udp6_usrreq.c revision 1.6
1 /* $NetBSD: udp6_usrreq.c,v 1.6 1999/07/30 10:35:38 itojun 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, 1989, 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 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93 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/protosw.h> 73 #include <sys/socket.h> 74 #include <sys/socketvar.h> 75 #include <sys/errno.h> 76 #include <sys/stat.h> 77 #include <sys/systm.h> 78 #ifdef __NetBSD__ 79 #include <sys/proc.h> 80 #endif 81 82 #include <net/if.h> 83 #include <net/route.h> 84 #include <net/if_types.h> 85 86 #include <netinet/in.h> 87 #include <netinet/in_var.h> 88 #include <netinet6/ip6.h> 89 #include <netinet6/in6_pcb.h> 90 #include <netinet6/ip6_var.h> 91 #include <netinet6/icmp6.h> 92 #include <netinet6/udp6.h> 93 #include <netinet6/udp6_var.h> 94 95 #ifdef IPSEC 96 #include <netinet6/ipsec.h> 97 #endif /*IPSEC*/ 98 99 #include "faith.h" 100 101 /* 102 * UDP protocol inplementation. 103 * Per RFC 768, August, 1980. 104 */ 105 106 struct in6pcb *udp6_last_in6pcb = &udb6; 107 108 static int in6_mcmatch __P((struct in6pcb *, struct in6_addr *, struct ifnet *)); 109 static void udp6_detach __P((struct in6pcb *)); 110 static void udp6_notify __P((struct in6pcb *, int)); 111 112 void 113 udp6_init() 114 { 115 udb6.in6p_next = udb6.in6p_prev = &udb6; 116 } 117 118 static int 119 in6_mcmatch(in6p, ia6, ifp) 120 struct in6pcb *in6p; 121 register struct in6_addr *ia6; 122 struct ifnet *ifp; 123 { 124 struct ip6_moptions *im6o = in6p->in6p_moptions; 125 struct in6_multi_mship *imm; 126 127 if (im6o == NULL) 128 return 0; 129 130 for (imm = im6o->im6o_memberships.lh_first; imm != NULL; 131 imm = imm->i6mm_chain.le_next) { 132 if ((ifp == NULL || 133 imm->i6mm_maddr->in6m_ifp == ifp) && 134 IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr, 135 ia6)) 136 return 1; 137 } 138 return 0; 139 } 140 141 int 142 udp6_input(mp, offp, proto) 143 struct mbuf **mp; 144 int *offp, proto; 145 { 146 struct mbuf *m = *mp; 147 register struct ip6_hdr *ip6; 148 register struct udphdr *uh; 149 register struct in6pcb *in6p; 150 struct mbuf *opts = 0; 151 int off = *offp; 152 int plen, ulen; 153 struct sockaddr_in6 udp_in6; 154 155 #if defined(NFAITH) && 0 < NFAITH 156 if (m->m_pkthdr.rcvif) { 157 if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) { 158 /* send icmp6 host unreach? */ 159 m_freem(m); 160 return IPPROTO_DONE; 161 } 162 } 163 #endif 164 udp6stat.udp6s_ipackets++; 165 166 IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE); 167 168 ip6 = mtod(m, struct ip6_hdr *); 169 plen = ntohs(ip6->ip6_plen) - off + sizeof(*ip6); 170 uh = (struct udphdr *)((caddr_t)ip6 + off); 171 ulen = ntohs((u_short)uh->uh_ulen); 172 173 if (plen != ulen) { 174 udp6stat.udp6s_badlen++; 175 goto bad; 176 } 177 178 /* 179 * Checksum extended UDP header and data. 180 */ 181 if (uh->uh_sum == 0) 182 udp6stat.udp6s_nosum++; 183 else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) { 184 udp6stat.udp6s_badsum++; 185 goto bad; 186 } 187 188 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 189 struct in6pcb *last; 190 191 /* 192 * Deliver a multicast datagram to all