1/*
2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the project nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
| 1/*
2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the project nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
|
29 * $FreeBSD: head/sys/netinet6/raw_ip6.c 98211 2002-06-14 08:35:21Z hsu $
| 29 * $FreeBSD: head/sys/netinet6/raw_ip6.c 105194 2002-10-16 01:54:46Z sam $
|
30 */
31
32/*
33 * Copyright (c) 1982, 1986, 1988, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by the University of
47 * California, Berkeley and its contributors.
48 * 4. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 * SUCH DAMAGE.
63 *
64 * @(#)raw_ip.c 8.2 (Berkeley) 1/4/94
65 */
66
67#include "opt_ipsec.h"
68#include "opt_inet6.h"
69
70#include <sys/param.h>
71#include <sys/errno.h>
72#include <sys/lock.h>
73#include <sys/malloc.h>
74#include <sys/mbuf.h>
75#include <sys/proc.h>
76#include <sys/protosw.h>
77#include <sys/signalvar.h>
78#include <sys/socket.h>
79#include <sys/socketvar.h>
80#include <sys/sx.h>
81#include <sys/systm.h>
82
83#include <net/if.h>
84#include <net/if_types.h>
85#include <net/route.h>
86
87#include <netinet/in.h>
88#include <netinet/in_var.h>
89#include <netinet/in_systm.h>
90#include <netinet/icmp6.h>
91#include <netinet/in_pcb.h>
92#include <netinet/ip6.h>
93#include <netinet6/ip6protosw.h>
94#include <netinet6/ip6_mroute.h>
95#include <netinet6/in6_pcb.h>
96#include <netinet6/ip6_var.h>
97#include <netinet6/nd6.h>
98#include <netinet6/raw_ip6.h>
99#ifdef ENABLE_DEFAULT_SCOPE
100#include <netinet6/scope6_var.h>
101#endif
102
103#ifdef IPSEC
104#include <netinet6/ipsec.h>
105#include <netinet6/ipsec6.h>
106#endif /*IPSEC*/
107
108#include <machine/stdarg.h>
109
110#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
111#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
112
113/*
114 * Raw interface to IP6 protocol.
115 */
116
117extern struct inpcbhead ripcb;
118extern struct inpcbinfo ripcbinfo;
119extern u_long rip_sendspace;
120extern u_long rip_recvspace;
121
122struct rip6stat rip6stat;
123
124/*
125 * Setup generic address and protocol structures
126 * for raw_input routine, then pass them along with
127 * mbuf chain.
128 */
129int
130rip6_input(mp, offp, proto)
131 struct mbuf **mp;
132 int *offp, proto;
133{
134 struct mbuf *m = *mp;
135 register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
136 register struct inpcb *in6p;
137 struct inpcb *last = 0;
138 struct mbuf *opts = NULL;
139 struct sockaddr_in6 rip6src;
140
141 rip6stat.rip6s_ipackets++;
142
143 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) {
144 /* XXX send icmp6 host/port unreach? */
145 m_freem(m);
146 return IPPROTO_DONE;
147 }
148
149 init_sin6(&rip6src, m); /* general init */
150
151 LIST_FOREACH(in6p, &ripcb, inp_list) {
152 if ((in6p->in6p_vflag & INP_IPV6) == 0)
153 continue;
154 if (in6p->in6p_ip6_nxt &&
155 in6p->in6p_ip6_nxt != proto)
156 continue;
157 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
158 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
159 continue;
160 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
161 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
162 continue;
163 if (in6p->in6p_cksum != -1) {
164 rip6stat.rip6s_isum++;
165 if (in6_cksum(m, ip6->ip6_nxt, *offp,
166 m->m_pkthdr.len - *offp)) {
167 rip6stat.rip6s_badsum++;
168 continue;
169 }
170 }
171 if (last) {
172 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
173
174#ifdef IPSEC
175 /*
176 * Check AH/ESP integrity.
177 */
178 if (n && ipsec6_in_reject_so(n, last->inp_socket)) {
179 m_freem(n);
180 ipsec6stat.in_polvio++;
181 /* do not inject data into pcb */
182 } else
183#endif /*IPSEC*/
184 if (n) {
185 if (last->in6p_flags & IN6P_CONTROLOPTS ||
186 last->in6p_socket->so_options & SO_TIMESTAMP)
187 ip6_savecontrol(last, &opts, ip6, n);
188 /* strip intermediate headers */
189 m_adj(n, *offp);
190 if (sbappendaddr(&last->in6p_socket->so_rcv,
191 (struct sockaddr *)&rip6src,
192 n, opts) == 0) {
193 m_freem(n);
194 if (opts)
195 m_freem(opts);
196 rip6stat.rip6s_fullsock++;
197 } else
198 sorwakeup(last->in6p_socket);
199 opts = NULL;
200 }
201 }
202 last = in6p;
203 }
204#ifdef IPSEC
205 /*
206 * Check AH/ESP integrity.
