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 1.15 2004/06/07 07:02:42 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 inpcbinfo ripcbinfo; 121 extern u_long rip_sendspace; 122 extern u_long rip_recvspace; 123 124 struct rip6stat rip6stat; 125 126 /* 127 * Setup generic address and protocol structures 128 * for raw_input routine, then pass them along with 129 * mbuf chain. 130 */ 131 int 132 rip6_input(struct mbuf **mp, int *offp, int proto) 133 { 134 struct mbuf *m = *mp; 135 struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); 136 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, &ripcbinfo.pcblisthead, inp_list) { 152 if (in6p->in6p_flags & INP_PLACEMARKER) 153 continue; 154 if ((in6p->in6p_vflag & INP_IPV6) == 0) 155 continue; 156 if (in6p->in6p_ip6_nxt && 157 in6p->in6p_ip6_nxt != proto) 158 continue; 159 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) && 160 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) 161 continue; 162 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) && 163 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src)) 164 continue; 165 if (in6p->in6p_cksum != -1) { 166 rip6stat.rip6s_isum++; 167 if (in6_cksum(m, ip6->ip6_nxt, *offp, 168 m->m_pkthdr.len - *offp)) { 169 rip6stat.rip6s_badsum++; 170 continue; 171 } 172 } 173 if (last) { 174 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); 175 176 #ifdef IPSEC 177 /* 178 * Check AH/ESP integrity. 179 */ 180 if (n && ipsec6_in_reject_so(n, last->inp_socket)) { 181 m_freem(n); 182 ipsec6stat.in_polvio++; 183 /* do not inject data into pcb */ 184 } else 185 #endif /*IPSEC*/ 186 #ifdef FAST_IPSEC 187 /* 188 * Check AH/ESP integrity. 189 */ 190 if (n && ipsec6_in_reject(n, last)) { 191 m_freem(n); 192 /* do not inject data into pcb */ 193 } else 194 #endif /*FAST_IPSEC*/ 195 if (n) { 196 if (last->in6p_flags & IN6P_CONTROLOPTS || 197 last->in6p_socket->so_options & SO_TIMESTAMP) 198 ip6_savecontrol(last, &opts, ip6, n); 199 /* strip intermediate headers */ 200 m_adj(n, *offp); 201 if (sbappendaddr(&last->in6p_socket->so_rcv, 202 (struct sockaddr *)&rip6src, 203 n, opts) == 0) { 204 m_freem(n); 205 if (opts) 206 m_freem(opts); 207 rip6stat.rip6s_fullsock++; 208 } else 209 sorwakeup(last->in6p_socket); 210 opts = NULL; 211 } 212 } 213 last = in6p; 214 } 215 #ifdef IPSEC 216 /* 217 * Check AH/ESP integrity. 218 */ 219 if (last && ipsec6_in_reject_so(m, last->inp_socket)) { 220 m_freem(m); 221 ipsec6stat.in_polvio++; 222 ip6stat.ip6s_delivered--; 223 /* do not inject data into pcb */ 224 } else 225 #endif /*IPSEC*/ 226 #ifdef FAST_IPSEC 227 /* 228 * Check AH/ESP integrity. 229 */ 230 if (last && ipsec6_in_reject(m, last)) { 231 m_freem(m); 232 ip6stat.ip6s_delivered--; 233 /* do not inject data into pcb */ 234 } else 235 #endif /*FAST_IPSEC*/ 236 if (last) { 237 if (last->in6p_flags & IN6P_CONTROLOPTS || 238 last->in6p_socket->so_options & SO_TIMESTAMP) 239 ip6_savecontrol(last, &opts, ip6, m); 240 /* strip intermediate headers */ 241 m_adj(m, *offp); 242 if (sbappendaddr(&last->in6p_socket->so_rcv, 243 (struct sockaddr *)&rip6src, m, opts) == 0) { 244 m_freem(m); 245 if (opts) 246 m_freem(opts); 247 rip6stat.rip6s_fullsock++; 248 } else 249 sorwakeup(last->in6p_socket); 250 } else { 251 rip6stat.rip6s_nosock++; 252 if (m->m_flags & M_MCAST) 253 rip6stat.rip6s_nosockmcast++; 254 if (proto == IPPROTO_NONE) 255 m_freem(m); 256 else { 257 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */ 258 icmp6_error(m, ICMP6_PARAM_PROB, 259 ICMP6_PARAMPROB_NEXTHEADER, 260 prvnxtp - mtod(m, char *)); 261 } 262 ip6stat.ip6s_delivered--; 263 } 264 return IPPROTO_DONE; 265 } 266 267 void 268 rip6_ctlinput(int cmd, struct sockaddr *sa, void *d) 269 { 270 struct ip6_hdr *ip6; 271 struct mbuf *m; 272 int off = 0; 273 struct ip6ctlparam *ip6cp = NULL; 274 const struct sockaddr_in6 *sa6_src = NULL; 275 void (*notify) (struct inpcb *, int) = in6_rtchange; 276 277 if (sa->sa_family != AF_INET6 || 278 sa->sa_len != sizeof(struct sockaddr_in6)) 279 return; 280 281 if ((unsigned)cmd >= PRC_NCMDS) 282 return; 283 if (PRC_IS_REDIRECT(cmd)) 284 notify = in6_rtchange, d = NULL; 285 else if (cmd == PRC_HOSTDEAD) 286 d = NULL; 287 else if (inet6ctlerrmap[cmd] == 0) 288 return; 289 290 /* if the parameter is from icmp6, decode it. */ 291 if (d != NULL) { 292 ip6cp = (struct ip6ctlparam *)d; 293 m = ip6cp->ip6c_m; 294 ip6 = ip6cp->ip6c_ip6; 295 off = ip6cp->ip6c_off; 296 sa6_src = ip6cp->ip6c_src; 297 } else { 298 m = NULL; 299 ip6 = NULL; 300 sa6_src = &sa6_any; 301 } 302 303 (void) in6_pcbnotify(&ripcbinfo.pcblisthead, sa, 0, 304 (const struct sockaddr *)sa6_src, 305 0, cmd, notify); 306 } 307 308 /* 309 * Generate IPv6 header and pass packet to ip6_output. 310 * Tack on options user may have setup with control call. 311 */ 312 int 313 rip6_output(struct mbuf *m, struct socket *so, ...) 314 { 315 struct sockaddr_in6 *dstsock; 316 struct mbuf *control; 317 struct in6_addr *dst; 318 struct ip6_hdr *ip6; 319 struct inpcb *in6p; 320 u_int plen = m->m_pkthdr.len; 321 int error = 0; 322 struct ip6_pktopts opt, *optp = 0; 323 struct ifnet *oifp = NULL; 324 int type = 0, code = 0; /* for ICMPv6 output statistics only */ 325 int priv = 0; 326 __va_list ap; 327 328 __va_start(ap, so); 329 dstsock = __va_arg(ap, struct sockaddr_in6 *); 330 control = __va_arg(ap, struct mbuf *); 331 __va_end(ap); 332 333 in6p = sotoin6pcb(so); 334 335 priv = 0; 336 if (so->so_cred->cr_uid == 0) 337 priv = 1; 338 dst = &dstsock->sin6_addr; 339 if (control) { 340 if ((error = ip6_setpktoptions(control, &opt, priv, 0)) != 0) 341 goto bad; 342 optp = &opt; 343 } else 344 optp = in6p->in6p_outputopts; 345 346 /* 347 * For an ICMPv6 packet, we should know its type and code 348 * to update statistics. 349 */ 350 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 351 struct icmp6_hdr *icmp6; 352 if (m->m_len < sizeof(struct icmp6_hdr) && 353 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) { 354 error = ENOBUFS; 355 goto bad; 356 } 357 icmp6 = mtod(m, struct icmp6_hdr *); 358 type = icmp6->icmp6_type; 359 code = icmp6->icmp6_code; 360 } 361 362 M_PREPEND(m, sizeof(*ip6), MB_WAIT); 363 ip6 = mtod(m, struct ip6_hdr *); 364 365 /* 366 * Next header might not be ICMP6 but use its pseudo header anyway. 