Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/netinet6/raw_ip6.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
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: releng/6.0/sys/netinet6/raw_ip6.c 151533 2005-10-21 11:10:46Z suz $ 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 * 4. 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_ipsec.h" 64 #include "opt_inet6.h" 65 66 #include <sys/param.h> 67 #include <sys/errno.h> 68 #include <sys/lock.h> 69 #include <sys/malloc.h> 70 #include <sys/mbuf.h> 71 #include <sys/proc.h> 72 #include <sys/protosw.h> 73 #include <sys/signalvar.h> 74 #include <sys/socket.h> 75 #include <sys/socketvar.h> 76 #include <sys/sx.h> 77 #include <sys/systm.h> 78 79 #include <net/if.h> 80 #include <net/if_types.h> 81 #include <net/route.h> 82 83 #include <netinet/in.h> 84 #include <netinet/in_var.h> 85 #include <netinet/in_systm.h> 86 #include <netinet/icmp6.h> 87 #include <netinet/in_pcb.h> 88 #include <netinet/ip6.h> 89 #include <netinet6/ip6protosw.h> 90 #include <netinet6/ip6_mroute.h> 91 #include <netinet6/in6_pcb.h> 92 #include <netinet6/ip6_var.h> 93 #include <netinet6/nd6.h> 94 #include <netinet6/raw_ip6.h> 95 #ifdef ENABLE_DEFAULT_SCOPE 96 #include <netinet6/scope6_var.h> 97 #endif 98 99 #ifdef IPSEC 100 #include <netinet6/ipsec.h> 101 #include <netinet6/ipsec6.h> 102 #endif /*IPSEC*/ 103 104 #ifdef FAST_IPSEC 105 #include <netipsec/ipsec.h> 106 #include <netipsec/ipsec6.h> 107 #endif /* FAST_IPSEC */ 108 109 #include <machine/stdarg.h> 110 111 #define satosin6(sa) ((struct sockaddr_in6 *)(sa)) 112 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa)) 113 114 /* 115 * Raw interface to IP6 protocol. 116 */ 117 118 extern struct inpcbhead ripcb; 119 extern struct inpcbinfo ripcbinfo; 120 extern u_long rip_sendspace; 121 extern u_long rip_recvspace; 122 123 struct rip6stat rip6stat; 124 125 /* 126 * Setup generic address and protocol structures 127 * for raw_input routine, then pass them along with 128 * mbuf chain. 129 */ 130 int 131 rip6_input(mp, offp, proto) 132 struct mbuf **mp; 133 int *offp, proto; 134 { 135 struct mbuf *m = *mp; 136 register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); 137 register struct inpcb *in6p; 138 struct inpcb *last = 0; 139 struct mbuf *opts = NULL; 140 struct sockaddr_in6 fromsa; 141 142 rip6stat.rip6s_ipackets++; 143 144 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) { 145 /* XXX send icmp6 host/port unreach? */ 146 m_freem(m); 147 return IPPROTO_DONE; 148 } 149 150 init_sin6(&fromsa, m); /* general init */ 151 152 INP_INFO_RLOCK(&ripcbinfo); 153 LIST_FOREACH(in6p, &ripcb, inp_list) { 154 INP_LOCK(in6p); 155 if ((in6p->in6p_vflag & INP_IPV6) == 0) { 156 docontinue: 157 INP_UNLOCK(in6p); 158 continue; 159 } 160 if (in6p->in6p_ip6_nxt && 161 in6p->in6p_ip6_nxt != proto) 162 goto docontinue; 163 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) && 164 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) 165 goto docontinue; 166 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) && 167 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src)) 168 goto docontinue; 169 if (in6p->in6p_cksum != -1) { 170 rip6stat.rip6s_isum++; 171 if (in6_cksum(m, ip6->ip6_nxt, *offp, 172 m->m_pkthdr.len - *offp)) { 173 rip6stat.rip6s_badsum++; 174 goto docontinue; 175 } 176 } 177 if (last) { 178 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); 179 180 #if defined(IPSEC) || defined(FAST_IPSEC) 181 /* 182 * Check AH/ESP integrity. 