207 */
208 if (last && ipsec6_in_reject_so(m, last->inp_socket)) {
209 m_freem(m);
210 ipsec6stat.in_polvio++;
211 ip6stat.ip6s_delivered--;
212 /* do not inject data into pcb */
213 } else
214#endif /*IPSEC*/
215 if (last) {
216 if (last->in6p_flags & IN6P_CONTROLOPTS ||
217 last->in6p_socket->so_options & SO_TIMESTAMP)
218 ip6_savecontrol(last, &opts, ip6, m);
219 /* strip intermediate headers */
220 m_adj(m, *offp);
221 if (sbappendaddr(&last->in6p_socket->so_rcv,
222 (struct sockaddr *)&rip6src, m, opts) == 0) {
223 m_freem(m);
224 if (opts)
225 m_freem(opts);
226 rip6stat.rip6s_fullsock++;
227 } else
228 sorwakeup(last->in6p_socket);
229 } else {
230 rip6stat.rip6s_nosock++;
231 if (m->m_flags & M_MCAST)
232 rip6stat.rip6s_nosockmcast++;
233 if (proto == IPPROTO_NONE)
234 m_freem(m);
235 else {
236 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
237 icmp6_error(m, ICMP6_PARAM_PROB,
238 ICMP6_PARAMPROB_NEXTHEADER,
239 prvnxtp - mtod(m, char *));
240 }
241 ip6stat.ip6s_delivered--;
242 }
243 return IPPROTO_DONE;
244}
245
246void
247rip6_ctlinput(cmd, sa, d)
248 int cmd;
249 struct sockaddr *sa;
250 void *d;
251{
252 struct ip6_hdr *ip6;
253 struct mbuf *m;
254 int off = 0;
255 struct ip6ctlparam *ip6cp = NULL;
256 const struct sockaddr_in6 *sa6_src = NULL;
257 struct inpcb *(*notify) __P((struct inpcb *, int)) = in6_rtchange;
258
259 if (sa->sa_family != AF_INET6 ||
260 sa->sa_len != sizeof(struct sockaddr_in6))
261 return;
262
263 if ((unsigned)cmd >= PRC_NCMDS)
264 return;
265 if (PRC_IS_REDIRECT(cmd))
266 notify = in6_rtchange, d = NULL;
267 else if (cmd == PRC_HOSTDEAD)
268 d = NULL;
269 else if (inet6ctlerrmap[cmd] == 0)
270 return;
271
272 /* if the parameter is from icmp6, decode it. */
273 if (d != NULL) {
274 ip6cp = (struct ip6ctlparam *)d;
275 m = ip6cp->ip6c_m;
276 ip6 = ip6cp->ip6c_ip6;
277 off = ip6cp->ip6c_off;
278 sa6_src = ip6cp->ip6c_src;
279 } else {
280 m = NULL;
281 ip6 = NULL;
282 sa6_src = &sa6_any;
283 }
284
285 (void) in6_pcbnotify(&ripcb, sa, 0, (const struct sockaddr *)sa6_src,
286 0, cmd, notify);
287}
288
289/*
290 * Generate IPv6 header and pass packet to ip6_output.
291 * Tack on options user may have setup with control call.
292 */
293int
294#if __STDC__
295rip6_output(struct mbuf *m, ...)
296#else
297rip6_output(m, va_alist)
298 struct mbuf *m;
299 va_dcl
300#endif
301{
302 struct socket *so;
303 struct sockaddr_in6 *dstsock;
304 struct mbuf *control;
305 struct in6_addr *dst;
306 struct ip6_hdr *ip6;
307 struct inpcb *in6p;
308 u_int plen = m->m_pkthdr.len;
309 int error = 0;
310 struct ip6_pktopts opt, *optp = 0;
311 struct ifnet *oifp = NULL;
312 int type = 0, code = 0; /* for ICMPv6 output statistics only */
313 int priv = 0;
314 va_list ap;
315
316 va_start(ap, m);
317 so = va_arg(ap, struct socket *);
318 dstsock = va_arg(ap, struct sockaddr_in6 *);
319 control = va_arg(ap, struct mbuf *);
320 va_end(ap);
321
322 in6p = sotoin6pcb(so);
323
324 priv = 0;
325 if (so->so_cred->cr_uid == 0)
326 priv = 1;
327 dst = &dstsock->sin6_addr;
328 if (control) {
329 if ((error = ip6_setpktoptions(control, &opt, priv, 0)) != 0)
330 goto bad;
331 optp = &opt;
332 } else
333 optp = in6p->in6p_outputopts;
334
335 /*
336 * For an ICMPv6 packet, we should know its type and code
337 * to update statistics.
338 */
339 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
340 struct icmp6_hdr *icmp6;
341 if (m->m_len < sizeof(struct icmp6_hdr) &&
342 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
343 error = ENOBUFS;
344 goto bad;
345 }
346 icmp6 = mtod(m, struct icmp6_hdr *);
347 type = icmp6->icmp6_type;
348 code = icmp6->icmp6_code;
349 }
350
351 M_PREPEND(m, sizeof(*ip6), M_TRYWAIT);
352 ip6 = mtod(m, struct ip6_hdr *);
353
354 /*
355 * Next header might not be ICMP6 but use its pseudo header anyway.
356 */
357 ip6->ip6_dst = *dst;
358
359 /*
360 * If the scope of the destination is link-local, embed the interface
361 * index in the address.
362 *
363 * XXX advanced-api value overrides sin6_scope_id
364 */
365 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
366 struct in6_pktinfo *pi;
367
368 /*
369 * XXX Boundary check is assumed to be already done in
370 * ip6_setpktoptions().
