raw_ip6.c revision 125941
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 125941 2004-02-17 14:02:37Z ume $ 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#ifdef FAST_IPSEC 109#include <netipsec/ipsec.h> 110#include <netipsec/ipsec6.h> 111#endif /* FAST_IPSEC */ 112 113#include <machine/stdarg.h> 114 115#define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 116#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 117 118/* 119 * Raw interface to IP6 protocol. 120 */ 121 122extern struct inpcbhead ripcb; 123extern struct inpcbinfo ripcbinfo; 124extern u_long rip_sendspace; 125extern u_long rip_recvspace; 126 127struct rip6stat rip6stat; 128 129/* 130 * Setup generic address and protocol structures 131 * for raw_input routine, then pass them along with 132 * mbuf chain. 133 */ 134int 135rip6_input(mp, offp, proto) 136 struct mbuf **mp; 137 int *offp, proto; 138{ 139 struct mbuf *m = *mp; 140 register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); 141 register struct inpcb *in6p; 142 struct inpcb *last = 0; 143 struct mbuf *opts = NULL; 144 struct sockaddr_in6 fromsa; 145 146 rip6stat.rip6s_ipackets++; 147 148 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) { 149 /* XXX send icmp6 host/port unreach? */ 150 m_freem(m); 151 return IPPROTO_DONE; 152 } 153 154 init_sin6(&fromsa, m); /* general init */ 155 156 LIST_FOREACH(in6p, &ripcb, inp_list) { 157 if ((in6p->in6p_vflag & INP_IPV6) == 0) 158 continue; 159 if (in6p->in6p_ip6_nxt && 160 in6p->in6p_ip6_nxt != proto) 161 continue; 162 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) && 163 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) 164 continue; 165 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) && 166 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src)) 167 continue; 168 if (in6p->in6p_cksum != -1) { 169 rip6stat.rip6s_isum++; 170 if (in6_cksum(m, ip6->ip6_nxt, *offp, 171 m->m_pkthdr.len - *offp)) { 172 rip6stat.rip6s_badsum++; 173 continue; 174 } 175 } 176 if (last) { 177 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); 178 179#if defined(IPSEC) || defined(FAST_IPSEC) 180 /* 181 * Check AH/ESP integrity. 182 */ 183 if (n && ipsec6_in_reject(n, last)) { 184 m_freem(n); 185#ifdef IPSEC 186 ipsec6stat.in_polvio++; 187#endif /*IPSEC*/ 188 /* do not inject data into pcb */ 189 } else 190#endif /*IPSEC || FAST_IPSEC*/ 191 if (n) { 192 if (last->in6p_flags & IN6P_CONTROLOPTS || 193 last->in6p_socket->so_options & SO_TIMESTAMP) 194 ip6_savecontrol(last, n, &opts); 195 /* strip intermediate headers */ 196 m_adj(n, *offp); 197 if (sbappendaddr(&last->in6p_socket->so_rcv, 198 (struct sockaddr *)&fromsa, 199 n, opts) == 0) { 200 m_freem(n); 201 if (opts) 202 m_freem(opts); 203 rip6stat.rip6s_fullsock++; 204 } else 205 sorwakeup(last->in6p_socket); 206 opts = NULL; 207 } 208 } 209 last = in6p; 210 } 211#if defined(IPSEC) || defined(FAST_IPSEC) 212 /* 213 * Check AH/ESP integrity. 