bsd/netinet6/raw_ip6.c

   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
  30 /*
  31  * Copyright (c) 1982, 1986, 1988, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)raw_ip.c    8.2 (Berkeley) 1/4/94
  63  */
  64 #if BSD310
  65 #include "opt_inet.h"
  66 #endif
  67
  68 #include <stddef.h>
  69
  70 #include <sys/param.h>
  71 #include <sys/malloc.h>
  72 #include <sys/proc.h>
  73 #include <sys/mbuf.h>
  74 #include <sys/socket.h>
  75 #include <sys/protosw.h>
  76 #include <sys/socketvar.h>
  77 #include <sys/errno.h>
  78 #include <sys/systm.h>
  79
  80 #include <net/if.h>
  81 #include <net/route.h>
  82 #include <net/if_types.h>
  83
  84 #include <netinet/in.h>
  85 #include <netinet/in_var.h>
  86 #include <netinet/in_systm.h>
  87 #include <netinet/ip6.h>
  88 #include <netinet6/ip6_var.h>
  89 #include <netinet6/ip6_mroute.h>
  90 #include <netinet/icmp6.h>
  91 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
  92 #include <netinet/in_pcb.h>
  93 #endif
  94 #include <netinet6/in6_pcb.h>
  95 #include <netinet6/nd6.h>
  96 #include <netinet6/ip6protosw.h>
  97
  98 #if IPSEC
  99 #include <netinet6/ipsec.h>
 100 #endif /*IPSEC*/
 101
 102
 103 #include "faith.h"
 104
 105 #define satosin6(sa)    ((struct sockaddr_in6 *)(sa))
 106 #define ifatoia6(ifa)   ((struct in6_ifaddr *)(ifa))
 107
 108 /*
 109  * Raw interface to IP6 protocol.
 110  */
 111
 112 extern struct inpcbhead ripcb;
 113 extern struct inpcbinfo ripcbinfo;
 114 extern u_long   rip_sendspace;
 115 extern u_long   rip_recvspace;
 116
 117 /*
 118  * Setup generic address and protocol structures
 119  * for raw_input routine, then pass them along with
 120  * mbuf chain.
 121  */
 122 int
 123 rip6_input(mp, offp, proto)
 124         struct  mbuf **mp;
 125         int     *offp, proto;
 126 {
 127         struct mbuf *m = *mp;
 128         register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
 129         register struct inpcb *in6p;
 130         struct inpcb *last = 0;
 131         struct ip6_recvpktopts opts;
 132         struct sockaddr_in6 rip6src;
 133
 134 #if defined(NFAITH) && 0 < NFAITH
 135         if (m->m_pkthdr.rcvif) {
 136                 if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) {
 137                         /* XXX send icmp6 host/port unreach? */
 138                         m_freem(m);
 139                         return IPPROTO_DONE;
 140                 }
 141         }
 142 #endif
 143         init_sin6(&rip6src, m); /* general init */
 144         bzero(&opts, sizeof(opts));
 145
 146         LIST_FOREACH(in6p, &ripcb, inp_list) {
 147                 if ((in6p->in6p_vflag & INP_IPV6) == NULL)
 148                         continue;
 149                 if (in6p->in6p_ip6_nxt &&
 150                     in6p->in6p_ip6_nxt != proto)
 151                         continue;
 152                 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
 153                     !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
 154                         continue;
 155                 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
 156                     !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
 157                         continue;
 158                 if (in6p->in6p_cksum != -1
 159                     && in6_cksum(m, ip6->ip6_nxt, *offp,
 160                                  m->m_pkthdr.len - *offp)) {
 161                         /* XXX bark something */
 162                         continue;
 163                 }
 164                 if (last) {
 165                         struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
 166                         if (n) {
 167                                 if (last->in6p_flags & IN6P_CONTROLOPTS ||
 168                                     last->in6p_socket->so_options & SO_TIMESTAMP)
 169                                         ip6_savecontrol(last, ip6, n, &opts,
 170                                                         NULL);
 171                                 /* strip intermediate headers */
 172                                 m_adj(n, *offp);
 173                                 if (sbappendaddr(&last->in6p_socket->so_rcv,
 174                                                 (struct sockaddr *)&rip6src,
