1 /* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */
2 /* $NetBSD: sctp6_usrreq.c,v 1.24 2022/11/04 09:01:53 ozaki-r Exp $ */
3
4 /*
5 * Copyright (c) 2001, 2002, 2003, 2004 Cisco Systems, Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Cisco Systems, Inc.
19 * 4. Neither the name of the project nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY CISCO SYSTEMS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL CISCO SYSTEMS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35 #include <sys/cdefs.h>
36 __KERNEL_RCSID(0, "$NetBSD: sctp6_usrreq.c,v 1.24 2022/11/04 09:01:53 ozaki-r Exp $");
37
38 #ifdef _KERNEL_OPT
39 #include "opt_inet.h"
40 #include "opt_ipsec.h"
41 #include "opt_sctp.h"
42 #include "opt_net_mpsafe.h"
43 #endif /* _KERNEL_OPT */
44
45 #include <sys/param.h>
46 #include <sys/kernel.h>
47 #include <sys/mbuf.h>
48 #include <sys/domain.h>
49 #include <sys/protosw.h>
50 #include <sys/socket.h>
51 #include <sys/malloc.h>
52 #include <sys/socketvar.h>
53 #include <sys/sysctl.h>
54 #include <sys/errno.h>
55 #include <sys/stat.h>
56 #include <sys/systm.h>
57 #include <sys/syslog.h>
58 #include <sys/proc.h>
59 #include <net/if.h>
60 #include <net/route.h>
61 #include <net/if_types.h>
62 #include <netinet/in.h>
63 #include <netinet/in_systm.h>
64 #include <netinet/ip.h>
65 #include <netinet/in_pcb.h>
66 #include <netinet/in_var.h>
67 #include <netinet/ip_var.h>
68 #include <netinet/sctp_pcb.h>
69 #include <netinet/sctp_header.h>
70 #include <netinet/sctp_var.h>
71 #include <netinet/sctputil.h>
72 #include <netinet/sctp_output.h>
73 #include <netinet/sctp_input.h>
74 #include <netinet/sctp_asconf.h>
75 #include <netinet/sctp_route.h>
76 #include <netinet6/ip6_var.h>
77 #include <netinet6/scope6_var.h>
78 #include <netinet/ip6.h>
79 #include <netinet6/in6_pcb.h>
80 #include <netinet/icmp6.h>
81 #include <netinet6/sctp6_var.h>
82 #include <netinet6/ip6protosw.h>
83
84 #ifdef IPSEC
85 #include <netipsec/ipsec.h>
86 #include <netipsec/ipsec6.h>
87 #endif /*IPSEC*/
88
89 #if defined(NFAITH) && NFAITH > 0
90 #include <net/if_faith.h>
91 #endif
92
93 #if defined(HAVE_NRL_INPCB) || defined(__FreeBSD__)
94 #ifndef in6pcb
95 #define in6pcb inpcb
96 #endif
97 #ifndef sotoin6pcb
98 #define sotoin6pcb sotoinpcb
99 #endif
100 #endif
101
102 #ifdef SCTP_DEBUG
103 extern u_int32_t sctp_debug_on;
104 #endif
105
106 static int sctp6_detach(struct socket *so);
107
108 extern int sctp_no_csum_on_loopback;
109
110 int
111 sctp6_input(struct mbuf **mp, int *offp, int proto)
112 {
113 struct mbuf *m = *mp;
114 struct ip6_hdr *ip6;
115 struct sctphdr *sh;
116 struct sctp_inpcb *in6p = NULL;
117 struct sctp_nets *net;
118 int refcount_up = 0;
119 u_int32_t check, calc_check;
120 struct inpcb *in6p_ip;
121 struct sctp_chunkhdr *ch;
122 struct mbuf *opts = NULL;
123 int length, mlen, offset, iphlen;
124 u_int8_t ecn_bits;
125 struct sctp_tcb *stcb = NULL;
126 int off = *offp;
127 int s;
128
129 ip6 = mtod(m, struct ip6_hdr *);
130 /* Ensure that (sctphdr + sctp_chunkhdr) in a row. */
131 IP6_EXTHDR_GET(sh, struct sctphdr *, m, off, sizeof(*sh) + sizeof(*ch));
132 if (sh == NULL) {
133 sctp_pegs[SCTP_HDR_DROPS]++;
134 return IPPROTO_DONE;
135 }
136 ch = (struct sctp_chunkhdr *)((vaddr_t)sh + sizeof(struct sctphdr));
137
138 iphlen = off;
139 offset = iphlen + sizeof(*sh) + sizeof(*ch);
140
141 #if defined(NFAITH) && NFAITH > 0
142 if (faithprefix(&ip6->ip6_dst))
143 goto bad;
144 #endif /* NFAITH defined and > 0 */
145 sctp_pegs[SCTP_INPKTS]++;
146 #ifdef SCTP_DEBUG
147 if (sctp_debug_on & SCTP_DEBUG_INPUT1) {
148 printf("V6 input gets a packet iphlen:%d pktlen:%d\n", iphlen, m->m_pkthdr.len);
149 }
150 #endif
151 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
152 /* No multi-cast support in SCTP */
153 sctp_pegs[SCTP_IN_MCAST]++;
154 goto bad;
155 }
156 /* destination port of 0 is illegal, based on RFC2960. */
157 if (sh->dest_port == 0)
158 goto bad;
159 if ((sctp_no_csum_on_loopback == 0) ||
160 (m_get_rcvif_NOMPSAFE(m) == NULL) ||
161 (m_get_rcvif_NOMPSAFE(m)->if_type != IFT_LOOP)) {
162 /* we do NOT validate things from the loopback if the
163 * sysctl is set to 1.
