2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
37 #include <netinet/sctp_var.h>
38 #include <netinet/sctp_sysctl.h>
39 #include <netinet/sctp_pcb.h>
40 #include <netinet/sctp_header.h>
41 #include <netinet/sctputil.h>
42 #include <netinet/sctp_output.h>
43 #include <netinet/sctp_asconf.h>
44 #include <netinet/sctp_timer.h>
48 * SCTP_DEBUG_ASCONF1: protocol info, general info and errors
49 * SCTP_DEBUG_ASCONF2: detailed info
56 * An ASCONF parameter queue exists per asoc which holds the pending address
57 * operations. Lists are updated upon receipt of ASCONF-ACK.
59 * A restricted_addrs list exists per assoc to hold local addresses that are
60 * not (yet) usable by the assoc as a source address. These addresses are
61 * either pending an ASCONF operation (and exist on the ASCONF parameter
62 * queue), or they are permanently restricted (the peer has returned an
63 * ERROR indication to an ASCONF(ADD), or the peer does not support ASCONF).
65 * Deleted addresses are always immediately removed from the lists as they will
66 * (shortly) no longer exist in the kernel. We send ASCONFs as a courtesy,
71 * ASCONF parameter processing.
72 * response_required: set if a reply is required (eg. SUCCESS_REPORT).
73 * returns a mbuf to an "error" response parameter or NULL/"success" if ok.
74 * FIX: allocating this many mbufs on the fly is pretty inefficient...
77 sctp_asconf_success_response(uint32_t id)
79 struct mbuf *m_reply = NULL;
80 struct sctp_asconf_paramhdr *aph;
82 m_reply = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_paramhdr),
83 0, M_NOWAIT, 1, MT_DATA);
84 if (m_reply == NULL) {
85 SCTPDBG(SCTP_DEBUG_ASCONF1,
86 "asconf_success_response: couldn't get mbuf!\n");
89 aph = mtod(m_reply, struct sctp_asconf_paramhdr *);
90 aph->correlation_id = id;
91 aph->ph.param_type = htons(SCTP_SUCCESS_REPORT);
92 aph->ph.param_length = sizeof(struct sctp_asconf_paramhdr);
93 SCTP_BUF_LEN(m_reply) = aph->ph.param_length;
94 aph->ph.param_length = htons(aph->ph.param_length);
100 sctp_asconf_error_response(uint32_t id, uint16_t cause, uint8_t * error_tlv,
103 struct mbuf *m_reply = NULL;
104 struct sctp_asconf_paramhdr *aph;
105 struct sctp_error_cause *error;
108 m_reply = sctp_get_mbuf_for_msg((sizeof(struct sctp_asconf_paramhdr) +
110 sizeof(struct sctp_error_cause)),
111 0, M_NOWAIT, 1, MT_DATA);
112 if (m_reply == NULL) {
113 SCTPDBG(SCTP_DEBUG_ASCONF1,
114 "asconf_error_response: couldn't get mbuf!\n");
117 aph = mtod(m_reply, struct sctp_asconf_paramhdr *);
118 error = (struct sctp_error_cause *)(aph + 1);
120 aph->correlation_id = id;
121 aph->ph.param_type = htons(SCTP_ERROR_CAUSE_IND);
122 error->code = htons(cause);
123 error->length = tlv_length + sizeof(struct sctp_error_cause);
124 aph->ph.param_length = error->length +
125 sizeof(struct sctp_asconf_paramhdr);
127 if (aph->ph.param_length > MLEN) {
128 SCTPDBG(SCTP_DEBUG_ASCONF1,
129 "asconf_error_response: tlv_length (%xh) too big\n",
131 sctp_m_freem(m_reply); /* discard */
134 if (error_tlv != NULL) {
135 tlv = (uint8_t *) (error + 1);
136 memcpy(tlv, error_tlv, tlv_length);
138 SCTP_BUF_LEN(m_reply) = aph->ph.param_length;
139 error->length = htons(error->length);
140 aph->ph.param_length = htons(aph->ph.param_length);
146 sctp_process_asconf_add_ip(struct sockaddr *src, struct sctp_asconf_paramhdr *aph,
147 struct sctp_tcb *stcb, int send_hb, int response_required)
149 struct sctp_nets *net;
150 struct mbuf *m_reply = NULL;
151 union sctp_sockstore store;
152 struct sctp_paramhdr *ph;
153 uint16_t param_type, aparam_length;
155 #if defined(INET) || defined(INET6)
156 uint16_t param_length;
160 int zero_address = 0;
164 struct sockaddr_in *sin;
165 struct sctp_ipv4addr_param *v4addr;
169 struct sockaddr_in6 *sin6;
170 struct sctp_ipv6addr_param *v6addr;
174 aparam_length = ntohs(aph->ph.param_length);
175 ph = (struct sctp_paramhdr *)(aph + 1);
176 param_type = ntohs(ph->param_type);
177 #if defined(INET) || defined(INET6)
178 param_length = ntohs(ph->param_length);
181 switch (param_type) {
183 case SCTP_IPV4_ADDRESS:
184 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
185 /* invalid param size */
188 v4addr = (struct sctp_ipv4addr_param *)ph;
190 bzero(sin, sizeof(*sin));
191 sin->sin_family = AF_INET;
192 sin->sin_len = sizeof(struct sockaddr_in);
193 sin->sin_port = stcb->rport;
194 sin->sin_addr.s_addr = v4addr->addr;
195 if ((sin->sin_addr.s_addr == INADDR_BROADCAST) ||
196 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
199 if (sin->sin_addr.s_addr == INADDR_ANY)
201 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding ");
202 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
206 case SCTP_IPV6_ADDRESS:
207 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
208 /* invalid param size */
211 v6addr = (struct sctp_ipv6addr_param *)ph;
213 bzero(sin6, sizeof(*sin6));
214 sin6->sin6_family = AF_INET6;
215 sin6->sin6_len = sizeof(struct sockaddr_in6);
216 sin6->sin6_port = stcb->rport;
217 memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr,
218 sizeof(struct in6_addr));
219 if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
222 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
224 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding ");
225 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
229 m_reply = sctp_asconf_error_response(aph->correlation_id,
230 SCTP_CAUSE_INVALID_PARAM, (uint8_t *) aph,
235 /* if 0.0.0.0/::0, add the source address instead */
236 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
238 SCTPDBG(SCTP_DEBUG_ASCONF1,
239 "process_asconf_add_ip: using source addr ");
240 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src);
242 /* add the address */
244 m_reply = sctp_asconf_error_response(aph->correlation_id,
245 SCTP_CAUSE_INVALID_PARAM, (uint8_t *) aph,
247 } else if (sctp_add_remote_addr(stcb, sa, &net, SCTP_DONOT_SETSCOPE,
248 SCTP_ADDR_DYNAMIC_ADDED) != 0) {
249 SCTPDBG(SCTP_DEBUG_ASCONF1,
250 "process_asconf_add_ip: error adding address\n");
251 m_reply = sctp_asconf_error_response(aph->correlation_id,
252 SCTP_CAUSE_RESOURCE_SHORTAGE, (uint8_t *) aph,
255 /* notify upper layer */
256 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_ADD_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
257 if (response_required) {
259 sctp_asconf_success_response(aph->correlation_id);
261 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb, net);
262 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep,
265 sctp_send_hb(stcb, net, SCTP_SO_NOT_LOCKED);
272 sctp_asconf_del_remote_addrs_except(struct sctp_tcb *stcb, struct sockaddr *src)
274 struct sctp_nets *src_net, *net;
276 /* make sure the source address exists as a destination net */
277 src_net = sctp_findnet(stcb, src);
278 if (src_net == NULL) {
282 /* delete all destination addresses except the source */
283 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
284 if (net != src_net) {
285 /* delete this address */
286 sctp_remove_net(stcb, net);
287 SCTPDBG(SCTP_DEBUG_ASCONF1,
288 "asconf_del_remote_addrs_except: deleting ");
289 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1,
290 (struct sockaddr *)&net->ro._l_addr);
291 /* notify upper layer */
292 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0,
293 (struct sockaddr *)&net->ro._l_addr, SCTP_SO_NOT_LOCKED);
300 sctp_process_asconf_delete_ip(struct sockaddr *src,
301 struct sctp_asconf_paramhdr *aph,
302 struct sctp_tcb *stcb, int response_required)
304 struct mbuf *m_reply = NULL;
305 union sctp_sockstore store;
306 struct sctp_paramhdr *ph;
307 uint16_t param_type, aparam_length;
309 #if defined(INET) || defined(INET6)
310 uint16_t param_length;
314 int zero_address = 0;
318 struct sockaddr_in *sin;
319 struct sctp_ipv4addr_param *v4addr;
323 struct sockaddr_in6 *sin6;
324 struct sctp_ipv6addr_param *v6addr;
328 aparam_length = ntohs(aph->ph.param_length);
329 ph = (struct sctp_paramhdr *)(aph + 1);
330 param_type = ntohs(ph->param_type);
331 #if defined(INET) || defined(INET6)
332 param_length = ntohs(ph->param_length);
335 switch (param_type) {
337 case SCTP_IPV4_ADDRESS:
338 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
339 /* invalid param size */
342 v4addr = (struct sctp_ipv4addr_param *)ph;
344 bzero(sin, sizeof(*sin));
345 sin->sin_family = AF_INET;
346 sin->sin_len = sizeof(struct sockaddr_in);
347 sin->sin_port = stcb->rport;
348 sin->sin_addr.s_addr = v4addr->addr;
349 if (sin->sin_addr.s_addr == INADDR_ANY)
351 SCTPDBG(SCTP_DEBUG_ASCONF1,
352 "process_asconf_delete_ip: deleting ");
353 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
357 case SCTP_IPV6_ADDRESS:
358 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
359 /* invalid param size */
362 v6addr = (struct sctp_ipv6addr_param *)ph;
364 bzero(sin6, sizeof(*sin6));
365 sin6->sin6_family = AF_INET6;
366 sin6->sin6_len = sizeof(struct sockaddr_in6);
367 sin6->sin6_port = stcb->rport;
368 memcpy(&sin6->sin6_addr, v6addr->addr,
369 sizeof(struct in6_addr));
370 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
372 SCTPDBG(SCTP_DEBUG_ASCONF1,
373 "process_asconf_delete_ip: deleting ");
374 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
378 m_reply = sctp_asconf_error_response(aph->correlation_id,
379 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph,
384 /* make sure the source address is not being deleted */
385 if (sctp_cmpaddr(sa, src)) {
386 /* trying to delete the source address! */
387 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete source addr\n");
388 m_reply = sctp_asconf_error_response(aph->correlation_id,
389 SCTP_CAUSE_DELETING_SRC_ADDR, (uint8_t *) aph,
393 /* if deleting 0.0.0.0/::0, delete all addresses except src addr */
394 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
395 result = sctp_asconf_del_remote_addrs_except(stcb, src);
398 /* src address did not exist? */
399 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: src addr does not exist?\n");
400 /* what error to reply with?? */
402 sctp_asconf_error_response(aph->correlation_id,
403 SCTP_CAUSE_REQUEST_REFUSED, (uint8_t *) aph,
405 } else if (response_required) {
407 sctp_asconf_success_response(aph->correlation_id);
411 /* delete the address */
412 result = sctp_del_remote_addr(stcb, sa);
414 * note if result == -2, the address doesn't exist in the asoc but
415 * since it's being deleted anyways, we just ack the delete -- but
416 * this probably means something has already gone awry
