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comparison: netwerk/sctp/src/netinet6/sctp6_usrreq.c

netwerk/sctp/src/netinet6/sctp6_usrreq.c

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1 /*-
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.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
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.
15 *
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.
19 *
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.
31 */
32
33 #ifdef __FreeBSD__
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD: head/sys/netinet6/sctp6_usrreq.c 257555 2013-11-02 20:12:19Z tuexen $");
36 #endif
37
38 #include <netinet/sctp_os.h>
39 #ifdef INET6
40 #ifdef __FreeBSD__
41 #include <sys/proc.h>
42 #endif
43 #include <netinet/sctp_pcb.h>
44 #include <netinet/sctp_header.h>
45 #include <netinet/sctp_var.h>
46 #ifdef INET6
47 #include <netinet6/sctp6_var.h>
48 #endif
49 #include <netinet/sctp_sysctl.h>
50 #include <netinet/sctp_output.h>
51 #include <netinet/sctp_uio.h>
52 #include <netinet/sctp_asconf.h>
53 #include <netinet/sctputil.h>
54 #include <netinet/sctp_indata.h>
55 #include <netinet/sctp_timer.h>
56 #include <netinet/sctp_auth.h>
57 #include <netinet/sctp_input.h>
58 #include <netinet/sctp_output.h>
59 #include <netinet/sctp_bsd_addr.h>
60 #include <netinet/sctp_crc32.h>
61 #if !defined(__Userspace_os_Windows)
62 #include <netinet/udp.h>
63 #endif
64
65 #if defined(__APPLE__)
66 #define APPLE_FILE_NO 9
67 #endif
68 #ifdef IPSEC
69 #include <netipsec/ipsec.h>
70 #ifdef INET6
71 #include <netipsec/ipsec6.h>
72 #endif /* INET6 */
73 #endif /* IPSEC */
74
75 #if !defined(__Userspace__)
76 extern struct protosw inetsw[];
77 #endif
78 #if defined(__Panda__) || defined(__Userspace__)
79 int ip6_v6only=0;
80 #endif
81 #if defined(__Userspace__)
82 void
83 in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
84 {
85 #if defined(__Userspace_os_Windows)
86 uint32_t temp;
87 #endif
88 bzero(sin, sizeof(*sin));
89 #ifdef HAVE_SIN_LEN
90 sin->sin_len = sizeof(struct sockaddr_in);
91 #endif
92 sin->sin_family = AF_INET;
93 sin->sin_port = sin6->sin6_port;
94 #if defined(__Userspace_os_Windows)
95 temp = sin6->sin6_addr.s6_addr16[7];
96 temp = temp << 16;
97 temp = temp | sin6->sin6_addr.s6_addr16[6];
98 sin->sin_addr.s_addr = temp;
99 sctp_print_address((struct sockaddr*)sin);
100 #else
101 sin->sin_addr.s_addr = sin6->sin6_addr.s6_addr32[3];
102 #endif
103 }
104
105 void
106 in6_sin6_2_sin_in_sock(struct sockaddr *nam)
107 {
108 struct sockaddr_in *sin_p;
109 struct sockaddr_in6 sin6;
110
111 /* save original sockaddr_in6 addr and convert it to sockaddr_in */
112 sin6 = *(struct sockaddr_in6 *)nam;
113 sin_p = (struct sockaddr_in *)nam;
114 in6_sin6_2_sin(sin_p, &sin6);
115 }
116 #endif
117
118 #if !defined(__Userspace__)
119 int
120 #if defined(__APPLE__) || defined(__FreeBSD__)
121 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port)
122 #elif defined( __Panda__)
123 sctp6_input(pakhandle_type *i_pak)
124 #else
125 sctp6_input(struct mbuf **i_pak, int *offp, int proto)
126 #endif
127 {
128 struct mbuf *m;
129 int iphlen;
130 uint32_t vrf_id;
131 uint8_t ecn_bits;
132 struct sockaddr_in6 src, dst;
133 struct ip6_hdr *ip6;
134 struct sctphdr *sh;
135 struct sctp_chunkhdr *ch;
136 int length, offset;
137 #if !defined(SCTP_WITH_NO_CSUM)
138 uint8_t compute_crc;
139 #endif
140 #if defined(__FreeBSD__)
141 uint32_t mflowid;
142 uint8_t use_mflowid;
143 #endif
144 #if !(defined(__APPLE__) || defined (__FreeBSD__))
145 uint16_t port = 0;
146 #endif
147
148 #if defined(__Panda__)
149 /* This is Evil, but its the only way to make panda work right. */
150 iphlen = sizeof(struct ip6_hdr);
151 #else
152 iphlen = *offp;
153 #endif
154 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) {
155 SCTP_RELEASE_PKT(*i_pak);
156 return (IPPROTO_DONE);
157 }
158 m = SCTP_HEADER_TO_CHAIN(*i_pak);
159 #ifdef __Panda__
160 SCTP_DETACH_HEADER_FROM_CHAIN(*i_pak);
161 (void)SCTP_RELEASE_HEADER(*i_pak);
162 #endif
163 #ifdef SCTP_MBUF_LOGGING
164 /* Log in any input mbufs */
165 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
166 struct mbuf *mat;
167
168 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
169 if (SCTP_BUF_IS_EXTENDED(mat)) {
170 sctp_log_mb(mat, SCTP_MBUF_INPUT);
171 }
172 }
173 }
174 #endif
175 #ifdef SCTP_PACKET_LOGGING
176 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) {
177 sctp_packet_log(m);
178 }
179 #endif
180 #if defined(__FreeBSD__)
181 #if __FreeBSD_version > 1000049
182 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
183 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n",
184 m->m_pkthdr.len,
185 if_name(m->m_pkthdr.rcvif),
186 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
187 #elif __FreeBSD_version >= 800000
188 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
189 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n",
190 m->m_pkthdr.len,
191 if_name(m->m_pkthdr.rcvif),
192 m->m_pkthdr.csum_flags);
193 #else
194 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
195 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n",
196 m->m_pkthdr.len,
197 m->m_pkthdr.rcvif->if_xname,
198 m->m_pkthdr.csum_flags);
199 #endif
200 #endif
201 #if defined(__APPLE__)
202 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
203 "sctp6_input(): Packet of length %d received on %s%d with csum_flags 0x%x.\n",
204 m->m_pkthdr.len,
205 m->m_pkthdr.rcvif->if_name,
206 m->m_pkthdr.rcvif->if_unit,
207 m->m_pkthdr.csum_flags);
208 #endif
209 #if defined(__Windows__)
210 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
211 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n",
212 m->m_pkthdr.len,
213 m->m_pkthdr.rcvif->if_xname,
214 m->m_pkthdr.csum_flags);
215 #endif
216 #if defined(__FreeBSD__)
217 if (m->m_flags & M_FLOWID) {
218 mflowid = m->m_pkthdr.flowid;
219 use_mflowid = 1;
220 } else {
221 mflowid = 0;
222 use_mflowid = 0;
223 }
224 #endif
225 SCTP_STAT_INCR(sctps_recvpackets);
226 SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
227 /* Get IP, SCTP, and first chunk header together in the first mbuf. */
228 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr);
229 ip6 = mtod(m, struct ip6_hdr *);
230 IP6_EXTHDR_GET(sh, struct sctphdr *, m, iphlen,
231 (int)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr)));
232 if (sh == NULL) {
233 SCTP_STAT_INCR(sctps_hdrops);
234 return (IPPROTO_DONE);
235 }
236 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
237 offset -= sizeof(struct sctp_chunkhdr);
238 memset(&src, 0, sizeof(struct sockaddr_in6));
239 src.sin6_family = AF_INET6;
240 #ifdef HAVE_SIN6_LEN
241 src.sin6_len = sizeof(struct sockaddr_in6);
242 #endif
243 src.sin6_port = sh->src_port;
244 src.sin6_addr = ip6->ip6_src;
