addr) {
2984 /* get next parameter */
2985 offset += SCTP_SIZE32(plen);
2986 if (offset + sizeof(struct sctp_paramhdr) > length)
2988 ph = (struct sctp_paramhdr *)
2989 sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr),
2990 (uint8_t *) & tmp_param);
2997 * makes sure that the current endpoint local addr list is consistent with
2998 * the new association (eg. subset bound, asconf allowed) adds addresses as
3002 sctp_check_address_list_ep(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3003 int length, struct sockaddr *init_addr)
3005 struct sctp_laddr *laddr;
3007 /* go through the endpoint list */
3008 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
3009 /* be paranoid and validate the laddr */
3010 if (laddr->ifa == NULL) {
3011 SCTPDBG(SCTP_DEBUG_ASCONF1,
3012 "check_addr_list_ep: laddr->ifa is NULL");
3015 if (laddr->ifa == NULL) {
3016 SCTPDBG(SCTP_DEBUG_ASCONF1, "check_addr_list_ep: laddr->ifa->ifa_addr is NULL");
3019 /* do i have it implicitly? */
3020 if (sctp_cmpaddr(&laddr->ifa->address.sa, init_addr)) {
3023 /* check to see if in the init-ack */
3024 if (!sctp_addr_in_initack(stcb, m, offset, length,
3025 &laddr->ifa->address.sa)) {
3027 sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb, laddr->ifa,
3028 SCTP_ADD_IP_ADDRESS, SCTP_ADDR_NOT_LOCKED);
3034 * makes sure that the current kernel address list is consistent with the new
3035 * association (with all addrs bound) adds addresses as necessary
3038 sctp_check_address_list_all(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3039 int length, struct sockaddr *init_addr,
3040 uint16_t local_scope, uint16_t site_scope,
3041 uint16_t ipv4_scope, uint16_t loopback_scope)
3043 struct sctp_vrf *vrf = NULL;
3044 struct sctp_ifn *sctp_ifn;
3045 struct sctp_ifa *sctp_ifa;
3049 vrf_id = stcb->asoc.vrf_id;
3053 SCTP_IPI_ADDR_RLOCK();
3054 vrf = sctp_find_vrf(vrf_id);
3056 SCTP_IPI_ADDR_RUNLOCK();
3059 /* go through all our known interfaces */
3060 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
3061 if (loopback_scope == 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
3062 /* skip loopback interface */
3065 /* go through each interface address */
3066 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
3067 /* do i have it implicitly? */
3068 if (sctp_cmpaddr(&sctp_ifa->address.sa, init_addr)) {
3071 /* check to see if in the init-ack */
3072 if (!sctp_addr_in_initack(stcb, m, offset, length,
3073 &sctp_ifa->address.sa)) {
3075 sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb,
3076 sctp_ifa, SCTP_ADD_IP_ADDRESS,
3079 } /* end foreach ifa */
3080 } /* end foreach ifn */
3081 SCTP_IPI_ADDR_RUNLOCK();
3085 * validates an init-ack chunk (from a cookie-echo) with current addresses
3086 * adds addresses from the init-ack into our local address list, if needed
3087 * queues asconf adds/deletes addresses as needed and makes appropriate list
3088 * changes for source address selection m, offset: points to the start of the
3089 * address list in an init-ack chunk length: total length of the address
3090 * params only init_addr: address where my INIT-ACK was sent from
3093 sctp_check_address_list(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3094 int length, struct sockaddr *init_addr,
3095 uint16_t local_scope, uint16_t site_scope,
3096 uint16_t ipv4_scope, uint16_t loopback_scope)
3098 /* process the local addresses in the initack */
3099 sctp_process_initack_addresses(stcb, m, offset, length);
3101 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3102 /* bound all case */
3103 sctp_check_address_list_all(stcb, m, offset, length, init_addr,
3104 local_scope, site_scope, ipv4_scope, loopback_scope);
3106 /* subset bound case */
3107 if (sctp_is_feature_on(stcb->sctp_ep,
3108 SCTP_PCB_FLAGS_DO_ASCONF)) {
3109 /* asconf's allowed */
3110 sctp_check_address_list_ep(stcb, m, offset, length,
3113 /* else, no asconfs allowed, so what we sent is what we get */
3118 * sctp_bindx() support
3121 sctp_addr_mgmt_ep_sa(struct sctp_inpcb *inp, struct sockaddr *sa,
3122 uint32_t type, uint32_t vrf_id, struct sctp_ifa *sctp_ifap)
3124 struct sctp_ifa *ifa;
3126 if (sa->sa_len == 0) {
3127 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL);
3132 } else if (type == SCTP_ADD_IP_ADDRESS) {
3133 /* For an add the address MUST be on the system */
3134 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
3135 } else if (type == SCTP_DEL_IP_ADDRESS) {
3136 /* For a delete we need to find it in the inp */
3137 ifa = sctp_find_ifa_in_ep(inp, sa, SCTP_ADDR_NOT_LOCKED);
3142 if (type == SCTP_ADD_IP_ADDRESS) {
3143 sctp_add_local_addr_ep(inp, ifa, type);
3144 } else if (type == SCTP_DEL_IP_ADDRESS) {
3145 struct sctp_laddr *laddr;
3147 if (inp->laddr_count < 2) {
3148 /* can't delete the last local address */
3149 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL);
3152 LIST_FOREACH(laddr, &inp->sctp_addr_list,
3154 if (ifa == laddr->ifa) {
3155 /* Mark in the delete */
3156 laddr->action = type;
3160 if (!LIST_EMPTY(&inp->sctp_asoc_list)) {
3162 * There is no need to start the iterator if the inp
3163 * has no associations.
