raw_ip6.c revision 1.11.8.1
1 /* $NetBSD: raw_ip6.c,v 1.11.8.1 1999/12/27 18:36:28 wrstuden 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 #ifdef __NetBSD__ /*XXX*/ 68 #include "opt_ipsec.h" 69 #endif 70 71 #include <sys/param.h> 72 #include <sys/malloc.h> 73 #include <sys/mbuf.h> 74 #include <sys/socket.h> 75 #include <sys/protosw.h> 76 #include <sys/socketvar.h> 77 #include <sys/errno.h> 78 #include <sys/systm.h> 79 #ifdef __NetBSD__ 80 #include <sys/proc.h> 81 #endif 82 83 #include <net/if.h> 84 #include <net/route.h> 85 #include <net/if_types.h> 86 87 #include <netinet/in.h> 88 #include <netinet/in_var.h> 89 #include <netinet6/ip6.h> 90 #include <netinet6/ip6_var.h> 91 #include <netinet6/ip6_mroute.h> 92 #include <netinet6/icmp6.h> 93 #include <netinet6/in6_pcb.h> 94 #include <netinet6/nd6.h> 95 96 #ifdef IPSEC 97 #include <netinet6/ipsec.h> 98 #endif /*IPSEC*/ 99 100 #include <machine/stdarg.h> 101 102 #include "faith.h" 103 104 struct in6pcb rawin6pcb; 105 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 106 107 /* 108 * Raw interface to IP6 protocol. 109 */ 110 111 /* 112 * Initialize raw connection block queue. 113 */ 114 void 115 rip6_init() 116 { 117 rawin6pcb.in6p_next = rawin6pcb.in6p_prev = &rawin6pcb; 118 } 119 120 /* 121 * Setup generic address and protocol structures 122 * for raw_input routine, then pass them along with 123 * mbuf chain. 124 */ 125 int 126 rip6_input(mp, offp, proto) 127 struct mbuf **mp; 128 int *offp, proto; 129 { 130 struct mbuf *m = *mp; 131 register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); 132 register struct in6pcb *in6p; 133 struct in6pcb *last = NULL; 134 struct sockaddr_in6 rip6src; 135 struct mbuf *opts = NULL; 136 137 #if defined(NFAITH) && 0 < NFAITH 138 if (m->m_pkthdr.rcvif) { 139 if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) { 140 /* send icmp6 host unreach? */ 141 m_freem(m); 142 return IPPROTO_DONE; 143 } 144 } 145 #endif 146 bzero(&rip6src, sizeof(rip6src)); 147 rip6src.sin6_len = sizeof(struct sockaddr_in6); 148 rip6src.sin6_family = AF_INET6; 149 rip6src.sin6_addr = ip6->ip6_src; 150 if (IN6_IS_SCOPE_LINKLOCAL(&rip6src.sin6_addr)) 151 rip6src.sin6_addr.s6_addr16[1] = 0; 152 if (m->m_pkthdr.rcvif) { 153 if (IN6_IS_SCOPE_LINKLOCAL(&rip6src.sin6_addr)) 154 rip6src.sin6_scope_id = m->m_pkthdr.rcvif->if_index; 155 else 156 rip6src.sin6_scope_id = 0; 157 } else 158 rip6src.sin6_scope_id = 0; 159 160 for (in6p = rawin6pcb.in6p_next; 161 in6p != &rawin6pcb; in6p = in6p->in6p_next) { 162 if (in6p->in6p_ip6.ip6_nxt && 163 in6p->in6p_ip6.ip6_nxt != proto) 164 continue; 165 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) && 166 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) 167 continue; 168 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) && 169 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src)) 170 continue; 171 if (in6p->in6p_cksum != -1 172 && in6_cksum(m, ip6->ip6_nxt, *offp, m->m_pkthdr.len - *offp)) 173 { 174 /* XXX bark something */ 175 continue; 176 } 177 if (last) { 178 struct mbuf *n; 