245 #if defined(__FreeBSD__)
246 #if defined(__APPLE__)
247 /* XXX: This code should also be used on Apple */
248 #endif
249 if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
250 goto out;
251 }
252 #endif
253 memset(&dst, 0, sizeof(struct sockaddr_in6));
254 dst.sin6_family = AF_INET6;
255 #ifdef HAVE_SIN6_LEN
256 dst.sin6_len = sizeof(struct sockaddr_in6);
257 #endif
258 dst.sin6_port = sh->dest_port;
259 dst.sin6_addr = ip6->ip6_dst;
260 #if defined(__FreeBSD__)
261 #if defined(__APPLE__)
262 /* XXX: This code should also be used on Apple */
263 #endif
264 if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
265 goto out;
266 }
267 #endif
268 #ifdef __FreeBSD__
269 if (faithprefix_p != NULL && (*faithprefix_p) (&dst.sin6_addr)) {
270 /* XXX send icmp6 host/port unreach? */
271 goto out;
272 }
273 #endif
274 #if defined(__APPLE__)
275 #if defined(NFAITH) && 0 < NFAITH
276 if (faithprefix(&dst.sin6_addr)) {
277 goto out;
278 }
279 #endif
280 #endif
281 length = ntohs(ip6->ip6_plen) + iphlen;
282 /* Validate mbuf chain length with IP payload length. */
283 if (SCTP_HEADER_LEN(m) != length) {
284 SCTPDBG(SCTP_DEBUG_INPUT1,
285 "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m));
286 SCTP_STAT_INCR(sctps_hdrops);
287 goto out;
288 }
289 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
290 goto out;
291 }
292 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff);
293 #if defined(SCTP_WITH_NO_CSUM)
294 SCTP_STAT_INCR(sctps_recvnocrc);
295 #else
296 #if defined(__FreeBSD__) && __FreeBSD_version >= 800000
297 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) {
298 SCTP_STAT_INCR(sctps_recvhwcrc);
299 compute_crc = 0;
300 } else {
301 #else
302 if (SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback) &&
303 (IN6_ARE_ADDR_EQUAL(&src.sin6_addr, &dst.sin6_addr))) {
304 SCTP_STAT_INCR(sctps_recvnocrc);
305 compute_crc = 0;
306 } else {
307 #endif
308 SCTP_STAT_INCR(sctps_recvswcrc);
309 compute_crc = 1;
310 }
311 #endif
312 sctp_common_input_processing(&m, iphlen, offset, length,
313 (struct sockaddr *)&src,
314 (struct sockaddr *)&dst,
315 sh, ch,
316 #if !defined(SCTP_WITH_NO_CSUM)
317 compute_crc,
318 #endif
319 ecn_bits,
320 #if defined(__FreeBSD__)
321 use_mflowid, mflowid,
322 #endif
323 vrf_id, port);
324 out:
325 if (m) {
326 sctp_m_freem(m);
327 }
328 return (IPPROTO_DONE);
329 }
330
331 #if defined(__APPLE__)
332 int
333 sctp6_input(struct mbuf **i_pak, int *offp)
334 {
335 return (sctp6_input_with_port(i_pak, offp, 0));
336 }
337 #endif
338
339 #if defined(__FreeBSD__)
340 int
341 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED)
342 {
343 return (sctp6_input_with_port(i_pak, offp, 0));
344 }
345 #endif
346
347 #if defined(__Panda__)
348 void
349 #else
350 static void
351 #endif
352 sctp6_notify_mbuf(struct sctp_inpcb *inp, struct icmp6_hdr *icmp6,
353 struct sctphdr *sh, struct sctp_tcb *stcb, struct sctp_nets *net)
354 {
355 uint32_t nxtsz;
356
357 if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
358 (icmp6 == NULL) || (sh == NULL)) {
359 goto out;
360 }
361 /* First do we even look at it? */
362 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag))
363 goto out;
364
365 if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) {
366 /* not PACKET TO BIG */
367 goto out;
368 }
369 /*
370 * ok we need to look closely. We could even get smarter and look at
371 * anyone that we sent to in case we get a different ICMP that tells
372 * us there is no way to reach a host, but for this impl, all we
373 * care about is MTU discovery.
374 */
375 nxtsz = ntohl(icmp6->icmp6_mtu);
376 /* Stop any PMTU timer */
377 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL, SCTP_FROM_SCTP6_USRREQ+SCTP_LOC_1);
378
379 /* Adjust destination size limit */
380 if (net->mtu > nxtsz) {
381 net->mtu = nxtsz;
382 if (net->port) {
383 net->mtu -= sizeof(struct udphdr);
384 }
385 }
386 /* now what about the ep? */
387 if (stcb->asoc.smallest_mtu > nxtsz) {
388 struct sctp_tmit_chunk *chk;
389
390 /* Adjust that too */
391 stcb->asoc.smallest_mtu = nxtsz;
392 /* now off to subtract IP_DF flag if needed */
393
394 TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
395 if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) {
396 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
397 }
398 }
399 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
400 if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) {
401 /*
402 * For this guy we also mark for immediate
403 * resend since we sent to big of chunk
404 */
405 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
406 if (chk->sent != SCTP_DATAGRAM_RESEND)
407 stcb->asoc.sent_queue_retran_cnt++;
408 chk->sent = SCTP_DATAGRAM_RESEND;
409 chk->rec.data.doing_fast_retransmit = 0;
410
411 chk->sent = SCTP_DATAGRAM_RESEND;
412 /* Clear any time so NO RTT is being done */
413 chk->sent_rcv_time.tv_sec = 0;
414 chk->sent_rcv_time.tv_usec = 0;
415 stcb->asoc.total_flight -= chk->send_size;
416 net->flight_size -= chk->send_size;
417 }
418 }
419 }
420 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL);
421 out:
422 if (stcb) {
423 SCTP_TCB_UNLOCK(stcb);
424 }
425 }
426 #endif
427
428
429 void
430 sctp6_notify(struct sctp_inpcb *inp,
431 struct icmp6_hdr *icmph,
432 struct sctphdr *sh,
433 struct sockaddr *to,
434 struct sctp_tcb *stcb,
435 struct sctp_nets *net)
436 {
437 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
438 struct socket *so;
439
440 #endif
441
442 /* protection */
443 if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
444 (sh == NULL) || (to == NULL)) {
445 if (stcb)
446 SCTP_TCB_UNLOCK(stcb);
447 return;
448 }
449 /* First job is to verify the vtag matches what I would send */
450 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
451 SCTP_TCB_UNLOCK(stcb);
452 return;
453 }
454 if (icmph->icmp6_type != ICMP_UNREACH) {
455 /* We only care about unreachable */
456 SCTP_TCB_UNLOCK(stcb);
457 return;
458 }
459 if ((icmph->icmp6_code == ICMP_UNREACH_NET) ||
460 (icmph->icmp6_code == ICMP_UNREACH_HOST) ||
461 (icmph->icmp6_code == ICMP_UNREACH_NET_UNKNOWN) ||
462 (icmph->icmp6_code == ICMP_UNREACH_HOST_UNKNOWN) ||
463 (icmph->icmp6_code == ICMP_UNREACH_ISOLATED) ||
464 (icmph->icmp6_code == ICMP_UNREACH_NET_PROHIB) ||
465 (icmph->icmp6_code == ICMP_UNREACH_HOST_PROHIB) ||
466 #if defined(__Panda__)
467 (icmph->icmp6_code == ICMP_UNREACH_ADMIN)) {
468 #elif defined(__Userspace_os_NetBSD)
469 (icmph->icmp6_code == ICMP_UNREACH_ADMIN_PROHIBIT)) {
470 #else
471 (icmph->icmp6_code == ICMP_UNREACH_FILTER_PROHIB)) {
472 #endif
473
474 /*
475 * Hmm reachablity problems we must examine closely. If its
476 * not reachable, we may have lost a network. Or if there is
477 * NO protocol at the other end named SCTP. well we consider
478 * it a OOTB abort.
