inet6: emit RTM_NEWADDR messages on address flag changes.
[dragonfly.git] / sys / netinet6 / udp6_usrreq.c
CommitLineData
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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.
dc71b7ab 45 * 3. Neither the name of the University nor the names of its contributors
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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"
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66
67#include <sys/param.h>
68#include <sys/kernel.h>
69#include <sys/mbuf.h>
70#include <sys/protosw.h>
71#include <sys/socket.h>
72#include <sys/socketvar.h>
73#include <sys/sysctl.h>
74#include <sys/errno.h>
75#include <sys/stat.h>
76#include <sys/systm.h>
77#include <sys/syslog.h>
78#include <sys/proc.h>
895c1f85 79#include <sys/priv.h>
e1c6b0c1 80#include <sys/jail.h>
6cef7136 81
abf782b3 82#include <sys/thread2.h>
6cef7136 83#include <sys/socketvar2.h>
002c1265 84#include <sys/msgport2.h>
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85
86#include <net/if.h>
87#include <net/route.h>
88#include <net/if_types.h>
5337421c 89#include <net/netisr2.h>
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90
91#include <netinet/in.h>
92#include <netinet/in_systm.h>
93#include <netinet/ip.h>
94#include <netinet/in_pcb.h>
95#include <netinet/in_var.h>
96#include <netinet/ip_var.h>
97#include <netinet/udp.h>
98#include <netinet/udp_var.h>
99#include <netinet/ip6.h>
100#include <netinet6/ip6_var.h>
101#include <netinet6/in6_pcb.h>
102#include <netinet/icmp6.h>
103#include <netinet6/udp6_var.h>
104#include <netinet6/ip6protosw.h>
105
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106/*
107 * UDP protocol inplementation.
108 * Per RFC 768, August, 1980.
109 */
110
111extern struct protosw inetsw[];
56d702cc 112static int in6_mcmatch (struct inpcb *, struct in6_addr *, struct ifnet *);
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113
114static int
122ebd49 115in6_mcmatch(struct inpcb *in6p, struct in6_addr *ia6, struct ifnet *ifp)
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116{
117 struct ip6_moptions *im6o = in6p->in6p_moptions;
118 struct in6_multi_mship *imm;
119
120 if (im6o == NULL)
121 return 0;
122
123 for (imm = im6o->im6o_memberships.lh_first; imm != NULL;
124 imm = imm->i6mm_chain.le_next) {
125 if ((ifp == NULL ||
126 imm->i6mm_maddr->in6m_ifp == ifp) &&
127 IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr,
128 ia6))
129 return 1;
130 }
131 return 0;
132}
133
134int
dadab5e9 135udp6_input(struct mbuf **mp, int *offp, int proto)
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136{
137 struct mbuf *m = *mp;
34ee9825
RG
138 struct ip6_hdr *ip6;
139 struct udphdr *uh;
140 struct inpcb *in6p;
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141 struct mbuf *opts = NULL;
142 int off = *offp;
143 int plen, ulen;
144 struct sockaddr_in6 udp_in6;
e475836d 145 struct socket *so;
be4519a2 146 struct inpcbinfo *pcbinfo = &udbinfo[0];
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147
148 IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE);
149
150 ip6 = mtod(m, struct ip6_hdr *);
151
6e78e7fe 152 udp_stat.udps_ipackets++;
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153
154 plen = ntohs(ip6->ip6_plen) - off + sizeof(*ip6);
155 uh = (struct udphdr *)((caddr_t)ip6 + off);
156 ulen = ntohs((u_short)uh->uh_ulen);
157
158 if (plen != ulen) {
6e78e7fe 159 udp_stat.udps_badlen++;
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160 goto bad;
161 }
162
163 /*
164 * Checksum extended UDP header and data.
165 */
166 if (uh->uh_sum == 0)
6e78e7fe 167 udp_stat.udps_nosum++;
984263bc 168 else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
6e78e7fe 169 udp_stat.udps_badsum++;
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170 goto bad;
171 }
172
173 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
be4519a2 174 struct inpcb *last, *marker;
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175
176 /*
177 * Deliver a multicast datagram to all sockets
178 * for which the local and remote addresses and ports match
179 * those of the incoming datagram. This allows more than
180 * one process to receive multicasts on the same port.
181 * (This really ought to be done for unicast datagrams as
182 * well, but that would cause problems with existing
183 * applications that open both address-specific sockets and
184 * a wildcard socket listening to the same port -- they would
185 * end up receiving duplicates of every unicast datagram.
