2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <netinet/sctp_os.h>
39 #include <netinet/sctp_var.h>
40 #include <netinet/sctp_sysctl.h>
41 #include <netinet/sctp_pcb.h>
42 #include <netinet/sctp_header.h>
43 #include <netinet/sctputil.h>
44 #include <netinet/sctp_output.h>
45 #include <netinet/sctp_asconf.h>
46 #include <netinet/sctp_timer.h>
50 * SCTP_DEBUG_ASCONF1: protocol info, general info and errors
51 * SCTP_DEBUG_ASCONF2: detailed info
58 * An ASCONF parameter queue exists per asoc which holds the pending address
59 * operations. Lists are updated upon receipt of ASCONF-ACK.
61 * A restricted_addrs list exists per assoc to hold local addresses that are
62 * not (yet) usable by the assoc as a source address. These addresses are
63 * either pending an ASCONF operation (and exist on the ASCONF parameter
64 * queue), or they are permanently restricted (the peer has returned an
65 * ERROR indication to an ASCONF(ADD), or the peer does not support ASCONF).
67 * Deleted addresses are always immediately removed from the lists as they will
68 * (shortly) no longer exist in the kernel. We send ASCONFs as a courtesy,
73 * ASCONF parameter processing.
74 * response_required: set if a reply is required (eg. SUCCESS_REPORT).
75 * returns a mbuf to an "error" response parameter or NULL/"success" if ok.
76 * FIX: allocating this many mbufs on the fly is pretty inefficient...
79 sctp_asconf_success_response(uint32_t id)
81 struct mbuf *m_reply = NULL;
82 struct sctp_asconf_paramhdr *aph;
84 m_reply = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_paramhdr),
85 0, M_NOWAIT, 1, MT_DATA);
86 if (m_reply == NULL) {
87 SCTPDBG(SCTP_DEBUG_ASCONF1,
88 "asconf_success_response: couldn't get mbuf!\n");
91 aph = mtod(m_reply, struct sctp_asconf_paramhdr *);
92 aph->correlation_id = id;
93 aph->ph.param_type = htons(SCTP_SUCCESS_REPORT);
94 aph->ph.param_length = sizeof(struct sctp_asconf_paramhdr);
95 SCTP_BUF_LEN(m_reply) = aph->ph.param_length;
96 aph->ph.param_length = htons(aph->ph.param_length);
102 sctp_asconf_error_response(uint32_t id, uint16_t cause, uint8_t *error_tlv,
105 struct mbuf *m_reply = NULL;
106 struct sctp_asconf_paramhdr *aph;
107 struct sctp_error_cause *error;
109 uint16_t i, param_length, cause_length, padding_length;
112 if (error_tlv == NULL) {
115 cause_length = sizeof(struct sctp_error_cause) + tlv_length;
116 param_length = sizeof(struct sctp_asconf_paramhdr) + cause_length;
117 padding_length = tlv_length % 4;
118 if (padding_length != 0) {
119 padding_length = 4 - padding_length;
121 buf_len = param_length + padding_length;
122 if (buf_len > MLEN) {
123 SCTPDBG(SCTP_DEBUG_ASCONF1,
124 "asconf_error_response: tlv_length (%xh) too big\n",
128 m_reply = sctp_get_mbuf_for_msg(buf_len, 0, M_NOWAIT, 1, MT_DATA);
129 if (m_reply == NULL) {
130 SCTPDBG(SCTP_DEBUG_ASCONF1,
131 "asconf_error_response: couldn't get mbuf!\n");
134 aph = mtod(m_reply, struct sctp_asconf_paramhdr *);
135 aph->ph.param_type = htons(SCTP_ERROR_CAUSE_IND);
136 aph->ph.param_length = htons(param_length);
137 aph->correlation_id = id;
138 error = (struct sctp_error_cause *)(aph + 1);
139 error->code = htons(cause);
140 error->length = htons(cause_length);
141 if (error_tlv != NULL) {
142 tlv = (uint8_t *)(error + 1);
143 memcpy(tlv, error_tlv, tlv_length);
144 for (i = 0; i < padding_length; i++) {
145 tlv[tlv_length + i] = 0;
148 SCTP_BUF_LEN(m_reply) = buf_len;
153 sctp_process_asconf_add_ip(struct sockaddr *src, struct sctp_asconf_paramhdr *aph,
154 struct sctp_tcb *stcb, int send_hb, int response_required)
156 struct sctp_nets *net;
157 struct mbuf *m_reply = NULL;
158 union sctp_sockstore store;
159 struct sctp_paramhdr *ph;
160 uint16_t param_type, aparam_length;
161 #if defined(INET) || defined(INET6)
162 uint16_t param_length;
165 int zero_address = 0;
168 struct sockaddr_in *sin;
169 struct sctp_ipv4addr_param *v4addr;
172 struct sockaddr_in6 *sin6;
173 struct sctp_ipv6addr_param *v6addr;
176 aparam_length = ntohs(aph->ph.param_length);
177 if (aparam_length < sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_paramhdr)) {
180 ph = (struct sctp_paramhdr *)(aph + 1);
181 param_type = ntohs(ph->param_type);
182 #if defined(INET) || defined(INET6)
183 param_length = ntohs(ph->param_length);
184 if (param_length + sizeof(struct sctp_asconf_paramhdr) != aparam_length) {
189 switch (param_type) {
191 case SCTP_IPV4_ADDRESS:
192 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
193 /* invalid param size */
196 v4addr = (struct sctp_ipv4addr_param *)ph;
198 memset(sin, 0, sizeof(*sin));
199 sin->sin_family = AF_INET;
200 sin->sin_len = sizeof(struct sockaddr_in);
201 sin->sin_port = stcb->rport;
202 sin->sin_addr.s_addr = v4addr->addr;
203 if ((sin->sin_addr.s_addr == INADDR_BROADCAST) ||
204 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
207 if (sin->sin_addr.s_addr == INADDR_ANY)
209 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding ");
210 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
214 case SCTP_IPV6_ADDRESS:
215 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
216 /* invalid param size */
219 v6addr = (struct sctp_ipv6addr_param *)ph;
221 memset(sin6, 0, sizeof(*sin6));
222 sin6->sin6_family = AF_INET6;
223 sin6->sin6_len = sizeof(struct sockaddr_in6);
224 sin6->sin6_port = stcb->rport;
225 memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr,
226 sizeof(struct in6_addr));
227 if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
230 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
232 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding ");
233 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
237 m_reply = sctp_asconf_error_response(aph->correlation_id,
238 SCTP_CAUSE_INVALID_PARAM, (uint8_t *)aph,
243 /* if 0.0.0.0/::0, add the source address instead */
244 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
246 SCTPDBG(SCTP_DEBUG_ASCONF1,
247 "process_asconf_add_ip: using source addr ");
248 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src);
251 /* add the address */
253 m_reply = sctp_asconf_error_response(aph->correlation_id,
254 SCTP_CAUSE_INVALID_PARAM, (uint8_t *)aph,
256 } else if (sctp_add_remote_addr(stcb, sa, &net, stcb->asoc.port,
258 SCTP_ADDR_DYNAMIC_ADDED) != 0) {
259 SCTPDBG(SCTP_DEBUG_ASCONF1,
260 "process_asconf_add_ip: error adding address\n");
261 m_reply = sctp_asconf_error_response(aph->correlation_id,
262 SCTP_CAUSE_RESOURCE_SHORTAGE, (uint8_t *)aph,
265 if (response_required) {
267 sctp_asconf_success_response(aph->correlation_id);
270 /* notify upper layer */
271 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_ADD_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
272 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb, net);
273 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep,
276 sctp_send_hb(stcb, net, SCTP_SO_NOT_LOCKED);
284 sctp_asconf_del_remote_addrs_except(struct sctp_tcb *stcb, struct sockaddr *src)
286 struct sctp_nets *src_net, *net, *nnet;
288 /* make sure the source address exists as a destination net */
289 src_net = sctp_findnet(stcb, src);
290 if (src_net == NULL) {
295 /* delete all destination addresses except the source */
296 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
297 if (net != src_net) {
298 /* delete this address */
299 SCTPDBG(SCTP_DEBUG_ASCONF1,
300 "asconf_del_remote_addrs_except: deleting ");
301 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1,
302 (struct sockaddr *)&net->ro._l_addr);
303 /* notify upper layer */
304 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0,
305 (struct sockaddr *)&net->ro._l_addr, SCTP_SO_NOT_LOCKED);
306 sctp_remove_net(stcb, net);
313 sctp_process_asconf_delete_ip(struct sockaddr *src,
314 struct sctp_asconf_paramhdr *aph,
315 struct sctp_tcb *stcb, int response_required)
317 struct mbuf *m_reply = NULL;
318 union sctp_sockstore store;
319 struct sctp_paramhdr *ph;
320 uint16_t param_type, aparam_length;
321 #if defined(INET) || defined(INET6)
322 uint16_t param_length;
325 int zero_address = 0;
328 struct sockaddr_in *sin;
329 struct sctp_ipv4addr_param *v4addr;
332 struct sockaddr_in6 *sin6;
333 struct sctp_ipv6addr_param *v6addr;
336 aparam_length = ntohs(aph->ph.param_length);
337 if (aparam_length < sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_paramhdr)) {
340 ph = (struct sctp_paramhdr *)(aph + 1);
341 param_type = ntohs(ph->param_type);
342 #if defined(INET) || defined(INET6)
343 param_length = ntohs(ph->param_length);
344 if (param_length + sizeof(struct sctp_asconf_paramhdr) != aparam_length) {
349 switch (param_type) {
351 case SCTP_IPV4_ADDRESS:
352 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
353 /* invalid param size */
356 v4addr = (struct sctp_ipv4addr_param *)ph;
358 memset(sin, 0, sizeof(*sin));
359 sin->sin_family = AF_INET;
360 sin->sin_len = sizeof(struct sockaddr_in);
361 sin->sin_port = stcb->rport;
362 sin->sin_addr.s_addr = v4addr->addr;
363 if (sin->sin_addr.s_addr == INADDR_ANY)
365 SCTPDBG(SCTP_DEBUG_ASCONF1,
366 "process_asconf_delete_ip: deleting ");
367 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
371 case SCTP_IPV6_ADDRESS:
372 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
373 /* invalid param size */
376 v6addr = (struct sctp_ipv6addr_param *)ph;
378 memset(sin6, 0, sizeof(*sin6));
379 sin6->sin6_family = AF_INET6;
380 sin6->sin6_len = sizeof(struct sockaddr_in6);
381 sin6->sin6_port = stcb->rport;
382 memcpy(&sin6->sin6_addr, v6addr->addr,
383 sizeof(struct in6_addr));
384 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
386 SCTPDBG(SCTP_DEBUG_ASCONF1,
387 "process_asconf_delete_ip: deleting ");
388 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
392 m_reply = sctp_asconf_error_response(aph->correlation_id,
393 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *)aph,
398 /* make sure the source address is not being deleted */
399 if (sctp_cmpaddr(sa, src)) {
400 /* trying to delete the source address! */
401 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete source addr\n");
402 m_reply = sctp_asconf_error_response(aph->correlation_id,
403 SCTP_CAUSE_DELETING_SRC_ADDR, (uint8_t *)aph,
408 /* if deleting 0.0.0.0/::0, delete all addresses except src addr */
409 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
410 result = sctp_asconf_del_remote_addrs_except(stcb, src);
413 /* src address did not exist? */
414 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: src addr does not exist?\n");
415 /* what error to reply with?? */
417 sctp_asconf_error_response(aph->correlation_id,
418 SCTP_CAUSE_REQUEST_REFUSED, (uint8_t *)aph,
420 } else if (response_required) {
422 sctp_asconf_success_response(aph->correlation_id);
427 /* delete the address */
428 result = sctp_del_remote_addr(stcb, sa);