214 */ 215 if (last && ipsec6_in_reject(m, last)) { 216 m_freem(m); 217#ifdef IPSEC 218 ipsec6stat.in_polvio++; 219#endif /*IPSEC*/ 220 ip6stat.ip6s_delivered--; 221 /* do not inject data into pcb */ 222 } else 223#endif /*IPSEC || FAST_IPSEC*/ 224 if (last) { 225 if (last->in6p_flags & IN6P_CONTROLOPTS || 226 last->in6p_socket->so_options & SO_TIMESTAMP) 227 ip6_savecontrol(last, m, &opts); 228 /* strip intermediate headers */ 229 m_adj(m, *offp); 230 if (sbappendaddr(&last->in6p_socket->so_rcv, 231 (struct sockaddr *)&fromsa, m, opts) == 0) { 232 m_freem(m); 233 if (opts) 234 m_freem(opts); 235 rip6stat.rip6s_fullsock++; 236 } else 237 sorwakeup(last->in6p_socket); 238 } else { 239 rip6stat.rip6s_nosock++; 240 if (m->m_flags & M_MCAST) 241 rip6stat.rip6s_nosockmcast++; 242 if (proto == IPPROTO_NONE) 243 m_freem(m); 244 else { 245 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */ 246 icmp6_error(m, ICMP6_PARAM_PROB, 247 ICMP6_PARAMPROB_NEXTHEADER, 248 prvnxtp - mtod(m, char *)); 249 } 250 ip6stat.ip6s_delivered--; 251 } 252 return IPPROTO_DONE; 253} 254 255void 256rip6_ctlinput(cmd, sa, d) 257 int cmd; 258 struct sockaddr *sa; 259 void *d; 260{ 261 struct ip6_hdr *ip6; 262 struct mbuf *m; 263 int off = 0; 264 struct ip6ctlparam *ip6cp = NULL; 265 const struct sockaddr_in6 *sa6_src = NULL; 266 void *cmdarg; 267 struct inpcb *(*notify) __P((struct inpcb *, int)) = in6_rtchange; 268 269 if (sa->sa_family != AF_INET6 || 270 sa->sa_len != sizeof(struct sockaddr_in6)) 271 return; 272 273 if ((unsigned)cmd >= PRC_NCMDS) 274 return; 275 if (PRC_IS_REDIRECT(cmd)) 276 notify = in6_rtchange, d = NULL; 277 else if (cmd == PRC_HOSTDEAD) 278 d = NULL; 279 else if (inet6ctlerrmap[cmd] == 0) 280 return; 281 282 /* if the parameter is from icmp6, decode it. */ 283 if (d != NULL) { 284 ip6cp = (struct ip6ctlparam *)d; 285 m = ip6cp->ip6c_m; 286 ip6 = ip6cp->ip6c_ip6; 287 off = ip6cp->ip6c_off; 288 cmdarg = ip6cp->ip6c_cmdarg; 289 sa6_src = ip6cp->ip6c_src; 290 } else { 291 m = NULL; 292 ip6 = NULL; 293 cmdarg = NULL; 294 sa6_src = &sa6_any; 295 } 296 297 (void) in6_pcbnotify(&ripcb, sa, 0, (const struct sockaddr *)sa6_src, 298 0, cmd, cmdarg, notify); 299} 300 301/* 302 * Generate IPv6 header and pass packet to ip6_output. 303 * Tack on options user may have setup with control call. 304 */ 305int 306#if __STDC__ 307rip6_output(struct mbuf *m, ...) 308#else 309rip6_output(m, va_alist) 310 struct mbuf *m; 311 va_dcl 312#endif 313{ 314 struct mbuf *control; 315 struct socket *so; 316 struct sockaddr_in6 *dstsock; 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, *stickyopt = NULL; 323 struct ifnet *oifp = NULL; 324 int type = 0, code = 0; /* for ICMPv6 output statistics only */ 325 int priv = 0; 326 struct in6_addr *in6a; 327 va_list ap; 328 329 va_start(ap, m); 330 so = va_arg(ap, struct socket *); 331 dstsock = va_arg(ap, struct sockaddr_in6 *); 332 control = va_arg(ap, struct mbuf *); 333 va_end(ap); 334 335 in6p = sotoin6pcb(so); 336 stickyopt = in6p->in6p_outputopts; 337 338 priv = 0; 339 if (so->so_cred->cr_uid == 0) 340 priv = 1; 341 dst = &dstsock->sin6_addr; 342 if (control) { 343 if ((error = ip6_setpktoptions(control, &opt, 344 stickyopt, priv, 0, 345 so->so_proto->pr_protocol)) 346 != 0) { 347 goto bad; 348 } 349 in6p->in6p_outputopts = &opt; 350 } 351 352 /* 353 * For an ICMPv6 packet, we should know its type and code 354 * to update statistics. 