179 if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) { 180 if (last->in6p_flags & IN6P_CONTROLOPTS) 181 ip6_savecontrol(last, &opts, ip6, n); 182 /* strip intermediate headers */ 183 m_adj(n, *offp); 184 if (sbappendaddr(&last->in6p_socket->so_rcv, 185 (struct sockaddr *)&rip6src, 186 n, opts) == 0) { 187 /* should notify about lost packet */ 188 m_freem(n); 189 if (opts) 190 m_freem(opts); 191 } else 192 sorwakeup(last->in6p_socket); 193 opts = NULL; 194 } 195 } 196 last = in6p; 197 } 198 if (last) { 199 if (last->in6p_flags & IN6P_CONTROLOPTS) 200 ip6_savecontrol(last, &opts, ip6, m); 201 /* strip intermediate headers */ 202 m_adj(m, *offp); 203 if (sbappendaddr(&last->in6p_socket->so_rcv, 204 (struct sockaddr *)&rip6src, m, opts) == 0) { 205 m_freem(m); 206 if (opts) 207 m_freem(opts); 208 } else 209 sorwakeup(last->in6p_socket); 210 } else { 211 if (proto == IPPROTO_NONE) 212 m_freem(m); 213 else { 214 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */ 215 icmp6_error(m, ICMP6_PARAM_PROB, 216 ICMP6_PARAMPROB_NEXTHEADER, 217 prvnxtp - mtod(m, char *)); 218 } 219 ip6stat.ip6s_delivered--; 220 } 221 return IPPROTO_DONE; 222 } 223 224 /* 225 * Generate IPv6 header and pass packet to ip6_output. 226 * Tack on options user may have setup with control call. 227 */ 228 int 229 #if __STDC__ 230 rip6_output(struct mbuf *m, ...) 231 #else 232 rip6_output(m, va_alist) 233 struct mbuf *m; 234 va_dcl 235 #endif 236 { 237 struct socket *so; 238 struct sockaddr_in6 *dstsock; 239 struct mbuf *control; 240 struct in6_addr *dst; 241 struct ip6_hdr *ip6; 242 struct in6pcb *in6p; 243 u_int plen = m->m_pkthdr.len; 244 int error = 0; 245 struct ip6_pktopts opt, *optp = NULL; 246 struct ifnet *oifp = NULL; 247 int type, code; /* for ICMPv6 output statistics only */ 248 int priv; 249 va_list ap; 250 251 va_start(ap, m); 252 so = va_arg(ap, struct socket *); 253 dstsock = va_arg(ap, struct sockaddr_in6 *); 254 control = va_arg(ap, struct mbuf *); 255 va_end(ap); 256 257 in6p = sotoin6pcb(so); 258 259 priv = 0; 260 { 261 struct proc *p = curproc; /* XXX */ 262 263 if (p && !suser(p->p_ucred, &p->p_acflag)) 264 priv = 1; 265 } 266 dst = &dstsock->sin6_addr; 267 if (control) { 268 if ((error = ip6_setpktoptions(control, &opt, priv)) != 0) 269 goto bad; 270 optp = &opt; 271 } else 272 optp = in6p->in6p_outputopts; 273 274 /* 275 * For an ICMPv6 packet, we should know its type and code 276 * to update statistics. 277 */ 278 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 279 struct icmp6_hdr *icmp6; 280 if (m->m_len < sizeof(struct icmp6_hdr) && 281 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) { 282 error = ENOBUFS; 283 goto bad; 284 } 285 icmp6 = mtod(m, struct icmp6_hdr *); 286 type = icmp6->icmp6_type; 287 code = icmp6->icmp6_code; 288 } 289 290 M_PREPEND(m, sizeof(*ip6), M_WAIT); 291 ip6 = mtod(m, struct ip6_hdr *); 292 293 /* 294 * Next header might not be ICMP6 but use its pseudo header anyway. 295 */ 296 ip6->ip6_dst = *dst; 297 298 /* 299 * If the scope of the destination is link-local, embed the interface 300 * index in the address. 