430 * note if result == -2, the address doesn't exist in the asoc but
431 * since it's being deleted anyways, we just ack the delete -- but
432 * this probably means something has already gone awry
435 /* only one address in the asoc */
436 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete last IP addr!\n");
437 m_reply = sctp_asconf_error_response(aph->correlation_id,
438 SCTP_CAUSE_DELETING_LAST_ADDR, (uint8_t *)aph,
441 if (response_required) {
442 m_reply = sctp_asconf_success_response(aph->correlation_id);
444 /* notify upper layer */
445 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
451 sctp_process_asconf_set_primary(struct sockaddr *src,
452 struct sctp_asconf_paramhdr *aph,
453 struct sctp_tcb *stcb, int response_required)
455 struct mbuf *m_reply = NULL;
456 union sctp_sockstore store;
457 struct sctp_paramhdr *ph;
458 uint16_t param_type, aparam_length;
459 #if defined(INET) || defined(INET6)
460 uint16_t param_length;
463 int zero_address = 0;
465 struct sockaddr_in *sin;
466 struct sctp_ipv4addr_param *v4addr;
469 struct sockaddr_in6 *sin6;
470 struct sctp_ipv6addr_param *v6addr;
473 aparam_length = ntohs(aph->ph.param_length);
474 if (aparam_length < sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_paramhdr)) {
477 ph = (struct sctp_paramhdr *)(aph + 1);
478 param_type = ntohs(ph->param_type);
479 #if defined(INET) || defined(INET6)
480 param_length = ntohs(ph->param_length);
481 if (param_length + sizeof(struct sctp_asconf_paramhdr) != aparam_length) {
486 switch (param_type) {
488 case SCTP_IPV4_ADDRESS:
489 if (param_length != sizeof(struct sctp_ipv4addr_param)) {
490 /* invalid param size */
493 v4addr = (struct sctp_ipv4addr_param *)ph;
495 memset(sin, 0, sizeof(*sin));
496 sin->sin_family = AF_INET;
497 sin->sin_len = sizeof(struct sockaddr_in);
498 sin->sin_addr.s_addr = v4addr->addr;
499 if (sin->sin_addr.s_addr == INADDR_ANY)
501 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: ");
502 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
506 case SCTP_IPV6_ADDRESS:
507 if (param_length != sizeof(struct sctp_ipv6addr_param)) {
508 /* invalid param size */
511 v6addr = (struct sctp_ipv6addr_param *)ph;
513 memset(sin6, 0, sizeof(*sin6));
514 sin6->sin6_family = AF_INET6;
515 sin6->sin6_len = sizeof(struct sockaddr_in6);
516 memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr,
517 sizeof(struct in6_addr));
518 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
520 SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: ");
521 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
525 m_reply = sctp_asconf_error_response(aph->correlation_id,
526 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *)aph,
531 /* if 0.0.0.0/::0, use the source address instead */
532 if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) {
534 SCTPDBG(SCTP_DEBUG_ASCONF1,
535 "process_asconf_set_primary: using source addr ");
536 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src);
538 /* set the primary address */
539 if (sctp_set_primary_addr(stcb, sa, NULL) == 0) {
540 SCTPDBG(SCTP_DEBUG_ASCONF1,
541 "process_asconf_set_primary: primary address set\n");
542 /* notify upper layer */
543 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_SET_PRIMARY, stcb, 0, sa, SCTP_SO_NOT_LOCKED);
544 if ((stcb->asoc.primary_destination->dest_state & SCTP_ADDR_REACHABLE) &&
545 (!(stcb->asoc.primary_destination->dest_state & SCTP_ADDR_PF)) &&
546 (stcb->asoc.alternate)) {
547 sctp_free_remote_addr(stcb->asoc.alternate);
548 stcb->asoc.alternate = NULL;
550 if (response_required) {
551 m_reply = sctp_asconf_success_response(aph->correlation_id);
554 * Mobility adaptation. Ideally, when the reception of SET
555 * PRIMARY with DELETE IP ADDRESS of the previous primary
556 * destination, unacknowledged DATA are retransmitted
557 * immediately to the new primary destination for seamless
558 * handover. If the destination is UNCONFIRMED and marked to
559 * REQ_PRIM, The retransmission occur when reception of the
560 * HEARTBEAT-ACK. (See sctp_handle_heartbeat_ack in
561 * sctp_input.c) Also, when change of the primary
562 * destination, it is better that all subsequent new DATA
563 * containing already queued DATA are transmitted to the new
564 * primary destination. (by micchie)
566 if ((sctp_is_mobility_feature_on(stcb->sctp_ep,
567 SCTP_MOBILITY_BASE) ||
568 sctp_is_mobility_feature_on(stcb->sctp_ep,
569 SCTP_MOBILITY_FASTHANDOFF)) &&
570 sctp_is_mobility_feature_on(stcb->sctp_ep,
571 SCTP_MOBILITY_PRIM_DELETED) &&
572 (stcb->asoc.primary_destination->dest_state &
573 SCTP_ADDR_UNCONFIRMED) == 0) {
575 sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED,
576 stcb->sctp_ep, stcb, NULL,
577 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_1);
578 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
579 SCTP_MOBILITY_FASTHANDOFF)) {
580 sctp_assoc_immediate_retrans(stcb,
581 stcb->asoc.primary_destination);
583 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
584 SCTP_MOBILITY_BASE)) {
585 sctp_move_chunks_from_net(stcb,
586 stcb->asoc.deleted_primary);
588 sctp_delete_prim_timer(stcb->sctp_ep, stcb,
589 stcb->asoc.deleted_primary);
592 /* couldn't set the requested primary address! */
593 SCTPDBG(SCTP_DEBUG_ASCONF1,
594 "process_asconf_set_primary: set primary failed!\n");
595 /* must have been an invalid address, so report */
596 m_reply = sctp_asconf_error_response(aph->correlation_id,
597 SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *)aph,
605 * handles an ASCONF chunk.
606 * if all parameters are processed ok, send a plain (empty) ASCONF-ACK
609 sctp_handle_asconf(struct mbuf *m, unsigned int offset,
610 struct sockaddr *src,
611 struct sctp_asconf_chunk *cp, struct sctp_tcb *stcb,
614 struct sctp_association *asoc;
616 struct mbuf *n, *m_ack, *m_result, *m_tail;
617 struct sctp_asconf_ack_chunk *ack_cp;
618 struct sctp_asconf_paramhdr *aph;
619 struct sctp_ipv6addr_param *p_addr;
620 unsigned int asconf_limit, cnt;
621 int error = 0; /* did an error occur? */
623 /* asconf param buffer */
624 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
625 struct sctp_asconf_ack *ack, *ack_next;
627 /* verify minimum length */
628 if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_chunk)) {
629 SCTPDBG(SCTP_DEBUG_ASCONF1,
630 "handle_asconf: chunk too small = %xh\n",
631 ntohs(cp->ch.chunk_length));
635 serial_num = ntohl(cp->serial_number);
637 if (SCTP_TSN_GE(asoc->asconf_seq_in, serial_num)) {
638 /* got a duplicate ASCONF */
639 SCTPDBG(SCTP_DEBUG_ASCONF1,
640 "handle_asconf: got duplicate serial number = %xh\n",
643 } else if (serial_num != (asoc->asconf_seq_in + 1)) {
644 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: incorrect serial number = %xh (expected next = %xh)\n",
645 serial_num, asoc->asconf_seq_in + 1);
649 /* it's the expected "next" sequence number, so process it */
650 asoc->asconf_seq_in = serial_num; /* update sequence */
651 /* get length of all the param's in the ASCONF */
652 asconf_limit = offset + ntohs(cp->ch.chunk_length);
653 SCTPDBG(SCTP_DEBUG_ASCONF1,
654 "handle_asconf: asconf_limit=%u, sequence=%xh\n",
655 asconf_limit, serial_num);
658 /* delete old cache */
659 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: Now processing first ASCONF. Try to delete old cache\n");
661 TAILQ_FOREACH_SAFE(ack, &asoc->asconf_ack_sent, next, ack_next) {
662 if (ack->serial_number == serial_num)
664 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: delete old(%u) < first(%u)\n",
665 ack->serial_number, serial_num);
666 TAILQ_REMOVE(&asoc->asconf_ack_sent, ack, next);
667 if (ack->data != NULL) {
668 sctp_m_freem(ack->data);
670 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), ack);
674 m_ack = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_ack_chunk), 0,
675 M_NOWAIT, 1, MT_DATA);
677 SCTPDBG(SCTP_DEBUG_ASCONF1,
678 "handle_asconf: couldn't get mbuf!\n");
681 m_tail = m_ack; /* current reply chain's tail */
683 /* fill in ASCONF-ACK header */
684 ack_cp = mtod(m_ack, struct sctp_asconf_ack_chunk *);
685 ack_cp->ch.chunk_type = SCTP_ASCONF_ACK;
686 ack_cp->ch.chunk_flags = 0;
687 ack_cp->serial_number = htonl(serial_num);
688 /* set initial lengths (eg. just an ASCONF-ACK), ntohx at the end! */
689 SCTP_BUF_LEN(m_ack) = sizeof(struct sctp_asconf_ack_chunk);
690 ack_cp->ch.chunk_length = sizeof(struct sctp_asconf_ack_chunk);
692 /* skip the lookup address parameter */
693 offset += sizeof(struct sctp_asconf_chunk);
694 p_addr = (struct sctp_ipv6addr_param *)sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr), (uint8_t *)&aparam_buf);
695 if (p_addr == NULL) {
696 SCTPDBG(SCTP_DEBUG_ASCONF1,
697 "handle_asconf: couldn't get lookup addr!\n");
698 /* respond with a missing/invalid mandatory parameter error */
702 /* skip lookup addr */
703 offset += SCTP_SIZE32(ntohs(p_addr->ph.param_length));
704 /* get pointer to first asconf param in ASCONF */
705 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, sizeof(struct sctp_asconf_paramhdr), (uint8_t *)&aparam_buf);
707 SCTPDBG(SCTP_DEBUG_ASCONF1, "Empty ASCONF received?\n");
710 /* process through all parameters */
712 while (aph != NULL) {
713 unsigned int param_length, param_type;
715 param_type = ntohs(aph->ph.param_type);
716 param_length = ntohs(aph->ph.param_length);
717 if (offset + param_length > asconf_limit) {
718 /* parameter goes beyond end of chunk! */
724 if (param_length > sizeof(aparam_buf)) {
725 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) larger than buffer size!\n", param_length);
729 if (param_length <= sizeof(struct sctp_paramhdr)) {
730 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) too short\n", param_length);
734 /* get the entire parameter */
735 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf);
737 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: couldn't get entire param\n");
741 switch (param_type) {
742 case SCTP_ADD_IP_ADDRESS:
743 m_result = sctp_process_asconf_add_ip(src, aph, stcb,
744 (cnt < SCTP_BASE_SYSCTL(sctp_hb_maxburst)), error);
747 case SCTP_DEL_IP_ADDRESS:
748 m_result = sctp_process_asconf_delete_ip(src, aph, stcb,
751 case SCTP_ERROR_CAUSE_IND:
752 /* not valid in an ASCONF chunk */
754 case SCTP_SET_PRIM_ADDR:
755 m_result = sctp_process_asconf_set_primary(src, aph,
759 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: sees a NAT VTAG state parameter\n");
761 case SCTP_SUCCESS_REPORT:
762 /* not valid in an ASCONF chunk */
764 case SCTP_ULP_ADAPTATION:
768 if ((param_type & 0x8000) == 0) {
769 /* Been told to STOP at this param */
770 asconf_limit = offset;
772 * FIX FIX - We need to call
773 * sctp_arethere_unrecognized_parameters()
774 * to get a operr and send it for any
775 * param's with the 0x4000 bit set OR do it
776 * here ourselves... note we still must STOP
777 * if the 0x8000 bit is clear.
