2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
37 #include <netinet/sctp_var.h>
38 #include <netinet/sctp_sysctl.h>
39 #include <netinet/sctp_pcb.h>
40 #include <netinet/sctp_header.h>
41 #include <netinet/sctputil.h>
42 #include <netinet/sctp_output.h>
43 #include <netinet/sctp_asconf.h>
44 #include <netinet/sctp_timer.h>
48 * SCTP_DEBUG_ASCONF1: protocol info, general info and errors
49 * SCTP_DEBUG_ASCONF2: detailed info
56 * An ASCONF parameter queue exists per asoc which holds the pending address
57 * operations. Lists are updated upon receipt of ASCONF-ACK.
59 * A restricted_addrs list exists per assoc to hold local addresses that are
60 * not (yet) usable by the assoc as a source address. These addresses are
61 * either pending an ASCONF operation (and exist on the ASCONF parameter
62 * queue), or they are permanently restricted (the peer has returned an
63 * ERROR indication to an ASCONF(ADD), or the peer does not support ASCONF).
65 * Deleted addresses are always immediately removed from the lists as they will
66 * (shortly) no longer exist in the kernel. We send ASCONFs as a courtesy,
71 * ASCONF parameter processing.
72 * response_required: set if a reply is required (eg. SUCCESS_REPORT).
73 * returns a mbuf to an "error" response parameter or NULL/"success" if ok.
74 * FIX: allocating this many mbufs on the fly is pretty inefficient...
77 sctp_asconf_success_response(uint32_t id
)
79 struct mbuf
*m_reply
= NULL
;
80 struct sctp_asconf_paramhdr
*aph
;
82 m_reply
= sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_paramhdr
),
83 0, M_NOWAIT
, 1, MT_DATA
);
84 if (m_reply
== NULL
) {
85 SCTPDBG(SCTP_DEBUG_ASCONF1
,
86 "asconf_success_response: couldn't get mbuf!\n");
89 aph
= mtod(m_reply
, struct sctp_asconf_paramhdr
*);
90 aph
->correlation_id
= id
;
91 aph
->ph
.param_type
= htons(SCTP_SUCCESS_REPORT
);
92 aph
->ph
.param_length
= sizeof(struct sctp_asconf_paramhdr
);
93 SCTP_BUF_LEN(m_reply
) = aph
->ph
.param_length
;
94 aph
->ph
.param_length
= htons(aph
->ph
.param_length
);
100 sctp_asconf_error_response(uint32_t id
, uint16_t cause
, uint8_t * error_tlv
,
103 struct mbuf
*m_reply
= NULL
;
104 struct sctp_asconf_paramhdr
*aph
;
105 struct sctp_error_cause
*error
;
108 m_reply
= sctp_get_mbuf_for_msg((sizeof(struct sctp_asconf_paramhdr
) +
110 sizeof(struct sctp_error_cause
)),
111 0, M_NOWAIT
, 1, MT_DATA
);
112 if (m_reply
== NULL
) {
113 SCTPDBG(SCTP_DEBUG_ASCONF1
,
114 "asconf_error_response: couldn't get mbuf!\n");
117 aph
= mtod(m_reply
, struct sctp_asconf_paramhdr
*);
118 error
= (struct sctp_error_cause
*)(aph
+ 1);
120 aph
->correlation_id
= id
;
121 aph
->ph
.param_type
= htons(SCTP_ERROR_CAUSE_IND
);
122 error
->code
= htons(cause
);
123 error
->length
= tlv_length
+ sizeof(struct sctp_error_cause
);
124 aph
->ph
.param_length
= error
->length
+
125 sizeof(struct sctp_asconf_paramhdr
);
127 if (aph
->ph
.param_length
> MLEN
) {
128 SCTPDBG(SCTP_DEBUG_ASCONF1
,
129 "asconf_error_response: tlv_length (%xh) too big\n",
131 sctp_m_freem(m_reply
); /* discard */
134 if (error_tlv
!= NULL
) {
135 tlv
= (uint8_t *) (error
+ 1);
136 memcpy(tlv
, error_tlv
, tlv_length
);
138 SCTP_BUF_LEN(m_reply
) = aph
->ph
.param_length
;
139 error
->length
= htons(error
->length
);
140 aph
->ph
.param_length
= htons(aph
->ph
.param_length
);
146 sctp_process_asconf_add_ip(struct sockaddr
*src
, struct sctp_asconf_paramhdr
*aph
,
147 struct sctp_tcb
*stcb
, int send_hb
, int response_required
)
149 struct sctp_nets
*net
;
150 struct mbuf
*m_reply
= NULL
;
151 union sctp_sockstore store
;
152 struct sctp_paramhdr
*ph
;
153 uint16_t param_type
, aparam_length
;
155 #if defined(INET) || defined(INET6)
156 uint16_t param_length
;
160 int zero_address
= 0;
164 struct sockaddr_in
*sin
;
165 struct sctp_ipv4addr_param
*v4addr
;
169 struct sockaddr_in6
*sin6
;
170 struct sctp_ipv6addr_param
*v6addr
;
174 aparam_length
= ntohs(aph
->ph
.param_length
);
175 ph
= (struct sctp_paramhdr
*)(aph
+ 1);
176 param_type
= ntohs(ph
->param_type
);
177 #if defined(INET) || defined(INET6)
178 param_length
= ntohs(ph
->param_length
);
181 switch (param_type
) {
183 case SCTP_IPV4_ADDRESS
:
184 if (param_length
!= sizeof(struct sctp_ipv4addr_param
)) {
185 /* invalid param size */
188 v4addr
= (struct sctp_ipv4addr_param
*)ph
;
190 bzero(sin
, sizeof(*sin
));
191 sin
->sin_family
= AF_INET
;
192 sin
->sin_len
= sizeof(struct sockaddr_in
);
193 sin
->sin_port
= stcb
->rport
;
194 sin
->sin_addr
.s_addr
= v4addr
->addr
;
195 if ((sin
->sin_addr
.s_addr
== INADDR_BROADCAST
) ||
196 IN_MULTICAST(ntohl(sin
->sin_addr
.s_addr
))) {
199 if (sin
->sin_addr
.s_addr
== INADDR_ANY
)
201 SCTPDBG(SCTP_DEBUG_ASCONF1
, "process_asconf_add_ip: adding ");
202 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, sa
);
206 case SCTP_IPV6_ADDRESS
:
207 if (param_length
!= sizeof(struct sctp_ipv6addr_param
)) {
208 /* invalid param size */
211 v6addr
= (struct sctp_ipv6addr_param
*)ph
;
213 bzero(sin6
, sizeof(*sin6
));
214 sin6
->sin6_family
= AF_INET6
;
215 sin6
->sin6_len
= sizeof(struct sockaddr_in6
);
216 sin6
->sin6_port
= stcb
->rport
;
217 memcpy((caddr_t
)&sin6
->sin6_addr
, v6addr
->addr
,
218 sizeof(struct in6_addr
));
219 if (IN6_IS_ADDR_MULTICAST(&sin6
->sin6_addr
)) {
222 if (IN6_IS_ADDR_UNSPECIFIED(&sin6
->sin6_addr
))
224 SCTPDBG(SCTP_DEBUG_ASCONF1
, "process_asconf_add_ip: adding ");
225 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, sa
);
229 m_reply
= sctp_asconf_error_response(aph
->correlation_id
,
230 SCTP_CAUSE_INVALID_PARAM
, (uint8_t *) aph
,
235 /* if 0.0.0.0/::0, add the source address instead */
236 if (zero_address
&& SCTP_BASE_SYSCTL(sctp_nat_friendly
)) {
238 SCTPDBG(SCTP_DEBUG_ASCONF1
,
239 "process_asconf_add_ip: using source addr ");
240 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, src
);
242 /* add the address */
244 m_reply
= sctp_asconf_error_response(aph
->correlation_id
,
245 SCTP_CAUSE_INVALID_PARAM
, (uint8_t *) aph
,
247 } else if (sctp_add_remote_addr(stcb
, sa
, &net
, stcb
->asoc
.port
,
249 SCTP_ADDR_DYNAMIC_ADDED
) != 0) {
250 SCTPDBG(SCTP_DEBUG_ASCONF1
,
251 "process_asconf_add_ip: error adding address\n");
252 m_reply
= sctp_asconf_error_response(aph
->correlation_id
,
253 SCTP_CAUSE_RESOURCE_SHORTAGE
, (uint8_t *) aph
,
256 /* notify upper layer */
257 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_ADD_IP
, stcb
, 0, sa
, SCTP_SO_NOT_LOCKED
);
258 if (response_required
) {
260 sctp_asconf_success_response(aph
->correlation_id
);
262 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE
, stcb
->sctp_ep
, stcb
, net
);
263 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT
, stcb
->sctp_ep
,
266 sctp_send_hb(stcb
, net
, SCTP_SO_NOT_LOCKED
);
273 sctp_asconf_del_remote_addrs_except(struct sctp_tcb
*stcb
, struct sockaddr
*src
)
275 struct sctp_nets
*src_net
, *net
;
277 /* make sure the source address exists as a destination net */
278 src_net
= sctp_findnet(stcb
, src
);
279 if (src_net
== NULL
) {
283 /* delete all destination addresses except the source */
284 TAILQ_FOREACH(net
, &stcb
->asoc
.nets
, sctp_next
) {
285 if (net
!= src_net
) {
286 /* delete this address */
287 sctp_remove_net(stcb
, net
);
288 SCTPDBG(SCTP_DEBUG_ASCONF1
,
289 "asconf_del_remote_addrs_except: deleting ");
290 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
,
291 (struct sockaddr
*)&net
->ro
._l_addr
);
292 /* notify upper layer */
293 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP
, stcb
, 0,
294 (struct sockaddr
*)&net
->ro
._l_addr
, SCTP_SO_NOT_LOCKED
);
301 sctp_process_asconf_delete_ip(struct sockaddr
*src
,
302 struct sctp_asconf_paramhdr
*aph
,
303 struct sctp_tcb
*stcb
, int response_required
)
305 struct mbuf
*m_reply
= NULL
;
306 union sctp_sockstore store
;
307 struct sctp_paramhdr
*ph
;
308 uint16_t param_type
, aparam_length
;
310 #if defined(INET) || defined(INET6)
311 uint16_t param_length
;
315 int zero_address
= 0;
319 struct sockaddr_in
*sin
;
320 struct sctp_ipv4addr_param
*v4addr
;
324 struct sockaddr_in6
*sin6
;
325 struct sctp_ipv6addr_param
*v6addr
;
329 aparam_length
= ntohs(aph
->ph
.param_length
);
330 ph
= (struct sctp_paramhdr
*)(aph
+ 1);
331 param_type
= ntohs(ph
->param_type
);
332 #if defined(INET) || defined(INET6)
333 param_length
= ntohs(ph
->param_length
);
336 switch (param_type
) {
338 case SCTP_IPV4_ADDRESS
:
339 if (param_length
!= sizeof(struct sctp_ipv4addr_param
)) {
340 /* invalid param size */
343 v4addr
= (struct sctp_ipv4addr_param
*)ph
;
345 bzero(sin
, sizeof(*sin
));
346 sin
->sin_family
= AF_INET
;
347 sin
->sin_len
= sizeof(struct sockaddr_in
);
348 sin
->sin_port
= stcb
->rport
;
349 sin
->sin_addr
.s_addr
= v4addr
->addr
;
350 if (sin
->sin_addr
.s_addr
== INADDR_ANY
)
352 SCTPDBG(SCTP_DEBUG_ASCONF1
,
353 "process_asconf_delete_ip: deleting ");
354 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, sa
);
358 case SCTP_IPV6_ADDRESS
:
359 if (param_length
!= sizeof(struct sctp_ipv6addr_param
)) {
360 /* invalid param size */
363 v6addr
= (struct sctp_ipv6addr_param
*)ph
;
365 bzero(sin6
, sizeof(*sin6
));
366 sin6
->sin6_family
= AF_INET6
;
367 sin6
->sin6_len
= sizeof(struct sockaddr_in6
);
368 sin6
->sin6_port
= stcb
->rport
;
369 memcpy(&sin6
->sin6_addr
, v6addr
->addr
,
370 sizeof(struct in6_addr
));
371 if (IN6_IS_ADDR_UNSPECIFIED(&sin6
->sin6_addr
))
373 SCTPDBG(SCTP_DEBUG_ASCONF1
,
374 "process_asconf_delete_ip: deleting ");
375 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, sa
);
379 m_reply
= sctp_asconf_error_response(aph
->correlation_id
,
380 SCTP_CAUSE_UNRESOLVABLE_ADDR
, (uint8_t *) aph
,
385 /* make sure the source address is not being deleted */
386 if (sctp_cmpaddr(sa
, src
)) {
387 /* trying to delete the source address! */
388 SCTPDBG(SCTP_DEBUG_ASCONF1
, "process_asconf_delete_ip: tried to delete source addr\n");
389 m_reply
= sctp_asconf_error_response(aph
->correlation_id
,
390 SCTP_CAUSE_DELETING_SRC_ADDR
, (uint8_t *) aph
,
394 /* if deleting 0.0.0.0/::0, delete all addresses except src addr */
395 if (zero_address
&& SCTP_BASE_SYSCTL(sctp_nat_friendly
)) {
396 result
= sctp_asconf_del_remote_addrs_except(stcb
, src
);
399 /* src address did not exist? */
400 SCTPDBG(SCTP_DEBUG_ASCONF1
, "process_asconf_delete_ip: src addr does not exist?\n");
401 /* what error to reply with?? */
403 sctp_asconf_error_response(aph
->correlation_id
,
404 SCTP_CAUSE_REQUEST_REFUSED
, (uint8_t *) aph
,
406 } else if (response_required
) {
408 sctp_asconf_success_response(aph
->correlation_id
);
412 /* delete the address */
413 result
= sctp_del_remote_addr(stcb
, sa
);
415 * note if result == -2, the address doesn't exist in the asoc but
416 * since it's being deleted anyways, we just ack the delete -- but
417 * this probably means something has already gone awry
420 /* only one address in the asoc */
421 SCTPDBG(SCTP_DEBUG_ASCONF1
, "process_asconf_delete_ip: tried to delete last IP addr!\n");
422 m_reply
= sctp_asconf_error_response(aph
->correlation_id
,
423 SCTP_CAUSE_DELETING_LAST_ADDR
, (uint8_t *) aph
,
426 if (response_required
) {
427 m_reply
= sctp_asconf_success_response(aph
->correlation_id
);
429 /* notify upper layer */
430 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP
, stcb
, 0, sa
, SCTP_SO_NOT_LOCKED
);
436 sctp_process_asconf_set_primary(struct sockaddr
*src
,
437 struct sctp_asconf_paramhdr
*aph
,
438 struct sctp_tcb
*stcb
, int response_required
)
440 struct mbuf
*m_reply
= NULL
;
441 union sctp_sockstore store
;
442 struct sctp_paramhdr
*ph
;
443 uint16_t param_type
, aparam_length
;
445 #if defined(INET) || defined(INET6)
446 uint16_t param_length
;
450 int zero_address
= 0;
453 struct sockaddr_in
*sin
;
454 struct sctp_ipv4addr_param
*v4addr
;
458 struct sockaddr_in6
*sin6
;
459 struct sctp_ipv6addr_param
*v6addr
;
463 aparam_length
= ntohs(aph
->ph
.param_length
);
464 ph
= (struct sctp_paramhdr
*)(aph
+ 1);
465 param_type
= ntohs(ph
->param_type
);
466 #if defined(INET) || defined(INET6)
467 param_length
= ntohs(ph
->param_length
);
470 switch (param_type
) {
472 case SCTP_IPV4_ADDRESS
:
473 if (param_length
!= sizeof(struct sctp_ipv4addr_param
)) {
474 /* invalid param size */
477 v4addr
= (struct sctp_ipv4addr_param
*)ph
;
479 bzero(sin
, sizeof(*sin
));
480 sin
->sin_family
= AF_INET
;
481 sin
->sin_len
= sizeof(struct sockaddr_in
);
482 sin
->sin_addr
.s_addr
= v4addr
->addr
;
483 if (sin
->sin_addr
.s_addr
== INADDR_ANY
)
485 SCTPDBG(SCTP_DEBUG_ASCONF1
, "process_asconf_set_primary: ");
486 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, sa
);
490 case SCTP_IPV6_ADDRESS
:
491 if (param_length
!= sizeof(struct sctp_ipv6addr_param
)) {
492 /* invalid param size */
495 v6addr
= (struct sctp_ipv6addr_param
*)ph
;
497 bzero(sin6
, sizeof(*sin6
));
498 sin6
->sin6_family
= AF_INET6
;
499 sin6
->sin6_len
= sizeof(struct sockaddr_in6
);
500 memcpy((caddr_t
)&sin6
->sin6_addr
, v6addr
->addr
,
501 sizeof(struct in6_addr
));
502 if (IN6_IS_ADDR_UNSPECIFIED(&sin6
->sin6_addr
))
504 SCTPDBG(SCTP_DEBUG_ASCONF1
, "process_asconf_set_primary: ");
505 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, sa
);
509 m_reply
= sctp_asconf_error_response(aph
->correlation_id
,
510 SCTP_CAUSE_UNRESOLVABLE_ADDR
, (uint8_t *) aph
,
515 /* if 0.0.0.0/::0, use the source address instead */
516 if (zero_address
&& SCTP_BASE_SYSCTL(sctp_nat_friendly
)) {
518 SCTPDBG(SCTP_DEBUG_ASCONF1
,
519 "process_asconf_set_primary: using source addr ");
520 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, src
);
522 /* set the primary address */
523 if (sctp_set_primary_addr(stcb
, sa
, NULL
) == 0) {
524 SCTPDBG(SCTP_DEBUG_ASCONF1
,
525 "process_asconf_set_primary: primary address set\n");
526 /* notify upper layer */
527 sctp_ulp_notify(SCTP_NOTIFY_ASCONF_SET_PRIMARY
, stcb
, 0, sa
, SCTP_SO_NOT_LOCKED
);
528 if ((stcb
->asoc
.primary_destination
->dest_state
& SCTP_ADDR_REACHABLE
) &&
529 (!(stcb
->asoc
.primary_destination
->dest_state
& SCTP_ADDR_PF
)) &&
530 (stcb
->asoc
.alternate
)) {
531 sctp_free_remote_addr(stcb
->asoc
.alternate
);
532 stcb
->asoc
.alternate
= NULL
;
534 if (response_required
) {
535 m_reply
= sctp_asconf_success_response(aph
->correlation_id
);
538 * Mobility adaptation. Ideally, when the reception of SET
539 * PRIMARY with DELETE IP ADDRESS of the previous primary
540 * destination, unacknowledged DATA are retransmitted
541 * immediately to the new primary destination for seamless
542 * handover. If the destination is UNCONFIRMED and marked to
543 * REQ_PRIM, The retransmission occur when reception of the
544 * HEARTBEAT-ACK. (See sctp_handle_heartbeat_ack in
545 * sctp_input.c) Also, when change of the primary
546 * destination, it is better that all subsequent new DATA
547 * containing already queued DATA are transmitted to the new
548 * primary destination. (by micchie)
550 if ((sctp_is_mobility_feature_on(stcb
->sctp_ep
,
551 SCTP_MOBILITY_BASE
) ||
552 sctp_is_mobility_feature_on(stcb
->sctp_ep
,
553 SCTP_MOBILITY_FASTHANDOFF
)) &&
554 sctp_is_mobility_feature_on(stcb
->sctp_ep
,
555 SCTP_MOBILITY_PRIM_DELETED
) &&
556 (stcb
->asoc
.primary_destination
->dest_state
&
557 SCTP_ADDR_UNCONFIRMED
) == 0) {
559 sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED
,
560 stcb
->sctp_ep
, stcb
, NULL
,
561 SCTP_FROM_SCTP_ASCONF
+ SCTP_LOC_1
);
562 if (sctp_is_mobility_feature_on(stcb
->sctp_ep
,
563 SCTP_MOBILITY_FASTHANDOFF
)) {
564 sctp_assoc_immediate_retrans(stcb
,
565 stcb
->asoc
.primary_destination
);
567 if (sctp_is_mobility_feature_on(stcb
->sctp_ep
,
568 SCTP_MOBILITY_BASE
)) {
569 sctp_move_chunks_from_net(stcb
,
570 stcb
->asoc
.deleted_primary
);
572 sctp_delete_prim_timer(stcb
->sctp_ep
, stcb
,
573 stcb
->asoc
.deleted_primary
);
576 /* couldn't set the requested primary address! */
577 SCTPDBG(SCTP_DEBUG_ASCONF1
,
578 "process_asconf_set_primary: set primary failed!\n");
579 /* must have been an invalid address, so report */
580 m_reply
= sctp_asconf_error_response(aph
->correlation_id
,
581 SCTP_CAUSE_UNRESOLVABLE_ADDR
, (uint8_t *) aph
,
589 * handles an ASCONF chunk.