355 */ 356 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 357 struct icmp6_hdr *icmp6; 358 if (m->m_len < sizeof(struct icmp6_hdr) && 359 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) { 360 error = ENOBUFS; 361 goto bad; 362 } 363 icmp6 = mtod(m, struct icmp6_hdr *); 364 type = icmp6->icmp6_type; 365 code = icmp6->icmp6_code; 366 } 367 368 M_PREPEND(m, sizeof(*ip6), M_TRYWAIT); 369 ip6 = mtod(m, struct ip6_hdr *); 370 371 /* 372 * Next header might not be ICMP6 but use its pseudo header anyway. 373 */ 374 ip6->ip6_dst = *dst; 375 376 /* 377 * If the scope of the destination is link-local, embed the interface 378 * index in the address. 379 * 380 * XXX advanced-api value overrides sin6_scope_id 381 */ 382 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) { 383 struct in6_pktinfo *pi; 384 385 /* 386 * XXX Boundary check is assumed to be already done in 387 * ip6_setpktoptions(). 388 */ 389 if (in6p->in6p_outputopts && 390 (pi = in6p->in6p_outputopts->ip6po_pktinfo) && 391 pi->ipi6_ifindex) { 392 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex); 393 oifp = ifnet_byindex(pi->ipi6_ifindex); 394 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && 395 in6p->in6p_moptions && 396 in6p->in6p_moptions->im6o_multicast_ifp) { 397 oifp = in6p->in6p_moptions->im6o_multicast_ifp; 398 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index); 399 } else if (dstsock->sin6_scope_id) { 400 /* boundary check */ 401 if (dstsock->sin6_scope_id < 0 || 402 if_index < dstsock->sin6_scope_id) { 403 error = ENXIO; /* XXX EINVAL? */ 404 goto bad; 405 } 406 ip6->ip6_dst.s6_addr16[1] = 407 htons(dstsock->sin6_scope_id & 0xffff); /* XXX */ 408 } 409 } 410 411 /* 412 * Source address selection. 413 */ 414 if ((in6a = in6_selectsrc(dstsock, in6p->in6p_outputopts, 415 in6p->in6p_moptions, NULL, &in6p->in6p_laddr, &error)) == 0) { 416 if (error == 0) 417 error = EADDRNOTAVAIL; 418 goto bad; 419 } 420 ip6->ip6_src = *in6a; 421 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) | 422 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK); 423 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) | 424 (IPV6_VERSION & IPV6_VERSION_MASK); 425 /* ip6_plen will be filled in ip6_output, so not fill it here. */ 426 ip6->ip6_nxt = in6p->in6p_ip6_nxt; 427 ip6->ip6_hlim = in6_selecthlim(in6p, oifp); 428 429 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 || 430 in6p->in6p_cksum != -1) { 431 struct mbuf *n; 432 int off; 433 u_int16_t *p; 434 435 /* compute checksum */ 436 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) 437 off = offsetof(struct icmp6_hdr, icmp6_cksum); 438 else 439 off = in6p->in6p_cksum; 440 if (plen < off + 1) { 441 error = EINVAL; 442 goto bad; 443 } 444 off += sizeof(struct ip6_hdr); 445 446 n = m; 447 while (n && n->m_len <= off) { 448 off -= n->m_len; 449 n = n->m_next; 450 } 451 if (!n) 452 goto bad; 453 p = (u_int16_t *)(mtod(n, caddr_t) + off); 454 *p = 0; 455 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen); 456 } 457 458 error = ip6_output(m, in6p->in6p_outputopts, NULL, 0, 459 in6p->in6p_moptions, &oifp, in6p); 460 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 461 if (oifp) 462 icmp6_ifoutstat_inc(oifp, type, code); 463 icmp6stat.icp6s_outhist[type]++; 464 } else 465 rip6stat.rip6s_opackets++; 466 467 goto freectl; 468 469 bad: 470 if (m) 471 m_freem(m); 472 473 freectl: 474 if (control) { 475 ip6_clearpktopts(in6p->in6p_outputopts, -1); 476 in6p->in6p_outputopts = stickyopt; 477 m_freem(control); 478 } 479 return (error); 480} 481 482/* 483 * Raw IPv6 socket option processing. 