3165 struct sctp_asconf_iterator *asc;
3166 struct sctp_laddr *wi;
3168 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
3169 sizeof(struct sctp_asconf_iterator),
3172 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM);
3175 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
3177 SCTP_FREE(asc, SCTP_M_ASC_IT);
3178 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM);
3181 LIST_INIT(&asc->list_of_work);
3183 SCTP_INCR_LADDR_COUNT();
3186 atomic_add_int(&ifa->refcount, 1);
3187 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
3188 (void)sctp_initiate_iterator(sctp_asconf_iterator_ep,
3189 sctp_asconf_iterator_stcb,
3190 sctp_asconf_iterator_ep_end,
3192 SCTP_PCB_ANY_FEATURES,
3193 SCTP_ASOC_ANY_STATE,
3195 sctp_asconf_iterator_end, inp, 0);
3199 /* invalid address! */
3200 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EADDRNOTAVAIL);
3201 return (EADDRNOTAVAIL);
3206 sctp_asconf_send_nat_state_update(struct sctp_tcb *stcb,
3207 struct sctp_nets *net)
3209 struct sctp_asconf_addr *aa;
3210 struct sctp_ifa *sctp_ifap;
3211 struct sctp_asconf_tag_param *vtag;
3212 struct sockaddr_in *to;
3215 struct sockaddr_in6 *to6;
3219 SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing net\n");
3223 SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing stcb\n");
3227 * Need to have in the asconf: - vtagparam(my_vtag/peer_vtag) -
3228 * add(0.0.0.0) - del(0.0.0.0) - Any global addresses add(addr)
3230 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3233 /* didn't get memory */
3234 SCTPDBG(SCTP_DEBUG_ASCONF1,
3235 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3238 aa->special_del = 0;
3239 /* fill in asconf address parameter fields */
3240 /* top level elements are "networked" during send */
3242 aa->sent = 0; /* clear sent flag */
3243 vtag = (struct sctp_asconf_tag_param *)&aa->ap.aph;
3244 vtag->aph.ph.param_type = SCTP_NAT_VTAGS;
3245 vtag->aph.ph.param_length = sizeof(struct sctp_asconf_tag_param);
3246 vtag->local_vtag = htonl(stcb->asoc.my_vtag);
3247 vtag->remote_vtag = htonl(stcb->asoc.peer_vtag);
3248 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3250 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3253 /* didn't get memory */
3254 SCTPDBG(SCTP_DEBUG_ASCONF1,
3255 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3258 memset(aa, 0, sizeof(struct sctp_asconf_addr));
3259 /* fill in asconf address parameter fields */
3261 if (net->ro._l_addr.sa.sa_family == AF_INET) {
3262 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3263 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param);
3264 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
3265 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_param);
3266 /* No need to add an address, we are using 0.0.0.0 */
3267 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3270 else if (net->ro._l_addr.sa.sa_family == AF_INET6) {
3271 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3272 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param);
3273 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
3274 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param);
3275 /* No need to add an address, we are using 0.0.0.0 */
3276 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3279 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3282 /* didn't get memory */
3283 SCTPDBG(SCTP_DEBUG_ASCONF1,
3284 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3287 memset(aa, 0, sizeof(struct sctp_asconf_addr));
3288 /* fill in asconf address parameter fields */
3290 if (net->ro._l_addr.sa.sa_family == AF_INET) {
3291 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3292 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param);
3293 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
3294 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_param);
3295 /* No need to add an address, we are using 0.0.0.0 */
3296 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3299 else if (net->ro._l_addr.sa.sa_family == AF_INET6) {
3300 aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS;
3301 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param);
3302 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
3303 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param);
3304 /* No need to add an address, we are using 0.0.0.0 */
3305 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3308 /* Now we must hunt the addresses and add all global addresses */
3309 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3310 struct sctp_vrf *vrf = NULL;
3311 struct sctp_ifn *sctp_ifnp;
3314 vrf_id = stcb->sctp_ep->def_vrf_id;
3315 vrf = sctp_find_vrf(vrf_id);
3319 SCTP_IPI_ADDR_RLOCK();
3320 LIST_FOREACH(sctp_ifnp, &vrf->ifnlist, next_ifn) {
3321 LIST_FOREACH(sctp_ifap, &sctp_ifnp->ifalist, next_ifa) {
3322 if (sctp_ifap->address.sa.sa_family == AF_INET) {
3323 to = &sctp_ifap->address.sin;
3325 if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) {
3328 if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) {
3333 else if (sctp_ifap->address.sa.sa_family == AF_INET6) {
3334 to6 = &sctp_ifap->address.sin6;
3335 if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) {
3338 if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) {
3343 sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS);
3346 SCTP_IPI_ADDR_RUNLOCK();
3348 struct sctp_laddr *laddr;
3350 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
3351 if (laddr->ifa == NULL) {
3354 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED)
3356 * Address being deleted by the system, dont
3360 if (laddr->action == SCTP_DEL_IP_ADDRESS) {
3362 * Address being deleted on this ep don't
3367 sctp_ifap = laddr->ifa;
3368 if (sctp_ifap->address.sa.sa_family == AF_INET) {
3369 to = &sctp_ifap->address.sin;
3371 if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) {
3374 if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) {
3379 else if (sctp_ifap->address.sa.sa_family == AF_INET6) {
3380 to6 = &sctp_ifap->address.sin6;
3381 if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) {
3384 if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) {
3389 sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS);
3393 /* Now we must send the asconf into the queue */
3394 sctp_send_asconf(stcb, net, 0);