186 * Those applications open the multiple sockets to overcome an
187 * inadequacy of the UDP socket interface, but for backwards
188 * compatibility we avoid the problem here rather than
189 * fixing the interface. Maybe 4.5BSD will remedy this?)
190 */
191
192 /*
193 * In a case that laddr should be set to the link-local
194 * address (this happens in RIPng), the multicast address
195 * specified in the received packet does not match with
196 * laddr. To cure this situation, the matching is relaxed
197 * if the receiving interface is the same as one specified
198 * in the socket and if the destination multicast address
199 * matches one of the multicast groups specified in the socket.
200 */
201
202 /*
203 * Construct sockaddr format source address.
204 */
205 init_sin6(&udp_in6, m); /* general init */
206 udp_in6.sin6_port = uh->uh_sport;
207 /*
208 * KAME note: traditionally we dropped udpiphdr from mbuf here.
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209 */
210
211 /*
212 * Locate pcb(s) for datagram.
213 * (Algorithm copied from raw_intr().)
214 */
215 last = NULL;
5a38e392 216
729f22bc 217 marker = in_pcbmarker();
be4519a2
SZ
218
219 GET_PCBINFO_TOKEN(pcbinfo);
220
221 LIST_INSERT_HEAD(&pcbinfo->pcblisthead, marker, inp_list);
222 while ((in6p = LIST_NEXT(marker, inp_list)) != NULL) {
223 LIST_REMOVE(marker, inp_list);
224 LIST_INSERT_AFTER(in6p, marker, inp_list);
225
226 if (in6p->inp_flags & INP_PLACEMARKER)
227 continue;
727ccde8 228 if (!INP_ISIPV6(in6p))
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229 continue;
230 if (in6p->in6p_lport != uh->uh_dport)
231 continue;
232 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) {
233 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr,
234 &ip6->ip6_dst) &&
235 !in6_mcmatch(in6p, &ip6->ip6_dst,
236 m->m_pkthdr.rcvif))
237 continue;
238 }
239 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
240 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr,
241 &ip6->ip6_src) ||
242 in6p->in6p_fport != uh->uh_sport)
243 continue;
244 }
245
246 if (last != NULL) {
e475836d 247 struct mbuf *n;
984263bc 248
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MD
249 if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
250 /*
251 * KAME NOTE: do not
252 * m_copy(m, offset, ...) above.
6d49aa6f 253 * ssb_appendaddr() expects M_PKTHDR,
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254 * and m_copy() will copy M_PKTHDR
255 * only if offset is 0.
256 */
e475836d
MD
257 so = last->in6p_socket;
258 if ((last->in6p_flags & IN6P_CONTROLOPTS) ||
259 (so->so_options & SO_TIMESTAMP)) {
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260 ip6_savecontrol(last, &opts,
261 ip6, n);
e475836d 262 }
984263bc 263 m_adj(n, off + sizeof(struct udphdr));
e475836d
MD
264 lwkt_gettoken(&so->so_rcv.ssb_token);
265 if (ssb_appendaddr(&so->so_rcv,
266 (struct sockaddr *)&udp_in6,
267 n, opts) == 0) {
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MD
268 m_freem(n);
269 if (opts)
270 m_freem(opts);
6e78e7fe 271 udp_stat.udps_fullsock++;
7eaeff3d 272 soroverflow(so);
e475836d
MD
273 } else {
274 sorwakeup(so);
275 }
276 lwkt_reltoken(&so->so_rcv.ssb_token);
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277 opts = NULL;
278 }
279 }
280 last = in6p;
281 /*
282 * Don't look for additional matches if this one does
283 * not have either the SO_REUSEPORT or SO_REUSEADDR
284 * socket options set. This heuristic avoids searching
285 * through all pcbs in the common case of a non-shared
286 * port. It assumes that an application will never
287 * clear these options after setting them.
288 */
289 if ((last->in6p_socket->so_options &
bde3511a 290 (SO_REUSEPORT | SO_REUSEADDR)) == 0)
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291 break;
292 }
be4519a2
SZ
293 LIST_REMOVE(marker, inp_list);
294
295 REL_PCBINFO_TOKEN(pcbinfo);
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296
297 if (last == NULL) {
298 /*
299 * No matching pcb found; discard datagram.
300 * (No need to send an ICMP Port Unreachable
301 * for a broadcast or multicast datgram.)
