2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <netinet/sctp_os.h>
39 #include <netinet/sctp_var.h>
40 #include <netinet/sctp_sysctl.h>
41 #include <netinet/sctp_pcb.h>
42 #include <netinet/sctp_header.h>
43 #include <netinet/sctputil.h>
44 #include <netinet/sctp_output.h>
45 #include <netinet/sctp_asconf.h>
46 #include <netinet/sctp_timer.h>
50 * SCTP_DEBUG_ASCONF1: protocol info, general info and errors
51 * SCTP_DEBUG_ASCONF2: detailed info
58 * An ASCONF parameter queue exists per asoc which holds the pending address
59 * operations. Lists are updated upon receipt of ASCONF-ACK.
61 * A restricted_addrs list exists per assoc to hold local addresses that are
62 * not (yet) usable by the assoc as a source address. These addresses are
63 * either pending an ASCONF operation (and exist on the ASCONF parameter
64 * queue), or they are permanently restricted (the peer has returned an
65 * ERROR indication to an ASCONF(ADD), or the peer does not support ASCONF).
67 * Deleted addresses are always immediately removed from the lists as they will
68 * (shortly) no longer exist in the kernel. We send ASCONFs as a courtesy,
73 * ASCONF parameter processing.
74 * response_required: set if a reply is required (eg. SUCCESS_REPORT).
75 * returns a mbuf to an "error" response parameter or NULL/"success" if ok.
76 * FIX: allocating this many mbufs on the fly is pretty inefficient...
79 sctp_asconf_success_response(uint32_t id)
81 struct mbuf *m_reply = NULL;
82 struct sctp_asconf_paramhdr *aph;
84 m_reply = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_paramhdr),
85 0, M_NOWAIT, 1, MT_DATA);
86 if (m_reply == NULL) {
87 SCTPDBG(SCTP_DEBUG_ASCONF1,
88 "asconf_success_response: couldn't get mbuf!\n");
91 aph = mtod(m_reply, struct sctp_asconf_paramhdr *);
92 aph->correlation_id = id;
93 aph->ph.param_type = htons(SCTP_SUCCESS_REPORT);
94 aph->ph.param_length = sizeof(struct sctp_asconf_paramhdr);
95 SCTP_BUF_LEN(m_reply) = aph->ph.param_length;
96 aph->ph.param_length = htons(aph->ph.param_length);
102 sctp_asconf_error_response(uint32_t id, uint16_t cause, uint8_t *error_tlv,
105 struct mbuf *m_reply = NULL;
106 struct sctp_asconf_paramhdr *aph;
107 struct sctp_error_cause *error;
110 m_reply = sctp_get_mbuf_for_msg((sizeof(struct sctp_asconf_paramhdr) +
112 sizeof(struct sctp_error_cause)),
113 0, M_NOWAIT, 1, MT_DATA);
114 if (m_reply == NULL) {
115 SCTPDBG(SCTP_DEBUG_ASCONF1,
116 "asconf_error_response: couldn't get mbuf!\n");
119 aph = mtod(m_reply, struct sctp_asconf_paramhdr *);
120 error = (struct sctp_error_cause *)(aph + 1);
122 aph->correlation_id = id;
123 aph->ph.param_type = htons(SCTP_ERROR_CAUSE_IND);
124 error->code = htons(cause);
125 error->length = tlv_length + sizeof(struct sctp_error_cause);
126 aph->ph.param_length = error->length +
127 sizeof(struct sctp_asconf_paramhdr);
129 if (aph->ph.param_length > MLEN) {
130 SCTPDBG(SCTP_DEBUG_ASCONF1,
131 "asconf_error_response: tlv_length (%xh) too big\n",
133 sctp_m_freem(m_reply); /* discard */
136 if (error_tlv != NULL) {
137 tlv = (uint8_t *)(error + 1);
138 memcpy(tlv, error_tlv, tlv_length);
140 SCTP_BUF_LEN(m_reply) = aph->ph.param_length;
141 error->length = htons(error->length);
142 aph->ph.param_length = htons(aph->ph.param_length);
148 sctp_process_asconf_add_ip(struct sockaddr *src, struct sctp_asconf_paramhdr *aph,
149 struct sctp_tcb *stcb, int send_hb, int response_required)
151 struct sctp_nets *net;
152 struct mbuf *m_reply = NULL;
153 union sctp_sockstore store;
154 struct sctp_paramhdr *ph;
155 uint16_t param_type, aparam_length;
156 #if defined(INET) || defined(INET6)
157 uint16_t param_length;
160 int zero_address = 0;
163 struct sockaddr_in *sin;
164 struct sctp_ipv4addr_param *v4addr;
167 struct sockaddr_in6 *sin6;
168 struct sctp_ipv6addr_param *v6addr;
171 aparam_length = ntohs(aph->ph.param_length);
172 ph = (struct sctp_paramhdr *)(aph + 1);
173 param_type = ntohs(ph->param_type);
174 #if defined(INET) || defined(INET6)
175 param_length = ntohs(ph->param_length);
178 switch (param_type) {
180 case SCTP_IPV4_ADDRESS:
181 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
182 /* invalid param size */
185 v4addr = (struct sctp_ipv4addr_param *)ph;
187 memset(sin, 0, sizeof(*sin));
188 sin->sin_family = AF_INET;
189 sin->sin_len = sizeof(struct sockaddr_in);
190 sin->sin_port = stcb->rport;
191 sin->sin_addr.s_addr = v4addr->addr;
192 if ((sin->sin_addr.s_addr == INADDR_BROADCAST) ||
193 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
196 if (sin->sin_addr.s_addr == INADDR_ANY)
198 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding ");
199 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
203 case SCTP_IPV6_ADDRESS:
204 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
205 /* invalid param size */
208 v6addr = (struct sctp_ipv6addr_param *)ph;
210 memset(sin6, 0, sizeof(*sin6));
211 sin6->sin6_family = AF_INET6;
212 sin6->sin6_len = sizeof(struct sockaddr_in6);
213 sin6->sin6_port = stcb->rport;
214 memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr,
215 sizeof(struct in6_addr));
216 if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
219 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
221 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding ");
222 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
226 m_reply = sctp_asconf_error_response(aph->correlation_id,
227 SCTP_CAUSE_INVALID_PARAM, (uint8_t *)aph,
232 /* if 0.0.0.0/::0, add the source address instead */
233 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
235 SCTPDBG(SCTP_DEBUG_ASCONF1,
236 "process_asconf_add_ip: using source addr ");
237 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src);
239 /* add the address */
241 m_reply = sctp_asconf_error_response(aph->correlation_id,
242 SCTP_CAUSE_INVALID_PARAM, (uint8_t *)aph,
244 } else if (sctp_add_remote_addr(stcb, sa, &net, stcb->asoc.port,
246 SCTP_ADDR_DYNAMIC_ADDED) != 0) {
247 SCTPDBG(SCTP_DEBUG_ASCONF1,
248 "process_asconf_add_ip: error adding address\n");
249 m_reply = sctp_asconf_error_response(aph->correlation_id,
250 SCTP_CAUSE_RESOURCE_SHORTAGE, (uint8_t *)aph,
253 /* notify upper layer */
254 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_ADD_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
255 if (response_required) {
257 sctp_asconf_success_response(aph->correlation_id);
259 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb, net);
260 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep,
263 sctp_send_hb(stcb, net, SCTP_SO_NOT_LOCKED);
270 sctp_asconf_del_remote_addrs_except(struct sctp_tcb *stcb, struct sockaddr *src)
272 struct sctp_nets *src_net, *net;
274 /* make sure the source address exists as a destination net */
275 src_net = sctp_findnet(stcb, src);
276 if (src_net == NULL) {
281 /* delete all destination addresses except the source */
282 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
283 if (net != src_net) {
284 /* delete this address */
285 sctp_remove_net(stcb, net);
286 SCTPDBG(SCTP_DEBUG_ASCONF1,
287 "asconf_del_remote_addrs_except: deleting ");
288 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1,
289 (struct sockaddr *)&net->ro._l_addr);
290 /* notify upper layer */
291 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0,
292 (struct sockaddr *)&net->ro._l_addr, SCTP_SO_NOT_LOCKED);
299 sctp_process_asconf_delete_ip(struct sockaddr *src,
300 struct sctp_asconf_paramhdr *aph,
301 struct sctp_tcb *stcb, int response_required)
303 struct mbuf *m_reply = NULL;
304 union sctp_sockstore store;
305 struct sctp_paramhdr *ph;
306 uint16_t param_type, aparam_length;
307 #if defined(INET) || defined(INET6)
308 uint16_t param_length;
311 int zero_address = 0;
314 struct sockaddr_in *sin;
315 struct sctp_ipv4addr_param *v4addr;
318 struct sockaddr_in6 *sin6;
319 struct sctp_ipv6addr_param *v6addr;
322 aparam_length = ntohs(aph->ph.param_length);
323 ph = (struct sctp_paramhdr *)(aph + 1);
324 param_type = ntohs(ph->param_type);
325 #if defined(INET) || defined(INET6)
326 param_length = ntohs(ph->param_length);
329 switch (param_type) {
331 case SCTP_IPV4_ADDRESS:
332 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
333 /* invalid param size */
336 v4addr = (struct sctp_ipv4addr_param *)ph;
338 memset(sin, 0, sizeof(*sin));
339 sin->sin_family = AF_INET;
340 sin->sin_len = sizeof(struct sockaddr_in);
341 sin->sin_port = stcb->rport;
342 sin->sin_addr.s_addr = v4addr->addr;
343 if (sin->sin_addr.s_addr == INADDR_ANY)
345 SCTPDBG(SCTP_DEBUG_ASCONF1,
346 "process_asconf_delete_ip: deleting ");
347 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
351 case SCTP_IPV6_ADDRESS:
352 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
353 /* invalid param size */
356 v6addr = (struct sctp_ipv6addr_param *)ph;
358 memset(sin6, 0, sizeof(*sin6));
359 sin6->sin6_family = AF_INET6;
360 sin6->sin6_len = sizeof(struct sockaddr_in6);
361 sin6->sin6_port = stcb->rport;
362 memcpy(&sin6->sin6_addr, v6addr->addr,
363 sizeof(struct in6_addr));
364 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
366 SCTPDBG(SCTP_DEBUG_ASCONF1,
367 "process_asconf_delete_ip: deleting ");
368 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
372 m_reply = sctp_asconf_error_response(aph->correlation_id,
373 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *)aph,
378 /* make sure the source address is not being deleted */
379 if (sctp_cmpaddr(sa, src)) {
380 /* trying to delete the source address! */
381 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete source addr\n");
382 m_reply = sctp_asconf_error_response(aph->correlation_id,
383 SCTP_CAUSE_DELETING_SRC_ADDR, (uint8_t *)aph,
388 /* if deleting 0.0.0.0/::0, delete all addresses except src addr */
389 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
390 result = sctp_asconf_del_remote_addrs_except(stcb, src);
393 /* src address did not exist? */
394 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: src addr does not exist?\n");
395 /* what error to reply with?? */
397 sctp_asconf_error_response(aph->correlation_id,
398 SCTP_CAUSE_REQUEST_REFUSED, (uint8_t *)aph,
400 } else if (response_required) {
402 sctp_asconf_success_response(aph->correlation_id);
407 /* delete the address */
408 result = sctp_del_remote_addr(stcb, sa);
410 * note if result == -2, the address doesn't exist in the asoc but
411 * since it's being deleted anyways, we just ack the delete -- but
412 * this probably means something has already gone awry
415 /* only one address in the asoc */
