raw_ip6.c revision 1.17
1 /* $NetBSD: raw_ip6.c,v 1.17 2000/02/01 22:52:12 thorpej Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 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 69 #include <sys/param.h> 70 #include <sys/malloc.h> 71 #include <sys/mbuf.h> 72 #include <sys/socket.h> 73 #include <sys/protosw.h> 74 #include <sys/socketvar.h> 75 #include <sys/errno.h> 76 #include <sys/systm.h> 77 #include <sys/proc.h> 78 79 #include <net/if.h> 80 #include <net/route.h> 81 #include <net/if_types.h> 82 83 #include <netinet/in.h> 84 #include <netinet/in_var.h> 85 #include <netinet6/ip6.h> 86 #include <netinet6/ip6_var.h> 87 #include <netinet6/ip6_mroute.h> 88 #include <netinet6/icmp6.h> 89 #include <netinet6/in6_pcb.h> 90 #include <netinet6/nd6.h> 91 92 #ifdef IPSEC 93 #include <netinet6/ipsec.h> 94 #endif /*IPSEC*/ 95 96 #include <machine/stdarg.h> 97 98 #include "faith.h" 99 100 struct in6pcb rawin6pcb; 101 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 102 103 /* 104 * Raw interface to IP6 protocol. 105 */ 106 107 /* 108 * Initialize raw connection block queue. 109 */ 110 void 111 rip6_init() 112 { 113 rawin6pcb.in6p_next = rawin6pcb.in6p_prev = &rawin6pcb; 114 } 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(mp, offp, proto) 123 struct mbuf **mp; 124 int *offp, proto; 125 { 126 struct mbuf *m = *mp; 127 register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); 128 register struct in6pcb *in6p; 129 struct in6pcb *last = NULL; 130 struct sockaddr_in6 rip6src; 131 struct mbuf *opts = NULL; 132 133 #if defined(NFAITH) && 0 < NFAITH 134 if (m->m_pkthdr.rcvif) { 135 if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) { 136 /* send icmp6 host unreach? */ 137 m_freem(m); 138 return IPPROTO_DONE; 139 } 140 } 141 #endif 142 143 /* Be proactive about malicious use of IPv4 mapped address */ 144 if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) || 145 IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) { 146 /* XXX stat */ 147 m_freem(m); 148 return IPPROTO_DONE; 149 } 150 151 bzero(&rip6src, sizeof(rip6src)); 152 rip6src.sin6_len = sizeof(struct sockaddr_in6); 153 rip6src.sin6_family = AF_INET6; 154 rip6src.sin6_addr = ip6->ip6_src; 155 if (IN6_IS_SCOPE_LINKLOCAL(&rip6src.sin6_addr)) 156 rip6src.sin6_addr.s6_addr16[1] = 0; 157 if (m->m_pkthdr.rcvif) { 158 if (IN6_IS_SCOPE_LINKLOCAL(&rip6src.sin6_addr)) 159 rip6src.sin6_scope_id = m->m_pkthdr.rcvif->if_index; 160 else 161 rip6src.sin6_scope_id = 0; 162 } else 163 rip6src.sin6_scope_id = 0; 164 165 for (in6p = rawin6pcb.in6p_next; 166 in6p != &rawin6pcb; in6p = in6p->in6p_next) { 167 if (in6p->in6p_ip6.ip6_nxt && 168 in6p->in6p_ip6.ip6_nxt != proto) 169 continue; 170 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) && 171 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) 172 continue; 173 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) && 174 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src)) 175 continue; 176 if (in6p->in6p_cksum != -1 177 && in6_cksum(m, ip6->ip6_nxt, *offp, m->m_pkthdr.len - *offp)) 178 { 179 /* XXX bark something */ 180 