1 /* $FreeBSD: src/sys/netinet6/udp6_usrreq.c,v 1.6.2.13 2003/01/24 05:11:35 sam Exp $ */
2 /* $KAME: udp6_usrreq.c,v 1.27 2001/05/21 05:45:10 jinmei Exp $ */
3
4 /*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 /*
34 * Copyright (c) 1982, 1986, 1989, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
62 */
63
64 #include "opt_inet.h"
65 #include "opt_inet6.h"
66
67 #include <sys/param.h>
68 #include <sys/kernel.h>
69 #include <sys/malloc.h>
70 #include <sys/mbuf.h>
71 #include <sys/protosw.h>
72 #include <sys/socket.h>
73 #include <sys/socketvar.h>
74 #include <sys/sysctl.h>
75 #include <sys/errno.h>
76 #include <sys/stat.h>
77 #include <sys/systm.h>
78 #include <sys/syslog.h>
79 #include <sys/proc.h>
80 #include <sys/caps.h>
81 #include <sys/jail.h>
82
83 #include <sys/thread2.h>
84 #include <sys/socketvar2.h>
85 #include <sys/msgport2.h>
86
87 #include <net/if.h>
88 #include <net/route.h>
89 #include <net/if_types.h>
90 #include <net/netisr2.h>
91
92 #include <netinet/in.h>
93 #include <netinet/in_systm.h>
94 #include <netinet/ip.h>
95 #include <netinet/in_pcb.h>
96 #include <netinet/in_var.h>
97 #include <netinet/ip_var.h>
98 #include <netinet/udp.h>
99 #include <netinet/udp_var.h>
100 #include <netinet/ip6.h>
101 #include <netinet6/ip6_var.h>
102 #include <netinet6/in6_pcb.h>
103 #include <netinet/icmp6.h>
104 #include <netinet6/udp6_var.h>
105 #include <netinet6/ip6protosw.h>
106
107 /*
108 * UDP protocol inplementation.
109 * Per RFC 768, August, 1980.
110 */
111
112 extern struct protosw inetsw[];
113 static int in6_mcmatch (struct inpcb *, struct in6_addr *, struct ifnet *);
114
115 static int
in6_mcmatch(struct inpcb * in6p,struct in6_addr * ia6,struct ifnet * ifp)116 in6_mcmatch(struct inpcb *in6p, struct in6_addr *ia6, struct ifnet *ifp)
117 {
118 struct ip6_moptions *im6o = in6p->in6p_moptions;
119 struct in6_multi_mship *imm;
120
121 if (im6o == NULL)
122 return 0;
123
124 for (imm = im6o->im6o_memberships.lh_first; imm != NULL;
125 imm = imm->i6mm_chain.le_next) {
126 if ((ifp == NULL ||
127 imm->i6mm_maddr->in6m_ifp == ifp) &&
128 IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr,
129 ia6))
130 return 1;
131 }
132 return 0;
133 }
134
135 int
udp6_input(struct mbuf ** mp,int * offp,int proto)136 udp6_input(struct mbuf **mp, int *offp, int proto)
137 {
138 struct mbuf *m = *mp;
139 struct ip6_hdr *ip6;
140 struct udphdr *uh;
141 struct inpcb *in6p;
142 struct mbuf *opts = NULL;
143 int off = *offp;
144 int plen, ulen;
145 struct sockaddr_in6 udp_in6;
146 struct socket *so;
147 struct inpcbinfo *pcbinfo = &udbinfo[0];
148
149 IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE);
150
151 ip6 = mtod(m, struct ip6_hdr *);
152
153 udp_stat.udps_ipackets++;
154
155 plen = ntohs(ip6->ip6_plen) - off + sizeof(*ip6);
156 uh = (struct udphdr *)((caddr_t)ip6 + off);
157 ulen = ntohs((u_short)uh->uh_ulen);
158
159 if (plen != ulen) {
160 udp_stat.udps_badlen++;
161 goto bad;
162 }
163
164 /*
165 * Checksum extended UDP header and data.