416 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete last IP addr!\n");
417 m_reply = sctp_asconf_error_response(aph->correlation_id,
418 SCTP_CAUSE_DELETING_LAST_ADDR, (uint8_t *)aph,
421 if (response_required) {
422 m_reply = sctp_asconf_success_response(aph->correlation_id);
424 /* notify upper layer */
425 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
431 sctp_process_asconf_set_primary(struct sockaddr *src,
432 struct sctp_asconf_paramhdr *aph,
433 struct sctp_tcb *stcb, int response_required)
435 struct mbuf *m_reply = NULL;
436 union sctp_sockstore store;
437 struct sctp_paramhdr *ph;
438 uint16_t param_type, aparam_length;
439 #if defined(INET) || defined(INET6)
440 uint16_t param_length;
443 int zero_address = 0;
445 struct sockaddr_in *sin;
446 struct sctp_ipv4addr_param *v4addr;
449 struct sockaddr_in6 *sin6;
450 struct sctp_ipv6addr_param *v6addr;
453 aparam_length = ntohs(aph->ph.param_length);
454 ph = (struct sctp_paramhdr *)(aph + 1);
455 param_type = ntohs(ph->param_type);
456 #if defined(INET) || defined(INET6)
457 param_length = ntohs(ph->param_length);
460 switch (param_type) {
462 case SCTP_IPV4_ADDRESS:
463 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
464 /* invalid param size */
467 v4addr = (struct sctp_ipv4addr_param *)ph;
469 memset(sin, 0, sizeof(*sin));
470 sin->sin_family = AF_INET;
471 sin->sin_len = sizeof(struct sockaddr_in);
472 sin->sin_addr.s_addr = v4addr->addr;
473 if (sin->sin_addr.s_addr == INADDR_ANY)
475 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: ");
476 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
480 case SCTP_IPV6_ADDRESS:
481 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
482 /* invalid param size */
485 v6addr = (struct sctp_ipv6addr_param *)ph;
487 memset(sin6, 0, sizeof(*sin6));
488 sin6->sin6_family = AF_INET6;
489 sin6->sin6_len = sizeof(struct sockaddr_in6);
490 memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr,
491 sizeof(struct in6_addr));
492 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
494 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: ");
495 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
499 m_reply = sctp_asconf_error_response(aph->correlation_id,
500 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *)aph,
505 /* if 0.0.0.0/::0, use the source address instead */
506 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
508 SCTPDBG(SCTP_DEBUG_ASCONF1,
509 "process_asconf_set_primary: using source addr ");
510 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src);
512 /* set the primary address */
513 if (sctp_set_primary_addr(stcb, sa, NULL) == 0) {
514 SCTPDBG(SCTP_DEBUG_ASCONF1,
515 "process_asconf_set_primary: primary address set\n");
516 /* notify upper layer */
517 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_SET_PRIMARY, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
518 if ((stcb->asoc.primary_destination->dest_state & SCTP_ADDR_REACHABLE) &&
519 (!(stcb->asoc.primary_destination->dest_state & SCTP_ADDR_PF)) &&
520 (stcb->asoc.alternate)) {
521 sctp_free_remote_addr(stcb->asoc.alternate);
522 stcb->asoc.alternate = NULL;
524 if (response_required) {
525 m_reply = sctp_asconf_success_response(aph->correlation_id);
528 * Mobility adaptation. Ideally, when the reception of SET
529 * PRIMARY with DELETE IP ADDRESS of the previous primary
530 * destination, unacknowledged DATA are retransmitted
531 * immediately to the new primary destination for seamless
532 * handover. If the destination is UNCONFIRMED and marked to
533 * REQ_PRIM, The retransmission occur when reception of the
534 * HEARTBEAT-ACK. (See sctp_handle_heartbeat_ack in
535 * sctp_input.c) Also, when change of the primary
536 * destination, it is better that all subsequent new DATA
537 * containing already queued DATA are transmitted to the new
538 * primary destination. (by micchie)
540 if ((sctp_is_mobility_feature_on(stcb->sctp_ep,
541 SCTP_MOBILITY_BASE) ||
542 sctp_is_mobility_feature_on(stcb->sctp_ep,
543 SCTP_MOBILITY_FASTHANDOFF)) &&
544 sctp_is_mobility_feature_on(stcb->sctp_ep,
545 SCTP_MOBILITY_PRIM_DELETED) &&
546 (stcb->asoc.primary_destination->dest_state &
547 SCTP_ADDR_UNCONFIRMED) == 0) {
549 sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED,
550 stcb->sctp_ep, stcb, NULL,
551 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_1);
552 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
553 SCTP_MOBILITY_FASTHANDOFF)) {
554 sctp_assoc_immediate_retrans(stcb,
555 stcb->asoc.primary_destination);
557 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
558 SCTP_MOBILITY_BASE)) {
559 sctp_move_chunks_from_net(stcb,
560 stcb->asoc.deleted_primary);
562 sctp_delete_prim_timer(stcb->sctp_ep, stcb,
563 stcb->asoc.deleted_primary);
566 /* couldn't set the requested primary address! */
567 SCTPDBG(SCTP_DEBUG_ASCONF1,
568 "process_asconf_set_primary: set primary failed!\n");
569 /* must have been an invalid address, so report */
570 m_reply = sctp_asconf_error_response(aph->correlation_id,
571 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *)aph,
579 * handles an ASCONF chunk.
580 * if all parameters are processed ok, send a plain (empty) ASCONF-ACK
583 sctp_handle_asconf(struct mbuf *m, unsigned int offset,
584 struct sockaddr *src,
585 struct sctp_asconf_chunk *cp, struct sctp_tcb *stcb,
588 struct sctp_association *asoc;
590 struct mbuf *n, *m_ack, *m_result, *m_tail;
591 struct sctp_asconf_ack_chunk *ack_cp;
592 struct sctp_asconf_paramhdr *aph;
593 struct sctp_ipv6addr_param *p_addr;
594 unsigned int asconf_limit, cnt;
595 int error = 0; /* did an error occur? */
597 /* asconf param buffer */
598 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
599 struct sctp_asconf_ack *ack, *ack_next;
601 /* verify minimum length */
602 if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_chunk)) {
603 SCTPDBG(SCTP_DEBUG_ASCONF1,
604 "handle_asconf: chunk too small = %xh\n",
605 ntohs(cp->ch.chunk_length));
609 serial_num = ntohl(cp->serial_number);
611 if (SCTP_TSN_GE(asoc->asconf_seq_in, serial_num)) {
612 /* got a duplicate ASCONF */
613 SCTPDBG(SCTP_DEBUG_ASCONF1,
614 "handle_asconf: got duplicate serial number = %xh\n",
617 } else if (serial_num != (asoc->asconf_seq_in + 1)) {
618 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: incorrect serial number = %xh (expected next = %xh)\n",
619 serial_num, asoc->asconf_seq_in + 1);
623 /* it's the expected "next" sequence number, so process it */
624 asoc->asconf_seq_in = serial_num; /* update sequence */
625 /* get length of all the param's in the ASCONF */
626 asconf_limit = offset + ntohs(cp->ch.chunk_length);
627 SCTPDBG(SCTP_DEBUG_ASCONF1,
628 "handle_asconf: asconf_limit=%u, sequence=%xh\n",
629 asconf_limit, serial_num);
632 /* delete old cache */
633 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: Now processing first ASCONF. Try to delete old cache\n");
635 TAILQ_FOREACH_SAFE(ack, &asoc->asconf_ack_sent, next, ack_next) {
636 if (ack->serial_number == serial_num)
638 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: delete old(%u) < first(%u)\n",
639 ack->serial_number, serial_num);
640 TAILQ_REMOVE(&asoc->asconf_ack_sent, ack, next);
641 if (ack->data != NULL) {
642 sctp_m_freem(ack->data);
644 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), ack);
648 m_ack = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_ack_chunk), 0,
649 M_NOWAIT, 1, MT_DATA);
651 SCTPDBG(SCTP_DEBUG_ASCONF1,
652 "handle_asconf: couldn't get mbuf!\n");
655 m_tail = m_ack; /* current reply chain's tail */
657 /* fill in ASCONF-ACK header */
658 ack_cp = mtod(m_ack, struct sctp_asconf_ack_chunk *);
659 ack_cp->ch.chunk_type = SCTP_ASCONF_ACK;
660 ack_cp->ch.chunk_flags = 0;
661 ack_cp->serial_number = htonl(serial_num);
662 /* set initial lengths (eg. just an ASCONF-ACK), ntohx at the end! */
663 SCTP_BUF_LEN(m_ack) = sizeof(struct sctp_asconf_ack_chunk);
664 ack_cp->ch.chunk_length = sizeof(struct sctp_asconf_ack_chunk);
666 /* skip the lookup address parameter */
667 offset += sizeof(struct sctp_asconf_chunk);
668 p_addr = (struct sctp_ipv6addr_param *)sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr), (uint8_t *)&aparam_buf);
669 if (p_addr == NULL) {
670 SCTPDBG(SCTP_DEBUG_ASCONF1,
671 "handle_asconf: couldn't get lookup addr!\n");
672 /* respond with a missing/invalid mandatory parameter error */
676 /* param_length is already validated in process_control... */
677 offset += ntohs(p_addr->ph.param_length); /* skip lookup addr */
678 /* get pointer to first asconf param in ASCONF */
679 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, sizeof(struct sctp_asconf_paramhdr), (uint8_t *)&aparam_buf);
681 SCTPDBG(SCTP_DEBUG_ASCONF1, "Empty ASCONF received?\n");
684 /* process through all parameters */
686 while (aph != NULL) {
687 unsigned int param_length, param_type;
689 param_type = ntohs(aph->ph.param_type);
690 param_length = ntohs(aph->ph.param_length);
691 if (offset + param_length > asconf_limit) {
692 /* parameter goes beyond end of chunk! */
698 if (param_length > sizeof(aparam_buf)) {
699 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) larger than buffer size!\n", param_length);
703 if (param_length <= sizeof(struct sctp_paramhdr)) {
704 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) too short\n", param_length);
707 /* get the entire parameter */
708 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf);
710 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: couldn't get entire param\n");
714 switch (param_type) {
715 case SCTP_ADD_IP_ADDRESS:
716 m_result = sctp_process_asconf_add_ip(src, aph, stcb,
717 (cnt < SCTP_BASE_SYSCTL(sctp_hb_maxburst)), error);
720 case SCTP_DEL_IP_ADDRESS:
721 m_result = sctp_process_asconf_delete_ip(src, aph, stcb,
724 case SCTP_ERROR_CAUSE_IND:
725 /* not valid in an ASCONF chunk */
727 case SCTP_SET_PRIM_ADDR:
728 m_result = sctp_process_asconf_set_primary(src, aph,
732 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: sees a NAT VTAG state parameter\n");
734 case SCTP_SUCCESS_REPORT:
735 /* not valid in an ASCONF chunk */
737 case SCTP_ULP_ADAPTATION:
741 if ((param_type & 0x8000) == 0) {
742 /* Been told to STOP at this param */
743 asconf_limit = offset;
745 * FIX FIX - We need to call
746 * sctp_arethere_unrecognized_parameters()
747 * to get a operr and send it for any
748 * param's with the 0x4000 bit set OR do it
749 * here ourselves... note we still must STOP
750 * if the 0x8000 bit is clear.