183 */ 184 if (n && ipsec6_in_reject(n, last)) { 185 m_freem(n); 186 #ifdef IPSEC 187 ipsec6stat.in_polvio++; 188 #endif /*IPSEC*/ 189 /* do not inject data into pcb */ 190 } else 191 #endif /*IPSEC || FAST_IPSEC*/ 192 if (n) { 193 if (last->in6p_flags & IN6P_CONTROLOPTS || 194 last->in6p_socket->so_options & SO_TIMESTAMP) 195 ip6_savecontrol(last, n, &opts); 196 /* strip intermediate headers */ 197 m_adj(n, *offp); 198 if (sbappendaddr(&last->in6p_socket->so_rcv, 199 (struct sockaddr *)&fromsa, 200 n, opts) == 0) { 201 m_freem(n); 202 if (opts) 203 m_freem(opts); 204 rip6stat.rip6s_fullsock++; 205 } else 206 sorwakeup(last->in6p_socket); 207 opts = NULL; 208 } 209 INP_UNLOCK(last); 210 } 211 last = in6p; 212 } 213 #if defined(IPSEC) || defined(FAST_IPSEC) 214 /* 215 * Check AH/ESP integrity. 216 */ 217 if (last && ipsec6_in_reject(m, last)) { 218 m_freem(m); 219 #ifdef IPSEC 220 ipsec6stat.in_polvio++; 221 #endif /*IPSEC*/ 222 ip6stat.ip6s_delivered--; 223 /* do not inject data into pcb */ 224 INP_UNLOCK(last); 225 } else 226 #endif /*IPSEC || FAST_IPSEC*/ 227 if (last) { 228 if (last->in6p_flags & IN6P_CONTROLOPTS || 229 last->in6p_socket->so_options & SO_TIMESTAMP) 230 ip6_savecontrol(last, m, &opts); 231 /* strip intermediate headers */ 232 m_adj(m, *offp); 233 if (sbappendaddr(&last->in6p_socket->so_rcv, 234 (struct sockaddr *)&fromsa, m, opts) == 0) { 235 m_freem(m); 236 if (opts) 237 m_freem(opts); 238 rip6stat.rip6s_fullsock++; 239 } else 240 sorwakeup(last->in6p_socket); 241 INP_UNLOCK(last); 242 } else { 243 rip6stat.rip6s_nosock++; 244 if (m->m_flags & M_MCAST) 245 rip6stat.rip6s_nosockmcast++; 246 if (proto == IPPROTO_NONE) 247 m_freem(m); 248 else { 249 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */ 250 icmp6_error(m, ICMP6_PARAM_PROB, 251 ICMP6_PARAMPROB_NEXTHEADER, 252 prvnxtp - mtod(m, char *)); 253 } 254 ip6stat.ip6s_delivered--; 255 } 256 INP_INFO_RUNLOCK(&ripcbinfo); 257 return IPPROTO_DONE; 258 } 259 260 void 261 rip6_ctlinput(cmd, sa, d) 262 int cmd; 263 struct sockaddr *sa; 264 void *d; 265 { 266 struct ip6_hdr *ip6; 267 struct mbuf *m; 268 int off = 0; 269 struct ip6ctlparam *ip6cp = NULL; 270 const struct sockaddr_in6 *sa6_src = NULL; 271 void *cmdarg; 272 struct inpcb *(*notify) __P((struct inpcb *, int)) = in6_rtchange; 273 274 if (sa->sa_family != AF_INET6 || 275 sa->sa_len != sizeof(struct sockaddr_in6)) 276 return; 277 278 if ((unsigned)cmd >= PRC_NCMDS) 279 return; 280 if (PRC_IS_REDIRECT(cmd)) 281 notify = in6_rtchange, d = NULL; 282 else if (cmd == PRC_HOSTDEAD) 283 d = NULL; 284 else if (inet6ctlerrmap[cmd] == 0) 285 return; 286 287 /* if the parameter is from icmp6, decode it. */ 288 if (d != NULL) { 289 ip6cp = (struct ip6ctlparam *)d; 290 m = ip6cp->ip6c_m; 291 ip6 = ip6cp->ip6c_ip6; 292 off = ip6cp->ip6c_off; 293 cmdarg = ip6cp->ip6c_cmdarg; 294 sa6_src = ip6cp->ip6c_src; 295 } else { 296 m = NULL; 297 ip6 = NULL; 298 cmdarg = NULL; 299 sa6_src = &sa6_any; 300 } 301 302 (void) in6_pcbnotify(&ripcbinfo, sa, 0, 303 (const struct sockaddr *)sa6_src, 304 0, cmd, cmdarg, notify); 305 } 306 307 /* 308 * Generate IPv6 header and pass packet to ip6_output. 