166 */
167 if (uh->uh_sum == 0)
168 udp_stat.udps_nosum++;
169 else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
170 udp_stat.udps_badsum++;
171 goto bad;
172 }
173
174 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
175 struct inpcb *last, *marker;
176
177 /*
178 * Deliver a multicast datagram to all sockets
179 * for which the local and remote addresses and ports match
180 * those of the incoming datagram. This allows more than
181 * one process to receive multicasts on the same port.
182 * (This really ought to be done for unicast datagrams as
183 * well, but that would cause problems with existing
184 * applications that open both address-specific sockets and
185 * a wildcard socket listening to the same port -- they would
186 * end up receiving duplicates of every unicast datagram.
187 * Those applications open the multiple sockets to overcome an
188 * inadequacy of the UDP socket interface, but for backwards
189 * compatibility we avoid the problem here rather than
190 * fixing the interface. Maybe 4.5BSD will remedy this?)
191 */
192
193 /*
194 * In a case that laddr should be set to the link-local
195 * address (this happens in RIPng), the multicast address
196 * specified in the received packet does not match with
197 * laddr. To cure this situation, the matching is relaxed
198 * if the receiving interface is the same as one specified
199 * in the socket and if the destination multicast address
200 * matches one of the multicast groups specified in the socket.
201 */
202
203 /*
204 * Construct sockaddr format source address.
205 */
206 init_sin6(&udp_in6, m); /* general init */
207 udp_in6.sin6_port = uh->uh_sport;
208 /*
209 * KAME note: traditionally we dropped udpiphdr from mbuf here.
210 */
211
212 /*
213 * Locate pcb(s) for datagram.
214 * (Algorithm copied from raw_intr().)
215 */
216 last = NULL;
217
218 marker = in_pcbmarker();
219
220 GET_PCBINFO_TOKEN(pcbinfo);
221
222 LIST_INSERT_HEAD(&pcbinfo->pcblisthead, marker, inp_list);
223 while ((in6p = LIST_NEXT(marker, inp_list)) != NULL) {
224 LIST_REMOVE(marker, inp_list);
225 LIST_INSERT_AFTER(in6p, marker, inp_list);
226
227 if (in6p->inp_flags & INP_PLACEMARKER)
228 continue;
229 if (!INP_ISIPV6(in6p))
230 continue;
231 if (in6p->in6p_lport != uh->uh_dport)
232 continue;
233 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) {
234 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr,
235 &ip6->ip6_dst) &&
236 !in6_mcmatch(in6p, &ip6->ip6_dst,
237 m->m_pkthdr.rcvif))
238 continue;
239 }
240 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
241 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr,
242 &ip6->ip6_src) ||
243 in6p->in6p_fport != uh->uh_sport)
244 continue;
245 }
246
247 if (last != NULL) {
248 struct mbuf *n;
249
250 n = m_copym(m, 0, M_COPYALL, M_NOWAIT);
251 if (n != NULL) {
252 /*
253 * KAME NOTE: do not
254 * m_copym(m, offset, ...) above.
255 * ssb_appendaddr() expects M_PKTHDR,
256 * and m_copym() will copy M_PKTHDR
257 * only if offset is 0.
258 */
259 so = last->in6p_socket;
260 if ((last->in6p_flags & IN6P_CONTROLOPTS) ||
261 (so->so_options & SO_TIMESTAMP)) {
262 ip6_savecontrol(last, &opts,
263 ip6, n);
264 }
265 m_adj(n, off + sizeof(struct udphdr));
266 lwkt_gettoken(&so->so_rcv.ssb_token);
267 if (ssb_appendaddr(&so->so_rcv,
268 (struct sockaddr *)&udp_in6,
269 n, opts) == 0) {
270 m_freem(n);
271 if (opts)
272 m_freem(opts);
273 udp_stat.udps_fullsock++;
274 soroverflow(so);
275 } else {
276 sorwakeup(so);
277 }
278 lwkt_reltoken(&so->so_rcv.ssb_token);
279 opts = NULL;
280 }
281 }
282 last = in6p;
283 /*
284 * Don't look for additional matches if this one does
285 * not have either the SO_REUSEPORT or SO_REUSEADDR
286 * socket options set. This heuristic avoids searching
287 * through all pcbs in the common case of a non-shared
288 * port. It assumes that an application will never
289 * clear these options after setting them.