302 */
6e78e7fe
SZ
303 udp_stat.udps_noport++;
304 udp_stat.udps_noportmcast++;
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MD
305 goto bad;
306 }
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MD
307 if (last->in6p_flags & IN6P_CONTROLOPTS
308 || last->in6p_socket->so_options & SO_TIMESTAMP)
309 ip6_savecontrol(last, &opts, ip6, m);
310
311 m_adj(m, off + sizeof(struct udphdr));
e475836d
MD
312 so = last->in6p_socket;
313 lwkt_gettoken(&so->so_rcv.ssb_token);
314 if (ssb_appendaddr(&so->so_rcv, (struct sockaddr *)&udp_in6,
315 m, opts) == 0) {
6e78e7fe 316 udp_stat.udps_fullsock++;
7eaeff3d 317 soroverflow(so);
e475836d 318 lwkt_reltoken(&so->so_rcv.ssb_token);
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319 goto bad;
320 }
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MD
321 sorwakeup(so);
322 lwkt_reltoken(&so->so_rcv.ssb_token);
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323 return IPPROTO_DONE;
324 }
325 /*
326 * Locate pcb for datagram.
327 */
be4519a2 328 in6p = in6_pcblookup_hash(pcbinfo, &ip6->ip6_src, uh->uh_sport,
984263bc
MD
329 &ip6->ip6_dst, uh->uh_dport, 1,
330 m->m_pkthdr.rcvif);
bde3511a 331 if (in6p == NULL) {
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MD
332 if (log_in_vain) {
333 char buf[INET6_ADDRSTRLEN];
334
335 strcpy(buf, ip6_sprintf(&ip6->ip6_dst));
336 log(LOG_INFO,
337 "Connection attempt to UDP [%s]:%d from [%s]:%d\n",
338 buf, ntohs(uh->uh_dport),
339 ip6_sprintf(&ip6->ip6_src), ntohs(uh->uh_sport));
340 }
6e78e7fe 341 udp_stat.udps_noport++;
984263bc 342 if (m->m_flags & M_MCAST) {
a6ec04bc 343 kprintf("UDP6: M_MCAST is set in a unicast packet.\n");
6e78e7fe 344 udp_stat.udps_noportmcast++;
984263bc
MD
345 goto bad;
346 }
347 icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0);
348 return IPPROTO_DONE;
349 }
984263bc
MD
350
351 /*
352 * Construct sockaddr format source address.
353 * Stuff source address and datagram in user buffer.
354 */
355 init_sin6(&udp_in6, m); /* general init */
356 udp_in6.sin6_port = uh->uh_sport;
357 if (in6p->in6p_flags & IN6P_CONTROLOPTS
358 || in6p->in6p_socket->so_options & SO_TIMESTAMP)
359 ip6_savecontrol(in6p, &opts, ip6, m);
360 m_adj(m, off + sizeof(struct udphdr));
e475836d
MD
361 so = in6p->in6p_socket;
362 lwkt_gettoken(&so->so_rcv.ssb_token);
363 if (ssb_appendaddr(&so->so_rcv, (struct sockaddr *)&udp_in6,
364 m, opts) == 0) {
6e78e7fe 365 udp_stat.udps_fullsock++;
7eaeff3d 366 soroverflow(so);
e475836d 367 lwkt_reltoken(&so->so_rcv.ssb_token);
984263bc
MD
368 goto bad;
369 }
e475836d
MD
370 sorwakeup(so);
371 lwkt_reltoken(&so->so_rcv.ssb_token);
984263bc
MD
372 return IPPROTO_DONE;
373bad:
374 if (m)
375 m_freem(m);
376 if (opts)
377 m_freem(opts);
378 return IPPROTO_DONE;
379}
380
381void
002c1265 382udp6_ctlinput(netmsg_t msg)
984263bc 383{
002c1265
MD
384 int cmd = msg->ctlinput.nm_cmd;
385 struct sockaddr *sa = msg->ctlinput.nm_arg;
386 void *d = msg->ctlinput.nm_extra;
984263bc
MD
387 struct udphdr uh;
388 struct ip6_hdr *ip6;
389 struct mbuf *m;
390 int off = 0;
391 struct ip6ctlparam *ip6cp = NULL;
392 const struct sockaddr_in6 *sa6_src = NULL;
7195d381 393 inp_notify_t notify = udp_notify;
984263bc
MD
394 struct udp_portonly {
395 u_int16_t uh_sport;
396 u_int16_t uh_dport;
397 } *uhp;
398
399 if (sa->sa_family != AF_INET6 ||
400 sa->sa_len != sizeof(struct sockaddr_in6))
002c1265 401 goto out;
984263bc
MD
402
403 if ((unsigned)cmd >= PRC_NCMDS)
002c1265 404 goto out;
984263bc
MD
405 if (PRC_IS_REDIRECT(cmd))
406 notify = in6_rtchange, d = NULL;
407 else if (cmd == PRC_HOSTDEAD)
408 d = NULL;
409 else if (inet6ctlerrmap[cmd] == 0)
002c1265 410 goto out;
984263bc
MD
411
412 /* if the parameter is from icmp6, decode it. */
413 if (d != NULL) {
414 ip6cp = (struct ip6ctlparam *)d;
415 m = ip6cp->ip6c_m;
416 ip6 = ip6cp->ip6c_ip6;
417 off = ip6cp->ip6c_off;
418 sa6_src = ip6cp->ip6c_src;
419 } else {
420 m = NULL;
421 ip6 = NULL;
422 sa6_src = &sa6_any;
423 }
424
425 if (ip6) {
426 /*
427 * XXX: We assume that when IPV6 is non NULL,
428 * M and OFF are valid.