sockets 193 * for which the local and remote addresses and ports match 194 * those of the incoming datagram. This allows more than 195 * one process to receive multicasts on the same port. 196 * (This really ought to be done for unicast datagrams as 197 * well, but that would cause problems with existing 198 * applications that open both address-specific sockets and 199 * a wildcard socket listening to the same port -- they would 200 * end up receiving duplicates of every unicast datagram. 201 * Those applications open the multiple sockets to overcome an 202 * inadequacy of the UDP socket interface, but for backwards 203 * compatibility we avoid the problem here rather than 204 * fixing the interface. Maybe 4.5BSD will remedy this?) 205 */ 206 207 /* 208 * In a case that laddr should be set to the link-local 209 * address (this happens in RIPng), the multicast address 210 * specified in the received packet does not match with 211 * laddr. To cure this situation, the matching is relaxed 212 * if the receiving interface is the same as one specified 213 * in the socket and if the destination multicast address 214 * matches one of the multicast groups specified in the socket. 215 */ 216 217 /* 218 * Construct sockaddr format source address. 219 */ 220 bzero(&udp_in6, sizeof(udp_in6)); 221 udp_in6.sin6_len = sizeof(struct sockaddr_in6); 222 udp_in6.sin6_family = AF_INET6; 223 udp_in6.sin6_port = uh->uh_sport; 224 udp_in6.sin6_addr = ip6->ip6_src; 225 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) 226 udp_in6.sin6_addr.s6_addr16[1] = 0; 227 if (m->m_pkthdr.rcvif) { 228 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) { 229 udp_in6.sin6_scope_id = 230 m->m_pkthdr.rcvif->if_index; 231 } else 232 udp_in6.sin6_scope_id = 0; 233 } else 234 udp_in6.sin6_scope_id = 0; 235 /* 236 * KAME note: usually we drop udphdr from mbuf here. 237 * We need udphdr for IPsec processing so we do that later. 238 */ 239 240 /* 241 * Locate pcb(s) for datagram. 242 * (Algorithm copied from raw_intr().) 243 */ 244 last = NULL; 245 for (in6p = udb6.in6p_next; 246 in6p != &udb6; 247 in6p = in6p->in6p_next) { 248 if (in6p->in6p_lport != uh->uh_dport) 249 continue; 250 if (!IN6_IS_ADDR_ANY(&in6p->in6p_laddr)) { 251 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, 252 &ip6->ip6_dst) && 253 !in6_mcmatch(in6p, &ip6->ip6_dst, 254 m->m_pkthdr.rcvif)) 255 continue; 256 } 257 if (!IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 258 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, 259 &ip6->ip6_src) || 260 in6p->in6p_fport != uh->uh_sport) 261 continue; 262 } 263 264 if (last != NULL) { 265 struct mbuf *n; 266 267 #ifdef IPSEC 268 /* 269 * Check AH/ESP integrity. 270 */ 271 if (last != NULL && ipsec6_in_reject(m, last)) { 272 ipsec6stat.in_polvio++; 273 /* do not inject data into pcb */ 274 } else 275 #endif /*IPSEC*/ 276 if ((n = m_copy(m, 0, M_COPYALL)) != NULL) { 277 /* 278 * KAME NOTE: do not 279 * m_copy(m, offset, ...) above. 280 * sbappendaddr() expects M_PKTHDR, 281 * and m_copy() will copy M_PKTHDR 282 * only if offset is 0. 