164 */
165 check = sh->checksum; /* save incoming checksum */
166 if ((check == 0) && (sctp_no_csum_on_loopback)) {
167 /* special hook for where we got a local address
168 * somehow routed across a non IFT_LOOP type interface
169 */
170 if (IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &ip6->ip6_dst))
171 goto sctp_skip_csum;
172 }
173 sh->checksum = 0; /* prepare for calc */
174 calc_check = sctp_calculate_sum(m, &mlen, iphlen);
175 if (calc_check != check) {
176 #ifdef SCTP_DEBUG
177 if (sctp_debug_on & SCTP_DEBUG_INPUT1) {
178 printf("Bad CSUM on SCTP packet calc_check:%x check:%x m:%p mlen:%d iphlen:%d\n",
179 calc_check, check, m,
180 mlen, iphlen);
181 }
182 #endif
183 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch),
184 sh, ch, &in6p, &net);
185 /* in6p's ref-count increased && stcb locked */
186 if ((in6p) && (stcb)) {
187 sctp_send_packet_dropped(stcb, net, m, iphlen, 1);
188 sctp_chunk_output((struct sctp_inpcb *)in6p, stcb, 2);
189 } else if ((in6p != NULL) && (stcb == NULL)) {
190 refcount_up = 1;
191 }
192 sctp_pegs[SCTP_BAD_CSUM]++;
193 goto bad;
194 }
195 sh->checksum = calc_check;
196 } else {
197 sctp_skip_csum:
198 mlen = m->m_pkthdr.len;
199 }
200 net = NULL;
201 /*
202 * Locate pcb and tcb for datagram
203 * sctp_findassociation_addr() wants IP/SCTP/first chunk header...
204 */
205 #ifdef SCTP_DEBUG
206 if (sctp_debug_on & SCTP_DEBUG_INPUT1) {
207 printf("V6 Find the association\n");
208 }
209 #endif
210 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch),
211 sh, ch, &in6p, &net);
212 /* in6p's ref-count increased */
213 if (in6p == NULL) {
214 struct sctp_init_chunk *init_chk, chunk_buf;
215
216 sctp_pegs[SCTP_NOPORTS]++;
217 if (ch->chunk_type == SCTP_INITIATION) {
218 /* we do a trick here to get the INIT tag,
219 * dig in and get the tag from the INIT and
220 * put it in the common header.
221 */
222 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
223 iphlen + sizeof(*sh), sizeof(*init_chk),
224 (u_int8_t *)&chunk_buf);
225 sh->v_tag = init_chk->init.initiate_tag;
226 }
227 sctp_send_abort(m, iphlen, sh, 0, NULL);
228 goto bad;
229 } else if (stcb == NULL) {
230 refcount_up = 1;
231 }
232 in6p_ip = (struct inpcb *)in6p;
233 #ifdef IPSEC
234 /*
235 * Check AH/ESP integrity.
236 */
237 if (ipsec_used && ipsec_in_reject(m, in6p_ip)) {
238 /* XXX */
239 #if 0
240 /* FIX ME: need to find right stat */
241 ipsec6stat.in_polvio++;
242 #endif
243 goto bad;
244 }
245 #endif /*IPSEC*/
246
247 /*
248 * Construct sockaddr format source address.
249 * Stuff source address and datagram in user buffer.
250 */
251 if ((in6p->ip_inp.inp.inp_flags & INP_CONTROLOPTS)
252 #ifndef __OpenBSD__
253 || (in6p->sctp_socket->so_options & SO_TIMESTAMP)
254 #endif
255 ) {
256 #if defined(__FreeBSD__) || defined(__APPLE__)
257 #if (defined(SCTP_BASE_FREEBSD) && __FreeBSD_version < 501113) || defined(__APPLE__)
258 ip6_savecontrol(in6p_ip, &opts, ip6, m);
259 #elif __FreeBSD_version >= 440000 || (defined(SCTP_BASE_FREEBSD) && __FreeBSD_version >= 501113)
260 ip6_savecontrol(in6p_ip, m, &opts);
261 #else
262 ip6_savecontrol(in6p_ip, m, &opts, NULL);
263 #endif
264 #elif defined(__NetBSD__)
265 ip6_savecontrol(in6p_ip, &opts, ip6, m);
266 #else
267 ip6_savecontrol(in6p_ip, m, &opts);
268 #endif
269 }
270
271 /*
272 * CONTROL chunk processing
273 */
274 length = ntohs(ip6->ip6_plen) + iphlen;
275 offset -= sizeof(*ch);
276 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff);
277 s = splsoftnet();
278 (void)sctp_common_input_processing(&m, iphlen, offset, length, sh, ch,
279 in6p, stcb, net, ecn_bits);
280 /* inp's ref-count reduced && stcb unlocked */
281 splx(s);
282 /* XXX this stuff below gets moved to appropriate parts later... */
283 if (m)
284 m_freem(m);
285 if (opts)
286 m_freem(opts);
287
288 if ((in6p) && refcount_up){
289 /* reduce ref-count */
290 SCTP_INP_WLOCK(in6p);
291 SCTP_INP_DECR_REF(in6p);
292 SCTP_INP_WUNLOCK(in6p);
293 }
294
295 return IPPROTO_DONE;
296
297 bad:
298 if (stcb) {
299 SCTP_TCB_UNLOCK(stcb);
300 }
301
302 if ((in6p) && refcount_up){
303 /* reduce ref-count */
304 SCTP_INP_WLOCK(in6p);
305 SCTP_INP_DECR_REF(in6p);
306 SCTP_INP_WUNLOCK(in6p);
307 }
308 if (m) {
309 m_freem(m);
310 }
311 if (opts) {
312 m_freem(opts);
313 }
314 return IPPROTO_DONE;
315 }
316
317
318 static void
319 sctp6_notify_mbuf(struct sctp_inpcb *inp,
320 struct icmp6_hdr *icmp6,
321 struct sctphdr *sh,
322 struct sctp_tcb *stcb,
323 struct sctp_nets *net)
324 {
325 unsigned int nxtsz;
326
327 if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
328 (icmp6 == NULL) || (sh == NULL)) {
329 goto out;
330 }
331
332 /* First do we even look at it? */
333 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag))
334 goto out;
335
336 if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) {
337 /* not PACKET TO BIG */
338 goto out;
339 }
340 /*
341 * ok we need to look closely. We could even get smarter and
342 * look at anyone that we sent to in case we get a different
343 * ICMP that tells us there is no way to reach a host, but for
344 * this impl, all we care about is MTU discovery.