continue; 181 } 182 if (last) { 183 struct mbuf *n; 184 if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) { 185 if (last->in6p_flags & IN6P_CONTROLOPTS) 186 ip6_savecontrol(last, &opts, ip6, n); 187 /* strip intermediate headers */ 188 m_adj(n, *offp); 189 if (sbappendaddr(&last->in6p_socket->so_rcv, 190 (struct sockaddr *)&rip6src, 191 n, opts) == 0) { 192 /* should notify about lost packet */ 193 m_freem(n); 194 if (opts) 195 m_freem(opts); 196 } else 197 sorwakeup(last->in6p_socket); 198 opts = NULL; 199 } 200 } 201 last = in6p; 202 } 203 if (last) { 204 if (last->in6p_flags & IN6P_CONTROLOPTS) 205 ip6_savecontrol(last, &opts, ip6, m); 206 /* strip intermediate headers */ 207 m_adj(m, *offp); 208 if (sbappendaddr(&last->in6p_socket->so_rcv, 209 (struct sockaddr *)&rip6src, m, opts) == 0) { 210 m_freem(m); 211 if (opts) 212 m_freem(opts); 213 } else 214 sorwakeup(last->in6p_socket); 215 } else { 216 if (proto == IPPROTO_NONE) 217 m_freem(m); 218 else { 219 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */ 220 icmp6_error(m, ICMP6_PARAM_PROB, 221 ICMP6_PARAMPROB_NEXTHEADER, 222 prvnxtp - mtod(m, char *)); 223 } 224 ip6stat.ip6s_delivered--; 225 } 226 return IPPROTO_DONE; 227 } 228 229 /* 230 * Generate IPv6 header and pass packet to ip6_output. 231 * Tack on options user may have setup with control call. 232 */ 233 int 234 #if __STDC__ 235 rip6_output(struct mbuf *m, ...) 236 #else 237 rip6_output(m, va_alist) 238 struct mbuf *m; 239 va_dcl 240 #endif 241 { 242 struct socket *so; 243 struct sockaddr_in6 *dstsock; 244 struct mbuf *control; 245 struct in6_addr *dst; 246 struct ip6_hdr *ip6; 247 struct in6pcb *in6p; 248 u_int plen = m->m_pkthdr.len; 249 int error = 0; 250 struct ip6_pktopts opt, *optp = NULL; 251 struct ifnet *oifp = NULL; 252 int type, code; /* for ICMPv6 output statistics only */ 253 int priv; 254 va_list ap; 255 256 va_start(ap, m); 257 so = va_arg(ap, struct socket *); 258 dstsock = va_arg(ap, struct sockaddr_in6 *); 259 control = va_arg(ap, struct mbuf *); 260 va_end(ap); 261 262 in6p = sotoin6pcb(so); 263 264 priv = 0; 265 { 266 struct proc *p = curproc; /* XXX */ 267 268 if (p && !suser(p->p_ucred, &p->p_acflag)) 269 priv = 1; 270 } 271 dst = &dstsock->sin6_addr; 272 if (control) { 273 if ((error = ip6_setpktoptions(control, &opt, priv)) != 0) 274 goto bad; 275 optp = &opt; 276 } else 277 optp = in6p->in6p_outputopts; 278 279 /* 280 * For an ICMPv6 packet, we should know its type and code 281 * to update statistics. 282 */ 283 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 284 struct icmp6_hdr *icmp6; 285 if (m->m_len < sizeof(struct icmp6_hdr) && 286 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) { 287 error = ENOBUFS; 288 goto bad; 289 } 290 icmp6 = mtod(m, struct icmp6_hdr *); 291 type = icmp6->icmp6_type; 292 code = icmp6->icmp6_code; 293 } 294 295 M_PREPEND(m, sizeof(*ip6), M_WAIT); 296 ip6 = mtod(m, struct ip6_hdr *); 297 298 /* 299 * Next header might not be ICMP6 but use its pseudo header anyway. 300 */ 301 ip6->ip6_dst = *dst; 302 303 /* 304 * If the scope of the destination is link-local, embed the interface 305 * index in the address. 