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 */ 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. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)raw_ip.c 8.2 (Berkeley) 1/4/94 61 */ 62 63 #include "opt_inet6.h" 64 65 #include <sys/param.h> 66 #include <sys/malloc.h> 67 #include <sys/proc.h> 68 #include <sys/caps.h> 69 #include <sys/mbuf.h> 70 #include <sys/socket.h> 71 #include <sys/jail.h> 72 #include <sys/protosw.h> 73 #include <sys/socketvar.h> 74 #include <sys/errno.h> 75 #include <sys/systm.h> 76 77 #include <sys/thread2.h> 78 #include <sys/socketvar2.h> 79 #include <sys/msgport2.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 #include <machine/stdarg.h> 102 103 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 104 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 105 106 /* 107 * Raw interface to IP6 protocol. 108 */ 109 110 extern struct inpcbinfo ripcbinfo; 111 extern u_long rip_sendspace; 112 extern u_long rip_recvspace; 113 114 struct rip6stat rip6stat; 115 116 /* 117 * Setup generic address and protocol structures 118 * for raw_input routine, then pass them along with 119 * mbuf chain. 120 */ 121 int 122 rip6_input(struct mbuf **mp, int *offp, int proto) 123 { 124 struct mbuf *m = *mp; 125 struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); 126 struct inpcb *in6p; 127 struct inpcb *last = NULL; 128 struct mbuf *opts = NULL; 129 struct sockaddr_in6 rip6src; 130 131 rip6stat.rip6s_ipackets++; 132 133 init_sin6(&rip6src, m); /* general init */ 134 135 LIST_FOREACH(in6p, &ripcbinfo.pcblisthead, inp_list) { 136 if (in6p->in6p_flags & INP_PLACEMARKER) 137 continue; 138 if (!INP_ISIPV6(in6p)) 139 continue; 140 if (in6p->in6p_ip6_nxt && 141 in6p->in6p_ip6_nxt != proto) 142 continue; 143 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) && 144 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) 145 continue; 146 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) && 147 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src)) 148 continue; 149 if (in6p->in6p_cksum != -1) { 150 rip6stat.rip6s_isum++; 151 if (in6_cksum(m, ip6->ip6_nxt, *offp, 152 m->m_pkthdr.len - *offp)) { 153 rip6stat.rip6s_badsum++; 154 continue; 155 } 156 } 157 if (last) { 158 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); 159 160 if (n) { 161 struct socket *so; 162 163 so = last->in6p_socket; 164 if ((last->in6p_flags & IN6P_CONTROLOPTS) || 165 (so->so_options & SO_TIMESTAMP)) { 166 ip6_savecontrol(last, &opts, ip6, n); 167 } 168 /* strip intermediate headers */ 169 m_adj(n, *offp); 170 lwkt_gettoken(&so->so_rcv.ssb_token); 171 if (ssb_appendaddr(&so->so_rcv, 172 (struct sockaddr *)&rip6src, 173 n, opts) == 0) { 174 m_freem(n); 175 if (opts) 176 m_freem(opts); 177 rip6stat.rip6s_fullsock++; 178 soroverflow(so); 179 } else { 180 sorwakeup(so); 181 } 182 lwkt_reltoken(&so->so_rcv.ssb_token); 183 opts = NULL; 184 } 185 } 186 last = in6p; 187 } 188 if (last) { 189 struct socket *so; 190 191 so = last->in6p_socket; 192 if ((last->in6p_flags & IN6P_CONTROLOPTS) || 193 (so->so_options & SO_TIMESTAMP)) { 194 ip6_savecontrol(last, &opts, ip6, m); 195 } 196 /* strip intermediate headers */ 197 m_adj(m, *offp); 198 lwkt_gettoken(&so->so_rcv.ssb_token); 199 if (ssb_appendaddr(&so->so_rcv, (struct sockaddr *)&rip6src, 200 m, opts) == 0) { 201 m_freem(m); 202 if (opts) 203 m_freem(opts); 204 rip6stat.rip6s_fullsock++; 205 soroverflow(so); 206 } else { 207 sorwakeup(so); 208 } 209 lwkt_reltoken(&so->so_rcv.ssb_token); 210 } else { 211 rip6stat.rip6s_nosock++; 212 if (m->m_flags & M_MCAST) 213 rip6stat.rip6s_nosockmcast++; 214 if (proto == IPPROTO_NONE) 215 m_freem(m); 216 else { 217 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */ 218 icmp6_error(m, ICMP6_PARAM_PROB, 219 ICMP6_PARAMPROB_NEXTHEADER, 220 prvnxtp - mtod(m, char *)); 221 } 222 ip6stat.ip6s_delivered--; 223 } 224 return IPPROTO_DONE; 225 } 226 227 void 228 rip6_ctlinput(netmsg_t msg) 229 { 230 int cmd = msg->ctlinput.nm_cmd; 231 struct sockaddr *sa = msg->ctlinput.nm_arg; 232 void *d = msg->ctlinput.nm_extra; 233 struct ip6ctlparam *ip6cp = NULL; 234 const struct sockaddr_in6 *sa6_src = NULL; 235 inp_notify_t notify = in6_rtchange; 236 237 if (sa->sa_family != AF_INET6 || 238 sa->sa_len != sizeof(struct sockaddr_in6)) 239 goto out; 240 241 if ((unsigned)cmd >= PRC_NCMDS) 242 goto out; 243 if (PRC_IS_REDIRECT(cmd)) 244 notify = in6_rtchange, d = NULL; 245 else if (cmd == PRC_HOSTDEAD) 246 d = NULL; 247 else if (inet6ctlerrmap[cmd] == 0) 248 goto out; 249 250 /* if the parameter is from icmp6, decode it. */ 251 if (d != NULL) { 252 ip6cp = (struct ip6ctlparam *)d; 253 sa6_src = ip6cp->ip6c_src; 254 } else { 255 sa6_src = &sa6_any; 256 } 257 258 in6_pcbnotify(&ripcbinfo, sa, 0, 259 (const struct sockaddr *)sa6_src, 0, cmd, 0, notify); 260 out: 261 lwkt_replymsg(&msg->ctlinput.base.lmsg, 0); 262 } 263 264 /* 265 * Generate IPv6 header and pass packet to ip6_output. 266 * Tack on options user may have setup with control call. 267 */ 268 int 269 rip6_output(struct mbuf *m, struct socket *so, ...) 270 { 271 struct sockaddr_in6 *dstsock; 272 struct mbuf *control; 273 struct in6_addr *dst; 274 struct ip6_hdr *ip6; 275 struct inpcb *in6p; 276 u_int plen = m->m_pkthdr.len; 277 int error = 0; 278 struct ip6_pktopts opt, *optp = NULL; 279 struct ifnet *oifp = NULL; 280 int type = 0, code = 0; /* for ICMPv6 output statistics only */ 281 int priv = 0; 282 __va_list ap; 283 284 __va_start(ap, so); 285 dstsock = __va_arg(ap, struct sockaddr_in6 *); 286 control = __va_arg(ap, struct mbuf *); 287 __va_end(ap); 288 289 if (IN6_IS_ADDR_V4MAPPED(&dstsock->sin6_addr)) { 290 error = EADDRNOTAVAIL; 291 goto bad; 292 } 293 294 in6p = so->so_pcb; 295 296 priv = 0; 297 if (so->so_cred->cr_uid == 0) 298 priv = 1; 299 dst = &dstsock->sin6_addr; 300 if (control) { 301 if ((error = ip6_setpktoptions(control, &opt, 302 in6p->in6p_outputopts, 303 so->so_proto->pr_protocol, priv)) != 0) 304 goto bad; 305 optp = &opt; 306 } else 307 optp = in6p->in6p_outputopts; 308 309 /* 310 * For an ICMPv6 packet, we should know its type and code 311 * to update statistics. 