419 /* only one address in the asoc */
420 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete last IP addr!\n");
421 m_reply = sctp_asconf_error_response(aph->correlation_id,
422 SCTP_CAUSE_DELETING_LAST_ADDR, (uint8_t *) aph,
425 if (response_required) {
426 m_reply = sctp_asconf_success_response(aph->correlation_id);
428 /* notify upper layer */
429 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
435 sctp_process_asconf_set_primary(struct sockaddr *src,
436 struct sctp_asconf_paramhdr *aph,
437 struct sctp_tcb *stcb, int response_required)
439 struct mbuf *m_reply = NULL;
440 union sctp_sockstore store;
441 struct sctp_paramhdr *ph;
442 uint16_t param_type, aparam_length;
444 #if defined(INET) || defined(INET6)
445 uint16_t param_length;
449 int zero_address = 0;
452 struct sockaddr_in *sin;
453 struct sctp_ipv4addr_param *v4addr;
457 struct sockaddr_in6 *sin6;
458 struct sctp_ipv6addr_param *v6addr;
462 aparam_length = ntohs(aph->ph.param_length);
463 ph = (struct sctp_paramhdr *)(aph + 1);
464 param_type = ntohs(ph->param_type);
465 #if defined(INET) || defined(INET6)
466 param_length = ntohs(ph->param_length);
469 switch (param_type) {
471 case SCTP_IPV4_ADDRESS:
472 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
473 /* invalid param size */
476 v4addr = (struct sctp_ipv4addr_param *)ph;
478 bzero(sin, sizeof(*sin));
479 sin->sin_family = AF_INET;
480 sin->sin_len = sizeof(struct sockaddr_in);
481 sin->sin_addr.s_addr = v4addr->addr;
482 if (sin->sin_addr.s_addr == INADDR_ANY)
484 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: ");
485 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
489 case SCTP_IPV6_ADDRESS:
490 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
491 /* invalid param size */
494 v6addr = (struct sctp_ipv6addr_param *)ph;
496 bzero(sin6, sizeof(*sin6));
497 sin6->sin6_family = AF_INET6;
498 sin6->sin6_len = sizeof(struct sockaddr_in6);
499 memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr,
500 sizeof(struct in6_addr));
501 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
503 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: ");
504 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
508 m_reply = sctp_asconf_error_response(aph->correlation_id,
509 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph,
514 /* if 0.0.0.0/::0, use the source address instead */
515 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
517 SCTPDBG(SCTP_DEBUG_ASCONF1,
518 "process_asconf_set_primary: using source addr ");
519 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src);
521 /* set the primary address */
522 if (sctp_set_primary_addr(stcb, sa, NULL) == 0) {
523 SCTPDBG(SCTP_DEBUG_ASCONF1,
524 "process_asconf_set_primary: primary address set\n");
525 /* notify upper layer */
526 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_SET_PRIMARY, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
527 if ((stcb->asoc.primary_destination->dest_state & SCTP_ADDR_REACHABLE) &&
528 (!(stcb->asoc.primary_destination->dest_state & SCTP_ADDR_PF)) &&
529 (stcb->asoc.alternate)) {
530 sctp_free_remote_addr(stcb->asoc.alternate);
531 stcb->asoc.alternate = NULL;
533 if (response_required) {
534 m_reply = sctp_asconf_success_response(aph->correlation_id);
537 * Mobility adaptation. Ideally, when the reception of SET
538 * PRIMARY with DELETE IP ADDRESS of the previous primary
539 * destination, unacknowledged DATA are retransmitted
540 * immediately to the new primary destination for seamless
541 * handover. If the destination is UNCONFIRMED and marked to
542 * REQ_PRIM, The retransmission occur when reception of the
543 * HEARTBEAT-ACK. (See sctp_handle_heartbeat_ack in
544 * sctp_input.c) Also, when change of the primary
545 * destination, it is better that all subsequent new DATA
546 * containing already queued DATA are transmitted to the new
547 * primary destination. (by micchie)
549 if ((sctp_is_mobility_feature_on(stcb->sctp_ep,
550 SCTP_MOBILITY_BASE) ||
551 sctp_is_mobility_feature_on(stcb->sctp_ep,
552 SCTP_MOBILITY_FASTHANDOFF)) &&
553 sctp_is_mobility_feature_on(stcb->sctp_ep,
554 SCTP_MOBILITY_PRIM_DELETED) &&
555 (stcb->asoc.primary_destination->dest_state &
556 SCTP_ADDR_UNCONFIRMED) == 0) {
558 sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTP_TIMER + SCTP_LOC_7);
559 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
560 SCTP_MOBILITY_FASTHANDOFF)) {
561 sctp_assoc_immediate_retrans(stcb,
562 stcb->asoc.primary_destination);
564 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
565 SCTP_MOBILITY_BASE)) {
566 sctp_move_chunks_from_net(stcb,
567 stcb->asoc.deleted_primary);
569 sctp_delete_prim_timer(stcb->sctp_ep, stcb,
570 stcb->asoc.deleted_primary);
573 /* couldn't set the requested primary address! */
574 SCTPDBG(SCTP_DEBUG_ASCONF1,
575 "process_asconf_set_primary: set primary failed!\n");
576 /* must have been an invalid address, so report */
577 m_reply = sctp_asconf_error_response(aph->correlation_id,
578 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph,
586 * handles an ASCONF chunk.
587 * if all parameters are processed ok, send a plain (empty) ASCONF-ACK
590 sctp_handle_asconf(struct mbuf *m, unsigned int offset,
591 struct sockaddr *src,
592 struct sctp_asconf_chunk *cp, struct sctp_tcb *stcb,
595 struct sctp_association *asoc;
597 struct mbuf *n, *m_ack, *m_result, *m_tail;
598 struct sctp_asconf_ack_chunk *ack_cp;
599 struct sctp_asconf_paramhdr *aph;
600 struct sctp_ipv6addr_param *p_addr;
601 unsigned int asconf_limit, cnt;
602 int error = 0; /* did an error occur? */
604 /* asconf param buffer */
605 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
606 struct sctp_asconf_ack *ack, *ack_next;
608 /* verify minimum length */
609 if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_chunk)) {
610 SCTPDBG(SCTP_DEBUG_ASCONF1,
611 "handle_asconf: chunk too small = %xh\n",
612 ntohs(cp->ch.chunk_length));
616 serial_num = ntohl(cp->serial_number);
618 if (SCTP_TSN_GE(asoc->asconf_seq_in, serial_num)) {
619 /* got a duplicate ASCONF */
620 SCTPDBG(SCTP_DEBUG_ASCONF1,
621 "handle_asconf: got duplicate serial number = %xh\n",
624 } else if (serial_num != (asoc->asconf_seq_in + 1)) {
625 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: incorrect serial number = %xh (expected next = %xh)\n",
626 serial_num, asoc->asconf_seq_in + 1);
629 /* it's the expected "next" sequence number, so process it */
630 asoc->asconf_seq_in = serial_num; /* update sequence */
631 /* get length of all the param's in the ASCONF */
632 asconf_limit = offset + ntohs(cp->ch.chunk_length);
633 SCTPDBG(SCTP_DEBUG_ASCONF1,
634 "handle_asconf: asconf_limit=%u, sequence=%xh\n",
635 asconf_limit, serial_num);
638 /* delete old cache */
639 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: Now processing first ASCONF. Try to delete old cache\n");
641 TAILQ_FOREACH_SAFE(ack, &asoc->asconf_ack_sent, next, ack_next) {
642 if (ack->serial_number == serial_num)
644 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: delete old(%u) < first(%u)\n",
645 ack->serial_number, serial_num);
646 TAILQ_REMOVE(&asoc->asconf_ack_sent, ack, next);
647 if (ack->data != NULL) {
648 sctp_m_freem(ack->data);
650 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), ack);
653 m_ack = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_ack_chunk), 0,
654 M_NOWAIT, 1, MT_DATA);
656 SCTPDBG(SCTP_DEBUG_ASCONF1,
657 "handle_asconf: couldn't get mbuf!\n");
660 m_tail = m_ack; /* current reply chain's tail */
662 /* fill in ASCONF-ACK header */
663 ack_cp = mtod(m_ack, struct sctp_asconf_ack_chunk *);
664 ack_cp->ch.chunk_type = SCTP_ASCONF_ACK;
665 ack_cp->ch.chunk_flags = 0;
666 ack_cp->serial_number = htonl(serial_num);
667 /* set initial lengths (eg. just an ASCONF-ACK), ntohx at the end! */
668 SCTP_BUF_LEN(m_ack) = sizeof(struct sctp_asconf_ack_chunk);
669 ack_cp->ch.chunk_length = sizeof(struct sctp_asconf_ack_chunk);
671 /* skip the lookup address parameter */
672 offset += sizeof(struct sctp_asconf_chunk);
673 p_addr = (struct sctp_ipv6addr_param *)sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr), (uint8_t *) & aparam_buf);
674 if (p_addr == NULL) {
675 SCTPDBG(SCTP_DEBUG_ASCONF1,
676 "handle_asconf: couldn't get lookup addr!\n");
677 /* respond with a missing/invalid mandatory parameter error */
680 /* param_length is already validated in process_control... */
681 offset += ntohs(p_addr->ph.param_length); /* skip lookup addr */
682 /* get pointer to first asconf param in ASCONF */
683 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, sizeof(struct sctp_asconf_paramhdr), (uint8_t *) & aparam_buf);
685 SCTPDBG(SCTP_DEBUG_ASCONF1, "Empty ASCONF received?\n");
688 /* process through all parameters */
690 while (aph != NULL) {
691 unsigned int param_length, param_type;
693 param_type = ntohs(aph->ph.param_type);
694 param_length = ntohs(aph->ph.param_length);
695 if (offset + param_length > asconf_limit) {
696 /* parameter goes beyond end of chunk! */
702 if (param_length > sizeof(aparam_buf)) {
703 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) larger than buffer size!\n", param_length);
707 if (param_length <= sizeof(struct sctp_paramhdr)) {
708 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) too short\n", param_length);
711 /* get the entire parameter */
712 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf);
714 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: couldn't get entire param\n");
718 switch (param_type) {
719 case SCTP_ADD_IP_ADDRESS:
720 m_result = sctp_process_asconf_add_ip(src, aph, stcb,
721 (cnt < SCTP_BASE_SYSCTL(sctp_hb_maxburst)), error);
724 case SCTP_DEL_IP_ADDRESS:
725 m_result = sctp_process_asconf_delete_ip(src, aph, stcb,
728 case SCTP_ERROR_CAUSE_IND:
729 /* not valid in an ASCONF chunk */
731 case SCTP_SET_PRIM_ADDR:
732 m_result = sctp_process_asconf_set_primary(src, aph,
736 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: sees a NAT VTAG state parameter\n");
738 case SCTP_SUCCESS_REPORT:
739 /* not valid in an ASCONF chunk */
741 case SCTP_ULP_ADAPTATION:
745 if ((param_type & 0x8000) == 0) {
746 /* Been told to STOP at this param */
747 asconf_limit = offset;
749 * FIX FIX - We need to call
750 * sctp_arethere_unrecognized_parameters()
751 * to get a operr and send it for any
752 * param's with the 0x4000 bit set OR do it
753 * here ourselves... note we still must STOP
754 * if the 0x8000 bit is clear.