306 * 307 * XXX advanced-api value overrides sin6_scope_id 308 */ 309 if (IN6_IS_ADDR_LINKLOCAL(&ip6->ip6_dst) || 310 IN6_IS_ADDR_MC_LINKLOCAL(&ip6->ip6_dst)) { 311 struct in6_pktinfo *pi; 312 313 /* 314 * XXX Boundary check is assumed to be already done in 315 * ip6_setpktoptions(). 316 */ 317 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) { 318 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex); 319 oifp = ifindex2ifnet[pi->ipi6_ifindex]; 320 } 321 else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && 322 in6p->in6p_moptions && 323 in6p->in6p_moptions->im6o_multicast_ifp) { 324 oifp = in6p->in6p_moptions->im6o_multicast_ifp; 325 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index); 326 } else if (dstsock->sin6_scope_id) { 327 /* boundary check */ 328 if (dstsock->sin6_scope_id < 0 329 || if_index < dstsock->sin6_scope_id) { 330 error = ENXIO; /* XXX EINVAL? */ 331 goto bad; 332 } 333 ip6->ip6_dst.s6_addr16[1] 334 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/ 335 } 336 } 337 338 /* 339 * Source address selection. 340 */ 341 { 342 struct in6_addr *in6a; 343 344 if ((in6a = in6_selectsrc(dstsock, optp, 345 in6p->in6p_moptions, 346 &in6p->in6p_route, 347 &in6p->in6p_laddr, 348 &error)) == 0) { 349 if (error == 0) 350 error = EADDRNOTAVAIL; 351 goto bad; 352 } 353 ip6->ip6_src = *in6a; 354 if (in6p->in6p_route.ro_rt) 355 oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index]; 356 } 357 358 ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK; 359 ip6->ip6_vfc &= ~IPV6_VERSION_MASK; 360 ip6->ip6_vfc |= IPV6_VERSION; 361 #if 0 /* ip6_plen will be filled in ip6_output. */ 362 ip6->ip6_plen = htons((u_short)plen); 363 #endif 364 ip6->ip6_nxt = in6p->in6p_ip6.ip6_nxt; 365 ip6->ip6_hlim = in6_selecthlim(in6p, oifp); 366 367 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 || 368 in6p->in6p_cksum != -1) { 369 struct mbuf *n; 370 int off; 371 u_int16_t *p; 372 373 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) /* XXX */ 374 375 /* compute checksum */ 376 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) 377 off = offsetof(struct icmp6_hdr, icmp6_cksum); 378 else 379 off = in6p->in6p_cksum; 380 if (plen < off + 1) { 381 error = EINVAL; 382 goto bad; 383 } 384 off += sizeof(struct ip6_hdr); 385 386 n = m; 387 while (n && n->m_len <= off) { 388 off -= n->m_len; 389 n = n->m_next; 390 } 391 if (!n) 392 goto bad; 393 p = (u_int16_t *)(mtod(n, caddr_t) + off); 394 *p = 0; 395 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen); 396 } 397 398 #ifdef IPSEC 399 m->m_pkthdr.rcvif = (struct ifnet *)so; 400 #endif /*IPSEC*/ 401 402 error = ip6_output(m, optp, &in6p->in6p_route, 0, in6p->in6p_moptions, 403 &oifp); 404 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 405 if (oifp) 406 icmp6_ifoutstat_inc(oifp, type, code); 407 icmp6stat.icp6s_outhist[type]++; 408 } 409 410 goto freectl; 411 412 bad: 413 if (m) 414 m_freem(m); 415 416 freectl: 417 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt) 418 RTFREE(optp->ip6po_route.ro_rt); 419 if (control) 420 m_freem(control); 421 return(error); 422 } 423 424 /* 425 * Raw IPv6 socket option processing. 