1 /* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */
2 /* $NetBSD: sctp6_usrreq.c,v 1.26 2024/07/06 10:09:15 andvar 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 1.26 2024/07/06 10:09:15 andvar 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
sctp6_input(struct mbuf ** mp,int * offp,int proto)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 m_freem(m);
284 m_freem(opts);
285
286 if ((in6p) && refcount_up){
287 /* reduce ref-count */
288 SCTP_INP_WLOCK(in6p);
289 SCTP_INP_DECR_REF(in6p);
290 SCTP_INP_WUNLOCK(in6p);
291 }
292
293 return IPPROTO_DONE;
294
295 bad:
296 if (stcb) {
297 SCTP_TCB_UNLOCK(stcb);
298 }
299
300 if ((in6p) && refcount_up){
301 /* reduce ref-count */
302 SCTP_INP_WLOCK(in6p);
303 SCTP_INP_DECR_REF(in6p);
304 SCTP_INP_WUNLOCK(in6p);
305 }
306 m_freem(m);
307 m_freem(opts);
308 return IPPROTO_DONE;
309 }
310
311
312 static void
sctp6_notify_mbuf(struct sctp_inpcb * inp,struct icmp6_hdr * icmp6,struct sctphdr * sh,struct sctp_tcb * stcb,struct sctp_nets * net)313 sctp6_notify_mbuf(struct sctp_inpcb *inp,
314 struct icmp6_hdr *icmp6,
315 struct sctphdr *sh,
316 struct sctp_tcb *stcb,
317 struct sctp_nets *net)
318 {
319 unsigned int nxtsz;
320
321 if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
322 (icmp6 == NULL) || (sh == NULL)) {
323 goto out;
324 }
325
326 /* First do we even look at it? */
327 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag))
328 goto out;
329
330 if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) {
331 /* not PACKET TO BIG */
332 goto out;
333 }
334 /*
335 * ok we need to look closely. We could even get smarter and
336 * look at anyone that we sent to in case we get a different
337 * ICMP that tells us there is no way to reach a host, but for
338 * this impl, all we care about is MTU discovery.
339 */
340 nxtsz = ntohl(icmp6->icmp6_mtu);
341 /* Stop any PMTU timer */
342 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL);
343
344 /* Adjust destination size limit */
345 if (net->mtu > nxtsz) {
346 net->mtu = nxtsz;
347 }
348 /* now what about the ep? */
349 if (stcb->asoc.smallest_mtu > nxtsz) {
350 struct sctp_tmit_chunk *chk;
351 struct sctp_stream_out *strm;
352 /* Adjust that too */
353 stcb->asoc.smallest_mtu = nxtsz;
354 /* now off to subtract IP_DF flag if needed */
355
356 TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
357 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) {
358 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
359 }
360 }
361 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
362 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) {
363 /*
364 * For this guy we also mark for immediate
365 * resend since we sent to big of chunk
366 */
367 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
368 if (chk->sent != SCTP_DATAGRAM_RESEND)
369 stcb->asoc.sent_queue_retran_cnt++;
370 chk->sent = SCTP_DATAGRAM_RESEND;
371 chk->rec.data.doing_fast_retransmit = 0;
372
373 chk->sent = SCTP_DATAGRAM_RESEND;
374 /* Clear any time so NO RTT is being done */
375 chk->sent_rcv_time.tv_sec = 0;
376 chk->sent_rcv_time.tv_usec = 0;
377 stcb->asoc.total_flight -= chk->send_size;
378 net->flight_size -= chk->send_size;
379 }
380 }
381 TAILQ_FOREACH(strm, &stcb->asoc.out_wheel, next_spoke) {
382 TAILQ_FOREACH(chk, &strm->outqueue, sctp_next) {
383 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) {
384 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
385 }
386 }
387 }
388 }
389 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL);
390 out:
391 if (inp) {
392 /* reduce inp's ref-count */
393 SCTP_INP_WLOCK(inp);
394 SCTP_INP_DECR_REF(inp);
395 SCTP_INP_WUNLOCK(inp);
396 }
397 if (stcb) {
398 SCTP_TCB_UNLOCK(stcb);
399 }
400 }
401
402
403 void *
sctp6_ctlinput(int cmd,const struct sockaddr * pktdst,void * d)404 sctp6_ctlinput(int cmd, const struct sockaddr *pktdst, void *d)
405 {
406 struct sctphdr sh;
407 struct ip6ctlparam *ip6cp = NULL;
408 int s, cm;
409
410 if (pktdst->sa_family != AF_INET6 ||
411 pktdst->sa_len != sizeof(struct sockaddr_in6))
412 return NULL;
413
414 if ((unsigned)cmd >= PRC_NCMDS)
415 return NULL;
416 if (PRC_IS_REDIRECT(cmd)) {
417 d = NULL;
418 } else if (inet6ctlerrmap[cmd] == 0) {
419 return NULL;
420 }
421
422 /* if the parameter is from icmp6, decode it. */
423 if (d != NULL) {
424 ip6cp = (struct ip6ctlparam *)d;
425 } else {
426 ip6cp = (struct ip6ctlparam *)NULL;
427 }
428
429 if (ip6cp) {
430 /*
431 * XXX: We assume that when IPV6 is non NULL,
432 * M and OFF are valid.