312 */ 313 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 314 struct icmp6_hdr *icmp6; 315 if (m->m_len < sizeof(struct icmp6_hdr) && 316 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) { 317 error = ENOBUFS; 318 goto bad; 319 } 320 icmp6 = mtod(m, struct icmp6_hdr *); 321 type = icmp6->icmp6_type; 322 code = icmp6->icmp6_code; 323 } 324 325 M_PREPEND(m, sizeof(*ip6), M_WAITOK); 326 ip6 = mtod(m, struct ip6_hdr *); 327 328 /* 329 * Next header might not be ICMP6 but use its pseudo header anyway. 330 */ 331 ip6->ip6_dst = *dst; 332 333 /* 334 * If the scope of the destination is link-local, embed the interface 335 * index in the address. 336 * 337 * XXX advanced-api value overrides sin6_scope_id 338 */ 339 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) { 340 struct in6_pktinfo *pi; 341 342 /* 343 * XXX Boundary check is assumed to be already done in 344 * ip6_setpktoptions(). 345 */ 346 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) { 347 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex); 348 oifp = ifindex2ifnet[pi->ipi6_ifindex]; 349 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && 350 in6p->in6p_moptions && 351 in6p->in6p_moptions->im6o_multicast_ifp) { 352 oifp = in6p->in6p_moptions->im6o_multicast_ifp; 353 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index); 354 } else if (dstsock->sin6_scope_id) { 355 /* boundary check */ 356 if (dstsock->sin6_scope_id < 0 || 357 if_index < dstsock->sin6_scope_id) { 358 error = ENXIO; /* XXX EINVAL? */ 359 goto bad; 360 } 361 ip6->ip6_dst.s6_addr16[1] = 362 htons(dstsock->sin6_scope_id & 0xffff); /* XXX */ 363 } 364 } 365 366 /* 367 * Source address selection. 368 */ 369 { 370 struct in6_addr *in6a; 371 372 if ((in6a = in6_selectsrc(dstsock, optp, in6p->in6p_moptions, 373 &in6p->in6p_route, &in6p->in6p_laddr, &error, NULL)) 374 == NULL) { 375 if (error == 0) 376 error = EADDRNOTAVAIL; 377 goto bad; 378 } 379 ip6->ip6_src = *in6a; 380 if (in6p->in6p_route.ro_rt) 381 oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index]; 382 } 383 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) | 384 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK); 385 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) | 386 (IPV6_VERSION & IPV6_VERSION_MASK); 387 /* ip6_plen will be filled in ip6_output, so not fill it here. */ 388 ip6->ip6_nxt = in6p->in6p_ip6_nxt; 389 ip6->ip6_hlim = in6_selecthlim(in6p, oifp); 390 391 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 || 392 in6p->in6p_cksum != -1) { 393 struct mbuf *n; 394 int off; 395 u_int16_t *p; 396 397 /* compute checksum */ 398 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) 399 off = offsetof(struct icmp6_hdr, icmp6_cksum); 400 else 401 off = in6p->in6p_cksum; 402 if (plen < off + 1) { 403 error = EINVAL; 404 goto bad; 405 } 406 off += sizeof(struct ip6_hdr); 407 408 n = m; 409 while (n && n->m_len <= off) { 410 off -= n->m_len; 411 n = n->m_next; 