753 /* unknown/invalid param type */
757 /* add any (error) result to the reply mbuf chain */
758 if (m_result != NULL) {
759 SCTP_BUF_NEXT(m_tail) = m_result;
761 /* update lengths, make sure it's aligned too */
762 SCTP_BUF_LEN(m_result) = SCTP_SIZE32(SCTP_BUF_LEN(m_result));
763 ack_cp->ch.chunk_length += SCTP_BUF_LEN(m_result);
764 /* set flag to force success reports */
767 offset += SCTP_SIZE32(param_length);
768 /* update remaining ASCONF message length to process */
769 if (offset >= asconf_limit) {
770 /* no more data in the mbuf chain */
773 /* get pointer to next asconf param */
774 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset,
775 sizeof(struct sctp_asconf_paramhdr),
776 (uint8_t *)&aparam_buf);
778 /* can't get an asconf paramhdr */
779 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: can't get asconf param hdr!\n");
780 /* FIX ME - add error here... */
785 ack_cp->ch.chunk_length = htons(ack_cp->ch.chunk_length);
786 /* save the ASCONF-ACK reply */
787 ack = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asconf_ack),
788 struct sctp_asconf_ack);
793 ack->serial_number = serial_num;
794 ack->last_sent_to = NULL;
797 for (n = m_ack; n != NULL; n = SCTP_BUF_NEXT(n)) {
798 ack->len += SCTP_BUF_LEN(n);
800 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_ack_sent, ack, next);
802 /* see if last_control_chunk_from is set properly (use IP src addr) */
803 if (stcb->asoc.last_control_chunk_from == NULL) {
805 * this could happen if the source address was just newly
808 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: looking up net for IP source address\n");
809 SCTPDBG(SCTP_DEBUG_ASCONF1, "Looking for IP source: ");
810 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src);
811 /* look up the from address */
812 stcb->asoc.last_control_chunk_from = sctp_findnet(stcb, src);
814 if (stcb->asoc.last_control_chunk_from == NULL) {
815 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: IP source address not found?!\n");
822 * does the address match? returns 0 if not, 1 if so
825 sctp_asconf_addr_match(struct sctp_asconf_addr *aa, struct sockaddr *sa)
827 switch (sa->sa_family) {
832 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
834 if ((aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) &&
835 (memcmp(&aa->ap.addrp.addr, &sin6->sin6_addr,
836 sizeof(struct in6_addr)) == 0)) {
845 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
847 if ((aa->ap.addrp.ph.param_type == SCTP_IPV4_ADDRESS) &&
848 (memcmp(&aa->ap.addrp.addr, &sin->sin_addr,
849 sizeof(struct in_addr)) == 0)) {
862 * does the address match? returns 0 if not, 1 if so
865 sctp_addr_match(struct sctp_paramhdr *ph, struct sockaddr *sa)
867 #if defined(INET) || defined(INET6)
868 uint16_t param_type, param_length;
870 param_type = ntohs(ph->param_type);
871 param_length = ntohs(ph->param_length);
873 switch (sa->sa_family) {
878 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
879 struct sctp_ipv6addr_param *v6addr;
881 v6addr = (struct sctp_ipv6addr_param *)ph;
882 if ((param_type == SCTP_IPV6_ADDRESS) &&
883 (param_length == sizeof(struct sctp_ipv6addr_param)) &&
884 (memcmp(&v6addr->addr, &sin6->sin6_addr,
885 sizeof(struct in6_addr)) == 0)) {
894 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
895 struct sctp_ipv4addr_param *v4addr;
897 v4addr = (struct sctp_ipv4addr_param *)ph;
898 if ((param_type == SCTP_IPV4_ADDRESS) &&
899 (param_length == sizeof(struct sctp_ipv4addr_param)) &&
900 (memcmp(&v4addr->addr, &sin->sin_addr,
901 sizeof(struct in_addr)) == 0)) {
914 * Cleanup for non-responded/OP ERR'd ASCONF
917 sctp_asconf_cleanup(struct sctp_tcb *stcb, struct sctp_nets *net)
920 * clear out any existing asconfs going out
922 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net,
923 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_2);
924 stcb->asoc.asconf_seq_out_acked = stcb->asoc.asconf_seq_out;
925 /* remove the old ASCONF on our outbound queue */
926 sctp_toss_old_asconf(stcb);
930 * cleanup any cached source addresses that may be topologically
931 * incorrect after a new address has been added to this interface.
934 sctp_asconf_nets_cleanup(struct sctp_tcb *stcb, struct sctp_ifn *ifn)
936 struct sctp_nets *net;
939 * Ideally, we want to only clear cached routes and source addresses
940 * that are topologically incorrect. But since there is no easy way
941 * to know whether the newly added address on the ifn would cause a
942 * routing change (i.e. a new egress interface would be chosen)
943 * without doing a new routing lookup and source address selection,
944 * we will (for now) just flush any cached route using a different
945 * ifn (and cached source addrs) and let output re-choose them
946 * during the next send on that net.
948 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
950 * clear any cached route (and cached source address) if the
951 * route's interface is NOT the same as the address change.
952 * If it's the same interface, just clear the cached source
955 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro) &&
957 (SCTP_GET_IF_INDEX_FROM_ROUTE(&net->ro) != ifn->ifn_index))) {
958 /* clear any cached route */
959 RTFREE(net->ro.ro_rt);
960 net->ro.ro_rt = NULL;
962 /* clear any cached source address */
963 if (net->src_addr_selected) {
964 sctp_free_ifa(net->ro._s_addr);
965 net->ro._s_addr = NULL;
966 net->src_addr_selected = 0;
973 sctp_assoc_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *dstnet)
977 if (dstnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
980 if (stcb->asoc.deleted_primary == NULL) {
984 if (!TAILQ_EMPTY(&stcb->asoc.sent_queue)) {
985 SCTPDBG(SCTP_DEBUG_ASCONF1, "assoc_immediate_retrans: Deleted primary is ");
986 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.deleted_primary->ro._l_addr.sa);
987 SCTPDBG(SCTP_DEBUG_ASCONF1, "Current Primary is ");
988 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.primary_destination->ro._l_addr.sa);
989 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb,
990 stcb->asoc.deleted_primary,
991 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_3);
992 stcb->asoc.num_send_timers_up--;
993 if (stcb->asoc.num_send_timers_up < 0) {
994 stcb->asoc.num_send_timers_up = 0;
996 SCTP_TCB_LOCK_ASSERT(stcb);
997 error = sctp_t3rxt_timer(stcb->sctp_ep, stcb,
998 stcb->asoc.deleted_primary);
1000 SCTP_INP_DECR_REF(stcb->sctp_ep);
1003 SCTP_TCB_LOCK_ASSERT(stcb);
1004 #ifdef SCTP_AUDITING_ENABLED
1005 sctp_auditing(4, stcb->sctp_ep, stcb, stcb->asoc.deleted_primary);
1007 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1008 if ((stcb->asoc.num_send_timers_up == 0) &&
1009 (stcb->asoc.sent_queue_cnt > 0)) {
1010 struct sctp_tmit_chunk *chk;
1012 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1013 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep,
1021 sctp_asconf_queue_mgmt(struct sctp_tcb *, struct sctp_ifa *, uint16_t);
1024 sctp_net_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *net)
1026 struct sctp_tmit_chunk *chk;
1028 SCTPDBG(SCTP_DEBUG_ASCONF1, "net_immediate_retrans: RTO is %d\n", net->RTO);
1029 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net,
1030 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_4);
1031 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
1032 net->error_count = 0;
1033 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
1034 if (chk->whoTo == net) {
1035 if (chk->sent < SCTP_DATAGRAM_RESEND) {
1036 chk->sent = SCTP_DATAGRAM_RESEND;
1037 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
1038 sctp_flight_size_decrease(chk);
1039 sctp_total_flight_decrease(stcb, chk);
1040 net->marked_retrans++;
1041 stcb->asoc.marked_retrans++;
1045 if (net->marked_retrans) {
1046 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1051 sctp_path_check_and_react(struct sctp_tcb *stcb, struct sctp_ifa *newifa)
1053 struct sctp_nets *net;
1054 int addrnum, changed;
1057 * If number of local valid addresses is 1, the valid address is
1058 * probably newly added address. Several valid addresses in this
1059 * association. A source address may not be changed. Additionally,
1060 * they can be configured on a same interface as "alias" addresses.
1063 addrnum = sctp_local_addr_count(stcb);
1064 SCTPDBG(SCTP_DEBUG_ASCONF1, "p_check_react(): %d local addresses\n",
1067 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1068 /* clear any cached route and source address */
1069 if (net->ro.ro_rt) {
1070 RTFREE(net->ro.ro_rt);
1071 net->ro.ro_rt = NULL;
1073 if (net->src_addr_selected) {
1074 sctp_free_ifa(net->ro._s_addr);
1075 net->ro._s_addr = NULL;
1076 net->src_addr_selected = 0;
1078 /* Retransmit unacknowledged DATA chunks immediately */
1079 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1080 SCTP_MOBILITY_FASTHANDOFF)) {
1081 sctp_net_immediate_retrans(stcb, net);
1083 /* also, SET PRIMARY is maybe already sent */
1088 /* Multiple local addresses exsist in the association. */
1089 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1090 /* clear any cached route and source address */
1091 if (net->ro.ro_rt) {
1092 RTFREE(net->ro.ro_rt);
1093 net->ro.ro_rt = NULL;
1095 if (net->src_addr_selected) {
1096 sctp_free_ifa(net->ro._s_addr);
1097 net->ro._s_addr = NULL;
1098 net->src_addr_selected = 0;
1101 * Check if the nexthop is corresponding to the new address.
1102 * If the new address is corresponding to the current
1103 * nexthop, the path will be changed. If the new address is
1104 * NOT corresponding to the current nexthop, the path will
1107 SCTP_RTALLOC((sctp_route_t *)&net->ro,
1108 stcb->sctp_ep->def_vrf_id,
1109 stcb->sctp_ep->fibnum);
1110 if (net->ro.ro_rt == NULL)
1114 switch (net->ro._l_addr.sa.sa_family) {
1117 if (sctp_v4src_match_nexthop(newifa, (sctp_route_t *)&net->ro)) {
1124 if (sctp_v6src_match_nexthop(
1125 &newifa->address.sin6, (sctp_route_t *)&net->ro)) {
1134 * if the newly added address does not relate routing
1135 * information, we skip.
1139 /* Retransmit unacknowledged DATA chunks immediately */
1140 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1141 SCTP_MOBILITY_FASTHANDOFF)) {
1142 sctp_net_immediate_retrans(stcb, net);
1144 /* Send SET PRIMARY for this new address */
1145 if (net == stcb->asoc.primary_destination) {
1146 (void)sctp_asconf_queue_mgmt(stcb, newifa,
1147 SCTP_SET_PRIM_ADDR);
1153 * process an ADD/DELETE IP ack from peer.
1154 * addr: corresponding sctp_ifa to the address being added/deleted.
1155 * type: SCTP_ADD_IP_ADDRESS or SCTP_DEL_IP_ADDRESS.
1156 * flag: 1=success, 0=failure.
1159 sctp_asconf_addr_mgmt_ack(struct sctp_tcb *stcb, struct sctp_ifa *addr, uint32_t flag)
1162 * do the necessary asoc list work- if we get a failure indication,
1163 * leave the address on the assoc's restricted list. If we get a
1164 * success indication, remove the address from the restricted list.
1167 * Note: this will only occur for ADD_IP_ADDRESS, since
1168 * DEL_IP_ADDRESS is never actually added to the list...
1171 /* success case, so remove from the restricted list */
1172 sctp_del_local_addr_restricted(stcb, addr);
1174 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1175 SCTP_MOBILITY_BASE) ||
1176 sctp_is_mobility_feature_on(stcb->sctp_ep,
1177 SCTP_MOBILITY_FASTHANDOFF)) {
1178 sctp_path_check_and_react(stcb, addr);
1181 /* clear any cached/topologically incorrect source addresses */
1182 sctp_asconf_nets_cleanup(stcb, addr->ifn_p);
1184 /* else, leave it on the list */
1188 * add an asconf add/delete/set primary IP address parameter to the queue.
1189 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1190 * returns 0 if queued, -1 if not queued/removed.
1191 * NOTE: if adding, but a delete for the same address is already scheduled
1192 * (and not yet sent out), simply remove it from queue. Same for deleting
1193 * an address already scheduled for add. If a duplicate operation is found,
1194 * ignore the new one.