780 /* unknown/invalid param type */
784 /* add any (error) result to the reply mbuf chain */
785 if (m_result != NULL) {
786 SCTP_BUF_NEXT(m_tail) = m_result;
788 ack_cp->ch.chunk_length += SCTP_BUF_LEN(m_result);
789 /* set flag to force success reports */
792 offset += SCTP_SIZE32(param_length);
793 /* update remaining ASCONF message length to process */
794 if (offset >= asconf_limit) {
795 /* no more data in the mbuf chain */
798 /* get pointer to next asconf param */
799 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset,
800 sizeof(struct sctp_asconf_paramhdr),
801 (uint8_t *)&aparam_buf);
803 /* can't get an asconf paramhdr */
804 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: can't get asconf param hdr!\n");
805 /* FIX ME - add error here... */
810 ack_cp->ch.chunk_length = htons(ack_cp->ch.chunk_length);
811 /* save the ASCONF-ACK reply */
812 ack = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asconf_ack),
813 struct sctp_asconf_ack);
818 ack->serial_number = serial_num;
819 ack->last_sent_to = NULL;
822 for (n = m_ack; n != NULL; n = SCTP_BUF_NEXT(n)) {
823 ack->len += SCTP_BUF_LEN(n);
825 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_ack_sent, ack, next);
827 /* see if last_control_chunk_from is set properly (use IP src addr) */
828 if (stcb->asoc.last_control_chunk_from == NULL) {
830 * this could happen if the source address was just newly
833 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: looking up net for IP source address\n");
834 SCTPDBG(SCTP_DEBUG_ASCONF1, "Looking for IP source: ");
835 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src);
836 /* look up the from address */
837 stcb->asoc.last_control_chunk_from = sctp_findnet(stcb, src);
839 if (stcb->asoc.last_control_chunk_from == NULL) {
840 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: IP source address not found?!\n");
847 * does the address match? returns 0 if not, 1 if so
850 sctp_asconf_addr_match(struct sctp_asconf_addr *aa, struct sockaddr *sa)
852 switch (sa->sa_family) {
857 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
859 if ((aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) &&
860 (memcmp(&aa->ap.addrp.addr, &sin6->sin6_addr,
861 sizeof(struct in6_addr)) == 0)) {
870 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
872 if ((aa->ap.addrp.ph.param_type == SCTP_IPV4_ADDRESS) &&
873 (memcmp(&aa->ap.addrp.addr, &sin->sin_addr,
874 sizeof(struct in_addr)) == 0)) {
887 * does the address match? returns 0 if not, 1 if so
890 sctp_addr_match(struct sctp_paramhdr *ph, struct sockaddr *sa)
892 #if defined(INET) || defined(INET6)
893 uint16_t param_type, param_length;
895 param_type = ntohs(ph->param_type);
896 param_length = ntohs(ph->param_length);
898 switch (sa->sa_family) {
903 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
904 struct sctp_ipv6addr_param *v6addr;
906 v6addr = (struct sctp_ipv6addr_param *)ph;
907 if ((param_type == SCTP_IPV6_ADDRESS) &&
908 (param_length == sizeof(struct sctp_ipv6addr_param)) &&
909 (memcmp(&v6addr->addr, &sin6->sin6_addr,
910 sizeof(struct in6_addr)) == 0)) {
919 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
920 struct sctp_ipv4addr_param *v4addr;
922 v4addr = (struct sctp_ipv4addr_param *)ph;
923 if ((param_type == SCTP_IPV4_ADDRESS) &&
924 (param_length == sizeof(struct sctp_ipv4addr_param)) &&
925 (memcmp(&v4addr->addr, &sin->sin_addr,
926 sizeof(struct in_addr)) == 0)) {
939 * Cleanup for non-responded/OP ERR'd ASCONF
942 sctp_asconf_cleanup(struct sctp_tcb *stcb, struct sctp_nets *net)
945 * clear out any existing asconfs going out
947 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net,
948 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_2);
949 stcb->asoc.asconf_seq_out_acked = stcb->asoc.asconf_seq_out;
950 /* remove the old ASCONF on our outbound queue */
951 sctp_toss_old_asconf(stcb);
955 * cleanup any cached source addresses that may be topologically
956 * incorrect after a new address has been added to this interface.
959 sctp_asconf_nets_cleanup(struct sctp_tcb *stcb, struct sctp_ifn *ifn)
961 struct sctp_nets *net;
964 * Ideally, we want to only clear cached routes and source addresses
965 * that are topologically incorrect. But since there is no easy way
966 * to know whether the newly added address on the ifn would cause a
967 * routing change (i.e. a new egress interface would be chosen)
968 * without doing a new routing lookup and source address selection,
969 * we will (for now) just flush any cached route using a different
970 * ifn (and cached source addrs) and let output re-choose them
971 * during the next send on that net.
973 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
975 * clear any cached route (and cached source address) if the
976 * route's interface is NOT the same as the address change.
977 * If it's the same interface, just clear the cached source
980 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro) &&
982 (SCTP_GET_IF_INDEX_FROM_ROUTE(&net->ro) != ifn->ifn_index))) {
983 /* clear any cached route */
984 RTFREE(net->ro.ro_rt);
985 net->ro.ro_rt = NULL;
987 /* clear any cached source address */
988 if (net->src_addr_selected) {
989 sctp_free_ifa(net->ro._s_addr);
990 net->ro._s_addr = NULL;
991 net->src_addr_selected = 0;
998 sctp_assoc_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *dstnet)
1002 if (dstnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
1005 if (stcb->asoc.deleted_primary == NULL) {
1009 if (!TAILQ_EMPTY(&stcb->asoc.sent_queue)) {
1010 SCTPDBG(SCTP_DEBUG_ASCONF1, "assoc_immediate_retrans: Deleted primary is ");
1011 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.deleted_primary->ro._l_addr.sa);
1012 SCTPDBG(SCTP_DEBUG_ASCONF1, "Current Primary is ");
1013 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.primary_destination->ro._l_addr.sa);
1014 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb,
1015 stcb->asoc.deleted_primary,
1016 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_3);
1017 stcb->asoc.num_send_timers_up--;
1018 if (stcb->asoc.num_send_timers_up < 0) {
1019 stcb->asoc.num_send_timers_up = 0;
1021 SCTP_TCB_LOCK_ASSERT(stcb);
1022 error = sctp_t3rxt_timer(stcb->sctp_ep, stcb,
1023 stcb->asoc.deleted_primary);
1025 SCTP_INP_DECR_REF(stcb->sctp_ep);
1028 SCTP_TCB_LOCK_ASSERT(stcb);
1029 #ifdef SCTP_AUDITING_ENABLED
1030 sctp_auditing(4, stcb->sctp_ep, stcb, stcb->asoc.deleted_primary);
1032 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1033 if ((stcb->asoc.num_send_timers_up == 0) &&
1034 (stcb->asoc.sent_queue_cnt > 0)) {
1035 struct sctp_tmit_chunk *chk;
1037 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1038 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep,
1046 sctp_asconf_queue_mgmt(struct sctp_tcb *, struct sctp_ifa *, uint16_t);
1049 sctp_net_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *net)
1051 struct sctp_tmit_chunk *chk;
1053 SCTPDBG(SCTP_DEBUG_ASCONF1, "net_immediate_retrans: RTO is %d\n", net->RTO);
1054 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net,
1055 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_4);
1056 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
1057 net->error_count = 0;
1058 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
1059 if (chk->whoTo == net) {
1060 if (chk->sent < SCTP_DATAGRAM_RESEND) {
1061 chk->sent = SCTP_DATAGRAM_RESEND;
1062 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
1063 sctp_flight_size_decrease(chk);
1064 sctp_total_flight_decrease(stcb, chk);
1065 net->marked_retrans++;
1066 stcb->asoc.marked_retrans++;
1070 if (net->marked_retrans) {
1071 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1076 sctp_path_check_and_react(struct sctp_tcb *stcb, struct sctp_ifa *newifa)
1078 struct sctp_nets *net;
1079 int addrnum, changed;
1082 * If number of local valid addresses is 1, the valid address is
1083 * probably newly added address. Several valid addresses in this
1084 * association. A source address may not be changed. Additionally,
1085 * they can be configured on a same interface as "alias" addresses.
1088 addrnum = sctp_local_addr_count(stcb);
1089 SCTPDBG(SCTP_DEBUG_ASCONF1, "p_check_react(): %d local addresses\n",
1092 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1093 /* clear any cached route and source address */
1094 if (net->ro.ro_rt) {
1095 RTFREE(net->ro.ro_rt);
1096 net->ro.ro_rt = NULL;
1098 if (net->src_addr_selected) {
1099 sctp_free_ifa(net->ro._s_addr);
1100 net->ro._s_addr = NULL;
1101 net->src_addr_selected = 0;
1103 /* Retransmit unacknowledged DATA chunks immediately */
1104 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1105 SCTP_MOBILITY_FASTHANDOFF)) {
1106 sctp_net_immediate_retrans(stcb, net);
1108 /* also, SET PRIMARY is maybe already sent */
1113 /* Multiple local addresses exsist in the association. */
1114 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1115 /* clear any cached route and source address */
1116 if (net->ro.ro_rt) {
1117 RTFREE(net->ro.ro_rt);
1118 net->ro.ro_rt = NULL;
1120 if (net->src_addr_selected) {
1121 sctp_free_ifa(net->ro._s_addr);
1122 net->ro._s_addr = NULL;
1123 net->src_addr_selected = 0;
1126 * Check if the nexthop is corresponding to the new address.
1127 * If the new address is corresponding to the current
1128 * nexthop, the path will be changed. If the new address is
1129 * NOT corresponding to the current nexthop, the path will
1132 SCTP_RTALLOC((sctp_route_t *)&net->ro,
1133 stcb->sctp_ep->def_vrf_id,
1134 stcb->sctp_ep->fibnum);
1135 if (net->ro.ro_rt == NULL)
1139 switch (net->ro._l_addr.sa.sa_family) {
1142 if (sctp_v4src_match_nexthop(newifa, (sctp_route_t *)&net->ro)) {
1149 if (sctp_v6src_match_nexthop(
1150 &newifa->address.sin6, (sctp_route_t *)&net->ro)) {
1159 * if the newly added address does not relate routing
1160 * information, we skip.
1164 /* Retransmit unacknowledged DATA chunks immediately */
1165 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1166 SCTP_MOBILITY_FASTHANDOFF)) {
1167 sctp_net_immediate_retrans(stcb, net);
1169 /* Send SET PRIMARY for this new address */
1170 if (net == stcb->asoc.primary_destination) {
1171 (void)sctp_asconf_queue_mgmt(stcb, newifa,
1172 SCTP_SET_PRIM_ADDR);
1178 * process an ADD/DELETE IP ack from peer.
1179 * addr: corresponding sctp_ifa to the address being added/deleted.
1180 * type: SCTP_ADD_IP_ADDRESS or SCTP_DEL_IP_ADDRESS.
1181 * flag: 1=success, 0=failure.
1184 sctp_asconf_addr_mgmt_ack(struct sctp_tcb *stcb, struct sctp_ifa *addr, uint32_t flag)
1187 * do the necessary asoc list work- if we get a failure indication,
1188 * leave the address on the assoc's restricted list. If we get a
1189 * success indication, remove the address from the restricted list.
1192 * Note: this will only occur for ADD_IP_ADDRESS, since
1193 * DEL_IP_ADDRESS is never actually added to the list...
1196 /* success case, so remove from the restricted list */
1197 sctp_del_local_addr_restricted(stcb, addr);
1199 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
1200 SCTP_MOBILITY_BASE) ||
1201 sctp_is_mobility_feature_on(stcb->sctp_ep,
1202 SCTP_MOBILITY_FASTHANDOFF)) {
1203 sctp_path_check_and_react(stcb, addr);
1206 /* clear any cached/topologically incorrect source addresses */
1207 sctp_asconf_nets_cleanup(stcb, addr->ifn_p);
1209 /* else, leave it on the list */
1213 * add an asconf add/delete/set primary IP address parameter to the queue.
1214 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1215 * returns 0 if queued, -1 if not queued/removed.
1216 * NOTE: if adding, but a delete for the same address is already scheduled
1217 * (and not yet sent out), simply remove it from queue. Same for deleting
1218 * an address already scheduled for add. If a duplicate operation is found,
1219 * ignore the new one.