 175                                                  n, opts.head) == 0) {
 176                                         /* should notify about lost packet */
 177                                         m_freem(n);
 178                                         if (opts.head)
 179                                                 m_freem(opts.head);
 180                                 } else
 181                                         sorwakeup(last->in6p_socket);
 182                                 bzero(&opts, sizeof(opts));
 183                         }
 184                 }
 185                 last = in6p;
 186         }
 187         if (last) {
 188                 if (last->in6p_flags & IN6P_CONTROLOPTS ||
 189                     last->in6p_socket->so_options & SO_TIMESTAMP)
 190                         ip6_savecontrol(last, ip6, m, &opts, NULL);
 191                 /* strip intermediate headers */
 192                 m_adj(m, *offp);
 193                 if (sbappendaddr(&last->in6p_socket->so_rcv,
 194                                 (struct sockaddr *)&rip6src, m, opts.head) == 0) {
 195                         m_freem(m);
 196                         if (opts.head)
 197                                 m_freem(opts.head);
 198                 } else
 199                         sorwakeup(last->in6p_socket);
 200         } else {
 201                 if (proto == IPPROTO_NONE)
 202                         m_freem(m);
 203                 else {
 204                         char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
 205                         icmp6_error(m, ICMP6_PARAM_PROB,
 206                                     ICMP6_PARAMPROB_NEXTHEADER,
 207                                     prvnxtp - mtod(m, char *));
 208                 }
 209                 ip6stat.ip6s_delivered--;
 210         }
 211         return IPPROTO_DONE;
 212 }
 213
 214 void
 215 rip6_ctlinput(cmd, sa, d)
 216         int cmd;
 217         struct sockaddr *sa;
 218         void *d;
 219 {
 220         struct sockaddr_in6 sa6;
 221         struct ip6_hdr *ip6;
 222         struct mbuf *m;
 223         int off = 0;
 224         void (*notify) __P((struct inpcb *, int)) = in6_rtchange;
 225
 226         if (sa->sa_family != AF_INET6 ||
 227             sa->sa_len != sizeof(struct sockaddr_in6))
 228                 return;
 229
 230         if ((unsigned)cmd >= PRC_NCMDS)
 231                 return;
 232         if (PRC_IS_REDIRECT(cmd))
 233                 notify = in6_rtchange, d = NULL;
 234         else if (cmd == PRC_HOSTDEAD)
 235                 d = NULL;
 236         else if (inet6ctlerrmap[cmd] == 0)
 237                 return;
 238
 239         /* if the parameter is from icmp6, decode it. */
 240         if (d != NULL) {
 241                 struct ip6ctlparam *ip6cp = (struct ip6ctlparam *)d;
 242                 m = ip6cp->ip6c_m;
 243                 ip6 = ip6cp->ip6c_ip6;
 244                 off = ip6cp->ip6c_off;
 245         } else {
 246                 m = NULL;
 247                 ip6 = NULL;
 248         }
 249
 250         /* translate addresses into internal form */
 251         sa6 = *(struct sockaddr_in6 *)sa;
 252         if (IN6_IS_ADDR_LINKLOCAL(&sa6.sin6_addr) && m && m->m_pkthdr.rcvif)
 253                 sa6.sin6_addr.s6_addr16[1] = htons(m->m_pkthdr.rcvif->if_index);
 254
 255         if (ip6) {
 256                 /*
 257                  * XXX: We assume that when IPV6 is non NULL,
 258                  * M and OFF are valid.
 259                  */
 260                 struct in6_addr s;
 261
 262                 /* translate addresses into internal form */
 263                 memcpy(&s, &ip6->ip6_src, sizeof(s));
 264                 if (IN6_IS_ADDR_LINKLOCAL(&s))
 265                         s.s6_addr16[1] = htons(m->m_pkthdr.rcvif->if_index);
 266
 267                 (void) in6_pcbnotify(&ripcb, (struct sockaddr *)&sa6,
 268                                      0, &s, 0, cmd, notify);
 269         } else
 270                 (void) in6_pcbnotify(&ripcb, (struct sockaddr *)&sa6, 0,
 271                                      &zeroin6_addr, 0, cmd, notify);
 272 }
 273
 274 /*
 275  * Generate IPv6 header and pass packet to ip6_output.
 276  * Tack on options user may have setup with control call.
