udp6_usrreq.c revision 1.2
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 30 /* 31 * Copyright (c) 1982, 1986, 1989, 1993 32 * The Regents of the University of California. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by the University of 45 * California, Berkeley and its contributors. 46 * 4. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93 63 */ 64 65 #include <sys/param.h> 66 #include <sys/malloc.h> 67 #include <sys/mbuf.h> 68 #include <sys/protosw.h> 69 #include <sys/socket.h> 70 #include <sys/socketvar.h> 71 #include <sys/errno.h> 72 #include <sys/stat.h> 73 #include <sys/systm.h> 74 #ifdef __NetBSD__ 75 #include <sys/proc.h> 76 #endif 77 78 #include <net/if.h> 79 #include <net/route.h> 80 #include <net/if_types.h> 81 82 #include <netinet/in.h> 83 #include <netinet/in_var.h> 84 #include <netinet6/in6_systm.h> 85 #include <netinet6/ip6.h> 86 #include <netinet6/in6_pcb.h> 87 #include <netinet6/ip6_var.h> 88 #include <netinet6/icmp6.h> 89 #include <netinet6/udp6.h> 90 #include <netinet6/udp6_var.h> 91 92 #ifdef IPSEC 93 #include <netinet6/ipsec.h> 94 #endif /*IPSEC*/ 95 96 #include "faith.h" 97 98 /* 99 * UDP protocol inplementation. 100 * Per RFC 768, August, 1980. 101 */ 102 103 struct in6pcb *udp6_last_in6pcb = &udb6; 104 105 static int in6_mcmatch __P((struct in6pcb *, struct in6_addr *, struct ifnet *)); 106 static void udp6_detach __P((struct in6pcb *)); 107 static void udp6_notify __P((struct in6pcb *, int)); 108 109 void 110 udp6_init() 111 { 112 udb6.in6p_next = udb6.in6p_prev = &udb6; 113 } 114 115 static int 116 in6_mcmatch(in6p, ia6, ifp) 117 struct in6pcb *in6p; 118 register struct in6_addr *ia6; 119 struct ifnet *ifp; 120 { 121 struct ip6_moptions *im6o = in6p->in6p_moptions; 122 struct in6_multi_mship *imm; 123 124 if (im6o == NULL) 125 return 0; 126 127 for (imm = im6o->im6o_memberships.lh_first; imm != NULL; 128 imm = imm->i6mm_chain.le_next) { 129 if ((ifp == NULL || 130 imm->i6mm_maddr->in6m_ifp == ifp) && 131 IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr, 132 ia6)) 133 return 1; 134 } 135 return 0; 136 } 137 138 int 139 udp6_input(mp, offp, proto) 140 struct mbuf **mp; 141 int *offp, proto; 142 { 143 struct mbuf *m = *mp; 144 register struct ip6_hdr *ip6; 145 register struct udphdr *uh; 146 register struct in6pcb *in6p; 147 struct mbuf *opts = 0; 148 int off = *offp; 149 int plen, ulen; 150 struct sockaddr_in6 udp_in6; 151 152 #if defined(NFAITH) && 0 < NFAITH 153 if (m->m_pkthdr.rcvif) { 154 if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) { 155 /* send icmp6 host unreach? */ 156 m_freem(m); 157 return IPPROTO_DONE; 158 } 159 } 160 #endif 161 udp6stat.udp6s_ipackets++; 162 163 IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE); 164 165 ip6 = mtod(m, struct ip6_hdr *); 166 plen = ntohs(ip6->ip6_plen) - off + sizeof(*ip6); 167 uh = (struct udphdr *)((caddr_t)ip6 + off); 168 ulen = ntohs((u_short)uh->uh_ulen); 169 170 if (plen != ulen) { 171 udp6stat.udp6s_badlen++; 172 goto bad; 173 } 174 175 /* 176 * Checksum extended UDP header and data. 177 */ 178 if (uh->uh_sum == 0) 179 udp6stat.udp6s_nosum++; 180 else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) { 181 udp6stat.udp6s_badsum++; 182 