590 * if all parameters are processed ok, send a plain (empty) ASCONF-ACK
593 sctp_handle_asconf(struct mbuf
*m
, unsigned int offset
,
594 struct sockaddr
*src
,
595 struct sctp_asconf_chunk
*cp
, struct sctp_tcb
*stcb
,
598 struct sctp_association
*asoc
;
600 struct mbuf
*n
, *m_ack
, *m_result
, *m_tail
;
601 struct sctp_asconf_ack_chunk
*ack_cp
;
602 struct sctp_asconf_paramhdr
*aph
;
603 struct sctp_ipv6addr_param
*p_addr
;
604 unsigned int asconf_limit
, cnt
;
605 int error
= 0; /* did an error occur? */
607 /* asconf param buffer */
608 uint8_t aparam_buf
[SCTP_PARAM_BUFFER_SIZE
];
609 struct sctp_asconf_ack
*ack
, *ack_next
;
611 /* verify minimum length */
612 if (ntohs(cp
->ch
.chunk_length
) < sizeof(struct sctp_asconf_chunk
)) {
613 SCTPDBG(SCTP_DEBUG_ASCONF1
,
614 "handle_asconf: chunk too small = %xh\n",
615 ntohs(cp
->ch
.chunk_length
));
619 serial_num
= ntohl(cp
->serial_number
);
621 if (SCTP_TSN_GE(asoc
->asconf_seq_in
, serial_num
)) {
622 /* got a duplicate ASCONF */
623 SCTPDBG(SCTP_DEBUG_ASCONF1
,
624 "handle_asconf: got duplicate serial number = %xh\n",
627 } else if (serial_num
!= (asoc
->asconf_seq_in
+ 1)) {
628 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: incorrect serial number = %xh (expected next = %xh)\n",
629 serial_num
, asoc
->asconf_seq_in
+ 1);
632 /* it's the expected "next" sequence number, so process it */
633 asoc
->asconf_seq_in
= serial_num
; /* update sequence */
634 /* get length of all the param's in the ASCONF */
635 asconf_limit
= offset
+ ntohs(cp
->ch
.chunk_length
);
636 SCTPDBG(SCTP_DEBUG_ASCONF1
,
637 "handle_asconf: asconf_limit=%u, sequence=%xh\n",
638 asconf_limit
, serial_num
);
641 /* delete old cache */
642 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: Now processing first ASCONF. Try to delete old cache\n");
644 TAILQ_FOREACH_SAFE(ack
, &asoc
->asconf_ack_sent
, next
, ack_next
) {
645 if (ack
->serial_number
== serial_num
)
647 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: delete old(%u) < first(%u)\n",
648 ack
->serial_number
, serial_num
);
649 TAILQ_REMOVE(&asoc
->asconf_ack_sent
, ack
, next
);
650 if (ack
->data
!= NULL
) {
651 sctp_m_freem(ack
->data
);
653 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack
), ack
);
656 m_ack
= sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_ack_chunk
), 0,
657 M_NOWAIT
, 1, MT_DATA
);
659 SCTPDBG(SCTP_DEBUG_ASCONF1
,
660 "handle_asconf: couldn't get mbuf!\n");
663 m_tail
= m_ack
; /* current reply chain's tail */
665 /* fill in ASCONF-ACK header */
666 ack_cp
= mtod(m_ack
, struct sctp_asconf_ack_chunk
*);
667 ack_cp
->ch
.chunk_type
= SCTP_ASCONF_ACK
;
668 ack_cp
->ch
.chunk_flags
= 0;
669 ack_cp
->serial_number
= htonl(serial_num
);
670 /* set initial lengths (eg. just an ASCONF-ACK), ntohx at the end! */
671 SCTP_BUF_LEN(m_ack
) = sizeof(struct sctp_asconf_ack_chunk
);
672 ack_cp
->ch
.chunk_length
= sizeof(struct sctp_asconf_ack_chunk
);
674 /* skip the lookup address parameter */
675 offset
+= sizeof(struct sctp_asconf_chunk
);
676 p_addr
= (struct sctp_ipv6addr_param
*)sctp_m_getptr(m
, offset
, sizeof(struct sctp_paramhdr
), (uint8_t *) & aparam_buf
);
677 if (p_addr
== NULL
) {
678 SCTPDBG(SCTP_DEBUG_ASCONF1
,
679 "handle_asconf: couldn't get lookup addr!\n");
680 /* respond with a missing/invalid mandatory parameter error */
683 /* param_length is already validated in process_control... */
684 offset
+= ntohs(p_addr
->ph
.param_length
); /* skip lookup addr */
685 /* get pointer to first asconf param in ASCONF */
686 aph
= (struct sctp_asconf_paramhdr
*)sctp_m_getptr(m
, offset
, sizeof(struct sctp_asconf_paramhdr
), (uint8_t *) & aparam_buf
);
688 SCTPDBG(SCTP_DEBUG_ASCONF1
, "Empty ASCONF received?\n");
691 /* process through all parameters */
693 while (aph
!= NULL
) {
694 unsigned int param_length
, param_type
;
696 param_type
= ntohs(aph
->ph
.param_type
);
697 param_length
= ntohs(aph
->ph
.param_length
);
698 if (offset
+ param_length
> asconf_limit
) {
699 /* parameter goes beyond end of chunk! */
705 if (param_length
> sizeof(aparam_buf
)) {
706 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: param length (%u) larger than buffer size!\n", param_length
);
710 if (param_length
<= sizeof(struct sctp_paramhdr
)) {
711 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: param length (%u) too short\n", param_length
);
714 /* get the entire parameter */
715 aph
= (struct sctp_asconf_paramhdr
*)sctp_m_getptr(m
, offset
, param_length
, aparam_buf
);
717 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: couldn't get entire param\n");
721 switch (param_type
) {
722 case SCTP_ADD_IP_ADDRESS
:
723 m_result
= sctp_process_asconf_add_ip(src
, aph
, stcb
,
724 (cnt
< SCTP_BASE_SYSCTL(sctp_hb_maxburst
)), error
);
727 case SCTP_DEL_IP_ADDRESS
:
728 m_result
= sctp_process_asconf_delete_ip(src
, aph
, stcb
,
731 case SCTP_ERROR_CAUSE_IND
:
732 /* not valid in an ASCONF chunk */
734 case SCTP_SET_PRIM_ADDR
:
735 m_result
= sctp_process_asconf_set_primary(src
, aph
,
739 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: sees a NAT VTAG state parameter\n");
741 case SCTP_SUCCESS_REPORT
:
742 /* not valid in an ASCONF chunk */
744 case SCTP_ULP_ADAPTATION
:
748 if ((param_type
& 0x8000) == 0) {
749 /* Been told to STOP at this param */
750 asconf_limit
= offset
;
752 * FIX FIX - We need to call
753 * sctp_arethere_unrecognized_parameters()
754 * to get a operr and send it for any
755 * param's with the 0x4000 bit set OR do it
756 * here ourselves... note we still must STOP
757 * if the 0x8000 bit is clear.
760 /* unknown/invalid param type */
764 /* add any (error) result to the reply mbuf chain */
765 if (m_result
!= NULL
) {
766 SCTP_BUF_NEXT(m_tail
) = m_result
;
768 /* update lengths, make sure it's aligned too */
769 SCTP_BUF_LEN(m_result
) = SCTP_SIZE32(SCTP_BUF_LEN(m_result
));
770 ack_cp
->ch
.chunk_length
+= SCTP_BUF_LEN(m_result
);
771 /* set flag to force success reports */
774 offset
+= SCTP_SIZE32(param_length
);
775 /* update remaining ASCONF message length to process */
776 if (offset
>= asconf_limit
) {
777 /* no more data in the mbuf chain */
780 /* get pointer to next asconf param */
781 aph
= (struct sctp_asconf_paramhdr
*)sctp_m_getptr(m
, offset
,
782 sizeof(struct sctp_asconf_paramhdr
),
783 (uint8_t *) & aparam_buf
);
785 /* can't get an asconf paramhdr */
786 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: can't get asconf param hdr!\n");
787 /* FIX ME - add error here... */
792 ack_cp
->ch
.chunk_length
= htons(ack_cp
->ch
.chunk_length
);
793 /* save the ASCONF-ACK reply */
794 ack
= SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asconf_ack
),
795 struct sctp_asconf_ack
);
800 ack
->serial_number
= serial_num
;
801 ack
->last_sent_to
= NULL
;
804 for (n
= m_ack
; n
!= NULL
; n
= SCTP_BUF_NEXT(n
)) {
805 ack
->len
+= SCTP_BUF_LEN(n
);
807 TAILQ_INSERT_TAIL(&stcb
->asoc
.asconf_ack_sent
, ack
, next
);
809 /* see if last_control_chunk_from is set properly (use IP src addr) */
810 if (stcb
->asoc
.last_control_chunk_from
== NULL
) {
812 * this could happen if the source address was just newly
815 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: looking up net for IP source address\n");
816 SCTPDBG(SCTP_DEBUG_ASCONF1
, "Looking for IP source: ");
817 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, src
);
818 /* look up the from address */
819 stcb
->asoc
.last_control_chunk_from
= sctp_findnet(stcb
, src
);
821 if (stcb
->asoc
.last_control_chunk_from
== NULL
) {
822 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf: IP source address not found?!\n");
829 * does the address match? returns 0 if not, 1 if so
832 sctp_asconf_addr_match(struct sctp_asconf_addr
*aa
, struct sockaddr
*sa
)
834 switch (sa
->sa_family
) {
839 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)sa
;
841 if ((aa
->ap
.addrp
.ph
.param_type
== SCTP_IPV6_ADDRESS
) &&
842 (memcmp(&aa
->ap
.addrp
.addr
, &sin6
->sin6_addr
,
843 sizeof(struct in6_addr
)) == 0)) {
852 struct sockaddr_in
*sin
= (struct sockaddr_in
*)sa
;
854 if ((aa
->ap
.addrp
.ph
.param_type
== SCTP_IPV4_ADDRESS
) &&
855 (memcmp(&aa
->ap
.addrp
.addr
, &sin
->sin_addr
,
856 sizeof(struct in_addr
)) == 0)) {
869 * does the address match? returns 0 if not, 1 if so
872 sctp_addr_match(struct sctp_paramhdr
*ph
, struct sockaddr
*sa
)
874 #if defined(INET) || defined(INET6)
875 uint16_t param_type
, param_length
;
877 param_type
= ntohs(ph
->param_type
);
878 param_length
= ntohs(ph
->param_length
);
880 switch (sa
->sa_family
) {
885 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)sa
;
886 struct sctp_ipv6addr_param
*v6addr
;
888 v6addr
= (struct sctp_ipv6addr_param
*)ph
;
889 if ((param_type
== SCTP_IPV6_ADDRESS
) &&
890 (param_length
== sizeof(struct sctp_ipv6addr_param
)) &&
891 (memcmp(&v6addr
->addr
, &sin6
->sin6_addr
,
892 sizeof(struct in6_addr
)) == 0)) {
901 struct sockaddr_in
*sin
= (struct sockaddr_in
*)sa
;
902 struct sctp_ipv4addr_param
*v4addr
;
904 v4addr
= (struct sctp_ipv4addr_param
*)ph
;
905 if ((param_type
== SCTP_IPV4_ADDRESS
) &&
906 (param_length
== sizeof(struct sctp_ipv4addr_param
)) &&
907 (memcmp(&v4addr
->addr
, &sin
->sin_addr
,
908 sizeof(struct in_addr
)) == 0)) {
921 * Cleanup for non-responded/OP ERR'd ASCONF
924 sctp_asconf_cleanup(struct sctp_tcb
*stcb
, struct sctp_nets
*net
)
927 * clear out any existing asconfs going out
929 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF
, stcb
->sctp_ep
, stcb
, net
,
930 SCTP_FROM_SCTP_ASCONF
+ SCTP_LOC_2
);
931 stcb
->asoc
.asconf_seq_out_acked
= stcb
->asoc
.asconf_seq_out
;
932 /* remove the old ASCONF on our outbound queue */
933 sctp_toss_old_asconf(stcb
);
937 * cleanup any cached source addresses that may be topologically
938 * incorrect after a new address has been added to this interface.