371 */
372 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
373 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
374 oifp = ifnet_byindex(pi->ipi6_ifindex);
375 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
376 in6p->in6p_moptions &&
377 in6p->in6p_moptions->im6o_multicast_ifp) {
378 oifp = in6p->in6p_moptions->im6o_multicast_ifp;
379 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
380 } else if (dstsock->sin6_scope_id) {
381 /* boundary check */
382 if (dstsock->sin6_scope_id < 0
383 || if_index < dstsock->sin6_scope_id) {
384 error = ENXIO; /* XXX EINVAL? */
385 goto bad;
386 }
387 ip6->ip6_dst.s6_addr16[1]
388 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/
389 }
390 }
391
392 /*
393 * Source address selection.
394 */
395 {
396 struct in6_addr *in6a;
397
398 if ((in6a = in6_selectsrc(dstsock, optp,
399 in6p->in6p_moptions,
400 &in6p->in6p_route,
401 &in6p->in6p_laddr,
402 &error)) == 0) {
403 if (error == 0)
404 error = EADDRNOTAVAIL;
405 goto bad;
406 }
407 ip6->ip6_src = *in6a;
408 if (in6p->in6p_route.ro_rt)
409 oifp = ifnet_byindex(in6p->in6p_route.ro_rt->rt_ifp->if_index);
410 }
411 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
412 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK);
413 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
414 (IPV6_VERSION & IPV6_VERSION_MASK);
415 /* ip6_plen will be filled in ip6_output, so not fill it here. */
416 ip6->ip6_nxt = in6p->in6p_ip6_nxt;
417 ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
418
419 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
420 in6p->in6p_cksum != -1) {
421 struct mbuf *n;
422 int off;
423 u_int16_t *p;
424
425 /* compute checksum */
426 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
427 off = offsetof(struct icmp6_hdr, icmp6_cksum);
428 else
429 off = in6p->in6p_cksum;
430 if (plen < off + 1) {
431 error = EINVAL;
432 goto bad;
433 }
434 off += sizeof(struct ip6_hdr);
435
436 n = m;
437 while (n && n->m_len <= off) {
438 off -= n->m_len;
439 n = n->m_next;
440 }
441 if (!n)
442 goto bad;
443 p = (u_int16_t *)(mtod(n, caddr_t) + off);
444 *p = 0;
445 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
446 }
447
| 30 */
31
32/*
33 * Copyright (c) 1982, 1986, 1988, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by the University of
47 * California, Berkeley and its contributors.
48 * 4. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 * SUCH DAMAGE.
63 *
64 * @(#)raw_ip.c 8.2 (Berkeley) 1/4/94
65 */
66
67#include "opt_ipsec.h"
68#include "opt_inet6.h"
69
70#include <sys/param.h>
71#include <sys/errno.h>
72#include <sys/lock.h>
73#include <sys/malloc.h>
74#include <sys/mbuf.h>
75#include <sys/proc.h>
76#include <sys/protosw.h>
77#include <sys/signalvar.h>
78#include <sys/socket.h>
79#include <sys/socketvar.h>
80#include <sys/sx.h>
81#include <sys/systm.h>
82
83#include <net/if.h>
84#include <net/if_types.h>
85#include <net/route.h>
86
87#include <netinet/in.h>
88#include <netinet/in_var.h>
89#include <netinet/in_systm.h>
90#include <netinet/icmp6.h>
91#include <netinet/in_pcb.h>
92#include <netinet/ip6.h>
93#include <netinet6/ip6protosw.h>
94#include <netinet6/ip6_mroute.h>
95#include <netinet6/in6_pcb.h>
96#include <netinet6/ip6_var.h>
97#include <netinet6/nd6.h>
98#include <netinet6/raw_ip6.h>
99#ifdef ENABLE_DEFAULT_SCOPE
100#include <netinet6/scope6_var.h>
101#endif
102
103#ifdef IPSEC
104#include <netinet6/ipsec.h>
105#include <netinet6/ipsec6.h>
106#endif /*IPSEC*/
107
108#include <machine/stdarg.h>
109
110#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
111#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
112
113/*
114 * Raw interface to IP6 protocol.
115 */
116
117extern struct inpcbhead ripcb;
118extern struct inpcbinfo ripcbinfo;
119extern u_long rip_sendspace;
120extern u_long rip_recvspace;
121
122struct rip6stat rip6stat;
123
124/*
125 * Setup generic address and protocol structures
126 * for raw_input routine, then pass them along with
127 * mbuf chain.