433 */
434 /* check if we can safely examine src and dst ports */
435 struct sctp_inpcb *inp;
436 struct sctp_tcb *stcb;
437 struct sctp_nets *net;
438 struct sockaddr_in6 final;
439
440 if (ip6cp->ip6c_m == NULL ||
441 (size_t)ip6cp->ip6c_m->m_pkthdr.len < (ip6cp->ip6c_off + sizeof(sh)))
442 return NULL;
443
444 memset(&sh, 0, sizeof(sh));
445 memset(&final, 0, sizeof(final));
446 inp = NULL;
447 net = NULL;
448 m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh),
449 (void *)&sh);
450 ip6cp->ip6c_src->sin6_port = sh.src_port;
451 final.sin6_len = sizeof(final);
452 final.sin6_family = AF_INET6;
453 final.sin6_addr = ((const struct sockaddr_in6 *)pktdst)->sin6_addr;
454 final.sin6_port = sh.dest_port;
455 s = splsoftnet();
456 stcb = sctp_findassociation_addr_sa(sin6tosa(ip6cp->ip6c_src),
457 sin6tosa(&final),
458 &inp, &net, 1);
459 /* inp's ref-count increased && stcb locked */
460 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
461 if (cmd == PRC_MSGSIZE) {
462 sctp6_notify_mbuf(inp,
463 ip6cp->ip6c_icmp6,
464 &sh,
465 stcb,
466 net);
467 /* inp's ref-count reduced && stcb unlocked */
468 } else {
469 if (cmd == PRC_HOSTDEAD) {
470 cm = EHOSTUNREACH;
471 } else {
472 cm = inet6ctlerrmap[cmd];
473 }
474 sctp_notify(inp, cm, &sh, sin6tosa(&final),
475 stcb, net);
476 /* inp's ref-count reduced && stcb unlocked */
477 }
478 } else {
479 if (PRC_IS_REDIRECT(cmd) && inp) {
480 in6pcb_rtchange((struct inpcb *)inp, inet6ctlerrmap[cmd]);
481 }
482 if (inp) {
483 /* reduce inp's ref-count */
484 SCTP_INP_WLOCK(inp);
485 SCTP_INP_DECR_REF(inp);
486 SCTP_INP_WUNLOCK(inp);
487 }
488 if (stcb) {
489 SCTP_TCB_UNLOCK(stcb);
490 }
491 }
492 splx(s);
493 }
494 return NULL;
495 }
496
497 /*
498 * this routine can probably be collapsed into the one in sctp_userreq.c
499 * since they do the same thing and now we lookup with a sockaddr
500 */
501 #ifdef __FreeBSD__
502 static int
sctp6_getcred(SYSCTL_HANDLER_ARGS)503 sctp6_getcred(SYSCTL_HANDLER_ARGS)
504 {
505 struct sockaddr_in6 addrs[2];
506 struct sctp_inpcb *inp;
507 struct sctp_nets *net;
508 struct sctp_tcb *stcb;
509 int error, s;
510
511 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
512 error = suser(req->td);
513 #else
514 error = suser(req->p);
515 #endif
516 if (error)
517 return (error);
518
519 if (req->newlen != sizeof(addrs))
520 return (EINVAL);
521 if (req->oldlen != sizeof(struct ucred))
522 return (EINVAL);
523 error = SYSCTL_IN(req, addrs, sizeof(addrs));
524 if (error)
525 return (error);
526 s = splsoftnet();
527
528 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[0]),
529 sin6tosa(&addrs[1]),
530 &inp, &net, 1);
531 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
532 error = ENOENT;
533 if (inp) {
534 SCTP_INP_WLOCK(inp);
535 SCTP_INP_DECR_REF(inp);
536 SCTP_INP_WUNLOCK(inp);
537 }
538 goto out;
539 }
540 error = SYSCTL_OUT(req, inp->sctp_socket->so_cred,
541 sizeof(struct ucred));
542
543 SCTP_TCB_UNLOCK (stcb);
544 out:
545 splx(s);
546 return (error);
547 }
548
549 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW,
550 0, 0,
551 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection");
552
553 #endif
554
555 /* This is the same as the sctp_abort() could be made common */
556 static int
sctp6_abort(struct socket * so)557 sctp6_abort(struct socket *so)
558 {
559 int s;
560 struct sctp_inpcb *inp;
561
562 KASSERT(solocked(so));
563
564 s = splsoftnet();
565 inp = (struct sctp_inpcb *)so->so_pcb;
566 if (inp == 0)
567 return EINVAL; /* ??? possible? panic instead? */