290 */
291 if ((last->in6p_socket->so_options &
292 (SO_REUSEPORT | SO_REUSEADDR)) == 0)
293 break;
294 }
295 LIST_REMOVE(marker, inp_list);
296
297 REL_PCBINFO_TOKEN(pcbinfo);
298
299 if (last == NULL) {
300 /*
301 * No matching pcb found; discard datagram.
302 * (No need to send an ICMP Port Unreachable
303 * for a broadcast or multicast datgram.)
304 */
305 udp_stat.udps_noport++;
306 udp_stat.udps_noportmcast++;
307 goto bad;
308 }
309 if (last->in6p_flags & IN6P_CONTROLOPTS
310 || last->in6p_socket->so_options & SO_TIMESTAMP)
311 ip6_savecontrol(last, &opts, ip6, m);
312
313 m_adj(m, off + sizeof(struct udphdr));
314 so = last->in6p_socket;
315 lwkt_gettoken(&so->so_rcv.ssb_token);
316 if (ssb_appendaddr(&so->so_rcv, (struct sockaddr *)&udp_in6,
317 m, opts) == 0) {
318 udp_stat.udps_fullsock++;
319 soroverflow(so);
320 lwkt_reltoken(&so->so_rcv.ssb_token);
321 goto bad;
322 }
323 sorwakeup(so);
324 lwkt_reltoken(&so->so_rcv.ssb_token);
325 return IPPROTO_DONE;
326 }
327 /*
328 * Locate pcb for datagram.
329 */
330 in6p = in6_pcblookup_hash(pcbinfo, &ip6->ip6_src, uh->uh_sport,
331 &ip6->ip6_dst, uh->uh_dport, 1,
332 m->m_pkthdr.rcvif);
333 if (in6p == NULL) {
334 if (log_in_vain) {
335 char buf[INET6_ADDRSTRLEN];
336
337 strcpy(buf, ip6_sprintf(&ip6->ip6_dst));
338 log(LOG_INFO,
339 "Connection attempt to UDP [%s]:%d from [%s]:%d\n",
340 buf, ntohs(uh->uh_dport),
341 ip6_sprintf(&ip6->ip6_src), ntohs(uh->uh_sport));
342 }
343 udp_stat.udps_noport++;
344 if (m->m_flags & M_MCAST) {
345 kprintf("UDP6: M_MCAST is set in a unicast packet.\n");
346 udp_stat.udps_noportmcast++;
347 goto bad;
348 }
349 icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0);
350 return IPPROTO_DONE;
351 }
352
353 /*
354 * Construct sockaddr format source address.
355 * Stuff source address and datagram in user buffer.