128 */
129int
130rip6_input(mp, offp, proto)
131 struct mbuf **mp;
132 int *offp, proto;
133{
134 struct mbuf *m = *mp;
135 register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
136 register struct inpcb *in6p;
137 struct inpcb *last = 0;
138 struct mbuf *opts = NULL;
139 struct sockaddr_in6 rip6src;
140
141 rip6stat.rip6s_ipackets++;
142
143 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) {
144 /* XXX send icmp6 host/port unreach? */
145 m_freem(m);
146 return IPPROTO_DONE;
147 }
148
149 init_sin6(&rip6src, m); /* general init */
150
151 LIST_FOREACH(in6p, &ripcb, inp_list) {
152 if ((in6p->in6p_vflag & INP_IPV6) == 0)
153 continue;
154 if (in6p->in6p_ip6_nxt &&
155 in6p->in6p_ip6_nxt != proto)
156 continue;
157 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
158 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
159 continue;
160 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
161 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
162 continue;
163 if (in6p->in6p_cksum != -1) {
164 rip6stat.rip6s_isum++;
165 if (in6_cksum(m, ip6->ip6_nxt, *offp,
166 m->m_pkthdr.len - *offp)) {
167 rip6stat.rip6s_badsum++;
168 continue;
169 }
170 }
171 if (last) {
172 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
173
174#ifdef IPSEC
175 /*
176 * Check AH/ESP integrity.
177 */
178 if (n && ipsec6_in_reject_so(n, last->inp_socket)) {
179 m_freem(n);
180 ipsec6stat.in_polvio++;
181 /* do not inject data into pcb */
182 } else
183#endif /*IPSEC*/
184 if (n) {
185 if (last->in6p_flags & IN6P_CONTROLOPTS ||
186 last->in6p_socket->so_options & SO_TIMESTAMP)
187 ip6_savecontrol(last, &opts, ip6, n);
188 /* strip intermediate headers */
189 m_adj(n, *offp);
190 if (sbappendaddr(&last->in6p_socket->so_rcv,
191 (struct sockaddr *)&rip6src,
192 n, opts) == 0) {
193 m_freem(n);
194 if (opts)
195 m_freem(opts);
196 rip6stat.rip6s_fullsock++;
197 } else
198 sorwakeup(last->in6p_socket);
199 opts = NULL;
200 }
201 }
202 last = in6p;
203 }
204#ifdef IPSEC
205 /*
206 * Check AH/ESP integrity.
207 */
208 if (last && ipsec6_in_reject_so(m, last->inp_socket)) {
209 m_freem(m);
210 ipsec6stat.in_polvio++;
211 ip6stat.ip6s_delivered--;
212 /* do not inject data into pcb */
213 } else
214#endif /*IPSEC*/
215 if (last) {
216 if (last->in6p_flags & IN6P_CONTROLOPTS ||
217 last->in6p_socket->so_options & SO_TIMESTAMP)
218 ip6_savecontrol(last, &opts, ip6, m);
219 /* strip intermediate headers */
220 m_adj(m, *offp);
221 if (sbappendaddr(&last->in6p_socket->so_rcv,
222 (struct sockaddr *)&rip6src, m, opts) == 0) {
223 m_freem(m);
224 if (opts)
225 m_freem(opts);
226 rip6stat.rip6s_fullsock++;
227 } else
228 sorwakeup(last->in6p_socket);
229 } else {
230 rip6stat.rip6s_nosock++;
231 if (m->m_flags & M_MCAST)
232 rip6stat.rip6s_nosockmcast++;
233 if (proto == IPPROTO_NONE)
234 m_freem(m);
235 else {
236 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
237 icmp6_error(m, ICMP6_PARAM_PROB,
238 ICMP6_PARAMPROB_NEXTHEADER,
239 prvnxtp - mtod(m, char *));
240 }
241 ip6stat.ip6s_delivered--;
242 }
243 return IPPROTO_DONE;
244}
245
246void
247rip6_ctlinput(cmd, sa, d)
248 int cmd;
249 struct sockaddr *sa;
250 void *d;
251{
252 struct ip6_hdr *ip6;
253 struct mbuf *m;
254 int off = 0;
255 struct ip6ctlparam *ip6cp = NULL;
256 const struct sockaddr_in6 *sa6_src = NULL;
257 struct inpcb *(*notify) __P((struct inpcb *, int)) = in6_rtchange;
258
259 if (sa->sa_family != AF_INET6 ||
260 sa->sa_len != sizeof(struct sockaddr_in6))
261 return;
262
263 if ((unsigned)cmd >= PRC_NCMDS)
264 return;
265 if (PRC_IS_REDIRECT(cmd))
266 notify = in6_rtchange, d = NULL;
267 else if (cmd == PRC_HOSTDEAD)
268 d = NULL;
269 else if (inet6ctlerrmap[cmd] == 0)
270 return;
271
272 /* if the parameter is from icmp6, decode it. */
273 if (d != NULL) {
274 ip6cp = (struct ip6ctlparam *)d;
275 m = ip6cp->ip6c_m;
276 ip6 = ip6cp->ip6c_ip6;
277 off = ip6cp->ip6c_off;
278 sa6_src = ip6cp->ip6c_src;
279 } else {
280 m = NULL;
281 ip6 = NULL;
282 sa6_src = &sa6_any;
283 }
284
285 (void) in6_pcbnotify(&ripcb, sa, 0, (const struct sockaddr *)sa6_src,
286 0, cmd, notify);
287}
288
289/*
290 * Generate IPv6 header and pass packet to ip6_output.
291 * Tack on options user may have setup with control call.
292 */
293int
294#if __STDC__
295rip6_output(struct mbuf *m, ...)