goto bad; 183 } 184 185 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 186 struct in6pcb *last; 187 188 /* 189 * Deliver a multicast datagram to all sockets 190 * for which the local and remote addresses and ports match 191 * those of the incoming datagram. This allows more than 192 * one process to receive multicasts on the same port. 193 * (This really ought to be done for unicast datagrams as 194 * well, but that would cause problems with existing 195 * applications that open both address-specific sockets and 196 * a wildcard socket listening to the same port -- they would 197 * end up receiving duplicates of every unicast datagram. 198 * Those applications open the multiple sockets to overcome an 199 * inadequacy of the UDP socket interface, but for backwards 200 * compatibility we avoid the problem here rather than 201 * fixing the interface. Maybe 4.5BSD will remedy this?) 202 */ 203 204 /* 205 * In a case that laddr should be set to the link-local 206 * address (this happens in RIPng), the multicast address 207 * specified in the received packet does not match with 208 * laddr. To cure this situation, the matching is relaxed 209 * if the receiving interface is the same as one specified 210 * in the socket and if the destination multicast address 211 * matches one of the multicast groups specified in the socket. 212 */ 213 214 /* 215 * Construct sockaddr format source address. 216 */ 217 bzero(&udp_in6, sizeof(udp_in6)); 218 udp_in6.sin6_len = sizeof(struct sockaddr_in6); 219 udp_in6.sin6_family = AF_INET6; 220 udp_in6.sin6_port = uh->uh_sport; 221 udp_in6.sin6_addr = ip6->ip6_src; 222 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) 223 udp_in6.sin6_addr.s6_addr16[1] = 0; 224 if (m->m_pkthdr.rcvif) { 225 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) { 226 udp_in6.sin6_scope_id = 227 m->m_pkthdr.rcvif->if_index; 228 } else 229 udp_in6.sin6_scope_id = 0; 230 } else 231 udp_in6.sin6_scope_id = 0; 232 /* 233 * KAME note: usually we drop udphdr from mbuf here. 234 * We need udphdr for IPsec processing so we do that later. 235 */ 236 237 /* 238 * Locate pcb(s) for datagram. 239 * (Algorithm copied from raw_intr().) 240 */ 241 last = NULL; 242 for (in6p = udb6.in6p_next; 243 in6p != &udb6; 244 in6p = in6p->in6p_next) { 245 if (in6p->in6p_lport != uh->uh_dport) 246 continue; 247 if (!IN6_IS_ADDR_ANY(&in6p->in6p_laddr)) { 248 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, 249 &ip6->ip6_dst) && 250 !in6_mcmatch(in6p, &ip6->ip6_dst, 251 m->m_pkthdr.rcvif)) 252 continue; 253 } 254 if (!IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 255 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, 256 &ip6->ip6_src) || 257 in6p->in6p_fport != uh->uh_sport) 258 continue; 259 } 260 261 if (last != NULL) { 262 struct mbuf *n; 263 264 #ifdef IPSEC 265 /* 266 * Check AH/ESP integrity. 267 */ 268 if (last != NULL && ipsec6_in_reject(m, last)) { 269 ipsec6stat.in_polvio++; 270 /* do not inject data into pcb */ 271 } else 272 #endif /*IPSEC*/ 273 if ((n = m_copy(m, 0, M_COPYALL)) != NULL) { 274 /* 275 * KAME NOTE: do not 276 * m_copy(m, offset, ...) above. 277 * sbappendaddr() expects M_PKTHDR, 278 * and m_copy() will copy M_PKTHDR 279 * only if offset is 0. 