1197 sctp_asconf_queue_mgmt(struct sctp_tcb *stcb, struct sctp_ifa *ifa,
1200 struct sctp_asconf_addr *aa, *aa_next;
1202 /* make sure the request isn't already in the queue */
1203 TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) {
1204 /* address match? */
1205 if (sctp_asconf_addr_match(aa, &ifa->address.sa) == 0)
1208 * is the request already in queue but not sent? pass the
1209 * request already sent in order to resolve the following
1210 * case: 1. arrival of ADD, then sent 2. arrival of DEL. we
1211 * can't remove the ADD request already sent 3. arrival of
1214 if (aa->ap.aph.ph.param_type == type && aa->sent == 0) {
1217 /* is the negative request already in queue, and not sent */
1218 if ((aa->sent == 0) && (type == SCTP_ADD_IP_ADDRESS) &&
1219 (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS)) {
1220 /* add requested, delete already queued */
1221 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1222 /* remove the ifa from the restricted list */
1223 sctp_del_local_addr_restricted(stcb, ifa);
1224 /* free the asconf param */
1225 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1226 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: add removes queued entry\n");
1229 if ((aa->sent == 0) && (type == SCTP_DEL_IP_ADDRESS) &&
1230 (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS)) {
1231 /* delete requested, add already queued */
1232 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1233 /* remove the aa->ifa from the restricted list */
1234 sctp_del_local_addr_restricted(stcb, aa->ifa);
1235 /* free the asconf param */
1236 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1237 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: delete removes queued entry\n");
1242 /* adding new request to the queue */
1243 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
1246 /* didn't get memory */
1247 SCTPDBG(SCTP_DEBUG_ASCONF1, "asconf_queue_mgmt: failed to get memory!\n");
1250 aa->special_del = 0;
1251 /* fill in asconf address parameter fields */
1252 /* top level elements are "networked" during send */
1253 aa->ap.aph.ph.param_type = type;
1255 atomic_add_int(&ifa->refcount, 1);
1256 /* correlation_id filled in during send routine later... */
1257 switch (ifa->address.sa.sa_family) {
1261 struct sockaddr_in6 *sin6;
1263 sin6 = &ifa->address.sin6;
1264 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
1265 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param));
1266 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) +
1267 sizeof(struct sctp_ipv6addr_param);
1268 memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr,
1269 sizeof(struct in6_addr));
1276 struct sockaddr_in *sin;
1278 sin = &ifa->address.sin;
1279 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
1280 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param));
1281 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) +
1282 sizeof(struct sctp_ipv4addr_param);
1283 memcpy(&aa->ap.addrp.addr, &sin->sin_addr,
1284 sizeof(struct in_addr));
1289 /* invalid family! */
1290 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1294 aa->sent = 0; /* clear sent flag */
1296 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
1298 if (SCTP_BASE_SYSCTL(sctp_debug_on) & SCTP_DEBUG_ASCONF2) {
1299 if (type == SCTP_ADD_IP_ADDRESS) {
1300 SCTP_PRINTF("asconf_queue_mgmt: inserted asconf ADD_IP_ADDRESS: ");
1301 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa);
1302 } else if (type == SCTP_DEL_IP_ADDRESS) {
1303 SCTP_PRINTF("asconf_queue_mgmt: appended asconf DEL_IP_ADDRESS: ");
1304 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa);
1306 SCTP_PRINTF("asconf_queue_mgmt: appended asconf SET_PRIM_ADDR: ");
1307 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa);
1317 * add an asconf operation for the given ifa and type.
1318 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1319 * returns 0 if completed, -1 if not completed, 1 if immediate send is
1323 sctp_asconf_queue_add(struct sctp_tcb *stcb, struct sctp_ifa *ifa,
1327 int pending_delete_queued = 0;
1330 /* see if peer supports ASCONF */
1331 if (stcb->asoc.asconf_supported == 0) {
1336 * if this is deleting the last address from the assoc, mark it as
1339 if ((type == SCTP_DEL_IP_ADDRESS) && !stcb->asoc.asconf_del_pending) {
1340 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1341 last = (sctp_local_addr_count(stcb) == 0);
1343 last = (sctp_local_addr_count(stcb) == 1);
1346 /* set the pending delete info only */
1347 stcb->asoc.asconf_del_pending = 1;
1348 stcb->asoc.asconf_addr_del_pending = ifa;
1349 atomic_add_int(&ifa->refcount, 1);
1350 SCTPDBG(SCTP_DEBUG_ASCONF2,
1351 "asconf_queue_add: mark delete last address pending\n");
1356 /* queue an asconf parameter */
1357 status = sctp_asconf_queue_mgmt(stcb, ifa, type);
1360 * if this is an add, and there is a delete also pending (i.e. the
1361 * last local address is being changed), queue the pending delete
1364 if ((type == SCTP_ADD_IP_ADDRESS) && stcb->asoc.asconf_del_pending && (status == 0)) {
1365 /* queue in the pending delete */
1366 if (sctp_asconf_queue_mgmt(stcb,
1367 stcb->asoc.asconf_addr_del_pending,
1368 SCTP_DEL_IP_ADDRESS) == 0) {
1369 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_add: queing pending delete\n");
1370 pending_delete_queued = 1;
1371 /* clear out the pending delete info */
1372 stcb->asoc.asconf_del_pending = 0;
1373 sctp_free_ifa(stcb->asoc.asconf_addr_del_pending);
1374 stcb->asoc.asconf_addr_del_pending = NULL;
1378 if (pending_delete_queued) {
1379 struct sctp_nets *net;
1382 * since we know that the only/last address is now being
1383 * changed in this case, reset the cwnd/rto on all nets to
1384 * start as a new address and path. Also clear the error
1385 * counts to give the assoc the best chance to complete the
1388 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1389 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb,
1392 net->error_count = 0;
1394 stcb->asoc.overall_error_count = 0;
1395 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) {
1396 sctp_misc_ints(SCTP_THRESHOLD_CLEAR,
1397 stcb->asoc.overall_error_count,
1399 SCTP_FROM_SCTP_ASCONF,
1403 /* queue in an advisory set primary too */
1404 (void)sctp_asconf_queue_mgmt(stcb, ifa, SCTP_SET_PRIM_ADDR);
1405 /* let caller know we should send this out immediately */
1412 * add an asconf delete IP address parameter to the queue by sockaddr and
1413 * possibly with no sctp_ifa available. This is only called by the routine
1414 * that checks the addresses in an INIT-ACK against the current address list.
1415 * returns 0 if completed, non-zero if not completed.
1416 * NOTE: if an add is already scheduled (and not yet sent out), simply
1417 * remove it from queue. If a duplicate operation is found, ignore the
1421 sctp_asconf_queue_sa_delete(struct sctp_tcb *stcb, struct sockaddr *sa)
1423 struct sctp_ifa *ifa;
1424 struct sctp_asconf_addr *aa, *aa_next;
1429 /* see if peer supports ASCONF */
1430 if (stcb->asoc.asconf_supported == 0) {
1433 /* make sure the request isn't already in the queue */
1434 TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) {
1435 /* address match? */
1436 if (sctp_asconf_addr_match(aa, sa) == 0)
1438 /* is the request already in queue (sent or not) */
1439 if (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) {
1442 /* is the negative request already in queue, and not sent */
1445 if (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS) {
1446 /* add already queued, so remove existing entry */
1447 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1448 sctp_del_local_addr_restricted(stcb, aa->ifa);
1449 /* free the entry */
1450 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1455 /* find any existing ifa-- NOTE ifa CAN be allowed to be NULL */
1456 ifa = sctp_find_ifa_by_addr(sa, stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
1458 /* adding new request to the queue */
1459 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
1462 /* didn't get memory */
1463 SCTPDBG(SCTP_DEBUG_ASCONF1,
1464 "sctp_asconf_queue_sa_delete: failed to get memory!\n");
1467 aa->special_del = 0;
1468 /* fill in asconf address parameter fields */
1469 /* top level elements are "networked" during send */
1470 aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS;
1473 atomic_add_int(&ifa->refcount, 1);
1474 /* correlation_id filled in during send routine later... */
1475 switch (sa->sa_family) {
1480 struct sockaddr_in6 *sin6;
1482 sin6 = (struct sockaddr_in6 *)sa;
1483 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
1484 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param));
1485 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv6addr_param);
1486 memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr,
1487 sizeof(struct in6_addr));
1495 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
1497 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
1498 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param));
1499 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv4addr_param);
1500 memcpy(&aa->ap.addrp.addr, &sin->sin_addr,
1501 sizeof(struct in_addr));
1506 /* invalid family! */
1507 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1512 aa->sent = 0; /* clear sent flag */
1514 /* delete goes to the back of the queue */
1515 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
1517 /* sa_ignore MEMLEAK {memory is put on the tailq} */
1522 * find a specific asconf param on our "sent" queue
1524 static struct sctp_asconf_addr *
1525 sctp_asconf_find_param(struct sctp_tcb *stcb, uint32_t correlation_id)
1527 struct sctp_asconf_addr *aa;
1529 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
1530 if (aa->ap.aph.correlation_id == correlation_id &&
1536 /* didn't find it */
1541 * process an SCTP_ERROR_CAUSE_IND for a ASCONF-ACK parameter and do
1542 * notifications based on the error response
1545 sctp_asconf_process_error(struct sctp_tcb *stcb SCTP_UNUSED,
1546 struct sctp_asconf_paramhdr *aph)
1548 struct sctp_error_cause *eh;
1549 struct sctp_paramhdr *ph;
1550 uint16_t param_type;
1551 uint16_t error_code;
1553 eh = (struct sctp_error_cause *)(aph + 1);
1554 ph = (struct sctp_paramhdr *)(eh + 1);
1555 /* validate lengths */
1556 if (htons(eh->length) + sizeof(struct sctp_error_cause) >
1557 htons(aph->ph.param_length)) {
1558 /* invalid error cause length */
1559 SCTPDBG(SCTP_DEBUG_ASCONF1,
1560 "asconf_process_error: cause element too long\n");
1563 if (htons(ph->param_length) + sizeof(struct sctp_paramhdr) >
1564 htons(eh->length)) {
1565 /* invalid included TLV length */
1566 SCTPDBG(SCTP_DEBUG_ASCONF1,
1567 "asconf_process_error: included TLV too long\n");
1570 /* which error code ? */
1571 error_code = ntohs(eh->code);
1572 param_type = ntohs(aph->ph.param_type);
1573 /* FIX: this should go back up the REMOTE_ERROR ULP notify */
1574 switch (error_code) {
1575 case SCTP_CAUSE_RESOURCE_SHORTAGE:
1576 /* we allow ourselves to "try again" for this error */
1579 /* peer can't handle it... */
1580 switch (param_type) {
1581 case SCTP_ADD_IP_ADDRESS:
1582 case SCTP_DEL_IP_ADDRESS:
1583 case SCTP_SET_PRIM_ADDR:
1592 * process an asconf queue param.
1593 * aparam: parameter to process, will be removed from the queue.
1594 * flag: 1=success case, 0=failure case
1597 sctp_asconf_process_param_ack(struct sctp_tcb *stcb,
1598 struct sctp_asconf_addr *aparam, uint32_t flag)
1600 uint16_t param_type;
1602 /* process this param */
1603 param_type = aparam->ap.aph.ph.param_type;
1604 switch (param_type) {
1605 case SCTP_ADD_IP_ADDRESS:
1606 SCTPDBG(SCTP_DEBUG_ASCONF1,
1607 "process_param_ack: added IP address\n");
1608 sctp_asconf_addr_mgmt_ack(stcb, aparam->ifa, flag);
1610 case SCTP_DEL_IP_ADDRESS:
1611 SCTPDBG(SCTP_DEBUG_ASCONF1,
1612 "process_param_ack: deleted IP address\n");
1613 /* nothing really to do... lists already updated */
1615 case SCTP_SET_PRIM_ADDR:
1616 SCTPDBG(SCTP_DEBUG_ASCONF1,
1617 "process_param_ack: set primary IP address\n");
1618 /* nothing to do... peer may start using this addr */
1621 /* should NEVER happen */
1625 /* remove the param and free it */
1626 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aparam, next);
1628 sctp_free_ifa(aparam->ifa);
1629 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
1633 * cleanup from a bad asconf ack parameter
1636 sctp_asconf_ack_clear(struct sctp_tcb *stcb SCTP_UNUSED)
1638 /* assume peer doesn't really know how to do asconfs */
1639 /* XXX we could free the pending queue here */
1644 sctp_handle_asconf_ack(struct mbuf *m, int offset,
1645 struct sctp_asconf_ack_chunk *cp, struct sctp_tcb *stcb,
1646 struct sctp_nets *net, int *abort_no_unlock)
1648 struct sctp_association *asoc;
1649 uint32_t serial_num;
1650 uint16_t ack_length;
1651 struct sctp_asconf_paramhdr *aph;
1652 struct sctp_asconf_addr *aa, *aa_next;
1653 uint32_t last_error_id = 0; /* last error correlation id */
1655 struct sctp_asconf_addr *ap;
1657 /* asconf param buffer */
1658 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
1660 /* verify minimum length */
1661 if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_ack_chunk)) {
1662 SCTPDBG(SCTP_DEBUG_ASCONF1,
1663 "handle_asconf_ack: chunk too small = %xh\n",
1664 ntohs(cp->ch.chunk_length));
1668 serial_num = ntohl(cp->serial_number);
1671 * NOTE: we may want to handle this differently- currently, we will
1672 * abort when we get an ack for the expected serial number + 1 (eg.