941 sctp_asconf_nets_cleanup(struct sctp_tcb
*stcb
, struct sctp_ifn
*ifn
)
943 struct sctp_nets
*net
;
946 * Ideally, we want to only clear cached routes and source addresses
947 * that are topologically incorrect. But since there is no easy way
948 * to know whether the newly added address on the ifn would cause a
949 * routing change (i.e. a new egress interface would be chosen)
950 * without doing a new routing lookup and source address selection,
951 * we will (for now) just flush any cached route using a different
952 * ifn (and cached source addrs) and let output re-choose them
953 * during the next send on that net.
955 TAILQ_FOREACH(net
, &stcb
->asoc
.nets
, sctp_next
) {
957 * clear any cached route (and cached source address) if the
958 * route's interface is NOT the same as the address change.
959 * If it's the same interface, just clear the cached source
962 if (SCTP_ROUTE_HAS_VALID_IFN(&net
->ro
) &&
964 (SCTP_GET_IF_INDEX_FROM_ROUTE(&net
->ro
) != ifn
->ifn_index
))) {
965 /* clear any cached route */
966 RTFREE(net
->ro
.ro_rt
);
967 net
->ro
.ro_rt
= NULL
;
969 /* clear any cached source address */
970 if (net
->src_addr_selected
) {
971 sctp_free_ifa(net
->ro
._s_addr
);
972 net
->ro
._s_addr
= NULL
;
973 net
->src_addr_selected
= 0;
980 sctp_assoc_immediate_retrans(struct sctp_tcb
*stcb
, struct sctp_nets
*dstnet
)
984 if (dstnet
->dest_state
& SCTP_ADDR_UNCONFIRMED
) {
987 if (stcb
->asoc
.deleted_primary
== NULL
) {
990 if (!TAILQ_EMPTY(&stcb
->asoc
.sent_queue
)) {
991 SCTPDBG(SCTP_DEBUG_ASCONF1
, "assoc_immediate_retrans: Deleted primary is ");
992 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, &stcb
->asoc
.deleted_primary
->ro
._l_addr
.sa
);
993 SCTPDBG(SCTP_DEBUG_ASCONF1
, "Current Primary is ");
994 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, &stcb
->asoc
.primary_destination
->ro
._l_addr
.sa
);
995 sctp_timer_stop(SCTP_TIMER_TYPE_SEND
, stcb
->sctp_ep
, stcb
,
996 stcb
->asoc
.deleted_primary
,
997 SCTP_FROM_SCTP_ASCONF
+ SCTP_LOC_3
);
998 stcb
->asoc
.num_send_timers_up
--;
999 if (stcb
->asoc
.num_send_timers_up
< 0) {
1000 stcb
->asoc
.num_send_timers_up
= 0;
1002 SCTP_TCB_LOCK_ASSERT(stcb
);
1003 error
= sctp_t3rxt_timer(stcb
->sctp_ep
, stcb
,
1004 stcb
->asoc
.deleted_primary
);
1006 SCTP_INP_DECR_REF(stcb
->sctp_ep
);
1009 SCTP_TCB_LOCK_ASSERT(stcb
);
1010 #ifdef SCTP_AUDITING_ENABLED
1011 sctp_auditing(4, stcb
->sctp_ep
, stcb
, stcb
->asoc
.deleted_primary
);
1013 sctp_chunk_output(stcb
->sctp_ep
, stcb
, SCTP_OUTPUT_FROM_T3
, SCTP_SO_NOT_LOCKED
);
1014 if ((stcb
->asoc
.num_send_timers_up
== 0) &&
1015 (stcb
->asoc
.sent_queue_cnt
> 0)) {
1016 struct sctp_tmit_chunk
*chk
;
1018 chk
= TAILQ_FIRST(&stcb
->asoc
.sent_queue
);
1019 sctp_timer_start(SCTP_TIMER_TYPE_SEND
, stcb
->sctp_ep
,
1027 sctp_asconf_queue_mgmt(struct sctp_tcb
*, struct sctp_ifa
*, uint16_t);
1030 sctp_net_immediate_retrans(struct sctp_tcb
*stcb
, struct sctp_nets
*net
)
1032 struct sctp_tmit_chunk
*chk
;
1034 SCTPDBG(SCTP_DEBUG_ASCONF1
, "net_immediate_retrans: RTO is %d\n", net
->RTO
);
1035 sctp_timer_stop(SCTP_TIMER_TYPE_SEND
, stcb
->sctp_ep
, stcb
, net
,
1036 SCTP_FROM_SCTP_ASCONF
+ SCTP_LOC_4
);
1037 stcb
->asoc
.cc_functions
.sctp_set_initial_cc_param(stcb
, net
);
1038 net
->error_count
= 0;
1039 TAILQ_FOREACH(chk
, &stcb
->asoc
.sent_queue
, sctp_next
) {
1040 if (chk
->whoTo
== net
) {
1041 if (chk
->sent
< SCTP_DATAGRAM_RESEND
) {
1042 chk
->sent
= SCTP_DATAGRAM_RESEND
;
1043 sctp_ucount_incr(stcb
->asoc
.sent_queue_retran_cnt
);
1044 sctp_flight_size_decrease(chk
);
1045 sctp_total_flight_decrease(stcb
, chk
);
1046 net
->marked_retrans
++;
1047 stcb
->asoc
.marked_retrans
++;
1051 if (net
->marked_retrans
) {
1052 sctp_chunk_output(stcb
->sctp_ep
, stcb
, SCTP_OUTPUT_FROM_T3
, SCTP_SO_NOT_LOCKED
);
1057 sctp_path_check_and_react(struct sctp_tcb
*stcb
, struct sctp_ifa
*newifa
)
1059 struct sctp_nets
*net
;
1060 int addrnum
, changed
;
1063 * If number of local valid addresses is 1, the valid address is
1064 * probably newly added address. Several valid addresses in this
1065 * association. A source address may not be changed. Additionally,
1066 * they can be configured on a same interface as "alias" addresses.
1069 addrnum
= sctp_local_addr_count(stcb
);
1070 SCTPDBG(SCTP_DEBUG_ASCONF1
, "p_check_react(): %d local addresses\n",
1073 TAILQ_FOREACH(net
, &stcb
->asoc
.nets
, sctp_next
) {
1074 /* clear any cached route and source address */
1075 if (net
->ro
.ro_rt
) {
1076 RTFREE(net
->ro
.ro_rt
);
1077 net
->ro
.ro_rt
= NULL
;
1079 if (net
->src_addr_selected
) {
1080 sctp_free_ifa(net
->ro
._s_addr
);
1081 net
->ro
._s_addr
= NULL
;
1082 net
->src_addr_selected
= 0;
1084 /* Retransmit unacknowledged DATA chunks immediately */
1085 if (sctp_is_mobility_feature_on(stcb
->sctp_ep
,
1086 SCTP_MOBILITY_FASTHANDOFF
)) {
1087 sctp_net_immediate_retrans(stcb
, net
);
1089 /* also, SET PRIMARY is maybe already sent */
1093 /* Multiple local addresses exsist in the association. */
1094 TAILQ_FOREACH(net
, &stcb
->asoc
.nets
, sctp_next
) {
1095 /* clear any cached route and source address */
1096 if (net
->ro
.ro_rt
) {
1097 RTFREE(net
->ro
.ro_rt
);
1098 net
->ro
.ro_rt
= NULL
;
1100 if (net
->src_addr_selected
) {
1101 sctp_free_ifa(net
->ro
._s_addr
);
1102 net
->ro
._s_addr
= NULL
;
1103 net
->src_addr_selected
= 0;
1106 * Check if the nexthop is corresponding to the new address.
1107 * If the new address is corresponding to the current
1108 * nexthop, the path will be changed. If the new address is
1109 * NOT corresponding to the current nexthop, the path will
1112 SCTP_RTALLOC((sctp_route_t
*) & net
->ro
,
1113 stcb
->sctp_ep
->def_vrf_id
,
1114 stcb
->sctp_ep
->fibnum
);
1115 if (net
->ro
.ro_rt
== NULL
)
1119 switch (net
->ro
._l_addr
.sa
.sa_family
) {
1122 if (sctp_v4src_match_nexthop(newifa
, (sctp_route_t
*) & net
->ro
)) {
1129 if (sctp_v6src_match_nexthop(
1130 &newifa
->address
.sin6
, (sctp_route_t
*) & net
->ro
)) {
1139 * if the newly added address does not relate routing
1140 * information, we skip.
1144 /* Retransmit unacknowledged DATA chunks immediately */
1145 if (sctp_is_mobility_feature_on(stcb
->sctp_ep
,
1146 SCTP_MOBILITY_FASTHANDOFF
)) {
1147 sctp_net_immediate_retrans(stcb
, net
);
1149 /* Send SET PRIMARY for this new address */
1150 if (net
== stcb
->asoc
.primary_destination
) {
1151 (void)sctp_asconf_queue_mgmt(stcb
, newifa
,
1152 SCTP_SET_PRIM_ADDR
);
1158 * process an ADD/DELETE IP ack from peer.
1159 * addr: corresponding sctp_ifa to the address being added/deleted.
1160 * type: SCTP_ADD_IP_ADDRESS or SCTP_DEL_IP_ADDRESS.
1161 * flag: 1=success, 0=failure.
1164 sctp_asconf_addr_mgmt_ack(struct sctp_tcb
*stcb
, struct sctp_ifa
*addr
, uint32_t flag
)
1167 * do the necessary asoc list work- if we get a failure indication,
1168 * leave the address on the assoc's restricted list. If we get a
1169 * success indication, remove the address from the restricted list.
1172 * Note: this will only occur for ADD_IP_ADDRESS, since
1173 * DEL_IP_ADDRESS is never actually added to the list...
1176 /* success case, so remove from the restricted list */
1177 sctp_del_local_addr_restricted(stcb
, addr
);
1179 if (sctp_is_mobility_feature_on(stcb
->sctp_ep
,
1180 SCTP_MOBILITY_BASE
) ||
1181 sctp_is_mobility_feature_on(stcb
->sctp_ep
,
1182 SCTP_MOBILITY_FASTHANDOFF
)) {
1183 sctp_path_check_and_react(stcb
, addr
);
1186 /* clear any cached/topologically incorrect source addresses */
1187 sctp_asconf_nets_cleanup(stcb
, addr
->ifn_p
);
1189 /* else, leave it on the list */
1193 * add an asconf add/delete/set primary IP address parameter to the queue.
1194 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1195 * returns 0 if queued, -1 if not queued/removed.
1196 * NOTE: if adding, but a delete for the same address is already scheduled
1197 * (and not yet sent out), simply remove it from queue. Same for deleting
1198 * an address already scheduled for add. If a duplicate operation is found,
1199 * ignore the new one.
1202 sctp_asconf_queue_mgmt(struct sctp_tcb
*stcb
, struct sctp_ifa
*ifa
,
1205 struct sctp_asconf_addr
*aa
, *aa_next
;
1207 /* make sure the request isn't already in the queue */
1208 TAILQ_FOREACH_SAFE(aa
, &stcb
->asoc
.asconf_queue
, next
, aa_next
) {
1209 /* address match? */
1210 if (sctp_asconf_addr_match(aa
, &ifa
->address
.sa
) == 0)
1213 * is the request already in queue but not sent? pass the
1214 * request already sent in order to resolve the following
1215 * case: 1. arrival of ADD, then sent 2. arrival of DEL. we
1216 * can't remove the ADD request already sent 3. arrival of
1219 if (aa
->ap
.aph
.ph
.param_type
== type
&& aa
->sent
== 0) {
1222 /* is the negative request already in queue, and not sent */
1223 if ((aa
->sent
== 0) && (type
== SCTP_ADD_IP_ADDRESS
) &&
1224 (aa
->ap
.aph
.ph
.param_type
== SCTP_DEL_IP_ADDRESS
)) {
1225 /* add requested, delete already queued */
1226 TAILQ_REMOVE(&stcb
->asoc
.asconf_queue
, aa
, next
);
1227 /* remove the ifa from the restricted list */
1228 sctp_del_local_addr_restricted(stcb
, ifa
);
1229 /* free the asconf param */
1230 SCTP_FREE(aa
, SCTP_M_ASC_ADDR
);
1231 SCTPDBG(SCTP_DEBUG_ASCONF2
, "asconf_queue_mgmt: add removes queued entry\n");
1234 if ((aa
->sent
== 0) && (type
== SCTP_DEL_IP_ADDRESS
) &&
1235 (aa
->ap
.aph
.ph
.param_type
== SCTP_ADD_IP_ADDRESS
)) {
1236 /* delete requested, add already queued */
1237 TAILQ_REMOVE(&stcb
->asoc
.asconf_queue
, aa
, next
);
1238 /* remove the aa->ifa from the restricted list */
1239 sctp_del_local_addr_restricted(stcb
, aa
->ifa
);
1240 /* free the asconf param */
1241 SCTP_FREE(aa
, SCTP_M_ASC_ADDR
);
1242 SCTPDBG(SCTP_DEBUG_ASCONF2
, "asconf_queue_mgmt: delete removes queued entry\n");
1247 /* adding new request to the queue */
1248 SCTP_MALLOC(aa
, struct sctp_asconf_addr
*, sizeof(*aa
),
1251 /* didn't get memory */
1252 SCTPDBG(SCTP_DEBUG_ASCONF1
, "asconf_queue_mgmt: failed to get memory!\n");
1255 aa
->special_del
= 0;
1256 /* fill in asconf address parameter fields */
1257 /* top level elements are "networked" during send */
1258 aa
->ap
.aph
.ph
.param_type
= type
;
1260 atomic_add_int(&ifa
->refcount
, 1);
1261 /* correlation_id filled in during send routine later... */
1262 switch (ifa
->address
.sa
.sa_family
) {
1266 struct sockaddr_in6
*sin6
;
1268 sin6
= &ifa
->address
.sin6
;
1269 aa
->ap
.addrp
.ph
.param_type
= SCTP_IPV6_ADDRESS
;
1270 aa
->ap
.addrp
.ph
.param_length
= (sizeof(struct sctp_ipv6addr_param
));
1271 aa
->ap
.aph
.ph
.param_length
= sizeof(struct sctp_asconf_paramhdr
) +
1272 sizeof(struct sctp_ipv6addr_param
);
1273 memcpy(&aa
->ap
.addrp
.addr
, &sin6
->sin6_addr
,
1274 sizeof(struct in6_addr
));
1281 struct sockaddr_in
*sin
;
1283 sin
= &ifa
->address
.sin
;
1284 aa
->ap
.addrp
.ph
.param_type
= SCTP_IPV4_ADDRESS
;
1285 aa
->ap
.addrp
.ph
.param_length
= (sizeof(struct sctp_ipv4addr_param
));
1286 aa
->ap
.aph
.ph
.param_length
= sizeof(struct sctp_asconf_paramhdr
) +
1287 sizeof(struct sctp_ipv4addr_param
);
1288 memcpy(&aa
->ap
.addrp
.addr
, &sin
->sin_addr
,
1289 sizeof(struct in_addr
));
1294 /* invalid family! */
1295 SCTP_FREE(aa
, SCTP_M_ASC_ADDR
);
1299 aa
->sent
= 0; /* clear sent flag */
1301 TAILQ_INSERT_TAIL(&stcb
->asoc
.asconf_queue
, aa
, next
);
1303 if (SCTP_BASE_SYSCTL(sctp_debug_on
) & SCTP_DEBUG_ASCONF2
) {
1304 if (type
== SCTP_ADD_IP_ADDRESS
) {
1305 SCTP_PRINTF("asconf_queue_mgmt: inserted asconf ADD_IP_ADDRESS: ");
1306 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2
, &ifa
->address
.sa
);
1307 } else if (type
== SCTP_DEL_IP_ADDRESS
) {
1308 SCTP_PRINTF("asconf_queue_mgmt: appended asconf DEL_IP_ADDRESS: ");
1309 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2
, &ifa
->address
.sa
);
1311 SCTP_PRINTF("asconf_queue_mgmt: appended asconf SET_PRIM_ADDR: ");
1312 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2
, &ifa
->address
.sa
);
1322 * add an asconf operation for the given ifa and type.