757 /* unknown/invalid param type */
761 /* add any (error) result to the reply mbuf chain */
762 if (m_result != NULL) {
763 SCTP_BUF_NEXT(m_tail) = m_result;
765 /* update lengths, make sure it's aligned too */
766 SCTP_BUF_LEN(m_result) = SCTP_SIZE32(SCTP_BUF_LEN(m_result));
767 ack_cp->ch.chunk_length += SCTP_BUF_LEN(m_result);
768 /* set flag to force success reports */
771 offset += SCTP_SIZE32(param_length);
772 /* update remaining ASCONF message length to process */
773 if (offset >= asconf_limit) {
774 /* no more data in the mbuf chain */
777 /* get pointer to next asconf param */
778 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset,
779 sizeof(struct sctp_asconf_paramhdr),
780 (uint8_t *) & aparam_buf);
782 /* can't get an asconf paramhdr */
783 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: can't get asconf param hdr!\n");
784 /* FIX ME - add error here... */
789 ack_cp->ch.chunk_length = htons(ack_cp->ch.chunk_length);
790 /* save the ASCONF-ACK reply */
791 ack = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asconf_ack),
792 struct sctp_asconf_ack);
797 ack->serial_number = serial_num;
798 ack->last_sent_to = NULL;
801 for (n = m_ack; n != NULL; n = SCTP_BUF_NEXT(n)) {
802 ack->len += SCTP_BUF_LEN(n);
804 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_ack_sent, ack, next);
806 /* see if last_control_chunk_from is set properly (use IP src addr) */
807 if (stcb->asoc.last_control_chunk_from == NULL) {
809 * this could happen if the source address was just newly
812 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: looking up net for IP source address\n");
813 SCTPDBG(SCTP_DEBUG_ASCONF1, "Looking for IP source: ");
814 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src);
815 /* look up the from address */
816 stcb->asoc.last_control_chunk_from = sctp_findnet(stcb, src);
818 if (stcb->asoc.last_control_chunk_from == NULL) {
819 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: IP source address not found?!\n");
826 * does the address match? returns 0 if not, 1 if so
829 sctp_asconf_addr_match(struct sctp_asconf_addr *aa, struct sockaddr *sa)
831 switch (sa->sa_family) {
836 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
838 if ((aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) &&
839 (memcmp(&aa->ap.addrp.addr, &sin6->sin6_addr,
840 sizeof(struct in6_addr)) == 0)) {
849 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
851 if ((aa->ap.addrp.ph.param_type == SCTP_IPV4_ADDRESS) &&
852 (memcmp(&aa->ap.addrp.addr, &sin->sin_addr,
853 sizeof(struct in_addr)) == 0)) {
866 * does the address match? returns 0 if not, 1 if so
869 sctp_addr_match(struct sctp_paramhdr *ph, struct sockaddr *sa)
871 #if defined(INET) || defined(INET6)
872 uint16_t param_type, param_length;
874 param_type = ntohs(ph->param_type);
875 param_length = ntohs(ph->param_length);
877 switch (sa->sa_family) {
882 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
883 struct sctp_ipv6addr_param *v6addr;
885 v6addr = (struct sctp_ipv6addr_param *)ph;
886 if ((param_type == SCTP_IPV6_ADDRESS) &&
887 (param_length == sizeof(struct sctp_ipv6addr_param)) &&
888 (memcmp(&v6addr->addr, &sin6->sin6_addr,
889 sizeof(struct in6_addr)) == 0)) {
898 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
899 struct sctp_ipv4addr_param *v4addr;
901 v4addr = (struct sctp_ipv4addr_param *)ph;
902 if ((param_type == SCTP_IPV4_ADDRESS) &&
903 (param_length == sizeof(struct sctp_ipv4addr_param)) &&
904 (memcmp(&v4addr->addr, &sin->sin_addr,
905 sizeof(struct in_addr)) == 0)) {
918 * Cleanup for non-responded/OP ERR'd ASCONF
921 sctp_asconf_cleanup(struct sctp_tcb *stcb, struct sctp_nets *net)
924 * clear out any existing asconfs going out
926 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net,
927 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_2);
928 stcb->asoc.asconf_seq_out_acked = stcb->asoc.asconf_seq_out;
929 /* remove the old ASCONF on our outbound queue */
930 sctp_toss_old_asconf(stcb);
934 * cleanup any cached source addresses that may be topologically
935 * incorrect after a new address has been added to this interface.
938 sctp_asconf_nets_cleanup(struct sctp_tcb *stcb, struct sctp_ifn *ifn)
940 struct sctp_nets *net;
943 * Ideally, we want to only clear cached routes and source addresses
944 * that are topologically incorrect. But since there is no easy way
945 * to know whether the newly added address on the ifn would cause a
946 * routing change (i.e. a new egress interface would be chosen)
947 * without doing a new routing lookup and source address selection,
948 * we will (for now) just flush any cached route using a different
949 * ifn (and cached source addrs) and let output re-choose them
950 * during the next send on that net.
952 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
954 * clear any cached route (and cached source address) if the
955 * route's interface is NOT the same as the address change.
956 * If it's the same interface, just clear the cached source
959 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro) &&
961 (SCTP_GET_IF_INDEX_FROM_ROUTE(&net->ro) != ifn->ifn_index))) {
962 /* clear any cached route */
963 RTFREE(net->ro.ro_rt);
964 net->ro.ro_rt = NULL;
966 /* clear any cached source address */
967 if (net->src_addr_selected) {
968 sctp_free_ifa(net->ro._s_addr);
969 net->ro._s_addr = NULL;
970 net->src_addr_selected = 0;
977 sctp_assoc_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *dstnet)
981 if (dstnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
984 if (stcb->asoc.deleted_primary == NULL) {
987 if (!TAILQ_EMPTY(&stcb->asoc.sent_queue)) {
988 SCTPDBG(SCTP_DEBUG_ASCONF1, "assoc_immediate_retrans: Deleted primary is ");
989 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.deleted_primary->ro._l_addr.sa);
990 SCTPDBG(SCTP_DEBUG_ASCONF1, "Current Primary is ");
991 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.primary_destination->ro._l_addr.sa);
992 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb,
993 stcb->asoc.deleted_primary,
994 SCTP_FROM_SCTP_TIMER + SCTP_LOC_8);
995 stcb->asoc.num_send_timers_up--;
996 if (stcb->asoc.num_send_timers_up < 0) {
997 stcb->asoc.num_send_timers_up = 0;
999 SCTP_TCB_LOCK_ASSERT(stcb);
1000 error = sctp_t3rxt_timer(stcb->sctp_ep, stcb,
1001 stcb->asoc.deleted_primary);
1003 SCTP_INP_DECR_REF(stcb->sctp_ep);
1006 SCTP_TCB_LOCK_ASSERT(stcb);
1007 #ifdef SCTP_AUDITING_ENABLED
1008 sctp_auditing(4, stcb->sctp_ep, stcb, stcb->asoc.deleted_primary);
1010 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1011 if ((stcb->asoc.num_send_timers_up == 0) &&
1012 (stcb->asoc.sent_queue_cnt > 0)) {
1013 struct sctp_tmit_chunk *chk;
1015 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1016 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep,
1024 sctp_asconf_queue_mgmt(struct sctp_tcb *, struct sctp_ifa *, uint16_t);
1027 sctp_net_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *net)
1029 struct sctp_tmit_chunk *chk;
1031 SCTPDBG(SCTP_DEBUG_ASCONF1, "net_immediate_retrans: RTO is %d\n", net->RTO);
1032 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net,
1033 SCTP_FROM_SCTP_TIMER + SCTP_LOC_5);
1034 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
1035 net->error_count = 0;
1036 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
1037 if (chk->whoTo == net) {
1038 if (chk->sent < SCTP_DATAGRAM_RESEND) {
1039 chk->sent = SCTP_DATAGRAM_RESEND;
1040 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
1041 sctp_flight_size_decrease(chk);
1042 sctp_total_flight_decrease(stcb, chk);
1043 net->marked_retrans++;
1044 stcb->asoc.marked_retrans++;
1048 if (net->marked_retrans) {
1049 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1054 sctp_path_check_and_react(struct sctp_tcb *stcb, struct sctp_ifa *newifa)
1056 struct sctp_nets *net;
1057 int addrnum, changed;
1060 * If number of local valid addresses is 1, the valid address is
1061 * probably newly added address. Several valid addresses in this
1062 * association. A source address may not be changed. Additionally,
1063 * they can be configured on a same interface as "alias" addresses.
1066 addrnum = sctp_local_addr_count(stcb);
1067 SCTPDBG(SCTP_DEBUG_ASCONF1, "p_check_react(): %d local addresses\n",
1070 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1071 /* clear any cached route and source address */
1072 if (net->ro.ro_rt) {
1073 RTFREE(net->ro.ro_rt);
1074 net->ro.ro_rt = NULL;
1076 if (net->src_addr_selected) {
1077 sctp_free_ifa(net->ro._s_addr);
1078 net->ro._s_addr = NULL;
1079 net->src_addr_selected = 0;
1081 /* Retransmit unacknowledged DATA chunks immediately */
1082 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1083 SCTP_MOBILITY_FASTHANDOFF)) {
1084 sctp_net_immediate_retrans(stcb, net);
1086 /* also, SET PRIMARY is maybe already sent */
1090 /* Multiple local addresses exsist in the association. */
1091 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1092 /* clear any cached route and source address */
1093 if (net->ro.ro_rt) {
1094 RTFREE(net->ro.ro_rt);
1095 net->ro.ro_rt = NULL;
1097 if (net->src_addr_selected) {
1098 sctp_free_ifa(net->ro._s_addr);
1099 net->ro._s_addr = NULL;
1100 net->src_addr_selected = 0;
1103 * Check if the nexthop is corresponding to the new address.
1104 * If the new address is corresponding to the current
1105 * nexthop, the path will be changed. If the new address is
1106 * NOT corresponding to the current nexthop, the path will
1109 SCTP_RTALLOC((sctp_route_t *) & net->ro,
1110 stcb->sctp_ep->def_vrf_id);
1111 if (net->ro.ro_rt == NULL)
1115 switch (net->ro._l_addr.sa.sa_family) {
1118 if (sctp_v4src_match_nexthop(newifa, (sctp_route_t *) & net->ro)) {
1125 if (sctp_v6src_match_nexthop(
1126 &newifa->address.sin6, (sctp_route_t *) & net->ro)) {
1135 * if the newly added address does not relate routing
1136 * information, we skip.
1140 /* Retransmit unacknowledged DATA chunks immediately */
1141 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1142 SCTP_MOBILITY_FASTHANDOFF)) {
1143 sctp_net_immediate_retrans(stcb, net);
1145 /* Send SET PRIMARY for this new address */
1146 if (net == stcb->asoc.primary_destination) {
1147 (void)sctp_asconf_queue_mgmt(stcb, newifa,
1148 SCTP_SET_PRIM_ADDR);
1154 * process an ADD/DELETE IP ack from peer.
1155 * addr: corresponding sctp_ifa to the address being added/deleted.
1156 * type: SCTP_ADD_IP_ADDRESS or SCTP_DEL_IP_ADDRESS.
1157 * flag: 1=success, 0=failure.
1160 sctp_asconf_addr_mgmt_ack(struct sctp_tcb *stcb, struct sctp_ifa *addr, uint32_t flag)
1163 * do the necessary asoc list work- if we get a failure indication,
1164 * leave the address on the assoc's restricted list. If we get a
1165 * success indication, remove the address from the restricted list.
1168 * Note: this will only occur for ADD_IP_ADDRESS, since
1169 * DEL_IP_ADDRESS is never actually added to the list...
1172 /* success case, so remove from the restricted list */
1173 sctp_del_local_addr_restricted(stcb, addr);
1175 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1176 SCTP_MOBILITY_BASE) ||
1177 sctp_is_mobility_feature_on(stcb->sctp_ep,
1178 SCTP_MOBILITY_FASTHANDOFF)) {
1179 sctp_path_check_and_react(stcb, addr);
1182 /* clear any cached/topologically incorrect source addresses */
1183 sctp_asconf_nets_cleanup(stcb, addr->ifn_p);
1185 /* else, leave it on the list */
1189 * add an asconf add/delete/set primary IP address parameter to the queue.
1190 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1191 * returns 0 if queued, -1 if not queued/removed.
1192 * NOTE: if adding, but a delete for the same address is already scheduled
1193 * (and not yet sent out), simply remove it from queue. Same for deleting
1194 * an address already scheduled for add. If a duplicate operation is found,
1195 * ignore the new one.
