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: src/sys/netinet6/raw_ip6.c,v 1.7.2.7 2003/01/24 05:11:35 sam Exp $ 30 * $DragonFly: src/sys/netinet6/raw_ip6.c,v 1.9 2003/11/09 02:22:36 dillon Exp $ 31 */ 32 33 /* 34 * Copyright (c) 1982, 1986, 1988, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)raw_ip.c 8.2 (Berkeley) 1/4/94 66 */ 67 68 #include "opt_ipsec.h" 69 #include "opt_inet6.h" 70 71 #include <sys/param.h> 72 #include <sys/malloc.h> 73 #include <sys/proc.h> 74 #include <sys/mbuf.h> 75 #include <sys/socket.h> 76 #include <sys/protosw.h> 77 #include <sys/socketvar.h> 78 #include <sys/errno.h> 79 #include <sys/systm.h> 80 81 #include <net/if.h> 82 #include <net/route.h> 83 #include <net/if_types.h> 84 85 #include <netinet/in.h> 86 #include <netinet/in_var.h> 87 #include <netinet/in_systm.h> 88 #include <netinet/ip6.h> 89 #include <netinet6/ip6_var.h> 90 #include <netinet6/ip6_mroute.h> 91 #include <netinet/icmp6.h> 92 #include <netinet/in_pcb.h> 93 #include <netinet6/in6_pcb.h> 94 #include <netinet6/nd6.h> 95 #include <netinet6/ip6protosw.h> 96 #ifdef ENABLE_DEFAULT_SCOPE 97 #include <netinet6/scope6_var.h> 98 #endif 99 #include <netinet6/raw_ip6.h> 100 101 #ifdef IPSEC 102 #include <netinet6/ipsec.h> 103 #include <netinet6/ipsec6.h> 104 #endif /*IPSEC*/ 105 106 #ifdef FAST_IPSEC 107 #include "ipsec.h" 108 #include "ipsec6.h" 109 #endif /* FAST_IPSEC */ 110 111 #include <machine/stdarg.h> 112 113 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 114 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 115 116 /* 117 * Raw interface to IP6 protocol. 118 */ 119 120 extern struct inpcbhead ripcb; 121 extern struct inpcbinfo ripcbinfo; 122 extern u_long rip_sendspace; 123 extern u_long rip_recvspace; 124 125 struct rip6stat rip6stat; 126 127 /* 128 * Setup generic address and protocol structures 129 * for raw_input routine, then pass them along with 130 * mbuf chain. 131 */ 132 int 133 rip6_input(mp, offp, proto) 134 struct mbuf **mp; 135 int *offp, proto; 136 { 137 struct mbuf *m = *mp; 138 struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); 139 struct inpcb *in6p; 140 struct inpcb *last = 0; 141 struct mbuf *opts = NULL; 142 struct sockaddr_in6 rip6src; 143 144 rip6stat.rip6s_ipackets++; 145 146 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) { 147 /* XXX send icmp6 host/port unreach? */ 148 m_freem(m); 149 return IPPROTO_DONE; 150 } 151 152 init_sin6(&rip6src, m); /* general init */ 153 154 LIST_FOREACH(in6p, &ripcb, inp_list) { 155 if ((in6p->in6p_vflag & INP_IPV6) == 0) 156 continue; 157 if (in6p->in6p_ip6_nxt && 158 in6p->in6p_ip6_nxt != proto) 159 continue; 160 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) && 161 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) 162 continue; 163 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) && 164 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src)) 165 continue; 166 if (in6p->in6p_cksum != -1) { 167 rip6stat.rip6s_isum++; 168 if (in6_cksum(m, ip6->ip6_nxt, *offp, 169 m->m_pkthdr.len - *offp)) { 170 rip6stat.rip6s_badsum++; 171 continue; 172 } 173 } 174 if (last) { 175 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); 176 177 #ifdef IPSEC 178 /* 179 * Check AH/ESP integrity. 180 */ 181 if (n && ipsec6_in_reject_so(n, last->inp_socket)) { 182 m_freem(n); 183 ipsec6stat.in_polvio++; 184 /* do not inject data into pcb */ 185 } else 186 #endif /*IPSEC*/ 187 #ifdef FAST_IPSEC 188 /* 189 * Check AH/ESP integrity. 