283 */ 284 if (last->in6p_flags & IN6P_CONTROLOPTS) { 285 ip6_savecontrol(last, &opts, 286 ip6, n); 287 } 288 289 m_adj(m, off + sizeof(struct udphdr)); 290 if (sbappendaddr(&last->in6p_socket->so_rcv, 291 (struct sockaddr *)&udp_in6, 292 n, opts) == 0) { 293 m_freem(n); 294 if (opts) 295 m_freem(opts); 296 udp6stat.udp6s_fullsock++; 297 } else 298 sorwakeup(last->in6p_socket); 299 opts = 0; 300 } 301 } 302 last = in6p; 303 /* 304 * Don't look for additional matches if this one does 305 * not have either the SO_REUSEPORT or SO_REUSEADDR 306 * socket options set. This heuristic avoids searching 307 * through all pcbs in the common case of a non-shared 308 * port. It assumes that an application will never 309 * clear these options after setting them. 310 */ 311 if ((last->in6p_socket->so_options & 312 (SO_REUSEPORT|SO_REUSEADDR)) == 0) 313 break; 314 } 315 316 if (last == NULL) { 317 /* 318 * No matching pcb found; discard datagram. 319 * (No need to send an ICMP Port Unreachable 320 * for a broadcast or multicast datgram.) 321 */ 322 udp6stat.udp6s_noport++; 323 udp6stat.udp6s_noportmcast++; 324 goto bad; 325 } 326 #ifdef IPSEC 327 /* 328 * Check AH/ESP integrity. 329 */ 330 if (last != NULL && ipsec6_in_reject(m, last)) { 331 ipsec6stat.in_polvio++; 332 goto bad; 333 } 334 #endif /*IPSEC*/ 335 if (last->in6p_flags & IN6P_CONTROLOPTS) 336 ip6_savecontrol(last, &opts, ip6, m); 337 338 m_adj(m, off + sizeof(struct udphdr)); 339 if (sbappendaddr(&last->in6p_socket->so_rcv, 340 (struct sockaddr *)&udp_in6, 341 m, opts) == 0) { 342 udp6stat.udp6s_fullsock++; 343 goto bad; 344 } 345 sorwakeup(last->in6p_socket); 346 return IPPROTO_DONE; 347 } 348 /* 349 * Locate pcb for datagram. 350 */ 351 in6p = udp6_last_in6pcb; 352 if (in6p->in6p_lport != uh->uh_dport || 353 in6p->in6p_fport != uh->uh_sport || 354 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src) || 355 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) { 356 in6p = in6_pcblookup(&udb6, 357 &ip6->ip6_src, uh->uh_sport, 358 &ip6->ip6_dst, uh->uh_dport, 359 IN6PLOOKUP_WILDCARD); 360 if (in6p) 361 udp6_last_in6pcb = in6p; 362 udp6stat.udp6ps_pcbcachemiss++; 363 } 364 if (in6p == 0) { 365 udp6stat.udp6s_noport++; 366 if (m->m_flags & M_MCAST) { 367 printf("UDP6: M_MCAST is set in a unicast packet.\n"); 368 udp6stat.udp6s_noportmcast++; 369 goto bad; 370 } 371 icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0); 372 return IPPROTO_DONE; 373 } 374 #ifdef IPSEC 375 /* 376 * Check AH/ESP integrity. 377 */ 378 if (in6p != NULL && ipsec6_in_reject(m, in6p)) { 379 ipsec6stat.in_polvio++; 380 goto bad; 381 } 382 #endif /*IPSEC*/ 383 384 /* 385 * Construct sockaddr format source address. 386 * Stuff source address and datagram in user buffer. 387 */ 388 bzero(&udp_in6, sizeof(udp_in6)); 389 udp_in6.sin6_len = sizeof(struct sockaddr_in6); 390 udp_in6.sin6_family = AF_INET6; 391 udp_in6.sin6_port = uh->uh_sport; 392 udp_in6.sin6_addr = ip6->ip6_src; 393 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) 394 udp_in6.sin6_addr.s6_addr16[1] = 0; 395 if (m->m_pkthdr.rcvif) { 396 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) 397 udp_in6.sin6_scope_id = m->m_pkthdr.rcvif->if_index; 398 else 399 udp_in6.sin6_scope_id = 0; 400 } else 401 udp_in6.sin6_scope_id = 0; 402 if (in6p->in6p_flags & IN6P_CONTROLOPTS) 403 ip6_savecontrol(in6p, &opts, ip6, m); 404 405 m_adj(m, off + sizeof(struct udphdr)); 406 if (sbappendaddr(&in6p->in6p_socket->so_rcv, 407 (struct sockaddr *)&udp_in6, 408 m, opts) == 0) { 409 udp6stat.udp6s_fullsock++; 410 goto bad; 411 } 412 sorwakeup(in6p->in6p_socket); 413 return IPPROTO_DONE; 414 bad: 415 if (m) 416 m_freem(m); 417 if (opts) 418 m_freem(opts); 419 return IPPROTO_DONE; 420 } 421 422 /* 423 * Notify a udp user of an asynchronous error; 424 * just wake up so tat he can collect error status. 425 */ 426 static void 427 udp6_notify(in6p, errno) 428 register struct in6pcb *in6p; 429 int errno; 430 { 431 in6p->in6p_socket->so_error = errno; 432 sorwakeup(in6p->in6p_socket); 433 sowwakeup(in6p->in6p_socket); 434 } 435 436 void 437 udp6_ctlinput(cmd, sa, ip6, m, off) 438 int cmd; 439 struct sockaddr *sa; 440 register struct ip6_hdr *ip6; 441 struct mbuf *m; 442 int off; 443 { 444 register struct udphdr *uhp; 445 struct udphdr uh; 446 447 #if 0 448 if (cmd == PRC_IFNEWADDR) 449 in6_mrejoin(&udb6); 450 else 451 #endif 452 if (!PRC_IS_REDIRECT(cmd) && 453 ((unsigned)cmd >= PRC_NCMDS || inet6ctlerrmap[cmd] == 0)) 454 return; 455 if (ip6) { 456 /* 457 * XXX: We assume that when IPV6 is non NULL, 458 * M and OFF are valid. 459 */ 460 if (m->m_len < off + sizeof(uh)) { 461 /* 462 * this should be rare case, 463 * so we compromise on this copy... 464 */ 465 m_copydata(m, off, sizeof(uh), (caddr_t)&uh); 466 uhp = &uh; 467 } else 468 uhp = (struct udphdr *)(mtod(m, caddr_t) + off); 469 (void) in6_pcbnotify(&udb6, sa, uhp->uh_dport, &ip6->ip6_src, 470 uhp->uh_sport, cmd, udp6_notify); 471 } else { 472 (void) in6_pcbnotify(&udb6, sa, 0, &zeroin6_addr, 0, cmd, 473 udp6_notify); 474 } 475 } 476 477 int 478 udp6_output(in6p, m, addr6, control) 479 register struct in6pcb *in6p; 480 register struct mbuf *m; 481 struct mbuf *addr6, *control; 482 { 483 register int ulen = m->m_pkthdr.len; 484 int plen = sizeof(struct udphdr) + ulen; 485 struct ip6_hdr *ip6; 486 struct udphdr *udp6; 487 struct in6_addr laddr6; 488 int s = 0, error = 0; 489 struct ip6_pktopts opt, *stickyopt = in6p->in6p_outputopts; 490 int priv = 0; 491 struct proc *p = curproc; /* XXX */ 492 493 if (p && !suser(p->p_ucred, &p->p_acflag)) 494 priv = 1; 495 if (control) { 496 if ((error = ip6_setpktoptions(control, &opt, priv)) != 0) 497 goto release; 498 in6p->in6p_outputopts = &opt; 499 } 500 501 if (addr6) { 502 laddr6 = in6p->in6p_laddr; 503 if (!IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 504 error = EISCONN; 505 goto release; 506 } 507 /* 508 * Must block input while temporarily connected. 509 */ 510 s = splsoftnet(); 511 error = in6_pcbconnect(in6p, addr6); 512 if (error) { 513 splx(s); 514 goto release; 515 } 516 } else { 517 if (IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 518 error = ENOTCONN; 519 goto release; 520 } 521 } 522 /* 523 * Calculate data length and get a mbuf 524 * for UDP and IP6 headers. 525 */ 526 M_PREPEND(m, sizeof(struct ip6_hdr) + sizeof(struct udphdr), M_DONTWAIT); 527 if (m == 0) { 528 error = ENOBUFS; 529 goto release; 530 } 531 532 /* 533 * Stuff checksum and output datagram. 