568 soisdisconnected(so);
569 sctp_inpcb_free(inp, 1);
570 splx(s);
571 return 0;
572 }
573
574 static int
sctp6_attach(struct socket * so,int proto)575 sctp6_attach(struct socket *so, int proto)
576 {
577 struct in6pcb *inp6;
578 int error;
579 struct sctp_inpcb *inp;
580
581 sosetlock(so);
582 inp = (struct sctp_inpcb *)so->so_pcb;
583 if (inp != NULL)
584 return EINVAL;
585
586 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
587 error = soreserve(so, sctp_sendspace, sctp_recvspace);
588 if (error)
589 return error;
590 }
591 error = sctp_inpcb_alloc(so);
592 if (error)
593 return error;
594 inp = (struct sctp_inpcb *)so->so_pcb;
595 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */
596 inp6 = (struct in6pcb *)inp;
597
598 inp->inp_vflag |= INP_IPV6;
599 if (ip6_v6only) {
600 inp6->in6p_flags |= IN6P_IPV6_V6ONLY;
601 }
602 so->so_send = sctp_sosend;
603
604 #ifdef IPSEC
605 inp6->in6p_af = proto;
606 #endif
607 inp6->in6p_hops = -1; /* use kernel default */
608 inp6->in6p_cksum = -1; /* just to be sure */
609 #ifdef INET
610 /*
611 * XXX: ugly!!
612 * IPv4 TTL initialization is necessary for an IPv6 socket as well,
613 * because the socket may be bound to an IPv6 wildcard address,
614 * which may match an IPv4-mapped IPv6 address.
615 */
616 inp->inp_ip_ttl = ip_defttl;
617 #endif
618 /*
619 * Hmm what about the IPSEC stuff that is missing here but
620 * in sctp_attach()?
621 */
622 return 0;
623 }
624
625 static int
sctp6_bind(struct socket * so,struct sockaddr * nam,struct lwp * l)626 sctp6_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
627 {
628 struct sctp_inpcb *inp;
629 struct in6pcb *inp6;
630 int error;
631
632 KASSERT(solocked(so));
633
634 inp = (struct sctp_inpcb *)so->so_pcb;
635 if (inp == 0)
636 return EINVAL;
637
638 inp6 = (struct in6pcb *)inp;
639 inp->inp_vflag &= ~INP_IPV4;
640 inp->inp_vflag |= INP_IPV6;
641
642 if (nam != NULL && (inp6->in6p_flags & IN6P_IPV6_V6ONLY) == 0) {
643 if (nam->sa_family == AF_INET) {
644 /* binding v4 addr to v6 socket, so reset flags */
645 inp->inp_vflag |= INP_IPV4;
646 inp->inp_vflag &= ~INP_IPV6;
647 } else {
648 struct sockaddr_in6 *sin6_p;
649 sin6_p = (struct sockaddr_in6 *)nam;
650
651 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) {
652 inp->inp_vflag |= INP_IPV4;
653 }
654 else if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
655 struct sockaddr_in sin;
656 in6_sin6_2_sin(&sin, sin6_p);
657 inp->inp_vflag |= INP_IPV4;
658 inp->inp_vflag &= ~INP_IPV6;
659 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, l);
660 return error;
661 }
662 }
663 } else if (nam != NULL) {
664 /* IPV6_V6ONLY socket */
665 if (nam->sa_family == AF_INET) {
666 /* can't bind v4 addr to v6 only socket! */
667 return EINVAL;
668 } else {
669 struct sockaddr_in6 *sin6_p;
670 sin6_p = (struct sockaddr_in6 *)nam;
671
672 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr))
673 /* can't bind v4-mapped addrs either! */
674 /* NOTE: we don't support SIIT */
675 return EINVAL;
676 }
677 }
678 error = sctp_inpcb_bind(so, nam, l);
679 return error;
680 }
681
682 /*This could be made common with sctp_detach() since they are identical */
683 static int
sctp6_detach(struct socket * so)684 sctp6_detach(struct socket *so)
685 {
686 struct sctp_inpcb *inp;
687
688 inp = (struct sctp_inpcb *)so->so_pcb;
689 if (inp == 0)
690 return EINVAL;
691
692 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
693 (so->so_rcv.sb_cc > 0))
694 sctp_inpcb_free(inp, 1);
695 else
696 sctp_inpcb_free(inp, 0);
697 return 0;