356 */
357 init_sin6(&udp_in6, m); /* general init */
358 udp_in6.sin6_port = uh->uh_sport;
359 if (in6p->in6p_flags & IN6P_CONTROLOPTS
360 || in6p->in6p_socket->so_options & SO_TIMESTAMP)
361 ip6_savecontrol(in6p, &opts, ip6, m);
362 m_adj(m, off + sizeof(struct udphdr));
363 so = in6p->in6p_socket;
364 lwkt_gettoken(&so->so_rcv.ssb_token);
365 if (ssb_appendaddr(&so->so_rcv, (struct sockaddr *)&udp_in6,
366 m, opts) == 0) {
367 udp_stat.udps_fullsock++;
368 soroverflow(so);
369 lwkt_reltoken(&so->so_rcv.ssb_token);
370 goto bad;
371 }
372 sorwakeup(so);
373 lwkt_reltoken(&so->so_rcv.ssb_token);
374 return IPPROTO_DONE;
375 bad:
376 if (m)
377 m_freem(m);
378 if (opts)
379 m_freem(opts);
380 return IPPROTO_DONE;
381 }
382
383 void
udp6_ctlinput(netmsg_t msg)384 udp6_ctlinput(netmsg_t msg)
385 {
386 int cmd = msg->ctlinput.nm_cmd;
387 struct sockaddr *sa = msg->ctlinput.nm_arg;
388 void *d = msg->ctlinput.nm_extra;
389 struct udphdr uh;
390 struct ip6_hdr *ip6;
391 struct mbuf *m;
392 int off = 0;
393 struct ip6ctlparam *ip6cp = NULL;
394 const struct sockaddr_in6 *sa6_src = NULL;
395 inp_notify_t notify = udp_notify;
396 struct udp_portonly {
397 u_int16_t uh_sport;
398 u_int16_t uh_dport;
399 } *uhp;
400
401 if (sa->sa_family != AF_INET6 ||
402 sa->sa_len != sizeof(struct sockaddr_in6))
403 goto out;
404
405 if ((unsigned)cmd >= PRC_NCMDS)
406 goto out;
407 if (PRC_IS_REDIRECT(cmd))
408 notify = in6_rtchange, d = NULL;
409 else if (cmd == PRC_HOSTDEAD)
410 d = NULL;
411 else if (inet6ctlerrmap[cmd] == 0)
412 goto out;
413
414 /* if the parameter is from icmp6, decode it. */
415 if (d != NULL) {
416 ip6cp = (struct ip6ctlparam *)d;
417 m = ip6cp->ip6c_m;
418 ip6 = ip6cp->ip6c_ip6;
419 off = ip6cp->ip6c_off;
420 sa6_src = ip6cp->ip6c_src;
421 } else {
422 m = NULL;
423 ip6 = NULL;
424 sa6_src = &sa6_any;
425 }
426
427 if (ip6) {
428 /*
429 * XXX: We assume that when IPV6 is non NULL,
430 * M and OFF are valid.
431 */
432
433 /* check if we can safely examine src and dst ports */
434 if (m->m_pkthdr.len < off + sizeof(*uhp))
435 return;
436
437 bzero(&uh, sizeof(uh));
438 m_copydata(m, off, sizeof(*uhp), &uh);
439
440 in6_pcbnotify(&udbinfo[0], sa, uh.uh_dport,
441 (struct sockaddr *)ip6cp->ip6c_src, uh.uh_sport,
442 cmd, 0, notify);
443 } else {
444 in6_pcbnotify(&udbinfo[0], sa, 0,
445 (const struct sockaddr *)sa6_src, 0,
446 cmd, 0, notify);
447 }
448 out:
449 lwkt_replymsg(&msg->ctlinput.base.lmsg, 0);
450 }
451
452 static int
udp6_getcred(SYSCTL_HANDLER_ARGS)453 udp6_getcred(SYSCTL_HANDLER_ARGS)
454 {
455 struct sockaddr_in6 addrs[2];
456 struct inpcb *inp;
457 int error;
458
459 error = caps_priv_check_td(req->td, SYSCAP_RESTRICTEDROOT);
460 if (error)
461 return (error);
462
463 if (req->newlen != sizeof(addrs))
464 return (EINVAL);
465 if (req->oldlen != sizeof(struct ucred))
466 return (EINVAL);
467 error = SYSCTL_IN(req, addrs, sizeof(addrs));
468 if (error)
469 return (error);
470 crit_enter();
471 inp = in6_pcblookup_hash(&udbinfo[0], &addrs[1].sin6_addr,
472 addrs[1].sin6_port,
473 &addrs[0].sin6_addr, addrs[0].sin6_port,
474 1, NULL);
475 if (!inp || !inp->inp_socket) {
476 error = ENOENT;
477 goto out;
478 }
479 error = SYSCTL_OUT(req, inp->inp_socket->so_cred,
480 sizeof(struct ucred));
481
482 out:
483 crit_exit();
484 return (error);
485 }
486
487 SYSCTL_PROC(_net_inet6_udp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW,
488 0, 0,
489 udp6_getcred, "S,ucred", "Get the ucred of a UDP6 connection");
490
491 /*
492 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
493 * will sofree() it when we return.