426 */ 427 int 428 rip6_ctloutput(op, so, level, optname, m) 429 int op; 430 struct socket *so; 431 int level, optname; 432 struct mbuf **m; 433 { 434 int error = 0; 435 436 switch(level) { 437 case IPPROTO_IPV6: 438 switch(optname) { 439 case MRT6_INIT: 440 case MRT6_DONE: 441 case MRT6_ADD_MIF: 442 case MRT6_DEL_MIF: 443 case MRT6_ADD_MFC: 444 case MRT6_DEL_MFC: 445 case MRT6_PIM: 446 if (op == PRCO_SETOPT) { 447 error = ip6_mrouter_set(optname, so, *m); 448 if (*m) 449 (void)m_free(*m); 450 } else if (op == PRCO_GETOPT) { 451 error = ip6_mrouter_get(optname, so, m); 452 } else 453 error = EINVAL; 454 return (error); 455 } 456 return (ip6_ctloutput(op, so, level, optname, m)); 457 /* NOTREACHED */ 458 459 case IPPROTO_ICMPV6: 460 /* 461 * XXX: is it better to call icmp6_ctloutput() directly 462 * from protosw? 463 */ 464 return(icmp6_ctloutput(op, so, level, optname, m)); 465 466 default: 467 if (op == PRCO_SETOPT && *m) 468 (void)m_free(*m); 469 return(EINVAL); 470 } 471 } 472 473 extern u_long rip6_sendspace; 474 extern u_long rip6_recvspace; 475 476 int 477 rip6_usrreq(so, req, m, nam, control, p) 478 register struct socket *so; 479 int req; 480 struct mbuf *m, *nam, *control; 481 struct proc *p; 482 { 483 register struct in6pcb *in6p = sotoin6pcb(so); 484 int s; 485 int error = 0; 486 /* extern struct socket *ip6_mrouter; */ /* xxx */ 487 int priv; 488 489 priv = 0; 490 if (p && !suser(p->p_ucred, &p->p_acflag)) 491 priv++; 492 493 if (req == PRU_CONTROL) 494 return (in6_control(so, (u_long)m, (caddr_t)nam, 495 (struct ifnet *)control, p)); 496 497 if (req == PRU_PURGEADDR) { 498 in6_purgeaddr((struct ifaddr *)nam, (struct ifnet *)control); 499 return (0); 500 } 501 502 switch (req) { 503 case PRU_ATTACH: 504 if (in6p) 505 panic("rip6_attach"); 506 if (!priv) { 507 error = EACCES; 508 break; 509 } 510 s = splsoftnet(); 511 if ((error = soreserve(so, rip6_sendspace, rip6_recvspace)) || 512 (error = in6_pcballoc(so, &rawin6pcb))) { 513 splx(s); 514 break; 515 } 516 splx(s); 517 in6p = sotoin6pcb(so); 518 in6p->in6p_ip6.ip6_nxt = (long)nam; 519 in6p->in6p_cksum = -1; 520 #ifdef IPSEC 521 error = ipsec_init_policy(so, &in6p->in6p_sp); 522 if (error != 0) { 523 in6_pcbdetach(in6p); 524 break; 525 } 526 #endif /*IPSEC*/ 527 528 MALLOC(in6p->in6p_icmp6filt, struct icmp6_filter *, 529 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT); 530 if (in6p->in6p_icmp6filt == NULL) { 531 in6_pcbdetach(in6p); 532 error = ENOMEM; 533 break; 534 } 535 ICMP6_FILTER_SETPASSALL(in6p->in6p_icmp6filt); 536 break; 537 538 case PRU_DISCONNECT: 539 if ((so->so_state & SS_ISCONNECTED) == 0) { 540 error = ENOTCONN; 541 break; 542 } 543 in6p->in6p_faddr = in6addr_any; 544 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 545 break; 546 547 case PRU_ABORT: 548 soisdisconnected(so); 549 /* Fallthrough */ 550 case PRU_DETACH: 551 if (in6p == 0) 552 panic("rip6_detach"); 553 if (so == ip6_mrouter) 554 ip6_mrouter_done(); 555 /* xxx: RSVP */ 556 if (in6p->in6p_icmp6filt) { 