1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 *
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
17 *
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #ifdef __FreeBSD__
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD: head/sys/netinet6/sctp6_usrreq.c 358083 2020-02-18 21:25:17Z tuexen $");
38 #endif
39
40 #include <netinet/sctp_os.h>
41 #ifdef INET6
42 #ifdef __FreeBSD__
43 #include <sys/proc.h>
44 #endif
45 #include <netinet/sctp_pcb.h>
46 #include <netinet/sctp_header.h>
47 #include <netinet/sctp_var.h>
48 #include <netinet6/sctp6_var.h>
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/icmp6.h>
63 #include <netinet/udp.h>
64 #endif
65 #if defined(__APPLE__)
66 #define APPLE_FILE_NO 9
67 #endif
68 #if defined(__Panda__) || defined(__Userspace__)
69 int ip6_v6only=0;
70 #endif
71 #if defined(__Userspace__)
72 #ifdef INET
73 void
in6_sin6_2_sin(struct sockaddr_in * sin,struct sockaddr_in6 * sin6)74 in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
75 {
76 #if defined(__Userspace_os_Windows)
77 uint32_t temp;
78 #endif
79 memset(sin, 0, sizeof(*sin));
80 #ifdef HAVE_SIN_LEN
81 sin->sin_len = sizeof(struct sockaddr_in);
82 #endif
83 sin->sin_family = AF_INET;
84 sin->sin_port = sin6->sin6_port;
85 #if defined(__Userspace_os_Windows)
86 temp = sin6->sin6_addr.s6_addr16[7];
87 temp = temp << 16;
88 temp = temp | sin6->sin6_addr.s6_addr16[6];
89 sin->sin_addr.s_addr = temp;
90 #else
91 sin->sin_addr.s_addr = sin6->sin6_addr.s6_addr32[3];
92 #endif
93 }
94
95 void
in6_sin6_2_sin_in_sock(struct sockaddr * nam)96 in6_sin6_2_sin_in_sock(struct sockaddr *nam)
97 {
98 struct sockaddr_in *sin_p;
99 struct sockaddr_in6 sin6;
100
101 /* save original sockaddr_in6 addr and convert it to sockaddr_in */
102 sin6 = *(struct sockaddr_in6 *)nam;
103 sin_p = (struct sockaddr_in *)nam;
104 in6_sin6_2_sin(sin_p, &sin6);
105 }
106
107 void
in6_sin_2_v4mapsin6(const struct sockaddr_in * sin,struct sockaddr_in6 * sin6)108 in6_sin_2_v4mapsin6(const struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
109 {
110 memset(sin6, 0, sizeof(struct sockaddr_in6));
111 sin6->sin6_family = AF_INET6;
112 #ifdef HAVE_SIN6_LEN
113 sin6->sin6_len = sizeof(struct sockaddr_in6);
114 #endif
115 sin6->sin6_port = sin->sin_port;
116 #if defined(__Userspace_os_Windows)
117 ((uint32_t *)&sin6->sin6_addr)[0] = 0;
118 ((uint32_t *)&sin6->sin6_addr)[1] = 0;
119 ((uint32_t *)&sin6->sin6_addr)[2] = htonl(0xffff);
120 ((uint32_t *)&sin6->sin6_addr)[3] = sin->sin_addr.s_addr;
121 #else
122 sin6->sin6_addr.s6_addr32[0] = 0;
123 sin6->sin6_addr.s6_addr32[1] = 0;
124 sin6->sin6_addr.s6_addr32[2] = htonl(0xffff);
125 sin6->sin6_addr.s6_addr32[3] = sin->sin_addr.s_addr;
126 #endif
127 }
128 #endif
129 #endif
130
131 #if !defined(__Userspace__)
132 int
133 #if defined(__APPLE__) || defined(__FreeBSD__)
sctp6_input_with_port(struct mbuf ** i_pak,int * offp,uint16_t port)134 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port)
135 #elif defined( __Panda__)
136 sctp6_input(pakhandle_type *i_pak)
137 #else
138 sctp6_input(struct mbuf **i_pak, int *offp, int proto)
139 #endif
140 {
141 struct mbuf *m;
142 int iphlen;
143 uint32_t vrf_id;
144 uint8_t ecn_bits;
145 struct sockaddr_in6 src, dst;
146 struct ip6_hdr *ip6;
147 struct sctphdr *sh;
148 struct sctp_chunkhdr *ch;
149 int length, offset;
150 uint8_t compute_crc;
151 #if defined(__FreeBSD__)
152 uint32_t mflowid;
153 uint8_t mflowtype;
154 uint16_t fibnum;
155 #endif
156 #if !(defined(__APPLE__) || defined (__FreeBSD__))
157 uint16_t port = 0;
158 #endif
159
160 #if defined(__Panda__)
161 /* This is Evil, but its the only way to make panda work right. */
162 iphlen = sizeof(struct ip6_hdr);
163 #else
164 iphlen = *offp;
165 #endif
166 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) {
167 SCTP_RELEASE_PKT(*i_pak);
168 return (IPPROTO_DONE);
169 }
170 m = SCTP_HEADER_TO_CHAIN(*i_pak);
171 #ifdef __Panda__
172 SCTP_DETACH_HEADER_FROM_CHAIN(*i_pak);
173 (void)SCTP_RELEASE_HEADER(*i_pak);
174 #endif
175 #ifdef SCTP_MBUF_LOGGING
176 /* Log in any input mbufs */
177 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
178 sctp_log_mbc(m, SCTP_MBUF_INPUT);
179 }
180 #endif
181 #ifdef SCTP_PACKET_LOGGING
182 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) {
183 sctp_packet_log(m);
184 }
185 #endif
186 #if defined(__FreeBSD__)
187 #if __FreeBSD_version > 1000049
188 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
189 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n",
190 m->m_pkthdr.len,
191 if_name(m->m_pkthdr.rcvif),
192 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
193 #elif __FreeBSD_version >= 800000
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 if_name(m->m_pkthdr.rcvif),
198 m->m_pkthdr.csum_flags);
199 #else
200 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
201 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n",
202 m->m_pkthdr.len,
203 m->m_pkthdr.rcvif->if_xname,
204 m->m_pkthdr.csum_flags);
205 #endif
206 #endif
207 #if defined(__APPLE__)
208 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
209 "sctp6_input(): Packet of length %d received on %s%d with csum_flags 0x%x.\n",
210 m->m_pkthdr.len,
211 m->m_pkthdr.rcvif->if_name,
212 m->m_pkthdr.rcvif->if_unit,
213 m->m_pkthdr.csum_flags);
214 #endif
215 #if defined(__Windows__)
216 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
217 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n",
218 m->m_pkthdr.len,
219 m->m_pkthdr.rcvif->if_xname,
220 m->m_pkthdr.csum_flags);
221 #endif
222 #if defined(__FreeBSD__)
223 mflowid = m->m_pkthdr.flowid;
224 mflowtype = M_HASHTYPE_GET(m);
225 fibnum = M_GETFIB(m);
226 #endif
227 SCTP_STAT_INCR(sctps_recvpackets);
228 SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
229 /* Get IP, SCTP, and first chunk header together in the first mbuf. */
230 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr);
231 if (m->m_len < offset) {
232 m = m_pullup(m, offset);
233 if (m == NULL) {
234 SCTP_STAT_INCR(sctps_hdrops);
235 return (IPPROTO_DONE);
236 }
237 }
238 ip6 = mtod(m, struct ip6_hdr *);
239 sh = (struct sctphdr *)(mtod(m, caddr_t) + iphlen);
240 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
241 offset -= sizeof(struct sctp_chunkhdr);
242 memset(&src, 0, sizeof(struct sockaddr_in6));
243 src.sin6_family = AF_INET6;
244 #ifdef HAVE_SIN6_LEN
245 src.sin6_len = sizeof(struct sockaddr_in6);
246 #endif
247 src.sin6_port = sh->src_port;