698 }
699
700 static int
sctp6_disconnect(struct socket * so)701 sctp6_disconnect(struct socket *so)
702 {
703 struct sctp_inpcb *inp;
704
705 inp = (struct sctp_inpcb *)so->so_pcb;
706 if (inp == NULL) {
707 return (ENOTCONN);
708 }
709 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
710 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
711 /* No connection */
712 return (ENOTCONN);
713 } else {
714 int some_on_streamwheel = 0;
715 struct sctp_association *asoc;
716 struct sctp_tcb *stcb;
717
718 stcb = LIST_FIRST(&inp->sctp_asoc_list);
719 if (stcb == NULL) {
720 return (EINVAL);
721 }
722 asoc = &stcb->asoc;
723 if (!TAILQ_EMPTY(&asoc->out_wheel)) {
724 /* Check to see if some data queued */
725 struct sctp_stream_out *outs;
726 TAILQ_FOREACH(outs, &asoc->out_wheel,
727 next_spoke) {
728 if (!TAILQ_EMPTY(&outs->outqueue)) {
729 some_on_streamwheel = 1;
730 break;
731 }
732 }
733 }
734
735 if (TAILQ_EMPTY(&asoc->send_queue) &&
736 TAILQ_EMPTY(&asoc->sent_queue) &&
737 (some_on_streamwheel == 0)) {
738 /* nothing queued to send, so I'm done... */
739 if ((SCTP_GET_STATE(asoc) !=
740 SCTP_STATE_SHUTDOWN_SENT) &&
741 (SCTP_GET_STATE(asoc) !=
742 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
743 /* only send SHUTDOWN the first time */
744 #ifdef SCTP_DEBUG
745 if (sctp_debug_on & SCTP_DEBUG_OUTPUT4) {
746 printf("%s:%d sends a shutdown\n",
747 __FILE__,
748 __LINE__
749 );
750 }
751 #endif
752 sctp_send_shutdown(stcb, stcb->asoc.primary_destination);
753 sctp_chunk_output(stcb->sctp_ep, stcb, 1);
754 asoc->state = SCTP_STATE_SHUTDOWN_SENT;
755 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
756 stcb->sctp_ep, stcb,
757 asoc->primary_destination);
758 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
759 stcb->sctp_ep, stcb,
760 asoc->primary_destination);
761 }
762 } else {
763 /*
764 * we still got (or just got) data to send,
765 * so set SHUTDOWN_PENDING
766 */
767 /*
768 * XXX sockets draft says that MSG_EOF should
769 * be sent with no data. currently, we will
770 * allow user data to be sent first and move
771 * to SHUTDOWN-PENDING
772 */
773 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
774 }
775 return (0);
776 }
777 } else {
778 /* UDP model does not support this */
779 return EOPNOTSUPP;
780 }
781 }
782
783 static int
sctp6_recvoob(struct socket * so,struct mbuf * m,int flags)784 sctp6_recvoob(struct socket *so, struct mbuf *m, int flags)
785 {
786 KASSERT(solocked(so));
787
788 return EOPNOTSUPP;
789 }
790
791 static int
sctp6_send(struct socket * so,struct mbuf * m,struct sockaddr * nam,struct mbuf * control,struct lwp * l)792 sctp6_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
793 struct mbuf *control, struct lwp *l)
794 {
795 struct sctp_inpcb *inp;
796 struct in6pcb *inp6;
797 #ifdef INET
798 struct sockaddr_in6 *sin6;
799 #endif /* INET */
800 /* No SPL needed since sctp_output does this */
801
802 inp = (struct sctp_inpcb *)so->so_pcb;
803 if (inp == NULL) {
804 m_freem(control);
805 control = NULL;
806 m_freem(m);
807 return EINVAL;
808 }
809 inp6 = (struct in6pcb *)inp;
810 /* For the TCP model we may get a NULL addr, if we
811 * are a connected socket thats ok.
812 */
813 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) &&
814 (nam == NULL)) {
815 goto connected_type;
816 }
817 if (nam == NULL) {
818 m_freem(m);
819 m_freem(control);
820 control = NULL;
821 return (EDESTADDRREQ);
822 }
823
824 #ifdef INET
825 sin6 = (struct sockaddr_in6 *)nam;
826 /*
827 * XXX XXX XXX Check sin6->sin6_len?