1198 sctp_asconf_queue_mgmt(struct sctp_tcb *stcb, struct sctp_ifa *ifa,
1201 struct sctp_asconf_addr *aa, *aa_next;
1203 /* make sure the request isn't already in the queue */
1204 TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) {
1205 /* address match? */
1206 if (sctp_asconf_addr_match(aa, &ifa->address.sa) == 0)
1209 * is the request already in queue but not sent? pass the
1210 * request already sent in order to resolve the following
1211 * case: 1. arrival of ADD, then sent 2. arrival of DEL. we
1212 * can't remove the ADD request already sent 3. arrival of
1215 if (aa->ap.aph.ph.param_type == type && aa->sent == 0) {
1218 /* is the negative request already in queue, and not sent */
1219 if ((aa->sent == 0) && (type == SCTP_ADD_IP_ADDRESS) &&
1220 (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS)) {
1221 /* add requested, delete already queued */
1222 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1223 /* remove the ifa from the restricted list */
1224 sctp_del_local_addr_restricted(stcb, ifa);
1225 /* free the asconf param */
1226 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1227 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: add removes queued entry\n");
1230 if ((aa->sent == 0) && (type == SCTP_DEL_IP_ADDRESS) &&
1231 (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS)) {
1232 /* delete requested, add already queued */
1233 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1234 /* remove the aa->ifa from the restricted list */
1235 sctp_del_local_addr_restricted(stcb, aa->ifa);
1236 /* free the asconf param */
1237 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1238 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: delete removes queued entry\n");
1243 /* adding new request to the queue */
1244 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
1247 /* didn't get memory */
1248 SCTPDBG(SCTP_DEBUG_ASCONF1, "asconf_queue_mgmt: failed to get memory!\n");
1251 aa->special_del = 0;
1252 /* fill in asconf address parameter fields */
1253 /* top level elements are "networked" during send */
1254 aa->ap.aph.ph.param_type = type;
1256 atomic_add_int(&ifa->refcount, 1);
1257 /* correlation_id filled in during send routine later... */
1258 switch (ifa->address.sa.sa_family) {
1262 struct sockaddr_in6 *sin6;
1264 sin6 = &ifa->address.sin6;
1265 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
1266 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param));
1267 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) +
1268 sizeof(struct sctp_ipv6addr_param);
1269 memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr,
1270 sizeof(struct in6_addr));
1277 struct sockaddr_in *sin;
1279 sin = &ifa->address.sin;
1280 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
1281 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param));
1282 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) +
1283 sizeof(struct sctp_ipv4addr_param);
1284 memcpy(&aa->ap.addrp.addr, &sin->sin_addr,
1285 sizeof(struct in_addr));
1290 /* invalid family! */
1291 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1295 aa->sent = 0; /* clear sent flag */
1297 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
1299 if (SCTP_BASE_SYSCTL(sctp_debug_on) & SCTP_DEBUG_ASCONF2) {
1300 if (type == SCTP_ADD_IP_ADDRESS) {
1301 SCTP_PRINTF("asconf_queue_mgmt: inserted asconf ADD_IP_ADDRESS: ");
1302 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa);
1303 } else if (type == SCTP_DEL_IP_ADDRESS) {
1304 SCTP_PRINTF("asconf_queue_mgmt: appended asconf DEL_IP_ADDRESS: ");
1305 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa);
1307 SCTP_PRINTF("asconf_queue_mgmt: appended asconf SET_PRIM_ADDR: ");
1308 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa);
1318 * add an asconf operation for the given ifa and type.
1319 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1320 * returns 0 if completed, -1 if not completed, 1 if immediate send is
1324 sctp_asconf_queue_add(struct sctp_tcb *stcb, struct sctp_ifa *ifa,
1328 int pending_delete_queued = 0;
1330 /* see if peer supports ASCONF */
1331 if (stcb->asoc.asconf_supported == 0) {
1335 * if this is deleting the last address from the assoc, mark it as
1338 if ((type == SCTP_DEL_IP_ADDRESS) && !stcb->asoc.asconf_del_pending &&
1339 (sctp_local_addr_count(stcb) < 2)) {
1340 /* set the pending delete info only */
1341 stcb->asoc.asconf_del_pending = 1;
1342 stcb->asoc.asconf_addr_del_pending = ifa;
1343 atomic_add_int(&ifa->refcount, 1);
1344 SCTPDBG(SCTP_DEBUG_ASCONF2,
1345 "asconf_queue_add: mark delete last address pending\n");
1348 /* queue an asconf parameter */
1349 status = sctp_asconf_queue_mgmt(stcb, ifa, type);
1352 * if this is an add, and there is a delete also pending (i.e. the
1353 * last local address is being changed), queue the pending delete
1356 if ((type == SCTP_ADD_IP_ADDRESS) && stcb->asoc.asconf_del_pending && (status == 0)) {
1357 /* queue in the pending delete */
1358 if (sctp_asconf_queue_mgmt(stcb,
1359 stcb->asoc.asconf_addr_del_pending,
1360 SCTP_DEL_IP_ADDRESS) == 0) {
1361 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_add: queing pending delete\n");
1362 pending_delete_queued = 1;
1363 /* clear out the pending delete info */
1364 stcb->asoc.asconf_del_pending = 0;
1365 sctp_free_ifa(stcb->asoc.asconf_addr_del_pending);
1366 stcb->asoc.asconf_addr_del_pending = NULL;
1369 if (pending_delete_queued) {
1370 struct sctp_nets *net;
1373 * since we know that the only/last address is now being
1374 * changed in this case, reset the cwnd/rto on all nets to
1375 * start as a new address and path. Also clear the error
1376 * counts to give the assoc the best chance to complete the
1379 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1380 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb,
1383 net->error_count = 0;
1385 stcb->asoc.overall_error_count = 0;
1386 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) {
1387 sctp_misc_ints(SCTP_THRESHOLD_CLEAR,
1388 stcb->asoc.overall_error_count,
1390 SCTP_FROM_SCTP_ASCONF,
1393 /* queue in an advisory set primary too */
1394 (void)sctp_asconf_queue_mgmt(stcb, ifa, SCTP_SET_PRIM_ADDR);
1395 /* let caller know we should send this out immediately */
1402 * add an asconf delete IP address parameter to the queue by sockaddr and
1403 * possibly with no sctp_ifa available. This is only called by the routine
1404 * that checks the addresses in an INIT-ACK against the current address list.
1405 * returns 0 if completed, non-zero if not completed.
1406 * NOTE: if an add is already scheduled (and not yet sent out), simply
1407 * remove it from queue. If a duplicate operation is found, ignore the
1411 sctp_asconf_queue_sa_delete(struct sctp_tcb *stcb, struct sockaddr *sa)
1413 struct sctp_ifa *ifa;
1414 struct sctp_asconf_addr *aa, *aa_next;
1419 /* see if peer supports ASCONF */
1420 if (stcb->asoc.asconf_supported == 0) {
1423 /* make sure the request isn't already in the queue */
1424 TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) {
1425 /* address match? */
1426 if (sctp_asconf_addr_match(aa, sa) == 0)
1428 /* is the request already in queue (sent or not) */
1429 if (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) {
1432 /* is the negative request already in queue, and not sent */
1435 if (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS) {
1436 /* add already queued, so remove existing entry */
1437 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1438 sctp_del_local_addr_restricted(stcb, aa->ifa);
1439 /* free the entry */
1440 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1445 /* find any existing ifa-- NOTE ifa CAN be allowed to be NULL */
1446 ifa = sctp_find_ifa_by_addr(sa, stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
1448 /* adding new request to the queue */
1449 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
1452 /* didn't get memory */
1453 SCTPDBG(SCTP_DEBUG_ASCONF1,
1454 "sctp_asconf_queue_sa_delete: failed to get memory!\n");
1457 aa->special_del = 0;
1458 /* fill in asconf address parameter fields */
1459 /* top level elements are "networked" during send */
1460 aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS;
1463 atomic_add_int(&ifa->refcount, 1);
1464 /* correlation_id filled in during send routine later... */
1465 switch (sa->sa_family) {
1470 struct sockaddr_in6 *sin6;
1472 sin6 = (struct sockaddr_in6 *)sa;
1473 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
1474 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param));
1475 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv6addr_param);
1476 memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr,
1477 sizeof(struct in6_addr));
1485 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
1487 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
1488 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param));
1489 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv4addr_param);
1490 memcpy(&aa->ap.addrp.addr, &sin->sin_addr,
1491 sizeof(struct in_addr));
1496 /* invalid family! */
1497 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1502 aa->sent = 0; /* clear sent flag */
1504 /* delete goes to the back of the queue */
1505 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
1507 /* sa_ignore MEMLEAK {memory is put on the tailq} */
1512 * find a specific asconf param on our "sent" queue
1514 static struct sctp_asconf_addr *
1515 sctp_asconf_find_param(struct sctp_tcb *stcb, uint32_t correlation_id)
1517 struct sctp_asconf_addr *aa;
1519 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
1520 if (aa->ap.aph.correlation_id == correlation_id &&
1526 /* didn't find it */
1531 * process an SCTP_ERROR_CAUSE_IND for a ASCONF-ACK parameter and do
1532 * notifications based on the error response
1535 sctp_asconf_process_error(struct sctp_tcb *stcb SCTP_UNUSED,
1536 struct sctp_asconf_paramhdr *aph)
1538 struct sctp_error_cause *eh;
1539 struct sctp_paramhdr *ph;
1540 uint16_t param_type;
1541 uint16_t error_code;
1543 eh = (struct sctp_error_cause *)(aph + 1);
1544 ph = (struct sctp_paramhdr *)(eh + 1);
1545 /* validate lengths */
1546 if (htons(eh->length) + sizeof(struct sctp_error_cause) >
1547 htons(aph->ph.param_length)) {
1548 /* invalid error cause length */
1549 SCTPDBG(SCTP_DEBUG_ASCONF1,
1550 "asconf_process_error: cause element too long\n");
1553 if (htons(ph->param_length) + sizeof(struct sctp_paramhdr) >
1554 htons(eh->length)) {
1555 /* invalid included TLV length */
1556 SCTPDBG(SCTP_DEBUG_ASCONF1,
1557 "asconf_process_error: included TLV too long\n");
1560 /* which error code ? */
1561 error_code = ntohs(eh->code);
1562 param_type = ntohs(aph->ph.param_type);
1563 /* FIX: this should go back up the REMOTE_ERROR ULP notify */
1564 switch (error_code) {
1565 case SCTP_CAUSE_RESOURCE_SHORTAGE:
1566 /* we allow ourselves to "try again" for this error */
1569 /* peer can't handle it... */
1570 switch (param_type) {
1571 case SCTP_ADD_IP_ADDRESS:
1572 case SCTP_DEL_IP_ADDRESS:
1573 case SCTP_SET_PRIM_ADDR:
1582 * process an asconf queue param.
1583 * aparam: parameter to process, will be removed from the queue.
1584 * flag: 1=success case, 0=failure case
1587 sctp_asconf_process_param_ack(struct sctp_tcb *stcb,
1588 struct sctp_asconf_addr *aparam, uint32_t flag)
1590 uint16_t param_type;
1592 /* process this param */
1593 param_type = aparam->ap.aph.ph.param_type;
1594 switch (param_type) {
1595 case SCTP_ADD_IP_ADDRESS:
1596 SCTPDBG(SCTP_DEBUG_ASCONF1,
1597 "process_param_ack: added IP address\n");
1598 sctp_asconf_addr_mgmt_ack(stcb, aparam->ifa, flag);
1600 case SCTP_DEL_IP_ADDRESS:
1601 SCTPDBG(SCTP_DEBUG_ASCONF1,
1602 "process_param_ack: deleted IP address\n");
1603 /* nothing really to do... lists already updated */
1605 case SCTP_SET_PRIM_ADDR:
1606 SCTPDBG(SCTP_DEBUG_ASCONF1,
1607 "process_param_ack: set primary IP address\n");
1608 /* nothing to do... peer may start using this addr */
1611 /* should NEVER happen */
1615 /* remove the param and free it */
1616 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aparam, next);
1618 sctp_free_ifa(aparam->ifa);
1619 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
1623 * cleanup from a bad asconf ack parameter
1626 sctp_asconf_ack_clear(struct sctp_tcb *stcb SCTP_UNUSED)
1628 /* assume peer doesn't really know how to do asconfs */
1629 /* XXX we could free the pending queue here */
1634 sctp_handle_asconf_ack(struct mbuf *m, int offset,
1635 struct sctp_asconf_ack_chunk *cp, struct sctp_tcb *stcb,
1636 struct sctp_nets *net, int *abort_no_unlock)
1638 struct sctp_association *asoc;
1639 uint32_t serial_num;
1640 uint16_t ack_length;
1641 struct sctp_asconf_paramhdr *aph;
1642 struct sctp_asconf_addr *aa, *aa_next;
1643 uint32_t last_error_id = 0; /* last error correlation id */
1645 struct sctp_asconf_addr *ap;
1647 /* asconf param buffer */
1648 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
1650 /* verify minimum length */
1651 if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_ack_chunk)) {
1652 SCTPDBG(SCTP_DEBUG_ASCONF1,
1653 "handle_asconf_ack: chunk too small = %xh\n",
1654 ntohs(cp->ch.chunk_length));
1658 serial_num = ntohl(cp->serial_number);
1661 * NOTE: we may want to handle this differently- currently, we will
1662 * abort when we get an ack for the expected serial number + 1 (eg.