429 */
430
431 /* check if we can safely examine src and dst ports */
432 if (m->m_pkthdr.len < off + sizeof(*uhp))
433 return;
434
435 bzero(&uh, sizeof(uh));
436 m_copydata(m, off, sizeof(*uhp), (caddr_t)&uh);
437
be4519a2 438 in6_pcbnotify(&udbinfo[0], sa, uh.uh_dport,
7d448528
JH
439 (struct sockaddr *)ip6cp->ip6c_src, uh.uh_sport,
440 cmd, 0, notify);
002c1265 441 } else {
be4519a2 442 in6_pcbnotify(&udbinfo[0], sa, 0,
7d448528
JH
443 (const struct sockaddr *)sa6_src, 0,
444 cmd, 0, notify);
002c1265
MD
445 }
446out:
447 lwkt_replymsg(&msg->ctlinput.base.lmsg, 0);
984263bc
MD
448}
449
450static int
451udp6_getcred(SYSCTL_HANDLER_ARGS)
452{
453 struct sockaddr_in6 addrs[2];
454 struct inpcb *inp;
abf782b3 455 int error;
984263bc 456
895c1f85 457 error = priv_check(req->td, PRIV_ROOT);
984263bc
MD
458 if (error)
459 return (error);
460
461 if (req->newlen != sizeof(addrs))
462 return (EINVAL);
463 if (req->oldlen != sizeof(struct ucred))
464 return (EINVAL);
465 error = SYSCTL_IN(req, addrs, sizeof(addrs));
466 if (error)
467 return (error);
abf782b3 468 crit_enter();
be4519a2 469 inp = in6_pcblookup_hash(&udbinfo[0], &addrs[1].sin6_addr,
984263bc
MD
470 addrs[1].sin6_port,
471 &addrs[0].sin6_addr, addrs[0].sin6_port,
472 1, NULL);
473 if (!inp || !inp->inp_socket) {
474 error = ENOENT;
475 goto out;
476 }
477 error = SYSCTL_OUT(req, inp->inp_socket->so_cred,
478 sizeof(struct ucred));
479
480out:
abf782b3 481 crit_exit();
984263bc
MD
482 return (error);
483}
484
485SYSCTL_PROC(_net_inet6_udp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW,
486 0, 0,
487 udp6_getcred, "S,ucred", "Get the ucred of a UDP6 connection");
488
6cef7136
MD
489/*
490 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
491 * will sofree() it when we return.