190 */ 191 if (n && ipsec6_in_reject(n, last)) { 192 m_freem(n); 193 /* do not inject data into pcb */ 194 } else 195 #endif /*FAST_IPSEC*/ 196 if (n) { 197 if (last->in6p_flags & IN6P_CONTROLOPTS || 198 last->in6p_socket->so_options & SO_TIMESTAMP) 199 ip6_savecontrol(last, &opts, ip6, n); 200 /* strip intermediate headers */ 201 m_adj(n, *offp); 202 if (sbappendaddr(&last->in6p_socket->so_rcv, 203 (struct sockaddr *)&rip6src, 204 n, opts) == 0) { 205 m_freem(n); 206 if (opts) 207 m_freem(opts); 208 rip6stat.rip6s_fullsock++; 209 } else 210 sorwakeup(last->in6p_socket); 211 opts = NULL; 212 } 213 } 214 last = in6p; 215 } 216 #ifdef IPSEC 217 /* 218 * Check AH/ESP integrity. 219 */ 220 if (last && ipsec6_in_reject_so(m, last->inp_socket)) { 221 m_freem(m); 222 ipsec6stat.in_polvio++; 223 ip6stat.ip6s_delivered--; 224 /* do not inject data into pcb */ 225 } else 226 #endif /*IPSEC*/ 227 #ifdef FAST_IPSEC 228 /* 229 * Check AH/ESP integrity. 230 */ 231 if (last && ipsec6_in_reject(m, last)) { 232 m_freem(m); 233 ip6stat.ip6s_delivered--; 234 /* do not inject data into pcb */ 235 } else 236 #endif /*FAST_IPSEC*/ 237 if (last) { 238 if (last->in6p_flags & IN6P_CONTROLOPTS || 239 last->in6p_socket->so_options & SO_TIMESTAMP) 240 ip6_savecontrol(last, &opts, ip6, m); 241 /* strip intermediate headers */ 242 m_adj(m, *offp); 243 if (sbappendaddr(&last->in6p_socket->so_rcv, 244 (struct sockaddr *)&rip6src, m, opts) == 0) { 245 m_freem(m); 246 if (opts) 247 m_freem(opts); 248 rip6stat.rip6s_fullsock++; 249 } else 250 sorwakeup(last->in6p_socket); 251 } else { 252 rip6stat.rip6s_nosock++; 253 if (m->m_flags & M_MCAST) 254 rip6stat.rip6s_nosockmcast++; 255 if (proto == IPPROTO_NONE) 256 m_freem(m); 257 else { 258 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */ 259 icmp6_error(m, ICMP6_PARAM_PROB, 260 ICMP6_PARAMPROB_NEXTHEADER, 261 prvnxtp - mtod(m, char *)); 262 } 263 ip6stat.ip6s_delivered--; 264 } 265 return IPPROTO_DONE; 266 } 267 268 void 269 rip6_ctlinput(cmd, sa, d) 270 int cmd; 271 struct sockaddr *sa; 272 void *d; 273 { 274 struct ip6_hdr *ip6; 275 struct mbuf *m; 276 int off = 0; 277 struct ip6ctlparam *ip6cp = NULL; 278 const struct sockaddr_in6 *sa6_src = NULL; 279 void (*notify) (struct inpcb *, int) = in6_rtchange; 280 281 if (sa->sa_family != AF_INET6 || 282 sa->sa_len != sizeof(struct sockaddr_in6)) 283 return; 284 285 if ((unsigned)cmd >= PRC_NCMDS) 286 return; 287 if (PRC_IS_REDIRECT(cmd)) 288 notify = in6_rtchange, d = NULL; 289 else if (cmd == PRC_HOSTDEAD) 290 d = NULL; 291 else if (inet6ctlerrmap[cmd] == 0) 292 return; 293 294 /* if the parameter is from icmp6, decode it. */ 295 if (d != NULL) { 296 ip6cp = (struct ip6ctlparam *)d; 297 m = ip6cp->ip6c_m; 298 ip6 = ip6cp->ip6c_ip6; 299 off = ip6cp->ip6c_off; 300 sa6_src = ip6cp->ip6c_src; 301 } else { 302 m = NULL; 303 ip6 = NULL; 304 sa6_src = &sa6_any; 305 } 306 307 (void) in6_pcbnotify(&ripcb, sa, 0, (const struct sockaddr *)sa6_src, 308 0, cmd, notify); 309 } 310 311 /* 312 * Generate IPv6 header and pass packet to ip6_output. 313 * Tack on options user may have setup with control call. 314 */ 315 int 316 rip6_output(struct mbuf *m, ...) 