1222 sctp_asconf_queue_mgmt(struct sctp_tcb *stcb, struct sctp_ifa *ifa,
1225 struct sctp_asconf_addr *aa, *aa_next;
1227 /* make sure the request isn't already in the queue */
1228 TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) {
1229 /* address match? */
1230 if (sctp_asconf_addr_match(aa, &ifa->address.sa) == 0)
1233 * is the request already in queue but not sent? pass the
1234 * request already sent in order to resolve the following
1235 * case: 1. arrival of ADD, then sent 2. arrival of DEL. we
1236 * can't remove the ADD request already sent 3. arrival of
1239 if (aa->ap.aph.ph.param_type == type && aa->sent == 0) {
1242 /* is the negative request already in queue, and not sent */
1243 if ((aa->sent == 0) && (type == SCTP_ADD_IP_ADDRESS) &&
1244 (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS)) {
1245 /* add requested, delete already queued */
1246 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1247 /* remove the ifa from the restricted list */
1248 sctp_del_local_addr_restricted(stcb, ifa);
1249 /* free the asconf param */
1250 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1251 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: add removes queued entry\n");
1254 if ((aa->sent == 0) && (type == SCTP_DEL_IP_ADDRESS) &&
1255 (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS)) {
1256 /* delete requested, add already queued */
1257 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1258 /* remove the aa->ifa from the restricted list */
1259 sctp_del_local_addr_restricted(stcb, aa->ifa);
1260 /* free the asconf param */
1261 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1262 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: delete removes queued entry\n");
1267 /* adding new request to the queue */
1268 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
1271 /* didn't get memory */
1272 SCTPDBG(SCTP_DEBUG_ASCONF1, "asconf_queue_mgmt: failed to get memory!\n");
1275 aa->special_del = 0;
1276 /* fill in asconf address parameter fields */
1277 /* top level elements are "networked" during send */
1278 aa->ap.aph.ph.param_type = type;
1280 atomic_add_int(&ifa->refcount, 1);
1281 /* correlation_id filled in during send routine later... */
1282 switch (ifa->address.sa.sa_family) {
1286 struct sockaddr_in6 *sin6;
1288 sin6 = &ifa->address.sin6;
1289 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
1290 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param));
1291 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) +
1292 sizeof(struct sctp_ipv6addr_param);
1293 memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr,
1294 sizeof(struct in6_addr));
1301 struct sockaddr_in *sin;
1303 sin = &ifa->address.sin;
1304 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
1305 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param));
1306 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) +
1307 sizeof(struct sctp_ipv4addr_param);
1308 memcpy(&aa->ap.addrp.addr, &sin->sin_addr,
1309 sizeof(struct in_addr));
1314 /* invalid family! */
1315 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1319 aa->sent = 0; /* clear sent flag */
1321 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
1323 if (SCTP_BASE_SYSCTL(sctp_debug_on) & SCTP_DEBUG_ASCONF2) {
1324 if (type == SCTP_ADD_IP_ADDRESS) {
1325 SCTP_PRINTF("asconf_queue_mgmt: inserted asconf ADD_IP_ADDRESS: ");
1326 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa);
1327 } else if (type == SCTP_DEL_IP_ADDRESS) {
1328 SCTP_PRINTF("asconf_queue_mgmt: appended asconf DEL_IP_ADDRESS: ");
1329 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa);
1331 SCTP_PRINTF("asconf_queue_mgmt: appended asconf SET_PRIM_ADDR: ");
1332 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa);
1342 * add an asconf operation for the given ifa and type.
1343 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1344 * returns 0 if completed, -1 if not completed, 1 if immediate send is
1348 sctp_asconf_queue_add(struct sctp_tcb *stcb, struct sctp_ifa *ifa,
1352 int pending_delete_queued = 0;
1355 /* see if peer supports ASCONF */
1356 if (stcb->asoc.asconf_supported == 0) {
1361 * if this is deleting the last address from the assoc, mark it as
1364 if ((type == SCTP_DEL_IP_ADDRESS) && !stcb->asoc.asconf_del_pending) {
1365 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1366 last = (sctp_local_addr_count(stcb) == 0);
1368 last = (sctp_local_addr_count(stcb) == 1);
1371 /* set the pending delete info only */
1372 stcb->asoc.asconf_del_pending = 1;
1373 stcb->asoc.asconf_addr_del_pending = ifa;
1374 atomic_add_int(&ifa->refcount, 1);
1375 SCTPDBG(SCTP_DEBUG_ASCONF2,
1376 "asconf_queue_add: mark delete last address pending\n");
1381 /* queue an asconf parameter */
1382 status = sctp_asconf_queue_mgmt(stcb, ifa, type);
1385 * if this is an add, and there is a delete also pending (i.e. the
1386 * last local address is being changed), queue the pending delete
1389 if ((type == SCTP_ADD_IP_ADDRESS) && stcb->asoc.asconf_del_pending && (status == 0)) {
1390 /* queue in the pending delete */
1391 if (sctp_asconf_queue_mgmt(stcb,
1392 stcb->asoc.asconf_addr_del_pending,
1393 SCTP_DEL_IP_ADDRESS) == 0) {
1394 SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_add: queuing pending delete\n");
1395 pending_delete_queued = 1;
1396 /* clear out the pending delete info */
1397 stcb->asoc.asconf_del_pending = 0;
1398 sctp_free_ifa(stcb->asoc.asconf_addr_del_pending);
1399 stcb->asoc.asconf_addr_del_pending = NULL;
1403 if (pending_delete_queued) {
1404 struct sctp_nets *net;
1407 * since we know that the only/last address is now being
1408 * changed in this case, reset the cwnd/rto on all nets to
1409 * start as a new address and path. Also clear the error
1410 * counts to give the assoc the best chance to complete the
1413 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1414 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb,
1417 net->error_count = 0;
1419 stcb->asoc.overall_error_count = 0;
1420 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) {
1421 sctp_misc_ints(SCTP_THRESHOLD_CLEAR,
1422 stcb->asoc.overall_error_count,
1424 SCTP_FROM_SCTP_ASCONF,
1428 /* queue in an advisory set primary too */
1429 (void)sctp_asconf_queue_mgmt(stcb, ifa, SCTP_SET_PRIM_ADDR);
1430 /* let caller know we should send this out immediately */
1437 * add an asconf delete IP address parameter to the queue by sockaddr and
1438 * possibly with no sctp_ifa available. This is only called by the routine
1439 * that checks the addresses in an INIT-ACK against the current address list.
1440 * returns 0 if completed, non-zero if not completed.
1441 * NOTE: if an add is already scheduled (and not yet sent out), simply
1442 * remove it from queue. If a duplicate operation is found, ignore the
1446 sctp_asconf_queue_sa_delete(struct sctp_tcb *stcb, struct sockaddr *sa)
1448 struct sctp_ifa *ifa;
1449 struct sctp_asconf_addr *aa, *aa_next;
1454 /* see if peer supports ASCONF */
1455 if (stcb->asoc.asconf_supported == 0) {
1458 /* make sure the request isn't already in the queue */
1459 TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) {
1460 /* address match? */
1461 if (sctp_asconf_addr_match(aa, sa) == 0)
1463 /* is the request already in queue (sent or not) */
1464 if (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) {
1467 /* is the negative request already in queue, and not sent */
1470 if (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS) {
1471 /* add already queued, so remove existing entry */
1472 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next);
1473 sctp_del_local_addr_restricted(stcb, aa->ifa);
1474 /* free the entry */
1475 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1480 /* find any existing ifa-- NOTE ifa CAN be allowed to be NULL */
1481 ifa = sctp_find_ifa_by_addr(sa, stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
1483 /* adding new request to the queue */
1484 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
1487 /* didn't get memory */
1488 SCTPDBG(SCTP_DEBUG_ASCONF1,
1489 "sctp_asconf_queue_sa_delete: failed to get memory!\n");
1492 aa->special_del = 0;
1493 /* fill in asconf address parameter fields */
1494 /* top level elements are "networked" during send */
1495 aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS;
1498 atomic_add_int(&ifa->refcount, 1);
1499 /* correlation_id filled in during send routine later... */
1500 switch (sa->sa_family) {
1505 struct sockaddr_in6 *sin6;
1507 sin6 = (struct sockaddr_in6 *)sa;
1508 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
1509 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param));
1510 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv6addr_param);
1511 memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr,
1512 sizeof(struct in6_addr));
1520 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
1522 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
1523 aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param));
1524 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv4addr_param);
1525 memcpy(&aa->ap.addrp.addr, &sin->sin_addr,
1526 sizeof(struct in_addr));
1531 /* invalid family! */
1532 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
1537 aa->sent = 0; /* clear sent flag */
1539 /* delete goes to the back of the queue */
1540 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
1542 /* sa_ignore MEMLEAK {memory is put on the tailq} */
1547 * find a specific asconf param on our "sent" queue
1549 static struct sctp_asconf_addr *
1550 sctp_asconf_find_param(struct sctp_tcb *stcb, uint32_t correlation_id)
1552 struct sctp_asconf_addr *aa;
1554 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
1555 if (aa->ap.aph.correlation_id == correlation_id &&
1561 /* didn't find it */
1566 * process an SCTP_ERROR_CAUSE_IND for a ASCONF-ACK parameter and do
1567 * notifications based on the error response
1570 sctp_asconf_process_error(struct sctp_tcb *stcb SCTP_UNUSED,
1571 struct sctp_asconf_paramhdr *aph)
1573 struct sctp_error_cause *eh;
1574 struct sctp_paramhdr *ph;
1575 uint16_t param_type;
1576 uint16_t error_code;
1578 eh = (struct sctp_error_cause *)(aph + 1);
1579 ph = (struct sctp_paramhdr *)(eh + 1);
1580 /* validate lengths */
1581 if (htons(eh->length) + sizeof(struct sctp_error_cause) >
1582 htons(aph->ph.param_length)) {
1583 /* invalid error cause length */
1584 SCTPDBG(SCTP_DEBUG_ASCONF1,
1585 "asconf_process_error: cause element too long\n");
1588 if (htons(ph->param_length) + sizeof(struct sctp_paramhdr) >
1589 htons(eh->length)) {
1590 /* invalid included TLV length */
1591 SCTPDBG(SCTP_DEBUG_ASCONF1,
1592 "asconf_process_error: included TLV too long\n");
1595 /* which error code ? */
1596 error_code = ntohs(eh->code);
1597 param_type = ntohs(aph->ph.param_type);
1598 /* FIX: this should go back up the REMOTE_ERROR ULP notify */
1599 switch (error_code) {
1600 case SCTP_CAUSE_RESOURCE_SHORTAGE:
1601 /* we allow ourselves to "try again" for this error */
1604 /* peer can't handle it... */
1605 switch (param_type) {
1606 case SCTP_ADD_IP_ADDRESS:
1607 case SCTP_DEL_IP_ADDRESS:
1608 case SCTP_SET_PRIM_ADDR:
1617 * process an asconf queue param.
1618 * aparam: parameter to process, will be removed from the queue.
1619 * flag: 1=success case, 0=failure case
1622 sctp_asconf_process_param_ack(struct sctp_tcb *stcb,
1623 struct sctp_asconf_addr *aparam, uint32_t flag)
1625 uint16_t param_type;
1627 /* process this param */
1628 param_type = aparam->ap.aph.ph.param_type;
1629 switch (param_type) {
1630 case SCTP_ADD_IP_ADDRESS:
1631 SCTPDBG(SCTP_DEBUG_ASCONF1,
1632 "process_param_ack: added IP address\n");
1633 sctp_asconf_addr_mgmt_ack(stcb, aparam->ifa, flag);
1635 case SCTP_DEL_IP_ADDRESS:
1636 SCTPDBG(SCTP_DEBUG_ASCONF1,
1637 "process_param_ack: deleted IP address\n");
1638 /* nothing really to do... lists already updated */
1640 case SCTP_SET_PRIM_ADDR:
1641 SCTPDBG(SCTP_DEBUG_ASCONF1,
1642 "process_param_ack: set primary IP address\n");
1643 /* nothing to do... peer may start using this addr */
1646 /* should NEVER happen */
1650 /* remove the param and free it */
1651 TAILQ_REMOVE(&stcb->asoc.asconf_queue, aparam, next);
1653 sctp_free_ifa(aparam->ifa);
1654 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
1658 * cleanup from a bad asconf ack parameter
1661 sctp_asconf_ack_clear(struct sctp_tcb *stcb SCTP_UNUSED)
1663 /* assume peer doesn't really know how to do asconfs */
1664 /* XXX we could free the pending queue here */
1669 sctp_handle_asconf_ack(struct mbuf *m, int offset,
1670 struct sctp_asconf_ack_chunk *cp, struct sctp_tcb *stcb,
1671 struct sctp_nets *net, int *abort_no_unlock)
1673 struct sctp_association *asoc;
1674 uint32_t serial_num;
1675 uint16_t ack_length;
1676 struct sctp_asconf_paramhdr *aph;
1677 struct sctp_asconf_addr *aa, *aa_next;
1678 uint32_t last_error_id = 0; /* last error correlation id */
1680 struct sctp_asconf_addr *ap;
1682 /* asconf param buffer */
1683 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
1685 /* verify minimum length */
1686 if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_ack_chunk)) {
1687 SCTPDBG(SCTP_DEBUG_ASCONF1,
1688 "handle_asconf_ack: chunk too small = %xh\n",
1689 ntohs(cp->ch.chunk_length));
1693 serial_num = ntohl(cp->serial_number);
1696 * NOTE: we may want to handle this differently- currently, we will
1697 * abort when we get an ack for the expected serial number + 1 (eg.