479 */
480 if (net->dest_state & SCTP_ADDR_REACHABLE) {
481 /* Ok that destination is NOT reachable */
482 net->dest_state &= ~SCTP_ADDR_REACHABLE;
483 net->dest_state &= ~SCTP_ADDR_PF;
484 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
485 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED);
486 }
487 SCTP_TCB_UNLOCK(stcb);
488 } else if ((icmph->icmp6_code == ICMP_UNREACH_PROTOCOL) ||
489 (icmph->icmp6_code == ICMP_UNREACH_PORT)) {
490 /*
491 * Here the peer is either playing tricks on us,
492 * including an address that belongs to someone who
493 * does not support SCTP OR was a userland
494 * implementation that shutdown and now is dead. In
495 * either case treat it like a OOTB abort with no
496 * TCB
497 */
498 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED);
499 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
500 so = SCTP_INP_SO(inp);
501 atomic_add_int(&stcb->asoc.refcnt, 1);
502 SCTP_TCB_UNLOCK(stcb);
503 SCTP_SOCKET_LOCK(so, 1);
504 SCTP_TCB_LOCK(stcb);
505 atomic_subtract_int(&stcb->asoc.refcnt, 1);
506 #endif
507 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ+SCTP_LOC_2);
508 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
509 SCTP_SOCKET_UNLOCK(so, 1);
510 /* SCTP_TCB_UNLOCK(stcb); MT: I think this is not needed.*/
511 #endif
512 /* no need to unlock here, since the TCB is gone */
513 } else {
514 SCTP_TCB_UNLOCK(stcb);
515 }
516 }
517
518
519
520 #if !defined(__Panda__) && !defined(__Userspace__)
521 void
522 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d)
523 {
524 struct sctphdr sh;
525 struct ip6ctlparam *ip6cp = NULL;
526 uint32_t vrf_id;
527
528 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
529 vrf_id = SCTP_DEFAULT_VRFID;
530 #endif
531
532 #ifdef HAVE_SA_LEN
533 if (pktdst->sa_family != AF_INET6 ||
534 pktdst->sa_len != sizeof(struct sockaddr_in6))
535 #else
536 if (pktdst->sa_family != AF_INET6)
537 #endif
538 return;
539
540 if ((unsigned)cmd >= PRC_NCMDS)
541 return;
542 if (PRC_IS_REDIRECT(cmd)) {
543 d = NULL;
544 } else if (inet6ctlerrmap[cmd] == 0) {
545 return;
546 }
547 /* if the parameter is from icmp6, decode it. */
548 if (d != NULL) {
549 ip6cp = (struct ip6ctlparam *)d;
550 } else {
551 ip6cp = (struct ip6ctlparam *)NULL;
552 }
553
554 if (ip6cp) {
555 /*
556 * XXX: We assume that when IPV6 is non NULL, M and OFF are
557 * valid.
558 */
559 /* check if we can safely examine src and dst ports */
560 struct sctp_inpcb *inp = NULL;
561 struct sctp_tcb *stcb = NULL;
562 struct sctp_nets *net = NULL;
563 struct sockaddr_in6 final;
564
565 if (ip6cp->ip6c_m == NULL)
566 return;
567
568 bzero(&sh, sizeof(sh));
569 bzero(&final, sizeof(final));
570 inp = NULL;
571 net = NULL;
572 m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh),
573 (caddr_t)&sh);
574 ip6cp->ip6c_src->sin6_port = sh.src_port;
575 #ifdef HAVE_SIN6_LEN
576 final.sin6_len = sizeof(final);
577 #endif
578 final.sin6_family = AF_INET6;
579 #if defined(__FreeBSD__) && __FreeBSD_cc_version < 440000
580 final.sin6_addr = *ip6cp->ip6c_finaldst;
581 #else
582 final.sin6_addr = ((struct sockaddr_in6 *)pktdst)->sin6_addr;
583 #endif /* __FreeBSD_cc_version */
584 final.sin6_port = sh.dest_port;
585 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&final,
586 (struct sockaddr *)ip6cp->ip6c_src,
587 &inp, &net, 1, vrf_id);
588 /* inp's ref-count increased && stcb locked */
589 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
590 if (cmd == PRC_MSGSIZE) {
591 sctp6_notify_mbuf(inp,
592 ip6cp->ip6c_icmp6,
593 &sh,
594 stcb,
595 net);
596 /* inp's ref-count reduced && stcb unlocked */
597 } else {
598 sctp6_notify(inp, ip6cp->ip6c_icmp6, &sh,
599 (struct sockaddr *)&final,
600 stcb, net);
601 /* inp's ref-count reduced && stcb unlocked */
602 }
603 } else {
604 #if !defined(__Windows__)
605 if (PRC_IS_REDIRECT(cmd) && inp) {
606 in6_rtchange((struct in6pcb *)inp,
607 inet6ctlerrmap[cmd]);
608 }
609 #endif
610 if (inp) {
611 /* reduce inp's ref-count */
612 SCTP_INP_WLOCK(inp);
613 SCTP_INP_DECR_REF(inp);
614 SCTP_INP_WUNLOCK(inp);
615 }
616 if (stcb)
617 SCTP_TCB_UNLOCK(stcb);
618 }
619 }
620 }
621 #endif
622
623 /*
624 * this routine can probably be collasped into the one in sctp_userreq.c
625 * since they do the same thing and now we lookup with a sockaddr
626 */
627 #ifdef __FreeBSD__
628 static int
629 sctp6_getcred(SYSCTL_HANDLER_ARGS)
630 {
631 struct xucred xuc;
632 struct sockaddr_in6 addrs[2];
633 struct sctp_inpcb *inp;
634 struct sctp_nets *net;
635 struct sctp_tcb *stcb;
636 int error;
637 uint32_t vrf_id;
638
639 #if defined(__FreeBSD__) || defined(__APPLE__)
640 vrf_id = SCTP_DEFAULT_VRFID;
641 #else
642 vrf_id = panda_get_vrf_from_call(); /* from connectx call? */
643 #endif
644
645 #if defined(__FreeBSD__) && __FreeBSD_version > 602000
646 error = priv_check(req->td, PRIV_NETINET_GETCRED);
647 #elif defined(__FreeBSD__) && __FreeBSD_version >= 500000
648 error = suser(req->td);
649 #else
650 error = suser(req->p);
651 #endif
652 if (error)
653 return (error);
654
655 if (req->newlen != sizeof(addrs)) {
656 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
657 return (EINVAL);
658 }
659 if (req->oldlen != sizeof(struct ucred)) {
660 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
661 return (EINVAL);
662 }
663 error = SYSCTL_IN(req, addrs, sizeof(addrs));
664 if (error)
665 return (error);
666
667 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]),
668 sin6tosa(&addrs[0]),
669 &inp, &net, 1, vrf_id);
670 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
671 if ((inp != NULL) && (stcb == NULL)) {
672 /* reduce ref-count */
673 SCTP_INP_WLOCK(inp);
674 SCTP_INP_DECR_REF(inp);
675 goto cred_can_cont;
676 }
677 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
678 error = ENOENT;
679 goto out;
680 }
681 SCTP_TCB_UNLOCK(stcb);
682 /* We use the write lock here, only
683 * since in the error leg we need it.