1673 * we didn't send it), process an ack normally if it is the expected
1674 * serial number, and re-send the previous ack for *ALL* other
1679 * if the serial number is the next expected, but I didn't send it,
1680 * abort the asoc, since someone probably just hijacked us...
1682 if (serial_num == (asoc->asconf_seq_out + 1)) {
1683 struct mbuf *op_err;
1684 char msg[SCTP_DIAG_INFO_LEN];
1686 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got unexpected next serial number! Aborting asoc!\n");
1687 snprintf(msg, sizeof(msg), "Never sent serial number %8.8x",
1689 op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
1690 sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED);
1691 *abort_no_unlock = 1;
1694 if (serial_num != asoc->asconf_seq_out_acked + 1) {
1695 /* got a duplicate/unexpected ASCONF-ACK */
1696 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got duplicate/unexpected serial number = %xh (expected = %xh)\n",
1697 serial_num, asoc->asconf_seq_out_acked + 1);
1701 if (serial_num == asoc->asconf_seq_out - 1) {
1702 /* stop our timer */
1703 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net,
1704 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_5);
1707 /* process the ASCONF-ACK contents */
1708 ack_length = ntohs(cp->ch.chunk_length) -
1709 sizeof(struct sctp_asconf_ack_chunk);
1710 offset += sizeof(struct sctp_asconf_ack_chunk);
1711 /* process through all parameters */
1712 while (ack_length >= sizeof(struct sctp_asconf_paramhdr)) {
1713 unsigned int param_length, param_type;
1715 /* get pointer to next asconf parameter */
1716 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset,
1717 sizeof(struct sctp_asconf_paramhdr), aparam_buf);
1719 /* can't get an asconf paramhdr */
1720 sctp_asconf_ack_clear(stcb);
1723 param_type = ntohs(aph->ph.param_type);
1724 param_length = ntohs(aph->ph.param_length);
1725 if (param_length > ack_length) {
1726 sctp_asconf_ack_clear(stcb);
1729 if (param_length < sizeof(struct sctp_paramhdr)) {
1730 sctp_asconf_ack_clear(stcb);
1733 /* get the complete parameter... */
1734 if (param_length > sizeof(aparam_buf)) {
1735 SCTPDBG(SCTP_DEBUG_ASCONF1,
1736 "param length (%u) larger than buffer size!\n", param_length);
1737 sctp_asconf_ack_clear(stcb);
1740 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf);
1742 sctp_asconf_ack_clear(stcb);
1745 /* correlation_id is transparent to peer, no ntohl needed */
1746 id = aph->correlation_id;
1748 switch (param_type) {
1749 case SCTP_ERROR_CAUSE_IND:
1751 /* find the corresponding asconf param in our queue */
1752 ap = sctp_asconf_find_param(stcb, id);
1754 /* hmm... can't find this in our queue! */
1757 /* process the parameter, failed flag */
1758 sctp_asconf_process_param_ack(stcb, ap, 0);
1759 /* process the error response */
1760 sctp_asconf_process_error(stcb, aph);
1762 case SCTP_SUCCESS_REPORT:
1763 /* find the corresponding asconf param in our queue */
1764 ap = sctp_asconf_find_param(stcb, id);
1766 /* hmm... can't find this in our queue! */
1769 /* process the parameter, success flag */
1770 sctp_asconf_process_param_ack(stcb, ap, 1);
1776 /* update remaining ASCONF-ACK message length to process */
1777 ack_length -= SCTP_SIZE32(param_length);
1778 if (ack_length <= 0) {
1779 /* no more data in the mbuf chain */
1782 offset += SCTP_SIZE32(param_length);
1786 * if there are any "sent" params still on the queue, these are
1787 * implicitly "success", or "failed" (if we got an error back) ...
1788 * so process these appropriately
1790 * we assume that the correlation_id's are monotonically increasing
1791 * beginning from 1 and that we don't have *that* many outstanding
1794 if (last_error_id == 0)
1795 last_error_id--; /* set to "max" value */
1796 TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) {
1797 if (aa->sent == 1) {
1799 * implicitly successful or failed if correlation_id
1800 * < last_error_id, then success else, failure
1802 if (aa->ap.aph.correlation_id < last_error_id)
1803 sctp_asconf_process_param_ack(stcb, aa, 1);
1805 sctp_asconf_process_param_ack(stcb, aa, 0);
1808 * since we always process in order (FIFO queue) if
1809 * we reach one that hasn't been sent, the rest
1810 * should not have been sent either. so, we're
1817 /* update the next sequence number to use */
1818 asoc->asconf_seq_out_acked++;
1819 /* remove the old ASCONF on our outbound queue */
1820 sctp_toss_old_asconf(stcb);
1821 if (!TAILQ_EMPTY(&stcb->asoc.asconf_queue)) {
1822 #ifdef SCTP_TIMER_BASED_ASCONF
1823 /* we have more params, so restart our timer */
1824 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep,
1827 /* we have more params, so send out more */
1828 sctp_send_asconf(stcb, net, SCTP_ADDR_NOT_LOCKED);
1835 sctp_is_scopeid_in_nets(struct sctp_tcb *stcb, struct sockaddr *sa)
1837 struct sockaddr_in6 *sin6, *net6;
1838 struct sctp_nets *net;
1840 if (sa->sa_family != AF_INET6) {
1844 sin6 = (struct sockaddr_in6 *)sa;
1845 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) == 0) {
1846 /* not link local address */
1849 /* hunt through our destination nets list for this scope_id */
1850 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1851 if (((struct sockaddr *)(&net->ro._l_addr))->sa_family !=
1854 net6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1855 if (IN6_IS_ADDR_LINKLOCAL(&net6->sin6_addr) == 0)
1857 if (sctp_is_same_scope(sin6, net6)) {
1862 /* didn't find one */
1868 * address management functions
1871 sctp_addr_mgmt_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1872 struct sctp_ifa *ifa, uint16_t type, int addr_locked)
1876 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0 ||
1877 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
1878 /* subset bound, no ASCONF allowed case, so ignore */
1882 * note: we know this is not the subset bound, no ASCONF case eg.
1883 * this is boundall or subset bound w/ASCONF allowed
1886 /* first, make sure that the address is IPv4 or IPv6 and not jailed */
1887 switch (ifa->address.sa.sa_family) {
1890 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1891 &ifa->address.sin6.sin6_addr) != 0) {
1898 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1899 &ifa->address.sin.sin_addr) != 0) {
1908 /* make sure we're "allowed" to add this type of addr */
1909 if (ifa->address.sa.sa_family == AF_INET6) {
1910 /* invalid if we're not a v6 endpoint */
1911 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0)
1913 /* is the v6 addr really valid ? */
1914 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
1919 /* put this address on the "pending/do not use yet" list */
1920 sctp_add_local_addr_restricted(stcb, ifa);
1922 * check address scope if address is out of scope, don't queue
1923 * anything... note: this would leave the address on both inp and
1926 switch (ifa->address.sa.sa_family) {
1930 struct sockaddr_in6 *sin6;
1932 sin6 = &ifa->address.sin6;
1933 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1934 /* we skip unspecifed addresses */
1937 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1938 if (stcb->asoc.scope.local_scope == 0) {
1941 /* is it the right link local scope? */
1942 if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) {
1946 if (stcb->asoc.scope.site_scope == 0 &&
1947 IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
1956 struct sockaddr_in *sin;
1957 struct in6pcb *inp6;
1959 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
1960 /* invalid if we are a v6 only endpoint */
1961 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1962 SCTP_IPV6_V6ONLY(inp6))
1965 sin = &ifa->address.sin;
1966 if (sin->sin_addr.s_addr == 0) {
1967 /* we skip unspecifed addresses */
1970 if (stcb->asoc.scope.ipv4_local_scope == 0 &&
1971 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
1978 /* else, not AF_INET or AF_INET6, so skip */
1982 /* queue an asconf for this address add/delete */
1983 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
1984 /* does the peer do asconf? */
1985 if (stcb->asoc.asconf_supported) {
1986 /* queue an asconf for this addr */
1987 status = sctp_asconf_queue_add(stcb, ifa, type);
1990 * if queued ok, and in the open state, send out the
1991 * ASCONF. If in the non-open state, these will be
1992 * sent when the state goes open.
1995 ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
1996 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED))) {
1997 #ifdef SCTP_TIMER_BASED_ASCONF
1998 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp,
1999 stcb, stcb->asoc.primary_destination);
2001 sctp_send_asconf(stcb, NULL, addr_locked);
2010 sctp_asconf_iterator_ep(struct sctp_inpcb *inp, void *ptr, uint32_t val SCTP_UNUSED)
2012 struct sctp_asconf_iterator *asc;
2013 struct sctp_ifa *ifa;
2014 struct sctp_laddr *l;
2015 int cnt_invalid = 0;
2017 asc = (struct sctp_asconf_iterator *)ptr;
2018 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2020 switch (ifa->address.sa.sa_family) {
2023 /* invalid if we're not a v6 endpoint */
2024 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
2026 if (asc->cnt == cnt_invalid)
2034 /* invalid if we are a v6 only endpoint */
2035 struct in6pcb *inp6;
2037 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
2038 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2039 SCTP_IPV6_V6ONLY(inp6)) {
2041 if (asc->cnt == cnt_invalid)
2048 /* invalid address family */
2050 if (asc->cnt == cnt_invalid)
2058 sctp_asconf_iterator_ep_end(struct sctp_inpcb *inp, void *ptr, uint32_t val SCTP_UNUSED)
2060 struct sctp_ifa *ifa;
2061 struct sctp_asconf_iterator *asc;
2062 struct sctp_laddr *laddr, *nladdr, *l;
2064 /* Only for specific case not bound all */
2065 asc = (struct sctp_asconf_iterator *)ptr;
2066 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2068 if (l->action == SCTP_ADD_IP_ADDRESS) {
2069 LIST_FOREACH(laddr, &inp->sctp_addr_list,
2071 if (laddr->ifa == ifa) {
2077 } else if (l->action == SCTP_DEL_IP_ADDRESS) {
2078 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
2079 /* remove only after all guys are done */
2080 if (laddr->ifa == ifa) {
2081 sctp_del_local_addr_ep(inp, ifa);
2090 sctp_asconf_iterator_stcb(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2091 void *ptr, uint32_t val SCTP_UNUSED)
2093 struct sctp_asconf_iterator *asc;
2094 struct sctp_ifa *ifa;
2095 struct sctp_laddr *l;
2096 int cnt_invalid = 0;
2100 asc = (struct sctp_asconf_iterator *)ptr;
2101 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2105 /* address's vrf_id must be the vrf_id of the assoc */
2106 if (ifa->vrf_id != stcb->asoc.vrf_id) {
2110 /* Same checks again for assoc */
2111 switch (ifa->address.sa.sa_family) {
2115 /* invalid if we're not a v6 endpoint */
2116 struct sockaddr_in6 *sin6;
2118 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
2120 if (asc->cnt == cnt_invalid)
2125 sin6 = &ifa->address.sin6;
2126 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2127 /* we skip unspecifed addresses */
2130 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
2131 &sin6->sin6_addr) != 0) {
2134 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
2135 if (stcb->asoc.scope.local_scope == 0) {
2138 /* is it the right link local scope? */
2139 if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) {
2149 /* invalid if we are a v6 only endpoint */
2150 struct in6pcb *inp6;
2151 struct sockaddr_in *sin;
2153 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
2154 /* invalid if we are a v6 only endpoint */
2155 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2156 SCTP_IPV6_V6ONLY(inp6))
2159 sin = &ifa->address.sin;
2160 if (sin->sin_addr.s_addr == 0) {
2161 /* we skip unspecifed addresses */
2164 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
2165 &sin->sin_addr) != 0) {
2168 if (stcb->asoc.scope.ipv4_local_scope == 0 &&
2169 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
2172 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2173 SCTP_IPV6_V6ONLY(inp6)) {
2175 if (asc->cnt == cnt_invalid)
2184 /* invalid address family */
2186 if (asc->cnt == cnt_invalid)
2193 if (type == SCTP_ADD_IP_ADDRESS) {
2194 /* prevent this address from being used as a source */
2195 sctp_add_local_addr_restricted(stcb, ifa);
2196 } else if (type == SCTP_DEL_IP_ADDRESS) {
2197 struct sctp_nets *net;
2199 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2202 /* delete this address if cached */
2203 if (net->ro._s_addr == ifa) {
2204 sctp_free_ifa(net->ro._s_addr);
2205 net->ro._s_addr = NULL;
2206 net->src_addr_selected = 0;
2210 net->ro.ro_rt = NULL;
2213 * Now we deleted our src address,
2214 * should we not also now reset the
2215 * cwnd/rto to start as if its a new
2218 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
2223 } else if (type == SCTP_SET_PRIM_ADDR) {
2224 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2225 /* must validate the ifa is in the ep */
2226 if (sctp_is_addr_in_ep(stcb->sctp_ep, ifa) == 0) {
2230 /* Need to check scopes for this guy */
2231 if (sctp_is_address_in_scope(ifa, &stcb->asoc.scope, 0) == 0) {
2236 /* queue an asconf for this address add/delete */
2237 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF) &&
2238 stcb->asoc.asconf_supported == 1) {
2239 /* queue an asconf for this addr */
2240 status = sctp_asconf_queue_add(stcb, ifa, type);
2242 * if queued ok, and in the open state, update the
2243 * count of queued params. If in the non-open
2244 * state, these get sent when the assoc goes open.