367 */ 368 ip6->ip6_dst = *dst; 369 370 /* 371 * If the scope of the destination is link-local, embed the interface 372 * index in the address. 373 * 374 * XXX advanced-api value overrides sin6_scope_id 375 */ 376 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) { 377 struct in6_pktinfo *pi; 378 379 /* 380 * XXX Boundary check is assumed to be already done in 381 * ip6_setpktoptions(). 382 */ 383 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) { 384 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex); 385 oifp = ifindex2ifnet[pi->ipi6_ifindex]; 386 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && 387 in6p->in6p_moptions && 388 in6p->in6p_moptions->im6o_multicast_ifp) { 389 oifp = in6p->in6p_moptions->im6o_multicast_ifp; 390 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index); 391 } else if (dstsock->sin6_scope_id) { 392 /* boundary check */ 393 if (dstsock->sin6_scope_id < 0 394 || if_index < dstsock->sin6_scope_id) { 395 error = ENXIO; /* XXX EINVAL? */ 396 goto bad; 397 } 398 ip6->ip6_dst.s6_addr16[1] 399 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/ 400 } 401 } 402 403 /* 404 * Source address selection. 405 */ 406 { 407 struct in6_addr *in6a; 408 409 if ((in6a = in6_selectsrc(dstsock, optp, 410 in6p->in6p_moptions, 411 &in6p->in6p_route, 412 &in6p->in6p_laddr, 413 &error)) == 0) { 414 if (error == 0) 415 error = EADDRNOTAVAIL; 416 goto bad; 417 } 418 ip6->ip6_src = *in6a; 419 if (in6p->in6p_route.ro_rt) 420 oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index]; 421 } 422 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) | 423 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK); 424 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) | 425 (IPV6_VERSION & IPV6_VERSION_MASK); 426 /* ip6_plen will be filled in ip6_output, so not fill it here. */ 427 ip6->ip6_nxt = in6p->in6p_ip6_nxt; 428 ip6->ip6_hlim = in6_selecthlim(in6p, oifp); 429 430 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 || 431 in6p->in6p_cksum != -1) { 432 struct mbuf *n; 433 int off; 434 u_int16_t *p; 435 436 /* compute checksum */ 437 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) 438 off = offsetof(struct icmp6_hdr, icmp6_cksum); 439 else 440 off = in6p->in6p_cksum; 441 if (plen < off + 1) { 442 error = EINVAL; 443 goto bad; 444 } 445 off += sizeof(struct ip6_hdr); 446 447 n = m; 448 while (n && n->m_len <= off) { 449 off -= n->m_len; 450 n = n->m_next; 451 } 452 if (!n) 453 goto bad; 454 p = (u_int16_t *)(mtod(n, caddr_t) + off); 455 *p = 0; 456 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen); 457 } 458 459 error = ip6_output(m, optp, &in6p->in6p_route, 0, 460 in6p->in6p_moptions, &oifp, in6p); 461 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 462 if (oifp) 463 icmp6_ifoutstat_inc(oifp, type, code); 464 icmp6stat.icp6s_outhist[type]++; 465 } else 466 rip6stat.rip6s_opackets++; 467 468 goto freectl; 469 470 bad: 471 if (m) 472 m_freem(m); 473 474 freectl: 475 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt) 476 RTFREE(optp->ip6po_route.ro_rt); 477 if (control) { 478 if (optp == &opt) 479 ip6_clearpktopts(optp, 0, -1); 480 m_freem(control); 481 } 482 return(error); 483 } 484 485 /* 486 * Raw IPv6 socket option processing. 