494 */
495 static void
udp6_abort(netmsg_t msg)496 udp6_abort(netmsg_t msg)
497 {
498 struct socket *so = msg->abort.base.nm_so;
499 struct inpcb *inp;
500 int error;
501
502 inp = so->so_pcb;
503 if (inp) {
504 soisdisconnected(so);
505
506 in6_pcbdetach(inp);
507 error = 0;
508 } else {
509 error = EINVAL;
510 }
511 lwkt_replymsg(&msg->abort.base.lmsg, error);
512 }
513
514 static void
udp6_attach(netmsg_t msg)515 udp6_attach(netmsg_t msg)
516 {
517 struct socket *so = msg->attach.base.nm_so;
518 struct pru_attach_info *ai = msg->attach.nm_ai;
519 struct inpcb *inp;
520 int error;
521
522 inp = so->so_pcb;
523 if (inp != NULL) {
524 error = EINVAL;
525 goto out;
526 }
527
528 if (so->so_snd.ssb_hiwat == 0 || so->so_rcv.ssb_hiwat == 0) {
529 error = soreserve(so, udp_sendspace, udp_recvspace,
530 ai->sb_rlimit);
531 if (error)
532 goto out;
533 }
534
535 error = in_pcballoc(so, &udbinfo[0]);
536 if (error)
537 goto out;
538
539 inp = (struct inpcb *)so->so_pcb;
540 inp->in6p_hops = -1; /* use kernel default */
541 inp->in6p_cksum = -1; /* just to be sure */
542 /*
543 * XXX: ugly!!
544 * IPv4 TTL initialization is necessary for an IPv6 socket as well,
545 * because the socket may be bound to an IPv6 wildcard address,
546 * which may match an IPv4-mapped IPv6 address.
547 */
548 inp->inp_ip_ttl = ip_defttl;
549 error = 0;
550 out:
551 lwkt_replymsg(&msg->attach.base.lmsg, error);
552 }
553
554 static void
udp6_bind(netmsg_t msg)555 udp6_bind(netmsg_t msg)
556 {
557 struct socket *so =msg->bind.base.nm_so;
558 struct sockaddr *nam = msg->bind.nm_nam;
559 struct thread *td = msg->bind.nm_td;
560 struct sockaddr_in6 *sin6_p = (struct sockaddr_in6 *)nam;
561 struct inpcb *inp;
562 int error;
563
564 inp = so->so_pcb;
565 if (inp == NULL) {
566 error = EINVAL;
567 goto out;
568 }
569
570 error = in6_pcbbind(inp, nam, td);
571 if (error == 0) {
572 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr))
573 inp->inp_flags |= INP_WASBOUND_NOTANY;
574 in_pcbinswildcardhash(inp);
575 }
576 out:
577 lwkt_replymsg(&msg->bind.base.lmsg, error);
578 }
579
580 static void
udp6_connect(netmsg_t msg)581 udp6_connect(netmsg_t msg)
582 {
583 struct socket *so = msg->connect.base.nm_so;
584 struct sockaddr *nam = msg->connect.nm_nam;
585 struct thread *td = msg->connect.nm_td;
586 struct sockaddr_in6 *sin6_p;
587 struct inpcb *inp;
588 int error;
589
590 inp = so->so_pcb;
591 if (inp == NULL) {
592 error = EINVAL;
593 goto out;
594 }
595
596 sin6_p = (struct sockaddr_in6 *)nam;
597 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
598 error = EADDRNOTAVAIL;
599 goto out;
600 }
601
602 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) {
603 error = EISCONN;
604 goto out;
605 }
606 if (inp->inp_flags & INP_WILDCARD)
607 in_pcbremwildcardhash(inp);
608 error = in6_pcbconnect(inp, nam, td);
609 if (error == 0) {
610 soisconnected(so);
611 } else if (error == EAFNOSUPPORT) { /* connection dissolved */
612 /*
613 * Follow traditional BSD behavior and retain
614 * the local port binding. But, fix the old misbehavior
615 * of overwriting any previously bound local address.