828 */
829 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) {
830 /*
831 * if IPV6_V6ONLY flag, we discard datagrams
832 * destined to a v4 addr or v4-mapped addr
833 */
834 if (nam->sa_family == AF_INET) {
835 return EINVAL;
836 }
837 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
838 return EINVAL;
839 }
840 }
841
842 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
843 if (!ip6_v6only) {
844 struct sockaddr_in sin;
845 /* convert v4-mapped into v4 addr and send */
846 in6_sin6_2_sin(&sin, sin6);
847 return sctp_send(so, m, (struct sockaddr *)&sin,
848 control, l);
849 } else {
850 /* mapped addresses aren't enabled */
851 return EINVAL;
852 }
853 }
854 #endif /* INET */
855 connected_type:
856 /* now what about control */
857 if (control) {
858 if (inp->control) {
859 printf("huh? control set?\n");
860 m_freem(inp->control);
861 inp->control = NULL;
862 }
863 inp->control = control;
864 }
865 /* add it in possibly */
866 if ((inp->pkt) &&
867 (inp->pkt->m_flags & M_PKTHDR)) {
868 struct mbuf *x;
869 int c_len;
870
871 c_len = 0;
872 /* How big is it */
873 for (x=m;x;x = x->m_next) {
874 c_len += x->m_len;
875 }
876 inp->pkt->m_pkthdr.len += c_len;
877 }
878 /* Place the data */
879 if (inp->pkt) {
880 inp->pkt_last->m_next = m;
881 inp->pkt_last = m;
882 } else {
883 inp->pkt_last = inp->pkt = m;
884 }
885 if ((so->so_state & SS_MORETOCOME) == 0) {
886 /*
887 * note with the current version this code will only be
888 * used by OpenBSD, NetBSD and FreeBSD have methods for
889 * re-defining sosend() to use sctp_sosend(). One can
890 * optionally switch back to this code (by changing back
891 * the definitions but this is not advisable.
892 */
893 int ret;
894 ret = sctp_output(inp, inp->pkt , nam, inp->control, l, 0);
895 inp->pkt = NULL;
896 inp->control = NULL;
897 return (ret);
898 } else {
899 return (0);
900 }
901 }
902
903 static int
sctp6_sendoob(struct socket * so,struct mbuf * m,struct mbuf * control)904 sctp6_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
905 {
906 KASSERT(solocked(so));
907
908 m_freem(m);
909 m_freem(control);
910
911 return EOPNOTSUPP;
912 }
913
914 static int
sctp6_connect(struct socket * so,struct sockaddr * nam,struct lwp * l)915 sctp6_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
916 {
917 int error = 0;
918 struct sctp_inpcb *inp;
919 struct in6pcb *inp6;
920 struct sctp_tcb *stcb;
921 #ifdef INET
922 struct sockaddr_in6 *sin6;
923 struct sockaddr_storage ss;
924 #endif /* INET */
925
926 inp6 = (struct in6pcb *)so->so_pcb;
927 inp = (struct sctp_inpcb *)so->so_pcb;
928 if (inp == 0) {
929 return (ECONNRESET); /* I made the same as TCP since
930 * we are not setup? */
931 }
932 SCTP_ASOC_CREATE_LOCK(inp);
933 SCTP_INP_RLOCK(inp);
934 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
935 SCTP_PCB_FLAGS_UNBOUND) {
936 /* Bind a ephemeral port */
937 SCTP_INP_RUNLOCK(inp);
938 error = sctp6_bind(so, NULL, l);
939 if (error) {
940 SCTP_ASOC_CREATE_UNLOCK(inp);
941
942 return (error);
943 }
944 SCTP_INP_RLOCK(inp);
945 }
946
947 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
948 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
949 /* We are already connected AND the TCP model */
950 SCTP_INP_RUNLOCK(inp);
951 SCTP_ASOC_CREATE_UNLOCK(inp);
952 return (EADDRINUSE);
953 }
954
955 #ifdef INET
956 sin6 = (struct sockaddr_in6 *)nam;
957
958 /*
959 * XXX XXX XXX Check sin6->sin6_len?