487 */ 488 int 489 rip6_ctloutput(struct socket *so, struct sockopt *sopt) 490 { 491 int error; 492 493 if (sopt->sopt_level == IPPROTO_ICMPV6) 494 /* 495 * XXX: is it better to call icmp6_ctloutput() directly 496 * from protosw? 497 */ 498 return(icmp6_ctloutput(so, sopt)); 499 else if (sopt->sopt_level != IPPROTO_IPV6) 500 return (EINVAL); 501 502 error = 0; 503 504 switch (sopt->sopt_dir) { 505 case SOPT_GET: 506 switch (sopt->sopt_name) { 507 case MRT6_INIT: 508 case MRT6_DONE: 509 case MRT6_ADD_MIF: 510 case MRT6_DEL_MIF: 511 case MRT6_ADD_MFC: 512 case MRT6_DEL_MFC: 513 case MRT6_PIM: 514 error = ip6_mrouter_get(so, sopt); 515 break; 516 default: 517 error = ip6_ctloutput(so, sopt); 518 break; 519 } 520 break; 521 522 case SOPT_SET: 523 switch (sopt->sopt_name) { 524 case MRT6_INIT: 525 case MRT6_DONE: 526 case MRT6_ADD_MIF: 527 case MRT6_DEL_MIF: 528 case MRT6_ADD_MFC: 529 case MRT6_DEL_MFC: 530 case MRT6_PIM: 531 error = ip6_mrouter_set(so, sopt); 532 break; 533 default: 534 error = ip6_ctloutput(so, sopt); 535 break; 536 } 537 break; 538 } 539 540 return (error); 541 } 542 543 static int 544 rip6_attach(struct socket *so, int proto, struct pru_attach_info *ai) 545 { 546 struct inpcb *inp; 547 int error, s; 548 549 inp = sotoinpcb(so); 550 if (inp) 551 panic("rip6_attach"); 552 if ((error = suser_cred(ai->p_ucred, NULL_CRED_OKAY)) != 0) 553 return error; 554 555 error = soreserve(so, rip_sendspace, rip_recvspace, ai->sb_rlimit); 556 if (error) 557 return error; 558 s = splnet(); 559 error = in_pcballoc(so, &ripcbinfo); 560 splx(s); 561 if (error) 562 return error; 563 inp = (struct inpcb *)so->so_pcb; 564 inp->inp_vflag |= INP_IPV6; 565 inp->in6p_ip6_nxt = (long)proto; 566 inp->in6p_hops = -1; /* use kernel default */ 567 inp->in6p_cksum = -1; 568 MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *, 569 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT); 570 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt); 571 return 0; 572 } 573 574 static int 575 rip6_detach(struct socket *so) 576 { 577 struct inpcb *inp; 578 579 inp = sotoinpcb(so); 580 if (inp == 0) 581 panic("rip6_detach"); 582 /* xxx: RSVP */ 583 if (so == ip6_mrouter) 584 ip6_mrouter_done(); 585 if (inp->in6p_icmp6filt) { 586 FREE(inp->in6p_icmp6filt, M_PCB); 587 inp->in6p_icmp6filt = NULL; 588 } 589 in6_pcbdetach(inp); 590 return 0; 591 } 592 593 static int 594 rip6_abort(struct socket *so) 595 { 596 soisdisconnected(so); 597 return rip6_detach(so); 598 } 599 600 static int 601 rip6_disconnect(struct socket *so) 602 { 603 struct inpcb *inp = sotoinpcb(so); 604 605 if ((so->so_state & SS_ISCONNECTED) == 0) 606 return ENOTCONN; 607 inp->in6p_faddr = in6addr_any; 608 return rip6_abort(so); 609 } 610 611 static int 612 rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 613 { 614 struct inpcb *inp = sotoinpcb(so); 615 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 616 struct ifaddr *ia = NULL; 617 618 if (nam->sa_len != sizeof(*addr)) 619 return EINVAL; 620 621 if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6) 