248 src.sin6_addr = ip6->ip6_src;
249 #if defined(__FreeBSD__)
250 #if defined(__APPLE__)
251 /* XXX: This code should also be used on Apple */
252 #endif
253 if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
254 goto out;
255 }
256 #endif
257 memset(&dst, 0, sizeof(struct sockaddr_in6));
258 dst.sin6_family = AF_INET6;
259 #ifdef HAVE_SIN6_LEN
260 dst.sin6_len = sizeof(struct sockaddr_in6);
261 #endif
262 dst.sin6_port = sh->dest_port;
263 dst.sin6_addr = ip6->ip6_dst;
264 #if defined(__FreeBSD__)
265 #if defined(__APPLE__)
266 /* XXX: This code should also be used on Apple */
267 #endif
268 if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
269 goto out;
270 }
271 #endif
272 #if defined(__APPLE__)
273 #if defined(NFAITH) && 0 < NFAITH
274 if (faithprefix(&dst.sin6_addr)) {
275 goto out;
276 }
277 #endif
278 #endif
279 length = ntohs(ip6->ip6_plen) + iphlen;
280 /* Validate mbuf chain length with IP payload length. */
281 if (SCTP_HEADER_LEN(m) != length) {
282 SCTPDBG(SCTP_DEBUG_INPUT1,
283 "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m));
284 SCTP_STAT_INCR(sctps_hdrops);
285 goto out;
286 }
287 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
288 goto out;
289 }
290 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff);
291 #if defined(__FreeBSD__) && __FreeBSD_version >= 800000
292 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) {
293 SCTP_STAT_INCR(sctps_recvhwcrc);
294 compute_crc = 0;
295 } else {
296 #else
297 if (SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback) &&
298 (IN6_ARE_ADDR_EQUAL(&src.sin6_addr, &dst.sin6_addr))) {
299 SCTP_STAT_INCR(sctps_recvhwcrc);
300 compute_crc = 0;
301 } else {
302 #endif
303 SCTP_STAT_INCR(sctps_recvswcrc);
304 compute_crc = 1;
305 }
306 sctp_common_input_processing(&m, iphlen, offset, length,
307 (struct sockaddr *)&src,
308 (struct sockaddr *)&dst,
309 sh, ch,
310 compute_crc,
311 ecn_bits,
312 #if defined(__FreeBSD__)
313 mflowtype, mflowid, fibnum,
314 #endif
315 vrf_id, port);
316 out:
317 if (m) {
318 sctp_m_freem(m);
319 }
320 return (IPPROTO_DONE);
321 }
322
323 #if defined(__APPLE__)
324 int
325 sctp6_input(struct mbuf **i_pak, int *offp)
326 {
327 return (sctp6_input_with_port(i_pak, offp, 0));
328 }
329 #endif
330
331 #if defined(__FreeBSD__)
332 int
333 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED)
334 {
335 return (sctp6_input_with_port(i_pak, offp, 0));
336 }
337 #endif
338
339 void
340 sctp6_notify(struct sctp_inpcb *inp,
341 struct sctp_tcb *stcb,
342 struct sctp_nets *net,
343 uint8_t icmp6_type,
344 uint8_t icmp6_code,
345 uint32_t next_mtu)
346 {
347 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
348 struct socket *so;
349 #endif
350 int timer_stopped;
351
352 switch (icmp6_type) {
353 case ICMP6_DST_UNREACH:
354 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) ||
355 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) ||
356 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) ||
357 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) {
358 /* Mark the net unreachable. */
359 if (net->dest_state & SCTP_ADDR_REACHABLE) {
360 /* Ok that destination is not reachable */
361 net->dest_state &= ~SCTP_ADDR_REACHABLE;
362 net->dest_state &= ~SCTP_ADDR_PF;
363 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
364 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED);
365 }
366 }
367 SCTP_TCB_UNLOCK(stcb);
368 break;
369 case ICMP6_PARAM_PROB:
370 /* Treat it like an ABORT. */
371 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) {
372 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED);
373 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
374 so = SCTP_INP_SO(inp);
375 atomic_add_int(&stcb->asoc.refcnt, 1);
376 SCTP_TCB_UNLOCK(stcb);
377 SCTP_SOCKET_LOCK(so, 1);
378 SCTP_TCB_LOCK(stcb);
379 atomic_subtract_int(&stcb->asoc.refcnt, 1);
380 #endif
381 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
382 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
383 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
384 SCTP_SOCKET_UNLOCK(so, 1);
385 #endif
386 } else {
387 SCTP_TCB_UNLOCK(stcb);
388 }
389 break;
390 case ICMP6_PACKET_TOO_BIG:
391 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
392 SCTP_TCB_UNLOCK(stcb);
393 break;
394 }
395 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
396 timer_stopped = 1;
397 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
398 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1);
399 } else {
400 timer_stopped = 0;
401 }
402 /* Update the path MTU. */
403 if (net->port) {
404 next_mtu -= sizeof(struct udphdr);
405 }
406 if (net->mtu > next_mtu) {
407 net->mtu = next_mtu;
408 #if defined(__FreeBSD__)
409 if (net->port) {
410 sctp_hc_set_mtu(&net->ro._l_addr, inp->fibnum, next_mtu + sizeof(struct udphdr));
411 } else {
412 sctp_hc_set_mtu(&net->ro._l_addr, inp->fibnum, next_mtu);
413 }
414 #endif
415 }
416 /* Update the association MTU */
417 if (stcb->asoc.smallest_mtu > next_mtu) {
418 sctp_pathmtu_adjustment(stcb, next_mtu);
419 }
420 /* Finally, start the PMTU timer if it was running before. */
421 if (timer_stopped) {
422 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
423 }
424 SCTP_TCB_UNLOCK(stcb);
425 break;
426 default:
427 SCTP_TCB_UNLOCK(stcb);
428 break;
429 }
430 }
431
432 void
433 #if defined(__APPLE__) && !defined(APPLE_LEOPARD) && !defined(APPLE_SNOWLEOPARD) && !defined(APPLE_LION) && !defined(APPLE_MOUNTAINLION) && !defined(APPLE_ELCAPITAN)
434 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d, struct ifnet *ifp SCTP_UNUSED)
435 #else
436 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d)
437 #endif
438 {
439 struct ip6ctlparam *ip6cp;
440 struct sctp_inpcb *inp;
441 struct sctp_tcb *stcb;
442 struct sctp_nets *net;
443 struct sctphdr sh;
444 struct sockaddr_in6 src, dst;
445
446 #ifdef HAVE_SA_LEN
447 if (pktdst->sa_family != AF_INET6 ||
448 pktdst->sa_len != sizeof(struct sockaddr_in6)) {
449 #else
450 if (pktdst->sa_family != AF_INET6) {
451 #endif
452 return;
453 }
454
455 if ((unsigned)cmd >= PRC_NCMDS) {
456 return;
457 }
458 if (PRC_IS_REDIRECT(cmd)) {
459 d = NULL;
460 } else if (inet6ctlerrmap[cmd] == 0) {
461 return;
462 }
463 /* If the parameter is from icmp6, decode it. */
464 if (d != NULL) {
465 ip6cp = (struct ip6ctlparam *)d;
466 } else {
467 ip6cp = (struct ip6ctlparam *)NULL;
468 }
469
470 if (ip6cp != NULL) {
471 /*
472 * XXX: We assume that when IPV6 is non NULL, M and OFF are
473 * valid.