960 */
961
962 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) {
963 /*
964 * if IPV6_V6ONLY flag, ignore connections
965 * destined to a v4 addr or v4-mapped addr
966 */
967 if (nam->sa_family == AF_INET) {
968 SCTP_INP_RUNLOCK(inp);
969 SCTP_ASOC_CREATE_UNLOCK(inp);
970 return EINVAL;
971 }
972 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
973 SCTP_INP_RUNLOCK(inp);
974 SCTP_ASOC_CREATE_UNLOCK(inp);
975 return EINVAL;
976 }
977 }
978
979 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
980 if (!ip6_v6only) {
981 /* convert v4-mapped into v4 addr */
982 in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6);
983 nam = (struct sockaddr *)&ss;
984 } else {
985 /* mapped addresses aren't enabled */
986 SCTP_INP_RUNLOCK(inp);
987 SCTP_ASOC_CREATE_UNLOCK(inp);
988 return EINVAL;
989 }
990 }
991 #endif /* INET */
992
993 /* Now do we connect? */
994 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
995 stcb = LIST_FIRST(&inp->sctp_asoc_list);
996 if (stcb) {
997 SCTP_TCB_UNLOCK (stcb);
998 }
999 SCTP_INP_RUNLOCK(inp);
1000 } else {
1001 SCTP_INP_RUNLOCK(inp);
1002 SCTP_INP_WLOCK(inp);
1003 SCTP_INP_INCR_REF(inp);
1004 SCTP_INP_WUNLOCK(inp);
1005 stcb = sctp_findassociation_ep_addr(&inp, nam, NULL, NULL, NULL);
1006 if (stcb == NULL) {
1007 SCTP_INP_WLOCK(inp);
1008 SCTP_INP_DECR_REF(inp);
1009 SCTP_INP_WUNLOCK(inp);
1010 }
1011 }
1012
1013 if (stcb != NULL) {
1014 /* Already have or am bring up an association */
1015 SCTP_ASOC_CREATE_UNLOCK(inp);
1016 SCTP_TCB_UNLOCK (stcb);
1017 return (EALREADY);
1018 }
1019 /* We are GOOD to go */
1020 stcb = sctp_aloc_assoc(inp, nam, 1, &error, 0);
1021 SCTP_ASOC_CREATE_UNLOCK(inp);
1022 if (stcb == NULL) {
1023 /* Gak! no memory */
1024 return (error);
1025 }
1026 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1027 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1028 /* Set the connected flag so we can queue data */
1029 soisconnecting(so);
1030 }
1031 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
1032 SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1033 sctp_send_initiate(inp, stcb);
1034 SCTP_TCB_UNLOCK (stcb);
1035 return error;
1036 }
1037
1038 static int
sctp6_connect2(struct socket * so,struct socket * so2)1039 sctp6_connect2(struct socket *so, struct socket *so2)
1040 {
1041 KASSERT(solocked(so));
1042
1043 return EOPNOTSUPP;
1044 }
1045
1046 static int
sctp6_getaddr(struct socket * so,struct sockaddr * nam)1047 sctp6_getaddr(struct socket *so, struct sockaddr *nam)
1048 {
1049 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
1050 struct sctp_inpcb *inp;
1051 int error;
1052
1053 /*
1054 * Do the malloc first in case it blocks.
1055 */
1056 memset(sin6, 0, sizeof(*sin6));
1057 sin6->sin6_family = AF_INET6;
1058 sin6->sin6_len = sizeof(*sin6);
1059
1060 inp = (struct sctp_inpcb *)so->so_pcb;
1061 if (inp == NULL) {
1062 return ECONNRESET;
1063 }
1064
1065 sin6->sin6_port = inp->sctp_lport;
1066 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1067 /* For the bound all case you get back 0 */
1068 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1069 struct sctp_tcb *stcb;
1070 const struct sockaddr_in6 *sin_a6;
1071 struct sctp_nets *net;
1072 int fnd;
1073
1074 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1075 if (stcb == NULL) {
1076 goto notConn6;
1077 }
1078 fnd = 0;
1079 sin_a6 = NULL;
1080 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1081 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro);
1082 if (sin_a6->sin6_family == AF_INET6) {
1083 fnd = 1;
1084 break;
1085 }
1086 }
1087 if ((!fnd) || (sin_a6 == NULL)) {
1088 /* punt */
1089 goto notConn6;
1090 }
1091 sin6->sin6_addr = sctp_ipv6_source_address_selection(
1092 inp, stcb, &net->ro, net, 0);
1093
1094 } else {
1095 /* For the bound all case you get back 0 */
1096 notConn6:
1097 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr));
1098 }
1099 } else {
1100 /* Take the first IPv6 address in the list */
1101 struct sctp_laddr *laddr;
1102 int fnd = 0;
1103 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1104 if (laddr->ifa->ifa_addr->sa_family == AF_INET6) {
1105 struct sockaddr_in6 *sin_a;
1106 sin_a = (struct sockaddr_in6 *)laddr->ifa->ifa_addr;
1107 sin6->sin6_addr = sin_a->sin6_addr;
1108 fnd = 1;
1109 break;
1110 }
1111 }
1112 if (!fnd) {
1113 return ENOENT;
1114 }
1115 }
1116 /* Scoping things for v6 */
1117 if ((error = sa6_recoverscope(sin6)) != 0)
1118 return (error);
1119
1120 return (0);
1121 }
1122
1123 static int
sctp6_peeraddr(struct socket * so,struct sockaddr * nam)1124 sctp6_peeraddr(struct socket *so, struct sockaddr *nam)
1125 {
1126 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
1127 int fnd, error;
1128 const struct sockaddr_in6 *sin_a6;
1129 struct sctp_inpcb *inp;
1130 struct sctp_tcb *stcb;
1131 struct sctp_nets *net;
1132 /*
1133 * Do the malloc first in case it blocks.