492 */
002c1265
MD
493static void
494udp6_abort(netmsg_t msg)
984263bc 495{
002c1265 496 struct socket *so = msg->abort.base.nm_so;
984263bc 497 struct inpcb *inp;
6cef7136 498 int error;
984263bc 499
ed894f8c 500 inp = so->so_pcb;
6cef7136
MD
501 if (inp) {
502 soisdisconnected(so);
aad1f734 503
6cef7136
MD
504 in6_pcbdetach(inp);
505 error = 0;
506 } else {
507 error = EINVAL;
508 }
002c1265 509 lwkt_replymsg(&msg->abort.base.lmsg, error);
984263bc
MD
510}
511
002c1265
MD
512static void
513udp6_attach(netmsg_t msg)
984263bc 514{
002c1265
MD
515 struct socket *so = msg->attach.base.nm_so;
516 struct pru_attach_info *ai = msg->attach.nm_ai;
984263bc 517 struct inpcb *inp;
abf782b3 518 int error;
984263bc 519
ed894f8c 520 inp = so->so_pcb;
002c1265
MD
521 if (inp != NULL) {
522 error = EINVAL;
523 goto out;
524 }
984263bc 525
6d49aa6f 526 if (so->so_snd.ssb_hiwat == 0 || so->so_rcv.ssb_hiwat == 0) {
e4700d00
JH
527 error = soreserve(so, udp_sendspace, udp_recvspace,
528 ai->sb_rlimit);
984263bc 529 if (error)
002c1265 530 goto out;
984263bc 531 }
aad1f734 532
be4519a2 533 error = in_pcballoc(so, &udbinfo[0]);
984263bc 534 if (error)
002c1265 535 goto out;
aad1f734 536
984263bc 537 inp = (struct inpcb *)so->so_pcb;
984263bc
MD
538 inp->in6p_hops = -1; /* use kernel default */
539 inp->in6p_cksum = -1; /* just to be sure */
540 /*
541 * XXX: ugly!!
542 * IPv4 TTL initialization is necessary for an IPv6 socket as well,
543 * because the socket may be bound to an IPv6 wildcard address,
544 * which may match an IPv4-mapped IPv6 address.
545 */
546 inp->inp_ip_ttl = ip_defttl;
002c1265
MD
547 error = 0;
548out:
549 lwkt_replymsg(&msg->attach.base.lmsg, error);
984263bc
MD
550}
551
002c1265
MD
552static void
553udp6_bind(netmsg_t msg)
984263bc 554{
002c1265
MD
555 struct socket *so =msg->bind.base.nm_so;
556 struct sockaddr *nam = msg->bind.nm_nam;
557 struct thread *td = msg->bind.nm_td;
2322f6ca 558 struct sockaddr_in6 *sin6_p = (struct sockaddr_in6 *)nam;
984263bc 559 struct inpcb *inp;
abf782b3 560 int error;
984263bc 561
ed894f8c 562 inp = so->so_pcb;
002c1265
MD
563 if (inp == NULL) {
564 error = EINVAL;
565 goto out;
566 }
984263bc 567
dadab5e9 568 error = in6_pcbbind(inp, nam, td);
f772087c
JH
569 if (error == 0) {
570 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr))
571 inp->inp_flags |= INP_WASBOUND_NOTANY;
572 in_pcbinswildcardhash(inp);
573 }
002c1265
MD
574out:
575 lwkt_replymsg(&msg->bind.base.lmsg, error);
984263bc
MD
576}
577
002c1265
MD
578static void
579udp6_connect(netmsg_t msg)
984263bc 580{
002c1265
MD
581 struct socket *so = msg->connect.base.nm_so;
582 struct sockaddr *nam = msg->connect.nm_nam;
583 struct thread *td = msg->connect.nm_td;
727ccde8 584 struct sockaddr_in6 *sin6_p;
984263bc 585 struct inpcb *inp;
abf782b3 586 int error;
984263bc 587
ed894f8c 588 inp = so->so_pcb;
002c1265
MD
589 if (inp == NULL) {
590 error = EINVAL;
591 goto out;
592 }
984263bc 593
727ccde8
SZ
594 sin6_p = (struct sockaddr_in6 *)nam;
595 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
596 error = EADDRNOTAVAIL;
597 goto out;
984263bc 598 }
727ccde8 599
002c1265
MD
600 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) {
601 error = EISCONN;
602 goto out;
603 }
2322f6ca
JH
604 if (inp->inp_flags & INP_WILDCARD)
605 in_pcbremwildcardhash(inp);
002c1265
MD
606 if (!prison_remote_ip(td, nam)) {
607 error = EAFNOSUPPORT; /* IPv4 only jail */
608 goto out;
609 }
dadab5e9 610 error = in6_pcbconnect(inp, nam, td);
984263bc 611 if (error == 0) {
984263bc 612 soisconnected(so);
2322f6ca
JH
613 } else if (error == EAFNOSUPPORT) { /* connection dissolved */
614 /*
615 * Follow traditional BSD behavior and retain
616 * the local port binding. But, fix the old misbehavior
617 * of overwriting any previously bound local address.