474 */
475 if (ip6cp->ip6c_m == NULL) {
476 return;
477 }
478
479 /* Check if we can safely examine the ports and the
480 * verification tag of the SCTP common header.
481 */
482 if (ip6cp->ip6c_m->m_pkthdr.len <
483 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) {
484 return;
485 }
486
487 /* Copy out the port numbers and the verification tag. */
488 memset(&sh, 0, sizeof(sh));
489 m_copydata(ip6cp->ip6c_m,
490 ip6cp->ip6c_off,
491 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
492 (caddr_t)&sh);
493 memset(&src, 0, sizeof(struct sockaddr_in6));
494 src.sin6_family = AF_INET6;
495 #ifdef HAVE_SIN6_LEN
496 src.sin6_len = sizeof(struct sockaddr_in6);
497 #endif
498 src.sin6_port = sh.src_port;
499 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
500 #if defined(__FreeBSD__)
501 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
502 return;
503 }
504 #endif
505 memset(&dst, 0, sizeof(struct sockaddr_in6));
506 dst.sin6_family = AF_INET6;
507 #ifdef HAVE_SIN6_LEN
508 dst.sin6_len = sizeof(struct sockaddr_in6);
509 #endif
510 dst.sin6_port = sh.dest_port;
511 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
512 #if defined(__FreeBSD__)
513 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
514 return;
515 }
516 #endif
517 inp = NULL;
518 net = NULL;
519 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
520 (struct sockaddr *)&src,
521 &inp, &net, 1, SCTP_DEFAULT_VRFID);
522 if ((stcb != NULL) &&
523 (net != NULL) &&
524 (inp != NULL)) {
525 /* Check the verification tag */
526 if (ntohl(sh.v_tag) != 0) {
527 /*
528 * This must be the verification tag used for
529 * sending out packets. We don't consider
530 * packets reflecting the verification tag.
531 */
532 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
533 SCTP_TCB_UNLOCK(stcb);
534 return;
535 }
536 } else {
537 #if defined(__FreeBSD__)
538 if (ip6cp->ip6c_m->m_pkthdr.len >=
539 ip6cp->ip6c_off + sizeof(struct sctphdr) +
540 sizeof(struct sctp_chunkhdr) +
541 offsetof(struct sctp_init, a_rwnd)) {
542 /*
543 * In this case we can check if we
544 * got an INIT chunk and if the
545 * initiate tag matches.
546 */
547 uint32_t initiate_tag;
548 uint8_t chunk_type;
549
550 m_copydata(ip6cp->ip6c_m,
551 ip6cp->ip6c_off +
552 sizeof(struct sctphdr),
553 sizeof(uint8_t),
554 (caddr_t)&chunk_type);
555 m_copydata(ip6cp->ip6c_m,
556 ip6cp->ip6c_off +
557 sizeof(struct sctphdr) +
558 sizeof(struct sctp_chunkhdr),
559 sizeof(uint32_t),
560 (caddr_t)&initiate_tag);
561 if ((chunk_type != SCTP_INITIATION) ||
562 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
563 SCTP_TCB_UNLOCK(stcb);
564 return;
565 }
566 } else {
567 SCTP_TCB_UNLOCK(stcb);
568 return;
569 }
570 #else
571 SCTP_TCB_UNLOCK(stcb);
572 return;
573 #endif
574 }
575 sctp6_notify(inp, stcb, net,
576 ip6cp->ip6c_icmp6->icmp6_type,
577 ip6cp->ip6c_icmp6->icmp6_code,
578 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
579 #if defined(__Userspace__)
580 if (!(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) &&
581 (stcb->sctp_socket != NULL) {
582 struct socket *upcall_socket;
583
584 upcall_socket = stcb->sctp_socket;
585 SOCK_LOCK(upcall_socket);
586 soref(upcall_socket);
587 SOCK_UNLOCK(upcall_socket);
588 if ((upcall_socket->so_upcall != NULL) &&
589 (upcall_socket->so_error != 0)) {
590 (*upcall_socket->so_upcall)(upcall_socket, upcall_socket->so_upcallarg, M_NOWAIT);
591 }
592 ACCEPT_LOCK();
593 SOCK_LOCK(upcall_socket);
594 sorele(upcall_socket);
595 }
596 #endif
597 } else {
598 #if defined(__FreeBSD__) && __FreeBSD_version < 500000
599 if (PRC_IS_REDIRECT(cmd) && (inp != NULL)) {
600 in6_rtchange(inp, inet6ctlerrmap[cmd]);
601 }
602 #endif
603 if ((stcb == NULL) && (inp != NULL)) {
604 /* reduce inp's ref-count */
605 SCTP_INP_WLOCK(inp);
606 SCTP_INP_DECR_REF(inp);
607 SCTP_INP_WUNLOCK(inp);
608 }
609 if (stcb) {
610 SCTP_TCB_UNLOCK(stcb);
611 }
612 }
613 }
614 }
615 #endif
616
617 /*
618 * this routine can probably be collasped into the one in sctp_userreq.c
619 * since they do the same thing and now we lookup with a sockaddr
620 */
621 #ifdef __FreeBSD__
622 static int
623 sctp6_getcred(SYSCTL_HANDLER_ARGS)
624 {
625 struct xucred xuc;
626 struct sockaddr_in6 addrs[2];
627 struct sctp_inpcb *inp;
628 struct sctp_nets *net;
629 struct sctp_tcb *stcb;
630 int error;
631 uint32_t vrf_id;
632
633 #if defined(__FreeBSD__) || defined(__APPLE__)
634 vrf_id = SCTP_DEFAULT_VRFID;
635 #else
636 vrf_id = panda_get_vrf_from_call(); /* from connectx call? */
637 #endif
638
639 #if defined(__FreeBSD__) && __FreeBSD_version > 602000
640 error = priv_check(req->td, PRIV_NETINET_GETCRED);
641 #elif defined(__FreeBSD__) && __FreeBSD_version >= 500000
642 error = suser(req->td);
643 #else
644 error = suser(req->p);
645 #endif
646 if (error)
647 return (error);
648
649 if (req->newlen != sizeof(addrs)) {
650 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
651 return (EINVAL);
652 }
653 if (req->oldlen != sizeof(struct ucred)) {
654 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
655 return (EINVAL);
656 }
657 error = SYSCTL_IN(req, addrs, sizeof(addrs));
658 if (error)
659 return (error);
660
661 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]),
662 sin6tosa(&addrs[0]),
663 &inp, &net, 1, vrf_id);
664 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
665 if ((inp != NULL) && (stcb == NULL)) {
666 /* reduce ref-count */
667 SCTP_INP_WLOCK(inp);
668 SCTP_INP_DECR_REF(inp);
669 goto cred_can_cont;
670 }
671 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
672 error = ENOENT;
673 goto out;
674 }
675 SCTP_TCB_UNLOCK(stcb);
676 /* We use the write lock here, only
677 * since in the error leg we need it.