345 */
346 nxtsz = ntohl(icmp6->icmp6_mtu);
347 /* Stop any PMTU timer */
348 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL);
349
350 /* Adjust destination size limit */
351 if (net->mtu > nxtsz) {
352 net->mtu = nxtsz;
353 }
354 /* now what about the ep? */
355 if (stcb->asoc.smallest_mtu > nxtsz) {
356 struct sctp_tmit_chunk *chk;
357 struct sctp_stream_out *strm;
358 /* Adjust that too */
359 stcb->asoc.smallest_mtu = nxtsz;
360 /* now off to subtract IP_DF flag if needed */
361
362 TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
363 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) {
364 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
365 }
366 }
367 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
368 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) {
369 /*
370 * For this guy we also mark for immediate
371 * resend since we sent to big of chunk
372 */
373 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
374 if (chk->sent != SCTP_DATAGRAM_RESEND)
375 stcb->asoc.sent_queue_retran_cnt++;
376 chk->sent = SCTP_DATAGRAM_RESEND;
377 chk->rec.data.doing_fast_retransmit = 0;
378
379 chk->sent = SCTP_DATAGRAM_RESEND;
380 /* Clear any time so NO RTT is being done */
381 chk->sent_rcv_time.tv_sec = 0;
382 chk->sent_rcv_time.tv_usec = 0;
383 stcb->asoc.total_flight -= chk->send_size;
384 net->flight_size -= chk->send_size;
385 }
386 }
387 TAILQ_FOREACH(strm, &stcb->asoc.out_wheel, next_spoke) {
388 TAILQ_FOREACH(chk, &strm->outqueue, sctp_next) {
389 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) {
390 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
391 }
392 }
393 }
394 }
395 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL);
396 out:
397 if (inp) {
398 /* reduce inp's ref-count */
399 SCTP_INP_WLOCK(inp);
400 SCTP_INP_DECR_REF(inp);
401 SCTP_INP_WUNLOCK(inp);
402 }
403 if (stcb) {
404 SCTP_TCB_UNLOCK(stcb);
405 }
406 }
407
408
409 void *
410 sctp6_ctlinput(int cmd, const struct sockaddr *pktdst, void *d)
411 {
412 struct sctphdr sh;
413 struct ip6ctlparam *ip6cp = NULL;
414 int s, cm;
415
416 if (pktdst->sa_family != AF_INET6 ||
417 pktdst->sa_len != sizeof(struct sockaddr_in6))
418 return NULL;
419
420 if ((unsigned)cmd >= PRC_NCMDS)
421 return NULL;
422 if (PRC_IS_REDIRECT(cmd)) {
423 d = NULL;
424 } else if (inet6ctlerrmap[cmd] == 0) {
425 return NULL;
426 }
427
428 /* if the parameter is from icmp6, decode it. */
429 if (d != NULL) {
430 ip6cp = (struct ip6ctlparam *)d;
431 } else {
432 ip6cp = (struct ip6ctlparam *)NULL;
433 }
434
435 if (ip6cp) {
436 /*
437 * XXX: We assume that when IPV6 is non NULL,
438 * M and OFF are valid.
439 */
440 /* check if we can safely examine src and dst ports */
441 struct sctp_inpcb *inp;
442 struct sctp_tcb *stcb;
443 struct sctp_nets *net;
444 struct sockaddr_in6 final;
445
446 if (ip6cp->ip6c_m == NULL ||
447 (size_t)ip6cp->ip6c_m->m_pkthdr.len < (ip6cp->ip6c_off + sizeof(sh)))
448 return NULL;
449
450 memset(&sh, 0, sizeof(sh));
451 memset(&final, 0, sizeof(final));
452 inp = NULL;
453 net = NULL;
454 m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh),
455 (void *)&sh);
456 ip6cp->ip6c_src->sin6_port = sh.src_port;
457 final.sin6_len = sizeof(final);
458 final.sin6_family = AF_INET6;
459 final.sin6_addr = ((const struct sockaddr_in6 *)pktdst)->sin6_addr;
460 final.sin6_port = sh.dest_port;
461 s = splsoftnet();
462 stcb = sctp_findassociation_addr_sa(sin6tosa(ip6cp->ip6c_src),
463 sin6tosa(&final),
464 &inp, &net, 1);
465 /* inp's ref-count increased && stcb locked */
466 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
467 if (cmd == PRC_MSGSIZE) {
468 sctp6_notify_mbuf(inp,
469 ip6cp->ip6c_icmp6,
470 &sh,
471 stcb,
472 net);
473 /* inp's ref-count reduced && stcb unlocked */