616 */
617 if (!(inp->inp_flags & INP_WASBOUND_NOTANY))
618 inp->in6p_laddr = kin6addr_any;
619 in_pcbinswildcardhash(inp);
620 }
621 out:
622 lwkt_replymsg(&msg->connect.base.lmsg, error);
623 }
624
625 static void
udp6_detach(netmsg_t msg)626 udp6_detach(netmsg_t msg)
627 {
628 struct socket *so = msg->detach.base.nm_so;
629 struct inpcb *inp;
630 int error;
631
632 inp = so->so_pcb;
633 if (inp) {
634 in6_pcbdetach(inp);
635 error = 0;
636 } else {
637 error = EINVAL;
638 }
639 lwkt_replymsg(&msg->detach.base.lmsg, error);
640 }
641
642 static void
udp6_disconnect(netmsg_t msg)643 udp6_disconnect(netmsg_t msg)
644 {
645 struct socket *so = msg->disconnect.base.nm_so;
646 struct inpcb *inp;
647 int error;
648
649 inp = so->so_pcb;
650 if (inp == NULL) {
651 error = EINVAL;
652 goto out;
653 }
654
655 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) {
656 error = ENOTCONN;
657 } else {
658 in6_pcbdisconnect(inp);
659 soclrstate(so, SS_ISCONNECTED); /* XXX */
660 error = 0;
661 }
662 out:
663 lwkt_replymsg(&msg->disconnect.base.lmsg, error);
664 }
665
666 static void
udp6_send(netmsg_t msg)667 udp6_send(netmsg_t msg)
668 {
669 struct socket *so = msg->send.base.nm_so;
670 struct mbuf *m = msg->send.nm_m;
671 struct sockaddr *addr = msg->send.nm_addr;
672 struct mbuf *control = msg->send.nm_control;
673 struct thread *td = msg->send.nm_td;
674 struct inpcb *inp;
675 int error = 0;
676
677 inp = so->so_pcb;
678 if (inp == NULL) {
679 error = EINVAL;
680 goto bad;
681 }
682
683 if (addr) {
684 struct sockaddr_in6 *sin6;
685
686 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
687 error = EINVAL;
688 goto bad;
689 }
690 if (addr->sa_family != AF_INET6) {
691 error = EAFNOSUPPORT;
692 goto bad;
693 }
694
695 sin6 = (struct sockaddr_in6 *)addr;
696 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
697 error = EADDRNOTAVAIL;
698 goto bad;
699 }
700 }
701
702 error = udp6_output(inp, m, addr, control, td);
703 lwkt_replymsg(&msg->send.base.lmsg, error);
704 return;
705 bad:
706 m_freem(m);
707 lwkt_replymsg(&msg->send.base.lmsg, error);
708 }
709
710 struct pr_usrreqs udp6_usrreqs = {
711 .pru_abort = udp6_abort,
712 .pru_accept = pr_generic_notsupp,
713 .pru_attach = udp6_attach,
714 .pru_bind = udp6_bind,
715 .pru_connect = udp6_connect,
716 .pru_connect2 = pr_generic_notsupp,
717 .pru_control = in6_control_dispatch,
718 .pru_detach = udp6_detach,
719 .pru_disconnect = udp6_disconnect,
720 .pru_listen = pr_generic_notsupp,
721 .pru_peeraddr = in6_setpeeraddr_dispatch,
722 .pru_rcvd = pr_generic_notsupp,
723 .pru_rcvoob = pr_generic_notsupp,
724 .pru_send = udp6_send,
725 .pru_sense = pru_sense_null,
726 .pru_shutdown = udp_shutdown,
727 .pru_sockaddr = in6_setsockaddr_dispatch,
728 .pru_sosend = sosend,
729 .pru_soreceive = soreceive
730 };
731
732