2246 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
2247 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
2255 * If we have queued params in the open state, send out an ASCONF.
2257 if (num_queued > 0) {
2258 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2263 sctp_asconf_iterator_end(void *ptr, uint32_t val SCTP_UNUSED)
2265 struct sctp_asconf_iterator *asc;
2266 struct sctp_ifa *ifa;
2267 struct sctp_laddr *l, *nl;
2269 asc = (struct sctp_asconf_iterator *)ptr;
2270 LIST_FOREACH_SAFE(l, &asc->list_of_work, sctp_nxt_addr, nl) {
2272 if (l->action == SCTP_ADD_IP_ADDRESS) {
2273 /* Clear the defer use flag */
2274 ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
2277 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), l);
2278 SCTP_DECR_LADDR_COUNT();
2280 SCTP_FREE(asc, SCTP_M_ASC_IT);
2284 * sa is the sockaddr to ask the peer to set primary to.
2285 * returns: 0 = completed, -1 = error
2288 sctp_set_primary_ip_address_sa(struct sctp_tcb *stcb, struct sockaddr *sa)
2291 struct sctp_ifa *ifa;
2293 /* find the ifa for the desired set primary */
2294 vrf_id = stcb->asoc.vrf_id;
2295 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
2297 /* Invalid address */
2301 /* queue an ASCONF:SET_PRIM_ADDR to be sent */
2302 if (!sctp_asconf_queue_add(stcb, ifa, SCTP_SET_PRIM_ADDR)) {
2303 /* set primary queuing succeeded */
2304 SCTPDBG(SCTP_DEBUG_ASCONF1,
2305 "set_primary_ip_address_sa: queued on tcb=%p, ",
2307 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
2308 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
2309 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
2310 #ifdef SCTP_TIMER_BASED_ASCONF
2311 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2312 stcb->sctp_ep, stcb,
2313 stcb->asoc.primary_destination);
2315 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2319 SCTPDBG(SCTP_DEBUG_ASCONF1, "set_primary_ip_address_sa: failed to add to queue on tcb=%p, ",
2321 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
2328 sctp_is_addr_pending(struct sctp_tcb *stcb, struct sctp_ifa *sctp_ifa)
2330 struct sctp_tmit_chunk *chk, *nchk;
2331 unsigned int offset, asconf_limit;
2332 struct sctp_asconf_chunk *acp;
2333 struct sctp_asconf_paramhdr *aph;
2334 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
2335 struct sctp_paramhdr *ph;
2336 int add_cnt, del_cnt;
2337 uint16_t last_param_type;
2339 add_cnt = del_cnt = 0;
2340 last_param_type = 0;
2341 TAILQ_FOREACH_SAFE(chk, &stcb->asoc.asconf_send_queue, sctp_next, nchk) {
2342 if (chk->data == NULL) {
2343 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: No mbuf data?\n");
2347 acp = mtod(chk->data, struct sctp_asconf_chunk *);
2348 offset += sizeof(struct sctp_asconf_chunk);
2349 asconf_limit = ntohs(acp->ch.chunk_length);
2350 ph = (struct sctp_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_paramhdr), aparam_buf);
2352 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get lookup addr!\n");
2355 offset += ntohs(ph->param_length);
2357 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf);
2359 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: Empty ASCONF will be sent?\n");
2362 while (aph != NULL) {
2363 unsigned int param_length, param_type;
2365 param_type = ntohs(aph->ph.param_type);
2366 param_length = ntohs(aph->ph.param_length);
2367 if (offset + param_length > asconf_limit) {
2368 /* parameter goes beyond end of chunk! */
2371 if (param_length > sizeof(aparam_buf)) {
2372 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length (%u) larger than buffer size!\n", param_length);
2375 if (param_length <= sizeof(struct sctp_paramhdr)) {
2376 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length(%u) too short\n", param_length);
2380 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, param_length, aparam_buf);
2382 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get entire param\n");
2386 ph = (struct sctp_paramhdr *)(aph + 1);
2387 if (sctp_addr_match(ph, &sctp_ifa->address.sa) != 0) {
2388 switch (param_type) {
2389 case SCTP_ADD_IP_ADDRESS:
2392 case SCTP_DEL_IP_ADDRESS:
2398 last_param_type = param_type;
2401 offset += SCTP_SIZE32(param_length);
2402 if (offset >= asconf_limit) {
2403 /* no more data in the mbuf chain */
2406 /* get pointer to next asconf param */
2407 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf);
2412 * we want to find the sequences which consist of ADD -> DEL -> ADD
2415 if (add_cnt > del_cnt ||
2416 (add_cnt == del_cnt && last_param_type == SCTP_ADD_IP_ADDRESS)) {
2422 static struct sockaddr *
2423 sctp_find_valid_localaddr(struct sctp_tcb *stcb, int addr_locked)
2425 struct sctp_vrf *vrf = NULL;
2426 struct sctp_ifn *sctp_ifn;
2427 struct sctp_ifa *sctp_ifa;
2429 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2430 SCTP_IPI_ADDR_RLOCK();
2431 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
2433 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2434 SCTP_IPI_ADDR_RUNLOCK();
2437 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
2438 if (stcb->asoc.scope.loopback_scope == 0 &&
2439 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
2440 /* Skip if loopback_scope not set */
2443 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
2444 switch (sctp_ifa->address.sa.sa_family) {
2447 if (stcb->asoc.scope.ipv4_addr_legal) {
2448 struct sockaddr_in *sin;
2450 sin = &sctp_ifa->address.sin;
2451 if (sin->sin_addr.s_addr == 0) {
2452 /* skip unspecifed addresses */
2455 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
2456 &sin->sin_addr) != 0) {
2459 if (stcb->asoc.scope.ipv4_local_scope == 0 &&
2460 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))
2463 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
2464 (!sctp_is_addr_pending(stcb, sctp_ifa)))
2467 * found a valid local v4 address to
2470 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2471 SCTP_IPI_ADDR_RUNLOCK();
2472 return (&sctp_ifa->address.sa);
2478 if (stcb->asoc.scope.ipv6_addr_legal) {
2479 struct sockaddr_in6 *sin6;
2481 if (sctp_ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
2485 sin6 = &sctp_ifa->address.sin6;
2486 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2488 * we skip unspecifed
2493 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
2494 &sin6->sin6_addr) != 0) {
2497 if (stcb->asoc.scope.local_scope == 0 &&
2498 IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
2500 if (stcb->asoc.scope.site_scope == 0 &&
2501 IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))
2504 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
2505 (!sctp_is_addr_pending(stcb, sctp_ifa)))
2508 * found a valid local v6 address to
2511 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2512 SCTP_IPI_ADDR_RUNLOCK();
2513 return (&sctp_ifa->address.sa);
2522 /* no valid addresses found */
2523 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2524 SCTP_IPI_ADDR_RUNLOCK();
2528 static struct sockaddr *
2529 sctp_find_valid_localaddr_ep(struct sctp_tcb *stcb)
2531 struct sctp_laddr *laddr;
2533 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
2534 if (laddr->ifa == NULL) {
2537 /* is the address restricted ? */
2538 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
2539 (!sctp_is_addr_pending(stcb, laddr->ifa)))
2542 /* found a valid local address to use */
2543 return (&laddr->ifa->address.sa);
2545 /* no valid addresses found */
2550 * builds an ASCONF chunk from queued ASCONF params.
2551 * returns NULL on error (no mbuf, no ASCONF params queued, etc).