474 } else {
475 if (cmd == PRC_HOSTDEAD) {
476 cm = EHOSTUNREACH;
477 } else {
478 cm = inet6ctlerrmap[cmd];
479 }
480 sctp_notify(inp, cm, &sh, sin6tosa(&final),
481 stcb, net);
482 /* inp's ref-count reduced && stcb unlocked */
483 }
484 } else {
485 if (PRC_IS_REDIRECT(cmd) && inp) {
486 in6pcb_rtchange((struct inpcb *)inp, inet6ctlerrmap[cmd]);
487 }
488 if (inp) {
489 /* reduce inp's ref-count */
490 SCTP_INP_WLOCK(inp);
491 SCTP_INP_DECR_REF(inp);
492 SCTP_INP_WUNLOCK(inp);
493 }
494 if (stcb) {
495 SCTP_TCB_UNLOCK(stcb);
496 }
497 }
498 splx(s);
499 }
500 return NULL;
501 }
502
503 /*
504 * this routine can probably be collasped into the one in sctp_userreq.c
505 * since they do the same thing and now we lookup with a sockaddr
506 */
507 #ifdef __FreeBSD__
508 static int
509 sctp6_getcred(SYSCTL_HANDLER_ARGS)
510 {
511 struct sockaddr_in6 addrs[2];
512 struct sctp_inpcb *inp;
513 struct sctp_nets *net;
514 struct sctp_tcb *stcb;
515 int error, s;
516
517 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
518 error = suser(req->td);
519 #else
520 error = suser(req->p);
521 #endif
522 if (error)
523 return (error);
524
525 if (req->newlen != sizeof(addrs))
526 return (EINVAL);
527 if (req->oldlen != sizeof(struct ucred))
528 return (EINVAL);
529 error = SYSCTL_IN(req, addrs, sizeof(addrs));
530 if (error)
531 return (error);
532 s = splsoftnet();
533
534 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[0]),
535 sin6tosa(&addrs[1]),
536 &inp, &net, 1);
537 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
538 error = ENOENT;
539 if (inp) {
540 SCTP_INP_WLOCK(inp);
541 SCTP_INP_DECR_REF(inp);
542 SCTP_INP_WUNLOCK(inp);
543 }
544 goto out;
545 }
546 error = SYSCTL_OUT(req, inp->sctp_socket->so_cred,
547 sizeof(struct ucred));
548
549 SCTP_TCB_UNLOCK (stcb);
550 out:
551 splx(s);
552 return (error);
553 }
554
555 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW,
556 0, 0,
557 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection");
558
559 #endif
560
561 /* This is the same as the sctp_abort() could be made common */
562 static int
563 sctp6_abort(struct socket *so)
564 {
565 int s;
566 struct sctp_inpcb *inp;
567
568 KASSERT(solocked(so));
569
570 s = splsoftnet();
571 inp = (struct sctp_inpcb *)so->so_pcb;
572 if (inp == 0)
573 return EINVAL; /* ??? possible? panic instead? */
574 soisdisconnected(so);
575 sctp_inpcb_free(inp, 1);
576 splx(s);
577 return 0;
578 }
579
580 static int
581 sctp6_attach(struct socket *so, int proto)
582 {
583 struct in6pcb *inp6;
584 int error;
585 struct sctp_inpcb *inp;
586
587 sosetlock(so);
588 inp = (struct sctp_inpcb *)so->so_pcb;
589 if (inp != NULL)
590 return EINVAL;
591
592 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
593 error = soreserve(so, sctp_sendspace, sctp_recvspace);
594 if (error)
595 return error;
596 }
597 error = sctp_inpcb_alloc(so);
598 if (error)
599 return error;
600 inp = (struct sctp_inpcb *)so->so_pcb;
601 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */
602 inp6 = (struct in6pcb *)inp;
603
604 inp->inp_vflag |= INP_IPV6;
605 if (ip6_v6only) {
606 inp6->in6p_flags |= IN6P_IPV6_V6ONLY;
607 }
608 so->so_send = sctp_sosend;
609
610 #ifdef IPSEC
611 inp6->in6p_af = proto;
612 #endif
613 inp6->in6p_hops = -1; /* use kernel default */
614 inp6->in6p_cksum = -1; /* just to be sure */
615 #ifdef INET
616 /*
617 * XXX: ugly!!
618 * IPv4 TTL initialization is necessary for an IPv6 socket as well,
619 * because the socket may be bound to an IPv6 wildcard address,
620 * which may match an IPv4-mapped IPv6 address.
621 */
622 inp->inp_ip_ttl = ip_defttl;
623 #endif
624 /*
625 * Hmm what about the IPSEC stuff that is missing here but
626 * in sctp_attach()?