678 * If we used RLOCK, then we would have
679 * to wlock/decr/unlock/rlock. Which
680 * in theory could create a hole. Better
681 * to use higher wlock.
682 */
683 SCTP_INP_WLOCK(inp);
684 cred_can_cont:
685 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
686 if (error) {
687 SCTP_INP_WUNLOCK(inp);
688 goto out;
689 }
690 cru2x(inp->sctp_socket->so_cred, &xuc);
691 SCTP_INP_WUNLOCK(inp);
692 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
693 out:
694 return (error);
695 }
696
697 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
698 0, 0,
699 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection");
700
701 #endif
702
703 /* This is the same as the sctp_abort() could be made common */
704 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__)
705 static void
706 #elif defined(__Panda__) || defined(__Userspace__)
707 int
708 #else
709 static int
710 #endif
711 sctp6_abort(struct socket *so)
712 {
713 #if defined(__FreeBSD__)
714 struct epoch_tracker et;
715 #endif
716 struct sctp_inpcb *inp;
717 uint32_t flags;
718
719 inp = (struct sctp_inpcb *)so->so_pcb;
720 if (inp == NULL) {
721 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
722 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__)
723 return;
724 #else
725 return (EINVAL);
726 #endif
727 }
728 #if defined(__FreeBSD__)
729 NET_EPOCH_ENTER(et);
730 #endif
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 NET_EPOCH_EXIT(et);
764 return;
765 #else
766 return (0);
767 #endif
768 }
769
770 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
771 static int
772 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED)
773 #elif defined(__Panda__) || defined(__Userspace__)
774 int
775 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, uint32_t vrf_id)
776 #elif defined(__Windows__)
777 static int
778 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, PKTHREAD p SCTP_UNUSED)
779 #else
780 static int
781 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct proc *p SCTP_UNUSED)
782 #endif
783 {
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
808 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
809 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
810 #else
811 inp->inp_vflag |= INP_IPV6;
812 #endif
813 #if !defined(__Panda__)
814 inp->ip_inp.inp.in6p_hops = -1; /* use kernel default */
815 inp->ip_inp.inp.in6p_cksum = -1; /* just to be sure */
816 #endif
817 #ifdef INET
818 /*
819 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6
820 * socket as well, because the socket may be bound to an IPv6
821 * wildcard address, which may match an IPv4-mapped IPv6 address.
822 */
823 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
824 #endif
825 SCTP_INP_WUNLOCK(inp);
826 return (0);
827 }
828
829 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
830 static int
831 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
832 {
833 #elif defined(__FreeBSD__) || defined(__APPLE__)
834 static int
835 sctp6_bind(struct socket *so, struct sockaddr *addr, struct proc *p)
836 {
837 #elif defined(__Panda__) || defined(__Userspace__)
838 int
839 sctp6_bind(struct socket *so, struct sockaddr *addr, void * p)
840 {
841 #elif defined(__Windows__)
842 static int
843 sctp6_bind(struct socket *so, struct sockaddr *addr, PKTHREAD p)
844 {
845 #else
846 static int
847 sctp6_bind(struct socket *so, struct mbuf *nam, struct proc *p)
848 {
849 struct sockaddr *addr = nam ? mtod(nam, struct sockaddr *): NULL;
850
851 #endif
852 struct sctp_inpcb *inp;
853 int error;
854 u_char vflagsav;
855
856 inp = (struct sctp_inpcb *)so->so_pcb;
857 if (inp == NULL) {
858 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
859 return (EINVAL);
860 }
861
862 #if !defined(__Windows__)
863 if (addr) {
864 switch (addr->sa_family) {
865 #ifdef INET
866 case AF_INET:
867 #ifdef HAVE_SA_LEN
868 if (addr->sa_len != sizeof(struct sockaddr_in)) {
869 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
870 return (EINVAL);
871 }
872 #endif
873 break;
874 #endif
875 #ifdef INET6
876 case AF_INET6:
877 #ifdef HAVE_SA_LEN
878 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
879 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
880 return (EINVAL);
881 }
882 #endif
883 break;
884 #endif
885 default:
886 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
887 return (EINVAL);
888 }
889 }
890 #endif
891 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
892 vflagsav = inp->ip_inp.inp.inp_vflag;
893 inp->ip_inp.inp.inp_vflag &= ~INP_IPV4;
894 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
895 #else
896 vflagsav = inp->inp_vflag;
897 inp->inp_vflag &= ~INP_IPV4;
898 inp->inp_vflag |= INP_IPV6;
899 #endif
900 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp) == 0)) {
901 switch (addr->sa_family) {
902 #ifdef INET
903 case AF_INET:
904 /* binding v4 addr to v6 socket, so reset flags */
905 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
906 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
907 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6;
908 #else
909 inp->inp_vflag |= INP_IPV4;
910 inp->inp_vflag &= ~INP_IPV6;
911 #endif
912 break;
913 #endif
914 #ifdef INET6
915 case AF_INET6:
916 {
917 struct sockaddr_in6 *sin6_p;
918
919 sin6_p = (struct sockaddr_in6 *)addr;
920
921 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) {
922 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
923 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
924 #else
925 inp->inp_vflag |= INP_IPV4;
926 #endif
927 }
928 #ifdef INET
929 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
930 struct sockaddr_in sin;
931
932 in6_sin6_2_sin(&sin, sin6_p);
933 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
934 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
935 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6;
936 #else
937 inp->inp_vflag |= INP_IPV4;
938 inp->inp_vflag &= ~INP_IPV6;
939 #endif
940 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p);
941 goto out;
942 }
943 #endif
944 break;
945 }
946 #endif
947 default:
948 break;
949 }
950 } else if (addr != NULL) {
951 struct sockaddr_in6 *sin6_p;
952
953 /* IPV6_V6ONLY socket */
954 #ifdef INET
955 if (addr->sa_family == AF_INET) {
956 /* can't bind v4 addr to v6 only socket! */
957 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
958 error = EINVAL;
959 goto out;
960 }
961 #endif
962 sin6_p = (struct sockaddr_in6 *)addr;
963
964 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
965 /* can't bind v4-mapped addrs either! */
966 /* NOTE: we don't support SIIT */
967 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
968 error = EINVAL;
969 goto out;
970 }
971 }
972 error = sctp_inpcb_bind(so, addr, NULL, p);
973 out:
974 if (error != 0)
975 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
976 inp->ip_inp.inp.inp_vflag = vflagsav;
977 #else
978 inp->inp_vflag = vflagsav;
979 #endif
980 return (error);
981 }
982
983
984 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__) || defined(__Userspace__)
985 #if !defined(__Userspace__)
986 static void
987 #else
988 void
989 #endif
990 sctp6_close(struct socket *so)
991 {
992 sctp_close(so);
993 }
994
995 /* This could be made common with sctp_detach() since they are identical */
996 #else
997
998 #if !defined(__Panda__)
999 static
1000 #endif
1001 int
1002 sctp6_detach(struct socket *so)
1003 {
1004 #if defined(__Userspace__)
1005 sctp_close(so);
1006 return (0);
1007 #else
1008 return (sctp_detach(so));
1009 #endif
1010 }
1011
1012 #endif
1013
1014 #if !defined(__Panda__) && !defined(__Userspace__)
1015 static
1016 #endif
1017 int
1018 sctp6_disconnect(struct socket *so)
1019 {
1020 return (sctp_disconnect(so));
1021 }
1022
1023
1024 int
1025 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
1026 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
1027 struct mbuf *control, struct thread *p);
1028
1029 #else
1030 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
1031 struct mbuf *control, struct proc *p);
1032
1033 #endif
1034
1035 #if !defined(__Panda__) && !defined(__Windows__) && !defined(__Userspace__)
1036 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
1037 static int
1038 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
1039 struct mbuf *control, struct thread *p)
1040 {
1041 #elif defined(__FreeBSD__) || defined(__APPLE__)
1042 static int
1043 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
1044 struct mbuf *control, struct proc *p)
1045 {
1046 #else
1047 static int
1048 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct mbuf *nam,
1049 struct mbuf *control, struct proc *p)
1050 {
1051 struct sockaddr *addr = nam ? mtod(nam, struct sockaddr *): NULL;
1052 #endif
1053 struct sctp_inpcb *inp;
1054
1055 #ifdef INET
1056 struct sockaddr_in6 *sin6;
1057 #endif /* INET */
1058 /* No SPL needed since sctp_output does this */
1059
1060 inp = (struct sctp_inpcb *)so->so_pcb;
1061 if (inp == NULL) {
1062 if (control) {
1063 SCTP_RELEASE_PKT(control);
1064 control = NULL;
1065 }
1066 SCTP_RELEASE_PKT(m);
1067 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1068 return (EINVAL);
1069 }
1070 /*
1071 * For the TCP model we may get a NULL addr, if we are a connected
1072 * socket thats ok.