280 */ 281 if (last->in6p_flags & IN6P_CONTROLOPTS) { 282 ip6_savecontrol(last, &opts, 283 ip6, n); 284 } 285 286 m_adj(m, off + sizeof(struct udphdr)); 287 if (sbappendaddr(&last->in6p_socket->so_rcv, 288 (struct sockaddr *)&udp_in6, 289 n, opts) == 0) { 290 m_freem(n); 291 if (opts) 292 m_freem(opts); 293 udp6stat.udp6s_fullsock++; 294 } else 295 sorwakeup(last->in6p_socket); 296 opts = 0; 297 } 298 } 299 last = in6p; 300 /* 301 * Don't look for additional matches if this one does 302 * not have either the SO_REUSEPORT or SO_REUSEADDR 303 * socket options set. This heuristic avoids searching 304 * through all pcbs in the common case of a non-shared 305 * port. It assumes that an application will never 306 * clear these options after setting them. 307 */ 308 if ((last->in6p_socket->so_options & 309 (SO_REUSEPORT|SO_REUSEADDR)) == 0) 310 break; 311 } 312 313 if (last == NULL) { 314 /* 315 * No matching pcb found; discard datagram. 316 * (No need to send an ICMP Port Unreachable 317 * for a broadcast or multicast datgram.) 318 */ 319 udp6stat.udp6s_noport++; 320 udp6stat.udp6s_noportmcast++; 321 goto bad; 322 } 323 #ifdef IPSEC 324 /* 325 * Check AH/ESP integrity. 326 */ 327 if (last != NULL && ipsec6_in_reject(m, last)) { 328 ipsec6stat.in_polvio++; 329 goto bad; 330 } 331 #endif /*IPSEC*/ 332 if (last->in6p_flags & IN6P_CONTROLOPTS) 333 ip6_savecontrol(last, &opts, ip6, m); 334 335 m_adj(m, off + sizeof(struct udphdr)); 336 if (sbappendaddr(&last->in6p_socket->so_rcv, 337 (struct sockaddr *)&udp_in6, 338 m, opts) == 0) { 339 udp6stat.udp6s_fullsock++; 340 goto bad; 341 } 342 sorwakeup(last->in6p_socket); 343 return IPPROTO_DONE; 344 } 345 /* 346 * Locate pcb for datagram. 347 */ 348 in6p = udp6_last_in6pcb; 349 if (in6p->in6p_lport != uh->uh_dport || 350 in6p->in6p_fport != uh->uh_sport || 351 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src) || 352 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) { 353 in6p = in6_pcblookup(&udb6, 354 &ip6->ip6_src, uh->uh_sport, 355 &ip6->ip6_dst, uh->uh_dport, 356 IN6PLOOKUP_WILDCARD); 357 if (in6p) 358 udp6_last_in6pcb = in6p; 359 udp6stat.udp6ps_pcbcachemiss++; 360 } 361 if (in6p == 0) { 362 udp6stat.udp6s_noport++; 363 if (m->m_flags & M_MCAST) { 364 printf("UDP6: M_MCAST is set in a unicast packet.\n"); 365 udp6stat.udp6s_noportmcast++; 366 goto bad; 367 } 368 icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0); 369 return IPPROTO_DONE; 370 } 371 #ifdef IPSEC 372 /* 373 * Check AH/ESP integrity. 374 */ 375 if (in6p != NULL && ipsec6_in_reject(m, in6p)) { 376 ipsec6stat.in_polvio++; 377 goto bad; 378 } 379 #endif /*IPSEC*/ 380 381 /* 382 * Construct sockaddr format source address. 383 * Stuff source address and datagram in user buffer. 