2554 sctp_compose_asconf(struct sctp_tcb *stcb, int *retlen, int addr_locked)
2556 struct mbuf *m_asconf, *m_asconf_chk;
2557 struct sctp_asconf_addr *aa;
2558 struct sctp_asconf_chunk *acp;
2559 struct sctp_asconf_paramhdr *aph;
2560 struct sctp_asconf_addr_param *aap;
2562 uint32_t correlation_id = 1; /* 0 is reserved... */
2563 caddr_t ptr, lookup_ptr;
2564 uint8_t lookup_used = 0;
2566 /* are there any asconf params to send? */
2567 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
2575 * get a chunk header mbuf and a cluster for the asconf params since
2576 * it's simpler to fill in the asconf chunk header lookup address on
2579 m_asconf_chk = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_chunk), 0, M_NOWAIT, 1, MT_DATA);
2580 if (m_asconf_chk == NULL) {
2582 SCTPDBG(SCTP_DEBUG_ASCONF1,
2583 "compose_asconf: couldn't get chunk mbuf!\n");
2586 m_asconf = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
2587 if (m_asconf == NULL) {
2589 SCTPDBG(SCTP_DEBUG_ASCONF1,
2590 "compose_asconf: couldn't get mbuf!\n");
2591 sctp_m_freem(m_asconf_chk);
2594 SCTP_BUF_LEN(m_asconf_chk) = sizeof(struct sctp_asconf_chunk);
2595 SCTP_BUF_LEN(m_asconf) = 0;
2596 acp = mtod(m_asconf_chk, struct sctp_asconf_chunk *);
2597 memset(acp, 0, sizeof(struct sctp_asconf_chunk));
2598 /* save pointers to lookup address and asconf params */
2599 lookup_ptr = (caddr_t)(acp + 1); /* after the header */
2600 ptr = mtod(m_asconf, caddr_t); /* beginning of cluster */
2602 /* fill in chunk header info */
2603 acp->ch.chunk_type = SCTP_ASCONF;
2604 acp->ch.chunk_flags = 0;
2605 acp->serial_number = htonl(stcb->asoc.asconf_seq_out);
2606 stcb->asoc.asconf_seq_out++;
2608 /* add parameters... up to smallest MTU allowed */
2609 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
2612 /* get the parameter length */
2613 p_length = SCTP_SIZE32(aa->ap.aph.ph.param_length);
2614 /* will it fit in current chunk? */
2615 if ((SCTP_BUF_LEN(m_asconf) + p_length > stcb->asoc.smallest_mtu) ||
2616 (SCTP_BUF_LEN(m_asconf) + p_length > MCLBYTES)) {
2617 /* won't fit, so we're done with this chunk */
2620 /* assign (and store) a correlation id */
2621 aa->ap.aph.correlation_id = correlation_id++;
2624 * fill in address if we're doing a delete this is a simple
2625 * way for us to fill in the correlation address, which
2626 * should only be used by the peer if we're deleting our
2627 * source address and adding a new address (e.g. renumbering
2630 if (lookup_used == 0 &&
2631 (aa->special_del == 0) &&
2632 aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) {
2633 struct sctp_ipv6addr_param *lookup;
2634 uint16_t p_size, addr_size;
2636 lookup = (struct sctp_ipv6addr_param *)lookup_ptr;
2637 lookup->ph.param_type =
2638 htons(aa->ap.addrp.ph.param_type);
2639 if (aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) {
2640 /* copy IPv6 address */
2641 p_size = sizeof(struct sctp_ipv6addr_param);
2642 addr_size = sizeof(struct in6_addr);
2644 /* copy IPv4 address */
2645 p_size = sizeof(struct sctp_ipv4addr_param);
2646 addr_size = sizeof(struct in_addr);
2648 lookup->ph.param_length = htons(SCTP_SIZE32(p_size));
2649 memcpy(lookup->addr, &aa->ap.addrp.addr, addr_size);
2650 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size);
2653 /* copy into current space */
2654 memcpy(ptr, &aa->ap, p_length);
2656 /* network elements and update lengths */
2657 aph = (struct sctp_asconf_paramhdr *)ptr;
2658 aap = (struct sctp_asconf_addr_param *)ptr;
2659 /* correlation_id is transparent to peer, no htonl needed */
2660 aph->ph.param_type = htons(aph->ph.param_type);
2661 aph->ph.param_length = htons(aph->ph.param_length);
2662 aap->addrp.ph.param_type = htons(aap->addrp.ph.param_type);
2663 aap->addrp.ph.param_length = htons(aap->addrp.ph.param_length);
2665 SCTP_BUF_LEN(m_asconf) += SCTP_SIZE32(p_length);
2666 ptr += SCTP_SIZE32(p_length);
2669 * these params are removed off the pending list upon
2670 * getting an ASCONF-ACK back from the peer, just set flag
2674 /* check to see if the lookup addr has been populated yet */
2675 if (lookup_used == 0) {
2676 /* NOTE: if the address param is optional, can skip this... */
2677 /* add any valid (existing) address... */
2678 struct sctp_ipv6addr_param *lookup;
2679 uint16_t p_size, addr_size;
2680 struct sockaddr *found_addr;
2683 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)
2684 found_addr = sctp_find_valid_localaddr(stcb,
2687 found_addr = sctp_find_valid_localaddr_ep(stcb);
2689 lookup = (struct sctp_ipv6addr_param *)lookup_ptr;
2690 if (found_addr != NULL) {
2691 switch (found_addr->sa_family) {
2694 /* copy IPv6 address */
2695 lookup->ph.param_type =
2696 htons(SCTP_IPV6_ADDRESS);
2697 p_size = sizeof(struct sctp_ipv6addr_param);
2698 addr_size = sizeof(struct in6_addr);
2699 addr_ptr = (caddr_t)&((struct sockaddr_in6 *)
2700 found_addr)->sin6_addr;
2705 /* copy IPv4 address */
2706 lookup->ph.param_type =
2707 htons(SCTP_IPV4_ADDRESS);
2708 p_size = sizeof(struct sctp_ipv4addr_param);
2709 addr_size = sizeof(struct in_addr);
2710 addr_ptr = (caddr_t)&((struct sockaddr_in *)
2711 found_addr)->sin_addr;
2720 lookup->ph.param_length = htons(SCTP_SIZE32(p_size));
2721 memcpy(lookup->addr, addr_ptr, addr_size);
2722 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size);
2724 /* uh oh... don't have any address?? */
2725 SCTPDBG(SCTP_DEBUG_ASCONF1,
2726 "compose_asconf: no lookup addr!\n");
2727 /* XXX for now, we send a IPv4 address of 0.0.0.0 */
2728 lookup->ph.param_type = htons(SCTP_IPV4_ADDRESS);
2729 lookup->ph.param_length = htons(SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param)));
2730 memset(lookup->addr, 0, sizeof(struct in_addr));
2731 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param));
2734 /* chain it all together */
2735 SCTP_BUF_NEXT(m_asconf_chk) = m_asconf;
2736 *retlen = SCTP_BUF_LEN(m_asconf_chk) + SCTP_BUF_LEN(m_asconf);
2737 acp->ch.chunk_length = htons(*retlen);
2739 return (m_asconf_chk);
2743 * section to handle address changes before an association is up eg. changes
2744 * during INIT/INIT-ACK/COOKIE-ECHO handshake
2748 * processes the (local) addresses in the INIT-ACK chunk
2751 sctp_process_initack_addresses(struct sctp_tcb *stcb, struct mbuf *m,
2752 unsigned int offset, unsigned int length)
2754 struct sctp_paramhdr tmp_param, *ph;
2755 uint16_t plen, ptype;
2756 struct sctp_ifa *sctp_ifa;
2757 union sctp_sockstore store;
2759 struct sctp_ipv6addr_param addr6_store;
2762 struct sctp_ipv4addr_param addr4_store;
2765 SCTPDBG(SCTP_DEBUG_ASCONF2, "processing init-ack addresses\n");
2766 if (stcb == NULL) /* Un-needed check for SA */
2769 /* convert to upper bound */
2772 if ((offset + sizeof(struct sctp_paramhdr)) > length) {
2775 /* go through the addresses in the init-ack */
2776 ph = (struct sctp_paramhdr *)
2777 sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr),
2778 (uint8_t *)&tmp_param);
2779 while (ph != NULL) {
2780 ptype = ntohs(ph->param_type);
2781 plen = ntohs(ph->param_length);
2784 case SCTP_IPV6_ADDRESS:
2786 struct sctp_ipv6addr_param *a6p;
2788 /* get the entire IPv6 address param */
2789 a6p = (struct sctp_ipv6addr_param *)
2790 sctp_m_getptr(m, offset,
2791 sizeof(struct sctp_ipv6addr_param),
2792 (uint8_t *)&addr6_store);
2793 if (plen != sizeof(struct sctp_ipv6addr_param) ||
2797 memset(&store, 0, sizeof(union sctp_sockstore));
2798 store.sin6.sin6_family = AF_INET6;
2799 store.sin6.sin6_len = sizeof(struct sockaddr_in6);
2800 store.sin6.sin6_port = stcb->rport;
2801 memcpy(&store.sin6.sin6_addr, a6p->addr, sizeof(struct in6_addr));
2806 case SCTP_IPV4_ADDRESS:
2808 struct sctp_ipv4addr_param *a4p;
2810 /* get the entire IPv4 address param */
2811 a4p = (struct sctp_ipv4addr_param *)sctp_m_getptr(m, offset,
2812 sizeof(struct sctp_ipv4addr_param),
2813 (uint8_t *)&addr4_store);
2814 if (plen != sizeof(struct sctp_ipv4addr_param) ||
2818 memset(&store, 0, sizeof(union sctp_sockstore));
2819 store.sin.sin_family = AF_INET;
2820 store.sin.sin_len = sizeof(struct sockaddr_in);
2821 store.sin.sin_port = stcb->rport;
2822 store.sin.sin_addr.s_addr = a4p->addr;
2830 /* see if this address really (still) exists */
2831 sctp_ifa = sctp_find_ifa_by_addr(&store.sa, stcb->asoc.vrf_id,
2832 SCTP_ADDR_NOT_LOCKED);
2833 if (sctp_ifa == NULL) {
2834 /* address doesn't exist anymore */
2837 /* are ASCONFs allowed ? */
2838 if ((sctp_is_feature_on(stcb->sctp_ep,
2839 SCTP_PCB_FLAGS_DO_ASCONF)) &&
2840 stcb->asoc.asconf_supported) {
2841 /* queue an ASCONF DEL_IP_ADDRESS */
2842 status = sctp_asconf_queue_sa_delete(stcb, &store.sa);
2844 * if queued ok, and in correct state, send
2848 SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) {
2849 #ifdef SCTP_TIMER_BASED_ASCONF
2850 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2851 stcb->sctp_ep, stcb,
2852 stcb->asoc.primary_destination);
2854 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2862 * Sanity check: Make sure the length isn't 0, otherwise
2863 * we'll be stuck in this loop for a long time...