1663 * we didn't send it), process an ack normally if it is the expected
1664 * serial number, and re-send the previous ack for *ALL* other
1669 * if the serial number is the next expected, but I didn't send it,
1670 * abort the asoc, since someone probably just hijacked us...
1672 if (serial_num == (asoc->asconf_seq_out + 1)) {
1673 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got unexpected next serial number! Aborting asoc!\n");
1674 sctp_abort_an_association(stcb->sctp_ep, stcb, NULL, SCTP_SO_NOT_LOCKED);
1675 *abort_no_unlock = 1;
1678 if (serial_num != asoc->asconf_seq_out_acked + 1) {
1679 /* got a duplicate/unexpected ASCONF-ACK */
1680 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got duplicate/unexpected serial number = %xh (expected = %xh)\n",
1681 serial_num, asoc->asconf_seq_out_acked + 1);
1684 if (serial_num == asoc->asconf_seq_out - 1) {
1685 /* stop our timer */
1686 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net,
1687 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_3);
1689 /* process the ASCONF-ACK contents */
1690 ack_length = ntohs(cp->ch.chunk_length) -
1691 sizeof(struct sctp_asconf_ack_chunk);
1692 offset += sizeof(struct sctp_asconf_ack_chunk);
1693 /* process through all parameters */
1694 while (ack_length >= sizeof(struct sctp_asconf_paramhdr)) {
1695 unsigned int param_length, param_type;
1697 /* get pointer to next asconf parameter */
1698 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset,
1699 sizeof(struct sctp_asconf_paramhdr), aparam_buf);
1701 /* can't get an asconf paramhdr */
1702 sctp_asconf_ack_clear(stcb);
1705 param_type = ntohs(aph->ph.param_type);
1706 param_length = ntohs(aph->ph.param_length);
1707 if (param_length > ack_length) {
1708 sctp_asconf_ack_clear(stcb);
1711 if (param_length < sizeof(struct sctp_paramhdr)) {
1712 sctp_asconf_ack_clear(stcb);
1715 /* get the complete parameter... */
1716 if (param_length > sizeof(aparam_buf)) {
1717 SCTPDBG(SCTP_DEBUG_ASCONF1,
1718 "param length (%u) larger than buffer size!\n", param_length);
1719 sctp_asconf_ack_clear(stcb);
1722 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf);
1724 sctp_asconf_ack_clear(stcb);
1727 /* correlation_id is transparent to peer, no ntohl needed */
1728 id = aph->correlation_id;
1730 switch (param_type) {
1731 case SCTP_ERROR_CAUSE_IND:
1733 /* find the corresponding asconf param in our queue */
1734 ap = sctp_asconf_find_param(stcb, id);
1736 /* hmm... can't find this in our queue! */
1739 /* process the parameter, failed flag */
1740 sctp_asconf_process_param_ack(stcb, ap, 0);
1741 /* process the error response */
1742 sctp_asconf_process_error(stcb, aph);
1744 case SCTP_SUCCESS_REPORT:
1745 /* find the corresponding asconf param in our queue */
1746 ap = sctp_asconf_find_param(stcb, id);
1748 /* hmm... can't find this in our queue! */
1751 /* process the parameter, success flag */
1752 sctp_asconf_process_param_ack(stcb, ap, 1);
1758 /* update remaining ASCONF-ACK message length to process */
1759 ack_length -= SCTP_SIZE32(param_length);
1760 if (ack_length <= 0) {
1761 /* no more data in the mbuf chain */
1764 offset += SCTP_SIZE32(param_length);
1768 * if there are any "sent" params still on the queue, these are
1769 * implicitly "success", or "failed" (if we got an error back) ...
1770 * so process these appropriately
1772 * we assume that the correlation_id's are monotonically increasing
1773 * beginning from 1 and that we don't have *that* many outstanding
1776 if (last_error_id == 0)
1777 last_error_id--;/* set to "max" value */
1778 TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) {
1779 if (aa->sent == 1) {
1781 * implicitly successful or failed if correlation_id
1782 * < last_error_id, then success else, failure
1784 if (aa->ap.aph.correlation_id < last_error_id)
1785 sctp_asconf_process_param_ack(stcb, aa, 1);
1787 sctp_asconf_process_param_ack(stcb, aa, 0);
1790 * since we always process in order (FIFO queue) if
1791 * we reach one that hasn't been sent, the rest
1792 * should not have been sent either. so, we're
1799 /* update the next sequence number to use */
1800 asoc->asconf_seq_out_acked++;
1801 /* remove the old ASCONF on our outbound queue */
1802 sctp_toss_old_asconf(stcb);
1803 if (!TAILQ_EMPTY(&stcb->asoc.asconf_queue)) {
1804 #ifdef SCTP_TIMER_BASED_ASCONF
1805 /* we have more params, so restart our timer */
1806 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep,
1809 /* we have more params, so send out more */
1810 sctp_send_asconf(stcb, net, SCTP_ADDR_NOT_LOCKED);
1817 sctp_is_scopeid_in_nets(struct sctp_tcb *stcb, struct sockaddr *sa)
1819 struct sockaddr_in6 *sin6, *net6;
1820 struct sctp_nets *net;
1822 if (sa->sa_family != AF_INET6) {
1826 sin6 = (struct sockaddr_in6 *)sa;
1827 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) == 0) {
1828 /* not link local address */
1831 /* hunt through our destination nets list for this scope_id */
1832 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1833 if (((struct sockaddr *)(&net->ro._l_addr))->sa_family !=
1836 net6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1837 if (IN6_IS_ADDR_LINKLOCAL(&net6->sin6_addr) == 0)
1839 if (sctp_is_same_scope(sin6, net6)) {
1844 /* didn't find one */
1851 * address management functions
1854 sctp_addr_mgmt_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1855 struct sctp_ifa *ifa, uint16_t type, int addr_locked)
1859 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0 ||
1860 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
1861 /* subset bound, no ASCONF allowed case, so ignore */
1865 * note: we know this is not the subset bound, no ASCONF case eg.
1866 * this is boundall or subset bound w/ASCONF allowed
1869 /* first, make sure that the address is IPv4 or IPv6 and not jailed */
1870 switch (ifa->address.sa.sa_family) {
1873 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1874 &ifa->address.sin6.sin6_addr) != 0) {
1881 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1882 &ifa->address.sin.sin_addr) != 0) {
1891 /* make sure we're "allowed" to add this type of addr */
1892 if (ifa->address.sa.sa_family == AF_INET6) {
1893 /* invalid if we're not a v6 endpoint */
1894 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0)
1896 /* is the v6 addr really valid ? */
1897 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
1902 /* put this address on the "pending/do not use yet" list */
1903 sctp_add_local_addr_restricted(stcb, ifa);
1905 * check address scope if address is out of scope, don't queue
1906 * anything... note: this would leave the address on both inp and
1909 switch (ifa->address.sa.sa_family) {
1913 struct sockaddr_in6 *sin6;
1915 sin6 = &ifa->address.sin6;
1916 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1917 /* we skip unspecifed addresses */
1920 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1921 if (stcb->asoc.scope.local_scope == 0) {
1924 /* is it the right link local scope? */
1925 if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) {
1929 if (stcb->asoc.scope.site_scope == 0 &&
1930 IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
1939 struct sockaddr_in *sin;
1940 struct in6pcb *inp6;
1942 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
1943 /* invalid if we are a v6 only endpoint */
1944 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1945 SCTP_IPV6_V6ONLY(inp6))
1948 sin = &ifa->address.sin;
1949 if (sin->sin_addr.s_addr == 0) {
1950 /* we skip unspecifed addresses */
1953 if (stcb->asoc.scope.ipv4_local_scope == 0 &&
1954 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
1961 /* else, not AF_INET or AF_INET6, so skip */
1965 /* queue an asconf for this address add/delete */
1966 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
1967 /* does the peer do asconf? */
1968 if (stcb->asoc.asconf_supported) {
1969 /* queue an asconf for this addr */
1970 status = sctp_asconf_queue_add(stcb, ifa, type);
1973 * if queued ok, and in the open state, send out the
1974 * ASCONF. If in the non-open state, these will be
1975 * sent when the state goes open.
1978 SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) {
1979 #ifdef SCTP_TIMER_BASED_ASCONF
1980 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp,
1981 stcb, stcb->asoc.primary_destination);
1983 sctp_send_asconf(stcb, NULL, addr_locked);
1992 sctp_asconf_iterator_ep(struct sctp_inpcb *inp, void *ptr, uint32_t val SCTP_UNUSED)
1994 struct sctp_asconf_iterator *asc;
1995 struct sctp_ifa *ifa;
1996 struct sctp_laddr *l;
1997 int cnt_invalid = 0;
1999 asc = (struct sctp_asconf_iterator *)ptr;
2000 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2002 switch (ifa->address.sa.sa_family) {
2005 /* invalid if we're not a v6 endpoint */
2006 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
2008 if (asc->cnt == cnt_invalid)
2016 /* invalid if we are a v6 only endpoint */
2017 struct in6pcb *inp6;
2019 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
2020 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2021 SCTP_IPV6_V6ONLY(inp6)) {
2023 if (asc->cnt == cnt_invalid)
2030 /* invalid address family */
2032 if (asc->cnt == cnt_invalid)
2040 sctp_asconf_iterator_ep_end(struct sctp_inpcb *inp, void *ptr, uint32_t val SCTP_UNUSED)
2042 struct sctp_ifa *ifa;
2043 struct sctp_asconf_iterator *asc;
2044 struct sctp_laddr *laddr, *nladdr, *l;
2046 /* Only for specific case not bound all */
2047 asc = (struct sctp_asconf_iterator *)ptr;
2048 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2050 if (l->action == SCTP_ADD_IP_ADDRESS) {
2051 LIST_FOREACH(laddr, &inp->sctp_addr_list,
2053 if (laddr->ifa == ifa) {
2058 } else if (l->action == SCTP_DEL_IP_ADDRESS) {
2059 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
2060 /* remove only after all guys are done */
2061 if (laddr->ifa == ifa) {
2062 sctp_del_local_addr_ep(inp, ifa);
2071 sctp_asconf_iterator_stcb(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2072 void *ptr, uint32_t val SCTP_UNUSED)
2074 struct sctp_asconf_iterator *asc;
2075 struct sctp_ifa *ifa;
2076 struct sctp_laddr *l;
2077 int cnt_invalid = 0;
2081 asc = (struct sctp_asconf_iterator *)ptr;
2082 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2086 /* address's vrf_id must be the vrf_id of the assoc */
2087 if (ifa->vrf_id != stcb->asoc.vrf_id) {
2090 /* Same checks again for assoc */
2091 switch (ifa->address.sa.sa_family) {
2095 /* invalid if we're not a v6 endpoint */
2096 struct sockaddr_in6 *sin6;
2098 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
2100 if (asc->cnt == cnt_invalid)
2105 sin6 = &ifa->address.sin6;
2106 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2107 /* we skip unspecifed addresses */
2110 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
2111 &sin6->sin6_addr) != 0) {
2114 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
2115 if (stcb->asoc.scope.local_scope == 0) {
2118 /* is it the right link local scope? */
2119 if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) {
2129 /* invalid if we are a v6 only endpoint */
2130 struct in6pcb *inp6;
2131 struct sockaddr_in *sin;
2133 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
2134 /* invalid if we are a v6 only endpoint */
2135 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2136 SCTP_IPV6_V6ONLY(inp6))
2139 sin = &ifa->address.sin;
2140 if (sin->sin_addr.s_addr == 0) {
2141 /* we skip unspecifed addresses */
2144 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
2145 &sin->sin_addr) != 0) {
2148 if (stcb->asoc.scope.ipv4_local_scope == 0 &&
2149 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
2152 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2153 SCTP_IPV6_V6ONLY(inp6)) {
2155 if (asc->cnt == cnt_invalid)
2164 /* invalid address family */
2166 if (asc->cnt == cnt_invalid)
2173 if (type == SCTP_ADD_IP_ADDRESS) {
2174 /* prevent this address from being used as a source */
2175 sctp_add_local_addr_restricted(stcb, ifa);
2176 } else if (type == SCTP_DEL_IP_ADDRESS) {
2177 struct sctp_nets *net;
2179 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2182 /* delete this address if cached */
2183 if (net->ro._s_addr == ifa) {
2184 sctp_free_ifa(net->ro._s_addr);
2185 net->ro._s_addr = NULL;
2186 net->src_addr_selected = 0;
2190 net->ro.ro_rt = NULL;
2193 * Now we deleted our src address,
2194 * should we not also now reset the
2195 * cwnd/rto to start as if its a new
2198 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
2203 } else if (type == SCTP_SET_PRIM_ADDR) {
2204 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2205 /* must validate the ifa is in the ep */
2206 if (sctp_is_addr_in_ep(stcb->sctp_ep, ifa) == 0) {
2210 /* Need to check scopes for this guy */
2211 if (sctp_is_address_in_scope(ifa, &stcb->asoc.scope, 0) == 0) {
2216 /* queue an asconf for this address add/delete */
2217 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF) &&
2218 stcb->asoc.asconf_supported == 1) {
2219 /* queue an asconf for this addr */
2220 status = sctp_asconf_queue_add(stcb, ifa, type);
2222 * if queued ok, and in the open state, update the
2223 * count of queued params. If in the non-open
2224 * state, these get sent when the assoc goes open.