684 * If we used RLOCK, then we would have
685 * to wlock/decr/unlock/rlock. Which
686 * in theory could create a hole. Better
687 * to use higher wlock.
688 */
689 SCTP_INP_WLOCK(inp);
690 cred_can_cont:
691 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
692 if (error) {
693 SCTP_INP_WUNLOCK(inp);
694 goto out;
695 }
696 cru2x(inp->sctp_socket->so_cred, &xuc);
697 SCTP_INP_WUNLOCK(inp);
698 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
699 out:
700 return (error);
701 }
702
703 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
704 0, 0,
705 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection");
706
707 #endif
708
709 /* This is the same as the sctp_abort() could be made common */
710 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__)
711 static void
712 #elif defined(__Panda__) || defined(__Userspace__)
713 int
714 #else
715 static int
716 #endif
717 sctp6_abort(struct socket *so)
718 {
719 struct sctp_inpcb *inp;
720 uint32_t flags;
721
722 inp = (struct sctp_inpcb *)so->so_pcb;
723 if (inp == NULL) {
724 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
725 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__)
726 return;
727 #else
728 return (EINVAL);
729 #endif
730 }
731 sctp_must_try_again:
732 flags = inp->sctp_flags;
733 #ifdef SCTP_LOG_CLOSING
734 sctp_log_closing(inp, NULL, 17);
735 #endif
736 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
737 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
738 #ifdef SCTP_LOG_CLOSING
739 sctp_log_closing(inp, NULL, 16);
740 #endif
741 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
742 SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
743 SOCK_LOCK(so);
744 SCTP_SB_CLEAR(so->so_snd);
745 /* same for the rcv ones, they are only
746 * here for the accounting/select.
747 */
748 SCTP_SB_CLEAR(so->so_rcv);
749 #if defined(__APPLE__)
750 so->so_usecount--;
751 #else
752 /* Now null out the reference, we are completely detached. */
753 so->so_pcb = NULL;
754 #endif
755 SOCK_UNLOCK(so);
756 } else {
757 flags = inp->sctp_flags;
758 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
759 goto sctp_must_try_again;
760 }
761 }
762 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__)
763 return;
764 #else
765 return (0);
766 #endif
767 }
768
769 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
770 static int
771 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED)
772 #elif defined(__Panda__) || defined(__Userspace__)
773 int
774 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, uint32_t vrf_id)
775 #elif defined(__Windows__)
776 static int
777 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, PKTHREAD p SCTP_UNUSED)
778 #else
779 static int
780 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct proc *p SCTP_UNUSED)
781 #endif
782 {
783 struct in6pcb *inp6;
784 int error;
785 struct sctp_inpcb *inp;
786 #if !defined(__Panda__) && !defined(__Userspace__)
787 uint32_t vrf_id = SCTP_DEFAULT_VRFID;
788 #endif
789
790 inp = (struct sctp_inpcb *)so->so_pcb;
791 if (inp != NULL) {
792 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
793 return (EINVAL);
794 }
795
796 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
797 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
798 if (error)
799 return (error);
800 }
801 error = sctp_inpcb_alloc(so, vrf_id);
802 if (error)
803 return (error);
804 inp = (struct sctp_inpcb *)so->so_pcb;
805 SCTP_INP_WLOCK(inp);
806 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */
807 inp6 = (struct in6pcb *)inp;
808
809 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
810 inp6->inp_vflag |= INP_IPV6;
811 #else
812 inp->inp_vflag |= INP_IPV6;
813 #endif
814 #if !defined(__Panda__)
815 inp6->in6p_hops = -1; /* use kernel default */
816 inp6->in6p_cksum = -1; /* just to be sure */
817 #endif
818 #ifdef INET
819 /*
820 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6
821 * socket as well, because the socket may be bound to an IPv6
822 * wildcard address, which may match an IPv4-mapped IPv6 address.
823 */
824 inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
825 #endif
826 /*
827 * Hmm what about the IPSEC stuff that is missing here but in
828 * sctp_attach()?
829 */
830 SCTP_INP_WUNLOCK(inp);
831 return (0);
832 }
833
834 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
835 static int
836 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
837 {
838 #elif defined(__FreeBSD__) || defined(__APPLE__)
839 static int
840 sctp6_bind(struct socket *so, struct sockaddr *addr, struct proc *p)
841 {
842 #elif defined(__Panda__) || defined(__Userspace__)
843 int
844 sctp6_bind(struct socket *so, struct sockaddr *addr, void * p)
845 {
846 #elif defined(__Windows__)
847 static int
848 sctp6_bind(struct socket *so, struct sockaddr *addr, PKTHREAD p)
849 {
850 #else
851 static int
852 sctp6_bind(struct socket *so, struct mbuf *nam, struct proc *p)
853 {
854 struct sockaddr *addr = nam ? mtod(nam, struct sockaddr *): NULL;
855
856 #endif
857 struct sctp_inpcb *inp;
858 struct in6pcb *inp6;
859 int error;
860
861 inp = (struct sctp_inpcb *)so->so_pcb;
862 if (inp == NULL) {
863 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
864 return (EINVAL);
865 }
866
867 #if !defined(__Windows__)
868 if (addr) {
869 switch (addr->sa_family) {
870 #ifdef INET
871 case AF_INET:
872 #ifdef HAVE_SA_LEN
873 if (addr->sa_len != sizeof(struct sockaddr_in)) {
874 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
875 return (EINVAL);
876 }
877 #endif
878 break;
879 #endif
880 #ifdef INET6
881 case AF_INET6:
882 #ifdef HAVE_SA_LEN
883 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
884 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
885 return (EINVAL);
886 }
887 #endif
888 break;
889 #endif
890 default:
891 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
892 return (EINVAL);
893 }
894 }
895 #endif
896 inp6 = (struct in6pcb *)inp;
897 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
898 inp6->inp_vflag &= ~INP_IPV4;
899 inp6->inp_vflag |= INP_IPV6;
900 #else
901 inp->inp_vflag &= ~INP_IPV4;
902 inp->inp_vflag |= INP_IPV6;
903 #endif
904 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) {
905 switch (addr->sa_family) {
906 #ifdef INET