2865 if (SCTP_SIZE32(plen) == 0) {
2866 SCTP_PRINTF("process_initack_addrs: bad len (%d) type=%xh\n",
2870 /* get next parameter */
2871 offset += SCTP_SIZE32(plen);
2872 if ((offset + sizeof(struct sctp_paramhdr)) > length)
2874 ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset,
2875 sizeof(struct sctp_paramhdr), (uint8_t *)&tmp_param);
2879 /* FIX ME: need to verify return result for v6 address type if v6 disabled */
2881 * checks to see if a specific address is in the initack address list returns
2882 * 1 if found, 0 if not
2885 sctp_addr_in_initack(struct mbuf *m, uint32_t offset, uint32_t length, struct sockaddr *sa)
2887 struct sctp_paramhdr tmp_param, *ph;
2888 uint16_t plen, ptype;
2890 struct sockaddr_in *sin;
2891 struct sctp_ipv4addr_param *a4p;
2892 struct sctp_ipv6addr_param addr4_store;
2895 struct sockaddr_in6 *sin6;
2896 struct sctp_ipv6addr_param *a6p;
2897 struct sctp_ipv6addr_param addr6_store;
2898 struct sockaddr_in6 sin6_tmp;
2901 switch (sa->sa_family) {
2914 SCTPDBG(SCTP_DEBUG_ASCONF2, "find_initack_addr: starting search for ");
2915 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, sa);
2916 /* convert to upper bound */
2919 if ((offset + sizeof(struct sctp_paramhdr)) > length) {
2920 SCTPDBG(SCTP_DEBUG_ASCONF1,
2921 "find_initack_addr: invalid offset?\n");
2924 /* go through the addresses in the init-ack */
2925 ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset,
2926 sizeof(struct sctp_paramhdr), (uint8_t *)&tmp_param);
2927 while (ph != NULL) {
2928 ptype = ntohs(ph->param_type);
2929 plen = ntohs(ph->param_length);
2932 case SCTP_IPV6_ADDRESS:
2933 if (sa->sa_family == AF_INET6) {
2934 /* get the entire IPv6 address param */
2935 if (plen != sizeof(struct sctp_ipv6addr_param)) {
2938 /* get the entire IPv6 address param */
2939 a6p = (struct sctp_ipv6addr_param *)
2940 sctp_m_getptr(m, offset,
2941 sizeof(struct sctp_ipv6addr_param),
2942 (uint8_t *)&addr6_store);
2946 sin6 = (struct sockaddr_in6 *)sa;
2947 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2948 /* create a copy and clear scope */
2949 memcpy(&sin6_tmp, sin6,
2950 sizeof(struct sockaddr_in6));
2952 in6_clearscope(&sin6->sin6_addr);
2954 if (memcmp(&sin6->sin6_addr, a6p->addr,
2955 sizeof(struct in6_addr)) == 0) {
2963 case SCTP_IPV4_ADDRESS:
2964 if (sa->sa_family == AF_INET) {
2965 if (plen != sizeof(struct sctp_ipv4addr_param)) {
2968 /* get the entire IPv4 address param */
2969 a4p = (struct sctp_ipv4addr_param *)
2970 sctp_m_getptr(m, offset,
2971 sizeof(struct sctp_ipv4addr_param),
2972 (uint8_t *)&addr4_store);
2976 sin = (struct sockaddr_in *)sa;
2977 if (sin->sin_addr.s_addr == a4p->addr) {
2987 /* get next parameter */
2988 offset += SCTP_SIZE32(plen);
2989 if (offset + sizeof(struct sctp_paramhdr) > length) {
2992 ph = (struct sctp_paramhdr *)
2993 sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr),
2994 (uint8_t *)&tmp_param);
3001 * makes sure that the current endpoint local addr list is consistent with
3002 * the new association (eg. subset bound, asconf allowed) adds addresses as
3006 sctp_check_address_list_ep(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3007 int length, struct sockaddr *init_addr)
3009 struct sctp_laddr *laddr;
3011 /* go through the endpoint list */
3012 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
3013 /* be paranoid and validate the laddr */
3014 if (laddr->ifa == NULL) {
3015 SCTPDBG(SCTP_DEBUG_ASCONF1,
3016 "check_addr_list_ep: laddr->ifa is NULL");
3019 if (laddr->ifa == NULL) {
3020 SCTPDBG(SCTP_DEBUG_ASCONF1, "check_addr_list_ep: laddr->ifa->ifa_addr is NULL");
3023 /* do i have it implicitly? */
3024 if (sctp_cmpaddr(&laddr->ifa->address.sa, init_addr)) {
3027 /* check to see if in the init-ack */
3028 if (!sctp_addr_in_initack(m, offset, length, &laddr->ifa->address.sa)) {
3030 sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb, laddr->ifa,
3031 SCTP_ADD_IP_ADDRESS, SCTP_ADDR_NOT_LOCKED);
3037 * makes sure that the current kernel address list is consistent with the new
3038 * association (with all addrs bound) adds addresses as necessary
3041 sctp_check_address_list_all(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3042 int length, struct sockaddr *init_addr,
3043 uint16_t local_scope, uint16_t site_scope,
3044 uint16_t ipv4_scope, uint16_t loopback_scope)
3046 struct sctp_vrf *vrf = NULL;
3047 struct sctp_ifn *sctp_ifn;
3048 struct sctp_ifa *sctp_ifa;
3051 struct sockaddr_in *sin;
3054 struct sockaddr_in6 *sin6;
3058 vrf_id = stcb->asoc.vrf_id;
3062 SCTP_IPI_ADDR_RLOCK();
3063 vrf = sctp_find_vrf(vrf_id);
3065 SCTP_IPI_ADDR_RUNLOCK();
3068 /* go through all our known interfaces */
3069 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
3070 if (loopback_scope == 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
3071 /* skip loopback interface */
3074 /* go through each interface address */
3075 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
3076 /* do i have it implicitly? */
3077 if (sctp_cmpaddr(&sctp_ifa->address.sa, init_addr)) {
3080 switch (sctp_ifa->address.sa.sa_family) {
3083 sin = &sctp_ifa->address.sin;
3084 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
3085 &sin->sin_addr) != 0) {
3088 if ((ipv4_scope == 0) &&
3089 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
3090 /* private address not in scope */
3097 sin6 = &sctp_ifa->address.sin6;
3098 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
3099 &sin6->sin6_addr) != 0) {
3102 if ((local_scope == 0) &&
3103 (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))) {
3106 if ((site_scope == 0) &&
3107 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
3115 /* check to see if in the init-ack */
3116 if (!sctp_addr_in_initack(m, offset, length, &sctp_ifa->address.sa)) {
3118 sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb,
3119 sctp_ifa, SCTP_ADD_IP_ADDRESS,
3122 } /* end foreach ifa */
3123 } /* end foreach ifn */
3124 SCTP_IPI_ADDR_RUNLOCK();
3128 * validates an init-ack chunk (from a cookie-echo) with current addresses
3129 * adds addresses from the init-ack into our local address list, if needed
3130 * queues asconf adds/deletes addresses as needed and makes appropriate list
3131 * changes for source address selection m, offset: points to the start of the
3132 * address list in an init-ack chunk length: total length of the address
3133 * params only init_addr: address where my INIT-ACK was sent from
3136 sctp_check_address_list(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3137 int length, struct sockaddr *init_addr,
3138 uint16_t local_scope, uint16_t site_scope,
3139 uint16_t ipv4_scope, uint16_t loopback_scope)
3141 /* process the local addresses in the initack */
3142 sctp_process_initack_addresses(stcb, m, offset, length);
3144 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3145 /* bound all case */
3146 sctp_check_address_list_all(stcb, m, offset, length, init_addr,
3147 local_scope, site_scope, ipv4_scope, loopback_scope);
3149 /* subset bound case */
3150 if (sctp_is_feature_on(stcb->sctp_ep,
3151 SCTP_PCB_FLAGS_DO_ASCONF)) {
3152 /* asconf's allowed */
3153 sctp_check_address_list_ep(stcb, m, offset, length,
3156 /* else, no asconfs allowed, so what we sent is what we get */
3161 * sctp_bindx() support
3164 sctp_addr_mgmt_ep_sa(struct sctp_inpcb *inp, struct sockaddr *sa,
3165 uint32_t type, uint32_t vrf_id, struct sctp_ifa *sctp_ifap)
3167 struct sctp_ifa *ifa;
3168 struct sctp_laddr *laddr, *nladdr;
3170 if (sa->sa_len == 0) {
3171 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL);
3176 } else if (type == SCTP_ADD_IP_ADDRESS) {
3177 /* For an add the address MUST be on the system */
3178 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
3179 } else if (type == SCTP_DEL_IP_ADDRESS) {
3180 /* For a delete we need to find it in the inp */
3181 ifa = sctp_find_ifa_in_ep(inp, sa, SCTP_ADDR_NOT_LOCKED);
3186 if (type == SCTP_ADD_IP_ADDRESS) {
3187 sctp_add_local_addr_ep(inp, ifa, type);
3188 } else if (type == SCTP_DEL_IP_ADDRESS) {
3189 if (inp->laddr_count < 2) {
3190 /* can't delete the last local address */
3191 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL);
3194 LIST_FOREACH(laddr, &inp->sctp_addr_list,
3196 if (ifa == laddr->ifa) {
3197 /* Mark in the delete */
3198 laddr->action = type;
3202 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
3204 * There is no need to start the iterator if the inp
3205 * has no associations.
3207 if (type == SCTP_DEL_IP_ADDRESS) {
3208 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3209 if (laddr->ifa == ifa) {
3210 sctp_del_local_addr_ep(inp, ifa);
3215 struct sctp_asconf_iterator *asc;
3216 struct sctp_laddr *wi;
3219 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
3220 sizeof(struct sctp_asconf_iterator),
3223 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM);
3226 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
3228 SCTP_FREE(asc, SCTP_M_ASC_IT);
3229 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM);
3232 LIST_INIT(&asc->list_of_work);
3234 SCTP_INCR_LADDR_COUNT();
3237 atomic_add_int(&ifa->refcount, 1);
3238 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
3239 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
3240 sctp_asconf_iterator_stcb,
3241 sctp_asconf_iterator_ep_end,
3243 SCTP_PCB_ANY_FEATURES,
3244 SCTP_ASOC_ANY_STATE,
3246 sctp_asconf_iterator_end, inp, 0);
3248 SCTP_PRINTF("Failed to initiate iterator for addr_mgmt_ep_sa\n");
3249 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EFAULT);
3250 sctp_asconf_iterator_end(asc, 0);
3256 /* invalid address! */
3257 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EADDRNOTAVAIL);
3258 return (EADDRNOTAVAIL);
3263 sctp_asconf_send_nat_state_update(struct sctp_tcb *stcb,
3264 struct sctp_nets *net)
3266 struct sctp_asconf_addr *aa;
3267 struct sctp_ifa *sctp_ifap;
3268 struct sctp_asconf_tag_param *vtag;
3270 struct sockaddr_in *to;
3273 struct sockaddr_in6 *to6;
3276 SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing net\n");
3280 SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing stcb\n");
3284 * Need to have in the asconf: - vtagparam(my_vtag/peer_vtag) -
3285 * add(0.0.0.0) - del(0.0.0.0) - Any global addresses add(addr)
3287 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3290 /* didn't get memory */
3291 SCTPDBG(SCTP_DEBUG_ASCONF1,
3292 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3295 aa->special_del = 0;
3296 /* fill in asconf address parameter fields */
3297 /* top level elements are "networked" during send */
3299 aa->sent = 0; /* clear sent flag */
3300 vtag = (struct sctp_asconf_tag_param *)&aa->ap.aph;
3301 vtag->aph.ph.param_type = SCTP_NAT_VTAGS;
3302 vtag->aph.ph.param_length = sizeof(struct sctp_asconf_tag_param);
3303 vtag->local_vtag = htonl(stcb->asoc.my_vtag);
3304 vtag->remote_vtag = htonl(stcb->asoc.peer_vtag);
3305 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3307 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3310 /* didn't get memory */
3311 SCTPDBG(SCTP_DEBUG_ASCONF1,
3312 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3315 memset(aa, 0, sizeof(struct sctp_asconf_addr));
3316 /* fill in asconf address parameter fields */
3318 switch (net->ro._l_addr.sa.sa_family) {
3321 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3322 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param);
3323 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
3324 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_param);
3325 /* No need to add an address, we are using 0.0.0.0 */
3326 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3331 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3332 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param);
3333 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
3334 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param);
3335 /* No need to add an address, we are using 0.0.0.0 */
3336 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3340 SCTPDBG(SCTP_DEBUG_ASCONF1,
3341 "sctp_asconf_send_nat_state_update: unknown address family\n");
3342 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
3345 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3348 /* didn't get memory */
3349 SCTPDBG(SCTP_DEBUG_ASCONF1,
3350 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3353 memset(aa, 0, sizeof(struct sctp_asconf_addr));
3354 /* fill in asconf address parameter fields */
3356 switch (net->ro._l_addr.sa.sa_family) {
3359 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3360 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param);
3361 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
3362 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_param);
3363 /* No need to add an address, we are using 0.0.0.0 */
3364 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3369 aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS;
3370 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param);
3371 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
3372 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param);
3373 /* No need to add an address, we are using 0.0.0.0 */
3374 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3378 SCTPDBG(SCTP_DEBUG_ASCONF1,
3379 "sctp_asconf_send_nat_state_update: unknown address family\n");
3380 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
3383 /* Now we must hunt the addresses and add all global addresses */
3384 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3385 struct sctp_vrf *vrf = NULL;
3386 struct sctp_ifn *sctp_ifnp;
3389 vrf_id = stcb->sctp_ep->def_vrf_id;
3390 vrf = sctp_find_vrf(vrf_id);
3395 SCTP_IPI_ADDR_RLOCK();
3396 LIST_FOREACH(sctp_ifnp, &vrf->ifnlist, next_ifn) {
3397 LIST_FOREACH(sctp_ifap, &sctp_ifnp->ifalist, next_ifa) {
3398 switch (sctp_ifap->address.sa.sa_family) {
3401 to = &sctp_ifap->address.sin;
3402 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
3403 &to->sin_addr) != 0) {
3406 if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) {
3409 if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) {
3416 to6 = &sctp_ifap->address.sin6;
3417 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
3418 &to6->sin6_addr) != 0) {
3421 if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) {
3424 if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) {
3432 sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS);
3435 SCTP_IPI_ADDR_RUNLOCK();
3437 struct sctp_laddr *laddr;
3439 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
3440 if (laddr->ifa == NULL) {
3443 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED)
3445 * Address being deleted by the system, dont
3449 if (laddr->action == SCTP_DEL_IP_ADDRESS) {
3451 * Address being deleted on this ep don't
3456 sctp_ifap = laddr->ifa;
3457 switch (sctp_ifap->address.sa.sa_family) {
3460 to = &sctp_ifap->address.sin;
3461 if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) {
3464 if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) {
3471 to6 = &sctp_ifap->address.sin6;
3472 if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) {
3475 if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) {
3483 sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS);
3487 /* Now we must send the asconf into the queue */
3488 sctp_send_asconf(stcb, net, SCTP_ADDR_NOT_LOCKED);