484 */ 485int 486rip6_ctloutput(so, sopt) 487 struct socket *so; 488 struct sockopt *sopt; 489{ 490 int error; 491 492 if (sopt->sopt_level == IPPROTO_ICMPV6) 493 /* 494 * XXX: is it better to call icmp6_ctloutput() directly 495 * from protosw? 496 */ 497 return (icmp6_ctloutput(so, sopt)); 498 else if (sopt->sopt_level != IPPROTO_IPV6) 499 return (EINVAL); 500 501 error = 0; 502 503 switch (sopt->sopt_dir) { 504 case SOPT_GET: 505 switch (sopt->sopt_name) { 506 case MRT6_INIT: 507 case MRT6_DONE: 508 case MRT6_ADD_MIF: 509 case MRT6_DEL_MIF: 510 case MRT6_ADD_MFC: 511 case MRT6_DEL_MFC: 512 case MRT6_PIM: 513 error = ip6_mrouter_get(so, sopt); 514 break; 515 case IPV6_CHECKSUM: 516 error = ip6_raw_ctloutput(so, sopt); 517 break; 518 default: 519 error = ip6_ctloutput(so, sopt); 520 break; 521 } 522 break; 523 524 case SOPT_SET: 525 switch (sopt->sopt_name) { 526 case MRT6_INIT: 527 case MRT6_DONE: 528 case MRT6_ADD_MIF: 529 case MRT6_DEL_MIF: 530 case MRT6_ADD_MFC: 531 case MRT6_DEL_MFC: 532 case MRT6_PIM: 533 error = ip6_mrouter_set(so, sopt); 534 break; 535 case IPV6_CHECKSUM: 536 error = ip6_raw_ctloutput(so, sopt); 537 break; 538 default: 539 error = ip6_ctloutput(so, sopt); 540 break; 541 } 542 break; 543 } 544 545 return (error); 546} 547 548static int 549rip6_attach(struct socket *so, int proto, struct thread *td) 550{ 551 struct inpcb *inp; 552 int error, s; 553 554 inp = sotoinpcb(so); 555 if (inp) 556 panic("rip6_attach"); 557 if (td && (error = suser(td)) != 0) 558 return error; 559 560 error = soreserve(so, rip_sendspace, rip_recvspace); 561 if (error) 562 return error; 563 s = splnet(); 564 error = in_pcballoc(so, &ripcbinfo, td, "raw6inp"); 565 splx(s); 566 if (error) 567 return error; 568 inp = (struct inpcb *)so->so_pcb; 569 inp->inp_vflag |= INP_IPV6; 570 inp->in6p_ip6_nxt = (long)proto; 571 inp->in6p_hops = -1; /* use kernel default */ 572 inp->in6p_cksum = -1; 573 MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *, 574 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT); 575 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt); 576 return 0; 577} 578 579static int 580rip6_detach(struct socket *so) 581{ 582 struct inpcb *inp; 583 584 inp = sotoinpcb(so); 585 if (inp == 0) 586 panic("rip6_detach"); 587 /* xxx: RSVP */ 588 if (so == ip6_mrouter) 589 ip6_mrouter_done(); 590 if (inp->in6p_icmp6filt) { 591 FREE(inp->in6p_icmp6filt, M_PCB); 592 inp->in6p_icmp6filt = NULL; 593 } 594 in6_pcbdetach(inp); 595 return 0; 596} 597 598static int 599rip6_abort(struct socket *so) 600{ 601 soisdisconnected(so); 602 return rip6_detach(so); 603} 604 605static int 606rip6_disconnect(struct socket *so) 607{ 608 struct inpcb *inp = sotoinpcb(so); 609 610 if ((so->so_state & SS_ISCONNECTED) == 0) 611 return ENOTCONN; 612 inp->in6p_faddr = in6addr_any; 613 return rip6_abort(so); 614} 615 616static int 617rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 618{ 619 struct inpcb *inp = sotoinpcb(so); 620 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 621 struct ifaddr *ia = NULL; 622 623 if (nam->sa_len != sizeof(*addr)) 624 return EINVAL; 625 if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6) 626 return EADDRNOTAVAIL; 627#ifdef ENABLE_DEFAULT_SCOPE 628 if (addr->sin6_scope_id == 0) { /* not change if specified */ 629 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 630 } 631#endif 632 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) && 633 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0) 634 return EADDRNOTAVAIL; 635 if (ia && 636 ((struct in6_ifaddr *)ia)->ia6_flags & 637 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY| 638 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) { 639 return (EADDRNOTAVAIL); 640 } 641 inp->in6p_laddr = addr->sin6_addr; 642 return 0; 643} 644 645static int 646rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 647{ 648 struct inpcb *inp = sotoinpcb(so); 649 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 650 struct in6_addr *in6a = NULL; 651 int error = 0; 652#ifdef ENABLE_DEFAULT_SCOPE 653 struct sockaddr_in6 tmp; 654#endif 655 656 if (nam->sa_len != sizeof(*addr)) 657 return EINVAL; 658 if (TAILQ_EMPTY(&ifnet)) 659 return EADDRNOTAVAIL; 660 if (addr->sin6_family != AF_INET6) 661 return EAFNOSUPPORT; 662#ifdef ENABLE_DEFAULT_SCOPE 663 if (addr->sin6_scope_id == 0) { /* not change if specified */ 664 /* avoid overwrites */ 665 tmp = *addr; 666 addr = &tmp; 667 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 668 } 669#endif 670 /* Source address selection. XXX: need pcblookup? */ 671 in6a = in6_selectsrc(addr, inp->in6p_outputopts, 672 inp->in6p_moptions, NULL, 673 &inp->in6p_laddr, &error); 674 if (in6a == NULL) 675 return (error ? error : EADDRNOTAVAIL); 676 inp->in6p_laddr = *in6a; 677 inp->in6p_faddr = addr->sin6_addr; 678 soisconnected(so); 679 return 0; 680} 681 682static int 683rip6_shutdown(struct socket *so) 684{ 685 socantsendmore(so); 686 return 0; 687} 688 689static int 690rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 691 struct mbuf *control, struct thread *td) 692{ 693 struct inpcb *inp = sotoinpcb(so); 694 struct sockaddr_in6 tmp; 695 struct sockaddr_in6 *dst; 696 697 /* always copy sockaddr to avoid overwrites */ 698 if (so->so_state & SS_ISCONNECTED) { 699 if (nam) { 700 m_freem(m); 701 return EISCONN; 702 } 703 /* XXX */ 704 bzero(&tmp, sizeof(tmp)); 705 tmp.sin6_family = AF_INET6; 706 tmp.sin6_len = sizeof(struct sockaddr_in6); 707 bcopy(&inp->in6p_faddr, &tmp.sin6_addr, 708 sizeof(struct in6_addr)); 709 dst = &tmp; 710 } else { 711 if (nam == NULL) { 712 m_freem(m); 713 return ENOTCONN; 714 } 715 tmp = *(struct sockaddr_in6 *)nam; 716 dst = &tmp; 717 } 718#ifdef ENABLE_DEFAULT_SCOPE 719 if (dst->sin6_scope_id == 0) { /* not change if specified */ 720 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr); 721 } 722#endif 723 return rip6_output(m, so, dst, control); 724} 725 726struct pr_usrreqs rip6_usrreqs = { 727 rip6_abort, pru_accept_notsupp, rip6_attach, rip6_bind, rip6_connect, 728 pru_connect2_notsupp, in6_control, rip6_detach, rip6_disconnect, 729 pru_listen_notsupp, in6_setpeeraddr, pru_rcvd_notsupp, 730 pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown, 731 in6_setsockaddr, sosend, soreceive, sopoll, pru_sosetlabel_null 732}; 733