627 */
628 return 0;
629 }
630
631 static int
632 sctp6_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
633 {
634 struct sctp_inpcb *inp;
635 struct in6pcb *inp6;
636 int error;
637
638 KASSERT(solocked(so));
639
640 inp = (struct sctp_inpcb *)so->so_pcb;
641 if (inp == 0)
642 return EINVAL;
643
644 inp6 = (struct in6pcb *)inp;
645 inp->inp_vflag &= ~INP_IPV4;
646 inp->inp_vflag |= INP_IPV6;
647
648 if (nam != NULL && (inp6->in6p_flags & IN6P_IPV6_V6ONLY) == 0) {
649 if (nam->sa_family == AF_INET) {
650 /* binding v4 addr to v6 socket, so reset flags */
651 inp->inp_vflag |= INP_IPV4;
652 inp->inp_vflag &= ~INP_IPV6;
653 } else {
654 struct sockaddr_in6 *sin6_p;
655 sin6_p = (struct sockaddr_in6 *)nam;
656
657 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) {
658 inp->inp_vflag |= INP_IPV4;
659 }
660 else if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
661 struct sockaddr_in sin;
662 in6_sin6_2_sin(&sin, sin6_p);
663 inp->inp_vflag |= INP_IPV4;
664 inp->inp_vflag &= ~INP_IPV6;
665 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, l);
666 return error;
667 }
668 }
669 } else if (nam != NULL) {
670 /* IPV6_V6ONLY socket */
671 if (nam->sa_family == AF_INET) {
672 /* can't bind v4 addr to v6 only socket! */
673 return EINVAL;
674 } else {
675 struct sockaddr_in6 *sin6_p;
676 sin6_p = (struct sockaddr_in6 *)nam;
677
678 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr))
679 /* can't bind v4-mapped addrs either! */
680 /* NOTE: we don't support SIIT */
681 return EINVAL;
682 }
683 }
684 error = sctp_inpcb_bind(so, nam, l);
685 return error;
686 }
687
688 /*This could be made common with sctp_detach() since they are identical */
689 static int
690 sctp6_detach(struct socket *so)
691 {
692 struct sctp_inpcb *inp;
693
694 inp = (struct sctp_inpcb *)so->so_pcb;
695 if (inp == 0)
696 return EINVAL;
697
698 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
699 (so->so_rcv.sb_cc > 0))
700 sctp_inpcb_free(inp, 1);
701 else
702 sctp_inpcb_free(inp, 0);
703 return 0;
704 }
705
706 static int
707 sctp6_disconnect(struct socket *so)
708 {
709 struct sctp_inpcb *inp;
710
711 inp = (struct sctp_inpcb *)so->so_pcb;
712 if (inp == NULL) {
713 return (ENOTCONN);
714 }
715 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
716 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
717 /* No connection */
718 return (ENOTCONN);
719 } else {
720 int some_on_streamwheel = 0;
721 struct sctp_association *asoc;
722 struct sctp_tcb *stcb;
723
724 stcb = LIST_FIRST(&inp->sctp_asoc_list);
725 if (stcb == NULL) {
726 return (EINVAL);
727 }
728 asoc = &stcb->asoc;
729 if (!TAILQ_EMPTY(&asoc->out_wheel)) {
730 /* Check to see if some data queued */
731 struct sctp_stream_out *outs;
732 TAILQ_FOREACH(outs, &asoc->out_wheel,
733 next_spoke) {
734 if (!TAILQ_EMPTY(&outs->outqueue)) {
735 some_on_streamwheel = 1;
736 break;
737 }
738 }
739 }
740
741 if (TAILQ_EMPTY(&asoc->send_queue) &&
742 TAILQ_EMPTY(&asoc->sent_queue) &&
743 (some_on_streamwheel == 0)) {
744 /* nothing queued to send, so I'm done... */
745 if ((SCTP_GET_STATE(asoc) !=
746 SCTP_STATE_SHUTDOWN_SENT) &&
747 (SCTP_GET_STATE(asoc) !=
748 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
749 /* only send SHUTDOWN the first time */
750 #ifdef SCTP_DEBUG
751 if (sctp_debug_on & SCTP_DEBUG_OUTPUT4) {
752 printf("%s:%d sends a shutdown\n",
753 __FILE__,
754 __LINE__
755 );
756 }
757 #endif
758 sctp_send_shutdown(stcb, stcb->asoc.primary_destination);
759 sctp_chunk_output(stcb->sctp_ep, stcb, 1);
760 asoc->state = SCTP_STATE_SHUTDOWN_SENT;
761 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
762 stcb->sctp_ep, stcb,
763 asoc->primary_destination);
764 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
765 stcb->sctp_ep, stcb,
766 asoc->primary_destination);
767 }
768 } else {
769 /*
770 * we still got (or just got) data to send,
771 * so set SHUTDOWN_PENDING
772 */
773 /*
774 * XXX sockets draft says that MSG_EOF should
775 * be sent with no data. currently, we will
776 * allow user data to be sent first and move
777 * to SHUTDOWN-PENDING
778 */
779 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
780 }
781 return (0);
782 }
783 } else {
784 /* UDP model does not support this */
785 return EOPNOTSUPP;
786 }
787 }
788
789 static int
790 sctp6_recvoob(struct socket *so, struct mbuf *m, int flags)
791 {
792 KASSERT(solocked(so));
793
794 return EOPNOTSUPP;
795 }
796
797 static int
798 sctp6_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
799 struct mbuf *control, struct lwp *l)
800 {
801 struct sctp_inpcb *inp;
802 struct in6pcb *inp6;
803 #ifdef INET
804 struct sockaddr_in6 *sin6;
805 #endif /* INET */
806 /* No SPL needed since sctp_output does this */
807
808 inp = (struct sctp_inpcb *)so->so_pcb;
809 if (inp == NULL) {
810 if (control) {
811 m_freem(control);
812 control = NULL;
813 }
814 m_freem(m);
815 return EINVAL;
816 }
817 inp6 = (struct in6pcb *)inp;
818 /* For the TCP model we may get a NULL addr, if we
819 * are a connected socket thats ok.
820 */
821 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) &&
822 (nam == NULL)) {
823 goto connected_type;
824 }
825 if (nam == NULL) {
826 m_freem(m);
827 if (control) {
828 m_freem(control);
829 control = NULL;
830 }
831 return (EDESTADDRREQ);
832 }
833
834 #ifdef INET
835 sin6 = (struct sockaddr_in6 *)nam;
836 /*
837 * XXX XXX XXX Check sin6->sin6_len?