907 case AF_INET:
908 /* binding v4 addr to v6 socket, so reset flags */
909 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
910 inp6->inp_vflag |= INP_IPV4;
911 inp6->inp_vflag &= ~INP_IPV6;
912 #else
913 inp->inp_vflag |= INP_IPV4;
914 inp->inp_vflag &= ~INP_IPV6;
915 #endif
916 break;
917 #endif
918 #ifdef INET6
919 case AF_INET6:
920 {
921 struct sockaddr_in6 *sin6_p;
922
923 sin6_p = (struct sockaddr_in6 *)addr;
924
925 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) {
926 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
927 inp6->inp_vflag |= INP_IPV4;
928 #else
929 inp->inp_vflag |= INP_IPV4;
930 #endif
931 }
932 #ifdef INET
933 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
934 struct sockaddr_in sin;
935
936 in6_sin6_2_sin(&sin, sin6_p);
937 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
938 inp6->inp_vflag |= INP_IPV4;
939 inp6->inp_vflag &= ~INP_IPV6;
940 #else
941 inp->inp_vflag |= INP_IPV4;
942 inp->inp_vflag &= ~INP_IPV6;
943 #endif
944 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p);
945 return (error);
946 }
947 #endif
948 break;
949 }
950 #endif
951 default:
952 break;
953 }
954 } else if (addr != NULL) {
955 struct sockaddr_in6 *sin6_p;
956
957 /* IPV6_V6ONLY socket */
958 #ifdef INET
959 if (addr->sa_family == AF_INET) {
960 /* can't bind v4 addr to v6 only socket! */
961 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
962 return (EINVAL);
963 }
964 #endif
965 sin6_p = (struct sockaddr_in6 *)addr;
966
967 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
968 /* can't bind v4-mapped addrs either! */
969 /* NOTE: we don't support SIIT */
970 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
971 return (EINVAL);
972 }
973 }
974 error = sctp_inpcb_bind(so, addr, NULL, p);
975 return (error);
976 }
977
978
979 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__) || defined(__Userspace__)
980 #if !defined(__Userspace__)
981 static void
982 #else
983 void
984 #endif
985 sctp6_close(struct socket *so)
986 {
987 sctp_close(so);
988 }
989
990 /* This could be made common with sctp_detach() since they are identical */
991 #else
992
993 #if !defined(__Panda__)
994 static
995 #endif
996 int
997 sctp6_detach(struct socket *so)
998 {
999 #if defined(__Userspace__)
1000 sctp_close(so);
1001 return (0);
1002 #else
1003 return (sctp_detach(so));
1004 #endif
1005 }
1006
1007 #endif
1008
1009 #if !defined(__Panda__) && !defined(__Userspace__)
1010 static
1011 #endif
1012 int
1013 sctp6_disconnect(struct socket *so)
1014 {
1015 return (sctp_disconnect(so));
1016 }
1017
1018
1019 int
1020 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
1021 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
1022 struct mbuf *control, struct thread *p);
1023
1024 #else
1025 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
1026 struct mbuf *control, struct proc *p);
1027
1028 #endif
1029
1030 #if !defined(__Panda__) && !defined(__Windows__) && !defined(__Userspace__)
1031 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
1032 static int
1033 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
1034 struct mbuf *control, struct thread *p)
1035 {
1036 #elif defined(__FreeBSD__) || defined(__APPLE__)
1037 static int
1038 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
1039 struct mbuf *control, struct proc *p)
1040 {
1041 #else
1042 static int
1043 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct mbuf *nam,
1044 struct mbuf *control, struct proc *p)
1045 {
1046 struct sockaddr *addr = nam ? mtod(nam, struct sockaddr *): NULL;
1047 #endif
1048 struct sctp_inpcb *inp;
1049 struct in6pcb *inp6;
1050
1051 #ifdef INET
1052 struct sockaddr_in6 *sin6;
1053 #endif /* INET */
1054 /* No SPL needed since sctp_output does this */
1055
1056 inp = (struct sctp_inpcb *)so->so_pcb;
1057 if (inp == NULL) {
1058 if (control) {
1059 SCTP_RELEASE_PKT(control);
1060 control = NULL;
1061 }
1062 SCTP_RELEASE_PKT(m);
1063 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1064 return (EINVAL);
1065 }
1066 inp6 = (struct in6pcb *)inp;
1067 /*
1068 * For the TCP model we may get a NULL addr, if we are a connected
1069 * socket thats ok.
1070 */
1071 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) &&
1072 (addr == NULL)) {
1073 goto connected_type;
1074 }
1075 if (addr == NULL) {
1076 SCTP_RELEASE_PKT(m);
1077 if (control) {
1078 SCTP_RELEASE_PKT(control);
1079 control = NULL;
1080 }
1081 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ);
1082 return (EDESTADDRREQ);
1083 }
1084 #ifdef INET
1085 sin6 = (struct sockaddr_in6 *)addr;
1086 if (SCTP_IPV6_V6ONLY(inp6)) {
1087 /*
1088 * if IPV6_V6ONLY flag, we discard datagrams destined to a
1089 * v4 addr or v4-mapped addr
1090 */
1091 if (addr->sa_family == AF_INET) {
1092 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1093 return (EINVAL);
1094 }
1095 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
1096 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1097 return (EINVAL);
1098 }
1099 }
1100 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
1101 struct sockaddr_in sin;
1102
1103 /* convert v4-mapped into v4 addr and send */
1104 in6_sin6_2_sin(&sin, sin6);
1105 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p));
1106 }
1107 #endif /* INET */
1108 connected_type:
1109 /* now what about control */
1110 if (control) {
1111 if (inp->control) {
1112 SCTP_PRINTF("huh? control set?\n");
1113 SCTP_RELEASE_PKT(inp->control);
1114 inp->control = NULL;
1115 }
1116 inp->control = control;
1117 }
1118 /* Place the data */
1119 if (inp->pkt) {
1120 SCTP_BUF_NEXT(inp->pkt_last) = m;
1121 inp->pkt_last = m;
1122 } else {
1123 inp->pkt_last = inp->pkt = m;
1124 }
1125 if (
1126 #if defined(__FreeBSD__) || defined(__APPLE__)
1127 /* FreeBSD and MacOSX uses a flag passed */
1128 ((flags & PRUS_MORETOCOME) == 0)
1129 #else
1130 1 /* Open BSD does not have any "more to come"
1131 * indication */
1132 #endif
1133 ) {
1134 /*
1135 * note with the current version this code will only be used
1136 * by OpenBSD, NetBSD and FreeBSD have methods for
1137 * re-defining sosend() to use sctp_sosend(). One can
1138 * optionaly switch back to this code (by changing back the
1139 * defininitions but this is not advisable.