1134 */
1135 inp = (struct sctp_inpcb *)so->so_pcb;
1136 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
1137 /* UDP type and listeners will drop out here */
1138 return (ENOTCONN);
1139 }
1140 memset(sin6, 0, sizeof(*sin6));
1141 sin6->sin6_family = AF_INET6;
1142 sin6->sin6_len = sizeof(*sin6);
1143
1144 /* We must recapture incase we blocked */
1145 inp = (struct sctp_inpcb *)so->so_pcb;
1146 if (inp == NULL) {
1147 return ECONNRESET;
1148 }
1149 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1150 if (stcb == NULL) {
1151 return ECONNRESET;
1152 }
1153 fnd = 0;
1154 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1155 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro);
1156 if (sin_a6->sin6_family == AF_INET6) {
1157 fnd = 1;
1158 sin6->sin6_port = stcb->rport;
1159 sin6->sin6_addr = sin_a6->sin6_addr;
1160 break;
1161 }
1162 }
1163 if (!fnd) {
1164 /* No IPv4 address */
1165 return ENOENT;
1166 }
1167 if ((error = sa6_recoverscope(sin6)) != 0)
1168 return (error);
1169
1170 return (0);
1171 }
1172
1173 static int
sctp6_sockaddr(struct socket * so,struct sockaddr * nam)1174 sctp6_sockaddr(struct socket *so, struct sockaddr *nam)
1175 {
1176 struct in6pcb *inp6 = sotoin6pcb(so);
1177 int error;
1178
1179 if (inp6 == NULL)
1180 return EINVAL;
1181
1182 /* allow v6 addresses precedence */
1183 error = sctp6_getaddr(so, nam);
1184 if (error) {
1185 /* try v4 next if v6 failed */
1186 error = sctp_sockaddr(so, nam);
1187 if (error) {
1188 return (error);
1189 }
1190
1191 /* if I'm V6ONLY, convert it to v4-mapped */
1192 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) {
1193 struct sockaddr_in6 sin6;
1194 in6_sin_2_v4mapsin6((struct sockaddr_in *)nam, &sin6);
1195 memcpy(nam, &sin6, sizeof(struct sockaddr_in6));
1196 }
1197 }
1198 return (error);
1199 }
1200
1201 #if 0
1202 static int
1203 sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam)
1204 {
1205 struct in6pcb *inp6 = sotoin6pcb(so);
1206 int error;
1207
1208 if (inp6 == NULL)
1209 return EINVAL;
1210
1211 /* allow v6 addresses precedence */
1212 error = sctp6_peeraddr(so, nam);
1213 if (error) {
1214 /* try v4 next if v6 failed */
1215 error = sctp_peeraddr(so, nam);
1216 if (error) {
1217 return (error);
1218 }
1219 /* if I'm V6ONLY, convert it to v4-mapped */
1220 if ((inp6->in6p_flags & IN6P_IPV6_V6ONLY)) {
1221 struct sockaddr_in6 sin6;
1222 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
1223 memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
1224 }
1225 }
1226 return error;
1227 }
1228 #endif
1229
1230 static int
sctp6_ioctl(struct socket * so,u_long cmd,void * nam,struct ifnet * ifp)1231 sctp6_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1232 {
1233 int error = 0;
1234 int family;
1235
1236 if (cmd == SIOCCONNECTX) {
1237 solock(so);
1238 error = sctp_do_connect_x(so, nam, curlwp, 0);
1239 sounlock(so);
1240 } else if (cmd == SIOCCONNECTXDEL) {
1241 solock(so);
1242 error = sctp_do_connect_x(so, nam, curlwp, 1);
1243 sounlock(so);
1244 } else {
1245 family = so->so_proto->pr_domain->dom_family;
1246 switch (family) {
1247 #ifdef INET
1248 case PF_INET:
1249 error = in_control(so, cmd, nam, ifp);
1250 break;
1251 #endif