1073 */
1074 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) &&
1075 (addr == NULL)) {
1076 goto connected_type;
1077 }
1078 if (addr == NULL) {
1079 SCTP_RELEASE_PKT(m);
1080 if (control) {
1081 SCTP_RELEASE_PKT(control);
1082 control = NULL;
1083 }
1084 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ);
1085 return (EDESTADDRREQ);
1086 }
1087 #ifdef INET
1088 sin6 = (struct sockaddr_in6 *)addr;
1089 if (SCTP_IPV6_V6ONLY(inp)) {
1090 /*
1091 * if IPV6_V6ONLY flag, we discard datagrams destined to a
1092 * v4 addr or v4-mapped addr
1093 */
1094 if (addr->sa_family == AF_INET) {
1095 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1096 return (EINVAL);
1097 }
1098 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
1099 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1100 return (EINVAL);
1101 }
1102 }
1103 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
1104 struct sockaddr_in sin;
1105
1106 /* convert v4-mapped into v4 addr and send */
1107 in6_sin6_2_sin(&sin, sin6);
1108 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p));
1109 }
1110 #endif /* INET */
1111 connected_type:
1112 /* now what about control */
1113 if (control) {
1114 if (inp->control) {
1115 SCTP_PRINTF("huh? control set?\n");
1116 SCTP_RELEASE_PKT(inp->control);
1117 inp->control = NULL;
1118 }
1119 inp->control = control;
1120 }
1121 /* Place the data */
1122 if (inp->pkt) {
1123 SCTP_BUF_NEXT(inp->pkt_last) = m;
1124 inp->pkt_last = m;
1125 } else {
1126 inp->pkt_last = inp->pkt = m;
1127 }
1128 if (
1129 #if defined(__FreeBSD__) || defined(__APPLE__)
1130 /* FreeBSD and MacOSX uses a flag passed */
1131 ((flags & PRUS_MORETOCOME) == 0)
1132 #else
1133 1 /* Open BSD does not have any "more to come"
1134 * indication */
1135 #endif
1136 ) {
1137 /*
1138 * note with the current version this code will only be used
1139 * by OpenBSD, NetBSD and FreeBSD have methods for
1140 * re-defining sosend() to use sctp_sosend(). One can
1141 * optionaly switch back to this code (by changing back the
1142 * defininitions but this is not advisable.
1143 */
1144 #if defined(__FreeBSD__)
1145 struct epoch_tracker et;
1146 #endif
1147 int ret;
1148
1149 #if defined(__FreeBSD__)
1150 NET_EPOCH_ENTER(et);
1151 #endif
1152 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
1153 #if defined(__FreeBSD__)
1154 NET_EPOCH_EXIT(et);
1155 #endif
1156 inp->pkt = NULL;
1157 inp->control = NULL;
1158 return (ret);
1159 } else {
1160 return (0);
1161 }
1162 }
1163 #endif
1164
1165 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
1166 static int
1167 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
1168 {
1169 #elif defined(__FreeBSD__) || defined(__APPLE__)
1170 static int
1171 sctp6_connect(struct socket *so, struct sockaddr *addr, struct proc *p)
1172 {
1173 #elif defined(__Panda__)
1174 int
1175 sctp6_connect(struct socket *so, struct sockaddr *addr, void *p)
1176 {
1177 #elif defined(__Windows__)
1178 static int
1179 sctp6_connect(struct socket *so, struct sockaddr *addr, PKTHREAD p)
1180 {
1181 #elif defined(__Userspace__)
1182 int
1183 sctp6_connect(struct socket *so, struct sockaddr *addr)
1184 {
1185 void *p = NULL;
1186 #else
1187 static int
1188 sctp6_connect(struct socket *so, struct mbuf *nam, struct proc *p)
1189 {
1190 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1191 #endif
1192 #if defined(__FreeBSD__)
1193 struct epoch_tracker et;
1194 #endif
1195 uint32_t vrf_id;
1196 int error = 0;
1197 struct sctp_inpcb *inp;
1198 struct sctp_tcb *stcb;
1199 #ifdef INET
1200 struct sockaddr_in6 *sin6;
1201 union sctp_sockstore store;
1202 #endif
1203
1204 inp = (struct sctp_inpcb *)so->so_pcb;
1205 if (inp == NULL) {
1206 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
1207 return (ECONNRESET); /* I made the same as TCP since we are
1208 * not setup? */
1209 }
1210 if (addr == NULL) {
1211 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1212 return (EINVAL);
1213 }
1214 #if !defined(__Windows__)
1215 switch (addr->sa_family) {
1216 #ifdef INET
1217 case AF_INET:
1218 #ifdef HAVE_SA_LEN
1219 if (addr->sa_len != sizeof(struct sockaddr_in)) {
1220 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1221 return (EINVAL);
1222 }
1223 #endif
1224 break;
1225 #endif
1226 #ifdef INET6
1227 case AF_INET6:
1228 #ifdef HAVE_SA_LEN
1229 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
1230 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1231 return (EINVAL);
1232 }
1233 #endif
1234 break;
1235 #endif
1236 default:
1237 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1238 return (EINVAL);
1239 }
1240 #endif
1241
1242 vrf_id = inp->def_vrf_id;
1243 SCTP_ASOC_CREATE_LOCK(inp);
1244 SCTP_INP_RLOCK(inp);
1245 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
1246 SCTP_PCB_FLAGS_UNBOUND) {
1247 /* Bind a ephemeral port */
1248 SCTP_INP_RUNLOCK(inp);
1249 error = sctp6_bind(so, NULL, p);
1250 if (error) {
1251 SCTP_ASOC_CREATE_UNLOCK(inp);
1252
1253 return (error);
1254 }
1255 SCTP_INP_RLOCK(inp);
1256 }
1257 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
1258 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
1259 /* We are already connected AND the TCP model */
1260 SCTP_INP_RUNLOCK(inp);
1261 SCTP_ASOC_CREATE_UNLOCK(inp);
1262 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE);
1263 return (EADDRINUSE);
1264 }
1265 #ifdef INET
1266 sin6 = (struct sockaddr_in6 *)addr;
1267 if (SCTP_IPV6_V6ONLY(inp)) {
1268 /*
1269 * if IPV6_V6ONLY flag, ignore connections destined to a v4
1270 * addr or v4-mapped addr
1271 */
1272 if (addr->sa_family == AF_INET) {
1273 SCTP_INP_RUNLOCK(inp);
1274 SCTP_ASOC_CREATE_UNLOCK(inp);
1275 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1276 return (EINVAL);
1277 }
1278 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
1279 SCTP_INP_RUNLOCK(inp);
1280 SCTP_ASOC_CREATE_UNLOCK(inp);
1281 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1282 return (EINVAL);
1283 }