309 * Tack on options user may have setup with control call. 310 */ 311 int 312 #if __STDC__ 313 rip6_output(struct mbuf *m, ...) 314 #else 315 rip6_output(m, va_alist) 316 struct mbuf *m; 317 va_dcl 318 #endif 319 { 320 struct mbuf *control; 321 struct socket *so; 322 struct sockaddr_in6 *dstsock; 323 struct in6_addr *dst; 324 struct ip6_hdr *ip6; 325 struct inpcb *in6p; 326 u_int plen = m->m_pkthdr.len; 327 int error = 0; 328 struct ip6_pktopts opt, *stickyopt = NULL; 329 struct ifnet *oifp = NULL; 330 int type = 0, code = 0; /* for ICMPv6 output statistics only */ 331 int priv = 0; 332 struct in6_addr *in6a; 333 va_list ap; 334 335 va_start(ap, m); 336 so = va_arg(ap, struct socket *); 337 dstsock = va_arg(ap, struct sockaddr_in6 *); 338 control = va_arg(ap, struct mbuf *); 339 va_end(ap); 340 341 in6p = sotoin6pcb(so); 342 INP_LOCK(in6p); 343 stickyopt = in6p->in6p_outputopts; 344 345 priv = 0; 346 if (so->so_cred->cr_uid == 0) 347 priv = 1; 348 dst = &dstsock->sin6_addr; 349 if (control) { 350 if ((error = ip6_setpktopts(control, &opt, 351 stickyopt, priv, 0, so->so_proto->pr_protocol)) 352 != 0) { 353 goto bad; 354 } 355 in6p->in6p_outputopts = &opt; 356 } 357 358 /* 359 * For an ICMPv6 packet, we should know its type and code 360 * to update statistics. 361 */ 362 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 363 struct icmp6_hdr *icmp6; 364 if (m->m_len < sizeof(struct icmp6_hdr) && 365 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) { 366 error = ENOBUFS; 367 goto bad; 368 } 369 icmp6 = mtod(m, struct icmp6_hdr *); 370 type = icmp6->icmp6_type; 371 code = icmp6->icmp6_code; 372 } 373 374 M_PREPEND(m, sizeof(*ip6), M_DONTWAIT); 375 if (m == NULL) { 376 error = ENOBUFS; 377 goto bad; 378 } 379 ip6 = mtod(m, struct ip6_hdr *); 380 381 /* 382 * Next header might not be ICMP6 but use its pseudo header anyway. 383 */ 384 ip6->ip6_dst = *dst; 385 386 /* 387 * If the scope of the destination is link-local, embed the interface 388 * index in the address. 389 * 390 * XXX advanced-api value overrides sin6_scope_id 391 */ 392 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) { 393 struct in6_pktinfo *pi; 394 395 /* 396 * XXX Boundary check is assumed to be already done in 397 * ip6_setpktopts(). 398 */ 399 if (in6p->in6p_outputopts && 400 (pi = in6p->in6p_outputopts->ip6po_pktinfo) && 401 pi->ipi6_ifindex) { 402 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex); 403 oifp = ifnet_byindex(pi->ipi6_ifindex); 404 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && 405 in6p->in6p_moptions && 406 in6p->in6p_moptions->im6o_multicast_ifp) { 407 oifp = in6p->in6p_moptions->im6o_multicast_ifp; 408 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index); 409 } else if (dstsock->sin6_scope_id) { 410 /* boundary check */ 411 if (dstsock->sin6_scope_id < 0 || 412 if_index < dstsock->sin6_scope_id) { 413 error = ENXIO; /* XXX EINVAL? */ 414 goto bad; 415 } 416 ip6->ip6_dst.s6_addr16[1] = 417 htons(dstsock->sin6_scope_id & 0xffff); /* XXX */ 418 } 419 } 420 421 /* 422 * Source address selection. 