296#else
297rip6_output(m, va_alist)
298 struct mbuf *m;
299 va_dcl
300#endif
301{
302 struct socket *so;
303 struct sockaddr_in6 *dstsock;
304 struct mbuf *control;
305 struct in6_addr *dst;
306 struct ip6_hdr *ip6;
307 struct inpcb *in6p;
308 u_int plen = m->m_pkthdr.len;
309 int error = 0;
310 struct ip6_pktopts opt, *optp = 0;
311 struct ifnet *oifp = NULL;
312 int type = 0, code = 0; /* for ICMPv6 output statistics only */
313 int priv = 0;
314 va_list ap;
315
316 va_start(ap, m);
317 so = va_arg(ap, struct socket *);
318 dstsock = va_arg(ap, struct sockaddr_in6 *);
319 control = va_arg(ap, struct mbuf *);
320 va_end(ap);
321
322 in6p = sotoin6pcb(so);
323
324 priv = 0;
325 if (so->so_cred->cr_uid == 0)
326 priv = 1;
327 dst = &dstsock->sin6_addr;
328 if (control) {
329 if ((error = ip6_setpktoptions(control, &opt, priv, 0)) != 0)
330 goto bad;
331 optp = &opt;
332 } else
333 optp = in6p->in6p_outputopts;
334
335 /*
336 * For an ICMPv6 packet, we should know its type and code
337 * to update statistics.
338 */
339 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
340 struct icmp6_hdr *icmp6;
341 if (m->m_len < sizeof(struct icmp6_hdr) &&
342 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
343 error = ENOBUFS;
344 goto bad;
345 }
346 icmp6 = mtod(m, struct icmp6_hdr *);
347 type = icmp6->icmp6_type;
348 code = icmp6->icmp6_code;
349 }
350
351 M_PREPEND(m, sizeof(*ip6), M_TRYWAIT);
352 ip6 = mtod(m, struct ip6_hdr *);
353
354 /*
355 * Next header might not be ICMP6 but use its pseudo header anyway.
356 */
357 ip6->ip6_dst = *dst;
358
359 /*
360 * If the scope of the destination is link-local, embed the interface
361 * index in the address.
362 *
363 * XXX advanced-api value overrides sin6_scope_id
364 */
365 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
366 struct in6_pktinfo *pi;
367
368 /*
369 * XXX Boundary check is assumed to be already done in
370 * ip6_setpktoptions().
371 */
372 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
373 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
374 oifp = ifnet_byindex(pi->ipi6_ifindex);
375 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
376 in6p->in6p_moptions &&
377 in6p->in6p_moptions->im6o_multicast_ifp) {
378 oifp = in6p->in6p_moptions->im6o_multicast_ifp;
379 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
380 } else if (dstsock->sin6_scope_id) {
381 /* boundary check */
382 if (dstsock->sin6_scope_id < 0
383 || if_index < dstsock->sin6_scope_id) {
384 error = ENXIO; /* XXX EINVAL? */
385 goto bad;
386 }
387 ip6->ip6_dst.s6_addr16[1]
388 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/
389 }
390 }
391
392 /*
393 * Source address selection.
394 */
395 {
396 struct in6_addr *in6a;
397
398 if ((in6a = in6_selectsrc(dstsock, optp,
399 in6p->in6p_moptions,
400 &in6p->in6p_route,
401 &in6p->in6p_laddr,
402 &error)) == 0) {
403 if (error == 0)
404 error = EADDRNOTAVAIL;
405 goto bad;
406 }
407 ip6->ip6_src = *in6a;
408 if (in6p->in6p_route.ro_rt)
409 oifp = ifnet_byindex(in6p->in6p_route.ro_rt->rt_ifp->if_index);
410 }
411 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
412 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK);
413 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
414 (IPV6_VERSION & IPV6_VERSION_MASK);
415 /* ip6_plen will be filled in ip6_output, so not fill it here. */
416 ip6->ip6_nxt = in6p->in6p_ip6_nxt;
417 ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
418
419 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
420 in6p->in6p_cksum != -1) {
421 struct mbuf *n;
422 int off;
423 u_int16_t *p;
424
425 /* compute checksum */
426 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
427 off = offsetof(struct icmp6_hdr, icmp6_cksum);
428 else
429 off = in6p->in6p_cksum;
430 if (plen < off + 1) {
431 error = EINVAL;
432 goto bad;
433 }
434 off += sizeof(struct ip6_hdr);
435
436 n = m;
437 while (n && n->m_len <= off) {
438 off -= n->m_len;
439 n = n->m_next;
440 }
441 if (!n)
442 goto bad;
443 p = (u_int16_t *)(mtod(n, caddr_t) + off);
444 *p = 0;
445 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
446 }
447
|
448#ifdef IPSEC
449 if (ipsec_setsocket(m, so) != 0) {
450 error = ENOBUFS;
451 goto bad;
452 }
453#endif /*IPSEC*/
454
| |
455 error = ip6_output(m, optp, &in6p->in6p_route, 0,
| 448 error = ip6_output(m, optp, &in6p->in6p_route, 0,
|
456 in6p->in6p_moptions, &oifp);
| 449 in6p->in6p_moptions, &oifp, in6p);
|
457 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
458 if (oifp)
459 icmp6_ifoutstat_inc(oifp, type, code);
460 icmp6stat.icp6s_outhist[type]++;
461 } else
462 rip6stat.rip6s_opackets++;
463
464 goto freectl;
465
466 bad:
467 if (m)
468 m_freem(m);
469
470 freectl:
471 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt)
472 RTFREE(optp->ip6po_route.ro_rt);
473 if (control) {
474 if (optp == &opt)
475 ip6_clearpktopts(optp, 0, -1);
476 m_freem(control);
477 }
478 return(error);
479}
480
481/*
482 * Raw IPv6 socket option processing.