1698 * we didn't send it), process an ack normally if it is the expected
1699 * serial number, and re-send the previous ack for *ALL* other
1704 * if the serial number is the next expected, but I didn't send it,
1705 * abort the asoc, since someone probably just hijacked us...
1707 if (serial_num == (asoc->asconf_seq_out + 1)) {
1708 struct mbuf *op_err;
1709 char msg[SCTP_DIAG_INFO_LEN];
1711 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got unexpected next serial number! Aborting asoc!\n");
1712 snprintf(msg, sizeof(msg), "Never sent serial number %8.8x",
1714 op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
1715 sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED);
1716 *abort_no_unlock = 1;
1719 if (serial_num != asoc->asconf_seq_out_acked + 1) {
1720 /* got a duplicate/unexpected ASCONF-ACK */
1721 SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got duplicate/unexpected serial number = %xh (expected = %xh)\n",
1722 serial_num, asoc->asconf_seq_out_acked + 1);
1726 if (serial_num == asoc->asconf_seq_out - 1) {
1727 /* stop our timer */
1728 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net,
1729 SCTP_FROM_SCTP_ASCONF + SCTP_LOC_5);
1732 /* process the ASCONF-ACK contents */
1733 ack_length = ntohs(cp->ch.chunk_length) -
1734 sizeof(struct sctp_asconf_ack_chunk);
1735 offset += sizeof(struct sctp_asconf_ack_chunk);
1736 /* process through all parameters */
1737 while (ack_length >= sizeof(struct sctp_asconf_paramhdr)) {
1738 unsigned int param_length, param_type;
1740 /* get pointer to next asconf parameter */
1741 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset,
1742 sizeof(struct sctp_asconf_paramhdr), aparam_buf);
1744 /* can't get an asconf paramhdr */
1745 sctp_asconf_ack_clear(stcb);
1748 param_type = ntohs(aph->ph.param_type);
1749 param_length = ntohs(aph->ph.param_length);
1750 if (param_length > ack_length) {
1751 sctp_asconf_ack_clear(stcb);
1754 if (param_length < sizeof(struct sctp_paramhdr)) {
1755 sctp_asconf_ack_clear(stcb);
1758 /* get the complete parameter... */
1759 if (param_length > sizeof(aparam_buf)) {
1760 SCTPDBG(SCTP_DEBUG_ASCONF1,
1761 "param length (%u) larger than buffer size!\n", param_length);
1762 sctp_asconf_ack_clear(stcb);
1765 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf);
1767 sctp_asconf_ack_clear(stcb);
1770 /* correlation_id is transparent to peer, no ntohl needed */
1771 id = aph->correlation_id;
1773 switch (param_type) {
1774 case SCTP_ERROR_CAUSE_IND:
1776 /* find the corresponding asconf param in our queue */
1777 ap = sctp_asconf_find_param(stcb, id);
1779 /* hmm... can't find this in our queue! */
1782 /* process the parameter, failed flag */
1783 sctp_asconf_process_param_ack(stcb, ap, 0);
1784 /* process the error response */
1785 sctp_asconf_process_error(stcb, aph);
1787 case SCTP_SUCCESS_REPORT:
1788 /* find the corresponding asconf param in our queue */
1789 ap = sctp_asconf_find_param(stcb, id);
1791 /* hmm... can't find this in our queue! */
1794 /* process the parameter, success flag */
1795 sctp_asconf_process_param_ack(stcb, ap, 1);
1801 /* update remaining ASCONF-ACK message length to process */
1802 ack_length -= SCTP_SIZE32(param_length);
1803 if (ack_length <= 0) {
1804 /* no more data in the mbuf chain */
1807 offset += SCTP_SIZE32(param_length);
1811 * if there are any "sent" params still on the queue, these are
1812 * implicitly "success", or "failed" (if we got an error back) ...
1813 * so process these appropriately
1815 * we assume that the correlation_id's are monotonically increasing
1816 * beginning from 1 and that we don't have *that* many outstanding
1819 if (last_error_id == 0)
1820 last_error_id--; /* set to "max" value */
1821 TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) {
1822 if (aa->sent == 1) {
1824 * implicitly successful or failed if correlation_id
1825 * < last_error_id, then success else, failure
1827 if (aa->ap.aph.correlation_id < last_error_id)
1828 sctp_asconf_process_param_ack(stcb, aa, 1);
1830 sctp_asconf_process_param_ack(stcb, aa, 0);
1833 * since we always process in order (FIFO queue) if
1834 * we reach one that hasn't been sent, the rest
1835 * should not have been sent either. so, we're
1842 /* update the next sequence number to use */
1843 asoc->asconf_seq_out_acked++;
1844 /* remove the old ASCONF on our outbound queue */
1845 sctp_toss_old_asconf(stcb);
1846 if (!TAILQ_EMPTY(&stcb->asoc.asconf_queue)) {
1847 #ifdef SCTP_TIMER_BASED_ASCONF
1848 /* we have more params, so restart our timer */
1849 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep,
1852 /* we have more params, so send out more */
1853 sctp_send_asconf(stcb, net, SCTP_ADDR_NOT_LOCKED);
1860 sctp_is_scopeid_in_nets(struct sctp_tcb *stcb, struct sockaddr *sa)
1862 struct sockaddr_in6 *sin6, *net6;
1863 struct sctp_nets *net;
1865 if (sa->sa_family != AF_INET6) {
1869 sin6 = (struct sockaddr_in6 *)sa;
1870 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) == 0) {
1871 /* not link local address */
1874 /* hunt through our destination nets list for this scope_id */
1875 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1876 if (((struct sockaddr *)(&net->ro._l_addr))->sa_family !=
1879 net6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1880 if (IN6_IS_ADDR_LINKLOCAL(&net6->sin6_addr) == 0)
1882 if (sctp_is_same_scope(sin6, net6)) {
1887 /* didn't find one */
1893 * address management functions
1896 sctp_addr_mgmt_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1897 struct sctp_ifa *ifa, uint16_t type, int addr_locked)
1901 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0 ||
1902 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
1903 /* subset bound, no ASCONF allowed case, so ignore */
1907 * note: we know this is not the subset bound, no ASCONF case eg.
1908 * this is boundall or subset bound w/ASCONF allowed
1911 /* first, make sure that the address is IPv4 or IPv6 and not jailed */
1912 switch (ifa->address.sa.sa_family) {
1915 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1916 &ifa->address.sin6.sin6_addr) != 0) {
1923 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1924 &ifa->address.sin.sin_addr) != 0) {
1933 /* make sure we're "allowed" to add this type of addr */
1934 if (ifa->address.sa.sa_family == AF_INET6) {
1935 /* invalid if we're not a v6 endpoint */
1936 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0)
1938 /* is the v6 addr really valid ? */
1939 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
1944 /* put this address on the "pending/do not use yet" list */
1945 sctp_add_local_addr_restricted(stcb, ifa);
1947 * check address scope if address is out of scope, don't queue
1948 * anything... note: this would leave the address on both inp and
1951 switch (ifa->address.sa.sa_family) {
1955 struct sockaddr_in6 *sin6;
1957 sin6 = &ifa->address.sin6;
1958 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1959 /* we skip unspecifed addresses */
1962 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1963 if (stcb->asoc.scope.local_scope == 0) {
1966 /* is it the right link local scope? */
1967 if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) {
1971 if (stcb->asoc.scope.site_scope == 0 &&
1972 IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
1981 struct sockaddr_in *sin;
1982 struct in6pcb *inp6;
1984 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
1985 /* invalid if we are a v6 only endpoint */
1986 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1987 SCTP_IPV6_V6ONLY(inp6))
1990 sin = &ifa->address.sin;
1991 if (sin->sin_addr.s_addr == 0) {
1992 /* we skip unspecifed addresses */
1995 if (stcb->asoc.scope.ipv4_local_scope == 0 &&
1996 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
2003 /* else, not AF_INET or AF_INET6, so skip */
2007 /* queue an asconf for this address add/delete */
2008 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
2009 /* does the peer do asconf? */
2010 if (stcb->asoc.asconf_supported) {
2011 /* queue an asconf for this addr */
2012 status = sctp_asconf_queue_add(stcb, ifa, type);
2015 * if queued ok, and in the open state, send out the
2016 * ASCONF. If in the non-open state, these will be
2017 * sent when the state goes open.
2020 ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
2021 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED))) {
2022 #ifdef SCTP_TIMER_BASED_ASCONF
2023 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp,
2024 stcb, stcb->asoc.primary_destination);
2026 sctp_send_asconf(stcb, NULL, addr_locked);
2035 sctp_asconf_iterator_ep(struct sctp_inpcb *inp, void *ptr, uint32_t val SCTP_UNUSED)
2037 struct sctp_asconf_iterator *asc;
2038 struct sctp_ifa *ifa;
2039 struct sctp_laddr *l;
2040 int cnt_invalid = 0;
2042 asc = (struct sctp_asconf_iterator *)ptr;
2043 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2045 switch (ifa->address.sa.sa_family) {
2048 /* invalid if we're not a v6 endpoint */
2049 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
2051 if (asc->cnt == cnt_invalid)
2059 /* invalid if we are a v6 only endpoint */
2060 struct in6pcb *inp6;
2062 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
2063 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2064 SCTP_IPV6_V6ONLY(inp6)) {
2066 if (asc->cnt == cnt_invalid)
2073 /* invalid address family */
2075 if (asc->cnt == cnt_invalid)
2083 sctp_asconf_iterator_ep_end(struct sctp_inpcb *inp, void *ptr, uint32_t val SCTP_UNUSED)
2085 struct sctp_ifa *ifa;
2086 struct sctp_asconf_iterator *asc;
2087 struct sctp_laddr *laddr, *nladdr, *l;
2089 /* Only for specific case not bound all */
2090 asc = (struct sctp_asconf_iterator *)ptr;
2091 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2093 if (l->action == SCTP_ADD_IP_ADDRESS) {
2094 LIST_FOREACH(laddr, &inp->sctp_addr_list,
2096 if (laddr->ifa == ifa) {
2102 } else if (l->action == SCTP_DEL_IP_ADDRESS) {
2103 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
2104 /* remove only after all guys are done */
2105 if (laddr->ifa == ifa) {
2106 sctp_del_local_addr_ep(inp, ifa);
2115 sctp_asconf_iterator_stcb(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2116 void *ptr, uint32_t val SCTP_UNUSED)
2118 struct sctp_asconf_iterator *asc;
2119 struct sctp_ifa *ifa;
2120 struct sctp_laddr *l;
2121 int cnt_invalid = 0;
2125 asc = (struct sctp_asconf_iterator *)ptr;
2126 LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) {
2130 /* address's vrf_id must be the vrf_id of the assoc */
2131 if (ifa->vrf_id != stcb->asoc.vrf_id) {
2135 /* Same checks again for assoc */
2136 switch (ifa->address.sa.sa_family) {
2140 /* invalid if we're not a v6 endpoint */
2141 struct sockaddr_in6 *sin6;
2143 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
2145 if (asc->cnt == cnt_invalid)
2150 sin6 = &ifa->address.sin6;
2151 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2152 /* we skip unspecifed addresses */
2155 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
2156 &sin6->sin6_addr) != 0) {
2159 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
2160 if (stcb->asoc.scope.local_scope == 0) {
2163 /* is it the right link local scope? */
2164 if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) {
2174 /* invalid if we are a v6 only endpoint */
2175 struct in6pcb *inp6;
2176 struct sockaddr_in *sin;
2178 inp6 = (struct in6pcb *)&inp->ip_inp.inp;
2179 /* invalid if we are a v6 only endpoint */
2180 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2181 SCTP_IPV6_V6ONLY(inp6))
2184 sin = &ifa->address.sin;
2185 if (sin->sin_addr.s_addr == 0) {
2186 /* we skip unspecifed addresses */
2189 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
2190 &sin->sin_addr) != 0) {
2193 if (stcb->asoc.scope.ipv4_local_scope == 0 &&
2194 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
2197 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
2198 SCTP_IPV6_V6ONLY(inp6)) {
2200 if (asc->cnt == cnt_invalid)
2209 /* invalid address family */
2211 if (asc->cnt == cnt_invalid)
2218 if (type == SCTP_ADD_IP_ADDRESS) {
2219 /* prevent this address from being used as a source */
2220 sctp_add_local_addr_restricted(stcb, ifa);
2221 } else if (type == SCTP_DEL_IP_ADDRESS) {
2222 struct sctp_nets *net;
2224 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2227 /* delete this address if cached */
2228 if (net->ro._s_addr == ifa) {
2229 sctp_free_ifa(net->ro._s_addr);
2230 net->ro._s_addr = NULL;
2231 net->src_addr_selected = 0;
2235 net->ro.ro_rt = NULL;
2238 * Now we deleted our src address,
2239 * should we not also now reset the
2240 * cwnd/rto to start as if its a new
2243 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
2248 } else if (type == SCTP_SET_PRIM_ADDR) {
2249 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2250 /* must validate the ifa is in the ep */
2251 if (sctp_is_addr_in_ep(stcb->sctp_ep, ifa) == 0) {
2255 /* Need to check scopes for this guy */
2256 if (sctp_is_address_in_scope(ifa, &stcb->asoc.scope, 0) == 0) {
2261 /* queue an asconf for this address add/delete */
2262 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF) &&
2263 stcb->asoc.asconf_supported == 1) {
2264 /* queue an asconf for this addr */
2265 status = sctp_asconf_queue_add(stcb, ifa, type);
2267 * if queued ok, and in the open state, update the
2268 * count of queued params. If in the non-open
2269 * state, these get sent when the assoc goes open.