 277  */
 278 int
 279 rip6_output(m, so, dstsock, control)
 280         register struct mbuf *m;
 281         struct socket *so;
 282         struct sockaddr_in6 *dstsock;
 283         struct mbuf *control;
 284 {
 285         struct in6_addr *dst;
 286         struct ip6_hdr *ip6;
 287         struct inpcb *in6p;
 288         u_int   plen = m->m_pkthdr.len;
 289         int error = 0;
 290         struct ip6_pktopts opt, *optp = 0;
 291         struct ifnet *oifp = NULL;
 292         int type = 0, code = 0;         /* for ICMPv6 output statistics only */
 293         int priv = 0;
 294
 295         in6p = sotoin6pcb(so);
 296
 297         priv = 0;
 298 #if !defined(__APPLE__)
 299    {
 300         struct proc *p = current_proc();        /* XXX */
 301
 302         if (p && !suser(p->p_ucred, &p->p_acflag))
 303                 priv = 1;
 304     }
 305 #else
 306         if ((so->so_state & SS_PRIV) != 0)
 307                 priv = 1;
 308 #endif
 309         dst = &dstsock->sin6_addr;
 310         if (control) {
 311                 if ((error = ip6_setpktoptions(control, &opt, priv, 0)) != 0)
 312                         goto bad;
 313                 optp = &opt;
 314         } else
 315                 optp = in6p->in6p_outputopts;
 316
 317         /*
 318          * For an ICMPv6 packet, we should know its type and code
 319          * to update statistics.
 320          */
 321         if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
 322                 struct icmp6_hdr *icmp6;
 323                 if (m->m_len < sizeof(struct icmp6_hdr) &&
 324                     (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
 325                         error = ENOBUFS;
 326                         goto bad;
 327                 }
 328                 icmp6 = mtod(m, struct icmp6_hdr *);
 329                 type = icmp6->icmp6_type;
 330                 code = icmp6->icmp6_code;
 331         }
 332
 333         M_PREPEND(m, sizeof(*ip6), M_WAIT);
 334         ip6 = mtod(m, struct ip6_hdr *);
 335
 336         /*
 337          * Next header might not be ICMP6 but use its pseudo header anyway.
 338          */
 339         ip6->ip6_dst = *dst;
 340
 341         /*
 342          * If the scope of the destination is link-local, embed the interface
 343          * index in the address.
 344          *
 345          * XXX advanced-api value overrides sin6_scope_id
 346          */
 347         if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
 348                 struct in6_pktinfo *pi;
 349
 350                 /*
 351                  * XXX Boundary check is assumed to be already done in
 352                  * ip6_setpktoptions().
 353                  */
 354                 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
 355                         ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
 356                         oifp = ifindex2ifnet[pi->ipi6_ifindex];
 357                 }
 358                 else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
 359                          in6p->in6p_moptions &&
 360                          in6p->in6p_moptions->im6o_multicast_ifp) {
 361                         oifp = in6p->in6p_moptions->im6o_multicast_ifp;
 362                         ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
 363                 } else if (dstsock->sin6_scope_id) {
 364                         /* boundary check */
 365                         if (dstsock->sin6_scope_id < 0
 366                          || if_index < dstsock->sin6_scope_id) {
 367                                 error = ENXIO;  /* XXX EINVAL? */
 368                                 goto bad;
 369                         }
 370                         ip6->ip6_dst.s6_addr16[1]
 371                                 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/
 372                 }
 373         }
 374
 375         /*
 376          * Source address selection.
 377          */
 378         {
 379                 struct in6_addr *in6a;
 380
 381                 if ((in6a = in6_selectsrc(dstsock, optp,
 382                                           in6p->in6p_moptions,
 383                                           &in6p->in6p_route,
 384                                           &in6p->in6p_laddr,
 385                                           &error)) == 0) {
 386                         if (error == 0)
 387                                 error = EADDRNOTAVAIL;
 388                         goto bad;
 389                 }
 390                 ip6->ip6_src = *in6a;
 391                 if (in6p->in6p_route.ro_rt)
 392                         oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index];
 393         }
 394
 395         ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK;
 396         ip6->ip6_vfc  |= IPV6_VERSION;
 397 #if 0                           /* ip6_plen will be filled in ip6_output. */
 398         ip6->ip6_plen  = htons((u_short)plen);
 399 #endif
 400         ip6->ip6_nxt = in6p->in6p_ip6_nxt;
 401         ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
 402
 403         if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
 404             in6p->in6p_cksum != -1) {
 405                 struct mbuf *n;
 406                 int off;
 407                 u_int16_t *p;
 408
 409 #define offsetof(type, member)  ((size_t)(&((type *)0)->member)) /* XXX */
 410
 411                 /* compute checksum */
 412                 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
 413                         off = offsetof(struct icmp6_hdr, icmp6_cksum);
 414                 else
 415                         off = in6p->in6p_cksum;
 416                 if (plen < off + 1) {
 417                         error = EINVAL;
 418                         goto bad;
 419                 }
 420                 off += sizeof(struct ip6_hdr);
 421
 422                 n = m;
 423                 while (n && n->m_len <= off) {
 424                         off -= n->m_len;
 425                         n = n->m_next;
 426                 }
 427                 if (!n)
 428                         goto bad;
 429                 p = (u_int16_t *)(mtod(n, caddr_t) + off);
 430                 *p = 0;
 431                 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
 432         }
 433
 434 #if IPSEC
 435         ipsec_setsocket(m, so);
 436 #endif /*IPSEC*/
 437
 438         error = ip6_output(m, optp, &in6p->in6p_route, 0, in6p->in6p_moptions,
 439                            &oifp);
 440         if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
 441                 if (oifp)
 442                         icmp6_ifoutstat_inc(oifp, type, code);
 443                 icmp6stat.icp6s_outhist[type]++;
 444         }
 445
 446         goto freectl;
 447
 448  bad:
 449         if (m)
 450                 m_freem(m);
 451
 452  freectl:
 453         if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt)
 454                 RTFREE(optp->ip6po_route.ro_rt);
 455         if (control) {
 456                 if (optp == &opt)
 457                         ip6_clearpktopts(optp, 0, -1);
 458                 m_freem(control);
 459         }
 460         return(error);
 461 }
 462
 463 /*
 464  * Raw IPv6 socket option processing.