2226 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) {
2234 * If we have queued params in the open state, send out an ASCONF.
2236 if (num_queued > 0) {
2237 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2242 sctp_asconf_iterator_end(void *ptr, uint32_t val SCTP_UNUSED)
2244 struct sctp_asconf_iterator *asc;
2245 struct sctp_ifa *ifa;
2246 struct sctp_laddr *l, *nl;
2248 asc = (struct sctp_asconf_iterator *)ptr;
2249 LIST_FOREACH_SAFE(l, &asc->list_of_work, sctp_nxt_addr, nl) {
2251 if (l->action == SCTP_ADD_IP_ADDRESS) {
2252 /* Clear the defer use flag */
2253 ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
2256 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), l);
2257 SCTP_DECR_LADDR_COUNT();
2259 SCTP_FREE(asc, SCTP_M_ASC_IT);
2263 * sa is the sockaddr to ask the peer to set primary to.
2264 * returns: 0 = completed, -1 = error
2267 sctp_set_primary_ip_address_sa(struct sctp_tcb *stcb, struct sockaddr *sa)
2270 struct sctp_ifa *ifa;
2272 /* find the ifa for the desired set primary */
2273 vrf_id = stcb->asoc.vrf_id;
2274 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
2276 /* Invalid address */
2279 /* queue an ASCONF:SET_PRIM_ADDR to be sent */
2280 if (!sctp_asconf_queue_add(stcb, ifa, SCTP_SET_PRIM_ADDR)) {
2281 /* set primary queuing succeeded */
2282 SCTPDBG(SCTP_DEBUG_ASCONF1,
2283 "set_primary_ip_address_sa: queued on tcb=%p, ",
2285 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
2286 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) {
2287 #ifdef SCTP_TIMER_BASED_ASCONF
2288 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2289 stcb->sctp_ep, stcb,
2290 stcb->asoc.primary_destination);
2292 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2296 SCTPDBG(SCTP_DEBUG_ASCONF1, "set_primary_ip_address_sa: failed to add to queue on tcb=%p, ",
2298 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
2305 sctp_set_primary_ip_address(struct sctp_ifa *ifa)
2307 struct sctp_inpcb *inp;
2309 /* go through all our PCB's */
2310 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
2311 struct sctp_tcb *stcb;
2313 /* process for all associations for this endpoint */
2314 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
2315 /* queue an ASCONF:SET_PRIM_ADDR to be sent */
2316 if (!sctp_asconf_queue_add(stcb, ifa,
2317 SCTP_SET_PRIM_ADDR)) {
2318 /* set primary queuing succeeded */
2319 SCTPDBG(SCTP_DEBUG_ASCONF1, "set_primary_ip_address: queued on stcb=%p, ",
2321 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &ifa->address.sa);
2322 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) {
2323 #ifdef SCTP_TIMER_BASED_ASCONF
2324 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2325 stcb->sctp_ep, stcb,
2326 stcb->asoc.primary_destination);
2328 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2332 } /* for each stcb */
2333 } /* for each inp */
2337 sctp_is_addr_pending(struct sctp_tcb *stcb, struct sctp_ifa *sctp_ifa)
2339 struct sctp_tmit_chunk *chk, *nchk;
2340 unsigned int offset, asconf_limit;
2341 struct sctp_asconf_chunk *acp;
2342 struct sctp_asconf_paramhdr *aph;
2343 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
2344 struct sctp_paramhdr *ph;
2345 int add_cnt, del_cnt;
2346 uint16_t last_param_type;
2348 add_cnt = del_cnt = 0;
2349 last_param_type = 0;
2350 TAILQ_FOREACH_SAFE(chk, &stcb->asoc.asconf_send_queue, sctp_next, nchk) {
2351 if (chk->data == NULL) {
2352 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: No mbuf data?\n");
2356 acp = mtod(chk->data, struct sctp_asconf_chunk *);
2357 offset += sizeof(struct sctp_asconf_chunk);
2358 asconf_limit = ntohs(acp->ch.chunk_length);
2359 ph = (struct sctp_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_paramhdr), aparam_buf);
2361 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get lookup addr!\n");
2364 offset += ntohs(ph->param_length);
2366 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf);
2368 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: Empty ASCONF will be sent?\n");
2371 while (aph != NULL) {
2372 unsigned int param_length, param_type;
2374 param_type = ntohs(aph->ph.param_type);
2375 param_length = ntohs(aph->ph.param_length);
2376 if (offset + param_length > asconf_limit) {
2377 /* parameter goes beyond end of chunk! */
2380 if (param_length > sizeof(aparam_buf)) {
2381 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length (%u) larger than buffer size!\n", param_length);
2384 if (param_length <= sizeof(struct sctp_paramhdr)) {
2385 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length(%u) too short\n", param_length);
2388 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, param_length, aparam_buf);
2390 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get entire param\n");
2393 ph = (struct sctp_paramhdr *)(aph + 1);
2394 if (sctp_addr_match(ph, &sctp_ifa->address.sa) != 0) {
2395 switch (param_type) {
2396 case SCTP_ADD_IP_ADDRESS:
2399 case SCTP_DEL_IP_ADDRESS:
2405 last_param_type = param_type;
2407 offset += SCTP_SIZE32(param_length);
2408 if (offset >= asconf_limit) {
2409 /* no more data in the mbuf chain */
2412 /* get pointer to next asconf param */
2413 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf);
2418 * we want to find the sequences which consist of ADD -> DEL -> ADD
2421 if (add_cnt > del_cnt ||
2422 (add_cnt == del_cnt && last_param_type == SCTP_ADD_IP_ADDRESS)) {
2428 static struct sockaddr *
2429 sctp_find_valid_localaddr(struct sctp_tcb *stcb, int addr_locked)
2431 struct sctp_vrf *vrf = NULL;
2432 struct sctp_ifn *sctp_ifn;
2433 struct sctp_ifa *sctp_ifa;
2435 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2436 SCTP_IPI_ADDR_RLOCK();
2437 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
2439 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2440 SCTP_IPI_ADDR_RUNLOCK();
2443 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
2444 if (stcb->asoc.scope.loopback_scope == 0 &&
2445 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
2446 /* Skip if loopback_scope not set */
2449 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
2450 switch (sctp_ifa->address.sa.sa_family) {
2453 if (stcb->asoc.scope.ipv4_addr_legal) {
2454 struct sockaddr_in *sin;
2456 sin = &sctp_ifa->address.sin;
2457 if (sin->sin_addr.s_addr == 0) {
2458 /* skip unspecifed addresses */
2461 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
2462 &sin->sin_addr) != 0) {
2465 if (stcb->asoc.scope.ipv4_local_scope == 0 &&
2466 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))
2469 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
2470 (!sctp_is_addr_pending(stcb, sctp_ifa)))
2473 * found a valid local v4 address to
2476 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2477 SCTP_IPI_ADDR_RUNLOCK();
2478 return (&sctp_ifa->address.sa);
2484 if (stcb->asoc.scope.ipv6_addr_legal) {
2485 struct sockaddr_in6 *sin6;
2487 if (sctp_ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
2490 sin6 = &sctp_ifa->address.sin6;
2491 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2493 * we skip unspecifed
2498 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
2499 &sin6->sin6_addr) != 0) {
2502 if (stcb->asoc.scope.local_scope == 0 &&
2503 IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
2505 if (stcb->asoc.scope.site_scope == 0 &&
2506 IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))
2509 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
2510 (!sctp_is_addr_pending(stcb, sctp_ifa)))
2513 * found a valid local v6 address to
2516 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2517 SCTP_IPI_ADDR_RUNLOCK();
2518 return (&sctp_ifa->address.sa);
2527 /* no valid addresses found */
2528 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2529 SCTP_IPI_ADDR_RUNLOCK();
2533 static struct sockaddr *
2534 sctp_find_valid_localaddr_ep(struct sctp_tcb *stcb)
2536 struct sctp_laddr *laddr;
2538 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
2539 if (laddr->ifa == NULL) {
2542 /* is the address restricted ? */
2543 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
2544 (!sctp_is_addr_pending(stcb, laddr->ifa)))
2547 /* found a valid local address to use */
2548 return (&laddr->ifa->address.sa);
2550 /* no valid addresses found */
2555 * builds an ASCONF chunk from queued ASCONF params.
2556 * returns NULL on error (no mbuf, no ASCONF params queued, etc).