2271 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
2272 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
2280 * If we have queued params in the open state, send out an ASCONF.
2282 if (num_queued > 0) {
2283 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2288 sctp_asconf_iterator_end(void *ptr, uint32_t val SCTP_UNUSED)
2290 struct sctp_asconf_iterator *asc;
2291 struct sctp_ifa *ifa;
2292 struct sctp_laddr *l, *nl;
2294 asc = (struct sctp_asconf_iterator *)ptr;
2295 LIST_FOREACH_SAFE(l, &asc->list_of_work, sctp_nxt_addr, nl) {
2297 if (l->action == SCTP_ADD_IP_ADDRESS) {
2298 /* Clear the defer use flag */
2299 ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
2302 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), l);
2303 SCTP_DECR_LADDR_COUNT();
2305 SCTP_FREE(asc, SCTP_M_ASC_IT);
2309 * sa is the sockaddr to ask the peer to set primary to.
2310 * returns: 0 = completed, -1 = error
2313 sctp_set_primary_ip_address_sa(struct sctp_tcb *stcb, struct sockaddr *sa)
2316 struct sctp_ifa *ifa;
2318 /* find the ifa for the desired set primary */
2319 vrf_id = stcb->asoc.vrf_id;
2320 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
2322 /* Invalid address */
2326 /* queue an ASCONF:SET_PRIM_ADDR to be sent */
2327 if (!sctp_asconf_queue_add(stcb, ifa, SCTP_SET_PRIM_ADDR)) {
2328 /* set primary queuing succeeded */
2329 SCTPDBG(SCTP_DEBUG_ASCONF1,
2330 "set_primary_ip_address_sa: queued on tcb=%p, ",
2332 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
2333 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
2334 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
2335 #ifdef SCTP_TIMER_BASED_ASCONF
2336 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2337 stcb->sctp_ep, stcb,
2338 stcb->asoc.primary_destination);
2340 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2344 SCTPDBG(SCTP_DEBUG_ASCONF1, "set_primary_ip_address_sa: failed to add to queue on tcb=%p, ",
2346 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa);
2353 sctp_is_addr_pending(struct sctp_tcb *stcb, struct sctp_ifa *sctp_ifa)
2355 struct sctp_tmit_chunk *chk, *nchk;
2356 unsigned int offset, asconf_limit;
2357 struct sctp_asconf_chunk *acp;
2358 struct sctp_asconf_paramhdr *aph;
2359 uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE];
2360 struct sctp_paramhdr *ph;
2361 int add_cnt, del_cnt;
2362 uint16_t last_param_type;
2364 add_cnt = del_cnt = 0;
2365 last_param_type = 0;
2366 TAILQ_FOREACH_SAFE(chk, &stcb->asoc.asconf_send_queue, sctp_next, nchk) {
2367 if (chk->data == NULL) {
2368 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: No mbuf data?\n");
2372 acp = mtod(chk->data, struct sctp_asconf_chunk *);
2373 offset += sizeof(struct sctp_asconf_chunk);
2374 asconf_limit = ntohs(acp->ch.chunk_length);
2375 ph = (struct sctp_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_paramhdr), aparam_buf);
2377 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get lookup addr!\n");
2380 offset += ntohs(ph->param_length);
2382 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf);
2384 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: Empty ASCONF will be sent?\n");
2387 while (aph != NULL) {
2388 unsigned int param_length, param_type;
2390 param_type = ntohs(aph->ph.param_type);
2391 param_length = ntohs(aph->ph.param_length);
2392 if (offset + param_length > asconf_limit) {
2393 /* parameter goes beyond end of chunk! */
2396 if (param_length > sizeof(aparam_buf)) {
2397 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length (%u) larger than buffer size!\n", param_length);
2400 if (param_length <= sizeof(struct sctp_paramhdr)) {
2401 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length(%u) too short\n", param_length);
2405 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, param_length, aparam_buf);
2407 SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get entire param\n");
2411 ph = (struct sctp_paramhdr *)(aph + 1);
2412 if (sctp_addr_match(ph, &sctp_ifa->address.sa) != 0) {
2413 switch (param_type) {
2414 case SCTP_ADD_IP_ADDRESS:
2417 case SCTP_DEL_IP_ADDRESS:
2423 last_param_type = param_type;
2426 offset += SCTP_SIZE32(param_length);
2427 if (offset >= asconf_limit) {
2428 /* no more data in the mbuf chain */
2431 /* get pointer to next asconf param */
2432 aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf);
2437 * we want to find the sequences which consist of ADD -> DEL -> ADD
2440 if (add_cnt > del_cnt ||
2441 (add_cnt == del_cnt && last_param_type == SCTP_ADD_IP_ADDRESS)) {
2447 static struct sockaddr *
2448 sctp_find_valid_localaddr(struct sctp_tcb *stcb, int addr_locked)
2450 struct sctp_vrf *vrf = NULL;
2451 struct sctp_ifn *sctp_ifn;
2452 struct sctp_ifa *sctp_ifa;
2454 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2455 SCTP_IPI_ADDR_RLOCK();
2456 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
2458 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2459 SCTP_IPI_ADDR_RUNLOCK();
2462 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
2463 if (stcb->asoc.scope.loopback_scope == 0 &&
2464 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
2465 /* Skip if loopback_scope not set */
2468 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
2469 switch (sctp_ifa->address.sa.sa_family) {
2472 if (stcb->asoc.scope.ipv4_addr_legal) {
2473 struct sockaddr_in *sin;
2475 sin = &sctp_ifa->address.sin;
2476 if (sin->sin_addr.s_addr == 0) {
2477 /* skip unspecifed addresses */
2480 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
2481 &sin->sin_addr) != 0) {
2484 if (stcb->asoc.scope.ipv4_local_scope == 0 &&
2485 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))
2488 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
2489 (!sctp_is_addr_pending(stcb, sctp_ifa)))
2492 * found a valid local v4 address to
2495 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2496 SCTP_IPI_ADDR_RUNLOCK();
2497 return (&sctp_ifa->address.sa);
2503 if (stcb->asoc.scope.ipv6_addr_legal) {
2504 struct sockaddr_in6 *sin6;
2506 if (sctp_ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
2510 sin6 = &sctp_ifa->address.sin6;
2511 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2513 * we skip unspecifed
2518 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
2519 &sin6->sin6_addr) != 0) {
2522 if (stcb->asoc.scope.local_scope == 0 &&
2523 IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
2525 if (stcb->asoc.scope.site_scope == 0 &&
2526 IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))
2529 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
2530 (!sctp_is_addr_pending(stcb, sctp_ifa)))
2533 * found a valid local v6 address to
2536 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2537 SCTP_IPI_ADDR_RUNLOCK();
2538 return (&sctp_ifa->address.sa);
2547 /* no valid addresses found */
2548 if (addr_locked == SCTP_ADDR_NOT_LOCKED)
2549 SCTP_IPI_ADDR_RUNLOCK();
2553 static struct sockaddr *
2554 sctp_find_valid_localaddr_ep(struct sctp_tcb *stcb)
2556 struct sctp_laddr *laddr;
2558 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
2559 if (laddr->ifa == NULL) {
2562 /* is the address restricted ? */
2563 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
2564 (!sctp_is_addr_pending(stcb, laddr->ifa)))
2567 /* found a valid local address to use */
2568 return (&laddr->ifa->address.sa);
2570 /* no valid addresses found */
2575 * builds an ASCONF chunk from queued ASCONF params.
2576 * returns NULL on error (no mbuf, no ASCONF params queued, etc).