423 */ 424 if ((in6a = in6_selectsrc(dstsock, in6p->in6p_outputopts, 425 in6p->in6p_moptions, NULL, &in6p->in6p_laddr, &error)) == 0) { 426 if (error == 0) 427 error = EADDRNOTAVAIL; 428 goto bad; 429 } 430 ip6->ip6_src = *in6a; 431 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) | 432 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK); 433 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) | 434 (IPV6_VERSION & IPV6_VERSION_MASK); 435 /* ip6_plen will be filled in ip6_output, so not fill it here. */ 436 ip6->ip6_nxt = in6p->in6p_ip6_nxt; 437 ip6->ip6_hlim = in6_selecthlim(in6p, oifp); 438 439 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 || 440 in6p->in6p_cksum != -1) { 441 struct mbuf *n; 442 int off; 443 u_int16_t *p; 444 445 /* compute checksum */ 446 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) 447 off = offsetof(struct icmp6_hdr, icmp6_cksum); 448 else 449 off = in6p->in6p_cksum; 450 if (plen < off + 1) { 451 error = EINVAL; 452 goto bad; 453 } 454 off += sizeof(struct ip6_hdr); 455 456 n = m; 457 while (n && n->m_len <= off) { 458 off -= n->m_len; 459 n = n->m_next; 460 } 461 if (!n) 462 goto bad; 463 p = (u_int16_t *)(mtod(n, caddr_t) + off); 464 *p = 0; 465 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen); 466 } 467 468 error = ip6_output(m, in6p->in6p_outputopts, NULL, 0, 469 in6p->in6p_moptions, &oifp, in6p); 470 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) { 471 if (oifp) 472 icmp6_ifoutstat_inc(oifp, type, code); 473 icmp6stat.icp6s_outhist[type]++; 474 } else 475 rip6stat.rip6s_opackets++; 476 477 goto freectl; 478 479 bad: 480 if (m) 481 m_freem(m); 482 483 freectl: 484 if (control) { 485 ip6_clearpktopts(in6p->in6p_outputopts, -1); 486 in6p->in6p_outputopts = stickyopt; 487 m_freem(control); 488 } 489 INP_UNLOCK(in6p); 490 return (error); 491 } 492 493 /* 494 * Raw IPv6 socket option processing. 495 */ 496 int 497 rip6_ctloutput(so, sopt) 498 struct socket *so; 499 struct sockopt *sopt; 500 { 501 int error; 502 503 if (sopt->sopt_level == IPPROTO_ICMPV6) 504 /* 505 * XXX: is it better to call icmp6_ctloutput() directly 506 * from protosw? 507 */ 508 return (icmp6_ctloutput(so, sopt)); 509 else if (sopt->sopt_level != IPPROTO_IPV6) 510 return (EINVAL); 511 512 error = 0; 513 514 switch (sopt->sopt_dir) { 515 case SOPT_GET: 516 switch (sopt->sopt_name) { 517 case MRT6_INIT: 518 case MRT6_DONE: 519 case MRT6_ADD_MIF: 520 case MRT6_DEL_MIF: 521 case MRT6_ADD_MFC: 522 case MRT6_DEL_MFC: 523 case MRT6_PIM: 524 error = ip6_mrouter_get(so, sopt); 525 break; 526 case IPV6_CHECKSUM: 527 error = ip6_raw_ctloutput(so, sopt); 528 break; 529 default: 530 error = ip6_ctloutput(so, sopt); 531 break; 532 } 533 break; 534 535 case SOPT_SET: 536 switch (sopt->sopt_name) { 537 case MRT6_INIT: 538 case MRT6_DONE: 539 case MRT6_ADD_MIF: 540 case MRT6_DEL_MIF: 541 case MRT6_ADD_MFC: 542 case MRT6_DEL_MFC: 543 case MRT6_PIM: 544 error = ip6_mrouter_set(so, sopt); 545 break; 546 case IPV6_CHECKSUM: 547 error = ip6_raw_ctloutput(so, sopt); 548 break; 549 default: 550 error = ip6_ctloutput(so, sopt); 551 break; 552 } 