 465  */
 466 int
 467 rip6_ctloutput(so, sopt)
 468         struct socket *so;
 469         struct sockopt *sopt;
 470 {
 471         int error;
 472
 473         if (sopt->sopt_level == IPPROTO_ICMPV6)
 474                 /*
 475                  * XXX: is it better to call icmp6_ctloutput() directly
 476                  * from protosw?
 477                  */
 478                 return(icmp6_ctloutput(so, sopt));
 479         else if (sopt->sopt_level != IPPROTO_IPV6)
 480                 return (EINVAL);
 481
 482         error = 0;
 483
 484         switch (sopt->sopt_dir) {
 485         case SOPT_GET:
 486                 switch (sopt->sopt_name) {
 487                 case MRT6_INIT:
 488                 case MRT6_DONE:
 489                 case MRT6_ADD_MIF:
 490                 case MRT6_DEL_MIF:
 491                 case MRT6_ADD_MFC:
 492                 case MRT6_DEL_MFC:
 493                 case MRT6_PIM:
 494                         error = ip6_mrouter_get(so, sopt);
 495                         break;
 496                 default:
 497                         error = ip6_ctloutput(so, sopt);
 498                         break;
 499                 }
 500                 break;
 501
 502         case SOPT_SET:
 503                 switch (sopt->sopt_name) {
 504                 case MRT6_INIT:
 505                 case MRT6_DONE:
 506                 case MRT6_ADD_MIF:
 507                 case MRT6_DEL_MIF:
 508                 case MRT6_ADD_MFC:
 509                 case MRT6_DEL_MFC:
 510                 case MRT6_PIM:
 511                         error = ip6_mrouter_set(so, sopt);
 512                         break;
 513                 default:
 514                         error = ip6_ctloutput(so, sopt);
 515                         break;
 516                 }
 517                 break;
 518         }
 519
 520         return (error);
 521 }
 522
 523 static int
 524 rip6_attach(struct socket *so, int proto, struct proc *p)
 525 {
 526         struct inpcb *inp;
 527         int error, s;
 528
 529         inp = sotoinpcb(so);
 530         if (inp)
 531                 panic("rip6_attach");
 532         if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
 533                 return error;
 534
 535         if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
 536                 error = soreserve(so, rip_sendspace, rip_recvspace);
 537                 if (error)
 538                         return error;
 539         }
 540         s = splnet();
 541         error = in_pcballoc(so, &ripcbinfo, p);
 542         splx(s);
 543         if (error)
 544                 return error;
 545         inp = (struct inpcb *)so->so_pcb;
 546         inp->inp_vflag |= INP_IPV6;
 547         inp->in6p_ip6_nxt = (long)proto;
 548         inp->in6p_hops = -1;    /* use kernel default */
 549         inp->in6p_cksum = -1;
 550 #if IPSEC
 551         error = ipsec_init_policy(so, &inp->in6p_sp);
 552         if (error != 0) {
 553                 in6_pcbdetach(inp);
 554                 return (error);
 555         }
 556 #endif /*IPSEC*/
 557         MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *,
 558                sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
 559         ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
 560         return 0;
 561 }
 562
 563 static int
 564 rip6_detach(struct socket *so)
 565 {
 566         struct inpcb *inp;
 567
 568         inp = sotoinpcb(so);
 569         if (inp == 0)
 570                 panic("rip6_detach");
 571         if (so == ip6_mrouter)
 572                 ip6_mrouter_done();
 573         /* xxx: RSVP */
 574         if (inp->in6p_icmp6filt) {
 575                 FREE(inp->in6p_icmp6filt, M_PCB);
 576                 inp->in6p_icmp6filt = NULL;
 577         }
 578         in6_pcbdetach(inp);
 579         return 0;
 580 }
 581
 582 static int
 583 rip6_abort(struct socket *so)
 584 {
 585         soisdisconnected(so);
 586         return rip6_detach(so);