2579 sctp_compose_asconf(struct sctp_tcb *stcb, int *retlen, int addr_locked)
2581 struct mbuf *m_asconf, *m_asconf_chk;
2582 struct sctp_asconf_addr *aa;
2583 struct sctp_asconf_chunk *acp;
2584 struct sctp_asconf_paramhdr *aph;
2585 struct sctp_asconf_addr_param *aap;
2587 uint32_t correlation_id = 1; /* 0 is reserved... */
2588 caddr_t ptr, lookup_ptr;
2589 uint8_t lookup_used = 0;
2591 /* are there any asconf params to send? */
2592 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
2600 * get a chunk header mbuf and a cluster for the asconf params since
2601 * it's simpler to fill in the asconf chunk header lookup address on
2604 m_asconf_chk = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_chunk), 0, M_NOWAIT, 1, MT_DATA);
2605 if (m_asconf_chk == NULL) {
2607 SCTPDBG(SCTP_DEBUG_ASCONF1,
2608 "compose_asconf: couldn't get chunk mbuf!\n");
2611 m_asconf = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
2612 if (m_asconf == NULL) {
2614 SCTPDBG(SCTP_DEBUG_ASCONF1,
2615 "compose_asconf: couldn't get mbuf!\n");
2616 sctp_m_freem(m_asconf_chk);
2619 SCTP_BUF_LEN(m_asconf_chk) = sizeof(struct sctp_asconf_chunk);
2620 SCTP_BUF_LEN(m_asconf) = 0;
2621 acp = mtod(m_asconf_chk, struct sctp_asconf_chunk *);
2622 memset(acp, 0, sizeof(struct sctp_asconf_chunk));
2623 /* save pointers to lookup address and asconf params */
2624 lookup_ptr = (caddr_t)(acp + 1); /* after the header */
2625 ptr = mtod(m_asconf, caddr_t); /* beginning of cluster */
2627 /* fill in chunk header info */
2628 acp->ch.chunk_type = SCTP_ASCONF;
2629 acp->ch.chunk_flags = 0;
2630 acp->serial_number = htonl(stcb->asoc.asconf_seq_out);
2631 stcb->asoc.asconf_seq_out++;
2633 /* add parameters... up to smallest MTU allowed */
2634 TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) {
2637 /* get the parameter length */
2638 p_length = SCTP_SIZE32(aa->ap.aph.ph.param_length);
2639 /* will it fit in current chunk? */
2640 if ((SCTP_BUF_LEN(m_asconf) + p_length > stcb->asoc.smallest_mtu) ||
2641 (SCTP_BUF_LEN(m_asconf) + p_length > MCLBYTES)) {
2642 /* won't fit, so we're done with this chunk */
2645 /* assign (and store) a correlation id */
2646 aa->ap.aph.correlation_id = correlation_id++;
2649 * fill in address if we're doing a delete this is a simple
2650 * way for us to fill in the correlation address, which
2651 * should only be used by the peer if we're deleting our
2652 * source address and adding a new address (e.g. renumbering
2655 if (lookup_used == 0 &&
2656 (aa->special_del == 0) &&
2657 aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) {
2658 struct sctp_ipv6addr_param *lookup;
2659 uint16_t p_size, addr_size;
2661 lookup = (struct sctp_ipv6addr_param *)lookup_ptr;
2662 lookup->ph.param_type =
2663 htons(aa->ap.addrp.ph.param_type);
2664 if (aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) {
2665 /* copy IPv6 address */
2666 p_size = sizeof(struct sctp_ipv6addr_param);
2667 addr_size = sizeof(struct in6_addr);
2669 /* copy IPv4 address */
2670 p_size = sizeof(struct sctp_ipv4addr_param);
2671 addr_size = sizeof(struct in_addr);
2673 lookup->ph.param_length = htons(SCTP_SIZE32(p_size));
2674 memcpy(lookup->addr, &aa->ap.addrp.addr, addr_size);
2675 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size);
2678 /* copy into current space */
2679 memcpy(ptr, &aa->ap, p_length);
2681 /* network elements and update lengths */
2682 aph = (struct sctp_asconf_paramhdr *)ptr;
2683 aap = (struct sctp_asconf_addr_param *)ptr;
2684 /* correlation_id is transparent to peer, no htonl needed */
2685 aph->ph.param_type = htons(aph->ph.param_type);
2686 aph->ph.param_length = htons(aph->ph.param_length);
2687 aap->addrp.ph.param_type = htons(aap->addrp.ph.param_type);
2688 aap->addrp.ph.param_length = htons(aap->addrp.ph.param_length);
2690 SCTP_BUF_LEN(m_asconf) += SCTP_SIZE32(p_length);
2691 ptr += SCTP_SIZE32(p_length);
2694 * these params are removed off the pending list upon
2695 * getting an ASCONF-ACK back from the peer, just set flag
2699 /* check to see if the lookup addr has been populated yet */
2700 if (lookup_used == 0) {
2701 /* NOTE: if the address param is optional, can skip this... */
2702 /* add any valid (existing) address... */
2703 struct sctp_ipv6addr_param *lookup;
2704 uint16_t p_size, addr_size;
2705 struct sockaddr *found_addr;
2708 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)
2709 found_addr = sctp_find_valid_localaddr(stcb,
2712 found_addr = sctp_find_valid_localaddr_ep(stcb);
2714 lookup = (struct sctp_ipv6addr_param *)lookup_ptr;
2715 if (found_addr != NULL) {
2716 switch (found_addr->sa_family) {
2719 /* copy IPv6 address */
2720 lookup->ph.param_type =
2721 htons(SCTP_IPV6_ADDRESS);
2722 p_size = sizeof(struct sctp_ipv6addr_param);
2723 addr_size = sizeof(struct in6_addr);
2724 addr_ptr = (caddr_t)&((struct sockaddr_in6 *)
2725 found_addr)->sin6_addr;
2730 /* copy IPv4 address */
2731 lookup->ph.param_type =
2732 htons(SCTP_IPV4_ADDRESS);
2733 p_size = sizeof(struct sctp_ipv4addr_param);
2734 addr_size = sizeof(struct in_addr);
2735 addr_ptr = (caddr_t)&((struct sockaddr_in *)
2736 found_addr)->sin_addr;
2745 lookup->ph.param_length = htons(SCTP_SIZE32(p_size));
2746 memcpy(lookup->addr, addr_ptr, addr_size);
2747 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size);
2749 /* uh oh... don't have any address?? */
2750 SCTPDBG(SCTP_DEBUG_ASCONF1,
2751 "compose_asconf: no lookup addr!\n");
2752 /* XXX for now, we send a IPv4 address of 0.0.0.0 */
2753 lookup->ph.param_type = htons(SCTP_IPV4_ADDRESS);
2754 lookup->ph.param_length = htons(SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param)));
2755 memset(lookup->addr, 0, sizeof(struct in_addr));
2756 SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param));
2759 /* chain it all together */
2760 SCTP_BUF_NEXT(m_asconf_chk) = m_asconf;
2761 *retlen = SCTP_BUF_LEN(m_asconf_chk) + SCTP_BUF_LEN(m_asconf);
2762 acp->ch.chunk_length = htons(*retlen);
2764 return (m_asconf_chk);
2768 * section to handle address changes before an association is up eg. changes
2769 * during INIT/INIT-ACK/COOKIE-ECHO handshake
2773 * processes the (local) addresses in the INIT-ACK chunk
2776 sctp_process_initack_addresses(struct sctp_tcb *stcb, struct mbuf *m,
2777 unsigned int offset, unsigned int length)
2779 struct sctp_paramhdr tmp_param, *ph;
2780 uint16_t plen, ptype;
2781 struct sctp_ifa *sctp_ifa;
2782 union sctp_sockstore store;
2784 struct sctp_ipv6addr_param addr6_store;
2787 struct sctp_ipv4addr_param addr4_store;
2790 SCTPDBG(SCTP_DEBUG_ASCONF2, "processing init-ack addresses\n");
2791 if (stcb == NULL) /* Un-needed check for SA */
2794 /* convert to upper bound */
2797 if ((offset + sizeof(struct sctp_paramhdr)) > length) {
2800 /* go through the addresses in the init-ack */
2801 ph = (struct sctp_paramhdr *)
2802 sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr),
2803 (uint8_t *)&tmp_param);
2804 while (ph != NULL) {
2805 ptype = ntohs(ph->param_type);
2806 plen = ntohs(ph->param_length);
2809 case SCTP_IPV6_ADDRESS:
2811 struct sctp_ipv6addr_param *a6p;
2813 /* get the entire IPv6 address param */
2814 a6p = (struct sctp_ipv6addr_param *)
2815 sctp_m_getptr(m, offset,
2816 sizeof(struct sctp_ipv6addr_param),
2817 (uint8_t *)&addr6_store);
2818 if (plen != sizeof(struct sctp_ipv6addr_param) ||
2822 memset(&store, 0, sizeof(union sctp_sockstore));
2823 store.sin6.sin6_family = AF_INET6;
2824 store.sin6.sin6_len = sizeof(struct sockaddr_in6);
2825 store.sin6.sin6_port = stcb->rport;
2826 memcpy(&store.sin6.sin6_addr, a6p->addr, sizeof(struct in6_addr));
2831 case SCTP_IPV4_ADDRESS:
2833 struct sctp_ipv4addr_param *a4p;
2835 /* get the entire IPv4 address param */
2836 a4p = (struct sctp_ipv4addr_param *)sctp_m_getptr(m, offset,
2837 sizeof(struct sctp_ipv4addr_param),
2838 (uint8_t *)&addr4_store);
2839 if (plen != sizeof(struct sctp_ipv4addr_param) ||
2843 memset(&store, 0, sizeof(union sctp_sockstore));
2844 store.sin.sin_family = AF_INET;
2845 store.sin.sin_len = sizeof(struct sockaddr_in);
2846 store.sin.sin_port = stcb->rport;
2847 store.sin.sin_addr.s_addr = a4p->addr;
2855 /* see if this address really (still) exists */
2856 sctp_ifa = sctp_find_ifa_by_addr(&store.sa, stcb->asoc.vrf_id,
2857 SCTP_ADDR_NOT_LOCKED);
2858 if (sctp_ifa == NULL) {
2859 /* address doesn't exist anymore */
2862 /* are ASCONFs allowed ? */
2863 if ((sctp_is_feature_on(stcb->sctp_ep,
2864 SCTP_PCB_FLAGS_DO_ASCONF)) &&
2865 stcb->asoc.asconf_supported) {
2866 /* queue an ASCONF DEL_IP_ADDRESS */
2867 status = sctp_asconf_queue_sa_delete(stcb, &store.sa);
2869 * if queued ok, and in correct state, send
2873 SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) {
2874 #ifdef SCTP_TIMER_BASED_ASCONF
2875 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF,
2876 stcb->sctp_ep, stcb,
2877 stcb->asoc.primary_destination);
2879 sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED);
2887 * Sanity check: Make sure the length isn't 0, otherwise
2888 * we'll be stuck in this loop for a long time...