301 * 302 * XXX advanced-api value overrides sin6_scope_id 303 */ 304 if (IN6_IS_ADDR_LINKLOCAL(&ip6->ip6_dst) || 305 IN6_IS_ADDR_MC_LINKLOCAL(&ip6->ip6_dst)) { 306 struct in6_pktinfo *pi; 307 308 /* 309 * XXX Boundary check is assumed to be already done in 310 * ip6_setpktoptions(). 311 */ 312 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) { 313 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex); 314 oifp = ifindex2ifnet[pi->ipi6_ifindex]; 315 } 316 else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && 317 in6p->in6p_moptions && 318 in6p->in6p_moptions->im6o_multicast_ifp) { 319 oifp = in6p->in6p_moptions->im6o_multicast_ifp; 320 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index); 321 } else if (dstsock->sin6_scope_id) { 322 /* boundary check */ 323 if (dstsock->sin6_scope_id < 0 324 || if_index < dstsock->sin6_scope_id) { 325 error = ENXIO; /* XXX EINVAL? */ 326 goto bad; 327 } 328 ip6->ip6_dst.s6_addr16[1] 329 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/ 330 } 331 } 332 333 /* 334 * Source address selection. 335 */ 336 { 337 struct in6_addr *in6a; 338 339 if ((in6a = in6_selectsrc(dstsock, optp, 340 in6p->in6p_moptions, 341 &in6p->in6p_route, 342 &in6p->in6p_laddr, 343 &error)) == 0) { 344 if (error == 0) 345 error = EADDRNOTAVAIL; 346 goto bad; 347 } 348 ip6->ip6_src = *in6a; 349 if (in6p->in6p_route.ro_rt) 350 oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index]; 351 } 352 353 ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK; 354 ip6->ip6_vfc &= ~IPV6_VERSION_MASK; 355 ip6->ip6_vfc |= IPV6_VERSION; 356 #if 0 /* ip6_plen will be filled in ip6_output. */ 357 ip6->ip6_plen = htons((u_short)plen); 358 #endif 359 ip6->ip6_nxt = in6p->in6p_ip6.ip6_nxt; 360 ip6->ip6_hlim = in6_selecthlim(in6p, oifp); 361 362 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 || 363 in6p->in6p_cksum != -1) { 364 struct mbuf *n; 365 int off; 366 u_int16_t *p; 367 368 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) /* XXX */ 369 370 /* compute checksum */ 371 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) 372 off = offsetof(struct icmp6_hdr, icmp6_cksum); 373 else 374 off = in6p->in6p_cksum; 375 if (plen < off + 1) { 376 error = EINVAL; 377 goto bad; 378 } 379 off += sizeof(struct ip6_hdr); 380 381 n = m; 382 while (n && n->m_len <= off) { 383 off -= n->m_len; 384 n = n->m_next; 385 } 386 if (!n) 387 goto bad; 388 p = (u_int16_t *)(mtod(n, caddr_t) + off); 389 *p = 0; 390 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen); 391 } 392 393 #ifdef IPSEC 394 m->m_pkthdr.rcvif = (struct ifnet *)so; 395 #endif /*IPSEC*/ 396 397 error = ip6_output(m, optp, &in6p->in6p_route, 0, in6p->in6p_moptions, 398 &oifp); 399 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 400 if (oifp) 401 icmp6_ifoutstat_inc(oifp, type, code); 402 icmp6stat.icp6s_outhist[type]++; 403 } 404 405 goto freectl; 406 407 bad: 408 if (m) 409 m_freem(m); 410 411 freectl: 412 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt) 413 RTFREE(optp->ip6po_route.ro_rt); 414 if (control) 415 m_freem(control); 416 return(error); 417 } 418 419 /* 420 * Raw IPv6 socket option processing. 