1323 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR.
1324 * returns 0 if completed, -1 if not completed, 1 if immediate send is
1328 sctp_asconf_queue_add(struct sctp_tcb
*stcb
, struct sctp_ifa
*ifa
,
1332 int pending_delete_queued
= 0;
1335 /* see if peer supports ASCONF */
1336 if (stcb
->asoc
.asconf_supported
== 0) {
1340 * if this is deleting the last address from the assoc, mark it as
1343 if ((type
== SCTP_DEL_IP_ADDRESS
) && !stcb
->asoc
.asconf_del_pending
) {
1344 if (stcb
->sctp_ep
->sctp_flags
& SCTP_PCB_FLAGS_BOUNDALL
) {
1345 last
= (sctp_local_addr_count(stcb
) == 0);
1347 last
= (sctp_local_addr_count(stcb
) == 1);
1350 /* set the pending delete info only */
1351 stcb
->asoc
.asconf_del_pending
= 1;
1352 stcb
->asoc
.asconf_addr_del_pending
= ifa
;
1353 atomic_add_int(&ifa
->refcount
, 1);
1354 SCTPDBG(SCTP_DEBUG_ASCONF2
,
1355 "asconf_queue_add: mark delete last address pending\n");
1359 /* queue an asconf parameter */
1360 status
= sctp_asconf_queue_mgmt(stcb
, ifa
, type
);
1363 * if this is an add, and there is a delete also pending (i.e. the
1364 * last local address is being changed), queue the pending delete
1367 if ((type
== SCTP_ADD_IP_ADDRESS
) && stcb
->asoc
.asconf_del_pending
&& (status
== 0)) {
1368 /* queue in the pending delete */
1369 if (sctp_asconf_queue_mgmt(stcb
,
1370 stcb
->asoc
.asconf_addr_del_pending
,
1371 SCTP_DEL_IP_ADDRESS
) == 0) {
1372 SCTPDBG(SCTP_DEBUG_ASCONF2
, "asconf_queue_add: queing pending delete\n");
1373 pending_delete_queued
= 1;
1374 /* clear out the pending delete info */
1375 stcb
->asoc
.asconf_del_pending
= 0;
1376 sctp_free_ifa(stcb
->asoc
.asconf_addr_del_pending
);
1377 stcb
->asoc
.asconf_addr_del_pending
= NULL
;
1380 if (pending_delete_queued
) {
1381 struct sctp_nets
*net
;
1384 * since we know that the only/last address is now being
1385 * changed in this case, reset the cwnd/rto on all nets to
1386 * start as a new address and path. Also clear the error
1387 * counts to give the assoc the best chance to complete the
1390 TAILQ_FOREACH(net
, &stcb
->asoc
.nets
, sctp_next
) {
1391 stcb
->asoc
.cc_functions
.sctp_set_initial_cc_param(stcb
,
1394 net
->error_count
= 0;
1396 stcb
->asoc
.overall_error_count
= 0;
1397 if (SCTP_BASE_SYSCTL(sctp_logging_level
) & SCTP_THRESHOLD_LOGGING
) {
1398 sctp_misc_ints(SCTP_THRESHOLD_CLEAR
,
1399 stcb
->asoc
.overall_error_count
,
1401 SCTP_FROM_SCTP_ASCONF
,
1404 /* queue in an advisory set primary too */
1405 (void)sctp_asconf_queue_mgmt(stcb
, ifa
, SCTP_SET_PRIM_ADDR
);
1406 /* let caller know we should send this out immediately */
1413 * add an asconf delete IP address parameter to the queue by sockaddr and
1414 * possibly with no sctp_ifa available. This is only called by the routine
1415 * that checks the addresses in an INIT-ACK against the current address list.
1416 * returns 0 if completed, non-zero if not completed.
1417 * NOTE: if an add is already scheduled (and not yet sent out), simply
1418 * remove it from queue. If a duplicate operation is found, ignore the
1422 sctp_asconf_queue_sa_delete(struct sctp_tcb
*stcb
, struct sockaddr
*sa
)
1424 struct sctp_ifa
*ifa
;
1425 struct sctp_asconf_addr
*aa
, *aa_next
;
1430 /* see if peer supports ASCONF */
1431 if (stcb
->asoc
.asconf_supported
== 0) {
1434 /* make sure the request isn't already in the queue */
1435 TAILQ_FOREACH_SAFE(aa
, &stcb
->asoc
.asconf_queue
, next
, aa_next
) {
1436 /* address match? */
1437 if (sctp_asconf_addr_match(aa
, sa
) == 0)
1439 /* is the request already in queue (sent or not) */
1440 if (aa
->ap
.aph
.ph
.param_type
== SCTP_DEL_IP_ADDRESS
) {
1443 /* is the negative request already in queue, and not sent */
1446 if (aa
->ap
.aph
.ph
.param_type
== SCTP_ADD_IP_ADDRESS
) {
1447 /* add already queued, so remove existing entry */
1448 TAILQ_REMOVE(&stcb
->asoc
.asconf_queue
, aa
, next
);
1449 sctp_del_local_addr_restricted(stcb
, aa
->ifa
);
1450 /* free the entry */
1451 SCTP_FREE(aa
, SCTP_M_ASC_ADDR
);
1456 /* find any existing ifa-- NOTE ifa CAN be allowed to be NULL */
1457 ifa
= sctp_find_ifa_by_addr(sa
, stcb
->asoc
.vrf_id
, SCTP_ADDR_NOT_LOCKED
);
1459 /* adding new request to the queue */
1460 SCTP_MALLOC(aa
, struct sctp_asconf_addr
*, sizeof(*aa
),
1463 /* didn't get memory */
1464 SCTPDBG(SCTP_DEBUG_ASCONF1
,
1465 "sctp_asconf_queue_sa_delete: failed to get memory!\n");
1468 aa
->special_del
= 0;
1469 /* fill in asconf address parameter fields */
1470 /* top level elements are "networked" during send */
1471 aa
->ap
.aph
.ph
.param_type
= SCTP_DEL_IP_ADDRESS
;
1474 atomic_add_int(&ifa
->refcount
, 1);
1475 /* correlation_id filled in during send routine later... */
1476 switch (sa
->sa_family
) {
1481 struct sockaddr_in6
*sin6
;
1483 sin6
= (struct sockaddr_in6
*)sa
;
1484 aa
->ap
.addrp
.ph
.param_type
= SCTP_IPV6_ADDRESS
;
1485 aa
->ap
.addrp
.ph
.param_length
= (sizeof(struct sctp_ipv6addr_param
));
1486 aa
->ap
.aph
.ph
.param_length
= sizeof(struct sctp_asconf_paramhdr
) + sizeof(struct sctp_ipv6addr_param
);
1487 memcpy(&aa
->ap
.addrp
.addr
, &sin6
->sin6_addr
,
1488 sizeof(struct in6_addr
));
1496 struct sockaddr_in
*sin
= (struct sockaddr_in
*)sa
;
1498 aa
->ap
.addrp
.ph
.param_type
= SCTP_IPV4_ADDRESS
;
1499 aa
->ap
.addrp
.ph
.param_length
= (sizeof(struct sctp_ipv4addr_param
));
1500 aa
->ap
.aph
.ph
.param_length
= sizeof(struct sctp_asconf_paramhdr
) + sizeof(struct sctp_ipv4addr_param
);
1501 memcpy(&aa
->ap
.addrp
.addr
, &sin
->sin_addr
,
1502 sizeof(struct in_addr
));
1507 /* invalid family! */
1508 SCTP_FREE(aa
, SCTP_M_ASC_ADDR
);
1513 aa
->sent
= 0; /* clear sent flag */
1515 /* delete goes to the back of the queue */
1516 TAILQ_INSERT_TAIL(&stcb
->asoc
.asconf_queue
, aa
, next
);
1518 /* sa_ignore MEMLEAK {memory is put on the tailq} */
1523 * find a specific asconf param on our "sent" queue
1525 static struct sctp_asconf_addr
*
1526 sctp_asconf_find_param(struct sctp_tcb
*stcb
, uint32_t correlation_id
)
1528 struct sctp_asconf_addr
*aa
;
1530 TAILQ_FOREACH(aa
, &stcb
->asoc
.asconf_queue
, next
) {
1531 if (aa
->ap
.aph
.correlation_id
== correlation_id
&&
1537 /* didn't find it */
1542 * process an SCTP_ERROR_CAUSE_IND for a ASCONF-ACK parameter and do
1543 * notifications based on the error response
1546 sctp_asconf_process_error(struct sctp_tcb
*stcb SCTP_UNUSED
,
1547 struct sctp_asconf_paramhdr
*aph
)
1549 struct sctp_error_cause
*eh
;
1550 struct sctp_paramhdr
*ph
;
1551 uint16_t param_type
;
1552 uint16_t error_code
;
1554 eh
= (struct sctp_error_cause
*)(aph
+ 1);
1555 ph
= (struct sctp_paramhdr
*)(eh
+ 1);
1556 /* validate lengths */
1557 if (htons(eh
->length
) + sizeof(struct sctp_error_cause
) >
1558 htons(aph
->ph
.param_length
)) {
1559 /* invalid error cause length */
1560 SCTPDBG(SCTP_DEBUG_ASCONF1
,
1561 "asconf_process_error: cause element too long\n");
1564 if (htons(ph
->param_length
) + sizeof(struct sctp_paramhdr
) >
1565 htons(eh
->length
)) {
1566 /* invalid included TLV length */
1567 SCTPDBG(SCTP_DEBUG_ASCONF1
,
1568 "asconf_process_error: included TLV too long\n");
1571 /* which error code ? */
1572 error_code
= ntohs(eh
->code
);
1573 param_type
= ntohs(aph
->ph
.param_type
);
1574 /* FIX: this should go back up the REMOTE_ERROR ULP notify */
1575 switch (error_code
) {
1576 case SCTP_CAUSE_RESOURCE_SHORTAGE
:
1577 /* we allow ourselves to "try again" for this error */
1580 /* peer can't handle it... */
1581 switch (param_type
) {
1582 case SCTP_ADD_IP_ADDRESS
:
1583 case SCTP_DEL_IP_ADDRESS
:
1584 case SCTP_SET_PRIM_ADDR
:
1593 * process an asconf queue param.
1594 * aparam: parameter to process, will be removed from the queue.
1595 * flag: 1=success case, 0=failure case
1598 sctp_asconf_process_param_ack(struct sctp_tcb
*stcb
,
1599 struct sctp_asconf_addr
*aparam
, uint32_t flag
)
1601 uint16_t param_type
;
1603 /* process this param */
1604 param_type
= aparam
->ap
.aph
.ph
.param_type
;
1605 switch (param_type
) {
1606 case SCTP_ADD_IP_ADDRESS
:
1607 SCTPDBG(SCTP_DEBUG_ASCONF1
,
1608 "process_param_ack: added IP address\n");
1609 sctp_asconf_addr_mgmt_ack(stcb
, aparam
->ifa
, flag
);
1611 case SCTP_DEL_IP_ADDRESS
:
1612 SCTPDBG(SCTP_DEBUG_ASCONF1
,
1613 "process_param_ack: deleted IP address\n");
1614 /* nothing really to do... lists already updated */
1616 case SCTP_SET_PRIM_ADDR
:
1617 SCTPDBG(SCTP_DEBUG_ASCONF1
,
1618 "process_param_ack: set primary IP address\n");
1619 /* nothing to do... peer may start using this addr */
1622 /* should NEVER happen */
1626 /* remove the param and free it */
1627 TAILQ_REMOVE(&stcb
->asoc
.asconf_queue
, aparam
, next
);
1629 sctp_free_ifa(aparam
->ifa
);
1630 SCTP_FREE(aparam
, SCTP_M_ASC_ADDR
);
1634 * cleanup from a bad asconf ack parameter
1637 sctp_asconf_ack_clear(struct sctp_tcb
*stcb SCTP_UNUSED
)
1639 /* assume peer doesn't really know how to do asconfs */
1640 /* XXX we could free the pending queue here */
1645 sctp_handle_asconf_ack(struct mbuf
*m
, int offset
,
1646 struct sctp_asconf_ack_chunk
*cp
, struct sctp_tcb
*stcb
,
1647 struct sctp_nets
*net
, int *abort_no_unlock
)
1649 struct sctp_association
*asoc
;
1650 uint32_t serial_num
;
1651 uint16_t ack_length
;
1652 struct sctp_asconf_paramhdr
*aph
;
1653 struct sctp_asconf_addr
*aa
, *aa_next
;
1654 uint32_t last_error_id
= 0; /* last error correlation id */
1656 struct sctp_asconf_addr
*ap
;
1658 /* asconf param buffer */
1659 uint8_t aparam_buf
[SCTP_PARAM_BUFFER_SIZE
];
1661 /* verify minimum length */
1662 if (ntohs(cp
->ch
.chunk_length
) < sizeof(struct sctp_asconf_ack_chunk
)) {
1663 SCTPDBG(SCTP_DEBUG_ASCONF1
,
1664 "handle_asconf_ack: chunk too small = %xh\n",
1665 ntohs(cp
->ch
.chunk_length
));
1669 serial_num
= ntohl(cp
->serial_number
);
1672 * NOTE: we may want to handle this differently- currently, we will
1673 * abort when we get an ack for the expected serial number + 1 (eg.
1674 * we didn't send it), process an ack normally if it is the expected
1675 * serial number, and re-send the previous ack for *ALL* other
1680 * if the serial number is the next expected, but I didn't send it,
1681 * abort the asoc, since someone probably just hijacked us...
1683 if (serial_num
== (asoc
->asconf_seq_out
+ 1)) {
1684 struct mbuf
*op_err
;
1685 char msg
[SCTP_DIAG_INFO_LEN
];
1687 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf_ack: got unexpected next serial number! Aborting asoc!\n");
1688 snprintf(msg
, sizeof(msg
), "Never sent serial number %8.8x",
1690 op_err
= sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION
, msg
);
1691 sctp_abort_an_association(stcb
->sctp_ep
, stcb
, op_err
, SCTP_SO_NOT_LOCKED
);
1692 *abort_no_unlock
= 1;
1695 if (serial_num
!= asoc
->asconf_seq_out_acked
+ 1) {
1696 /* got a duplicate/unexpected ASCONF-ACK */
1697 SCTPDBG(SCTP_DEBUG_ASCONF1
, "handle_asconf_ack: got duplicate/unexpected serial number = %xh (expected = %xh)\n",
1698 serial_num
, asoc
->asconf_seq_out_acked
+ 1);
1701 if (serial_num
== asoc
->asconf_seq_out
- 1) {
1702 /* stop our timer */
1703 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF
, stcb
->sctp_ep
, stcb
, net
,
1704 SCTP_FROM_SCTP_ASCONF
+ SCTP_LOC_5
);
1706 /* process the ASCONF-ACK contents */
1707 ack_length
= ntohs(cp
->ch
.chunk_length
) -
1708 sizeof(struct sctp_asconf_ack_chunk
);
1709 offset
+= sizeof(struct sctp_asconf_ack_chunk
);
1710 /* process through all parameters */
1711 while (ack_length
>= sizeof(struct sctp_asconf_paramhdr
)) {
1712 unsigned int param_length
, param_type
;
1714 /* get pointer to next asconf parameter */
1715 aph
= (struct sctp_asconf_paramhdr
*)sctp_m_getptr(m
, offset
,
1716 sizeof(struct sctp_asconf_paramhdr
), aparam_buf
);
1718 /* can't get an asconf paramhdr */
1719 sctp_asconf_ack_clear(stcb
);
1722 param_type
= ntohs(aph
->ph
.param_type
);
1723 param_length
= ntohs(aph
->ph
.param_length
);
1724 if (param_length
> ack_length
) {
1725 sctp_asconf_ack_clear(stcb
);
1728 if (param_length
< sizeof(struct sctp_paramhdr
)) {
1729 sctp_asconf_ack_clear(stcb
);
1732 /* get the complete parameter... */
1733 if (param_length
> sizeof(aparam_buf
)) {
1734 SCTPDBG(SCTP_DEBUG_ASCONF1
,
1735 "param length (%u) larger than buffer size!\n", param_length
);
1736 sctp_asconf_ack_clear(stcb
);
1739 aph
= (struct sctp_asconf_paramhdr
*)sctp_m_getptr(m
, offset
, param_length
, aparam_buf
);
1741 sctp_asconf_ack_clear(stcb
);
1744 /* correlation_id is transparent to peer, no ntohl needed */
1745 id
= aph
->correlation_id
;
1747 switch (param_type
) {
1748 case SCTP_ERROR_CAUSE_IND
:
1750 /* find the corresponding asconf param in our queue */
1751 ap
= sctp_asconf_find_param(stcb
, id
);
1753 /* hmm... can't find this in our queue! */
1756 /* process the parameter, failed flag */
1757 sctp_asconf_process_param_ack(stcb
, ap
, 0);
1758 /* process the error response */
1759 sctp_asconf_process_error(stcb
, aph
);
1761 case SCTP_SUCCESS_REPORT
:
1762 /* find the corresponding asconf param in our queue */
1763 ap
= sctp_asconf_find_param(stcb
, id
);
1765 /* hmm... can't find this in our queue! */
1768 /* process the parameter, success flag */
1769 sctp_asconf_process_param_ack(stcb
, ap
, 1);
1775 /* update remaining ASCONF-ACK message length to process */
1776 ack_length
-= SCTP_SIZE32(param_length
);
1777 if (ack_length
<= 0) {
1778 /* no more data in the mbuf chain */
1781 offset
+= SCTP_SIZE32(param_length
);
1785 * if there are any "sent" params still on the queue, these are
1786 * implicitly "success", or "failed" (if we got an error back) ...