412 } 413 if (!n) 414 goto bad; 415 p = (u_int16_t *)(mtod(n, caddr_t) + off); 416 *p = 0; 417 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen); 418 } 419 420 error = ip6_output(m, optp, &in6p->in6p_route, 0, 421 in6p->in6p_moptions, &oifp, in6p); 422 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 423 if (oifp) 424 icmp6_ifoutstat_inc(oifp, type, code); 425 icmp6stat.icp6s_outhist[type]++; 426 } else 427 rip6stat.rip6s_opackets++; 428 429 goto freectl; 430 431 bad: 432 if (m) 433 m_freem(m); 434 435 freectl: 436 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt) 437 RTFREE(optp->ip6po_route.ro_rt); 438 if (control) { 439 if (optp == &opt) 440 ip6_clearpktopts(optp, -1); 441 m_freem(control); 442 } 443 return (error); 444 } 445 446 /* 447 * Raw IPv6 socket option processing. 448 */ 449 void 450 rip6_ctloutput(netmsg_t msg) 451 { 452 struct socket *so = msg->ctloutput.base.nm_so; 453 struct sockopt *sopt = msg->ctloutput.nm_sopt; 454 int error; 455 456 if (sopt->sopt_level == IPPROTO_ICMPV6) { 457 /* 458 * XXX: is it better to call icmp6_ctloutput() directly 459 * from protosw? 460 */ 461 icmp6_ctloutput(msg); 462 /* msg invalid now */ 463 return; 464 } 465 if (sopt->sopt_level != IPPROTO_IPV6) { 466 error = EINVAL; 467 goto out; 468 } 469 470 error = 0; 471 472 switch (sopt->sopt_dir) { 473 case SOPT_GET: 474 switch (sopt->sopt_name) { 475 case MRT6_INIT: 476 case MRT6_DONE: 477 case MRT6_ADD_MIF: 478 case MRT6_DEL_MIF: 479 case MRT6_ADD_MFC: 480 case MRT6_DEL_MFC: 481 case MRT6_PIM: 482 error = ip6_mrouter_get(so, sopt); 483 break; 484 case IPV6_CHECKSUM: 485 error = ip6_raw_ctloutput(so, sopt); 486 break; 487 default: 488 error = ip6_ctloutput(so, sopt); 489 break; 490 } 491 break; 492 493 case SOPT_SET: 494 switch (sopt->sopt_name) { 495 case MRT6_INIT: 496 case MRT6_DONE: 497 case MRT6_ADD_MIF: 498 case MRT6_DEL_MIF: 499 case MRT6_ADD_MFC: 500 case MRT6_DEL_MFC: 501 case MRT6_PIM: 502 error = ip6_mrouter_set(so, sopt); 503 break; 504 case IPV6_CHECKSUM: 505 error = ip6_raw_ctloutput(so, sopt); 506 break; 507 default: 508 error = ip6_ctloutput(so, sopt); 509 break; 510 } 511 break; 512 } 513 out: 514 lwkt_replymsg(&msg->ctloutput.base.lmsg, error); 515 } 516 517 static void 518 rip6_attach(netmsg_t msg) 519 { 520 struct socket *so = msg->attach.base.nm_so; 521 int proto = msg->attach.nm_proto; 522 struct pru_attach_info *ai = msg->attach.nm_ai; 523 struct inpcb *inp; 524 int error; 525 526 inp = so->so_pcb; 527 if (inp) 528 panic("rip6_attach"); 529 error = caps_priv_check(ai->p_ucred, 530 SYSCAP_NONET_RAW | __SYSCAP_NULLCRED); 531 if (error) 532 goto out; 533 534 error = soreserve(so, rip_sendspace, rip_recvspace, ai->sb_rlimit); 535 if (error) 536 goto out; 537 crit_enter(); 538 error = in_pcballoc(so, &ripcbinfo); 539 crit_exit(); 540 if (error) 541 goto out; 542 inp = (struct inpcb *)so->so_pcb; 543 inp->in6p_ip6_nxt = (long)proto; 544 inp->in6p_hops = -1; /* use kernel default */ 545 inp->in6p_cksum = -1; 546 inp->in6p_icmp6filt = kmalloc(sizeof(struct