1252 #ifdef INET6
1253 case PF_INET6:
1254 error = in6_control(so, cmd, nam, ifp);
1255 break;
1256 #endif
1257 default:
1258 error = EAFNOSUPPORT;
1259 }
1260 }
1261 return (error);
1262 }
1263
1264 static int
sctp6_accept(struct socket * so,struct sockaddr * nam)1265 sctp6_accept(struct socket *so, struct sockaddr *nam)
1266 {
1267 return sctp_accept(so, nam);
1268 }
1269
1270 static int
sctp6_stat(struct socket * so,struct stat * ub)1271 sctp6_stat(struct socket *so, struct stat *ub)
1272 {
1273 return 0;
1274 }
1275
1276 static int
sctp6_listen(struct socket * so,struct lwp * l)1277 sctp6_listen(struct socket *so, struct lwp *l)
1278 {
1279 return sctp_listen(so, l);
1280 }
1281
1282 static int
sctp6_shutdown(struct socket * so)1283 sctp6_shutdown(struct socket *so)
1284 {
1285 return sctp_shutdown(so);
1286 }
1287
1288 static int
sctp6_rcvd(struct socket * so,int flags,struct lwp * l)1289 sctp6_rcvd(struct socket *so, int flags, struct lwp *l)
1290 {
1291 KASSERT(solocked(so));
1292
1293 return sctp_rcvd(so, flags, l);
1294 }
1295
1296 static int
sctp6_purgeif(struct socket * so,struct ifnet * ifp)1297 sctp6_purgeif(struct socket *so, struct ifnet *ifp)
1298 {
1299 struct ifaddr *ifa;
1300 /* FIXME NOMPSAFE */
1301 IFADDR_READER_FOREACH(ifa, ifp) {
1302 if (ifa->ifa_addr->sa_family == PF_INET6) {
1303 sctp_delete_ip_address(ifa);
1304 }
1305 }
1306
1307 #ifndef NET_MPSAFE
1308 mutex_enter(softnet_lock);
1309 #endif
1310 in6_purgeif(ifp);
1311 #ifndef NET_MPSAFE
1312 mutex_exit(softnet_lock);
1313 #endif
1314
1315 return 0;
1316 }
1317
1318 PR_WRAP_USRREQS(sctp6)
1319 #define sctp6_attach sctp6_attach_wrapper
1320 #define sctp6_detach sctp6_detach_wrapper
1321 #define sctp6_accept sctp6_accept_wrapper
1322 #define sctp6_bind sctp6_bind_wrapper
1323 #define sctp6_listen sctp6_listen_wrapper
1324 #define sctp6_connect sctp6_connect_wrapper
1325 #define sctp6_connect2 sctp6_connect2_wrapper
1326 #define sctp6_disconnect sctp6_disconnect_wrapper
1327 #define sctp6_shutdown sctp6_shutdown_wrapper
1328 #define sctp6_abort sctp6_abort_wrapper
1329 #define sctp6_ioctl sctp6_ioctl_wrapper
1330 #define sctp6_stat sctp6_stat_wrapper
1331 #define sctp6_peeraddr sctp6_peeraddr_wrapper
1332 #define sctp6_sockaddr sctp6_sockaddr_wrapper
1333 #define sctp6_rcvd sctp6_rcvd_wrapper
1334 #define sctp6_recvoob sctp6_recvoob_wrapper
1335 #define sctp6_send sctp6_send_wrapper
1336 #define sctp6_sendoob sctp6_sendoob_wrapper
1337 #define sctp6_purgeif sctp6_purgeif_wrapper
1338
1339 const struct pr_usrreqs sctp6_usrreqs = {
1340 .pr_attach = sctp6_attach,
1341 .pr_detach = sctp6_detach,
1342 .pr_accept = sctp6_accept,
1343 .pr_bind = sctp6_bind,
1344 .pr_listen = sctp6_listen,
1345 .pr_connect = sctp6_connect,
1346 .pr_connect2 = sctp6_connect2,
1347 .pr_disconnect = sctp6_disconnect,
1348 .pr_shutdown = sctp6_shutdown,
1349 .pr_abort = sctp6_abort,
1350 .pr_ioctl = sctp6_ioctl,
1351 .pr_stat = sctp6_stat,
1352 .pr_peeraddr = sctp6_peeraddr,
1353 .pr_sockaddr = sctp6_sockaddr,
1354 .pr_rcvd = sctp6_rcvd,
1355 .pr_recvoob = sctp6_recvoob,
1356 .pr_send = sctp6_send,
1357 .pr_sendoob = sctp6_sendoob,
1358 .pr_purgeif = sctp6_purgeif,
1359 };
1360