483 */
484int
485rip6_ctloutput(so, sopt)
486 struct socket *so;
487 struct sockopt *sopt;
488{
489 int error;
490
491 if (sopt->sopt_level == IPPROTO_ICMPV6)
492 /*
493 * XXX: is it better to call icmp6_ctloutput() directly
494 * from protosw?
495 */
496 return(icmp6_ctloutput(so, sopt));
497 else if (sopt->sopt_level != IPPROTO_IPV6)
498 return (EINVAL);
499
500 error = 0;
501
502 switch (sopt->sopt_dir) {
503 case SOPT_GET:
504 switch (sopt->sopt_name) {
505 case MRT6_INIT:
506 case MRT6_DONE:
507 case MRT6_ADD_MIF:
508 case MRT6_DEL_MIF:
509 case MRT6_ADD_MFC:
510 case MRT6_DEL_MFC:
511 case MRT6_PIM:
512 error = ip6_mrouter_get(so, sopt);
513 break;
514 default:
515 error = ip6_ctloutput(so, sopt);
516 break;
517 }
518 break;
519
520 case SOPT_SET:
521 switch (sopt->sopt_name) {
522 case MRT6_INIT:
523 case MRT6_DONE:
524 case MRT6_ADD_MIF:
525 case MRT6_DEL_MIF:
526 case MRT6_ADD_MFC:
527 case MRT6_DEL_MFC:
528 case MRT6_PIM:
529 error = ip6_mrouter_set(so, sopt);
530 break;
531 default:
532 error = ip6_ctloutput(so, sopt);
533 break;
534 }
535 break;
536 }
537
538 return (error);
539}
540
541static int
542rip6_attach(struct socket *so, int proto, struct thread *td)
543{
544 struct inpcb *inp;
545 int error, s;
546
547 inp = sotoinpcb(so);
548 if (inp)
549 panic("rip6_attach");
550 if (td && (error = suser(td)) != 0)
551 return error;
552
553 error = soreserve(so, rip_sendspace, rip_recvspace);
554 if (error)
555 return error;
556 s = splnet();
557 error = in_pcballoc(so, &ripcbinfo, td);
558 splx(s);
559 if (error)
560 return error;
561 inp = (struct inpcb *)so->so_pcb;
562 inp->inp_vflag |= INP_IPV6;
563 inp->in6p_ip6_nxt = (long)proto;
564 inp->in6p_hops = -1; /* use kernel default */
565 inp->in6p_cksum = -1;
566 MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *,
567 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
568 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
569 return 0;
570}
571
572static int
573rip6_detach(struct socket *so)
574{
575 struct inpcb *inp;
576
577 inp = sotoinpcb(so);
578 if (inp == 0)
579 panic("rip6_detach");
580 /* xxx: RSVP */
581 if (so == ip6_mrouter)
582 ip6_mrouter_done();
583 if (inp->in6p_icmp6filt) {
584 FREE(inp->in6p_icmp6filt, M_PCB);
585 inp->in6p_icmp6filt = NULL;
586 }
587 in6_pcbdetach(inp);
588 return 0;
589}
590
591static int
592rip6_abort(struct socket *so)
593{
594 soisdisconnected(so);
595 return rip6_detach(so);
596}
597
598static int
599rip6_disconnect(struct socket *so)
600{
601 struct inpcb *inp = sotoinpcb(so);
602
603 if ((so->so_state & SS_ISCONNECTED) == 0)
604 return ENOTCONN;
605 inp->in6p_faddr = in6addr_any;
606 return rip6_abort(so);
607}
608
609static int
610rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
611{
612 struct inpcb *inp = sotoinpcb(so);
613 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
614 struct ifaddr *ia = NULL;
615
616 if (nam->sa_len != sizeof(*addr))
617 return EINVAL;
618
619 if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6)
620 return EADDRNOTAVAIL;
621#ifdef ENABLE_DEFAULT_SCOPE
622 if (addr->sin6_scope_id == 0) { /* not change if specified */
623 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
624 }
625#endif
626 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
627 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0)
628 return EADDRNOTAVAIL;
629 if (ia &&
630 ((struct in6_ifaddr *)ia)->ia6_flags &
631 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
632 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
633 return(EADDRNOTAVAIL);
634 }
635 inp->in6p_laddr = addr->sin6_addr;
636 return 0;
637}
638
639static int
640rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
641{
642 struct inpcb *inp = sotoinpcb(so);
643 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
644 struct in6_addr *in6a = NULL;
645 int error = 0;
646#ifdef ENABLE_DEFAULT_SCOPE
647 struct sockaddr_in6 tmp;
648#endif
649
650 if (nam->sa_len != sizeof(*addr))
651 return EINVAL;
652 if (TAILQ_EMPTY(&ifnet))
653 return EADDRNOTAVAIL;
654 if (addr->sin6_family != AF_INET6)
655 return EAFNOSUPPORT;
656#ifdef ENABLE_DEFAULT_SCOPE
657 if (addr->sin6_scope_id == 0) { /* not change if specified */
658 /* avoid overwrites */
659 tmp = *addr;
660 addr = &tmp;