534 */ 535 ip6 = mtod(m, struct ip6_hdr *); 536 ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK; 537 ip6->ip6_vfc = IPV6_VERSION; 538 #if 0 /* ip6_plen will be filled in ip6_output. */ 539 ip6->ip6_plen = htons((u_short)plen); 540 #endif 541 ip6->ip6_nxt = IPPROTO_UDP; 542 ip6->ip6_hlim = in6p->in6p_ip6.ip6_hlim; /* XXX */ 543 ip6->ip6_src = in6p->in6p_laddr; 544 ip6->ip6_dst = in6p->in6p_faddr; 545 546 udp6 = (struct udphdr *)(ip6 + 1); 547 udp6->uh_sport = in6p->in6p_lport; 548 udp6->uh_dport = in6p->in6p_fport; 549 udp6->uh_ulen = htons((u_short)plen); 550 udp6->uh_sum = 0; 551 552 if ((udp6->uh_sum = in6_cksum(m, IPPROTO_UDP, 553 sizeof(struct ip6_hdr), plen)) == 0) { 554 udp6->uh_sum = 0xffff; 555 } 556 557 udp6stat.udp6s_opackets++; 558 559 #ifdef IPSEC 560 m->m_pkthdr.rcvif = (struct ifnet *)in6p->in6p_socket; 561 #endif /*IPSEC*/ 562 error = ip6_output(m, in6p->in6p_outputopts, &in6p->in6p_route, 563 0, in6p->in6p_moptions); 564 565 if (addr6) { 566 in6_pcbdisconnect(in6p); 567 in6p->in6p_laddr = laddr6; 568 splx(s); 569 } 570 goto releaseopt; 571 572 release: 573 m_freem(m); 574 575 releaseopt: 576 if (control) { 577 in6p->in6p_outputopts = stickyopt; 578 m_freem(control); 579 } 580 return(error); 581 } 582 583 extern int udp6_sendspace; 584 extern int udp6_recvspace; 585 586 int 587 udp6_usrreq(so, req, m, addr6, control, p) 588 struct socket *so; 589 int req; 590 struct mbuf *m, *addr6, *control; 591 struct proc *p; 592 { 593 struct in6pcb *in6p = sotoin6pcb(so); 594 int error = 0; 595 int s; 596 597 /* 598 * MAPPED_ADDR implementation info: 599 * Mapped addr support for PRU_CONTROL is not necessary. 600 * Because typical user of PRU_CONTROL is such as ifconfig, 601 * and they don't associate any addr to their socket. Then 602 * socket family is only hint about the PRU_CONTROL'ed address 603 * family, especially when getting addrs from kernel. 604 * So AF_INET socket need to be used to control AF_INET addrs, 605 * and AF_INET6 socket for AF_INET6 addrs. 606 */ 607 if (req == PRU_CONTROL) 608 return(in6_control(so, (u_long)m, (caddr_t)addr6, 609 (struct ifnet *)control, p)); 610 611 if (in6p == NULL && req != PRU_ATTACH) { 612 error = EINVAL; 613 goto release; 614 } 615 616 switch (req) { 617 case PRU_ATTACH: 618 /* 619 * MAPPED_ADDR implementation spec: 620 * Always attach for IPv6, 621 * and only when necessary for IPv4. 622 */ 623 if (in6p != NULL) { 624 error = EINVAL; 625 break; 626 } 627 s = splsoftnet(); 628 error = in6_pcballoc(so, &udb6); 629 splx(s); 630 if (error) 631 break; 632 error = soreserve(so, udp6_sendspace, udp6_recvspace); 633 if (error) 634 break; 635 in6p = sotoin6pcb(so); 636 in6p->in6p_ip6.ip6_hlim = ip6_defhlim; 637 in6p->in6p_cksum = -1; /* just to be sure */ 638 #ifdef IPSEC 639 error = ipsec_init_policy(&in6p->in6p_sp); 640 #endif /*IPSEC*/ 641 break; 642 643 case PRU_DETACH: 644 udp6_detach(in6p); 645 break; 646 647 case PRU_BIND: 648 s = splsoftnet(); 649 error = in6_pcbbind(in6p, addr6); 650 splx(s); 651 break; 652 653 case PRU_LISTEN: 654 error = EOPNOTSUPP; 655 break; 656 657 case PRU_CONNECT: 658 if (!IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 659 error = EISCONN; 660 break; 661 } 662 s = splsoftnet(); 663 error = in6_pcbconnect(in6p, addr6); 664 if (ip6_auto_flowlabel) { 665 in6p->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK; 666 in6p->in6p_flowinfo |= 667 (htonl(ip6_flow_seq++) & IPV6_FLOWLABEL_MASK); 668 } 669 splx(s); 670 if (error == 0) 671 soisconnected(so); 672 break; 673 674 case PRU_CONNECT2: 675 error = EOPNOTSUPP; 676 break; 677 678 case PRU_ACCEPT: 679 error = EOPNOTSUPP; 680 break; 681 682 case PRU_DISCONNECT: 683 if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) { 684 error = ENOTCONN; 685 break; 686 } 687 s = splsoftnet(); 688 in6_pcbdisconnect(in6p); 689 bzero((caddr_t)&in6p->in6p_laddr, sizeof(in6p->in6p_laddr)); 690 splx(s); 691 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 692 break; 693 694 case PRU_SHUTDOWN: 695 socantsendmore(so); 696 break; 697 698 case PRU_SEND: 699 return(udp6_output(in6p, m, addr6, control)); 700 701 case PRU_ABORT: 702 soisdisconnected(so); 703 udp6_detach(in6p); 704 break; 705 706 case PRU_SOCKADDR: 707 in6_setsockaddr(in6p, addr6); 708 break; 709 710 case PRU_PEERADDR: 711 in6_setpeeraddr(in6p, addr6); 712 break; 713 714 case PRU_SENSE: 715 /* 716 * stat: don't bother with a blocksize 717 */ 718 return(0); 719 720 case PRU_SENDOOB: 721 case PRU_FASTTIMO: 722 case PRU_SLOWTIMO: 723 case PRU_PROTORCV: 724 case PRU_PROTOSEND: 725 error = EOPNOTSUPP; 726 break; 727 728 case PRU_RCVD: 729 case PRU_RCVOOB: 730 return(EOPNOTSUPP); /* do not free mbuf's */ 731 732 default: 733 panic("udp6_usrreq"); 734 } 735 736 release: 737 if (control) { 738 printf("udp control data unexpectedly retained\n"); 739 m_freem(control); 740 } 741 if (m) 742 m_freem(m); 743 return(error); 744 } 745 746 static void 747 udp6_detach(in6p) 748 struct in6pcb *in6p; 749 { 750 int s = splsoftnet(); 751 752 if (in6p == udp6_last_in6pcb) 753 udp6_last_in6pcb = &udb6; 754 in6_pcbdetach(in6p); 755 splx(s); 756 } 757 758 #ifdef __bsdi__ 759 int *udp6_sysvars[] = UDP6CTL_VARS; 760 761 int 762 udp6_sysctl(name, namelen, oldp, oldlenp, newp, newlen) 763 int *name; 764 u_int namelen; 765 void *oldp; 766 size_t *oldlenp; 767 void *newp; 768 size_t newlen; 769 { 770 if (name[0] >= UDP6CTL_MAXID) 771 return (EOPNOTSUPP); 772 switch (name[0]) { 773 case UDP6CTL_STATS: 774 return sysctl_rdtrunc(oldp, oldlenp, newp, &udp6stat, 775 sizeof(udp6stat)); 776 777 default: 778 return (sysctl_int_arr(udp6_sysvars, name, namelen, 779 oldp, oldlenp, newp, newlen)); 780 } 781 } 782 #endif /*__bsdi__*/ 783 784 #ifdef __NetBSD__ 785 #include <vm/vm.h> 786 #include <sys/sysctl.h> 787 788 int 789 udp6_sysctl(name, namelen, oldp, oldlenp, newp, newlen) 790 int *name; 791 u_int namelen; 792 void *oldp; 793 size_t *oldlenp; 794 void *newp; 795 size_t newlen; 796 { 797 /* All sysctl names at this level are terminal. */ 798 if (namelen != 1) 799 return ENOTDIR; 800 801 switch (name[0]) { 802 803 case UDP6CTL_SENDMAX: 804 return sysctl_int(oldp, oldlenp, newp, newlen, 805 &udp6_sendspace); 806 case UDP6CTL_RECVSPACE: 807 return sysctl_int(oldp, oldlenp, newp, newlen, 808 &udp6_recvspace); 809 default: 810 return ENOPROTOOPT; 811 } 812 /* NOTREACHED */ 813 } 814 #endif 815
Indexes created Mon Sep 29 21:09:56 GMT 2025