1787 * so process these appropriately
1789 * we assume that the correlation_id's are monotonically increasing
1790 * beginning from 1 and that we don't have *that* many outstanding
1793 if (last_error_id
== 0)
1794 last_error_id
--;/* set to "max" value */
1795 TAILQ_FOREACH_SAFE(aa
, &stcb
->asoc
.asconf_queue
, next
, aa_next
) {
1796 if (aa
->sent
== 1) {
1798 * implicitly successful or failed if correlation_id
1799 * < last_error_id, then success else, failure
1801 if (aa
->ap
.aph
.correlation_id
< last_error_id
)
1802 sctp_asconf_process_param_ack(stcb
, aa
, 1);
1804 sctp_asconf_process_param_ack(stcb
, aa
, 0);
1807 * since we always process in order (FIFO queue) if
1808 * we reach one that hasn't been sent, the rest
1809 * should not have been sent either. so, we're
1816 /* update the next sequence number to use */
1817 asoc
->asconf_seq_out_acked
++;
1818 /* remove the old ASCONF on our outbound queue */
1819 sctp_toss_old_asconf(stcb
);
1820 if (!TAILQ_EMPTY(&stcb
->asoc
.asconf_queue
)) {
1821 #ifdef SCTP_TIMER_BASED_ASCONF
1822 /* we have more params, so restart our timer */
1823 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF
, stcb
->sctp_ep
,
1826 /* we have more params, so send out more */
1827 sctp_send_asconf(stcb
, net
, SCTP_ADDR_NOT_LOCKED
);
1834 sctp_is_scopeid_in_nets(struct sctp_tcb
*stcb
, struct sockaddr
*sa
)
1836 struct sockaddr_in6
*sin6
, *net6
;
1837 struct sctp_nets
*net
;
1839 if (sa
->sa_family
!= AF_INET6
) {
1843 sin6
= (struct sockaddr_in6
*)sa
;
1844 if (IN6_IS_ADDR_LINKLOCAL(&sin6
->sin6_addr
) == 0) {
1845 /* not link local address */
1848 /* hunt through our destination nets list for this scope_id */
1849 TAILQ_FOREACH(net
, &stcb
->asoc
.nets
, sctp_next
) {
1850 if (((struct sockaddr
*)(&net
->ro
._l_addr
))->sa_family
!=
1853 net6
= (struct sockaddr_in6
*)&net
->ro
._l_addr
;
1854 if (IN6_IS_ADDR_LINKLOCAL(&net6
->sin6_addr
) == 0)
1856 if (sctp_is_same_scope(sin6
, net6
)) {
1861 /* didn't find one */
1868 * address management functions
1871 sctp_addr_mgmt_assoc(struct sctp_inpcb
*inp
, struct sctp_tcb
*stcb
,
1872 struct sctp_ifa
*ifa
, uint16_t type
, int addr_locked
)
1876 if ((inp
->sctp_flags
& SCTP_PCB_FLAGS_BOUNDALL
) == 0 ||
1877 sctp_is_feature_off(inp
, SCTP_PCB_FLAGS_DO_ASCONF
)) {
1878 /* subset bound, no ASCONF allowed case, so ignore */
1882 * note: we know this is not the subset bound, no ASCONF case eg.
1883 * this is boundall or subset bound w/ASCONF allowed
1886 /* first, make sure that the address is IPv4 or IPv6 and not jailed */
1887 switch (ifa
->address
.sa
.sa_family
) {
1890 if (prison_check_ip6(inp
->ip_inp
.inp
.inp_cred
,
1891 &ifa
->address
.sin6
.sin6_addr
) != 0) {
1898 if (prison_check_ip4(inp
->ip_inp
.inp
.inp_cred
,
1899 &ifa
->address
.sin
.sin_addr
) != 0) {
1908 /* make sure we're "allowed" to add this type of addr */
1909 if (ifa
->address
.sa
.sa_family
== AF_INET6
) {
1910 /* invalid if we're not a v6 endpoint */
1911 if ((inp
->sctp_flags
& SCTP_PCB_FLAGS_BOUND_V6
) == 0)
1913 /* is the v6 addr really valid ? */
1914 if (ifa
->localifa_flags
& SCTP_ADDR_IFA_UNUSEABLE
) {
1919 /* put this address on the "pending/do not use yet" list */
1920 sctp_add_local_addr_restricted(stcb
, ifa
);
1922 * check address scope if address is out of scope, don't queue
1923 * anything... note: this would leave the address on both inp and
1926 switch (ifa
->address
.sa
.sa_family
) {
1930 struct sockaddr_in6
*sin6
;
1932 sin6
= &ifa
->address
.sin6
;
1933 if (IN6_IS_ADDR_UNSPECIFIED(&sin6
->sin6_addr
)) {
1934 /* we skip unspecifed addresses */
1937 if (IN6_IS_ADDR_LINKLOCAL(&sin6
->sin6_addr
)) {
1938 if (stcb
->asoc
.scope
.local_scope
== 0) {
1941 /* is it the right link local scope? */
1942 if (sctp_is_scopeid_in_nets(stcb
, &ifa
->address
.sa
) == 0) {
1946 if (stcb
->asoc
.scope
.site_scope
== 0 &&
1947 IN6_IS_ADDR_SITELOCAL(&sin6
->sin6_addr
)) {
1956 struct sockaddr_in
*sin
;
1957 struct in6pcb
*inp6
;
1959 inp6
= (struct in6pcb
*)&inp
->ip_inp
.inp
;
1960 /* invalid if we are a v6 only endpoint */
1961 if ((inp
->sctp_flags
& SCTP_PCB_FLAGS_BOUND_V6
) &&
1962 SCTP_IPV6_V6ONLY(inp6
))
1965 sin
= &ifa
->address
.sin
;
1966 if (sin
->sin_addr
.s_addr
== 0) {
1967 /* we skip unspecifed addresses */
1970 if (stcb
->asoc
.scope
.ipv4_local_scope
== 0 &&
1971 IN4_ISPRIVATE_ADDRESS(&sin
->sin_addr
)) {
1978 /* else, not AF_INET or AF_INET6, so skip */
1982 /* queue an asconf for this address add/delete */
1983 if (sctp_is_feature_on(inp
, SCTP_PCB_FLAGS_DO_ASCONF
)) {
1984 /* does the peer do asconf? */
1985 if (stcb
->asoc
.asconf_supported
) {
1986 /* queue an asconf for this addr */
1987 status
= sctp_asconf_queue_add(stcb
, ifa
, type
);
1990 * if queued ok, and in the open state, send out the
1991 * ASCONF. If in the non-open state, these will be
1992 * sent when the state goes open.
1995 ((SCTP_GET_STATE(&stcb
->asoc
) == SCTP_STATE_OPEN
) ||
1996 (SCTP_GET_STATE(&stcb
->asoc
) == SCTP_STATE_SHUTDOWN_RECEIVED
))) {
1997 #ifdef SCTP_TIMER_BASED_ASCONF
1998 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF
, inp
,
1999 stcb
, stcb
->asoc
.primary_destination
);
2001 sctp_send_asconf(stcb
, NULL
, addr_locked
);
2010 sctp_asconf_iterator_ep(struct sctp_inpcb
*inp
, void *ptr
, uint32_t val SCTP_UNUSED
)
2012 struct sctp_asconf_iterator
*asc
;
2013 struct sctp_ifa
*ifa
;
2014 struct sctp_laddr
*l
;
2015 int cnt_invalid
= 0;
2017 asc
= (struct sctp_asconf_iterator
*)ptr
;
2018 LIST_FOREACH(l
, &asc
->list_of_work
, sctp_nxt_addr
) {
2020 switch (ifa
->address
.sa
.sa_family
) {
2023 /* invalid if we're not a v6 endpoint */
2024 if ((inp
->sctp_flags
& SCTP_PCB_FLAGS_BOUND_V6
) == 0) {
2026 if (asc
->cnt
== cnt_invalid
)
2034 /* invalid if we are a v6 only endpoint */
2035 struct in6pcb
*inp6
;
2037 inp6
= (struct in6pcb
*)&inp
->ip_inp
.inp
;
2038 if ((inp
->sctp_flags
& SCTP_PCB_FLAGS_BOUND_V6
) &&
2039 SCTP_IPV6_V6ONLY(inp6
)) {
2041 if (asc
->cnt
== cnt_invalid
)
2048 /* invalid address family */
2050 if (asc
->cnt
== cnt_invalid
)
2058 sctp_asconf_iterator_ep_end(struct sctp_inpcb
*inp
, void *ptr
, uint32_t val SCTP_UNUSED
)
2060 struct sctp_ifa
*ifa
;
2061 struct sctp_asconf_iterator
*asc
;
2062 struct sctp_laddr
*laddr
, *nladdr
, *l
;
2064 /* Only for specific case not bound all */
2065 asc
= (struct sctp_asconf_iterator
*)ptr
;
2066 LIST_FOREACH(l
, &asc
->list_of_work
, sctp_nxt_addr
) {
2068 if (l
->action
== SCTP_ADD_IP_ADDRESS
) {
2069 LIST_FOREACH(laddr
, &inp
->sctp_addr_list
,
2071 if (laddr
->ifa
== ifa
) {
2076 } else if (l
->action
== SCTP_DEL_IP_ADDRESS
) {
2077 LIST_FOREACH_SAFE(laddr
, &inp
->sctp_addr_list
, sctp_nxt_addr
, nladdr
) {
2078 /* remove only after all guys are done */
2079 if (laddr
->ifa
== ifa
) {
2080 sctp_del_local_addr_ep(inp
, ifa
);
2089 sctp_asconf_iterator_stcb(struct sctp_inpcb
*inp
, struct sctp_tcb
*stcb
,
2090 void *ptr
, uint32_t val SCTP_UNUSED
)
2092 struct sctp_asconf_iterator
*asc
;
2093 struct sctp_ifa
*ifa
;
2094 struct sctp_laddr
*l
;
2095 int cnt_invalid
= 0;
2099 asc
= (struct sctp_asconf_iterator
*)ptr
;
2100 LIST_FOREACH(l
, &asc
->list_of_work
, sctp_nxt_addr
) {
2104 /* address's vrf_id must be the vrf_id of the assoc */
2105 if (ifa
->vrf_id
!= stcb
->asoc
.vrf_id
) {
2108 /* Same checks again for assoc */
2109 switch (ifa
->address
.sa
.sa_family
) {
2113 /* invalid if we're not a v6 endpoint */
2114 struct sockaddr_in6
*sin6
;
2116 if ((inp
->sctp_flags
& SCTP_PCB_FLAGS_BOUND_V6
) == 0) {
2118 if (asc
->cnt
== cnt_invalid
)
2123 sin6
= &ifa
->address
.sin6
;
2124 if (IN6_IS_ADDR_UNSPECIFIED(&sin6
->sin6_addr
)) {
2125 /* we skip unspecifed addresses */
2128 if (prison_check_ip6(inp
->ip_inp
.inp
.inp_cred
,
2129 &sin6
->sin6_addr
) != 0) {
2132 if (IN6_IS_ADDR_LINKLOCAL(&sin6
->sin6_addr
)) {
2133 if (stcb
->asoc
.scope
.local_scope
== 0) {
2136 /* is it the right link local scope? */
2137 if (sctp_is_scopeid_in_nets(stcb
, &ifa
->address
.sa
) == 0) {
2147 /* invalid if we are a v6 only endpoint */
2148 struct in6pcb
*inp6
;
2149 struct sockaddr_in
*sin
;
2151 inp6
= (struct in6pcb
*)&inp
->ip_inp
.inp
;
2152 /* invalid if we are a v6 only endpoint */
2153 if ((inp
->sctp_flags
& SCTP_PCB_FLAGS_BOUND_V6
) &&
2154 SCTP_IPV6_V6ONLY(inp6
))
2157 sin
= &ifa
->address
.sin
;
2158 if (sin
->sin_addr
.s_addr
== 0) {
2159 /* we skip unspecifed addresses */
2162 if (prison_check_ip4(inp
->ip_inp
.inp
.inp_cred
,
2163 &sin
->sin_addr
) != 0) {
2166 if (stcb
->asoc
.scope
.ipv4_local_scope
== 0 &&
2167 IN4_ISPRIVATE_ADDRESS(&sin
->sin_addr
)) {
2170 if ((inp
->sctp_flags
& SCTP_PCB_FLAGS_BOUND_V6
) &&
2171 SCTP_IPV6_V6ONLY(inp6
)) {
2173 if (asc
->cnt
== cnt_invalid
)
2182 /* invalid address family */
2184 if (asc
->cnt
== cnt_invalid
)
2191 if (type
== SCTP_ADD_IP_ADDRESS
) {
2192 /* prevent this address from being used as a source */
2193 sctp_add_local_addr_restricted(stcb
, ifa
);
2194 } else if (type
== SCTP_DEL_IP_ADDRESS
) {
2195 struct sctp_nets
*net
;
2197 TAILQ_FOREACH(net
, &stcb
->asoc
.nets
, sctp_next
) {
2200 /* delete this address if cached */
2201 if (net
->ro
._s_addr
== ifa
) {
2202 sctp_free_ifa(net
->ro
._s_addr
);
2203 net
->ro
._s_addr
= NULL
;
2204 net
->src_addr_selected
= 0;
2208 net
->ro
.ro_rt
= NULL
;
2211 * Now we deleted our src address,
2212 * should we not also now reset the
2213 * cwnd/rto to start as if its a new
2216 stcb
->asoc
.cc_functions
.sctp_set_initial_cc_param(stcb
, net
);
2221 } else if (type
== SCTP_SET_PRIM_ADDR
) {
2222 if ((stcb
->sctp_ep
->sctp_flags
& SCTP_PCB_FLAGS_BOUNDALL
) == 0) {
2223 /* must validate the ifa is in the ep */
2224 if (sctp_is_addr_in_ep(stcb
->sctp_ep
, ifa
) == 0) {
2228 /* Need to check scopes for this guy */
2229 if (sctp_is_address_in_scope(ifa
, &stcb
->asoc
.scope
, 0) == 0) {
2234 /* queue an asconf for this address add/delete */
2235 if (sctp_is_feature_on(inp
, SCTP_PCB_FLAGS_DO_ASCONF
) &&
2236 stcb
->asoc
.asconf_supported
== 1) {
2237 /* queue an asconf for this addr */
2238 status
= sctp_asconf_queue_add(stcb
, ifa
, type
);
2240 * if queued ok, and in the open state, update the
2241 * count of queued params. If in the non-open
2242 * state, these get sent when the assoc goes open.
2244 if ((SCTP_GET_STATE(&stcb
->asoc
) == SCTP_STATE_OPEN
) ||
2245 (SCTP_GET_STATE(&stcb
->asoc
) == SCTP_STATE_SHUTDOWN_RECEIVED
)) {
2253 * If we have queued params in the open state, send out an ASCONF.