317 { 318 struct socket *so; 319 struct sockaddr_in6 *dstsock; 320 struct mbuf *control; 321 struct in6_addr *dst; 322 struct ip6_hdr *ip6; 323 struct inpcb *in6p; 324 u_int plen = m->m_pkthdr.len; 325 int error = 0; 326 struct ip6_pktopts opt, *optp = 0; 327 struct ifnet *oifp = NULL; 328 int type = 0, code = 0; /* for ICMPv6 output statistics only */ 329 int priv = 0; 330 __va_list ap; 331 332 __va_start(ap, m); 333 so = __va_arg(ap, struct socket *); 334 dstsock = __va_arg(ap, struct sockaddr_in6 *); 335 control = __va_arg(ap, struct mbuf *); 336 __va_end(ap); 337 338 in6p = sotoin6pcb(so); 339 340 priv = 0; 341 if (so->so_cred->cr_uid == 0) 342 priv = 1; 343 dst = &dstsock->sin6_addr; 344 if (control) { 345 if ((error = ip6_setpktoptions(control, &opt, priv, 0)) != 0) 346 goto bad; 347 optp = &opt; 348 } else 349 optp = in6p->in6p_outputopts; 350 351 /* 352 * For an ICMPv6 packet, we should know its type and code 353 * to update statistics. 354 */ 355 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 356 struct icmp6_hdr *icmp6; 357 if (m->m_len < sizeof(struct icmp6_hdr) && 358 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) { 359 error = ENOBUFS; 360 goto bad; 361 } 362 icmp6 = mtod(m, struct icmp6_hdr *); 363 type = icmp6->icmp6_type; 364 code = icmp6->icmp6_code; 365 } 366 367 M_PREPEND(m, sizeof(*ip6), M_WAIT); 368 ip6 = mtod(m, struct ip6_hdr *); 369 370 /* 371 * Next header might not be ICMP6 but use its pseudo header anyway. 372 */ 373 ip6->ip6_dst = *dst; 374 375 /* 376 * If the scope of the destination is link-local, embed the interface 377 * index in the address. 378 * 379 * XXX advanced-api value overrides sin6_scope_id 380 */ 381 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) { 382 struct in6_pktinfo *pi; 383 384 /* 385 * XXX Boundary check is assumed to be already done in 386 * ip6_setpktoptions(). 387 */ 388 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) { 389 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex); 390 oifp = ifindex2ifnet[pi->ipi6_ifindex]; 391 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && 392 in6p->in6p_moptions && 393 in6p->in6p_moptions->im6o_multicast_ifp) { 394 oifp = in6p->in6p_moptions->im6o_multicast_ifp; 395 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index); 396 } else if (dstsock->sin6_scope_id) { 397 /* boundary check */ 398 if (dstsock->sin6_scope_id < 0 399 || if_index < dstsock->sin6_scope_id) { 400 error = ENXIO; /* XXX EINVAL? */ 401 goto bad; 402 } 403 ip6->ip6_dst.s6_addr16[1] 404 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/ 405 } 406 } 407 408 /* 409 * Source address selection. 410 */ 411 { 412 struct in6_addr *in6a; 413 414 if ((in6a = in6_selectsrc(dstsock, optp, 415 in6p->in6p_moptions, 416 &in6p->in6p_route, 417 &in6p->in6p_laddr, 418 &error)) == 0) { 419 if (error == 0) 420 error = EADDRNOTAVAIL; 421 goto bad; 422 } 423 ip6->ip6_src = *in6a; 424 if (in6p->in6p_route.ro_rt) 425 oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index]; 426 } 427 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) | 428 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK); 429 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) | 430 (IPV6_VERSION & IPV6_VERSION_MASK); 431 /* ip6_plen will be filled in ip6_output, so not fill it here. */ 432 ip6->ip6_nxt = in6p->in6p_ip6_nxt; 433 ip6->ip6_hlim = in6_selecthlim(in6p, oifp); 434 435 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 || 436 in6p->in6p_cksum != -1) { 437 struct mbuf *n; 438 int off; 439 u_int16_t *p; 440 441 /* compute checksum */ 442 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) 443 off = offsetof(struct icmp6_hdr, icmp6_cksum); 444 else 445 off = in6p->in6p_cksum; 446 if (plen < off + 1) { 447 error = EINVAL; 448 goto bad; 449 } 450 off += sizeof(struct ip6_hdr); 451 452 n = m; 453 while (n && n->m_len <= off) { 