661 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
662 }
663#endif
664 /* Source address selection. XXX: need pcblookup? */
665 in6a = in6_selectsrc(addr, inp->in6p_outputopts,
666 inp->in6p_moptions, &inp->in6p_route,
667 &inp->in6p_laddr, &error);
668 if (in6a == NULL)
669 return (error ? error : EADDRNOTAVAIL);
670 inp->in6p_laddr = *in6a;
671 inp->in6p_faddr = addr->sin6_addr;
672 soisconnected(so);
673 return 0;
674}
675
676static int
677rip6_shutdown(struct socket *so)
678{
679 socantsendmore(so);
680 return 0;
681}
682
683static int
684rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
685 struct mbuf *control, struct thread *td)
686{
687 struct inpcb *inp = sotoinpcb(so);
688 struct sockaddr_in6 tmp;
689 struct sockaddr_in6 *dst;
690
691 /* always copy sockaddr to avoid overwrites */
692 if (so->so_state & SS_ISCONNECTED) {
693 if (nam) {
694 m_freem(m);
695 return EISCONN;
696 }
697 /* XXX */
698 bzero(&tmp, sizeof(tmp));
699 tmp.sin6_family = AF_INET6;
700 tmp.sin6_len = sizeof(struct sockaddr_in6);
701 bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
702 sizeof(struct in6_addr));
703 dst = &tmp;
704 } else {
705 if (nam == NULL) {
706 m_freem(m);
707 return ENOTCONN;
708 }
709 tmp = *(struct sockaddr_in6 *)nam;
710 dst = &tmp;
711 }
712#ifdef ENABLE_DEFAULT_SCOPE
713 if (dst->sin6_scope_id == 0) { /* not change if specified */
714 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
715 }
716#endif
717 return rip6_output(m, so, dst, control);
718}
719
720struct pr_usrreqs rip6_usrreqs = {
721 rip6_abort, pru_accept_notsupp, rip6_attach, rip6_bind, rip6_connect,
722 pru_connect2_notsupp, in6_control, rip6_detach, rip6_disconnect,
723 pru_listen_notsupp, in6_setpeeraddr, pru_rcvd_notsupp,
724 pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown,
725 in6_setsockaddr, sosend, soreceive, sopoll
726};
| 450 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
451 if (oifp)
452 icmp6_ifoutstat_inc(oifp, type, code);
453 icmp6stat.icp6s_outhist[type]++;
454 } else
455 rip6stat.rip6s_opackets++;
456
457 goto freectl;
458
459 bad:
460 if (m)
461 m_freem(m);
462
463 freectl:
464 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt)
465 RTFREE(optp->ip6po_route.ro_rt);
466 if (control) {
467 if (optp == &opt)
468 ip6_clearpktopts(optp, 0, -1);
469 m_freem(control);
470 }
471 return(error);
472}
473
474/*
475 * Raw IPv6 socket option processing.
476 */
477int
478rip6_ctloutput(so, sopt)
479 struct socket *so;
480 struct sockopt *sopt;
481{
482 int error;
483
484 if (sopt->sopt_level == IPPROTO_ICMPV6)
485 /*
486 * XXX: is it better to call icmp6_ctloutput() directly
487 * from protosw?
488 */
489 return(icmp6_ctloutput(so, sopt));
490 else if (sopt->sopt_level != IPPROTO_IPV6)
491 return (EINVAL);
492
493 error = 0;
494
495 switch (sopt->sopt_dir) {
496 case SOPT_GET:
497 switch (sopt->sopt_name) {
498 case MRT6_INIT:
499 case MRT6_DONE:
500 case MRT6_ADD_MIF:
501 case MRT6_DEL_MIF:
502 case MRT6_ADD_MFC:
503 case MRT6_DEL_MFC:
504 case MRT6_PIM:
505 error = ip6_mrouter_get(so, sopt);
506 break;
507 default:
508 error = ip6_ctloutput(so, sopt);
509 break;
510 }
511 break;
512
513 case SOPT_SET:
514 switch (sopt->sopt_name) {
515 case MRT6_INIT:
516 case MRT6_DONE:
517 case MRT6_ADD_MIF:
518 case MRT6_DEL_MIF:
519 case MRT6_ADD_MFC:
520 case MRT6_DEL_MFC:
521 case MRT6_PIM:
522 error = ip6_mrouter_set(so, sopt);
523 break;
524 default:
525 error = ip6_ctloutput(so, sopt);
526 break;
527 }
528 break;
529 }
530
531 return (error);
532}
533
534static int
535rip6_attach(struct socket *so, int proto, struct thread *td)
536{
537 struct inpcb *inp;
538 int error, s;
539
540 inp = sotoinpcb(so);
541 if (inp)
542 panic("rip6_attach");
543 if (td && (error = suser(td)) != 0)
544 return error;
545
546 error = soreserve(so, rip_sendspace, rip_recvspace);
547 if (error)
548 return error;
549 s = splnet();
550 error = in_pcballoc(so, &ripcbinfo, td);
551 splx(s);
552 if (error)
553 return error;
554 inp = (struct inpcb *)so->so_pcb;
555 inp->inp_vflag |= INP_IPV6;
556 inp->in6p_ip6_nxt = (long)proto;
557 inp->in6p_hops = -1; /* use kernel default */
558 inp->in6p_cksum = -1;
559 MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *,
560 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