2255 if (num_queued
> 0) {
2256 sctp_send_asconf(stcb
, NULL
, SCTP_ADDR_NOT_LOCKED
);
2261 sctp_asconf_iterator_end(void *ptr
, uint32_t val SCTP_UNUSED
)
2263 struct sctp_asconf_iterator
*asc
;
2264 struct sctp_ifa
*ifa
;
2265 struct sctp_laddr
*l
, *nl
;
2267 asc
= (struct sctp_asconf_iterator
*)ptr
;
2268 LIST_FOREACH_SAFE(l
, &asc
->list_of_work
, sctp_nxt_addr
, nl
) {
2270 if (l
->action
== SCTP_ADD_IP_ADDRESS
) {
2271 /* Clear the defer use flag */
2272 ifa
->localifa_flags
&= ~SCTP_ADDR_DEFER_USE
;
2275 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr
), l
);
2276 SCTP_DECR_LADDR_COUNT();
2278 SCTP_FREE(asc
, SCTP_M_ASC_IT
);
2282 * sa is the sockaddr to ask the peer to set primary to.
2283 * returns: 0 = completed, -1 = error
2286 sctp_set_primary_ip_address_sa(struct sctp_tcb
*stcb
, struct sockaddr
*sa
)
2289 struct sctp_ifa
*ifa
;
2291 /* find the ifa for the desired set primary */
2292 vrf_id
= stcb
->asoc
.vrf_id
;
2293 ifa
= sctp_find_ifa_by_addr(sa
, vrf_id
, SCTP_ADDR_NOT_LOCKED
);
2295 /* Invalid address */
2298 /* queue an ASCONF:SET_PRIM_ADDR to be sent */
2299 if (!sctp_asconf_queue_add(stcb
, ifa
, SCTP_SET_PRIM_ADDR
)) {
2300 /* set primary queuing succeeded */
2301 SCTPDBG(SCTP_DEBUG_ASCONF1
,
2302 "set_primary_ip_address_sa: queued on tcb=%p, ",
2304 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, sa
);
2305 if ((SCTP_GET_STATE(&stcb
->asoc
) == SCTP_STATE_OPEN
) ||
2306 (SCTP_GET_STATE(&stcb
->asoc
) == SCTP_STATE_SHUTDOWN_RECEIVED
)) {
2307 #ifdef SCTP_TIMER_BASED_ASCONF
2308 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF
,
2309 stcb
->sctp_ep
, stcb
,
2310 stcb
->asoc
.primary_destination
);
2312 sctp_send_asconf(stcb
, NULL
, SCTP_ADDR_NOT_LOCKED
);
2316 SCTPDBG(SCTP_DEBUG_ASCONF1
, "set_primary_ip_address_sa: failed to add to queue on tcb=%p, ",
2318 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, sa
);
2325 sctp_set_primary_ip_address(struct sctp_ifa
*ifa
)
2327 struct sctp_inpcb
*inp
;
2329 /* go through all our PCB's */
2330 LIST_FOREACH(inp
, &SCTP_BASE_INFO(listhead
), sctp_list
) {
2331 struct sctp_tcb
*stcb
;
2333 /* process for all associations for this endpoint */
2334 LIST_FOREACH(stcb
, &inp
->sctp_asoc_list
, sctp_tcblist
) {
2335 /* queue an ASCONF:SET_PRIM_ADDR to be sent */
2336 if (!sctp_asconf_queue_add(stcb
, ifa
,
2337 SCTP_SET_PRIM_ADDR
)) {
2338 /* set primary queuing succeeded */
2339 SCTPDBG(SCTP_DEBUG_ASCONF1
, "set_primary_ip_address: queued on stcb=%p, ",
2341 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1
, &ifa
->address
.sa
);
2342 if ((SCTP_GET_STATE(&stcb
->asoc
) == SCTP_STATE_OPEN
) ||
2343 (SCTP_GET_STATE(&stcb
->asoc
) == SCTP_STATE_SHUTDOWN_RECEIVED
)) {
2344 #ifdef SCTP_TIMER_BASED_ASCONF
2345 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF
,
2346 stcb
->sctp_ep
, stcb
,
2347 stcb
->asoc
.primary_destination
);
2349 sctp_send_asconf(stcb
, NULL
, SCTP_ADDR_NOT_LOCKED
);
2353 } /* for each stcb */
2354 } /* for each inp */
2358 sctp_is_addr_pending(struct sctp_tcb
*stcb
, struct sctp_ifa
*sctp_ifa
)
2360 struct sctp_tmit_chunk
*chk
, *nchk
;
2361 unsigned int offset
, asconf_limit
;
2362 struct sctp_asconf_chunk
*acp
;
2363 struct sctp_asconf_paramhdr
*aph
;
2364 uint8_t aparam_buf
[SCTP_PARAM_BUFFER_SIZE
];
2365 struct sctp_paramhdr
*ph
;
2366 int add_cnt
, del_cnt
;
2367 uint16_t last_param_type
;
2369 add_cnt
= del_cnt
= 0;
2370 last_param_type
= 0;
2371 TAILQ_FOREACH_SAFE(chk
, &stcb
->asoc
.asconf_send_queue
, sctp_next
, nchk
) {
2372 if (chk
->data
== NULL
) {
2373 SCTPDBG(SCTP_DEBUG_ASCONF1
, "is_addr_pending: No mbuf data?\n");
2377 acp
= mtod(chk
->data
, struct sctp_asconf_chunk
*);
2378 offset
+= sizeof(struct sctp_asconf_chunk
);
2379 asconf_limit
= ntohs(acp
->ch
.chunk_length
);
2380 ph
= (struct sctp_paramhdr
*)sctp_m_getptr(chk
->data
, offset
, sizeof(struct sctp_paramhdr
), aparam_buf
);
2382 SCTPDBG(SCTP_DEBUG_ASCONF1
, "is_addr_pending: couldn't get lookup addr!\n");
2385 offset
+= ntohs(ph
->param_length
);
2387 aph
= (struct sctp_asconf_paramhdr
*)sctp_m_getptr(chk
->data
, offset
, sizeof(struct sctp_asconf_paramhdr
), aparam_buf
);
2389 SCTPDBG(SCTP_DEBUG_ASCONF1
, "is_addr_pending: Empty ASCONF will be sent?\n");
2392 while (aph
!= NULL
) {
2393 unsigned int param_length
, param_type
;
2395 param_type
= ntohs(aph
->ph
.param_type
);
2396 param_length
= ntohs(aph
->ph
.param_length
);
2397 if (offset
+ param_length
> asconf_limit
) {
2398 /* parameter goes beyond end of chunk! */
2401 if (param_length
> sizeof(aparam_buf
)) {
2402 SCTPDBG(SCTP_DEBUG_ASCONF1
, "is_addr_pending: param length (%u) larger than buffer size!\n", param_length
);
2405 if (param_length
<= sizeof(struct sctp_paramhdr
)) {
2406 SCTPDBG(SCTP_DEBUG_ASCONF1
, "is_addr_pending: param length(%u) too short\n", param_length
);
2409 aph
= (struct sctp_asconf_paramhdr
*)sctp_m_getptr(chk
->data
, offset
, param_length
, aparam_buf
);
2411 SCTPDBG(SCTP_DEBUG_ASCONF1
, "is_addr_pending: couldn't get entire param\n");
2414 ph
= (struct sctp_paramhdr
*)(aph
+ 1);
2415 if (sctp_addr_match(ph
, &sctp_ifa
->address
.sa
) != 0) {
2416 switch (param_type
) {
2417 case SCTP_ADD_IP_ADDRESS
:
2420 case SCTP_DEL_IP_ADDRESS
:
2426 last_param_type
= param_type
;
2428 offset
+= SCTP_SIZE32(param_length
);
2429 if (offset
>= asconf_limit
) {
2430 /* no more data in the mbuf chain */
2433 /* get pointer to next asconf param */
2434 aph
= (struct sctp_asconf_paramhdr
*)sctp_m_getptr(chk
->data
, offset
, sizeof(struct sctp_asconf_paramhdr
), aparam_buf
);
2439 * we want to find the sequences which consist of ADD -> DEL -> ADD
2442 if (add_cnt
> del_cnt
||
2443 (add_cnt
== del_cnt
&& last_param_type
== SCTP_ADD_IP_ADDRESS
)) {
2449 static struct sockaddr
*
2450 sctp_find_valid_localaddr(struct sctp_tcb
*stcb
, int addr_locked
)
2452 struct sctp_vrf
*vrf
= NULL
;
2453 struct sctp_ifn
*sctp_ifn
;
2454 struct sctp_ifa
*sctp_ifa
;
2456 if (addr_locked
== SCTP_ADDR_NOT_LOCKED
)
2457 SCTP_IPI_ADDR_RLOCK();
2458 vrf
= sctp_find_vrf(stcb
->asoc
.vrf_id
);
2460 if (addr_locked
== SCTP_ADDR_NOT_LOCKED
)
2461 SCTP_IPI_ADDR_RUNLOCK();
2464 LIST_FOREACH(sctp_ifn
, &vrf
->ifnlist
, next_ifn
) {
2465 if (stcb
->asoc
.scope
.loopback_scope
== 0 &&
2466 SCTP_IFN_IS_IFT_LOOP(sctp_ifn
)) {
2467 /* Skip if loopback_scope not set */
2470 LIST_FOREACH(sctp_ifa
, &sctp_ifn
->ifalist
, next_ifa
) {
2471 switch (sctp_ifa
->address
.sa
.sa_family
) {
2474 if (stcb
->asoc
.scope
.ipv4_addr_legal
) {
2475 struct sockaddr_in
*sin
;
2477 sin
= &sctp_ifa
->address
.sin
;
2478 if (sin
->sin_addr
.s_addr
== 0) {
2479 /* skip unspecifed addresses */
2482 if (prison_check_ip4(stcb
->sctp_ep
->ip_inp
.inp
.inp_cred
,
2483 &sin
->sin_addr
) != 0) {
2486 if (stcb
->asoc
.scope
.ipv4_local_scope
== 0 &&
2487 IN4_ISPRIVATE_ADDRESS(&sin
->sin_addr
))
2490 if (sctp_is_addr_restricted(stcb
, sctp_ifa
) &&
2491 (!sctp_is_addr_pending(stcb
, sctp_ifa
)))
2494 * found a valid local v4 address to
2497 if (addr_locked
== SCTP_ADDR_NOT_LOCKED
)
2498 SCTP_IPI_ADDR_RUNLOCK();
2499 return (&sctp_ifa
->address
.sa
);
2505 if (stcb
->asoc
.scope
.ipv6_addr_legal
) {
2506 struct sockaddr_in6
*sin6
;
2508 if (sctp_ifa
->localifa_flags
& SCTP_ADDR_IFA_UNUSEABLE
) {
2511 sin6
= &sctp_ifa
->address
.sin6
;
2512 if (IN6_IS_ADDR_UNSPECIFIED(&sin6
->sin6_addr
)) {
2514 * we skip unspecifed
2519 if (prison_check_ip6(stcb
->sctp_ep
->ip_inp
.inp
.inp_cred
,
2520 &sin6
->sin6_addr
) != 0) {
2523 if (stcb
->asoc
.scope
.local_scope
== 0 &&
2524 IN6_IS_ADDR_LINKLOCAL(&sin6
->sin6_addr
))
2526 if (stcb
->asoc
.scope
.site_scope
== 0 &&
2527 IN6_IS_ADDR_SITELOCAL(&sin6
->sin6_addr
))
2530 if (sctp_is_addr_restricted(stcb
, sctp_ifa
) &&
2531 (!sctp_is_addr_pending(stcb
, sctp_ifa
)))
2534 * found a valid local v6 address to
2537 if (addr_locked
== SCTP_ADDR_NOT_LOCKED
)
2538 SCTP_IPI_ADDR_RUNLOCK();
2539 return (&sctp_ifa
->address
.sa
);
2548 /* no valid addresses found */
2549 if (addr_locked
== SCTP_ADDR_NOT_LOCKED
)
2550 SCTP_IPI_ADDR_RUNLOCK();
2554 static struct sockaddr
*
2555 sctp_find_valid_localaddr_ep(struct sctp_tcb
*stcb
)
2557 struct sctp_laddr
*laddr
;
2559 LIST_FOREACH(laddr
, &stcb
->sctp_ep
->sctp_addr_list
, sctp_nxt_addr
) {
2560 if (laddr
->ifa
== NULL
) {
2563 /* is the address restricted ? */
2564 if (sctp_is_addr_restricted(stcb
, laddr
->ifa
) &&
2565 (!sctp_is_addr_pending(stcb
, laddr
->ifa
)))
2568 /* found a valid local address to use */
2569 return (&laddr
->ifa
->address
.sa
);
2571 /* no valid addresses found */
2576 * builds an ASCONF chunk from queued ASCONF params.
2577 * returns NULL on error (no mbuf, no ASCONF params queued, etc).