icmp6_filter), M_PCB, 547 M_NOWAIT); 548 if (inp->in6p_icmp6filt != NULL) 549 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt); 550 error = 0; 551 out: 552 lwkt_replymsg(&msg->attach.base.lmsg, error); 553 } 554 555 static void 556 rip6_detach(netmsg_t msg) 557 { 558 struct socket *so = msg->detach.base.nm_so; 559 struct inpcb *inp; 560 561 inp = so->so_pcb; 562 if (inp == NULL) 563 panic("rip6_detach"); 564 /* xxx: RSVP */ 565 if (so == ip6_mrouter) 566 ip6_mrouter_done(); 567 if (inp->in6p_icmp6filt) { 568 kfree(inp->in6p_icmp6filt, M_PCB); 569 inp->in6p_icmp6filt = NULL; 570 } 571 in6_pcbdetach(inp); 572 lwkt_replymsg(&msg->detach.base.lmsg, 0); 573 } 574 575 /* 576 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort() 577 * will sofree() it when we return. 578 */ 579 static void 580 rip6_abort(netmsg_t msg) 581 { 582 soisdisconnected(msg->abort.base.nm_so); 583 rip6_detach(msg); 584 /* msg invalid now */ 585 } 586 587 static void 588 rip6_disconnect(netmsg_t msg) 589 { 590 struct socket *so = msg->disconnect.base.nm_so; 591 struct inpcb *inp = so->so_pcb; 592 593 if (so->so_state & SS_ISCONNECTED) { 594 inp->in6p_faddr = kin6addr_any; 595 soreference(so); 596 rip6_abort(msg); 597 /* msg invalid now */ 598 sofree(so); 599 return; 600 } 601 lwkt_replymsg(&msg->disconnect.base.lmsg, ENOTCONN); 602 } 603 604 static void 605 rip6_bind(netmsg_t msg) 606 { 607 struct socket *so = msg->bind.base.nm_so; 608 struct sockaddr *nam = msg->bind.nm_nam; 609 struct inpcb *inp = so->so_pcb; 610 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 611 struct ifaddr *ia = NULL; 612 int error; 613 614 if (nam->sa_len != sizeof(*addr)) { 615 error = EINVAL; 616 goto out; 617 } 618 if (ifnet_array_isempty() || addr->sin6_family != AF_INET6) { 619 error = EADDRNOTAVAIL; 620 goto out; 621 } 622 if (IN6_IS_ADDR_V4MAPPED(&addr->sin6_addr)) { 623 error = EADDRNOTAVAIL; 624 goto out; 625 } 626 #ifdef ENABLE_DEFAULT_SCOPE 627 if (addr->sin6_scope_id == 0) { /* not change if specified */ 628 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 629 } 630 #endif 631 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) && 632 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == NULL) { 633 error = EADDRNOTAVAIL; 634 goto out; 635 } 636 if (ia && 637 ((struct in6_ifaddr *)ia)->ia6_flags & 638 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY| 639 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) { 640 error = EADDRNOTAVAIL; 641 goto out; 642 } 643 inp->in6p_laddr = addr->sin6_addr; 644 error = 0; 645 out: 646 lwkt_replymsg(&msg->bind.base.lmsg, error); 647 } 648 649 static void 650 rip6_connect(netmsg_t msg) 651 { 652 struct socket *so = msg->connect.base.nm_so; 653 struct sockaddr *nam = msg->connect.nm_nam; 654 struct inpcb *inp = so->so_pcb; 655 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 656 struct in6_addr *in6a = NULL; 657 int error = 0; 658 #ifdef ENABLE_DEFAULT_SCOPE 659 struct sockaddr_in6 tmp; 660 #endif 661 662 if (nam->sa_len != sizeof(*addr)) { 