838 */
839 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) {
840 /*
841 * if IPV6_V6ONLY flag, we discard datagrams
842 * destined to a v4 addr or v4-mapped addr
843 */
844 if (nam->sa_family == AF_INET) {
845 return EINVAL;
846 }
847 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
848 return EINVAL;
849 }
850 }
851
852 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
853 if (!ip6_v6only) {
854 struct sockaddr_in sin;
855 /* convert v4-mapped into v4 addr and send */
856 in6_sin6_2_sin(&sin, sin6);
857 return sctp_send(so, m, (struct sockaddr *)&sin,
858 control, l);
859 } else {
860 /* mapped addresses aren't enabled */
861 return EINVAL;
862 }
863 }
864 #endif /* INET */
865 connected_type:
866 /* now what about control */
867 if (control) {
868 if (inp->control) {
869 printf("huh? control set?\n");
870 m_freem(inp->control);
871 inp->control = NULL;
872 }
873 inp->control = control;
874 }
875 /* add it in possibly */
876 if ((inp->pkt) &&
877 (inp->pkt->m_flags & M_PKTHDR)) {
878 struct mbuf *x;
879 int c_len;
880
881 c_len = 0;
882 /* How big is it */
883 for (x=m;x;x = x->m_next) {
884 c_len += x->m_len;
885 }
886 inp->pkt->m_pkthdr.len += c_len;
887 }
888 /* Place the data */
889 if (inp->pkt) {
890 inp->pkt_last->m_next = m;
891 inp->pkt_last = m;
892 } else {
893 inp->pkt_last = inp->pkt = m;
894 }
895 if ((so->so_state & SS_MORETOCOME) == 0) {
896 /*
897 * note with the current version this code will only be
898 * used by OpenBSD, NetBSD and FreeBSD have methods for
899 * re-defining sosend() to use sctp_sosend(). One can
900 * optionaly switch back to this code (by changing back
901 * the defininitions but this is not advisable.
902 */
903 int ret;
904 ret = sctp_output(inp, inp->pkt , nam, inp->control, l, 0);
905 inp->pkt = NULL;
906 inp->control = NULL;
907 return (ret);
908 } else {
909 return (0);
910 }
911 }
912
913 static int
914 sctp6_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
915 {
916 KASSERT(solocked(so));
917
918 m_freem(m);
919 m_freem(control);
920
921 return EOPNOTSUPP;
922 }
923
924 static int
925 sctp6_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
926 {
927 int error = 0;
928 struct sctp_inpcb *inp;
929 struct in6pcb *inp6;
930 struct sctp_tcb *stcb;
931 #ifdef INET
932 struct sockaddr_in6 *sin6;
933 struct sockaddr_storage ss;
934 #endif /* INET */
935
936 inp6 = (struct in6pcb *)so->so_pcb;
937 inp = (struct sctp_inpcb *)so->so_pcb;
938 if (inp == 0) {
939 return (ECONNRESET); /* I made the same as TCP since
940 * we are not setup? */
941 }
942 SCTP_ASOC_CREATE_LOCK(inp);
943 SCTP_INP_RLOCK(inp);
944 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
945 SCTP_PCB_FLAGS_UNBOUND) {
946 /* Bind a ephemeral port */
947 SCTP_INP_RUNLOCK(inp);
948 error = sctp6_bind(so, NULL, l);
949 if (error) {
950 SCTP_ASOC_CREATE_UNLOCK(inp);
951
952 return (error);
953 }
954 SCTP_INP_RLOCK(inp);
955 }
956
957 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
958 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
959 /* We are already connected AND the TCP model */
960 SCTP_INP_RUNLOCK(inp);
961 SCTP_ASOC_CREATE_UNLOCK(inp);
962 return (EADDRINUSE);
963 }
964
965 #ifdef INET
966 sin6 = (struct sockaddr_in6 *)nam;
967
968 /*
969 * XXX XXX XXX Check sin6->sin6_len?
970 */
971
972 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) {
973 /*
974 * if IPV6_V6ONLY flag, ignore connections
975 * destined to a v4 addr or v4-mapped addr
976 */
977 if (nam->sa_family == AF_INET) {
978 SCTP_INP_RUNLOCK(inp);
979 SCTP_ASOC_CREATE_UNLOCK(inp);
980 return EINVAL;
981 }
982 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
983 SCTP_INP_RUNLOCK(inp);
984 SCTP_ASOC_CREATE_UNLOCK(inp);
985 return EINVAL;
986 }
987 }
988
989 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
990 if (!ip6_v6only) {
991 /* convert v4-mapped into v4 addr */
992 in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6);
993 nam = (struct sockaddr *)&ss;
994 } else {
995 /* mapped addresses aren't enabled */
996 SCTP_INP_RUNLOCK(inp);
997 SCTP_ASOC_CREATE_UNLOCK(inp);
998 return EINVAL;
999 }
1000 }
1001 #endif /* INET */
1002
1003 /* Now do we connect? */
1004 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1005 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1006 if (stcb) {
1007 SCTP_TCB_UNLOCK (stcb);
1008 }
1009 SCTP_INP_RUNLOCK(inp);
1010 } else {
1011 SCTP_INP_RUNLOCK(inp);
1012 SCTP_INP_WLOCK(inp);
1013 SCTP_INP_INCR_REF(inp);
1014 SCTP_INP_WUNLOCK(inp);
1015 stcb = sctp_findassociation_ep_addr(&inp, nam, NULL, NULL, NULL);
1016 if (stcb == NULL) {
1017 SCTP_INP_WLOCK(inp);
1018 SCTP_INP_DECR_REF(inp);
1019 SCTP_INP_WUNLOCK(inp);
1020 }
1021 }
1022
1023 if (stcb != NULL) {
1024 /* Already have or am bring up an association */
1025 SCTP_ASOC_CREATE_UNLOCK(inp);
1026 SCTP_TCB_UNLOCK (stcb);
1027 return (EALREADY);
1028 }
1029 /* We are GOOD to go */
1030 stcb = sctp_aloc_assoc(inp, nam, 1, &error, 0);
1031 SCTP_ASOC_CREATE_UNLOCK(inp);
1032 if (stcb == NULL) {
1033 /* Gak! no memory */
1034 return (error);
1035 }
1036 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1037 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1038 /* Set the connected flag so we can queue data */
1039 soisconnecting(so);
1040 }
1041 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
1042 SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1043 sctp_send_initiate(inp, stcb);
1044 SCTP_TCB_UNLOCK (stcb);
1045 return error;
1046 }
1047
1048 static int
1049 sctp6_connect2(struct socket *so, struct socket *so2)
1050 {
1051 KASSERT(solocked(so));
1052
1053 return EOPNOTSUPP;
1054 }
1055
1056 static int
1057 sctp6_getaddr(struct socket *so, struct sockaddr *nam)
1058 {
1059 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
1060 struct sctp_inpcb *inp;
1061 int error;
1062
1063 /*
1064 * Do the malloc first in case it blocks.