561 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
562 return 0;
563}
564
565static int
566rip6_detach(struct socket *so)
567{
568 struct inpcb *inp;
569
570 inp = sotoinpcb(so);
571 if (inp == 0)
572 panic("rip6_detach");
573 /* xxx: RSVP */
574 if (so == ip6_mrouter)
575 ip6_mrouter_done();
576 if (inp->in6p_icmp6filt) {
577 FREE(inp->in6p_icmp6filt, M_PCB);
578 inp->in6p_icmp6filt = NULL;
579 }
580 in6_pcbdetach(inp);
581 return 0;
582}
583
584static int
585rip6_abort(struct socket *so)
586{
587 soisdisconnected(so);
588 return rip6_detach(so);
589}
590
591static int
592rip6_disconnect(struct socket *so)
593{
594 struct inpcb *inp = sotoinpcb(so);
595
596 if ((so->so_state & SS_ISCONNECTED) == 0)
597 return ENOTCONN;
598 inp->in6p_faddr = in6addr_any;
599 return rip6_abort(so);
600}
601
602static int
603rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
604{
605 struct inpcb *inp = sotoinpcb(so);
606 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
607 struct ifaddr *ia = NULL;
608
609 if (nam->sa_len != sizeof(*addr))
610 return EINVAL;
611
612 if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6)
613 return EADDRNOTAVAIL;
614#ifdef ENABLE_DEFAULT_SCOPE
615 if (addr->sin6_scope_id == 0) { /* not change if specified */
616 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
617 }
618#endif
619 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
620 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0)
621 return EADDRNOTAVAIL;
622 if (ia &&
623 ((struct in6_ifaddr *)ia)->ia6_flags &
624 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
625 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
626 return(EADDRNOTAVAIL);
627 }
628 inp->in6p_laddr = addr->sin6_addr;
629 return 0;
630}
631
632static int
633rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
634{
635 struct inpcb *inp = sotoinpcb(so);
636 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
637 struct in6_addr *in6a = NULL;
638 int error = 0;
639#ifdef ENABLE_DEFAULT_SCOPE
640 struct sockaddr_in6 tmp;
641#endif
642
643 if (nam->sa_len != sizeof(*addr))
644 return EINVAL;
645 if (TAILQ_EMPTY(&ifnet))
646 return EADDRNOTAVAIL;
647 if (addr->sin6_family != AF_INET6)
648 return EAFNOSUPPORT;
649#ifdef ENABLE_DEFAULT_SCOPE
650 if (addr->sin6_scope_id == 0) { /* not change if specified */
651 /* avoid overwrites */
652 tmp = *addr;
653 addr = &tmp;
654 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
655 }
656#endif
657 /* Source address selection. XXX: need pcblookup? */
658 in6a = in6_selectsrc(addr, inp->in6p_outputopts,
659 inp->in6p_moptions, &inp->in6p_route,
660 &inp->in6p_laddr, &error);
661 if (in6a == NULL)
662 return (error ? error : EADDRNOTAVAIL);
663 inp->in6p_laddr = *in6a;
664 inp->in6p_faddr = addr->sin6_addr;
665 soisconnected(so);
666 return 0;
667}
668
669static int
670rip6_shutdown(struct socket *so)
671{
672 socantsendmore(so);
673 return 0;
674}
675
676static int
677rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
678 struct mbuf *control, struct thread *td)
679{
680 struct inpcb *inp = sotoinpcb(so);
681 struct sockaddr_in6 tmp;
682 struct sockaddr_in6 *dst;
683
684 /* always copy sockaddr to avoid overwrites */
685 if (so->so_state & SS_ISCONNECTED) {
686 if (nam) {
687 m_freem(m);
688 return EISCONN;
689 }
690 /* XXX */
691 bzero(&tmp, sizeof(tmp));
692 tmp.sin6_family = AF_INET6;
693 tmp.sin6_len = sizeof(struct sockaddr_in6);
694 bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
695 sizeof(struct in6_addr));
696 dst = &tmp;
697 } else {
698 if (nam == NULL) {
699 m_freem(m);
700 return ENOTCONN;
701 }
702 tmp = *(struct sockaddr_in6 *)nam;
703 dst = &tmp;
704 }
705#ifdef ENABLE_DEFAULT_SCOPE
706 if (dst->sin6_scope_id == 0) { /* not change if specified */
707 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
708 }
709#endif
710 return rip6_output(m, so, dst, control);
711}
712
713struct pr_usrreqs rip6_usrreqs = {
714 rip6_abort, pru_accept_notsupp, rip6_attach, rip6_bind, rip6_connect,
715 pru_connect2_notsupp, in6_control, rip6_detach, rip6_disconnect,
716 pru_listen_notsupp, in6_setpeeraddr, pru_rcvd_notsupp,
717 pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown,
718 in6_setsockaddr, sosend, soreceive, sopoll
719};
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