1284 }
1285 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
1286 /* convert v4-mapped into v4 addr */
1287 in6_sin6_2_sin(&store.sin, sin6);
1288 addr = &store.sa;
1289 }
1290 #endif /* INET */
1291 /* Now do we connect? */
1292 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1293 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1294 if (stcb) {
1295 SCTP_TCB_LOCK(stcb);
1296 }
1297 SCTP_INP_RUNLOCK(inp);
1298 } else {
1299 SCTP_INP_RUNLOCK(inp);
1300 SCTP_INP_WLOCK(inp);
1301 SCTP_INP_INCR_REF(inp);
1302 SCTP_INP_WUNLOCK(inp);
1303 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
1304 if (stcb == NULL) {
1305 SCTP_INP_WLOCK(inp);
1306 SCTP_INP_DECR_REF(inp);
1307 SCTP_INP_WUNLOCK(inp);
1308 }
1309 }
1310
1311 if (stcb != NULL) {
1312 /* Already have or am bring up an association */
1313 SCTP_ASOC_CREATE_UNLOCK(inp);
1314 SCTP_TCB_UNLOCK(stcb);
1315 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY);
1316 return (EALREADY);
1317 }
1318 /* We are GOOD to go */
1319 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id,
1320 inp->sctp_ep.pre_open_stream_count,
1321 inp->sctp_ep.port, p,
1322 SCTP_INITIALIZE_AUTH_PARAMS);
1323 SCTP_ASOC_CREATE_UNLOCK(inp);
1324 if (stcb == NULL) {
1325 /* Gak! no memory */
1326 return (error);
1327 }
1328 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1329 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1330 /* Set the connected flag so we can queue data */
1331 soisconnecting(so);
1332 }
1333 SCTP_SET_STATE(stcb, SCTP_STATE_COOKIE_WAIT);
1334 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1335 #if defined(__FreeBSD__)
1336 NET_EPOCH_ENTER(et);
1337 #endif
1338 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
1339 SCTP_TCB_UNLOCK(stcb);
1340 #if defined(__FreeBSD__)
1341 NET_EPOCH_EXIT(et);
1342 #endif
1343 return (error);
1344 }
1345
1346 static int
1347 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1348 sctp6_getaddr(struct socket *so, struct sockaddr **addr)
1349 {
1350 struct sockaddr_in6 *sin6;
1351 #elif defined(__Panda__)
1352 sctp6_getaddr(struct socket *so, struct sockaddr *addr)
1353 {
1354 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
1355 #else
1356 sctp6_getaddr(struct socket *so, struct mbuf *nam)
1357 {
1358 struct sockaddr_in6 *sin6 = mtod(nam, struct sockaddr_in6 *);
1359 #endif
1360 struct sctp_inpcb *inp;
1361 uint32_t vrf_id;
1362 struct sctp_ifa *sctp_ifa;
1363
1364 #if defined(SCTP_KAME) && defined(SCTP_EMBEDDED_V6_SCOPE)
1365 int error;
1366 #endif
1367
1368 /*
1369 * Do the malloc first in case it blocks.
1370 */
1371 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1372 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6));
1373 if (sin6 == NULL)
1374 return (ENOMEM);
1375 #elif defined(__Panda__)
1376 memset(sin6, 0, sizeof(*sin6));
1377 #else
1378 SCTP_BUF_LEN(nam) = sizeof(*sin6);
1379 memset(sin6, 0, sizeof(*sin6));
1380 #endif
1381 sin6->sin6_family = AF_INET6;
1382 #ifdef HAVE_SIN6_LEN
1383 sin6->sin6_len = sizeof(*sin6);
1384 #endif
1385
1386 inp = (struct sctp_inpcb *)so->so_pcb;
1387 if (inp == NULL) {
1388 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1389 SCTP_FREE_SONAME(sin6);
1390 #endif
1391 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
1392 return (ECONNRESET);
1393 }
1394 SCTP_INP_RLOCK(inp);
1395 sin6->sin6_port = inp->sctp_lport;
1396 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1397 /* For the bound all case you get back 0 */
1398 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1399 struct sctp_tcb *stcb;
1400 struct sockaddr_in6 *sin_a6;
1401 struct sctp_nets *net;
1402 int fnd;
1403 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1404 if (stcb == NULL) {
1405 SCTP_INP_RUNLOCK(inp);
1406 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1407 SCTP_FREE_SONAME(sin6);
1408 #endif
1409 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1410 return (ENOENT);
1411 }
1412 fnd = 0;
1413 sin_a6 = NULL;
1414 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1415 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1416 if (sin_a6 == NULL)
1417 /* this will make coverity happy */
1418 continue;
1419
1420 if (sin_a6->sin6_family == AF_INET6) {
1421 fnd = 1;
1422 break;
1423 }
1424 }
1425 if ((!fnd) || (sin_a6 == NULL)) {
1426 /* punt */
1427 SCTP_INP_RUNLOCK(inp);
1428 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1429 SCTP_FREE_SONAME(sin6);
1430 #endif
1431 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1432 return (ENOENT);
1433 }
1434 vrf_id = inp->def_vrf_id;
1435 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id);
1436 if (sctp_ifa) {
1437 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr;
1438 }
1439 } else {
1440 /* For the bound all case you get back 0 */
1441 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr));
1442 }
1443 } else {
1444 /* Take the first IPv6 address in the list */
1445 struct sctp_laddr *laddr;
1446 int fnd = 0;
1447
1448 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1449 if (laddr->ifa->address.sa.sa_family == AF_INET6) {
1450 struct sockaddr_in6 *sin_a;
1451
1452 sin_a = &laddr->ifa->address.sin6;
1453 sin6->sin6_addr = sin_a->sin6_addr;
1454 fnd = 1;
1455 break;
1456 }
1457 }
1458 if (!fnd) {
1459 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1460 SCTP_FREE_SONAME(sin6);
1461 #endif
1462 SCTP_INP_RUNLOCK(inp);
1463 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1464 return (ENOENT);
1465 }
1466 }
1467 SCTP_INP_RUNLOCK(inp);
1468 /* Scoping things for v6 */
1469 #ifdef SCTP_EMBEDDED_V6_SCOPE
1470 #ifdef SCTP_KAME
1471 if ((error = sa6_recoverscope(sin6)) != 0) {
1472 SCTP_FREE_SONAME(sin6);
1473 return (error);
1474 }
1475 #else
1476 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
1477 /* skip ifp check below */
1478 in6_recoverscope(sin6, &sin6->sin6_addr, NULL);
1479 else
1480 sin6->sin6_scope_id = 0; /* XXX */
1481 #endif /* SCTP_KAME */
1482 #endif /* SCTP_EMBEDDED_V6_SCOPE */