2580 sctp_compose_asconf(struct sctp_tcb
*stcb
, int *retlen
, int addr_locked
)
2582 struct mbuf
*m_asconf
, *m_asconf_chk
;
2583 struct sctp_asconf_addr
*aa
;
2584 struct sctp_asconf_chunk
*acp
;
2585 struct sctp_asconf_paramhdr
*aph
;
2586 struct sctp_asconf_addr_param
*aap
;
2588 uint32_t correlation_id
= 1; /* 0 is reserved... */
2589 caddr_t ptr
, lookup_ptr
;
2590 uint8_t lookup_used
= 0;
2592 /* are there any asconf params to send? */
2593 TAILQ_FOREACH(aa
, &stcb
->asoc
.asconf_queue
, next
) {
2601 * get a chunk header mbuf and a cluster for the asconf params since
2602 * it's simpler to fill in the asconf chunk header lookup address on
2605 m_asconf_chk
= sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_chunk
), 0, M_NOWAIT
, 1, MT_DATA
);
2606 if (m_asconf_chk
== NULL
) {
2608 SCTPDBG(SCTP_DEBUG_ASCONF1
,
2609 "compose_asconf: couldn't get chunk mbuf!\n");
2612 m_asconf
= sctp_get_mbuf_for_msg(MCLBYTES
, 0, M_NOWAIT
, 1, MT_DATA
);
2613 if (m_asconf
== NULL
) {
2615 SCTPDBG(SCTP_DEBUG_ASCONF1
,
2616 "compose_asconf: couldn't get mbuf!\n");
2617 sctp_m_freem(m_asconf_chk
);
2620 SCTP_BUF_LEN(m_asconf_chk
) = sizeof(struct sctp_asconf_chunk
);
2621 SCTP_BUF_LEN(m_asconf
) = 0;
2622 acp
= mtod(m_asconf_chk
, struct sctp_asconf_chunk
*);
2623 bzero(acp
, sizeof(struct sctp_asconf_chunk
));
2624 /* save pointers to lookup address and asconf params */
2625 lookup_ptr
= (caddr_t
)(acp
+ 1); /* after the header */
2626 ptr
= mtod(m_asconf
, caddr_t
); /* beginning of cluster */
2628 /* fill in chunk header info */
2629 acp
->ch
.chunk_type
= SCTP_ASCONF
;
2630 acp
->ch
.chunk_flags
= 0;
2631 acp
->serial_number
= htonl(stcb
->asoc
.asconf_seq_out
);
2632 stcb
->asoc
.asconf_seq_out
++;
2634 /* add parameters... up to smallest MTU allowed */
2635 TAILQ_FOREACH(aa
, &stcb
->asoc
.asconf_queue
, next
) {
2638 /* get the parameter length */
2639 p_length
= SCTP_SIZE32(aa
->ap
.aph
.ph
.param_length
);
2640 /* will it fit in current chunk? */
2641 if ((SCTP_BUF_LEN(m_asconf
) + p_length
> stcb
->asoc
.smallest_mtu
) ||
2642 (SCTP_BUF_LEN(m_asconf
) + p_length
> MCLBYTES
)) {
2643 /* won't fit, so we're done with this chunk */
2646 /* assign (and store) a correlation id */
2647 aa
->ap
.aph
.correlation_id
= correlation_id
++;
2650 * fill in address if we're doing a delete this is a simple
2651 * way for us to fill in the correlation address, which
2652 * should only be used by the peer if we're deleting our
2653 * source address and adding a new address (e.g. renumbering
2656 if (lookup_used
== 0 &&
2657 (aa
->special_del
== 0) &&
2658 aa
->ap
.aph
.ph
.param_type
== SCTP_DEL_IP_ADDRESS
) {
2659 struct sctp_ipv6addr_param
*lookup
;
2660 uint16_t p_size
, addr_size
;
2662 lookup
= (struct sctp_ipv6addr_param
*)lookup_ptr
;
2663 lookup
->ph
.param_type
=
2664 htons(aa
->ap
.addrp
.ph
.param_type
);
2665 if (aa
->ap
.addrp
.ph
.param_type
== SCTP_IPV6_ADDRESS
) {
2666 /* copy IPv6 address */
2667 p_size
= sizeof(struct sctp_ipv6addr_param
);
2668 addr_size
= sizeof(struct in6_addr
);
2670 /* copy IPv4 address */
2671 p_size
= sizeof(struct sctp_ipv4addr_param
);
2672 addr_size
= sizeof(struct in_addr
);
2674 lookup
->ph
.param_length
= htons(SCTP_SIZE32(p_size
));
2675 memcpy(lookup
->addr
, &aa
->ap
.addrp
.addr
, addr_size
);
2676 SCTP_BUF_LEN(m_asconf_chk
) += SCTP_SIZE32(p_size
);
2679 /* copy into current space */
2680 memcpy(ptr
, &aa
->ap
, p_length
);
2682 /* network elements and update lengths */
2683 aph
= (struct sctp_asconf_paramhdr
*)ptr
;
2684 aap
= (struct sctp_asconf_addr_param
*)ptr
;
2685 /* correlation_id is transparent to peer, no htonl needed */
2686 aph
->ph
.param_type
= htons(aph
->ph
.param_type
);
2687 aph
->ph
.param_length
= htons(aph
->ph
.param_length
);
2688 aap
->addrp
.ph
.param_type
= htons(aap
->addrp
.ph
.param_type
);
2689 aap
->addrp
.ph
.param_length
= htons(aap
->addrp
.ph
.param_length
);
2691 SCTP_BUF_LEN(m_asconf
) += SCTP_SIZE32(p_length
);
2692 ptr
+= SCTP_SIZE32(p_length
);
2695 * these params are removed off the pending list upon
2696 * getting an ASCONF-ACK back from the peer, just set flag
2700 /* check to see if the lookup addr has been populated yet */
2701 if (lookup_used
== 0) {
2702 /* NOTE: if the address param is optional, can skip this... */
2703 /* add any valid (existing) address... */
2704 struct sctp_ipv6addr_param
*lookup
;
2705 uint16_t p_size
, addr_size
;
2706 struct sockaddr
*found_addr
;
2709 if (stcb
->sctp_ep
->sctp_flags
& SCTP_PCB_FLAGS_BOUNDALL
)
2710 found_addr
= sctp_find_valid_localaddr(stcb
,
2713 found_addr
= sctp_find_valid_localaddr_ep(stcb
);
2715 lookup
= (struct sctp_ipv6addr_param
*)lookup_ptr
;
2716 if (found_addr
!= NULL
) {
2717 switch (found_addr
->sa_family
) {
2720 /* copy IPv6 address */
2721 lookup
->ph
.param_type
=
2722 htons(SCTP_IPV6_ADDRESS
);
2723 p_size
= sizeof(struct sctp_ipv6addr_param
);
2724 addr_size
= sizeof(struct in6_addr
);
2725 addr_ptr
= (caddr_t
)&((struct sockaddr_in6
*)
2726 found_addr
)->sin6_addr
;
2731 /* copy IPv4 address */
2732 lookup
->ph
.param_type
=
2733 htons(SCTP_IPV4_ADDRESS
);
2734 p_size
= sizeof(struct sctp_ipv4addr_param
);
2735 addr_size
= sizeof(struct in_addr
);
2736 addr_ptr
= (caddr_t
)&((struct sockaddr_in
*)
2737 found_addr
)->sin_addr
;
2746 lookup
->ph
.param_length
= htons(SCTP_SIZE32(p_size
));
2747 memcpy(lookup
->addr
, addr_ptr
, addr_size
);
2748 SCTP_BUF_LEN(m_asconf_chk
) += SCTP_SIZE32(p_size
);
2750 /* uh oh... don't have any address?? */
2751 SCTPDBG(SCTP_DEBUG_ASCONF1
,
2752 "compose_asconf: no lookup addr!\n");
2753 /* XXX for now, we send a IPv4 address of 0.0.0.0 */
2754 lookup
->ph
.param_type
= htons(SCTP_IPV4_ADDRESS
);
2755 lookup
->ph
.param_length
= htons(SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param
)));
2756 bzero(lookup
->addr
, sizeof(struct in_addr
));
2757 SCTP_BUF_LEN(m_asconf_chk
) += SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param
));
2760 /* chain it all together */
2761 SCTP_BUF_NEXT(m_asconf_chk
) = m_asconf
;
2762 *retlen
= SCTP_BUF_LEN(m_asconf_chk
) + SCTP_BUF_LEN(m_asconf
);
2763 acp
->ch
.chunk_length
= htons(*retlen
);
2765 return (m_asconf_chk
);
2769 * section to handle address changes before an association is up eg. changes
2770 * during INIT/INIT-ACK/COOKIE-ECHO handshake
2774 * processes the (local) addresses in the INIT-ACK chunk
2777 sctp_process_initack_addresses(struct sctp_tcb
*stcb
, struct mbuf
*m
,
2778 unsigned int offset
, unsigned int length
)
2780 struct sctp_paramhdr tmp_param
, *ph
;
2781 uint16_t plen
, ptype
;
2782 struct sctp_ifa
*sctp_ifa
;
2783 union sctp_sockstore store
;
2786 struct sctp_ipv6addr_param addr6_store
;
2790 struct sctp_ipv4addr_param addr4_store
;
2794 SCTPDBG(SCTP_DEBUG_ASCONF2
, "processing init-ack addresses\n");
2795 if (stcb
== NULL
) /* Un-needed check for SA */
2798 /* convert to upper bound */
2801 if ((offset
+ sizeof(struct sctp_paramhdr
)) > length
) {
2804 /* go through the addresses in the init-ack */
2805 ph
= (struct sctp_paramhdr
*)
2806 sctp_m_getptr(m
, offset
, sizeof(struct sctp_paramhdr
),
2807 (uint8_t *) & tmp_param
);
2808 while (ph
!= NULL
) {
2809 ptype
= ntohs(ph
->param_type
);
2810 plen
= ntohs(ph
->param_length
);
2813 case SCTP_IPV6_ADDRESS
:
2815 struct sctp_ipv6addr_param
*a6p
;
2817 /* get the entire IPv6 address param */
2818 a6p
= (struct sctp_ipv6addr_param
*)
2819 sctp_m_getptr(m
, offset
,
2820 sizeof(struct sctp_ipv6addr_param
),
2821 (uint8_t *) & addr6_store
);
2822 if (plen
!= sizeof(struct sctp_ipv6addr_param
) ||
2826 memset(&store
, 0, sizeof(union sctp_sockstore
));
2827 store
.sin6
.sin6_family
= AF_INET6
;
2828 store
.sin6
.sin6_len
= sizeof(struct sockaddr_in6
);
2829 store
.sin6
.sin6_port
= stcb
->rport
;
2830 memcpy(&store
.sin6
.sin6_addr
, a6p
->addr
, sizeof(struct in6_addr
));
2835 case SCTP_IPV4_ADDRESS
:
2837 struct sctp_ipv4addr_param
*a4p
;
2839 /* get the entire IPv4 address param */
2840 a4p
= (struct sctp_ipv4addr_param
*)sctp_m_getptr(m
, offset
,
2841 sizeof(struct sctp_ipv4addr_param
),
2842 (uint8_t *) & addr4_store
);
2843 if (plen
!= sizeof(struct sctp_ipv4addr_param
) ||
2847 memset(&store
, 0, sizeof(union sctp_sockstore
));
2848 store
.sin
.sin_family
= AF_INET
;
2849 store
.sin
.sin_len
= sizeof(struct sockaddr_in
);
2850 store
.sin
.sin_port
= stcb
->rport
;
2851 store
.sin
.sin_addr
.s_addr
= a4p
->addr
;
2859 /* see if this address really (still) exists */
2860 sctp_ifa
= sctp_find_ifa_by_addr(&store
.sa
, stcb
->asoc
.vrf_id
,
2861 SCTP_ADDR_NOT_LOCKED
);
2862 if (sctp_ifa
== NULL
) {
2863 /* address doesn't exist anymore */
2866 /* are ASCONFs allowed ? */
2867 if ((sctp_is_feature_on(stcb
->sctp_ep
,
2868 SCTP_PCB_FLAGS_DO_ASCONF
)) &&
2869 stcb
->asoc
.asconf_supported
) {
2870 /* queue an ASCONF DEL_IP_ADDRESS */
2871 status
= sctp_asconf_queue_sa_delete(stcb
, &store
.sa
);
2873 * if queued ok, and in correct state, send
2877 SCTP_GET_STATE(&stcb
->asoc
) ==
2879 #ifdef SCTP_TIMER_BASED_ASCONF
2880 sctp_timer_start(SCTP_TIMER_TYPE_ASCONF
,
2881 stcb
->sctp_ep
, stcb
,
2882 stcb
->asoc
.primary_destination
);
2884 sctp_send_asconf(stcb
, NULL
, SCTP_ADDR_NOT_LOCKED
);
2891 * Sanity check: Make sure the length isn't 0, otherwise
2892 * we'll be stuck in this loop for a long time...
2894 if (SCTP_SIZE32(plen
) == 0) {
2895 SCTP_PRINTF("process_initack_addrs: bad len (%d) type=%xh\n",
2899 /* get next parameter */
2900 offset
+= SCTP_SIZE32(plen
);
2901 if ((offset
+ sizeof(struct sctp_paramhdr
)) > length
)
2903 ph
= (struct sctp_paramhdr
*)sctp_m_getptr(m
, offset
,
2904 sizeof(struct sctp_paramhdr
), (uint8_t *) & tmp_param
);
2908 /* FIX ME: need to verify return result for v6 address type if v6 disabled */
2910 * checks to see if a specific address is in the initack address list returns
2911 * 1 if found, 0 if not
2914 sctp_addr_in_initack(struct mbuf
*m
, uint32_t offset
, uint32_t length
, struct sockaddr
*sa
)
2916 struct sctp_paramhdr tmp_param
, *ph
;
2917 uint16_t plen
, ptype
;
2920 struct sockaddr_in
*sin
;
2921 struct sctp_ipv4addr_param
*a4p
;
2922 struct sctp_ipv6addr_param addr4_store
;
2926 struct sockaddr_in6
*sin6
;
2927 struct sctp_ipv6addr_param
*a6p
;
2928 struct sctp_ipv6addr_param addr6_store
;
2929 struct sockaddr_in6 sin6_tmp
;
2933 switch (sa
->sa_family
) {
2946 SCTPDBG(SCTP_DEBUG_ASCONF2
, "find_initack_addr: starting search for ");
2947 SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2
, sa
);
2948 /* convert to upper bound */
2951 if ((offset
+ sizeof(struct sctp_paramhdr
)) > length
) {
2952 SCTPDBG(SCTP_DEBUG_ASCONF1
,
2953 "find_initack_addr: invalid offset?\n");
2956 /* go through the addresses in the init-ack */
2957 ph
= (struct sctp_paramhdr
*)sctp_m_getptr(m
, offset
,
2958 sizeof(struct sctp_paramhdr
), (uint8_t *) & tmp_param
);
2959 while (ph
!= NULL
) {
2960 ptype
= ntohs(ph
->param_type
);
2961 plen
= ntohs(ph
->param_length
);
2964 case SCTP_IPV6_ADDRESS
:
2965 if (sa
->sa_family
== AF_INET6
) {
2966 /* get the entire IPv6 address param */
2967 if (plen
!= sizeof(struct sctp_ipv6addr_param
)) {
2970 /* get the entire IPv6 address param */
2971 a6p
= (struct sctp_ipv6addr_param
*)
2972 sctp_m_getptr(m
, offset
,
2973 sizeof(struct sctp_ipv6addr_param
),
2974 (uint8_t *) & addr6_store
);
2978 sin6
= (struct sockaddr_in6
*)sa
;
2979 if (IN6_IS_SCOPE_LINKLOCAL(&sin6
->sin6_addr
)) {
2980 /* create a copy and clear scope */
2981 memcpy(&sin6_tmp
, sin6
,
2982 sizeof(struct sockaddr_in6
));
2984 in6_clearscope(&sin6
->sin6_addr
);
2986 if (memcmp(&sin6
->sin6_addr
, a6p
->addr
,
2987 sizeof(struct in6_addr
)) == 0) {
2995 case SCTP_IPV4_ADDRESS
:
2996 if (sa
->sa_family
== AF_INET
) {
2997 if (plen
!= sizeof(struct sctp_ipv4addr_param
)) {
3000 /* get the entire IPv4 address param */
3001 a4p
= (struct sctp_ipv4addr_param
*)
3002 sctp_m_getptr(m
, offset
,
3003 sizeof(struct sctp_ipv4addr_param
),
3004 (uint8_t *) & addr4_store
);
3008 sin
= (struct sockaddr_in
*)sa
;
3009 if (sin
->sin_addr
.s_addr
== a4p
->addr
) {
3019 /* get next parameter */
3020 offset
+= SCTP_SIZE32(plen
);
3021 if (offset
+ sizeof(struct sctp_paramhdr
) > length
) {
3024 ph
= (struct sctp_paramhdr
*)
3025 sctp_m_getptr(m
, offset
, sizeof(struct sctp_paramhdr
),
3026 (uint8_t *) & tmp_param
);
3033 * makes sure that the current endpoint local addr list is consistent with
3034 * the new association (eg. subset bound, asconf allowed) adds addresses as
3038 sctp_check_address_list_ep(struct sctp_tcb
*stcb
, struct mbuf
*m
, int offset
,
3039 int length
, struct sockaddr
*init_addr
)
3041 struct sctp_laddr