2559 sctp_compose_asconf(struct sctp_tcb *stcb, int *retlen, int addr_locked)
2561 struct mbuf *m_asconf, *m_asconf_chk;
2562 struct sctp_asconf_addr *aa;
2563 struct sctp_asconf_chunk *acp;
2564 struct sctp_asconf_paramhdr *aph;
2565 struct sctp_asconf_addr_param *aap;
2567 uint32_t correlation_id = 1; /* 0 is reserved... */
2568 caddr_t ptr, lookup_ptr;
2569 uint8_t lookup_used = 0;
2571 /* are there any asconf params to send? */
2572 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
2580 * get a chunk header mbuf and a cluster for the asconf params since
2581 * it's simpler to fill in the asconf chunk header lookup address on
2584 m_asconf_chk = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_chunk), 0, M_NOWAIT, 1, MT_DATA);
2585 if (m_asconf_chk == NULL) {
2587 SCTPDBG(SCTP_DEBUG_ASCONF1,
2588 "compose_asconf: couldn't get chunk mbuf!\n");
2591 m_asconf = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
2592 if (m_asconf == NULL) {
2594 SCTPDBG(SCTP_DEBUG_ASCONF1,
2595 "compose_asconf: couldn't get mbuf!\n");
2596 sctp_m_freem(m_asconf_chk);
2599 SCTP_BUF_LEN(m_asconf_chk) = sizeof(struct sctp_asconf_chunk);
2600 SCTP_BUF_LEN(m_asconf) = 0;
2601 acp = mtod(m_asconf_chk, struct sctp_asconf_chunk *);
2602 bzero(acp, sizeof(struct sctp_asconf_chunk));
2603 /* save pointers to lookup address and asconf params */
2604 lookup_ptr = (caddr_t)(acp + 1); /* after the header */
2605 ptr = mtod(m_asconf, caddr_t); /* beginning of cluster */
2607 /* fill in chunk header info */
2608 acp->ch.chunk_type = SCTP_ASCONF;
2609 acp->ch.chunk_flags = 0;
2610 acp->serial_number = htonl(stcb->asoc.asconf_seq_out);
2611 stcb->asoc.asconf_seq_out++;
2613 /* add parameters... up to smallest MTU allowed */
2614 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
2617 /* get the parameter length */
2618 p_length = SCTP_SIZE32(aa->ap.aph.ph.param_length);
2619 /* will it fit in current chunk? */
2620 if ((SCTP_BUF_LEN(m_asconf) + p_length > stcb->asoc.smallest_mtu) ||
2621 (SCTP_BUF_LEN(m_asconf) + p_length > MCLBYTES)) {
2622 /* won't fit, so we're done with this chunk */
2625 /* assign (and store) a correlation id */
2626 aa->ap.aph.correlation_id = correlation_id++;
2629 * fill in address if we're doing a delete this is a simple
2630 * way for us to fill in the correlation address, which
2631 * should only be used by the peer if we're deleting our
2632 * source address and adding a new address (e.g. renumbering
2635 if (lookup_used == 0 &&
2636 (aa->special_del == 0) &&
2637 aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) {
2638 struct sctp_ipv6addr_param *lookup;
2639 uint16_t p_size, addr_size;
2641 lookup = (struct sctp_ipv6addr_param *)lookup_ptr;
2642 lookup->ph.param_type =
2643 htons(aa->ap.addrp.ph.param_type);
2644 if (aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) {
2645 /* copy IPv6 address */
2646 p_size = sizeof(struct sctp_ipv6addr_param);
2647 addr_size = sizeof(struct in6_addr);
2649 /* copy IPv4 address */
2650 p_size = sizeof(struct sctp_ipv4addr_param);
2651 addr_size = sizeof(struct in_addr);
2653 lookup->ph.param_length = htons(SCTP_SIZE32(p_size));
2654 memcpy(lookup->addr, &aa->ap.addrp.addr, addr_size);
2655 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size);
2658 /* copy into current space */
2659 memcpy(ptr, &aa->ap, p_length);
2661 /* network elements and update lengths */
2662 aph = (struct sctp_asconf_paramhdr *)ptr;
2663 aap = (struct sctp_asconf_addr_param *)ptr;
2664 /* correlation_id is transparent to peer, no htonl needed */
2665 aph->ph.param_type = htons(aph->ph.param_type);
2666 aph->ph.param_length = htons(aph->ph.param_length);
2667 aap->addrp.ph.param_type = htons(aap->addrp.ph.param_type);
2668 aap->addrp.ph.param_length = htons(aap->addrp.ph.param_length);
2670 SCTP_BUF_LEN(m_asconf) += SCTP_SIZE32(p_length);
2671 ptr += SCTP_SIZE32(p_length);
2674 * these params are removed off the pending list upon
2675 * getting an ASCONF-ACK back from the peer, just set flag
2679 /* check to see if the lookup addr has been populated yet */
2680 if (lookup_used == 0) {
2681 /* NOTE: if the address param is optional, can skip this... */
2682 /* add any valid (existing) address... */
2683 struct sctp_ipv6addr_param *lookup;
2684 uint16_t p_size, addr_size;
2685 struct sockaddr *found_addr;
2688 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)
2689 found_addr = sctp_find_valid_localaddr(stcb,
2692 found_addr = sctp_find_valid_localaddr_ep(stcb);
2694 lookup = (struct sctp_ipv6addr_param *)lookup_ptr;
2695 if (found_addr != NULL) {
2696 switch (found_addr->sa_family) {
2699 /* copy IPv6 address */
2700 lookup->ph.param_type =
2701 htons(SCTP_IPV6_ADDRESS);
2702 p_size = sizeof(struct sctp_ipv6addr_param);
2703 addr_size = sizeof(struct in6_addr);
2704 addr_ptr = (caddr_t)&((struct sockaddr_in6 *)
2705 found_addr)->sin6_addr;
2710 /* copy IPv4 address */
2711 lookup->ph.param_type =
2712 htons(SCTP_IPV4_ADDRESS);
2713 p_size = sizeof(struct sctp_ipv4addr_param);
2714 addr_size = sizeof(struct in_addr);
2715 addr_ptr = (caddr_t)&((struct sockaddr_in *)
2716 found_addr)->sin_addr;
2725 lookup->ph.param_length = htons(SCTP_SIZE32(p_size));
2726 memcpy(lookup->addr, addr_ptr, addr_size);
2727 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size);
2729 /* uh oh... don't have any address?? */
2730 SCTPDBG(SCTP_DEBUG_ASCONF1,
2731 "compose_asconf: no lookup addr!\n");
2732 /* XXX for now, we send a IPv4 address of 0.0.0.0 */
2733 lookup->ph.param_type = htons(SCTP_IPV4_ADDRESS);
2734 lookup->ph.param_length = htons(SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param)));
2735 bzero(lookup->addr, sizeof(struct in_addr));
2736 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param));
2739 /* chain it all together */
2740 SCTP_BUF_NEXT(m_asconf_chk) = m_asconf;
2741 *retlen = SCTP_BUF_LEN(m_asconf_chk) + SCTP_BUF_LEN(m_asconf);
2742 acp->ch.chunk_length = htons(*retlen);
2744 return (m_asconf_chk);
2748 * section to handle address changes before an association is up eg. changes
2749 * during INIT/INIT-ACK/COOKIE-ECHO handshake
2753 * processes the (local) addresses in the INIT-ACK chunk
2756 sctp_process_initack_addresses(struct sctp_tcb *stcb, struct mbuf *m,
2757 unsigned int offset, unsigned int length)
2759 struct sctp_paramhdr tmp_param, *ph;
2760 uint16_t plen, ptype;
2761 struct sctp_ifa *sctp_ifa;
2762 union sctp_sockstore store;
2765 struct sctp_ipv6addr_param addr6_store;
2769 struct sctp_ipv4addr_param addr4_store;
2773 SCTPDBG(SCTP_DEBUG_ASCONF2, "processing init-ack addresses\n");
2774 if (stcb == NULL) /* Un-needed check for SA */
2777 /* convert to upper bound */
2780 if ((offset + sizeof(struct sctp_paramhdr)) > length) {
2783 /* go through the addresses in the init-ack */
2784 ph = (struct sctp_paramhdr *)
2785 sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr),
2786 (uint8_t *) & tmp_param);
2787 while (ph != NULL) {
2788 ptype = ntohs(ph->param_type);
2789 plen = ntohs(ph->param_length);
2792 case SCTP_IPV6_ADDRESS:
2794 struct sctp_ipv6addr_param *a6p;
2796 /* get the entire IPv6 address param */
2797 a6p = (struct sctp_ipv6addr_param *)
2798 sctp_m_getptr(m, offset,
2799 sizeof(struct sctp_ipv6addr_param),
2800 (uint8_t *) & addr6_store);
2801 if (plen != sizeof(struct sctp_ipv6addr_param) ||
2805 memset(&store, 0, sizeof(union sctp_sockstore));
2806 store.sin6.sin6_family = AF_INET6;
2807 store.sin6.sin6_len = sizeof(struct sockaddr_in6);
2808 store.sin6.sin6_port = stcb->rport;
2809 memcpy(&store.sin6.sin6_addr, a6p->addr, sizeof(struct in6_addr));
2814 case SCTP_IPV4_ADDRESS:
2816 struct sctp_ipv4addr_param *a4p;
2818 /* get the entire IPv4 address param */
2819 a4p = (struct sctp_ipv4addr_param *)sctp_m_getptr(m, offset,
2820 sizeof(struct sctp_ipv4addr_param),
2821 (uint8_t *) & addr4_store);
2822 if (plen != sizeof(struct sctp_ipv4addr_param) ||
2826 memset(&store, 0, sizeof(union sctp_sockstore));
2827 store.sin.sin_family = AF_INET;
2828 store.sin.sin_len = sizeof(struct sockaddr_in);
2829 store.sin.sin_port = stcb->rport;
2830 store.sin.sin_addr.s_addr = a4p->addr;
2838 /* see if this address really (still) exists */
2839 sctp_ifa = sctp_find_ifa_by_addr(&store.sa, stcb->asoc.vrf_id,
2840 SCTP_ADDR_NOT_LOCKED);
2841 if (sctp_ifa == NULL) {
2842 /* address doesn't exist anymore */
2845 /* are ASCONFs allowed ? */
2846 if ((sctp_is_feature_on(stcb->sctp_ep,
2847 SCTP_PCB_FLAGS_DO_ASCONF)) &&
2848 stcb->asoc.asconf_supported) {
2849 /* queue an ASCONF DEL_IP_ADDRESS */
2850 status = sctp_asconf_queue_sa_delete(stcb, &store.sa);
2852 * if queued ok, and in correct state, send
2856 SCTP_GET_STATE(&stcb->asoc) ==
2858 #ifdef SCTP_TIMER_BASED_ASCONF
2859 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2860 stcb->sctp_ep, stcb,
2861 stcb->asoc.primary_destination);
2863 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2870 * Sanity check: Make sure the length isn't 0, otherwise
2871 * we'll be stuck in this loop for a long time...