1140 */
1141 int ret;
1142
1143 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
1144 inp->pkt = NULL;
1145 inp->control = NULL;
1146 return (ret);
1147 } else {
1148 return (0);
1149 }
1150 }
1151 #endif
1152
1153 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
1154 static int
1155 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
1156 {
1157 #elif defined(__FreeBSD__) || defined(__APPLE__)
1158 static int
1159 sctp6_connect(struct socket *so, struct sockaddr *addr, struct proc *p)
1160 {
1161 #elif defined(__Panda__)
1162 int
1163 sctp6_connect(struct socket *so, struct sockaddr *addr, void *p)
1164 {
1165 #elif defined(__Windows__)
1166 static int
1167 sctp6_connect(struct socket *so, struct sockaddr *addr, PKTHREAD p)
1168 {
1169 #elif defined(__Userspace__)
1170 int
1171 sctp6_connect(struct socket *so, struct sockaddr *addr)
1172 {
1173 void *p = NULL;
1174 #else
1175 static int
1176 sctp6_connect(struct socket *so, struct mbuf *nam, struct proc *p)
1177 {
1178 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1179 #endif
1180 uint32_t vrf_id;
1181 int error = 0;
1182 struct sctp_inpcb *inp;
1183 struct sctp_tcb *stcb;
1184 #ifdef INET
1185 struct in6pcb *inp6;
1186 struct sockaddr_in6 *sin6;
1187 struct sockaddr_storage ss;
1188 #endif
1189
1190 #ifdef INET
1191 inp6 = (struct in6pcb *)so->so_pcb;
1192 #endif
1193 inp = (struct sctp_inpcb *)so->so_pcb;
1194 if (inp == NULL) {
1195 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
1196 return (ECONNRESET); /* I made the same as TCP since we are
1197 * not setup? */
1198 }
1199 if (addr == NULL) {
1200 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1201 return (EINVAL);
1202 }
1203 #if !defined(__Windows__)
1204 switch (addr->sa_family) {
1205 #ifdef INET
1206 case AF_INET:
1207 #ifdef HAVE_SA_LEN
1208 if (addr->sa_len != sizeof(struct sockaddr_in)) {
1209 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1210 return (EINVAL);
1211 }
1212 #endif
1213 break;
1214 #endif
1215 #ifdef INET6
1216 case AF_INET6:
1217 #ifdef HAVE_SA_LEN
1218 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
1219 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1220 return (EINVAL);
1221 }
1222 #endif
1223 break;
1224 #endif
1225 default:
1226 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1227 return (EINVAL);
1228 }
1229 #endif
1230
1231 vrf_id = inp->def_vrf_id;
1232 SCTP_ASOC_CREATE_LOCK(inp);
1233 SCTP_INP_RLOCK(inp);
1234 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
1235 SCTP_PCB_FLAGS_UNBOUND) {
1236 /* Bind a ephemeral port */
1237 SCTP_INP_RUNLOCK(inp);
1238 error = sctp6_bind(so, NULL, p);
1239 if (error) {
1240 SCTP_ASOC_CREATE_UNLOCK(inp);
1241
1242 return (error);
1243 }
1244 SCTP_INP_RLOCK(inp);
1245 }
1246 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
1247 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
1248 /* We are already connected AND the TCP model */
1249 SCTP_INP_RUNLOCK(inp);
1250 SCTP_ASOC_CREATE_UNLOCK(inp);
1251 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE);
1252 return (EADDRINUSE);
1253 }
1254 #ifdef INET
1255 sin6 = (struct sockaddr_in6 *)addr;
1256 if (SCTP_IPV6_V6ONLY(inp6)) {
1257 /*
1258 * if IPV6_V6ONLY flag, ignore connections destined to a v4
1259 * addr or v4-mapped addr
1260 */
1261 if (addr->sa_family == AF_INET) {
1262 SCTP_INP_RUNLOCK(inp);
1263 SCTP_ASOC_CREATE_UNLOCK(inp);
1264 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1265 return (EINVAL);
1266 }
1267 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
1268 SCTP_INP_RUNLOCK(inp);
1269 SCTP_ASOC_CREATE_UNLOCK(inp);
1270 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1271 return (EINVAL);
1272 }
1273 }
1274 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
1275 /* convert v4-mapped into v4 addr */
1276 in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6);
1277 addr = (struct sockaddr *)&ss;
1278 }
1279 #endif /* INET */
1280 /* Now do we connect? */
1281 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1282 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1283 if (stcb) {
1284 SCTP_TCB_UNLOCK(stcb);
1285 }
1286 SCTP_INP_RUNLOCK(inp);
1287 } else {
1288 SCTP_INP_RUNLOCK(inp);
1289 SCTP_INP_WLOCK(inp);
1290 SCTP_INP_INCR_REF(inp);
1291 SCTP_INP_WUNLOCK(inp);
1292 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
1293 if (stcb == NULL) {
1294 SCTP_INP_WLOCK(inp);
1295 SCTP_INP_DECR_REF(inp);
1296 SCTP_INP_WUNLOCK(inp);
1297 }
1298 }
1299
1300 if (stcb != NULL) {
1301 /* Already have or am bring up an association */
1302 SCTP_ASOC_CREATE_UNLOCK(inp);
1303 SCTP_TCB_UNLOCK(stcb);
1304 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY);
1305 return (EALREADY);
1306 }
1307 /* We are GOOD to go */
1308 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, p);
1309 SCTP_ASOC_CREATE_UNLOCK(inp);
1310 if (stcb == NULL) {
1311 /* Gak! no memory */
1312 return (error);
1313 }
1314 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1315 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1316 /* Set the connected flag so we can queue data */
1317 soisconnecting(so);
1318 }
1319 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
1320 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1321
1322 /* initialize authentication parameters for the assoc */
1323 sctp_initialize_auth_params(inp, stcb);
1324
1325 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
1326 SCTP_TCB_UNLOCK(stcb);
1327 return (error);
1328 }
1329
1330 static int
1331 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1332 sctp6_getaddr(struct socket *so, struct sockaddr **addr)
1333 {
1334 struct sockaddr_in6 *sin6;
1335 #elif defined(__Panda__)
1336 sctp6_getaddr(struct socket *so, struct sockaddr *addr)
1337 {
1338 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
1339 #else
1340 sctp6_getaddr(struct socket *so, struct mbuf *nam)
1341 {
1342 struct sockaddr_in6 *sin6 = mtod(nam, struct sockaddr_in6 *);
1343 #endif
1344 struct sctp_inpcb *inp;
1345 uint32_t vrf_id;
1346 struct sctp_ifa *sctp_ifa;
1347
1348 #ifdef SCTP_KAME
1349 int error;
1350 #endif /* SCTP_KAME */
1351
1352 /*
1353 * Do the malloc first in case it blocks.