384 */ 385 bzero(&udp_in6, sizeof(udp_in6)); 386 udp_in6.sin6_len = sizeof(struct sockaddr_in6); 387 udp_in6.sin6_family = AF_INET6; 388 udp_in6.sin6_port = uh->uh_sport; 389 udp_in6.sin6_addr = ip6->ip6_src; 390 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) 391 udp_in6.sin6_addr.s6_addr16[1] = 0; 392 if (m->m_pkthdr.rcvif) { 393 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) 394 udp_in6.sin6_scope_id = m->m_pkthdr.rcvif->if_index; 395 else 396 udp_in6.sin6_scope_id = 0; 397 } else 398 udp_in6.sin6_scope_id = 0; 399 if (in6p->in6p_flags & IN6P_CONTROLOPTS) 400 ip6_savecontrol(in6p, &opts, ip6, m); 401 402 m_adj(m, off + sizeof(struct udphdr)); 403 if (sbappendaddr(&in6p->in6p_socket->so_rcv, 404 (struct sockaddr *)&udp_in6, 405 m, opts) == 0) { 406 udp6stat.udp6s_fullsock++; 407 goto bad; 408 } 409 sorwakeup(in6p->in6p_socket); 410 return IPPROTO_DONE; 411 bad: 412 if (m) 413 m_freem(m); 414 if (opts) 415 m_freem(opts); 416 return IPPROTO_DONE; 417 } 418 419 /* 420 * Notify a udp user of an asynchronous error; 421 * just wake up so tat he can collect error status. 422 */ 423 static void 424 udp6_notify(in6p, errno) 425 register struct in6pcb *in6p; 426 int errno; 427 { 428 in6p->in6p_socket->so_error = errno; 429 sorwakeup(in6p->in6p_socket); 430 sowwakeup(in6p->in6p_socket); 431 } 432 433 void 434 udp6_ctlinput(cmd, sa, ip6, m, off) 435 int cmd; 436 struct sockaddr *sa; 437 register struct ip6_hdr *ip6; 438 struct mbuf *m; 439 int off; 440 { 441 register struct udphdr *uhp; 442 struct udphdr uh; 443 444 #if 0 445 if (cmd == PRC_IFNEWADDR) 446 in6_mrejoin(&udb6); 447 else 448 #endif 449 if (!PRC_IS_REDIRECT(cmd) && 450 ((unsigned)cmd >= PRC_NCMDS || inet6ctlerrmap[cmd] == 0)) 451 return; 452 if (ip6) { 453 /* 454 * XXX: We assume that when IPV6 is non NULL, 455 * M and OFF are valid. 456 */ 457 if (m->m_len < off + sizeof(uh)) { 458 /* 459 * this should be rare case, 460 * so we compromise on this copy... 461 */ 462 m_copydata(m, off, sizeof(uh), (caddr_t)&uh); 463 uhp = &uh; 464 } else 465 uhp = (struct udphdr *)(mtod(m, caddr_t) + off); 466 (void) in6_pcbnotify(&udb6, sa, uhp->uh_dport, &ip6->ip6_src, 467 uhp->uh_sport, cmd, udp6_notify); 468 } else { 469 (void) in6_pcbnotify(&udb6, sa, 0, &zeroin6_addr, 0, cmd, 470 udp6_notify); 471 } 472 } 473 474 int 475 udp6_output(in6p, m, addr6, control) 476 register struct in6pcb *in6p; 477 register struct mbuf *m; 478 struct mbuf *addr6, *control; 479 { 480 register int ulen = m->m_pkthdr.len; 481 int plen = sizeof(struct udphdr) + ulen; 482 struct ip6_hdr *ip6; 483 struct udphdr *udp6; 484 struct in6_addr laddr6; 485 int s = 0, error = 0; 486 struct ip6_pktopts opt, *stickyopt = in6p->in6p_outputopts; 487 int priv = 0; 488 struct proc *p = curproc; /* XXX */ 489 490 if (p && !suser(p->p_ucred, &p->p_acflag)) 491 priv = 1; 492 if (control) { 493 if ((error = ip6_setpktoptions(control, &opt, priv)) != 0) 494 goto release; 495 in6p->in6p_outputopts = &opt; 496 } 497 498 if (addr6) { 499 laddr6 = in6p->in6p_laddr; 500 if (!IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 501 error = EISCONN; 502 goto release; 503 } 504 /* 505 * Must block input while temporarily connected. 506 */ 507 s = splnet(); 508 error = in6_pcbconnect(in6p, addr6); 509 if (error) { 510 splx(s); 511 goto release; 512 } 513 } else { 514 if (IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 515 error = ENOTCONN; 516 goto release; 517 } 518 } 519 /* 520 * Calculate data length and get a mbuf 521 * for UDP and IP6 headers. 522 */ 523 M_PREPEND(m, sizeof(struct ip6_hdr) + sizeof(struct udphdr), M_DONTWAIT); 524 if (m == 0) { 525 error = ENOBUFS; 526 goto release; 527 } 528 529 /* 530 * Stuff checksum and output datagram. 