421 */ 422 int 423 rip6_ctloutput(op, so, level, optname, m) 424 int op; 425 struct socket *so; 426 int level, optname; 427 struct mbuf **m; 428 { 429 int error = 0; 430 431 switch(level) { 432 case IPPROTO_IPV6: 433 switch(optname) { 434 case MRT6_INIT: 435 case MRT6_DONE: 436 case MRT6_ADD_MIF: 437 case MRT6_DEL_MIF: 438 case MRT6_ADD_MFC: 439 case MRT6_DEL_MFC: 440 case MRT6_PIM: 441 if (op == PRCO_SETOPT) { 442 error = ip6_mrouter_set(optname, so, *m); 443 if (*m) 444 (void)m_free(*m); 445 } else if (op == PRCO_GETOPT) { 446 error = ip6_mrouter_get(optname, so, m); 447 } else 448 error = EINVAL; 449 return (error); 450 } 451 return (ip6_ctloutput(op, so, level, optname, m)); 452 /* NOTREACHED */ 453 454 case IPPROTO_ICMPV6: 455 /* 456 * XXX: is it better to call icmp6_ctloutput() directly 457 * from protosw? 458 */ 459 return(icmp6_ctloutput(op, so, level, optname, m)); 460 461 default: 462 if (op == PRCO_SETOPT && *m) 463 (void)m_free(*m); 464 return(EINVAL); 465 } 466 } 467 468 extern u_long rip6_sendspace; 469 extern u_long rip6_recvspace; 470 471 int 472 rip6_usrreq(so, req, m, nam, control, p) 473 register struct socket *so; 474 int req; 475 struct mbuf *m, *nam, *control; 476 struct proc *p; 477 { 478 register struct in6pcb *in6p = sotoin6pcb(so); 479 int s; 480 int error = 0; 481 /* extern struct socket *ip6_mrouter; */ /* xxx */ 482 int priv; 483 484 priv = 0; 485 if (p && !suser(p->p_ucred, &p->p_acflag)) 486 priv++; 487 488 if (req == PRU_CONTROL) 489 return (in6_control(so, (u_long)m, (caddr_t)nam, 490 (struct ifnet *)control, p)); 491 492 switch (req) { 493 case PRU_ATTACH: 494 if (in6p) 495 panic("rip6_attach"); 496 if (!priv) { 497 error = EACCES; 498 break; 499 } 500 s = splsoftnet(); 501 if ((error = soreserve(so, rip6_sendspace, rip6_recvspace)) || 502 (error = in6_pcballoc(so, &rawin6pcb))) { 503 splx(s); 504 break; 505 } 506 splx(s); 507 in6p = sotoin6pcb(so); 508 in6p->in6p_ip6.ip6_nxt = (long)nam; 509 in6p->in6p_cksum = -1; 510 #ifdef IPSEC 511 error = ipsec_init_policy(&in6p->in6p_sp); 512 if (error != 0) { 513 in6_pcbdetach(in6p); 514 break; 515 } 516 #endif /*IPSEC*/ 517 518 MALLOC(in6p->in6p_icmp6filt, struct icmp6_filter *, 519 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT); 520 if (in6p->in6p_icmp6filt == NULL) { 521 in6_pcbdetach(in6p); 522 error = ENOMEM; 523 break; 524 } 525 ICMP6_FILTER_SETPASSALL(in6p->in6p_icmp6filt); 526 break; 527 528 case PRU_DISCONNECT: 529 if ((so->so_state & SS_ISCONNECTED) == 0) { 530 error = ENOTCONN; 531 break; 532 } 533 in6p->in6p_faddr = in6addr_any; 534 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 535 break; 536 537 case PRU_ABORT: 538 soisdisconnected(so); 539 /* Fallthrough */ 540 case PRU_DETACH: 541 if (in6p == 0) 542 panic("rip6_detach"); 543 if (so == ip6_mrouter) 544 ip6_mrouter_done(); 545 /* xxx: RSVP */ 546 if (in6p->in6p_icmp6filt) { 547 FREE(in6p->in6p_icmp6filt, M_PCB); 