1483 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1484 (*addr) = (struct sockaddr *)sin6;
1485 #endif
1486 return (0);
1487 }
1488
1489 static int
1490 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1491 sctp6_peeraddr(struct socket *so, struct sockaddr **addr)
1492 {
1493 struct sockaddr_in6 *sin6;
1494 #elif defined(__Panda__)
1495 sctp6_peeraddr(struct socket *so, struct sockaddr *addr)
1496 {
1497 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
1498 #else
1499 sctp6_peeraddr(struct socket *so, struct mbuf *nam)
1500 {
1501 struct sockaddr_in6 *sin6 = mtod(nam, struct sockaddr_in6 *);
1502 #endif
1503 int fnd;
1504 struct sockaddr_in6 *sin_a6;
1505 struct sctp_inpcb *inp;
1506 struct sctp_tcb *stcb;
1507 struct sctp_nets *net;
1508 #ifdef SCTP_KAME
1509 int error;
1510 #endif
1511
1512 /* Do the malloc first in case it blocks. */
1513 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1514 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1515 if (sin6 == NULL)
1516 return (ENOMEM);
1517 #elif defined(__Panda__)
1518 memset(sin6, 0, sizeof(*sin6));
1519 #else
1520 SCTP_BUF_LEN(nam) = sizeof(*sin6);
1521 memset(sin6, 0, sizeof(*sin6));
1522 #endif
1523 sin6->sin6_family = AF_INET6;
1524 #ifdef HAVE_SIN6_LEN
1525 sin6->sin6_len = sizeof(*sin6);
1526 #endif
1527
1528 inp = (struct sctp_inpcb *)so->so_pcb;
1529 if ((inp == NULL) ||
1530 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
1531 /* UDP type and listeners will drop out here */
1532 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1533 SCTP_FREE_SONAME(sin6);
1534 #endif
1535 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN);
1536 return (ENOTCONN);
1537 }
1538 SCTP_INP_RLOCK(inp);
1539 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1540 if (stcb) {
1541 SCTP_TCB_LOCK(stcb);
1542 }
1543 SCTP_INP_RUNLOCK(inp);
1544 if (stcb == NULL) {
1545 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1546 SCTP_FREE_SONAME(sin6);
1547 #endif
1548 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
1549 return (ECONNRESET);
1550 }
1551 fnd = 0;
1552 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1553 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1554 if (sin_a6->sin6_family == AF_INET6) {
1555 fnd = 1;
1556 sin6->sin6_port = stcb->rport;
1557 sin6->sin6_addr = sin_a6->sin6_addr;
1558 break;
1559 }
1560 }
1561 SCTP_TCB_UNLOCK(stcb);
1562 if (!fnd) {
1563 /* No IPv4 address */
1564 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1565 SCTP_FREE_SONAME(sin6);
1566 #endif
1567 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1568 return (ENOENT);
1569 }
1570 #ifdef SCTP_EMBEDDED_V6_SCOPE
1571 #ifdef SCTP_KAME
1572 if ((error = sa6_recoverscope(sin6)) != 0) {
1573 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1574 SCTP_FREE_SONAME(sin6);
1575 #endif
1576 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error);
1577 return (error);
1578 }
1579 #else
1580 in6_recoverscope(sin6, &sin6->sin6_addr, NULL);
1581 #endif /* SCTP_KAME */
1582 #endif /* SCTP_EMBEDDED_V6_SCOPE */
1583 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1584 *addr = (struct sockaddr *)sin6;
1585 #endif
1586 return (0);
1587 }
1588
1589 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1590 static int
1591 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam)
1592 {
1593 #elif defined(__Panda__)
1594 int
1595 sctp6_in6getaddr(struct socket *so, struct sockaddr *nam, uint32_t *namelen)
1596 {
1597 #ifdef INET
1598 struct sockaddr *addr = nam;
1599 #endif
1600 #elif defined(__Userspace__)
1601 int
1602 sctp6_in6getaddr(struct socket *so, struct mbuf *nam)
1603 {
1604 #ifdef INET
1605 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1606 #endif
1607 #else
1608 static int
1609 sctp6_in6getaddr(struct socket *so, struct mbuf *nam)
1610 {
1611 #ifdef INET
1612 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1613 #endif
1614 #endif
1615 struct inpcb *inp = sotoinpcb(so);
1616 int error;
1617
1618 if (inp == NULL) {
1619 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1620 return (EINVAL);
1621 }
1622
1623 /* allow v6 addresses precedence */
1624 error = sctp6_getaddr(so, nam);
1625 #ifdef INET
1626 if (error) {
1627 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1628 struct sockaddr_in6 *sin6;
1629 #else
1630 struct sockaddr_in6 sin6;
1631 #endif
1632
1633 /* try v4 next if v6 failed */
1634 error = sctp_ingetaddr(so, nam);
1635 if (error) {
1636 return (error);
1637 }
1638 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1639 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1640 if (sin6 == NULL) {
1641 SCTP_FREE_SONAME(*nam);
1642 return (ENOMEM);
1643 }
1644 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6);
1645 SCTP_FREE_SONAME(*nam);
1646 *nam = (struct sockaddr *)sin6;
1647 #else
1648 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
1649 SCTP_BUF_LEN(nam) = sizeof(struct sockaddr_in6);
1650 memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
1651 #endif
1652 }
1653 #endif
1654 #if defined(__Panda__)
1655 *namelen = nam->sa_len;
1656 #endif
1657 return (error);
1658 }
1659
1660
1661 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1662 static int
1663 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam)
1664 {
1665 #elif defined(__Panda__)
1666 int
1667 sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam, uint32_t *namelen)
1668 {
1669 #ifdef INET
1670 struct sockaddr *addr = (struct sockaddr *)nam;
1671 #endif
1672 #elif defined(__Userspace__)
1673 int
1674 sctp6_getpeeraddr(struct socket *so, struct mbuf *nam)
1675 {
1676 #ifdef INET
1677 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1678 #endif
1679 #else
1680 static
1681 int
1682 sctp6_getpeeraddr(struct socket *so, struct mbuf *nam)
1683 {
1684 #ifdef INET
1685 struct sockaddr *addr = mtod(nam, struct sockaddr *);
1686 #endif
1687
1688 #endif
1689 struct inpcb *inp = sotoinpcb(so);