618 */
619 if (!(inp->inp_flags & INP_WASBOUND_NOTANY))
84204577 620 inp->in6p_laddr = kin6addr_any;
2322f6ca 621 in_pcbinswildcardhash(inp);
984263bc 622 }
002c1265
MD
623out:
624 lwkt_replymsg(&msg->connect.base.lmsg, error);
984263bc
MD
625}
626
002c1265
MD
627static void
628udp6_detach(netmsg_t msg)
984263bc 629{
002c1265 630 struct socket *so = msg->detach.base.nm_so;
984263bc 631 struct inpcb *inp;
002c1265 632 int error;
984263bc 633
ed894f8c 634 inp = so->so_pcb;
002c1265 635 if (inp) {
002c1265 636 in6_pcbdetach(inp);
002c1265
MD
637 error = 0;
638 } else {
639 error = EINVAL;
640 }
641 lwkt_replymsg(&msg->detach.base.lmsg, error);
984263bc
MD
642}
643
002c1265
MD
644static void
645udp6_disconnect(netmsg_t msg)
984263bc 646{
002c1265 647 struct socket *so = msg->disconnect.base.nm_so;
984263bc 648 struct inpcb *inp;
002c1265 649 int error;
984263bc 650
ed894f8c 651 inp = so->so_pcb;
002c1265
MD
652 if (inp == NULL) {
653 error = EINVAL;
654 goto out;
655 }
984263bc 656
002c1265
MD
657 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) {
658 error = ENOTCONN;
659 } else {
002c1265 660 in6_pcbdisconnect(inp);
002c1265
MD
661 soclrstate(so, SS_ISCONNECTED); /* XXX */
662 error = 0;
663 }
664out:
665 lwkt_replymsg(&msg->disconnect.base.lmsg, error);
984263bc
MD
666}
667
002c1265
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668static void
669udp6_send(netmsg_t msg)
984263bc 670{
002c1265
MD
671 struct socket *so = msg->send.base.nm_so;
672 struct mbuf *m = msg->send.nm_m;
673 struct sockaddr *addr = msg->send.nm_addr;
674 struct mbuf *control = msg->send.nm_control;
675 struct thread *td = msg->send.nm_td;
984263bc
MD
676 struct inpcb *inp;
677 int error = 0;
678
ed894f8c 679 inp = so->so_pcb;
bde3511a 680 if (inp == NULL) {
984263bc
MD
681 error = EINVAL;
682 goto bad;
683 }
684
685 if (addr) {
727ccde8
SZ
686 struct sockaddr_in6 *sin6;
687
bde3511a 688 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
984263bc
MD
689 error = EINVAL;
690 goto bad;
691 }
692 if (addr->sa_family != AF_INET6) {
693 error = EAFNOSUPPORT;
694 goto bad;
695 }
727ccde8
SZ
696
697 sin6 = (struct sockaddr_in6 *)addr;
698 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
699 error = EADDRNOTAVAIL;
700 goto bad;
701 }
984263bc
MD
702 }
703
002c1265 704 error = udp6_output(inp, m, addr, control, td);
c14a35e9
MD
705 lwkt_replymsg(&msg->send.base.lmsg, error);
706 return;
bde3511a 707bad:
984263bc 708 m_freem(m);
002c1265 709 lwkt_replymsg(&msg->send.base.lmsg, error);
984263bc
MD
710}
711
712struct pr_usrreqs udp6_usrreqs = {
fa5e758c 713 .pru_abort = udp6_abort,
002c1265 714 .pru_accept = pr_generic_notsupp,
fa5e758c
MD
715 .pru_attach = udp6_attach,
716 .pru_bind = udp6_bind,
717 .pru_connect = udp6_connect,
002c1265
MD
718 .pru_connect2 = pr_generic_notsupp,
719 .pru_control = in6_control_dispatch,
fa5e758c
MD
720 .pru_detach = udp6_detach,
721 .pru_disconnect = udp6_disconnect,
002c1265 722 .pru_listen = pr_generic_notsupp,
727ccde8 723 .pru_peeraddr = in6_setpeeraddr_dispatch,
002c1265
MD
724 .pru_rcvd = pr_generic_notsupp,
725 .pru_rcvoob = pr_generic_notsupp,
fa5e758c
MD
726 .pru_send = udp6_send,
727 .pru_sense = pru_sense_null,
728 .pru_shutdown = udp_shutdown,
727ccde8 729 .pru_sockaddr = in6_setsockaddr_dispatch,
fa5e758c 730 .pru_sosend = sosend,
8b5c39bb 731 .pru_soreceive = soreceive
984263bc 732};
fa5e758c 733