663 error = EINVAL; 664 goto out; 665 } 666 if (ifnet_array_isempty()) { 667 error = EADDRNOTAVAIL; 668 goto out; 669 } 670 if (addr->sin6_family != AF_INET6) { 671 error = EAFNOSUPPORT; 672 goto out; 673 } 674 if (IN6_IS_ADDR_V4MAPPED(&addr->sin6_addr)) { 675 error = EADDRNOTAVAIL; 676 goto out; 677 } 678 #ifdef ENABLE_DEFAULT_SCOPE 679 if (addr->sin6_scope_id == 0) { /* not change if specified */ 680 /* avoid overwrites */ 681 tmp = *addr; 682 addr = &tmp; 683 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 684 } 685 #endif 686 /* Source address selection. XXX: need pcblookup? */ 687 in6a = in6_selectsrc(addr, inp->in6p_outputopts, 688 inp->in6p_moptions, &inp->in6p_route, 689 &inp->in6p_laddr, &error, NULL); 690 if (in6a == NULL) { 691 if (error == 0) 692 error = EADDRNOTAVAIL; 693 } else { 694 inp->in6p_laddr = *in6a; 695 inp->in6p_faddr = addr->sin6_addr; 696 soisconnected(so); 697 error = 0; 698 } 699 out: 700 lwkt_replymsg(&msg->connect.base.lmsg, error); 701 } 702 703 static void 704 rip6_shutdown(netmsg_t msg) 705 { 706 socantsendmore(msg->shutdown.base.nm_so); 707 lwkt_replymsg(&msg->shutdown.base.lmsg, 0); 708 } 709 710 static void 711 rip6_send(netmsg_t msg) 712 { 713 struct socket *so = msg->send.base.nm_so; 714 struct mbuf *m = msg->send.nm_m; 715 struct sockaddr *nam = msg->send.nm_addr; 716 struct mbuf *control = msg->send.nm_control; 717 struct inpcb *inp = so->so_pcb; 718 struct sockaddr_in6 tmp; 719 struct sockaddr_in6 *dst; 720 int error; 721 722 /* always copy sockaddr to avoid overwrites */ 723 if (so->so_state & SS_ISCONNECTED) { 724 if (nam) { 725 m_freem(m); 726 error = EISCONN; 727 goto out; 728 } 729 /* XXX */ 730 bzero(&tmp, sizeof(tmp)); 731 tmp.sin6_family = AF_INET6; 732 tmp.sin6_len = sizeof(struct sockaddr_in6); 733 bcopy(&inp->in6p_faddr, &tmp.sin6_addr, 734 sizeof(struct in6_addr)); 735 dst = &tmp; 736 } else { 737 if (nam == NULL) { 738 m_freem(m); 739 error = ENOTCONN; 740 goto out; 741 } 742 tmp = *(struct sockaddr_in6 *)nam; 743 dst = &tmp; 744 } 745 #ifdef ENABLE_DEFAULT_SCOPE 746 if (dst->sin6_scope_id == 0) { /* not change if specified */ 747 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr); 748 } 749 #endif 750 error = rip6_output(m, so, dst, control); 751 out: 752 lwkt_replymsg(&msg->send.base.lmsg, error); 753 } 754 755 struct pr_usrreqs rip6_usrreqs = { 756 .pru_abort = rip6_abort, 757 .pru_accept = pr_generic_notsupp, 758 .pru_attach = rip6_attach, 759 .pru_bind = rip6_bind, 760 .pru_connect = rip6_connect, 761 .pru_connect2 = pr_generic_notsupp, 762 .pru_control = in6_control_dispatch, 763 .pru_detach = rip6_detach, 764 .pru_disconnect = rip6_disconnect, 765 .pru_listen = pr_generic_notsupp, 766 .pru_peeraddr = in6_setpeeraddr_dispatch, 767 .pru_rcvd = pr_generic_notsupp, 768 .pru_rcvoob = pr_generic_notsupp, 769 .pru_send = rip6_send, 770 .pru_sense = pru_sense_null, 771 .pru_shutdown = rip6_shutdown, 772 .pru_sockaddr = in6_setsockaddr_dispatch, 773 .pru_sosend = sosend, 774 .pru_soreceive = soreceive 775 }; 776