531 */ 532 ip6 = mtod(m, struct ip6_hdr *); 533 ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK; 534 ip6->ip6_vfc = IPV6_VERSION; 535 #if 0 /* ip6_plen will be filled in ip6_output. */ 536 ip6->ip6_plen = htons((u_short)plen); 537 #endif 538 ip6->ip6_nxt = IPPROTO_UDP; 539 ip6->ip6_hlim = in6p->in6p_ip6.ip6_hlim; /* XXX */ 540 ip6->ip6_src = in6p->in6p_laddr; 541 ip6->ip6_dst = in6p->in6p_faddr; 542 543 udp6 = (struct udphdr *)(ip6 + 1); 544 udp6->uh_sport = in6p->in6p_lport; 545 udp6->uh_dport = in6p->in6p_fport; 546 udp6->uh_ulen = htons((u_short)plen); 547 udp6->uh_sum = 0; 548 549 if ((udp6->uh_sum = in6_cksum(m, IPPROTO_UDP, 550 sizeof(struct ip6_hdr), plen)) == 0) { 551 udp6->uh_sum = 0xffff; 552 } 553 554 udp6stat.udp6s_opackets++; 555 556 #ifdef IPSEC 557 m->m_pkthdr.rcvif = (struct ifnet *)in6p->in6p_socket; 558 #endif /*IPSEC*/ 559 error = ip6_output(m, in6p->in6p_outputopts, &in6p->in6p_route, 560 0, in6p->in6p_moptions); 561 562 if (addr6) { 563 in6_pcbdisconnect(in6p); 564 in6p->in6p_laddr = laddr6; 565 splx(s); 566 } 567 goto releaseopt; 568 569 release: 570 m_freem(m); 571 572 releaseopt: 573 if (control) { 574 in6p->in6p_outputopts = stickyopt; 575 m_freem(control); 576 } 577 return(error); 578 } 579 580 extern int udp6_sendspace; 581 extern int udp6_recvspace; 582 583 int 584 udp6_usrreq(so, req, m, addr6, control, p) 585 struct socket *so; 586 int req; 587 struct mbuf *m, *addr6, *control; 588 struct proc *p; 589 { 590 struct in6pcb *in6p = sotoin6pcb(so); 591 int error = 0; 592 int s; 593 594 /* 595 * MAPPED_ADDR implementation info: 596 * Mapped addr support for PRU_CONTROL is not necessary. 597 * Because typical user of PRU_CONTROL is such as ifconfig, 598 * and they don't associate any addr to their socket. Then 599 * socket family is only hint about the PRU_CONTROL'ed address 600 * family, especially when getting addrs from kernel. 601 * So AF_INET socket need to be used to control AF_INET addrs, 602 * and AF_INET6 socket for AF_INET6 addrs. 603 */ 604 if (req == PRU_CONTROL) 605 return(in6_control(so, (u_long)m, (caddr_t)addr6, 606 (struct ifnet *)control, p)); 607 608 if (in6p == NULL && req != PRU_ATTACH) { 609 error = EINVAL; 610 goto release; 611 } 612 613 switch (req) { 614 case PRU_ATTACH: 615 /* 616 * MAPPED_ADDR implementation spec: 617 * Always attach for IPv6, 618 * and only when necessary for IPv4. 619 */ 620 if (in6p != NULL) { 621 error = EINVAL; 622 break; 623 } 624 s = splnet(); 625 error = in6_pcballoc(so, &udb6); 626 splx(s); 627 if (error) 628 break; 629 error = soreserve(so, udp6_sendspace, udp6_recvspace); 630 if (error) 631 break; 632 in6p = sotoin6pcb(so); 633 in6p->in6p_ip6.ip6_hlim = ip6_defhlim; 634 in6p->in6p_cksum = -1; /* just to be sure */ 635 #ifdef IPSEC 636 error = ipsec_init_policy(&in6p->in6p_sp); 637 #endif /*IPSEC*/ 638 break; 639 640 case PRU_DETACH: 641 udp6_detach(in6p); 642 break; 643 644 case PRU_BIND: 645 s = splnet(); 646 error = in6_pcbbind(in6p, addr6); 647 splx(s); 648 break; 649 650 case PRU_LISTEN: 651 error = EOPNOTSUPP; 652 break; 653 654 case PRU_CONNECT: 655 if (!IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 656 