1354 */
1355 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1356 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6));
1357 if (sin6 == NULL)
1358 return (ENOMEM);
1359 #elif defined(__Panda__)
1360 bzero(sin6, sizeof(*sin6));
1361 #else
1362 SCTP_BUF_LEN(nam) = sizeof(*sin6);
1363 bzero(sin6, sizeof(*sin6));
1364 #endif
1365 sin6->sin6_family = AF_INET6;
1366 #ifdef HAVE_SIN6_LEN
1367 sin6->sin6_len = sizeof(*sin6);
1368 #endif
1369
1370 inp = (struct sctp_inpcb *)so->so_pcb;
1371 if (inp == NULL) {
1372 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1373 SCTP_FREE_SONAME(sin6);
1374 #endif
1375 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
1376 return (ECONNRESET);
1377 }
1378 SCTP_INP_RLOCK(inp);
1379 sin6->sin6_port = inp->sctp_lport;
1380 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1381 /* For the bound all case you get back 0 */
1382 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1383 struct sctp_tcb *stcb;
1384 struct sockaddr_in6 *sin_a6;
1385 struct sctp_nets *net;
1386 int fnd;
1387 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1388 if (stcb == NULL) {
1389 goto notConn6;
1390 }
1391 fnd = 0;
1392 sin_a6 = NULL;
1393 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1394 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1395 if (sin_a6 == NULL)
1396 /* this will make coverity happy */
1397 continue;
1398
1399 if (sin_a6->sin6_family == AF_INET6) {
1400 fnd = 1;
1401 break;
1402 }
1403 }
1404 if ((!fnd) || (sin_a6 == NULL)) {
1405 /* punt */
1406 goto notConn6;
1407 }
1408 vrf_id = inp->def_vrf_id;
1409 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id);
1410 if (sctp_ifa) {
1411 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr;
1412 }
1413 } else {
1414 /* For the bound all case you get back 0 */
1415 notConn6:
1416 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr));
1417 }
1418 } else {
1419 /* Take the first IPv6 address in the list */
1420 struct sctp_laddr *laddr;
1421 int fnd = 0;
1422
1423 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1424 if (laddr->ifa->address.sa.sa_family == AF_INET6) {
1425 struct sockaddr_in6 *sin_a;
1426
1427 sin_a = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
1428 sin6->sin6_addr = sin_a->sin6_addr;
1429 fnd = 1;
1430 break;
1431 }
1432 }
1433 if (!fnd) {
1434 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1435 SCTP_FREE_SONAME(sin6);
1436 #endif
1437 SCTP_INP_RUNLOCK(inp);
1438 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1439 return (ENOENT);
1440 }
1441 }
1442 SCTP_INP_RUNLOCK(inp);
1443 /* Scoping things for v6 */
1444 #ifdef SCTP_EMBEDDED_V6_SCOPE
1445 #ifdef SCTP_KAME
1446 if ((error = sa6_recoverscope(sin6)) != 0) {
1447 SCTP_FREE_SONAME(sin6);
1448 return (error);
1449 }
1450 #else
1451 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
1452 /* skip ifp check below */
1453 in6_recoverscope(sin6, &sin6->sin6_addr, NULL);
1454 else
1455 sin6->sin6_scope_id = 0; /* XXX */
1456 #endif /* SCTP_KAME */
1457 #endif /* SCTP_EMBEDDED_V6_SCOPE */
1458 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1459 (*addr) = (struct sockaddr *)sin6;
1460 #endif
1461 return (0);
1462 }
1463
1464 static int
1465 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1466 sctp6_peeraddr(struct socket *so, struct sockaddr **addr)
1467 {
1468 struct sockaddr_in6 *sin6;
1469 #elif defined(__Panda__)
1470 sctp6_peeraddr(struct socket *so, struct sockaddr *addr)
1471 {
1472 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
1473 #else
1474 sctp6_peeraddr(struct socket *so, struct mbuf *nam)
1475 {
1476 struct sockaddr_in6 *sin6 = mtod(nam, struct sockaddr_in6 *);
1477 #endif
1478 int fnd;
1479 struct sockaddr_in6 *sin_a6;
1480 struct sctp_inpcb *inp;
1481 struct sctp_tcb *stcb;
1482 struct sctp_nets *net;
1483 #ifdef SCTP_KAME
1484 int error;
1485 #endif
1486
1487 /* Do the malloc first in case it blocks. */
1488 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1489 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1490 if (sin6 == NULL)
1491 return (ENOMEM);
1492 #elif defined(__Panda__)
1493 memset(sin6, 0, sizeof(*sin6));
1494 #else
1495 SCTP_BUF_LEN(nam) = sizeof(*sin6);
1496 memset(sin6, 0, sizeof(*sin6));
1497 #endif
1498 sin6->sin6_family = AF_INET6;
1499 #ifdef HAVE_SIN6_LEN
1500 sin6->sin6_len = sizeof(*sin6);
1501 #endif
1502
1503 inp = (struct sctp_inpcb *)so->so_pcb;
1504 if ((inp == NULL) ||
1505 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
1506 /* UDP type and listeners will drop out here */
1507 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1508 SCTP_FREE_SONAME(sin6);
1509 #endif
1510 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN);
1511 return (ENOTCONN);
1512 }
1513 SCTP_INP_RLOCK(inp);
1514 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1515 if (stcb) {
1516 SCTP_TCB_LOCK(stcb);
1517 }
1518 SCTP_INP_RUNLOCK(inp);
1519 if (stcb == NULL) {
1520 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1521 SCTP_FREE_SONAME(sin6);
1522 #endif
1523 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
1524 return (ECONNRESET);
1525 }
1526 fnd = 0;
1527 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1528 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1529 if (sin_a6->sin6_family == AF_INET6) {
1530 fnd = 1;
1531 sin6->sin6_port = stcb->rport;
1532 sin6->sin6_addr = sin_a6->sin6_addr;
1533 break;
1534 }
1535 }
1536 SCTP_TCB_UNLOCK(stcb);
1537 if (!fnd) {
1538 /* No IPv4 address */
1539 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1540 SCTP_FREE_SONAME(sin6);
1541 #endif
1542 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1543 return (ENOENT);
1544 }
1545 #ifdef SCTP_EMBEDDED_V6_SCOPE
1546 #ifdef SCTP_KAME
1547 if ((error = sa6_recoverscope(sin6)) != 0)
1548 return (error);
1549 #else
1550 in6_recoverscope(sin6, &sin6->sin6_addr, NULL);
1551 #endif /* SCTP_KAME */
1552 #endif /* SCTP_EMBEDDED_V6_SCOPE */
1553 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1554 *addr = (struct sockaddr *)sin6;
1555 #endif
1556 return (0);
1557 }
1558
1559 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1560 static int
1561 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam)
1562 {
1563 #ifdef INET
1564 struct sockaddr *addr;
1565 #endif
1566 #elif defined(__Panda__)
1567 int
1568 sctp6_in6getaddr(struct socket *so, struct sockaddr *nam, uint32_t *namelen)
1569 {
1570 struct sockaddr *addr = nam;
1571 #elif defined(__Userspace__)
1572 int
1573 sctp6_in6getaddr(struct socket *so, struct mbuf *nam)
1574 {
1575 #ifdef INET
1576 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1577 #endif
1578 #else
1579 static int
1580 sctp6_in6getaddr(struct socket *so, struct mbuf *nam)
1581 {
1582 #ifdef INET
1583 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1584 #endif
1585 #endif
1586 struct in6pcb *inp6 = sotoin6pcb(so);
1587 int error;
1588
1589 if (inp6 == NULL) {
1590 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1591 return (EINVAL);
1592 }
1593
1594 /* allow v6 addresses precedence */
1595 error = sctp6_getaddr(so, nam);
1596 #ifdef INET