*laddr
;
3043 /* go through the endpoint list */
3044 LIST_FOREACH(laddr
, &stcb
->sctp_ep
->sctp_addr_list
, sctp_nxt_addr
) {
3045 /* be paranoid and validate the laddr */
3046 if (laddr
->ifa
== NULL
) {
3047 SCTPDBG(SCTP_DEBUG_ASCONF1
,
3048 "check_addr_list_ep: laddr->ifa is NULL");
3051 if (laddr
->ifa
== NULL
) {
3052 SCTPDBG(SCTP_DEBUG_ASCONF1
, "check_addr_list_ep: laddr->ifa->ifa_addr is NULL");
3055 /* do i have it implicitly? */
3056 if (sctp_cmpaddr(&laddr
->ifa
->address
.sa
, init_addr
)) {
3059 /* check to see if in the init-ack */
3060 if (!sctp_addr_in_initack(m
, offset
, length
, &laddr
->ifa
->address
.sa
)) {
3062 sctp_addr_mgmt_assoc(stcb
->sctp_ep
, stcb
, laddr
->ifa
,
3063 SCTP_ADD_IP_ADDRESS
, SCTP_ADDR_NOT_LOCKED
);
3069 * makes sure that the current kernel address list is consistent with the new
3070 * association (with all addrs bound) adds addresses as necessary
3073 sctp_check_address_list_all(struct sctp_tcb
*stcb
, struct mbuf
*m
, int offset
,
3074 int length
, struct sockaddr
*init_addr
,
3075 uint16_t local_scope
, uint16_t site_scope
,
3076 uint16_t ipv4_scope
, uint16_t loopback_scope
)
3078 struct sctp_vrf
*vrf
= NULL
;
3079 struct sctp_ifn
*sctp_ifn
;
3080 struct sctp_ifa
*sctp_ifa
;
3084 struct sockaddr_in
*sin
;
3088 struct sockaddr_in6
*sin6
;
3093 vrf_id
= stcb
->asoc
.vrf_id
;
3097 SCTP_IPI_ADDR_RLOCK();
3098 vrf
= sctp_find_vrf(vrf_id
);
3100 SCTP_IPI_ADDR_RUNLOCK();
3103 /* go through all our known interfaces */
3104 LIST_FOREACH(sctp_ifn
, &vrf
->ifnlist
, next_ifn
) {
3105 if (loopback_scope
== 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn
)) {
3106 /* skip loopback interface */
3109 /* go through each interface address */
3110 LIST_FOREACH(sctp_ifa
, &sctp_ifn
->ifalist
, next_ifa
) {
3111 /* do i have it implicitly? */
3112 if (sctp_cmpaddr(&sctp_ifa
->address
.sa
, init_addr
)) {
3115 switch (sctp_ifa
->address
.sa
.sa_family
) {
3118 sin
= &sctp_ifa
->address
.sin
;
3119 if (prison_check_ip4(stcb
->sctp_ep
->ip_inp
.inp
.inp_cred
,
3120 &sin
->sin_addr
) != 0) {
3123 if ((ipv4_scope
== 0) &&
3124 (IN4_ISPRIVATE_ADDRESS(&sin
->sin_addr
))) {
3125 /* private address not in scope */
3132 sin6
= &sctp_ifa
->address
.sin6
;
3133 if (prison_check_ip6(stcb
->sctp_ep
->ip_inp
.inp
.inp_cred
,
3134 &sin6
->sin6_addr
) != 0) {
3137 if ((local_scope
== 0) &&
3138 (IN6_IS_ADDR_LINKLOCAL(&sin6
->sin6_addr
))) {
3141 if ((site_scope
== 0) &&
3142 (IN6_IS_ADDR_SITELOCAL(&sin6
->sin6_addr
))) {
3150 /* check to see if in the init-ack */
3151 if (!sctp_addr_in_initack(m
, offset
, length
, &sctp_ifa
->address
.sa
)) {
3153 sctp_addr_mgmt_assoc(stcb
->sctp_ep
, stcb
,
3154 sctp_ifa
, SCTP_ADD_IP_ADDRESS
,
3157 } /* end foreach ifa */
3158 } /* end foreach ifn */
3159 SCTP_IPI_ADDR_RUNLOCK();
3163 * validates an init-ack chunk (from a cookie-echo) with current addresses
3164 * adds addresses from the init-ack into our local address list, if needed
3165 * queues asconf adds/deletes addresses as needed and makes appropriate list
3166 * changes for source address selection m, offset: points to the start of the
3167 * address list in an init-ack chunk length: total length of the address
3168 * params only init_addr: address where my INIT-ACK was sent from
3171 sctp_check_address_list(struct sctp_tcb
*stcb
, struct mbuf
*m
, int offset
,
3172 int length
, struct sockaddr
*init_addr
,
3173 uint16_t local_scope
, uint16_t site_scope
,
3174 uint16_t ipv4_scope
, uint16_t loopback_scope
)
3176 /* process the local addresses in the initack */
3177 sctp_process_initack_addresses(stcb
, m
, offset
, length
);
3179 if (stcb
->sctp_ep
->sctp_flags
& SCTP_PCB_FLAGS_BOUNDALL
) {
3180 /* bound all case */
3181 sctp_check_address_list_all(stcb
, m
, offset
, length
, init_addr
,
3182 local_scope
, site_scope
, ipv4_scope
, loopback_scope
);
3184 /* subset bound case */
3185 if (sctp_is_feature_on(stcb
->sctp_ep
,
3186 SCTP_PCB_FLAGS_DO_ASCONF
)) {
3187 /* asconf's allowed */
3188 sctp_check_address_list_ep(stcb
, m
, offset
, length
,
3191 /* else, no asconfs allowed, so what we sent is what we get */
3196 * sctp_bindx() support
3199 sctp_addr_mgmt_ep_sa(struct sctp_inpcb
*inp
, struct sockaddr
*sa
,
3200 uint32_t type
, uint32_t vrf_id
, struct sctp_ifa
*sctp_ifap
)
3202 struct sctp_ifa
*ifa
;
3203 struct sctp_laddr
*laddr
, *nladdr
;
3205 if (sa
->sa_len
== 0) {
3206 SCTP_LTRACE_ERR_RET(inp
, NULL
, NULL
, SCTP_FROM_SCTP_ASCONF
, EINVAL
);
3211 } else if (type
== SCTP_ADD_IP_ADDRESS
) {
3212 /* For an add the address MUST be on the system */
3213 ifa
= sctp_find_ifa_by_addr(sa
, vrf_id
, SCTP_ADDR_NOT_LOCKED
);
3214 } else if (type
== SCTP_DEL_IP_ADDRESS
) {
3215 /* For a delete we need to find it in the inp */
3216 ifa
= sctp_find_ifa_in_ep(inp
, sa
, SCTP_ADDR_NOT_LOCKED
);
3221 if (type
== SCTP_ADD_IP_ADDRESS
) {
3222 sctp_add_local_addr_ep(inp
, ifa
, type
);
3223 } else if (type
== SCTP_DEL_IP_ADDRESS
) {
3224 if (inp
->laddr_count
< 2) {
3225 /* can't delete the last local address */
3226 SCTP_LTRACE_ERR_RET(inp
, NULL
, NULL
, SCTP_FROM_SCTP_ASCONF
, EINVAL
);
3229 LIST_FOREACH(laddr
, &inp
->sctp_addr_list
,
3231 if (ifa
== laddr
->ifa
) {
3232 /* Mark in the delete */
3233 laddr
->action
= type
;
3237 if (LIST_EMPTY(&inp
->sctp_asoc_list
)) {
3239 * There is no need to start the iterator if the inp
3240 * has no associations.
3242 if (type
== SCTP_DEL_IP_ADDRESS
) {
3243 LIST_FOREACH_SAFE(laddr
, &inp
->sctp_addr_list
, sctp_nxt_addr
, nladdr
) {
3244 if (laddr
->ifa
== ifa
) {
3245 sctp_del_local_addr_ep(inp
, ifa
);
3250 struct sctp_asconf_iterator
*asc
;
3251 struct sctp_laddr
*wi
;
3254 SCTP_MALLOC(asc
, struct sctp_asconf_iterator
*,
3255 sizeof(struct sctp_asconf_iterator
),
3258 SCTP_LTRACE_ERR_RET(inp
, NULL
, NULL
, SCTP_FROM_SCTP_ASCONF
, ENOMEM
);
3261 wi
= SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr
), struct sctp_laddr
);
3263 SCTP_FREE(asc
, SCTP_M_ASC_IT
);
3264 SCTP_LTRACE_ERR_RET(inp
, NULL
, NULL
, SCTP_FROM_SCTP_ASCONF
, ENOMEM
);
3267 LIST_INIT(&asc
->list_of_work
);
3269 SCTP_INCR_LADDR_COUNT();
3272 atomic_add_int(&ifa
->refcount
, 1);
3273 LIST_INSERT_HEAD(&asc
->list_of_work
, wi
, sctp_nxt_addr
);
3274 ret
= sctp_initiate_iterator(sctp_asconf_iterator_ep
,
3275 sctp_asconf_iterator_stcb
,
3276 sctp_asconf_iterator_ep_end
,
3278 SCTP_PCB_ANY_FEATURES
,
3279 SCTP_ASOC_ANY_STATE
,
3281 sctp_asconf_iterator_end
, inp
, 0);
3283 SCTP_PRINTF("Failed to initiate iterator for addr_mgmt_ep_sa\n");
3284 SCTP_LTRACE_ERR_RET(inp
, NULL
, NULL
, SCTP_FROM_SCTP_ASCONF
, EFAULT
);
3285 sctp_asconf_iterator_end(asc
, 0);
3291 /* invalid address! */
3292 SCTP_LTRACE_ERR_RET(NULL
, NULL
, NULL
, SCTP_FROM_SCTP_ASCONF
, EADDRNOTAVAIL
);
3293 return (EADDRNOTAVAIL
);
3298 sctp_asconf_send_nat_state_update(struct sctp_tcb
*stcb
,
3299 struct sctp_nets
*net
)
3301 struct sctp_asconf_addr
*aa
;
3302 struct sctp_ifa
*sctp_ifap
;
3303 struct sctp_asconf_tag_param
*vtag
;
3306 struct sockaddr_in
*to
;
3310 struct sockaddr_in6
*to6
;
3314 SCTPDBG(SCTP_DEBUG_ASCONF1
, "sctp_asconf_send_nat_state_update: Missing net\n");
3318 SCTPDBG(SCTP_DEBUG_ASCONF1
, "sctp_asconf_send_nat_state_update: Missing stcb\n");
3322 * Need to have in the asconf: - vtagparam(my_vtag/peer_vtag) -
3323 * add(0.0.0.0) - del(0.0.0.0) - Any global addresses add(addr)
3325 SCTP_MALLOC(aa
, struct sctp_asconf_addr
*, sizeof(*aa
),
3328 /* didn't get memory */
3329 SCTPDBG(SCTP_DEBUG_ASCONF1
,
3330 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3333 aa
->special_del
= 0;
3334 /* fill in asconf address parameter fields */
3335 /* top level elements are "networked" during send */
3337 aa
->sent
= 0; /* clear sent flag */
3338 vtag
= (struct sctp_asconf_tag_param
*)&aa
->ap
.aph
;
3339 vtag
->aph
.ph
.param_type
= SCTP_NAT_VTAGS
;
3340 vtag
->aph
.ph
.param_length
= sizeof(struct sctp_asconf_tag_param
);
3341 vtag
->local_vtag
= htonl(stcb
->asoc
.my_vtag
);
3342 vtag
->remote_vtag
= htonl(stcb
->asoc
.peer_vtag
);
3343 TAILQ_INSERT_TAIL(&stcb
->asoc
.asconf_queue
, aa
, next
);
3345 SCTP_MALLOC(aa
, struct sctp_asconf_addr
*, sizeof(*aa
),
3348 /* didn't get memory */
3349 SCTPDBG(SCTP_DEBUG_ASCONF1
,
3350 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3353 memset(aa
, 0, sizeof(struct sctp_asconf_addr
));
3354 /* fill in asconf address parameter fields */
3356 switch (net
->ro
._l_addr
.sa
.sa_family
) {
3359 aa
->ap
.aph
.ph
.param_type
= SCTP_ADD_IP_ADDRESS
;
3360 aa
->ap
.aph
.ph
.param_length
= sizeof(struct sctp_asconf_addrv4_param
);
3361 aa
->ap
.addrp
.ph
.param_type
= SCTP_IPV4_ADDRESS
;
3362 aa
->ap
.addrp
.ph
.param_length
= sizeof(struct sctp_ipv4addr_param
);
3363 /* No need to add an address, we are using 0.0.0.0 */
3364 TAILQ_INSERT_TAIL(&stcb
->asoc
.asconf_queue
, aa
, next
);
3369 aa
->ap
.aph
.ph
.param_type
= SCTP_ADD_IP_ADDRESS
;
3370 aa
->ap
.aph
.ph
.param_length
= sizeof(struct sctp_asconf_addr_param
);
3371 aa
->ap
.addrp
.ph
.param_type
= SCTP_IPV6_ADDRESS
;
3372 aa
->ap
.addrp
.ph
.param_length
= sizeof(struct sctp_ipv6addr_param
);
3373 /* No need to add an address, we are using 0.0.0.0 */
3374 TAILQ_INSERT_TAIL(&stcb
->asoc
.asconf_queue
, aa
, next
);
3378 SCTPDBG(SCTP_DEBUG_ASCONF1
,
3379 "sctp_asconf_send_nat_state_update: unknown address family\n");
3380 SCTP_FREE(aa
, SCTP_M_ASC_ADDR
);
3383 SCTP_MALLOC(aa
, struct sctp_asconf_addr
*, sizeof(*aa
),
3386 /* didn't get memory */
3387 SCTPDBG(SCTP_DEBUG_ASCONF1
,
3388 "sctp_asconf_send_nat_state_update: failed to get memory!\n");
3391 memset(aa
, 0, sizeof(struct sctp_asconf_addr
));
3392 /* fill in asconf address parameter fields */
3394 switch (net
->ro
._l_addr
.sa
.sa_family
) {
3397 aa
->ap
.aph
.ph
.param_type
= SCTP_ADD_IP_ADDRESS
;
3398 aa
->ap
.aph
.ph
.param_length
= sizeof(struct sctp_asconf_addrv4_param
);
3399 aa
->ap
.addrp
.ph
.param_type
= SCTP_IPV4_ADDRESS
;
3400 aa
->ap
.addrp
.ph
.param_length
= sizeof(struct sctp_ipv4addr_param
);
3401 /* No need to add an address, we are using 0.0.0.0 */
3402 TAILQ_INSERT_TAIL(&stcb
->asoc
.asconf_queue
, aa
, next
);
3407 aa
->ap
.aph
.ph
.param_type
= SCTP_DEL_IP_ADDRESS
;
3408 aa
->ap
.aph
.ph
.param_length
= sizeof(struct sctp_asconf_addr_param
);
3409 aa
->ap
.addrp
.ph
.param_type
= SCTP_IPV6_ADDRESS
;
3410 aa
->ap
.addrp
.ph
.param_length
= sizeof(struct sctp_ipv6addr_param
);
3411 /* No need to add an address, we are using 0.0.0.0 */
3412 TAILQ_INSERT_TAIL(&stcb
->asoc
.asconf_queue
, aa
, next
);
3416 SCTPDBG(SCTP_DEBUG_ASCONF1
,
3417 "sctp_asconf_send_nat_state_update: unknown address family\n");
3418 SCTP_FREE(aa
, SCTP_M_ASC_ADDR
);
3421 /* Now we must hunt the addresses and add all global addresses */
3422 if (stcb
->sctp_ep
->sctp_flags
& SCTP_PCB_FLAGS_BOUNDALL
) {
3423 struct sctp_vrf
*vrf
= NULL
;
3424 struct sctp_ifn
*sctp_ifnp
;
3427 vrf_id
= stcb
->sctp_ep
->def_vrf_id
;
3428 vrf
= sctp_find_vrf(vrf_id
);
3432 SCTP_IPI_ADDR_RLOCK();
3433 LIST_FOREACH(sctp_ifnp
, &vrf
->ifnlist
, next_ifn
) {
3434 LIST_FOREACH(sctp_ifap
, &sctp_ifnp
->ifalist
, next_ifa
) {
3435 switch (sctp_ifap
->address
.sa
.sa_family
) {
3438 to
= &sctp_ifap
->address
.sin
;
3439 if (prison_check_ip4(stcb
->sctp_ep
->ip_inp
.inp
.inp_cred
,
3440 &to
->sin_addr
) != 0) {
3443 if (IN4_ISPRIVATE_ADDRESS(&to
->sin_addr
)) {
3446 if (IN4_ISLOOPBACK_ADDRESS(&to
->sin_addr
)) {
3453 to6
= &sctp_ifap
->address
.sin6
;
3454 if (prison_check_ip6(stcb
->sctp_ep
->ip_inp
.inp
.inp_cred
,
3455 &to6
->sin6_addr
) != 0) {
3458 if (IN6_IS_ADDR_LOOPBACK(&to6
->sin6_addr
)) {
3461 if (IN6_IS_ADDR_LINKLOCAL(&to6
->sin6_addr
)) {
3469 sctp_asconf_queue_mgmt(stcb
, sctp_ifap
, SCTP_ADD_IP_ADDRESS
);
3472 SCTP_IPI_ADDR_RUNLOCK();
3474 struct sctp_laddr
*laddr
;
3476 LIST_FOREACH(laddr
, &stcb
->sctp_ep
->sctp_addr_list
, sctp_nxt_addr
) {
3477 if (laddr
->ifa
== NULL
) {
3480 if (laddr
->ifa
->localifa_flags
& SCTP_BEING_DELETED
)
3482 * Address being deleted by the system, dont
3486 if (laddr
->action
== SCTP_DEL_IP_ADDRESS
) {
3488 * Address being deleted on this ep don't
3493 sctp_ifap
= laddr
->ifa
;
3494 switch (sctp_ifap
->address
.sa
.sa_family
) {
3497 to
= &sctp_ifap
->address
.sin
;
3498 if (IN4_ISPRIVATE_ADDRESS(&to
->sin_addr
)) {
3501 if (IN4_ISLOOPBACK_ADDRESS(&to
->sin_addr
)) {
3508 to6
= &sctp_ifap
->address
.sin6
;
3509 if (IN6_IS_ADDR_LOOPBACK(&to6
->sin6_addr
)) {
3512 if (IN6_IS_ADDR_LINKLOCAL(&to6
->sin6_addr
)) {
3520 sctp_asconf_queue_mgmt(stcb
, sctp_ifap
, SCTP_ADD_IP_ADDRESS
);
3524 /* Now we must send the asconf into the queue */
3525 sctp_send_asconf(stcb
, net
, SCTP_ADDR_NOT_LOCKED
);