1065 */
1066 memset(sin6, 0, sizeof(*sin6));
1067 sin6->sin6_family = AF_INET6;
1068 sin6->sin6_len = sizeof(*sin6);
1069
1070 inp = (struct sctp_inpcb *)so->so_pcb;
1071 if (inp == NULL) {
1072 return ECONNRESET;
1073 }
1074
1075 sin6->sin6_port = inp->sctp_lport;
1076 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1077 /* For the bound all case you get back 0 */
1078 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1079 struct sctp_tcb *stcb;
1080 const struct sockaddr_in6 *sin_a6;
1081 struct sctp_nets *net;
1082 int fnd;
1083
1084 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1085 if (stcb == NULL) {
1086 goto notConn6;
1087 }
1088 fnd = 0;
1089 sin_a6 = NULL;
1090 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1091 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro);
1092 if (sin_a6->sin6_family == AF_INET6) {
1093 fnd = 1;
1094 break;
1095 }
1096 }
1097 if ((!fnd) || (sin_a6 == NULL)) {
1098 /* punt */
1099 goto notConn6;
1100 }
1101 sin6->sin6_addr = sctp_ipv6_source_address_selection(
1102 inp, stcb, &net->ro, net, 0);
1103
1104 } else {
1105 /* For the bound all case you get back 0 */
1106 notConn6:
1107 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr));
1108 }
1109 } else {
1110 /* Take the first IPv6 address in the list */
1111 struct sctp_laddr *laddr;
1112 int fnd = 0;
1113 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1114 if (laddr->ifa->ifa_addr->sa_family == AF_INET6) {
1115 struct sockaddr_in6 *sin_a;
1116 sin_a = (struct sockaddr_in6 *)laddr->ifa->ifa_addr;
1117 sin6->sin6_addr = sin_a->sin6_addr;
1118 fnd = 1;
1119 break;
1120 }
1121 }
1122 if (!fnd) {
1123 return ENOENT;
1124 }
1125 }
1126 /* Scoping things for v6 */
1127 if ((error = sa6_recoverscope(sin6)) != 0)
1128 return (error);
1129
1130 return (0);
1131 }
1132
1133 static int
1134 sctp6_peeraddr(struct socket *so, struct sockaddr *nam)
1135 {
1136 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
1137 int fnd, error;
1138 const struct sockaddr_in6 *sin_a6;
1139 struct sctp_inpcb *inp;
1140 struct sctp_tcb *stcb;
1141 struct sctp_nets *net;
1142 /*
1143 * Do the malloc first in case it blocks.
1144 */
1145 inp = (struct sctp_inpcb *)so->so_pcb;
1146 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
1147 /* UDP type and listeners will drop out here */
1148 return (ENOTCONN);
1149 }
1150 memset(sin6, 0, sizeof(*sin6));
1151 sin6->sin6_family = AF_INET6;
1152 sin6->sin6_len = sizeof(*sin6);
1153
1154 /* We must recapture incase we blocked */
1155 inp = (struct sctp_inpcb *)so->so_pcb;
1156 if (inp == NULL) {
1157 return ECONNRESET;
1158 }
1159 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1160 if (stcb == NULL) {
1161 return ECONNRESET;
1162 }
1163 fnd = 0;
1164 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1165 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro);
1166 if (sin_a6->sin6_family == AF_INET6) {
1167 fnd = 1;
1168 sin6->sin6_port = stcb->rport;
1169 sin6->sin6_addr = sin_a6->sin6_addr;
1170 break;
1171 }
1172 }
1173 if (!fnd) {
1174 /* No IPv4 address */
1175 return ENOENT;
1176 }
1177 if ((error = sa6_recoverscope(sin6)) != 0)
1178 return (error);
1179
1180 return (0);
1181 }
1182
1183 static int
1184 sctp6_sockaddr(struct socket *so, struct sockaddr *nam)
1185 {
1186 struct in6pcb *inp6 = sotoin6pcb(so);
1187 int error;
1188
1189 if (inp6 == NULL)
1190 return EINVAL;
1191
1192 /* allow v6 addresses precedence */
1193 error = sctp6_getaddr(so, nam);
1194 if (error) {
1195 /* try v4 next if v6 failed */
1196 error = sctp_sockaddr(so, nam);
1197 if (error) {
1198 return (error);
1199 }
1200
1201 /* if I'm V6ONLY, convert it to v4-mapped */
1202 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) {
1203 struct sockaddr_in6 sin6;
1204 in6_sin_2_v4mapsin6((struct sockaddr_in *)nam, &sin6);
1205 memcpy(nam, &sin6, sizeof(struct sockaddr_in6));
1206 }
1207 }
1208 return (error);
1209 }
1210
1211 #if 0
1212 static int
1213 sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam)
1214 {
1215 struct in6pcb *inp6 = sotoin6pcb(so);
1216 int error;
1217