557 FREE(in6p->in6p_icmp6filt, M_PCB); 558 in6p->in6p_icmp6filt = NULL; 559 } 560 in6_pcbdetach(in6p); 561 break; 562 563 case PRU_BIND: 564 { 565 struct sockaddr_in6 *addr = mtod(nam, struct sockaddr_in6 *); 566 struct ifaddr *ia = NULL; 567 568 if (nam->m_len != sizeof(*addr)) { 569 error = EINVAL; 570 break; 571 } 572 if ((ifnet.tqh_first == 0) || 573 (addr->sin6_family != AF_INET6) || 574 (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) && 575 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0)) { 576 error = EADDRNOTAVAIL; 577 break; 578 } 579 if (ia && 580 ((struct in6_ifaddr *)ia)->ia6_flags & 581 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY| 582 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) { 583 error = EADDRNOTAVAIL; 584 break; 585 } 586 in6p->in6p_laddr = addr->sin6_addr; 587 break; 588 } 589 590 case PRU_CONNECT: 591 { 592 struct sockaddr_in6 *addr = mtod(nam, struct sockaddr_in6 *); 593 struct in6_addr *in6a = NULL; 594 595 if (nam->m_len != sizeof(*addr)) { 596 error = EINVAL; 597 break; 598 } 599 if (ifnet.tqh_first == 0) { 600 error = EADDRNOTAVAIL; 601 break; 602 } 603 if (addr->sin6_family != AF_INET6) { 604 error = EAFNOSUPPORT; 605 break; 606 } 607 608 /* Source address selection. XXX: need pcblookup? */ 609 in6a = in6_selectsrc(addr, in6p->in6p_outputopts, 610 in6p->in6p_moptions, 611 &in6p->in6p_route, 612 &in6p->in6p_laddr, 613 &error); 614 if (in6a == NULL) { 615 if (error == 0) 616 error = EADDRNOTAVAIL; 617 break; 618 } 619 in6p->in6p_laddr = *in6a; 620 in6p->in6p_faddr = addr->sin6_addr; 621 soisconnected(so); 622 break; 623 } 624 625 case PRU_CONNECT2: 626 error = EOPNOTSUPP; 627 break; 628 629 /* 630 * Mark the connection as being incapable of futther input. 631 */ 632 case PRU_SHUTDOWN: 633 socantsendmore(so); 634 break; 635 /* 636 * Ship a packet out. The appropriate raw output 637 * routine handles any messaging necessary. 638 */ 639 case PRU_SEND: 640 { 641 struct sockaddr_in6 tmp; 642 struct sockaddr_in6 *dst; 643 644 if (so->so_state & SS_ISCONNECTED) { 645 if (nam) { 646 error = EISCONN; 647 break; 648 } 649 /* XXX */ 650 bzero(&tmp, sizeof(tmp)); 651 tmp.sin6_family = AF_INET6; 652 tmp.sin6_len = sizeof(struct sockaddr_in6); 653 bcopy(&in6p->in6p_faddr, &tmp.sin6_addr, 654 sizeof(struct in6_addr)); 655 dst = &tmp; 656 } else { 657 if (nam == NULL) { 658 error = ENOTCONN; 659 break; 660 } 661 dst = mtod(nam, struct sockaddr_in6 *); 662 } 663 error = rip6_output(m, so, dst, control); 664 m = NULL; 665 break; 666 } 667 668 case PRU_SENSE: 669 /* 670 * stat: don't bother with a blocksize 671 */ 672 return(0); 673 /* 674 * Not supported. 675 */ 676 case PRU_RCVOOB: 677 case PRU_RCVD: 678 case PRU_LISTEN: 679 case PRU_ACCEPT: 680 case PRU_SENDOOB: 681 error = EOPNOTSUPP; 682 break; 683 684 case PRU_SOCKADDR: 685 in6_setsockaddr(in6p, nam); 686 break; 687 688 case PRU_PEERADDR: 689 in6_setpeeraddr(in6p, nam); 690 break; 691 692 default: 693 panic("rip6_usrreq"); 694 } 695 if (m != NULL) 696 m_freem(m); 697 return(error); 698 } 699
Indexes created Tue Sep 23 14:10:03 GMT 2025