2873 if (SCTP_SIZE32(plen) == 0) {
2874 SCTP_PRINTF("process_initack_addrs: bad len (%d) type=%xh\n",
2878 /* get next parameter */
2879 offset += SCTP_SIZE32(plen);
2880 if ((offset + sizeof(struct sctp_paramhdr)) > length)
2882 ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset,
2883 sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param);
2887 /* FIX ME: need to verify return result for v6 address type if v6 disabled */
2889 * checks to see if a specific address is in the initack address list returns
2890 * 1 if found, 0 if not
2893 sctp_addr_in_initack(struct mbuf *m, uint32_t offset, uint32_t length, struct sockaddr *sa)
2895 struct sctp_paramhdr tmp_param, *ph;
2896 uint16_t plen, ptype;
2899 struct sockaddr_in *sin;
2900 struct sctp_ipv4addr_param *a4p;
2901 struct sctp_ipv6addr_param addr4_store;
2905 struct sockaddr_in6 *sin6;
2906 struct sctp_ipv6addr_param *a6p;
2907 struct sctp_ipv6addr_param addr6_store;
2908 struct sockaddr_in6 sin6_tmp;
2912 switch (sa->sa_family) {
2925 SCTPDBG(SCTP_DEBUG_ASCONF2, "find_initack_addr: starting search for ");
2926 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, sa);
2927 /* convert to upper bound */
2930 if ((offset + sizeof(struct sctp_paramhdr)) > length) {
2931 SCTPDBG(SCTP_DEBUG_ASCONF1,
2932 "find_initack_addr: invalid offset?\n");
2935 /* go through the addresses in the init-ack */
2936 ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset,
2937 sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param);
2938 while (ph != NULL) {
2939 ptype = ntohs(ph->param_type);
2940 plen = ntohs(ph->param_length);
2943 case SCTP_IPV6_ADDRESS:
2944 if (sa->sa_family == AF_INET6) {
2945 /* get the entire IPv6 address param */
2946 if (plen != sizeof(struct sctp_ipv6addr_param)) {
2949 /* get the entire IPv6 address param */
2950 a6p = (struct sctp_ipv6addr_param *)
2951 sctp_m_getptr(m, offset,
2952 sizeof(struct sctp_ipv6addr_param),
2953 (uint8_t *) & addr6_store);
2957 sin6 = (struct sockaddr_in6 *)sa;
2958 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2959 /* create a copy and clear scope */
2960 memcpy(&sin6_tmp, sin6,
2961 sizeof(struct sockaddr_in6));
2963 in6_clearscope(&sin6->sin6_addr);
2965 if (memcmp(&sin6->sin6_addr, a6p->addr,
2966 sizeof(struct in6_addr)) == 0) {
2974 case SCTP_IPV4_ADDRESS:
2975 if (sa->sa_family == AF_INET) {
2976 if (plen != sizeof(struct sctp_ipv4addr_param)) {
2979 /* get the entire IPv4 address param */
2980 a4p = (struct sctp_ipv4addr_param *)
2981 sctp_m_getptr(m, offset,
2982 sizeof(struct sctp_ipv4addr_param),
2983 (uint8_t *) & addr4_store);
2987 sin = (struct sockaddr_in *)sa;
2988 if (sin->sin_addr.s_addr == a4p->addr) {
2998 /* get next parameter */
2999 offset += SCTP_SIZE32(plen);
3000 if (offset + sizeof(struct sctp_paramhdr) > length) {
3003 ph = (struct sctp_paramhdr *)
3004 sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr),
3005 (uint8_t *) & tmp_param);
3012 * makes sure that the current endpoint local addr list is consistent with
3013 * the new association (eg. subset bound, asconf allowed) adds addresses as
3017 sctp_check_address_list_ep(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3018 int length, struct sockaddr *init_addr)
3020 struct sctp_laddr *laddr;
3022 /* go through the endpoint list */
3023 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
3024 /* be paranoid and validate the laddr */
3025 if (laddr->ifa == NULL) {
3026 SCTPDBG(SCTP_DEBUG_ASCONF1,
3027 "check_addr_list_ep: laddr->ifa is NULL");
3030 if (laddr->ifa == NULL) {
3031 SCTPDBG(SCTP_DEBUG_ASCONF1, "check_addr_list_ep: laddr->ifa->ifa_addr is NULL");
3034 /* do i have it implicitly? */
3035 if (sctp_cmpaddr(&laddr->ifa->address.sa, init_addr)) {
3038 /* check to see if in the init-ack */
3039 if (!sctp_addr_in_initack(m, offset, length, &laddr->ifa->address.sa)) {
3041 sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb, laddr->ifa,
3042 SCTP_ADD_IP_ADDRESS, SCTP_ADDR_NOT_LOCKED);
3048 * makes sure that the current kernel address list is consistent with the new
3049 * association (with all addrs bound) adds addresses as necessary
3052 sctp_check_address_list_all(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3053 int length, struct sockaddr *init_addr,
3054 uint16_t local_scope, uint16_t site_scope,
3055 uint16_t ipv4_scope, uint16_t loopback_scope)
3057 struct sctp_vrf *vrf = NULL;
3058 struct sctp_ifn *sctp_ifn;
3059 struct sctp_ifa *sctp_ifa;
3063 struct sockaddr_in *sin;
3067 struct sockaddr_in6 *sin6;
3072 vrf_id = stcb->asoc.vrf_id;
3076 SCTP_IPI_ADDR_RLOCK();
3077 vrf = sctp_find_vrf(vrf_id);
3079 SCTP_IPI_ADDR_RUNLOCK();
3082 /* go through all our known interfaces */
3083 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
3084 if (loopback_scope == 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
3085 /* skip loopback interface */
3088 /* go through each interface address */
3089 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
3090 /* do i have it implicitly? */
3091 if (sctp_cmpaddr(&sctp_ifa->address.sa, init_addr)) {
3094 switch (sctp_ifa->address.sa.sa_family) {
3097 sin = &sctp_ifa->address.sin;
3098 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
3099 &sin->sin_addr) != 0) {
3102 if ((ipv4_scope == 0) &&
3103 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
3104 /* private address not in scope */
3111 sin6 = &sctp_ifa->address.sin6;
3112 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
3113 &sin6->sin6_addr) != 0) {
3116 if ((local_scope == 0) &&
3117 (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))) {
3120 if ((site_scope == 0) &&
3121 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
3129 /* check to see if in the init-ack */
3130 if (!sctp_addr_in_initack(m, offset, length, &sctp_ifa->address.sa)) {
3132 sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb,
3133 sctp_ifa, SCTP_ADD_IP_ADDRESS,
3136 } /* end foreach ifa */
3137 } /* end foreach ifn */
3138 SCTP_IPI_ADDR_RUNLOCK();
3142 * validates an init-ack chunk (from a cookie-echo) with current addresses
3143 * adds addresses from the init-ack into our local address list, if needed
3144 * queues asconf adds/deletes addresses as needed and makes appropriate list
3145 * changes for source address selection m, offset: points to the start of the
3146 * address list in an init-ack chunk length: total length of the address
3147 * params only init_addr: address where my INIT-ACK was sent from
3150 sctp_check_address_list(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3151 int length, struct sockaddr *init_addr,
3152 uint16_t local_scope, uint16_t site_scope,
3153 uint16_t ipv4_scope, uint16_t loopback_scope)
3155 /* process the local addresses in the initack */
3156 sctp_process_initack_addresses(stcb, m, offset, length);
3158 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3159 /* bound all case */
3160 sctp_check_address_list_all(stcb, m, offset, length, init_addr,
3161 local_scope, site_scope, ipv4_scope, loopback_scope);
3163 /* subset bound case */
3164 if (sctp_is_feature_on(stcb->sctp_ep,
3165 SCTP_PCB_FLAGS_DO_ASCONF)) {
3166 /* asconf's allowed */
3167 sctp_check_address_list_ep(stcb, m, offset, length,
3170 /* else, no asconfs allowed, so what we sent is what we get */
3175 * sctp_bindx() support
3178 sctp_addr_mgmt_ep_sa(struct sctp_inpcb *inp, struct sockaddr *sa,
3179 uint32_t type, uint32_t vrf_id, struct sctp_ifa *sctp_ifap)
3181 struct sctp_ifa *ifa;
3182 struct sctp_laddr *laddr, *nladdr;
3184 if (sa->sa_len == 0) {
3185 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL);
3190 } else if (type == SCTP_ADD_IP_ADDRESS) {
3191 /* For an add the address MUST be on the system */
3192 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
3193 } else if (type == SCTP_DEL_IP_ADDRESS) {
3194 /* For a delete we need to find it in the inp */
3195 ifa = sctp_find_ifa_in_ep(inp, sa, SCTP_ADDR_NOT_LOCKED);
3200 if (type == SCTP_ADD_IP_ADDRESS) {
3201 sctp_add_local_addr_ep(inp, ifa, type);
3202 } else if (type == SCTP_DEL_IP_ADDRESS) {
3203 if (inp->laddr_count < 2) {
3204 /* can't delete the last local address */
3205 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL);
3208 LIST_FOREACH(laddr, &inp->sctp_addr_list,
3210 if (ifa == laddr->ifa) {
3211 /* Mark in the delete */
3212 laddr->action = type;
3216 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
3218 * There is no need to start the iterator if the inp
3219 * has no associations.
3221 if (type == SCTP_DEL_IP_ADDRESS) {
3222 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3223 if (laddr->ifa == ifa) {
3224 sctp_del_local_addr_ep(inp, ifa);
3229 struct sctp_asconf_iterator *asc;
3230 struct sctp_laddr *wi;
3232 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
3233 sizeof(struct sctp_asconf_iterator),
3236 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM);
3239 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
3241 SCTP_FREE(asc, SCTP_M_ASC_IT);
3242 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM);
3245 LIST_INIT(&asc->list_of_work);
3247 SCTP_INCR_LADDR_COUNT();
3250 atomic_add_int(&ifa->refcount, 1);
3251 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
3252 (void)sctp_initiate_iterator(sctp_asconf_iterator_ep,
3253 sctp_asconf_iterator_stcb,
3254 sctp_asconf_iterator_ep_end,
3256 SCTP_PCB_ANY_FEATURES,
3257 SCTP_ASOC_ANY_STATE,
3259 sctp_asconf_iterator_end, inp, 0);
3263 /* invalid address! */
3264 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EADDRNOTAVAIL);
3265 return (EADDRNOTAVAIL);
3270 sctp_asconf_send_nat_state_update(struct sctp_tcb *stcb,
3271 struct sctp_nets *net)
3273 struct sctp_asconf_addr *aa;
3274 struct sctp_ifa *sctp_ifap;
3275 struct sctp_asconf_tag_param *vtag;
3278 struct sockaddr_in *to;
3282 struct sockaddr_in6 *to6;
3286 SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing net\n");
3290 SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing stcb\n");
3294 * Need to have in the asconf: - vtagparam(my_vtag/peer_vtag) -
3295 * add(0.0.0.0) - del(0.0.0.0) - Any global addresses add(addr)
3297 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3300 /* didn't get memory */
3301 SCTPDBG(SCTP_DEBUG_ASCONF1,
3302 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3305 aa->special_del = 0;
3306 /* fill in asconf address parameter fields */
3307 /* top level elements are "networked" during send */
3309 aa->sent = 0; /* clear sent flag */
3310 vtag = (struct sctp_asconf_tag_param *)&aa->ap.aph;
3311 vtag->aph.ph.param_type = SCTP_NAT_VTAGS;
3312 vtag->aph.ph.param_length = sizeof(struct sctp_asconf_tag_param);
3313 vtag->local_vtag = htonl(stcb->asoc.my_vtag);
3314 vtag->remote_vtag = htonl(stcb->asoc.peer_vtag);
3315 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3317 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3320 /* didn't get memory */
3321 SCTPDBG(SCTP_DEBUG_ASCONF1,
3322 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3325 memset(aa, 0, sizeof(struct sctp_asconf_addr));
3326 /* fill in asconf address parameter fields */
3328 switch (net->ro._l_addr.sa.sa_family) {
3331 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3332 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param);
3333 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
3334 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_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);
3341 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3342 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param);
3343 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
3344 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param);
3345 /* No need to add an address, we are using 0.0.0.0 */
3346 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3350 SCTPDBG(SCTP_DEBUG_ASCONF1,
3351 "sctp_asconf_send_nat_state_update: unknown address family\n");
3352 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
3355 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3358 /* didn't get memory */
3359 SCTPDBG(SCTP_DEBUG_ASCONF1,
3360 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3363 memset(aa, 0, sizeof(struct sctp_asconf_addr));
3364 /* fill in asconf address parameter fields */
3366 switch (net->ro._l_addr.sa.sa_family) {
3369 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3370 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param);
3371 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
3372 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_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);
3379 aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS;
3380 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param);
3381 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
3382 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param);
3383 /* No need to add an address, we are using 0.0.0.0 */
3384 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3388 SCTPDBG(SCTP_DEBUG_ASCONF1,
3389 "sctp_asconf_send_nat_state_update: unknown address family\n");
3390 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
3393 /* Now we must hunt the addresses and add all global addresses */
3394 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3395 struct sctp_vrf *vrf = NULL;
3396 struct sctp_ifn *sctp_ifnp;
3399 vrf_id = stcb->sctp_ep->def_vrf_id;
3400 vrf = sctp_find_vrf(vrf_id);
3404 SCTP_IPI_ADDR_RLOCK();
3405 LIST_FOREACH(sctp_ifnp, &vrf->ifnlist, next_ifn) {
3406 LIST_FOREACH(sctp_ifap, &sctp_ifnp->ifalist, next_ifa) {
3407 switch (sctp_ifap->address.sa.sa_family) {
3410 to = &sctp_ifap->address.sin;
3411 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
3412 &to->sin_addr) != 0) {
3415 if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) {
3418 if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) {
3425 to6 = &sctp_ifap->address.sin6;
3426 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
3427 &to6->sin6_addr) != 0) {
3430 if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) {
3433 if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) {
3441 sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS);
3444 SCTP_IPI_ADDR_RUNLOCK();
3446 struct sctp_laddr *laddr;
3448 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
3449 if (laddr->ifa == NULL) {
3452 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED)
3454 * Address being deleted by the system, dont
3458 if (laddr->action == SCTP_DEL_IP_ADDRESS) {
3460 * Address being deleted on this ep don't
3465 sctp_ifap = laddr->ifa;
3466 switch (sctp_ifap->address.sa.sa_family) {
3469 to = &sctp_ifap->address.sin;
3470 if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) {
3473 if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) {
3480 to6 = &sctp_ifap->address.sin6;
3481 if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) {
3484 if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) {
3492 sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS);
3496 /* Now we must send the asconf into the queue */
3497 sctp_send_asconf(stcb, net, SCTP_ADDR_NOT_LOCKED);