454 off -= n->m_len; 455 n = n->m_next; 456 } 457 if (!n) 458 goto bad; 459 p = (u_int16_t *)(mtod(n, caddr_t) + off); 460 *p = 0; 461 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen); 462 } 463 464 error = ip6_output(m, optp, &in6p->in6p_route, 0, 465 in6p->in6p_moptions, &oifp, in6p); 466 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 467 if (oifp) 468 icmp6_ifoutstat_inc(oifp, type, code); 469 icmp6stat.icp6s_outhist[type]++; 470 } else 471 rip6stat.rip6s_opackets++; 472 473 goto freectl; 474 475 bad: 476 if (m) 477 m_freem(m); 478 479 freectl: 480 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt) 481 RTFREE(optp->ip6po_route.ro_rt); 482 if (control) { 483 if (optp == &opt) 484 ip6_clearpktopts(optp, 0, -1); 485 m_freem(control); 486 } 487 return(error); 488 } 489 490 /* 491 * Raw IPv6 socket option processing. 492 */ 493 int 494 rip6_ctloutput(so, sopt) 495 struct socket *so; 496 struct sockopt *sopt; 497 { 498 int error; 499 500 if (sopt->sopt_level == IPPROTO_ICMPV6) 501 /* 502 * XXX: is it better to call icmp6_ctloutput() directly 503 * from protosw? 504 */ 505 return(icmp6_ctloutput(so, sopt)); 506 else if (sopt->sopt_level != IPPROTO_IPV6) 507 return (EINVAL); 508 509 error = 0; 510 511 switch (sopt->sopt_dir) { 512 case SOPT_GET: 513 switch (sopt->sopt_name) { 514 case MRT6_INIT: 515 case MRT6_DONE: 516 case MRT6_ADD_MIF: 517 case MRT6_DEL_MIF: 518 case MRT6_ADD_MFC: 519 case MRT6_DEL_MFC: 520 case MRT6_PIM: 521 error = ip6_mrouter_get(so, sopt); 522 break; 523 default: 524 error = ip6_ctloutput(so, sopt); 525 break; 526 } 527 break; 528 529 case SOPT_SET: 530 switch (sopt->sopt_name) { 531 case MRT6_INIT: 532 case MRT6_DONE: 533 case MRT6_ADD_MIF: 534 case MRT6_DEL_MIF: 535 case MRT6_ADD_MFC: 536 case MRT6_DEL_MFC: 537 case MRT6_PIM: 538 error = ip6_mrouter_set(so, sopt); 539 break; 540 default: 541 error = ip6_ctloutput(so, sopt); 542 break; 543 } 544 break; 545 } 546 547 return (error); 548 } 549 550 static int 551 rip6_attach(struct socket *so, int proto, struct thread *td) 552 { 553 struct inpcb *inp; 554 int error, s; 555 556 inp = sotoinpcb(so); 557 if (inp) 558 panic("rip6_attach"); 559 if ((error = suser(td)) != 0) 560 return error; 561 562 error = soreserve(so, rip_sendspace, rip_recvspace); 563 if (error) 564 return error; 565 s = splnet(); 566 error = in_pcballoc(so, &ripcbinfo, td); 567 splx(s); 568 if (error) 569 return error; 570 inp = (struct inpcb *)so->so_pcb; 571 inp->inp_vflag |= INP_IPV6; 572 inp->in6p_ip6_nxt = (long)proto; 573 inp->in6p_hops = -1; /* use kernel default */ 574 inp->in6p_cksum = -1; 575 MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *, 576 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT); 577 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt); 578 return 0; 579 } 580 581 static int 582 rip6_detach(struct socket *so) 583 { 584 struct inpcb *inp; 585 586 inp = sotoinpcb(so); 587 if (inp == 0) 588 panic("rip6_detach"); 589 /* xxx: RSVP */ 590 if (so == ip6_mrouter) 591 ip6_mrouter_done(); 592 if (inp->in6p_icmp6filt) { 593 FREE(inp->in6p_icmp6filt, M_PCB); 594 inp->in6p_icmp6filt = NULL; 595 } 596 in6_pcbdetach(inp); 597 return 0; 598 } 599 600 static int 601 rip6_abort(struct socket *so) 602 { 603 soisdisconnected(so); 604 return rip6_detach(so); 605 } 606 607 static int 608 rip6_disconnect(struct socket *so) 609 { 610 struct inpcb *inp = sotoinpcb(so); 611 612 if ((so->so_state & SS_ISCONNECTED) == 0) 613 return ENOTCONN; 614 inp->in6p_faddr = in6addr_any; 