1218 if (inp6 == NULL)
1219 return EINVAL;
1220
1221 /* allow v6 addresses precedence */
1222 error = sctp6_peeraddr(so, nam);
1223 if (error) {
1224 /* try v4 next if v6 failed */
1225 error = sctp_peeraddr(so, nam);
1226 if (error) {
1227 return (error);
1228 }
1229 /* if I'm V6ONLY, convert it to v4-mapped */
1230 if ((inp6->in6p_flags & IN6P_IPV6_V6ONLY)) {
1231 struct sockaddr_in6 sin6;
1232 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
1233 memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
1234 }
1235 }
1236 return error;
1237 }
1238 #endif
1239
1240 static int
1241 sctp6_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1242 {
1243 int error = 0;
1244 int family;
1245
1246 if (cmd == SIOCCONNECTX) {
1247 solock(so);
1248 error = sctp_do_connect_x(so, nam, curlwp, 0);
1249 sounlock(so);
1250 } else if (cmd == SIOCCONNECTXDEL) {
1251 solock(so);
1252 error = sctp_do_connect_x(so, nam, curlwp, 1);
1253 sounlock(so);
1254 } else {
1255 family = so->so_proto->pr_domain->dom_family;
1256 switch (family) {
1257 #ifdef INET
1258 case PF_INET:
1259 error = in_control(so, cmd, nam, ifp);
1260 break;
1261 #endif
1262 #ifdef INET6
1263 case PF_INET6:
1264 error = in6_control(so, cmd, nam, ifp);
1265 break;
1266 #endif
1267 default:
1268 error = EAFNOSUPPORT;
1269 }
1270 }
1271 return (error);
1272 }
1273
1274 static int
1275 sctp6_accept(struct socket *so, struct sockaddr *nam)
1276 {
1277 return sctp_accept(so, nam);
1278 }
1279
1280 static int
1281 sctp6_stat(struct socket *so, struct stat *ub)
1282 {
1283 return 0;
1284 }
1285
1286 static int
1287 sctp6_listen(struct socket *so, struct lwp *l)
1288 {
1289 return sctp_listen(so, l);
1290 }
1291
1292 static int
1293 sctp6_shutdown(struct socket *so)
1294 {
1295 return sctp_shutdown(so);
1296 }
1297
1298 static int
1299 sctp6_rcvd(struct socket *so, int flags, struct lwp *l)
1300 {
1301 KASSERT(solocked(so));
1302
1303 return sctp_rcvd(so, flags, l);
1304 }
1305
1306 static int
1307 sctp6_purgeif(struct socket *so, struct ifnet *ifp)
1308 {
1309 struct ifaddr *ifa;
1310 /* FIXME NOMPSAFE */
1311 IFADDR_READER_FOREACH(ifa, ifp) {
1312 if (ifa->ifa_addr->sa_family == PF_INET6) {
1313 sctp_delete_ip_address(ifa);
1314 }
1315 }
1316
1317 #ifndef NET_MPSAFE
1318 mutex_enter(softnet_lock);
1319 #endif
1320 in6_purgeif(ifp);
1321 #ifndef NET_MPSAFE
1322 mutex_exit(softnet_lock);
1323 #endif
1324
1325 return 0;
1326 }
1327
1328 PR_WRAP_USRREQS(sctp6)
1329 #define sctp6_attach sctp6_attach_wrapper
1330 #define sctp6_detach sctp6_detach_wrapper
1331 #define sctp6_accept sctp6_accept_wrapper
1332 #define sctp6_bind sctp6_bind_wrapper
1333 #define sctp6_listen sctp6_listen_wrapper
1334 #define sctp6_connect sctp6_connect_wrapper
1335 #define sctp6_connect2 sctp6_connect2_wrapper
1336 #define sctp6_disconnect sctp6_disconnect_wrapper
1337 #define sctp6_shutdown sctp6_shutdown_wrapper
1338 #define sctp6_abort sctp6_abort_wrapper
1339 #define sctp6_ioctl sctp6_ioctl_wrapper
1340 #define sctp6_stat sctp6_stat_wrapper
1341 #define sctp6_peeraddr sctp6_peeraddr_wrapper
1342 #define sctp6_sockaddr sctp6_sockaddr_wrapper
1343 #define sctp6_rcvd sctp6_rcvd_wrapper
1344 #define sctp6_recvoob sctp6_recvoob_wrapper
1345 #define sctp6_send sctp6_send_wrapper
1346 #define sctp6_sendoob sctp6_sendoob_wrapper
1347 #define sctp6_purgeif sctp6_purgeif_wrapper
1348
1349 const struct pr_usrreqs sctp6_usrreqs = {
1350 .pr_attach = sctp6_attach,
1351 .pr_detach = sctp6_detach,
1352 .pr_accept = sctp6_accept,
1353 .pr_bind = sctp6_bind,
1354 .pr_listen = sctp6_listen,
1355 .pr_connect = sctp6_connect,
1356 .pr_connect2 = sctp6_connect2,
1357 .pr_disconnect = sctp6_disconnect,
1358 .pr_shutdown = sctp6_shutdown,
1359 .pr_abort = sctp6_abort,
1360 .pr_ioctl = sctp6_ioctl,
1361 .pr_stat = sctp6_stat,
1362 .pr_peeraddr = sctp6_peeraddr,
1363 .pr_sockaddr = sctp6_sockaddr,
1364 .pr_rcvd = sctp6_rcvd,
1365 .pr_recvoob = sctp6_recvoob,
1366 .pr_send = sctp6_send,
1367 .pr_sendoob = sctp6_sendoob,
1368 .pr_purgeif = sctp6_purgeif,
1369 };
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