553 break; 554 } 555 556 return (error); 557 } 558 559 static int 560 rip6_attach(struct socket *so, int proto, struct thread *td) 561 { 562 struct inpcb *inp; 563 struct icmp6_filter *filter; 564 int error, s; 565 566 INP_INFO_WLOCK(&ripcbinfo); 567 inp = sotoinpcb(so); 568 if (inp) { 569 INP_INFO_WUNLOCK(&ripcbinfo); 570 panic("rip6_attach"); 571 } 572 if (td && (error = suser(td)) != 0) { 573 INP_INFO_WUNLOCK(&ripcbinfo); 574 return error; 575 } 576 error = soreserve(so, rip_sendspace, rip_recvspace); 577 if (error) { 578 INP_INFO_WUNLOCK(&ripcbinfo); 579 return error; 580 } 581 MALLOC(filter, struct icmp6_filter *, 582 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT); 583 if (filter == NULL) { 584 INP_INFO_WUNLOCK(&ripcbinfo); 585 return ENOMEM; 586 } 587 s = splnet(); 588 error = in_pcballoc(so, &ripcbinfo, "raw6inp"); 589 splx(s); 590 if (error) { 591 INP_INFO_WUNLOCK(&ripcbinfo); 592 FREE(filter, M_PCB); 593 return error; 594 } 595 inp = (struct inpcb *)so->so_pcb; 596 INP_LOCK(inp); 597 INP_INFO_WUNLOCK(&ripcbinfo); 598 inp->inp_vflag |= INP_IPV6; 599 inp->in6p_ip6_nxt = (long)proto; 600 inp->in6p_hops = -1; /* use kernel default */ 601 inp->in6p_cksum = -1; 602 inp->in6p_icmp6filt = filter; 603 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt); 604 INP_UNLOCK(inp); 605 return 0; 606 } 607 608 static int 609 rip6_detach(struct socket *so) 610 { 611 struct inpcb *inp; 612 613 INP_INFO_WLOCK(&ripcbinfo); 614 inp = sotoinpcb(so); 615 if (inp == 0) { 616 INP_INFO_WUNLOCK(&ripcbinfo); 617 panic("rip6_detach"); 618 } 619 /* xxx: RSVP */ 620 if (so == ip6_mrouter) 621 ip6_mrouter_done(); 622 if (inp->in6p_icmp6filt) { 623 FREE(inp->in6p_icmp6filt, M_PCB); 624 inp->in6p_icmp6filt = NULL; 625 } 626 INP_LOCK(inp); 627 in6_pcbdetach(inp); 628 INP_INFO_WUNLOCK(&ripcbinfo); 629 return 0; 630 } 631 632 static int 633 rip6_abort(struct socket *so) 634 { 635 soisdisconnected(so); 636 return rip6_detach(so); 637 } 638 639 static int 640 rip6_disconnect(struct socket *so) 641 { 642 struct inpcb *inp = sotoinpcb(so); 643 644 if ((so->so_state & SS_ISCONNECTED) == 0) 645 return ENOTCONN; 646 inp->in6p_faddr = in6addr_any; 647 return rip6_abort(so); 648 } 649 650 static int 651 rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 652 { 653 struct inpcb *inp = sotoinpcb(so); 654 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 655 struct ifaddr *ia = NULL; 656 657 if (nam->sa_len != sizeof(*addr)) 658 return EINVAL; 659 if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6) 660 return EADDRNOTAVAIL; 661 #ifdef ENABLE_DEFAULT_SCOPE 662 if (addr->sin6_scope_id == 0) { /* not change if specified */ 663 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 664 } 665 #endif 666 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) && 667 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0) 668 return EADDRNOTAVAIL; 669 if (ia && 670 ((struct in6_ifaddr *)ia)->ia6_flags & 671 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY| 672 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) { 673 return (EADDRNOTAVAIL); 674 } 675 INP_INFO_WLOCK(&ripcbinfo); 676 INP_LOCK(inp); 677 inp->in6p_laddr = addr->sin6_addr; 678 INP_UNLOCK(inp); 679 