548 in6p->in6p_icmp6filt = NULL; 549 } 550 in6_pcbdetach(in6p); 551 break; 552 553 case PRU_BIND: 554 { 555 struct sockaddr_in6 *addr = mtod(nam, struct sockaddr_in6 *); 556 struct ifaddr *ia = NULL; 557 558 if (nam->m_len != sizeof(*addr)) { 559 error = EINVAL; 560 break; 561 } 562 if ((ifnet.tqh_first == 0) || 563 (addr->sin6_family != AF_INET6) || 564 (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) && 565 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0)) { 566 error = EADDRNOTAVAIL; 567 break; 568 } 569 if (ia && 570 ((struct in6_ifaddr *)ia)->ia6_flags & 571 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY| 572 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) { 573 error = EADDRNOTAVAIL; 574 break; 575 } 576 in6p->in6p_laddr = addr->sin6_addr; 577 break; 578 } 579 580 case PRU_CONNECT: 581 { 582 struct sockaddr_in6 *addr = mtod(nam, struct sockaddr_in6 *); 583 struct in6_addr *in6a = NULL; 584 585 if (nam->m_len != sizeof(*addr)) { 586 error = EINVAL; 587 break; 588 } 589 if (ifnet.tqh_first == 0) { 590 error = EADDRNOTAVAIL; 591 break; 592 } 593 if (addr->sin6_family != AF_INET6) { 594 error = EAFNOSUPPORT; 595 break; 596 } 597 598 /* Source address selection. XXX: need pcblookup? */ 599 in6a = in6_selectsrc(addr, in6p->in6p_outputopts, 600 in6p->in6p_moptions, 601 &in6p->in6p_route, 602 &in6p->in6p_laddr, 603 &error); 604 if (in6a == NULL) { 605 if (error == 0) 606 error = EADDRNOTAVAIL; 607 break; 608 } 609 in6p->in6p_laddr = *in6a; 610 in6p->in6p_faddr = addr->sin6_addr; 611 soisconnected(so); 612 break; 613 } 614 615 case PRU_CONNECT2: 616 error = EOPNOTSUPP; 617 break; 618 619 /* 620 * Mark the connection as being incapable of futther input. 621 */ 622 case PRU_SHUTDOWN: 623 socantsendmore(so); 624 break; 625 /* 626 * Ship a packet out. The appropriate raw output 627 * routine handles any messaging necessary. 628 */ 629 case PRU_SEND: 630 { 631 struct sockaddr_in6 tmp; 632 struct sockaddr_in6 *dst; 633 634 if (so->so_state & SS_ISCONNECTED) { 635 if (nam) { 636 error = EISCONN; 637 break; 638 } 639 /* XXX */ 640 bzero(&tmp, sizeof(tmp)); 641 tmp.sin6_family = AF_INET6; 642 tmp.sin6_len = sizeof(struct sockaddr_in6); 643 bcopy(&in6p->in6p_faddr, &tmp.sin6_addr, 644 sizeof(struct in6_addr)); 645 dst = &tmp; 646 } else { 647 if (nam == NULL) { 648 error = ENOTCONN; 649 break; 650 } 651 dst = mtod(nam, struct sockaddr_in6 *); 652 } 653 error = rip6_output(m, so, dst, control); 654 m = NULL; 655 break; 656 } 657 658 case PRU_SENSE: 659 /* 660 * stat: don't bother with a blocksize 661 */ 662 return(0); 663 /* 664 * Not supported. 665 */ 666 case PRU_RCVOOB: 667 case PRU_RCVD: 668 case PRU_LISTEN: 669 case PRU_ACCEPT: 670 case PRU_SENDOOB: 671 error = EOPNOTSUPP; 672 break; 673 674 case PRU_SOCKADDR: 675 in6_setsockaddr(in6p, nam); 676 break; 677 678 case PRU_PEERADDR: 679 in6_setpeeraddr(in6p, nam); 680 break; 681 682 default: 683 panic("rip6_usrreq"); 684 } 685 if (m != NULL) 686 m_freem(m); 687 return(error); 688 } 689
Indexes created Tue Sep 30 20:09:53 GMT 2025