622 return EADDRNOTAVAIL; 623 #ifdef ENABLE_DEFAULT_SCOPE 624 if (addr->sin6_scope_id == 0) { /* not change if specified */ 625 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 626 } 627 #endif 628 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) && 629 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0) 630 return EADDRNOTAVAIL; 631 if (ia && 632 ((struct in6_ifaddr *)ia)->ia6_flags & 633 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY| 634 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) { 635 return(EADDRNOTAVAIL); 636 } 637 inp->in6p_laddr = addr->sin6_addr; 638 return 0; 639 } 640 641 static int 642 rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 643 { 644 struct inpcb *inp = sotoinpcb(so); 645 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 646 struct in6_addr *in6a = NULL; 647 int error = 0; 648 #ifdef ENABLE_DEFAULT_SCOPE 649 struct sockaddr_in6 tmp; 650 #endif 651 652 if (nam->sa_len != sizeof(*addr)) 653 return EINVAL; 654 if (TAILQ_EMPTY(&ifnet)) 655 return EADDRNOTAVAIL; 656 if (addr->sin6_family != AF_INET6) 657 return EAFNOSUPPORT; 658 #ifdef ENABLE_DEFAULT_SCOPE 659 if (addr->sin6_scope_id == 0) { /* not change if specified */ 660 /* avoid overwrites */ 661 tmp = *addr; 662 addr = &tmp; 663 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 664 } 665 #endif 666 /* Source address selection. XXX: need pcblookup? */ 667 in6a = in6_selectsrc(addr, inp->in6p_outputopts, 668 inp->in6p_moptions, &inp->in6p_route, 669 &inp->in6p_laddr, &error); 670 if (in6a == NULL) 671 return (error ? error : EADDRNOTAVAIL); 672 inp->in6p_laddr = *in6a; 673 inp->in6p_faddr = addr->sin6_addr; 674 soisconnected(so); 675 return 0; 676 } 677 678 static int 679 rip6_shutdown(struct socket *so) 680 { 681 socantsendmore(so); 682 return 0; 683 } 684 685 static int 686 rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 687 struct mbuf *control, struct thread *td) 688 { 689 struct inpcb *inp = sotoinpcb(so); 690 struct sockaddr_in6 tmp; 691 struct sockaddr_in6 *dst; 692 693 /* always copy sockaddr to avoid overwrites */ 694 if (so->so_state & SS_ISCONNECTED) { 695 if (nam) { 696 m_freem(m); 697 return EISCONN; 698 } 699 /* XXX */ 700 bzero(&tmp, sizeof(tmp)); 701 tmp.sin6_family = AF_INET6; 702 tmp.sin6_len = sizeof(struct sockaddr_in6); 703 bcopy(&inp->in6p_faddr, &tmp.sin6_addr, 704 sizeof(struct in6_addr)); 705 dst = &tmp; 706 } else { 707 if (nam == NULL) { 708 m_freem(m); 709 return ENOTCONN; 710 } 711 tmp = *(struct sockaddr_in6 *)nam; 712 dst = &tmp; 713 } 714 #ifdef ENABLE_DEFAULT_SCOPE 715 if (dst->sin6_scope_id == 0) { /* not change if specified */ 716 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr); 717 } 718 #endif 719 return rip6_output(m, so, dst, control); 720 } 721 722 struct pr_usrreqs rip6_usrreqs = { 723 rip6_abort, pru_accept_notsupp, rip6_attach, rip6_bind, rip6_connect, 724 pru_connect2_notsupp, in6_control, rip6_detach, rip6_disconnect, 725 pru_listen_notsupp, in6_setpeeraddr, pru_rcvd_notsupp, 726 pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown, 727 in6_setsockaddr, sosend, soreceive, sopoll 728 }; 729