1597 if (error) {
1598 /* try v4 next if v6 failed */
1599 error = sctp_ingetaddr(so, nam);
1600 if (error) {
1601 return (error);
1602 }
1603 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1604 addr = *nam;
1605 #endif
1606 /* if I'm V6ONLY, convert it to v4-mapped */
1607 if (SCTP_IPV6_V6ONLY(inp6)) {
1608 struct sockaddr_in6 sin6;
1609
1610 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
1611 memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
1612 }
1613 }
1614 #endif
1615 #if defined(__Panda__)
1616 *namelen = nam->sa_len;
1617 #endif
1618 return (error);
1619 }
1620
1621
1622 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1623 static int
1624 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam)
1625 {
1626 #ifdef INET
1627 struct sockaddr *addr;
1628 #endif
1629 #elif defined(__Panda__)
1630 int
1631 sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam, uint32_t *namelen)
1632 {
1633 struct sockaddr *addr = (struct sockaddr *)nam;
1634 #elif defined(__Userspace__)
1635 int
1636 sctp6_getpeeraddr(struct socket *so, struct mbuf *nam)
1637 {
1638 #ifdef INET
1639 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1640 #endif
1641 #else
1642 static
1643 int
1644 sctp6_getpeeraddr(struct socket *so, struct mbuf *nam)
1645 {
1646 #ifdef INET
1647 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1648 #endif
1649
1650 #endif
1651 struct in6pcb *inp6 = sotoin6pcb(so);
1652 int error;
1653
1654 if (inp6 == NULL) {
1655 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1656 return (EINVAL);
1657 }
1658
1659 /* allow v6 addresses precedence */
1660 error = sctp6_peeraddr(so, nam);
1661 #ifdef INET
1662 if (error) {
1663 /* try v4 next if v6 failed */
1664 error = sctp_peeraddr(so, nam);
1665 if (error) {
1666 return (error);
1667 }
1668 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1669 addr = *nam;
1670 #endif
1671 /* if I'm V6ONLY, convert it to v4-mapped */
1672 if (SCTP_IPV6_V6ONLY(inp6)) {
1673 struct sockaddr_in6 sin6;
1674
1675 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
1676 memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
1677 }
1678 }
1679 #endif
1680 #if defined(__Panda__)
1681 *namelen = nam->sa_len;
1682 #endif
1683 return (error);
1684 }
1685
1686 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1687 struct pr_usrreqs sctp6_usrreqs = {
1688 #if defined(__FreeBSD__)
1689 .pru_abort = sctp6_abort,
1690 .pru_accept = sctp_accept,
1691 .pru_attach = sctp6_attach,
1692 .pru_bind = sctp6_bind,
1693 .pru_connect = sctp6_connect,
1694 .pru_control = in6_control,
1695 #if __FreeBSD_version >= 690000
1696 .pru_close = sctp6_close,
1697 .pru_detach = sctp6_close,
1698 .pru_sopoll = sopoll_generic,
1699 .pru_flush = sctp_flush,
1700 #else
1701 .pru_detach = sctp6_detach,
1702 .pru_sopoll = sopoll,
1703 #endif
1704 .pru_disconnect = sctp6_disconnect,
1705 .pru_listen = sctp_listen,
1706 .pru_peeraddr = sctp6_getpeeraddr,
1707 .pru_send = sctp6_send,
1708 .pru_shutdown = sctp_shutdown,
1709 .pru_sockaddr = sctp6_in6getaddr,
1710 .pru_sosend = sctp_sosend,
1711 .pru_soreceive = sctp_soreceive
1712 #elif defined(__APPLE__)
1713 .pru_abort = sctp6_abort,
1714 .pru_accept = sctp_accept,
1715 .pru_attach = sctp6_attach,
1716 .pru_bind = sctp6_bind,
1717 .pru_connect = sctp6_connect,
1718 .pru_connect2 = pru_connect2_notsupp,
1719 .pru_control = in6_control,
1720 .pru_detach = sctp6_detach,
1721 .pru_disconnect = sctp6_disconnect,
1722 .pru_listen = sctp_listen,
1723 .pru_peeraddr = sctp6_getpeeraddr,
1724 .pru_rcvd = NULL,
1725 .pru_rcvoob = pru_rcvoob_notsupp,
1726 .pru_send = sctp6_send,
1727 .pru_sense = pru_sense_null,
1728 .pru_shutdown = sctp_shutdown,
1729 .pru_sockaddr = sctp6_in6getaddr,
1730 .pru_sosend = sctp_sosend,
1731 .pru_soreceive = sctp_soreceive,
1732 .pru_sopoll = sopoll
1733 #elif defined(__Windows__)
1734 sctp6_abort,
1735 sctp_accept,
1736 sctp6_attach,
1737 sctp6_bind,
1738 sctp6_connect,
1739 pru_connect2_notsupp,
1740 NULL,
1741 NULL,
1742 sctp6_disconnect,
1743 sctp_listen,
1744 sctp6_getpeeraddr,
1745 NULL,
1746 pru_rcvoob_notsupp,
1747 NULL,
1748 pru_sense_null,
1749 sctp_shutdown,
1750 sctp_flush,
1751 sctp6_in6getaddr,
1752 sctp_sosend,
1753 sctp_soreceive,
1754 sopoll_generic,
1755 NULL,
1756 sctp6_close
1757 #endif
1758 };
1759
1760 #elif !defined(__Panda__) && !defined(__Userspace__)
1761 int
1762 sctp6_usrreq(so, req, m, nam, control, p)
1763 struct socket *so;
1764 int req;
1765 struct mbuf *m, *nam, *control;
1766 struct proc *p;
1767 {
1768 int s;
1769 int error = 0;
1770 int family;
1771 uint32_t vrf_id;
1772 family = so->so_proto->pr_domain->dom_family;
1773
1774 if (req == PRU_CONTROL) {
1775 switch (family) {
1776 case PF_INET:
1777 error = in_control(so, (long)m, (caddr_t)nam,
1778 (struct ifnet *)control
1779 );
1780 #ifdef INET6
1781 case PF_INET6:
1782 error = in6_control(so, (long)m, (caddr_t)nam,
1783 (struct ifnet *)control, p);
1784 #endif
1785 default:
1786 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT);
1787 error = EAFNOSUPPORT;
1788 }
1789 return (error);
1790 }
1791 switch (req) {
1792 case PRU_ATTACH:
1793 error = sctp6_attach(so, family, p);
1794 break;
1795 case PRU_DETACH:
1796 error = sctp6_detach(so);
1797 break;
1798 case PRU_BIND:
1799 if (nam == NULL) {
1800 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1801 return (EINVAL);
1802 }
1803 error = sctp6_bind(so, nam, p);
1804 break;
1805 case PRU_LISTEN:
1806 error = sctp_listen(so, p);
1807 break;
1808 case PRU_CONNECT:
1809 if (nam == NULL) {
1810 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1811 return (EINVAL);
1812 }
1813 error = sctp6_connect(so, nam, p);
1814 break;
1815 case PRU_DISCONNECT:
1816 error = sctp6_disconnect(so);
1817 break;
1818 case PRU_ACCEPT:
1819 if (nam == NULL) {
1820 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1821 return (EINVAL);
1822 }
1823 error = sctp_accept(so, nam);
1824 break;
1825 case PRU_SHUTDOWN:
1826 error = sctp_shutdown(so);
1827 break;
1828
1829 case PRU_RCVD:
1830 /*
1831 * For OpenBSD and NetBSD, this is real ugly. The (mbuf *)
1832 * nam that is passed (by soreceive()) is the int flags cast
1833 * as a (mbuf *) yuck!
1834 */
1835 error = sctp_usr_recvd(so, (int)((long)nam));
1836 break;
1837
1838 case PRU_SEND:
1839 /* Flags are ignored */
1840 error = sctp6_send(so, 0, m, nam, control, p);
1841 break;
1842 case PRU_ABORT:
1843 error = sctp6_abort(so);
1844 break;
1845
1846 case PRU_SENSE:
1847 error = 0;
1848 break;
1849 case PRU_RCVOOB:
1850 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT);
1851 error = EAFNOSUPPORT;
1852 break;
1853 case PRU_SENDOOB:
1854 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT);
1855 error = EAFNOSUPPORT;
1856 break;
1857 case PRU_PEERADDR:
1858 error = sctp6_getpeeraddr(so, nam);
1859 break;
1860 case PRU_SOCKADDR:
1861 error = sctp6_in6getaddr(so, nam);
1862 break;
1863 case PRU_SLOWTIMO:
1864 error = 0;
1865 break;
1866 default:
1867 break;
1868 }
1869 return (error);
1870 }
1871 #endif
1872 #endif

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