INP_INFO_WUNLOCK(&ripcbinfo); 680 return 0; 681 } 682 683 static int 684 rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 685 { 686 struct inpcb *inp = sotoinpcb(so); 687 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam; 688 struct in6_addr *in6a = NULL; 689 int error = 0; 690 #ifdef ENABLE_DEFAULT_SCOPE 691 struct sockaddr_in6 tmp; 692 #endif 693 694 if (nam->sa_len != sizeof(*addr)) 695 return EINVAL; 696 if (TAILQ_EMPTY(&ifnet)) 697 return EADDRNOTAVAIL; 698 if (addr->sin6_family != AF_INET6) 699 return EAFNOSUPPORT; 700 #ifdef ENABLE_DEFAULT_SCOPE 701 if (addr->sin6_scope_id == 0) { /* not change if specified */ 702 /* avoid overwrites */ 703 tmp = *addr; 704 addr = &tmp; 705 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr); 706 } 707 #endif 708 INP_INFO_WLOCK(&ripcbinfo); 709 INP_LOCK(inp); 710 /* Source address selection. XXX: need pcblookup? */ 711 in6a = in6_selectsrc(addr, inp->in6p_outputopts, 712 inp->in6p_moptions, NULL, 713 &inp->in6p_laddr, &error); 714 if (in6a == NULL) { 715 INP_UNLOCK(inp); 716 INP_INFO_WUNLOCK(&ripcbinfo); 717 return (error ? error : EADDRNOTAVAIL); 718 } 719 inp->in6p_laddr = *in6a; 720 inp->in6p_faddr = addr->sin6_addr; 721 soisconnected(so); 722 INP_UNLOCK(inp); 723 INP_INFO_WUNLOCK(&ripcbinfo); 724 return 0; 725 } 726 727 static int 728 rip6_shutdown(struct socket *so) 729 { 730 struct inpcb *inp; 731 732 INP_INFO_RLOCK(&ripcbinfo); 733 inp = sotoinpcb(so); 734 INP_LOCK(inp); 735 INP_INFO_RUNLOCK(&ripcbinfo); 736 socantsendmore(so); 737 INP_UNLOCK(inp); 738 return 0; 739 } 740 741 static int 742 rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 743 struct mbuf *control, struct thread *td) 744 { 745 struct inpcb *inp = sotoinpcb(so); 746 struct sockaddr_in6 tmp; 747 struct sockaddr_in6 *dst; 748 int ret; 749 750 INP_INFO_WLOCK(&ripcbinfo); 751 /* always copy sockaddr to avoid overwrites */ 752 /* Unlocked read. */ 753 if (so->so_state & SS_ISCONNECTED) { 754 if (nam) { 755 INP_INFO_WUNLOCK(&ripcbinfo); 756 m_freem(m); 757 return EISCONN; 758 } 759 /* XXX */ 760 bzero(&tmp, sizeof(tmp)); 761 tmp.sin6_family = AF_INET6; 762 tmp.sin6_len = sizeof(struct sockaddr_in6); 763 bcopy(&inp->in6p_faddr, &tmp.sin6_addr, 764 sizeof(struct in6_addr)); 765 dst = &tmp; 766 } else { 767 if (nam == NULL) { 768 INP_INFO_WUNLOCK(&ripcbinfo); 769 m_freem(m); 770 return ENOTCONN; 771 } 772 tmp = *(struct sockaddr_in6 *)nam; 773 dst = &tmp; 774 } 775 #ifdef ENABLE_DEFAULT_SCOPE 776 if (dst->sin6_scope_id == 0) { /* not change if specified */ 777 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr); 778 } 779 #endif 780 ret = rip6_output(m, so, dst, control); 781 INP_INFO_WUNLOCK(&ripcbinfo); 782 return (ret); 783 } 784 785 struct pr_usrreqs rip6_usrreqs = { 786 .pru_abort = rip6_abort, 787 .pru_attach = rip6_attach, 788 .pru_bind = rip6_bind, 789 .pru_connect = rip6_connect, 790 .pru_control = in6_control, 791 .pru_detach = rip6_detach, 792 .pru_disconnect = rip6_disconnect, 793 .pru_peeraddr = in6_setpeeraddr, 794 .pru_send = rip6_send, 795 .pru_shutdown = rip6_shutdown, 796 .pru_sockaddr = in6_setsockaddr, 797 };
Cache object: e46c18d5e71dc4d5a4abb9884dde7f95
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]