error = EISCONN; 657 break; 658 } 659 s = splnet(); 660 error = in6_pcbconnect(in6p, addr6); 661 if (ip6_auto_flowlabel) { 662 in6p->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK; 663 in6p->in6p_flowinfo |= 664 (htonl(ip6_flow_seq++) & IPV6_FLOWLABEL_MASK); 665 } 666 splx(s); 667 if (error == 0) 668 soisconnected(so); 669 break; 670 671 case PRU_CONNECT2: 672 error = EOPNOTSUPP; 673 break; 674 675 case PRU_ACCEPT: 676 error = EOPNOTSUPP; 677 break; 678 679 case PRU_DISCONNECT: 680 if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) { 681 error = ENOTCONN; 682 break; 683 } 684 s = splnet(); 685 in6_pcbdisconnect(in6p); 686 bzero((caddr_t)&in6p->in6p_laddr, sizeof(in6p->in6p_laddr)); 687 splx(s); 688 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 689 break; 690 691 case PRU_SHUTDOWN: 692 socantsendmore(so); 693 break; 694 695 case PRU_SEND: 696 return(udp6_output(in6p, m, addr6, control)); 697 698 case PRU_ABORT: 699 soisdisconnected(so); 700 udp6_detach(in6p); 701 break; 702 703 case PRU_SOCKADDR: 704 in6_setsockaddr(in6p, addr6); 705 break; 706 707 case PRU_PEERADDR: 708 in6_setpeeraddr(in6p, addr6); 709 break; 710 711 case PRU_SENSE: 712 /* 713 * stat: don't bother with a blocksize 714 */ 715 return(0); 716 717 case PRU_SENDOOB: 718 case PRU_FASTTIMO: 719 case PRU_SLOWTIMO: 720 case PRU_PROTORCV: 721 case PRU_PROTOSEND: 722 error = EOPNOTSUPP; 723 break; 724 725 case PRU_RCVD: 726 case PRU_RCVOOB: 727 return(EOPNOTSUPP); /* do not free mbuf's */ 728 729 default: 730 panic("udp6_usrreq"); 731 } 732 733 release: 734 if (control) { 735 printf("udp control data unexpectedly retained\n"); 736 m_freem(control); 737 } 738 if (m) 739 m_freem(m); 740 return(error); 741 } 742 743 static void 744 udp6_detach(in6p) 745 struct in6pcb *in6p; 746 { 747 int s = splnet(); 748 749 if (in6p == udp6_last_in6pcb) 750 udp6_last_in6pcb = &udb6; 751 in6_pcbdetach(in6p); 752 splx(s); 753 } 754 755 #ifdef __bsdi__ 756 int *udp6_sysvars[] = UDP6CTL_VARS; 757 758 int 759 udp6_sysctl(name, namelen, oldp, oldlenp, newp, newlen) 760 int *name; 761 u_int namelen; 762 void *oldp; 763 size_t *oldlenp; 764 void *newp; 765 size_t newlen; 766 { 767 if (name[0] >= UDP6CTL_MAXID) 768 return (EOPNOTSUPP); 769 switch (name[0]) { 770 case UDP6CTL_STATS: 771 return sysctl_rdtrunc(oldp, oldlenp, newp, &udp6stat, 772 sizeof(udp6stat)); 773 774 default: 775 return (sysctl_int_arr(udp6_sysvars, name, namelen, 776 oldp, oldlenp, newp, newlen)); 777 } 778 } 779 #endif /*__bsdi__*/ 780 781 #ifdef __NetBSD__ 782 #include <vm/vm.h> 783 #include <sys/sysctl.h> 784 785 int 786 udp6_sysctl(name, namelen, oldp, oldlenp, newp, newlen) 787 int *name; 788 u_int namelen; 789 void *oldp; 790 size_t *oldlenp; 791 void *newp; 792 size_t newlen; 793 { 794 /* All sysctl names at this level are terminal. */ 795 if (namelen != 1) 796 return ENOTDIR; 797 798 switch (name[0]) { 799 800 case UDP6CTL_SENDMAX: 801 return sysctl_int(oldp, oldlenp, newp, newlen, 802 &udp6_sendspace); 803 case UDP6CTL_RECVSPACE: 804 return sysctl_int(oldp, oldlenp, newp, newlen, 805 &udp6_recvspace); 806 default: 807 return ENOPROTOOPT; 808 } 809 /* NOTREACHED */ 810 } 811 #endif 812
Indexes created Tue Sep 23 14:10:03 GMT 2025