2890 if (SCTP_SIZE32(plen) == 0) {
2891 SCTP_PRINTF("process_initack_addrs: bad len (%d) type=%xh\n",
2895 /* get next parameter */
2896 offset += SCTP_SIZE32(plen);
2897 if ((offset + sizeof(struct sctp_paramhdr)) > length)
2899 ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset,
2900 sizeof(struct sctp_paramhdr), (uint8_t *)&tmp_param);
2904 /* FIX ME: need to verify return result for v6 address type if v6 disabled */
2906 * checks to see if a specific address is in the initack address list returns
2907 * 1 if found, 0 if not
2910 sctp_addr_in_initack(struct mbuf *m, uint32_t offset, uint32_t length, struct sockaddr *sa)
2912 struct sctp_paramhdr tmp_param, *ph;
2913 uint16_t plen, ptype;
2915 struct sockaddr_in *sin;
2916 struct sctp_ipv4addr_param *a4p;
2917 struct sctp_ipv6addr_param addr4_store;
2920 struct sockaddr_in6 *sin6;
2921 struct sctp_ipv6addr_param *a6p;
2922 struct sctp_ipv6addr_param addr6_store;
2923 struct sockaddr_in6 sin6_tmp;
2926 switch (sa->sa_family) {
2939 SCTPDBG(SCTP_DEBUG_ASCONF2, "find_initack_addr: starting search for ");
2940 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, sa);
2941 /* convert to upper bound */
2944 if ((offset + sizeof(struct sctp_paramhdr)) > length) {
2945 SCTPDBG(SCTP_DEBUG_ASCONF1,
2946 "find_initack_addr: invalid offset?\n");
2949 /* go through the addresses in the init-ack */
2950 ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset,
2951 sizeof(struct sctp_paramhdr), (uint8_t *)&tmp_param);
2952 while (ph != NULL) {
2953 ptype = ntohs(ph->param_type);
2954 plen = ntohs(ph->param_length);
2957 case SCTP_IPV6_ADDRESS:
2958 if (sa->sa_family == AF_INET6) {
2959 /* get the entire IPv6 address param */
2960 if (plen != sizeof(struct sctp_ipv6addr_param)) {
2963 /* get the entire IPv6 address param */
2964 a6p = (struct sctp_ipv6addr_param *)
2965 sctp_m_getptr(m, offset,
2966 sizeof(struct sctp_ipv6addr_param),
2967 (uint8_t *)&addr6_store);
2971 sin6 = (struct sockaddr_in6 *)sa;
2972 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2973 /* create a copy and clear scope */
2974 memcpy(&sin6_tmp, sin6,
2975 sizeof(struct sockaddr_in6));
2977 in6_clearscope(&sin6->sin6_addr);
2979 if (memcmp(&sin6->sin6_addr, a6p->addr,
2980 sizeof(struct in6_addr)) == 0) {
2988 case SCTP_IPV4_ADDRESS:
2989 if (sa->sa_family == AF_INET) {
2990 if (plen != sizeof(struct sctp_ipv4addr_param)) {
2993 /* get the entire IPv4 address param */
2994 a4p = (struct sctp_ipv4addr_param *)
2995 sctp_m_getptr(m, offset,
2996 sizeof(struct sctp_ipv4addr_param),
2997 (uint8_t *)&addr4_store);
3001 sin = (struct sockaddr_in *)sa;
3002 if (sin->sin_addr.s_addr == a4p->addr) {
3012 /* get next parameter */
3013 offset += SCTP_SIZE32(plen);
3014 if (offset + sizeof(struct sctp_paramhdr) > length) {
3017 ph = (struct sctp_paramhdr *)
3018 sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr),
3019 (uint8_t *)&tmp_param);
3026 * makes sure that the current endpoint local addr list is consistent with
3027 * the new association (eg. subset bound, asconf allowed) adds addresses as
3031 sctp_check_address_list_ep(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3032 int length, struct sockaddr *init_addr)
3034 struct sctp_laddr *laddr;
3036 /* go through the endpoint list */
3037 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
3038 /* be paranoid and validate the laddr */
3039 if (laddr->ifa == NULL) {
3040 SCTPDBG(SCTP_DEBUG_ASCONF1,
3041 "check_addr_list_ep: laddr->ifa is NULL");
3044 if (laddr->ifa == NULL) {
3045 SCTPDBG(SCTP_DEBUG_ASCONF1, "check_addr_list_ep: laddr->ifa->ifa_addr is NULL");
3048 /* do i have it implicitly? */
3049 if (sctp_cmpaddr(&laddr->ifa->address.sa, init_addr)) {
3052 /* check to see if in the init-ack */
3053 if (!sctp_addr_in_initack(m, offset, length, &laddr->ifa->address.sa)) {
3055 sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb, laddr->ifa,
3056 SCTP_ADD_IP_ADDRESS, SCTP_ADDR_NOT_LOCKED);
3062 * makes sure that the current kernel address list is consistent with the new
3063 * association (with all addrs bound) adds addresses as necessary
3066 sctp_check_address_list_all(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3067 int length, struct sockaddr *init_addr,
3068 uint16_t local_scope, uint16_t site_scope,
3069 uint16_t ipv4_scope, uint16_t loopback_scope)
3071 struct sctp_vrf *vrf = NULL;
3072 struct sctp_ifn *sctp_ifn;
3073 struct sctp_ifa *sctp_ifa;
3076 struct sockaddr_in *sin;
3079 struct sockaddr_in6 *sin6;
3083 vrf_id = stcb->asoc.vrf_id;
3087 SCTP_IPI_ADDR_RLOCK();
3088 vrf = sctp_find_vrf(vrf_id);
3090 SCTP_IPI_ADDR_RUNLOCK();
3093 /* go through all our known interfaces */
3094 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
3095 if (loopback_scope == 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
3096 /* skip loopback interface */
3099 /* go through each interface address */
3100 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
3101 /* do i have it implicitly? */
3102 if (sctp_cmpaddr(&sctp_ifa->address.sa, init_addr)) {
3105 switch (sctp_ifa->address.sa.sa_family) {
3108 sin = &sctp_ifa->address.sin;
3109 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
3110 &sin->sin_addr) != 0) {
3113 if ((ipv4_scope == 0) &&
3114 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
3115 /* private address not in scope */
3122 sin6 = &sctp_ifa->address.sin6;
3123 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
3124 &sin6->sin6_addr) != 0) {
3127 if ((local_scope == 0) &&
3128 (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))) {
3131 if ((site_scope == 0) &&
3132 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
3140 /* check to see if in the init-ack */
3141 if (!sctp_addr_in_initack(m, offset, length, &sctp_ifa->address.sa)) {
3143 sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb,
3144 sctp_ifa, SCTP_ADD_IP_ADDRESS,
3147 } /* end foreach ifa */
3148 } /* end foreach ifn */
3149 SCTP_IPI_ADDR_RUNLOCK();
3153 * validates an init-ack chunk (from a cookie-echo) with current addresses
3154 * adds addresses from the init-ack into our local address list, if needed
3155 * queues asconf adds/deletes addresses as needed and makes appropriate list
3156 * changes for source address selection m, offset: points to the start of the
3157 * address list in an init-ack chunk length: total length of the address
3158 * params only init_addr: address where my INIT-ACK was sent from
3161 sctp_check_address_list(struct sctp_tcb *stcb, struct mbuf *m, int offset,
3162 int length, struct sockaddr *init_addr,
3163 uint16_t local_scope, uint16_t site_scope,
3164 uint16_t ipv4_scope, uint16_t loopback_scope)
3166 /* process the local addresses in the initack */
3167 sctp_process_initack_addresses(stcb, m, offset, length);
3169 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3170 /* bound all case */
3171 sctp_check_address_list_all(stcb, m, offset, length, init_addr,
3172 local_scope, site_scope, ipv4_scope, loopback_scope);
3174 /* subset bound case */
3175 if (sctp_is_feature_on(stcb->sctp_ep,
3176 SCTP_PCB_FLAGS_DO_ASCONF)) {
3177 /* asconf's allowed */
3178 sctp_check_address_list_ep(stcb, m, offset, length,
3181 /* else, no asconfs allowed, so what we sent is what we get */
3186 * sctp_bindx() support
3189 sctp_addr_mgmt_ep_sa(struct sctp_inpcb *inp, struct sockaddr *sa,
3190 uint32_t type, uint32_t vrf_id, struct sctp_ifa *sctp_ifap)
3192 struct sctp_ifa *ifa;
3193 struct sctp_laddr *laddr, *nladdr;
3195 if (sa->sa_len == 0) {
3196 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL);
3201 } else if (type == SCTP_ADD_IP_ADDRESS) {
3202 /* For an add the address MUST be on the system */
3203 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
3204 } else if (type == SCTP_DEL_IP_ADDRESS) {
3205 /* For a delete we need to find it in the inp */
3206 ifa = sctp_find_ifa_in_ep(inp, sa, SCTP_ADDR_NOT_LOCKED);
3211 if (type == SCTP_ADD_IP_ADDRESS) {
3212 sctp_add_local_addr_ep(inp, ifa, type);
3213 } else if (type == SCTP_DEL_IP_ADDRESS) {
3214 if (inp->laddr_count < 2) {
3215 /* can't delete the last local address */
3216 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL);
3219 LIST_FOREACH(laddr, &inp->sctp_addr_list,
3221 if (ifa == laddr->ifa) {
3222 /* Mark in the delete */
3223 laddr->action = type;
3227 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
3229 * There is no need to start the iterator if the inp
3230 * has no associations.
3232 if (type == SCTP_DEL_IP_ADDRESS) {
3233 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3234 if (laddr->ifa == ifa) {
3235 sctp_del_local_addr_ep(inp, ifa);
3240 struct sctp_asconf_iterator *asc;
3241 struct sctp_laddr *wi;
3244 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
3245 sizeof(struct sctp_asconf_iterator),
3248 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM);
3251 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
3253 SCTP_FREE(asc, SCTP_M_ASC_IT);
3254 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM);
3257 LIST_INIT(&asc->list_of_work);
3259 SCTP_INCR_LADDR_COUNT();
3262 atomic_add_int(&ifa->refcount, 1);
3263 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
3264 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
3265 sctp_asconf_iterator_stcb,
3266 sctp_asconf_iterator_ep_end,
3268 SCTP_PCB_ANY_FEATURES,
3269 SCTP_ASOC_ANY_STATE,
3271 sctp_asconf_iterator_end, inp, 0);
3273 SCTP_PRINTF("Failed to initiate iterator for addr_mgmt_ep_sa\n");
3274 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EFAULT);
3275 sctp_asconf_iterator_end(asc, 0);
3281 /* invalid address! */
3282 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EADDRNOTAVAIL);
3283 return (EADDRNOTAVAIL);
3288 sctp_asconf_send_nat_state_update(struct sctp_tcb *stcb,
3289 struct sctp_nets *net)
3291 struct sctp_asconf_addr *aa;
3292 struct sctp_ifa *sctp_ifap;
3293 struct sctp_asconf_tag_param *vtag;
3295 struct sockaddr_in *to;
3298 struct sockaddr_in6 *to6;
3301 SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing net\n");
3305 SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing stcb\n");
3309 * Need to have in the asconf: - vtagparam(my_vtag/peer_vtag) -
3310 * add(0.0.0.0) - del(0.0.0.0) - Any global addresses add(addr)
3312 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3315 /* didn't get memory */
3316 SCTPDBG(SCTP_DEBUG_ASCONF1,
3317 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3320 aa->special_del = 0;
3321 /* fill in asconf address parameter fields */
3322 /* top level elements are "networked" during send */
3324 aa->sent = 0; /* clear sent flag */
3325 vtag = (struct sctp_asconf_tag_param *)&aa->ap.aph;
3326 vtag->aph.ph.param_type = SCTP_NAT_VTAGS;
3327 vtag->aph.ph.param_length = sizeof(struct sctp_asconf_tag_param);
3328 vtag->local_vtag = htonl(stcb->asoc.my_vtag);
3329 vtag->remote_vtag = htonl(stcb->asoc.peer_vtag);
3330 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3332 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3335 /* didn't get memory */
3336 SCTPDBG(SCTP_DEBUG_ASCONF1,
3337 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3340 memset(aa, 0, sizeof(struct sctp_asconf_addr));
3341 /* fill in asconf address parameter fields */
3343 switch (net->ro._l_addr.sa.sa_family) {
3346 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3347 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param);
3348 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
3349 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_param);
3350 /* No need to add an address, we are using 0.0.0.0 */
3351 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3356 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3357 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param);
3358 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
3359 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param);
3360 /* No need to add an address, we are using 0.0.0.0 */
3361 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3365 SCTPDBG(SCTP_DEBUG_ASCONF1,
3366 "sctp_asconf_send_nat_state_update: unknown address family\n");
3367 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
3370 SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa),
3373 /* didn't get memory */
3374 SCTPDBG(SCTP_DEBUG_ASCONF1,
3375 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3378 memset(aa, 0, sizeof(struct sctp_asconf_addr));
3379 /* fill in asconf address parameter fields */
3381 switch (net->ro._l_addr.sa.sa_family) {
3384 aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS;
3385 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param);
3386 aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS;
3387 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_param);
3388 /* No need to add an address, we are using 0.0.0.0 */
3389 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3394 aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS;
3395 aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param);
3396 aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS;
3397 aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param);
3398 /* No need to add an address, we are using 0.0.0.0 */
3399 TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next);
3403 SCTPDBG(SCTP_DEBUG_ASCONF1,
3404 "sctp_asconf_send_nat_state_update: unknown address family\n");
3405 SCTP_FREE(aa, SCTP_M_ASC_ADDR);
3408 /* Now we must hunt the addresses and add all global addresses */
3409 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3410 struct sctp_vrf *vrf = NULL;
3411 struct sctp_ifn *sctp_ifnp;
3414 vrf_id = stcb->sctp_ep->def_vrf_id;
3415 vrf = sctp_find_vrf(vrf_id);
3420 SCTP_IPI_ADDR_RLOCK();
3421 LIST_FOREACH(sctp_ifnp, &vrf->ifnlist, next_ifn) {
3422 LIST_FOREACH(sctp_ifap, &sctp_ifnp->ifalist, next_ifa) {
3423 switch (sctp_ifap->address.sa.sa_family) {
3426 to = &sctp_ifap->address.sin;
3427 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
3428 &to->sin_addr) != 0) {
3431 if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) {
3434 if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) {
3441 to6 = &sctp_ifap->address.sin6;
3442 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
3443 &to6->sin6_addr) != 0) {
3446 if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) {
3449 if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) {
3457 sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS);
3460 SCTP_IPI_ADDR_RUNLOCK();
3462 struct sctp_laddr *laddr;
3464 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
3465 if (laddr->ifa == NULL) {
3468 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED)
3470 * Address being deleted by the system, dont
3474 if (laddr->action == SCTP_DEL_IP_ADDRESS) {
3476 * Address being deleted on this ep don't
3481 sctp_ifap = laddr->ifa;
3482 switch (sctp_ifap->address.sa.sa_family) {
3485 to = &sctp_ifap->address.sin;
3486 if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) {
3489 if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) {
3496 to6 = &sctp_ifap->address.sin6;
3497 if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) {
3500 if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) {
3508 sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS);
3512 /* Now we must send the asconf into the queue */
3513 sctp_send_asconf(stcb, net, SCTP_ADDR_NOT_LOCKED);