615 return rip6_abort(so); 616 } 617 618 static int 619 rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 620 { 621 struct inpcb *inp = sotoinpcb(so); 622 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 623 struct ifaddr *ia = NULL; 624 625 if (nam->sa_len != sizeof(*addr)) 626 return EINVAL; 627 628 if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6) 629 return EADDRNOTAVAIL; 630 #ifdef ENABLE_DEFAULT_SCOPE 631 if (addr->sin6_scope_id == 0) { /* not change if specified */ 632 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 633 } 634 #endif 635 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) && 636 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0) 637 return EADDRNOTAVAIL; 638 if (ia && 639 ((struct in6_ifaddr *)ia)->ia6_flags & 640 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY| 641 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) { 642 return(EADDRNOTAVAIL); 643 } 644 inp->in6p_laddr = addr->sin6_addr; 645 return 0; 646 } 647 648 static int 649 rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 650 { 651 struct inpcb *inp = sotoinpcb(so); 652 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 653 struct in6_addr *in6a = NULL; 654 int error = 0; 655 #ifdef ENABLE_DEFAULT_SCOPE 656 struct sockaddr_in6 tmp; 657 #endif 658 659 if (nam->sa_len != sizeof(*addr)) 660 return EINVAL; 661 if (TAILQ_EMPTY(&ifnet)) 662 return EADDRNOTAVAIL; 663 if (addr->sin6_family != AF_INET6) 664 return EAFNOSUPPORT; 665 #ifdef ENABLE_DEFAULT_SCOPE 666 if (addr->sin6_scope_id == 0) { /* not change if specified */ 667 /* avoid overwrites */ 668 tmp = *addr; 669 addr = &tmp; 670 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 671 } 672 #endif 673 /* Source address selection. XXX: need pcblookup? */ 674 in6a = in6_selectsrc(addr, inp->in6p_outputopts, 675 inp->in6p_moptions, &inp->in6p_route, 676 &inp->in6p_laddr, &error); 677 if (in6a == NULL) 678 return (error ? error : EADDRNOTAVAIL); 679 inp->in6p_laddr = *in6a; 680 inp->in6p_faddr = addr->sin6_addr; 681 soisconnected(so); 682 return 0; 683 } 684 685 static int 686 rip6_shutdown(struct socket *so) 687 { 688 socantsendmore(so); 689 return 0; 690 } 691 692 static int 693 rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 694 struct mbuf *control, struct thread *td) 695 { 696 struct inpcb *inp = sotoinpcb(so); 697 struct sockaddr_in6 tmp; 698 struct sockaddr_in6 *dst; 699 700 /* always copy sockaddr to avoid overwrites */ 701 if (so->so_state & SS_ISCONNECTED) { 702 if (nam) { 703 m_freem(m); 704 return EISCONN; 705 } 706 /* XXX */ 707 bzero(&tmp, sizeof(tmp)); 708 tmp.sin6_family = AF_INET6; 709 tmp.sin6_len = sizeof(struct sockaddr_in6); 710 bcopy(&inp->in6p_faddr, &tmp.sin6_addr, 711 sizeof(struct in6_addr)); 712 dst = &tmp; 713 } else { 714 if (nam == NULL) { 715 m_freem(m); 716 return ENOTCONN; 717 } 718 tmp = *(struct sockaddr_in6 *)nam; 719 dst = &tmp; 720 } 721 #ifdef ENABLE_DEFAULT_SCOPE 722 if (dst->sin6_scope_id == 0) { /* not change if specified */ 723 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr); 724 } 725 #endif 726 return rip6_output(m, so, dst, control); 727 } 728 729 struct pr_usrreqs rip6_usrreqs = { 730 rip6_abort, pru_accept_notsupp, rip6_attach, rip6_bind, rip6_connect, 731 pru_connect2_notsupp, in6_control, rip6_detach, rip6_disconnect, 732 pru_listen_notsupp, in6_setpeeraddr, pru_rcvd_notsupp, 733 pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown, 734 in6_setsockaddr, sosend, soreceive, sopoll 735 }; 736