1690 int error;
1691
1692 if (inp == NULL) {
1693 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1694 return (EINVAL);
1695 }
1696
1697 /* allow v6 addresses precedence */
1698 error = sctp6_peeraddr(so, nam);
1699 #ifdef INET
1700 if (error) {
1701 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1702 struct sockaddr_in6 *sin6;
1703 #else
1704 struct sockaddr_in6 sin6;
1705 #endif
1706
1707 /* try v4 next if v6 failed */
1708 error = sctp_peeraddr(so, nam);
1709 if (error) {
1710 return (error);
1711 }
1712 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1713 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1714 if (sin6 == NULL) {
1715 SCTP_FREE_SONAME(*nam);
1716 return (ENOMEM);
1717 }
1718 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6);
1719 SCTP_FREE_SONAME(*nam);
1720 *nam = (struct sockaddr *)sin6;
1721 #else
1722 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
1723 SCTP_BUF_LEN(nam) = sizeof(struct sockaddr_in6);
1724 memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
1725 #endif
1726 }
1727 #endif
1728 #if defined(__Panda__)
1729 *namelen = nam->sa_len;
1730 #endif
1731 return (error);
1732 }
1733
1734 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
1735 struct pr_usrreqs sctp6_usrreqs = {
1736 #if defined(__FreeBSD__)
1737 .pru_abort = sctp6_abort,
1738 .pru_accept = sctp_accept,
1739 .pru_attach = sctp6_attach,
1740 .pru_bind = sctp6_bind,
1741 .pru_connect = sctp6_connect,
1742 .pru_control = in6_control,
1743 #if __FreeBSD_version >= 690000
1744 .pru_close = sctp6_close,
1745 .pru_detach = sctp6_close,
1746 .pru_sopoll = sopoll_generic,
1747 .pru_flush = sctp_flush,
1748 #else
1749 .pru_detach = sctp6_detach,
1750 .pru_sopoll = sopoll,
1751 #endif
1752 .pru_disconnect = sctp6_disconnect,
1753 .pru_listen = sctp_listen,
1754 .pru_peeraddr = sctp6_getpeeraddr,
1755 .pru_send = sctp6_send,
1756 .pru_shutdown = sctp_shutdown,
1757 .pru_sockaddr = sctp6_in6getaddr,
1758 .pru_sosend = sctp_sosend,
1759 .pru_soreceive = sctp_soreceive
1760 #elif defined(__APPLE__)
1761 .pru_abort = sctp6_abort,
1762 .pru_accept = sctp_accept,
1763 .pru_attach = sctp6_attach,
1764 .pru_bind = sctp6_bind,
1765 .pru_connect = sctp6_connect,
1766 .pru_connect2 = pru_connect2_notsupp,
1767 .pru_control = in6_control,
1768 .pru_detach = sctp6_detach,
1769 .pru_disconnect = sctp6_disconnect,
1770 .pru_listen = sctp_listen,
1771 .pru_peeraddr = sctp6_getpeeraddr,
1772 .pru_rcvd = NULL,
1773 .pru_rcvoob = pru_rcvoob_notsupp,
1774 .pru_send = sctp6_send,
1775 .pru_sense = pru_sense_null,
1776 .pru_shutdown = sctp_shutdown,
1777 .pru_sockaddr = sctp6_in6getaddr,
1778 .pru_sosend = sctp_sosend,
1779 .pru_soreceive = sctp_soreceive,
1780 .pru_sopoll = sopoll
1781 #elif defined(__Windows__)
1782 sctp6_abort,
1783 sctp_accept,
1784 sctp6_attach,
1785 sctp6_bind,
1786 sctp6_connect,
1787 pru_connect2_notsupp,
1788 NULL,
1789 NULL,
1790 sctp6_disconnect,
1791 sctp_listen,
1792 sctp6_getpeeraddr,
1793 NULL,
1794 pru_rcvoob_notsupp,
1795 NULL,
1796 pru_sense_null,
1797 sctp_shutdown,
1798 sctp_flush,
1799 sctp6_in6getaddr,
1800 sctp_sosend,
1801 sctp_soreceive,
1802 sopoll_generic,
1803 NULL,
1804 sctp6_close
1805 #endif
1806 };
1807
1808 #elif !defined(__Panda__) && !defined(__Userspace__)
1809 int
1810 sctp6_usrreq(so, req, m, nam, control, p)
1811 struct socket *so;
1812 int req;
1813 struct mbuf *m, *nam, *control;
1814 struct proc *p;
1815 {
1816 int error;
1817 int family;
1818
1819 family = so->so_proto->pr_domain->dom_family;
1820
1821 if (req == PRU_CONTROL) {
1822 switch (family) {
1823 case PF_INET:
1824 error = in_control(so, (long)m, (caddr_t)nam,
1825 (struct ifnet *)control );
1826 break;
1827 #ifdef INET6
1828 case PF_INET6:
1829 error = in6_control(so, (long)m, (caddr_t)nam,
1830 (struct ifnet *)control, p);
1831 break;
1832 #endif
1833 default:
1834 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT);
1835 error = EAFNOSUPPORT;
1836 }
1837 return (error);
1838 }
1839 switch (req) {
1840 case PRU_ATTACH:
1841 error = sctp6_attach(so, family, p);
1842 break;
1843 case PRU_DETACH:
1844 error = sctp6_detach(so);
1845 break;
1846 case PRU_BIND:
1847 if (nam == NULL) {
1848 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1849 return (EINVAL);
1850 }
1851 error = sctp6_bind(so, nam, p);
1852 break;
1853 case PRU_LISTEN:
1854 error = sctp_listen(so, p);
1855 break;
1856 case PRU_CONNECT:
1857 if (nam == NULL) {
1858 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1859 return (EINVAL);
1860 }
1861 error = sctp6_connect(so, nam, p);
1862 break;
1863 case PRU_DISCONNECT:
1864 error = sctp6_disconnect(so);
1865 break;
1866 case PRU_ACCEPT:
1867 if (nam == NULL) {
1868 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1869 return (EINVAL);
1870 }
1871 error = sctp_accept(so, nam);
1872 break;
1873 case PRU_SHUTDOWN:
1874 error = sctp_shutdown(so);
1875 break;
1876
1877 case PRU_RCVD:
1878 /*
1879 * For OpenBSD and NetBSD, this is real ugly. The (mbuf *)
1880 * nam that is passed (by soreceive()) is the int flags cast
1881 * as a (mbuf *) yuck!
1882 */
1883 error = sctp_usr_recvd(so, (int)((long)nam));
1884 break;
1885
1886 case PRU_SEND:
1887 /* Flags are ignored */
1888 error = sctp6_send(so, 0, m, nam, control, p);
1889 break;
1890 case PRU_ABORT:
1891 error = sctp6_abort(so);
1892 break;
1893
1894 case PRU_SENSE:
1895 error = 0;
1896 break;
1897 case PRU_RCVOOB:
1898 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT);
1899 error = EAFNOSUPPORT;
1900 break;
1901 case PRU_SENDOOB:
1902 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT);
1903 error = EAFNOSUPPORT;
1904 break;
1905 case PRU_PEERADDR:
1906 error = sctp6_getpeeraddr(so, nam);
1907 break;
1908 case PRU_SOCKADDR:
1909 error = sctp6_in6getaddr(so, nam);
1910 break;
1911 case PRU_SLOWTIMO:
1912 error = 0;
1913 break;
1914 default:
1915 error = 0;
1916 break;
1917 }
1918 return (error);
1919 }
1920 #endif
1921 #endif
1922