 587 }
 588
 589 static int
 590 rip6_disconnect(struct socket *so)
 591 {
 592         struct inpcb *inp = sotoinpcb(so);
 593
 594         if ((so->so_state & SS_ISCONNECTED) == 0)
 595                 return ENOTCONN;
 596         inp->in6p_faddr = in6addr_any;
 597         return rip6_abort(so);
 598 }
 599
 600 static int
 601 rip6_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
 602 {
 603         struct inpcb *inp = sotoinpcb(so);
 604         struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
 605         struct ifaddr *ia = NULL;
 606
 607         if (nam->sa_len != sizeof(*addr))
 608                 return EINVAL;
 609
 610         if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6)
 611                 return EADDRNOTAVAIL;
 612         if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
 613             (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0)
 614                 return EADDRNOTAVAIL;
 615         if (ia &&
 616             ((struct in6_ifaddr *)ia)->ia6_flags &
 617             (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
 618              IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
 619                 return(EADDRNOTAVAIL);
 620         }
 621         inp->in6p_laddr = addr->sin6_addr;
 622         return 0;
 623 }
 624
 625 static int
 626 rip6_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
 627 {
 628         struct inpcb *inp = sotoinpcb(so);
 629         struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
 630         struct in6_addr *in6a = NULL;
 631         int error = 0;
 632
 633         if (nam->sa_len != sizeof(*addr))
 634                 return EINVAL;
 635         if (TAILQ_EMPTY(&ifnet))
 636                 return EADDRNOTAVAIL;
 637         if (addr->sin6_family != AF_INET6)
 638                 return EAFNOSUPPORT;
 639
 640         /* Source address selection. XXX: need pcblookup? */
 641         in6a = in6_selectsrc(addr, inp->in6p_outputopts,
 642                              inp->in6p_moptions, &inp->in6p_route,
 643                              &inp->in6p_laddr, &error);
 644         if (in6a == NULL)
 645                 return (error ? error : EADDRNOTAVAIL);
 646         inp->in6p_laddr = *in6a;
 647         inp->in6p_faddr = addr->sin6_addr;
 648         soisconnected(so);
 649         return 0;
 650 }
 651
 652 static int
 653 rip6_shutdown(struct socket *so)
 654 {
 655         socantsendmore(so);
 656         return 0;
 657 }
 658
 659 static int
 660 rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
 661          struct mbuf *control, struct proc *p)
 662 {
 663         struct inpcb *inp = sotoinpcb(so);
 664         struct sockaddr_in6 tmp;
 665         struct sockaddr_in6 *dst;
 666
 667         if (so->so_state & SS_ISCONNECTED) {
 668                 if (nam) {
 669                         m_freem(m);
 670                         return EISCONN;
 671                 }
 672                 /* XXX */
 673                 bzero(&tmp, sizeof(tmp));
 674                 tmp.sin6_family = AF_INET6;
 675                 tmp.sin6_len = sizeof(struct sockaddr_in6);
 676                 bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
 677                       sizeof(struct in6_addr));
 678                 dst = &tmp;
 679         } else {
 680                 if (nam == NULL) {
 681                         m_freem(m);
 682                         return ENOTCONN;
 683                 }
 684                 dst = (struct sockaddr_in6 *)nam;
 685         }
 686         return rip6_output(m, so, dst, control);
 687 }
 688
 689 struct pr_usrreqs rip6_usrreqs = {
 690         rip6_abort, pru_accept_notsupp, rip6_attach, rip6_bind, rip6_connect,
 691         pru_connect2_notsupp, in6_control, rip6_detach, rip6_disconnect,
 692         pru_listen_notsupp, in6_setpeeraddr, pru_rcvd_notsupp,
 693         pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown,
 694         in6_setsockaddr, sosend, soreceive, sopoll
 695 };